Cutting device for fabric production

Abstract

The invention relates to a cutting device for fabric production. The device comprises a conveyor belt assembly; the three-connecting-rod mechanism is composed of a top plate, three servo electric cylinders and a ball cup, and a vertically-downward positioning rod is arranged at the bottom of the ball cup; the two-dimensional translation cutting mechanism is composed of a first sliding rail, a sliding frame, a second sliding rail, a sliding seat, a servo lifting table and a cutting knife, a sliding sleeve is vertically and fixedly arranged on the sliding seat, the positioning rod is inserted into the sliding sleeve in a sliding mode, and the cutting knife is vertically fixed to the servo lifting table. When the three servo electric cylinders in the three-connecting-rod mechanism move, the actual displacement length of the ball cup is obviously larger than the length change value of the three servo electric cylinders, the maximum moving speed of the cutting knife can be obviously increased through the structure, and therefore the cutting production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a cutting device, in particular to a cutting device for fabric production. Background Art

[0002] In the field of fabric cutting, the vibrating blade cutter is a relatively new type of fabric cutting equipment. Its core structure includes a high-frequency vibrating cutter head with a blade that vibrates tens of thousands of times per minute, supports vertical cutting and 360-degree rotation, a vacuum transfer platform, a three-axis servo mechanism, and a control system. Vibrating blade cutters offer high-precision cutting, smooth, burr-free cuts, are suitable for custom-shaped patterns, are heat-resistant, offer high automation efficiency, and are environmentally friendly and safe.

[0003] However, the three-axis servo mechanism on existing vibrating knife cutting machines has a problem with its upper speed limit being too slow when moving long distances without a load. This is because the existing three-axis servo mechanism is composed of servo slides distributed along the X, Y, and Z axes. The screws within the servo slides generate a large thermal effect when rotating, so both the operating time and speed will cause heat generation. Excessive rotation speed can also significantly reduce the lifespan of the servo. However, the position of the cutting blade must be repositioned before each cut, which requires long, unloaded movements. The slower the three-axis servo mechanism moves, the longer this process takes, which in turn affects overall production efficiency. Summary of the Invention

[0004] The invention provides a cutting device for fabric production, which solves the problem in the prior art that the moving speed of a three-axis servo mechanism is slow and affects the cutting efficiency.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: A cutting device for fabric production, comprising: a conveyor belt assembly, in particular a conveyor belt assembly with a negative pressure adsorption system;

[0006] The three-link mechanism is composed of a top plate relatively fixed above the conveyor belt assembly, three servo electric cylinders hinged to the bottom of the top plate, and a ball head seat. The connection parts of the three servo electric cylinders and the top plate are distributed in an equilateral triangle. The telescopic rods of the three servo electric cylinders are concentrically hinged to the ball head seat. The bottom of the ball head seat is provided with a vertical downward positioning rod;

[0007] The two-dimensional translation cutting mechanism is composed of a first slide rail, a sliding frame, a second slide rail arranged on the sliding frame, a sliding seat, a servo lifting platform vertically arranged on the sliding seat, and a cutting knife. The first slide rail is distributed along the conveying direction of the conveyor belt assembly, the sliding frame is slidably assembled on the first slide rail, the sliding seat is slidably assembled on the second slide rail, the second slide rail is perpendicular to the first slide rail and is horizontally distributed, a sliding sleeve is vertically fixed on the sliding seat, the positioning rod is slidably inserted in the sliding sleeve, and the cutting knife is vertically fixed on the servo lifting platform. The cutting knife can be a vibrating knife cutting module or a circular knife cutting module.

[0008] The three-link mechanism in the present invention is used to drive the sliding seat on the two-dimensional translation cutting mechanism to achieve two-dimensional translation above the conveyor belt assembly. Specifically, the three servo electric cylinders in the three-link mechanism are individually controlled by the control center to extend and retract. By changing the length of the three servo electric cylinders, the ball head seat can be efficiently controlled to move in space. At the same time, the positioning rod at the bottom of the ball head seat is in sliding cooperation with the sliding sleeve on the sliding seat, and the sliding seat is constrained by the first slide rail and the second slide rail. Therefore, the spatial movement of the positioning rod will synchronously drive the sliding seat to translate on the horizontal two-dimensional plane. When the three servo electric cylinders in the three-link mechanism are displaced, the actual displacement length of the ball head seat is significantly greater than the length change value of the three servo electric cylinders. Therefore, if the cutting knife in the present invention wants to achieve the same movement speed as the existing cutting knife, the extension and retraction speed requirements of the three servo electric cylinders are significantly reduced. Therefore, when using a servo mechanism with a similar maximum speed, the structure of the present invention can significantly improve the maximum movement speed of the cutting knife, thereby improving the production efficiency of cutting.

[0009] The positioning rod and the sleeve on the sliding seat are designed to slide together to simplify the control of the three servo cylinders, allowing the ball head seat to rise and fall within a certain range. This structure also prevents the cutting reaction of the cutting blade from being transmitted to the ball head seat and servo cylinder, which helps to extend the service life of the servo cylinder.

[0010] Furthermore, the ball head seat is composed of an outer shell, an inner core, and three movable plates. The upper half of the outer shell is provided with three windows arranged in a circular array. The inner core is concentrically disposed within the outer shell, forming a movable cavity therebetween. The movable plates are slidably assembled within the movable cavity. Connecting rods radiating outward are fixed to the movable plates. The connecting rods are coaxially fixedly connected to the telescopic rods of the servo cylinders and extend through the windows. The aperture of the windows is larger than the outer diameter of the connecting rods and allows the connecting rods to twist within a certain range, generally no less than 20 degrees.

[0011] Therefore, compared with the prior art, the present invention has the following characteristics: 1. When the three servo electric cylinders in the three-link mechanism are displaced, the actual displacement length of the ball head seat is significantly greater than the length change value of the three servo electric cylinders. The structure of the present invention can significantly improve the maximum moving speed of the cutting knife, thereby improving the cutting production efficiency; 2. The positioning rod and the sliding sleeve on the sliding seat adopt a sliding fit, which avoids the cutting knife transmitting the reaction of cutting to the ball head seat and the servo electric cylinder during cutting, which is beneficial to extending the service life of the servo electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attachment Figure 1 It is a structural schematic diagram of the present invention;

[0013] Attachment Figure 2 It is a simplified diagram of the action of the three-bar linkage;

[0014] Attachment Figure 3 is a top view of the present invention;

[0015] Attachment Figure 4 It is a partial structural diagram of the three-bar linkage;

[0016] Attachment Figure 5 It is a structural diagram of the ball head seat. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] Example 1: See Figure 1 and Figure 3 , a cutting device for fabric production, comprising: a conveyor belt assembly 100 with a negative pressure adsorption system;

[0020] The three-bar linkage 200 consists of a top plate 210 fixed relatively above the conveyor assembly, three servo electric cylinders 220 hinged to the bottom of the top plate, and a ball head seat 230. The connection points between the three servo electric cylinders and the top plate are arranged in an equilateral triangle. The telescopic rods of the three servo electric cylinders are concentrically hinged to the ball head seat, and the bottom of the ball head seat is provided with a vertical downward positioning rod 240;

[0021] The two-dimensional translation cutting mechanism 300 is composed of two first slide rails 310 arranged parallel to both sides of the conveyor belt assembly, a sliding frame 320, a second slide rail 330 arranged on the sliding frame, a sliding seat 340, a servo lifting platform 350 vertically arranged on the sliding seat, and a cutting knife 360. The first slide rail is distributed along the conveying direction of the conveyor belt assembly, the sliding frame is slidably assembled on the first slide rail, the sliding seat is slidably assembled on the second slide rail, the second slide rail is perpendicular to the first slide rail and is horizontally distributed, a sliding sleeve 370 is vertically fixed on the sliding seat, the positioning rod is slidably inserted in the sliding sleeve, the cutting knife is vertically fixed on the servo lifting platform, and the cutting knife is a vibrating knife cutting module.

[0022] The three-link mechanism in this embodiment is used to drive the sliding seat on the two-dimensional translation cutting mechanism to achieve two-dimensional translation above the conveyor belt assembly. Specifically, the three servo electric cylinders in the three-link mechanism are individually controlled to extend and retract by the control center. By changing the length of the three servo electric cylinders, the ball head seat can be efficiently controlled to move in space. At the same time, the positioning rod at the bottom of the ball head seat is in sliding cooperation with the sliding sleeve on the sliding seat, and the sliding seat is constrained by the first slide rail and the second slide rail. Therefore, the spatial movement of the positioning rod will synchronously drive the sliding seat to translate on the horizontal two-dimensional plane. When the three servo electric cylinders in the three-link mechanism are displaced, the actual displacement length of the ball head seat is significantly greater than the length change value of the three servo electric cylinders (refer to the attached Figure 2 ), so the cutting knife in this embodiment wants to achieve the same moving speed as the existing cutting knife, and the extension and retraction speed requirements of the three servo electric cylinders are significantly reduced. Therefore, when using a servo mechanism with a similar maximum speed, the structure of this embodiment can significantly improve the maximum moving speed of the cutting knife, thereby improving the cutting production efficiency.

[0023] The positioning rod and the sleeve on the sliding seat are designed to slide together to simplify the control of the three servo cylinders, allowing the ball head seat to rise and fall within a certain range. This structure also prevents the cutting reaction of the cutting blade from being transmitted to the ball head seat and servo cylinder, which helps to extend the service life of the servo cylinder.

[0024] For details, see Figure 4 and Figure 5 The ball seat consists of an outer shell 231, an inner core 232, and three movable pieces 233. Three windows 234 are arranged in a circular array on the upper half of the outer shell. The inner core is concentrically positioned within the outer shell, forming a movable cavity 235 between the two. The movable pieces slide within the cavity. Connecting rods 236, radiating outward, are fixed to the movable pieces. The connecting rods are coaxially connected to the telescopic rod of the servo cylinder and extend through the windows. The windows are larger than the outer diameter of the connecting rod and allow the connecting rod to twist within a certain range, generally no less than 20°.

[0025] For details, see Figure 5 The bottom of the outer spherical shell is provided with a threaded sleeve 237, the upper part of the positioning rod is screwed to the threaded sleeve, and a positioning pin 238 is inserted between the two. The inner ball core is fixed to the top of the positioning rod; the connecting rod and the telescopic rod of the servo electric cylinder are screwed and fixed. When installing the ball head seat, first place the three movable pieces into the outer spherical shell, and keep the three connecting rods extending from the three windows. Then place the inner ball core into the outer spherical shell, gradually tighten the positioning rod and the threaded sleeve, and at the same time move the connecting rod to prevent the movable piece from being over-clamped. When the positioning rod and the threaded sleeve are rotated to the appropriate position, use a drilling machine to drill a hole in the threaded sleeve, and then wedge in the positioning pin to prevent the positioning rod and the threaded sleeve from rotating relative to each other.

[0026] For details, see Figure 1 The sliding seat is also provided with a laser positioning transmitter 380 arranged toward the conveyor belt assembly to facilitate fabric positioning.

[0027] The present invention can be modified in various ways that are obvious to those skilled in the art, and such modifications are not considered to depart from the scope of the present invention. All such modifications obvious to those skilled in the art are intended to be included within the scope of the present claims.

Claims

1. A cutting device for fabric production, characterized in that: include: conveyor belt components; The three-link mechanism is composed of a top plate relatively fixed above the conveyor belt assembly, three servo electric cylinders hinged to the bottom of the top plate, and a ball head seat. The connection parts of the three servo electric cylinders and the top plate are distributed in an equilateral triangle. The telescopic rods of the three servo electric cylinders are concentrically hinged to the ball head seat. The bottom of the ball head seat is provided with a vertical downward positioning rod; The two-dimensional translation cutting mechanism consists of a first slide rail, a sliding frame, a second slide rail arranged on the sliding frame, a sliding seat, a servo lifting platform vertically arranged on the sliding seat, and a cutting knife. The first slide rail is distributed along the conveying direction of the conveyor belt assembly, the sliding frame is slidably assembled on the first slide rail, the sliding seat is slidably assembled on the second slide rail, the second slide rail is perpendicular to the first slide rail and is horizontally distributed, a sliding sleeve is vertically fixed on the sliding seat, the positioning rod is slidably inserted in the sliding sleeve, and the cutting knife is vertically fixed on the servo lifting platform.

2. The fabric production cutting device according to claim 1, characterized in that: The ball head seat is composed of an outer spherical shell, an inner spherical core and three movable plates. The upper half of the outer spherical shell is provided with three windows in a circular array. The inner spherical core is arranged inside the outer spherical shell and is concentrically arranged. A movable cavity is formed between the two. The movable plate is slidably assembled in the movable cavity. A connecting rod radiating outward is fixed on the movable plate. The connecting rod is coaxially fixedly connected to the telescopic rod of the servo electric cylinder and passes through the window.

3. The fabric production cutting device according to claim 2, characterized in that: A threaded sleeve is provided at the bottom of the outer spherical shell, the upper part of the positioning rod is screwed to the threaded sleeve, and a positioning pin is inserted between the two, and the inner spherical core is fixed to the top of the positioning rod.

4. The fabric production cutting device according to claim 1, characterized in that: The cutting knife is a vibrating knife cutting module or a circular knife cutting module.

5. The fabric production cutting device according to claim 1, characterized in that: The sliding seat is also provided with a laser positioning transmitter arranged toward the conveyor belt assembly.

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