Pressing structure in EVA cutting machine
By designing a pressure structure in the EVA cutting machine that allows for adjusting the compression of the spring by sliding the limit plate, the problem of inconvenient adjustment of the pressure plate's elasticity is solved, improving cutting accuracy and ease of operation while reducing equipment space occupation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU SHANJIANG RUBBER & PLASTIC CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-26
AI Technical Summary
In existing EVA cutting machines, the spring force adjustment of the pressure plate is inconvenient, affecting cutting accuracy and displacement, and making it difficult to adapt to the needs of different sheet thicknesses.
A pressing structure including a fixed plate, a connecting plate, a pressing block, and a limiting plate was designed. The spring compression is adjusted by sliding the limiting plate up and down to achieve elastic force adjustment. Combined with the cooperation of the guide rod and the spring, it is ensured that the pressing block applies appropriate force to the EVA sheet.
It achieves convenient and precise elasticity adjustment, improves cutting accuracy, reduces space occupation, and has a simple structure and is easy to operate.
Smart Images
Figure CN224407784U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical technology and relates to an EVA cutting machine, particularly a pressing structure in an EVA cutting machine. Background Technology
[0002] EVA strips are generally produced by unwinding and cutting EVA sheets. This process involves cutting equipment, the structure of which is illustrated in a cutting device for rubber conveyor belt production disclosed in the Chinese Patent Database (application number: 202021493035.0). This device includes a conveyor frame; a set of feed rollers and a set of discharge rollers are fixedly installed on the inner surface of the conveyor frame; a support platform is fixedly installed on the conveyor frame at the position between the feed rollers and the discharge rollers; an electronic meter counter is fixedly installed on one side of the conveyor frame, corresponding to the front side of the feed rollers; and a set of auxiliary electric push rods are fixedly connected to both sides of the conveyor frame, corresponding to the positions of the feed rollers; and a drive mechanism is fixedly connected to the top of each of the two sets of auxiliary electric push rods. The drive seat has two sets of first damping buffer tubes symmetrically mounted on one surface; a pressure seat is connected to one surface of the drive seat through the first damping buffer tubes; a set of pressure rollers is rotatably connected between the inner surfaces of the pressure seats; a knife holder is fixedly connected to the top surface of the conveying frame; two symmetrically arranged guide rods are fixedly connected between the opposite surfaces of the knife holder; two symmetrically arranged main electric push rods are mounted on one surface of the knife holder; a movable seat is slidably connected to the periphery of the two guide rods; the piston ends of the two main electric push rods are fixedly connected to the movable seat; a cutting blade is fixedly connected to the bottom surface of the movable seat; two sets of second damping buffer tubes are also fixedly connected to one surface of the movable seat; a pressure plate is fixedly connected to the piston ends of both sets of second damping buffer tubes.
[0003] In the aforementioned cutting device, a pressure plate presses onto the sheet material, which is then cut by a cutting blade. Since both EVA and rubber possess good elasticity, excessive pressure from the pressure plate can cause excessive deformation, affecting cutting accuracy. Conversely, insufficient pressure can lead to cutting displacement, also impacting accuracy. Therefore, in practical use, the elastic force applied to the pressure plate needs to be adjusted according to different sheet thicknesses. However, in the aforementioned device, the second damping buffer tube is an integral structure, making it inconvenient to adjust the elastic force applied to the pressure plate. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a pressing structure in an EVA cutting machine that facilitates adjustment of spring force.
[0005] The objective of this utility model can be achieved through the following technical solution: The pressing structure in the EVA cutting machine includes a fixed plate, a connecting plate, and a pressing block arranged sequentially from top to bottom. The fixed plate is provided with a driving component for driving the connecting plate to rise and fall. The top wall of the pressing block has vertically arranged guide rods, and there are multiple guide rods distributed along the length of the pressing block. The connecting plate has vertically penetrating guide holes of the same number as the guide rods, and each guide rod is slidably arranged in the corresponding guide hole. A limiting plate is horizontally arranged between the connecting plate and the fixed plate. The limiting plate is connected to the fixed plate through a connecting structure so that the limiting plate can slide up and down and be locked in the sliding position. A limiting component is fixed in the lower end of each guide hole. A spring is sleeved on the upper end of each guide rod. An annular seat is formed on the outer wall of the middle part of the guide rod. The two ends of the spring act on the limiting plate and the corresponding annular seat respectively. Under the action of the spring, the bottom wall of the annular seat presses against the limiting component.
[0006] During installation, the cutting blade is fixed to one side of the connecting plate and positioned slightly higher than the bottom wall of the pressure block. During cutting, the drive unit moves the fixed plate downward, and the pressure block, with the cooperation of the guide rod and spring, moves downward with the fixed plate and presses onto the EVA sheet. As the fixed plate continues to move downward, the cutting blade acts on the EVA sheet, completing the cutting operation.
[0007] The limiting plate can adjust its own position height by sliding up and down, thereby adjusting the compression of all springs at once. This is used to adjust the force applied by the springs to the corresponding pressure blocks, ensuring that the pressure blocks apply a suitable force to the EVA sheet. It has the advantages of convenient and easy adjustment.
[0008] In the pressing structure of the aforementioned EVA cutting machine, the limiting plate includes a horizontally arranged plate-shaped main body, which is connected to the fixed plate via the aforementioned connecting structure. Vertical columnar portions matching guide holes are formed on the bottom wall of the plate-shaped main body. The number of columnar portions and guide holes is the same, with each columnar portion inserted into a corresponding guide hole, and the upper end of a spring pressing against the corresponding columnar portion. The columnar portions and guide holes cooperate to guide the sliding of the limiting plate, making the sliding of the limiting plate more precise and faster, and effectively facilitating the adjustment of the limiting plate position.
[0009] In the pressing structure of the aforementioned EVA cutting machine, vertical through holes are vertically pierced through the top wall of the plate-shaped main body. The number of through holes is the same as that of the columnar parts, and each through hole extends to the bottom wall of the corresponding columnar part. The upper end of the guide rod is inserted into the corresponding through hole. By adopting the above design, the height of the entire pressing structure can be shortened by reducing the height of the connecting plate, thereby reducing the space occupied.
[0010] In the pressing structure of the EVA cutting machine described above, the limiting component is a positioning sleeve fitted on the guide rod. The positioning sleeve has an opening on one side, and the guide rod can extend into the positioning sleeve through the opening to facilitate the installation of the positioning sleeve.
[0011] In the pressing structure of the EVA cutting machine described above, the guide rod and the pressing block are an integrated structure.
[0012] In the pressing structure of the EVA cutting machine described above, the positioning sleeve and the connecting plate are fixedly connected by welding.
[0013] In the pressing structure of the aforementioned EVA cutting machine, the connecting structure includes a screw vertically fixed to the top of the plate-shaped main body. A connecting hole is passed through the fixed plate for the upper end of the screw to pass through. Two pressure caps are screwed onto the screw, and the two pressure caps press against the upper and lower sides of the fixed plate respectively. The fixed plate is controlled to be in a locked or sliding state by rotating the pressure caps. This design has advantages such as simple structure and convenient operation.
[0014] As another option, in the pressing structure of the EVA cutting machine mentioned above, the connecting structure includes a threaded hole 1 that runs vertically through the fixed plate, and a corresponding threaded hole 2 on the plate-shaped body, with the same bolt threaded into both threaded hole 1 and threaded hole 2.
[0015] Compared with existing technologies, the pressing structure in this EVA cutting machine has the following advantages:
[0016] 1. The limiting plate can adjust its own position height by sliding up and down, thereby adjusting the compression of all springs at once. This is used to adjust the force applied by the springs to the corresponding pressure blocks, ensuring that the pressure blocks apply a suitable force to the EVA sheet. It has the advantages of convenient and easy adjustment.
[0017] 2. The columnar part and the guide hole cooperate to guide the sliding of the limiting plate, making the sliding of the limiting plate more precise and faster, and effectively facilitating the adjustment of the position of the limiting plate. Attached Figure Description
[0018] Figure 1 This is a three-dimensional schematic diagram of the pressing structure in this EVA cutting machine.
[0019] Figure 2 This is a diagram showing the usage status of the pressing structure in this EVA cutting machine.
[0020] Figure 3 This is a cross-sectional schematic diagram of the pressing structure in this EVA cutting machine.
[0021] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.
[0022] In the diagram, 1. Fixed plate; 2. Connecting plate; 2a. Guide hole; 3. Pressure block; 3a. Guide rod; 3b. Ring seat; 4. Driving component; 5. Limiting plate; 5a. Plate-shaped main body; 5b. Columnar part; 5c. Through hole; 6. Limiting component; 7. Spring; 8. Cutting blade; 9. Connecting seat; 10. Screw; 11. Pressure cap. Detailed Implementation
[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0024] Example 1: As Figure 1 As shown, the pressing structure in this EVA cutting machine includes a fixed plate 1, a connecting plate 2, and a pressing block 3 arranged sequentially from top to bottom. All three components—fixed plate 1, connecting plate 2, and pressing block 3—are elongated and horizontally positioned. In actual use, the fixed plate 1 is in a fixed state.
[0025] Specifically
[0026] The fixed plate 1 is equipped with a driving component 4 for driving the connecting plate 2 to rise and fall. The top wall of the pressure block 3 has vertically arranged guide rods 3a, with multiple guide rods 3a arranged side-by-side at intervals along the length of the pressure block 3. Figures 1 to 3 As shown, the connecting plate 2 has vertically penetrating guide holes 2a, the same number as the guide rods 3a. The guide holes 2a and guide rods 3a are positioned one-to-one, and each guide rod 3a is slidably disposed in the corresponding guide hole 2a. A limiting plate 5 is horizontally provided between the connecting plate 2 and the fixing plate 1. The limiting plate 5 is connected to the fixing plate 1 through a connecting structure so that the limiting plate 5 can slide up and down and be locked in the sliding position. A limiting element 6 is fixed in the lower end of each guide hole 2a, and a spring 7 is sleeved on the upper end of each guide rod 3a. An annular seat 3b is formed on the outer wall of the middle part of the guide rod 3a, and the annular seat 3b and the guide rod 3a are coaxially arranged. The two ends of the spring 7 act on the limiting plate 5 and the corresponding annular seat 3b, respectively, and under the action of the spring 7, the bottom wall of the annular seat 3b presses against the limiting element 6.
[0027] During installation, the cutting blade is fixed on one side of the connecting plate 2, and its position is slightly higher than the bottom wall of the pressure block 3. When cutting, the driving component 4 drives the fixing plate 1 to move down, and the pressure block 3 moves down with the fixing plate 1 under the cooperation of the guide rod 3a and the spring 7, pressing on the EVA sheet. As the fixing plate 1 continues to move down, the cutting blade acts on the EVA sheet, completing the cutting operation.
[0028] The limiting plate 5 can adjust its own position height by sliding up and down, thereby adjusting the compression of all springs 7 at once. This is used to adjust the force applied by the springs 7 to the corresponding pressure block 3, so as to ensure that the pressure block 3 applies a suitable force to the EVA sheet. It has the advantages of convenient and easy adjustment.
[0029] In this embodiment,
[0030] The annular seat 3b and the guide hole 2a are connected by a circumferential surface to ensure that the pressure block 3 slides up and down stably.
[0031] The type of driving component 4 is a telescopic cylinder, which includes a cylinder body and a piston rod. The cylinder body is fixedly mounted on the fixed plate 1, and the piston rod is fixedly connected to the connecting plate 2 through the connecting seat 9.
[0032] like Figure 2 , Figure 3 and Figure 4 As shown, the limiting plate 5 includes a horizontally arranged plate-shaped body 5a, which is connected to the fixed plate 1 via the aforementioned connecting structure. In the actual product, the plate-shaped body 5a has a vertically penetrating clearance hole in the middle for the connecting seat 9 to pass through. Vertically formed columnar portions 5b matching guide holes 2a are formed on the bottom wall of the plate-shaped body 5a. The number of columnar portions 5b and guide holes 2a are the same, and their positions correspond one-to-one. Each columnar portion 5b is inserted into the corresponding guide hole 2a, and the upper end of the spring 7 presses against the corresponding columnar portion 5b. The columnar portions 5b and guide holes 2a cooperate to guide the sliding of the limiting plate 5, making the sliding of the limiting plate 5 more precise and faster, and effectively facilitating the adjustment of the position of the limiting plate 5.
[0033] To further explain, a through hole 5c is vertically penetrating the top wall of the plate-shaped main body 5a. The number of through holes 5c and the columnar parts 5b are the same, and their positions correspond one-to-one. Each through hole 5c extends to the bottom wall of the corresponding columnar part 5b, and the upper end of the guide rod 3a is inserted into the corresponding through hole 5c. With the above design, the height of the entire pressing structure can be shortened by reducing the height of the connecting plate 2, thereby reducing the space occupied.
[0034] The connection structure is as follows: it includes a screw 10 vertically fixed to the top of the plate-shaped main body 5a; a connecting hole through which the upper end of the screw 10 passes on the fixing plate 1; two pressure caps 11 are screwed onto the screw 10, and the two pressure caps 11 press against the upper and lower sides of the fixing plate 1 respectively. The fixing plate 1 is controlled to be in a locked or sliding state by rotating the pressure caps 11, which has the advantages of simple structure and convenient operation. Preferably, the screw 10 and the plate-shaped main body 5a are fixedly connected by welding.
[0035] In the actual product, the guide rod 3a and the pressure block 3 are an integral structure. In this case, the limiting member 6 is a positioning sleeve that is fitted onto the guide rod 3a. The positioning sleeve has an opening on one side, and the guide rod 3a can extend into the positioning sleeve through this opening to facilitate the installation of the positioning sleeve. Of course, the solution of "the limiting member 6 is a positioning block fixed in the guide hole 2a, and the positioning block is located on the side corresponding to the guide rod 3a" is also acceptable.
[0036] The preferred positioning sleeve and the connecting plate 2 are fixed together by welding.
[0037] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1. The difference is that the connection structure includes a threaded hole 1 that runs vertically through the fixed plate 1, and a corresponding threaded hole 2 on the plate-shaped body 5a. The same bolt is screwed into both threaded hole 1 and threaded hole 2.
[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A pressing structure in an EVA cutting machine, comprising a fixed plate (1), a connecting plate (2), and a pressing block (3) arranged sequentially from top to bottom, wherein the fixed plate (1) is provided with a driving component (4) for driving the connecting plate (2) to rise and fall, and the pressing block (3) has vertically arranged guide rods (3a) on its top wall, wherein there are multiple guide rods (3a) distributed along the length of the pressing block (3), characterized in that, The connecting plate (2) has vertically penetrating guide holes (2a) of the same number as the guide rods (3a), and each guide rod (3a) is slidably set in the corresponding guide hole (2a); a limiting plate (5) is horizontally provided between the connecting plate (2) and the fixing plate (1), and the limiting plate (5) is connected to the fixing plate (1) through a connecting structure so that the limiting plate (5) can slide up and down and be locked in the sliding position; a limiting component (6) is fixed in the lower end of each guide hole (2a), and a spring (7) is sleeved on the upper end of each guide rod (3a). An annular seat (3b) is formed on the outer wall of the middle part of the guide rod (3a), and the two ends of the spring (7) act on the limiting plate (5) and the corresponding annular seat (3b) respectively, and under the action of the spring (7), the bottom wall of the annular seat (3b) presses against the limiting component (6).
2. The pressing structure in the EVA cutting machine according to claim 1, characterized in that, The aforementioned limiting plate (5) includes a horizontally arranged plate-shaped body (5a), and the plate-shaped body (5a) is connected to the fixing plate (1) through the aforementioned connecting structure; the bottom wall of the plate-shaped body (5a) has a vertically formed columnar part (5b) that matches the guide hole (2a), the number of columnar parts (5b) and guide holes (2a) is the same, each columnar part (5b) is inserted into the corresponding guide hole (2a), and the upper end of the spring (7) presses against the corresponding columnar part (5b).
3. The pressing structure in the EVA cutting machine according to claim 2, characterized in that, A through hole (5c) is vertically penetrating the top wall of the plate-shaped main body (5a). The number of through holes (5c) is the same as that of the columnar part (5b). Each through hole (5c) extends to the bottom wall of the corresponding columnar part (5b), and the upper end of the guide rod (3a) is inserted into the corresponding through hole (5c).
4. The pressing structure in the EVA cutting machine according to claim 1, characterized in that, The aforementioned limiting member (6) is a positioning sleeve fitted on the guide rod (3a). The positioning sleeve has an opening on one side, and the guide rod (3a) can extend into the positioning sleeve through the opening.
5. The pressing structure in the EVA cutting machine according to claim 4, characterized in that, The guide rod (3a) and the pressure block (3) are an integral structure.
6. The pressing structure in the EVA cutting machine according to claim 4, characterized in that, The positioning sleeve and the connecting plate (2) are fixed together by welding.
7. The pressing structure in the EVA cutting machine according to claim 2, characterized in that, The connecting structure includes a screw (10) that is vertically fixed to the top of the plate-shaped main body (5a). A connecting hole is provided through the fixing plate (1) for the upper end of the screw (10) to pass through. Two pressure caps (11) are screwed onto the screw (10), and the two pressure caps (11) press against the upper and lower sides of the fixing plate (1) respectively.
8. The pressing structure in the EVA cutting machine according to claim 2, characterized in that, The connecting structure includes a threaded hole 1 that runs vertically through the fixed plate (1), and a corresponding threaded hole 2 on the plate-shaped body (5a), with the same bolt threaded into both the threaded hole 1 and the threaded hole 2.