Punching device for EVA foam

Abstract

The utility model relates to the technical field of EVA foam punching equipment, and discloses an EVA foam punching device which comprises a workbench and a supporting frame arranged at the top of the workbench, and further comprises a placing table arranged on one side of the supporting frame, a hydraulic rod is connected to the top of the supporting frame in a bolted mode, and a stamping die is fixedly connected to an output shaft of the hydraulic rod; through cooperation of the connecting rod and the extrusion mechanism, the EVA foam can be limited when the stamping die is used for machining the EVA foam, the situation that the position of the EVA foam deviates when the stamping die is pressed downwards is effectively reduced, and therefore the accuracy and efficiency of the device are improved, and the production cost is reduced. And meanwhile, under cooperation of a protection plate, a limiting mechanism, a rotating rod and a torsion spring, a lower pressing shell at the bottom of the stamping die can be protected, the situation that dust is accumulated on the lower pressing shell at the bottom of the stamping die is effectively reduced, and therefore the situation that dust and dirt are attached to the surface of EVA foam along with descending of the lower pressing shell is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of EVA foam punching equipment, specifically to a punching device for EVA foam. Background Technology

[0002] Foam is a material made by foaming plastic particles. Foam is divided into PU foam, cross-linked PE, SBR, EPDM, etc. Foam has a series of characteristics such as elasticity, flexibility, ultra-thinness, and reliable performance. Among them, EVA foam is used in many aspects of daily life. In order to improve the practicality of foam, the foam material is usually punched.

[0003] However, existing EVA foam punching devices require operators to place the EVA foam on a placement plate before using a hydraulic rod to move the punching die downwards to punch the EVA foam. However, when the punching die presses down on the EVA foam at a certain speed and force, the EVA foam's position can shift, affecting the device's accuracy and efficiency. Furthermore, the punching die precisely punches the EVA foam through its bottom pressing shell. When the punching die is not in use, dust can drift into the pressing shell, accumulating over time and forming a thick layer of grime. When the punching die punches subsequent EVA foam, this dust and grime adhere to the surface of the EVA foam as the pressing shell descends. Utility Model Content

[0004] The purpose of this invention is to provide a punching device for EVA foam to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a punching device for EVA foam, comprising a worktable and a support frame disposed on the top of the worktable, and further comprising:

[0006] A placement platform is set on one side of the support frame. A hydraulic rod is bolted to the top of the support frame. The output shaft of the hydraulic rod is fixedly connected to a stamping die. A connecting rod is fixedly connected to the output shaft of the hydraulic rod. An extrusion mechanism is provided on one side of the connecting rod.

[0007] A protective plate is movably connected to the bottom of the stamping die. A rotating rod is fixedly connected to one side of the protective plate, and a torsion spring is fixedly connected to one side of the rotating rod. A limit mechanism is provided on one side of the protective plate.

[0008] Preferably, the extrusion mechanism includes a fixed housing fixedly connected to one end of the connecting rod, a compression spring fixedly connected to the inner cavity of the fixed housing, an extrusion block fixedly connected to the bottom of the compression spring, and the surface of the extrusion block slidably connected to the inner cavity of the fixed housing.

[0009] Preferably, the limiting mechanism includes a fixed rod fixedly connected to one side of the protective plate, a limiting plate slidably connected to the bottom of the fixed rod, a rotating shaft fixedly connected to the bottom of the limiting plate, and the bottom of the rotating shaft rotatably connected to the inner cavity of the worktable.

[0010] Preferably, the bottom of the workbench is bolted with a base, and the number of bases is four and they are designed symmetrically about the central axis of the workbench.

[0011] Preferably, a guide rod is fixedly connected to the inner cavity of the fixed shell, and the surface of the guide rod is slidably connected to the inner cavity of the extrusion block.

[0012] Preferably, there are two rotating shafts and limiting plates, which are located at both ends of the fixed rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention, through the cooperation of a connecting rod and an extrusion mechanism, enables the stamping die to limit the position of the EVA foam during processing, effectively reducing the positional displacement of the EVA foam caused by the stamping die pressing down. This improves the accuracy and efficiency of the device. At the same time, with the cooperation of the protective plate, limiting mechanism, rotating rod, and torsion spring, the lower pressure shell at the bottom of the stamping die can be protected, effectively reducing the accumulation of dust on the lower pressure shell at the bottom of the stamping die. This reduces the amount of dust and dirt adhering to the surface of the EVA foam as the lower pressure shell descends. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the workbench in this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting rod and hydraulic rod in this utility model;

[0018] Figure 4 This is a schematic diagram of the extrusion mechanism in this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting mechanism in this utility model.

[0020] In the diagram: 1. Workbench; 2. Support frame; 3. Hydraulic rod; 4. Stamping die; 5. Base; 6. Connecting rod; 7. Extrusion mechanism; 71. Fixed shell; 72. Compression spring; 73. Extrusion block; 8. Guide rod; 9. Protective plate; 10. Rotating rod; 11. Torsion spring; 12. Limiting mechanism; 121. Fixed rod; 122. Limiting plate; 123. Rotating shaft; 13. Placement table. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5As shown, an EVA foam punching device includes a worktable 1, which controls the operation of the device. A support frame 2 is mounted on the top of the worktable 1, and a placement platform 13 is mounted on one side of the support frame 2 for placing EVA foam. A hydraulic rod 3 is bolted to the top of the support frame 2, and a stamping die 4 is fixedly connected to the output shaft of the hydraulic rod 3. Under the action of the hydraulic rod 3, the stamping die 4 can move up and down on one side of the support frame 2, allowing the stamping die 4 to punch holes in the EVA foam on the top of the placement platform 13. Four bases 5 are bolted to the bottom of the worktable 1, symmetrically designed around the central axis of the worktable 1. The bases 5 support the device, enabling it to operate. A connecting rod 6 is fixedly connected to the output shaft of the hydraulic rod 3, and a pressing mechanism 7 is mounted on one side of the connecting rod 6. Under the action of the connecting rod 6, the pressing mechanism 7 can move up and down with the hydraulic rod 3, thereby pressing the EVA foam. The limit switch effectively prevents the EVA foam from shifting position when the stamping die 4 punches holes in the EVA foam, thereby improving the stability of the device during operation. A protective plate 9 is movably connected to the bottom of the stamping die 4, which can protect the bottom of the stamping die 4 and effectively reduce the accumulation of dust inside the stamping die 4, thereby improving the practicality of the device. A rotating rod 10 is fixedly connected to one side of the protective plate 9. The two ends of the rotating rod 10 are rotatably connected to the inner cavity of the worktable 1. A torsion spring 11 is fixedly connected to one side of the rotating rod 10, and the other end of the torsion spring 11 is fixedly connected to the inner cavity of the worktable 1. With the cooperation of the torsion spring 11 and the rotating rod 10, the protective plate 9 can rotate on one side of the stamping die 4, so that the stamping die 4 can work. A limit mechanism 12 is provided on one side of the protective plate 9. Under the action of the limit mechanism 12, the protective plate 9 can protect the stamping die 4 when the stamping die 4 is not in use, so that the protective plate 9 can work.

[0023] The extrusion mechanism 7 includes a fixed housing 71. The top of the fixed housing 71 is fixedly connected to one end of the connecting rod 6. A compression spring 72 is fixedly connected to the inner cavity of the fixed housing 71. An extrusion block 73 is fixedly connected to the bottom of the compression spring 72. The surface of the extrusion block 73 is slidably connected to the inner cavity of the fixed housing 71. Under the action of the connecting rod 6, the fixed housing 71 can move the extrusion block 73 downward, allowing the bottom of the extrusion block 73 to contact the top of the EVA foam. This causes the compression spring 72 to compress within the inner cavity of the fixed housing 71, allowing the extrusion block 73 to move into the inner cavity of the fixed housing 71. The device not only enables the stamping die 4 to work, but also limits the position of the extrusion block 73, effectively preventing the EVA foam from shifting during the operation of the stamping die 4, thereby improving the practicality of the device. The inner cavity of the fixed shell 71 is fixedly connected to the guide rod 8, and the surface of the guide rod 8 is slidably connected to the inner cavity of the extrusion block 73. The guide rod 8 is located at the center of the compression spring 72. Under the action of the guide rod 8, the position of the compression spring 72 is effectively prevented from shifting during operation, increasing the stability of the extrusion mechanism 7, thereby improving the stability of the device.

[0024] The limiting mechanism 12 includes a fixed rod 121, one side of which is fixedly connected to one side of the protective plate 9. A limiting plate 122 is slidably connected to the bottom of the fixed rod 121. A rotating shaft 123 is fixedly connected to the bottom of the limiting plate 122. The bottom of the rotating shaft 123 is rotatably connected to the inner cavity of the worktable 1. There are two rotating shafts 123 and two limiting plates 122, which are located at the two ends of the fixed rod 121 respectively. Under the action of the rotating shaft 123, the limiting plate 122 can rotate at the bottom of the fixed rod 121. When the top of the limiting plate 122 contacts the bottom of the fixed rod 121, the protective plate 9 can protect the bottom of the stamping die 4, effectively reducing the accumulation of dust inside the stamping die 4, thereby improving the effect of the device on the subsequent stamping of EVA foam.

[0025] Working principle: When the operator needs to use the stamping die 4, the operator rotates the limiting plate 122 by rotating the shaft 123, causing the limiting plate 122 and the fixed rod 121 to interlock. Under the action of the torsion spring 11, the rotating rod 10 can drive the protective plate 9 to rotate away from the stamping die 4 on one side of the worktable 1. Then, the operator places the EVA foam on the top of the placement table 13. When the operator needs to punch holes in the EVA foam using the stamping die 4, the hydraulic rod 3... The stamping die 4 moves downward, and at the same time, the hydraulic rod 3, through the connecting rod 6, causes the fixed shell 71 to move the extrusion block 73 downward. The bottom of the extrusion block 73 contacts the top of the EVA foam, allowing the extrusion block 73 to drive the compression spring 72 to compress within the cavity of the fixed shell 71, thus extruding the EVA foam. Subsequently, the hydraulic rod 3 punches holes in the EVA foam through the stamping die 4. After punching, the worker removes the EVA foam and places in a new EVA foam that needs to be punched.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A punching device for EVA foam, comprising a worktable (1) and a support frame (2) disposed on the top of the worktable (1), characterized in that, Also includes: A placement platform (13) is set on one side of the support frame (2). A hydraulic rod (3) is bolted to the top of the support frame (2). A stamping die (4) is fixedly connected to the output shaft of the hydraulic rod (3). A connecting rod (6) is fixedly connected to the output shaft of the hydraulic rod (3). An extrusion mechanism (7) is set on one side of the connecting rod (6). A protective plate (9) is movably connected to the bottom of the stamping die (4). A rotating rod (10) is fixedly connected to one side of the protective plate (9). A torsion spring (11) is fixedly connected to one side of the rotating rod (10). A limit mechanism (12) is provided on one side of the protective plate (9).

2. The punching device for EVA foam according to claim 1, characterized in that: The extrusion mechanism (7) includes a fixed shell (71) fixedly connected to one end of the connecting rod (6). A compression spring (72) is fixedly connected to the inner cavity of the fixed shell (71). An extrusion block (73) is fixedly connected to the bottom of the compression spring (72). The surface of the extrusion block (73) is slidably connected to the inner cavity of the fixed shell (71).

3. The punching device for EVA foam according to claim 1, characterized in that: The limiting mechanism (12) includes a fixed rod (121) fixedly connected to one side of the protective plate (9). The bottom of the fixed rod (121) is slidably connected to a limiting plate (122). The bottom of the limiting plate (122) is fixedly connected to a rotating shaft (123). The bottom of the rotating shaft (123) is rotatably connected to the inner cavity of the worktable (1).

4. The punching device for EVA foam according to claim 1, characterized in that: The bottom of the workbench (1) is bolted with a base (5), and there are four bases (5) which are symmetrically designed with respect to the central axis of the workbench (1).

5. The punching device for EVA foam according to claim 2, characterized in that: The inner cavity of the fixed shell (71) is fixedly connected to a guide rod (8), and the surface of the guide rod (8) is slidably connected to the inner cavity of the extrusion block (73).

6. The punching device for EVA foam according to claim 3, characterized in that: There are two rotating shafts (123) and limiting plates (122), which are located at both ends of the fixing rod (121).

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