SU1014732A1 - Apparatus for vacuum moulding of polymeric articles - Google Patents

Abstract

1. DEVICE FOR VACUUM -. FORMING PRODUCTS FROM POLYMER MATERIALS, containing a mold, the cavity of which is communicated by channels with the vacuum system. characterized in that, in order to form a complex profile at the end of a pipe, the form is made in the form of hinged half-molds and is equipped with a spring-loaded stopper mounted on the bottom half-strm to seal the pipe end with a latch that is hinged along the bottom of the form and fitted with a stop at one end that interacts with the stopper , and at the other end - with a pivoting lever with a pusher, and a lever for fixing half-molds / interacting with the pusher of the latch and a copy plate on the upper half of the C-o6pci3HtOki for interaction with the stopper, on the side of one of the half-molds O) fixed.: Guides made in the form of a plate with radius chamfers at the end. 4; ib

Description

2. A device according to claim 2, characterized in that on the surface of the closure of the half-molds according to

perimeter made: grooves filled with heat-resistant rubber.

The invention relates to devices for the manufacture of products from polymeric material by molding the material on the inner surface of the mold, influencing the material with a pressure differential, and more specifically to forming a hollow asymmetrical socket on storage tubes for feeding the fish to fish-cutting machines. Known pipe drive for fish to the tapping machines of the company. Trfo (Norway), consisting of two parts: a bell and an ellipsoid hull, made separately and joined by pasting. During the operation of such pipes, the splitting of glued seams occurs and, consequently, their service life is not long, it does not exceed 3-4 months. addition ;, such storage tubes are complex in due to j. preparing and having manual operations Jto preparing and gluing the socket to the elliptical tube body. It is also known a device for forming variable shearing shells with a winding-containing mandrel and working wrap material 13f. This device allows you to make a pipe with an asymmetrical bell, but it will not be suitable for feeding fish, since it will have seams that will not Transport is moving around fish. The closest to the present invention is a device for vacuum forming of articles from polymeric materials, which contains a mold, the cavity of which is communicated with: channels with vacuum system 2. However, it is not possible to mold a product from a tubular billet in this form. The purpose of the invention is molding at the end of a pipe of a complex profile. This goal is achieved by the fact that, in a device containing a mold, the molding cavity of which is connected by channels with an evacuation system, the shape is made in the form of hinged half-molds and is fitted with a snap-fit on the bottom half-form under a spring-loaded stopper to seal the end of the pipe and hinged along the bottom half-form. equipped at one end with a stop interacting with the stopper and at the other end with a pivoting lever with a pusher and fixed on the upper half-form with a C-shaped lever for closing the half-forms in Interaction of a pusher latch ", and a guiding plate for cooperating with the stopper, and on the side of one of the mold halves 3 akrepleny guides formed as plates with radiused chamfers on the end. In addition, no grooves filled with heat-resistant rubber are made on the surface of the roller, nor half-molds around the perimeter. FIG. 1 shows the device in the initial position, general view; in fig. 2 shows section A-A in FIG. one; not figs. 3 shows a section BB in FIG. 2; in fig. 4 - the device at the beginning of the working position. Side view; in fig. Section B-B in FIG. 4} in FIG. 6 is a view along arrow G in FIG. four; Fig. 7; the device at the end of the working position, side view; in fig. 8 is a section d-d in FIG. 7; in fig. 9 is a view along arrow E of FIG. 7 / in FIG. 10 is ready pipe storage, longitudinal section; in fig. 11 - section MF in FIG. ten; in fig. 12 shows section 3-3 in FIG. ten; in fig. 13 is a view along arrow EI of FIG. 1. A device for vacuum forming products from polymeric materials contains a form made in the form of pivotally connected lower 1 and upper 2 semi-forms. The bottom half-form 1 is fixed on the plate 3, and the top half-form 2 has a bracket 4, which is pivotally connected via an axis 5 and connected to the bracket b mounted on the plate 3. On the bottom half-form 1c of the front side, the axis 5 of the hinge is located, ycTat is fixed with the possibility of reciprocating movement conical tube 7, mounted in the middle of the plate 8, having a sleeve 11 T, which are mounted on cylindrical guides 10. The sleeve 9 is preloaded by cylindrical springs 11, the force of which is adjusted by adjusting nuts 12. In the tail second part of the conical tube 7 perpendicular to its axis are made tides 13 connected to the bracket 14. The axis 4 is mounted pastiaa follower 15 contacting the osyu14. A slot 16 is made on the copier plate 15 (FIG. 4) to enter the axis 14 therein and hold the mold half 1 and in the initial position. Along the bottom in shape 1 in bearings 17 .1 and 2 | pivotally mounted latch 18 is provided at one end with an emphasis 19, and at the other - with a swivel lever. gom 20 fig. .6) connected by means of a hinge 21 to a pusher 22 held in the initial position by a spring 23. On the upper mold 2, the C-shaped lever 24 is pivotally attached to the clamp of half-molds 1 and 2, and the upper pan-half 2 is lifted by lever 25. On lateral sides of the upper half-form 2 are fixed guides 26 (Fig. 13), made in the form of plates with radius chamfers 27f that allow you to precisely align: the lower and upper half-forms 1 and 2 Dfig. 1 and 2). In order to maintain the efficiency, for example, when forming a cut, a half-flange 28 and 29 with trays of elliptical cross section (. Fig. 1 and 2) are mounted on the pipe from the front side of the lower and upper half-molds 1 and 2. To securely seal the vacuum half-forms 1 and 2, when they are closed, the lower half-form 1 and semi-flanges 28 and 29 have grooves 30 and 31, which are filled with sealing material 32 (for example, heat-resistant rubber. For example, heat pipes 1 and 2 have chambers 33, : communicating channels 34 with the cavity for molding the product. Kame {x 33: have holes 35 for connecting to the evacuation system .. I The device works as follows. On a serial extruder, an elliptical cross-section 36 (Fig. 11) is poured from a polymeric material, for example from ud a styrene sterol b copolymer with methyl methacrylate of the SME brand manufactured by domestic industry, then cut to size and one end equal to the length of the bell, heated in a thermostat to 170-180 ° C, after which it is placed in a fixed bed on the half-flange 2 with the bottom vacuum. Fig. 1) and handle 25 lower the mold half 2. Direction 26, having a radius of 27, ensure smooth and coaxial clamping of half-molds 1 and 2. At the same time, the copier plate 15 releases the axis 16 from the socket 16). and conical plug 7, fastened On the strip 8, under the action of the springs 11, it moves along the guides 10 until the strip 8 comes into contact with the stop 19 of the hinge latch 18 (Fig. 4-6J. When turning the C-armraf of the lever 24, the closure of the half-form along the hour; (Fig. 9, its end acts on the pusher 22, which, through the lever 20 and the hinge 21, turns in the bearings 17 the hinge latch 18 together with the stop 19, the Stop 19 releases the bar 8, and the conical plug 7 under the influence of the spring 11 seals the end of the warmed pipes 36 (Figs. 7 and 8). At this moment, the vacuum created through the holes 35, cavities 33 and channels 34 forms a socket in the pop-ups 1 and 2. At the end of the molding at the ps collar ptanara 24 against the hour hand and rising the top half of the form 2 by the handle 25, the copier plate 15 is affected t on the axis 14, thereby withdrawing the conical plug 7 to the rearmost position. The upper mold half 2 is held in a raised position by means of an axis 14 mounted in the socket 16 of the copier plate 15. The spring 23 through the push rod 22, the hinge 21 and the lever 20 BOSBpcunaetr zigselku 18 with an emphasis 19 to its original position. After cooling to the end of the bell, process according to a pattern in order to obtain a given shape (in FIG. 7 is shown with a dotted line). Then the cycle repeats. The annual capacity of the equipment set is 1000.0 tubes. The economic effect from the introduction of the proposed device will be 179.8 thousand rubles. The use of the invention will increase the service life of pipe collectors by a factor of 2-3 due to the manufacture of pipes with a socket from the whole element and not from composite parts by gluing together, as imported pipes are made, to simplify the design of the pipe, to prevent fish hooks for the joints of pipe bonding and improve them sanitization. W ff 9 7 / f- / f 30 fZZ-ZfZ / f fO 8 19 n Fig 2 35 W IQ 34 JJ will beat Phi & l h k 3 /

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Claims (2)

1. DEVICE FOR VACUUM FORMING OF PRODUCTS FROM POLYMERIC MATERIALS, containing a mold, the forming cavity of which is communicated by channels with a vacuum system, characterized by gem, which, in order to form a complex profile at the end of the pipe, is made in the form of articulated joints and equipped with mounted on the lower half-frame a spring-loaded stopper for sealing the end of the pipe and a latch pivotally mounted along the lower half of the mold, provided with a stop at one end that interacts with the stopper, and rotary at the other end a lever with a pusher, and the upper mold half attached to the C-shaped lever clamping mold halves cooperating with a latch follower and a guiding plate; _β for interacting with the cork, moreover (B is fixed on the side of one of the half-forms. I 2. The device according to π. 2, characterized in that on the contact surface of the half-molds around the perimeter are made: grooves filled with heat-resistant rubber.