Perforating device and bag body forming mechanism

Abstract

The utility model discloses a punching device which comprises a punching part and a limiting piece for assisting the reset punching part to stay at a punching station, and the punching part is arranged on a rack in a swinging mode. The punching part comprises a punching knife and a power part for driving the punching knife to move, and the limiting part is arranged at the punching station; before punching, the punching component is vertically arranged and makes contact with the limiting piece, and the punching knife faces the coil stock. During punching, the power piece drives the punching cutter to move towards the roll material and punch, and the continuously conveyed roll material drives the punching part to swing relative to the rack; after punching, the power piece drives the punching knife to reset, the punching knife is separated from the coil stock, and the punching component swings reversely to reset. The punching device is simple in structure and convenient to machine and assemble, a power component does not need to be additionally arranged during swinging and resetting of the punching component, the cost of the punching device is greatly reduced, and meanwhile continuous conveying roll materials can be punched.

Description

Technical Field

[0001] The utility model relates to an improved invention of a punching device and a bag body forming mechanism, and particularly relates to a punching device and a bag body forming applicable to coil materials such as paper, plastic film, composite film, etc. Background Art

[0002] Existing coil materials are usually punched intermittently. When punching, the coil material stops conveying, and the punching knife moves vertically relative to the coil material to achieve punching; after punching is completed, the coil material continues to convey. If the coil material keeps conveying, when punching, there is a contact time between the punching knife and the coil material, and the relative movement of the coil material to the punching knife will cause the punched hole to be torn or hooked by the punching knife.

[0003] In order to achieve punching without stopping the material, we may think of following punching. When punching, the punching knife and the coil material move synchronously, and after punching is completed, the punching knife quickly retracts and resets. However, such punching devices have problems of complex structure and high equipment cost, and it takes a certain amount of time for the punching knife to follow punching and reset, which is not suitable for high-speed and intensive punching operations. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the technical problem solved by the utility model aims to provide a punching device and a bag body forming mechanism with a concise structure, low cost and applicable to high-speed production.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: A punching device, characterized in that: it includes a punching component and a limiting member for assisting the punching component to stay at the punching station, and the punching component is swingably arranged on the frame;

[0006] The punching component includes a punching knife and a power member for driving the punching knife to move, and the limiting member is arranged at the punching station;

[0007] Before punching, the punching component is vertically arranged and in contact with the limiting member, and the punching knife faces the coil material;

[0008] When punching, the power member drives the punching knife to move towards the coil material and punch holes, and the continuously conveyed coil material drives the punching component to swing relative to the frame;

[0009] After punching, the power member drives the punching knife to reset, the punching knife is separated from the coil material, and the punching component swings back and resets.

[0010] During the conveying process of the coil material of the present utility model, punching is carried out to achieve punching without stopping the material. When punching, the punching knife is inserted into the coil material. As the coil material moves forward, it drives the punching component to swing forward. The punching knife moves forward with the coil material, so it will not hook or tear the coil material. After punching, the punching knife retracts and separates from the coil material. Under the action of gravity and / or restoring force, the punching component swings in the reverse direction until the limiting component blocks the punching component, making it stay at the punching station and return to the state before punching. The structure of the present utility model is concise, the equipment processing and assembly are convenient, and the swing and reset of the punching component do not require additional power components, greatly reducing the equipment cost. At the same time, it can also punch the continuously conveyed coil material.

[0011] Preferably, the punching device further includes a sensor for detecting the position information of the coil material. Both the sensor and the power component are connected to the controller. When the punching position of the coil material is conveyed to the punching station, the controller receives this information sent by the sensor and then sends an instruction to the power component, and the power component drives the punching knife to perform punching operations to make the punching position accurate.

[0012] Preferably, the punching component is connected with a reset elastic component. The punching component automatically resets by using the elastic force of the reset spring component.

[0013] Preferably, the reset elastic component is a tension spring. One end of the tension spring is connected to the lower end of the punching component, and the other end of the tension spring is connected to a fixed position on the frame. When the coil material drives the punching component to tilt, the tension spring is stretched. When the punching knife separates from the coil material, the pulling force of the tension spring makes the punching component swing in the reverse direction and reset.

[0014] Preferably, a material supporting plate is provided below the punching component. The material supporting plate is provided with a first channel for the punching knife to pass through. The material supporting plate supports the coil material at the punching station. When punching, the coil material is stressed, and the punching knife passes through the coil material and the first channel to achieve punching.

[0015] Preferably, an upper baffle is provided above the material supporting plate. The upper baffle is provided with a second channel for the punching knife to pass through. The upper baffle blocks the surrounding of the punching position of the coil material. When the punching knife retracts, the upper baffle blocks the coil material, so that the punching knife is effectively separated from the coil material, avoiding the coil material being taken away by the punching knife.

[0016] Preferably, the limiting component includes a buffer pad. The buffer pad is installed on the frame through a mounting plate. The buffer pad not only has the functions of shock absorption and noise reduction, but also reduces or avoids the rebound of the punching component, so that the punching component quickly stays at the punching station.

[0017] Preferably, a first adjusting component for adjusting the lateral positions of the punching component and the limiting component is provided on the frame; a second adjusting component for adjusting the lateral position of the material supporting plate is also provided on the frame. The lateral positions of the punching component, the limiting component and the material supporting plate on the frame are adjusted by the first adjusting component and the second adjusting component to meet the punching positions of the coil material.

[0018] Preferably, both the first adjusting component and the second adjusting component include a sliding seat and a screw rod. The screw rod is rotatably arranged on the frame and is parallel to the cross beam. The sliding seat is slidably arranged on the cross beam of the frame, and the sliding seat is in threaded connection with the screw rod.

[0019] The punching component is swingably arranged on the sliding seat of the first adjusting component, the limiting component is installed on the sliding seat of the first adjusting component, and the material supporting plate is arranged on the sliding seat of the second adjusting component.

[0020] Synchronizing wheels are installed on the screw rods of the first adjusting component and the second adjusting component, and a synchronous belt is arranged on the synchronizing wheels. Driving one screw rod can synchronously adjust the positions of the punching component, the limiting component and the material supporting plate, and the adjustment is convenient and fast.

[0021] A bag body forming mechanism is characterized in that it includes a coil material conveying device and a punching device, and the coil material conveying device continuously conveys the coil material.

[0022] The punching device includes a punching component and a limiting component for assisting in resetting the punching component to stay at the punching station. The punching component is swingably arranged on the frame.

[0023] The punching component includes a punching knife and a power component for driving the punching knife to move. The limiting component is arranged at the punching station.

[0024] Before punching, the punching component is vertically arranged and in contact with the limiting component, and the punching knife faces the coil material.

[0025] During punching, the power component drives the punching knife to press against the coil material, and the continuously conveyed coil material drives the punching component to swing relative to the frame.

[0026] After punching, the power component drives the punching knife to reset, the punching knife is separated from the coil material, and the punching component swings back to reset. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the present invention.

[0028] Figure 2 It is a schematic diagram before punching of the present invention.

[0029] Figure 3 It is the punching step of the present invention.

[0030] Figure 4 This is a schematic diagram after punching of the present utility model. Specific embodiments

[0031] The embodiments and related details and working principles of the present utility model will be described below in conjunction with the accompanying drawings. The punching device is used for punching roll materials such as paper, plastic films, composite films, etc. Such roll materials can be processed into bag bodies, and the bag bodies can be used for packaging. Therefore, the punching device can be used in packaging equipment, bag body forming mechanisms, etc. The following takes the bag body forming mechanism as an example.

[0032] A bag body forming mechanism includes a roll material conveying device and a punching device. The roll material conveying device conveys continuously. The roll material conveying device can adopt traction rollers to continuously convey the roll material 1.

[0033] The punching device includes a punching component 10 and a limiting member 6 for assisting the punching component to return to and stay at the punching station. The punching component 10 is swingably arranged on the frame 19. Since the transverse position of the punching of the roll material 1 will change according to the width of the roll material and the function of the holes, in order to be able to punch roll materials at different positions, a first adjusting component 11 for adjusting the transverse positions of the punching component 10 and the limiting member 6 is provided on the frame 19. The transverse positions of the punching component and the limiting member on the frame are adjusted through the first adjusting component to meet the punching requirements of the roll material. The punching component 10 includes a punching knife 5 and a power member 4 for driving the punching knife to move. The power member can adopt a cylinder to drive the punching knife to punch or reset. The limiting member 6 is arranged at the punching station; before punching, the punching component 10 is vertically arranged and in contact with the limiting member 6, and the punching knife 5 faces the roll material 1; when punching, the power member 4 drives the punching knife to move towards the roll material and punch. At this time, the cutting head of the punching knife 5 penetrates the roll material 1. The continuously conveyed roll material drives the punching component 10 to swing relative to the frame 19, that is, the roll material 1 moves, and the punching knife 5 moves accordingly, so that the punching component 10 swings on the frame, so that the punching knife will not hook or tear the roll material; after punching, the power member 4 drives the punching knife to reset, and the punching knife 5 is separated from the roll material 1. Under the action of gravity and / or a restoring force, the punching component 10 swings in the reverse direction until the limiting member 6 blocks the punching component and makes it stay at the punching station, returning to the state before punching. The structure of the present utility model is concise, the equipment processing and assembly are convenient, and no additional power components are required for the swinging and resetting of the punching component, greatly reducing the equipment cost. At the same time, it can also punch the continuously conveyed roll material and realize punching without stopping the material.

[0034] Below the punching component 10, there is a material supporting plate 2. The material supporting plate is provided with a first channel through which the punching knife passes. Above the material supporting plate 2, there is an upper baffle plate 3, and the upper baffle plate 3 is provided with a second channel through which the punching knife passes. The material supporting plate 2 supports the coil material at the punching station. When punching, the coil material is stressed, and the punching knife 5 quickly passes through the coil material, the second channel, and the first channel to achieve punching. The upper baffle plate 3 blocks the surrounding of the punching position of the coil material. When the punching knife retracts, the upper baffle plate blocks the coil material, so that the punching knife is effectively separated from the coil material, avoiding the coil material being taken away by the punching knife. On the frame 19, there is also a second adjusting component 12 for adjusting the lateral position of the material supporting plate. By adjusting the second adjusting component, the lateral position of the material supporting plate 2 on the frame is adjusted to meet the punching position of the coil material. Both the first adjusting component 11 and the second adjusting component 12 include a sliding seat 8 and a screw rod 9. The screw rod is rotatably arranged on the frame 19 and is parallel to the cross beam. The sliding seat 8 is slidably arranged on the cross beam of the frame, and the sliding seat is threadedly connected with the screw rod 9. The punching component 10 is swingably arranged on the sliding seat 8 of the first adjusting component 11. The swingable arrangement can be realized through a rotating shaft 16 and a bearing 15. In the figure, the punching component 10 is connected with a rotating shaft 16, and the rotating shaft is installed on the sliding seat 8 through a bearing 15. The punching component 10 swings relative to the sliding seat with the rotating shaft 16 as the center. The limiting component 6 is installed on the sliding seat 8 of the first adjusting component, and the material supporting plate 2 is arranged on the sliding seat of the second adjusting component 11. Synchronous wheels 17 are installed on the screw rods of both the first adjusting component and the second adjusting component. A synchronous belt 18 is provided on the synchronous wheels. When driving one screw rod to rotate, the synchronous wheel rotates, and through the synchronous belt, the other screw rod rotates synchronously. The rotation of the screw rod causes the sliding seat to move horizontally on the cross beam, thereby synchronously adjusting the positions of the punching component 20, the limiting component 6, and the material supporting plate 2. Above the material supporting plate 2, there is an upper baffle plate 3 for material stripping. The upper baffle plate is provided with a second channel through which the punching knife passes. When the punching knife retracts, the upper baffle plate 3 blocks the surrounding of the punching position of the coil material, so that the punching knife 5 is effectively separated from the coil material 1, avoiding the coil material being taken away by the punching knife 5. The upper baffle plate 3 is installed on the sliding seat of the first adjusting component 11. When adjusting the lateral position of the punching knife, the upper baffle plate moves accordingly to achieve the adjustment of the lateral position.

[0035] The limiting component 6 includes a buffer pad. The buffer pad is installed on the frame through a mounting plate. The buffer pad not only has the functions of shock absorption and noise reduction, but also reduces or avoids the rebound of the punching component, so that the punching component quickly stays at the punching station. If the coil material 1 is conveyed forward, then after punching, it will drive the punching knife 5 to swing forward. After the punching knife separates from the coil material, the punching knife swings backward. Then it is better that the limiting component 6 is arranged at the rear end of the punching component. When the punching component swings backward, the limiting component blocks the punching component and makes it stop at the punching station.

[0036] The reset of the punching component 10 can be achieved by its own gravity or by using a reset elastic member. In the attached drawings, the punching component is connected with a reset elastic member, and the elastic force of the reset elastic member can enable the punching component to reset more quickly. Moreover, the reset elastic member has a low cost, is convenient to replace, and can adjust or rotate the elastic force of the elastic member according to requirements. According to different installation positions, the reset elastic member can be a spring or a tension spring. In the figure, the upper end of the punching component 10 is connected to the rotating shaft 16, the reset elastic member is a tension spring 7, one end of the tension spring is connected to the lower end of the punching component 10, and the other end of the tension spring 7 is connected to a fixed point on the frame. If the punching component is swingably arranged on the sliding seat 8, the other end of the tension spring is connected to the sliding seat. Then, when the coiled material drives the punching component to tilt, the tension spring 7 is stretched; when the punching knife 5 is separated from the coiled material 1, the pulling force of the tension spring 7 causes the punching component to swing quickly in the reverse direction and reset.

[0037] The punching device further includes a sensor for detecting the position information of the coiled material, and both the sensor and the power component are connected to the controller. Color marks are printed on the coiled material. When the sensor detects the color marks, it sends the information to the controller, and the controller sends an instruction to the power component, and the power component then drives the punching knife to perform punching operations, thus accurately punching positions.

Claims

1. A punching device, characterized in that: It includes a punching component and a stopper for assisting the reset of the punching component to stay at the punching station, and the punching component is swingably arranged on the frame; The punching component includes a punching knife and a power member driving the punching knife to move, and the limiter is arranged at the punching station; Before punching, the punching component is arranged vertically and contacts the stopper, and the punching knife faces the coil; When punching, the power part drives the punching knife to move toward the coil and punch holes, and the continuously conveyed coil drives the punching part to swing relative to the frame; After punching, the power part drives the punching knife to reset, the punching knife is separated from the coil, and the punching part swings in the opposite direction to reset.

2. The punching device according to claim 1, characterized in that: The punching device also includes a sensor for detecting the position information of the coiled material, and the sensor and the power member are both connected to the controller.

3. The punching device according to claim 1, characterized in that: The punching component is connected with a resetting elastic member.

4. The punching device according to claim 3, characterized in that: The resetting elastic member is a tension spring, one end of which is connected to the lower end of the punching component, and the other end of which is connected to a fixed position on the frame.

5. The punching device according to claim 1, characterized in that: A supporting plate is provided below the punching component, and the supporting plate is provided with a first passage for the punching knife to pass through.

6. The punching device according to claim 5, characterized in that: An upper baffle is provided above the supporting plate, and a second passage for the punching knife to pass through is opened on the upper baffle.

7. The punching device according to claim 1, characterized in that: The limiting member includes a buffer pad, and the buffer pad is installed on the frame through a mounting plate.

8. The punching device according to claim 1, characterized in that: The frame is provided with a first adjusting component for adjusting the transverse position of the punching component and the limiting component; the frame is also provided with a second adjusting component for adjusting the transverse position of the supporting plate.

9. The punching device according to claim 8, characterized in that: The first adjusting component and the second adjusting component both include a slide and a screw, the screw is rotatably arranged on the frame and parallel to the crossbeam, the slide is slidably arranged on the crossbeam of the frame, and the slide is threadedly connected to the screw; The punching component is swingably arranged on the slide seat of the first adjusting component, the limiting member is installed on the slide seat of the first adjusting component, and the supporting plate is arranged on the slide seat of the second adjusting component; The screw rod of the first adjusting component and the screw rod of the second adjusting component are both installed with synchronous wheels, and the synchronous wheels are provided with synchronous belts.

10. A bag forming mechanism, characterized in that: It comprises a coil conveying device and a punching device according to any one of claims 1 to 9, wherein the coil conveying device continuously conveys the coil.

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