Concave forming high-precision positioning tool for precision tubular part

Abstract

The invention provides an inner concave forming high-precision positioning tool for precise tubular parts, and relates to the technical field of tubular part machining, the inner concave forming high-precision positioning tool comprises a lower supporting die, a telescopic model assembly, an upper stamping die and a limiting feeding mechanism, a positioning placing boss is arranged on one side of the lower supporting die, and the upper stamping die is provided with a stamping boss; the limiting feeding mechanism pushes the tubular part towards the positioning and placing boss, so that the tubular part penetrates through the positioning and placing boss to reach one end of the telescopic model assembly to abut against the first model core and is connected to the first model core in a sleeving mode. After the telescopic model assembly enables the second model core to stretch into the tubular part and the second model core and the first model core are closed to form a complete model core, the upper stamping die presses downwards to drive the stamping boss to stamp the tubular part under the support of the positioning placement boss, so that an inner groove is formed in the surface of the tubular part; according to the inner groove machining device, automatic machining of the inner groove of the tubular part can be effectively and accurately carried out, the labor cost is reduced, and meanwhile the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tubular component processing, and in particular to a high-precision positioning tool for inward concave molding of precision tubular components. Background Art

[0002] Tubular parts are a common structural part in daily life and are widely used. They can be used as brackets at the bottom of equipment (such as diesel generators, drone brackets, car bumpers, etc.) and can also be used for fitness equipment. In order to make the length and shape of the tubular parts adapt to the application scenarios, it is usually necessary to cut, stamp, bend and other steps for processing.

[0003] For tubular parts of some specifications, it is necessary to process an inwardly concave structure at one end of the tubular part as a positioning structure for quick-release insertion (quick-release insertion is to directly insert the tubular part into the mounting hole of the target structure, and the mounting hole of the target structure will have an elastic clamping end arranged perpendicular to the mounting hole. After the tubular part is inserted, the elastic clamping end will be clamped into this concave structure). Generally, such concave structures are processed by punching holes to punch out a hole on one side of the tubular part for easy clamping. However, due to the thickness of the tubular part, the wall of the punched hole is thinner and sharper. After the clamping end is clamped in, the tubular part can indeed be firmly fixed and cannot be used under stress. During use, the sharp hole wall will gradually cut into the clamping end, resulting in the hole wall cutting into the clamping end becoming an obstacle when the tubular component needs to be disassembled, and the tubular component is difficult to pull out; based on this, when processing this concave structure, the hole is replaced by an inner groove that does not penetrate the tube wall, that is, the tube wall is punched without cutting through, so that the tube wall forms a certain degree of concave, and this type of processing method is manually performed through multiple steps (the port of the processing end of the tubular component is slightly enlarged, and then the second model core is inserted into the port, and then the end inserted into the second model core is placed in the stamping die for stamping, and then the second model core is pulled out), the degree of automation is not high, the efficiency is not high, the labor cost is increased, and it is time-consuming and labor-intensive.

[0004] In order to ensure that the inner groove can be smoothly machined at the preset position of the tubular component and that other parts of the tubular component are not deformed, it is necessary to develop a positioning fixture for automated machining of the inner groove.

[0005] Therefore, it is necessary to propose a high-precision positioning tool for the inner concave molding of precision tubular parts to accurately perform automated processing of the inner grooves of the tubular parts, so as to reduce labor costs and improve processing efficiency. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a high-precision positioning tool for inner concave molding of precision tubular parts to accurately perform automated processing of inner grooves on tubular parts, so as to reduce labor costs and improve processing efficiency.

[0007] The present invention is achieved through the following technical solutions: The present invention proposes a high-precision positioning tool for concave molding of precision tubular parts, comprising a lower supporting mold, a telescopic model assembly, an upper stamping mold, and a limit feeding mechanism, wherein the upper stamping mold forms a longitudinal sliding connection with the lower supporting mold, the telescopic model assembly is fixedly connected to the center of the lower supporting mold, the telescopic model assembly is located between the lower supporting mold and the upper stamping mold, the upper stamping mold forms an elastic connection with the top of the telescopic model assembly, one side of the lower supporting mold is provided with a positioning and placing boss, one side of the upper stamping mold is provided with a stamping boss, the stamping boss and the positioning and placing boss are aligned up and down, one end of the telescopic model assembly is located on one end of the positioning and placing boss The limit feed mechanism is fixedly connected to the lower supporting mold and is located on the other side of the positioning and placing boss. When the tubular part is placed on the limit feed mechanism, the limit feed mechanism pushes the tubular part toward the positioning and placing boss, so that the tubular part passes through the positioning and placing boss and reaches one end of the telescopic model component to abut and sleeve on the first model core. After the telescopic model component extends the second model core into the tubular part and the second model core and the first model core are close together to form a complete model core, the upper stamping mold is pressed down to drive the stamping boss to stamp the tubular part under the support of the positioning and placing boss to form an inner groove on the surface of the tubular part.

[0008] Furthermore, the telescopic model assembly includes a first driving device, a fixed frame, a contact conductive mechanism, a sliding contact assembly, a circuit board, the first model core, and the second model core. The first driving device and the circuit board are fixedly connected to one end of the fixed frame, the contact conductive mechanism is fixedly connected to the fixed frame, the sliding contact assembly and the second model core are slidingly connected to the other end of the fixed frame, the first model core is fixedly connected to the other end of the fixed frame, the sliding contact assembly forms an elastic connection with the fixed frame in a sliding direction, the push rod of the first driving device is fixedly connected to one end of the second model core, the sliding contact assembly is located on one side of the first model core, and the sliding contact assembly One end of the first model core and the other end of the second model core are both facing the positioning and placement boss, one end of the first model core extends horizontally in the direction of the positioning and placement boss, the other end of the sliding contact component is facing the contact conductive mechanism and aligned with the contact conductive mechanism, the contact conductive mechanism and the first driving device are both electrically connected to the circuit board, when the tubular member passes through the positioning and placement boss and presses the sliding contact component so that the sliding contact component contacts the contact conductive mechanism to form a conductive loop, the first driving device pushes the second model core into the tubular member so that the second model core and the first model core are close together to form a complete model core to support the inner wall of the tubular member.

[0009] Furthermore, the sliding contact assembly includes a conductive connection block, an elastic member, and two sliding contact rods, one end of the conductive connection block faces the positioning boss and is located on one side of the first model core, the two sliding contact rods are respectively fixedly connected to both sides of the other end of the conductive connection block, one end of the two sliding contact rods are both slidingly connected to one end of the fixing frame, the other ends of the two sliding contact rods are respectively aligned with two ends of the contact conductive mechanism, one end of the elastic member is fixedly connected to the conductive connection block, and the other end of the elastic member abuts against one end of the fixing frame.

[0010] Furthermore, the contact conductive mechanism includes a mounting frame and two conductive contact members, the mounting frame is fixedly connected to the fixed frame, the mounting frame is made of insulating material, the two conductive contact members are respectively fixedly connected to the two ends of the mounting frame, the two conductive contact members are respectively aligned with the two sliding contact rods, and the two conductive contact members are both electrically connected to the circuit board.

[0011] Furthermore, the conductive contact piece includes a shell, a terminal, and an elastic contact piece. One end of the shell is fixedly connected to one end of the mounting frame, the terminal is fixedly connected to one side of the shell and is electrically conductive to the shell, the terminal is electrically connected to the circuit board through a conductive wire, one end of the elastic contact piece is fixedly connected to the other side of the shell and is electrically conductive to the shell, the other end of the elastic contact piece extends outward in an arc structure and is aligned with the sliding contact rod, and the shell, the terminal, and the elastic contact piece are all made of metal materials.

[0012] Furthermore, the telescopic model assembly also includes a double-sided rolling propulsion mechanism, which is fixedly connected to one end of the fixed frame, and is located between the sliding contact assembly and the positioning boss, and is electrically connected to the circuit board.

[0013] Furthermore, the double-sided rolling propulsion mechanism includes a first fixed plate, two rolling components, a second fixed plate, and a first distance sensor, one side of the first fixed plate is fixedly connected to one end of the fixed frame, one end of the two rolling components is fixedly connected to the first fixed plate, the two rolling components are inverted and located between the sliding contact component and the positioning and placement boss, the two ends of the second fixed plate are respectively rotatably connected to the other ends of the two rolling components, the two rolling components and the first distance sensor are electrically connected to the circuit board, a rolling groove is provided between the two rolling components, the rolling groove is aligned with the model core, and the first distance sensor is fixedly connected to the first fixed plate and faces the rolling groove.

[0014] Furthermore, the rolling assembly includes a first stepper motor and a first rolling wheel, the first rolling wheel is elastic, one end of the first stepper motor is fixedly connected to the first fixed plate, the first stepper motor is inverted and electrically connected to the circuit board, the rotating shaft of the first stepper motor passes through the first rolling wheel and is fixedly connected to the first rolling wheel, the rotating shaft of the first stepper motor is rotatably connected to one end of the second fixed plate, and the rolling groove is located between the two first rolling wheels.

[0015] Furthermore, the limit feeding mechanism includes a base, a supporting slide, a pressing and pushing mechanism, a control module, an inductive limit boss, and a lifting mechanism. The base is located on one side of the lower supporting mold, and the supporting slide, the inductive limit boss, the pressing and pushing mechanism, the control module, and the lifting mechanism are all fixedly connected to the upper surface of the base, the inductive limit boss and the lifting mechanism are located on the same straight line and aligned with the positioning and placement boss, the pressing and pushing mechanism and the supporting slide are respectively located on both sides of the line connecting the inductive limit boss and the lifting mechanism, the supporting slide is vertically arranged with the base, the pressing and pushing mechanism faces one side of the supporting slide, the pressing and pushing mechanism, the inductive limit boss, and the lifting mechanism are all electrically connected to the control module, and a feeding channel for accommodating tubular parts is provided between the pressing and pushing mechanism and the supporting slide, the feeding channel is located above the line connecting the inductive limit boss and the lifting mechanism, and the feeding channel is aligned with the model core.

[0016] Furthermore, the pressing and propulsion mechanism includes a support seat, a second driving device, and a guide wheel propulsion assembly. The second driving device and the guide wheel propulsion assembly are both electrically connected to the control module. The support seat is fixedly connected to the upper surface of the base, the second driving device is fixedly connected to the upper surface of the support seat, the push rod of the second driving device is fixedly connected to one side of the guide wheel propulsion assembly, and the other side of the guide wheel propulsion assembly faces the feed channel. A sliding groove is provided on one side of the support seat, and the bottom of the guide wheel propulsion assembly is accommodated in the sliding groove and is slidably connected to the groove wall of the sliding groove.

[0017] Beneficial effects of the present invention: The present invention adopts the cooperation of the lower supporting die and the upper stamping die, the telescopic model assembly is used as a mechanism to support the inside of the tubular part, and the limit feeding mechanism assists the tubular part to be pushed into the lower supporting die and the upper stamping die. During processing, the tubular part is placed on the limit feeding mechanism, and the limit feeding mechanism pushes the tubular part toward the positioning and placement boss, so that the tubular part passes through the positioning and placement boss to reach one end of the telescopic model assembly to abut and be sleeved on the first model core. At this time, the telescopic model assembly will extend the second model core into the tubular part. After the telescopic model assembly extends the second model core into the tubular part, so that the second model core and the first model core are close together to form a complete model core, the upper stamping die is pressed downward by an external stamping machine, driving the stamping boss to press the tubular part under the support of the positioning and placement boss. The part is stamped, and since the second model core and the first model core are close together to form a complete model core, which is inserted in the tubular part as a supporting mold for stamping, the tubular part can still maintain its original shape after stamping, but an inner groove is formed on the surface of a preset area of ​​the tubular part. After the stamping is completed, the upper stamping die is lifted, and the telescopic model assembly drives the second model core to contract, so that the second model core is separated from the tubular part, leaving the first model core in the tubular part, and the limiting feed mechanism lifts one end of the tubular part and drives it to retreat, so that the tubular part falls into the material storage frame to complete the automated processing of the tubular part; in summary, the high-precision positioning tooling for inward concave molding of precision tubular parts can effectively and accurately perform automated processing of inner grooves on tubular parts, reduce labor costs, and also improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the high-precision positioning tool for inward concave molding of precision tubular parts of the present invention; Figure 2 An exploded view of the high-precision positioning tool for concave molding of precision tubular parts of the present invention; Figure 3 It is a cross-sectional view of the high-precision positioning tool for concave molding of precision tubular parts of the present invention; Figure 4 It is a schematic diagram of a telescopic model assembly of a high-precision positioning tool for concave molding of a precision tubular part of the present invention; Figure 5 It is an exploded view of the telescopic model assembly of the high-precision positioning tooling for the concave molding of precision tubular parts of the present invention; Figure 6 It is a schematic diagram of the contact conductive mechanism of the high-precision positioning tool for the concave molding of precision tubular parts of the present invention; Figure 7 It is a schematic diagram of a double-sided rolling and pushing mechanism of a high-precision positioning tool for inward concave molding of precision tubular parts of the present invention; Figure 8It is a schematic diagram of the limiting feeding mechanism of the high-precision positioning tooling for the inward concave molding of precision tubular parts of the present invention.

[0019] The reference numerals are as follows: The lower supporting mold 1 is provided with a positioning boss 11, a tubular member 101, an inner groove 102, and a recessed structure 200; Telescopic model assembly 2, first model core 21A, second model core 21B, first driving device 22, fixing frame 23, connecting base 231, through slot 2311, contact conductive mechanism 24, mounting frame 241, conductive contact member 242, housing 2421, terminal 2422, elastic contact sheet 2423, sliding contact assembly 25, conductive connecting block 251, elastic member 252, sliding contact rod 253, circuit board 26, double-sided rolling propulsion mechanism 27, first fixing plate 271, rolling assembly 272, first stepping motor 2721, first rolling wheel 2722, second fixing plate 273, first distance sensor 274, rolling slot 275; Upper stamping die 3; Limit feeding mechanism 4, base 41, supporting slide 42, pressing and pushing mechanism 43, supporting seat 431, sliding groove 4311, second driving device 432, guide wheel pushing assembly 433, sliding frame 4331, second stepping motor 4332, driven rotating seat 4333, second rolling wheel 4334, synchronous belt 4335, control module 44, inductive limit boss 45, second distance sensor 451, supporting boss 452, mounting groove 4521, arc groove 4522, lifting mechanism 46, cylinder 461, pushing block 462. DETAILED DESCRIPTION

[0020] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Please refer to Figure 1-Figure 8The present invention proposes a high-precision positioning tool for concave molding of precision tubular parts, including a lower supporting mold 1, a telescopic model component 2, an upper stamping mold 3, and a limit feeding mechanism 4. The telescopic model component 2 and the limit feeding mechanism 4 are electrically connected to an external controller. The upper stamping mold 3 forms a longitudinal sliding connection with the lower supporting mold 1. The telescopic model component 2 is fixedly connected to the center of the lower supporting mold 1. The telescopic model component 2 is located between the lower supporting mold 1 and the upper stamping mold 3. The upper stamping mold 3 forms an elastic connection with the top of the telescopic model component 2. A positioning and placing boss 11 is provided on one side of the lower supporting mold 1, and a stamping boss 31 is provided on one side of the upper stamping mold 3. The stamping boss 31 is aligned with the positioning and placing boss 11 in an up-and-down manner. One end of the telescopic model component 2 is located at the positioning and placing boss 11. One side is facing the positioning and placement boss 11, the limiting feeding mechanism 4 is fixedly connected to the lower supporting mold 1 and is located on the other side of the positioning and placement boss 11, when the tubular member 101 is placed on the limiting feeding mechanism 4, the limiting feeding mechanism 4 pushes the tubular member 101 toward the positioning and placement boss 11, so that the tubular member 101 passes through the positioning and placement boss 11 to reach one end of the telescopic model component 2 to abut and be sleeved on the first model core 21A, after the telescopic model component 2 extends the second model core 21B into the tubular member 101 and the second model core 21B and the first model core 21A are close together to form a complete model core, the upper stamping mold 3 is pressed down, driving the stamping boss 31 to stamp the tubular member 101 under the support of the positioning and placement boss 11, so as to form an inner groove 102 on the surface of the tubular member 101.

[0022] In this embodiment, during the processing of the tubular member 101, the lower support mold 1 and the upper stamping mold 3 are used to cooperate, the telescopic model assembly 2 is used as a mechanism to support the inside of the tubular member 101, and the limit feeding mechanism 4 assists the tubular member 101 to be pushed into the lower support mold 1 and the upper stamping mold 3. During processing, the tubular member 101 is placed on the limit feeding mechanism 4, and the external controller issues a corresponding instruction to the limit feeding mechanism 4, and the limit feeding mechanism 4 pushes the tubular member 101 toward the positioning and placing boss 11, so that The tubular member 101 passes through the positioning and placement boss 11 to reach one end of the telescopic model component 2 to abut and be sleeved on the first model core 21A, that is, the tubular member 101 extends to the end and stops extending. At this time, the telescopic model component 2 will extend the second model core 21B into the tubular member 101. After the second model core 21B and the first model core 21A are closed together to form a complete model core 21, the upper stamping die 3 is pressed down by the external stamping machine, driving the stamping boss 31 to stamp the tubular member 101 under the support of the positioning and placement boss 11. During the stamping process, During the stamping process, the stamping boss 31 stamps the side wall of the preset area on the tubular member 101 from top to bottom. Since a recessed structure 200 is provided on the first model core 21A, the recessed structure 200 is located below the preset area to be stamped, and the second model core 21B and the first model core 21A are close together to form a complete model core inserted in the tubular member 101 as a stamping support mold, so that the tubular member 101 can still maintain its original shape after stamping, but an inner groove is formed on the surface of the preset area of ​​the tubular member 101. After the stamping is completed, the upper stamping mold 3 is lifted, The telescopic model component 2 drives the second model core 21B to contract, so that the second model core 21B is separated from the tubular member 101, leaving the first model core 21A in the tubular member 101. Since the tubular member 101 is provided with an inner groove at this time, and the inner groove is embedded in the groove of the first model core 21A, it is necessary to lift one end of the tubular member 101 before it can be pulled smoothly. The limit feeding mechanism 4 lifts one end of the tubular member 101 and drives it to retreat, so that the tubular member 101 falls into the material storage frame, so as to complete the automatic processing of the tubular member 101. In summary, the high-precision positioning tooling for inner concave molding of precision tubular parts can effectively and accurately perform automated processing of inner grooves on tubular parts, reducing labor costs and improving processing efficiency.

[0023] In this embodiment, the telescopic model assembly 2 includes a first driving device 22, a fixed frame 23, a contact conductive mechanism 24, a sliding contact assembly 25, a circuit board 26, a first model core 21A, and a second model core 21B. The first driving device 22 and the circuit board 26 are fixedly connected to one end of the fixed frame 23. The first driving device 22 is a cylinder. The contact conductive mechanism 24 is fixedly connected to the fixed frame 23. The sliding contact assembly 25 and the second model core 21B are both slidably connected to the other end of the fixed frame 23. The first model core 21A is fixedly connected to the other end of the fixed frame 23. Specifically, the other end of the fixed frame 23 The first model core 21A is fixedly connected to the connecting base 231, and the second model core 21B is located below the first model core 21A. The sliding contact component 25 is elastically connected to the fixing frame 23 in the sliding direction. The push rod of the first driving device 22 is fixedly connected to one end of the second model core 21B. The sliding contact component 25 is located on one side of the first model core 21A. One end of the contact component 25 and the other end of the second model core 21B are both facing the positioning and placing boss 11, and one end of the first model core 21A extends horizontally in the direction of the positioning and placing boss 11. The other end of the sliding contact component 25 is facing the contact conductive mechanism 24 and is aligned with the contact conductive mechanism 24. The contact conductive mechanism 24 and the first drive device 22 are electrically connected to the circuit board 26 through conductive wires. When supporting the tubular member 101, the tubular member 101 passes through the positioning and placing boss 11 under the drive of the limit feeding mechanism 4 and is sleeved on the first model core 21A. At the same time, the tubular member 101 also slides on the sliding member 101. The contact component 25 is pressed, causing the sliding contact component 25 to move backward. The sliding contact component 25 is a conductor. When the sliding contact component 25 moves backward and contacts the contact conductive mechanism 24 to form a conductive loop, the circuit board 26 receives the signal of the conductive loop and issues a corresponding operation instruction to the first drive device 22. The first drive device 22 pushes the second model core 21B into the tubular member 101, so that the second model core 21B and the first model core 21A are close together to form a complete model core 21 to support the inner wall of the tubular member 101. At this time, the upper stamping die 3 can stamp downward.

[0024] In this embodiment, the sliding contact assembly 25 includes a conductive connection block 251, an elastic member 252, and two sliding contact rods 253. One end of the conductive connection block 251 faces the positioning and placement boss 11 and is located on one side of the first model core 21A. The two sliding contact rods 253 are respectively fixedly connected to the other ends of the conductive connection block 251. One end of the two sliding contact rods 253 is slidably connected to one end of the fixing frame 23. The other ends of the two sliding contact rods 253 are respectively aligned with the two ends of the contact conductive mechanism 24. One end of the elastic member 252 is fixedly connected to the conductive connection block 251, and the other end of the elastic member 252 abuts against one end of the fixing frame 23. The conductive connection block 251 and the two sliding contact rods 253 are all made of metal materials. When the tubular member 101 presses the conductive connection block 251, the elastic member 252 is compressed, and the conductive connection block 251 moves backward, so that the two sliding contact rods 253 also move backward. When the two sliding contact rods 253 are respectively connected to After the two ends of the contact conductive mechanism 24 are in contact, the contact conductive mechanism 24 will form an electrical connection with the two sliding contact rods 253 and the conductive connecting block 251, so that the circuit composed of the sliding contact component 25, the contact conductive mechanism 24, and the circuit board 26 forms an energized circuit, and the electrical connection signal is transmitted back to the circuit board 26, and the circuit board 26 issues a corresponding operation instruction to the first drive device 22 to push the second model core 21B to extend. After the tubular member 101 releases the pressure on the conductive connecting block 251, the conductive connecting block 251 is reset by the elastic force of the elastic member 252, so that the two sliding contact rods 253 are separated from the conductive contact with the two ends of the contact conductive mechanism 24, that is, the energized circuit of the circuit composed of the sliding contact component 25, the contact conductive mechanism 24, and the circuit board 26 is disconnected, and the disconnection signal is transmitted back to the circuit board 26, and the circuit board 26 issues a corresponding operation instruction to the first drive device 22 to pull the second model core 21B back.

[0025] In this embodiment, the contact conductive mechanism 24 includes a mounting frame 241 and two conductive contact members 242. The mounting frame 241 is fixedly connected to the fixing frame 23. The mounting frame 241 is made of insulating material. The two conductive contact members 242 are respectively fixedly connected to the two ends of the mounting frame 241. The two conductive contact members 242 are respectively aligned with the two sliding contact rods 253. The two conductive contact members 242 are electrically connected to the circuit board 26 through conductive wires. When the tubular member 101 presses the conductive connection block 251, the two sliding contact rods 253 move backward and respectively make conductive contact with the two conductive contact members 242, so that the circuit formed by the two conductive contact members 242, the sliding contact assembly 25 and the circuit board 26 forms an energized circuit.

[0026] In this embodiment, the conductive contact member 242 includes a housing 2421, a terminal 2422, and an elastic contact piece 2423. One end of the housing 2421 is fixedly connected to one end of the mounting frame 241, the terminal 2422 is fixedly connected to one side of the housing 2421 and is electrically conductive to the housing 2421, the terminal 2422 is electrically connected to the circuit board 26 through a conductive wire, one end of the elastic contact piece 2423 is fixedly connected to the other side of the housing 2421 and is electrically conductive to the housing 2421, and the other end of the elastic contact piece 2423 is connected in an arc shape. The structure extends outward and is aligned with the sliding contact rod 253. The shell 2421, the terminal 2422, and the elastic contact piece 2423 are all made of metal materials. When the sliding contact rod 253 makes conductive contact with the conductive contact piece 242, in order to ensure effective contact, the elastic contact piece 2423 is provided as a component that contacts the sliding contact rod 253, and the terminal 2422 is provided with a threaded hole. When the conductive contact piece 242 is electrically connected to the circuit board 26, the conductive wire can be locked in the threaded hole by wrapping the screw around it.

[0027] In this embodiment, the telescopic model assembly 2 also includes a double-sided rolling propulsion mechanism 27, which is fixedly connected to one end of the fixed frame 23, and is located between the sliding contact assembly 25 and the positioning boss 11. The double-sided rolling propulsion mechanism 27 is electrically connected to the circuit board 26 through a conductive wire; when the tubular member 101 is pushed in, the double-sided rolling propulsion mechanism 27 acts as a mechanism that can increase the thrust of the tubular member 101 and prevent the tubular member 101 from rotating during advancement, so as to ensure that the tubular member 101 is smoothly advanced toward the sliding contact assembly 25.

[0028] In this embodiment, the double-sided rolling propulsion mechanism 27 includes a first fixed plate 271, two rolling components 272, a second fixed plate 273, and a first distance sensor 274. One side of the first fixed plate 271 is fixedly connected to one end of the fixed frame 23, one end of the two rolling components 272 is fixedly connected to the first fixed plate 271, and the two rolling components 272 are inverted and located between the sliding contact component 25 and the positioning and placing boss 11. The two ends of the second fixed plate 273 are respectively rotatably connected to the other ends of the two rolling components 272. 272, the first distance sensor 274 are both electrically connected to the circuit board 26, a rolling groove 275 is provided between the two rolling components 272, the rolling groove 275 is aligned with the model core 21, the first distance sensor 274 is fixedly connected to the first fixing plate 271 and faces the rolling groove 275; the first distance sensor 274 is an infrared distance sensor, when the tubular member 101 is pushed in, the first distance sensor 274 detects the change of the distance in the rolling groove 275, and then sends a signal back to the circuit board 26, and the circuit board 26 issues a feed instruction to the two rolling components The two rolling assemblies 272 rotate in the positive direction to roll the tubular member 101 toward the sliding contact assembly 25. After the tubular member 101 presses the sliding contact assembly 25 to form an electrical connection with the contact conductive mechanism 24, the circuit board 26 issues a stop command to the two rolling assemblies 272, and the two rolling assemblies 272 stop operating. At this time, the upper stamping die 3 stamps the tubular member 101. After the stamping is completed, the circuit board 26 issues a retraction command to the first drive device 22 and the two rolling assemblies. On the pressing assembly 272, the second model core 21B is driven back by the first driving device 22, and the two rolling assemblies 272 rotate in opposite directions toward each other. At the same time, the limiting feed mechanism 4 lifts and retracts the entry end of the tubular member 101. Under the action of the lifting force of the tubular member 101 and the rolling force of the two rolling assemblies 272, it retracts backward at an inclined upward angle. At this time, the retracting rotation speed of the two rolling assemblies 272 is greater than the feeding speed, so that the tubular member 101 can be quickly disengaged to facilitate the stamping of the next tubular member 101.

[0029] In this embodiment, the rolling assembly 272 includes a first stepper motor 2721 and a first rolling wheel 2722. The first rolling wheel 2722 is elastic and made of a soft material. One end of the first stepper motor 2721 is fixedly connected to the first fixed plate 271. The first stepper motor 2721 is inverted and electrically connected to the circuit board 26. The shaft of the first stepper motor 2721 passes through the first rolling wheel 2722 and is fixedly connected to the first rolling wheel 2722. The shaft of the first stepper motor 2721 is connected to the second fixed plate One end of 273 is rotatably connected, and the rolling groove 275 is located between the two first rolling wheels 2722; when the tubular member 101 is fed, one first stepper motor 2721 rotates forward, and the other first stepper motor 2721 rotates reversely, so as to respectively drive the two first rolling wheels 2722 to rotate forward and reversely, and when retreating, the first stepper motor 2721 that originally rotates forward is reversed, and the first stepper motor 2721 that originally rotates reversely is forward, so as to respectively drive the two first rolling wheels 2722 to rotate reversely and forward.

[0030] In this embodiment, the limit feeding mechanism 4 includes a base 41, a support slide 42, a pressing and pushing mechanism 43, a control module 44, an inductive limit boss 45, and a lifting mechanism 46. The base 41 is located on one side of the lower supporting mold 1. The support slide 42, the inductive limit boss 45, the pressing and pushing mechanism 43, the control module 44, and the lifting mechanism 46 are all fixedly connected to the upper surface of the base 41. The inductive limit boss 45 and the lifting mechanism 46 are located on the same straight line and aligned with the positioning placement boss 11. The inductive limit boss 45 includes a second distance sensor 451 and a support boss 452. The center of the support boss 452 is provided with a mounting groove 4521 and an arc groove 4522. The arc groove 4522 is used to fit with the outer side surface of the tubular member 101 to place and support the tubular member 101. The second distance sensor 451 is accommodated in the mounting groove 4521 and is vertically arranged upward. 1 is electrically connected to the control module 44, the second distance sensor 451 is an infrared distance sensor, the control module 44 is electrically connected to the external controller, the lifting mechanism 46 includes a cylinder 461 and a push block 462, the cylinder 461 is fixedly connected to the upper surface of the base 41, the push block 462 is fixedly connected to the push rod of the cylinder 461, the pressing and pushing mechanism 43 and the supporting slide 42 are respectively located on both sides of the line connecting the inductive limiting boss 45 and the lifting mechanism 46, the supporting slide 42 is vertically arranged with the base 41, the pressing and pushing mechanism 43 faces one side of the supporting slide 42, the pressing and pushing mechanism 43, the inductive limiting boss 45, and the lifting mechanism 46 are all electrically connected to the control module 44, and a feeding channel 47 for accommodating the tubular member 101 is provided between the pressing and pushing mechanism 43 and the supporting slide 42, the feeding channel 47 is located above the line connecting the inductive limiting boss 45 and the lifting mechanism 46, and the feeding channel 47 is aligned with the model core 21;After the tubular member 101 is placed in the feeding channel 47, the pressing and pushing mechanism 43 and the lifting mechanism 46 jointly support the tubular member 101. At this time, the height of the lifting mechanism 46 is consistent with the height of the pressing and pushing mechanism 43. After the second distance sensor 451 senses the change in distance, it returns a signal to the control module 44. The control module 44 issues a feeding command to the pressing and pushing mechanism 43. The pressing and pushing mechanism 43 presses the tubular member 101, and the tubular member 101 is clamped by the pressing and pushing mechanism 43 and the supporting slide 42. Since the surface of the supporting slide 42 is provided with a smooth surface, the tubular member 101 can slide when being pressed, and then the pressing and pushing mechanism 43 feeds the tubular member 101, so that the tubular member 101 moves in the direction of the positioning and placing boss 11. Feed until the tubular member 101 presses the sliding contact component 25 to form an electrical connection with the contact conductive mechanism 24, and the control module 44 issues a stop command to the pressing and pushing mechanism 43, and the pressing and pushing mechanism 43 stops operating. At this time, the pressing of the tubular member 101 is not withdrawn. After the stamping of the tubular member 101 is completed, the control module 44 issues a retraction command to the pressing and pushing mechanism 43, and the pressing and pushing mechanism 43 retracts the tubular member 101 and increases the retraction speed. At the same time, the control module 44 issues a lifting command to the lifting mechanism 46, and the lifting mechanism 46 lifts one end of the tubular member 101. Under the joint action of the lifting force and the retraction force, the tubular member 101 can be quickly disengaged, so that the next tubular member 101 can be quickly placed in the feeding channel 47. ;

[0031] In the present embodiment, the pressing and pushing mechanism 43 includes a support seat 431, a second driving device 432, and a guide wheel pushing assembly 433. The second driving device 432 and the guide wheel pushing assembly 433 are all electrically connected to the control module 44. The second driving device 432 is a cylinder. The support seat 431 is fixedly connected to the upper surface of the base 41. The second driving device 432 is fixedly connected to the upper surface of the support seat 431. The push rod of the second driving device 432 is fixedly connected to one side of the guide wheel pushing assembly 433. The other side of the guide wheel pushing assembly 433 faces the feed channel. A sliding groove 4311 is provided on one side of the support seat 431. The bottom of the guide wheel pushing assembly 433 is accommodated in the sliding groove 4311 and is slidably connected to the groove wall of the sliding groove 4311. After the tubular member 101 is placed in the feed channel 47, the control module 44 issues a pushing instruction to the second driving device 432, so that the second driving device 432 pushes The guide wheel propulsion assembly 433 moves in the direction of the feed channel 47. At the same time, the control module 44 issues a feed instruction to the guide wheel propulsion assembly 433, so that the guide wheel propulsion assembly 433 rotates. After the guide wheel propulsion assembly 433 contacts the tubular member 101, it can directly drive the tubular member 101 to feed in the direction of the positioning and placing boss 11. After the tubular member 101 presses the sliding contact assembly 25 to form an electrical connection with the contact conductive mechanism 24, the control module 44 issues a stop instruction to the guide wheel propulsion assembly 433, so that the guide wheel propulsion assembly 433 stops operating. At this time, the second drive device 432 does not retreat, so that the guide wheel propulsion assembly 433 still presses the tubular member 101. After the stamping of the tubular member 101 is completed, the control module 44 issues a retreat instruction to the guide wheel propulsion assembly 433, so that the guide wheel propulsion assembly 433 drives the tubular member 101 to retreat.The guide wheel propulsion assembly 433 includes a sliding frame 4331, a second stepper motor 4332, a driven rotating seat 4333, two second rolling wheels 4334, and a synchronous belt 4335. The back of the sliding frame 4331 is fixedly connected to the push rod of the second driving device 432, and the bottom of the sliding frame 4331 is slidably connected to the sliding groove 4311. The second stepper motor 4332 and the driven rotating seat 4333 are fixedly connected to the sliding frame 4331. The connecting line formed by the second stepper motor 4332 and the driven rotating seat 4333 is parallel to the feed channel 47. A first synchronous wheel is provided on the rotating shaft of the second stepper motor 4332. The rotating shaft of the driven rotating seat 4333 can rotate freely. A second synchronous wheel is provided on the rotating shaft of the driven rotating seat 4333. One end of the synchronous belt 4335 forms a transmission connection with the first synchronous wheel, and the other end of the synchronous belt 4335 forms a transmission connection with the second synchronous wheel. Transmission connection, one second rolling wheel 4334 is fixedly connected to the rotating shaft of the second stepper motor 4332, and the other second rolling wheel 4334 is fixedly connected to the rotating shaft of the driven rotating seat 4333. When the tubular member 101 needs to be fed, the control module 44 issues a forward rotation instruction to the second stepper motor 4332, and the second stepper motor 4332 rotates forward, and at the same time, the rotating shaft of the driven rotating seat 4333 is driven to rotate forward through the synchronous belt 4335, so that the two second rolling wheels 4334 rotate forward, driving the tubular member 101 to feed. When the tubular member 101 needs to be retracted, the control module 44 issues a reverse rotation instruction to the second stepper motor 4332, and the second stepper motor 4332 is reversed, and at the same time, the rotating shaft of the driven rotating seat 4333 is driven to reverse through the synchronous belt 4335, so that the two second rolling wheels 4334 are reversed, driving the tubular member 101 to retract. ;

[0032] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A high-precision positioning tool for concave molding of precision tubular parts, characterized in that: The invention comprises a lower supporting mold, a telescopic model component, an upper stamping mold, and a limiting feeding mechanism, wherein the upper stamping mold is connected to the lower supporting mold in a longitudinal sliding manner, the telescopic model component is fixedly connected to the center of the lower supporting mold, the telescopic model component is located between the lower supporting mold and the upper stamping mold, the upper stamping mold is elastically connected to the top of the telescopic model component, a positioning boss is provided on one side of the lower supporting mold, a stamping boss is provided on one side of the upper stamping mold, the stamping boss is aligned with the positioning boss in an up-and-down manner, one end of the telescopic model component is located on one side of the positioning boss and faces the positioning boss, and the The limit feeding mechanism is fixedly connected to the lower supporting die and is located at the other side of the positioning and placing boss. When the tubular part is placed on the limit feeding mechanism, the limit feeding mechanism pushes the tubular part toward the positioning and placing boss, so that the tubular part passes through the positioning and placing boss and reaches one end of the telescopic model assembly to abut and sleeve on the first model core. After the telescopic model assembly extends the second model core into the tubular part and the second model core and the first model core are close together to form a complete model core, the upper stamping die is pressed downward, driving the stamping boss to stamp the tubular part under the support of the positioning and placing boss, so as to form an inner groove on the surface of the tubular part.

2. The high-precision positioning tool for concave molding of precision tubular parts according to claim 1, characterized in that: The telescopic model assembly includes a first driving device, a fixed frame, a contact conductive mechanism, a sliding contact assembly, a circuit board, the first model core, and the second model core. The first driving device and the circuit board are fixedly connected to one end of the fixed frame, the contact conductive mechanism is fixedly connected to the fixed frame, the sliding contact assembly and the second model core are slidingly connected to the other end of the fixed frame, the first model core is fixedly connected to the other end of the fixed frame, the sliding contact assembly is elastically connected to the fixed frame in a sliding direction, the push rod of the first driving device is fixedly connected to one end of the second model core, the sliding contact assembly is located on one side of the first model core, and one end of the sliding contact assembly The first model core is configured to have a first end and a second end thereof facing the positioning and placement boss, one end of the first model core is horizontally extended in the direction of the positioning and placement boss, the other end of the sliding contact component is facing the contact conductive mechanism and is aligned with the contact conductive mechanism, the contact conductive mechanism and the first driving device are electrically connected to the circuit board, and when the tubular member passes through the positioning and placement boss and presses the sliding contact component so that the sliding contact component contacts the contact conductive mechanism to form a conductive loop, the first driving device pushes the second model core into the tubular member so that the second model core and the first model core are close together to form a complete model core to support the inner wall of the tubular member.

3. The high-precision positioning tool for concave molding of precision tubular parts according to claim 2, characterized in that: The sliding contact assembly includes a conductive connection block, an elastic member, and two sliding contact rods. One end of the conductive connection block faces the positioning boss and is located on one side of the first model core. The two sliding contact rods are respectively fixedly connected to the two sides of the other end of the conductive connection block. One end of the two sliding contact rods is slidably connected to one end of the fixing frame. The other ends of the two sliding contact rods are respectively aligned with the two ends of the contact conductive mechanism. One end of the elastic member is fixedly connected to the conductive connection block, and the other end of the elastic member abuts against one end of the fixing frame.

4. The high-precision positioning tool for concave molding of precision tubular parts according to claim 3, characterized in that: The contact conductive mechanism includes a mounting frame and two conductive contact members. The mounting frame is fixedly connected to the fixing frame, and the mounting frame is made of insulating material. The two conductive contact members are respectively fixedly connected to the two ends of the mounting frame, and the two conductive contact members are respectively aligned with the two sliding contact rods, and the two conductive contact members are both electrically connected to the circuit board.

5. The high-precision positioning tool for concave molding of precision tubular parts according to claim 4, characterized in that: The conductive contact piece includes a shell, a terminal, and an elastic contact piece. One end of the shell is fixedly connected to one end of the mounting frame, the terminal is fixedly connected to one side of the shell and is electrically conductive to the shell, the terminal is electrically connected to the circuit board through a conductive wire, one end of the elastic contact piece is fixedly connected to the other side of the shell and is electrically conductive to the shell, the other end of the elastic contact piece extends outward in an arc structure and is aligned with the sliding contact rod, and the shell, the terminal, and the elastic contact piece are all made of metal materials.

6. The high-precision positioning tool for concave molding of precision tubular parts according to claim 2, characterized in that: The telescopic model assembly also includes a double-sided rolling propulsion mechanism, which is fixedly connected to one end of the fixed frame, located between the sliding contact assembly and the positioning boss, and is electrically connected to the circuit board.

7. The high-precision positioning tool for concave molding of precision tubular parts according to claim 6, characterized in that: The double-sided rolling propulsion mechanism includes a first fixed plate, two rolling components, a second fixed plate, and a first distance sensor. One side of the first fixed plate is fixedly connected to one end of the fixed frame, one end of the two rolling components is fixedly connected to the first fixed plate, the two rolling components are inverted and located between the sliding contact component and the positioning and placement boss, the two ends of the second fixed plate are respectively rotatably connected to the other ends of the two rolling components, the two rolling components and the first distance sensor are electrically connected to the circuit board, a rolling groove is provided between the two rolling components, the rolling groove is aligned with the model core, and the first distance sensor is fixedly connected to the first fixed plate and faces the rolling groove.

8. The high-precision positioning tool for concave molding of precision tubular parts according to claim 7, characterized in that: The rolling assembly includes a first stepper motor and a first rolling wheel. The first rolling wheel is elastic. One end of the first stepper motor is fixedly connected to the first fixed plate. The first stepper motor is inverted and electrically connected to the circuit board. The rotating shaft of the first stepper motor passes through the first rolling wheel and is fixedly connected to the first rolling wheel. The rotating shaft of the first stepper motor is rotatably connected to one end of the second fixed plate. The rolling groove is located between the two first rolling wheels.

9. The high-precision positioning tool for concave molding of precision tubular parts according to claim 1, characterized in that: The limit feeding mechanism includes a base, a supporting slide, a pressing and pushing mechanism, a control module, an inductive limit boss, and a lifting mechanism. The base is located at one side of the lower supporting mold, and the supporting slide, the inductive limit boss, the pressing and pushing mechanism, the control module, and the lifting mechanism are all fixedly connected to the upper surface of the base, the inductive limit boss and the lifting mechanism are located on the same straight line and aligned with the positioning and placing boss, the pressing and pushing mechanism and the supporting slide are respectively located on both sides of the line connecting the inductive limit boss and the lifting mechanism, the supporting slide is vertically arranged with the base, the pressing and pushing mechanism faces one side of the supporting slide, the pressing and pushing mechanism, the inductive limit boss, and the lifting mechanism are all electrically connected to the control module, and a feeding channel for accommodating tubular parts is provided between the pressing and pushing mechanism and the supporting slide, the feeding channel is located above the line connecting the inductive limit boss and the lifting mechanism, and the feeding channel is aligned with the model core.

10. The high-precision positioning tool for concave molding of precision tubular parts according to claim 9, characterized in that: The pressing and propulsion mechanism includes a support seat, a second driving device, and a guide wheel propulsion assembly. The second driving device and the guide wheel propulsion assembly are both electrically connected to the control module. The support seat is fixedly connected to the upper surface of the base, the second driving device is fixedly connected to the upper surface of the support seat, the push rod of the second driving device is fixedly connected to one side of the guide wheel propulsion assembly, and the other side of the guide wheel propulsion assembly faces the feed channel. A sliding groove is provided on one side of the support seat, and the bottom of the guide wheel propulsion assembly is accommodated in the sliding groove and is slidably connected to the groove wall of the sliding groove.

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