Perforating device for plastic bags

Abstract

The utility model relates to the technical field of plastic bag punching, in particular to a punching device for a plastic bag. The device comprises a first fixing plate, the first fixing plate comprises a shell, a pressing plate is arranged on the lower side of the shell, a plurality of first pressure springs are fixedly arranged between the pressing plate and the shell, first push rods are fixedly arranged between the shell and the pressing plate in a bilateral symmetry mode, and pressing rollers are slidably arranged on the lower side of the pressing plate in a bilateral symmetry mode. The end of a plastic bag is pressed downwards into the notch of the second fixing plate through the pressing plate, then the two pressing rollers move towards the two ends of the pressing plate respectively and flatten the end of the plastic bag, then the first pressing spring extrudes the pressing plate downwards and fixes the end of the plastic bag, and the device can automatically stretch and fix the end of the plastic bag, so that the end of the plastic bag can be fixed automatically. And the situation that the punching position is not accurate enough due to loosening or deformation of the plastic bag in the punching process is prevented, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag punching, in particular to a plastic bag punching device. Background Art

[0002] Plastic bags are mainly made of polyethylene and are a common packaging material used in various scenarios such as shopping, food storage, and garbage disposal. In daily life, we often need to use plastic bags. The sizes and shapes of plastic bags for different purposes are also different. In order to facilitate our use, plastic bags usually need to be dug out of one or more holes on their surface during the production process. Since plastic bags are generally light in weight and have a certain toughness, they are easily deformed by the punching device or the fixation of the plastic bags becomes loose during continuous punching, resulting in inaccurate punching positions, which not only affects the appearance of the plastic bags, but also affects the subsequent processing steps and reduces the quality of the finished plastic bags. In view of this, we propose a punching device for plastic bags. Utility Model Content

[0003] The purpose of the present utility model is to provide a punching device for plastic bags to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a punching device for plastic bags, comprising a base, a fixing assembly is provided on the upper side of the base, the fixing assembly comprises two brackets, the two brackets are symmetrically fixed on the upper side of the base, a No. 1 fixing plate is provided between the two brackets, the No. 1 fixing plate comprises a shell, a pressure plate is provided on the lower side of the shell, the upper half of the pressure plate is slidably provided inside the shell, a plurality of No. 1 compression springs are fixedly provided between the pressure plate and the shell, a No. 1 push rod is fixedly provided symmetrically between the shell and the pressure plate, a pressure roller is symmetrically slidably provided on the lower side of the pressure plate, a driving device is fixedly provided inside the pressure roller, and the pressure roller can be extended and retracted.

[0005] As a further improvement of the present technical solution, a No. 2 fixing plate is provided on the lower side of the No. 1 fixing plate, a slot matching the pressure plate is provided on the upper side of the No. 2 fixing plate, a turntable is rotatably provided on the side where the two brackets are close to each other, and the brackets and the No. 1 fixing plate are symmetrically slid up and down between the two turntables.

[0006] As a further improvement of the present technical solution, a baffle is symmetrically fixed on the upper and lower sides of the turntable close to the No. 1 fixed plate, and a No. 2 compression spring is fixed between the baffle and the adjacent No. 1 fixed plate and the No. 2 fixed plate. A motor for driving the turntable to rotate is fixed on the side of the bracket away from the turntable.

[0007] As a further improvement of the present technical solution, a punching assembly is provided on one side of the fixing assembly, and the punching assembly includes a top plate, which is fixedly provided on the upper side of the base, and a puncher is slidingly provided in the middle of the top plate, and the drill bit of the puncher is provided on the lower side of the top plate. The drill bit of the puncher can be retracted, and a No. 2 push rod is fixedly provided between the puncher and both sides of the top plate.

[0008] As a further improvement of the present technical solution, a clamping assembly is provided on the side of the punching assembly away from the fixing assembly, and the clamping assembly includes two fixing frames, which are symmetrically fixed on the upper side of the base, and a clamping block is symmetrically sliding up and down between the two fixing frames.

[0009] As a further improvement of this technical solution, a fixing block is symmetrically fixed on the upper and lower sides of the fixing frame close to the clamping block, a No. 3 compression spring is fixed between the fixing block and the clamping block, and a control panel is fixed on the upper side of the base.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the punching device for plastic bags, the end of the plastic bag is pressed downward into the groove of the No. 2 fixing plate by a pressure plate, and then two pressure rollers move to the two ends of the pressure plate respectively and flatten the end of the plastic bag, and then the No. 1 compression spring presses the pressure plate downward and fixes the end of the plastic bag. When the plastic bag becomes loose during the punching process, the motor drives the turntable to rotate and tighten the plastic bag. The device can automatically stretch and fix the end of the plastic bag, and the plastic bag can be rolled up during the punching process, preventing the plastic bag from becoming loose or deformed during the punching process, resulting in inaccurate punching positions, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the fixing component of the utility model;

[0014] Figure 3 This is a cross-sectional view of the No. 1 fixing plate structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the punching assembly structure of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the clamping assembly of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Base; 2. Fixing assembly; 21. Bracket; 22. Fixing plate No. 1; 221. Housing; 222. Pressure plate; 223. Compression spring No. 1; 224. Push rod No. 1; 225. Pressure roller; 23. Fixing plate No. 2; 24. Turntable; 25. Baffle; 26. Compression spring No. 2; 27. Motor;

[0019] 3. Punch assembly; 31. Top plate; 32. Punch; 33. Push rod No. 2;

[0020] 4. Clamping assembly; 41. Fixing frame; 42. Clamping block; 43. Fixing block; 44. Compression spring No. 3; 5. Control panel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Example 1

[0024] See also Figure 1-Figure 3As shown, this embodiment provides a punching device for plastic bags, including a base 1, a fixing assembly 2 is provided on the upper side of the base 1, the fixing assembly 2 includes two brackets 21, the two brackets 21 are fixedly provided on the upper side of the base 1 symmetrically, a No. 1 fixing plate 22 is provided between the two brackets 21, a No. 2 fixing plate 23 is provided on the lower side of the No. 1 fixing plate 22, a turntable 24 is provided on the side where the two brackets 21 are close to each other, the brackets 21 and the No. 1 fixing plate 22 are symmetrically slidably provided between the two turntables 24, and when using the device, the user first puts one side of the plastic bag on the other side. The end of the plastic bag is placed between the No. 1 fixing plate 22 and the No. 2 fixing plate 23. A baffle 25 is fixedly provided symmetrically on the upper and lower sides of the turntable 24 close to the No. 1 fixing plate 22. A No. 2 compression spring 26 is fixedly provided between the baffle 25 and the No. 1 fixing plate 22 and the No. 2 fixing plate 23. After one end of the plastic bag is placed between the No. 1 fixing plate 22 and the No. 2 fixing plate 23, multiple No. 2 compression springs 26 press the No. 1 fixing plate 22 and the No. 2 fixing plate 23 to the side close to each other. The No. 1 fixing plate 22 includes a shell 221. A pressure plate 222 is provided on the lower side of the shell 221. The pressure plate 22 The upper half of the base 1 is slidably arranged inside the shell 221, and a plurality of No. 1 compression springs 223 are fixedly arranged between the pressure plate 222 and the shell 221. A No. 1 push rod 224 is fixedly arranged between the shell 221 and the pressure plate 222, and a control panel 5 is fixedly arranged on the upper side of the base 1. The user controls the two No. 1 push rods 224 to push the pressure plate 222 downward by operating the control panel 5. At the same time, the plurality of No. 1 compression springs 223 press the pressure plate 222 downward until the pressure plate 222 is in contact with the surface of the plastic bag. A pressure roller 225 is symmetrically arranged on the lower side of the pressure plate 222 for sliding movement. A driving device is fixed inside 225, and the pressure roller 225 can be extended and retracted. After pressing the pressure plate 222 to fit the surface of the plastic bag, the user controls the two pressure rollers 225 to roll away from each other and stretch the plastic bag. The two pressure rollers 225 roll to both sides of the pressure plate 222 respectively and then shrink inside the pressure plate 222. Then the pressure plate 222 continues to press the plastic bag downward. The upper side of the No. 2 fixed plate 23 is provided with a slot matching the pressure plate 222. The pressure plate 222 presses one end of the plastic bag into the slot of the No. 2 fixed plate 23 and fixes it.

[0025] See also Figure 1-Figure 5As shown, a punching assembly 3 is provided on one side of the fixing assembly 2, and a clamping assembly 4 is provided on the side of the punching assembly 3 away from the fixing assembly 2. The clamping assembly 4 includes two fixing frames 41, and the two fixing frames 41 are symmetrically fixed on the upper side of the base 1. A clamping block 42 is symmetrically provided between the two fixing frames 41 for sliding up and down. A fixing block 43 is symmetrically fixed on the side of the fixing frame 41 close to the clamping block 42, and a No. 3 compression spring 44 is fixed between the fixing block 43 and the clamping block 42. After fixing one end of the plastic bag, the user straightens the rear end of the plastic bag and places it between the two clamping blocks 42. Then the No. 3 compression spring 44 presses the two clamping blocks 42 to the side close to each other and fixes the rear end of the plastic bag. The punching assembly 3 includes a top plate 31, which is fixedly provided on the upper side of the base 1, and a puncher 32 is slidably provided in the middle of the top plate 31. The drill bit of the puncher 32 is provided on the lower side of the top plate 31. After the plastic bag is pulled to the specified position, the user controls the hole puncher 32 to punch holes in the plastic bag again.

[0026] When the plastic bag punching device of this embodiment is used, the user first places one end of the plastic bag between the No. 1 fixing plate 22 and the No. 2 fixing plate 23, and then controls the two No. 1 push rods 224 to push the pressure plate 222 to press the end of the plastic bag downward into the groove of the No. 2 fixing plate 23. At the same time, the two pressure rollers 225 move to the two ends of the pressure plate 222 respectively and flatten the end of the plastic bag. Then the No. 1 compression spring 223 squeezes the pressure plate 222 downward and fixes the end of the plastic bag. When the plastic bag becomes loose during the punching process, the motor 27 drives the turntable 24 to rotate and tighten the plastic bag. The device can automatically stretch and fix the end of the plastic bag. The plastic bag can be rolled up during the punching process, preventing the plastic bag from loosening or deforming during the punching process, causing the punching position to be inaccurate, thereby improving the practicality of the device.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for plastic bags, comprising a base (1), a fixing assembly (2) provided on the upper side of the base (1), the fixing assembly (2) comprising two brackets (21), the two brackets (21) being fixedly provided on the upper side of the base (1) in a bilaterally symmetrical manner, a first fixing plate (22) being provided between the two brackets (21), and characterized in that: The No. 1 fixed plate (22) includes a shell (221), a pressure plate (222) is provided on the lower side of the shell (221), the upper half of the pressure plate (222) is slidably provided inside the shell (221), a plurality of No. 1 compression springs (223) are fixedly provided between the pressure plate (222) and the shell (221), a No. 1 push rod (224) is fixedly provided symmetrically between the shell (221) and the pressure plate (222), a pressure roller (225) is symmetrically provided on the lower side of the pressure plate (222) for sliding movement, a driving device is fixedly provided inside the pressure roller (225), and the pressure roller (225) can be extended and retracted.

2. The plastic bag punching device according to claim 1, characterized in that: A second fixing plate (23) is provided on the lower side of the first fixing plate (22), and a notch matching the pressing plate (222) is provided on the upper side of the second fixing plate (23). A turntable (24) is rotatably provided on the side where the two brackets (21) are close to each other, and the brackets (21) and the first fixing plate (22) are symmetrically slidably provided between the two turntables (24) up and down.

3. The plastic bag punching device according to claim 2, characterized in that: A baffle (25) is fixedly provided symmetrically on the upper and lower sides of the turntable (24) near the first fixing plate (22), and a second compression spring (26) is fixedly provided between the baffle (25) and the adjacent first fixing plate (22) and the second fixing plate (23). A motor (27) for driving the turntable (24) to rotate is fixedly provided on the side of the bracket (21) away from the turntable (24).

4. The plastic bag punching device according to claim 1, characterized in that: A punching assembly (3) is provided on one side of the fixing assembly (2), and the punching assembly (3) includes a top plate (31), the top plate (31) is fixedly provided on the upper side of the base (1), a punch (32) is slidably provided in the middle of the top plate (31), a drill bit of the punch (32) is provided on the lower side of the top plate (31), and the drill bit of the punch (32) can be retracted, and a second push rod (33) is fixedly provided between both sides of the punch (32) and the top plate (31).

5. The plastic bag punching device according to claim 4, characterized in that: A clamping assembly (4) is provided on a side of the punching assembly (3) away from the fixing assembly (2), and the clamping assembly (4) comprises two fixing frames (41). The two fixing frames (41) are fixedly arranged on the upper side of the base (1) in a left-right symmetrical manner, and a clamping block (42) is symmetrically slidably arranged between the two fixing frames (41) in an up-down manner.

6. The plastic bag punching device according to claim 5, characterized in that: A fixing block (43) is symmetrically fixedly provided on one side of the fixing frame (41) close to the clamping block (42), and a No. 3 compression spring (44) is fixedly provided between the fixing block (43) and the clamping block (42). A control panel (5) is fixedly provided on the upper side of the base (1).

Images