A film pulling and packaging device facilitating operation

Abstract

This utility model provides an easy-to-operate film-pulling and packaging device, including a film supply mechanism, a film pulling mechanism, and a film opening mechanism. The film supply mechanism includes a film feeding frame, a film feeding roller, and a film separating component. The film separating component is used to separate the plastic sealing film output from the film feeding outlet into upper and lower sections. The film pulling mechanism is used to clamp the side portion of the plastic sealing film fed from the film feeding outlet and pull it until its front edge faces the film opening mechanism. The film feeding frame is also equipped with a hot cutting knife. The film opening mechanism is used to open the plastic sealing film along its front edge to expose its entrance for pushing into the box. The film pulling mechanism includes a clamping component and a film pulling hook. The film separating component is configured as a rod. The rod has a ramp, a groove, and a positioning part. The groove allows the film pulling hook to extend and pull out the plastic sealing film, and the positioning part correspondingly avoids an operable area that allows the clamping component to clamp the side portion of the plastic sealing film from top to bottom. This reduces the reliance on manual intervention, making the film pulling operation more precise and error-free, and more conducive to the automation of the production line.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to an easy-to-operate film-stretching and packaging device. Background Technology

[0002] In existing packaging lines, it is common practice to place the product in a plastic sealing film before sealing, cutting, and opening the film to facilitate boxing and lamination. However, in actual production applications, on the one hand, the roll film often has a multi-layered or double-layered structure at the delivery end, which is prone to interlayer adhesion, overlap, or misalignment, leading to failures in subsequent clamping, stretching, and opening actions. On the other hand, when inserting the film pulling hook into the film layers to separate and pull out the film side, the film layers are not reliably separated or positioned, making it easy for the pulling hook to fail to insert, puncture the film, or stretch and deform it. In particular, traditional clamping methods are not easy to stably position the clamping area on the side, and the clamping and stretching are not precise, resulting in incomplete film pulling, incomplete exposure of the opening, or failure of sealing and cutting. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an easy-to-operate film stretching and packaging device to solve the above problems.

[0004] The present invention adopts the following solution:

[0005] This application provides an easy-to-operate film stretching and packaging device, including a film feeding mechanism, a film stretching mechanism, and a film opening mechanism; the film feeding mechanism includes a film feeding frame, multiple sets of film feeding rollers disposed on the film feeding frame, and a film separating component formed at the film feeding outlet; the film separating component is used to separate the plastic sealing film output from the film feeding outlet vertically; the film stretching mechanism is used to clamp the side portion of the plastic sealing film fed from the film feeding outlet and pull it until its front edge faces the film opening mechanism; the film feeding frame is also provided with a hot-cutting knife for sealing and cutting the plastic sealing film after stretching; the film opening mechanism... The film-pulling mechanism is used to open the plastic film along its front edge to expose its entrance for pushing into the box; the film-pulling mechanism includes a clamping member and a film-pulling hook; the film-separating member is configured as a rod for separating the plastic film so that the film-pulling hook can extend into the plastic film; the rod has a ramp portion facing the film-opening direction, a groove portion facing away from the film-opening direction, and a positioning portion arranged adjacent to and side by side with the groove portion; the groove portion allows the film-pulling hook to extend into and pull out the plastic film, and the positioning portion correspondingly avoids an operable area that allows the clamping member to clamp the side edge of the plastic film from top to bottom.

[0006] As a further improvement, two clamping members are arranged side by side along the length of the positioning part, with at least one clamping member facing the operable area.

[0007] As a further improvement, the rod extends integrally along the bottom surface to form a clearance opening for creating an operable area, and the clamping member located on the inner side can accurately clamp the side of the plastic sealant at the clearance opening.

[0008] As a further improvement, the length of the positioning part is greater than the length of the groove part.

[0009] As a further improvement, the film-pulling hook is correspondingly disposed on a transverse member, which is used to drive the film-pulling hook to extend into the inlet of the plastic sealing film.

[0010] As a further improvement, the clamping member is correspondingly configured on the transverse moving member and arranged side by side behind the film pulling hook.

[0011] As a further improvement, the lateral movement component is linked with a driving mechanism, and the driving mechanism is equipped with a cylinder component for reciprocating drive of the lateral movement component.

[0012] As a further improvement, the film-opening mechanism includes a film-opening component and a linear moving component. The film-opening component is used to separate the plastic sealing film along the positive edge, and the linear moving component is used to drive the film-opening component to reciprocate between the film-pulling mechanism and the subsequent material-pushing mechanism.

[0013] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0014] The film-pulling and packaging device of this application, through the cooperation of the rod structure, ramp and groove of the film-splitting component, stably separates the film layers at the delivery point, forming a space for the film-pulling hook to enter freely. This significantly reduces the risk of the film-pulling hook failing to insert, puncturing, or being stretched and deformed. The parallel arrangement of the positioning part and the groove provides a clear and safe upper and lower clamping area for the clamping part, enabling the clamping part to stably clamp the side of the film and work synchronously with the film-pulling hook, thereby ensuring the accuracy of the film-pulling axis and smooth pulling out. In addition, the positioning part provided on the film-splitting component reduces the reliance on manual intervention, making the film-pulling operation more precise and error-free, and more conducive to the automation of the production line. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the easy-to-operate film stretching and packaging device according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0017] Figure 3 This is a schematic diagram of the film supply mechanism and film pulling mechanism of the film pulling and packaging device that is easy to operate according to an embodiment of the present utility model;

[0018] Figure 4 yes Figure 3 Structural diagrams from other perspectives;

[0019] Figure 5 This is a schematic diagram of the film-separating component of the film-stretching and packaging device, which is easy to operate according to an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the opening mechanism of the film-pulling and packaging device, which is easy to operate according to an embodiment of the present invention.

[0021] Icons: 1-Film feeding mechanism; 11-Film feeding frame; 12-Film feeding roller; 13-Film separating component; 14-Hot cutting knife; 15-Slope section; 16-Groove section; 17-Positioning section; 18-Allowing opening; 2-Film pulling mechanism; 21-Clamping component; 22-Film pulling hook; 23-Transverse movement component; 3-Film opening mechanism; 31-Film opening assembly; 32-Linear movement assembly. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0023] Example

[0024] Combination Figures 1 to 6 This embodiment provides an easy-to-operate film-stretching and packaging device, including a film supply mechanism 1, a film-stretching mechanism 2, and a film-opening mechanism 3.

[0025] The film supply mechanism 1 includes a film feeding frame 11, multiple sets of film feeding rollers 12 disposed on the film feeding frame 11, and a film separating component 13 formed at the film feeding outlet. The film separating component 13 is used to separate the plastic sealing film output from the film feeding outlet vertically.

[0026] The film-pulling mechanism 2 is used to clamp the side of the plastic seal film delivered from the film-feeding outlet and pull it until its front edge faces the film-opening mechanism 3. The film-feeding frame 11 is also equipped with a hot-cutting knife 14 for sealing and cutting the plastic seal film after pulling. The film-opening mechanism 3 is used to open the plastic seal film along its front edge to expose its entrance for pushing into the box.

[0027] Specifically, the film-pulling mechanism 2 includes a clamping member 21 and a film-pulling hook 22. The film-separating member 13 is configured as a rod-shaped member for separating the plastic seal film so that the film-pulling hook 22 can extend into the plastic seal film. The rod-shaped member has a ramp portion 15 facing the film-opening direction, a groove portion 16 facing away from the film-opening direction, and a positioning portion 17 arranged adjacent to and side by side with the groove portion 16. The groove portion 16 allows the film-pulling hook 22 to extend into and pull out the plastic seal film, and the positioning portion 17 correspondingly avoids an operable area that allows the clamping member 21 to clamp the side of the plastic seal film vertically.

[0028] The aforementioned film-pulling and packaging device, through the rod structure of the film-splitting component 13, the cooperation of the ramp portion 15 and the groove portion 16, allows the film layers to be stably separated at the delivery point, forming a space for the film-pulling hook 22 to enter freely. This significantly reduces the risk of the film-pulling hook 22 failing to insert, puncturing, or being deformed by pulling. The parallel arrangement of the positioning portion 17 and the groove provides a clear and safe upper and lower clamping area for the clamping component 21, enabling the clamping component 21 to stably clamp the side of the film and work synchronously with the film-pulling hook 22, thereby ensuring accurate film-pulling axis and smooth pulling out. In addition, the positioning portion 17 provided on the film-splitting component 13 reduces the reliance on manual intervention, making the film-pulling operation more precise and error-free, and more conducive to the automation of the production line.

[0029] It should be mentioned that the roll of plastic sealing film is correspondingly configured on the film feeding frame 11 and is transported to the film feeding outlet by multiple sets of film feeding rollers 12. The plastic sealing film is double-layered, which is necessary to meet the requirements of bagging and film covering. This is a common structure of existing wrapping machines, so no further restrictions are imposed here.

[0030] like Figures 2 to 4 As shown, in this embodiment, two clamping members 21 are arranged side by side along the length of the positioning part 17, with at least one clamping member 21 facing the operable area. This makes the clamping action redundant and fault-tolerant. Even if one clamping member 21 fails to clamp reliably due to alignment deviation or local film material defects, the other clamping member 21 can still complete the upper and lower clamping within the operable area, thereby improving the success rate and stability of film stretching.

[0031] Furthermore, the rod extends integrally along its bottom surface to form a clearance opening 18 for creating an operable area, and the clamping member 21 located on the inner side can accurately clamp the side of the plastic sealant at the clearance opening 18. The clearance opening 18, which extends integrally along the bottom surface of the rod to form an operable area, has an opening or recessed structure at the positioning part 17, allowing the clamping member 21 located on the inner side to enter through the opening of the clearance opening 18 and accurately clamp the side of the plastic sealant. Because the clearance opening 18 provides space for the clamping action, the clamping member 21 is clamped at a controlled position near the side of the film, avoiding lateral interference to the film and obstruction of the hook's movement, greatly improving clamping positioning accuracy, reducing clamping failure rate, and facilitating the coordinated action of the clamping member 21 and the film-pulling hook 22.

[0032] Preferably, the length of the positioning part 17 is greater than the length of the groove part 16. To improve the operable area and clamping reliability, the length of the positioning part 17 is extended accordingly. By extending the positioning part 17 beyond the range of the groove part 16 along the length direction, a larger operable area and a wider positioning buffer band can be provided for the clamping member 21, thereby allowing the clamping member 21 to perform up and down clamping operations in multiple positions or multiple strokes, reducing the probability of clamping failure due to alignment deviation.

[0033] like Figure 2 and Figure 3 As shown, in this embodiment, the film-pulling hook 22 is correspondingly disposed on a transverse member 23, which is used to drive the film-pulling hook 22 into the entrance of the plastic seal film. The transverse member 23 can move freely laterally along a direction intersecting or perpendicular to the rod member, thereby driving the film-pulling hook 22 from its waiting position into the entrance of the plastic seal film already formed by the film-separating member 13. After completing the pull-out action, the transverse member 23 pulls the film-pulling hook 22 back or removes it from the plastic seal film.

[0034] It is understood that the transverse component 23 can be implemented by a linear slide, guide rail / screw mechanism, cylinder or servo-driven linear displacement mechanism, and can be used in conjunction with a stroke limit mechanism and position sensor to achieve precise position control and speed / acceleration adjustment, thereby reducing the risk of impact or puncture to the film, and facilitating the timing linkage with the clamping component 21, the hot cutting knife 14 and the film opening mechanism 3.

[0035] In this embodiment, the clamping member 21 is correspondingly disposed on the transverse member 23 and arranged side by side behind the film-pulling hook 22. Specifically, the clamping member 21 is located behind the film-pulling hook 22, so that when the transverse member 23 drives the film-pulling hook 22 to extend forward from the waiting position into the plastic sealing film inlet, the clamping member 21 can clamp the side of the plastic sealing film from the rear along the clearance opening 18 after the film-pulling hook 22 has been inserted and positioned. Thus, the side-by-side arrangement of the clamping member 21 and the film-pulling hook 22 ensures a clear and uninterrupted hook entry path and facilitates the orderly coordination of clamping and film-pulling actions. Obviously, the clamping member 21 can be a vertical stroke clamping plate, clamping block, or pneumatic clamp, etc., disposed on the transverse member 23, and can be driven by a cylinder to complete the clamping and releasing actions.

[0036] It should be mentioned that the transverse member 23 is linked with a drive mechanism (not shown in the figure), and the drive mechanism is equipped with a cylinder for reciprocating drive of the transverse member 23. Thus, through the cooperation of the transverse member 23 and the cylinder, the clamping member 21 and the film-pulling hook 22 are driven to move back and forth in the film-pulling direction to repeatedly perform mechanical film-pulling operations.

[0037] like Figure 1 and Figure 6 As shown, in this embodiment, the film-opening mechanism 3 includes a film-opening component 31 and a linear moving component 32. The film-opening component 31 is used to separate the plastic sealing film along its positive edge, and the linear moving component 32 is used to drive the film-opening component 31 to reciprocate between the film-stretching mechanism 2 and the subsequent pushing mechanism (not shown). It should be noted that the opening arrangement of the upper and lower film-opening components of the film-opening component 31 at the inlet, as well as the driving arrangement of the linear moving component 32, are existing structural designs of the wrapping machine, and therefore will not be described in detail here.

[0038] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A film stretching and packaging device that is easy to operate, characterized in that, This includes a film supply mechanism, a film pulling mechanism, and a film opening mechanism; The film supply mechanism includes a film feeding frame, multiple sets of film feeding rollers arranged on the film feeding frame, and a film separating component formed at the film feeding outlet; the film separating component is used to separate the plastic sealing film output from the film feeding outlet into upper and lower parts. The film-pulling mechanism is used to clamp the side of the plastic seal film delivered from the film-feeding outlet and pull it until its front edge faces the film-opening mechanism; the film-feeding frame is also equipped with a hot-cutting knife for sealing and cutting the plastic seal film after pulling. The film opening mechanism is used to open the plastic seal along the front edge to expose its entrance for pushing into the box; The film-pulling mechanism includes a clamping member and a film-pulling hook; the film-separating member is configured as a rod-shaped member for separating the plastic seal film so that the film-pulling hook can extend into the plastic seal film; Furthermore, the rod body has a ramp portion facing the film opening direction, a groove portion facing away from the film opening direction, and a positioning portion arranged adjacent to and side by side with the groove portion; the groove portion allows the film pulling hook to extend in and pull out the plastic sealing film, and the positioning portion correspondingly avoids the operable area that allows the clamping member to clamp the side of the plastic sealing film from top to bottom.

2. The easy-to-operate film stretching and packaging device according to claim 1, characterized in that, Two clamping members are arranged side by side along the length of the positioning part, with at least one clamping member facing the operable area.

3. The easy-to-operate film stretching and packaging device according to claim 2, characterized in that, The rod extends integrally along the bottom surface to form a clearance opening for creating an operable area, and the clamping member located on the inner side can accurately clamp the side of the plastic sealant at the clearance opening.

4. The easy-to-operate film stretching and packaging device according to claim 2, characterized in that, The length of the positioning part is greater than the length of the groove part.

5. The easy-to-operate film stretching and packaging device according to claim 1, characterized in that, The film-pulling hook is correspondingly disposed on a transverse moving member, which is used to drive the film-pulling hook to extend into the inlet of the plastic sealing film.

6. The easy-to-operate film stretching and packaging device according to claim 5, characterized in that, The clamping member is correspondingly configured on the transverse moving member and is arranged side by side behind the film pulling hook.

7. The easy-to-operate film stretching and packaging device according to claim 5, characterized in that, The lateral movement component is linked to a driving mechanism, and the driving mechanism is equipped with a cylinder component for reciprocating driving of the lateral movement component.

8. The easy-to-operate film stretching and packaging device according to claim 1, characterized in that, The film-opening mechanism includes a film-opening component and a linear moving component. The film-opening component is used to separate the plastic sealing film along the positive edge. The linear moving component is used to drive the film-opening component to reciprocate between the film-pulling mechanism and the subsequent material-pushing mechanism.

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