NAVY MIL-D-2477 C-1968 DOUGH MOLDING MACHINES LOAF《捏塑造型机器》.pdf

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1、MIL-D-2477C 73 7777706 02387LL W MIL-D-2477C 29 Februarv i968 SUPERSEDING MIL-D-2477B 12 March 1963 MILITARY SPECIFICATION DOUGH MOLDING MACHINES, LOAF This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.- This specification covers

2、 two types of electrically operated dough molding machines for molding dough into predetermined uniform size loaves. 1.2 Classification.- types as specified (see 6.2). Dough molding machine, loaf shall be of the following Type I - Dough molding machine with cross-grain molding. Type II - Dough moldi

3、ng machine without cross-grain molding. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids, or request for proposal, form a part of this specification to the extent specified herein: SPECIFICATIONS FEDERAL CC-M-636 - Motor, Alternating Current,

4、(Fractional Horsepower) CC-M-641 - Motor, Alternating Current, (Integral Horsepower, 200 HP and Smaller) MILITARY MIL-B-2316 - Bakery Equipment, Including Unit Assemblies, Repair Parts and Tools, Preparation for Delivery Of FSC 7320 , - Provided by IHSNot for ResaleNo reproduction or networking perm

5、itted without license from IHS-,-,- MIL-D-2477C 73 m 7777706 0238712 T M MIL-D.2477C STANDARDS MILITARY MIL-STD-105 - Sampling Procedure and Tables for Inspection by Attributes MIL-STD-130 - Identification Marking of U.S. Military Property MIL-STD-461 - Electromagnetic Interference Characteristics R

6、equirements MIL-STD-462 - Electromagnetic Interference Characteristics, Measure- for Equipment ment of (Copies of specifications, standards and publications required by the supplier in connection with specific procurement functions should be obtained from the pro- curing activity or as directed by t

7、he contracting officer.) * 2.2 Other publication.- The following documents form a part of thio specification to the extent specified herein, on date of invitation for bids or request for proposal shall apply. Unless otherwise indicated, the issue in effect BAKING IhPUSTRY SANITATION STANDAW) (BISSC)

8、 Sanitation Standard No. 9 for Bread Molders 1967 (Copies of Baking Industry Sariitation Standards Publication may be obtained from the Baking Industry Sanitation Standards Committee, 521 Fifth Avenue, New York, N.Y. 10017.) UNDERWRITER S LABORATORIES, INC. (UL) Electrical Construction Naterials Lis

9、t (Copies may be obtained from Underwriters; Laboratories, Inc., 207 East Ohio Street, Chicago, Ill. 60611, Walt Whitman Road, Melville, L.I., N.Y. 11749, and 1655 Scott Boulevard, Santa Clara, California Technical society and technical association specifications and standards are 95050.) generally

10、available for reference from libraries. technical groups and using Federal agencies. They are also distributed among 3. REQUIREMENTS 3.1 Preproduction sample.- Unless otherwise specified (see 6.2), before pro- duction is commenced, a sample dough molding machine covered by this specification shall b

11、e submitted or made available to the contracting officer or his authorized representative for approval in accordance with 4.2. The approval of the pre- production sample authorizes the commencement of production, but does not re- lieve the supplier of responsibility or compliance with all applicable

12、 pro- visions of this specification. the same facilities to be used for the manufacture of the production items. The preproduction sample shall be manufactured in 2 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ - MIL-D-ZLI77C 73 9999906 0238933

13、 3 W e MIL-D-2477C 3.2 Standard product.- The dough molding machine delivered under this speci- fication shall be of the manufacturers commercially current standard product except for any change necessary to comply with specification requirements. * 3.3 Standards,- U1 electrical equipment shall conf

14、orm to i a listing in the “Electrical Appliance and Utilization Equipment List”, or a certified test report from a recognized in- dependent testing laboratory, acceptable to the Government indicating that the electric components conform to the applicable L Standards. 3.3.3 B1SSC.- Acceptable evidenc

15、e of meeting the applicable requirements of BISSC Standard No. 9 shall be the BISSC Seal of approval on the do.ugh molder or a certified test report from a recognized independent testing laboratory, acceptable to the medical department of the procuring service indicating that the dough molders offer

16、ed conform to the applicable requirements of BISSC Standard No. 9. 3.4 Materials.- Materials not definitely specified shall be of the quality normally used in the manufacture of items of this type. 3.4.1 Motors.- Electric motors shall conform to CC-M-636 or CC-M-641, as applicable. Motors shall be o

17、f the continous-duty, induction type, totally in- closed, without commutation devices, having not more than one starting contact. 3.5 esign,- The molding machines shall be deeigned to receive pieces of dough The type from an intermediate proofer and shape the dough into loaves ready to be placed int

18、o pans. I and type II machines shall mold 22-ounce dough pieces at a rate of 60 pieces a minute and 36-ounce dough pieces at a rate of 40 pieces a minute, molder shall be equipped with two conveyor belts perpendicular to each other, which shall permit the dough to be sheeted and then transferred to

19、the other conveyor which shall permit the dough to be curled and molded for panning. type II molder shall be capable of producing uniform dough pieces which have been sheeted and molded. The machines shall be capable of running at variable speeds. The type I The 3.6 Construction.- The machine frame

20、shall be constructed with cast iron or steel. flections and maintain the close clearances between mating parts of the rolls Shafts shall be made of steel, and shall prevent lateral and torsional de- 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I

21、 MIL-D-ZLI77C 73 W 9797906 0238914 3 W MIL-D-2477C Al1 bearings shall be of a replaceable type, and shall be protected against flour dust and sealed to prevent loss of lubricant, 4.5.1, moving parts shall have no undue vibration, bearings shall not overheat and assembly of the component parts shall

22、be complete, of proper iqterrelationship, and the starting and stopping and adjusting devices shall be positive in action and operate as intended. When tested as specified in 3.6.1 Sheeting head.- The sheeting head shall be of the integral type. The rolls and molding belt speeds shall be correlated

23、to effectively handle the pro- duction requirements specified in 3.5. 3.6.2 Number of pairs of rolls .- The machine shall be provided with three pairs of rolls or be of a type with two pairs of rolls in the head proper and a thirdrset of rolls superimposed over the head by means of an auxiliary pre-

24、 sheeting device. 3.6.3 Rolls.- The rolls shall be made of hardened and ground alloy steel, or Front rolls shall be plain, and the rear polytetrafluoroethylene or trifluorochloroethylene, and shall be mounted on shafts with provision for replacement. rolls shall have side flanges of sufficient heigh

25、t to handle the full weight range of dough pieces. pieces for molded lengths as specified in 3.6.8. adjustment for sheet thickness or two pairs may be controlled by common adjustment. Provisions shall be made to accurately indicate in thousandths of an inch the openings between the mating pairs of r

26、olls. Rolls shall be of the correct width to sheet dough Rolls shall have. independent 3.6.4 Roll scrapers.- Roll scripers shall be made of hardened and ground materials and may be coated with terrafluoroethylene or trifluorochloroethylene. They shall be mounted on adjustable supports to provide pro

27、per scraping action without heating, excessive wear, vibration, or noise. 3.6.5 Dusters.- Each machine shall be provided with two dusters, complete with adjustments for flour delivery and distribution, and with suitable dust guides or baffles to direct the flour to the head rolls and on the molding

28、belt, 3.6.6 CurlinP chain.- The curling chain shall be made of corrosion-resisting steel wire mesh designed to prevent slippage of sheeted dough piece and shall be ad justable. 3.6.7 both ends. moulding belt. Pressure plate.- The pressure plate shall be independently adjustable at The plate shall be

29、 adjustable to a minimum of 1-1/2 inches above the 3.6.8 guides. to provide a finished loaf range of 7 to 17 inches in length. Side Puides.- Guides shall be adjustable vertically to restrict pilling arid horizontally Each pressure chamber shall be equipped withtwo side 3.6.9 Conveyor.- The molding c

30、onveyor belt shall be made of solid woven cotton, 3- or 4-ply construction. imum adjustment of 1-1/2 inches between the centerline of the molding-belt rollers to allow for adjusting the belt tension. Means shall be provided for allowing a min- 4 Provided by IHSNot for ResaleNo reproduction or networ

31、king permitted without license from IHS-,-,-NIL-D-ZLl77C 73 W 7777706 0238735 5 M L-D-24 77 C 3.6.10 Take-off apron.- A take-off apron of polished corrosion-resisting steel shall be provided at the discharge end of the molding belt to receive the molded dough pieces. 3.6.11 Electrical requirements.-

32、 3.6.11.1 Electric motors,- The motors shall have ample power to operate the Motors shall be as specified in 3.4.1, as applicable. machine and components continously at maximum capacity without exceeding the allowable temperature rise. The molder shall be completely wired and equipped with a conveni

33、ently mounted push- button station and magnetic switch with thermal overload protection. station shall be located, so that it is accessible to an operator standing at the take off position. The pushbutton 3.6.11.2 Electrical rating.- Unless otherwise specified (see 6.2) , all electrical equipment sh

34、all be designed for operation on a nominal 208-volt, alternating current (AC), 60-cycle, three-phase power system. * 3.7 Radio interference suppression.- Equipment processed under this specifi- cation shall have radio interference suppression conforming to class IIB of MIL-STE-461 (see 4.5.2) . 3.8

35、Lubrication.- Bearings and all other parts requiring pressure lubrication Close oil cups shall be At time of delivery, the shall be provided with pressure - type grease fittings. provided on all fittings which require oil lubrication. unit shall be completely lubricated with the manufacturers standa

36、rd lubricant. 3.8.1 Lubrication chart.- The supplier shall affix to each machine a corrosion- resistant metal lubricating chart indicating: (a) (b) (c) 3.8.2 Finish.- Al1 exterior surfaces of the machines not coming in contact with Ai1 points of the equipment requiring lubrication. Grade and type of

37、 lubricant required. Time interval when lubrication should be accomplished, dough, except corrosion-resisting steel shall be given a white enamel finish in accordance with the manufacturers commercial practice. 3.9 Narking for identification.- The dough molding machine shall have the letters “U.S.“

38、and additional pertinent rating characteristics or information nec- essary for the safe handling operation and maintenance of the items on a corrosion resistant metal plate in accordance with XIL-STD-130. shall be visible to the eye and shall be securely affixed in a conspicuous location. The name p

39、late 3.10 EauiDment mand I- an equipment manual. specified in the contract or order (see 6.2). The supplier shall furnish with each dough molder with Planual contents and additional distribution shall be as 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I

40、HS-,-,-MIL-D-2477C 73 m 7979906 0238916 7 m MIL-b2477C 3.11 Repair and maintenance.- Provisions shall be made to allow for ready adjustment, service and replacement of components without disturbing or dissassembly of any major components. In addition there shall be fro0 acess to inspect, service, an

41、d adjust any component or equipment as provided for by this specification or as indicated by the component or equipment manufacturer, without requiring disassembly of any other component or equipment on the dough molder. 3.12 Interchangeability.- A1 parts having the same manufacturers part number sh

42、all be functionally and dimensionally interchangeable. 3.13 Workmanship.- * 3.13.1 Fabrication.- Metal used shall be free from fractures, splits, punctures, dents, deterioration and shall not be bowed, or malformed. burr, sliver or splinter. There shall be no sharp *. 3.13.2 Welding and brazing.- Al

43、l surfaces of parts to be welded or brazed shall Welding and brazing shall be accomplished in a manner which will prevent be clean. the occurrence of burn holes, cracks, fractures, undercuts, or incomplete fusion. All scale or flux deposits shall be removed from finished welds, smooth and uniform. W

44、elds shall be * 3.13.3 Solder.- All surfaces to be soldered (when applicable) shall be thoroughly * 3.13.4 Threaded fasteners.- Threaded fasteners shall not be loose or missing, Threads shall not be missing, stripped or broken. * 3.13.5 Electrical assembly.- Wiring shall (1) be properly joined, (2)

45、not be cleaned prior to soldering. Solder joints shall be smooth with no pin holes. cut or abraded, (3) not be loose at terminal end, (4) be properly inclosed in conduit when required, (5) be provided with slack, and (6) not be stripped of required insulation. 4. QUALITY ASSURANCE PROVISIONS * 4.1 R

46、esponsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspec- tion requirements as specified herein. Except as otherwise specified in the con- tract or order, the supplier may use his own or any other facil

47、ities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspec- tions to assure supplies and services conform to prescribed requirements. set forth in the specification where suc

48、h inspections are deemed necessary 4.2 Preproduction sample inspection.- When a preproductions sample is required, it shall be examined for defects listed in table I and tested as specified in 4.5.1 and 4.5.2. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro

49、m IHS-,-,-MIL-D-ZLI77C 73 M 7797706 0238937 7 M MIL-D-247 7C 4.3.1 Component and material inspection.- In accordance with 4.1 above, the supplier is responsible for insuring that components and materials used are manu- factured and inspected in accordance with the requirements of referenced sub- sidiary specifications and standards to the extent specified herein, or, if none in accordance with this specifiaction. End item inspection.- 4.3.2 A lot shall con