A foam cutting machine

Abstract

The utility model belongs to cutting machine field, specifically is a kind of foam cutting machine, including a pair of stand, slide rail, portal frame, a pair of stand between fixed installation has multiple electric heating wire, and electric heating wire is used to carry out heat cutting to foam;Trolley is slidably connected on the slide rail, and foam is located above trolley;The side of slide rail is equipped with power component, for driving trolley to slide along slide rail;The top of portal frame is fixedly connected with first motor;The output of first motor is fixedly connected with round plate, and round plate is located in the inner surface of portal frame;The surface of round plate is symmetrically rotatably connected with a pair of crank;The end of crank is rotatably connected with vertical plate;Multiple telescopic links are fixedly connected between vertical plate and portal frame inner wall;By the cooperation of round plate and crank, after first motor starts, a pair of vertical plate can move towards each other and extrude both sides of foam, to improve the accuracy of position when cutting foam, positioning before cutting foam is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of cutting machines, specifically a foam cutting machine. Background Technology

[0002] Foam is a lightweight, porous material composed of numerous gas bubbles dispersed within a solid plastic. Its core characteristics are excellent cushioning, rebound, and energy return properties. In shoe manufacturing, foam is primarily used in the midsole through processes such as in-mold foaming or supercritical fluid foaming. It forms the "soul" of modern athletic shoes, responsible for absorbing the impact of foot strike and providing a lightweight and soft feel. Foam is also commonly used in insoles and tongues to enhance immediate comfort and fit, making it a key material for achieving lightweight, comfortable, and functional shoes.

[0003] Foam cutting is the process of separating foam materials into designed shapes using physical or thermal means. Among these methods, electric wire cutting has become the mainstream approach due to its high precision and flexibility. Electric wire cutting utilizes resistance wires, such as those made of nickel-chromium alloy, heated to 200-400℃, causing localized melting of the foam and separation along the heating wire's path. This method offers advantages such as clean cuts, no debris, and the ability to cut complex curved surfaces. This technology is suitable for thermoplastic foams such as EPS and EPU, but the heating temperature and cutting speed must be controlled to avoid material carbonization or deformation.

[0004] In existing technologies, before cutting with an electric heating wire, it is necessary to ensure that the long side of the foam is parallel to the heating wire in order to ensure that the cutting line is perpendicular to the material surface and reduce misalignment error. However, traditional methods rely on manual visual adjustment, which is inefficient. Especially for large-sized foams, manual adjustment is time-consuming and has poor repeatability and positioning accuracy.

[0005] Therefore, a foam cutting machine is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A foam cutting machine of this utility model includes a pair of columns, a slide rail, and a gantry frame. Multiple heating wires are fixedly installed between the pair of columns for thermal cutting of foam. A trolley is slidably connected to the slide rail, and the foam is located above the trolley. A power component is provided on one side of the slide rail for driving the trolley to slide along the slide rail. A first motor is fixedly connected to the top of the gantry frame. A circular plate is fixedly connected to the output end of the first motor, and the circular plate is located on the inner surface of the gantry frame. A pair of cranks are symmetrically rotatably connected to the surface of the circular plate. A vertical plate is rotatably connected to the end of the crank. Multiple telescopic rods are fixedly connected between the vertical plate and the inner wall of the gantry frame. Through the cooperation of the circular plate and the cranks, after the first motor is started, the pair of vertical plates can move towards each other and squeeze the two sides of the foam to improve the accuracy of the position during foam cutting and facilitate the positioning of the foam before cutting.

[0008] Preferably, the upright plate is rotatably mounted with multiple guide wheels on the side facing the foam; the surface of the guide wheels is provided with a rubber layer; by setting the guide wheels, the compression and resistance between the upright plate and the foam can be reduced, making it easier for the upright plate to position the foam.

[0009] Preferably, a suction cup is fixedly installed on the side of the trolley facing the foam; the suction cup has an opening on the side facing the foam; a distributor is fixedly installed on the other side of the trolley; the distributor and the suction cup are connected; an air extraction pipe is connected to the outer wall of the distributor; and a negative pressure supply device is connected to the end of the air extraction pipe. After the foam is positioned by the upright plate, the foam can be pressed against the suction cup, and the negative pressure supply device, specifically a vacuum pump, can be activated to create a negative pressure state in the distributor and the suction cup, thereby adsorbing and fixing the foam. This reduces the shaking of the foam when the trolley moves, and also improves the stability of the upper foam after it is cut, reducing misalignment between the upper and lower foam layers after cutting, which facilitates subsequent transportation or other processing operations of the foam.

[0010] Preferably, multiple suction cups are arranged, and the multiple suction cups are arranged vertically at equal intervals. In actual production, the spacing between the suction cups can be adjusted adaptively, that is, to ensure that the adjustment range of each heating wire should be located in the gap between adjacent suction cups. This arrangement can minimize the direct contact between the heating wire and the suction cup when the trolley moves.

[0011] Preferably, the power assembly includes a second motor fixedly mounted on one side of the slide rail; the output end of the second motor is fixedly connected to a screw; the screw and the trolley are threadedly connected, and the screw and the inner wall of the slide rail are rotatably connected; through the threaded transmission between the screw and the trolley, the trolley can be controlled with high precision to ensure that the trolley can brake in time after the foam on the trolley is cut by the heating wire, thereby reducing the direct contact between the heating wire and the trolley.

[0012] Preferably, the screw has an outer shell on its outer wall; the bottom of the outer shell has an opening, and the outer shell and the trolley are connected through each other; by providing the outer shell, the outer shell can protect the screw from dust, thereby reducing the contamination of the screw by impurities in the working environment.

[0013] The advantages of this utility model are: 1. The foam cutting machine of this utility model, through the cooperation of the circular plate and the crank, after the first motor is started, can make a pair of vertical plates move towards each other and squeeze the two sides of the foam, so as to improve the accuracy of the position during foam cutting and facilitate the positioning of the foam before cutting.

[0014] 2. The foam cutting machine of this utility model, by setting guide wheels, can reduce the compression and resistance between the upright plate and the foam, and facilitate the positioning of the foam by the upright plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main body of this utility model; Figure 2 This is a schematic diagram of the slide rail structure in this utility model; Figure 3 This is a schematic diagram of the gantry frame structure in this utility model; Figure 4 This is a schematic diagram of the structure of the neutral plate of this utility model; Figure 5 This is a schematic diagram of the structure of the platform vehicle of this utility model.

[0017] In the diagram: 1. Column; 12. Slide rail; 13. Heating wire; 14. Trolley; 15. Gantry frame; 16. First motor; 17. Circular plate; 18. Crank; 19. Vertical plate; 110. Telescopic rod; 2. Guide wheel; 3. Suction cup; 32. Distributor; 33. Air extraction pipe; 5. Second motor; 52. Screw; 6. Housing. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] Specific implementation examples are given below.

[0020] Please see Figures 1 to 5 As shown in the figure, a foam cutting machine according to an embodiment of the present invention includes a pair of columns 1, a slide rail 12, and a gantry frame 15. Multiple heating wires 13 are fixedly installed between the pair of columns 1 for thermal cutting of the foam. A trolley 14 is slidably connected to the slide rail 12, and the foam is located above the trolley 14. A power assembly is provided on one side of the slide rail 12 to drive the trolley 14 to slide along the slide rail 12. A first motor 16 is fixedly connected to the top of the gantry frame 15. A circular plate 17 is fixedly connected to the output end of the first motor 16, and the circular plate 17 is located on the inner surface of the gantry frame 15. A pair of cranks 18 are symmetrically rotatably connected to the surface of the circular plate 17. A vertical plate 19 is rotatably connected to the end of the cranks 18. Multiple telescopic rods 110 are fixedly connected between the vertical plate 19 and the inner wall of the gantry frame 15. During operation, foam can be manually or by a robotic arm loaded onto the trolley 14. After placement, the circular plate 17 can be rotated by starting the first motor 16. When the circular plate 17 rotates, it can symmetrically connect a pair of cranks 18 to the inner surface of the gantry frame 15. When crank 18 is pulled, it can deflect at an angle as the circular plate 17 rotates. When crank 18 deflects, it applies a lateral force to the upright plate 19. The telescopic rod 110 provides guidance and limitation for the upright plate 19, allowing the pair of upright plates 19 to move towards each other with crank 18 until the upright plates 19 abut against the outer side of the foam. During the contact process between the upright plates 19 and the foam, the foam's posture can be adjusted, driving the foam to be parallel to the heating wire 13. Furthermore, to ensure stable positioning of the foam by the upright plates 19... Okay, the first motor 16 is preferably a geared motor, which can then be reversed to drive the upright plate 19 away from the foam, and drive the trolley 14 to slide along the slide rail 12 through the power component, so that the foam can come into contact with the heating wire 13 that heats up after being energized and be cut into segments by it; through the cooperation of the circular plate 17 and the crank 18, after the first motor 16 is started, it can make a pair of upright plates 19 move towards each other and squeeze the sides of the foam to improve the accuracy of the position when cutting the foam and facilitate the positioning of the foam before cutting.

[0021] Please see Figure 4As shown, the upright plate 19 is rotatably mounted with multiple guide wheels 2 on the side facing the foam; the surface of the guide wheels 2 is provided with a rubber layer; by setting the guide wheels 2, on the one hand, the rubber layer on the surface of the guide wheels 2 can reduce the pressure on the foam surface when the upright plate 19 and the foam come into contact, and reduce the indentations left on the foam surface due to compression; on the other hand, the guide wheels 2 can form rolling friction with the foam, so as to simplify the operation of reversing the first motor 16 before cutting the foam and optimize the operation steps during foam cutting; by setting the guide wheels 2, the guide wheels 2 can reduce the compression and resistance between the upright plate 19 and the foam, and facilitate the positioning of the foam by the upright plate 19.

[0022] Please see Figure 1 and Figure 5 As shown, a suction cup 3 is fixedly installed on the side of the trolley 14 facing the foam; the suction cup 3 has an opening on the side facing the foam; a distributor 32 is fixedly installed on the other side of the trolley 14; the distributor 32 and the suction cup 3 are connected; an air extraction pipe 33 is connected to the outer wall of the distributor 32; a negative pressure supply device is connected to the end of the air extraction pipe 33; after the foam is positioned by the upright plate 19, the foam can be pressed against the suction cup 3 and the negative pressure supply device, specifically a vacuum pump, can be activated to make the distributor 32 and the suction cup 3 under negative pressure to adsorb and fix the foam. On the one hand, this can reduce the shaking of the foam when the trolley 14 moves, and on the other hand, it can improve the stability of the upper foam after it is cut, reduce the misalignment between the upper and lower foam after cutting, and facilitate the subsequent transportation or other processing operations of the foam.

[0023] Please see Figure 5 As shown, there are multiple suction cups 3, and the multiple suction cups 3 are vertically equidistant. In actual production, the spacing between the suction cups 3 can be adjusted adaptively, that is, to ensure that the adjustment range of each heating wire 13 should be located in the gap between adjacent suction cups 3. This setting can minimize the direct contact between the heating wire 13 and the suction cup 3 when the trolley 14 moves.

[0024] Please see Figure 1 and Figure 5 As shown, the power assembly includes a second motor 5 fixedly mounted on one side of the slide rail 12; a screw 52 is fixedly connected to the output end of the second motor 5; the screw 52 and the trolley 14 are threadedly connected, and the screw 52 and the inner wall of the slide rail 12 are rotatably connected; through the threaded transmission between the screw 52 and the trolley 14, the trolley 14 can be precisely controlled to ensure that after the foam on the trolley 14 is cut by the heating wire 13, the trolley 14 can brake in time, reducing the direct contact between the heating wire 13 and the trolley 14.

[0025] Please see Figure 3As shown, the outer wall of the screw 52 is provided with a shell 6; the bottom of the shell 6 is provided with an opening, and the shell 6 and the trolley 14 are connected through each other; by providing the shell 6, the shell 6 can protect the screw 52 from dust, so as to reduce the contamination of the screw 52 by impurities in the working environment.

[0026] Working principle: Foam is manually or by a robotic arm loaded onto the trolley 14. After placement, the first motor 16 is started to drive the circular plate 17 to rotate. When the circular plate 17 rotates, it pulls on a pair of cranks 18 on its surface. The cranks 18 deflect at an angle as the circular plate 17 rotates, applying a lateral force to the upright plate 19. The telescopic rod 110 provides guidance and limitation for the upright plate 19, allowing the pair of upright plates 19 to move towards each other with the cranks 18 until the upright plates 19 abut against the outer side of the foam. During the contact between the upright plates 19 and the foam, the foam's posture can be adjusted, driving the foam to contact the heating wire 1. 3. To ensure stable positioning of the foam by the upright plate 19, the first motor 16 is preferably a geared motor. The first motor 16 can then be reversed to drive the upright plate 19 away from the foam, and the power assembly drives the trolley 14 to slide along the slide rail 12, allowing the foam to contact the heated wire 13 and be cut into segments. The guide rollers 2 serve two purposes: firstly, the rubber layer on their surface reduces the pressure on the foam surface when the upright plate 19 contacts the foam, minimizing indentations; secondly, the guide rollers 2 create rolling friction with the foam, simplifying the foam cutting process. First, the operation of reversing the first motor 16 is optimized to improve the foam cutting process. After positioning the foam using the upright plate 19, the foam can be pressed against the suction cup 3, and a negative pressure supply device, specifically a vacuum pump, can be activated to create a negative pressure state in the distributor 32 and suction cup 3 to adsorb and fix the foam. This reduces the shaking of the foam as it moves with the trolley 14 and improves the stability of the upper foam after cutting, reducing misalignment between the upper and lower foam layers and facilitating subsequent foam transportation or other processing operations. In actual production, the spacing between the suction cups 3 can be adjusted. Adaptive adjustment ensures that the adjustment range of each heating wire 13 is within the gap between adjacent suction cups 3. This arrangement minimizes direct contact between the heating wire 13 and suction cups 3 during the movement of the trolley 14. High-precision stroke control of the trolley 14 is achieved through the threaded transmission between the screw 52 and the trolley 14, ensuring timely braking of the trolley 14 after the foam on it is cut by the heating wire 13, thus reducing direct contact between the heating wire 13 and the trolley 14. The outer casing 6 provides dust protection for the screw 52, ​​reducing contamination from impurities in the working environment.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A foam cutting machine, comprising a pair of columns (1), a slide rail (12), and a gantry frame (15), wherein a plurality of heating wires (13) are fixedly installed between the pair of columns (1), the heating wires (13) being used for thermal cutting of foam; characterized in that: A trolley (14) is slidably connected to the slide rail (12), and the foam is located above the trolley (14); a power component is provided on one side of the slide rail (12) to drive the trolley (14) to slide along the slide rail (12); a first motor (16) is fixedly connected to the top of the gantry frame (15); a circular plate (17) is fixedly connected to the output end of the first motor (16), and the circular plate (17) is located on the inner surface of the gantry frame (15); a pair of cranks (18) are symmetrically rotatably connected to the surface of the circular plate (17); a vertical plate (19) is rotatably connected to the end of the cranks (18); a plurality of telescopic rods (110) are fixedly connected between the vertical plate (19) and the inner wall of the gantry frame (15).

2. A foam cutting machine according to claim 1, characterized in that: The upright plate (19) is rotatably mounted with multiple guide wheels (2) facing the foam side; the surface of the guide wheels (2) is provided with a rubber layer.

3. A foam cutting machine according to claim 2, characterized in that: The trolley (14) is fixedly provided with a suction cup (3) on the side facing the foam; the suction cup (3) is provided with an opening on the side facing the foam; a distributor (32) is fixedly provided on the other side of the trolley (14); the distributor (32) and the suction cup (3) are connected; an air extraction pipe (33) is connected to the outer wall of the distributor (32); a negative pressure supply device is connected to the end of the air extraction pipe (33).

4. A foam cutting machine according to claim 3, characterized in that: The suction cups (3) are arranged in multiple ways, and the multiple suction cups (3) are arranged vertically at equal intervals.

5. A foam cutting machine according to claim 4, characterized in that: The power assembly includes a second motor (5) fixedly mounted on one side of the slide rail (12); the output end of the second motor (5) is fixedly connected to a screw (52); the screw (52) and the trolley (14) are threadedly connected, and the screw (52) and the inner wall of the slide rail (12) are rotatably connected.

6. A foam cutting machine according to claim 5, characterized in that: The screw (52) has an outer shell (6) on its outer wall; the bottom of the outer shell (6) has an opening, and the outer shell (6) and the trolley (14) are connected through each other.

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