Novel clamp pushing traction device

By designing a new type of clamp pushing traction device, the traditional clamp library has solved the problems of large area, high noise and complex maintenance, and achieved more efficient and flexible clamp transmission and maintenance.

CN222892593UActive Publication Date: 2025-05-23SHANGHAI PHARMATECHS CO LTD
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Patent Information

Application Number
CN202421735036.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-22
Publication Date
2025-05-23
Estimated Expiration
2034-07-22

AI Technical Summary

Technical Problem

The traditional fixture warehouse covers a large area, is noisy and is complex in maintenance, making it difficult to meet the flexible switching needs of the welding and assembly production line of the Hyundai Automobile Factory.

Method used

A new type of clamp pushing and traction device is designed, including the main sliding table, sliding table car and fixture library. The ball screw drives the sliding table device to reduce the number of parts and simplify assembly, and automatic control is achieved through the PLC control module.

Benefits of technology

It effectively reduces the environmental noise during fixture transmission, shortens the floor space of the fixture library, simplifies the maintenance and maintenance process, and improves the flexibility and efficiency of the production line.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a novel fixture pushing and traction device, which belongs to the technical field of mechanical transmission, and aims to solve the problems that huge noise is generated in the transmission process of fixtures in a production line and subsequent maintenance is difficult due to a complicated assembly process, and the novel fixture pushing and traction device comprises a main sliding table and two fixture libraries symmetrically arranged on the left side and the right side of the main sliding table, the main sliding table is slidably connected with a sliding table trolley, the sliding table trolley comprises a supporting frame, the rear side of the supporting frame is provided with a first motor through a motor fixing frame, and the output end of the first motor is connected with a bevel gear. An eccentric shaft form is adopted by a guide wheel and an eccentric cylinder structure, so that the adjustment is more convenient; and a transmission structure of the driving sliding table device adopts a ball screw, so that the occupied space of a clamp library is effectively shortened, the number of parts formed by the device is reduced, and the subsequent maintenance complexity and maintenance difficulty are further reduced.
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Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical transmission, and in particular relates to a novel clamp pushing and pulling device. Background Art

[0002] At present, most of the welding production lines in automobile factories require flexible switching of production of multiple models, so a fixture library is used to store fixtures. However, traditional fixture libraries occupy a large space, which often causes insufficient space on site. Traditional fixture libraries use rack and pinion conveyors, which are noisy, have many parts, and complex assembly work, which is not conducive to later maintenance.

[0003] In view of the above problems, a new type of clamp pushing and traction device is urgently needed to be designed to reduce the environmental noise and subsequent maintenance costs during clamp transmission. Utility Model Content

[0004] The problem to be solved by the utility model is that huge noise is generated during the transmission of the production line fixture and subsequent maintenance is difficult due to the complex assembly process. A new fixture pushing and pulling device is proposed. To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A novel clamp pushing and traction device comprises: a main slide, a slide trolley and a clamp library, wherein the two clamp libraries are symmetrically arranged on the left and right sides of the main slide, the main slide is slidably connected with a slide trolley, the slide trolley comprises: a support frame, a first motor, a roller assembly, a clamp positioning device, a trolley positioning device, a gas-electric quick-plug unit and a sensing block, the support frame is slidably connected to the main slide, roller assemblies are installed at the front and back of the upper end of the support frame, clamp positioning devices are installed at the diagonal parts of the support frame, and the clamp positioning device is located on the inner side of the roller assembly, the first motor is installed on the rear side of the support frame through the motor fixing frame, the output end of the first motor is connected with a helical gear, the helical rack is installed on the main slide, the helical gear is meshed with the helical rack, the trolley positioning device and the gas-electric quick-plug unit are installed on the front side of the support frame, and the lower end of the support frame is connected with a sensing block.

[0006] Furthermore, it also includes: a PLC control module, and the main slide, the first motor, the fixture positioning device, the trolley positioning device, the pneumatic and electric quick-insertion unit and the fixture library are all electrically connected to the PLC control module.

[0007] Furthermore, the roller assembly includes: a roller support, a guide wheel assembly, a steel roller and a dust cover, the roller support is installed on a support frame, the six steel rollers are rotatably connected to the support frame through bearings, six guide wheel assemblies are installed on the side of the support frame, and multiple dust covers are installed on the roller support, and the dust cover is located between two adjacent steel rollers.

[0008] Furthermore, the guide wheel assembly includes: an L-shaped fixing frame, a guide wheel and an eccentric cylinder. The L-shaped fixing frame is connected to the support frame by bolts. The upper end surface of the L-shaped fixing frame is connected to the eccentric cylinder, and the eccentric cylinder is rotatably connected to the guide wheel through a bearing.

[0009] Furthermore, the main slide includes: a steel frame, a first linear guide, a first slider, a mounting surface, a protective cover, a sensor, a mechanical limit device and a mechanical travel switch. The steel frame is connected to the mounting surface, on which two first linear guides and a helical rack are installed, and multiple first sliders are installed at the lower end of the support frame. The two first linear guides are respectively slidably connected with the first sliders, the side of the helical rack is installed with a first protective cover, and the side of the first linear guide is installed with a second protective cover, the side of the steel frame is slidably connected with a sensor, two mechanical limit devices are installed on the steel frame, and a mechanical travel switch is arranged on the side end surface of the steel frame, and the sensor and the mechanical travel switch are electrically connected to the PLC control module.

[0010] Furthermore, the fixture positioning device includes: a thin cylinder and a cylindrical pin, the thin cylinder is installed on a support frame, the output end of the thin cylinder is transmission-connected with the cylindrical pin, and the thin cylinder is electrically connected to the PLC control module.

[0011] Furthermore, the fixture library includes: a fixture library base, a support roller assembly, a traction mechanism, a driving slide device, a second linear guide and a second slider. Support roller assemblies are installed on the front and rear sides of the fixture library base. Two of the second linear guides are installed on the fixture library base. The second slider is connected to the lower end surface of the traction mechanism. The second slider is slidably connected to the second linear guide. A driving slide device is provided on the fixture library base. The traction mechanism is connected to the driving slide device. The driving slide device and the traction mechanism 14 are electrically connected to the PLC control module.

[0012] Furthermore, the driving slide device includes: a bearing seat, a ball screw, a second motor, a small synchronous wheel, a large synchronous wheel and a synchronous belt. Two bearing seats are installed on the base of the fixture library, and a ball screw is rotatably connected between the two bearing seats. The ball screw is connected to the lower end surface of the traction mechanism through a threaded slider, and the end of the ball screw is connected to a large synchronous wheel. A second motor is installed on the base of the fixture library, and a small synchronous wheel is connected to the output end of the second motor. The small synchronous wheel is transmission-connected to the large synchronous wheel through a synchronous belt, and the second motor is electrically connected to the PLC control module.

[0013] Furthermore, the traction mechanism includes: a trapezoidal block, a connecting plate, a cam follower and a clamp guide block, the connecting plate is connected to the threaded slider and the second slider, the cam follower is installed on the side of the connecting plate, the clamp guide block is installed on the connecting plate, the lower end of the connecting plate is connected to the trapezoidal block, a round hole is provided in the trapezoidal block, and the cam follower is electrically connected to the PLC control module.

[0014] Furthermore, a gasket for adjusting the position of the first motor is arranged on the support frame.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a novel clamp pushing and traction device, which adopts an integrated design for the clamp roller support to reduce the workload of on-site adjustment; the eccentric shaft form adopted by the guide wheel and the eccentric cylindrical structure makes the adjustment more convenient; the ball screw is adopted in the transmission structure of the driving slide device, which effectively shortens the space occupied by the clamp library, reduces the number of parts of the device, and thus reduces the complexity and difficulty of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the device of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the slide trolley of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the roller assembly of the utility model;

[0020] Figure 4 It is a cross-sectional view of the roller assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the main slide of the utility model;

[0022] Figure 6 for Figure 5 Enlarged view of area A in the middle;

[0023] Figure 7 for Figure 5 Enlarged view of middle area B;

[0024] Figure 8 It is a structural schematic diagram of the fixture positioning device of the utility model;

[0025] Fig. 9 It is a structural schematic diagram of the fixture library of the utility model;

[0026] Fig.10 It is an axonometric diagram of the fixture library of the utility model;

[0027] Fig.11 This is a schematic diagram of the electrical connection of the PLC control module of the utility model.

[0028] Description of reference numerals:

[0029] PLC control module 1, slide trolley 2, fixture library 3, first motor 4, roller assembly 5, fixture positioning device 6, trolley positioning device 7, pneumatic and electric quick plug unit 8, roller support 9, guide wheel assembly 10, steel roller 11, dust cover 12, support roller assembly 13, traction mechanism 14, drive slide device 15, small synchronous wheel 16, fixture library base 17, fixture guide block 18, main slide 19, support frame 20, steel frame 22, first linear guide 23, first slider 24, mounting surface 25, Helical rack 26, first protective cover 27, helical gear 28, second protective cover 29, second linear guide 31, second slider 32, induction block 33, sensor 34, mechanical limit device 35, mechanical travel switch 36, thin cylinder 61, cylindrical pin 62, L-shaped fixing frame 101, guide wheel 102, eccentric cylinder 103, trapezoidal block 141, connecting plate 142, cam follower 143, bearing seat 151, ball screw 152, second motor 153, large synchronous wheel 154, synchronous belt 155. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementations. It should be understood that the specific implementations described herein are only used to explain the utility model and are not used to limit the utility model, that is, the specific implementations described are only part of the implementations of the utility model, not all of the specific implementations. The components of the specific implementations of the utility model described and shown in the drawings here can be arranged and designed in various different configurations, and the utility model can also have other implementations.

[0031] Therefore, the following detailed description of the specific embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected specific embodiments of the present invention. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0032] In order to further understand the content, features and functions of the utility model, the following specific implementation modes are given as examples and described in detail with the accompanying drawings as follows:

[0033] Example 1: Combination Figures 1 to 11To illustrate, a new type of fixture pushing and pulling device of this embodiment includes: a main slide 19, a slide trolley 2 and a fixture library 3, two of the fixture libraries 3 are symmetrically arranged on the left and right sides of the main slide 19, the main slide 19 is slidably connected to the slide trolley 2, the slide trolley 2 slides along the front and rear directions of the main slide 19, and support legs are arranged under the main slide 19 and the fixture library 3. The slide trolley 2 includes: a support frame 20, a first motor 4, a roller assembly 5, a fixture positioning device 6, and a trolley positioning device 7 , gas-electric quick-plug unit 8 and induction block 33, the support frame 20 is slidably connected to the main slide 19, the upper end of the support frame 20 is equipped with roller assemblies 5, the diagonal parts of the support frame 20 are equipped with fixture positioning devices 6, and the fixture positioning devices 6 are located on the inner side of the roller assembly 5, the rear side of the support frame 20 is equipped with a first motor 4 through a motor fixing frame 21, the output end of the first motor 4 is connected to a bevel gear 28, the bevel rack 26 is installed on the main slide 19, and the bevel gear 28 is meshed with the bevel rack 26 The support frame 20 is connected, and a trolley positioning device 7 and a pneumatic and electric quick-insertion unit 8 are installed on the front side of the support frame 20, and a sensing block 33 is connected to the lower end of the support frame 20; wherein, the main slide 19 is equipped with a cylinder positioning groove corresponding to the required stop position and matched with the trolley positioning device 7, and a secondary positioning is performed when the slide trolley 2 reaches the specified working position and cooperates with the stop of the first motor 4 to ensure the accuracy of the fixture in place and the auxiliary positioning of the slide trolley 2, the support frame 20 is welded by a rectangular square tube with a wall thickness of 6mm, the roller assembly 5 is used to support the fixture BASE, the fixture positioning device 6 is used to position the fixture BASE, and a circular pad with a thickness of 8mm is installed at the end of the first motor 4 to prevent the axial movement of the bevel gear 28, and the sensing block 33 is an external hexagonal bolt for matching with the sensor 34 and the mechanical travel switch 36; it also includes: a PLC control module 1, and the main slide 19, the first motor 4, the fixture positioning device 6, the trolley positioning device 7, the pneumatic and electric quick-insertion unit 8 and the fixture library 3 are all electrically connected to the PLC control module 1;

[0034] The roller assembly 5 includes: a roller support 9, a guide wheel assembly 10, a steel roller 11 and a dust cover 12. The roller support 9 is installed on a support frame 20. The six steel rollers 11 are rotatably connected to the support frame 20 through bearings. Six guide wheel assemblies 10 are installed on the side of the support frame 20. A plurality of dust covers 12 are installed on the roller support 9, and the dust cover 12 is located between two adjacent steel rollers 11. The roller support 9 is welded from steel plates. The roller support 9 is a long strip groove structure. Six circular holes with a diameter of 30 mm are opened on the left and right sides of the roller support 9, and the circular holes are coaxial on the left and right sides. The steel roller 11 is set to have a diameter of 90 mm and a thickness of 56 mm. Deep groove ball bearings are installed on the left and right sides of the steel roller 11. A cylindrical rod with an end cover at one end and a groove at the other end is inserted into each circular hole to insert the bearing in the steel roller 11 and support the steel roller 11. In order to prevent the steel roller 11 from being displaced in the axial direction, a washer is set at both ends of the roller. After the cylindrical rod is inserted, a 3mm pad is connected to one end with the groove and locked with 2 bolts. Its function is to prevent the cylindrical rod from rotating and displacing and improve the stability of the cylindrical rod.

[0035] The guide wheel assembly 10 includes: an L-shaped fixing frame 101, a guide wheel 102 and an eccentric cylinder 103. The L-shaped fixing frame 101 is connected to the support frame 20 by bolts. The eccentric cylinder 103 is connected to the upper end surface of the L-shaped fixing frame 101. The eccentric cylinder 103 is rotatably connected to the guide wheel 102 through a bearing; the eccentric cylinder 103 is connected to the L-shaped fixing frame 101 by an external hexagonal bolt, and the guide wheel 102 is mounted on the eccentric cylinder 103 through two deep groove ball bearings to realize the rotation of the guide wheel 102. The gap between the guide wheel 102 and the roller support 9 is adjusted by the eccentric cylinder 103, and its function is to guide the fixture Base when it slides on the steel roller 11;

[0036] The main slide 19 includes: a steel frame 22, a first linear guide 23, a first slider 24, a mounting surface 25, a first protective cover 27, a sensor 34, a mechanical limit device 35 and a mechanical travel switch 36. The steel frame 22 is connected to the mounting surface 25, and two first linear guides 23 and a helical rack 26 are installed on the mounting surface 25. A plurality of the first sliders 24 are installed at the lower end of the support frame 20. The two first linear guides 23 are respectively slidably connected with the first sliders 24, and the first protective cover 27 is installed on the side of the helical rack 26. The second protective cover 29 is installed on the side of the first linear guide 23. The side of the steel frame 22 is slidably connected with the sensor 34, and two mechanical limit devices 35 are installed on the steel frame 22. A mechanical travel switch is arranged on the side end surface of the steel frame 22. The switch 36, the sensor 34 and the mechanical travel switch 36 are all electrically connected to the PLC control module 1; the steel frame 22 is formed by welding two rectangular square tubes with a wall thickness of 8mm and several short tubes, the helical rack 26 is consistent with the length of the steel frame 22, the first protective cover 27 is made of 3mm steel plate bending, and each working position on the mounting surface 25 is equipped with a sensor 34 that can slide left and right to detect the position of the slide trolley 2. The end of the mechanical limit device 35 is connected with a polyurethane block to improve the buffering of the impact stress when the slide trolley 2 runs beyond the stroke. The mechanical limit device 35 and the mechanical travel switch 36 are used to prevent the trolley from running beyond the stroke. The sensor 34 is electrically connected to different robots corresponding to different workstations through the PLC control module 1, and is used to activate the robot work of the corresponding workstation after the slide trolley 2 reaches the specified position;

[0037] The fixture positioning device 6 includes: a thin cylinder 61 and a cylindrical pin 62, wherein the thin cylinder 61 is mounted on the support frame 20, the output end of the thin cylinder 61 is connected to the cylindrical pin 62, and the thin cylinder 61 is electrically connected to the PLC control module 1; the output end of the thin cylinder 61 is connected to an output rod, and a T-slot is provided at the end of the cylindrical pin 62, and the T-slot end is connected to the output rod, and the extension and retraction of the cylindrical pin 62 are realized by opening and closing the thin cylinder 61;

[0038] The fixture library 3 includes: a fixture library base 17, a support roller assembly 13, a traction mechanism 14, a driving slide device 15, a second linear guide rail 31 and a second slider 32. The support roller assembly 13 is installed on both the front and rear sides of the fixture library base 17. Two of the second linear guide rails 31 are installed on the fixture library base 17. The second slider 32 is connected to the lower end surface of the traction mechanism 14. The second slider 32 is slidably connected to the second linear guide rail 31. The fixture library base 17 is provided with a driving slide device 15. The traction mechanism 14 is connected to the driving slide device 15. The driving slide device 15 and the traction mechanism 14 are electrically connected to the PLC control module 1. The traction mechanism 14 can realize switching operations between fixtures of different models, thereby improving the applicability of the entire device. The traction mechanism 14 slides in the left and right directions along the fixture library base 17 to pull the fixture into or out of the fixture library.

[0039] The driving slide device 15 includes: a bearing seat 151, a ball screw 152, a second motor 153, a small synchronous wheel 16, a large synchronous wheel 154 and a synchronous belt 155. Two bearing seats 151 are installed on the fixture base 17. A ball screw 152 is rotatably connected between the two bearing seats 151. The ball screw 152 is connected to the lower end surface of the traction mechanism 14 through a threaded slider. The end of the ball screw 152 is connected to the large synchronous wheel 154. The second motor 153 is installed on the fixture base 17. The output end of the second motor 153 is connected to the small synchronous wheel 16. The small synchronous wheel 16 is transmission-connected to the large synchronous wheel 154 through a synchronous belt 155. The second motor 153 is electrically connected to the PLC control module 1;

[0040] The traction mechanism 14 includes: a trapezoidal block 141, a connecting plate 142, a cam follower 143 and a fixture guide block 18. The connecting plate 142 is connected to the threaded slider and the second slider 32. The cam follower 143 is installed on the side of the connecting plate 142. The fixture guide block 18 is installed on the connecting plate 142. The lower end of the connecting plate 142 is connected to the trapezoidal block 141. The trapezoidal block 141 is provided with a round hole. The cam follower 143 is electrically connected to the PLC control module 1; the round hole is used for the ball screw 152 to pass through to avoid interference. The support frame 20 is provided with a gasket for adjusting the position of the first motor 4; the gasket is made of a set of 5mm thick steel combination, connected to the connecting block, and is used to adjust the position of the first motor 4, and then adjust the gap between the helical gear 28 and the helical rack 26; the pneumatic and electric quick-plug unit 8, the sensor 34 and the mechanical travel switch 36 are all electrically connected to the input end of the PLC control module 1, and the first motor 4, the trolley positioning device 7, the thin cylinder 61, the second motor 153 and the cam follower 143 are all electrically connected to the output end of the PLC control module 1;

[0041] The present application has two fixture libraries 3 symmetrically arranged on the left and right sides of the main slide 19, and the main slide 19 is slidably connected to a slide trolley 2, which slides along the front and rear directions of the main slide 19. The main slide 19, the slide trolley 2 and the fixture library 3 are all electrically connected to the PLC control module 1, thereby realizing the switching transmission of the fixture and the entry and exit of the fixture. A second motor 153 is installed on the fixture library base 17, and a small synchronous wheel 16 is connected to the output end of the second motor 153. The small synchronous wheel 16 is connected to the large synchronous wheel 154 through a synchronous belt 155 and the helical rack 26 cooperates with the helical gear 28, thereby realizing the control of noise generated during operation.

[0042] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] Although the present application has been described above with reference to specific embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the specific embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel clamp pushing and pulling device, characterized in that: include: A main slide (19), a slide trolley (2) and a fixture library (3), wherein the two fixture libraries (3) are symmetrically arranged on the left and right sides of the main slide (19), the main slide (19) is slidably connected to the slide trolley (2), and the slide trolley (2) comprises: a support frame (20), a first motor (4), a roller assembly (5), a fixture positioning device (6), a trolley positioning device (7), a pneumatic and electric quick-insertion unit (8) and an induction block (33), the support frame (20) is slidably connected to the main slide (19), and the roller assemblies (5) are installed at the front and rear ends of the upper ends of the support frame (20). The diagonal parts of the support frame (20) are all equipped with fixture positioning devices (6), and the fixture positioning devices (6) are located on the inner side of the roller assembly (5). The rear side of the support frame (20) is equipped with a first motor (4) through a motor fixing frame (21). The output end of the first motor (4) is connected with a bevel gear (28). The bevel gear rack (26) is installed on the main slide (19). The bevel gear (28) is meshedly connected with the bevel gear rack (26). The front side of the support frame (20) is equipped with a trolley positioning device (7) and a pneumatic and electric quick-insertion unit (8). The lower end of the support frame (20) is connected with an induction block (33).

2. A novel clamp pushing and pulling device according to claim 1, characterized in that: Also includes: A PLC control module (1), the main slide (19), the first motor (4), the fixture positioning device (6), the trolley positioning device (7), the pneumatic and electrical quick-insertion unit (8) and the fixture library (3) are all electrically connected to the PLC control module (1).

3. A novel clamp pushing and pulling device according to claim 1, characterized in that: The roller assembly (5) comprises: a roller support (9), a guide wheel assembly (10), a steel roller (11) and a dust cover (12); the roller support (9) is mounted on a support frame (20); six steel rollers (11) are rotatably connected to the support frame (20) via bearings; six guide wheel assemblies (10) are mounted on the side of the support frame (20); a plurality of dust covers (12) are mounted on the roller support (9), and the dust cover (12) is located between two adjacent steel rollers (11).

4. A novel clamp pushing and pulling device according to claim 3, characterized in that: The guide wheel assembly (10) comprises: an L-shaped fixing frame (101), a guide wheel (102) and an eccentric cylinder (103); the L-shaped fixing frame (101) is connected to the support frame (20) via bolts; the eccentric cylinder (103) is connected to the upper end surface of the L-shaped fixing frame (101); and the eccentric cylinder (103) is rotatably connected to the guide wheel (102) via a bearing.

5. A novel clamp pushing and pulling device according to claim 2, characterized in that: The main slide (19) comprises: a steel frame (22), a first linear guide rail (23), a first slider (24), a mounting surface (25), a first protective cover (27), a sensor (34), a mechanical limit device (35) and a mechanical travel switch (36); the steel frame (22) is connected to the mounting surface (25); two first linear guide rails (23) and a helical rack (26) are mounted on the mounting surface (25); a plurality of the first sliders (24) are mounted at the lower end of the support frame (20); the two first linear guide rails (23) and the first sliders (24) are mounted on the lower end of the support frame (20); The rails (23) are slidably connected with first sliders (24), the side of the helical rack (26) is provided with a first protective cover (27), the side of the first linear guide rail (23) is provided with a second protective cover (29), the side of the steel frame (22) is slidably connected with a sensor (34), the steel frame (22) is provided with two mechanical limit devices (35), a mechanical travel switch (36) is provided on the side end surface of the steel frame (22), and the sensor (34) and the mechanical travel switch (36) are both electrically connected to the PLC control module (1).

6. A novel clamp pushing and pulling device according to claim 2, characterized in that: The fixture positioning device (6) comprises: a thin cylinder (61) and a cylindrical pin (62); the thin cylinder (61) is mounted on a support frame (20); the output end of the thin cylinder (61) is transmission-connected to the cylindrical pin (62); and the thin cylinder (61) is electrically connected to a PLC control module (1).

7. A novel clamp pushing and pulling device according to claim 2, characterized in that: The fixture library (3) comprises: a fixture library base (17), a support roller assembly (13), a traction mechanism (14), a driving slide device (15), a second linear guide rail (31) and a second slider (32); the support roller assembly (13) is installed on both the front and rear sides of the fixture library base (17); two second linear guide rails (31) are installed on the fixture library base (17); the second slider (32) is connected to the lower end surface of the traction mechanism (14); the second slider (32) is slidably connected to the second linear guide rail (31); a driving slide device (15) is arranged on the fixture library base (17); the traction mechanism (14) is connected to the driving slide device (15); the driving slide device (15) and the traction mechanism (14) are electrically connected to the PLC control module (1).

8. A novel clamp pushing and pulling device according to claim 7, characterized in that: The driving slide device (15) comprises: a bearing seat (151), a ball screw (152), a second motor (153), a small synchronous wheel (16), a large synchronous wheel (154) and a synchronous belt (155); two bearing seats (151) are installed on the fixture library base (17); a ball screw (152) is rotatably connected between the two bearing seats (151); the ball screw (152) is connected to the lower end surface of the traction mechanism (14) through a threaded slider; the end of the ball screw (152) is connected to the large synchronous wheel (154); a second motor (153) is installed on the fixture library base (17); the output end of the second motor (153) is connected to the small synchronous wheel (16); the small synchronous wheel (16) is transmission-connected to the large synchronous wheel (154) through a synchronous belt (155); and the second motor (153) is electrically connected to the PLC control module (1).

9. A novel clamp pushing and pulling device according to claim 8, characterized in that: The traction mechanism (14) comprises: a trapezoidal block (141), a connecting plate (142), a cam follower (143) and a fixture guide block (18); the connecting plate (142) is connected to a threaded slider and a second slider (32); a cam follower (143) is mounted on the side of the connecting plate (142); a fixture guide block (18) is mounted on the connecting plate (142); a trapezoidal block (141) is connected to the lower end of the connecting plate (142); a circular hole is arranged in the trapezoidal block (141); and the cam follower (143) is electrically connected to a PLC control module (1).

10. A novel clamp pushing and pulling device according to claim 1, characterized in that: The support frame (20) is provided with a gasket for adjusting the position of the first motor (4).