Bag making machine capable of preventing cutter from being blocked during cutting

Abstract

The utility model discloses a bag making machine capable of preventing a cutter from being blocked during cutting, which relates to the technical field of bag making machines and comprises a workbench, a feeding roller is mounted on one side of the top end of the workbench, three groups of tensioning rollers are arranged on one side, close to the feeding roller, of the top end of the workbench through a mounting frame, and an extrusion roller is fixedly connected to one side, close to the tensioning rollers, of the top end of the workbench. And an anti-blocking knife mechanism for carrying out anti-wrinkling and anti-blocking treatment on the materials is arranged in the fixed frame. According to the bag making machine capable of preventing the cutter from being blocked in the cutting process, in the cutting process, due to the fact that materials need to be pressed and sealed in a heat sealing mode, the materials can be stacked in the conveying process, and therefore in the conveying process, the draught fan in the fixing frame can blow air to the materials conveyed below to remove dust on the surfaces of the materials; and meanwhile, the draught fan is used for blowing air to the materials so that the materials can be kept in a flat state, and the situation that the materials are wrinkled in the cutting process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a bag making machine for preventing cutting and blocking of knives. Background Technique

[0002] A bag making machine is a machine for making various plastic packaging bags or packaging bags of other materials, and its processing range is plastic or other material packaging bags of various sizes, thicknesses and specifications;

[0003] During use, since the bag making machine needs to heat-seal and cut materials, there will be material accumulation on the workbench during hot air cutting, which affects the subsequent conveying and cutting of materials. At the same time, the surface of the material will also be affected by residual dust, affecting the product quality during subsequent factory shipment.

[0004] In order to overcome the above defects, a prior art (a Chinese patent with publication number CN108044988A and application date December 21, 2017) is a bag making machine. By arranging a purging device and an exhaust device between the feeding roller and the lifting device, the purging device is a blowing pipe, and the blowing pipe blows off the dust or sundries accumulated on the surface of the plastic bag. The exhaust device is a scraper, which can drive out the air bubbles in the film during the forward movement of the film, improving the effect during the hot pressing of the plastic bag.

[0005] The above mechanism blows air on the film being processed by using the blowing device, and the dust on the surface of the film is cleaned. However, during the actual use process, the film will still accumulate on the workbench during the conveying process, affecting the efficiency during subsequent cutting. Content of the Utility Model

[0006] The purpose of the utility model is to provide a bag making machine for preventing cutting and blocking of knives, so as to solve the problem that the film will still accumulate on the workbench during the conveying process as mentioned in the above background technique, affecting the subsequent cutting.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A bag making machine for preventing cutting and blocking of knives, including a workbench, a feeding roller is installed on one side of the top of the workbench, and three tension rollers are arranged on the side of the top of the workbench close to the feeding roller through a mounting frame. A pressing roller is fixedly connected to the side of the top of the workbench close to the tension rollers. On the other side of the top of the workbench, a second mounting frame is fixedly connected, and a first mounting frame is fixedly connected to the side of the top of the workbench close to the second mounting frame. A heat sealing plate is arranged inside the first mounting frame through a pneumatic telescopic rod. A cutting knife is slidably connected inside the second mounting frame, and a slitting table is fixedly connected to the top of the workbench inside the second mounting frame;

[0008] A fixing frame is fixedly connected to the top end on one side between the first mounting frame and the second mounting frame, and an anti-blocking knife mechanism for preventing the material from being wrinkled and jammed is arranged inside the fixing frame. The anti-blocking knife mechanism includes a blower, and the blower is arranged at the middle position of the inner top end of the fixing frame;

[0009] On both sides of the top end of the tension roller, connecting rods are respectively arranged, and a rectifying mechanism for preventing the conveying position of the material from shifting is arranged outside the tension roller.

[0010] Further, the rectifying mechanism includes a rectifying plate, and the rectifying plate is sleeved outside the connecting rod. An eccentric wheel is arranged on one side of the rectifying plate, and the eccentric wheel is connected to the mounting frame of the tension roller.

[0011] Further, a return spring is wound around one side of the outside of the connecting rod, and the return spring is connected to the rectifying plate. An elastic mechanism is formed between the rectifying plate and the connecting rod through the return spring.

[0012] Further, an alarm mechanism for detection is arranged at the bottom end of the cutting knife. The alarm mechanism includes a reflected light sensor, and the reflected light sensor is fixedly connected to one side of the bottom end of the cutting knife. The reflected light sensor is arranged above the slitting table.

[0013] Further, a fixed-length mechanism for controlling the cutting length of the material is arranged inside the second mounting frame. The fixed-length mechanism includes a cam, and the cam is rotatably connected to one end between the inner parts of the second mounting frame. One side of the cam is arranged above the cutting knife.

[0014] Further, guide rods are fixedly connected to both sides of the top end of the cutting knife, and the top ends of the guide rods extend to the outside of the second mounting frame. A connecting spring is wound around the outside of the guide rods, and the bottom end of the connecting spring is connected to the top end of the second mounting frame.

[0015] Further, a limiting groove is formed at the top end of the slitting table, and the width of the limiting groove is greater than the width of the cutting knife.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The material is conveyed through the cooperation of the feeding roller and the motor, and then the material is wound around the outside of the tension roller to be tightened. At the same time, the tension degree can be adjusted by using a plurality of tension rollers. Then the material is conveyed between the pressing rollers, and the air inside the material is extruded by the pressing rollers, so that the material can be better heat-sealed under the heat-sealing plate, avoiding the situation of incomplete heat-sealing caused by air between the films during the heat-sealing process. Then it is conveyed to the surface of the slitting table, and cutting treatment is carried out by the cooperation of the cutting knife and the limiting groove;

[0018] Further, during the cutting process, since heat sealing requires pressing and sealing the material, the transportation of the material will accumulate. Therefore, during the transportation process, the blower inside the fixing frame can blow air on the material transported below to remove the dust on the surface of the material and cool the heat-sealed area at the same time, avoiding affecting the subsequent cutting process. At the same time, using the blower to blow air on the material can keep the material in a flat state and avoid the situation of material wrinkles during cutting;

[0019] Furthermore, during the rotation of the connecting shaft of the blower, the eccentric wheel can be driven to rotate through the belt drive mechanism. During the rotation of the eccentric wheel, the aligning plate will be continuously squeezed, causing the aligning plate to move towards the side of the tensioning roller, thereby pushing the material wound around the outer surface of the tensioning roller and avoiding the situation of material position deviation during transportation. During the process of the aligning plate being pushed, the return spring is squeezed and its length is shortened. Then, when the eccentric wheel rotates to other angles, the aligning plate is reset by the elastic force of the return spring and guided by the connecting rod to avoid the situation of aligning plate angle deviation;

[0020] 2. The cam is driven by the motor to rotate. During the rotation of the cam, the cutting knife will be continuously pushed downward, so that the cutting knife is pushed and moves downward to realize the cutting process of the material by the cutting knife. And during the cutting process, through the mutual cooperation between the cutting knife and the limiting groove, the material can be cut more completely;

[0021] Further, the reflection light sensor at the bottom of the cutting knife can detect the running state of the device during cutting. When the device should be cutting the material but no product is produced, an alarm will be given in time to remind the staff to check and process it. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view structural schematic diagram of the present utility model;

[0023] Figure 2 is a structural schematic diagram of the anti-blocking knife mechanism and the aligning mechanism of the present utility model;

[0024] Figure 3 is a structural schematic diagram of the fixed-length cutting mechanism of the present utility model;

[0025] Figure 4 is a structural schematic diagram of the fixed-length cutting mechanism of the present utility model;

[0026] Figure 5 is a structural schematic diagram of the aligning mechanism of the present utility model;

[0027] Figure 6This is a front sectional view structural diagram of the utility model.

[0028] Figure 7 This is a structural diagram of the cutting knife and the limiting groove of the utility model.

[0029] In the figure: 1, workbench; 2, feeding roller; 3, tensioning roller; 4, extrusion roller; 5, first mounting rack; 6, heat sealing plate; 7, second mounting rack; 8, slitting table; 9, fixing rack; 10, blower; 11, cutting knife; 12, guide rod; 13, connecting spring; 14, cam; 15, limiting groove; 16, reflected light sensor; 17, aligning plate; 18, connecting rod; 19, reset spring; 20, eccentric wheel. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0031] As Figure 1 、 Figure 2 、 Figure 6 shown in the technical solution, in order to solve the problem that the film will still accumulate on the workbench during the conveying process: this bag-making machine with anti-cutting and anti-blocking knife discloses an anti-blocking knife mechanism, including a workbench 1, a feeding roller 2 is installed on one side of the top of the workbench 1, and three tensioning rollers 3 are arranged on the side of the top of the workbench 1 close to the feeding roller 2 through a mounting rack, an extrusion roller 4 is fixedly connected to the side of the top of the workbench 1 close to the tensioning roller 3, a second mounting rack 7 is fixedly connected to the other side of the top of the workbench 1, and a first mounting rack 5 is fixedly connected to the side of the top of the workbench 1 close to the second mounting rack 7. A heat sealing plate 6 is arranged inside the first mounting rack 5 through a pneumatic telescopic rod, a cutting knife 11 is slidably connected inside the second mounting rack 7, and a slitting table 8 is fixedly connected to the top of the workbench 1 inside the second mounting rack 7;

[0032] A fixing rack 9 is fixedly connected to the top of one side between the first mounting rack 5 and the second mounting rack 7, and an anti-blocking knife mechanism for preventing the material from being wrinkled and stuck is arranged inside the fixing rack 9. The anti-blocking knife mechanism includes a blower 10, and the blower 10 is arranged at the middle position of the top inside the fixing rack 9.

[0033] In this example, the material is conveyed through the cooperation of the feeding roller 2 and the motor. Then, the material is wound around the outside of the tensioning roller 3 to be tensioned. At the same time, multiple tensioning rollers 3 can be used to adjust the tension. Then, the material is conveyed between the extrusion rollers 4, and the air inside the material is extruded by the extrusion rollers 4, so that the material can be better heat-sealed under the heat-sealing plate 6, avoiding the situation of incomplete heat-sealing due to air between the films during the heat-sealing process. Then, it is conveyed to the surface of the slitting table 8, and cutting treatment is carried out by the cooperation of the cutting knife 11 and the limiting groove 15;

[0034] During the cutting process, since heat-sealing requires pressing and sealing the material, the conveyance of the material will accumulate. Therefore, during the conveyance process, the blower 10 inside the fixing frame 9 can blow air on the material conveyed below, removing the dust on the surface of the material and cooling the heat-sealing area at the same time, avoiding affecting the subsequent slitting process. At the same time, blowing air on the material by the blower enables the material to maintain a flat state, avoiding the situation of material wrinkles during cutting. Embodiment Two

[0035] As Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown in the technical solution, based on Embodiment One, to solve the problem that the position of the material shifts during conveyance, affecting the accuracy of sealing and cutting: This bag-making machine with anti-cutting and anti-blocking knife discloses a rectifying mechanism. Connecting rods 18 are respectively arranged on both sides of the top of the tensioning roller 3, and a rectifying mechanism for preventing the position of the conveyed material from shifting is arranged outside the tensioning roller 3. The rectifying mechanism includes a rectifying plate 17, and the rectifying plate 17 is sleeved outside the connecting rod 18. An eccentric wheel 20 is arranged on one side of the rectifying plate 17, and the eccentric wheel 20 is connected to the mounting frame of the tensioning roller 3. A return spring 19 is wound around one side outside the connecting rod 18, and the return spring 19 is connected to the rectifying plate 17. An elastic mechanism is formed between the rectifying plate 17 and the connecting rod 18 through the return spring 19.

[0036] In this example, during the rotation of the connecting shaft of the blower 10, the eccentric wheel 20 can be driven to rotate through the belt transmission mechanism. During the rotation of the eccentric wheel 20, the rectifying plate 17 will be continuously squeezed, causing the rectifying plate 17 to be pushed towards one side of the tensioning roller 3, so that the material wound around the outer surface of the tensioning roller 3 is pushed, avoiding the situation of material position shift during conveyance. During the process of the rectifying plate 17 being pushed, the return spring 19 is squeezed and its length is shortened. Then, when the eccentric wheel 20 rotates to other angles, the rectifying plate 17 is reset by the elastic force of the return spring 19 and is guided by the connecting rod 18, avoiding the situation of the rectifying plate 17 deviating in angle. Embodiment Three

[0037] As Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 shown in the technical solution, in order to solve the problem of deviation in the cutting length during cutting: the bag-making machine for preventing cutting and jamming the knife discloses a fixed-length mechanism. A fixed-length mechanism for controlling the cutting length of the material is arranged inside the second mounting bracket 7. The fixed-length mechanism includes a cam 14, and the cam 14 is rotatably connected to one end between the interiors of the second mounting brackets 7. One side of the cam 14 is arranged above the cutting knife 11. An alarm mechanism for detection is arranged at the bottom end of the cutting knife 11. The alarm mechanism includes a reflection light sensor 16, and the reflection light sensor 16 is fixedly connected to one side of the bottom end of the cutting knife 11. The reflection light sensor 16 is arranged above the slitting table 8. Guide rods 12 are fixedly connected to both sides of the top end of the cutting knife 11, and the top ends of the guide rods 12 extend to the outside of the second mounting bracket 7. A connecting spring 13 is wound around the outside of the guide rods 12, and the bottom end of the connecting spring 13 is connected to the top end of the second mounting bracket 7. A limiting groove 15 is formed at the top end of the slitting table 8, and the width of the limiting groove 15 is greater than the width of the cutting knife 11.

[0038] In this example, the cam 14 is driven by a motor to rotate. When the cam 14 rotates, it continuously presses the cutting knife 11 downward and advances, so that the cutting knife 11 is pushed and moves downward, realizing the slitting process of the material by using the cutting knife 11. And during cutting, through the mutual cooperation between the cutting knife 11 and the limiting groove 15, the material can be slit more completely;

[0039] The reflection light sensor 16 at the bottom end of the cutting knife 11 can detect the operating state of the device during slitting. When the device should be cutting the material but no product is produced, an alarm is given in time to remind the staff to check and handle it.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bag-making machine for preventing cutting and blocking of a knife, comprising a workbench (1), a feeding roller (2) being installed on one side of the top of the workbench (1), and three sets of tensioning rollers (3) being arranged on the side of the top of the workbench (1) close to the feeding roller (2) through a mounting frame, a squeezing roller (4) being fixedly connected to the side of the top of the workbench (1) close to the tensioning roller (3), a second mounting frame (7) being fixedly connected to the other side of the top of the workbench (1), and a first mounting frame (5) being fixedly connected to the side of the top of the workbench (1) close to the second mounting frame (7), a heat-sealing plate (6) being arranged inside the first mounting frame (5) through a pneumatic telescopic rod, a cutting knife (11) being slidably connected inside the second mounting frame (7), and a slitting table (8) being fixedly connected to the top of the workbench (1) inside the second mounting frame (7); Features: A fixing frame (9) is fixedly connected to the top end of one side between the first mounting frame (5) and the second mounting frame (7), and an anti-blocking knife mechanism for preventing materials from wrinkling and getting stuck is arranged inside the fixing frame (9), the anti-blocking knife mechanism comprises a fan (10), and the fan (10) is arranged at a middle position of the top end inside the fixing frame (9); Connecting rods (18) are respectively arranged on both sides of the top end of the tensioning roller (3), and a correction mechanism for preventing the material conveying position from being offset is arranged outside the tensioning roller (3).

2. The bag-making machine with anti-cutting and knife-blocking function according to claim 1, characterized in that: The alignment mechanism comprises an alignment plate (17), and the alignment plate (17) is sleeved on the outside of the connecting rod (18). An eccentric wheel (20) is provided on one side of the alignment plate (17), and the eccentric wheel (20) is connected to a mounting frame of the tensioning roller (3).

3. The bag-making machine with anti-cutting and knife-blocking function according to claim 2, characterized in that: A return spring (19) is wound around one side of the outside of the connecting rod (18), and the return spring (19) is connected to the correction plate (17). An elastic mechanism is formed between the correction plate (17) and the connecting rod (18) via the return spring (19).

4. The bag-making machine with anti-cutting and knife-blocking function according to claim 1, characterized in that: An alarm mechanism for detection is provided at the bottom end of the cutting knife (11), the alarm mechanism comprising a reflected light sensor (16), and the reflected light sensor (16) is fixedly connected to one side of the bottom end of the cutting knife (11), and the reflected light sensor (16) is arranged above the slitting table (8).

5. The bag-making machine with anti-cutting and knife-blocking function according to claim 1, characterized in that: A length-fixing mechanism for controlling the cutting length of the material is arranged inside the second mounting frame (7), the length-fixing mechanism comprising a cam (14), and the cam (14) is rotatably connected to one end of the interior of the second mounting frame (7), and one side of the cam (14) is arranged above the cutting knife (11).

6. The bag-making machine with an anti-cutting and knife-blocking function according to claim 5, characterized in that: Both sides of the top of the cutting knife (11) are fixedly connected to guide rods (12), and the top of the guide rods (12) extends to the outside of the second mounting frame (7). A connecting spring (13) is wound around the outside of the guide rods (12), and the bottom end of the connecting spring (13) is connected to the top of the second mounting frame (7).

7. The bag-making machine with an anti-cutting and knife-blocking function according to claim 6, characterized in that: A limiting groove (15) is provided at the top of the cutting table (8), and the width of the limiting groove (15) is greater than the width of the cutting blade (11).

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