Automatic telescopic ejector pin assembling machine

Abstract

The invention relates to the technical field of telescopic ejector pin machining, in particular to a telescopic ejector pin automatic assembling machine which comprises a rack and a machine table arranged on one side of the rack. The rotary table is rotationally mounted on the machine table; the clamps are evenly distributed in the circumferential direction of the rotary disc, fixed to the top of the rotary disc and used for positioning and assembling parts. An ejector pin assembly position, a pressure spring assembly position, an outer sleeve assembly position and a locking block assembly position are sequentially erected on the machine table at intervals in the rotating direction of the rotating disc, and all the assembly positions are respectively configured and are used for sequentially assembling corresponding parts to the previous part, so that the assembly of the telescopic ejector pin assembly is completed; through the arrangement of the rotating disc, one clamp can be sequentially rotated to the position under the four assembling positions, through cooperation of the assembling positions, the ejector pin can be firstly placed in the empty clamp and serves as a base part for subsequent assembling, and then the other three parts including the compression spring, the outer sleeve and the locking block are sequentially assembled on the ejector pin. Therefore, the telescopic ejector pin can be assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic ejector pin processing, and particularly to an automatic assembly machine for telescopic ejector pins. Background Art

[0002] The telescopic ejector pin is composed of an ejector pin, a compression spring, an outer sleeve, and a locking block, and is assembled step by step in sequence to form a telescopic ejector pin.

[0003] Currently, the assembly of telescopic ejector pins mostly adopts manual operation, and each assembly step requires a separate workstation; although this method is simple, it greatly limits the production efficiency. Each manual assembly not only takes a long time but also significantly increases the manufacturing cost; with the continuous expansion of the production scale, such a traditional assembly mode has been difficult to meet the requirements of high-efficiency production and cost savings, resulting in an extended production line length and low utilization rate of the workshop space. Summary of the Invention

[0004] The present invention provides an automatic assembly machine for telescopic ejector pins, which can improve the assembly efficiency of telescopic ejector pins and has a small space occupation ratio of the equipment. The specific solutions are as follows: The automatic assembly machine for telescopic ejector pins includes a frame and a machine table arranged on one side of the frame; it also includes a turntable and a fixture. The turntable is rotatably installed on the machine table; there are multiple fixtures evenly distributed along the circumferential direction of the turntable and fixed on the top of the turntable for positioning and assembling parts; along the rotation direction of the turntable, a ejector pin assembly position, a compression spring assembly position, an outer sleeve assembly position, and a locking block assembly position are sequentially and spacedly arranged on the machine table. Each assembly position is configured to sequentially assemble the corresponding parts onto the previous part to complete the assembly of the telescopic ejector pin assembly.

[0005] Further, the structures of each of the assembly positions are the same, and each includes a bracket connected to the machine table; and a guide pipe connected to the bracket and arranged vertically. The lower end of the guide pipe forms a discharge port adjacent to the turntable, and the upper end forms a feed port connected to the outlet of an external vibrating bowl.

[0006] Further, a partial pipe section of the guide pipe adjacent to the discharge port is a flexible pipe section; a switchable clamping plate is also installed on the bracket for selectively clamping or releasing the flexible pipe section.

[0007] Further, the flexible pipe section is made of transparent rubber material; a detection head is also installed on the bracket for detecting whether there are parts to be assembled inside when the flexible pipe section of the guide pipe is clamped.

[0008] Further, a guide plate fixedly connected to the machine table is also provided at the locking block assembly position; the guide plate is arc-shaped, and the curvature matches the rotation trajectory of the turntable; guide grooves extending to both sides are also opened on the bottom surface of the guide plate; an inclined guiding surface is formed at the bottom of one side of the guide plate adjacent to the outer sleeve assembly position.

[0009] Further, a first blanking port communicating with the guide groove is also formed in the middle of the material guide plate, and the first blanking port is located directly below the locking block assembly position.

[0010] Further, two pressure bars are symmetrically arranged in the guide groove, and the whole pressure bars are located at one end of the material guide plate far away from the outer sleeve assembly position.

[0011] Further, it also includes a clamping station arranged downstream of the locking block assembly position for clamping and limiting the locking block part to the neck groove of the ejector pin part; the clamping station includes a lifting block, a connecting block, a clamping block, a tapered head and an electric push rod; the lifting block is arranged on the machine table in a liftable manner; a plurality of connecting blocks are circumferentially distributed and fixed on the lifting block; a clamping block is hinged on each connecting block; a tapered head is slidably connected to the lifting block, and the side surface of the tapered head is always in contact with one end of the clamping block and forms an extrusion fit; an electric push rod is also installed on the lifting block, and the output shaft of the electric push rod is connected to the tapered head.

[0012] Further, one end of the material guide plate far away from the outer sleeve assembly position extends to directly below the clamping station, and a second blanking port communicating with the guide groove is formed at the top of the extending end.

[0013] Further, a blanking port is formed through the machine table, and the whole blanking port is located outside the turntable and between the ejector pin assembly position and the clamping station; a material grabbing part is also installed on the machine table for grabbing the assembled telescopic ejector pin assembly on the fixture into the blanking port.

[0014] Compared with the prior art, the present invention can at least achieve the following beneficial effects: Through the setting of the turntable, a fixture can be sequentially rotated to directly below the four assembly positions, and through the cooperation of each assembly position, the ejector pin can be first placed in an empty fixture and used as the base part for subsequent assembly, and then the remaining three parts, namely the compression spring, the outer sleeve and the locking block, can be sequentially assembled on this ejector pin to form the assembly of the telescopic ejector pin. Through the setting of the clamping station, the surface of the locking block made of metal can be recessed and deformed to achieve the locking effect between the locking block and the neck groove of the ejector pin. Through the setting of the material guide plate, after the whole outer sleeve axially moves downward to a specified position on the ejector pin, the position of the neck groove at the top of the ejector pin is exposed, which is convenient for the subsequent assembly of the locking block into the neck groove of the ejector pin; at the same time, one end of the material guide plate is extended and located directly below the clamping station to solve the problem that the too long compression spring part pushes the locking block and the outer sleeve parts away from the ejector pin part, ensuring that the locking block is always located in the neck groove of the ejector pin, and then cooperating with the clamping station to limit the locking block to the neck groove of the ejector pin. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings. Among them: Figure 1 It is a schematic cross-sectional structure diagram of the telescopic ejector pin after the assembly of the present invention.

[0016] Figure 2 It is a schematic overall structure diagram of the present invention.

[0017] Figure 3 It is a schematic structure diagram of each assembly position of the present invention.

[0018] Figure 4 It is a schematic diagram of the bracket and the guide pipe on each assembly position of the present invention.

[0019] Figure 5 For the present invention Figure 4 It is an isometric structure diagram.

[0020] Figure 6 For the present invention Figure 3 It is a front view structure diagram.

[0021] Figure 7 It is a schematic structure diagram of the guide plate of the present invention.

[0022] Figure 8 It is a bottom view structure diagram of the guide plate of the present invention.

[0023] Figure 9 It is an internal schematic diagram of the guide plate of the present invention.

[0024] Figure 10 It is a schematic structure diagram of the clamping station of the present invention.

[0025] Figure 11 For the present invention Figure 10 It is a schematic structure diagram of the A position in the present invention.

[0026] Figure 12 It is a bottom view schematic diagram of the clamping station of the present invention.

[0027] Figure 13 It is a schematic structure diagram of the clamping block of the present invention.

[0028] Figure 14 It is a schematic diagram of the state where one clamping block deflects and squeezes the locking block of the present invention.

[0029] Figure 15 It is a schematic diagram of the state where the clamping station of the present invention processes the locking block part.

[0030] Figure 16 This is a schematic diagram of the assembly sequence and positions of the parts of the telescopic ejector pin of the present invention.

[0031] Figure 17 This is a schematic diagram of the position when the relatively long compression spring part of the present invention is assembled onto the ejector pin part.

[0032] Figure 18 This is a schematic diagram of the structure of the material guiding tube of the present invention.

[0033] Among them, the reference numerals are as follows: 01, frame; 02, machine table; 10, turntable; 11, fixture; 12, ejector pin assembly position; 13, compression spring assembly position; 14, outer sleeve assembly position; 15, locking block assembly position; 16, bracket; 17, material guiding tube; 20, clamping plate; 21, detection head; 30, material guiding plate; 31, guiding groove; 32, inclined guiding surface; 33, blanking opening 1; 34, pressing strip; 35, blanking opening 2; 40, clamping station; 41, lifting block; 42, connecting block; 43, clamping block; 44, taper head; 45, electric push rod; 50, blanking port; 51, material grabbing part. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] Please first refer to Figure 1 As shown, the present invention provides a telescopic ejector pin automatic assembly machine, mainly for the assembly of a telescopic ejector pin composed of four parts: an ejector pin, a compression spring, an outer sleeve, and a locking block. As Figure 2 shown, it includes a frame 01 and a machine table 02 provided on one side of the frame 01; it also includes a turntable 10 and a fixture 11. The turntable 10 is rotatably arranged on the machine table 02, and a servo motor for driving the rotation of the turntable 10 is equipped at the bottom of the machine table 02; there are multiple fixtures 11 and they are evenly distributed along the circumference of the turntable 10 and fixed on the top of the turntable 10. The fixture 11 is specifically a container with an open top, the opening is a wide upper opening and a narrow lower opening, and through the opening setting, it is convenient for the ejector pin assembly position 12 to first insert and position the ejector pin part, so that the ejector pin located in the fixture 11 is in a vertical state. In this state, the ejector pin is convenient for subsequent parts to form an assembly with it; at the same time, as Figure 3As shown, along the clockwise rotation direction of the turntable 10, the ejector pin assembly position 12, the compression spring assembly position 13, the outer sleeve assembly position 14, and the locking block assembly position 15 are successively arranged at equal intervals on the machine table 02. Each assembly position is configured to sequentially assemble the corresponding parts onto the previous part until the four parts are assembled together to complete the assembly of the telescopic ejector pin assembly; It can be combined with Figure 3 and Figure 16 As shown, the specific assembly process of the above solution is as follows: S1. When any fixture 11 without a placed part rotates clockwise with the turntable 10 and is located directly below the ejector pin assembly position 12, the ejector pin assembly position 12 can first output the ejector pin part and insert it into the opening of the fixture 11 directly below it; S2. The fixture 11 with the ejector pin part in the vertical state rotates clockwise with the turntable 10 and continues to be located directly below the compression spring assembly position 13. The compression spring assembly position 13 can sleeve the compression spring part onto the ejector pin part in this fixture 11 to form the assembly between the ejector pin and the compression spring part; S3. The fixture 11 with the ejector pin and compression spring parts rotates clockwise with the turntable 10 and continues to be located directly below the outer sleeve assembly position 14. The outer sleeve assembly position 14 can sleeve the outer sleeve part on the outside of the compression spring to form the assembly among the ejector pin, compression spring, and outer sleeve parts; S4. The fixture 11 with the ejector pin, compression spring, and outer sleeve rotates clockwise with the turntable 10 and continues to be located directly below the locking block assembly position 15. The locking block assembly position 15 can place the locking block part into the neck groove of the ejector pin part to form the complete assembly among the four parts of the telescopic ejector pin; Generally speaking, based on the clockwise equal-angle rotation of the turntable 10 in this application, a fixture 11 can be successively rotated to directly below the four assembly positions. Through the cooperation of each assembly position, the ejector pin can be first placed in an empty fixture 11 and used as the base part for subsequent assembly. Subsequently, the other three parts, namely the compression spring, outer sleeve, and locking block, can be successively assembled onto this ejector pin to form the assembly of the telescopic ejector pin.

[0036] Referring to Figure 3 , Figure 4 and Figure 5 As shown, the structures of each assembly position are the same, and each includes a bracket 16 connected to the machine table 02; and a guide pipe 17 connected to the bracket 16 and arranged vertically. The bracket 16 can be driven by an external air cylinder to adjust its lifting in the vertical direction, so as to drive the guide pipe 17 to displace through the bracket 16, so that the distance between the discharge port of the guide pipe 17 and the fixture 11 on the turntable 10 is adjusted, and the positions of the discharge ports of the guide pipes 17 of each assembly position are configured as required; the four guide pipes 17 are respectively used to introduce the four parts of the ejector pin, compression spring, outer sleeve, and locking block. The lower end of the guide pipe 17 forms a discharge port adjacent to the turntable 10, and the upper end forms a feed port connected to the outlet of the external vibrating bowl (such asFigure 2 As shown in the figure, parts are fed through an external vibrating bowl. After entering the guide pipe 17, they are discharged from the outlet of the guide pipe 17 into the fixture 11 by gravity. Among them, as Figure 18 shown, the guide pipe 17 specifically consists of a thick steel pipe, a thick flexible pipe, and a thin flexible pipe that are connected in sequence from top to bottom. There is a guide rail for transporting parts on the vibrating bowl. Before the part moves to the end of the guide rail and enters the thick steel pipe, the part is specifically flushed into the thick steel pipe at the upper end of the guide pipe 17 by an external air gun and then enters the thin flexible pipe through the transition of the thick flexible pipe. The part falls into the fixture 11 by gravity through the thin flexible pipe, forming the effect of feeding. The above feeding method is a well-known technology and will not be elaborated here; When the above solution is used: Each assembly position is equipped with a corresponding vibrating bowl, and the vibrating bowl and the assembly position are connected by a guide pipe 17 for transitional material transportation. The four guide pipes 17 sequentially export the ejector pin, compression spring, outer sleeve, and locking block to the fixture 11 one by one in order. The specific export sequence steps can be as shown in the above assembly process, so that the four parts are assembled together to form the automatic assembly of the telescopic ejector pin.

[0037] Refer to Figure 4 and Figure 5 shown, the part of the guide pipe 17 adjacent to the outlet is a flexible pipe section; Two splints 20 that can be opened and closed are also installed on the bracket 16. The two splints 20 can be connected by an external air cylinder (not shown in the figure) to form a movement towards each other / away from each other, and are used to selectively clamp or release the flexible pipe section; When the above solution is used: By endowing the two splints 20 with the ability to open and close, the flexible pipe section of the guide pipe 17 can be clamped in advance to form a seal at the outlet of the guide pipe 17. Subsequently, a corresponding part is transported into the guide pipe 17 through an external vibrating bowl, and the part that enters the guide pipe 17 will not be directly discharged from the guide pipe 17 by gravity. Instead, when the turntable 10 drives a designated fixture 11 to be directly below this guide pipe 17, the two splints 20 can move away from each other to release the clamping of the flexible pipe section. After the flexible pipe section loses the clamping force, it can restore its deformation through its own material characteristics. Subsequently, the part in this guide pipe 17 will be discharged by gravity and fall into the fixture 11, forming the feeding of the part; Briefly, the clamping plates 20 at the four assembly positions work on the same principle. In the initial state, the clamping plates 20 at the four guide pipes 17 are all in the clamped state. Four external vibrating bowls respectively feed a corresponding part into their respective corresponding guide pipes 17, that is, one ejector pin, compression spring, outer sleeve, and locking block part are correspondingly installed in the four guide pipes 17. Subsequently, when the turntable 10 drives an empty fixture 11 to rotate clockwise to below the ejector pin assembly position 12, the clamping plate 20 at the ejector pin assembly position 12 will release, so that the ejector pin part in the guide pipe 17 at the ejector pin assembly position 12 can be fed into the fixture 11 by gravity. After the ejector pin part in this guide pipe 17 is output, the clamping plate 20 will clamp again. Subsequently, the external vibrating bowl feeds the next ejector pin part into the guide pipe 17 for temporary storage and prepares for feeding the next empty fixture 11. By circulating in this way, the principles at the other assembly positions are the same as those at the ejector pin assembly position 12 and will not be elaborated.

[0038] Referring to Figure 4 and Figure 5 As shown, the flexible pipe section is made of transparent rubber material; a detection head 21 is also installed on the bracket 16, which can be a visual detection probe (a well-known technology and will not be elaborated). It is mainly used to detect whether there are parts to be assembled inside when the flexible pipe section of the guide pipe 17 is clamped by the clamping plate 20. When the above solution is used: Since the flexible pipe section of the guide pipe 17 is made of transparent material, the detection head 21 can directly detect whether there are parts to be unloaded in this pipe section, so as to ensure that when the fixture 11 is located below each assembly position, there is a corresponding part in this fixture 11 or assembled on the part of this fixture 11.

[0039] Referring to Figure 6 、 Figure 7 and Figure 8 As shown, a guide plate 30 fixedly connected to the machine table 02 is also provided at the locking block assembly position 15; the guide plate 30 is arc-shaped, and the curvature matches the rotation trajectory of the turntable 10; a guide groove 31 extending to both sides is also opened on the bottom surface of the guide plate 30; an inclined guiding surface 32 is formed at the bottom of one side of the guide plate 30 adjacent to the outer sleeve assembly position 14, and the slope of the inclined guiding surface 32 gradually decreases in the clockwise direction. When the above solution is used: After the three parts of the ejector pin, compression spring, and outer sleeve are assembled together in any fixture 11, there may be a situation where the compression spring or outer sleeve on the ejector pin fails to be assembled to the specified position; for example, there are burrs and flash on the inner wall of the outer sleeve and it cannot be completely installed on the compression spring or ejector pin by gravity, or when processing a compression spring product with a longer length, the overall longer compression spring will hold up the outer sleeve assembled outside it and move up. In both cases, the outer sleeve will block the neck groove at the top of the ejector pin, affecting the assembly of the locking block into the neck groove in the next station. Therefore, as Figure 8As shown, after the thimble, compression spring, and outer sleeve on any fixture 11 are assembled together, the fixture 11 will support the three assembled parts and rotate clockwise with the turntable 10 past the material guiding plate 30. The formation of the guide groove 31 allows the entire thimble to pass through. At the same time, by means of the inclined guiding surface 32 of the material guiding plate 30 contacting and forming extrusion with the rib portion of the outer sleeve part, until the rib contacts the bottom horizontal plane of the material guiding plate 30, the entire outer sleeve can be moved downward to the specified position. Or when processing component products with relatively long compression spring parts, the compression spring can be forced to be compressed and contracted. By setting the inclined guiding surface 32, after the entire outer sleeve is axially moved downward to the specified position on the thimble, the neck groove position at the top of the thimble is in an exposed state, which is convenient for the subsequent assembly of the locking block into the neck groove of the thimble.

[0040] Referring to Figure 7 、 Figure 8 and Figure 10 As shown, a first blanking port 33 communicating with the guide groove 31 is also provided in the middle of the material guiding plate 30, and the first blanking port 33 is located directly below the locking block assembly position 15. When the above solution is used: Through the setting of the material guiding plate 30, the neck groove of the thimble is in an exposed state. At this time, it can be used through the first blanking port 33 reserved on the material guiding plate 30. When the thimble, compression spring, and outer sleeve on the fixture 11 are assembled and located directly below the locking block assembly position 15, it is convenient for the locking block in the guide pipe 17 at the locking block assembly position 15 to be output onto the thimble. The entire locking block falls into the neck groove of the thimble by gravity. At this time, the mutual assembly of the four parts is completed and a telescopic thimble assembly is formed.

[0041] Referring to Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown, two pressure strips 34 connected to the material guiding plate 30 are symmetrically arranged in the guide groove 31. The entire pressure strip 34 is located at one end of the material guiding plate 30 away from the outer sleeve assembly position 14, and is entirely downstream of the locking block assembly position 15. The pressure strip 34 is a component with a slanted bottom surface, and the higher end of this slanted surface is adjacent to the locking block assembly position 15. When the above solution is used: If there are burrs or flash on the inner ring surface or bottom surface of the locking block part, it will cause the locking block to be difficult to completely fall into the neck groove of the thimble by gravity, affecting the assembly between the four parts. To this end, when the fixture 11 supporting the above four parts rotates clockwise with the turntable 10, if the locking block can completely fall into the neck groove of the ejector, this fixture 11 can drive the assembled four parts of the ejector, the compression spring, the outer sleeve and the locking block to directly pass through the pressure strip 34; on the contrary, if the locking block does not completely fall into the neck groove of the ejector, during this rotation process, the locking block will contact and squeeze the bottom inclined surface of the pressure strip 34, so that the locking block overcomes the influence of the flash and burrs, is forced to move down and is assembled into the neck groove of the ejector, thereby ensuring the assembly effect and quality.

[0042] Reference Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, it also includes a clamping station 40 disposed downstream of the locking block assembly position 15, for clamping the locking block part to limit the position in the neck groove of the ejector part; The clamping station 40 includes a lifting block 41, a connecting block 42, a clamping block 43, a cone head 44 and an electric push rod 45; the lifting block 41 can be specifically realized by the composition of a cylinder, a slider and a slide rail to realize the lifting and lowering movement on the machine platform 02; there are multiple connecting blocks 42 distributed around the circumference, and this application takes three as an example, and they are fixed to the lifting block 41; each connecting block 42 is hinged with a clamping block 43 through a torsion spring shaft, and the three clamping blocks 43 together form a three-claw clamp; the lifting block 41 is slidably connected with a cone head 44, and the side of the cone head 44 is always in contact with one end of the clamping block 43 and forms an extrusion fit; the lifting block 41 is also equipped with an electric push rod 45, and the output shaft of the electric push rod 45 is connected to the cone head 44, and the cone head 44 is pushed to lift and lower through the electric push rod 45, so that the clamping block 43 is deflected around the hinge axis, thereby forming the clamping and releasing action of the clamp; When the above scheme is used: after the four parts of the ejector pin, the compression spring, the outer sleeve and the locking block are assembled, the locking block will be pressed and processed to prevent the locking block from being separated from the neck groove of the ejector pin, so as to obtain a complete telescopic ejector pin assembly; To this end, the assembly machine of the present application also involves a clamping station 40. After the four parts on any of the above-mentioned clamps 11 are assembled with each other, the turntable 10 will drive the clamp 11 to be located directly below the clamping station 40 and then stop rotating. Then the lifting block 41 can move downward and drive the three clamping blocks 43 to wrap around the outside of the locking block. Then, the electric push rod 45 drives the cone head 44 to move downward to squeeze one end of the three clamping blocks 43, so that the clamping blocks 43 deflect around the hinge axis, and use the ends of the three clamping blocks 43 away from the cone head 44 to jointly squeeze the surface of the locking block, so that three concave deformations are formed on the surface of the metal locking block (such as Figure 15 to achieve the locking effect between the locking block and the ejector neck groove.

[0043] Reference Figure 10 , Figure 11 and Figure 17As shown, when processing a compression spring with a relatively long length for the thimble assembly, if the convex rib on the side of the compression sleeve disengages from the bottom end surface of the material guide plate 30, the relatively long compression spring after compression will lose its restraint and push the outer sleeve and the locking block outside it away from the thimble, resulting in the clamping station 40 being unable to form a clamping limit between the locking block and the thimble neck groove; Therefore, one end of the material guide plate 30 away from the outer sleeve assembly position 14 also extends to directly below the clamping station 40, and a second blanking port 35 communicating with the guide groove 31 is formed at the top of the extending end. When the four assembled parts are located directly below the clamping station 40, as Figure 11 shown, the material guide plate 30 can still restrict the outer sleeve and its side convex rib, so that the relatively long compression spring part will not push the locking block and the outer sleeve part away from the thimble part, ensuring that the locking block is always located in the thimble neck groove, and then the locking block is limited in the thimble neck groove through the clamping station 40.

[0044] Referring to Figure 2 and Figure 3 shown, a blanking port 50 is penetrated through the machine table 02. There can be two blanking ports 50, which are respectively used to place qualified products and defective products. The blanking port 50 is entirely located outside the turntable 10 and between the thimble assembly position 12 and the clamping station 40; A material grabbing part 51 is also installed on the machine table 02. The material grabbing part 51 can be a combination of a multi-axis module and a gripper or a manipulator in the prior art, and a vision detector (as Figure 2 shown, the dotted line in the figure is the detection ray emitted by the detector) is also installed on the machine table 02, which is used to perform quality inspection on the assembled telescopic thimble (mainly to detect whether the locking block on the assembled telescopic thimble is missing. If it is missing, it is a defective product; if it is not missing, it is a qualified product). Subsequently, the telescopic thimble assembly assembled on the fixture 11 can be selectively grabbed into the corresponding blanking port 50 by the material grabbing part 51 to realize the blanking of the assembled telescopic thimble or the selection of defective products.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. Telescopic ejector pin automatic assembly machine, comprising a frame (01) and a machine table (02) provided on one side of the frame (01); characterized in that: It further includes a turntable (10) installed on the machine table (02); a plurality of jigs (11) evenly distributed circumferentially along the turntable (10) and fixed to the top of the turntable (10) for positioning and assembling parts; Along the rotation direction of the turntable (10), a thimble assembly position (12), a compression spring assembly position (13), a jacket assembly position (14) and a locking block assembly position (15) are successively and spacedly arranged on the machine table (02). Each assembly position is configured to sequentially assemble the corresponding parts onto the previous part to complete the assembly of the telescopic thimble assembly.

2. The telescopic ejector pin automatic assembly machine according to claim 1, wherein: Each of the assembly positions has the same structure, and each includes a bracket (16) connected to the machine table (02); and a guide pipe (17) connected to the bracket (16) and arranged vertically. The lower end of the guide pipe (17) forms a discharge port adjacent to the turntable (10), and the upper end forms a feed port connected to the outlet of the external vibrating disk.

3. The telescopic ejector pin automatic assembly machine according to claim 2, wherein: A partial pipe section of the guide pipe (17) adjacent to the discharge port is a flexible pipe section; An openable and closable clamping plate (20) is further installed on the bracket (16) for selectively clamping or releasing the flexible pipe section.

4. The telescopic ejector pin automatic assembly machine according to claim 3, wherein: The flexible pipe section is made of transparent rubber material; A detection head (21) is further installed on the bracket (16) for detecting whether there are parts to be assembled inside when the flexible pipe section of the guide pipe (17) is clamped.

5. The telescopic ejector pin automatic assembly machine according to claim 1, wherein: A guide plate (30) fixedly connected to the machine table (02) is further provided at the locking block assembly position (15); the guide plate (30) is arc-shaped, and the curvature matches the rotation track of the turntable (10); A guide groove (31) extending outwards on both sides is further opened on the bottom surface of the guide plate (30); An inclined guiding surface (32) is formed at the bottom of one side of the guide plate (30) adjacent to the jacket assembly position (14).

6. The telescopic ejector pin automatic assembly machine according to claim 5, characterized in that: A first blanking port (33) communicating with the guide groove (31) is further opened in the middle of the guide plate (30), and the first blanking port (33) is located directly below the locking block assembly position (15).

7. The telescopic ejector pin automatic assembly machine according to claim 6, characterized in that: Two pressing strips (34) are symmetrically arranged in the guide groove (31), and the pressing strips (34) are integrally located at one end of the guide plate (30) away from the jacket assembly position (14).

8. The telescopic ejector pin automatic assembly machine according to any one of claims 1, 5 or 6, characterized in that: It further includes a clamping station (40) arranged downstream of the locking block assembly position (15) for clamping and limiting the locking block part into the neck groove of the thimble part; The clamping station (40) includes a lifting block (41), a connecting block (42), a clamping block (43), a tapered head (44) and an electric push rod (45); The lifting block (41) is arranged on the machine table (02) in a liftable manner; a plurality of connecting blocks (42) are circumferentially distributed and fixedly connected to the lifting block (41); a clamping block (43) is hinged to each connecting block (42); a tapered head (44) is slidably connected to the lifting block (41), and the side surface of the tapered head (44) is always in contact with one end of the clamping block (43) and forms an extrusion fit; an electric push rod (45) is further installed on the lifting block (41), and the output shaft of the electric push rod (45) is connected to the tapered head (44).

9. The telescopic ejector pin automatic assembly machine according to claim 8, wherein: The material guiding plate (30) extends to directly below the clamping station (40) at one end away from the outer sleeve assembly position (14), and a second blanking opening (35) communicating with the guiding groove (31) is formed at the top of the extending end.

10. The telescopic ejector pin automatic assembly machine according to claim 9, characterized in that: A blanking opening (50) is penetratingly provided on the machine table (02). The blanking opening (50) is entirely located outside the turntable (10) and is located between the ejector pin assembly position (12) and the clamping station (40). A material grasping member (51) is further installed on the machine table (02) and is used to grasp the assembled telescopic ejector pin assembly on the fixture (11) into the blanking opening (50).

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