CN218169137U - Cast iron plate cutting equipment convenient to propelling movement - Google Patents

Abstract

The utility model belongs to the technical field of cast iron plate processing, specifically be a cast iron plate cutting equipment convenient to propelling movement. The utility model discloses a cast iron plate cutting equipment convenient to propelling movement, which comprises a frame, the fixed setting in ground of frame symmetry, two it is provided with a plurality of cylinder to rotate between the frame, leave great gap between the cylinder, the lower fixed surface of frame is provided with a plurality of U-shaped support, the upper surface symmetry of frame is provided with the conveying subassembly, two be provided with cutting assembly between the conveying subassembly, the frame surface department symmetry of conveying subassembly both sides is provided with the propelling movement subassembly. The utility model provides a can automatic propelling movement cast iron plate to the simple cast iron plate cutting equipment of mode.

Description

Cast iron plate cutting equipment convenient to propelling movement

Technical Field

The utility model belongs to the technical field of the cast iron plate cutting, especially, relate to a cast iron plate cutting equipment convenient to propelling movement.

Background

When the cast iron plate is machined, the cast iron plate needs to be subjected to laser cutting, the existing laser cutting equipment is low in working efficiency, certain defects exist in the existing pushing clamp assembly when the existing pushing clamp assembly is used, the existing pushing structure is simple, manual auxiliary operation needs to be used, the efficiency of the cutting operation of the cast iron plate is reduced, the existing pushing assembly is poor in stability, the cast iron plate is prone to slipping, dangers are generated in the subsequent cutting process, the cast iron plate cannot be moved automatically after being cut, the efficiency of the cutting operation is also reduced, the mode possibly has great potential safety hazards, when the cast iron plate is subjected to laser cutting, the cast iron plate cannot be moved by using a traditional conveying belt, and if the cast iron plate is used, the heat generated when the cast iron plate is cut by laser can cause irreversible damage to the surface of the conveying belt.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide an automatic propelling movement cast iron plate to cast iron plate cutting equipment that the mode is simple.

The utility model discloses a realize above-mentioned purpose, provide following technical scheme: the cast iron plate cutting equipment convenient to push comprises racks, wherein the racks are symmetrically and fixedly arranged on the ground, a plurality of cylinders are rotatably arranged between the two racks, gaps are reserved between the cylinders, a plurality of U-shaped supports are fixedly arranged on the lower surfaces of the racks, conveying assemblies are symmetrically arranged on the upper surfaces of the racks, cutting assemblies are arranged between the two conveying assemblies, and pushing assemblies are symmetrically arranged on the surfaces of the racks on the two sides of the conveying assemblies.

Further, the pushing assembly comprises a motor III, a connecting rod II and a rotating disc, the motor III is fixedly arranged in the U-shaped support, an output shaft of the motor III penetrates through the upper surface of the rack and is fixedly connected with a rotating shaft II, the rotating shaft II is in rotating fit with the rack, a clamping block III is symmetrically and fixedly arranged at the upper end of the rotating shaft II, the connecting rod II is fixedly arranged on the upper surface of the rotating disc, a clamping groove is formed in the lower end surface of the rotating disc, two sides of the rotating disc are symmetrically arranged to be planes, connecting shafts I are symmetrically and fixedly arranged at two ends of the rotating disc, a T-shaped stepped connecting shaft II is sleeved outside the connecting shaft I, a cylindrical groove is formed in the T-shaped stepped connecting shaft II, and the connecting shaft I is arranged in the cylindrical groove in a sliding manner, the outer end of the T-shaped stepped connecting shaft II is hinged to a support, a pushing block is fixedly arranged on the outer end face of the support, a first connecting shaft is sleeved with a first spring, two ends of the first spring are fixedly matched with the rotating disc and the T-shaped stepped connecting shaft II respectively, a retainer ring is fixedly arranged on the surface of a short shaft part of the T-shaped stepped connecting shaft II, the T-shaped stepped connecting shaft is sleeved with a second spring, two ends of the second spring are fixedly matched with the rotating disc and the retainer ring respectively, the first connecting shaft sleeved with the second spring is fixedly arranged at the central position of one end of the rotating disc, and the T-shaped stepped connecting shaft II and the support which are connected with the first connecting shaft are also located at the central position of the pushing block.

Further, the conveying assembly comprises a first motor, two frames and a linear switch, the first motor is fixedly arranged inside the U-shaped support, a lead screw is arranged in the frames in a rotating mode, a first through groove is formed in the lower end of each frame, an output shaft of the first motor penetrates through the upper surface of the frame and is fixedly matched with the lower end of the lead screw, a first square slider and a second square slider are arranged on the surface of the lead screw in a threaded mode, the second square slider is arranged below the first square slider, one end of a second connecting rod is fixedly matched with the second square slider, the lower end of the first lead screw penetrates through the upper surface of the frame and is fixedly connected with a first rotating shaft, the first rotating shaft is rotatably arranged in the U-shaped support, a second rotating wheel is fixedly arranged on the surface of the first rotating shaft, a first rotating wheel is fixedly arranged on the surface of the output shaft of the first motor, a conveying belt is arranged on the surface of the first rotating wheel in a sliding mode, the conveying belt is connected with the first rotating wheel and the second rotating wheel, and the linear switch is arranged on the upper surface of the frame.

Further, the cutting assembly comprises a cross beam rod, the two ends of the cross beam rod are fixedly matched with the outer side faces of two square sliding blocks I, a T-shaped through groove II is formed in the surface of the cross beam rod, a rack is fixedly arranged on the upper side face of the T-shaped through groove II, a first sliding groove is symmetrically formed in the two side faces above the cross beam rod, a second sliding groove is symmetrically formed in the two side faces below the cross beam rod, two groups of first connecting rods are symmetrically and fixedly arranged on the two side faces of the cross beam rod between the first sliding groove and the second sliding groove, an electric telescopic shaft is fixedly arranged on the lower end face of the first connecting rod, a pressing block is fixedly arranged on the lower end face of the electric telescopic shaft, a first clamping block is arranged in the first sliding groove in a sliding mode, a motor frame is fixedly arranged on the upper end face of the first clamping block, a second motor is fixedly arranged in the motor frame, an output shaft of the second motor penetrates through the surface of the first clamping block and is fixedly connected with a connecting shaft, a gear is fixedly arranged on the surface of the connecting shaft, the gear is meshed with the gear, a second clamping block is slidably arranged in the sliding groove, and the inner surface of the second clamping block is rotatably matched with a laser cutting assembly.

In summary, compared with the prior art, the low-cost knob device provided by the invention has the following beneficial effects:

1. the utility model discloses a rotating disc and three of axis of rotation of three output shaft terminal surfaces of motor pass through three joints of fixture block, drive the rotating disc and rotate, then can drive the propelling movement piece of rotating disc both sides and carry out the propelling movement to the cast iron plate, when the two compression springs of T shape ladder connecting shaft that lie in the rotating disc side reach the limit, the retaining ring on next door can continue to compress spring two, until the propelling movement piece can be parallel with the side of cast iron plate, the propelling movement piece of both sides is extruded and is pushed forward the both sides face of cast iron plate simultaneously at this moment, can replace the manual work to go to carry out this kind of dangerous work through simple mechanical structure like this, the potential safety hazard has been greatly reduced;

2. the conveying mode of the utility model adopts the way that the cast iron plate can be pushed and displaced by the pushing block through the rotating matching of the plurality of cylinders and the frame, and a larger gap is arranged between the cylinders, so that when the pushing of the cast iron plate is not influenced, the gap can prevent laser from damaging the surface of the cylinder when the cast iron plate is subjected to laser cutting;

drawings

Fig. 1 is an isometric view of the present invention;

FIG. 2 is a schematic view of the present invention;

FIG. 3 is a schematic view of the structure of the rotating disc of the present invention;

fig. 4 is a cross-sectional view of the rotating disk of the present invention;

FIG. 5 is a first schematic structural view of the cutting assembly of the present invention;

fig. 6 is a first cross-sectional view of the present invention;

fig. 7 is a second cross-sectional view of the present invention;

fig. 8 is a detailed view of the cutting assembly of the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the figure in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

Referring to fig. 1, a cast iron plate cutting equipment convenient to propelling movement, which comprises a frame 1, frame 1 symmetry is fixed to be set up on ground, it is provided with a plurality of cylinder 11 to rotate between two frames 1, cylinder 11 is used for supporting the cast iron plate and makes the cast iron plate be convenient for the propelling movement, leave the gap between the cylinder 11, can guarantee can not harm the cylinder 11 surface when carrying out laser cutting to the cast iron plate, the lower fixed surface of frame 1 is provided with a plurality of U-shaped support 12, the upper surface symmetry of frame 1 is provided with transport assembly 2, be used for transporting laser cutting part, be provided with cutting assembly 3 between two transport assemblies 2, the frame 1 surface department symmetry of transport assembly 2 both sides is provided with propelling movement subassembly 4.

Referring to fig. 6, the conveying assembly 2 includes a first motor 21, two frames 22, and a linear switch 26, the first motor 21 is fixedly disposed inside the U-shaped bracket 12, a lead screw 23 is rotatably disposed in the frame 22, a first through groove 27 is formed in a lower end of the frame 22, components in the pushing assembly 4 can conveniently pass through the first through groove, and the pushing assembly can be driven by the lead screw 23, an output shaft of the first motor 21 penetrates through an upper surface of the rack 1 and is fixedly matched with a lower end of the lead screw 23, a first square slider 24 and a second square slider 25 are disposed on a surface of the lead screw 23 in a threaded manner, the two sliders are configured into a square shape and can better adhere to an inner surface of the frame to slide, the second square slider 25 is disposed below the first square slider 24, a lower end of the lead screw 23 penetrates through an upper surface of the rack 1 and is fixedly connected with a first rotating shaft 232, the first rotating shaft 232 is rotatably disposed in the U-shaped bracket 12, a second rotating wheel 231 is fixedly disposed on a surface of the first rotating shaft 232, a surface of the first rotating wheel 211 is fixedly disposed on an output shaft of the first motor 21, a first rotating wheel 211 is slidably disposed on a surface of the first rotating wheel 211, the conveying belt 212 is connected with the rotating wheel 211 and the rotating wheel 231, the rotating wheel 26 is disposed in the frame 22, and is fixedly disposed on a surface of the rack 1.

Referring to fig. 5, the cutting assembly 3 includes a beam rod 31 as a main supporting component in the cutting assembly 3, two ends of the beam rod 31 are fixedly engaged with outer side surfaces of two square sliders 24, a T-shaped through slot two 311 is formed on a surface of the beam rod 31, a rack 314 is fixedly disposed on an upper side surface of the T-shaped through slot two 311, two side surfaces of an upper side of the beam rod 31 are symmetrically formed with a first sliding slot 312, two side surfaces of a lower side of the beam rod 31 are symmetrically formed with a second sliding slot 313, two groups of first connecting rods 35 are symmetrically and fixedly disposed on two side surfaces of the beam rod 31 between the first sliding slot 312 and the second sliding slot 313, a lower surface of an outer end of the first connecting rod 35 is fixedly provided with an electric telescopic shaft 36, a pressing block 37 is fixedly disposed on a lower end surface of the electric telescopic shaft 36, and the electric telescopic shaft 36 can drive the pressing block 37 to achieve up-down position limitation on a cast iron plate after a first movement, so that the cast iron plate does not greatly shake during a pushing movement, and can achieve position fixation on the cast plate after a second movement so that the cast plate can be stably cut.

Referring to fig. 8, a first fixture block 33 is slidably disposed in the first chute 312, a motor frame 331 is fixedly disposed on an upper end surface of the first fixture block 33, a second motor 332 is fixedly disposed in the motor frame 331, an output shaft of the second motor 332 penetrates through a surface of the first fixture block 33 and is fixedly connected with a connecting shaft 333, a gear 334 is fixedly disposed on a surface of the connecting shaft 333 and is meshed with the rack 314, stable proceeding of a subsequent cutting process can be guaranteed through meshing of the gear 334 and the rack 314, movement control of the position is accurate, a second fixture block 32 is slidably disposed in the second chute 313, a lower end of the connecting shaft 333 is in rotating fit with an inner surface of the second fixture block 32, and a laser cutting part 34 is fixedly disposed on a lower end surface of the second fixture block 32.

Referring to fig. 2, the pushing assembly 4 includes a third motor 41, a second connecting rod 45 and a rotating disc 44, the third motor 41 is fixedly disposed in the U-shaped bracket 12, an output shaft of the third motor 41 penetrates through the upper surface of the frame 1 and is fixedly connected with a second rotating shaft 42, the second rotating shaft 42 is in rotating fit with the frame 1, the third clamping block 43 is symmetrically and fixedly disposed at the upper end of the second rotating shaft 42, the second connecting rod 45 is fixedly disposed on the upper surface of the rotating disc 44, and one end of the second connecting rod 45 is in fixed fit with the second square sliding block 25.

Referring to fig. 3-4, a slot 441 is formed on a lower end surface of the rotating disc 44, the rotating disc 44 can be in snap fit with a third latch 43 on a surface of a second rotating shaft 42 through the slot 441, so that the second rotating shaft 42 can drive the rotating disc 44 to rotate, two sides of the rotating disc 44 are symmetrically arranged into a plane, a first connecting shaft 442 is symmetrically and fixedly arranged on two side planes of the rotating disc 44, a T-shaped stepped connecting shaft second 443 is sleeved outside the first connecting shaft 442, a cylindrical groove 4432 is formed on the T-shaped stepped connecting shaft second 443, the first connecting shaft 442 is slidably arranged in the cylindrical groove 4432, a support 444 is hinged at an outer end of the T-shaped stepped connecting shaft second 443, a pushing block 445 is fixedly arranged on an outer end surface of the support 444, a first spring 446 is sleeved outside the first connecting shaft 442, the first spring 446 can perform elastic restoration on the T-shaped stepped connecting shaft second 443 and can limit a sliding distance of the T-shaped stepped connecting shaft second 443, two ends of the first spring 446 are fixedly matched with the rotating disc 44 and the second T-shaped stepped connecting shaft 443 respectively, a retainer ring 4431 is fixedly arranged on the surface of a short shaft part of the second T-shaped stepped connecting shaft 443, a second spring 447 is sleeved outside the second T-shaped stepped connecting shaft 443, two ends of the second spring 447 are fixedly matched with the rotating disc 44 and the retainer ring 4431 respectively, the size of the second spring 447 is obviously larger than that of the first spring 446, the second spring 447 has a larger elastic modulus, the initial positions of the first spring 446 and the second spring 447 can just enable the pushing block 445 and the cast iron plate to be kept in a parallel state, the first connecting shaft 442 sleeved with the second spring 447 is fixedly arranged at the central position of one end of the rotating disc 44, and the second T-shaped stepped connecting shaft 443 and the support 444 which are connected with the first spring 442 are also located at the central position of the pushing block 445.

Principle of operation

Putting a cast iron plate on the surface of a cylinder 11, enabling the side surface of the cast iron plate to be parallel to the position of a pushing block 445, starting a motor I21 to drive a rotating wheel I211 and a rotating wheel II 231 to rotate through a conveyor belt 212, then simultaneously rotating lead screws 23 on two sides, further driving a beam rod 31 to descend through two square sliding blocks I24, simultaneously driving a square sliding block II 25 to descend through the rotation of the lead screws 23, when the square sliding blocks II 25 touch a linear switch 26, stopping driving the motor I21, driving the beam rod 31 to move to a proper cutting position through the square sliding blocks I24, driving a pressing block 37 on the lower end face of a connecting rod I35 on two sides of the beam rod 31 to move towards the cast iron plate, stopping moving when the pressing block is moved to be in contact with the cast iron plate, and limiting the space in the vertical direction of the pressing block 37 when the cast iron plate horizontally moves so that the cast iron plate cannot greatly shake;

further, when the second square slider 25 stops moving, the second connecting rods 45 on both sides can drive the rotating disc 44 and the second rotating shaft 42 to form clamping fit through the third clamping blocks 43 and the clamping grooves 441, and at the moment, when the rotating disc 44 descends, the pushing blocks 445 on both sides are parallel to the side surfaces of the cast iron plate, so that the cast iron plate cannot be touched during descending, then the third motor 41 is started to drive the second rotating shaft 42 to rotate, at the moment, the driving directions of the two sets of motors three 41 below the two racks 1 are opposite, and the driving directions of the motors three 41 on the same side are the same;

furthermore, the rotating shaft II 42 drives the rotating disc 44 to rotate, then the two T-shaped stepped connecting shafts II 443 slide on the surface of the first connecting shaft 442, and the T-shaped stepped connecting shafts II 443 positioned on the central line of the side surface of the rotating disc 44 extrude the first spring 446, when the compression spring 446 of the T-shaped stepped connecting shaft II 443 reaches the limit, the retainer rings 4431 on the surfaces of the adjacent T-shaped stepped connecting shafts II 443 continuously compress the second springs 447 until the pushing blocks 445 can be parallel to the side surface of the cast iron plate, and at this time, the pushing blocks 445 on the two sides simultaneously extrude and push the two side surfaces of the cast iron plate forwards until the cast iron plate is pushed to a proper cutting position;

furthermore, the electric telescopic shaft 36 drives the lower pressing block 37 to press and fix the iron casting plate to be cut better, then the second motor 332 is started to drive the connecting shaft 333 to rotate, then the connecting shaft 333 drives the gear 334 to move on the rack 314 and simultaneously drives the lower clamping block 32 to slide in the second sliding groove 313, and then the second clamping block 33 drives the lower laser cutting piece 34 to cut the iron casting plate.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims (7)

1. The cast iron plate cutting equipment convenient to push is characterized by comprising racks (1), wherein the racks (1) are symmetrically and fixedly arranged on the ground, a plurality of cylinders (11) are rotatably arranged between the two racks (1), gaps are reserved between the cylinders (11), a plurality of U-shaped supports (12) are fixedly arranged on the lower surfaces of the racks (1), conveying assemblies (2) are symmetrically arranged on the upper surfaces of the racks (1), cutting assemblies (3) are arranged between the two conveying assemblies (2), and pushing assemblies (4) are symmetrically arranged on the surfaces of the racks (1) on the two sides of the conveying assemblies (2).

2. The cast iron plate cutting device convenient to push as claimed in claim 1, characterized in that the pushing assembly (4) comprises a motor three (41), a connecting rod two (45) and a rotating disc (44), the motor three (41) is fixedly arranged in the U-shaped support (12), an output shaft of the motor three (41) penetrates through the upper surface of the rack (1) and is fixedly connected with a rotating shaft two (42), the rotating shaft two (42) is in rotating fit with the rack (1), the upper end of the rotating shaft two (42) is symmetrically and fixedly provided with clamping blocks three (43), and the connecting rod two (45) is fixedly arranged on the upper surface of the rotating disc (44).

3. The cast iron plate cutting device convenient to push as claimed in claim 2, wherein a clamping groove (441) is formed in a lower end face of the rotating disc (44), two sides of the rotating disc (44) are symmetrically arranged to be a plane, a first connecting shaft (442) is symmetrically and fixedly arranged at two ends of the rotating disc (44), a second T-shaped stepped connecting shaft (443) is sleeved outside the first connecting shaft (442), a cylindrical groove (4432) is formed in the second T-shaped stepped connecting shaft (443), the first connecting shaft (442) is slidably arranged in the cylindrical groove (4432), a support (444) is hinged to an outer end of the second T-shaped stepped connecting shaft (443), a pushing block (445) is fixedly arranged on an outer end face of the support (444), a first spring (446) is sleeved outside the first connecting shaft (442), two ends of the first stepped spring (446) are respectively and fixedly matched with the rotating disc (44) and the second T-shaped stepped connecting shaft (443), a retaining ring (447) is fixedly arranged on a surface of a short shaft portion of the second T-shaped connecting shaft (443), two stepped springs are respectively and two retaining rings (4431) are respectively and are respectively matched with the second rotating disc (4431) and two retaining rings (443).

4. A cutting apparatus for cast iron plates facilitating pushing as claimed in claim 3, wherein said coupling shaft one (442) externally covered with spring two (447) is fixedly installed at a central position of one end of the rotary disk (44), and the T-shaped stepped coupling shaft two (443) and the support (444) connected thereto are also located at a central position of the pushing block (445).

5. The easy-to-push cast iron plate cutting equipment as claimed in claim 2, wherein the conveying assembly (2) comprises a first motor (21), two frames (22) and a linear switch (26), the first motor (21) is fixedly arranged inside the U-shaped support (12), a lead screw (23) is rotatably arranged in each frame (22), a first through groove (27) is formed in the lower end of each frame (22), an output shaft of the first motor (21) penetrates through the upper surface of the frame (1) and is fixedly matched with the lower end of the lead screw (23), a first square slider (24) and a second square slider (25) are arranged on the surface of the lead screw (23) in a threaded manner, the second square slider (25) is arranged below the first square slider (24), one end of the connecting rod (45) is fixedly matched with the second square slider (25), a first rotating shaft (232) penetrates through the upper surface of the frame (1) at the lower end of the lead screw (23) and is fixedly connected with the first rotating shaft (232), the first rotating shaft (232) is rotatably arranged inside the U-shaped support (12), a first rotating wheel (232) is fixedly arranged on the surface of the fixed first rotating wheel (211), a second rotating wheel (211) and a rotating belt (211) is arranged on the rotating wheel (211), and a rotating wheel (211) is connected with the rotating wheel (211), and a rotating belt (211) and a rotating wheel (211) is arranged on the rotating wheel (211), and a rotating wheel (211) connected with the rotating belt (21) and a rotating wheel (211), and a rotating wheel (211) is arranged on the rotating wheel (211) ) The linear switch (26) is arranged in the frame (22) and is fixedly arranged on the upper surface of the machine frame (1).

6. The conveniently-pushed cast iron plate cutting equipment as claimed in claim 1, wherein the cutting assembly (3) comprises a cross beam rod (31), two ends of the cross beam rod (31) are fixedly matched with outer side surfaces of two square sliding blocks I (24), a T-shaped through groove II (311) is formed in the surface of the cross beam rod (31), a rack (314) is fixedly arranged on the upper side surface of the T-shaped through groove II (311), sliding grooves I (312) are symmetrically formed in two side surfaces above the cross beam rod (31), sliding grooves II (313) are symmetrically formed in two side surfaces below the cross beam rod (31), two groups of connecting rods I (35) are symmetrically and fixedly arranged on two side surfaces of the cross beam rod (31) between the sliding grooves I (312) and the sliding grooves II (313), an electric telescopic shaft (36) is fixedly arranged on the lower end surface of the connecting rods I (35), and a pressing block (37) is fixedly arranged on the lower end surface of the electric telescopic shaft (36).

7. The conveniently-pushed cast iron plate cutting device as claimed in claim 6, wherein a first clamping block (33) is slidably arranged in the first sliding groove (312), a motor frame (331) is fixedly arranged on the upper end face of the first clamping block (33), a second motor (332) is fixedly arranged in the motor frame (331), an output shaft of the second motor (332) penetrates through the surface of the first clamping block (33) and is fixedly connected with a connecting shaft (333), a gear (334) is fixedly arranged on the surface of the connecting shaft (333), the gear (334) is meshed with the rack (314), a second clamping block (32) is slidably arranged in the second sliding groove (313), the lower end of the connecting shaft (333) is in rotating fit with the inner surface of the second clamping block (32), and a laser cutting piece (34) is fixedly arranged on the lower end face of the second clamping block (32).

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