Rope cutting device for stringing non-woven fabric bag making machine

Abstract

The utility model relates to a rope cutting device for a stringing non-woven fabric bag making machine, which comprises a hot knife and a cutter, the hot knife and the cutter are arranged in a staggered manner along the direction perpendicular to the axis of the hot knife, and the rope cutting device further comprises a driving source linked with the cutter or the hot knife. The rope cutting device for the stringing non-woven fabric bag making machine has the advantages that rope cutting work is completed, and a rope body is stably arranged in a folded edge of a non-woven fabric bag body in a penetrating mode.

Description

Technical Field

[0001] The utility model specifically relates to a rope cutting device for a rope threading non-woven fabric bag making machine. Background Art

[0002] The application of non-woven bag making machines in the field of environmental protection is becoming more and more extensive, and the market demand is growing. However, most of the existing non-woven bag making machines do not have the automatic rope threading function and require manual operation, which not only increases production costs but also reduces production efficiency. Therefore, the development of a non-woven bag making machine with automatic rope threading function has become an urgent need in the current market. In the process of developing a rope threading non-woven bag making machine, the process of "segmented rope cutting" is very important.

[0003] Currently, there are bag making machines that can thread ropes on the market, but they can only thread ropes on plastic bags, and cannot automatically thread ropes on non-woven bags. For example, a Chinese invention patent with publication number "CN102259442B" discloses a rope threading bag making machine that can directly thread a drawstring made of plastic film on a plastic bag. The general working principle of the rope drawing bag making machine is as follows: the rope body (also known as the rope drawing film in public documents) needs to be folded, split and formed first; during this period, the plastic bag body needs to be pulled, fed, folded in half and punched first, wherein the purpose of punching is to process incisions and punching holes; then the rope body and the plastic bag body pass through the rope drawing and forming device together, and the rope body is distributed in the folded edge of the plastic bag body. At this time, the folded edge of the plastic bag body is not hot welded, and the rope body is not cut; next, the plastic bag body with the rope body is bonded, heat-sealed and point-cut. Bonding is to seal the folded edge of the plastic bag body, and the rope body is confined in the plastic bag body. Only then is the rope drawing work completed, and heat-sealing and point-cutting are for bag separation. At this point, the rope drawing plastic bag processing is completed.

[0004] It can be seen that the above-mentioned rope threading bag making machine does not disclose any device for cutting the rope body. The connection relationship between the rope body and the non-woven bag is as follows: the rope body is partially inserted into the folded edge of the non-woven bag, and one end of the rope body needs to extend out of the bag body by a certain length, which is mainly to adapt to the characteristics of the non-woven material, facilitate operation, and ensure the stability of the rope threading.

[0005] In summary, in the process of developing a non-woven bag making machine with an automatic rope threading function, the process of "segmented rope cutting" needs to be considered. This application proposes a rope cutting device for a rope threading non-woven bag making machine to solve the problem of the lack of "rope cutting devices for rope threading non-woven bag making machines" in the market and to achieve stable rope cutting with adjustable rope cutting length. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a rope cutting device for a rope threading non-woven bag making machine in view of the above-mentioned deficiencies of the prior art, which completes the rope cutting work and stably threads the rope body into the folded edge of the non-woven bag body.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a rope cutting device for a rope threading non-woven bag making machine, characterized in that it includes a hot knife and a cutting knife, the hot knife and the cutting knife are staggered along a direction perpendicular to the hot knife axis, and also includes a driving source linked to the cutting knife or the hot knife.

[0008] By adopting the above technical scheme, the hot knife is different from the cutting knife. The cutting knife only has cutting force, while the hot knife also has the function of hot welding in the process of cooperating with the cutting knife to cut. The purpose is to bond the rope body to the non-woven fabric, so that when the cutting knife and the hot knife cooperate with each other to cut the rope body, the rope body will not move with the cutter, thereby completing the rope cutting work and the rope body is stably inserted into the folded edge of the non-woven bag body; further, the driving source is used to control the extension and retraction of the cutter. In actual use, by changing the maximum extension amount of the cutter, the reserved length of the rope body is changed to meet actual needs, and it has high adaptability and can be widely used in the processing of rope-threading non-woven bags of different specifications and types.

[0009] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the ironing knife includes a knife seat, the end of the knife seat is located on the side close to the cutting knife and is provided with a blade, and the end of the knife seat is also provided with a plurality of ironing blocks.

[0010] By adopting the above technical solution, the ironing block will bond the rope body to the non-woven fabric, so that when the cutter and the ironing knife cooperate with each other to cut the rope body, the rope body will not move with the cutter, thereby completing the rope cutting work and the rope body is stably inserted into the folded edge of the non-woven bag body; the blade cooperates with the cutter to complete the rope cutting. Furthermore, the positional relationship between the blade and the ironing knife can be changed according to actual conditions, taking the feeding direction of the non-woven bag body as the reference, (i) if the blade is installed on the front side of the blade, the processed rope body is located in front of the bag body, the ironing knife and the cutter will not touch the rope, and the rope length will not be longer than the width of the bag; (ii) if the blade is installed on the back side of the blade, the processed rope body is located behind the bag body, and the rope behind the bag body is made into a long rope, so that it can be blown up by the ironing knife and the cutter to avoid the ironing knife and the cutter from breaking the rope. In this way, the rope cutting device can be used for two purposes, and the processed rope body can be in front of the bag body or behind the bag body.

[0011] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: two sets of blades are provided at the end of the knife seat, the two sets of blades are arranged opposite to each other and are respectively distributed on both sides of the end of the knife seat, and several sets of ironing blocks are also provided at the end of the knife seat.

[0012] By adopting the above technical solution, two sets of blades are arranged on the knife holder, and only the installation position of the cutter is changed, so as to meet the rope cutting work of the non-woven bag with "rope in front of the bag body" or "rope behind the bag body", which is easy to operate and does not need to replace the knife holder.

[0013] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: an arc-shaped cutting edge is provided at the end of the cutting knife.

[0014] The above technical solution is adopted to improve the cutting performance of the cutter.

[0015] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the rope cutting device also includes a material pressing mechanism, and the material pressing mechanism is distributed on the side of the cutting knife.

[0016] By adopting the above technical solution, during the rope cutting process, the pressing mechanism can press the non-woven bag body, thereby improving the working stability of the rope cutting device, and the rope length can be reserved more accurately and cut faster.

[0017] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the material pressing mechanism includes a material pressing plate and a first cylinder, and the output end of the first cylinder is linked to the material pressing plate and controls the material pressing plate.

[0018] By adopting the above technical solution, the pressing plate is driven by the first cylinder to press the non-woven bag body, which is convenient for cutting the rope.

[0019] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the driving source includes a second cylinder, the output end of the second cylinder is linked to the cutter, and a linkage component is provided between the cutter and the second cylinder.

[0020] By adopting the above technical solution, the cylinder has the advantages of stable power output and fast action response, so the cylinder is selected as the driving source for controlling the movement of the cutter; a linkage component is further provided to facilitate the disassembly and assembly of the cutter and the adjustment of the installation position.

[0021] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the linkage assembly includes a first linkage plate linked to the output end of the second cylinder, the first linkage plate is connected to the second linkage plate, and the second linkage plate is provided with a cutter mounting groove.

[0022] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: a connecting hole connected to the first linkage plate is provided on one side of the second linkage plate, and a cutter mounting groove is provided on the other side, and the cutter mounting groove and the connecting hole are parallel to each other and spaced apart.

[0023] By adopting the above technical solution, the cutter installation groove and the connecting hole are eccentrically arranged. By rotating the second linkage plate, the positional relationship between the blade and the hot knife can be changed, so that the assembly relationship between the cutter and the hot knife can be selectively assembled according to actual conditions, and the operation is more convenient.

[0024] The rope cutting device for the rope threading non-woven bag making machine can be further configured as follows: the linkage assembly also includes a plurality of guide rods, and the first linkage plate is slidably connected to the guide rods.

[0025] The above technical solution is adopted to improve the working stability of the cutter and prevent it from deflecting.

[0026] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the second linkage block of the second embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of a hot knife according to Embodiment 2 of the present utility model;

[0031] Figure 5 It is a partial structural diagram of the second embodiment of the utility model.

[0032] Label annotation: cutter 1, hot knife 2, knife seat 21, blade 22, hot block 23, second cylinder 3, material pressing mechanism 4, material pressing plate 41, first cylinder 42, first linkage plate 5, second linkage plate 6, cutter mounting groove 61, connecting hole 62, guide rod 7. Implementation

[0033] 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.

[0034] Embodiment 1: Figure 1The rope cutting device for a rope threading non-woven bag making machine shown in the figure comprises a hot knife 2, a cutter 1, a material pressing mechanism 4, and a second cylinder 3 linked with the cutter 1. The hot knife 2 and the cutter 1 are staggered in a direction perpendicular to the axis of the hot knife 2. The hot knife 2 is different from the cutter 1. The cutter 1 only has a cutting force, while the hot knife 2 also has a hot welding function in the process of cooperating with the cutter 1 for cutting (in order to achieve the hot welding function, an ultrasonic hot welding mechanism can be used). The purpose is to bond the rope body to the non-woven fabric, so that in the process of the cutter 1 and the hot knife 2 cooperating with each other to cut the rope body, the rope body will not move with the cutter 1, thereby completing the rope cutting work and the rope body is stably inserted into the folded edge of the non-woven bag body. The end of the cutter 1 is provided with an arc-shaped cutting edge to improve the cutting performance of the cutter 1.

[0035] The ironing knife 2 comprises a knife seat 21, and a blade 22 is provided at the end of the knife seat 21 near the cutter 1. A plurality of ironing blocks 23 are also provided at the end of the knife seat 21. The ironing blocks 23 bond the rope body to the non-woven fabric, so that when the cutter 1 and the ironing knife 2 cooperate with each other to cut the rope body, the rope body will not move with the cutter 1, thereby completing the rope cutting work and the rope body is stably inserted into the folded edge of the non-woven bag body; the blade 22 cooperates with the cutter 1 to complete the rope cutting.

[0036] The pressing mechanism 4 includes a pressing plate 41 and a first cylinder 42. The output end of the first cylinder 42 is linked to and controls the pressing plate 41. During the rope cutting process, the pressing mechanism 4 can press the non-woven bag body, improve the working stability of the rope cutting device, reserve the rope length more accurately, and cut faster.

[0037] A linkage assembly is provided between the cutter 1 and the second cylinder 3, which is convenient for the disassembly and assembly and installation orientation adjustment of the cutter 1. The linkage assembly includes a first linkage plate 5 linked to the output end of the second cylinder 3, the first linkage plate 5 is connected to the second linkage plate 6, and the second linkage plate 6 is provided with a cutter installation groove 61. One side of the second linkage plate 6 is provided with a connection hole 62 connected to the first linkage plate 5, and the other side is provided with a cutter installation groove 61, and the cutter installation groove 61 and the connection hole 62 are parallel to each other and arranged at intervals. The cutter installation groove 61 and the connection hole 62 are eccentrically arranged, and the positional relationship between the blade 22 and the hot knife 2 can be changed by rotating the second linkage plate 6, so as to selectively assemble the cutting position relationship between the cutter 1 and the hot knife 2 according to actual conditions, and the operation is more convenient.

[0038] The linkage assembly further includes two groups of guide rods 7, and the two ends of the first linkage plate 5 are respectively slidably connected to a group of guide rods 7. The working stability of the cutter 1 is improved and it does not deflect.

[0039] The working principle is as follows: the pressing mechanism 4 presses the non-woven bag body, and the second cylinder 3 drives the cutter 1 to move through the linkage assembly until the cutter 1 moves to the single set limit extension amount, completing the rope cutting. It should be noted that the extension amount of the cutter 1 can be changed by adjusting the maximum extension amount of the second cylinder 3, that is, the reserved length of the rope body can be changed according to the actual situation.

[0040] The characteristic of the first embodiment is that only one set of blades 22 is provided. If the cutting position relationship between the cutter 1 and the ironing knife 2 needs to be changed, the positions of the ironing knife 2 and the cutter 1 need to be changed at the same time. However, the following functions can be realized: based on the feeding direction of the non-woven bag body, (i) if the blade 22 is installed on the front side of the blade 22, the processed rope body is located in front of the bag body, the ironing knife 2 and the cutter 1 will not touch the rope, and the rope length will not be longer than the width of the bag; (ii) if the blade 22 is installed on the rear side of the blade 22, the processed rope body is located behind the bag body, and the rope behind the bag body is made into a long rope, so that air can be added to the ironing knife 2 and the cutter 1 to prevent the ironing knife 2 and the cutter 1 from breaking the rope. Thus, the dual-purpose rope cutting device is realized, and the processed rope body can be in front of the bag body or behind the bag body.

[0041] Embodiment 2: Figures 2 to 5 The rope cutting device for a rope threading non-woven bag making machine shown in the figure is different from the embodiment 1 only in the structure of the ironing knife 2. The knife seat 21 of the ironing knife 2 is provided with two sets of blades 22, which are arranged oppositely and respectively distributed on both sides of the end of the knife seat 21. The end of the knife seat 21 is also provided with multiple sets of ironing blocks 23. The rest of the structure is the same as the embodiment 1, and the working principle is consistent with the embodiment 1.

[0042] The characteristic of the second embodiment is that two sets of blades 22 are provided. If the cutting position relationship between the cutter 1 and the ironing knife 2 needs to be changed, only the position of the cutter 1 needs to be changed, which is more convenient to operate. The following functions can also be realized: based on the feeding direction of the non-woven bag body, (i) if the blade 22 is installed on the front side of the blade 22, the processed rope body is located in front of the bag body, the ironing knife 2 and the cutter 1 will not touch the rope, and the rope length will not be longer than the width of the bag; (ii) if the blade 22 is installed on the rear side of the blade 22, the processed rope body is located behind the bag body, and the rope behind the bag body is made into a long rope, so that air can be added to the ironing knife 2 and the cutter 1 to prevent the ironing knife 2 and the cutter 1 from breaking the rope. Thus, the dual-purpose rope cutting device is realized, and the processed rope body can be in front of the bag body or behind the bag body.

[0043] It should be noted that although two sets of blades 22 are provided in the second embodiment, in actual operation, the blades 22 cooperating with the cutter 1 participate in the operation, and the other set of blades 22 will not cut the rope body.

Claims

1. Rope cutting device for rope threading non-woven bag making machine, characterized by: It includes a hot knife and a cutting knife. The hot knife and the cutting knife are staggered in a direction perpendicular to the axis of the hot knife. It also includes a driving source linked with the cutting knife or the hot knife. The hot knife includes a knife seat. The end of the knife seat is located on a side close to the cutter and is provided with a blade. The end of the knife seat is also provided with a plurality of hot blocks.

2. The rope cutting device for the rope drawing non-woven bag making machine according to claim 1 is characterized in that: The end of the knife seat is provided with two groups of blades, which are arranged opposite to each other and respectively distributed on both sides of the end of the knife seat. The end of the knife seat is also provided with a plurality of groups of hot blocks.

3. The rope cutting device for the rope drawing non-woven bag making machine according to claim 1 is characterized in that: The end of the cutter is provided with an arc-shaped cutting edge.

4. The rope cutting device for a rope drawing non-woven bag making machine according to any one of claims 1 to 3, characterized in that: The rope cutting device also includes a material pressing mechanism, which is distributed on the side of the cutter.

5. The rope cutting device for the rope drawing non-woven bag making machine according to claim 4 is characterized in that: The material pressing mechanism comprises a material pressing plate and a first air cylinder, wherein an output end of the first air cylinder is linked with the material pressing plate and controls the material pressing plate.

6. The rope cutting device for a rope drawing non-woven bag making machine according to any one of claims 1 to 3, characterized in that: The driving source comprises a second cylinder, the output end of the second cylinder is linked to the cutter, and a linkage component is provided between the cutter and the second cylinder.

7. The rope cutting device for the rope drawing non-woven bag making machine according to claim 6 is characterized in that: The linkage assembly comprises a first linkage plate that is linked to the output end of the second cylinder, the first linkage plate is connected to a second linkage plate, and a cutter mounting groove is provided on the second linkage plate.

8. The rope cutting device for the rope drawing non-woven bag making machine according to claim 7, characterized in that: A connecting hole connected to the first connecting plate is provided on one side of the second linkage plate, and a cutter installation groove is provided on the other side. The cutter installation groove and the connecting hole are parallel to each other and spaced apart.

9. The rope cutting device for the rope drawing non-woven bag making machine according to claim 7, characterized in that: The linkage assembly also includes a plurality of guide rods, and the first linkage plate is slidably connected to the guide rods.

Images