Vacuum adsorption mechanism of plastic vacuum forming machine

Abstract

The utility model relates to the technical field of plastic vacuum forming machines, in particular to a vacuum adsorption mechanism of a plastic vacuum forming machine, which comprises a vacuum pump main body, an air suction pipe is mounted at the air suction end of the vacuum pump main body, and a branch pipe is clamped at one end, far away from the vacuum pump main body, of the outer side of the air suction pipe through a mounting mechanism; an air suction cover is installed at the end, away from the air suction pipe, of the branch pipe, an air suction head is installed at the end, away from the branch pipe, of the air suction cover, the installation mechanism comprises an elastic pressing assembly, two sets of rubber pads, a torsion assembly and a closing assembly, and the elastic pressing assembly is used for locking the positions of the air suction cover and the air suction head. The torsion assembly is used for unlocking the air suction cover and the air suction head, and the closing assembly is used for closing the operation end of the torsion assembly. The device is simple in structure and convenient to operate, an adsorption part can be repaired, maintained, replaced and updated quickly by a worker through pressing and twisting operation, the labor amount of the worker is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blister machines, in particular to a vacuum adsorption mechanism of a blister machine. Background Art

[0002] Blister machine is also called thermoplastic forming machine, which is a machine that absorbs heated plasticized PVC, PE, PP, PET, HIPS and other thermoplastic plastic coils into various shapes of high-end packaging boxes, frames and other products. It uses the vacuum suction generated by the vacuum pump to absorb the heated and softened PVC, PET and other thermoplastic plastic sheets into various shapes of vacuum covers, blister trays, bubble shells, etc. through the mold. The vacuum system consists of a vacuum pump, valves, pipelines, etc. A separate vacuum pump is often used in vacuum forming. The vacuum degree of this pump should reach 0.07~0.09Mpa (5 20mmHg) or above, the meaning of vacuum adsorption is to connect the vacuum pump exhaust port to the object to be adsorbed through the suction cup, tube and other components. At this time, the suction cup is similar to a closed container. The suction cup is vacuumed, causing the internal air pressure to change from normal pressure to negative pressure. The pressure difference between the external atmospheric pressure and the negative pressure is used to achieve the purpose of adsorbing the object. Vacuum adsorption is an important link before the finished product of the blister machine. However, the vacuum adsorption mechanism of the existing blister machine has uneven adsorption, resulting in a decrease in the quality of the finished product: Therefore, it does not meet the existing needs. For this reason, we propose a vacuum adsorption mechanism for a blister machine.

[0003] In order to solve the above technical problems, the Chinese patent with announcement number CN213198746U in the prior art discloses a vacuum adsorption mechanism of a blister machine, wherein an air suction port is provided at the upper end of the vacuum pump mechanism, a fixed flange is provided at the upper end of the air suction port, and the fixed flange is fixedly connected to the air suction port, a connecting flange is provided at the upper end of the fixed flange, bolts are provided on both sides of the connecting flange, and the connecting flange is threadedly connected to the fixed flange through bolts, and an air suction pipe is provided at the upper end of the connecting flange.

[0004] Although the above-mentioned existing technical solution can be more uniform during adsorption, its adsorption components and suction pipes are assembled using flanges with multiple sets of bolts. When the adsorption components need to be inspected, maintained or replaced, the staff are required to rotate each set of bolts one by one to perform disassembly and assembly operations, which is cumbersome and time-consuming, thereby affecting work efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum adsorption mechanism for a blister machine to solve the problem proposed in the above background technology that its adsorption components and suction pipes are assembled by using flanges and multiple groups of bolts. When the adsorption components need to be inspected, maintained or replaced, the staff are required to circle each group of bolts one by one to perform disassembly and assembly operations, which is cumbersome and time-consuming, thereby affecting work efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A vacuum adsorption mechanism of a blister molding machine includes a vacuum pump main body, an air suction pipe is installed at the air suction end of the vacuum pump main body, a branch pipe is clamped on the outer end of the air suction pipe away from the vacuum pump main body through a mounting mechanism, an air suction hood is installed on the end of the branch pipe away from the air suction pipe, and an air suction head is installed on the end of the air suction hood away from the branch pipe, the mounting mechanism includes a spring-pressing component, two sets of rubber pads, a torsion component and a closing component, the spring-pressing component is used to lock the position of the air suction hood and the air suction head, the torsion component is used to release the lock on the air suction hood and the air suction head, and the closing component is used to close the operating end of the torsion component.

[0008] As a preferred solution of the present invention, the spring-pressing assembly includes a mounting seat sleeved on one end of the outer wall of the intake pipe, a fixing seat sleeved on the bottom end of the outer wall of the branch pipe, and two groups of rubber pads are respectively embedded and installed on the opposite surfaces of the fixing seat and the mounting seat, and docking holes are provided inside the two groups of rubber pads, and a clamping block is installed on one side of the fixing seat at the docking hole, the outer wall of the clamping block fits the inner wall of the docking hole, and a clamping groove is provided on the outer wall of the mounting seat corresponding to the docking hole, the clamping block and the clamping groove are slidably connected, and a locking groove is provided on one side of the clamping groove inside the mounting seat, a rotating rod is rotatably connected to the inner side of the locking groove, and a spring-pressing block is sleeved on the outer side of the rotating rod.

[0009] As a preferred solution of the present invention, a connecting groove is provided on one side of the spring block, a fixing plate is installed on one side of the inner wall of the locking groove, a connecting spring is installed between the inner wall of the connecting groove and the fixing plate, and the fitting surfaces of the clamping block and the spring block are both provided with a first slope surface that fits into each other.

[0010] As a preferred solution of the present invention, a retraction groove is provided inside the spring block at its first slope surface, an abutment rod is rotatably connected to the inner side of the retraction groove, an abutment plate is sleeved on the outer side of the abutment rod, a reset torsion spring is installed between the abutment rod and the inner wall of the retraction groove, an abutment groove is provided inside the clamping block at its first slope surface, and a second slope surface corresponding to the first slope surface is provided on one side of the abutment plate.

[0011] As a preferred solution of the present invention, the torsion assembly includes a limit groove opened on one side of the inner wall of the locking groove, and the end of the spring block away from the first slope is equipped with a limit plate slidably connected to the limit groove, and an extension groove is opened inside the mounting seat on one side of the locking groove, and a knob is installed on the end of the rotating rod extending to the inner side of the extension groove.

[0012] As a preferred solution of the present invention, the closing component includes a sliding groove opened on the outer wall of the mounting seat, the inner side of the sliding groove is connected to the inner side of the extension groove, and the inner side of the sliding groove is slidably connected with a sliding plate, the length of the sliding plate is smaller than the length of the sliding groove, and the length of the sliding groove is larger than the length of the extension groove.

[0013] As a preferred solution of the present invention, a magnetic block is embedded in one end of the sliding plate, an iron block adsorbed by the magnetic block is embedded in one side of the inner wall of the sliding groove, a buckle groove is provided on one side of the sliding plate, synchronization grooves are provided on both sides of the inner wall of the sliding groove, and synchronization blocks slidably connected to the synchronization grooves are installed on both sides of the sliding plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the utility model, the position of the suction hood and the suction head is locked by the spring-pressing component, the locking of the suction hood and the suction head is released by the twisting component, and the operating end of the twisting component is closed by the closing component. The structure is simple and the operation is convenient. The staff can quickly complete the inspection, maintenance and replacement of the adsorption components by pressing and twisting, which reduces the workload of the staff and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the fixing seat and the mounting seat of the utility model;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the installation mechanism of the utility model.

[0019] In the figure: 1. Vacuum pump body; 2. Suction pipe; 3. Branch pipe; 4. Suction hood; 5. Block; 6. Rotating rod; 7. Spring block; 8. Fixed plate; 9. Connecting spring; 10. First slope; 11. Abutment plate; 12. Reset torsion spring; 13. Second slope; 14. Limiting plate; 15. Knob; 16. Fixed seat; 17. Mounting seat; 18. Rubber pad; 19. Sliding plate; 20. Magnetic block; 21. Synchronous groove; 22. Suction head. DETAILED DESCRIPTION

[0020] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] The suction hood 4 and the suction head 22 are connected to each other by the spring assembly, and the spring assembly is used to lock the position of the suction hood 4 and the suction head 22, and the twisting assembly is used to release the locking of the suction hood 4 and the suction head 22, and the closing assembly is used to close the operating end of the twisting assembly. The device can lock the position of the suction hood 4 and the suction head 22 through the spring assembly, and the twisting assembly releases the locking of the suction hood 4 and the suction head 22, and the closing assembly closes the operating end of the twisting assembly. The device has a simple structure and is easy to operate. The staff can quickly complete the inspection, maintenance and replacement of the adsorption components by pressing and twisting, which reduces the labor of the staff and improves the work efficiency.

[0024] In this embodiment, if Figure 1 、 Figure 2 and Figure 3 As shown, the spring-pressing assembly includes a mounting seat 17 sleeved on one end of the outer wall of the suction pipe 2, and a fixing seat 16 is sleeved on the bottom end of the outer wall of the branch pipe 3. Two sets of rubber pads 18 are respectively embedded and installed on the opposite surfaces of the fixing seat 16 and the mounting seat 17. The interiors of the two sets of rubber pads 18 are provided with docking holes, and a card block 5 is installed on one side of the fixing seat 16 at the docking hole. The outer wall of the card block 5 fits into the inner wall of the docking hole, and a card groove is provided at the outer wall of the mounting seat 17 corresponding to the docking hole. The card block 5 is slidably connected to the card groove, and a locking groove is provided on one side of the card groove inside the mounting seat 17. The inner side of the locking groove is rotatably connected with a rotating rod 6, and the outer side of the rotating rod 6 is sleeved with a spring-pressing block 7. First, fit the fixing seat 16 with the two sets of rubber pads 18 on the mounting seat 17 so that the port of the branch pipe 3 is aligned with the port of the suction pipe 2, and the card block 5 is pushed into the docking hole and enters the inner side of the card groove.

[0025] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, a connecting groove is provided on one side of the elastic block 7, a fixing plate 8 is installed on one side of the inner wall of the locking groove, a connecting spring 9 is installed between the inner wall of the connecting groove and the fixing plate 8, the fitting surfaces of the clamping block 5 and the elastic block 7 are provided with a first slope 10 that fits each other, the inside of the elastic block 7 is provided with a retraction groove at its first slope 10, the inside of the retraction groove is rotatably connected with an abutment rod, an abutment plate 11 is sleeved on the outside of the abutment rod, and a reset torsion spring 12 is installed between the abutment rod and the inner wall of the retraction groove, the inside of the clamping block 5 is provided with an abutment groove at its first slope 10, and a second slope 13 that fits correspondingly with the first slope 10 is provided on one side of the abutment plate 11, and then, the fixing seat 16 is fixed. Continue to squeeze, as the two sets of rubber pads 18 retract, the card block 5 enters the inner side of the locking groove and contacts the spring block 7, and the first slopes 10 of the two squeeze each other, forcing the spring block 7 to rotate around the rotating rod 6, and the connecting spring 9 is stretched accordingly. After the card block 5 contacts the abutment plate 11, the first slope 10 and the second slope 13 fit together and squeeze each other, forcing the abutment rod to drive the reset torsion spring 12 to retract, allowing the abutment plate 11 to completely retract to the inside of the retraction groove, until the abutment groove is close to the retraction groove, and the abutment plate 11 is popped out to the inside of the abutment groove by the reset torsion spring 12. At this time, the fixing seat 16 is released, and the rubber pad 18 rebounds to drive the card block 5 to move back and fix the abutment plate 11 to the inner wall of the abutment groove.

[0026] In this embodiment, if Figure 1 、 Figure 2 and Figure 3 As shown, the torsion assembly includes a limit groove provided on one side of the inner wall of the locking groove, and the end of the spring block 7 away from the first slope 10 is equipped with a limit plate 14 slidably connected to the limit groove, and an extension groove is provided on one side of the locking groove inside the mounting seat 17, and the rotating rod 6 extends to the end inside the extension groove and is equipped with a knob 15. Furthermore, when maintenance or replacement of new parts is required, the first knob 15 can be twisted to drive the rotating rod 6 to rotate accordingly, actively driving the spring block 7 to rotate, and the abutment plate 11 is dragged away from the inner wall of the abutment groove. At this time, the second rubber pad 18 is completely reset and rebounded, and the block 5 continues to move. After the abutment groove and the retraction groove are misaligned, the abutment plate 11 will no longer be stuck in the inner side of the abutment groove, and the fixed seat 16 and the branch pipe 3 can be pulled upward to remove the suction hood 4 and the suction head 22 for maintenance or replacement.

[0027] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, the closing component includes a sliding groove opened on the outer wall of the mounting seat 17, the inner side of the sliding groove is connected to the inner side of the extension groove, and a sliding plate 19 is slidably connected to the inner side of the sliding groove. The length of the sliding plate 19 is smaller than the length of the sliding groove, and the length of the sliding groove is larger than the length of the extension groove. A magnetic block 20 is embedded and installed at one end of the sliding plate 19, and an iron block adsorbed by the magnetic block 20 is embedded and installed on one side of the inner wall of the sliding groove. A buckle groove is opened on one side of the sliding plate 19, and a synchronization groove 21 is opened on both sides of the inner wall of the sliding groove. The sides are both equipped with synchronization blocks that are slidably connected to the synchronization groove 21. Furthermore, after the assembly is completed, the sliding plate 19 can be driven to slide on the inside of the sliding groove by buckling the buckling groove, and the synchronization block can then slide on the inside of the synchronization groove 21 to limit the position of the sliding plate 19. The magnetic block 20 on the sliding plate 19 is fitted onto the inner wall of the sliding groove so that the magnetic block 20 can be adsorbed with the iron block to position the sliding plate 19, so that the sliding plate 19 can cover the knob 15 on the inside of the extension groove to avoid the parts at the connection from loosening due to accidental touching of the knob 15 by personnel after assembly.

[0028] The implementation principle of the vacuum adsorption mechanism of the blister machine of the embodiment of the present application is as follows: fit the two sets of rubber pads 18 on the fixing seat 16 and the mounting seat 17 so that the end of the branch pipe 3 is aligned with the end of the suction pipe 2, and push the card block 5 into the docking hole and enter the inner side of the card slot, and continue to squeeze the fixing seat 16. As the two sets of rubber pads 18 retract, the card block 5 enters the inner side of the locking slot and contacts the spring block 7. The first slopes 10 of the two squeeze each other, forcing the spring block 7 to go around The rotating rod 6 rotates, and the connecting spring 9 is stretched accordingly. After the card block 5 contacts the abutment plate 11, the first slope 10 and the second slope 13 are pressed against each other, forcing the abutment rod to drive the reset torsion spring 12 to retract, so that the abutment plate 11 is completely retracted to the inside of the retraction groove. Until the abutment groove is close to the retraction groove, the abutment plate 11 is ejected to the inside of the abutment groove by the reset torsion spring 12. At this time, the fixing seat 16 is released, and the rubber pad 18 rebounds and drives the card block 5 to move back the abutment plate 11 and abut against the inner wall of the abutment groove. When the second rubber pad 18 is fully reset and rebounds, the block 5 continues to move. After the abutment groove and the retraction groove are misaligned, the abutment plate 11 will no longer be stuck in the abutment groove, and the fixing seat 16 and the branch pipe 3 are pulled upwards, and the suction cover 4 and the suction head 22 can be removed for maintenance or replacement. After the assembly is completed, the buckling groove can be buckled to drive the sliding plate 19 to slide inside the sliding groove, and the synchronous block can slide inside the synchronous groove 21, limiting the position of the sliding plate 19, and the magnetic block 20 on the sliding plate 19 is attached to the inner wall of the sliding groove, so that the magnetic block 20 can be adsorbed with the iron block to position the sliding plate 19, so that the sliding plate 19 can cover the knob 15 inside the extension groove, avoiding the loosening of the parts at the connection caused by the accidental touch of the knob 15 after assembly.

[0029] The control method of the present invention is to control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. Moreover, the present invention is used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum adsorption mechanism of a blister machine, comprising a vacuum pump body (1), characterized in that: The suction end of the vacuum pump body (1) is equipped with a suction pipe (2), and the outer end of the suction pipe (2) away from the vacuum pump body (1) is connected to a branch pipe (3) through a mounting mechanism. The end of the branch pipe (3) away from the suction pipe (2) is equipped with a suction hood (4), and the end of the suction hood (4) away from the branch pipe (3) is equipped with a suction head (22). The mounting mechanism includes a spring-pressing component, two groups of rubber pads (18), a twisting component and a closing component. The spring-pressing component is used to lock the positions of the suction hood (4) and the suction head (22), the twisting component is used to release the lock of the suction hood (4) and the suction head (22), and the closing component is used to close the operating end of the twisting component.

2. The vacuum adsorption mechanism of the blister machine according to claim 1, characterized in that: The spring-pressing assembly comprises a mounting seat (17) sleeved on one end of the outer wall of the suction pipe (2), a fixing seat (16) sleeved on the bottom end of the outer wall of the branch pipe (3), two groups of rubber pads (18) are respectively embedded and mounted on the opposite surfaces of the fixing seat (16) and the mounting seat (17), and docking holes are provided inside the two groups of rubber pads (18). A card block (5) is installed at one side of the fixing seat (16) at the docking hole, the outer wall of the card block (5) is fitted with the inner wall of the docking hole, and a card slot is provided on the outer wall of the mounting seat (17) corresponding to the docking hole, the card block (5) and the card slot are slidably connected, a locking slot is provided inside the mounting seat (17) at one side of the card slot, a rotating rod (6) is rotatably connected to the inner side of the locking slot, and a spring-pressing block (7) is sleeved on the outer side of the rotating rod (6).

3. The vacuum adsorption mechanism of the blister machine according to claim 2, characterized in that: A connecting groove is provided on one side of the elastic block (7), a fixing plate (8) is installed on one side of the inner wall of the locking groove, a connecting spring (9) is installed between the inner wall of the connecting groove and the fixing plate (8), and the fitting surfaces of the clamping block (5) and the elastic block (7) are both provided with a first slope surface (10) that fits with each other.

4. The vacuum adsorption mechanism of the blister machine according to claim 3, characterized in that: The elastic block (7) is provided with a retraction groove at its first slope surface (10), the inner side of the retraction groove is rotatably connected to an abutting rod, the outer side of the abutting rod is provided with an abutting plate (11), and a reset torsion spring (12) is installed between the abutting rod and the inner wall of the retraction groove. The clamping block (5) is provided with an abutting groove at its first slope surface (10), and one side of the abutting plate (11) is provided with a second slope surface (13) corresponding to the first slope surface (10).

5. The vacuum adsorption mechanism of the blister machine according to claim 4, characterized in that: The torsion assembly includes a limiting groove provided on one side of the inner wall of the locking groove; a limiting plate (14) slidably connected to the limiting groove is installed on one end of the spring block (7) away from the first slope surface (10); an extension groove is provided inside the mounting seat (17) on one side of the locking groove; and a knob (15) is installed on one end of the rotating rod (6) extending to the inner side of the extension groove.

6. The vacuum adsorption mechanism of the blister machine according to claim 5, characterized in that: The closing assembly includes a sliding groove opened on the outer wall of the mounting seat (17), the inner side of the sliding groove is connected to the inner side of the extension groove, the inner side of the sliding groove is slidably connected to a sliding plate (19), the length of the sliding plate (19) is smaller than the length of the sliding groove, and the length of the sliding groove is larger than the length of the extension groove.

7. The vacuum adsorption mechanism of the blister machine according to claim 6, characterized in that: A magnetic block (20) is embedded in one end of the sliding plate (19), an iron block adsorbed by the magnetic block (20) is embedded in one side of the inner wall of the sliding groove, a buckle groove is opened on one side of the sliding plate (19), synchronous grooves (21) are opened on both sides of the inner wall of the sliding groove, and synchronous blocks slidably connected to the synchronous grooves (21) are installed on both sides of the sliding plate (19).

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