Film discharging device of packaging machine

Abstract

The utility model relates to the technical field of packaging equipment, and discloses a film discharging device of a packaging machine, the film discharging device comprises a supporting rod mounted on the side wall of the packaging machine, an unwinding roller is rotatably arranged on the supporting rod, a packaging film is wound on the outer side of the unwinding roller, a cross rod is fixedly mounted on the side wall of the supporting rod, a tensioning assembly is arranged on the cross rod, and the tensioning assembly is fixedly connected with the supporting rod. The tensioning assembly comprises an upper roller and a lower roller which are rotatably arranged on the cross rod through a rotating shaft, a moving groove is formed in the rear end of the cross rod, a moving block is slidably arranged in the moving groove, a spring is connected between the moving block and the side wall of the moving groove, and a tensioning roller is rotatably connected to the moving block through a rotating shaft; the upper roller and the lower roller are arranged on the transverse plate, and a moving groove, a moving block, a spring and a tensioning roller are arranged in a matched mode, so that a packaging film can be tensioned, the packaging film is prevented from being too loose during film discharging, and the film discharging effect of the packaging film is improved.

Description

Technical Field

[0001] The present application relates to the technical field of packaging equipment, and in particular to a film discharging device of a packaging machine. Background Art

[0002] A packaging machine is a device capable of packaging products. When the existing packaging machine packages products that require packaging bags, the packaging machine needs to continuously send out a packaging film that can form a packaging bag for packing the products, and the size of the packaging film needs to be accurately measured according to the size of the products.

[0003] However, when the existing packaging machine is in use, it is not convenient to tension the packaging film according to actual needs, resulting in the packaging film being prone to looseness during film discharging, which affects the subsequent use of the packaging film.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Utility Model

[0005] In order to solve the problem that when the existing packaging machine is in use, it is not convenient to tension the packaging film according to actual needs, resulting in the packaging film being prone to looseness during film discharging, which affects the subsequent use of the packaging film, the present application provides a film discharging device of a packaging machine.

[0006] The film discharging device of a packaging machine provided by the present application adopts the following technical solutions:

[0007] A film discharging device of a packaging machine includes a support rod installed on the side wall of the packaging machine. A winding roller is rotatably arranged on the support rod, and a packaging film is wound around the outer side of the winding roller. A cross bar is fixedly installed on the side wall of the support rod, and a tensioning assembly is arranged on the cross bar. The tensioning assembly includes an upper roller and a lower roller rotatably arranged on the cross bar through a rotating shaft. A moving groove is formed at the rear end of the cross bar, and a moving block is slidably arranged inside the moving groove. A spring is connected between the moving block and the side wall of the moving groove. A tensioning roller is rotatably connected to the moving block through a rotating shaft.

[0008] Preferably, a limiting groove communicating with the moving groove is formed on the cross bar, and a limiting block is slidably arranged inside the limiting groove. The limiting block is fixedly connected to the moving block.

[0009] Preferably, a lifting groove is formed on the cross bar, and a lifting block is slidably connected inside the lifting groove. The upper roller is rotatably arranged on the lifting block through a rotating shaft, and a threaded rod is rotatably connected to the top of the lifting block. The threaded rod is threadedly connected to the cross bar.

[0010] Preferably, the top of the threaded rod penetrates through the side wall of the cross bar and is fixedly connected with a turntable, and a plurality of anti-slip grooves are formed in the circumferential direction of the turntable.

[0011] Preferably, the support rod is detachably mounted on the side wall of the packaging machine through a connecting bolt.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] 1. In the present application, by providing an upper roller and a lower roller on the cross plate, and cooperating with the moving groove, the moving block, the spring and the tensioning roller, the packaging film can be tensioned, avoiding the packaging film from being too loose when the film is discharged, and improving the film discharging effect of the packaging film;

[0014] 2. In the present application, by providing a lifting groove on the cross bar and cooperating with the lifting block and the threaded rod, by rotating the threaded rod, the threaded rod can push the lifting block to move up and down, so that the upper roller can approach or move away from the lower roller, realizing the guiding extrusion of packaging films with different thicknesses, and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the application;

[0016] Figure 2 is a schematic side view structure of the support rod and the cross bar of an embodiment of the application;

[0017] Figure 3 is a schematic semi-sectional structure of the cross bar of an embodiment of the application.

[0018] Description of the reference numerals: 1, support rod; 2, unwind roller; 3, packaging film; 4, cross bar; 5, tensioning assembly; 51, lower roller; 52, upper roller; 53, lifting groove; 54, threaded rod; 55, lifting block; 56, moving groove; 561, limiting groove; 57, moving block; 571, limiting block; 58, spring; 59, tensioning roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following is a further detailed description of the present application with reference to the Figures 1-3 accompanying drawings.

[0020] The embodiment of the present application discloses a film discharging device of a packaging machine. Refer to Figures 1-3, A film discharging device of a packaging machine, including a support rod 1 installed on the side wall of the packaging machine. A winding roller 2 is rotatably arranged on the support rod 1. A packaging film 3 is wound around the outside of the winding roller 2. And a cross bar 4 is fixedly installed on the side wall of the support rod 1. A tensioning assembly 5 is arranged on the cross bar 4. The tensioning assembly 5 includes an upper roller 52 and a lower roller 51 rotatably arranged on the cross bar 4 through a rotating shaft. And a moving groove 56 is opened at the rear end of the cross bar 4. A moving block 57 is slidably arranged inside the moving groove 56. A spring 58 is connected between the moving block 57 and the side wall of the moving groove 56. A tensioning roller 59 is rotatably connected to the moving block 57 through a rotating shaft.

[0021] Here, by rotatably arranging the upper roller 52 and the lower roller 51 on the cross bar 4, the packaging film 3 can be extruded, improving the stability of the film discharging of the packaging film 3. At the same time, by opening a moving groove 56 on the cross bar 4 and cooperating with the moving block 57, the spring 58 and the tensioning roller 59, the packaging film 3 can be tensioned, avoiding the packaging film 3 from being too loose when discharging the film, thereby improving the film discharging quality of the packaging machine.

[0022] Refer to Figure 3 , A limiting groove 561 communicating with the moving groove 56 is opened on the cross bar 4. A limiting block 571 is slidably arranged inside the limiting groove 561. The limiting block 571 is fixedly connected to the moving block 57.

[0023] Here, by arranging the limiting groove 561 and the limiting block 571, the movement of the moving block 57 can be guided, avoiding the deviation of the movement of the moving block 57.

[0024] Refer to Figure 2 , A lifting groove 53 is opened on the cross bar 4. A lifting block 55 is slidably connected inside the lifting groove 53. The upper roller 52 is rotatably arranged on the lifting block 55 through a rotating shaft. And a threaded rod 54 is rotatably connected to the top of the lifting block 55. The threaded rod 54 is threadedly connected to the cross bar 4.

[0025] Here, by rotating the threaded rod 54, the threaded rod 54 can push the lifting block 55 to move up and down, so that the upper roller 52 can approach or move away from the lower roller 51, thereby guiding the extrusion of packaging films 3 with different thicknesses.

[0026] Refer to Figure 2 , The top of the threaded rod 54 penetrates through the side wall of the cross bar 4 and is fixedly connected to a turntable. A plurality of anti-slip grooves are opened in the circumferential direction of the turntable.

[0027] Here, by arranging the turntable and opening anti-slip grooves on the turntable, it is convenient to drive the threaded rod 54 to rotate.

[0028] Refer to Figure 2 , The support rod 1 is detachably installed on the side wall of the packaging machine through a connecting bolt.

[0029] Here, by making the support rod 1 detachably connected to the packaging machine, it is convenient to replace the support rod 1.

[0030] The implementation principle of the film outlet device of a packaging machine in an embodiment of the present application is as follows: during use, the support rod 1 is fixedly installed on the side wall of the packaging machine, and then the packaging film 3 is wound around the outside of the unwinding roller 2, and the packaging film 3 is passed through between the upper roller 52 and the lower roller 51 and wound around the outside of the tensioning roller 59 to package the article. During packaging, the upper roller 52 and the lower roller 51 can extrude and guide the packaging film 3, and cooperate with the moving groove 56, the moving block 57, the spring 58 and the tensioning roller 59, so that the packaging film 3 can be tensioned, ensuring the film outlet quality of the packaging film 3; secondly, the device is provided with a lifting groove 53 on the cross bar 4, and is provided with a lifting block 55 and a threaded rod 54 in cooperation, so that by rotating the threaded rod 54, the threaded rod 54 can push the lifting block 55 and the upper roller 52 to move up and down, so that the distance between the upper roller 52 and the lower roller 51 can be adjusted, so that the device can extrude and guide packaging films 3 of different thicknesses, improving the practicability of the device.

[0031] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0032] Second: In the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments of the present disclosure are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0034] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A film discharging device of a packaging machine, comprising a support rod (1) mounted on a side wall of the packaging machine, characterized in that: A reel (2) is rotatably arranged on the support rod (1), a packaging film (3) is wound around the outer side of the reel (2), and a cross bar (4) is fixedly installed on the side wall of the support rod (1), a tensioning assembly (5) is arranged on the cross bar (4), the tensioning assembly (5) comprises an upper roller (52) and a lower roller (51) which are rotatably arranged on the cross bar (4) via a rotating shaft, and a movable groove (56) is provided at the rear end of the cross bar (4), a movable block (57) is slidably arranged inside the movable groove (56), a spring (58) is connected between the movable block (57) and the side wall of the movable groove (56), and a tensioning roller (59) is rotatably connected to the movable block (57) via a rotating shaft.

2. The film discharging device of a packaging machine according to claim 1, characterized in that: The cross bar (4) is provided with a limiting groove (561) which is in communication with the moving groove (56), and a limiting block (571) is slidably arranged inside the limiting groove (561), and the limiting block (571) is fixedly connected to the moving block (57).

3. The film discharging device of a packaging machine according to claim 1, characterized in that: The cross bar (4) is provided with a lifting groove (53), the interior of the lifting groove (53) is slidably connected with a lifting block (55), the upper roller (52) is rotatably arranged on the lifting block (55) via a rotating shaft, and the top of the lifting block (55) is rotatably connected with a threaded rod (54), and the threaded rod (54) is threadedly connected to the cross bar (4).

4. The film discharging device of a packaging machine according to claim 3, characterized in that: The top of the threaded rod (54) passes through the side wall of the cross rod (4) and is fixedly connected to a turntable, and a plurality of anti-slip grooves are provided in the circumferential direction of the turntable.

5. The film discharging device of a packaging machine according to claim 1, characterized in that: The support rod (1) is detachably mounted on the side wall of the packaging machine via connecting bolts.

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