A PE blown film machine edge cutting and film separating mechanism

Abstract

This utility model discloses a cutting and separating mechanism for a PE blown film machine, belonging to the technical field of PE blown film machines. It includes a support frame, a cutting roller, a cutting mechanism, and a waste edge winding mechanism. The cutting roller is rotatably mounted on the support frame, and its surface has several evenly distributed cutting edges. The cutting mechanism includes two cutters symmetrically arranged above the cutting roller and an adjustment component for adjusting the cutter position. The adjustment component includes a bidirectional screw rotatably mounted on the support frame and a first motor for driving the bidirectional screw to rotate. Two symmetrically distributed adjustment seats are threaded onto the bidirectional screw. A cylinder is fixedly mounted on the top of each adjustment seat, and a connecting seat is fixedly connected to the lower end of the cylinder. The cutter is detachably mounted on the connecting seat. The adjustment component facilitates the adjustment of the cutter position, improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of PE blown film machines, specifically relating to a cutting and separating mechanism for a PE blown film machine. Background Technology

[0002] PE film has a wide range of applications in the food, pharmaceutical and other fields. It is mainly made by feeding plastic particles into a blown film machine, heating them first by the heating device in the blown film machine, and then blowing them into a cylindrical long bag shape. After that, it is cut from double layer to single layer before being used.

[0003] Chinese Patent CN209682902U discloses a cutting and separating mechanism for a PE blown film machine. The mechanism includes a support rod fixed to a frame, a cutting blade fixed to the support rod, and a cutting roller fixed to the frame and located below the support rod. Numerous blades are distributed along the length of the circumferential sidewall of the cutting roller. The cutting blade's head is embedded within these blades, and a cutting opening is formed between the cutting blade and the cutting roller. The cutting blade is fixed to the support rod via a connecting assembly. When the cutting blade's position needs to be fixed, a drive bolt is turned, causing it to press against an extrusion plate through a drive threaded hole. As the drive bolt continues to penetrate deeper into the drive threaded hole, it compresses the extrusion plate, causing it to deform and providing driving force to an elastic clamping member. This allows the elastic clamping member to press against the support rod.

[0004] Regarding the aforementioned technologies, the inventors have discovered at least the following problems: In the aforementioned technologies, when dealing with PE films of different widths, it is necessary to adjust the position of the cutting blade. When adjusting the position of the cutting blade, it is necessary to manually turn the drive bolt to loosen the connecting block and then slide the connecting block along the support rod. After the position of the cutting blade is appropriate, the drive bolt is manually turned again to fix the connecting block. The whole operation is very cumbersome and affects work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a cutting and separating mechanism for a PE blown film machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PE blown film machine edge cutting and film separating mechanism, including a support, a cutting roller, an edge cutting mechanism and a waste edge winding mechanism, wherein the cutting roller is rotatably mounted on the support, and the surface of the cutting roller is provided with a plurality of evenly distributed blades, and the edge cutting mechanism includes two cutters symmetrically arranged above the cutting roller and an adjustment component for adjusting the position of the cutters;

[0007] The adjustment assembly includes a bidirectional screw rotatably mounted on a bracket and a first motor for driving the bidirectional screw to rotate. Two symmetrically distributed adjustment seats are threaded onto the bidirectional screw. A cylinder is fixedly mounted on the top of the adjustment seat, and a connecting seat is fixedly connected to the lower end of the cylinder. The cutter is detachably mounted on the connecting seat.

[0008] In a preferred embodiment, a guide rod parallel to the bidirectional screw is fixedly installed on the bracket, and the adjusting seat is slidably sleeved on the guide rod.

[0009] In a preferred embodiment, a guide post is fixedly connected to the top of the connecting seat, and the guide post slides through the adjusting seat.

[0010] In a preferred embodiment, a fastener is inserted into one side of the cutter, and the cutter is fixed to the connecting seat by the fastener.

[0011] In a preferred embodiment, the fastener is an internal hexagon bolt, which is threadedly connected to the connector.

[0012] In a preferred embodiment, the waste edge winding mechanism includes a winding rod rotatably mounted at the bottom of the support and a second motor for driving the winding rod to rotate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The edge trimming and film separating mechanism of this PE blown film machine, through the setting of the adjustment components, when adjusting the position of the cutter, firstly, the cylinder is started to drive the connecting seat to rise, so that the connecting seat drives the cutter to move out of the blade. Then, the first motor is started to drive the bidirectional screw to rotate. The bidirectional screw drives the two adjusting seats to move relative to each other or in opposite directions. After the cutter is adjusted to the appropriate position, the cylinder is started again to drive the connecting seat to fall, so that the connecting seat drives the cutter back into the blade. This facilitates the adjustment of the cutter and improves work efficiency.

[0015] The edge cutting and film separating mechanism of this PE blown film machine, through the setting of the waste edge winding mechanism, can wrap one end of the waste edge around the winding rod during edge cutting. During the edge cutting process, the second motor can be started to drive the winding rod to rotate, so that the winding rod can wind up the waste edge, making it easy to collect the waste edge. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the edge-cutting mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the cutter of this utility model.

[0019] In the diagram: 1. Support; 2. Cutting roller; 21. Blade; 3. Edge trimming mechanism; 31. Cutting blade; 32. Adjustment assembly; 321. Bidirectional screw; 322. First motor; 323. Adjustment seat; 324. Cylinder; 325. Connecting seat; 326. Guide rod; 327. Guide post; 33. Fastener; 4. Waste edge winding mechanism; 41. Winding rod; 42. Second motor. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please see Figure 1-3 This utility model provides a PE blown film machine edge cutting and film separating mechanism, including a support 1, a cutting roller 2, an edge cutting mechanism 3, and a waste edge winding mechanism 4. The cutting roller 2 is rotatably mounted on the support 1. The surface of the cutting roller 2 is provided with a plurality of evenly distributed blades 21. The edge cutting mechanism 3 includes two cutters 31 symmetrically arranged above the cutting roller 2 and an adjustment component 32 for adjusting the position of the cutters 31. With the setting of the edge cutting mechanism 3, when cutting the edge, according to the required width of the PE film to be cut, the position of the two cutters 31 is first adjusted by the adjustment component 32. Then, the two sides of the PE film are cut by the cooperation of the cutters 31 and the blades 21.

[0023] Specifically, the adjustment assembly 32 includes a bidirectional screw 321 rotatably mounted on the bracket 1 and a first motor 322 for driving the bidirectional screw 321 to rotate. Two symmetrically distributed adjustment seats 323 are threaded onto the bidirectional screw 321. A cylinder 324 is fixedly mounted on the top of each adjustment seat 323, and a connecting seat 325 is fixedly connected to the lower end of the cylinder 324. The cutter 31 is detachably mounted on the connecting seat 325. Through the configuration of the adjustment assembly 32, when adjusting the position of the cutter 31, the first motor is activated... The cylinder 324 drives the connecting seat 325 to rise, causing the connecting seat 325 to move the cutter 31 out of the cutting edge 21. Then, the first motor 322 is started to drive the bidirectional screw 321 to rotate. The bidirectional screw 321 drives the two adjusting seats 323 to move relative to each other or in opposite directions. After the cutter 31 is adjusted to the appropriate position, the cylinder 324 is started again to drive the connecting seat 325 to fall, causing the connecting seat 325 to move the cutter 31 into the cutting edge 21. This facilitates the adjustment of the cutter 31 and improves work efficiency.

[0024] The bracket 1 is fixedly installed with a guide rod 326 parallel to the bidirectional screw 321. The adjusting seat 323 is slidably sleeved on the guide rod 326. The guide rod 326 can guide the adjusting seat 323.

[0025] The top of the connecting seat 325 is fixedly connected to a guide post 327, which slides through the adjusting seat 323. The guide post 327 can guide the connecting seat 325.

[0026] Among them, a fastener 33 is inserted into one side of the cutter 31, and the cutter 31 is fixed to the connecting seat 325 by the fastener 33. The fastener 33 is an internal hex bolt, which is threadedly connected to the connecting seat 325.

[0027] Specifically, the waste edge winding mechanism 4 includes a winding rod 41 rotatably mounted at the bottom of the bracket 1 and a second motor 42 for driving the winding rod 41 to rotate. With the setting of the waste edge winding mechanism 4, one end of the waste edge can be wound around the winding rod 41 when cutting the edge. During the cutting process, the second motor 42 can be started to drive the winding rod 41 to rotate, so that the winding rod 41 can wind up the waste edge, which is convenient for collecting the waste edge.

[0028] The working principle and usage process of this utility model are as follows: First, when cutting the edge, the position of the two cutters 31 is adjusted by adjusting the component 32 according to the required width of the PE film to be cut. When adjusting the position of the cutter 31, the cylinder 324 is started to drive the connecting seat 325 to rise, so that the connecting seat 325 drives the cutter 31 to move out of the blade 21. Then, the first motor 322 is started to drive the bidirectional screw 321 to rotate. The bidirectional screw 321 drives the two adjusting seats 323 to move relative to each other or in opposite directions. After the cutter 31 is adjusted to a suitable position, the cylinder 324 is started to drive the connecting seat 325 to fall, so that the connecting seat 325 drives the cutter 31 to enter the blade 21. Then, the two sides of the PE film are cut by the cooperation of the cutter 31 and the blade 21. When cutting the edge, one end of the waste edge can be wound around the winding rod 41. During the cutting process, the second motor 42 can be started to drive the winding rod 41 to rotate, so that the winding rod 41 can wind up the waste edge.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trimming and separating mechanism of a PE film blowing machine, comprising a support (1), a cutting roller (2), a trimming mechanism (3) and a waste edge winding mechanism (4), characterized in that: The cutting roller (2) is rotatably mounted on the bracket (1). The surface of the cutting roller (2) is provided with a number of evenly distributed blades (21). The edge cutting mechanism (3) includes two cutters (31) symmetrically arranged above the cutting roller (2) and an adjustment component (32) for adjusting the position of the cutters (31). The adjustment assembly (32) includes a bidirectional screw (321) rotatably mounted on a bracket (1) and a first motor (322) for driving the bidirectional screw (321) to rotate. Two symmetrically distributed adjustment seats (323) are threaded onto the bidirectional screw (321). A cylinder (324) is fixedly mounted on the top of the adjustment seat (323). A connecting seat (325) is fixedly connected to the lower end of the cylinder (324). The cutter (31) is detachably mounted on the connecting seat (325).

2. The edge cutting and separating mechanism of a PE film blowing machine according to claim 1, characterized in that: A guide rod (326) parallel to the bidirectional screw (321) is fixedly installed on the bracket (1), and the adjusting seat (323) is slidably sleeved on the guide rod (326).

3. The edge cutting and separating mechanism of a PE film blowing machine according to claim 1, characterized in that: The top of the connecting seat (325) is fixedly connected to a guide post (327), and the guide post (327) slides through the adjusting seat (323).

4. The edge cutting and separating mechanism of a PE film blowing machine according to claim 1, characterized in that: A fastener (33) is inserted into one side of the cutter (31), and the cutter (31) is fixed to the connecting seat (325) by the fastener (33).

5. The edge trimming and separating mechanism of a PE blown film machine according to claim 4, characterized in that: The fastener (33) is an internal hex bolt, which is threaded to the connecting seat (325).

6. The edge cutting and separating mechanism of a PE film blowing machine according to claim 1, characterized in that: The waste edge winding mechanism (4) includes a winding rod (41) rotatably mounted at the bottom of the bracket (1) and a second motor (42) for driving the winding rod (41) to rotate.

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