Ethylene vinyl acetate (EVA) foam sheet circulating cutting device
By designing an equidistant adjustment and cutting mechanism, efficient equidistant cutting and synchronous cutting of EVA foam sheets were achieved, solving the problems of low precision and low efficiency of traditional cutting devices, and improving production efficiency and output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional cutting equipment is not precise and efficient when cutting EVA foam sheets, and requires frequent equipment replacement or adjustment, making it difficult to achieve small-size equal-division cutting.
An EVA foam sheet circulating cutting device was designed, which adopts an equidistant adjustment mechanism and a cutting mechanism. The cutting wheels are driven by a servo motor and distributed at equal intervals. The cutting blade is controlled by a cylinder to cut synchronously, realizing the one-time production of multiple foam materials of the same size.
It improves the cutting accuracy and efficiency of foam sheets, reduces the frequency of equipment adjustments, and increases production efficiency and output.
Smart Images
Figure CN224074526U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foam cutting technology, specifically an EVA foam sheet cyclic cutting device. Background Technology
[0002] EVA foam sheets, or ethylene-vinyl acetate copolymer foamed materials, are widely used in packaging, footwear, toys, building insulation, and automotive interiors due to their excellent cushioning, shock absorption, heat insulation, and sound absorption properties. In industrial production, in order to meet the needs of different application scenarios, EVA foam sheets are usually cut and joined to obtain products of specific sizes and shapes.
[0003] However, traditional cutting devices often have low cutting accuracy and low efficiency when cutting foam sheets. Furthermore, they require frequent changes or adjustments to the cutting equipment when cutting sheets of different widths, which not only increases the difficulty of operation but also reduces production efficiency. When dividing foam sheets into small equal sizes, different equipment needs to be switched, which is quite troublesome. Therefore, an EVA foam sheet circulating cutting device is needed to solve the existing shortcomings. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an EVA foam sheet circulating cutting device. Through the set equidistant adjustment mechanism, the width of the sheet can be adjusted equidistantly, so that the sheet can be cut at equal intervals, thereby improving the cutting efficiency of foam sheet. Through the set cutting mechanism, multiple foam materials of the same size can be obtained at one time, so that the foam cutting process can be completed on the same production line, increasing the output and speed of cutting sheet.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an EVA foam sheet circulating cutting device, comprising a base, a set of symmetrical support plates fixedly connected to the top of the base, and a guide frame fixedly connected to the top of the support plates, an equidistant adjustment mechanism provided at the bottom of the guide frame, and several cutting wheels fixedly connected to the bottom of the equidistant adjustment mechanism for adjusting the distance between the cutting wheels, a support frame fixedly connected to the top of the base, and a cutting mechanism movably connected to the inner side of the support frame for cutting the foam sheet.
[0006] The present invention is further configured such that the equidistant adjustment mechanism includes a fixed block, a movable block, a telescopic frame, and a drive rod. The movable blocks are symmetrically arranged, and the outer side of the drive rod is provided with a set of symmetrical threads. The drive rod passes through the movable block and is threadedly connected to the movable block. The movable block is located on the opposite side of the fixed block. The drive rod passes through the fixed block and is movably connected to the movable frame through a bearing. The bottom end of the fixed block is fixedly connected to the top end of the rotating shaft at the middle position of the telescopic frame, and the bottom end of the movable block is fixedly connected to the top end of the rotating shaft at the end of the telescopic frame.
[0007] The present invention is further configured such that the fixed block is fixedly connected to the inner side of the guide frame, and the moving block is slidably connected to the inner side of the guide frame; the driving rod is movably connected to the inner side of the guide frame through a bearing; a servo motor is fixedly connected to the outer side of the guide frame, and the output end of the servo motor is fixedly connected to the end of the driving rod.
[0008] The present invention is further configured such that a mounting bracket is fixedly connected to the bottom end of the rotating shaft of the telescopic frame, and a sleeve is fixedly connected to the shaft center of the cutting wheel. The cutting wheel is movably connected to the opposite side of the bottom end of the mounting bracket through the sleeve.
[0009] The present invention is further configured such that a control bar is movably connected to the opposite side of the support plate via a bearing, the control bar passes through the sleeve and is movably connected to the sleeve, and a servo motor II is fixedly connected to the outer side of the base, and the output end of the servo motor II is fixedly connected to the end of the control bar.
[0010] The present invention is further configured such that the cutting mechanism includes a cutting blade, a connecting block and a cylinder, both ends of the cutting blade are fixedly connected to the connecting block by bolts, and a set of symmetrical cylinders are fixedly connected to the support frame, and the telescopic ends of the cylinders are respectively fixedly connected to the top end of the connecting block.
[0011] The present invention is further configured such that the cutting blade is located inside the support frame, and both ends of the support frame are provided with sliding grooves, and the connecting blocks respectively movably pass through the sliding grooves.
[0012] Compared with existing technologies, this EVA foam sheet recycling cutting device has the following advantages:
[0013] 1. This utility model uses an equidistant adjustment mechanism to drive the mounting frame to move synchronously. Since the sleeve is movably connected to the mounting frame, it pushes the cutting wheel to move horizontally along the control bar, so that the cutting wheels are equidistantly distributed. It can adjust the equidistant distance according to the width of the sheet, so that the sheet can be cut at equal intervals, thereby improving the cutting efficiency of foam sheet.
[0014] 2. This utility model, through its cutting mechanism, allows the strip-shaped foam sheet to be cut simultaneously when it moves to the bottom of the support frame. The connecting block is controlled by a cylinder to move downward along the slide groove, causing the cutting blade to move downward synchronously. This allows multiple pieces of foam material of the same size to be obtained at once, enabling the foam cutting process to be completed on the same production line, thereby increasing the output and speed of the cutting sheet. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a schematic diagram illustrating the principle and structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the equidistant adjustment mechanism of this utility model;
[0018] Figure 4 This utility model Figure 2 A magnified structural diagram of point A in the middle.
[0019] In the diagram: 1. Base; 2. Support plate; 3. Guide frame; 4. Equidistant adjustment mechanism; 401. Fixed block; 402. Moving block; 403. Telescopic frame; 404. Drive rod; 5. Cutting wheel; 6. Support frame; 7. Cutting mechanism; 701. Cutting blade; 702. Connecting block; 703. Cylinder; 8. Servo motor one; 9. Mounting bracket; 10. Sleeve; 11. Control bar; 12. Servo motor two; 13. Slide groove. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0021] like Figure 1-4 As shown, this utility model provides a technical solution: an EVA foam sheet circulating cutting device, including a base 1, a set of symmetrical support plates 2 fixedly connected to the top of the base 1, and a guide frame 3 fixedly connected to the top of the support plates 2, an equidistant adjustment mechanism 4 provided at the bottom of the guide frame 3, and several cutting wheels 5 fixedly connected to the bottom of the equidistant adjustment mechanism 4 for adjusting the distance between the cutting wheels 5, a support frame 6 fixedly connected to the top of the base 1, and a cutting mechanism 7 movably connected to the inner side of the support frame 6 for cutting the foam sheet.
[0022] like Figure 1 , Figure 3 and Figure 4As shown, the equidistant adjustment mechanism 4 includes a fixed block 401, a movable block 402, a telescopic frame 403, and a drive rod 404. The movable blocks 402 are symmetrically arranged. A set of symmetrical threads is provided on the outer side of the drive rod 404. The drive rod 404 passes through the movable block 402 and is threadedly connected to the movable block 402. The movable block 402 is located on the opposite side of the fixed block 401. The drive rod 404 passes through the fixed block 401 and is movably connected to the movable frame via a bearing. The bottom end of the fixed block 401 is fixedly connected to the top end of the rotating shaft at the middle position of the telescopic frame 403, and the movable block 402... The bottom ends of the telescopic frame 403 are fixedly connected to the top of the end shaft of the telescopic frame 403. The fixed block 401 is fixedly connected to the inner side of the guide frame 3, and the moving block 402 is slidably connected to the inner side of the guide frame 3. The drive rod 404 is movably connected to the inner side of the guide frame 3 through the bearing. The outer side of the guide frame 3 is fixedly connected to the servo motor 8, and the output end of the servo motor 8 is fixedly connected to the end of the drive rod 404. The bottom ends of the shafts of the telescopic frame 403 are all fixedly connected to the mounting brackets 9. The shaft center of the cutting wheel 5 is fixedly connected to the sleeve 10. The cutting wheel 5 is movably connected to the opposite side of the bottom end of the mounting bracket 9 through the sleeve 10.
[0023] The servo motor 8 is started, which drives the drive rod 404 to rotate inside the guide frame 3. Since the drive rod 404 is threadedly connected to the moving block 402, the guide frame 3 restricts the movement direction of the drive rod 404, thereby controlling the moving blocks 402 to move closer or further apart. When the moving blocks 402 move further apart, the two ends of the telescopic frame 403 are pulled away in opposite directions, causing the telescopic frame 403 to unfold along the length of the guide frame 3. Since the pivot position of the telescopic frame 403 is fixed in the middle, the telescopic frame 403 unfolds to both ends with the pivot position in the middle, driving the mounting frame 9 to move synchronously. Since the sleeve 10 is movably connected to the mounting frame 9, the cutting wheel 5 is pushed to move horizontally along the control bar 11, so that the cutting wheels 5 are evenly distributed and can be evenly adjusted according to the width of the sheet, so that the sheet can be cut evenly, thereby improving the cutting efficiency of foam sheet.
[0024] like Figure 1 and Figure 2 As shown, a control bar 11 is movably connected to the opposite side of the support plate 2 via a bearing. The control bar 11 passes through the sleeve 10 and is movably connected to the sleeve 10. A servo motor 12 is fixedly connected to the outside of the base 1, and the output end of the servo motor 12 is fixedly connected to the end of the control bar 11. When the servo motor 12 is started, the control bar 11 is driven to rotate, thereby driving all the cutting wheels 5 to rotate synchronously and cut simultaneously along the length of the sheet, dividing it into strips of equal width.
[0025] like Figure 1 and Figure 2As shown, the cutting mechanism 7 includes a cutting blade 701, a connecting block 702, and a cylinder 703. Both ends of the cutting blade 701 are fixedly connected to the connecting block 702 by bolts. A set of symmetrical cylinders 703 are fixedly connected to the support frame 6, and the telescopic ends of the cylinders 703 are fixedly connected to the top of the connecting block 702 respectively. The cutting blade 701 is located inside the support frame 6. Both ends of the support frame 6 are provided with sliding grooves 13, and the connecting blocks 702 respectively move through the sliding grooves 13.
[0026] When the strip-shaped foam sheet moves to the bottom of the support frame 6, the connecting block 702 is controlled by the cylinder 703 to move downward along the slide 13, so that the cutting blade 701 moves downward synchronously, thereby cutting the strip-shaped foam sheet at the same time, thus obtaining multiple foam materials of the same size at one time, so that the foam cutting process can be completed on the same production line, improving the output and speed of cutting the sheet.
[0027] Working principle: During use, the sheet material is transported by a feeding mechanism. The sheet material is controlled to pass sequentially through the cutting wheel 5 and the cutting blade 701. The cutting wheel 5 cuts the sheet material at equal intervals along its length, and then the cutting blade 701 cuts it along its width. Specifically, the servo motor 8 is started, driving the drive rod 404 to rotate inside the guide frame 3. Since the drive rod 404 is threadedly connected to the moving block 402, the guide frame 3 restricts the movement direction of the drive rod 404, thereby controlling the moving blocks 402 to move closer or further apart. When the moving blocks 402 move further apart, the two ends of the telescopic frame 403 are pulled away in opposite directions, causing the telescopic frame 403 to unfold along the length of the guide frame 3. Since the pivot position in the middle of the telescopic frame 403 is fixed... The telescopic frame 403 is fixed so that it expands to both ends around the pivot point in the middle position, causing the mounting frame 9 to move synchronously. Since the sleeve 10 is movably connected to the mounting frame 9, it pushes the cutting wheel 5 to move horizontally along the control bar 11, so that the cutting wheels 5 are evenly distributed. Then, the servo motor 12 is started to drive the control bar 11 to rotate, thereby driving all the cutting wheels 5 to rotate synchronously and cut simultaneously along the length of the sheet, dividing it into strips of equal width. Then, the strip-shaped foam sheet moves to the bottom of the support frame 6, and the connecting block 702 moves downward along the slide groove 13 through the cylinder 703, so that the cutting blade 701 moves downward synchronously, thereby cutting the strip-shaped foam sheet simultaneously, thus obtaining multiple foam materials of the same size at one time.
[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
Claims
1. An EVA foam sheet recycling cutting device, comprising a base (1), characterized in that: The top end of the base (1) is fixedly connected with a group of symmetrical support plates (2), and the top end of the support plate (2) is fixedly connected with a guide frame (3), the bottom end of the guide frame (3) is provided with an equidistant adjusting mechanism (4), and the bottom end of the equidistant adjusting mechanism (4) is fixedly connected with a plurality of cutting wheels (5) for adjusting the distance between the cutting wheels (5), the top end of the base (1) is fixedly connected with a support frame (6), and the inner side of the support frame (6) is movably connected with a cutting mechanism (7) for cutting the foam sheet.
2. The EVA foam sheet recycling cutting device according to claim 1, characterized in that: The equidistant adjusting mechanism (4) comprises a fixed block (401), a moving block (402), a telescopic frame (403) and a drive rod (404), the moving block (402) is symmetrically arranged, a group of symmetrical threads are formed on the outer side of the drive rod (404), the drive rod (404) penetrates the moving block (402), and the drive rod (404) is threadedly connected with the moving block (402), the moving block (402) is located on the opposite side of the fixed block (401), the drive rod (404) penetrates the fixed block (401), and the drive rod (404) is movably connected with the moving frame through a bearing, the bottom end of the fixed block (401) is fixedly connected with the middle position of the telescopic frame (403), and the bottom end of the moving block (402) is respectively fixedly connected with the end shaft top end of the telescopic frame (403).
3. The EVA foam sheet recycling cutting device according to claim 2, characterized in that: The fixed block (401) is fixedly connected to the inner side of the guide frame (3), and the moving block (402) is slidably connected to the inner side of the guide frame (3), the drive rod (404) is movably connected to the inner side of the guide frame (3) through a bearing, the outer side of the guide frame (3) is fixedly connected with a servo motor (8), and the output end of the servo motor (8) is fixedly connected with the end of the drive rod (404).
4. The EVA foam sheet recycling cutting device according to claim 2, characterized in that: The shaft bottom end of the telescopic frame (403) is fixedly connected with a mounting frame (9), the shaft center of the cutting wheel (5) is fixedly connected with a sleeve (10), and the cutting wheel (5) is movably connected to the bottom end of the opposite side of the mounting frame (9) through the sleeve (10).
5. The EVA foam sheet recycling cutting device according to claim 1, characterized in that: The opposite sides of the support plate (2) are movably connected with a control strip (11) through a bearing, the control strip (11) penetrates the sleeve (10), and the control strip (11) is movably connected with the sleeve (10), the outer side of the base (1) is fixedly connected with a servo motor (12), and the output end of the servo motor (12) is fixedly connected with the end of the control strip (11).
6. The EVA foam sheet recycling cutting device according to claim 1, characterized in that: The cutting mechanism (7) comprises a cutting knife (701), a connecting block (702) and a pneumatic cylinder (703), both ends of the cutting knife (701) are fixedly connected with the connecting block (702) through bolts, a group of symmetrical pneumatic cylinders (703) are fixedly connected on the support frame (6), and the telescopic ends of the pneumatic cylinders (703) are respectively fixedly connected with the top end of the connecting block (702).
7. The EVA foam sheet recycling cutting device according to claim 6, characterized in that: The cutting knife (701) is located on the inner side of the support frame (6), both ends of the support frame (6) are provided with a sliding groove (13), and the connecting block (702) is movably penetrated through the sliding groove (13).