Positioning and clamping structure with self-locking function

Abstract

The utility model discloses a positioning and clamping structure with a self-locking function. The positioning and clamping structure comprises a mounting seat, a telescopic positioning platform and a self-locking module, the mounting seat is provided with a seat plate and two side plates oppositely and vertically arranged on the two sides of the seat plate, and an assembly space is formed between the two side plates; the telescopic positioning platform can advance and retreat relative to the seat plate and is arranged in the assembly space, and comprises a platform main body and a telescopic driving module mounted in the platform main body; a locking groove is concavely formed in the middle of the bottom end of the front end face of the platform body. The self-locking module comprises a fixing seat, a locking hook and a torsion spring, the fixing seat is installed at the front end of the seat plate, two base plates are oppositely arranged on the rear end face of the fixing seat, and the locking hook is hinged between the two base plates through a pin shaft; the locking hook is provided with a through opening in the penetrating position of the pin shaft, the torsion spring is arranged on the section, located in the through opening, of the pin shaft in a sleeving mode, and two torsion arms of the torsion spring abut against the fixing base and the base plate respectively to provide driving force for the locking hook to swing towards the platform body. Self-locking can be achieved, and manual intervention is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning and clamping structure technical field, especially a positioning and clamping structure with self locking function. BACKGROUND

[0002] With the development of intelligent manufacturing and industry 4.0, the automatic production line becomes the key to improve production efficiency and product quality. However, when dealing with complex and changeable workpiece machining environment, the traditional clamping structure does not have a self locking structure, and when the cylinder pressure is insufficient, the self locking is not stable, manual mechanical limiting and manual plugging positioning pin are needed to realize mechanical self locking, which is time-consuming and laborious. And in the narrow space or automatic production line, manual mechanical limiting greatly limits the production efficiency. SUMMARY

[0003] The utility model discloses a positioning and clamping structure with self locking function.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A positioning and clamping structure with self locking function, including mounting seat, telescopic positioning platform and self locking module, the mounting seat is equipped with the seat board and two side plates opposite and erect in the both sides of seat board, the seat board is recessed into the lock mouth in the middle section front end, the assembly space is formed between the two side plates, the telescopic positioning platform can be set into the assembly space by advancing and retreating relative to the seat board, and it includes platform main part and telescopic drive module installed in platform main part, the platform main part is recessed with the lock holding groove in the bottom end middle part of its front end face, the drive end of telescopic drive module is connected with the middle section of seat board after passing out from the bottom of platform main part, and the drive end of telescopic drive module is telescopic, drives the platform main part to advance and retreat relative to the seat board.

[0006] The self locking module includes fixed seat, locking hook and torsion spring, the fixed seat is installed to the seat board front end in front and back correspondence with the lock mouth, the rear end face of fixed seat is opposite and is provided with two base plates inserted into the lock mouth, and the locking hook is hinged between the two base plates with pin shaft, the locking hook is provided with the through hole at the insertion place of pin shaft, the torsion spring is sleeved on the section of pin shaft in the through hole, and the two torsion arms of torsion spring are respectively supported on fixed seat and seat board, provide the driving force that locking hook swings towards platform main part, the drive end of telescopic drive module is retracted, drives the platform main body to be contained in the assembly space, the top of locking hook is correspondingly hooked into the lock holding groove, and self locking is realized.

[0007] As a further technical scheme of the utility model: the telescopic drive module includes two groups of first pneumatic actuating elements installed in the platform main body, the platform main body is formed with first air passages in it for connecting the pneumatic cavities of the two groups of first pneumatic actuating elements and is formed with a plurality of first air holes in the front end face for connecting the first air passages, compressed air is input into the first air passages from the first air holes and is input into the pneumatic cavities of the two groups of first pneumatic actuating elements along the first air passages, and the first pneumatic actuating elements can convert gas energy into mechanical energy to realize linear reciprocating motion.

[0008] As a further technical scheme of the utility model: the telescopic positioning platform includes a plurality of front pressing units and a plurality of rear pressing units installed in the platform main body at intervals, the platform main body is formed with a front pressing opening corresponding to each front pressing unit on the top of the front end face and is formed with a rear pressing opening corresponding to each rear pressing unit on the top of the rear end face, the front pressing unit and the rear pressing unit each include a group of second pneumatic actuating elements installed in the platform main body and a press block obliquely nested and capable of sliding with the driving end of the second pneumatic actuating element, the press block is installed in the corresponding front pressing opening or rear pressing opening, the abutting surface of the driving end of the second pneumatic actuating element and the press block is a matching inclined surface, the driving end of the second pneumatic actuating element and the press block are each provided with an obliquely nested guide groove on both sides, for the telescopic movement of the driving end of the second pneumatic actuating element, and for driving the press block to advance and retreat in the corresponding front pressing opening or rear pressing opening.

[0009] As a further technical scheme of the utility model: the platform main body is formed with second air passages in it for connecting the pneumatic cavities of each group of second pneumatic actuating elements and is formed with a plurality of second air holes in the front end face for connecting the second air passages, compressed air is input into the second air passages from the second air holes and is input into the pneumatic cavities of each group of second pneumatic actuating elements along the second air passages, and the second pneumatic actuating elements can convert gas energy into mechanical energy to realize linear reciprocating motion.

[0010] As a further technical scheme of the utility model: the seat plate is vertically provided with a guide column on the middle section, and the middle part of the platform main body is formed with a column receiving opening corresponding to the guide column for the guide column to pass into the column receiving opening.

[0011] As a further technical scheme of the utility model: the side plate is provided with a guide rail sliding block on the side facing the assembly space, and the telescopic positioning platform includes two straight guide rails installed on both sides of the platform main body, and each guide rail sliding block is slidably installed on the straight guide rail on the same side.

[0012] Compared with the prior art, the positioning and clamping structure with self-locking function has the advantages that: through the cooperation between the mounting seat, the telescopic positioning platform and the self-locking module, when the driving end of the telescopic driving module is retracted and the platform main body is accommodated in the assembly space, the top of the locking hook is hooked into the locking groove, self-locking is realized, manual intervention is not needed, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a first perspective view of the positioning and clamping structure with self-locking function.

[0014] Figure 2 It is a second perspective view of the positioning and clamping structure with self-locking function.

[0015] Figure 3 It is a sectional view of the front pressing unit.

[0016] Figure 4 It is a sectional view of the telescopic positioning platform.

[0017] Figure 5 It is a distribution diagram of the first air channel and the second air channel in the platform main body. DETAILED DESCRIPTION

[0018] The specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the protection scope of the utility model.

[0019] Please refer to Figure 1 、 Figure 2 A positioning and clamping structure with self-locking function, including mounting seat 10, telescopic positioning platform 20 and self-locking module 30, mounting seat 10 is equipped with seat plate 11 and the two side plates 12 vertically set on both sides of seat plate 11 opposite seat plate 11, seat plate 11 is recessed into the lock mouth 111 in the front end of the middle segment, the assembly space 121 is formed between the two side plates 12, the telescopic positioning platform 20 can be set into the assembly space 121 relative to seat plate 11, it includes platform main body 21 and telescopic driving module 22 installed into platform main body 21, the lock holding groove 211 is recessed in the bottom end middle part of the front end face of platform main body 21, the driving end of telescopic driving module 22 is out of the bottom of platform main body 21 after, and the middle segment of seat plate 11 is connected, for the driving end telescopic of telescopic driving module 22, drive platform main body 21 relative to seat plate 11 to advance and retreat,

[0020] Please refer to Figure 3 、 Figure 4The self-locking module 30 comprises a fixing base 31, a locking hook 32 and a torsion spring 33. The fixing base 31 is installed on the front end of the seat plate 11 corresponding to the front and rear of the locking hole 111. The rear end surface of the fixing base 31 is provided with two base plates 311 penetrating into the locking hole 111. The locking hook 32 is hingedly connected between the two base plates 311 by a pin shaft 301. The locking hook 32 is provided with a through hole 321 at the penetrating position of the pin shaft 301. The torsion spring 33 is sleeved on a section of the pin shaft 301 located in the through hole 321. The two torsion arms of the torsion spring 33 abut on the fixing base 31 and the seat plate 11 respectively, providing driving force for the swinging of the locking hook 32 towards the platform body 21, so that the driving end of the telescopic driving module 22 is retracted, the platform body 21 is accommodated in the assembly space 121, the top of the locking hook 32 is hooked into the locking groove 211, and self-locking is achieved. When the driving end of the telescopic driving module 22 is extended, the platform body 21 is driven to pass out of the assembly space 121, the top of the locking hook 32 is disengaged from the locking groove 211, and the locking of the platform body 21 is released.

[0021] Further, in combination with the drawings, Figure 5 In the embodiment, the telescopic driving module 22 comprises two groups of first pneumatic actuating elements 221 installed in the platform body 21. The driving end of each first pneumatic actuating element 221 passes out of the bottom of the platform body 21 and is connected to the middle segment of the seat plate 11. The platform body 21 is formed with a first air channel 201 connecting the pneumatic cavities of the two groups of first pneumatic actuating elements 221 and a plurality of first air holes 202 formed in the front end surface and communicating with the first air channel 201. Compressed air is input from the first air holes 202 into the first air channel 201 and then into the pneumatic cavities of the two groups of first pneumatic actuating elements 221 along the first air channel 201. The first pneumatic actuating elements 221 convert gas energy into mechanical energy to realize linear reciprocating motion.

[0022] Further, in the embodiment, the telescopic positioning platform 20 comprises a plurality of front pressing units 23 and a plurality of rear pressing units 24 which are installed in the platform body 21 at intervals; the platform body 21 is provided with a front pressing opening 212 on the top of the front end face corresponding to each front pressing unit 23 and a rear pressing opening 213 on the top of the rear end face corresponding to each rear pressing unit 24; each of the front pressing unit 23 and the rear pressing unit 24 comprises a group of second pneumatic actuating elements 41 installed in the platform body 21 and a slantingly nested pressing block 42 which is slidable with the driving end of the second pneumatic actuating element 41, the pressing block 42 is installed in the corresponding front pressing opening 212 or rear pressing opening 213, the abutting surface of the driving end of the second pneumatic actuating element 41 and the pressing block 42 is a matching inclined surface, the driving end of the second pneumatic actuating element 41 and the pressing block 42 are provided with slantingly nested guide grooves on both sides, for the telescopic driving of the driving end of the second pneumatic actuating element 41, to drive the pressing block 42 to advance and retreat in the corresponding front pressing opening 212 or rear pressing opening 213, and one end of the pressing block 42 penetrates out of or is accommodated in the front pressing opening 212 or rear pressing opening 213.

[0023] Further, in the embodiment, the platform body 21 is formed with a second air channel 203 which communicates the pneumatic cavities of each group of second pneumatic actuating elements 41 and a plurality of second air holes 204 which are provided on the front end face of the platform body 21 and communicate with the second air channel 203, for the compressed air to be input from the second air holes into the second air channel 203 and then into the pneumatic cavities of each group of second pneumatic actuating elements 41 along the second air channel 203, and the second pneumatic actuating elements 41 convert the gas energy into mechanical energy to realize the linear reciprocating motion.

[0024] Further, in the embodiment, the seat plate 11 is vertically provided with a guide column 112 on the middle section, and the middle part of the platform body 21 is formed with a column accommodating opening 214 corresponding to the guide column 112, for the guide column 112 to penetrate into the column accommodating opening 214, to improve the stability of the platform body 21 when advancing and retreating relative to the seat plate 11.

[0025] Further, in the embodiment, one side of the side plate 12 which faces the assembly space 121 is provided with a guide rail sliding block 122, and the telescopic positioning platform 20 comprises two straight guide rails 25 which are installed on both sides of the platform body 21, each guide rail sliding block 122 is slidably installed on the same side straight guide rail 25, and the seat plate 11 is provided with a through opening 101 on both sides for the bottom of the straight guide rail 25 to penetrate out, to provide the driving end of the telescopic driving module 22 to be telescopic to drive the platform body 21 to advance and retreat relative to the seat plate 11 in the assembly space 121, and the guide rail sliding block 122 cooperates with the straight guide rail 25 to provide the stability of the platform body 21 when advancing and retreating relative to the seat plate 11.

[0026] It can be understood that the use method of the positioning and clamping structure with self-locking function is as follows: after the mounting seat 10 is installed to the specified position, the drive end of the telescopic drive module 22 is telescoped, drives the platform body 21 to advance and retreat relative to the seat plate 11, and positioning is realized; subsequently, the plurality of front pressing units 23 and the plurality of rear pressing units 24 are started, the drive end of the second pneumatic actuator 41 is extended, drives the pressing block 42 to pass out from the corresponding front pressing port 212 or rear pressing port 213, and pressing is realized. In this way, the positioning and pressing functions can be realized, and when the drive end of the telescopic drive module 22 is retracted, drives the platform body 21 to be accommodated in the assembly space 121, the top of the locking hook 32 is correspondingly hooked into the locking groove 211, and self-locking is realized.

[0027] In summary, the positioning and clamping structure with self-locking function can realize self-locking when the drive end of the telescopic drive module 22 is retracted, drives the platform body 21 to be accommodated in the assembly space 121, and the top of the locking hook 32 is correspondingly hooked into the locking groove 211, without manual intervention, and the production efficiency is effectively improved.

[0028] As long as the various different embodiments of the utility model are combined without violating the idea of the utility model, they should be regarded as the disclosed contents of the utility model; within the technical concept of the utility model, various simple modifications of the technical scheme and arbitrary combinations of different embodiments without violating the idea of the utility model should be within the protection scope of the utility model.

Claims

1. A positioning and clamping structure with self-locking function, characterized in that: The utility model provides a telescopic positioning platform, including mounting seat (10), telescopic positioning platform (20) and self locking module (30), mounting seat (10) is equipped with seat board (11) and opposite both sides of seat board (11) two side plates (12) are set, and the recessed moulding of lock mouth (111) is formed to seat board (11) in the front end of middle section, and the assembly space (121) is formed to two side plates (12) between, telescopic positioning platform (20) can be set to assembly space (121) in the recession of seat board (11), and it includes platform main part (21) and telescopic drive module (22) installed to platform main part (21), and the recessed groove (211) is formed to platform main part (21) in the bottom end middle part of front end surface, and the drive end of telescopic drive module (22) is from the bottom of platform main part (21) and is connected with the middle section of seat board (11) after going out, and the drive end telescopic of telescopic drive module (22) drives platform main part (21) recession relative to seat board (11), The utility model provides a telescopic positioning platform, including mounting seat (10), telescopic positioning platform (20) and self locking module (30), mounting seat (10) is equipped with seat board (11) and opposite both sides of seat board (11) two side plates (12) are set, and the recessed moulding of lock mouth (111) is formed to seat board (11) in the front end of middle section, and the assembly space (121) is formed to two side plates (12) between, telescopic positioning platform (20) can be set to assembly space (121) in the recession of seat board (11), and it includes platform main part (21) and telescopic drive module (22) installed to platform main part (21), and the recessed groove (211) is formed to platform main part (21) in the bottom end middle part of front end surface, and the drive end of telescopic drive module (22) is from the bottom of platform main part (21) and is connected with the middle section of seat board (11) after going out, and the drive end telescopic of telescopic drive module (22) drives platform main part (21) recession relative to seat board (11), 2. The positioning and clamping structure with self-locking function according to claim 1, characterized in that: The utility model provides a telescopic positioning platform, including mounting seat (10), telescopic positioning platform (20) and self locking module (30), mounting seat (10) is equipped with seat board (11) and opposite both sides of seat board (11) two side plates (12) are set, and the recessed moulding of lock mouth (111) is formed to seat board (11) in the front end of middle section, and the assembly space (121) is formed to two side plates (12) between, telescopic positioning platform (20) can be set to assembly space (121) in the recession of seat board (11), and it includes platform main part (21) and telescopic drive module (22) installed to platform main part (21), and the recessed groove (211) is formed to platform main part (21) in the bottom end middle part of front end surface, and the drive end of telescopic drive module (22) is from the bottom of platform main part (21) and is connected with the middle section of seat board (11) after going out, and the drive end telescopic of telescopic drive module (22) drives platform main part (21) recession relative to seat board (11), 3. The positioning and clamping structure with self-locking function according to claim 1, characterized in that: The telescopic positioning platform (20) comprises a plurality of front pressing units (23) and a plurality of rear pressing units (24) installed in the platform body (21) at intervals; the platform body (21) is provided with a front pressing opening (212) corresponding to each front pressing unit (23) on the top of the front end face and a rear pressing opening (213) corresponding to each rear pressing unit (24) on the top of the rear end face; each of the front pressing unit (23) and the rear pressing unit (24) comprises a group of second pneumatic actuating elements (41) installed in the platform body (21) and a press block (42) obliquely nested and slidable with the driving end of the second pneumatic actuating element (41), the press block (42) is installed in the corresponding front pressing opening (212) or rear pressing opening (213), the abutting surface of the driving end of the second pneumatic actuating element (41) and the press block (42) is a matching inclined surface, and the driving end of the second pneumatic actuating element (41) and the press block (42) are provided with obliquely nested guide grooves on both sides for telescopic extension of the driving end of the second pneumatic actuating element (41) to drive the press block (42) to advance and retreat in the corresponding front pressing opening (212) or rear pressing opening (213).

4. The positioning and clamping structure with self-locking function according to claim 3, characterized in that: The platform body (21) is formed with a second air duct (203) communicating the pneumatic cavities of each group of second pneumatic actuating elements (41) and a plurality of second air holes (204) communicating with the second air duct (203) on the front end face, for inputting compressed air from the second air holes into the second air duct (203) and into the pneumatic cavities of each group of second pneumatic actuating elements (41) along the second air duct (203), and the second pneumatic actuating elements (41) convert gas energy into mechanical energy to realize linear reciprocating motion.

5. The positioning and clamping structure with self-locking function according to claim 1, characterized in that: The seat plate (11) is vertically provided with a guide column (112) on the middle section, and the middle part of the platform body (21) is formed with a column accommodating opening (214) corresponding to the guide column (112) for the guide column (112) to penetrate into the column accommodating opening (214).

6. The positioning and clamping structure with self-locking function according to claim 1, characterized in that: The side plate (12) is provided with a guide rail sliding block (122) on the side facing the assembly space (121), and the telescopic positioning platform (20) comprises two linear guide rails (25) installed on both sides of the platform body (21), and each guide rail sliding block (122) is slidably installed on the linear guide rail (25) on the same side.

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