Retractable ejector pin automatic assembly machine

Abstract

The present invention relates to the technical field of telescopic ejector processing, and in particular to an automatic assembly machine for telescopic ejector pins, comprising a frame and a machine platform arranged on one side of the frame; further comprising a turntable and a fixture, the turntable being rotatably mounted on the machine platform; the fixture comprising multiple fixtures that are evenly distributed along the circumference of the turntable and fixed to the top of the turntable for positioning and assembling parts; along the rotation direction of the turntable, the machine platform is sequentially provided with an ejector pin assembly position, a compression spring assembly position, a sleeve assembly position and a locking block assembly position, each assembly position being configured and configured to sequentially assemble a corresponding part onto the previous part to complete the assembly of the telescopic ejector assembly; through the setting of the turntable, a fixture can be sequentially rotated to directly below the four assembly positions, and through the cooperation of the assembly positions, the ejector pin can be first placed in an empty fixture and used as a base part for subsequent assembly, and then the remaining three parts, the compression spring, the sleeve and the locking block, can be sequentially assembled on this ejector pin to form the assembly of the telescopic ejector pin.

Description

Technical Field

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

[0002] The telescopic ejector is composed of an ejector pin, a compression spring, a jacket and a locking block, which are assembled one by one in sequence to form the telescopic ejector pin.

[0003] Currently, the assembly of telescopic ejectors is mostly done manually, with each step requiring a separate workstation. While simple, this method significantly limits production efficiency. Each manual assembly step is not only time-consuming but also significantly increases manufacturing costs. As production scale continues to expand, this traditional assembly model can no longer meet the needs of efficient production and cost savings, resulting in longer production lines and low workshop space utilization. Summary of the Invention

[0004] The present invention provides a telescopic ejector automatic assembly machine, which can improve the assembly efficiency of the telescopic ejector and takes up little equipment space. The specific scheme is as follows:

[0005] The telescopic ejector automatic assembly machine includes a frame and a machine platform arranged on one side of the frame; it also includes a turntable and a clamp, the turntable is rotatably mounted on the machine platform; the clamp has multiple components that are evenly distributed along the circumference of the turntable and fixed to the top of the turntable, and is used to position and assemble parts; along the rotation direction of the turntable, the machine platform is sequentially provided with an ejector assembly position, a compression spring assembly position, a sleeve assembly position, and a locking block assembly position, each assembly position is configured separately and the corresponding part is sequentially assembled to the previous part to complete the assembly of the telescopic ejector assembly.

[0006] Furthermore, each of the assembly positions has the same structure, including a bracket connected to the machine; and a material guide tube connected to the bracket and arranged vertically, the lower end of the material guide tube forming a discharge port adjacent to the turntable, and the upper end forming a feed port connected to the outlet of the external vibration plate.

[0007] Furthermore, the pipe section of the material guiding pipe adjacent to the material outlet is a flexible pipe section; and an openable and closable clamping plate is also installed on the bracket for selectively clamping or releasing the flexible pipe section.

[0008] Furthermore, the flexible pipe section is made of transparent rubber material; a detection head is also installed on the bracket to detect whether there are parts to be assembled inside the flexible pipe section of the material guide tube when it is clamped.

[0009] Furthermore, a material guide plate fixed to the machine is provided at the locking block assembly position; the material guide plate is arc-shaped, and the curvature matches the rotation trajectory of the turntable; the bottom surface of the material guide plate is also provided with guide grooves extending to both sides; an inclined guide surface is formed on the bottom of one side of the material guide plate adjacent to the outer sleeve assembly position.

[0010] Furthermore, a blanking port 1 connected to the guide groove is provided in the middle of the guide plate, and the blanking port 1 is located directly below the assembly position of the locking block.

[0011] Furthermore, two pressure strips are symmetrically arranged in the guide groove, and the pressure strips are located as a whole at one end of the guide plate away from the jacket assembly position.

[0012] Furthermore, it also includes a clamping station arranged downstream of the locking block assembly position, which is used to clamp the locking block part and limit it to the neck groove of the ejector part; the clamping station includes a lifting block, a connecting block, a clamping block, a cone head and an electric push rod; the lifting block is arranged on the machine platform in a liftable manner; there are multiple connecting blocks distributed around the circumference and fixedly connected to the lifting block; each connecting block is hinged with a clamping block; the lifting block is slidably connected to the cone head, and the side of the cone head is always in contact with one end of the clamping block to form an extrusion fit; the lifting block is also equipped with an electric push rod, and the output shaft of the electric push rod is connected to the cone head.

[0013] Furthermore, the guide plate extends away from one end of the jacket assembly position to just below the clamping station, and a second blanking opening communicating with the guide groove is formed at the top of the extended end.

[0014] Furthermore, a feed opening is provided on the machine platform, which is located on the outside of the turntable as a whole and between the ejector assembly position and the clamping station; a grabbing piece is also installed on the machine platform for grabbing the telescopic ejector assembly assembled on the fixture into the feed opening.

[0015] Compared with the prior art, the present invention can achieve at least the following beneficial effects:

[0016] By setting the turntable, a fixture can be rotated to the bottom of the four assembly positions in sequence. Through the cooperation of each assembly position, the ejector pin can be placed in an empty fixture first and used as the base part for subsequent assembly. Then, the remaining three parts, namely the compression spring, outer sleeve and locking block, can be assembled on this ejector pin in sequence to form the assembly of the retractable ejector pin.

[0017] By setting the clamping station, the surface of the metal locking block can be concave and deformed to achieve a locking effect between the locking block and the ejector neck groove;

[0018] By setting the guide plate, the outer sleeve can be moved downward as a whole to the specified position on the ejector pin, and the neck groove on the top of the ejector pin is exposed, which facilitates the subsequent assembly of the locking block into the neck groove of the ejector pin. At the same time, one end of the guide plate is extended and located directly below the clamping station to solve the problem of the long compression spring part pushing the locking block and outer sleeve parts away from the ejector parts, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 The figure is a schematic cross-sectional view of the assembled retractable ejector pin of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 3 Schematic diagram of the structure of each assembly position of the present invention.

[0023] Figure 4 Schematic diagram of the bracket and the material guide tube at each assembly position of the present invention.

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the axial side structure.

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the front view structure.

[0026] Figure 7 It is a structural schematic diagram of the material guide plate of the present invention.

[0027] Figure 8 This is a schematic diagram of the bottom structure of the material guide plate of the present invention.

[0028] Figure 9 Schematic diagram of the interior of the guide plate of the present invention.

[0029] Figure 10 This is a schematic structural diagram of the clamping station of the present invention.

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point A in .

[0031] Figure 12 This is a bottom view schematic diagram of the clamping station of the present invention.

[0032] Figure 13 Schematic diagram of the structure of the clamping block of the present invention.

[0033] Figure 14 This is a schematic diagram of a state in which a clamping block deflects and squeezes a locking block according to the present invention.

[0034] Figure 15 This is a schematic diagram of the state of the clamping station processing the locking block parts of the present invention.

[0035] Figure 16 Schematic diagram of the assembly sequence and positions of the various parts of the telescopic ejector of the present invention.

[0036] Figure 17 This is a schematic diagram of the position of the overlong compression spring component when it is assembled onto the ejector component according to the present invention.

[0037] Figure 18 Schematic diagram of the structure of the material guide tube of the present invention.

[0038] The accompanying drawings are numerals as follows:

[0039] 01. Frame; 02. Machine;

[0040] 10. Turntable; 11. Clamp; 12. Ejector assembly position; 13. Compression spring assembly position; 14. Jacket assembly position; 15. Locking block assembly position; 16. Bracket; 17. Material guide tube;

[0041] 20. Clamp; 21. Detection head;

[0042] 30. Guide plate; 31. Guide groove; 32. Inclined guide surface; 33. Blanking port 1; 34. Pressing strip; 35. Blanking port 2;

[0043] 40. Clamping station; 41. Lifting block; 42. Connecting block; 43. Clamping block; 44. Cone head; 45. Electric push rod;

[0044] 50. Feeding port; 51. Grabbing parts. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Please refer to Figure 1 As shown, the present invention provides a telescopic ejector automatic assembly machine, which is mainly used for assembling the telescopic ejector consisting of four parts: ejector, compression spring, outer sleeve and locking block. Figure 2The figure shows a machine frame 01 and a machine table 02 provided on one side of the machine frame 01; a turntable 10 and a fixture 11, wherein the turntable 10 is rotatably provided on the machine table 02, and the bottom end of the machine table 02 is equipped with a servo motor for driving the turntable 10 to rotate; the fixture 11 has multiple parts that are evenly distributed along the circumference of the turntable 10 and fixed to the top of the turntable 10, and the fixture 11 is specifically presented as a container with an open top, with a wide opening at the top and a narrow opening at the bottom. The opening is provided so that the ejector part is first inserted and positioned at the ejector assembly position 12, so that the ejector located in the fixture 11 is in a vertical state, and the ejector in this state can be easily assembled with subsequent parts; at the same time, Figure 3 As shown, along the clockwise rotation direction of the turntable 10, the machine platform 02 is provided with an ejector assembly position 12, a compression spring assembly position 13, a sleeve assembly position 14 and a locking block assembly position 15 at equal intervals. Each assembly position is configured separately and the corresponding part is assembled to the previous part in sequence until the four parts are assembled together to complete the assembly of the telescopic ejector assembly.

[0047] Can be combined Figure 3 and Figure 16 As shown, the specific assembly process of the above scheme is as follows:

[0048] S1. When any fixture 11 without a part placed therein is located directly below the ejector assembly position 12 as the turntable 10 rotates clockwise, the ejector assembly position 12 can first output the ejector part and insert it into the opening of the fixture 11 directly below it;

[0049] S2. The fixture 11 with the ejector part in a vertical state is placed. As the turntable 10 continues to rotate clockwise, it is located directly below the compression spring assembly position 13. The compression spring assembly position 13 can cover the ejector part in this fixture 11, thereby forming an assembly between the ejector and the compression spring part;

[0050] S3, the fixture 11 with the ejector pin and the compression spring parts is placed, and is located directly below the outer sleeve assembly position 14 as the turntable 10 continues to rotate clockwise. The outer sleeve assembly position 14 can cover the outer sleeve parts with the outer side of the compression spring, thereby forming an assembly between the ejector pin, the compression spring and the outer sleeve parts;

[0051] S4. The fixture 11 containing the ejector, compression spring, and outer sleeve is positioned directly below the locking block assembly position 15 as the turntable 10 continues to rotate clockwise. The locking block assembly position 15 can place the locking block component into the neck groove of the ejector component, thereby forming a complete assembly between the four components of the telescopic ejector;

[0052] In general, based on the clockwise rotation of the turntable 10 at equal angles, the present application can rotate a fixture 11 in sequence to the bottom of the four assembly positions. Through the cooperation of the assembly positions, the ejector pin can be placed in an empty fixture 11 first and used as the base part for subsequent assembly. Then, the remaining three parts, namely the compression spring, the outer sleeve and the locking block, can be assembled on the ejector pin in sequence to form the assembly of the telescopic ejector pin.

[0053] Reference Figure 3 、 Figure 4 and Figure 5 As shown, each assembly position has the same structure, including a bracket 16 connected to the machine 02; and a guide tube 17 connected to the bracket 16 and arranged vertically. The bracket 16 can be driven by an external cylinder to be raised and lowered in the vertical direction, so that the bracket 16 drives the guide tube 17 to move, so that the distance between the discharge port of the guide tube 17 and the clamp 11 on the turntable 10 is adjusted, so that the discharge port position of the guide tube 17 in each assembly position can be configured as needed; the four guide tubes 17 are respectively used to introduce the four parts of the ejector pin, the compression spring, the outer sleeve and the locking block. The lower end of the guide tube 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 vibration plate (such as Figure 2 As shown), the parts are loaded through the external vibration plate and after entering the guide tube 17, they are discharged from the outlet of the guide tube 17 into the fixture 11 by gravity; wherein, as Figure 18 As shown, the guide pipe 17 is specifically connected by a thick steel pipe, a thick hose and a thin hose in sequence from top to bottom. There is a guide rail for conveying parts on the vibration plate. The parts move to the tail end of the guide rail and before entering the thick steel pipe. The parts are specifically rushed into the thick steel pipe at the upper end of the guide pipe 17 by an external air gun and transition into the thin hose through the thick hose. The parts fall into the fixture 11 through the thin hose by gravity, forming a feeding effect. The above-mentioned feeding method is a well-known technology and will not be repeated here.

[0054] When the above solution is used: each assembly position is equipped with a corresponding vibration plate, and the vibration plate and the assembly position are transferred through the material guide tube 17. The four material guide tubes 17 sequentially guide the ejector pin, compression spring, outer sleeve and locking block one by one toward the clamp 11. The specific guide sequence steps can be shown in the above assembly process, so that the four parts are assembled together to form an automatic assembly of the telescopic ejector pin.

[0055] Reference Figure 4 and Figure 5 As shown, the section of the guide pipe 17 adjacent to the discharge port is a flexible pipe section; two opening and closing clamps 20 are also mounted on the bracket 16. The two clamps 20 can be connected by an external cylinder (not shown in the figure) to form a movement toward or away from each other, which is used to selectively clamp or release the flexible pipe section;

[0056] When the above solution is used: by giving the two clamping plates 20 the ability to open and close, the flexible tube section of the guide tube 17 can be clamped in advance to form a blockage for the discharge port of the guide tube 17, and then the corresponding part is transported into the guide tube 17 through the external vibration plate, and the part entering the guide tube 17 will not be directly discharged from the guide tube 17 by gravity. Instead, when the turntable 10 drives a designated clamp 11 to be located directly under the guide tube 17, the two clamping plates 20 can move away from each other to release the clamping of the flexible tube section. After the flexible tube section loses the clamping force, it can recover its deformation due to its own material properties. Then the part in the guide tube 17 will be discharged by gravity and fall into the clamp 11, forming the loading of the part.

[0057] In short, the principles of the splints 20 at the four assembly positions are the same. In the initial state, the splints 20 at the four guide tubes 17 are all in a clamped state, and the four external vibration disks respectively feed a corresponding part into their respective corresponding guide tubes 17, that is, each of the four guide tubes 17 is equipped with a corresponding ejector pin, a compression spring, a sleeve and a locking block part; then, when the turntable 10 drives an empty fixture 11 to rotate clockwise to the bottom of the ejector assembly position 12, the splint 20 on the ejector assembly position 12 will be released, so that the ejector part in the guide tube 17 in the ejector assembly position 12 will be fed into the fixture 11 by gravity. After the ejector part in the guide tube 17 is output, the splint 20 will clamp again, and then the external vibration disk will feed the next ejector part into the guide tube 17 for temporary storage, and prepare for the loading of the next empty fixture 11, and this cycle can be repeated. The principles of the remaining assembly positions are the same as those of the ejector assembly position 12, and will not be repeated here.

[0058] Reference Figure 4 and Figure 5 As shown, the flexible tube section is made of transparent rubber material; a detection head 21 is also mounted on the bracket 16, which can be a visual detection probe (this is a well-known technology and will not be described in detail), mainly used to detect whether there are parts to be assembled inside the flexible tube section of the guide tube 17 when it is clamped by the clamping plate 20;

[0059] When the above solution is in use: since the flexible tube section of the guide tube 17 is made of transparent material, the detection head 21 can directly detect whether there are parts to be unloaded in this tube section, thereby ensuring that when the fixture 11 is located under each assembly position, there is a corresponding part located in this fixture 11 or on a part assembled to this fixture 11.

[0060] Reference Figure 6 、 Figure 7 and Figure 8As shown, a guide plate 30 fixedly connected to the machine platform 02 is further 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; the bottom surface of the guide plate 30 is further provided with guide grooves 31 extending to both sides; an inclined guide surface 32 is formed on the bottom of one side of the guide plate 30 adjacent to the outer sleeve assembly position 14, and the inclined guide surface 32 gradually decreases in slope in the clockwise direction;

[0061] When the above solution is used: in any fixture 11, after the ejector, compression spring, and outer sleeve are assembled together, the compression spring on the ejector or the outer sleeve may not be assembled into the specified position; for example, there may be burrs and flash on the inner wall of the outer sleeve, which cannot be completely assembled onto the compression spring or ejector by gravity; or when processing a product with a long compression spring, the long compression spring as a whole will support the outer sleeve assembled on the outside and move upward. In both cases, the outer sleeve will block the neck groove at the top of the ejector, affecting the assembly of the locking block in the neck groove at the next workstation;

[0062] For this reason, Figure 8 As shown, after the three parts of the ejector, compression spring and sleeve on any clamp 11 are assembled together, the clamp 11 will support the three assembled parts as the turntable 10 rotates clockwise through the guide plate 30. The guide groove 31 is formed for the ejector to pass through as a whole, and at the same time, with the help of the inclined guide surface 32 of the guide plate 30, the rib part of the sleeve part is contacted and squeezed, until the rib contacts the bottom horizontal surface of the guide plate 30, the sleeve can be moved down to the specified position as a whole, or when processing component products with relatively long compression spring parts, the compression spring can be forced to be squeezed and contracted. The purpose is to make the sleeve move axially downward to the specified position on the ejector as a whole through the setting of the inclined guide surface 32, so that the neck groove position of the top of the ejector is exposed, which is convenient for the subsequent assembly of the locking block into the neck groove of the ejector.

[0063] Reference Figure 7 、 Figure 8 and Figure 10 As shown, the middle portion of the guide plate 30 is further provided with a blanking opening 33 communicating with the guide groove 31, and the blanking opening 33 is located directly below the locking block assembly position 15;

[0064] When the above solution is in use: due to the setting of the guide plate 30, the neck groove of the ejector is exposed. At this time, it can be used through the blanking opening 33 reserved on the guide plate 30. After the ejector, compression spring and outer sleeve are assembled on the clamp 11 and located directly below the locking block assembly position 15, the locking block in the guide tube 17 at the locking block assembly position 15 can be easily output to the ejector. The locking block as a whole falls into the neck groove of the ejector by gravity. At this time, the four parts are assembled with each other to form a telescopic ejector assembly.

[0065] Reference Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown, two pressure strips 34 connected to the guide plate 30 are symmetrically provided in the guide groove 31. The pressure strips 34 are located as a whole at the end of the guide plate 30 away from the jacket assembly position 14 and as a whole downstream of the locking block assembly position 15. The pressure strips 34 are components with an inclined bottom surface, and the higher end of the inclined surface is adjacent to the locking block assembly position 15.

[0066] When using the above solution: if there are burrs or flash on the inner ring surface or bottom surface of the locking block part, it will make it difficult for the locking block to fall completely into the neck groove of the ejector pin under gravity, affecting the assembly between the four parts;

[0067] 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, namely the ejector, compression spring, outer sleeve and 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 can overcome the influence of flash and burrs, be forced to move down and be assembled into the neck groove of the ejector, thereby ensuring the assembly effect and quality.

[0068] Reference Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 and Figure 15 As shown, it also includes a clamping station 40 arranged downstream of the locking block assembly position 15, which is used to clamp the locking block part to 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 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 to the 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; an electric push rod 45 is also installed on the lifting block 41, 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 move up and down by the electric push rod 45, thereby realizing the deflection of the clamping block 43 around the hinge axis, thereby forming the clamping and releasing action of the clamp;

[0069] When the above solution is used: after the four parts of the ejector, compression spring, outer sleeve and locking block are assembled, the locking block will be tightened and processed to prevent the locking block from falling out of the neck groove of the ejector, so as to obtain a complete telescopic ejector assembly;

[0070] 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 block 43 deflects around the hinge axis, and with the help of the end of the three clamping blocks 43 away from the cone head 44, the surface of the locking block is squeezed together, 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.

[0071] Reference Figure 10 、 Figure 11 and Figure 17 As shown, when processing the ejector assembly with a relatively long compression spring, if the ribs on the side of the pressing sleeve are out of contact with the bottom end surface of the guide plate 30, the relatively long compression spring will lose its restraint after compression, and its outer sleeve and locking block will be pushed away from the ejector, making it impossible for the clamping station 40 to form a clamping limit between the locking block and the ejector neck groove;

[0072] To this end, the guide plate 30 is further extended to the bottom of the clamping station 40 at one end away from the jacket assembly position 14, and a second blanking port 35 communicating with the guide groove 31 is formed on the top of the extended end, so that when the four parts assembled with each other are located directly below the clamping station 40, Figure 11 As shown, the guide plate 30 can still limit the outer sleeve and its side ribs, so that the longer compression spring part will not push the locking block and the outer sleeve part away from the ejector part, ensuring that the locking block is always located in the ejector neck groove, and then the locking block is limited to the ejector neck groove through the clamping station 40.

[0073] Reference Figure 2 and Figure 3 As shown, the machine 02 is provided with a feed opening 50, and two feed openings 50 can be provided, one for placing qualified products and the other for placing defective products. The feed opening 50 is located on the outside of the turntable 10 as a whole, and is located between the ejector assembly position 12 and the clamping station 40; the machine 02 is also provided with a material grabbing member 51, which can be a combination of a multi-axis module and a gripper in the prior art or a manipulator, etc., and the machine 02 is also provided with a visual inspection instrument (such as Figure 2 As shown in the figure, the dotted line is the detection ray emitted by the detector), which is used to perform quality inspection on the assembled telescopic ejector (mainly to detect whether the locking block on the telescopic ejector after assembly is missing. If it is missing, it is a defective product, and if it is not missing, it is a qualified product). Subsequently, the telescopic ejector assembly assembled on the clamp 11 can be selectively grabbed by the grabbing member 51 and inserted into the corresponding unloading port 50 to realize the unloading or defective selection of the assembled telescopic ejector.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A telescopic ejector automatic assembly machine, comprising a frame (01) and a machine platform (02) disposed on one side of the frame (01); characterized in that: Also includes, A turntable (10) is mounted on the machine (02); A plurality of fixtures (11) are evenly distributed along the circumference of the turntable (10) and fixed to the top of the turntable (10), and are used for positioning and assembling parts; Along the rotation direction of the turntable (10), the machine table (02) is provided with an ejector pin assembly position (12), a compression spring assembly position (13), a jacket assembly position (14) and a locking block assembly position (15) in sequence, and 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; A guide plate (30) fixed to the machine (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); The bottom surface of the guide plate (30) is further provided with guide grooves (31) extending toward both sides; The guide plate (30) is formed with an inclined guide surface (32) at the bottom of one side adjacent to the outer sleeve assembly position (14); The guide plate (30) is further provided with a blanking opening (33) in the middle thereof, which is in communication with the guide groove (31), and the blanking opening (33) is located directly below the locking block assembly position (15); Two pressure strips (34) are symmetrically arranged in the guide groove (31), and the pressure strips (34) are located as a whole at one end of the guide plate (30) away from the jacket assembly position (14); It also includes a clamping station (40) arranged 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) is liftably arranged on the machine platform (02); a plurality of connecting blocks (42) are distributed circumferentially and fixedly connected to the lifting block (41); a clamping block (43) is hingedly connected to each connecting block (42); a cone head (44) is slidably connected to the lifting block (41), and the side surface of the cone 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 also installed on the lifting block (41), and the output shaft of the electric push rod (45) is connected to the cone head (44).

2. The retractable ejector automatic assembly machine according to claim 1, characterized in that: Each of the assembly positions has the same structure, and includes a bracket (16) connected to the machine (02); and a material guide tube (17) connected to the bracket (16) and arranged vertically, wherein the lower end of the material guide tube (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 vibration plate.

3. The retractable ejector automatic assembly machine according to claim 2, characterized in that: The pipe section of the material guide pipe (17) adjacent to the material outlet is a flexible pipe section; The bracket (16) is also provided with an openable and closable clamping plate (20) for selectively clamping or releasing the flexible pipe section.

4. The retractable ejector automatic assembly machine according to claim 3, characterized in that: The flexible pipe section is made of transparent rubber material; The bracket (16) is also provided with a detection head (21) for detecting whether there are parts to be assembled inside the flexible pipe section of the material guide pipe (17) when the flexible pipe section is clamped.

5. The retractable ejector automatic assembly machine according to claim 1, characterized in that: The guide plate (30) extends away from one end of the jacket assembly position (14) to directly below the clamping station (40), and a second blanking opening (35) communicating with the guide groove (31) is formed at the top of the extended end.

6. The retractable ejector automatic assembly machine according to claim 5, characterized in that: The machine (02) is provided with a blanking port (50) running through it. The blanking port (50) is located on the outside of the turntable (10) as a whole and between the ejector assembly position (12) and the clamping position (40). The machine (02) is also provided with a material grabbing member (51) for grabbing the assembled telescopic ejector pin assembly on the fixture (11) into the material discharge port (50).

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