Film clamping mechanism for film packaging machine

Abstract

The utility model relates to the related technical field of packaging machines, in particular to a film clamping mechanism for a film packaging machine. The feeding device comprises a first clamping plate, a second clamping plate and a connecting assembly, the first clamping plate and the second clamping plate are oppositely arranged, the connecting assembly enables a feeding channel to be formed between the first clamping plate and the second clamping plate, and the feeding channel can be opened or closed when the first clamping plate and the second clamping plate move relatively. The first clamping plate is arranged above the second clamping plate and made of magnetic materials, a plurality of electromagnetic adsorption parts are installed on the side, facing the first clamping plate, of the second clamping plate, and limiting mechanisms capable of limiting the electromagnetic adsorption parts to enable the electromagnetic adsorption parts to float up and down are arranged between the electromagnetic adsorption parts and the second clamping plate. A driving mechanism capable of driving the second clamping plate to approach the first clamping plate is arranged below the second clamping plate; after the prior art is improved, the adsorption structure is relatively simple, and the assembly is time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a film clamping mechanism for a film packaging machine. Background Art

[0002] When packaging medicines, foods, etc., it is necessary to perform film coating on these packages. During the film coating process, it is necessary to fix the film to prevent the film from moving. The existing clamping devices have the problem of insufficient flexibility, which affects the efficiency of film coating.

[0003] In view of this, a Chinese patent document with the authorization number CN212501190U discloses a film clamping mechanism and a film conveying mechanism for a film packaging machine, including a first mounting seat, a first guide shaft, a second guide shaft, a second mounting seat, a reset elastic member, and a plurality of clamping components. The first guide shaft and the second guide shaft are both vertically arranged on the first mounting seat. One end of the second mounting seat is slidably connected to the first guide shaft, and the other end of the second mounting seat is slidably connected to the second guide shaft. The reset elastic member is arranged between the first mounting seat and the second mounting seat. The clamping components each include an electromagnet and a magnetic material member; the electromagnet and the magnetic material member are separably arranged between the first mounting seat and the second mounting seat; however, the first mounting seat and the second mounting seat need to be respectively installed with the magnetic material member and the electromagnet, and the adsorption structure is relatively complex, and the assembly is time-consuming and laborious.

[0004] Therefore, it is necessary to improve the deficiencies of the above prior art. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a film clamping mechanism for a film packaging machine in view of the deficiencies of the above prior art, and solve the problem that the first mounting seat and the second mounting seat in the prior art need to be respectively installed with the magnetic material member and the electromagnet, and the adsorption structure is relatively complex, and the assembly is time-consuming and laborious.

[0006] To achieve the above object, the utility model provides the following technical solution: A film clamping mechanism for a film packaging machine, including a first clamping plate and a second clamping plate arranged oppositely and a connecting component arranged on the first clamping plate and the second clamping plate. The connecting component forms a feeding channel between the first clamping plate and the second clamping plate. When the first clamping plate and the second clamping plate move relatively, the feeding channel can be opened or closed. The first clamping plate is arranged above the second clamping plate and is made of magnetic material. A plurality of electromagnetic suction attachments are installed on the side of the second clamping plate facing the first clamping plate. A limiting mechanism capable of limiting the electromagnetic suction attachments to float up and down is arranged between the electromagnetic suction attachments and the second clamping plate. A driving mechanism capable of urging the second clamping plate to approach the first clamping plate is arranged below the second clamping plate.

[0007] With the above technical solution, when film clamping is required, the driving mechanism drives the second clamping plate to approach the first clamping plate and makes the electromagnetic adsorption member close to the lower surface of the first clamping plate to close the feeding channel. Then, after controlling the electromagnetic adsorption member to be electrified, the electromagnetic adsorption member adsorbs on the first clamping plate made of magnetic material and clamps the film. After the film packaging machine controls the driving device to drive the film clamping mechanism to a predetermined position, it controls the electromagnetic adsorption member to be powered off. After the electromagnetic adsorption member loses magnetism, it no longer adsorbs on the first clamping plate. Under the action of gravity, the electromagnetic adsorption member disengages from the first clamping plate and falls downward onto the upper surface of the second clamping plate, thereby releasing the clamping of the film. The electromagnetic adsorption member is limited by the limiting mechanism so that it can only float slightly up and down between the first clamping plate and the second clamping plate, avoiding the detachment of the electromagnetic adsorption member and being able to automatically flatten against the lower end surface of the first clamping plate during adsorption. With the above technical solution, the adsorption structure is relatively simple and the assembly is time-saving and labor-saving.

[0008] The further setting of the above technical solution is: the limiting mechanism includes an installation through hole and a movable block provided on the second clamping plate. The movable block is detachably connected to the electromagnetic adsorption member. A gap is formed between the electromagnetic adsorption member and the proximal end of the movable block. The outer edge at the installation through hole of the second clamping plate is located in the gap, and the distance between the gaps is greater than the thickness of the second clamping plate.

[0009] With the above technical solution, during installation, the electromagnetic adsorption member and the movable block are detachably connected through the installation through hole. The second clamping plate is clamped in the middle through the gap between the electromagnetic adsorption member and the movable block to form a buffer gap, thereby realizing the limitation of the electromagnetic adsorption member to prevent it from falling off and the electromagnetic adsorption member can automatically flatten on the first clamping plate during adsorption.

[0010] The further setting of the above technical solution is: the connection assembly includes a guide member provided between the two ends of the first clamping plate and the second clamping plate, a first fastener for firmly connecting the first clamping plate and the guide member, and a second fastener firmly connected to the guide member. A limiting washer is provided between the second fastener and the second clamping plate, and the second clamping plate is slidably connected to the guide member.

[0011] With the above technical solution, the first clamping plate and the guide member are firmly connected together through the first fastener. The second clamping plate is limited by the second fastener and the limiting washer, and the second clamping plate can move up and down along the guide member.

[0012] The further setting of the above technical solution is: an elastic member is sleeved outside the guide member, and one end of the elastic member presses against the first clamping plate and the other end presses against the second clamping plate.

[0013] With the above technical solution, when the second clamping plate moves towards the first clamping plate, the elastic member can slow down the moving speed of the second clamping plate, thereby reducing the collision between the first clamping plate and the second clamping plate; when the second clamping plate separates from the first clamping plate, the elastic member restores its elastic force and drives the second clamping plate away from the first clamping plate.

[0014] The further setting of the above technical solution is: the driving mechanism includes push-pull electromagnets arranged below both ends of the second clamping plate, and the movable end of the push-pull electromagnet can abut against the lower end of the second clamping plate.

[0015] With the above technical solution, when clamping the film is required, the movable end of the push-pull electromagnet extends to abut against the second clamping plate and pushes the second clamping plate to drive the electromagnetic adsorbing member close to the first clamping plate. After the electromagnetic adsorbing member is energized, it will continuously adsorb on the first clamping plate, and then the movable end of the push-pull electromagnet is controlled to retract. During this process, the elastic member is in a compressed state; when the film needs to be released, after the electromagnetic adsorbing member is powered off, it separates from the first clamping plate, and the electromagnetic adsorbing member no longer limits the second clamping plate. The second clamping plate slides and resets along the guiding member under the action of the elastic member.

[0016] The further setting of the above technical solution is: one end of the first clamping plate is provided with a first sliding connecting member, and the other end is provided with a second sliding connecting member. A sliding groove is provided on the first sliding connecting member, and a sliding hole is provided on the second sliding connecting member.

[0017] With the above technical solution, both ends of the first clamping plate are installed on the sliding shaft of the film wrapping machine through the sliding groove of the first sliding connecting member and the sliding hole of the second sliding connecting member, so that the entire film clamping mechanism can reciprocally slide along the sliding shaft of the film wrapping machine, and realize repeated pulling and clamping of the film to achieve packaging.

[0018] The beneficial effects achieved by the present utility model are: the adsorption structure is relatively simple, with fewer components, and the assembly is time-saving and labor-saving. Description of the Drawings

[0019] Figure 1 is a schematic structural view of an embodiment of the present utility model;

[0020] Figure 2 is an exploded structural view of an embodiment of the present utility model;

[0021] Figure 3 is a sectional view of an embodiment of the present utility model;

[0022] Figure 4 When Figure 3 is a partial view at A in the figure. Detailed Description of the Invention

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figures 1-4 shown in [reference], a film clamping mechanism for a film packaging machine includes a first clamping plate 1 and a second clamping plate 2 which are oppositely arranged, and a connecting component 3 arranged on the first clamping plate 1 and the second clamping plate 2. The connecting component 3 forms a feeding channel 4 between the first clamping plate 1 and the second clamping plate 2. When the first clamping plate 1 and the second clamping plate 2 move relatively, the feeding channel 4 can be opened or closed. The first clamping plate 1 is arranged above the second clamping plate 2 and is made of a magnetic material. A plurality of electromagnetic suction parts 5 are installed on the side of the second clamping plate 2 facing the first clamping plate 1. A limiting mechanism 6 is arranged between the electromagnetic suction parts 5 and the second clamping plate 2 to limit the electromagnetic suction parts 5 so that they can float up and down. A driving mechanism 7 is arranged below the second clamping plate 2 to urge the second clamping plate 2 to approach the first clamping plate 1. The first clamping plate 1 can be made of a strong magnetic material such as iron, cobalt, nickel and their alloys. The electromagnetic suction part 5 is an electromagnet, and the first clamping plate 1 is magnetized and adsorbed after the electromagnet is energized to achieve the film clamping effect.

[0025] The limiting mechanism 6 includes an installation through hole 60 arranged on the second clamping plate 2 and a movable block 61. The movable block 61 is detachably connected to the electromagnetic suction part 5 by screws. One end of the movable block 61 is in clearance fit with the second clamping plate 2 through the installation through hole 60. A gap 62 is formed between the electromagnetic suction part 5 and the close end of the movable block 61. The outer edge at the installation through hole 60 of the second clamping plate 2 is located in the gap 62, and the distance of the gap 62 is greater than the thickness of the second clamping plate 2.

[0026] The connecting component 3 includes a guide part 31 arranged between the two ends of the first clamping plate 1 and the second clamping plate 2, a first fastener 32 for firmly connecting the first clamping plate 1 and the guide part 31, and a second fastener 33 for firmly connecting the guide part 31. A limiting washer 34 is arranged between the second fastener 33 and the second clamping plate 2. The second clamping plate 2 is slidably connected to the guide part 31. An elastic part 35 is sleeved outside the guide part 31. One end of the elastic part 35 presses against the first clamping plate 1, and the other end presses against the second clamping plate 2. The elastic part 35 is a spring.

[0027] The driving mechanism 7 includes a push-pull electromagnet 71 arranged below the two ends of the second clamping plate 2. The movable end of the push-pull electromagnet 71 can abut against the lower end of the second clamping plate 2. The push-pull electromagnet 71 can be fixedly installed on the frame of the film packaging machine, or the push-pull electromagnet 71 can also be replaced by a cylinder or a hydraulic cylinder.

[0028] One end of the first clamping plate 1 is provided with a first sliding connecting member 11, and the other end is provided with a second sliding connecting member 12. A sliding groove 110 is provided on the first sliding connecting member 11, and a sliding hole 120 is provided on the second sliding connecting member 12. The two ends of the first clamping plate 1 are installed on the sliding shaft of the film packaging machine through the sliding groove 110 of the first sliding connecting member 11 and the sliding hole 120 of the second sliding connecting member 12, so that the entire film clamping mechanism can reciprocally slide along the sliding shaft of the film packaging machine, and the film can be repeatedly pulled and clamped to achieve packaging.

[0029] In the above embodiment, when it is necessary to clamp the film, the driving mechanism 7 drives the second clamping plate 2 to approach the first clamping plate 1 and makes the electromagnetic adsorbing member 5 close to the lower surface of the first clamping plate 1, that is, the feeding channel 4 is closed. Then, after controlling the electromagnetic adsorbing member 5 to be electrified, the electromagnetic adsorbing member 5 adsorbs on the first clamping plate 1 made of magnetic material and clamps the film. After the film packaging machine controls the driving device to drive the film clamping mechanism to a predetermined position, the electromagnetic adsorbing member 5 is controlled to be powered off. After the electromagnetic adsorbing member 5 loses magnetism, it no longer adsorbs on the first clamping plate 1. Under the action of gravity, the electromagnetic adsorbing member 5 disengages from the first clamping plate 1 and falls downward onto the upper surface of the second clamping plate 2, thereby releasing the clamping of the film. The electromagnetic adsorbing member 5 is limited by the limiting mechanism 6 so that it can only float slightly up and down between the first clamping plate 1 and the second clamping plate 2, avoiding the detachment of the electromagnetic adsorbing member 5 and being able to automatically flatten with the lower end surface of the first clamping plate 1 during adsorption. In the above technical solution, the adsorption structure is relatively simple, and the assembly is time-saving and labor-saving.

Claims

1. A film clamping mechanism for a film packaging machine, comprising a first clamping plate and a second clamping plate which are oppositely arranged, and a connecting component arranged on the first clamping plate and the second clamping plate. The connecting component forms a feeding channel between the first clamping plate and the second clamping plate, and the feeding channel can be opened or closed when the first clamping plate and the second clamping plate move relatively. It is characterized in that: The first clamping plate is arranged above the second clamping plate and made of magnetic material. A plurality of electromagnetic suction members are installed on one side of the second clamping plate facing the first clamping plate. A limiting mechanism is provided between the electromagnetic suction members and the second clamping plate to limit the electromagnetic suction members so that they can float up and down. A driving mechanism is provided below the second clamping plate to urge the second clamping plate to approach the first clamping plate.

2. The film clamping mechanism for a film packaging machine according to claim 1, characterized in that: The limiting mechanism includes an installation through hole and a movable block provided on the second clamping plate. The movable block is detachably connected to the electromagnetic suction member. A gap is formed between the electromagnetic suction member and the approaching end of the movable block. The outer edge at the installation through hole of the second clamping plate is located in the gap. The distance between the gaps is greater than the thickness of the second clamping plate.

3. The film clamping mechanism for a film wrapping machine according to claim 2, characterized in that: The connecting assembly includes a guiding member provided between the two ends of the first clamping plate and the second clamping plate, a first fastener for tightly connecting the first clamping plate and the guiding member, and a second fastener tightly connected to the guiding member. A limiting washer is provided between the second fastener and the second clamping plate. The second clamping plate is slidably connected to the guiding member.

4. The film clamping mechanism for a film packaging machine according to claim 3, characterized in that: An elastic member is sleeved outside the guiding member. One end of the elastic member presses against the first clamping plate, and the other end presses against the second clamping plate.

5. The film clamping mechanism for a film packaging machine according to claim 4, characterized in that: The driving mechanism includes push-pull electromagnets provided below the two ends of the second clamping plate. The movable end of the push-pull electromagnet can abut against the lower end of the second clamping plate.

6. A film clamping mechanism for a film wrapping machine according to any one of claims 1-5, characterized in that: One end of the first clamping plate is provided with a first sliding connecting member, and the other end is provided with a second sliding connecting member. A sliding groove is provided on the first sliding connecting member, and a sliding hole is provided on the second sliding connecting member.

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