Plate and pipe integrated laser cutting machine with automatic adjusting tool

Abstract

The invention relates to the technical field of laser cutting, and provides a plate and pipe integrated laser cutting machine with an automatic adjusting tool, which comprises a workbench, a top cover arranged on the top of the workbench, a laser generator arranged on one side of the top cover, a driving assembly arranged in the workbench, and a self-adaptive assembly arranged on the workbench, an automatic feeding assembly is arranged on the top cover, a fourth arc-shaped groove is formed in the position, on one side of the self-adaption assembly, of the workbench, and a conveying mechanism is arranged at the position, at the bottom of the fourth arc-shaped groove, of the workbench. Efficient and stable clamping of a pipe is achieved through the self-adaption assembly, it is ensured that a fixing block is precisely separated and fits the shape of the pipe through cooperation of a V-shaped rod and a third spring, meanwhile, rolling wheels on a cylinder roll in the pipe conveying process to reduce friction, smooth movement of the pipe is ensured, and in addition, the fixing block, a gear and clamping teeth are driven by a motor to move stably. The three fixing block sets can be synchronously driven to rotate, and continuous and accurate cutting of the pipes is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and more specifically, to a plate-tube integrated laser cutting machine with an automatic adjustment tooling. Background Art

[0002] As an important technology in the field of modern industrial manufacturing, laser cutting technology occupies a crucial position in metal cutting due to its high precision, high efficiency, high flexibility, and non-contact processing characteristics. The working principle of a laser cutting machine is mainly to emit laser light from a laser, which is focused into a laser beam with a high power density through a series of precise optical path systems. When this laser beam irradiates the surface of the workpiece, due to the extremely high energy of the laser beam, the local area of the workpiece can quickly reach the melting point or even the boiling point, thereby achieving rapid cutting of the material. In current industrial applications, with the increasing market demand for product diversification and personalization, laser cutting machines not only need to be able to process traditional plates but also need to have the ability to cut pipes efficiently and precisely. As two common industrial raw materials, plates and pipes have significant differences in their structural forms, material thicknesses, and application scenarios, which pose higher requirements for the design of laser cutting machines.

[0003] However, although the plate-tube integrated laser cutting machines on the market can achieve simultaneous cutting of plates and pipes to a certain extent, due to the large differences in parameters such as the shape, diameter, and wall thickness of the pipes, traditional clamping devices often have difficulty providing a stable and reliable clamping effect. In actual operation, operators need to frequently replace different clamping blocks according to the specific shape of the pipes, which not only increases the operation complexity, reduces work efficiency, but also may lead to a decrease in cutting accuracy due to unstable clamping, and even cause workpiece damage or machine failure. Summary of the Invention

[0004] The present invention provides a plate-tube integrated laser cutting machine with an automatic adjustment tooling. Through the adaptive component, efficient and stable clamping of the pipe is achieved. By the cooperation of the V-shaped rod and the third spring, it is ensured that the fixed block is accurately separated and conforms to the shape of the pipe, effectively solving the problem of unstable clamping caused by the diverse shapes of pipes in traditional clamping methods. At the same time, the roller on the cylinder reduces friction during the pipe transportation process through rolling, ensuring smooth movement of the pipe, which not only improves the cutting stability but also enhances the cutting efficiency. In addition, under the drive of the motor, the fixed block, gear, and gear teeth can synchronously drive the rotation of three groups of fixed block groups to achieve continuous and precise cutting of the pipe, so as to solve the problems raised in the background art.

[0005] The technical solution of the present invention is as follows:

[0006] A tube-and-plate integrated laser cutting machine with an automatic adjustment tooling, comprising: a workbench, a top cover is arranged on the top of the workbench, a square groove one is opened on the top cover, a laser generator is arranged on one side of the top cover, a driving component is arranged in the workbench, an adaptive component is arranged on the workbench, an automatic loading component is arranged on the top cover, an arc groove four is opened on the workbench on one side of the adaptive component, and a conveying mechanism is arranged at the bottom of the arc groove four on the workbench;

[0007] The driving component includes a motor fixedly connected to the inner wall of the workbench, an output end of the motor is fixedly connected with a rotating shaft one, a rotating shaft two and a rotating shaft three are sequentially arranged on one side of the rotating shaft one on the workbench, and gears are fixedly connected to the sides of the rotating shaft one, the rotating shaft two and the rotating shaft three away from the workbench;

[0008] The adaptive component includes an electromagnetic slide rail fixedly connected to the bottom of the workbench, a fixed block group is slidably connected to the electromagnetic slide rail, there are three groups of the fixed block group, each group of the fixed block group includes two fixed blocks, the fixed blocks are semicircular, a plurality of teeth are fixedly connected to the arc surfaces of the two fixed blocks, a plurality of the teeth are provided, and an arc block is fixedly connected to the fixed block on one side of the teeth, and the arc block is inside the electromagnetic slide rail.

[0009] Further, the rotating shaft one and the rotating shaft two are connected by a belt one in transmission, and the rotating shaft two and the rotating shaft three are connected by a belt two in transmission.

[0010] Further, an arc groove one is opened at a position on the electromagnetic slide rail opposite to the gear. When the fixed block group slides to the arc groove one, a plurality of teeth on the fixed block group are engaged with the gear.

[0011] Further, circular grooves are opened on opposite sides of the two fixed blocks, a plurality of the circular grooves are provided, cylinders are slidably connected in the circular grooves, a first spring is fixedly connected between the cylinders and the circular grooves, an arc groove two is opened at an end of the cylinder away from the first spring, and a roller is rotatably connected in the arc groove two. When the pipe contacts the roller, when the conveying mechanism pushes the pipe in the direction of the laser generator, the pipe drives the roller to rotate, facilitating the movement of the pipe.

[0012] Further, square grooves II are formed at both ends of one of the arc-shaped blocks in each fixed block group. Square grooves III are formed on both sides of the square groove II. A spherical ball is slidably connected in the square groove III. A second spring is fixedly connected between the spherical ball and the square groove III. Limit blocks are fixedly connected to both ends of the other arc-shaped block in the fixed block group. Arc-shaped depressions are provided on both sides of the middle of the limit block. When the limit block is snapped into the square groove III, the spherical balls on both sides are pushed during the process of entering the square groove III. The spherical balls compress the second spring. As the limit block is gradually pushed in, the spherical balls slide to the arc-shaped depressions on both sides of the middle of the limit block, fit with the middle of the limit block through the thrust of the second spring, and lock the limit block.

[0013] Further, the automatic feeding assembly includes a V-shaped rod connected to the square groove I through a rotating shaft. The rotating shaft penetrates through the V-shaped rod. A third spring is fixedly connected between the V-shaped rod and the top cover. A through groove I is formed on the top cover on one side of the V-shaped rod. One end of the V-shaped rod close to the through groove I is connected to a rotating block I through the rotating shaft. The rotating block I is rotatably connected in the through groove I. A through groove II is formed on the top cover between the two through grooves I. A rotating block II is rotatably connected in the through groove II. Storage boxes are fixedly connected to the top cover at the top of the through groove I and the through groove II.

[0014] Further, arc-shaped grooves III are formed on one side of the rotating block I and the rotating block II. Through grooves III are formed at the ends of the through groove I and the through groove II away from the V-shaped rod. Fixed rods are fixedly connected to the ends of the rotating block I and the rotating block II away from the V-shaped rod. The two fixed rods are connected by a third belt.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention realizes the efficient and stable clamping of the pipe through the adaptive assembly. By using the cooperation of the V-shaped rod and the third spring, it ensures that the fixed blocks are accurately separated and fit the shape of the pipe, effectively solving the problem of unstable clamping caused by various pipe shapes in the traditional clamping method. At the same time, the rollers on the cylinder reduce friction through rolling during the pipe conveying process, ensuring the smooth movement of the pipe, improving both the cutting stability and the cutting efficiency. In addition, driven by the motor, the fixed blocks, gears, and teeth can synchronously drive the three fixed block groups to rotate, realizing continuous and precise cutting of the pipe.

[0017] 2. When the fixing blocks are separated in the present invention, the V-shaped rod rotates to drive the first rotating block and the second rotating block to rotate, enabling the pipe to accurately fall into the conveying mechanism, ensuring that only one pipe drops each time and avoiding accumulation. At the same time, the rotation of the first rotating block drives the third belt and the second rotating block, realizing the sequential dropping of the pipes in multiple storage boxes, maintaining smooth and interference-free conveying. This innovative design not only improves the automation level of pipe processing but also significantly enhances the efficiency and stability of the production line. Brief Description of the Drawings

[0018] Figure 1 is the perspective view of the device of the present invention;

[0019] Figure 2 is the structural diagram of the driving component of the device of the present invention;

[0020] Figure 3 is the structural diagram of the device of the present invention;

[0021] Figure 4 is the structural diagram of the fixing block group of the device of the present invention;

[0022] Figure 5 is the present invention Figure 2 the enlarged view at A in;

[0023] Figure 6 is the present invention Figure 2 the enlarged view at B in;

[0024] Figure 7 is the present invention Figure 3 the enlarged view at C in.

[0025] In the figure:

[0026] 1. Workbench; 11. Top cover; 111. First square groove; 2. Laser generator; 3. Driving component; 31. Motor; 32. First rotating shaft; 321. First belt; 322. Second belt; 33. Second rotating shaft; 34. Third rotating shaft; 35. Gear; 4. Adaptive component; 41. Electromagnetic slide rail; 411. First arc groove; 42. Fixing block group; 421. Fixing block; 4211. Circular groove; 4212. Cylinder; 4213. First spring; 4214. Second arc groove; 4215. Roller; 43. Tooth; 44. Arc block; 441. Second square groove; 442. Third square groove; 443. Sphere; 444. Second spring; 445. Limiting block; 5. Automatic feeding component; 51. V-shaped rod; 52. Third spring; 53. First through groove; 54. First rotating block; 55. Second through groove; 56. Second rotating block; 561. Third arc groove; 562. Third through groove; 563. Fixed rod; 564. Third belt; 57. Storage box; 6. Fourth arc groove; 7. Conveying mechanism. Detailed Description of the Invention

[0027] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figures 1-7 As shown, the present invention provides a plate-tube integrated laser cutting machine with automatic adjustment tooling, comprising: a workbench 1, a top cover 11 is arranged on the top of the workbench 1, a square groove 111 is opened on the top cover 11, a laser generator 2 is arranged on one side of the top cover 11, a driving component 3 is arranged in the workbench 1, an adaptive component 4 is arranged on the workbench 1, an automatic feeding component 5 is arranged on the top cover 11, an arc groove 46 is opened on one side of the adaptive component 4 on the workbench 1, and a conveying mechanism 7 is arranged on the workbench 1 at the bottom of the arc groove 46;

[0029] The driving assembly 3 includes a motor 31 fixedly connected to the inner wall of the workbench 1, the output end of the motor 31 is fixedly connected to a rotating shaft 1 32, a rotating shaft 2 33 and a rotating shaft 34 are sequentially arranged on one side of the rotating shaft 1 32 on the workbench 1, and a gear 35 is fixedly connected to the side of the rotating shaft 1 32, the rotating shaft 2 33 and the rotating shaft 3 34 away from the workbench 1;

[0030] The adaptive component 4 includes an electromagnetic slide rail 41 fixedly connected to the bottom of the workbench 1, and a fixed block group 42 is slidably connected to the electromagnetic slide rail 41. The fixed block group 42 is provided with three groups, and each group of the fixed block group 42 includes two fixed blocks 421. The fixed blocks 421 are semicircular, and the arc surfaces of the two fixed blocks 421 are fixedly connected with teeth 43. The teeth 43 are provided with a plurality of teeth. An arc block 44 is fixedly connected to the fixed block 421 on one side of the teeth 43, and the arc block 44 is in the electromagnetic slide rail 41.

[0031] As a technical solution of the present invention, the rotating shaft 1 32 and the rotating shaft 2 33 are connected by a belt 1 321, and the rotating shaft 2 33 and the rotating shaft 3 34 are connected by a belt 2 322. When the rotating shaft 1 32 rotates, the belt 1 321 slides on the rotating shaft 2 33, thereby driving the rotating shaft 2 33 to rotate, and the rotating shaft 2 33 drives the rotating shaft 3 34 to rotate through the belt 2 322, so that the gears 35 on the rotating shaft 1 32, the rotating shaft 2 33 and the rotating shaft 3 34 are engaged with the teeth 43 on the three groups of fixed block groups 42.

[0032] As a technical solution of the present invention, an arc groove 411 is provided on the electromagnetic slide rail 41 at a position opposite to the gear 35. When the fixed block group 42 slides to the arc groove 411, a plurality of latch teeth 43 on the fixed block group 42 engage with the gear 35. When the gear 35 rotates, the fixed block group 42 is driven to rotate.

[0033] As a technical solution of the present invention, circular grooves 4211 are formed on the opposite sides of the two fixing blocks 421. A plurality of the circular grooves 4211 are provided. A cylinder 4212 is slidably connected in the circular groove 4211. A first spring 4213 is fixedly connected between the cylinder 4212 and the circular groove 4211. An arc-shaped groove two 4214 is formed at one end of the cylinder 4212 away from the first spring 4213. A roller 4215 is rotatably connected in the arc-shaped groove two 4214. When the pipe contacts the roller 4215, when the conveying mechanism 7 pushes the pipe in the direction of the laser generator 2, the pipe drives the roller 4215 to rotate, facilitating the movement of the pipe, so that the pipe can move smoothly under the push of the conveying mechanism 7, ensuring both the stability of the cutting process and improving the cutting efficiency.

[0034] As a technical solution of the present invention, square grooves two 441 are formed at both ends of one of the arc-shaped blocks 44 in each fixing block group 42. Square grooves three 442 are formed on both sides of the square groove two 441. A spherical ball 443 is slidably connected in the square groove three 442. A second spring 444 is fixedly connected between the spherical ball 443 and the square groove three 442. Limiting blocks 445 are fixedly connected to both ends of the other arc-shaped block 44 in the fixing block group 42. Arc-shaped depressions are provided on both sides of the middle of the limiting block 445. When the limiting block 445 is inserted into the square groove three 442, the spherical balls 443 on both sides are pushed during the process of entering the square groove three 442. The spherical balls 443 compress the second spring 444, and as the limiting block 445 is gradually pushed in, the spherical balls 443 slide to the arc-shaped depressions on both sides of the middle of the limiting block 445, and are attached to the middle of the limiting block 445 by the thrust of the second spring 444 and lock the limiting block 445, so that the two fixing blocks 421 are engaged with each other.

[0035] As a technical solution of the present invention, the automatic feeding assembly 5 includes a V-shaped rod 51 connected in the square groove one 111 through a rotating shaft. The rotating shaft penetrates through the V-shaped rod 51. A third spring 52 is fixedly connected between the V-shaped rod 51 and the top cover 11. After the two middle fixing blocks 421 are separated from each other, the third spring 52 loses the restriction of the arc-shaped block 44 and pulls the V-shaped rod 51 back, thereby driving the rotating block one 54 to rotate. A through groove one 53 is formed on the top cover 11 on one side of the V-shaped rod 51. One end of the V-shaped rod 51 close to the through groove one 53 is connected to a rotating block one 54 through the rotating shaft. The rotating block one 54 is rotatably connected in the through groove one 53. A through groove two 55 is formed on the top cover 11 between the two through grooves one 53. A rotating block two 56 is rotatably connected in the through groove two 55. Storage boxes 57 are fixedly connected to the top cover 11 at the tops of the through groove one 53 and the through groove two 55.

[0036] As a technical solution of the present invention, an arc-shaped groove III 561 is provided on one side of the first rotating block 54 and the second rotating block 56. A through groove III 562 is provided at one end of the first through groove 53 and the second through groove 55 away from the V-shaped rod 51. Fixed rods 563 are fixedly connected to one ends of the first rotating block 54 and the second rotating block 56 away from the V-shaped rod 51. The two fixed rods 563 are drivingly connected by a third belt 564.

[0037] Working principle:

[0038] As Figures 2-7 shown, by controlling the conveying mechanism 7 to first push the middle pipe to the position of the fixed block 421, and then starting the electromagnetic slide rail 41 to drive the two side fixed blocks 421 to move towards the middle of the electromagnetic slide rail 41. When the two side fixed blocks 421 slide towards the middle, the fixed block 421 pushes the V-shaped rod 51 to rotate into the first square groove 111 during the sliding process and stretches the third spring 52. Since the V-shaped rod 51 rotates towards the first square groove 111, one end of it enters the first square groove 111 and makes the V-shaped rod 51 unable to rotate. At this time, the other end of the V-shaped rod 51 blocks the second fixed block 421 from moving towards the middle, thereby separating the two fixed blocks 421. As the two middle fixed blocks 421 approach each other, the middle pipe contacts the cylinder 4212 and pushes the cylinder 4212 to slide into the circular groove 4211, thereby compressing the first spring 4213. The cylinders 4212 in the fixed block group 42 outline the shape of the pipe and completely surround the pipe. When the two fixed blocks 421 contact, the limit block 445 snaps into the third square groove 442 and pushes the two side balls 443 during the process of entering the third square groove 442. The balls 443 compress the second spring 444, and as the limit block 445 gradually advances, the balls 443 slide to the arc-shaped depressions on both sides of the middle of the limit block 445, fit with the middle of the limit block 445 through the thrust of the second spring 444, and lock the limit block 445, so that the two fixed blocks 421 are clamped to each other;

[0039] As Figures 1-5As shown, simultaneously, driven by the electromagnetic slide rail 41, the two fixed blocks 421 slide to the position of the first arc-shaped groove 411. During the downward sliding process, several teeth 43 engage with the gear 35. After all three fixed block groups 42 are successfully combined, the motor 31 is started to drive the first rotating shaft 32 to rotate. The first rotating shaft 32 drives the first belt 321 to slide on the second rotating shaft 33, thereby driving the second rotating shaft 33 to rotate. The second rotating shaft 33 drives the third rotating shaft 34 to rotate through the second belt 322. The gears 35 on the first rotating shaft 32, the second rotating shaft 33, and the third rotating shaft 34 engage with the teeth 43 on the three fixed block groups 42. The rotation of the gear 35 drives the fixed block group 42 to rotate and cut the pipe. Since the pipe contacts the roller 4215 on the cylinder 4212, when the conveying mechanism 7 pushes the pipe in the direction of the laser generator 2, the pipe drives the roller 4215 to rotate, facilitating the movement of the pipe, enabling the pipe to move smoothly under the push of the conveying mechanism 7, ensuring the stability of the cutting process and improving the cutting efficiency.

[0040] As Figures 1-7 shown, it should be noted that: the storage box 57 is filled with pipes to be cut. After the first wave of pipes is cut, the fixed blocks 421 in the fixed block group 42 separate. When the fixed blocks 421 separate and slide to both sides, one end of the V-shaped rod 51 loses the restriction of the arc-shaped block 44, and the third spring 52 pulls the other end of the V-shaped rod 51 to rotate away from the end of the first square groove 111. During the rotation of the V-shaped rod 51, it drives the first rotating block 54 to rotate, and the pipe falls into the third arc-shaped groove 561 on the top of the first rotating block 54. When the V-shaped rod 51 drives the first rotating block 54 to rotate, the pipe falls into the fourth arc-shaped groove 6 and is located on top of the conveying mechanism 7. Moreover, each rotation of the first rotating block 54 can only drive one pipe to fall downward. At the same time, when the first rotating block 54 rotates, it drives the fixed rod 563 to rotate, the fixed rod 563 drives the third belt 564 to rotate, the third belt 564 drives another fixed rod 563 to rotate, and further drives the second rotating block 56 to rotate, thereby realizing the sequential and orderly falling of the pipes in each storage box 57, avoiding the accumulation and interference between the pipes.

[0041] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A plate-tube integrated laser cutting machine with automatic adjustment tooling, comprising: A workbench (1), characterized in that: a top cover (11) is provided on the top of the workbench (1), a square groove (111) is provided on the top cover (11), a laser generator (2) is provided on one side of the top cover (11), a driving component (3) is provided inside the workbench (1), an adaptive component (4) is provided on the workbench (1), an automatic feeding component (5) is provided on the top cover (11), an arc groove (6) is provided on one side of the adaptive component (4) on the workbench (1), and a conveying mechanism (7) is provided on the workbench (1) at the bottom of the arc groove (6); The driving assembly (3) comprises a motor (31) fixedly connected to the inner wall of the workbench (1); the output end of the motor (31) is fixedly connected to a first rotating shaft (32); a second rotating shaft (33) and a third rotating shaft (34) are sequentially arranged on one side of the first rotating shaft (32) on the workbench (1); and a gear (35) is fixedly connected to the first rotating shaft (32), the second rotating shaft (33) and the third rotating shaft (34) on the side away from the workbench (1); The adaptive component (4) comprises an electromagnetic slide rail (41) fixedly connected to the bottom of the workbench (1); a fixed block group (42) is slidably connected to the electromagnetic slide rail (41); three groups of the fixed block groups (42) are provided, each group of the fixed block groups (42) comprises two fixed blocks (421); the fixed blocks (421) are semicircular; the arc surfaces of the two fixed blocks (421) are fixedly connected with latch teeth (43); a plurality of latch teeth (43) are provided; an arc block (44) is fixedly connected to one side of the latch teeth (43) on the fixed block (421); the arc block (44) is inside the electromagnetic slide rail (41).

2. A plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 1, characterized in that: The rotating shaft 1 (32) and the rotating shaft 2 (33) are connected via a belt 1 (321), and the rotating shaft 2 (33) and the rotating shaft 3 (34) are connected via a belt 2 (322).

3. A plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 1, characterized in that: An arc-shaped groove (411) is provided on the electromagnetic slide rail (41) at a position opposite to the gear (35).

4. A plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 1, characterized in that: A circular groove (4211) is provided on one side opposite to the two fixed blocks (421), and the circular groove (4211) is provided with a plurality of grooves. A cylinder (4212) is slidably connected in the circular groove (4211), a spring 1 (4213) is fixedly connected between the cylinder (4212) and the circular groove (4211), and an arc groove 2 (4214) is provided at one end of the cylinder (4212) away from the spring 1 (4213), and a roller (4215) is rotatably connected in the arc groove 2 (4214).

5. The plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 1, characterized in that: Two ends of one of the arc-shaped blocks (44) in each group of the fixed block groups (42) are provided with square grooves (441), two sides of the square grooves (441) are provided with square grooves (442), a round ball (443) is slidably connected in the square grooves (442), a spring (444) is fixedly connected between the round ball (443) and the square grooves (442), and two ends of another arc-shaped block (44) in the fixed block group (42) are fixedly connected with limit blocks (445), and arc-shaped depressions are arranged on both sides of the middle of the limit blocks (445).

6. The plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 1, characterized in that: The automatic feeding assembly (5) comprises a V-shaped rod (51) connected to the square groove one (111) via a rotating shaft, the rotating shaft passes through the V-shaped rod (51), a spring three (52) is fixedly connected between the V-shaped rod (51) and the top cover (11), a through groove one (53) is provided on the top cover (11) at one side of the V-shaped rod (51), an end of the V-shaped rod (51) close to the through groove one (53) is connected to a rotating block one (54) via the rotating shaft, the rotating block one (54) is rotatably connected to the through groove one (53), a through groove two (55) is provided between the two through grooves one (53) on the top cover (11), a rotating block two (56) is rotatably connected in the through groove two (55), and a material storage box (57) is fixedly connected to the top of the through groove one (53) and the through groove two (55) on the top cover (11).

7. A plate-tube integrated laser cutting machine with automatic adjustment tooling as claimed in claim 6, characterized in that: One side of the rotating block 1 (54) and the rotating block 2 (56) is provided with an arc groove 3 (561), and one end of the through groove 1 (53) and the through groove 2 (55) away from the V-shaped rod (51) is provided with a through groove 3 (562), and one end of the rotating block 1 (54) and the rotating block 2 (56) away from the V-shaped rod (51) is fixedly connected to a fixed rod (563), and the two fixed rods (563) are connected by a belt 3 (564).

Images