Packaging bag film cutting device

Abstract

The utility model discloses a packaging bag film cutting device, which relates to the technical field of packaging bag production and comprises a base, a conveying belt is arranged on one side of the top of the base, a positioning film cutting mechanism is arranged on one side of the conveying belt, a guide mechanism is arranged on the top of the conveying belt, and the positioning film cutting mechanism comprises a film cutting seat. Two first positioning rollers are arranged on one side of the film cutting base and are in transmission connection, and the end of one first positioning roller is fixedly connected with a first motor. According to the packaging bag film cutting device, a film is conveyed to a film cutting base through a first positioning roller, then a second positioning roller rotates to straighten the film, a third motor drives a lower moving base to move downwards and a lifting base to move upwards, and the lower moving base drives a positioning base to press the film at the film cutting position, so that the film can be pulled out by the required length and straightened; and meanwhile, the film cutting position is pressed and positioned during film cutting, the film is prevented from deviating, and therefore the film cutting effect can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag production, in particular to a packaging bag film cutting device. Background Art

[0002] During the production process of packaging bags, a film cutting device is required to cut the film, and then the cut films are fixed together to form packaging bags. In the prior art, the film cutting device is prone to deviation at the cut of the film, making the film cutting effect less than ideal.

[0003] For example, patent publication number CN220031318U specifically discloses a packaging bag film cutting device, including a shell, a rotating motor is arranged on one side of the shell, a transmission structure is arranged on one end of the shell, a support plate is fixedly connected to one side of the transmission structure, a C-shaped plate is fixedly connected to one side of the support plate, two sets of movable support frames are arranged above the C-shaped plate, the top of the movable support frame is fixedly connected to the top of the shell, the bottom of the movable support frame is fixedly connected to a transmission wheel, the bottom of the movable support frame is fixedly connected to a rotating wheel, a transmission belt is sleeved between the transmission wheel and one side of the rotating wheel, the diameter of the transmission wheel is smaller than the diameter of the rotating wheel, a negative pressure absorption structure is arranged on one side of the rotating wheel, and the negative pressure absorption structure is fixedly connected to one side of the shell. When in use, this packaging bag film cutting device straightens the packaging bag through the cooperation of the transmission wheel, the C-shaped plate, the rotating wheel and other parts, thereby improving the working efficiency of this packaging bag film cutting device, but there is a problem that this film cutting device is prone to offset at the incision of the film, making the film cutting effect less than ideal. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a packaging bag film cutting device, which solves the problem that the film cutting device is prone to deviation at the incision of the film, resulting in an unsatisfactory film cutting effect.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a packaging bag film cutting device, comprising a base, a conveyor belt is provided on one side of the top of the base, a positioning film cutting mechanism is provided on one side of the conveyor belt, and a guide mechanism is provided on the top of the conveyor belt;

[0006] The film positioning and cutting mechanism comprises a film cutting seat, one side of the film cutting seat is provided with two first positioning rollers, the two first positioning rollers are transmission connected, one end of the first positioning roller is fixedly connected to the first motor, the other side of the film cutting seat is provided with a second positioning roller, the end of the second positioning roller is fixedly connected to the second motor, the film cutting seat is fixedly connected with two vertical frames, a lower moving seat is slidably connected between the two vertical frames, a rising seat is provided at the bottom of the lower moving seat, a film cutting knife is fixedly connected to the top surface of the rising seat, a guide rod is slidably connected inside the lower moving seat, a spring is provided on the guide rod, the end of the guide rod is fixedly connected to the positioning seat, both ends of the lower moving seat and the rising seat are fixedly connected with guide blocks, a driven rack is fixedly connected to the guide block, a driving gear is provided between every two adjacent driven racks, and the ends of the two driving gears are transmission-connected with a driving shaft, and one side of the driving shaft is transmission-connected with a third motor.

[0007] Preferably, a support frame is fixedly connected to the base, and the support frame is arranged between the film cutting seat and the conveyor belt. The two first positioning rollers are rotatably connected to the support frame, and the two first positioning rollers are transmission connected via a first gear pair.

[0008] Preferably, the two stands are arranged between the first positioning roller and the second positioning roller, and the two stands are symmetrically arranged on both sides of the film cutting seat.

[0009] Preferably, the lower seat is slidably connected to the stand through a guide block, and the rising seat is slidably connected to the inner wall of the film cutting seat through a guide block.

[0010] Preferably, the positioning seat is slidably connected to the downward moving seat via a guide rod, and the spring is arranged between the downward moving seat and the positioning seat.

[0011] Preferably, the driving gear is meshed with driven racks on both sides, the driving gear is transmission-connected to the driving shaft via a second gear pair, and the driving shaft is transmission-connected to the output shaft end of the third motor via a third gear pair.

[0012] Preferably, the guide mechanism comprises a guide frame, the guide frame is arranged on the outside of the conveyor belt, a bidirectional screw is rotatably connected inside the guide frame, and an adjustment hand wheel is fixedly connected to the end of the bidirectional screw.

[0013] Preferably, the bidirectional screw is provided with two sections of threads in opposite directions, and two sliders are threadedly connected to the bidirectional screw, and the bottom ends of the two sliders are fixedly connected to guide plates.

[0014] Beneficial Effects

[0015] The utility model provides a packaging bag film cutting device. Compared with the prior art, it has the following beneficial effects:

[0016] 1. The packaging bag film cutting device sends the film to the film cutting seat through the first positioning roller, and then the second positioning roller rotates to straighten the film, and the third motor drives the lower seat to move downward and the ascending seat to move upward. The lower seat drives the positioning seat to press the film at the film cutting position, so that the required length can be pulled out and the film is straightened. At the same time, the film cutting position is pressed and positioned when cutting the film to prevent the film from shifting, thereby effectively improving the film cutting effect.

[0017] 2. The packaging bag film cutting device can guide films of different widths by rotating the adjustment hand wheel, which drives the bidirectional screw to rotate. The bidirectional screw drives the two sliders to move. The movement of the slider drives the guide plates to move toward each other and adjust the spacing, so as to prevent deviation during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the positioning film cutting mechanism of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure between the rising seat and the lowering seat of the utility model;

[0021] Figure 4 It is a schematic diagram of the guide mechanism structure of the utility model.

[0022] In the figure: 1. base; 2. positioning film cutting mechanism; 201. film cutting seat; 202. driving shaft; 203. first positioning roller; 204. third motor; 205. first motor; 206. second positioning roller; 207. second motor; 208. stand; 209. lowering seat; 210. positioning seat; 211. guide rod; 212. spring; 213. rising seat; 214. guide block; 215. film cutting knife; 216. driven rack; 217. driving gear; 3. conveyor belt; 4. guide mechanism; 401. bidirectional screw; 402. adjusting hand wheel; 403. slider; 404. guide plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3The utility model provides a technical solution: a packaging bag film cutting device, including a base 1, a conveyor belt 3 is provided on one side of the top of the base 1, a positioning film cutting mechanism 2 is provided on one side of the conveyor belt 3, and a guide mechanism 4 is provided on the top of the conveyor belt 3. The film of the packaging bag can be conveyed by the conveyor belt 3, and then the positioning film cutting mechanism 2 is used to pull out the required length and straighten the film. At the same time, the film cutting position is pressed and positioned when cutting the film to prevent the film from shifting, thereby effectively improving the film cutting effect.

[0025] The positioning and film cutting mechanism 2 includes a film cutting seat 201, one side of the film cutting seat 201 is provided with two first positioning rollers 203, the two first positioning rollers 203 are transmission-connected, a support frame is fixedly connected to the base 1, the support frame is arranged between the film cutting seat 201 and the conveyor belt 3, the two first positioning rollers 203 are rotationally connected to the support frame, and the two first positioning rollers 203 are transmission-connected through a first gear pair, one end of a first positioning roller 203 is fixedly connected to a first motor 205, so that the first motor 205 can simultaneously drive the two first positioning rollers 203 to rotate in opposite directions, so that the required length of film can be delivered to the film cutting seat 201, and a second positioning roller 206 is provided on the other side of the film cutting seat 201, and the end of the second positioning roller 206 is fixedly connected to a second The motor 207 can drive the second positioning roller 206 to rotate through the second motor 207. The second positioning roller 206 rotates to straighten the film and can send out the cut film. The film cutting seat 201 is fixedly connected with two upright frames 208. The two upright frames 208 are arranged between the first positioning roller 203 and the second positioning roller 206. The two upright frames 208 are symmetrically arranged on both sides of the film cutting seat 201, so that the straightened film can be cut. A lower seat 209 is slidably connected between the two upright frames 208. A rising seat 213 is provided at the bottom of the lower seat 209. A film cutting knife 215 is fixedly connected to the top surface of the rising seat 213. A guide rod 211 is slidably connected inside the lower seat 209. A spring 212 is provided on the guide rod 211. The positioning seat 210 is connected by the guide rod 211 is slidably connected with the lower moving seat 209, and the spring 212 is arranged between the lower moving seat 209 and the positioning seat 210, so that the positioning seat 210 can press the films on both sides of the film cutting position to prevent deviation. The end of the guide rod 211 is fixedly connected with the positioning seat 210, and the lower moving seat 209 and the rising seat 213 are fixedly connected with guide blocks 214 at both ends. The lower moving seat 209 is slidably connected with the stand 208 through the guide block 214, and the rising seat 213 is slidably connected with the inner wall of the film cutting seat 201 through the guide block 214, which can guide the movement of the rising seat 213 and the lower moving seat 209. A driven rack 216 is fixedly connected to the guide block 214, and a driving gear 217 is arranged between each two adjacent driven racks 216. The ends of the two driving gears 217 The driving shaft 202 is transmission-connected to the third motor 204 at one side of the driving shaft 202, the driving gear 217 is meshed with the driven racks 216 on both sides, the driving gear 217 is transmission-connected to the driving shaft 202 through the second gear pair, the driving shaft 202 is transmission-connected to the output shaft end of the third motor 204 through the third gear pair, so that the third motor 204 can drive the driving shaft 202 to rotate, the driving shaft 202 can drive the driving gear 217 to rotate, and the film can be sent to the two first positioning rollers 203 through the conveyor belt 3, the first motor 205 drives the two first positioning rollers 203 to rotate in opposite directions, the first positioning roller 203 sends the film to the film cutting seat 201, and then the second motor 207 drives the second positioning roller 206 to rotate,The second positioning roller 206 rotates to straighten the film, and then the third motor 204 drives the driving shaft 202 to rotate, the driving shaft 202 rotates to drive the driving gear 217 to rotate, the driving gear 217 rotates to drive the driven rack 216 to move, the driven rack 216 moves to drive the guide block 214 to move, the guide block 214 moves to drive the lower seat 209 to move down and the rising seat 213 to move up, the lower seat 209 drives the positioning seat 210 to press the film at the film cutting position, the rising seat 213 moves to drive the film cutting knife 215 to move, and the film cutting operation is performed, so that the required length can be pulled out and the film is straightened. At the same time, the film cutting position is pressed and positioned when the film is cut to prevent the film from deviating, thereby effectively improving the film cutting effect.

[0026] See also Figure 1 and Figure 4 The guide mechanism 4 includes a guide frame, which is arranged on the outside of the conveyor belt 3. A bidirectional screw 401 is rotatably connected inside the guide frame. An adjusting hand wheel 402 is fixedly connected to the end of the bidirectional screw 401. The bidirectional screw 401 is provided with two sections of threads in opposite directions, so that the bidirectional screw 401 can drive two sliders 403 to move toward or away from each other. Two sliders 403 are threadedly connected to the bidirectional screw 401. The bottom ends of the two sliders 403 are fixedly connected with guide plates 404. The adjusting hand wheel 402 can be rotated to drive the bidirectional screw 401 to rotate, and the rotation of the adjusting hand wheel 402 drives the two-way screw 401 to rotate. The rotation of the bidirectional screw 401 drives the two sliders 403 to move. The movement of the slider 403 drives the guide plates 404 to move toward each other, and the spacing is adjusted, so that it can guide films of different widths and prevent deviation during the movement.

[0027] During operation, the conveyor belt 3 delivers the film to the two first positioning rollers 203, and the first motor 205 drives the two first positioning rollers 203 to rotate in opposite directions. The first positioning roller 203 delivers the film to the film cutting seat 201, and then the second motor 207 drives the second positioning roller 206 to rotate, and the second positioning roller 206 rotates to straighten the film, and then the third motor 204 drives the driving shaft 202 to rotate, and the driving shaft 202 rotates to drive the driving gear 217 to rotate, and the driving gear 217 rotates to drive the driven rack 216 to move, and the driven rack 216 moves to drive the guide block 214 to move, and the guide block 214 moves to drive the lower seat 209 to move down and the rising seat 213 to move up, and the lower seat 209 drives the positioning seat 210 to press the film at the film cutting position, and the rising seat 213 moves to drive the film cutting knife 215 to move, so as to perform the film cutting operation, so that the required length can be pulled out and the film can be straightened. At the same time, the film cutting position is pressed and positioned when the film is cut to prevent the film from shifting, thereby effectively improving the film cutting effect.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A packaging bag film cutting device, comprising a base (1), characterized in that: A conveyor belt (3) is provided on one side of the top of the base (1), a positioning film cutting mechanism (2) is provided on one side of the conveyor belt (3), and a guide mechanism (4) is provided on the top of the conveyor belt (3); The positioning film cutting mechanism (2) comprises a film cutting seat (201), one side of the film cutting seat (201) is provided with two first positioning rollers (203), the two first positioning rollers (203) are transmission-connected to each other, one end of the first positioning roller (203) is fixedly connected to a first motor (205), the other side of the film cutting seat (201) is provided with a second positioning roller (206), the end of the second positioning roller (206) is fixedly connected to a second motor (207), the film cutting seat (201) is fixedly connected with two vertical frames (208), a lowering seat (209) is slidably connected between the two vertical frames (208), a rising seat (213) is provided at the bottom of the lowering seat (209), and the rising seat (213) A film cutting knife (215) is fixedly connected to the top surface, a guide rod (211) is slidably connected inside the lower seat (209), a spring (212) is provided on the guide rod (211), a positioning seat (210) is fixedly connected to the end of the guide rod (211), both ends of the lower seat (209) and the rising seat (213) are fixedly connected to guide blocks (214), a driven rack (216) is fixedly connected to the guide block (214), a driving gear (217) is provided between every two adjacent driven racks (216), the ends of the two driving gears (217) are transmission-connected to a drive shaft (202), and one side of the drive shaft (202) is transmission-connected to a third motor (204).

2. A packaging bag film cutting device according to claim 1, characterized in that: A support frame is fixedly connected to the base (1), and the support frame is arranged between the film cutting seat (201) and the conveyor belt (3). The two first positioning rollers (203) are rotatably connected to the support frame, and the two first positioning rollers (203) are transmission-connected via a first gear pair.

3. The packaging bag film cutting device according to claim 1, characterized in that: The two stands (208) are arranged between the first positioning roller (203) and the second positioning roller (206), and the two stands (208) are symmetrically arranged on both sides of the film cutting seat (201).

4. The packaging bag film cutting device according to claim 1, characterized in that: The downward moving seat (209) is slidably connected to the vertical frame (208) via a guide block (214), and the upward moving seat (213) is slidably connected to the inner wall of the film cutting seat (201) via a guide block (214).

5. The packaging bag film cutting device according to claim 1, characterized in that: The positioning seat (210) is slidably connected to the downward moving seat (209) via a guide rod (211), and the spring (212) is arranged between the downward moving seat (209) and the positioning seat (210).

6. The packaging bag film cutting device according to claim 1, characterized in that: The driving gear (217) is meshed with the driven racks (216) on both sides, the driving gear (217) is transmission-connected to the driving shaft (202) via a second gear pair, and the driving shaft (202) is transmission-connected to the output shaft end of the third motor (204) via a third gear pair.

7. The packaging bag film cutting device according to claim 1, characterized in that: The guide mechanism (4) comprises a guide frame, which is arranged outside the conveyor belt (3). A bidirectional screw rod (401) is rotatably connected inside the guide frame, and an adjustment hand wheel (402) is fixedly connected to the end of the bidirectional screw rod (401).

8. The packaging bag film cutting device according to claim 7, characterized in that: The bidirectional screw (401) is provided with two sections of threads in opposite directions. Two sliders (403) are threadedly connected to the bidirectional screw (401). The bottom ends of the two sliders (403) are fixedly connected to guide plates (404).

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