Punching device for EVA foam

By fixing the position of the foam with a conveyor belt and a limiting sleeve, and combining it with an ejector rod to automatically remove waste material, the EVA foam punching device solves the problems of large foam rolling in horizontal punching and manual intervention, and achieves efficient continuous processing.

CN223820674UActive Publication Date: 2026-01-23SUZHOU KAIJIA PACKAGING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520423340.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-12
Publication Date
2026-01-23
Estimated Expiration
2035-03-12

AI Technical Summary

Technical Problem

Large cylindrical EVA foams tend to roll during horizontal punching, requiring manual fixing and handling, which affects processing efficiency and makes waste removal inconvenient.

Method used

An EVA foam punching device was designed, comprising a conveyor belt, a limiting sleeve, and an ejector rod. The foam is conveyed by the conveyor belt and its position is fixed by the limiting sleeve. The ejector rod automatically removes waste material, enabling continuous punching and efficient processing.

Benefits of technology

This technology enables continuous punching of foam, improving processing efficiency, reducing manual intervention, ensuring punching quality and positional accuracy, and enhancing overall production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a punching device for EVA foam, and relates to the technical field of punching devices. According to the technical scheme, the foam punching machine is characterized by comprising a machine body and punching rods connected to the machine body in a sliding mode, a transmission table is placed on one side of the machine body, a conveying belt is arranged on the peripheral wall of the transmission table, a plurality of containing rods are arranged on the surface of the conveying belt, and containing spaces for containing foam are formed between the adjacent containing rods; the side, close to the conveying belt, of the punching rod is fixedly connected with a limiting sleeve for limiting left-right rotation of the foam, the limiting sleeve is slidably connected to the peripheral wall of the containing rod, and a push-out rod for pushing out waste is slidably connected into the punching rod. According to the foam punching device, limitation of foam in the punching process is guaranteed through the arrangement of the containing rod, the limiting sleeve and the limiting plate, the foam is prevented from rolling in the punching process, a worker can conduct feeding and discharging operation in the punching process, and the punching quality and the punching efficiency are guaranteed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to punch device technical field, more specifically, it relates to a punch device of EVA bubble cotton. BACKGROUND

[0002] The punch device is a kind of mechanical equipment, which is driven by power mechanism after raw material is installed, and punch die acts on material to complete punching.

[0003] Some bubble cottons are large in volume and cylindrical, so when punching, horizontal puncher is used to let bubble cotton fall down and then punch, but because cylindrical bubble cotton rolls after lying down, so it needs to be fixed before punching, but bubble cotton feeding and discharging need to be carried by workers, and the carrying process needs to be carried out in the state of stop, so continuous punching operation cannot be carried out, and after punching, workers also need to take out waste in punch die, which affects processing efficiency.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a punch device for EVA bubble cotton.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: the punch device for EVA bubble cotton includes a machine body and a punch rod slidingly connected to the machine body, a transmission table is placed on one side of the machine body, a conveyor belt is arranged on the outer peripheral wall of the transmission table, a plurality of placing rods are arranged on the surface of the conveyor belt, and a placing space for accommodating bubble cotton is formed between adjacent placing rods; a limiting sleeve for limiting the left and right rotation of bubble cotton is fixedly connected to the side of the punch rod close to the conveyor belt; the limiting sleeve is slidingly connected to the outer peripheral wall of the placing rod; and a push rod for pushing out waste is slidingly connected in the punch rod.

[0007] The utility model is further provided with a placing groove for accommodating the placing rod on the surface of the conveyor belt, the width of the placing groove is greater than the diameter of the placing rod, the cross-sectional shape of the limiting sleeve is arc-shaped with the opening facing downward, and a limiting plate abutting against bubble cotton is fixedly connected to the top surface of the limiting sleeve.

[0008] The utility model is further provided with that the length of the limiting sleeve is less than the length of the placing rod, and the distance between the end of the limiting sleeve close to the transmission table and the transmission table is less than the distance between the end of the punch rod close to the transmission table and the punch rod.

[0009] The present invention is further configured such that: the length of the punching rod is greater than the length of the transmission table, a connecting rod is fixedly connected to the side of the limiting sleeve away from the transmission table, and the other end of the connecting rod is fixedly connected to the end of the punching rod away from the transmission table.

[0010] The present invention is further configured such that: a housing is provided on the side of the machine body away from the transmission table, a cylinder is provided inside the housing, the output end of the cylinder abuts against the end face of the punching rod away from the transmission table, a through hole is provided inside the punching rod, and the push rod extends into the through hole and is configured as an electric telescopic rod.

[0011] The present invention is further configured such that: a storage box for accommodating foam is provided at one end of the transmission table along its length, and a storage box for accommodating waste is placed on the side of the transmission table away from the punching rod.

[0012] In summary, this utility model has the following beneficial effects: when the conveyor belt moves the foam to the position corresponding to the punching rod, the punching rod performs a punching operation on the foam. At this time, it does not affect the worker from placing the new foam in the placement space, allowing the punching process to be carried out continuously. Moreover, the limiting sleeve and limiting plate can limit the displacement of the laid-down foam during the punching process, ensuring the positional accuracy of the punching. After the punching is completed, the ejector rod pushes out the waste material in the punching rod, which not only saves manpower but also improves work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a cross-sectional view of the present invention;

[0016] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0017] In the diagram: 1. Machine body; 2. Punching rod; 3. Transmission table; 4. Conveyor belt; 5. Placement rod; 6. Restriction sleeve; 7. Placement slot; 8. Restriction plate; 9. Connecting rod; 10. Chassis; 11. Storage box one; 12. Storage box two; 13. Push-out rod; 14. Through hole. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] A punching device for EVA foam, such as Figures 1-3As shown, the device includes a body 1 and a punching rod 2 slidably connected to the body 1. A transmission table 3 is placed on one side of the body 1. A conveyor belt 4 is provided on the outer peripheral wall of the transmission table 3. The conveyor belt 4 wraps around the transmission table 3. A placement groove 7 is opened on the surface of the conveyor belt 4. A placement rod 5 is glued into the placement groove 7. The glued placement rod 5 can ensure that it will not fall off when the conveyor belt 4 rotates to the underside of the transmission table 3. A placement space for accommodating foam is formed between adjacent placement rods 5. By placing the foam in the placement space, the position of the foam can be fixed, preventing it from rolling left and right during movement. A limiting sleeve 6 is provided on the side of the punching rod 2 near the conveyor belt 4 to limit the position of the placement rod 5. The limiting sleeve 6 is slidably connected to the outer peripheral wall of the placement rod 5. After the limiting sleeve 6 is fitted on the placement rod 5, it limits the position of the foam, ensuring that the punching position of different foams is certain, thus ensuring the punching quality.

[0020] like Figure 2 and Figure 3 As shown, the width of the placement groove 7 is greater than the width of the placement rod 5, and there is a certain sliding space between the side wall of the placement groove 7 and the diameter of the placement rod 5. The cross-sectional shape of the limiting sleeve 6 is an arc with the opening facing downwards. Therefore, the existence of the distance between the placement groove 7 and the placement rod 5 ensures that after the limiting sleeve 6 is fitted onto the placement rod 5, the limiting sleeve 6 can be located within the sliding space, avoiding the situation where the outer peripheral wall of the limiting sleeve 6 abuts against the side wall of the placement groove 7 during the sliding process, thus affecting the sliding. The length of the limiting sleeve 6 is less than the length of the placement rod 5. The distance between the end of the limiting sleeve 6 near the transmission sleeve and the transmission sleeve is less than the distance between the end of the punching rod 2 near the transmission table 3 and the punching rod 2. Therefore, it can be ensured that the transmission sleeve first restricts the placement rod 5, and then the punching rod 2 punches the foam, avoiding the situation where the foam is punched during the punching process. The foam rolls left and right under the pressure applied by the punching rod 2, ensuring the punching quality. Although the length of the limiting sleeve 6 is less than the length of the placement rod 5, it can still restrict the position of the foam, preventing it from sliding to the left or back, thus ensuring the overall punching quality of the structure. The top surface of the limiting sleeve 6 is welded with a limiting plate 8 that abuts against the outer peripheral wall of the foam. The setting of the limiting plate 8 increases the height of the limiting sleeve 6 and the contact area with the foam, further strengthening the limiting effect of the limiting sleeve 6 on the foam. Since there are multiple placement spaces, when one foam is being punched, the worker can place the new foam to be processed in another placement space. After punching is completed, the new foam will move to the processing position without the need for the worker to stop the machine to replace the foam, ensuring processing efficiency and quality.

[0021] like Figure 1 and Figure 3As shown, the length of the punching rod 2 is greater than the length of the transmission table 3. A connecting rod 9 is welded to the side of the limiting sleeve 6 away from the transmission table 3. The other end of the connecting rod 9 is welded to the end of the punching rod 2 away from the transmission table 3. Because the length of the punching rod 2 is relatively large, and the length of the foam that has fallen down is the same as the width of the transmission table 3, when the punching rod 2 is fully inserted into the foam, a section of the punching rod 2 is still exposed to the air. The connecting rod 9 is welded to this section of the punching rod 2 that is exposed to the air. The central axis of the connecting rod 9 coincides with the central axis of the limiting sleeve 6, thus avoiding the situation where the connecting rod 9 abuts against the foam during the sliding process. Furthermore, the length of the connecting rod 9 is greater than the length of the foam after it has fallen down, thus avoiding the situation where the connecting rod 9 as a whole abuts against the foam during the punching process, which would prevent the punching rod 2 from completely penetrating the foam, ensuring the punching quality.

[0022] like Figures 1-3 As shown, a storage box 11 is provided at one end of the transmission table 3 along its length. The storage box 11 is used to store the foam after punching. The height of the storage box 11 is lower than that of the transmission table 3. In actual use, the width of the storage box 11 can be increased to accommodate more foam. Since the limiting plate 8 is slidably connected to the placement rod 5, when the foam is punched, the limiting sleeve 6 drives the limiting plate 8 to slide off the placement rod 5. Since the placement rod 5 itself is low, when the conveyor belt 4 moves the foam on the transmission table 3 to the end of the transmission table 3 near the storage box 11, the foam will rotate downwards around the placement rod 5 under its own gravity and fall into the storage box 11. There is no need for the worker to stop the machine and manually remove the punched foam from the conveyor belt 4, which ensures the overall processing efficiency of the device.

[0023] like Figure 1 , Figure 3 and Figure 4As shown, a housing 10 is installed on the side of the machine body 1 away from the transmission table 3. A cylinder for driving the punching rod 2 to slide is installed inside the housing 10. The side of the punching rod 2 away from the transmission table 3 is closed, so the output end of the cylinder can be connected to the end face of the punching rod 2 away from the transmission table 3. Therefore, the cylinder can drive the punching rod 2 to perform reciprocating linear motion. A through hole 14 communicating with the interior of the punching rod 2 is provided on the side of the punching rod 2 away from the transmission table 3. One end of the push rod 13 is fixed inside the machine body 1 by bolts, and the other end of the push rod 13 passes through the through hole 14. Since the push rod 13 is electrically... The telescopic rod allows for increased length of the push rod 13 after punching, while the punching rod 2 remains inside the foam. This pushes out the foam waste from the punching rod 2. Since a storage box 2 12 for holding waste is placed on the side of the transmission table 3 away from the punching rod 2, and the central axis of the storage box 2 12 in the length direction coincides with the central axis of the punching rod 2, the waste will stably fall into the storage box 2 12 after the push rod 13 pushes out the waste from the punching rod 2. The push rod 13 eliminates the need for workers to manually remove the waste from the punching rod 2, further improving the processing efficiency of the device.

[0024] Working principle: First, the conveyor belt 4 is started, causing it to rotate around the transmission table 3. Then, workers place several pieces of foam between adjacent placement rods 5, allowing the foam to move with the rotation of the conveyor belt 4 to the position corresponding to the punching rod 2. At this time, the cylinder is activated, causing it to move the punching rod 2 towards the transmission table 3. During the movement of the punching rod 2, before it contacts the foam, the limiting sleeve 6 will cause the limiting plate 8 to be fitted onto the placement rod 5, thereby determining the position of the foam and allowing the foam to pass through the punching process. During the process, no left or right rolling occurs. When the cylinder drives the punching rod 2 to complete the punching of the foam, the length of the push rod increases and pushes the foam waste inside the punching rod 2, causing it to fall into the second collection box 12. After the waste is pushed out, the cylinder drives the punching rod 2 to slide out of the foam. When the limiting sleeve 6 comes off the placement rod 5, the conveyor belt 4 is restarted, causing the conveyor belt 4 to rotate and fall into the first collection box 11. This achieves the cycle of the foam punching process, improving work efficiency.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A punching device for EVA foam, comprising a body (1) and a punching rod (2) slidably connected to the body (1), characterized in that: A transmission platform (3) is placed on one side of the machine body (1). A conveyor belt (4) is provided on the outer peripheral wall of the transmission platform (3). Several placement rods (5) are provided on the surface of the conveyor belt (4). A placement space for accommodating foam is formed between adjacent placement rods (5). A limiting sleeve (6) that restricts the left and right rotation of the foam is fixedly connected to the side of the punching rod (2) near the conveyor belt (4). The limiting sleeve (6) is slidably connected to the outer peripheral wall of the placement rod (5). A push rod (13) for pushing out waste material is slidably connected inside the punching rod (2).

2. The punching device for EVA foam according to claim 1, characterized in that: The surface of the conveyor belt (4) is provided with a placement groove (7) for accommodating the placement rod (5). The width of the placement groove (7) is greater than the diameter of the placement rod (5). The cross-sectional shape of the limiting sleeve (6) is an arc shape with the opening facing downward. A limiting plate (8) that abuts against the foam is fixedly connected to the top surface of the limiting sleeve (6).

3. The punching device for EVA foam according to claim 1, characterized in that: The length of the limiting sleeve (6) is less than the length of the placement rod (5), and the distance between the end of the limiting sleeve (6) near the transmission table (3) and the transmission table (3) is less than the distance between the end of the punching rod (2) near the transmission table (3) and the punching rod (2).

4. The punching device for EVA foam according to claim 1, characterized in that: The length of the punching rod (2) is greater than the length of the transmission table (3). A connecting rod (9) is fixedly connected to the side of the limiting sleeve (6) away from the transmission table (3). The other end of the connecting rod (9) is fixedly connected to the end of the punching rod (2) away from the transmission table (3).

5. The punching device for EVA foam according to claim 1, characterized in that: A housing (10) is provided on the side of the machine body (1) away from the transmission table (3). A cylinder is provided inside the housing (10). The output end of the cylinder abuts against the end face of the punching rod (2) on the side away from the transmission table (3). A through hole (14) is provided inside the punching rod (2). The push rod (13) extends into the through hole (14) and is configured as an electric telescopic rod.

6. The punching device for EVA foam according to claim 1, characterized in that: One end of the transmission table (3) along its length is provided with a storage box (11) for holding foam, and a storage box (12) for holding waste is placed on the side of the transmission table (3) away from the punching rod (2).