Film material traction device for film sealing equipment

Abstract

The utility model discloses a film traction device for film sealing equipment, which belongs to the field of film sealing and comprises a base, a clamping mechanism and a transmission mechanism. The clamping mechanism comprises a fixed part, a movable part, an elastic reset part and an electromagnet; the fixed part is slidably connected relative to the base, the movable part is pivotally connected relative to the fixed part, and a gap for a film material to pass through is reserved between the fixed part and the movable part; clamping plates are fixedly connected to the movable part and the fixed part; the elastic reset piece is connected between the movable piece and the fixed piece and used for providing elastic force enabling the two clamping plates to be close to each other and make contact with each other. The electromagnet is fixedly connected to the fixed part and used for providing thrust capable of overcoming the elastic force for the movable part after being powered on so that the two clamping plates can be far away from each other. The transmission mechanism is fixedly connected relative to the base, and the output end of the transmission mechanism is fixedly connected with the fixing piece. According to the utility model, the film material cannot be torn, and the problem of deflection of the film material cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of film sealing, in particular to a film material traction device for a film sealing device. Background Art

[0002] A film sealing device is a device used to connect a film to the surface of a product to be film-sealed by means of hot pressing, so as to seal the surface of the product to be film-sealed with the film.

[0003] In the prior art, a film sealing device mainly uses two rollers for feeding and winding. However, this feeding and winding method has certain disadvantages: since the winding roller is used for winding, and it is also necessary to ensure that the film material does not break during winding, the width dimension of the film must be greater than the actual use width, resulting in the need to reserve an additional sufficient margin for the width of the film, thus causing waste of film usage.

[0004] To solve this problem, some film sealing devices have improved the winding method. For example, the Chinese invention patent with the publication number CN116331580A is configured with a film traction assembly that runs along the advancing direction of the film material, including an L-shaped jaw and a traction transverse movement driving mechanism for driving the L-shaped jaw to move. In this way, by means of the reciprocating movement of the L-shaped jaw, the film material is continuously pulled out for subsequent heat sealing and cutting operations. However, the film traction assembly of this patent also has disadvantages: when the L-shaped jaw clamps the film, due to the small force-bearing area, the film is easily torn. In addition, the forces on each part in the width direction of the film are uneven, easily causing the film to skew during traction. Summary of the Invention

[0005] Aiming at the problems that the film material traction assembly in the prior art is prone to tearing the film material and skewing during traction, the purpose of the utility model is to provide a film material traction device for a film sealing device, so as to at least partially solve the above problems.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A film material traction device for a film sealing device, comprising a base, a clamping mechanism, and a transmission mechanism;

[0008] The clamping mechanism includes a fixed member, a movable member, an elastic reset member, and an electromagnet; the fixed member is slidably connected to the base, the movable member is pivotally connected to the fixed member, and a gap for the film material to pass through is reserved between the fixed member and the movable member; clamping plates are fixedly connected to both the movable member and the fixed member; the elastic reset member is connected between the movable member and the fixed member, and the elastic reset member is used to provide an elastic force that causes the two clamping plates to approach and contact each other; the electromagnet is fixedly connected to the fixed member, and the electromagnet is used to provide a thrust force that can overcome the elastic force to the movable member after being energized, so that the two clamping plates move away from each other.

[0009] The transmission mechanism is fixedly connected to the base, and the output end of the transmission mechanism is fixedly connected to the fixed member.

[0010] In some preferred embodiments, a pressing groove is formed on one of the clamping plates, and a pressing rib adapted to the pressing groove is correspondingly provided on the other clamping plate.

[0011] In some preferred embodiments, the elastic reset member is a helical compression spring, spring seats are fixedly provided on both the fixed member and the movable member, and support columns adapted to the helical compression spring are provided on the spring seats.

[0012] In some preferred embodiments, the transmission mechanism includes a transmission motor and a transmission lead screw. The transmission motor is fixed on the base, the transmission lead screw is rotatably connected to the base, one end of the transmission lead screw is mechanically connected to the motor shaft of the transmission motor, a matching nut is screwed on the transmission lead screw, the nut is slidably connected to the base, and the fixed member is fixedly connected to the nut.

[0013] In some preferred embodiments, a slide rail is fixedly connected to the fixed member, the slide rail is fixedly connected to the nut, and a slider adapted to the slide rail is fixedly connected to the base.

[0014] In some preferred embodiments, the movable member includes a long strip-shaped body portion, and arm portions are provided at both ends in the length direction of the body portion. The two arm portions are respectively pivotally connected to both sides of the fixed member through pivot shafts.

[0015] In some preferred embodiments, two elastic reset members and two electromagnets are provided. The two elastic reset members and the two electromagnets are respectively arranged at both ends in the length direction of the movable member.

[0016] In some preferred embodiments, a bracket for installing the electromagnet is connected to the fixed member, and a drag chain is provided between the bracket and the base.

[0017] With the above technical solution, the beneficial effects of the present utility model are as follows: When the clamping mechanism of the present utility model clamps and pulls the film material, since the two clamping plates can be opened and closed under the action of the elastic reset member and the electromagnet, and then release or clamp the film material, and due to the shape of the plate-like structure, the film material will neither be torn nor skewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present utility model.

[0019] Figure 2 It is a front view of the present utility model.

[0020] Figure 3 It is a structural schematic diagram of the clamping mechanism in the present utility model.

[0021] Figure 4 It is another structural schematic diagram of the clamping mechanism in the present utility model.

[0022] Figure 5 It is a front view of the clamping mechanism in the present utility model.

[0023] Figure 6 It is a top view of the clamping mechanism in the present utility model.

[0024] In the figure: 1 - base, 2 - clamping mechanism, 21 - fixing member, 22 - movable member, 23 - elastic reset member, 24 - electromagnet, 25 - spring seat, 26 - bracket, 27 - drag chain, 3 - transmission mechanism, 31 - transmission motor, 32 - transmission lead screw, 33 - nut, 4 - slide rail, 5 - slider, 6 - lower clamping plate, 7 - upper clamping plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the specific embodiments of the present utility model in conjunction with the drawings. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is the description of the structure of the present utility model based on the drawings shown, and is only for the convenience of describing the present utility model simply, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0027] For the "first" and "second" in this technical solution, they are only terms used to distinguish corresponding structures with the same or similar structures or similar functions, and do not represent the arrangement of the importance of these structures, nor do they have the meaning of sorting, comparing sizes, or other meanings.

[0028] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two structures. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the general idea of this utility model and in connection with the specific context of this solution.

[0029] Embodiment

[0030] A film material traction device for a film sealing device, as Figures 1-6 shown, includes a base 1, a clamping mechanism 2, and a transmission mechanism 3.

[0031] The base 1 has a plate-like structure and is usually arranged horizontally. The clamping mechanism 2 includes a fixed member 21, a movable member 22, an elastic reset member 23, and an electromagnet 24.

[0032] The fixed member 21 is slidably connected to the base 1 and slides linearly. For example, the fixed member 21 is fixedly connected to the slide rail 4 by screws, and a slider 5 matching the slide rail 4 is fixedly connected to one side of the top surface of the base 1, so that the fixed member 21 can slide relative to the base 1 through the slide rail 4 and the slider 5.

[0033] The movable member 22 is pivotally connected to the fixed member 21. The movable member 22 includes a long strip-shaped body portion. A gap for the film material to pass through is reserved between the body portion of the movable member 22 and the fixed member 21. The body portion is arranged horizontally and perpendicular to the sliding direction of the fixed member 21. Arms are provided at both ends in the length direction of the body portion, for example, integrally formed. The fixed member 21 is located between the two arms, and both arms are pivotally connected to the fixed member 21 through pivot shafts. For example, the pivot shaft is configured as a screw, and the screw is screwed into a threaded hole opened on the side surface of the fixed member 21. A screw through hole is opened on the arm of the movable member 22, and the part of the screw exposed from the threaded hole is configured as a smooth arm to prevent the thread from affecting the pivoting of the movable member 22. In addition, the screw can also prevent the movable member 22 from falling off.

[0034] Clamping plates are fixedly connected to both the movable member 22 and the fixed member 21. Specifically, a lower clamping plate 6 is connected to the fixed member 21, and an upper clamping plate 7 is connected to the movable member 22 (the main body part thereof). The lower clamping plate 6 is arranged horizontally, and the inclination angle of the upper clamping plate 7 changes as the movable member 22 pivots. At a certain rotation angle of the movable member 22, the upper clamping plate 7 will be approximately parallel to the lower clamping plate 6. At this time, there is also a gap for the film material to pass between the upper clamping plate 7 and the lower clamping plate 6. When the movable member 22 pivots relative to the fixed member 21, the gap between the free end of the upper clamping plate 7 and the lower clamping plate 6 will change, thereby clamping or releasing the film material.

[0035] Wherein, a pressing groove is formed on one side of the top surface of the lower clamping plate 6, and a pressing rib adapted to the pressing groove is correspondingly provided at the free end of the upper clamping plate 6, so as to clamp the film material through the cooperation of the pressing groove and the pressing rib. Of course, the pressing rib can also be arranged on the top surface of the lower clamping plate 6, and the pressing groove can be arranged at the free end of the upper clamping plate 7.

[0036] An elastic reset member 23 is connected between the movable member 22 and the fixed member 21. The elastic reset member 23 is used to provide an elastic force that makes the upper clamping plate 7 and the lower clamping plate 6 approach and contact each other. That is, the free end of the upper clamping plate 7 approaches and contacts the lower clamping plate 6. The elastic reset member 23 is configured as a helical compression spring. Spring seats 25 are fixedly provided on both the fixed member 21 and the movable member 22. They are in a sheet-like structure, and support columns adapted to the helical compression spring are provided on the spring seats 25. Through the arrangement of the support columns and the spring seats 25, the helical compression spring can be more stably connected between the fixed member 21 and the movable member 22. When the movable member 22 pivots (driving the upper clamping plate 7 away from the lower clamping plate 6), the helical compression spring is further compressed.

[0037] The electromagnet 24 is fixedly connected relative to the fixed member 21. A bracket 26 is fixedly connected to the fixed member 21, and the electromagnet 24 is fixedly connected to the bracket 26. And a drag chain 27 is provided between the bracket 26 and the base 1 to facilitate supporting the cable for supplying power to the electromagnet 24. The electromagnet 24 is used to provide a thrust to the movable member 22 that can overcome the elastic force of the elastic reset member 23 after being energized, so that the upper clamping plate 7 is away from the lower clamping plate 6.

[0038] It is easy to understand that two elastic reset members 23 and two electromagnets 24 are provided. The two elastic reset members 23 and the two electromagnets 24 are respectively arranged at both ends of the movable member 22 in the length direction, so that the pivoting movement of the movable member 22 is more stable.

[0039] The transmission mechanism 3 is fixedly connected relative to the base 1, and the output end of the transmission mechanism 3 is fixedly connected to the fixed member 21 in the clamping mechanism 2.

[0040] In this embodiment, the transmission mechanism 3 includes a transmission motor 31, a transmission lead screw 32, and a nut 33. The transmission motor 31 is fixed to one side of the top surface of the base 1. Bearings are installed at both ends of the transmission lead screw 32, and two corresponding bearing seats are provided on the base 1 to facilitate the installation of the transmission lead screw 32. One end of the transmission lead screw 32 is mechanically connected to the motor shaft of the transmission motor 31, for example, through a coupling. A nut 33 that is used in a matching manner is also screwed onto the transmission lead screw 32, and the nut 33 is fixedly connected to the above-mentioned slide rail 5 by screws.

[0041] The working process of the film material traction device for the film sealing equipment provided by the present utility model is as follows:

[0042] During use, this device is used as a part of the film sealing equipment. The film material is released from the unwinding roller. The clamping mechanism 2 approaches the break of the film material driven by the transmission mechanism 3. When approaching, the electromagnet 24 is energized, causing the upper clamping plate 6 and the lower clamping plate 6 to separate from each other, so that the break of the film material extends between the upper clamping plate 6 and the lower clamping plate 6. Then the transmission mechanism 3 stops, the electromagnet 24 is de-energized, and under the action of the elastic resetting member 23, the upper clamping plate 6 and the lower clamping plate 6 approach each other to clamp the film material. Then the transmission mechanism 3 moves in the reverse direction, driving the clamping mechanism 2 to traction the film material to a specified position, such as the film hot pressing station. Then the transmission mechanism 3 stops, and the clamping mechanism 2 releases the film material, thus completing the traction operation of the film material. After the film material is cut and heat-sealed, the traction device repeats the above steps to traction the cut film material to the hot pressing station again.

[0043] The above has described the embodiments of the present utility model in detail in conjunction with the drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A film material pulling device for film sealing equipment, characterized in that: It includes a base, a clamping mechanism and a transmission mechanism; The clamping mechanism comprises a fixed part, a movable part, an elastic reset part and an electromagnet; the fixed part is slidably connected relative to the base, the movable part is pivotally connected relative to the fixed part, and a gap is reserved between the fixed part and the movable part for film material to pass through; clamping plates are fixedly connected to the movable part and the fixed part; the elastic reset part is connected between the movable part and the fixed part, and the elastic reset part is used to provide an elastic force that makes the two clamping plates approach and contact each other; the electromagnet is fixedly connected to the fixed part, and the electromagnet is used to provide a thrust to the movable part that can overcome the elastic force after power is turned on, so as to make the two clamping plates move away from each other; The transmission mechanism is fixedly connected to the base, and the output end of the transmission mechanism is fixedly connected to the fixing member.

2. The film material pulling device for film sealing equipment according to claim 1, characterized in that: One of the clamping plates is provided with a pressing groove, and the other clamping plate is correspondingly provided with a pressing corrugation matched with the pressing groove.

3. The film material pulling device for film sealing equipment according to claim 1, characterized in that: The elastic reset member is a helical compression spring. A spring seat is fixed on both the fixed member and the movable member. A support column matched with the helical compression spring is provided on the spring seat.

4. The film material pulling device for film sealing equipment according to claim 1, characterized in that: The transmission mechanism includes a transmission motor and a transmission screw, the transmission motor is fixed on the base, the transmission screw is rotatably connected to the base, one end of the transmission screw is mechanically connected to the motor shaft of the transmission motor, and a matching nut is screwed on the transmission screw, the nut is slidably connected relative to the base, and the fixing piece is fixedly connected relative to the nut.

5. The film material pulling device for film sealing equipment according to claim 4, characterized in that: The fixing member is fixedly connected with a slide rail, the slide rail is fixedly connected with the nut, and the base is fixedly connected with a sliding block matched with the slide rail.

6. The film material pulling device for film sealing equipment according to claim 1, characterized in that: The movable part comprises a long strip-shaped main body, and arms are arranged at both ends of the main body in the length direction. The two arms are pivotally connected to the two sides of the fixed part through pivots respectively.

7. The film material pulling device for film sealing equipment according to claim 6, characterized in that: The elastic return member and the electromagnet are both provided with two, and the two elastic return members and the two electromagnets are respectively arranged at two ends of the movable member in the length direction.

8. The film material pulling device for film sealing equipment according to claim 1, characterized in that: The fixing member is connected with a bracket for installing the electromagnet, and a drag chain is arranged between the bracket and the base.

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