Automated equipment for local annealing of pierced workpieces

Abstract

An automated device for partial annealing of workpieces with insertion holes includes a frame, a vibratory feeder, a cylinder, a gripper cylinder, a servo motor, a reducer, and a high-frequency induction heating device. Its key technical features are: the vibratory feeder is located on the top of the frame, and a straight feed channel is connected to the outlet end near the vibratory feeder; a straight vibratory feeder is located at the lower part of the straight feed channel; a material feeding mechanism and a rotary annealing mechanism are sequentially arranged on the top of the frame in the direction of the outlet end of the straight feed channel; material transfer mechanisms are correspondingly arranged on the left and right sides of the material feeding mechanism and the rotary annealing mechanism. This invention improves the processing efficiency and consistency of partial annealing of workpieces with insertion holes, reduces manual labor intensity, realizes unmanned operation of this process, improves production safety, reduces production safety hazards, and quantifies production process parameters through the high-frequency induction heating annealing method, thereby improving the consistency of part quality.

Description

Technical Field

[0001] This invention belongs to the field of structural design and application technology, and specifically relates to an automated device for local annealing of pierced workpieces. Background Technology

[0002] Electrical connectors are electronic components that connect the flow of electricity and electrical signals. The core component for realizing the transmission of electrical signals is the contact element, which is generally divided into pin contacts and socket contacts.

[0003] The socket workpiece is the socket contact component, made of tin bronze with a normal hardness of 180~230HV. The tail end of the socket workpiece needs to be crimped to the wire to ensure the stability of the mechanical contact. Excessive hardness during crimping can cause the socket to crack or be damaged. Therefore, the tail end of the socket needs to be locally annealed to reduce its hardness to 90~140HV, increasing the ductility of the part.

[0004] The partial annealing of the socket workpiece is a process of heating with an oxygen-acetylene flame. During processing, workers sit around the flame and manually assemble the socket onto the rotating fixture. After heating, the socket is manually removed. This method has the disadvantages of difficulty in quantitatively controlling the flame temperature, safety hazards due to workers being close to the fire source, low processing efficiency and consistency of partial annealing of the socket, inability to quantify production process parameters, and difficulty in ensuring consistent part quality. Summary of the Invention

[0005] The purpose of this invention is to provide an automated device for local annealing of pierced workpieces, in order to solve the problems in the background art.

[0006] This invention is a fully automatic device that can automatically feed, partially anneal, and automatically unload workpieces with holes, without the need for manual operation. The partial annealing process is safe and stable.

[0007] This invention is achieved through the following technical solution: an automated device for local annealing of workpieces with holes, comprising a frame, a vibratory feeder, a cylinder, a gripper cylinder, a servo motor, a reducer, and a high-frequency induction heating device. The key technical points are: the vibratory feeder is located on the top of the frame; a straight material channel is connected to the outlet end near the vibratory feeder; a straight vibratory feeder is located at the bottom of the straight material channel; a material feeding mechanism and a rotary annealing mechanism are sequentially arranged on the outlet end of the straight material channel and fixed to the top of the frame; and material transfer mechanisms are correspondingly arranged on the left and right sides of the material feeding mechanism and the rotary annealing mechanism.

[0008] The material shifting mechanism includes a material shifting base set on the top of the frame, a material shifting support column on the upper part of the material shifting base, and a material shifting mounting plate. A linear guide rail is set in the middle of the material shifting mounting plate, and a material shifting slider that can move horizontally left and right is set on the upper part of the linear guide rail. The edge of the material shifting slider near the linear material channel has a U-shaped notch corresponding to the outlet end of the linear material channel. A material shifting cylinder that drives the material shifting slider to move is also set on the material shifting mounting plate.

[0009] The material transfer mechanism includes a material transfer mechanism base set on the top of the frame; a material transfer mechanism support column is vertically set on the upper part of the material transfer mechanism base, and a vertically movable robot arm slide is set on the material transfer mechanism support column; a transfer robot arm is set on the side of the robot arm slide arm close to the rotary annealing mechanism, and a gripper cylinder that can move horizontally back and forth is set on the lower part of the transfer robot arm.

[0010] The rotary annealing mechanism includes an annealing mechanism base plate set on the top of the frame. An annealing mechanism support plate, an annealing mechanism mounting plate, an annular water tank, and a rotary insertion turntable are arranged sequentially on the upper part of the annealing mechanism base plate. On the upper surface of the rotary insertion turntable, near the edge, there are workpiece holes arranged circumferentially, corresponding to the annular water tank. A heating copper tube connected to a high-frequency induction heating device is set near the top of the rotary insertion turntable.

[0011] In order to buffer and limit the reciprocating motion of the sliding block, buffers are also provided at both ends of the linear guide.

[0012] In order to heat multiple workpieces with sockets simultaneously and improve heating efficiency, the heating copper tubes are arc-shaped and arranged on both sides of some workpiece hole positions.

[0013] To ensure that the rotating socket turntable rotates at a uniform speed, the rotating socket turntable is controlled to rotate by a servo motor and a reducer mounted on the annealing mechanism mounting plate.

[0014] To ensure the strength of the material and meet the requirements for non-metallic materials, the rotating socket turntable is made of epoxy fabric.

[0015] To ensure that the rotating jack can withstand temperatures of 600-700℃, a ceramic insulating ring is installed on the inside of the workpiece hole.

[0016] The beneficial effects of this invention are:

[0017] This invention can improve the efficiency and consistency of local annealing of socketed workpieces, reduce the intensity of manual labor, realize the unmanned operation of this process, improve production safety, reduce production safety hazards, and improve the consistency of part quality by quantifying production process parameters through high-frequency induction heating annealing method. Attached Figure Description

[0018] Figure 1 This is a simplified three-dimensional schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a simplified top view of the overall structure of the present invention;

[0020] Figure 3 This is a simplified three-dimensional schematic diagram of part of the structure of the present invention;

[0021] Figure 4 for Figure 3 A simplified enlarged diagram of part A in the middle;

[0022] Figure 5 This is a simplified three-dimensional schematic diagram of the material transfer mechanism of the present invention;

[0023] Figure 6 This is a simplified three-dimensional schematic diagram of the rotary annealing mechanism of the present invention;

[0024] Figure 7 This is a simplified three-dimensional schematic diagram of part of the structure of the present invention;

[0025] Figure 8 This is a simplified structural diagram of the insertion hole workpiece of the present invention.

[0026] The main components in the diagram are numbered as follows: 1. Frame; 2. Vibratory feeder; 201. Linear feeder; 202. Linear vibratory feeder; 3. Feeding mechanism; 301. Feeding base; 302. Feeding support; 303. Feeding mounting plate; 304. Linear guide rail; 305. Feeding slider; 306. U-shaped notch; 307. Feeding cylinder; 308. Buffer; 309; 4. Transfer mechanism; 401. Transfer mechanism base; 402. Transfer mechanism support; 403. Robotic arm slide; 404. Transfer mechanism. 405. Manipulator; 5. Gripper cylinder; 6. Rotary annealing mechanism; 7. Annealing mechanism base plate; 8. Annealing mechanism support plate; 9. Annealing mechanism mounting plate; 10. Annular water tank; 11. Rotary insertion turntable; 12. Workpiece hole position; 13. Servo motor; 14. Drain valve; 15. High-frequency induction heating device; 16. High-frequency induction heating output end; 17. Heating copper tube; 18. Inserted workpiece; 19. Partial annealing section; 10. Opening end of inserted workpiece.

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Detailed Implementation

[0028] The following combination Figure 1-8The present invention will be described in detail through specific embodiments. Example

[0029] This automated equipment for local annealing of drilled workpieces includes a frame 1, a vibratory feeder 2, a cylinder, a gripper cylinder 405, a servo motor, a reducer, and a high-frequency induction heating device 6. The frame provides support and mounting, housing mounting plates for electrical and pneumatic components, with the remaining space used for wiring. Operating switches, an air source treatment device, and a touchscreen mounting box are installed on the frame. The vibratory feeder is located on top of the frame and is used to move the insert workpiece 7 to be annealed to its outlet end. The insert workpiece is a tubular structure with a shorter upper part and a longer lower part, and a boss in the middle. The lower part is the open end 702 of the insert workpiece, and the upper part is the partially annealed part 701. A straight feed channel 201 is connected near the outlet end of the vibratory feeder. A straight feeder 202 is provided at the lower part of the straight feed channel. The width of the straight feed channel is greater than the diameter of the lower tubular part of the insert workpiece and smaller than the diameter of the boss part of the insert workpiece. Due to its own gravity, the insert workpiece will automatically turn to a vertical state during the movement of the straight feed channel, with the annealed part of the insert workpiece facing upwards. The conveyor of the vibratory feeder is arranged in an orderly manner and moved to the outlet end of the straight material channel. At the outlet end of the straight material channel, a material shifting mechanism 3 and a rotary annealing mechanism 5 are arranged in sequence and fixed on the top of the frame. The material shifting mechanism is used to separate the insertion workpieces at the outlet end of the straight material channel individually to the clamping station. The rotary annealing mechanism is used to partially anneal the insertion workpieces while rotating at a uniform speed. Material transfer mechanisms 4 are arranged on the left and right sides of the material shifting mechanism and the rotary annealing mechanism. The material transfer mechanism on one side is used to clamp and move the single insertion workpieces separated to the clamping station to the rotary annealing mechanism. The material transfer mechanism on the other side is used to clamp and move the insertion workpieces that have completed partial annealing on the rotary annealing mechanism to the finished product station.

[0030] The material shifting mechanism includes a material shifting base 301 mounted on the top of the frame, a material shifting support column 302 on the upper part of the material shifting base, and a material shifting mounting plate 303. A linear guide rail 304 is provided in the middle of the material shifting mounting plate, and a material shifting slider 305 that can move horizontally left and right is provided on the upper part of the linear guide rail. The edge of the material shifting slider near the linear material channel has a U-shaped notch 306 corresponding to the outlet end of the linear material channel. A material shifting cylinder 307 that drives the material shifting slider is also provided on the material shifting mounting plate. When the material shifting cylinder is extended and paused, the opening of the U-shaped notch is connected to the outlet end of the linear material channel. When the material shifting cylinder is retracted and paused, the U-shaped notch is located at the clamping position. In order to buffer and limit the reciprocating motion of the material shifting slider, buffers 308 are also provided at both ends of the linear guide rail.

[0031] The transfer mechanism is used for gripping, moving, and placing the workpiece with the insertion hole. It includes a transfer mechanism base 401 set on the top of the frame; a transfer mechanism support column 402 is vertically set on the upper part of the transfer mechanism base, and a vertically movable robot arm slide 403 is set on the transfer mechanism support column; a transfer robot arm 404 is set on the side of the robot arm slide near the rotary annealing mechanism, and a gripper cylinder that can move horizontally back and forth is set on the lower part of the transfer robot arm. The gripper cylinder is used to grip the workpiece with the insertion hole.

[0032] The rotary annealing mechanism includes an annealing mechanism base plate 501 set on the top of the frame. An annealing mechanism support plate 502, an annealing mechanism mounting plate 503, an annular water tank 504, and a rotating insertion plate 505 are sequentially arranged on the upper part of the annealing mechanism base plate. The annular water tank is used to completely immerse the lower part of the insertion workpiece placed in the workpiece hole 506 in its water to protect the lower part of the insertion workpiece from overheating. A drain valve 508 is also provided on the annealing mechanism mounting plate to control the water level in the annular water tank. To ensure material strength and meet non-metallic requirements, the rotating insertion turntable is made of epoxy fabric. Near the edge of the upper surface of the turntable, there are 72 workpiece holes arranged circumferentially, corresponding to the annular water reservoir. These holes are used to store the insertion workpieces placed by the gripper cylinders, arranged in an orderly circumferential pattern. To ensure uniform rotation of the turntable, its rotation is controlled by a servo motor 507 and a reducer mounted on the annealing mechanism mounting plate. To achieve a heat resistance of 600-700℃, ceramic insulating rings are installed inside the workpiece holes. Near the top of the turntable, a heating copper tube 602 connected to a high-frequency induction heating device is installed. This heating copper tube heats the insertion workpieces. To allow multiple insertion workpieces to be annealed simultaneously and improve annealing efficiency, the heating copper tube is arc-shaped and arranged on both sides of some of the workpiece holes. The annealing hardness of the insertion workpieces can be adjusted by regulating the power of the high-frequency induction heating device and controlling the rotation speed of the turntable.

[0033] The working process of this invention:

[0034] The workpiece to be annealed is placed inside the vibratory feeder, and under the action of the vibratory feeder, the workpiece moves to the straight feed channel. Under the action of the straight vibratory feeder, the annealing heating part of the workpiece is arranged vertically upwards, and the workpiece is transported to the U-shaped notch of the feed slider. The workpiece in the U-shaped notch is moved to the clamping station by the feed cylinder. The transfer mechanism near the clamping station clamps the workpiece at the clamping station through the gripper cylinder, and the clamped workpiece is placed into the feed channel by the U-shaped movement of the transfer robot. The workpiece is placed in the hole position of the rotating insertion turntable; during the rotation of the rotating insertion turntable, the insertion workpiece approaches the heating copper tube, and the heating copper tube heats and anneals the insertion workpiece through a high-frequency induction heating device. When the insertion workpiece rotates to a designated position close to the other side of the transfer mechanism, it leaves the heating copper tube; the gripper cylinder on the other side of the transfer mechanism clamps the insertion workpiece on the rotating insertion turntable, and through the U-shaped movement of the transfer robot, the clamped insertion workpiece is placed in the finished product station, thus achieving the purpose of this invention.

[0035] The main parts of this invention are all machined, with the mechanism's action achieved by a dedicated motor, cylinder, and vibratory feeder. The mechanical structure is stable, the operation is smooth, production efficiency is high, and maintenance is convenient. Furthermore, compared to existing processing methods, this invention provides an automated method for localized annealing of insertion holes. Firstly, it changes the original process of heating with an acetylene-oxygen mixture flame, requiring workers to sit around the flame and manually load and unload materials, thus avoiding the difficulty in quantifying and controlling the flame temperature and the safety hazards associated with workers approaching the heat source. A suitable process method for localized annealing using high-frequency induction heating was explored. A customized U-shaped heating coil is used for annular heating of the insertion holes. By changing the insertion hole's running speed and heating power, process parameters are adjusted to achieve the required annealing hardness. This equipment improves the processing efficiency and consistency of localized annealing of insertion holes, reduces manual labor intensity, achieves unmanned operation of this process, improves production safety, reduces production safety hazards, and, through high-frequency induction heating annealing, quantifies production process parameters, improving the consistency of part quality.

Claims

1. An automated device for local annealing of workpieces with holes, comprising a frame, a vibratory feeder, a cylinder, a gripper cylinder, a servo motor, a reducer, and a high-frequency induction heating device, characterized in that: The vibratory feeder is located on the top of the frame, and a straight material channel is connected to the outlet end near the vibratory feeder. A straight vibratory feeder is located at the bottom of the straight material channel. A feeding mechanism and a rotary annealing mechanism are sequentially arranged on the top of the frame in the direction of the outlet end of the straight material channel. Material transfer mechanisms are arranged on the left and right sides of the feeding mechanism and the rotary annealing mechanism respectively. The material shifting mechanism includes a material shifting base set on the top of the frame, a material shifting support column on the upper part of the material shifting base, and a material shifting mounting plate. A linear guide rail is set in the middle of the material shifting mounting plate, and a material shifting slider that can move horizontally left and right is set on the upper part of the linear guide rail. The edge of the material shifting slider near the linear material channel has a U-shaped notch corresponding to the outlet end of the linear material channel. A material shifting cylinder that drives the material shifting slider to move is also set on the material shifting mounting plate. The material transfer mechanism includes a material transfer mechanism base set on the top of the frame; a material transfer mechanism support column is vertically set on the upper part of the material transfer mechanism base, and a vertically movable robot arm slide is set on the material transfer mechanism support column; a transfer robot arm is set on the side of the robot arm slide arm close to the rotary annealing mechanism, and a gripper cylinder that can move horizontally back and forth is set on the lower part of the transfer robot arm. The rotary annealing mechanism includes an annealing mechanism base plate set on the top of the frame, and an annealing mechanism support plate, an annealing mechanism mounting plate, an annular water storage tank and a rotary insertion hole turntable are arranged sequentially on the upper part of the annealing mechanism base plate. Near the edge of the upper surface of the rotating socket turntable, there are workpiece holes arranged circumferentially, corresponding to the annular water storage tank; near the top of the rotating socket turntable, there is a heating copper tube connected to a high-frequency induction heating device.

2. The automated equipment for local annealing of socketed workpieces according to claim 1, characterized in that: Buffers are also provided at both ends of the linear guide.

3. The automated equipment for local annealing of socketed workpieces according to claim 1, characterized in that: The heating copper tubes are arc-shaped and arranged on both sides of some workpiece holes.

4. The automated equipment for local annealing of pierced workpieces according to claim 1, characterized in that: The rotating jack turntable is controlled to rotate by a servo motor and a reducer mounted on the annealing mechanism mounting plate.

5. The automated equipment for local annealing of pierced workpieces according to claim 1, characterized in that: The rotating socket turntable is made of epoxy fabric.

6. The automated equipment for local annealing of pierced workpieces according to claim 1, characterized in that: A ceramic insulating ring is provided on the inside of the hole in the workpiece.

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