Air suction device of plastic vacuum forming machine

Abstract

The utility model discloses an air suction device of a plastic vacuum forming machine, which relates to the technical field of air suction devices, and comprises an air suction device main body, a top plate positioned above the air suction device main body and a plurality of through holes formed in the top plate, and a connecting mechanism is arranged between the air suction device main body and the top plate. The bolt assembly is arranged on the side edge of the air suction device body. The limiting assembly is arranged on the side edge of the top plate, and the limiting assembly can be connected with the plug pin assembly in a matched mode; the sealing assembly is arranged on the top of the air suction device body in a circle surrounding mode. According to the air suction device, through the arrangement of the connecting mechanism, the top plate and the air suction device body can be conveniently and rapidly connected or detached through the plug pin assembly and the limiting assembly, and therefore the top plate with a through hole can be conveniently replaced or cleaned; and a good sealing effect is achieved after the top plate and the air suction device body are connected.

Description

Technical Field

[0001] The utility model relates to the field of air suction devices, in particular to an air suction device of a vacuum forming machine. Background Art

[0002] The blister machine is mainly used in the packaging field. It uses the vacuum suction force generated by a vacuum pump to heat and soften thermoplastic plastic sheets such as PVC and PET into vacuum covers, blister trays, bubble shells, etc. in various shapes through molds. The device that produces the suction function is the suction device on the blister machine.

[0003] For example, the suction device of a vacuum forming machine disclosed in the authorization announcement number CN218985719 U starts the vacuum pump, and the air pressure in the placement box is reduced under the action of the suction pipe and the diversion pipe. The first through groove and the second through groove are arranged to evenly suck out the gas in the placement box, and through holes are provided on the upper surface of the placement box, so that the gas in the plastic can be evenly sucked out, thereby solving the problem that the plastic material in the part is easily broken due to suction at one position all the time, and the problem that the plastic is easily heated unevenly if the suction speed is too fast, thereby improving the molding effect.

[0004] However, in order to solve the problem of a single through hole, many through holes are set. Since the plate where the through hole is located cannot be disassembled and replaced, when facing different molds, it is impossible to replace the plate with through holes in suitable positions, which may cause part of the mold components to be stuck in the through hole. At the same time, it is also not convenient to disassemble and clean it. For this reason, we propose a suction device for a blister machine. Utility Model Content

[0005] The purpose of the utility model is to provide an air suction device for a vacuum forming machine. By setting a connecting mechanism, it is convenient to use a latch assembly and a limit assembly to quickly connect or disassemble a top plate and a main body of the air suction device, thereby facilitating the replacement or cleaning of the top plate with a through hole. At the same time, a sealing assembly is provided to facilitate a better sealing effect after the top plate is connected to the main body of the air suction device.

[0006] To achieve the above object, the utility model provides the following technical solution: an air suction device of a vacuum forming machine, comprising an air suction device body, a top plate located above the air suction device body, and a plurality of through holes provided on the top plate, wherein a connecting mechanism is provided between the air suction device body and the top plate, and the connecting mechanism comprises:

[0007] A latch assembly, wherein the latch assembly is arranged on the side of the air suction device body;

[0008] A limit assembly, wherein the limit assembly is arranged on the side of the top plate, and the limit assembly can be matched and connected with the latch assembly;

[0009] A sealing component, wherein the sealing component is arranged around the top of the air intake device body and is used to fill the gap at the connection between the air intake device body and the top plate;

[0010] The extrusion assembly is arranged on the latch assembly, and the extrusion assembly can make the top plate squeeze the sealing assembly.

[0011] Preferably, the latch assembly includes two fixed sleeves fixedly connected to the middle part of the suction device body, a rotating round block rotatably arranged between the two fixed sleeves, two driving threaded rods fixedly connected to the side edges of the rotating round block, and an insertion rod threadedly connected to the outer surface of the driving threaded rod, and a driving threaded hole matching the outer surface of the corresponding driving threaded rod is opened in the middle of the insertion rod.

[0012] Preferably, the sealing assembly comprises a frame-shaped sealing gasket fixedly connected to the top of the air suction device body, an arc-shaped sealing gasket fixedly connected to the top side of the frame-shaped sealing gasket, and an eight-shaped sealing gasket fixedly connected to the inside of the arc-shaped sealing gasket.

[0013] Preferably, the limiting assembly includes two limiting rods fixedly connected to the outer surface of the air suction device body and a limiting groove formed at one end of the limiting rods.

[0014] Preferably, the extrusion assembly includes a groove opened at the end of the insertion rod, a movable rod inserted into the groove, an extrusion block fixedly connected to one end of the movable rod, and an extrusion spring sleeved on the outer surface of the movable rod.

[0015] Preferably, the outer contour of the extrusion block is fan-shaped, and the bottom end of the extrusion block abuts against the bottom end of the limiting groove.

[0016] Technical effects and advantages of the utility model:

[0017] By driving the latch assembly, the latch assembly is no longer connected to the limit assembly, so that the top plate is lifted up for replacement, and the top plate is replaced with a top plate with a through hole in a suitable position, so that the top plate can cooperate with the mold to be packaged, and then the suitable top plate is placed on the suction device body, so that the top plate squeezes the sealing assembly, thereby sealing the connection between the suction device body and the top plate, so that the gas can better enter from the through hole, and then complete the connection between the top plate and the suction device body. This design facilitates the use of the latch assembly and the limit assembly to quickly connect or disassemble the top plate and the suction device body, so that it is convenient to replace or clean the top plate with the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0021] Figure 4 This is a schematic diagram of the sealing component structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the connection between the latch assembly and the limit assembly of the utility model.

[0023] Figure 6 For this utility model Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0024] In the figure: 1. suction device body; 2. top plate; 3. through hole; 4. latch assembly; 401. fixed sleeve; 402. rotating round block; 403. driving threaded rod; 404. driving threaded hole; 405. plug rod; 5. extrusion assembly; 501. groove; 502. movable rod; 503. extrusion block; 504. extrusion spring; 6. sealing assembly; 601. frame-type sealing gasket; 602. arc-shaped sealing gasket; 603. figure-eight sealing gasket; 7. limit assembly; 701. limit rod; 702. limit groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1-6The suction device of the suction molding machine shown in the figure includes a suction device body 1, a top plate 2 located above the suction device body 1 and a plurality of through holes 3 opened on the top plate 2. A connecting mechanism is arranged between the suction device body 1 and the top plate 2, and the connecting mechanism includes: a latch assembly 4, which is arranged on the side of the suction device body 1; a limit assembly 7, which is arranged on the side of the top plate 2, and the limit assembly 7 can be matched and connected with the latch assembly 4; a sealing assembly 6, which is arranged around the top of the suction device body 1, and the sealing assembly 6 is used to fill the gap at the connection between the suction device body 1 and the top plate 2; an extrusion assembly 5, which is arranged on the latch assembly 4, and the extrusion assembly 5 can make The top plate 2 squeezes the sealing component 6; when the top plate 2 needs to be separated from the air suction device body 1, the latch component 4 is driven so that the latch component 4 is no longer connected to the limit component 7 for limit, so that the top plate 2 is lifted up to facilitate replacement of the top plate 2, so as to replace it with a top plate 2 with a through hole 3 in a suitable position, so that the top plate 2 can cooperate with the mold required for packaging, and then the suitable top plate 2 is placed on the air suction device body 1, so that the top plate 2 squeezes the sealing component 6, thereby sealing the connection between the air suction device body 1 and the top plate 2, so that the gas can better enter from the through hole 3, thereby completing a better connection between the top plate 2 and the air suction device body 1, and its connection mechanism is set to at least two, and is symmetrically distributed.

[0027] It should be further explained that the latch assembly 4 includes two fixed sleeves 401 fixedly connected to the middle part of the suction device body 1, a rotating round block 402 rotatably arranged between the two fixed sleeves 401, two driving threaded rods 403 fixedly connected to the sides of the rotating round block 402, and an insertion rod 405 threadedly connected to the outer surface of the driving threaded rod 403, and a driving threaded hole 404 adapted to the outer surface of the corresponding driving threaded rod 403 is provided in the middle of the insertion rod 405; the limiting assembly 7 includes two limiting rods 701 fixedly connected to the outer surface of the suction device body 1 and a limiting groove 702 provided at one end of the limiting rod 701; when it is necessary to connect the top plate 2 to the suction device body 1, the top plate 2 is placed from above the suction device body 1, Until the limiting groove 702 on the limiting rod 701 is aligned with the insertion rod 405, then rotate the rotating block 402, and the rotating block 402 drives the driving threaded rod 403 to rotate. Because the threads on the two driving threaded rods 403 are reverse threads to each other, and the external contour size of the insertion rod 405 is compatible with the internal contour size of the fixed sleeve 401, the driving threaded rod 403 is matched with the driving threaded hole 404 to move the insertion rod 405 so that the insertion rod 405 can be plugged into the limiting groove 702. At this time, the connection between the top plate 2 and the suction device body 1 is completed. When disassembly is required, reverse the rotating block 402 to reverse the driving threaded rod 403, thereby separating the insertion rod 405 from the limiting groove 702, and then the top plate 2 can be picked up.

[0028] It should be particularly noted that the extrusion assembly 5 includes a groove 501 opened at the end of the insertion rod 405, a movable rod 502 inserted into the groove 501, an extrusion block 503 fixedly connected to one end of the movable rod 502, and an extrusion spring 504 sleeved on the outer surface of the movable rod 502; the outer contour of the extrusion block 503 is fan-shaped, and the bottom end of the extrusion block 503 is abutted against the bottom end of the limiting groove 702. When the insertion rod 405 is gradually inserted into the limiting groove 702, the edge of the bottom end of the limiting groove 702 will squeeze the fan-shaped extrusion block 503, thereby causing the extrusion block 503 to move upward. As the extrusion block 503 gradually moves upward, the extrusion spring 504 is further compressed, so that the extrusion block 503 squeezes the limiting groove 702, so that the top plate 2 squeezes the sealing assembly 6, thereby achieving a better sealing effect.

[0029] Furthermore, the sealing assembly 6 includes a frame-shaped sealing gasket 601 fixedly connected to the top of the air suction device body 1, an arc-shaped sealing gasket 602 fixedly connected to the top side of the frame-shaped sealing gasket 601, and an eight-shaped sealing gasket 603 fixedly connected to the inside of the arc-shaped sealing gasket 602; when the top plate 2 is connected to the air suction device body 1, the top plate 2 will squeeze the arc-shaped sealing gasket 602, so that the arc-shaped convex part of the arc-shaped sealing gasket 602 is deformed, so that it is fully in contact with the inner wall surface of the top plate 2, thereby forming a At the same time, the figure-eight sealing gasket 603 can better support the arc-shaped sealing gasket 602 to prevent the arc-shaped sealing gasket 602 from being too soft and unable to achieve a good sealing effect. At the same time, when the extrusion block 503 squeezes the limiting groove 702, the bottom end of the top plate 2 will squeeze the frame-shaped sealing gasket 601 to form a secondary seal, thereby further improving the sealing effect of the sealing assembly 6, wherein the arc in the arc-shaped sealing gasket 602 and the figure-eight in the figure-eight sealing gasket 603 refer to the cross-sectional profile of the sealing gasket.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A vacuum device for a vacuum forming machine, comprising a vacuum device body (1), a top plate (2) located above the vacuum device body (1), and a plurality of through holes (3) provided on the top plate (2), characterized in that: A connection mechanism is provided between the air suction device body (1) and the top plate (2), and the connection mechanism comprises: A latch assembly (4), wherein the latch assembly (4) is arranged on a side of the air suction device body (1); A limit assembly (7), wherein the limit assembly (7) is arranged on a side of the top plate (2), and the limit assembly (7) can be matched and connected with the latch assembly (4); A sealing component (6), the sealing component (6) being arranged around the top of the air intake device body (1), and the sealing component (6) being used to fill a gap at a connection between the air intake device body (1) and the top plate (2); A pressing component (5) is arranged on the latch component (4), and the pressing component (5) can cause the top plate (2) to press the sealing component (6).

2. The suction device of the blister machine according to claim 1, characterized in that: The latch assembly (4) comprises two fixed sleeves (401) fixedly connected to the middle of the suction device body (1), a rotating round block (402) rotatably arranged between the two fixed sleeves (401), two driving threaded rods (403) fixedly connected to the side edges of the rotating round block (402), and an insertion rod (405) threadedly connected to the outer surface of the driving threaded rod (403), and a driving threaded hole (404) corresponding to the outer surface of the driving threaded rod (403) is provided in the middle of the insertion rod (405).

3. The suction device of the blister machine according to claim 1, characterized in that: The sealing assembly (6) comprises a frame-shaped sealing gasket (601) fixedly connected to the top of the air suction device body (1), an arc-shaped sealing gasket (602) fixedly connected to the top side of the frame-shaped sealing gasket (601), and an eight-shaped sealing gasket (603) fixedly connected to the inside of the arc-shaped sealing gasket (602).

4. The air suction device of a blister molding machine according to claim 1 or 2, characterized in that: The limiting assembly (7) comprises two limiting rods (701) fixedly connected to the outer surface of the air suction device body (1) and a limiting groove (702) formed at one end of the limiting rods (701).

5. The suction device of the blister machine according to claim 4, characterized in that: The extrusion assembly (5) comprises a groove (501) formed at the end of the insertion rod (405), a movable rod (502) inserted into the groove (501), an extrusion block (503) fixedly connected to one end of the movable rod (502), and an extrusion spring (504) sleeved on the outer surface of the movable rod (502).

6. The suction device of the blister machine according to claim 5, characterized in that: The outer contour of the extrusion block (503) is fan-shaped, and the bottom end of the extrusion block (503) abuts against the bottom end of the limiting groove (702).

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