SU735422A1 - Apparatus for roughing sheet blanks of elastic material - Google Patents

Description

(54) DEVICE FOR RINGING SHEETS IN ELASTIC MATERIAL

one

The invention relates to equipment for the rubber industry, in particular to devices for roughing sheet blanks from elastic materials and can be used, for example, for roughing blanks of inflatable rubber boats.

A device for wool O5 sheet of blanks of elastic material is known, which contains a frame with a base plate and a scouring tool in the form of a drive endless abrasive belt 1.

This device roughs the workpieces only in rectangular areas and is unsuitable for roughing places of various configurations located inside the contours of the workpieces.

It is also known a device for roughing sheet blanks of elastic material, containing a table with stops. To center the blank, a support plate with slits for roughing certain surface areas inside the contour of the blank, rough grinding tools mounted above it, a pressure plate movable in a vertical plane elastic elements and the drive of the roughing tools. In this device, the grinding tools are made in the form of discs with abrasive ends 2.

However, the specified device proposes to roughen only certain areas of the surface inside the KOiiTypa workpieces, this limits its operational capabilities and reduces the processing capacity of the workpieces, since for roughing the edges of the workpieces, mix up other 10 devices for roughing.

The purpose of the invention is to expand the operational capabilities of the device and increase the productivity of the roughing of the workpieces by simultaneously processing them around the perimeter and in separate sections.

15 surface inside the contour.

To achieve this goal, in a known device for roughing sheet blanks of elastic material, containing a table with stops for centering the workpiece, a base plate with slots for roughing individual areas of the surface inside the contour of the workpiece, roughing tools JJ-.F. .i--;

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Claims (2)

3 copes, mounted in a vertical plane, a pressure plate with elastic elements and a drive of scouring tools, a support plate made with a contour corresponding to the border boundary of the rough edges of the workpiece, and the pressure plate is made as a set of sections with individual drives for their vertical movement. The roughing tools are made in the form of drive lines opposite to the center of the device, the directions of the closed abrasive belts. FIG. 1 shows the described device; in fig. 2 - the same, side view; in fig. 3 is a view A of FIG. one; in fig. 4 shows a section BB in FIG. 3; in fig. 5 and 6 are the positions of the sheet blank on the base plate during the shearing process. The device for shearing the sheets of blanks from elastic material contains frame 1 with table 2, having stops 3, 4 and 5 for centering the workpiece and openings 6; base plate 7, shepherding tools 8 and 9 installed under it and their drive 10. Roughing tools 8 and 9 are made in the form of drive directions in the direction of the device of closed abrasive belts. The support plate 7 is made with a contour corresponding to the contour of the boundaries of the rough edges of the workpiece, and has slots 11-14 for the chewing of certain sections within the contour of the workpiece. . A pressure plate is mounted above the base plate, which is made as a set of sections 15-18 with individual drives for their vertical movement, for example, as power cylinders 19-22. On the working surface of the sections there are elastic elements 23 made of foam rubber or sponge rubber and located on the contour of the support plate and the place of the cut. The cylinders 19-22 are fixed to the frame 1. The drive 10 of the shearing tools is filled in the form of an electric motor 24 with a pneumatic friction 25 and one and a temporary timing 26. For controlling the power cylinders 19-22 and pneumatic friction 25 to turn on, spring-loaded pedals 27 and 28 and dual switches 29, connected to the solenoid valves for switching the spool of the air distributor 30, through which the compressed air from the network enters the cavities of the power cylinders. The device works as follows. Sheet billet 31 is laid on table 2 and centered on stops 3 and 4 (Fig. 5), motor 24 is turned on and pedal 27 is briefly pressed. Compressed air flows into pneumatic pneumatic 735425 25 through the air distributor 30, cylinders 20 and 21, which lower sections 16 and 17 to the base plate 7. Section 17 presses the workpiece 31 to the base plate, fixing it from mixing: in the grinding process, and the elastic elements 23 of the section 16, impact the workpiece, lower its edges to moving abrasive tape shcheroh oval tool 8. At this point, the sections of the surface of the workpiece 31 are peeled. Then the force from the pedal 27 is removed and the friction clutch 25 is turned off, and the power cylinders 20 and 21 and sections 16 and 17 are raised. The workpiece 31 moves on the support plate 7 to the right until stop 5 (Fig. 5). The pedal 28 is pressed and the compressed air from the network through the air distributor enters the upper cavities of the power cylinders 19-22 and switches on the pneumatic-friction gear 25. With the power cylinders all sections 15-18 descend to the base plate. With this, section 17, the workpiece is fixed against movement, and the elastic elements 23 of the section are lowered to its shelling tools by its edges and portions located in the place of the cut-outs of the base plate. Scraping of the sections in the workpiece — edges and predetermined areas of its surface within its contour — is made. The force is removed from the pedal 28, the pneumatic friction unit 25 is turned off, sections 15-18 are lifted to their original position, the workpiece 31 is removed from the edges and areas inside its contour that have been leaked around the perimeter from the base plate 7. Then the process is repeated. The described device provides high-quality and productive cutting of blanks at the same time along their perimeter and sections of different configurations inside their contours. Labor productivity during the roughing of blanks. Grows by 3-4 times, depending on the size of the blanks, the size and number of flaking areas within their contours. Comparative tests of seams glued from otsherakhovirovannyh blanks on the proposed device showed that the shear strength of shears under shear under normal conditions is 30% higher and that of shear strength. delamination is higher by 250-300% than that of samples otsherokhovanyh on known devices with a needle shecherchevovalnom tape, which allows to significantly improve the quality of products collected from sheet blanks. Claims 1. A device for shearing the sheet blanks of elastic material, comprising a table with stops for centering the workpiece, a support plate with slots for smoothing individual areas of the surface inside the contour of the workpiece, mounted beneath it is curved. tools mounted above the base plate of a vertical moving movable pressure plate with elastic elements and a drive of the scouring tools, characterized in that in order to expand the operational capabilities of the device and increase the productivity of the roughing of the workpieces by simultaneously processing them around the perimeter and along individual parts of the surface inside the contour , the support plate is made with a contour corresponding to the contour of the edges of the rough edges of the workpiece, and the pressure plate is made as a set of seconds with individual drives for their vertical movement. (S 15 20 16 2.1 i 22 -LU tL LJ TT - - iT riw t u. 7 U1 Tl / I / I I / I I / I 2. A device according to claim 1, characterized in that the scouring tools are made as drive directions of closed abrasive belts opposite to the center of the device. Sources of information taken into account in the examination 1. US patent number 3922820, CL. 51-142, publ. 1975. 2. The machine for roughing the blanks of the boat LGN2-U under the washer and oarlocks. Technical description and operating instructions, A-1472, Ufa plant RTI them. Frunze, 1976 (prototype). / D -23 2c