Crawler for cutting table

Abstract

The present application belongs to the technical field of cutting bed equipment, and particularly relates to a track type worktable for cutting bed. The present application provides a track type worktable for cutting bed, which comprises brush blocks for splicing to form a track, connecting pieces between the brush blocks, and stripping pieces on the connecting pieces. The worktable utilizes the deformation of the track when the track passes around the end driving sprocket, cuts the silk thread wound on the connecting pin piece, and cleans the dust and sundries in the brush gap, so as to effectively avoid the equipment failure caused by the accumulation of cuttings and the winding of thread segments, and reduce the frequency of shutdown maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of cutting equipment, and particularly relates to a tracked worktable for cutting. Background Technology

[0002] In the mass production processing of industrial-grade materials such as aramid and carbon fiber, multi-layer stacking and cutting are often required. These materials share the characteristics of high strength and great thickness, which conventional circular cutters cannot penetrate, while dragging the blade causes too much resistance. Therefore, vertical sawing is necessary. This cutting method requires a penetration margin of several millimeters, meaning the blade needs to penetrate a certain depth into the support table. At the same time, to achieve continuous cutting and feeding, the worktable must be able to continuously transport material forward, hence the use of tracked worktables.

[0003] However, this type of brush block tracked worktable has a serious problem: during cutting, the chips can easily seep into the gaps between adjacent brush blocks, especially since the fibers can get tangled on the rotating connecting parts. The current conventional solution is to clean it manually after stopping the machine, but industrial cutting beds usually run continuously, and frequent shutdowns for cleaning seriously affect production efficiency.

[0004] For example, Chinese invention patent CN118895661A discloses a garment fabric processing and cutting device and its cutting method, including a support leg, a support rod installed on the inner side of the support leg, a worktable installed on the top of the support leg, and a mounting plate installed on one side of the top of the worktable. A first transmission wheel is installed on one side of a servo motor. When the servo motor works, it drives the first transmission wheel to rotate. The rotation of the first transmission wheel drives the second transmission wheel to rotate through a transmission belt. The rotation of the second transmission wheel drives the first brush at one end to rotate. At the same time, when the second transmission wheel rotates, it drives the first gear at the other end to rotate. The first gear drives the second gear to rotate.

[0005] The processing and cutting device in this invention patent has the following general structural principle: after the fabric is cut, the first brush and the second brush rotate to clean the surface of the fabric, removing dust and loose threads, making the fabric cleaner when rolled up. This achieves the purpose of the garment fabric processing and cutting device to facilitate the cleaning of the cut fabric.

[0006] However, these existing technologies still have the following shortcomings in actual use, which are the technical problems that this invention aims to solve: 1. Manual cleaning or the use of additional cleaning brushes requires extra costs and energy; 2. They can only clean surface debris and are difficult to clean tangled threads, while the tangled material increases rotational resistance and affects the operation of the equipment.

[0007] In conclusion, it is necessary to develop a tracked workbench capable of cleaning debris from crevices to solve this problem. Summary of the Invention

[0008] This invention provides a tracked workbench for a cutting bed, including brush blocks for splicing to form a track, connecting parts between the brush blocks, and peeling parts on the connecting parts. The workbench uses the bending deformation generated when the track passes around the end drive sprocket to cut the threads wrapped around the connecting pin and clean the dust and debris in the gaps of the brush bristles, thereby effectively avoiding equipment failures caused by chip accumulation and thread entanglement, and reducing the frequency of downtime maintenance.

[0009] This invention overcomes the shortcomings of the prior art and provides a tracked worktable for a cutting machine, including a drive wheel assembly mounted on the cutting machine frame, brush blocks, a plurality of brush blocks hinged together at their bottoms and arranged around the drive wheel assembly to form a track, each brush block including a base and bristles disposed on the base; and a connecting member including a front connecting plate disposed on the front end side wall of the base in the conveying direction, a rear connecting plate disposed on the rear end side wall of the base in the conveying direction, a circular hole disposed on the front connecting plate, and an elongated hole disposed on the rear connecting plate, wherein the front connecting plates and rear connecting plates of two adjacent brush blocks are connected by a connecting element. The pin connection passes through the round hole and the elongated hole in succession and is interference-fitted with the round hole. The upper ends of two adjacent brush blocks can move closer or further apart when entering the turning lane of the drive wheel set. The peeling member includes two bearing arms disposed on the rear side wall of the base in the conveying direction and parallel to the conveying direction, a blade disposed at both ends at the bottom of the bearing arms and parallel to the pin, a clearance groove disposed on the blade for avoiding the front connecting plate and the rear connecting plate, and a receiving cavity disposed on the front side wall of the base in the conveying direction for accommodating the rear connecting plate and the blade.

[0010] A further preferred technical solution is that the maximum angle between two adjacent brush blocks at the turning point of the drive wheel set is θ, the number of teeth of the drive wheel set is N, and θ = 360° / N is satisfied.

[0011] A further preferred technical solution is that the blade is arranged parallel to the cutting table surface.

[0012] A further preferred technical solution is that the cutting edge of the blade is a slightly concave arc shape.

[0013] A further preferred technical solution is that the blade is provided with a groove that matches the radius of curvature of the outer cylindrical surface of the pin.

[0014] A further preferred technical solution is that the cutting edge of the blade is a straight surface on the side near the pin, and an inclined surface on the side away from the pin.

[0015] A further preferred technical solution is that the bearing arm is made of spring steel, and its bending section modulus in the vertical plane is greater than its bending section modulus in the horizontal plane.

[0016] A further preferred technical solution is that a positioning screw is provided between the support arm and the blade.

[0017] A further preferred technical solution is that the bottom surface of the receiving cavity is inclined to the outside.

[0018] A further preferred technical solution is that the inner wall of the elongated hole is provided with a smooth and wear-resistant layer.

[0019] The beneficial effects of this invention are at least as follows: 1. By setting a peeling element between adjacent brush blocks and using the surface change of the track when bending to cut off the thread ends wrapped around the pin, the waste material actively falls off when bending. The whole process is completed during normal track operation without the need for manual intervention, which significantly improves production efficiency; 2. It avoids equipment failures caused by the accumulation of debris and the entanglement of thread ends; 3. It effectively cleans debris and thread segments that settle in the gaps between brush blocks and are wrapped around the bottom connector, and cleans more thoroughly than an external structure that works from the outside in. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a front view of the invention in a flat state (blade not shown). Figure 3 This is a front view of the present invention in a bending state (blade not shown). Figure 4 This is a front view of the invention in a flat state; Figure 5 This is a front view of the invention in a bending state; Figure 6 This is a frontal view of the invention in a cornering state. Figure 2 ; Figure 7 This is a top view of the present invention; Figure 8 This is a top view of the blade of the present invention.

[0022] The meanings of the various reference numerals in the figure are as follows: Brush block 1, base 11, bristles 12; Connector 2, front connecting plate 21, rear connecting plate 22, round hole 23, oblong hole 24, pin 25; Peeling component 3, bearing arm 31, blade 32, clearance groove 33, receiving cavity 34, cutting groove 35. Detailed Implementation

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc., mentioned or possibly mentioned in this specification are defined relative to the structure shown in the accompanying drawings. The terms "inner" and "outer" refer to the direction toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0025] Example 1 As attached Figures 1-8 As shown, a tracked worktable for a cutting machine includes a drive wheel assembly mounted on the cutting machine frame, brush blocks 1, multiple brush blocks 1 hinged together at their bottoms and arranged around the drive wheel assembly to form a track, each brush block 1 including a base 11 and brush bristles 12 mounted on the base 11; and a connecting member 2 including a front connecting plate 21 mounted on the front end sidewall of the base 11 in the conveying direction, a rear connecting plate 22 mounted on the rear end sidewall of the base 11 in the conveying direction, a circular hole 23 on the front connecting plate 21, and an elongated hole 24 on the rear connecting plate 22. The front connecting plates 21 and rear connecting plates 22 of two adjacent brush blocks 1 are connected by a pin 25, the pin 25 passing successively through the circular hole 23 and the elongated hole 24, and connecting with the circular hole... 23. An interference fit is provided, allowing the upper ends of two adjacent brush blocks 1 to move closer or further apart when entering the turning lane of the drive wheel assembly; the peeling member 3 includes two support arms 31 disposed on the rear end side wall of the base 11 in the conveying direction and parallel to the conveying direction, a blade 32 with both ends disposed at the bottom end of the support arms 31 and parallel to the pin 25, a clearance groove 33 disposed on the blade 32 for avoiding the front connecting plate 21 and the rear connecting plate 22, and a receiving cavity 34 disposed on the front end side wall of the base 11 in the conveying direction for accommodating the rear connecting plate 22 and the blade 32; the blade 32 is disposed parallel to the cutting table surface; the inner wall of the elongated hole 24 is provided with a smooth wear-resistant layer; a positioning screw is disposed between the support arms 31 and the blade 32.

[0026] A set of drive wheels is installed at each end of the cutting machine frame, employing a sprocket structure driven by a drive motor. The center distance of the drive wheels is determined according to the length of the cutting table surface, and they are mounted on the frame via bearing seats. One drive wheel set is driven by a servo motor through a reducer, which matches the speed of the drive wheel set to the running speed of the track. The other is a driven wheel set. Multiple brush blocks are hinged together at their bottoms and arranged around the drive wheels to form a track. Each brush block consists of a base and bristles. The base has a rectangular cross-section, and high-density nylon bristles are embedded in its upper surface.

[0027] The following description considers two adjacent brush blocks as a group. Brush block A is located relatively forward in the conveying direction, and brush block B is located relatively backward. A front connecting plate extends forward from the front end of brush block B and has a circular hole with a slightly tapered wall to facilitate an interference fit with a pin. The pin moves synchronously with the front connecting plate. A rear connecting plate extends backward from the rear end of brush block A and is parallel to the front connecting plate. It has an elongated, waist-shaped hole on its surface. The hole's shape extends along the tangent of the arc trajectory. Preferably, the elongated hole is machined into a micro-arc shape, with the radius of curvature matching the arc of the pin's movement trajectory. A bushing is inlaid on the inner wall of the hole as a smooth, wear-resistant layer. Therefore, during the sliding process of the pin within the elongated hole, the hole wall is always perpendicular to the pin's sliding direction, minimizing contact stress and resulting in the most uniform wear. The pin's surface is subjected to high-frequency quenching, and a threaded section is machined at the end for installing a lock nut to prevent displacement along the pin's length. The connection method between multiple brush blocks is as follows: Stack the front connecting plate of brush block B together with the rear connecting plate of brush block A, aligning the round hole of the rear block with the oblong hole of the front block. Pass the pin through the round hole and oblong hole in sequence, and tighten the lock nut on the threaded end of the pin. Install a stainless steel snap ring in the snap ring groove of the pin for axial positioning. Connect multiple brush blocks in sequence to form a brush block chain. The pin is a long shaft that runs across the entire cutting table surface to ensure the uniformity of multiple brush block chains in the transverse direction. Finally, the chain wraps around the first and last sets of drive wheel sets to form a closed ring track. Adjust the position of the driven wheel sets to make the track tension moderate.

[0028] Two support arms are arranged parallel to each other at the rear end of brush block A, and dovetail grooves are machined on the inner side for mounting the blades. Two clearance grooves are provided on the blades, corresponding to the positions of the front and rear connecting plates respectively, ensuring that the blades do not collide with the connecting plates when sweeping upwards over the pin. The blade installation position is reverse-positioned under extreme conditions on site: the two brush blocks are placed on the curved surface, separated at their maximum angle and temporarily fixed. In this state, both ends of the blades are inserted into the dovetail grooves at the ends of the support arms, so that the cutting edges of the blades are in contact with the outer cylindrical surface of the pin. Then, the fastening screws are tightened to lock the blades onto the support arms. Finally, the two brush blocks are returned to a horizontal position.

[0029] The specific operation process of this embodiment is as follows: When the track runs on the straight track of the cutting table, the adjacent brush blocks remain absolutely parallel. At this time, the blade installed at the tail of brush block A is hidden in the receiving cavity of brush block B, and the blade edge and the upper pin are suspended in a gap so as not to interfere with each other. When the track moves to the bend of the drive wheel set at both ends of the machine, brush block A first starts to fold downward around the bottom hinge. Since the bottom connection point is locked, the top bristles will spread outward to form an angle. At the same time, the bearing arm at the tail of brush block A lifts the bottom blade upward and draws an arc in the air. When the track bends to the maximum opening angle, the upward-lifted blade scrapes along the pin surface, cutting off the wrapped thread ends. As the angle opens, the gap widens, and the accumulated waste slides outward under the action of gravity, thus completing the automatic cleaning. When the track continues to move forward, brush block B also changes angle, and the angle between the two returns to zero until it returns to the straight segment.

[0030] As a preferred embodiment, the maximum angle between two adjacent brush blocks 1 at the turning point of the drive wheel set is θ, the number of teeth of the drive wheel set is N, and θ = 360° / N is satisfied.

[0031] In this embodiment, the maximum angle at the turning point is determined by the geometric characteristics of the sprocket. When the track is fully attached to the sprocket, the central angle between two adjacent links is equal to 360 degrees divided by the number of teeth on the sprocket. Since the pitch of the bottom hinge matches the pitch of the sprocket in this invention, the maximum angle between adjacent brush blocks is equal to the central angle of the sprocket. Using this constant maximum angle, the assembly position of the blade can be determined to ensure that the blade can rub the pin shaft under the most perfect micro-gap.

[0032] As a preferred embodiment, the cutting edge of the blade 32 is a slightly concave arc shape.

[0033] In this embodiment, the projection of the tangential shearing edge of the blade in the plane formed by the conveying direction and the vertical direction is a slightly concave arc. The radius of curvature of this arc matches the radius of curvature of the outer cylindrical surface of the pin, ensuring that the blade edge always maintains a tangential micro-gap contact with the outer cylindrical surface of the pin during the combined motion of forward withdrawal and upward lifting of the blade, thus avoiding impact interference.

[0034] As a preferred embodiment, the cutting edge of the blade 32 is a flat surface on the side near the pin 25, and an inclined surface on the side away from the pin 25.

[0035] In this embodiment, the side of the cutting edge closest to the pin is a flat surface, and the side away from the pin is an inclined surface. The two sides intersect to form a sharp cutting angle. The flat surface side is close to the pin surface for shearing, while the inclined surface side forms a chip removal slope. The cut wire ends can slide down the inclined surface and will not get stuck between the cutting edge and the pin.

[0036] As a preferred embodiment, the bearing arm 31 is made of spring steel, and its bending section modulus in the vertical plane is greater than its bending section modulus in the horizontal plane.

[0037] In this embodiment, the support arm needs to maintain sufficient rigidity in the vertical plane during operation to ensure that the blade has sufficient cutting force when sweeping upward across the pin. In the horizontal plane, it needs a certain degree of flexibility to accommodate possible positional deviations of the pin. To achieve this anisotropic rigidity, the support arm adopts a spring steel plate with a rectangular cross section.

[0038] As a preferred embodiment, the bottom surface of the receiving cavity 34 is inclined to the outside.

[0039] In this embodiment, the bottom surface of the receiving cavity is not a horizontal plane, but a smooth ramp surface that slopes towards the direction of the angled opening. When the track bends, if a small amount of dust falls into the receiving cavity, this dust can slide out unimpeded along the inclined ramp surface under the action of gravity, and will not accumulate in the receiving cavity and cause any impact.

[0040] Example 2 As attached Figure 6 Appendix Figure 8 As shown, the blade 32 is provided with a groove 35 that matches the radius of curvature of the outer cylindrical surface of the pin 25.

[0041] In this embodiment, the height of the blade is sufficient to cover the pin, and the radius of curvature of the groove opened on its upper part is perfectly matched with the radius of curvature of the outer cylindrical surface of the pin. When the blade sweeps upward, the groove can partially wrap the cylindrical surface of the pin, ensuring that the blade can perfectly fit the circular surface of the object, and increasing the process of rubbing the pin surface, making the line segment easier to fall off.

[0042] The aforementioned drive wheel assembly, pin shaft, etc., are common knowledge known to those skilled in the art, and therefore will not be described in detail in this application.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the present invention.

Claims

1. A tracked worktable for a cutting machine, comprising a drive wheel assembly mounted on the cutting machine frame, characterized in that, It also includes brush blocks (1), a plurality of brush blocks (1) are hinged to each other at the bottom and arranged around the drive wheel assembly to form a track. The brush block (1) includes a base (11) and brush bristles (12) arranged on the base (11). The connector (2) includes a front connecting plate (21) disposed on the front end side wall of the base (11) in the conveying direction, a rear connecting plate (22) disposed on the rear end side wall of the base (11) in the conveying direction, a round hole (23) disposed on the front connecting plate (21), and an elongated hole (24) disposed on the rear connecting plate (22). The front connecting plate (21) and the rear connecting plate (22) of two adjacent brush blocks (1) are connected by a pin (25). The pin (25) passes through the round hole (23) and the elongated hole (24) in succession and is press-fitted with the round hole (23). The upper ends of two adjacent brush blocks (1) can move closer or further away from each other when entering the turning lane of the drive wheel set. The stripper (3) includes two support arms (31) disposed on the rear side wall of the base (11) in the conveying direction and parallel to the conveying direction, a blade (32) disposed at both ends on the bottom of the support arms (31) and parallel to the pin (25), a clearance groove (33) disposed on the blade (32) for avoiding the front connecting plate (21) and the rear connecting plate (22), and a receiving cavity (34) disposed on the front side wall of the base (11) in the conveying direction for accommodating the rear connecting plate (22) and the blade (32).

2. The tracked workbench for a cutting bed according to claim 1, characterized in that, The maximum angle between two adjacent brush blocks (1) at the turning point of the drive wheel set is θ, the number of teeth of the drive wheel set is N, and θ = 360° / N is satisfied.

3. A tracked workbench for a cutting bed according to claim 2, characterized in that, The blade (32) is set parallel to the cutting table surface.

4. A tracked workbench for a cutting bed according to claim 3, characterized in that, The blade (32) has a slightly concave arc-shaped cutting edge.

5. A tracked workbench for a cutting bed according to claim 3, characterized in that, The blade (32) is provided with a groove (35) that matches the radius of curvature of the outer cylindrical surface of the pin (25).

6. A tracked workbench for a cutting bed according to claim 3, characterized in that, The blade (32) has a flat surface on the side of the cutting edge close to the pin (25) and an inclined surface on the side away from the pin (25).

7. A tracked workbench for a cutting bed according to claim 1, characterized in that, The bearing arm (31) is made of spring steel and its bending section modulus in the vertical plane is greater than its bending section modulus in the horizontal plane.

8. A tracked workbench for a cutting bed according to claim 1, characterized in that, A positioning screw is provided between the support arm (31) and the blade (32).

9. A tracked workbench for a cutting bed according to claim 1, characterized in that, The inner bottom of the receiving cavity (34) is inclined to the outer opening.

10. A tracked workbench for a cutting bed according to claim 1, characterized in that, The inner wall of the elongated hole (24) is provided with a smooth and wear-resistant layer.

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