Fixed-distance fusion cutting device

Abstract

The utility model discloses a fixed-distance fusion cutting device which comprises a conveying frame, a conveying belt is rotationally installed in the conveying frame, a flattening roller is arranged above the conveying belt, supporting blocks are rotationally installed at the two ends of the flattening roller through shafts, threaded supporting columns are rotationally installed on the two sides of the conveying frame, and the threaded supporting columns are connected with the conveying frame. Threaded sleeves are installed in the flattening rollers in an embedded mode and matched with the threaded supporting columns in a threaded mode, a support is fixedly installed on the conveying frame, and a reciprocating air cylinder is fixedly installed on the support. An internal hexagonal wrench can be inserted into the hexagonal groove, so that the threaded supporting column is driven to rotate, the threaded sleeve is in threaded connection with the threaded supporting column, the threaded supporting column is rotated to drive the supporting block to move up and down, the supporting block can move to drive the flattening roller to move, and therefore the distance between the flattening roller and the conveying belt is adjusted; and the flattening roller can adapt to flattening operation of packaging bags with different thicknesses.

Description

Technical Field

[0001] The utility model relates to a cutting device, in particular to a fixed-distance melting and cutting device. Background Art

[0002] Plastic packaging bags are made of plastic as raw material and are used to produce packaging bags for various daily necessities. They are widely used in daily life and industrial production. With the rapid development of industry, the production of plastic packaging bags has become more and more automated, and they need to be cut by hot melting during production, which can be convenient for subsequent use after cutting.

[0003] For example, the Chinese patent publication number CN217319517U discloses a fixed-distance melting and cutting device for the production of plastic packaging bags, wherein the telescopic end of the electric telescopic rod is connected to a connecting plate, a melting and cutting plate is installed on the lower surface of the connecting plate, a second mounting frame is symmetrically arranged on both sides of the third mounting frame on the upper surface of the workbench, a flattening shaft is arranged on the lower surface of the second mounting frame above the conveyor belt, a first mounting frame is arranged on one side of the second mounting frame on the upper surface of the workbench, and a mounting block is arranged on the lower surface of the first mounting frame above the conveyor belt. The second mounting frame can be installed by threading the mounting rod with the fixing hole and embedding the top end of the limiting rod into the inside of the limiting groove, and a flattening shaft is arranged inside the second mounting frame, so that the packaging bag is also assisted in flattening when the packaging bag is transmitted, thereby preventing the packaging bag from wrinkling and affecting the melting and cutting of the packaging bag.

[0004] Some problems were found during the use of the above-mentioned existing fixed-distance melting and cutting device for the production of plastic packaging bags. First, the thickness of different plastic packaging bags is different to a certain extent. The flattening shaft needs to adjust the distance between the flattening shaft and the conveyor belt according to the thickness of the packaging bag, so that the packaging bag can be flattened without affecting the normal transportation of the packaging bag. The distance between the product-carrying shaft and the conveyor belt cannot be conveniently adjusted. Secondly, after the hot cutter has worked for a long time, a certain amount of molten colloid will adhere to the blade, causing the hot cutter to adhere to the fracture when melting and cutting, and cannot be quickly separated from the packaging bag. Utility Model Content

[0005] The purpose of the utility model is to provide a fixed-distance melting and cutting device to solve the existing problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed-distance melting and cutting device, comprising a conveying frame, a conveying belt is rotatably installed in the conveying frame, a flattening roller is arranged above the conveying belt, support blocks are rotatably installed at both ends of the flattening roller through an axis, threaded support columns are rotatably installed on both sides of the conveying frame, a threaded sleeve is embedded in the flattening roller, and the threaded sleeve is threadedly matched with the threaded support column, a bracket is fixedly installed on the conveying frame, a reciprocating cylinder is fixedly installed on the bracket, a hot cutting knife is fixedly connected to the output end of the reciprocating cylinder, a cleaning block is arranged below the hot cutting knife, a fitting groove is opened in the cleaning block, and the fitting groove and the hot cutting knife cooperate with each other.

[0007] Preferably, a cleaning mechanism is fixedly installed on the conveying frame and near the rear.

[0008] Preferably, a hexagonal groove is formed at the upper end of the threaded support column, and a ruler is fixedly installed on the conveying frame and in front of the support block.

[0009] Preferably, through holes are provided on both sides of the bracket, and L-shaped support blocks are fixedly installed on both sides of the bracket.

[0010] Preferably, a lead screw is rotatably installed between the two cleaning blocks, a threaded ear is fixedly installed on the front of the cleaning block, the threaded ear cooperates with the lead screw thread, an adjusting motor is fixedly installed on one side of the L-shaped support block, and the output end of the adjusting motor is fixedly connected to the lead screw.

[0011] Preferably, a slide bar is fixedly installed between the two L-shaped support blocks and behind the lead screw, and a slide ear is fixedly installed behind the cleaning block, and the slide ear is slidably matched with the slide bar.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By using the hexagonal wrench, you can insert it into the hexagonal groove to drive the threaded support column to rotate. The threaded sleeve and the threaded support column are threaded. Rotating the threaded support column can drive the support block to move up and down. The movement of the support block can drive the flattening roller to move, thereby adjusting the distance between the flattening roller and the conveyor belt, so that the flattening roller can adapt to the flattening operation of packaging bags of different thicknesses.

[0014] 2. Through the cooperation between the fitting groove and the hot cutter, when the hot cutter is suspended in the air to transport the packaging bag, starting the adjustment motor can drive the screw to rotate. The screw cooperates with the thread of the threaded ear, so that the rotation of the screw can drive the cleaning block to move, and the molten gelatin adhering to the blade can be scraped off to avoid affecting the later melting and cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the flattening roller structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the L-shaped support block and bracket structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the cleaning block structure of the utility model.

[0020] In the figure: 1. conveying frame; 101. conveyor belt; 102. cleaning mechanism; 103. threaded support column; 104. hexagonal groove; 105. ruler; 2. flattening roller; 201. support block; 202. threaded sleeve; 3. bracket; 301. reciprocating cylinder; 302. hot cutter; 303. through hole; 4. L-shaped support block; 401. lead screw; 402. slide rod; 403. adjustment motor; 5. cleaning block; 501. fitting groove; 502. sliding ear; 503. threaded ear. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-5 The utility model provides a technical solution: a fixed-distance melting and cutting device, including a conveying frame 1, a conveying belt 101 is rotatably installed in the conveying frame 1, a flattening roller 2 is arranged above the conveying belt 101, support blocks 201 are rotatably installed at both ends of the flattening roller 2 through an axis, threaded support columns 103 are rotatably installed on both sides of the conveying frame 1, a threaded sleeve 202 is embedded in the flattening roller 2, and the threaded sleeve 202 is threadedly matched with the threaded support column 103, a bracket 3 is fixedly installed on the conveying frame 1, a reciprocating cylinder 301 is fixedly installed on the bracket 3, a hot cutter 302 is fixedly connected to the output end of the reciprocating cylinder 301, a cleaning block 5 is arranged below the hot cutter 302, a fitting groove 501 is opened in the cleaning block 5, and the fitting groove 501 and the hot cutter 302 cooperate with each other.

[0023] In this embodiment, the threaded sleeve 202 and the threaded support column 103 are threaded, so that rotating the threaded support column 103 can drive the support block 201 to move up and down, and the movement of the support block 201 can drive the flattening roller 2 to move, thereby adjusting the distance between the flattening roller 2 and the conveyor belt 101, so that the flattening roller 2 can adapt to the flattening operation of packaging bags of different thicknesses. At the same time, the bonding groove 501 and the hot cutting knife 302 cooperate with each other. When the hot cutting knife 302 is vacant and the packaging bag is idle, the cleaning block 5 is moved horizontally, and the bonding groove 501 is bonded to the blade of the hot cutting knife 302, so that the molten gel adhering to the blade can be scraped off to avoid affecting the subsequent melting and cutting.

[0024] Among them, in order to achieve the purpose of rotating the threaded support column 103, the present device is implemented by adopting the following technical solutions: a cleaning mechanism 102 is fixedly installed on the conveying frame 1 and near the rear, a hexagonal groove 104 is opened at the upper end of the threaded support column 103, and a ruler 105 is fixedly installed on the conveying frame 1 and in front of the support block 201.

[0025] By using an Allen wrench, it can be inserted into the hexagonal groove 104, thereby driving the threaded support column 103 to rotate. The rotation of the threaded support column 103 can drive the flattening roller 2 to move. The ruler 105 is used to observe the movement of the flattening roller 2, thereby knowing the distance between the flattening roller 2 and the conveyor belt 101.

[0026] Among them, in order to achieve the purpose of driving the cleaning block 5 to move horizontally, the present device adopts the following technical solutions: through holes 303 are opened on both sides of the bracket 3, L-shaped support blocks 4 are fixedly installed on both sides of the bracket 3, a screw 401 is rotatably installed between the two cleaning blocks 5, a threaded ear 503 is fixedly installed on the front of the cleaning block 5, and the threaded ear 503 is threadedly matched with the screw 401, an adjusting motor 403 is fixedly installed on one side of the L-shaped support block 4, and the output end of the adjusting motor 403 is fixedly connected to the screw 401, a sliding rod 402 is fixedly installed between the two L-shaped support blocks 4 and behind the screw 401, a sliding ear 502 is fixedly installed behind the cleaning block 5, and the sliding ear 502 is slidably matched with the sliding rod 402.

[0027] By starting the adjusting motor 403, the lead screw 401 can be driven to rotate. The lead screw 401 is threadedly matched with the threaded ear 503, so that the rotation of the lead screw 401 can drive the cleaning block 5 to move. The sliding ear 502 is slidably matched with the slide rod 402 to limit the cleaning block 5 to only move horizontally. The lateral movement of the cleaning block 5 can hang down the adhesion on the hot cutting knife 302. The through hole 303 enables the cleaning block 5 to move to the edge, thereby avoiding interference with the normal melting and cutting of the packaging bag by the hot cutting knife 302.

[0028] The working principle and use process of the utility model are as follows: when in use, the device needs to be placed in a suitable position, the packaging bag is placed on the conveyor belt 101, and the conveyor belt 101 can be started to transport the packaging bag. The cleaning mechanism 102 cooperates with the flattening roller 2 to clean and flatten the packaging bag. After a certain distance of packaging bag is transported, the reciprocating cylinder 301 is started to drive the hot cutting knife 302 to move downward, and the hot cutting knife 302 moves downward to melt and cut the packaging belt. Then the hot cutting knife 302 is reset, and the conveyor belt 101 is started again to repeat the above operation to continue to transport the packaging platform at a certain distance. At this time, starting the adjustment motor 403 can drive the screw 401 to rotate, and the screw 401 is threadedly matched with the threaded ear 503, so that the rotation of the screw 401 can drive the cleaning block 5 to move, and the movement of the cleaning block 5 can scrape off the adhesion on the hot cutting knife 302. When the cleaning block 5 moves to the other side, wait for the transmission of the conveyor belt 101 to be completed, and start the reciprocating cylinder 301 again to drive the hot cutting knife 302 to move. Repeat the above operation continuously, and the packaging bag can be automatically melted and cut at equal distances.

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

Claims

1. A fixed-distance melting and cutting device, comprising a conveying frame (1), characterized in that: A conveyor belt (101) is rotatably mounted in the conveying frame (1), a flattening roller (2) is arranged above the conveying belt (101), support blocks (201) are rotatably mounted at both ends of the flattening roller (2) through an axis, threaded support columns (103) are rotatably mounted on both sides of the conveying frame (1), a threaded sleeve (202) is embedded in the flattening roller (2), and the threaded sleeve (202) is threadedly matched with the threaded support column (103), a bracket (3) is fixedly mounted on the conveying frame (1), a reciprocating cylinder (301) is fixedly mounted on the bracket (3), a hot cutter (302) is fixedly connected to the output end of the reciprocating cylinder (301), a cleaning block (5) is arranged below the hot cutter (302), a fitting groove (501) is provided in the cleaning block (5), and the fitting groove (501) and the hot cutter (302) are matched with each other.

2. A fixed distance melting and cutting device according to claim 1, characterized in that: A cleaning mechanism (102) is fixedly installed on the conveying frame (1) and near the rear.

3. A fixed distance melting and cutting device according to claim 1, characterized in that: A hexagonal groove (104) is provided at the upper end of the threaded support column (103), and a scale (105) is fixedly installed on the conveying frame (1) and in front of the support block (201).

4. A fixed distance melting and cutting device according to claim 1, characterized in that: Through holes (303) are provided on both sides of the bracket (3), and L-shaped support blocks (4) are fixedly mounted on both sides of the bracket (3).

5. A fixed distance melting and cutting device according to claim 4, characterized in that: A lead screw (401) is rotatably mounted between the two cleaning blocks (5), a threaded ear (503) is fixedly mounted on the front of the cleaning block (5), the threaded ear (503) is threadably matched with the lead screw (401), an adjustment motor (403) is fixedly mounted on one side of the L-shaped support block (4), and an output end of the adjustment motor (403) is fixedly connected to the lead screw (401).

6. A fixed distance melting and cutting device according to claim 4, characterized in that: A slide bar (402) is fixedly installed between the two L-shaped support blocks (4) and behind the lead screw (401), and a slide ear (502) is fixedly installed behind the cleaning block (5), and the slide ear (502) is slidably matched with the slide bar (402).

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