Automatic film drawing mechanism

Abstract

The utility model relates to the technical field of film drawing, and discloses an automatic film drawing mechanism which comprises a fixing plate and a clamping assembly, and the fixing plate is provided with an opening extending in the length direction and can reciprocate in the width direction; the clamping assembly comprises a driving part, an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate penetrate through the opening, the lower clamping plate is fixed to the fixing plate, the upper clamping plate is located above the lower clamping plate and connected with an output shaft of the driving part, and the driving part is fixed to the fixing plate and suitable for driving the upper clamping plate to be close to or away from the lower clamping plate so that the film can be pressed or loosened. The automatic film drawing mechanism has the advantages of being simple in structure, small in occupied space and reliable in operation, and meanwhile equipment can be more conveniently overhauled and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of film pulling, in particular to an automatic film pulling mechanism. Background Art

[0002] Plastic bags are essential in our daily lives, often used to hold other items. They are widely used due to their low cost, extremely light weight, large capacity, and easy storage. As thin film containers for containing and protecting products, plastic bags are typically single-layer structures. Currently, the plastic bag manufacturing process requires automatic film pulling. However, the existing film pulling mechanisms are complex and occupy a large amount of space, making them inconvenient to inspect and maintain. Furthermore, the film can easily become loose during the pulling process, affecting normal film pulling. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an automatic film pulling mechanism.

[0004] The present application provides an automatic film pulling mechanism, comprising:

[0005] A fixed plate having an opening extending in the length direction and capable of reciprocating in the width direction;

[0006] The clamping assembly includes a driving member and an upper clamping plate and a lower clamping plate passed through the opening, the lower clamping plate is fixed to the fixed plate, the upper clamping plate is located above the lower clamping plate and is connected to the output shaft of the driving member, the driving member is fixed to the fixed plate, and is suitable for driving the upper clamping plate to approach or move away from the lower clamping plate to achieve compression or loosening of the film.

[0007] In a possible implementation manner, both the lower surface of the upper clamping plate and the upper surface of the lower clamping plate are provided with protrusions for contacting the film.

[0008] In a possible embodiment, it also includes a first slide rail and a first slider, the fixed plate has a first surface and a second surface arranged opposite to each other, the first surface is provided with a first slide rail extending in the height direction of the fixed plate, the first slide rail is slidably connected to the first slider, and the first slider is connected to the upper clamping plate.

[0009] In a possible embodiment, a connecting portion extends upward from one end of the upper clamping plate located on the first surface, a first mounting hole is defined on the connecting portion, and a second mounting hole matching the first mounting hole is defined on the first sliding block.

[0010] In a possible embodiment, a fixing hole is formed at the top of the upper clamping plate at one end of the first surface, and the output shaft of the driving member is connected to a connector that is engaged with the fixing hole.

[0011] In a possible embodiment, a pushing assembly is further included, which includes a rotating rod and a power piece. The rotating rod extends along the width direction of the fixed plate, and a slide seat is slidably connected to the rotating rod. The slide seat is connected to the middle part of the lower end of the fixed plate, and the output shaft of the power piece is connected to one end of the rotating rod.

[0012] In a possible embodiment, the pushing assembly further includes a second slide rail and a second slider, the second slide rail is located on the outside of the rotating rod and extends along the width direction of the fixed plate, the second slider is slidably connected to the second slide rail, and the second slider is connected to the lower end of the fixed plate.

[0013] In a possible implementation manner, a coupling is further included, one end of the coupling is connected to the output shaft of the power member, and the other end of the coupling is connected to the end of the rotating rod.

[0014] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0015] One end of the film is placed on the lower clamping plate, and then the upper clamping plate is driven by a driving member to approach the lower clamping plate. The upper and lower clamping plates cooperate to clamp the film, and then the fixed plate is driven to move along its width direction, thereby automatically pulling the film out. Manual film pulling is no longer required, reducing labor intensity and helping to improve production efficiency. This automatic film pulling mechanism has the advantages of simple structure, small space occupation and reliable operation, and it also makes it easier to inspect and maintain the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a top view schematic diagram of an automatic film pulling mechanism of the utility model;

[0017] Figure 2 This is a front view schematic diagram of an automatic film pulling mechanism of the utility model;

[0018] Figure 3 This is a structural schematic diagram of an automatic film-pulling mechanism of the utility model from another perspective;

[0019] Figure 4 The utility model is a structural schematic diagram of a clamping component in an automatic film-pulling mechanism.

[0020] Figure Number:

[0021] 10. Fixed plate; 20. Clamping assembly; 21. Driving member; 22. Upper clamping plate; 23. Lower clamping plate; 30. Pushing assembly; 31. Power member; 32. Rotating rod; 33. Second slide rail; 34. Second slider; 35. Coupling; 40. Slide seat; 50. Connector; 60. First slide rail; 70. First slider. DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0023] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0025] like Figures 1 to 4As shown, an embodiment of the utility model provides an automatic film pulling mechanism, including a fixed plate 10 and a clamping assembly 20. The fixed plate 10 is provided with an opening extending in the length direction and can move back and forth in the width direction; the clamping assembly 20 includes a driving member 21 and an upper clamping plate 22 and a lower clamping plate 23 passed through the opening. The lower clamping plate 23 is fixed to the fixed plate 10, and the upper clamping plate 22 is located above the lower clamping plate 23 and is connected to the output shaft of the driving member 21. The driving member 21 is fixed on the fixed plate 10 and is suitable for driving the upper clamping plate 22 to approach or move away from the lower clamping plate 23 to achieve compression or loosening of the film.

[0026] For example, the driving member 21 may be a pneumatic cylinder, with the piston rod of the cylinder extending and retracting to drive the upper clamping plate 22 toward or away from the lower clamping plate 23, thereby achieving the film clamping by the cooperation between the upper clamping plate 22 and the lower clamping plate 23. It should be noted that the use of a pneumatic cylinder as the driving member 21 is merely an example and is not limited thereto. Other power components capable of driving the upper clamping plate 22 to move may also be used.

[0027] The automatic film-pulling mechanism based on the above technical features places one end of the film on the lower clamping plate 23, then uses the driving member 21 to drive the upper clamping plate 22 close to the lower clamping plate 23, and clamps the film under the mutual cooperation of the upper clamping plate 22 and the lower clamping plate 23, and then drives the fixed plate 10 to move along its width direction, thereby automatically pulling out the film, eliminating the need for manual film pulling, reducing labor intensity, and helping to improve production efficiency. The automatic film-pulling mechanism has the advantages of simple structure, small space occupation, and reliable operation, and can also make it easier to inspect and maintain the equipment.

[0028] In one possible embodiment, the lower surface of the upper clamping plate 22 and the upper surface of the lower clamping plate 23 are both provided with protrusions for contacting the film. Thus, when the upper and lower clamping plates 22 and 23 press the film, the protrusions on the upper and lower clamping plates 22 and 23 come into contact with the film, thereby increasing contact friction and preventing the film from loosening during the film drawing process, which would affect normal film drawing.

[0029] In one possible embodiment, the fixing plate 10 further includes a first slide rail 60 and a first slider 70. The fixing plate 10 has a first surface and a second surface disposed opposite each other. The first surface is provided with the first slide rail 60 extending in the height direction of the fixing plate 10. The first slider 70 is slidably connected to the first slide rail 60. The first slider 70 is connected to the upper clamping plate 22. This ensures that when the driving member 21 drives the upper clamping plate 22 toward or away from the lower clamping plate 23, it can be more stable without shaking, which is conducive to ensuring the quality of film drawing.

[0030] In one possible embodiment, a connecting portion extends upward from one end of the upper clamping plate 22 located on the first surface, and a first mounting hole is defined in the connecting portion. A second mounting hole that matches the first mounting hole is defined in the first slider 70. Thus, after the connecting portion of the upper clamping plate 22 is connected to the first slider 70, the first mounting hole and the second mounting hole are aligned, and then fasteners (e.g., bolts) are sequentially inserted through the first mounting hole and the second mounting hole to achieve a detachable connection between the first slider 70 and the connecting portion.

[0031] In one possible embodiment, a fixing hole is defined at the top of one end of the upper clamping plate 22 located on the first surface, and a connector 50 that engages with the fixing hole is connected to the output shaft of the driving member 21. It should be noted that the connector 50 and the fixing hole can be connected using a threaded connection, i.e., an internal thread is defined on the wall of the fixing hole, and an external thread is defined on the end of the connector 50 that extends into the fixing hole. This allows for a detachable connection between the connector 50 and the upper clamping plate 22 using both internal and external threads, resulting in a simple structure and easy assembly and disassembly.

[0032] In one possible embodiment, a pushing assembly 30 is further included. The pushing assembly 30 includes a rotating rod 32 and a power member 31. The rotating rod 32 extends along the width direction of the fixed plate 10. A slide 40 is slidably connected to the rotating rod 32. The slide 40 is connected to the middle portion of the lower end of the fixed plate 10. The output shaft of the power member 31 is connected to one end of the rotating rod 32. In other words, when the power member 31 drives the rotating rod 32 to rotate, the slide 40 is driven to slide on the rotating rod 32. Since the slide 40 is connected to the middle portion of the lower end of the fixed plate 10, the fixed plate 10 is driven to move. At this time, the film clamped by the upper clamping plate 22 and the lower clamping plate 23 is pulled, thereby realizing an automatic film pulling operation, eliminating the need for manual film pulling, which is beneficial to improving work efficiency.

[0033] In one possible embodiment, the pushing assembly 30 further includes a second rail 33 and a second slider 34. The second rail 33 is located outside the rotating rod 32 and extends along the width of the fixed plate 10. The second slider 34 is slidably connected to the second rail 33 and is connected to the lower end of the fixed plate 10. Thus, when the fixed plate 10 is moved, the second slider 34 is driven to slide along the extension direction of the second rail 33, thereby ensuring that the fixed plate 10 only moves in a linear direction, preventing deviation that would affect film pulling.

[0034] In one possible embodiment, a coupling 35 is further included, one end of which is connected to the output shaft of the power member 31, and the other end of which is connected to the end of the rotating rod 32. In this way, the coupling 35 is used to achieve a synchronous connection between the power member 31 and the rotating rod 32, ensuring that the rotating rod 32 can be synchronously driven by the power member 31, thereby facilitating stable driving of the fixed plate 10 to slide in the width direction.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic film pulling mechanism, characterized in that: include: A fixed plate having an opening extending in the length direction and capable of reciprocating in the width direction; The clamping assembly includes a driving member and an upper clamping plate and a lower clamping plate passed through the opening, the lower clamping plate is fixed to the fixed plate, the upper clamping plate is located above the lower clamping plate and is connected to the output shaft of the driving member, the driving member is fixed to the fixed plate, and is suitable for driving the upper clamping plate to approach or move away from the lower clamping plate to achieve compression or loosening of the film.

2. The automatic film-pulling mechanism according to claim 1, characterized in that: The lower surface of the upper clamping plate and the upper surface of the lower clamping plate are both provided with convex points for contacting with the film.

3. The automatic film-pulling mechanism according to claim 1, characterized in that: It also includes a first slide rail and a first slider. The fixed plate has a first surface and a second surface arranged opposite to each other. The first surface is provided with a first slide rail extending in the height direction of the fixed plate. The first slide rail is slidably connected to the first slider, and the first slider is connected to the upper clamping plate.

4. The automatic film-pulling mechanism according to claim 3, characterized in that: A connecting portion is extended upward from one end of the upper clamping plate located on the first surface. A first mounting hole is formed on the connecting portion. A second mounting hole matching the first mounting hole is formed on the first sliding block.

5. The automatic film-pulling mechanism according to claim 3, characterized in that: A fixing hole is provided on the top of the upper clamping plate at one end of the first surface, and the output shaft of the driving member is connected to a connector that is snap-fitted with the fixing hole.

6. The automatic film-pulling mechanism according to claim 1, characterized in that: It also includes a pushing assembly, which includes a rotating rod and a power piece. The rotating rod extends along the width direction of the fixed plate, and a slide seat is slidably connected to the rotating rod. The slide seat is connected to the middle part of the lower end of the fixed plate, and the output shaft of the power piece is connected to one end of the rotating rod.

7. The automatic film-pulling mechanism according to claim 6, characterized in that: The pushing assembly also includes a second slide rail and a second slider. The second slide rail is located on the outside of the rotating rod and extends along the width direction of the fixed plate. The second slider is slidably connected to the second slide rail, and the second slider is connected to the lower end of the fixed plate.

8. The automatic film-drawing mechanism according to claim 6, characterized in that: It also includes a coupling, one end of which is connected to the output shaft of the power member, and the other end of which is connected to the end of the rotating rod.

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