Rapid bag making machine with pressing claws

Abstract

The utility model relates to the field of film bag manufacturing, in particular to a rapid bag making machine with pressing claws, which comprises a rack, a hot shearing device and a bag pressing device are arranged on the rack along the material conveying direction, the rapid bag making machine further comprises a bag shifting mechanism, and the bag shifting mechanism is arranged between the hot shearing device and the bag pressing device. The pushing device is used for pushing a finished product sheared by the hot shearing device apart from subsequent materials; and the pressing claw device is arranged in the bag shifting mechanism and is used for pressing the tail end of the film bag on the bag pressing device. The bag shifting mechanism is driven by the driving motor A, rotation pause time is set in the moving process of the shifting rod mechanism, feeding is carried out according to the pause time, after hot shearing is completed, a thin film bag is separated from the hot shearing device through the shifting rod mechanism, and then the tail of the bag clamped by the bag pressing device is pressed through the pressing claw mechanism. Therefore, needling fixation is not needed.

Description

Technical Field

[0001] This utility model relates to the field of film bag manufacturing, specifically to a high-speed bag making machine with pressure claws. Background Technology

[0002] The fully automatic bag-making machine uses a servo motor to drive the feeding and control the bag length, and a frequency converter motor to drive the heating cutter to cut the bags up and down. A silicone rubber roller is installed under the heating cutter as a support roller. After the film roll on the support roller is heat-sealed and cut, it is conveyed forward, and then pressed down by a bag-pressing device at the front. Often, a device is needed to separate the bag from the film roll. This device typically uses a ring-shaped chain divided into three equal segments, with three bag-pulling rods fixed at equal distances on each segment, rotating between the chain. This action is driven by the bag-making machine. The main drive shaft of the hot cutting knife drives the chain to move synchronously. During operation, due to the uniform and synchronous rotation of the chain by the hot cutting knife, the tail of the film bag often sticks up when the bag pressing device in front presses it down, which can easily cause interference with the products produced later. Therefore, it is usually necessary to install hot and cold needles on the bag pressing device to prick and pierce the tail of the bag, so as to ensure that the bags can be effectively stacked and the tail does not stick up. This means that each bag will have a piercing hole. Because some bags cannot be pricked and will be damaged, high-speed bag making machines cannot be used to produce such bags. Utility Model Content

[0003] This utility model provides a high-speed bag making machine with pressure claws. The bag-pulling mechanism is driven by a drive motor A. During the movement of the lever mechanism, a rotation pause time is set to feed the material. After the hot shearing is completed, the film bag is separated from the hot shearing device by the lever mechanism. Then, the pressure claw mechanism presses down on the tail of the bag clamped by the bag-pressing device, so that the needle is not needed to fix it.

[0004] This utility model is achieved through the following technical solution:

[0005] A high-speed bag-making machine with pressure claws includes a frame, on which a hot shearing device and a bag-pressing device are arranged along the material conveying direction.

[0006] It also includes,

[0007] A bag-pulling mechanism is provided between the hot shearing device and the bag-pressing device, and is used to separate the finished product cut by the hot shearing device from the subsequent materials.

[0008] A pressure claw device is provided within the bag-pulling mechanism to press the tail end of the film bag on the bag-pressing device;

[0009] The bag-pulling mechanism is connected to the output end of the drive motor A, and the pressure claw device is connected to the drive end of the drive motor B through the linkage mechanism A.

[0010] Furthermore, the bag-dispensing mechanism includes a rotary chain, a first rotating shaft, a second rotating shaft, and levers. The first and second rotating shafts are rotatably connected to the frame. Sprockets are provided on the first and second rotating shafts. The rotary chain meshes with the sprockets for transmission. There are two rotary chains. Multiple levers are evenly distributed and fixedly connected between the two rotary chains. A pulley is rotatably connected to the second rotating shaft. A torque limiter is provided on one side of the pulley. The torque limiter is fixedly connected to the second rotating shaft.

[0011] Furthermore, the distance between two adjacent levers is equal to the circumference of the sprocket.

[0012] Furthermore, the pressing claw device includes a pressing claw shaft, which is disposed between the first rotating shaft and the second rotating shaft. Pressing claws are evenly distributed on the pressing claw shaft, and the pressing claw shaft reciprocates so that the pressing claws press the tail end of the film bag on the pressing bag device.

[0013] Furthermore, a positioning block is fixedly connected to the second rotating shaft, and a proximity switch for detecting the positioning block is fixedly connected to the frame.

[0014] Furthermore, the bag-pressing device is provided with a raised pad on the side near the pressing claw.

[0015] Further, the linkage mechanism A includes a connecting plate and a cylinder. One end of the connecting plate is fixedly connected to the pressure claw shaft, and the other end is hinged and fixed to the tail end of the cylinder. The cylinder guide rod is fixedly connected to one end of the connecting block, and the other end of the connecting block is rotatably connected to the eccentric shaft on the eccentric wheel. The central shaft of the eccentric wheel is fixedly connected to the output end of the drive motor B.

[0016] Furthermore, the connecting block is provided with multiple mounting holes along its length, and the eccentric shaft is rotatably connected to one of the mounting holes via a bearing.

[0017] The beneficial effects of this utility model are as follows:

[0018] By setting up a drive motor A to drive the lever mechanism and a drive motor B to drive the pressure claw device, the bag-pulling mechanism opens the cut film bag, and after the bag-pressing mechanism presses down on the film bag, the pressure claw device presses down on the tail of the film bag to prevent the tail from sticking up and affecting subsequent work.

[0019] Setting the distance between two adjacent levers to be the same as the circumference of the sprocket allows one lever to actuate exactly once the sprocket rotates one revolution. A proximity switch is used to detect the positioning block, thereby controlling the running time of drive motor A and providing time for the next film bag to be delivered.

[0020] By setting a torque limiter to drive the second shaft, when the lever experiences bag overload, the torque limiter will activate, preventing the pulley from driving the second shaft to rotate, thus ensuring production safety.

[0021] In linkage mechanism A, the cylinder is used as a connecting component. When the number of film bags pressed by the front-end pressure claw gradually increases, it can act as a buffer. At the same time, when the number of film bags reaches a certain number and the front-end machine needs to clamp the film bags as a whole, the cylinder can control the pressure claw to release, thereby ensuring the smooth progress of production.

[0022] Multiple mounting holes are provided along the length of the connecting block, allowing the eccentric shaft to be installed in the mounting holes as needed. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a side view of the structure of this utility model.

[0025] Figure 2 This is a partial structural diagram of the present invention after the outer frame has been removed.

[0026] Figure 3 This is a schematic diagram of the bag-pulling mechanism.

[0027] Figure 4 This is a partial longitudinal sectional view of the bag-making machine. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] like Figure 1-4 As shown, a high-speed bag-making machine with pressure claws includes a frame 10, on which a hot shearing device 20 and a bag-pressing device 30 are arranged along the material conveying direction.

[0030] It also includes,

[0031] A bag-pulling mechanism 40 is disposed between the hot shearing device 20 and the bag-pressing device 30, and is used to separate the finished product cut by the hot shearing device 20 from the subsequent materials.

[0032] A pressure claw device 50 is disposed within the bag-pulling mechanism 40 and is used to press the tail end of the film bag on the bag-pressing device 30.

[0033] The bag-pulling mechanism 40 is connected to the output end of the drive motor A401, and the pressure claw device 50 is connected to the drive end of the drive motor B501 through the linkage mechanism A.

[0034] Furthermore, the bag-dispensing mechanism 40 includes a rotary chain 402, a first rotating shaft 403, a second rotating shaft 404, and levers 405. The first rotating shaft 403 and the second rotating shaft 404 are rotatably connected to the frame 10. Sprockets 406 are provided on the first rotating shaft 403 and the second rotating shaft 404. The rotary chain 402 meshes with the sprockets 406 for transmission. There are two rotary chains 402, and multiple levers 405 are evenly distributed and fixedly connected between the two rotary chains 402. A pulley 407 is rotatably connected to the second rotating shaft 404. A torque limiter 408 is provided on one side of the pulley 407, and the torque limiter 408 is fixedly connected to the second rotating shaft 404.

[0035] Furthermore, the distance between two adjacent levers 405 is equal to the circumference of the sprocket 406.

[0036] Furthermore, the pressing claw device 50 includes a pressing claw shaft 502, which is disposed between the first rotating shaft 403 and the second rotating shaft 404. Pressing claws 5021 are evenly distributed on the pressing claw shaft 502. The pressing claw shaft 502 reciprocates so that the pressing claws 5021 press the tail end of the film bag on the pressing bag device 30.

[0037] Furthermore, a positioning block 6036 is fixedly connected to the second rotating shaft 404, and a proximity switch for detecting the positioning block 6036 is fixedly connected to the frame 10.

[0038] Furthermore, the bag pressing device 30 is provided with a raised pad 409 on the side near the pressing claw 5021.

[0039] Furthermore, the linkage mechanism A includes a connecting plate 503 and a cylinder 504. One end of the connecting plate 503 is fixedly connected to the pressure claw shaft 502, and the other end is hinged and fixed to the tail end of the cylinder 504. The guide rod of the cylinder 504 is fixedly connected to one end of the connecting block 505, and the other end of the connecting block 505 is rotatably connected to the eccentric shaft 5061 on the eccentric wheel 506. The central shaft of the eccentric wheel 506 is fixedly connected to the output end of the drive motor B501.

[0040] Furthermore, the connecting block 505 is provided with a plurality of mounting holes 5051 along its length, and the eccentric shaft 5061 is rotatably connected to one of the mounting holes 5051 by a bearing.

[0041] Specifically, the hot shearing device 20 and the bag pressing device 30 are conventional technologies in bag making machines and will not be described in detail in this patent. In this patent, the bag-pulling mechanism 40 with six levers is used to pry open the film bag cut by the hot shearing device 20, and then the pressing claw device 50 is used to press the tail of the film bag onto the raised pad 401. There is no need to use needles to prick, avoiding the problem of needle holes. By setting the cylinder in the linkage mechanism as the connecting rod, when the thickness of the film bag pressed by the pressing claw 5021 increases due to the increase in the number, the cylinder is used as a buffer device to buffer the change. At the same time, when the number of film bags pressed by the bag pressing device 30 reaches a certain value, the guide rod of the cylinder 504 retracts, which allows the pressing claw 5021 to detach from the film bag without the need to drive the motor B501 to rotate, thus avoiding disruption of the production rhythm.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-speed bag-making machine with pressure claws, comprising a frame (10), wherein a hot shearing device (20) and a bag-pressing device (30) are arranged on the frame (10) along the material conveying direction, characterized in that, It also includes, Bag-pulling mechanism (40), which is located between the hot shearing device (20) and the bag pressing device (30), is used to separate the finished product cut by the hot shearing device (20) from the subsequent materials; A pressure claw device (50) is provided in the bag-pulling mechanism (40) for pressing the tail end of the film bag on the bag-pressing device (30); The bag-pulling mechanism (40) is connected to the output end of the drive motor A (401), and the pressure claw device (50) is connected to the drive end of the drive motor B (501) through the linkage mechanism A.

2. The high-speed bag-making machine with pressure claws according to claim 1, characterized in that, The bag-dispensing mechanism (40) includes a rotary chain (402), a first rotating shaft (403), a second rotating shaft (404), and levers (405). The first rotating shaft (403) and the second rotating shaft (404) are rotatably connected to the frame (10). Sprockets (406) are provided on the first rotating shaft (403) and the second rotating shaft (404). The rotary chain (402) meshes with the sprockets (406) for transmission. There are two rotary chains (402). Multiple levers (405) are evenly distributed and fixedly connected between the two rotary chains (402). A pulley (407) is rotatably connected to the second rotating shaft (404). A torque limiter (408) is provided on one side of the pulley (407). The torque limiter (408) is fixedly connected to the second rotating shaft (404).

3. A high-speed bag-making machine with pressure claws according to claim 2, characterized in that, The distance between two adjacent levers (405) is equal to the circumference of the sprocket (406).

4. A high-speed bag-making machine with pressure claws according to claim 2, characterized in that, The pressing claw device (50) includes a pressing claw shaft (502), which is disposed between the first rotating shaft (403) and the second rotating shaft (404). Pressing claws (5021) are evenly distributed on the pressing claw shaft (502). The pressing claw shaft (502) reciprocates so that the pressing claws (5021) press the tail end of the film bag on the bag pressing device (30).

5. A high-speed bag-making machine with pressure claws according to claim 2, characterized in that, A positioning block (6036) is fixedly connected to the second rotating shaft (404), and a proximity switch for detecting the positioning block (6036) is fixedly connected to the frame (10).

6. A high-speed bag-making machine with pressure claws according to claim 4, characterized in that, The bag pressing device (30) has a raised pad (409) on the side near the pressing claw (5021).

7. A high-speed bag-making machine with pressure claws according to claim 4, characterized in that, The linkage mechanism A includes a connecting plate (503) and a cylinder (504). One end of the connecting plate (503) is fixedly connected to the pressure claw shaft (502), and the other end is hinged and fixed to the tail end of the cylinder (504). The guide rod of the cylinder (504) is fixedly connected to one end of the connecting block (505), and the other end of the connecting block (505) is rotatably connected to the eccentric shaft (5061) on the eccentric wheel (506). The central shaft of the eccentric wheel (506) is fixedly connected to the output end of the drive motor B (501).

8. A high-speed bag-making machine with pressure claws according to claim 7, characterized in that, The connecting block (505) has multiple mounting holes (5051) along its length, and the eccentric shaft (5061) is rotatably connected to one of the mounting holes (5051) through a bearing.

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