Upper and lower mold structure of thick sheet blister machine

Abstract

The utility model discloses a kind of upper and lower mould structures of thick sheet blister machine, including rack, upper mould structure and lower mould structure, the upper mould structure includes the upper mould base plate of lifting ground setting in the upper portion of rack, the lower mould structure includes the lower mould forming frame of lifting ground setting in the lower portion of rack, the wellhead plate with wellhead is set between the upper mould base plate and lower mould forming frame and located in the middle portion of rack, at least two groups of guiding components respectively connected with rack and lower mould forming frame are respectively provided in the both sides of lower mould forming frame, at least two groups of traction components connected with lower mould forming frame are respectively provided in the both sides of lower mould forming frame, first driving assembly connected with traction component is provided in the lower portion of rack.The utility model can improve the stability of lower mould forming frame movement, to ensure that forming operation is orderly carried out, reduce the mechanical failure of operation process.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming technology for vacuum forming machines, specifically to an upper and lower mold structure for a thick sheet vacuum forming machine. Background Technology

[0002] A vacuum forming machine is a device that integrates heating, vacuum adsorption forming, cooling, and demolding functions. It primarily uses vacuum suction to adsorb heated and softened plastic sheets onto a mold for shaping, specifically for processing flat plastic sheets into various three-dimensional plastic products. Based on the thickness of the sheet material it processes, vacuum forming machines can be divided into thin-sheet vacuum forming machines and thick-sheet vacuum forming machines.

[0003] During the vacuum forming process, the upper and / or lower mold platforms of the mold need to reciprocate longitudinally to cooperate with the vacuum system to adsorb and shape the plastic sheet. However, for thick sheet vacuum forming machines, due to the influence of the thick sheet material, the mold platform structure is relatively complex and bulky. It is difficult for the mold platform to maintain stable movement during operation, and mechanical failures are prone to occur during actual operation, leading to machine downtime and affecting production efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an upper and lower mold structure for a thick sheet vacuum forming machine, which has stable power output and can improve the stability of the movement of the lower mold forming frame to ensure orderly forming operation and reduce mechanical failures during operation, thereby solving the problem of unstable operation and easy mechanical failures of the existing thick sheet vacuum forming machine mold table structure mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thick sheet vacuum forming machine includes a frame, an upper mold structure, and a lower mold structure. The upper mold structure includes an upper mold base plate that is vertically mounted on the upper part of the frame. The lower mold structure includes a lower mold forming frame that is vertically mounted on the lower part of the frame. An opening plate with an opening is provided between the upper mold base plate and the lower mold forming frame, located in the middle of the frame. At least two sets of guide components connected to the frame and the lower mold forming frame are respectively provided on both sides of the lower mold forming frame. At least two sets of traction components connected to the lower mold forming frame are respectively provided on both sides of the lower mold forming frame. A first drive component connected to the traction components is provided at the lower part of the frame.

[0007] Preferably, each traction assembly includes an upper sprocket, a lower sprocket, and a conveyor belt. The upper sprocket and the lower sprocket are arranged vertically opposite each other in the frame, and the conveyor belt is wound around the upper sprocket and the lower sprocket. A locking block connected to one side of the conveyor belt is connected to the side wall of the lower mold forming frame.

[0008] Preferably, the first drive assembly includes a rotating shaft and a first motor. There are two rotating shafts, which are respectively rotatably mounted on both sides of the lower mold forming frame via bearings. The first motor is mounted on the bottom of the frame. The output shaft of the first motor is connected to a drive wheel. One end of the rotating shaft is connected to a driven wheel. The drive wheel and the driven wheel are connected by a belt or chain. The lower sprocket is mounted on the rotating shaft.

[0009] Preferably, each set of guide components includes a guide rod and a roller. The guide rod is upright on one side of the lower mold forming frame, and the roller is rotatably disposed on the side of the lower mold forming frame. The roller is provided with an arc-shaped groove that presses against the outer circumferential surface of the guide rod.

[0010] Preferably, the lower mold structure includes a top cover plate covering the top of the lower mold forming frame and several side plates covering the periphery of the lower mold forming frame, wherein the top cover plate has two parallel elongated holes in the middle.

[0011] Preferably, the lower mold structure includes a lifting and forming component disposed within the lower mold forming frame. The lifting and forming component includes a fixed frame fixedly disposed on the lower mold forming frame, a lifting frame disposed vertically within the lower mold forming frame, and a second drive component connected to the lifting frame. The top surface of the lifting frame is provided with two guide rails corresponding to the two elongated holes.

[0012] Preferably, the second drive assembly includes a cylinder, a hinge plate, and a locking shaft. The cylinder is mounted on a fixed frame, and the two hinge plates are connected by the locking shaft. One hinge plate is connected upward to the bottom of the lifting frame, and the other hinge plate is connected downward to the piston rod of the cylinder.

[0013] Preferably, the upper mold structure includes an upper mold mounting plate and a third drive assembly. The upper mold mounting plate is fixed to the top of the frame, the upper mold base plate is flexibly disposed below the upper mold mounting plate, and the third drive assembly is disposed on the upper mold mounting plate.

[0014] Preferably, the third drive assembly includes a second motor, a synchronizer housing, a synchronizer drive shaft, and a cylindrical rack. The motor is mounted on the top surface of the upper mold mounting plate. There are two synchronizer housings, which are arranged opposite each other on the top surface of the upper mold mounting plate. The output shaft of the second motor is connected to the synchronizer drive shaft. There are two cylindrical racks, which are respectively mounted on the synchronizer housing by moving them vertically through the upper mold mounting plate. The bottom end of the cylindrical rack is connected to the bottom plate of the upper mold. Both ends of the synchronizer drive shaft extend into the synchronizer housing and are connected to gears at their extended ends. The gears mesh with the cylindrical racks through their teeth.

[0015] Preferably, the upper mold structure includes a sliding sleeve and a guide post. There are at least two sliding sleeves, which are arranged opposite each other on the top surface of the upper mold mounting plate. Each sliding sleeve is provided with a guide post that can move up and down. The lower end of the guide post passes through the upper mold mounting plate and connects to the upper mold base plate. A limiting frame is provided above the upper mold mounting plate and is connected to the two guide posts and the two cylindrical racks.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by driving all traction components to rise and fall synchronously through the same drive component, its power output is stable, which makes the lower mold forming frame connected to the traction component rise and fall stably. At the same time, the guide component restricts the lower mold forming frame within a certain range and guides the lower mold forming frame to rise and fall when the traction component drives the lower mold forming frame to rise and fall, which further improves the stability of the movement of the lower mold forming frame, reduces mechanical failures in the operation process, and ensures that the molding operation is carried out in an orderly manner. Attached Figure Description

[0017] Figure 1 This is a perspective view of the upper and lower mold structures of the thick sheet vacuum forming machine of this utility model;

[0018] Figure 2 This is a perspective view of the lower mold structure, guide assembly, and traction assembly of this utility model;

[0019] Figure 3 This is a three-dimensional view of the interior of the lower mold structure of this utility model;

[0020] Figure 4 This is a perspective view of the lifting and forming component of this utility model;

[0021] Figure 5 This is a three-dimensional representation of the upper mold structure of this utility model.

[0022] In the diagram: 1. Frame; 2. Upper mold structure; 21. Upper mold base plate; 22. Upper mold mounting plate; 23. Third drive assembly; 231. Second motor; 232. Synchronizer housing; 233. Synchronous drive shaft; 234. Cylindrical rack; 235. Sliding sleeve; 236. Guide post; 237. Limiting frame; 3. Lower mold structure; 31. Lower mold forming frame; 32. Top cover plate; 321. Long slot; 33. Side plate; 34. Lifting mechanism 341. Molding assembly; 342. Fixing frame; 343. Lifting frame; 344. Second drive assembly; 3431. Cylinder; 3432. Hinge plate; 3433. Locking shaft; 344. Guide rail; 4. Wellhead plate; 5. Guide assembly; 51. Guide rod; 52. Roller; 6. Traction assembly; 61. Upper sprocket; 62. Lower sprocket; 63. Conveyor belt; 64. Locking block; 7. First drive assembly; 71. Rotating shaft; 72. First motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 A thick sheet vacuum forming machine includes a frame 1, an upper mold structure 2, and a lower mold structure 3. The upper mold structure 2 includes an upper mold base plate 21 that is vertically mounted on the upper part of the frame 1. The lower mold structure 3 includes a lower mold forming frame 31 that is vertically mounted on the lower part of the frame 1. A well plate 4 with a well opening is provided between the upper mold base plate 21 and the lower mold forming frame 31, located in the middle of the frame 1. At least two sets of guide components 5 are respectively provided on both sides of the lower mold forming frame 31 and connected to the frame 1 and the lower mold forming frame 31. At least two sets of traction components 6 are respectively provided on both sides of the lower mold forming frame 31 and connected to the lower mold forming frame 31. A first drive component 7 connected to the traction components 6 is provided at the lower part of the frame 1.

[0025] This invention uses the same first driving component 7 to drive all traction components 6 to rise and fall synchronously, with stable power output, which makes the lower mold forming frame 31 connected to the traction component 6 rise and fall stably. At the same time, the guide component 5 restricts the lower mold forming frame 31 within a certain range and guides the lower mold forming frame 31 to rise and fall when the traction component 6 drives the lower mold forming frame 31, further improving the stability of the movement of the lower mold forming frame 31, reducing mechanical failures during operation, and ensuring that the molding operation is carried out in an orderly manner.

[0026] Please see Figure 1-2 Each traction assembly 6 includes an upper sprocket 61, a lower sprocket 62, and a conveyor belt 63. The upper sprocket 61 and the lower sprocket 62 are arranged vertically opposite each other in the frame 1, and the conveyor belt 63 is wound around the upper sprocket 61 and the lower sprocket 62. The side wall of the lower mold forming frame 31 is connected to a locking block 64 that is connected to one side of the conveyor belt 63. When the conveyor belt 63 moves in the vertical direction, it drives the lower mold forming frame 31 to move up and down through the locking block 64.

[0027] The first drive assembly 7 includes two rotating shafts 71 and a first motor 72. The rotating shafts 71 are rotatably mounted on both sides of the lower mold forming frame 31 via bearings. The first motor 72 is mounted at the bottom of the frame 1. The output shaft of the first motor 72 is connected to a drive wheel, and one end of each rotating shaft 71 is connected to a driven wheel. The drive wheel and the driven wheel are connected by a belt or chain. A lower sprocket 62 is mounted on the rotating shaft 71. During the molding operation, the first motor 72 drives the rotating shafts 71 on both sides of the lower mold forming frame 31 to rotate simultaneously. The rotating shafts 71, through the lower sprocket 62, drive the conveyor belt 63 and the lower mold forming frame 31 connected to the conveyor belt 63 to move up and down.

[0028] Please see Figure 2 Each set of guide components 5 includes a guide rod 51 and a roller 52. The guide rod 51 is upright on one side of the lower mold forming frame 31, and the roller 52 is rotatably disposed on the side of the lower mold forming frame 31. The roller 52 is provided with an arc-shaped groove that presses against the outer circumference of the guide rod 51. When the lower mold forming frame 31 is raised and lowered, the roller 52 rolls along the axial direction of the guide rod 51. The cooperation between the roller 52 and the guide rod 51 improves the stability of operation.

[0029] Please see Figure 3 The lower mold structure 3 includes a top cover plate 32 covering the top of the lower mold forming frame 31 and several side plates 33 covering the periphery of the lower mold forming frame 31. The top cover plate 32 has two parallel elongated holes 321 in the middle.

[0030] Please refer to 3-4. The lower mold structure 3 includes a lifting and forming component 34 disposed within the lower mold forming frame 31. The lifting and forming component 34 includes a fixed frame 341 fixedly disposed on the lower mold forming frame 31, a lifting frame 342 lifted and lowered within the lower mold forming frame 31, and a second drive component 343 connected to the lifting frame 342. In this embodiment, the top surface of the lifting frame 342 is provided with two guide rails 344 corresponding to the two elongated holes 321. The two guide rails 344 on the lifting frame 342 can move upward under the drive of the second drive component 343 and pass through the two elongated holes 321 to cooperate with the upper mold structure 2 for thermoforming.

[0031] The second drive assembly 343 includes a cylinder 3431, a hinge plate 3432, and a locking shaft 3433. The cylinder 3431 is mounted on the fixed frame 341. The two hinge plates 3432 are connected by the locking shaft 3433. One hinge plate 3432 is connected upward to the bottom of the lifting frame 342, and the other hinge plate 3432 is connected downward to the piston rod of the cylinder 3431. The cylinder 3431 drives the lifting frame 342 to rise and fall relative to the fixed frame 341.

[0032] Please see Figure 5The upper mold structure 2 includes an upper mold mounting plate 22 and a third drive component 23. The upper mold mounting plate 22 is fixed to the top of the frame 1. The upper mold base plate 21 is flexibly disposed below the upper mold mounting plate 22. The third drive component 23 is disposed on the upper mold mounting plate 22 and is used to drive the upper mold base plate 21 to move up and down relative to the upper mold mounting plate 22.

[0033] The third drive assembly 23 includes a second motor 231, a synchronizer housing 232, a synchronizer drive shaft 233, and cylindrical racks 234. The motor is mounted on the top surface of the upper mold mounting plate 22. There are two synchronizer housings 232, which are arranged opposite each other on the top surface of the upper mold mounting plate 22. The output shaft of the second motor 231 is connected to the synchronizer drive shaft 233. There are two cylindrical racks 234, which are vertically mounted on the synchronizer housings 232 and pass through the upper mold mounting plate 22. The bottom end of the cylindrical rack 234 is connected to the upper mold base plate 21. Both ends of the synchronizer drive shaft 233 extend into the synchronizer housing 232 and are connected to gears (not shown in the figure) at their extended ends. The gears mesh with the cylindrical racks 234 through their teeth. During the molding operation, the second motor 231 rotates, driving the synchronizer drive shaft 233 to rotate. The synchronizer drive shaft 233 drives the cylindrical racks 234 to move up or down through the gears, thereby realizing the lifting and lowering of the upper mold base plate 21.

[0034] Please see Figure 5 The upper mold structure 2 includes a sliding sleeve 235 and a guide post 236. There are at least two sliding sleeves 235, which are arranged opposite each other on the top surface of the upper mold mounting plate 22. Each sliding sleeve 235 is provided with a guide post 236 that can move up and down. The lower end of the guide post 236 passes through the upper mold mounting plate 22 and connects to the upper mold base plate 21 to guide the upper mold base plate 21 to rise and fall stably.

[0035] A limiting frame 237 is provided above the upper mold mounting plate 22, which is connected to the two guide pillars 236 and the two cylindrical racks 234. In this embodiment, the limiting frame 237 connects the two guide pillars 236 and the cylindrical racks 234 together, which enables the cylindrical racks 234 and the guide pillars 236 to move synchronously and is not prone to deviation, thereby further improving the stability of the upper mold base plate 21 in raising and lowering.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thick sheet vacuum forming machine with upper and lower mold structures, comprising a frame (1), an upper mold structure (2), and a lower mold structure (3), characterized in that: The upper mold structure (2) includes an upper mold base plate (21) that is vertically mounted on the upper part of the frame (1), and the lower mold structure (3) includes a lower mold forming frame (31) that is vertically mounted on the lower part of the frame (1). A wellhead plate (4) with a wellhead is located in the middle of the frame (1) between the upper mold base plate (21) and the lower mold forming frame (31). At least two sets of guide components (5) that are respectively connected to the frame (1) and the lower mold forming frame (31) are respectively provided on both sides of the lower mold forming frame (31). At least two sets of traction components (6) that are connected to the lower mold forming frame (31) are respectively provided on both sides of the lower mold forming frame (31). A first drive component (7) that is connected to the traction component (6) is provided at the lower part of the frame (1).

2. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 1, characterized in that: Each traction assembly (6) includes an upper sprocket (61), a lower sprocket (62), and a conveyor belt (63). The upper sprocket (61) and the lower sprocket (62) are arranged vertically opposite each other in the frame (1). The conveyor belt (63) is wound around the upper sprocket (61) and the lower sprocket (62). The side wall of the lower mold forming frame (31) is connected to a locking block (64) that is connected to one side of the conveyor belt (63).

3. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 2, characterized in that: The first drive assembly (7) includes a rotating shaft (71) and a first motor (72). There are two rotating shafts (71), which are respectively rotatably mounted on both sides of the lower mold forming frame (31) via bearings. The first motor (72) is mounted at the bottom of the frame (1). The output shaft of the first motor (72) is connected to a drive wheel. One end of the rotating shaft (71) is connected to a driven wheel. The drive wheel and the driven wheel are connected by a belt or chain. The lower sprocket (62) is mounted on the rotating shaft (71).

4. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 1, characterized in that: Each of the guide components (5) includes a guide rod (51) and a roller (52). The guide rod (51) is upright on one side of the lower mold forming frame (31), and the roller (52) is rotatably disposed on the side of the lower mold forming frame (31). The roller (52) is provided with an arc-shaped groove that presses against the outer circumferential surface of the guide rod (51).

5. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 1, characterized in that: The lower mold structure (3) includes a top cover plate (32) covering the top of the lower mold forming frame (31) and several side plates (33) covering the periphery of the lower mold forming frame (31). The top cover plate (32) has two parallel elongated holes (321) in the middle.

6. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 5, characterized in that: The lower mold structure (3) includes a lifting forming component (34) disposed in the lower mold forming frame (31). The lifting forming component (34) includes a fixed frame (341) fixedly disposed on the lower mold forming frame (31), a lifting frame (342) disposed in the lower mold forming frame (31), and a second drive component (343) connected to the lifting frame (342). The top surface of the lifting frame (342) is covered with two guide rails (344) corresponding to the two elongated holes (321).

7. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 6, characterized in that: The second drive assembly (343) includes a cylinder (3431), a hinge plate (3432), and a locking shaft (3433). The cylinder (3431) is mounted on a fixed frame (341), and the two hinge plates (3432) are connected by the locking shaft (3433). One hinge plate (3432) is connected upward to the bottom of the lifting frame (342), and the other hinge plate (3432) is connected downward to the piston rod of the cylinder (3431).

8. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 1, characterized in that: The upper mold structure (2) includes an upper mold mounting plate (22) and a third drive assembly (23). The upper mold mounting plate (22) is fixed to the top of the frame (1). The upper mold base plate (21) is vertically mounted below the upper mold mounting plate (22). The third drive assembly (23) is mounted on the upper mold mounting plate (22).

9. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 8, characterized in that: The third drive assembly (23) includes a second motor (231), a synchronizer housing (232), a synchronizer drive shaft (233), and a cylindrical rack (234). The motor is mounted on the top surface of the upper mold mounting plate (22). There are two synchronizer housings (232), which are arranged opposite each other on the top surface of the upper mold mounting plate (22). The output shaft of the second motor (231) is connected to the synchronizer drive shaft (233). There are two cylindrical racks (234), which are respectively mounted on the synchronizer housing (232) through the upper mold mounting plate (22). The bottom end of the cylindrical rack (234) is connected to the bottom plate (21) of the upper mold. Both ends of the synchronizer drive shaft (233) extend into the synchronizer housing (232) and are connected to gears at their extended ends. The gears mesh with the cylindrical racks (234) through their teeth.

10. The upper and lower mold structure of the thick sheet vacuum forming machine according to claim 9, characterized in that: The upper mold structure (2) includes a sliding sleeve (235) and a guide post (236). There are at least two sliding sleeves (235), which are arranged opposite each other on the top surface of the upper mold mounting plate (22). Each sliding sleeve (235) is provided with a guide post (236) that can move up and down. The lower end of the guide post (236) passes through the upper mold mounting plate (22) and connects to the upper mold base plate (21). A limiting frame (237) is provided above the upper mold mounting plate (22) and is connected to the two guide posts (236) and the two cylindrical racks (234).

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