High-speed belt-type CNC cutting machine capable of 360° rotation and cutting

Abstract

The invention discloses a high-speed belt-type CNC cutting machine capable of 360-degree rotation and punching at any angle. The machine comprises a gantry frame and a controller. The frame is provided with a rotary punching device capable of 360-degree rotation and punching at any angle, a guide rail slide-type feeding device and a hydraulic device. The rotary punching device comprises a horizontally movable cutting head arranged at an upper end and a knife die mounting seat arranged at a lower end. The horizontally movable cutting head is arranged on the guide rail of the upper frame through a synchronous belt. The guide rail slide-type feeding device comprises a supporting frame, a cylinder material clamping reciprocating mechanism, a workbench and a belt. The supporting frame is fixedly connected to the frame. The cylinder material clamping reciprocating mechanism comprises a guide rail slide and a pressure rod. Two cylindrical guide rails are arranged in the supporting frame. The guide rail slide is provided with two through holes and is movably sleeved on the cylindrical guide rail through a bearing. The pressure rod is arranged on the guide rail slide. The workbench is the working surface of the frame.

Description

Technical Field

[0001] The present invention belongs to the technical field of CNC cutting machines, and specifically relates to a high-speed belt-type CNC cutting machine capable of cutting all flexible materials. The rotary punching device of the cutting machine can carry multiple cutting dies to improve the cutting efficiency and material utilization rate, and can also realize 360° arbitrary angle rotation. Background Art

[0002] With the improvement of living standards, people's requirements for the shapes and styles of shoes, leather goods and other products are becoming more and more diversified, which means that the shapes of related fabrics that need to be cut are becoming more and more complex, and thus the automation level of cutting machines needs to be continuously improved to save labor and material costs and improve processing efficiency.

[0003] Shoes and bags are generally made by sewing pieces of different shapes. Pieces of different shapes are obtained by cutting fabrics on a cutting machine with a shaped die. The fabrics that can be cut can be leather, cloth, plastic, etc. The cutting machine is a common equipment used for fabric cutting. When working, the mobile die base installed on the cutting machine is driven by power to move on the guide rail. After moving to the set position, the die installed on the die base presses down to cut the fabric, and cuts pieces consistent with the shape of the die from the fabric, thereby completing the material cutting work.

[0004] A rotary punching CNC cutting machine with a publication number of CN106142216B comprises a feeding device and a synchronous deceleration device, wherein the synchronous deceleration device comprises a clamping roller (52) and a power roller (51), wherein two ends of the power roller (51) are respectively pivotally connected to a left fixed block (53) and a right fixed block (54) fixed on a workbench, and two ends of the clamping roller (52) are respectively pivotally connected to a left clamping wheel fixed block (55) and a right clamping wheel fixed block (56) which can be automatically lifted up and down, and a lifting motor (531) is provided on the left fixed block (53), and the lifting motor (531) is connected to a horizontal transmission rod (532), and the transmission rod (532) A left transmission tooth (5321) and a right transmission tooth (5322) are respectively provided at the two ends of the gear train. The left transmission tooth (5321) and the right transmission tooth (5322) are respectively matched with a left lifting shaft (533) and a right lifting shaft (534) provided with a rack at the lower end to form a rack transmission. The left and right lifting shafts are respectively connected to the left and right clamping wheel fixing blocks. A servo motor (541) is provided on the right fixing block (54). The servo motor (541) is connected to the lifting worm. The lifting worm drives an upper worm wheel (543) and a lower worm wheel (544). The upper worm wheel (543) and the lower worm wheel (544) are respectively connected to and drive the clamping roller (52) and the power roller (51). The feeding device includes a positioning mechanism, a reciprocating clamping mechanism, and a feeding mechanism; the positioning mechanism includes a positioning plate (73) that performs vertical reciprocating motion and clamps the blank belt (77) on the workbench (72); the reciprocating clamping mechanism includes a moving table (74) that performs horizontal reciprocating motion, the moving table (74) is arranged below the blank belt (77) and the belt (78), and the moving table (74) is provided with a clamping head (5) that presses the blank belt (77) on the moving table (74); the feeding mechanism includes a movable feeding car (76), and the front end of the feeding car (76) is also provided with a pre-pressing roller or drum for initially gathering and pressing the blank belt (77). The structure used by the cutting machine to drive the belt movement and the synchronous deceleration structure are relatively complex. Although a very good cutting effect can be achieved, the worm gear, worm, etc. are all customized parts with high cost. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned shortcomings in the prior art and to provide a high-speed belt-type CNC cutting machine which can rotate and punch at any angle of 360° and has good cutting effect and low production cost.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: it includes a gantry frame and a controller, the frame is provided with a rotary punching device capable of 360° rotary punching, a guide rail slide feeding device and a hydraulic system, the frame is divided into an upper frame and a lower frame; the rotary punching device includes a horizontally movable cutting head arranged at the upper end and a die cutter mounting seat arranged at the lower end, the horizontally movable cutting head is arranged on the guide rail of the upper frame through a synchronous belt. The rotary punching device also includes a cylinder, a cylinder barrel, a protective cover and a hanging plate, the cylinder barrel is arranged on the horizontally movable cutting head, the lower end of the cylinder barrel is provided with a rotary cylinder sleeve, the outer wall of the lower end of the rotary cylinder sleeve is connected to the inner wall of the cylinder by a thread to rotate and drive the cylinder, the cylinder barrel, the rotary cylinder sleeve and the cylinder are provided with a piston assembly, the die cutter mounting seat is arranged below the hanging plate, the die cutter mounting seat can be a dihedron or a polyhedron to install two or more different die cutters, the hanging plate is connected to the protective cover by a rotating gear, and the protective cover is fixed on the piston rod of the piston assembly. Side plates are provided on both sides of the lower surface of the suspension plate, and a rotating shaft is provided on the side plates. The rotating shaft passes through the cutter die mounting seat and is fixedly connected to the cutter die mounting seat. The rotary cylinder is fixedly provided on the side plates and is fixedly connected to one end of the rotating shaft to drive the rotating shaft to rotate. A limiting sleeve is provided on the other end of the rotating shaft, and a locating pin and a cylinder are provided above the limiting sleeve. The cylinder is fixedly provided on the side plates, and locating grooves are provided on the corresponding sides of the cutter die mounting seat and the side plates. A hole for embedding the locating pin is opened on the side plates at the corresponding position of the locating groove. The locating pin is fixedly connected to the piston rod of the cylinder to drive the locating pin to lock and unlock the cutter die mounting seat.

[0007] The guide rail slide type feeding device includes a supporting frame, a cylinder material clamping reciprocating mechanism, a workbench and a belt. The supporting frame is fixedly connected to the frame. The cylinder material clamping reciprocating mechanism includes a guide rail slide, a cylinder pressure rod, a synchronous belt and a synchronous pulley. Two cylindrical guide rails are arranged in the supporting frame. The guide rail slide is provided with two through holes and is movably sleeved on the cylindrical guide rails through bearings. A connecting plate is fixed under the guide rail slide, and the connecting plate is fixedly connected to the outer side surface of the synchronous belt. The synchronous pulley is fixedly set on the supporting frame, one of the synchronous pulleys is connected to the servo motor, and the synchronous belt is sleeved on the outside of the synchronous pulley. The cylinder pressure rod is arranged on the guide rail slide, and the first cylinder is arranged at both ends of the cylinder pressure rod. The workbench is the working surface of the lower frame.

[0008] A first belt pulley is fixedly provided on a side of the frame where the supporting frame is not provided through a first support rod, and a second belt pulley is fixedly provided on a side of the supporting frame away from the frame through a second support rod, the highest positions of the first belt pulley and the second belt pulley are consistent with the plane of the workbench, a first tensioning wheel is provided below the first belt pulley, and a second tensioning wheel is provided below the second belt pulley, the first tensioning wheel is fixedly provided on a side of the frame close to the supporting frame, and the second tensioning wheel is fixedly provided below an end of the supporting frame close to the second belt pulley, and the belt is tensioned on the outside of the first belt pulley, the second belt pulley, the first tensioning wheel, and the second tensioning wheel.

[0009] In the present invention, further, the servo motor is fixedly arranged below the supporting frame through a right-angle reducer.

[0010] In the present invention, further, a second cylinder is fixedly arranged on the lower frame, the second cylinder is located on a side of the lower frame close to the first cylinder, and the second cylinder is symmetrically distributed at both ends of the lower frame with the belt as the symmetry axis.

[0011] In the present invention, further, a strip hole is provided on the first support rod for adjusting the position of the first pulley.

[0012] In the present invention, further, a strip hole is provided on the second support rod for adjusting the position of the second pulley.

[0013] In the present invention, further, two sets of damping blocks are provided at both ends of the guide rail slide in the sliding direction.

[0014] In the present invention, preferably, a group of damping blocks includes a metal damping block and a nylon damping block.

[0015] The beneficial effects of the present invention are as follows: the guide rail slide type feeding device has a simple structure, high precision and low production cost, and the cylinder pressure rod can be lifted up and down by the cylinder, thereby pressing the belt and the material to be punched, so that the material to be punched moves with the belt; during punching, the guide rail slide type feeding device stops moving, and the second cylinder rises to press the material to be punched, thereby ensuring the accuracy and stability of punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings and figure numerals used in the description of the embodiments.

[0017] Figure 1 This is the front view of a high-speed belt-type CNC cutting machine that can rotate and punch at any angle of 360°.

[0018] Figure 2 It is a structural schematic diagram of the support frame and the cylinder clamping material reciprocating movement mechanism.

[0019] Figure 3 It is a structural schematic diagram of the guide rail slide.

[0020] Figure 4 It is a structural schematic diagram of the connection between the guide rail slide and the synchronous belt.

[0021] Figure 5 A three-dimensional assembly diagram of the visible cylinder of the rotary blanking device.

[0022] Figure 6 A three-dimensional assembly diagram of the rotary cylinder can be seen for the rotary blanking device.

[0023] Explanation of the accompanying drawings: 1-frame, 2-rotary punching device, 3-guide rail slide feeding device, 4-support frame, 5-cylinder clamping reciprocating mechanism, 51-guide rail slide, 511-damping block, 52-cylinder pressure rod, 53-synchronous belt, 54-synchronous pulley, 55-first cylinder, 6-workbench, 7-belt, 8-cylindrical guide rail, 9-first support rod, 10-first pulley, 11-second support rod, 12-second pulley, 13-first tensioning wheel, 14-second tensioning wheel, 15-servo motor, 16-second cylinder. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Example 1, see Figure 1-4, including a gantry frame 1 and a controller, the frame 1 is provided with a rotary punching device 2, a guide rail slide feeding device 3 and a hydraulic system, and the frame is divided into an upper frame and a lower frame; the rotary punching device 2 includes a horizontally movable cutting head arranged at the upper end and a knife die mounting seat arranged at the lower end, the horizontally movable cutting head is arranged on the guide rail of the upper frame through a synchronous belt, the rotary punching device also includes a cylinder, a cylinder barrel, a protective cover and a hanging plate, the cylinder barrel is arranged on the horizontally movable cutting head, the lower end of the cylinder barrel is provided with a rotary cylinder sleeve, the outer wall of the lower end of the rotary cylinder sleeve is rotatably connected with the inner wall of the cylinder through a thread and drives the cylinder, the cylinder barrel, the rotary cylinder sleeve and the interior of the cylinder are penetrated by a piston assembly, the knife die mounting seat is arranged below the hanging plate, the knife die mounting seat can be a dihedron or a polyhedron, so as to install two or more different knife dies, the hanging plate is rotatably connected with the protective cover through a rotating gear, and the protective cover is fixed on the piston rod of the piston assembly. Side plates are arranged on both sides of the lower surface of the suspension plate, and a rotating shaft is arranged on the side plates. The rotating shaft penetrates the die cutter mounting seat and is fixedly connected to the die cutter mounting seat. The rotary cylinder is fixedly arranged on the side plates and is fixedly connected to one end of the rotating shaft to drive the rotating shaft to rotate. A limiting sleeve is arranged on the other end of the rotating shaft. A positioning pin and a cylinder are arranged above the limiting sleeve. The cylinder is fixedly arranged on the side plates. The die cutter mounting seat and the corresponding side of the side plates are provided with positioning grooves. The side plates are provided with holes for embedding the positioning pins at the corresponding positions of the positioning grooves. The positioning pins are fixedly connected to the piston rod of the cylinder to drive the positioning pins to lock and unlock the die cutter mounting seat. The rotary blanking device 2 moves laterally on the guide rail under the action of the synchronous belt, and the material on the unloading table is cut through the driving mechanism.

[0026] The guide rail slide type feeding device 3 includes a supporting frame 4, a cylinder material clamping reciprocating mechanism 5, a workbench 6 and a belt 7. The supporting frame 4 is fixedly connected to the frame 1. The cylinder material clamping reciprocating mechanism 5 includes a guide rail slide 51, a cylinder pressure rod 52, a synchronous belt 53 and a synchronous pulley 54. Two cylindrical guide rails 8 are arranged in the supporting frame 4. The guide rail slide 51 is provided with two through holes and is movably sleeved on the cylindrical guide rail 8 through a bearing. A connecting plate is fixed under the guide rail slide 51, and the connecting plate is fixedly connected to the outer side surface of the synchronous belt 53. The synchronous pulley 54 is fixedly set on the supporting frame 4, one of the synchronous pulleys 54 is connected to the servo motor 15, and the synchronous belt 53 is sleeved on the outside of the synchronous pulley 54. The cylinder pressure rod 52 is arranged on the guide rail slide 51, and the first cylinder 55 is arranged at both ends of the cylinder pressure rod 52. The workbench 6 is the working surface of the lower frame.

[0027] A first belt pulley 10 is fixedly provided on the side of the frame 1 where the supporting frame is not provided through a first support rod 9, and a second belt pulley 12 is fixedly provided on the side of the supporting frame 4 away from the frame through a second support rod 11. The highest positions of the first belt pulley 10 and the second belt pulley 12 are both consistent with the plane of the workbench 6. A first tensioning wheel 13 is provided below the first belt pulley 10, and a second tensioning wheel 14 is provided below the second belt pulley 12. The first tensioning wheel 13 is fixedly provided on a side of the frame 1 close to the supporting frame 4, and the second tensioning wheel 14 is fixedly provided below the end of the supporting frame 4 close to the second belt pulley 12. The belt 7 is tensioned on the outside of the first belt pulley 10, the second belt pulley 12, the first tensioning wheel 13, and the second tensioning wheel 14.

[0028] The servo motor 15 is fixedly arranged below the support frame 4 via a right-angle reducer.

[0029] A second cylinder 16 is also fixedly disposed on the lower frame. The second cylinder 16 is located on one side of the lower frame close to the first cylinder 55, and the second cylinder 16 is symmetrically distributed at both ends of the lower frame with the belt as the symmetry axis.

[0030] The first support rod 9 is provided with a strip hole for adjusting the position of the first pulley 10 .

[0031] The second support rod 11 is provided with a strip hole for adjusting the position of the second pulley 12 .

[0032] Example 2, see Figure 1-4, including a gantry frame 1 and a controller, the frame 1 is provided with a rotary punching device 2, a guide rail slide feeding device 3 and a hydraulic system, and the frame is divided into an upper frame and a lower frame; the rotary punching device 2 includes a horizontally movable cutting head arranged at the upper end and a knife die mounting seat arranged at the lower end, the horizontally movable cutting head is arranged on the guide rail of the upper frame through a synchronous belt, the rotary punching device also includes a cylinder, a cylinder barrel, a protective cover and a hanging plate, the cylinder barrel is arranged on the horizontally movable cutting head, the lower end of the cylinder barrel is provided with a rotary cylinder sleeve, the outer wall of the lower end of the rotary cylinder sleeve is rotatably connected with the inner wall of the cylinder through a thread and drives the cylinder, the cylinder barrel, the rotary cylinder sleeve and the interior of the cylinder are penetrated by a piston assembly, the knife die mounting seat is arranged below the hanging plate, the knife die mounting seat can be a dihedron or a polyhedron, so as to install two or more different knife dies, the hanging plate is rotatably connected with the protective cover through a rotating gear, and the protective cover is fixed on the piston rod of the piston assembly. Side panels are provided on both sides of the lower surface of the suspension plate, and a rotating shaft is provided on the side panels. The rotating shaft penetrates the die cutter mounting seat and is fixedly connected to the die cutter mounting seat. The rotary cylinder is fixedly provided on the side panels and is fixedly connected to one end of the rotating shaft to drive the rotating shaft to rotate. A limiting sleeve is provided on the other end of the rotating shaft. A positioning pin and a cylinder are provided above the limiting sleeve. The cylinder is fixedly provided on the side panels. The die cutter mounting seat and the side panels are provided with positioning grooves on the corresponding sides. The side panels are provided with holes for embedding the positioning pins at the corresponding positions of the positioning grooves. The positioning pins are fixedly connected to the piston rod of the cylinder to drive the positioning pins to lock and unlock the die cutter mounting seat. The rotary blanking device 2 moves laterally on the guide rail under the action of the synchronous belt, and the fabric on the unloading table is cut through the driving mechanism.

[0033] The guide rail slide feeding device 3 includes a supporting frame 4, a cylinder material clamping reciprocating mechanism 5, a workbench 6 and a belt 7. The supporting frame 4 is fixedly connected to the frame 1. The cylinder material clamping reciprocating mechanism 5 includes a guide rail slide 51, a cylinder pressure rod 52, a synchronous belt 53 and a synchronous pulley 54. Two cylindrical guide rails 8 are arranged in the supporting frame 4. The guide rail slide 51 is provided with two through holes and is movably sleeved on the cylindrical guide rail 8 through a bearing. A connecting plate is fixed under the guide rail slide 51, and the connecting plate is fixedly connected to the outer side surface of the synchronous belt 53. The synchronous pulley 54 is fixedly arranged on the supporting frame 4, one of the synchronous pulleys 54 is connected to the servo motor 15, and the synchronous belt 53 is sleeved on the outside of the synchronous pulley 54. The cylinder pressure rod 52 is arranged on the guide rail slide 51, and the first cylinder 55 is arranged at both ends of the cylinder pressure rod 52. The workbench 6 is the working surface of the lower frame 1.

[0034] A first belt pulley 10 is fixedly provided on the side of the frame 1 where the supporting frame is not provided through a first support rod 9, and a second belt pulley 12 is fixedly provided on the side of the supporting frame 4 away from the frame through a second support rod 11. The highest positions of the first belt pulley 10 and the second belt pulley 12 are both consistent with the plane of the workbench 6. A first tensioning wheel 13 is provided below the first belt pulley 10, and a second tensioning wheel 14 is provided below the second belt pulley 12. The first tensioning wheel 13 is fixedly provided on a side of the frame 1 close to the supporting frame 4, and the second tensioning wheel 14 is fixedly provided below the end of the supporting frame 4 close to the second belt pulley 12. The belt 7 is tensioned on the outside of the first belt pulley 10, the second belt pulley 12, the first tensioning wheel 13, and the second tensioning wheel 14.

[0035] The servo motor 15 is fixedly arranged below the support frame 4 via a right-angle reducer.

[0036] A second cylinder 16 is also fixedly disposed on the lower frame. The second cylinder 16 is located on one side of the lower frame close to the first cylinder 55, and the second cylinder 16 is symmetrically distributed at both ends of the lower frame with the belt as the symmetry axis.

[0037] The first support rod 9 is provided with a strip hole for adjusting the position of the first pulley 10 .

[0038] The second support rod 11 is provided with a strip hole for adjusting the position of the second pulley 12 .

[0039] Two sets of damping blocks 511 are provided at both ends of the guide rail slide 51 in the sliding direction.

[0040] A set of damping blocks 511 includes a metal damping block and a nylon damping block. The metal damping block has a good blocking effect, and the nylon damping block greatly reduces the noise caused by the guide rail slide 51 colliding with the support frame 4, while increasing the service life of the components.

[0041] Working principle: The servo motor 15 rotates to drive the synchronous pulley 54 to rotate, and then drives the synchronous belt 53 to move, so that the guide rail slide 51 slides on the cylindrical guide rail 8 together with the synchronous belt 53. The forward rotation time and reverse rotation time of the servo motor 15 are determined according to the stroke of the guide rail slide 51 on the cylindrical guide rail 8. After the servo motor 15 stops rotating, the guide rail slide 51 will collide with the support frame 4 due to inertia. The setting of the damping block plays a role in deceleration and protects the guide rail slide 51 and the support frame 4 at the same time. ; The cylinder pressure rod 52 moves back and forth following the guide rail slide 51, and the cylinder on the cylinder pressure rod 52 is adjusted so that the cylinder pressure rod 52 is tightly connected with the belt. The movement of the cylinder pressure rod 52 drives the movement of the belt 7 and the material to be punched. The belt 7 forces the first pulley 10, the second pulley 12, the first tensioning wheel 13 and the second tensioning wheel 14 to rotate, thereby realizing high-speed feeding; during punching, the guide rail slide feeding device stops moving, and the second cylinder rises to realize the pressing of the material to be punched, ensuring the accuracy and stability of punching.

[0042] How the controller controls the opening and closing of the cylinder and how the servo motor drives the cylinder clamping reciprocating movement mechanism to move are well known to those skilled in the art.

[0043] It should be noted that the above describes the embodiments of the present invention. However, those skilled in the art should understand that the present invention is not limited to the above embodiments, which are only used to illustrate the principles of the present invention. The present invention may be subject to various changes and modifications without departing from the scope of the present invention, and these changes and modifications all fall within the scope of the present invention to be protected.

Claims

1. A high-speed belt-type CNC cutting machine capable of 360° arbitrary angle rotation and blanking, comprising a gantry frame and a controller, characterized in that: The frame is provided with a rotary punching device capable of 360° rotary punching at any angle, a guide rail slide feeding device, and a hydraulic system. The frame is divided into an upper frame and a lower frame. The rotary punching device comprises a horizontally movable cutting head arranged at the upper end and a knife die mounting seat arranged at the lower end, wherein the horizontally movable cutting head is arranged on the guide rail of the upper frame through a synchronous belt; The guide rail slide type feeding device comprises a supporting frame, a cylinder clamping reciprocating mechanism, a workbench and a belt, the supporting frame is fixedly connected to the lower frame, and the cylinder clamping reciprocating mechanism comprises a guide rail slide, a cylinder pressure rod, a synchronous belt and a synchronous pulley, and two cylindrical guide rails are arranged in the supporting frame, and the guide rail slide is provided with two through holes, and is movably sleeved on the cylindrical guide rail through a bearing, and a connecting plate is fixedly provided under the guide rail slide, and the connecting plate is fixedly connected to the outer side surface of the synchronous belt, and the synchronous belt pulley is fixedly arranged on the supporting frame, one of the synchronous belt pulleys is connected to the servo motor, and the synchronous belt is sleeved outside the synchronous belt pulley, and the cylinder pressure rod is arranged on the guide rail slide, and a first cylinder is arranged at both ends of the cylinder pressure rod, and the cylinder on the cylinder pressure rod is adjusted so that the cylinder pressure rod is tightly connected to the belt, and the movement of the cylinder pressure rod drives the movement of the belt and the material to be punched, and the workbench is the working surface of the lower frame; The first and second tensioning wheels are fixedly provided on the frame at a side where the supporting frame is not provided, through a first supporting rod, and a second tensioning wheel is fixedly provided on the supporting frame at a side away from the frame, and the highest positions of the first and second tensioning wheels coincide with the plane of the workbench, a first tensioning wheel is provided below the first tensioning wheel, and a second tensioning wheel is provided below the second tensioning wheel, the first tensioning wheel is fixedly provided on a side of the frame close to the supporting frame, and the second tensioning wheel is fixedly provided below an end of the supporting frame close to the second tensioning wheel, and the belt is tensioned between the first tensioning wheel, the second tensioning wheel, and the first tensioning wheel. The servo motor is fixedly arranged under the support frame through a right-angle reducer; a second cylinder is also fixedly arranged on the lower frame, and the second cylinder is located on the side of the lower frame close to the first cylinder, and the second cylinder is symmetrically distributed at both ends of the lower frame with the belt as the symmetry axis; a strip hole is arranged on the first support rod for adjusting the position of the first pulley; a strip hole is arranged on the second support rod for adjusting the position of the second pulley; two groups of damping blocks are arranged at both ends of the guide rail slide in the sliding direction; a group of damping blocks includes a metal damping block and a nylon damping block.

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