CN217665483U - Four-column hydraulic machine for machining automobile parts - Google Patents

Abstract

The utility model belongs to the technical field of automobile parts processing, especially, be a four-column hydraulic press is used in automobile parts processing, including frame, impact block and pneumatic cylinder, still include: the lower die base is fixedly provided with a mounting base on the bottom surface, and the top surface of the rack is provided with a mounting groove capable of accommodating the mounting base; the two groups of wafer type mounting assemblies are symmetrically mounted at the left end and the right end of the rack; a pneumatic blanking assembly; the utility model discloses a four post hydraulic presses are used in car parts processing has wafer formula installation component for the installation of cooperation mount pad realization die holder, under the prerequisite of guaranteeing the die holder installation stability, installation and dismantlement are all very convenient, conveniently change the die holder of different specifications according to different processing needs; have pneumatic unloading subassembly, can accomplish the unloading of back automatic realization blank at processing, the unloading is convenient, the unloading security is high to greatly improved the efficiency of processing, avoided the customer to complain, be favorable to improving the enterprise income.

Description

Four-column hydraulic machine for machining automobile parts

Technical Field

The utility model belongs to the technical field of the automobile parts processing, concretely relates to four post hydraulic presses are used in automobile parts processing.

Background

Automobile parts are units forming the whole automobile and a product serving the automobile, the automobile parts are various, the consumption of the automobile is more and more along with the improvement of the living standard of people, the market of the automobile parts is larger and larger, and automobile part manufacturers are developed rapidly in recent years.

The four-column hydraulic press is a mechanical device for processing products such as metal, plastic, rubber, wood, powder and the like by utilizing the static pressure of hydraulic oil conveyed by an oil pump, and is also an important device for processing automobile parts and is used for extrusion molding of specified automobile parts.

We find that traditional four post hydraulic presses when using, the unloading is very inconvenient after auto-parts extrusion, and traditional mode is artifical unloading, because the raw materials can produce very high heat because the stress action when receiving the extrusion, just can artifical unloading after needing to wait for the material cooling, and very trouble has greatly reduced the efficiency of production, still has certain potential safety hazard simultaneously.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a four-column hydraulic press is used in automobile parts processing has convenient to use, easily unloading and characteristics that production efficiency is high.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a four post hydraulic presses are used in automobile parts processing, includes frame, impact block and pneumatic cylinder the bottom surface four corners of frame is fixed with supporting leg, top surface four corners and is fixed with and runs through the direction stand that the impact block set up the top of direction stand is fixed with the roof-rack, the pneumatic cylinder is installed the roof-rack top surface, just the piston rod of pneumatic cylinder runs through behind the roof-rack with impact block fixed connection, four post hydraulic presses are used in automobile parts processing still include:

the lower die base is fixedly provided with a mounting base on the bottom surface, and the top surface of the rack is provided with a mounting groove capable of accommodating the mounting base;

the two groups of wafer type mounting assemblies are symmetrically mounted at the left end and the right end of the rack, each wafer type mounting assembly comprises a first horizontal cylinder and a flexible wafer type mounting assembly, the first horizontal cylinder is mounted on the rack, the flexible wafer type mounting assembly is mounted at the end part of a piston rod of the first horizontal cylinder and used for clamping the mounting seat towards the inner side, and a through hole capable of accommodating the flexible wafer type mounting assembly is formed in the side wall of the mounting groove;

the pneumatic blanking assembly is connected below the rack and comprises two ejector rods capable of moving in the vertical direction, and the top ends of the ejector rods penetrate through the rack, the mounting seat and the lower die seat.

As a preferred technical scheme of the utility model, pneumatic unloading subassembly still includes the mounting panel of two symmetric distributions, the sliding seat of two symmetric distributions, the upset connecting plate and No. two horizontal cylinder of two symmetric distributions, the mounting panel is fixed the supporting leg is inboard, two the sliding seat runs through corresponding mounting panel respectively the bottom mounting of ejector pin has the connecting block, the top of upset connecting plate with the connecting block is articulated, the bottom with the sliding seat is articulated, no. two horizontal cylinder is connected two between the sliding seat.

As an optimal technical scheme of the utility model, pneumatic unloading subassembly still includes a balance spring and No. two balance spring, two the distal end of sliding seat all is fixed with the limiting plate be fixed with on the mounting panel and run through the guide bar that the limiting plate set up, just is in the end fixing of guide bar has the spacing dish, a balance spring housing is established on the guide bar and be in the mounting panel with between the limiting plate, no. two balance spring housing are established on the guide bar and be in the limiting plate with between the spacing dish.

As a preferred technical scheme of the utility model, flexible butt clamp subassembly includes solid fixed splint, movable clamp plate, flexible post and expanding spring, gu fixed splint installs horizontal cylinder's tailpiece of the piston rod portion, four flexible post is the diagonal formula to be fixed gu fixed splint with between the movable clamp plate, the expanding spring cover is established on the flexible post.

As an optimized technical proposal of the utility model, a positioning block is fixed on the movable clamping plate, a locking hole for embedding the positioning block is arranged on the mounting seat.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a four post hydraulic presses are used in car parts processing has wafer formula installation component for the installation of cooperation mount pad realization die holder, under the prerequisite of guaranteeing the die holder installation stability, installation and dismantlement are all very convenient, conveniently change the die holder of different specifications according to different processing needs; have pneumatic unloading subassembly, can accomplish the unloading of back automatic realization blank at processing, the unloading is convenient, the unloading security is high to greatly improved the efficiency of processing, avoided the customer to complain, be favorable to improving the enterprise income.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a shaft side structure of the pneumatic blanking assembly of the present invention;

fig. 3 is a schematic axial side view of the wafer-type mounting assembly according to the present invention;

in the figure: 1. a frame; 2. an impact block; 3. a top frame; 4. a hydraulic cylinder; 5. a guide upright post; 6. a lower die holder; 7. a mounting seat; 8. mounting grooves; 9. a first horizontal cylinder; 10. a flexible butt clamp assembly; 11. a through hole; 12. a pneumatic blanking assembly; 13. supporting legs; 14. a locking hole; 15. a top rod; 16. connecting blocks; 17. mounting a plate; 18. a sliding seat; 19. turning over the connecting plate; 20. a second horizontal cylinder; 21. a limiting plate; 22. a guide bar; 23. a limiting disc; 24. a balance spring; 25. a second balance spring; 26. fixing the clamping plate; 27. a movable splint; 28. positioning blocks; 29. a telescopic column; 30. a telescoping spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a four post hydraulic presses are used in automobile parts processing, includes frame 1, impact block 2 and pneumatic cylinder 4, is fixed with supporting leg 13 in the bottom surface four corners of frame 1, and the top surface four corners is fixed with the direction stand 5 that runs through impact block 2 and set up, is fixed with roof-rack 3 on the top of direction stand 5, and pneumatic cylinder 4 installs at 3 top surfaces of roof-rack, and pneumatic cylinder 4's piston rod run through behind the roof-rack 3 with impact block 2 fixed connection, and four post hydraulic presses are used in automobile parts processing still include: the lower die holder 6 is provided with a mounting seat 7 fixed on the bottom surface of the lower die holder 6, and the top surface of the frame 1 is provided with a mounting groove 8 capable of accommodating the mounting seat 7; the two groups of wafer type mounting assemblies are symmetrically mounted at the left end and the right end of the rack 1 and comprise a first horizontal cylinder 9 and a flexible wafer type mounting assembly 10, the first horizontal cylinder 9 is mounted on the rack 1, the flexible wafer type mounting assembly 10 is mounted at the end part of a piston rod of the first horizontal cylinder 9 and used for clamping the mounting seat 7 towards the inner side, and a through hole 11 capable of accommodating the flexible wafer type mounting assembly 10 is formed in the side wall of the mounting groove 8; the pneumatic blanking assembly 12 is connected below the rack 1, the pneumatic blanking assembly 12 comprises two ejector rods 15 which can move in the vertical direction, the top ends of the ejector rods 15 penetrate through the rack 1, the mounting seat 7 and the lower die seat 6, when the pneumatic blanking assembly 12 is used, the lower die seat 6 with a proper specification is selected according to actual processing requirements, the mounting seat 7 is embedded into the mounting groove 8, the first horizontal cylinder 9 is started, the mounting seat 7 is clamped towards the inner side by utilizing the flexible opposite clamping assemblies 10 on the two sides, the mounting stability of the lower die seat 6 is guaranteed, automobile component raw materials to be processed are placed on the lower die seat 6, then the hydraulic cylinder 4 is started, a piston rod of the hydraulic cylinder 4 pushes the impact block 2 to move downwards, the impact block 2 is matched with the lower die seat 6 to achieve the raw materials of the automobile components, after the processing is finished, the hydraulic cylinder 4 drives the impact block 2 to move upwards to reset, the two ejector rods 15 are started to move upwards to eject the materials, and blanking is achieved; the utility model discloses a four-column hydraulic press, have the wafer formula installation component for cooperate mount pad 7 to realize the installation of die holder 6, under the prerequisite of guaranteeing that the installation of die holder 6 is stable, it is all very convenient to install and dismantle, the convenient die holder 6 of changing different specifications according to different processing needs; have pneumatic unloading subassembly 12, can accomplish the unloading of back automatic realization blank at processing, the unloading is convenient, the unloading security is high to greatly improved the efficiency of processing, avoided the customer to complain, be favorable to improving the enterprise income.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the pneumatic discharging assembly 12 further includes two symmetrically distributed mounting plates 17, two symmetrically distributed sliding seats 18, two symmetrically distributed turnover connecting plates 19 and two horizontal cylinders 20, the mounting plates 17 are fixed inside the supporting legs 13, the two sliding seats 18 respectively penetrate through the corresponding mounting plates 17, a connecting block 16 is fixed at the bottom end of the ejector rod 15, the top end of the turnover connecting plate 19 is hinged to the connecting block 16, the bottom end of the turnover connecting plate is hinged to the sliding seats 18, the two horizontal cylinders 20 are connected between the two sliding seats 18, the two horizontal cylinders 20 provide power for the two sliding seats 18 to move towards the inside or the outside, when the two sliding seats 18 move towards the inside, the two sliding seats 18 respectively drive the corresponding turnover connecting plates 19 to turn over and move, and the turnover connecting plate 19 pushes the ejector rod 15 to move upwards.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the pneumatic blanking assembly 12 further includes a first balance spring 24 and a second balance spring 25, the distal ends of the two sliding seats 18 are fixed with the limiting plates 21, the mounting plate 17 is fixed with the guide rod 22 penetrating through the limiting plates 21, the end of the guide rod 22 is fixed with the limiting disc 23, the first balance spring 24 is sleeved on the guide rod 22 and located between the mounting plate 17 and the limiting plate 21, the second balance spring 25 is sleeved on the guide rod 22 and located between the limiting plate 21 and the limiting disc 23, the limiting plate 21 limits the moving range of the two sliding seats 18, so as to ensure the safety of the operation of the device, when the two sliding seats 18 move, the two sliding seats 18 drive the corresponding limiting plates 21 to move respectively, and the first balance spring 24 and the second balance spring 25 stretch out and draw back, so as to improve the stability of the two sliding seats 18.

Specifically, as shown in fig. 1 and fig. 3, in this embodiment, the flexible butt clamp assembly 10 includes the fixed clamp plate 26, the movable clamp plate 27, the telescopic column 29 and the telescopic spring 30, the fixed clamp plate 26 is installed at the end of the piston rod of the horizontal cylinder 9, four telescopic columns 29 are fixed between the fixed clamp plate 26 and the movable clamp plate 27 in a diagonal manner, the telescopic spring 30 is sleeved on the telescopic column 29, the telescopic column 29 is a telescopic structure formed by sleeving two sections of hollow cylindrical members, under the elastic force fit of the telescopic spring 30, when the movable clamp plates 27 on two sides clamp the mounting seat 7, the telescopic column 29 and the telescopic spring 30 contract, on the premise of ensuring the stability of the mounting seat 7, the safety of the mounting seat 7 is also ensured.

Example 2

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a four post hydraulic presses are used in automobile parts processing, includes frame 1, impact block 2 and pneumatic cylinder 4, is fixed with supporting leg 13 in the bottom surface four corners of frame 1, the top surface four corners is fixed with the direction stand 5 that runs through impact block 2 and set up, is fixed with roof-rack 3 on the top of direction stand 5, pneumatic cylinder 4 installs at 3 top surfaces of roof-rack, and the piston rod of pneumatic cylinder 4 runs through behind the roof-rack 3 with impact block 2 fixed connection, four post hydraulic presses are used in automobile parts processing still include: the lower die holder 6 is provided with a mounting seat 7 fixed on the bottom surface of the lower die holder 6, and the top surface of the frame 1 is provided with a mounting groove 8 capable of accommodating the mounting seat 7; the clamping type mounting assemblies are symmetrically mounted at the left end and the right end of the rack 1, each clamping type mounting assembly comprises a first horizontal cylinder 9 and a flexible clamping assembly 10, the first horizontal cylinder 9 is mounted on the rack 1, the flexible clamping assembly 10 is mounted at the end part of a piston rod of the first horizontal cylinder 9 and used for clamping the mounting seat 7 towards the inner side, and a through hole 11 capable of accommodating the flexible clamping assembly 10 is formed in the side wall of the mounting groove 8; the pneumatic blanking assembly 12 is connected below the rack 1, the pneumatic blanking assembly 12 comprises two ejector rods 15 which can move in the vertical direction, the top ends of the ejector rods 15 penetrate through the rack 1, the mounting seat 7 and the lower die holder 6, when the pneumatic blanking assembly 12 is used, the lower die holder 6 with a proper specification is selected according to actual processing requirements, the mounting seat 7 is embedded into the mounting groove 8, the first horizontal cylinder 9 is started, the mounting seat 7 is clamped towards the inner side by utilizing the flexible opposite clamping assemblies 10 on the two sides, the mounting stability of the lower die holder 6 is guaranteed, automobile component raw materials to be processed are placed on the lower die holder 6, then the hydraulic cylinder 4 is started, a piston rod of the hydraulic cylinder 4 pushes the impact block 2 to move downwards, the impact block 2 is matched with the lower die holder 6 to realize punch forming of the automobile component raw materials, after the processing is finished, the hydraulic cylinder 4 drives the impact block 2 to move upwards to reset, the two ejector rods 15 are started to move upwards to eject the materials, and blanking is realized; the utility model discloses a four-column hydraulic press, have the wafer formula installation component for cooperate mount pad 7 to realize the installation of die holder 6, under the prerequisite of guaranteeing that the installation of die holder 6 is stable, it is all very convenient to install and dismantle, the convenient die holder 6 of changing different specifications according to different processing needs; have pneumatic unloading subassembly 12, can accomplish the unloading of back automatic realization blank at processing, the unloading is convenient, the unloading security is high to greatly improved the efficiency of processing, avoided the customer to complain, be favorable to improving the enterprise income.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the pneumatic discharging assembly 12 further includes two symmetrically distributed mounting plates 17, two symmetrically distributed sliding seats 18, two symmetrically distributed turnover connecting plates 19, and a second horizontal cylinder 20, the mounting plates 17 are fixed inside the supporting leg 13, the two sliding seats 18 respectively penetrate through the corresponding mounting plates 17, a connecting block 16 is fixed at the bottom end of the ejector rod 15, the top end of the turnover connecting plate 19 is hinged to the connecting block 16, the bottom end of the turnover connecting plate is hinged to the sliding seats 18, the second horizontal cylinder 20 is connected between the two sliding seats 18, the second horizontal cylinder 20 provides power for the two sliding seats 18 to move towards the inside or the outside, when the two sliding seats 18 move towards the inside, the two sliding seats 18 respectively drive the corresponding turnover connecting plates 19 to turn over and move, and the turnover connecting plate 19 pushes the ejector rod 15 to move upwards.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the pneumatic discharging assembly 12 further includes a first balance spring 24 and a second balance spring 25, the distal ends of the two sliding seats 18 are fixed with the limiting plates 21, the mounting plate 17 is fixed with the guide rod 22 penetrating through the limiting plates 21, the end of the guide rod 22 is fixed with the limiting disc 23, the first balance spring 24 is sleeved on the guide rod 22 and located between the mounting plate 17 and the limiting plate 21, the second balance spring 25 is sleeved on the guide rod 22 and located between the limiting plate 21 and the limiting disc 23, the limiting plate 21 limits the moving range of the two sliding seats 18, so as to ensure the safety of the operation of the device, when the two sliding seats 18 move, the two sliding seats 18 respectively drive the corresponding limiting plates 21 to move, and the first balance spring 24 and the second balance spring 25 stretch, so as to improve the stability of the two sliding seats 18.

Specifically, as shown in fig. 1 and fig. 3, in this embodiment, the flexible butt clamp assembly 10 includes the fixed clamp plate 26, the movable clamp plate 27, the telescopic column 29 and the telescopic spring 30, the fixed clamp plate 26 is installed at the end of the piston rod of the horizontal cylinder 9, four telescopic columns 29 are fixed between the fixed clamp plate 26 and the movable clamp plate 27 in a diagonal manner, the telescopic spring 30 is sleeved on the telescopic column 29, the telescopic column 29 is a telescopic structure formed by sleeving two sections of hollow cylindrical members, under the elastic force fit of the telescopic spring 30, when the movable clamp plates 27 on two sides clamp the mounting seat 7, the telescopic column 29 and the telescopic spring 30 contract, on the premise of ensuring the stability of the mounting seat 7, the safety of the mounting seat 7 is also ensured.

Specifically, according to fig. 1 and fig. 3, in this embodiment, the positioning block 28 is fixed on the movable clamp plate 27, the mounting seat 7 is provided with the locking hole 14 for the positioning block 28 to be embedded into, and when the movable clamp plates 27 on both sides clamp the mounting seat 7, the positioning block 28 is embedded into the locking hole 14, so that the stability of the mounting seat 7 is further improved, and the mounting seat 7 is prevented from sliding.

The utility model discloses a theory of operation and use flow: the utility model discloses a four-column hydraulic press, when using, according to actual processing needs, select the die holder 6 of suitable specification, imbed the mount pad 7 in the mounting groove 8, start horizontal cylinder 9 No. one, utilize the flexible butt clamp subassembly 10 of both sides towards inboard centre gripping mount pad 7, guarantee the stability of die holder 6 installation, the automobile parts raw and other materials that wait to process are placed on the die holder 6, later start hydraulic cylinder 4, the piston rod of hydraulic cylinder 4 promotes impact block 2 and moves down, impact block 2 cooperates die holder 6 to realize the stamping forming of automobile parts raw and other materials;

after the processing is finished, the hydraulic cylinder 4 drives the impact block 2 to move upwards for resetting, and the two ejector rods 15 are started to move upwards to eject materials, so that blanking is realized, the four-column hydraulic machine of the utility model is provided with the wafer type mounting assembly which is used for matching with the mounting seat 7 to realize the mounting of the lower die holder 6, and under the premise of ensuring the stable mounting of the lower die holder 6, the mounting and dismounting are very convenient, so that the lower die holders 6 with different specifications can be conveniently replaced according to different processing requirements; have pneumatic unloading subassembly 12, can accomplish the unloading of back automatic realization blank at processing, the unloading is convenient, the unloading security is high to greatly improved the efficiency of processing, avoided the customer to complain, be favorable to improving the enterprise income.

In all examples shown and described herein, any particular value should be construed as exemplary only and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be connected through an intermediate medium.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a four post hydraulic presses are used in automobile parts processing, includes frame (1), impact piece (2) and pneumatic cylinder (4) the bottom surface four corners of frame (1) is fixed with supporting leg (13), top surface four corners and is fixed with and runs through guide post (5) that impact piece (2) set up the top of guide post (5) is fixed with roof-rack (3), install pneumatic cylinder (4) roof-rack (3) top surface, just the piston rod of pneumatic cylinder (4) runs through behind roof-rack (3) with impact piece (2) fixed connection, its characterized in that: the four-column hydraulic press for machining the automobile parts further comprises:

the lower die holder (6), the bottom surface of the lower die holder (6) is fixed with a mounting seat (7), and the top surface of the rack (1) is provided with a mounting groove (8) capable of accommodating the mounting seat (7);

the two groups of wafer type mounting assemblies are symmetrically mounted at the left end and the right end of the rack (1) and comprise a first horizontal cylinder (9) and a flexible wafer type mounting assembly (10), the first horizontal cylinder (9) is mounted on the rack (1), the flexible wafer type mounting assembly (10) is mounted at the end part of a piston rod of the first horizontal cylinder (9) and used for clamping the mounting seat (7) towards the inner side, and a through hole (11) capable of accommodating the flexible wafer type mounting assembly (10) is formed in the side wall of the mounting groove (8);

pneumatic unloading subassembly (12), pneumatic unloading subassembly (12) are connected the below of frame (1), just pneumatic unloading subassembly (12) include two ejector pins (15) that set up to removing for following vertical direction, just the top of ejector pin (15) is run through frame (1) mount pad (7) and die holder (6).

2. The four-column hydraulic machine for machining automobile parts according to claim 1, wherein: pneumatic unloading subassembly (12) still include mounting panel (17), the sliding seat (18) of two symmetric distributions, the upset connecting plate (19) and No. two horizontal cylinder (20) of two symmetric distributions, mounting panel (17) are fixed supporting leg (13) are inboard, two sliding seat (18) run through corresponding mounting panel (17) respectively the bottom mounting of ejector pin (15) has connecting block (16), the top of upset connecting plate (19) with connecting block (16) are articulated, the bottom with sliding seat (18) are articulated, no. two horizontal cylinder (20) are connected two between sliding seat (18).

3. The four-column hydraulic machine for machining automobile parts according to claim 2, wherein: pneumatic unloading subassembly (12) still includes a balance spring (24) and No. two balance spring (25), two the distal end of sliding seat (18) all is fixed with limiting plate (21) be fixed with on mounting panel (17) and run through guide bar (22) that limiting plate (21) set up, and be in the end fixing of guide bar (22) has spacing dish (23), a balance spring (24) cover is established on guide bar (22) and be in mounting panel (17) with between limiting plate (21), no. two balance spring (25) cover is established on guide bar (22) and be in limiting plate (21) with between spacing dish (23).

4. The four-column hydraulic machine for machining automobile parts according to claim 1, wherein: flexible butt clamp subassembly (10) is including solid fixed splint (26), activity splint (27), flexible post (29) and expanding spring (30), gu fixed splint (26) are installed the piston rod tip of a horizontal cylinder (9), four flexible post (29) are the diagonal formula to be fixed gu fixed splint (26) with between the activity splint (27), expanding spring (30) cover is established on flexible post (29).

5. The four-column hydraulic machine for machining automobile parts according to claim 4, wherein: a positioning block (28) is fixed on the movable clamping plate (27), and a locking hole (14) for embedding the positioning block (28) is formed in the mounting seat (7).

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