PE bag edge sealing device

Abstract

The utility model discloses a PE bag edge sealing device, which belongs to the technical field of edge sealing, and comprises a base, a heating plate is fixedly arranged at the center of the top end of the base, a support frame is fixedly arranged at the top end of the base, the support frame is U-shaped, air cylinders are symmetrically and fixedly arranged at the top end of the inner wall of the support frame, and a support plate is fixedly arranged at the output end of each air cylinder. A positioning assembly is installed at the bottom end of the supporting plate, first side plates are symmetrically and fixedly installed at the bottom end of the supporting plate, a supporting column is rotatably installed between the two first side plates, a plurality of extrusion strips are fixedly installed on the outer side of the supporting column through supporting rods, the multiple extrusion strips are annularly arranged with the supporting column as the axis, and the widths of the extrusion strips are sequentially increased. According to the PE bag edge sealing device, before machining, PE bags of different sizes can be rapidly fixed, the edge sealing width can be adjusted according to requirements, the edge sealing width and cutting are synchronously carried out, and therefore the practicability and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of edge sealing, and particularly relates to a PE bag edge sealing device. Background Art

[0002] At present, PE is the abbreviation of polyethylene, which is a thermoplastic resin obtained by polymerizing ethylene. It can be used for packaging clothing, luggage, electronic products, etc. It has excellent low-temperature resistance and good chemical stability. During the processing of PE bags, the bags need to be edge-sealed, which requires the use of an edge-sealing device.

[0003] In the prior art, an edge-sealing device for PE bag processing with the application number CN202321699185.0 includes a support frame. Four upper parts of the support frames are fixedly connected with a fixed plate. The upper left side of the fixed plate is fixedly connected with a support. The upper part of the support is fixedly connected with a first electric push rod. The output end of the first electric push rod is fixedly connected with a support frame. A pressing roller is rotatably connected to the middle of the support frame. The upper rear side of the fixed plate is fixedly connected with a fixed frame. The upper part of the fixed frame is fixedly connected with a second electric push rod. Both sides inside the fixed frame are slidably connected with sliders. The right side inside the fixed frame is fixedly connected with a fixed rod. A cutting knife is fixedly connected between the two sliders. In the utility model, the edge-sealing device for PE bag processing can cut the edge-sealed PE bags, improve the processing efficiency of PE bags, reduce the labor intensity of workers, and thus make the use effect of the edge-sealing device for PE bag processing better.

[0004] However, in the above-mentioned prior art solution, since the pressing roller can only move up and down and cannot move horizontally, when edge-sealing, it is necessary to hold the PE bag and move it to cooperate with the pressing roller for edge-sealing. Moreover, the required edge-sealing width for PE bags of different sizes is also different and cannot be adjusted. And it needs to be carried out in two steps with the cutting equipment, which is rather cumbersome and has low practicability. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a PE bag edge-sealing device, aiming to improve the problem that when edge-sealing, it is necessary to hold the PE bag and move it to cooperate with the pressing roller for edge-sealing, and the required edge-sealing width for PE bags of different sizes is also different and cannot be adjusted, and it needs to be carried out in two steps with the cutting equipment, which is rather cumbersome and has low practicability.

[0006] The present utility model is realized as follows: A PE bag edge-sealing device includes a base. At the center of the top end of the base, a heating plate is fixedly installed. A support frame is fixedly installed at the top end of the base. The support frame is U-shaped, and cylinders are symmetrically and fixedly installed at the top end of the inner wall. The output end of the cylinder is fixedly installed with a support plate. A positioning component is installed at the bottom end of the support plate. First side plates are symmetrically and fixedly installed at the bottom end of the support plate. A support column is rotatably installed between the two first side plates. A plurality of extrusion strips are fixedly installed on the outside of the support column through support rods. The plurality of extrusion strips are annularly arranged with the support column as the axis and their widths increase in sequence. An adjustment component is installed at one end of the support column. A cutting component is installed at one side of the top end of the base.

[0007] In a preferred technical solution of the present utility model, the support frame is arranged at the center of the top end of the base, the heating plate is arranged directly below the support frame, the support plate is slidably connected to the inner wall of the support frame. A groove matching the heating plate is provided at the top end of the base, and the heating plate is fixedly installed in the groove. The top end of the heating plate is on the same plane as the top end of the base. Scales are symmetrically arranged at the top end of the base 110, and the scales are symmetrically arranged on both sides of the heating plate 1101. The scales are in a printed pattern.

[0008] In a preferred technical solution of the present utility model, the adjustment component includes a servo motor, a worm gear, and a worm. A first rotating shaft is rotatably installed at the bottom end of the support plate. The servo motor is fixedly installed at the top end of the first rotating shaft. The worm is fixedly sleeved on the outside of the first rotating shaft. A second rotating shaft is fixedly installed at one end of the support column. One end of the second rotating shaft slidably penetrates through the first side plate and fixedly installs the worm gear. The worm gear and the worm are in transmission connection. The servo motor is fixedly installed at the top end of the support plate, and the output end of the servo motor penetrates through the support plate and is fixedly connected to the top end of the first rotating shaft.

[0009] In a preferred technical solution of the present utility model, the positioning component includes a sliding plate and a positioning strip. Brackets are symmetrically and fixedly installed on both sides of the support plate respectively. The brackets are L-shaped. A bidirectional threaded rod and a first guide rod are rotatably installed between the brackets on both sides respectively. The sliding plate is symmetrically threadedly installed on the bidirectional threaded rod and symmetrically slidably installed on the first guide rod. Elastic telescopic rods are symmetrically and fixedly installed at the top end of the sliding plate. The output end of the elastic telescopic rod penetrates through the sliding plate and fixedly installs the positioning strip. When not affected by external forces, the height of the positioning strip is lower than the height of the extrusion strip. Anti-slip pads are fixedly installed at the bottom end of the extrusion strip. The extrusion strips are symmetrically arranged on both sides of the heating plate.

[0010] In the preferred technical solution of the present utility model, the threads on the bidirectional threaded rod are symmetrically arranged about the center. One end of the bidirectional threaded rod is fixedly installed with a third rotating shaft, and one end of the third rotating shaft penetrates through the bracket and is fixedly installed with a first turntable. The bidirectional threaded rod and the first guide rod are symmetrically arranged.

[0011] In the preferred technical solution of the present utility model, the elastic telescopic rod includes a sleeve rod and a pull rod. The top end of the sliding plate is fixedly installed with the sleeve rod, the bottom end of the sleeve rod is slidably sleeved with the pull rod, the top end of the inner wall of the sleeve rod is fixedly installed with a first spring, the bottom end of the first spring is fixedly connected to the pull rod, and the bottom end of the pull rod slidably penetrates through the sliding plate and is fixedly installed with the positioning strip.

[0012] In the preferred technical solution of the present utility model, the cutting assembly includes a tool rest, a blade and a top plate. The tool rest is slidably installed at the top end of the base. The tool rest is U-shaped. Second springs are symmetrically and fixedly installed at the top end of the tool rest. The top end of the second springs is fixedly installed with the top plate. The blade is fixedly installed at the bottom end of the top plate. The bottom end of the blade slidably penetrates through the tool rest. When the bidirectional threaded rod and the first guide rod move downward and abut against the top plate, the top plate is driven to move downward until the blade cuts the PE bag.

[0013] In the preferred technical solution of the present utility model, second guide rods are symmetrically and fixedly installed on both sides of the bottom end of the top plate. The bottom ends of the second guide rods slidably penetrate through the top end of the tool rest. Circular grooves matching the second guide rods are arranged on both sides of the top end of the tool rest. The second guide rods are slidably connected to the inner walls of the circular grooves.

[0014] In the preferred technical solution of the present utility model, chutes matching the bottom ends of the tool rest are symmetrically arranged at the top end of the base. A first threaded rod is rotatably installed between the inner walls on both sides of the chute. The two ends of the tool rest are respectively threadedly installed on the two first threaded rods. One end of the first threaded rod is fixedly installed with a fourth rotating shaft. One end of the fourth rotating shaft penetrates through the base and is fixedly installed with a first bevel gear. Second side plates are symmetrically and fixedly installed on one side of the base. A fifth rotating shaft is rotatably installed between the two second side plates. Second bevel gears are symmetrically and fixedly installed on the fifth rotating shaft. The first bevel gear is meshed with the adjacent second bevel gear. One end of the fifth rotating shaft penetrates through the second side plate and is fixedly installed with a second turntable. The tool rest is slidably connected to the inner wall of the chute. The two first threaded rods are symmetrically arranged. That is, when the two first threaded rods rotate relatively, the tool rest is driven to move synchronously and in the same direction.

[0015] The beneficial effects of the present utility model are as follows: A PE bag edge-sealing device obtained through the above design in the present utility model. 1. Rotate the first turntable according to the size of the PE bag. The first turntable drives the bidirectional threaded rod to rotate through the third rotating shaft. The rotation of the bidirectional threaded rod drives the two sliding plates to move relatively, thereby adjusting a suitable fixing position, and thus the PE bags of different sizes can be fixed according to requirements to prevent deviation during edge-sealing and cutting. 2. Start the servo motor at the same time to drive the first rotating shaft to rotate. The rotation of the first rotating shaft drives the support column to rotate through the cooperation of the worm, the worm gear and the second rotating shaft to select an extrusion strip with a suitable width, and the suitable edge-sealing width can be adjusted for PE bags of different sizes, thereby improving the practicability. 3. Finally, rotate the second turntable to drive the fifth rotating shaft to rotate. The rotation of the fifth rotating shaft drives the two first threaded rods to rotate relatively through the cooperation of the first bevel gear, the second bevel gear and the fourth rotating shaft. The rotation of the first threaded rod drives the tool rest to move to adjust the cutting position. Finally, only need to place the PE bag on the base, and place the edge-sealing part on the heating plate. Start the air cylinder to drive the support plate to move downward. The downward movement of the support plate drives the positioning strip to move downward to first squeeze and fix the PE bag. During the continuous downward movement of the support plate, the extrusion strip is driven to press on the PE bag on the heating plate for edge-sealing. At the same time, the first guide rod and the bidirectional threaded rod move downward to abut against and press down the top plate to drive it to move downward. The downward movement of the top plate drives the blade to move downward to cut the redundant part at the edge-sealing part of the PE bag, which is convenient for edge-sealing and cutting to be carried out simultaneously, thereby improving the practicability and working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural diagram of a PE bag edge-sealing device provided by an embodiment of the present utility model;

[0018] Figure 2 is a partial structural diagram of a PE bag edge-sealing device provided by an embodiment of the present utility model;

[0019] Figure 3 is Figure 2 the enlarged view at A in

[0020] Figure 4 is a schematic structural diagram of the support column and the extrusion strip provided by an embodiment of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the cutting assembly provided by an embodiment of the present utility model;

[0022] Figure 6 This figure provides an internal view of the tool rest for the embodiments of the present utility model.

[0023] In the figure: 110 - base; 1101 - heating plate; 111 - support frame; 112 - cylinder; 120 - support plate; 121 - first side plate; 122 - support column; 123 - support rod; 124 - extrusion strip; 125 - servo motor; 126 - worm gear; 127 - worm; 128 - first rotating shaft; 130 - sliding plate; 131 - positioning strip; 132 - bracket; 133 - bidirectional threaded rod; 134 - first guide rod; 135 - elastic telescopic rod; 136 - first turntable; 140 - tool rest; 141 - blade; 142 - top plate; 143 - second spring; 144 - second guide rod; 145 - first threaded rod; 146 - fourth rotating shaft; 147 - second side plate; 148 - fifth rotating shaft; 149 - second turntable. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , the present utility model provides a technical solution: a PE bag edge sealing device, including a base 110, a heating plate 1101 is fixedly installed at the center of the top end of the base 110, a support frame 111 is arranged at the center of the top end of the base 110, the heating plate 1101 is arranged directly below the support frame 111, a support plate 120 is slidably connected to the inner wall of the support frame 111, a groove matching the heating plate 1101 is arranged at the top end of the base 110, the heating plate 1101 is fixedly installed in the groove, the top end of the heating plate 1101 and the top end of the base 110 are on the same plane. A support frame 111 is fixedly installed at the top end of the base 110. The support frame 111 is U-shaped and symmetrically fixed with cylinders 112 at the top end of the inner wall. The output end of the cylinder 112 is fixedly installed with a support plate 120. A positioning component is installed at the bottom end of the support plate 120. First side plates 121 are symmetrically and fixedly installed at the bottom end of the support plate 120. A support column 122 is rotatably installed between the two first side plates 121. A plurality of extrusion strips 124 are fixedly installed on the outside of the support column 122 through support rods 123. The plurality of extrusion strips 124 are arranged in a ring with the support column 122 as the axis and the width increases in sequence. One end of the support column 122 is equipped with an adjustment component. A cutting component is installed on one side of the top end of the base 110.

[0026] In some specific embodiments, the support frame 111 is disposed at the center of the top end of the base 110. The heating plate 1101 is disposed directly below the support frame 111. The support plate 120 is slidably connected to the inner wall of the support frame 111. A groove matching the heating plate 1101 is provided at the top end of the base 110. The heating plate 1101 is fixedly installed in the groove. The top end of the heating plate 1101 is in the same plane as the top end of the base 110. Scales are symmetrically provided at the top end of the base 110 and symmetrically on both sides of the heating plate 1101, facilitating the placement of the PE bag flat to prevent tilting and improving the accuracy during edge sealing and cutting.

[0027] Please refer to Figures 2 - 4 , the adjusting assembly includes a servo motor 125, a worm gear 126 and a worm 127. A first rotating shaft 128 is rotatably installed at the bottom end of the support plate 120. The servo motor 125 is fixedly installed at the top end of the first rotating shaft 128. The worm 127 is fixedly sleeved on the outer side of the first rotating shaft 128. One end of the support column 122 is fixedly installed with a second rotating shaft. One end of the second rotating shaft slidably penetrates through the first side plate 121 and is fixedly installed with the worm gear 126. The worm gear 126 and the worm 127 are in transmission connection. The servo motor 125 is fixedly installed at the top end of the support plate 120. The output end of the servo motor 125 penetrates through the support plate 120 and is fixedly connected to the top end of the first rotating shaft 128. The positioning assembly includes a sliding plate 130 and a positioning strip 131. Brackets 132 are symmetrically and fixedly installed on both sides of the support plate 120. The brackets 132 are L-shaped. A bidirectional threaded rod 133 and a first guide rod 134 are respectively rotatably installed between the brackets 132 on both sides. The sliding plate 130 is symmetrically threadedly installed on the bidirectional threaded rod 133 and symmetrically slidably installed on the first guide rod 134. Elastic telescopic rods 135 are symmetrically fixedly installed at the top end of the sliding plate 130. The output ends of the elastic telescopic rods 135 penetrate through the sliding plate 130 and are fixedly installed with the positioning strip 131. When not under external force, the height of the positioning strip 131 is lower than the height of the extrusion strip 124. An anti-slip pad is fixedly installed at the bottom end of the extrusion strip 124. The extrusion strips 124 are symmetrically provided on both sides of the heating plate 1101. The threads on the bidirectional threaded rod 133 are centrally symmetrically arranged. One end of the bidirectional threaded rod 133 is fixedly installed with a third rotating shaft. One end of the third rotating shaft penetrates through the bracket 132 and is fixedly installed with a first turntable 136. The bidirectional threaded rod 133 and the first guide rod 134 are symmetrically arranged.

[0028] In some specific embodiments, the elastic telescopic rod 135 includes a sleeve rod and a pull rod. The sleeve rod is fixedly installed at the top end of the sliding plate 130. The pull rod is slidably sleeved at the bottom end of the sleeve rod. A first spring is fixedly installed at the top end of the inner wall of the sleeve rod. The bottom end of the first spring is fixedly connected to the pull rod. The bottom end of the pull rod slidably penetrates through the sliding plate 130 and is fixedly installed with the positioning strip 131. The cooperation of the sleeve rod, the pull rod and the first spring allows the positioning strip 131 to continue to move downward after the PE bag is fixed by the support plate 120, thereby fixing the PE bag before edge sealing and cutting, and thus improving the stability during processing.

[0029] Please refer to Figure 5 and Figure 6 , the cutting assembly includes a tool holder 140, a blade 141 and a top plate 142. The tool holder 140 is slidably mounted on the top end of the base 110. The tool holder 140 is U-shaped. Second springs 143 are symmetrically and fixedly mounted at the top end of the tool holder 140. The top plate 142 is fixedly mounted at the top ends of the second springs 143. The blade 141 is fixedly mounted at the bottom end of the top plate 142. The bottom end of the blade 141 slidably penetrates through the tool holder 140. When the bidirectional threaded rod 133 and the first guide rod 134 move downward and abut against the top plate 142, the top plate 142 is driven to move downward so that the blade 141 cuts the PE bag.

[0030] In some specific embodiments, second guide rods 144 are symmetrically and fixedly mounted on both sides of the bottom end of the top plate 142. The bottom ends of the second guide rods 144 slidably penetrate through the top end of the tool holder 140. Circular grooves matching the second guide rods 144 are provided on both sides of the top end of the tool holder 140. The second guide rods 144 are slidably connected to the inner walls of the circular grooves to limit the sliding of the top plate 142, effectively preventing damage caused by deviation during long-term use.

[0031] In some specific embodiments, chutes matching the bottom end of the tool holder 140 are symmetrically provided at the top end of the base 110. A first threaded rod 145 is rotatably mounted between the inner walls on both sides of the chute. The two ends of the tool holder 140 are respectively threadedly mounted on the two first threaded rods 145. A fourth rotating shaft 146 is fixedly mounted at one end of the first threaded rod 145. One end of the fourth rotating shaft 146 penetrates through the base 110 and is fixedly mounted with a first bevel gear. Second side plates 147 are symmetrically and fixedly mounted on one side of the base 110. A fifth rotating shaft 148 is rotatably mounted between the two second side plates 147. Second bevel gears are symmetrically and fixedly mounted on the fifth rotating shaft 148. The first bevel gear is meshed with the adjacent second bevel gear. One end of the fifth rotating shaft 148 penetrates through the second side plate 147 and is fixedly mounted with a second turntable 149. The tool holder 140 is slidably connected to the inner wall of the chute. The two first threaded rods 145 are symmetrically arranged. When the two first threaded rods 145 rotate relatively, the tool holder 140 is driven to move synchronously and in the same direction, facilitating the quick adjustment of the tool holder 140 and suitable for cutting at different positions, thereby improving the practicability.

[0032] Working principle: When in use, rotate the first turntable 136 according to the size of the PE bag. The first turntable 136 drives the bidirectional threaded rod 133 to rotate through the third rotating shaft. The rotation of the bidirectional threaded rod 133 drives the two sliding plates 130 to move relatively so as to adjust the appropriate fixing position. At the same time, start the servo motor 125 to drive the first rotating shaft 128 to rotate. The rotation of the first rotating shaft 128 drives the support column 122 to rotate through the cooperation of the worm 127, the worm gear 126 and the second rotating shaft to select the extrusion strip 124 with an appropriate width. Finally, rotate the second turntable 149 to drive the fifth rotating shaft 148 to rotate. The rotation of the fifth rotating shaft 148 drives the two first threaded rods 145 to rotate relatively through the cooperation of the first bevel gear, the second bevel gear and the fourth rotating shaft 146. The rotation of the first threaded rod 145 drives the tool rest 140 to move to adjust the cutting position. Finally, just place the PE bag on the base 110, and place the edge-sealing part on the heating plate 1101. Start the cylinder 112 to drive the support plate 120 to move downward. The downward movement of the support plate 120 drives the positioning strip 131 to move downward to first extrude and fix the PE bag. During the continuous downward movement of the support plate 120, the extrusion strip 124 is driven to press on the PE bag on the heating plate 1101 for edge-sealing. At the same time, the first guide rod 134 and the bidirectional threaded rod 133 move downward to abut against and press down the top plate 142 to drive it to move downward. The downward movement of the top plate 142 drives the blade 141 to move downward to cut the redundant part at the edge-sealing part of the PE bag.

[0033] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A PE bag edge sealing device, comprising a base, characterized in that: A heating plate is fixedly installed at the center of the top of the base, a support frame is fixedly installed on the top of the base, the support frame is U-shaped and a cylinder is symmetrically fixedly installed on the top of the inner wall, a support plate is fixedly installed on the output end of the cylinder, a positioning assembly is installed on the bottom end of the support plate, a first side plate is symmetrically fixedly installed on the bottom end of the support plate, a support column is rotatably installed between the two first side plates, a plurality of extrusion strips are fixedly installed on the outside of the support column through a support rod, the plurality of extrusion strips are arranged in a ring with the support column as the axis and the widths increase sequentially, an adjustment assembly is installed on one end of the support column, and a cutting assembly is installed on one side of the top end of the base.

2. A PE bag edge sealing device according to claim 1, characterized in that: The support frame is arranged at the center of the top end of the base, the heating plate is arranged directly below the support frame, and the support plate is slidably connected to the inner wall of the support frame.

3. A PE bag edge sealing device according to claim 1, characterized in that: The adjustment assembly includes a servo motor, a worm wheel and a worm. The first rotating shaft is rotatably installed at the bottom end of the support plate, the servo motor is fixedly installed at the top end of the first rotating shaft, the worm is fixedly sleeved on the outer side of the first rotating shaft, a second rotating shaft is fixedly installed at one end of the support column, one end of the second rotating shaft slides through the first side plate and fixedly installs the worm wheel, and the worm wheel and the worm are drivingly connected.

4. A PE bag edge sealing device according to claim 1, characterized in that: The positioning assembly includes a slide plate and a positioning bar, and brackets are symmetrically fixedly installed on both sides of the support plate, and the brackets are L-shaped. A two-way threaded rod is rotatably installed and a first guide rod is fixedly installed between the brackets on both sides. The slide plate is symmetrically threaded on the two-way threaded rod and symmetrically slidably installed on the first guide rod. An elastic telescopic rod is symmetrically fixedly installed on the top of the slide plate, and the output end of the elastic telescopic rod passes through the slide plate and is fixedly installed on the positioning bar.

5. A PE bag edge sealing device according to claim 4, characterized in that: The threads on the bidirectional threaded rod are centrally symmetrically arranged, one end of the bidirectional threaded rod is fixedly mounted with a third rotating shaft, and one end of the third rotating shaft passes through the bracket and is fixedly mounted with the first rotating disk.

6. A PE bag edge sealing device according to claim 4, characterized in that: The elastic telescopic rod includes a sleeve rod and a pull rod. The sleeve rod is fixedly installed on the top of the slide board, and the bottom end of the sleeve rod is slidably sleeved on the pull rod. A first spring is fixedly installed on the top of the inner wall of the sleeve rod, and the bottom end of the first spring is fixedly connected to the pull rod. The bottom end of the pull rod slides through the slide board and fixedly installs the positioning strip.

7. A PE bag edge sealing device according to claim 4, characterized in that: The cutting assembly includes a tool holder, a blade and a top plate. The tool holder is slidably mounted on the top of the base. The tool holder is U-shaped. A second spring is symmetrically fixedly mounted on the top of the tool holder. The top plate is fixedly mounted on the top of the second spring. The blade is fixedly mounted on the bottom of the top plate. The bottom end of the blade slides through the tool holder. When the bidirectional threaded rod and the first guide rod move downward, they abut against the top plate and drive it to move downward to the blade to cut the PE bag.

8. A PE bag edge sealing device according to claim 7, characterized in that: Second guide rods are symmetrically fixedly installed on both sides of the bottom end of the top plate, and the bottom ends of the second guide rods slide through the top end of the tool holder.

9. A PE bag edge sealing device according to claim 7, characterized in that: The top of the base is symmetrically provided with a sliding groove that cooperates with the bottom of the tool holder, and a first threaded rod is rotatably installed between the two sides of the inner wall of the sliding groove, and the two ends of the tool holder are respectively threadedly installed on the two first threaded rods, and one end of the first threaded rod is fixedly installed with a fourth rotating shaft, one end of the fourth rotating shaft passes through the base and fixedly installed with the first bevel gear, a second side plate is symmetrically fixedly installed on one side of the base, a fifth rotating shaft is rotatably installed between the two second side plates, and a second bevel gear is symmetrically fixedly installed on the fifth rotating shaft, the first bevel gear is meshed and connected with the adjacent second bevel gear, and one end of the fifth rotating shaft passes through the second side plate and fixedly installed on the second turntable.

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