Vacuum plastic suction machine

Abstract

The invention relates to the field of plastic vacuum forming machine devices, in particular to a vacuum plastic vacuum forming machine which comprises a rack, a rotating disc is arranged on the rack and driven by a motor to rotate, a plurality of bases are evenly fixed to the rotating disc, forming grooves are formed in the bases, and the bottoms of the forming grooves are connected with a vacuum pump through air pipes. Supporting shafts are fixed to the bases, cover plates rotationally connected with the supporting shafts are arranged on the supporting shafts, torsional springs are further fixed to the supporting shafts, the tail ends of the torsional springs are fixed to the cover plates, sliding grooves penetrating through the bases are further formed in the bases, and limiting rods are further arranged on the bases. A sliding groove is formed in the base, the limiting rod penetrates through the sliding groove and is in sliding connection with the sliding groove, a plurality of positioning holes are further formed in the position, in the sliding groove, of the base, springs are fixed to the positions, corresponding to the positioning holes, of the limiting rod, and a push rod is further fixed to the limiting rod and is in sliding connection with the base. The device is used for producing products in a vacuum plastic uptake mode.

Description

Technical Field

[0001] The invention relates to the field of vacuum forming machine devices, in particular to a vacuum vacuum forming machine. Background Art

[0002] Blistering is a plastic processing technology. Its principle is to heat and melt the raw material particles in the extruder at high temperature, then extrude and pull the sheet. After the sheet is rolled up, it is placed in a ventilated and humid environment to cool. After that, the sheet is heated to a sufficient temperature and then transported to the blister machine for vacuum blister forming. Vacuum blister forming mainly includes concave mold vacuum forming and convex mold vacuum forming. During concave mold vacuum forming, the sheet is fixed above the mold cavity, and the air in the mold cavity is extracted to allow the sheet to be sucked into the mold cavity. This process is mainly suitable for products with high surface precision and low molding depth.

[0003] Patent application number: CN202420273170.6 discloses a vacuum forming machine, including a frame; a molding mechanism and a heating mechanism are installed on the frame, and the heating mechanism is located below the molding mechanism; the molding mechanism includes a workbench, and an exhaust port is opened on the workbench, and the exhaust port is connected to a vacuum pump; a top frame used in conjunction with the workbench is hinged on the frame, and a silicone film is provided on the top frame. After the top frame is covered on the workbench, a closed molding cavity is formed between the top frame and the workbench, and a sheet is placed in the molding cavity for vacuum forming. However, the temperature of the molded product is relatively high, and the product needs to be cooled before it can be taken out, resulting in a long waiting time for molding, which seriously affects production efficiency.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a vacuum forming machine.

[0006] The present invention can be implemented by the following technical solutions:

[0007] The present invention discloses a vacuum forming machine, comprising a frame, a turntable is arranged on the frame, the turntable is driven to rotate by a motor, a plurality of bases are evenly fixed on the turntable, the bases are all provided with forming grooves, the bottoms of the forming grooves are all connected to vacuum pumps through air pipes, support shafts are fixed on the bases, the support shafts are all provided with cover plates rotatably connected to the support shafts, torsion springs are also fixed on the support shafts, the ends of the torsion springs are all fixed to the cover plates, a slide groove penetrating the base is also arranged on the base, a limit rod is also arranged on the base, the limit rod passes through the slide groove and It is slidably connected to the slide slot, and a plurality of positioning holes are also provided on the base in the slide slot. Springs are fixed to the corresponding positions of the limit rod and the positioning holes, and a push rod is fixed to the limit rod. The push rod is slidably connected to the base, and a push block is fixed to the end of the push rod. Positioning blocks are fixed to both ends of the cover plate, and limiting grooves are provided on the positioning block at positions corresponding to the limit rod. A vertical plate is also fixed on the frame, a cylinder is fixed on the vertical plate, and a fixed block is fixed to the end of the piston rod of the cylinder. A heating box is also fixed on the frame, and an electric heating plate is fixed in the heating box under the turntable. Put the film into the molding groove, cover the base with the cover plate to seal the molding groove, when the cover plate rotates around the supporting shaft, due to the inclined setting of the bottom of the positioning block, after the positioning block contacts the limit rod, the positioning block pushes the limit rod to slide in the slide groove, after the cover plate covers the base, the limit rod reaches the limit groove position, the limit rod is hooked through the limit groove to cover the base to seal the molding groove, after the molding groove is sealed, the turntable is driven to rotate by the motor, the base rotates with the turntable, the film reaches the heating box position, the electric heating plate is energized to soften the film, and the vacuum pump evacuates the corresponding base, and the vacuum is stopped after the film forms the corresponding shape, the motor drives the turntable to rotate again, the base rotates with the turntable, and the bottom of the molded product is The seat is separated from the heating box, and the next film arrives in the heating box for heating and forming. The cycle operation is repeated. The base of the formed product reaches the cylinder position, the cylinder is started, the piston rod on the cylinder extends, the fixed block contacts the corresponding push block and pushes the limit rod to move. After the limit rod is separated from the positioning block, the torsion spring acts, and the torsion spring drives the cover plate to rotate around the cover plate. After the molding groove is opened, the product cools naturally, and then the product is removed and the film is placed in the molding groove again. The cycle operation is repeated. This device produces products by vacuum forming, and the film is softened and formed by passing through the heating box position in turn. After forming, it is rotated outside the heating box for natural cooling. There is no need to wait for cooling before removing the product for the next molding, which greatly improves the production efficiency of the product.

[0008] Preferably, an electromagnet is fixed on the base, and a metal plate is fixed on the cover at a position corresponding to the electromagnet.

[0009] Preferably, positioning rods are fixed at positions corresponding to the limiting rod and the positioning hole, and the end of the positioning rod is arranged in the positioning hole and is slidably connected to the positioning hole.

[0010] Preferably, a top plate is fixed on the vertical plate, and a plurality of fans are fixed on the top plate to accelerate the cooling of the product and avoid scalding the staff.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The device produces products by vacuum forming, and passes the film through the heating box position in turn for softening and forming by vacuum forming. After forming, it is rotated outside the heating box for natural cooling. There is no need to wait for cooling before removing the product for the next forming, which greatly improves the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is another structural schematic diagram of the present invention from another angle;

[0016] Figure 3 for Figure 2 Sectional view at AA;

[0017] Figure 4 for Figure 2 Sectional view at the middle BB;

[0018] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0019] Figure 6 for Figure 3 Enlarged view of point D in the middle;

[0020] In the figure: 1, frame; 2, turntable; 3, motor; 4, base; 5, support shaft; 6, torsion spring; 7, cover plate; 8, limit rod; 9, slide groove; 10, positioning hole; 11, positioning rod; 12, spring; 13, positioning block; 14, limit groove; 15, push rod; 16, push block; 17, vertical plate; 18, cylinder; 19, fixed block; 20, top plate; 21, fan; 22, heating box; 23, electric heating plate; 24, electromagnet; 25, metal plate; 26, forming groove; DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0022] Embodiment 1:

[0023] like Figures 1 to 6As shown, this embodiment discloses a vacuum forming machine, comprising a frame 1, a turntable 2 is arranged on the frame 1, the turntable 2 is driven to rotate by a motor 3, a plurality of bases 4 are evenly fixed on the turntable 2, a forming groove 26 is arranged on the base 4, the bottom of the forming groove 26 is connected to a vacuum pump through an air pipe, a support shaft 5 is fixed on the base 4, a cover plate 7 rotatably connected to the support shaft 5 is arranged on the support shaft 5, a torsion spring 6 is also fixed on the support shaft 5, the ends of the torsion spring 6 are fixed to the cover plate 7, a slide groove 9 penetrating the base 4 is also arranged on the base 4, a limit rod 8 is also arranged on the base 4, the limit rod 8 passes through the slide groove 9 and is slidably connected to the slide groove 9 A plurality of positioning holes 10 are also provided on the base 4 in the slide groove 9, and springs 12 are fixed at the corresponding positions of the limit rod 8 and the positioning holes 10. A push rod 15 is also fixed on the limit rod 8, and the push rod 15 is slidably connected to the base 4. A push block 16 is fixed at the end of the push rod 15. Positioning blocks 13 are fixed at both ends of the cover plate 7, and a limiting groove 14 is provided on the positioning block 13 at a position corresponding to the limit rod 8. A vertical plate 17 is also fixed on the frame 1, and a cylinder 18 is fixed on the vertical plate 17. A fixed block 19 is fixed at the end of the piston rod of the cylinder 18. A heating box 22 is also fixed on the frame 1, and an electric heating plate 23 is fixed in the heating box 22 below the turntable 2. The film is placed in the molding groove 26, and the cover plate 7 is covered on the base 4 to seal the molding groove 26. When the cover plate 7 rotates around the support shaft 5, due to the inclined setting of the bottom of the positioning block 13, after the positioning block 13 contacts the limiting rod 8, the positioning block 13 pushes the limiting rod 8 to slide in the slide groove 9. After the cover plate 7 covers the base 4, the limiting rod 8 reaches the position of the limiting groove 14, and the limiting rod 8 is hooked through the limiting groove 14 to cover the cover plate 7 on the base 4 to achieve the sealing of the molding groove 26. After the molding groove 26 is sealed, the turntable 2 is driven to rotate by the motor 3, and the base 4 rotates with the turntable 2. The film reaches the position of the heating box 22, and the electric heating plate 23 is energized to soften the film, and the vacuum pump is vacuumed on the corresponding base 4. After the film forms the corresponding shape, the vacuuming is stopped, and the motor 3 drives the turntable 2 to rotate again, and the base 4 rotates with the turntable 2. The base 4 of the molded product is separated from the heating box 22, and the next film arrives at the heating box 22 for heating and molding, and the cycle operation is repeated. The base 4 of the molded product arrives at the position of the cylinder 18, and the cylinder 18 is started. The piston rod on the cylinder 18 is extended, and the fixed block 19 contacts the corresponding push block 16 to push the limit rod 8 to move. After the limit rod 8 is separated from the positioning block 13, the torsion spring 6 acts, and the torsion spring 6 drives the cover plate 7 to rotate around the cover plate 7. After the molding groove 26 is opened, the product cools naturally, and then the product is removed and the film is placed in the molding groove 26 again, and the cycle operation is repeated. The device produces products by vacuum forming, and the film is softened and formed by passing through the heating box 22 position in turn. After forming, it is rotated to the outside of the heating box 22 for natural cooling. There is no need to wait for cooling before removing the product for the next molding, which greatly improves the production efficiency of the product.

[0024] The base 4 is fixed with an electromagnet 24 , and the cover 7 is fixed with a metal plate 25 at a position corresponding to the electromagnet 24 .

[0025] Among them, positioning rods 11 are fixed at corresponding positions of the limiting rod 8 and the positioning hole 10 , and the end of the positioning rod 11 is arranged in the positioning hole 10 and is slidably connected to the positioning hole 10 .

[0026] Embodiment 2:

[0027] This embodiment discloses a vacuum forming machine. Based on the structure and principle of the first embodiment, a top plate 20 is fixed on the vertical plate 17 of this embodiment, and a plurality of fans 21 are fixed on the top plate 20. The fans 21 accelerate the cooling of the product to avoid scalding the staff.

[0028] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum forming machine, comprising a frame, characterized in that: The frame is provided with a turntable, which is driven to rotate by a motor, and a plurality of bases are evenly fixed on the turntable, each of which is provided with a molding groove, and the bottom of each molding groove is connected to a vacuum pump through an air pipe, and a support shaft is fixed on each base, and a cover plate rotatably connected to the support shaft is provided on each support shaft, and a torsion spring is also fixed on the support shaft, and the end of each torsion spring is fixed to the cover plate, and a slide groove penetrating the base is also provided on the base, and a limit rod is also provided on the base, and the limit rod passes through the slide groove and is slidably connected to the slide groove, and the A plurality of positioning holes are also provided on the base in the slide groove, and springs are fixed at positions corresponding to the limiting rods and the positioning holes, and a push rod is also fixed on the limiting rod, and the push rod is slidably connected to the base, and a push block is fixed at the end of the push rod, and positioning blocks are fixed at both ends of the cover plate, and limiting grooves are provided on the positioning blocks at positions corresponding to the limiting rods, and a vertical plate is also fixed on the frame, and a cylinder is fixed on the vertical plate, and a fixed block is fixed at the end of the piston rod of the cylinder, and a heating box is also fixed on the frame, and an electric heating plate is fixed in the heating box under the turntable.

2. The vacuum forming machine according to claim 1, characterized in that: The base is fixed with an electromagnet, and the cover is fixed with a metal plate at a position corresponding to the electromagnet.

3. The vacuum forming machine according to claim 1, characterized in that: Positioning rods are fixed at positions corresponding to the limiting rods and the positioning holes, and the ends of the positioning rods are arranged in the positioning holes and are slidably connected to the positioning holes.

4. The vacuum forming machine according to claim 1, characterized in that: A top plate is also fixed on the vertical plate, and a plurality of fans are also fixed on the top plate.

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