Coaxial tube positioning device

Abstract

The invention relates to the technical field of automobile air conditioner pipeline machining, and discloses a coaxial pipe positioning device which comprises a pipe rotating and clamping assembly used for clamping and rotating a coaxial pipe body, and a material blocking mechanism used for transversely positioning the coaxial pipe body. A profiling positioning groove matched with the reinforcing rib is formed in the outer diameter surface of the profiling positioning head, and the profiling positioning head is mounted on the profiling positioning block mounting seat through a spring; the shifting mechanism drives the profiling positioning head to move to be elastically attached to the coaxial pipe body, the pipe rotating clamping assembly rotates the coaxial pipe body, when a reinforcing rib in the coaxial pipe body is aligned with a profiling positioning groove of the profiling positioning head, the profiling positioning head slides into the coaxial pipe body, at the moment, the profiling positioning assembly triggers the positioning proximity switch, and the coaxial pipe body is clamped in the positioning proximity switch. And positioning is completed. And it is guaranteed that the positions of coaxial pipe bodies grabbed by the discharging robot are uniform, the stability of the positions of reinforcing ribs during punching is guaranteed, and therefore the angular stability during follow-up pipe bending is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air-conditioning pipeline processing, in particular to a coaxial tube positioning device. Background Art

[0002] The coaxial tube of the automobile air conditioning pipeline is a key component in the automobile air conditioning system and plays a vital role in the cooling and heating process. Structurally, it is usually composed of a coaxial inner tube and an outer tube, similar to the coaxial tube body and its internal reinforcement structure mentioned above. The inner tube is responsible for conveying key media such as refrigerants, and the outer tube plays a protective and auxiliary support function. The two work together to ensure the stable operation of the air conditioning system. Its material is mostly selected from metals or alloys with good corrosion resistance, thermal conductivity and a certain strength to adapt to the complex and changeable in-vehicle environment and the chemical properties of the refrigerant. In the actual operation of the automobile air conditioning system, the coaxial tube connects the core components such as the condenser, evaporator, and compressor. It is the "highway" for the circulation of refrigerant. When the air conditioning is turned on, the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure state and sends it to the condenser. The refrigerant dissipates heat and liquefies in the condenser, flows to the evaporator through the coaxial tube, vaporizes and absorbs heat in the evaporator, and achieves cooling in the car. During the whole process, the coaxial tube ensures efficient and stable transmission of the refrigerant.

[0003] Nowadays, the field of pipeline production is increasingly leaning towards automated assembly line equipment. Unlike manual equipment, automated production cannot flexibly locate the position of the internal reinforcement ribs of the coaxial tube by manual labor. As far as the current production site is concerned, the position is determined only by the plane at the end of the pipe, and no special positioning measures are taken for the reinforcement ribs. This situation has caused many subsequent problems. In the punching process, the punching position becomes difficult to control. It may appear at the angle between two sections of reinforcement ribs, or directly fall on the reinforcement ribs. In this way, when the subsequent bending process is performed, the product is very likely to have angular instability, which seriously affects the product quality. In view of this, there is an urgent need to develop a coaxial tube positioning device. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a coaxial tube positioning device, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the present invention is: a coaxial tube positioning device, including a frame, characterized in that the frame is provided with A pipe rotating clamping assembly is used to clamp and rotate the coaxial pipe body, wherein the coaxial pipe body is provided with reinforcing ribs inside; A material blocking mechanism, used for lateral positioning of the coaxial tube body; The profiling positioning assembly comprises a profiling positioning head, the outer diameter surface of the profiling positioning head is provided with a profiling positioning groove matched with the reinforcing rib, and the profiling positioning head is mounted on the profiling positioning block mounting seat through a spring; The shifting mechanism includes a contour positioning block cylinder, which pushes the contour positioning block mounting seat to drive the contour positioning head to move to elastically fit with the coaxial tube body. The pipe rotating clamping assembly rotates the coaxial tube body. When the reinforcing ribs in the coaxial tube body are aligned with the contour positioning grooves of the contour positioning head, the contour positioning head slides into the interior of the coaxial tube body. At this time, the contour positioning assembly triggers the positioning proximity switch to complete the positioning.

[0006] Preferably, the frame includes a frame cross beam, a right connecting plate is fixedly installed on the right front side of the frame cross beam, a main lower connecting plate is fixedly installed on the right front side of the frame cross beam through the right connecting plate, a shifting mechanism, a material blocking mechanism and a profiling positioning component are arranged on the lower side of the main lower connecting plate, a profiling positioning block mounting seat is arranged between the shifting mechanism and the profiling positioning component, a middle connecting plate is fixedly installed on the left side of the right connecting plate on the front side of the frame cross beam, a pipe rotating clamping assembly is fixedly installed on the front side of the frame cross beam through the middle connecting plate, and a positioning proximity switch is fixedly installed on the outer side of the profiling positioning block mounting seat.

[0007] Preferably, the reinforcing ribs are provided in a plurality of the same number, and the plurality of reinforcing ribs are distributed in a ring shape on the inner diameter surface of the coaxial tube body, and the contour positioning component is located on the right side of the coaxial tube body.

[0008] Preferably, the material blocking mechanism includes a material blocking plate, which is pushed by a cylinder to move and is used to position the coaxial tube body laterally; Specifically, the material blocking mechanism includes a transverse connecting plate 1, a cylinder 2, a longitudinal connecting plate 1, a cylinder 3, and a material blocking plate. The outer side of the transverse connecting plate 1 is fixedly mounted with the cylinder 2, the movable end of the cylinder 2 is fixedly mounted with the longitudinal connecting plate 1, the outer side of the longitudinal connecting plate 1 is fixedly mounted with the cylinder 3, and the movable end of the cylinder 3 is fixedly mounted with the material blocking plate; The shift mechanism includes a contour positioning block cylinder, a linear guide rail, a sliding block, and two transverse connecting plates. The contour positioning block cylinder is fixedly installed on the right side of the main lower connecting plate, the lower part of the main lower connecting plate is fixedly installed with a linear guide rail, the lower part of the linear guide rail is slidably installed with a sliding block, the lower part of the sliding block is fixedly installed with two transverse connecting plates, and the two transverse connecting plates are fixedly connected to the contour positioning block mounting seat.

[0009] Preferably, the second cylinder and the third cylinder are distributed in an "L" shape, the baffle plate is located between the coaxial tube body and the contour positioning assembly, and the sliding block is fixedly connected to the movable end of the contour positioning block cylinder.

[0010] Through the above technical scheme, during the use of the device, the movable end of cylinder two transmits power to longitudinal connecting plate one through longitudinal connecting plate one, and longitudinal connecting plate one can drive the baffle plate to move left and right through cylinder three, and cylinder three can push the baffle plate to move forward and backward, so as to horizontally position the coaxial tube body, and the contour positioning block cylinder can also push the baffle mechanism and the contour positioning assembly to move left and right through the sliding block, so that the lateral position of the coaxial tube body is successfully positioned.

[0011] Preferably, the contour positioning assembly includes a circular plate, a connecting column, a guide slot, a guide block, a limit plate, a contour positioning head, a contour positioning slot, and a spring; the contour positioning block mounting seat has a connecting column slidably mounted inside thereof, the outer diameter surface of the connecting column is provided with a guide slot, a guide block is provided at the connection between the guide slot and the contour positioning block mounting seat, a circular plate is fixedly mounted on one end of the connecting column away from the coaxial tube body, a limit plate is fixedly mounted on one end of the connecting column away from the circular plate, a contour positioning head is fixedly mounted on the outer side of the limit plate, a contour positioning slot is provided on the outer diameter surface of the contour positioning head, and a spring is provided on the outer side of the connecting column.

[0012] Preferably, the center lines of the circular plate, connecting column, limit plate and contour positioning head are located on the same horizontal line, the contour positioning grooves are provided in the same number, and the plurality of contour positioning grooves are distributed in a ring shape about the center line of the contour positioning head, the contour positioning head is a conical structure with a chamfered top end, a spring is provided between the limit plate and the contour positioning block mounting seat, and the guide block and the guide slide groove are slidably connected.

[0013] Through the above technical scheme, when the coaxial tube body reaches the specified position, the material baffle plate retracts, and the contour positioning block cylinder pushes the sliding block to move laterally. The spring can push the contour positioning head to move laterally through the limit plate until the contour positioning head is elastically fitted with the coaxial tube body, and the coaxial tube body is driven to rotate through the pipe rotating clamping assembly. When the reinforcing rib slides into the interior of the contour positioning groove, the contour positioning head will slide into the interior of the coaxial tube body. At this time, the contour positioning assembly triggers the positioning proximity switch, and the positioning proximity switch controls the pipe rotating clamping assembly to close. Then the contour positioning block cylinder drives the sliding block and the contour positioning assembly to retract, thereby completing the positioning of the coaxial tube body. The positioning device sends a signal that the robot allows material picking, and after waiting for the robot to complete material picking, the pipe rotating clamping assembly is turned on. At this point, a cycle of the positioning device ends.

[0014] Preferably, the pipe rotating clamping assembly includes a vertical ear seat, a clamping cylinder, a first connecting frame, a rotating shaft 1, a clamping connecting rod, a floating block, a clamping wheel rotating shaft, a clamping roller, a second connecting frame, a rotating motor, a rotating main synchronous wheel, a side frame, a rotating slave synchronous wheel, a rotating synchronous belt, a rotating shaft 2, a rotating driving wheel, a rotating shaft 3, and a rotating driven wheel. The vertical ear seat is fixedly mounted on the front side of the middle connecting plate, the front side of the vertical ear seat is rotatably mounted with a clamping cylinder, the movable end of the clamping cylinder is fixedly mounted with a floating block, the lower part of the middle connecting plate is fixedly mounted with the first connecting frame, the interior of the first connecting frame is rotatably mounted with the rotating shaft 1, the rotating shaft 2 and the rotating shaft 3, the inner side of the first connecting frame is connected with the rotating shaft 1 A clamping link is rotatably installed, and a clamping wheel shaft is rotatably installed in the recess of the clamping link, and a clamping roller is rotatably installed in the recess of the clamping link through the clamping wheel shaft, and the floating block is rotatably connected to the clamping link, and a second connecting frame is fixedly installed on the front side of the middle connecting plate, and a rotating motor is fixedly installed on the front side of the second connecting frame, and a rotating main synchronous wheel is driven and installed on the output shaft of the rotating motor, and a side frame is fixedly installed on the lower side of the first connecting frame, and a rotating slave synchronous wheel and a rotating driving wheel are rotatably installed between the side frame and the first connecting frame through the rotating shaft two, and a rotating driven wheel is rotatably installed on the outer side of the rotating shaft three, and a rotating synchronous belt is arranged between the rotating slave synchronous wheel and the rotating main synchronous wheel.

[0015] Preferably, the center lines of the rotating slave synchronous wheel and the rotating driving wheel are located on the same horizontal line, the rotating driving wheels are provided with three identical ones, and the cross-section of the first connecting frame is a "U"-shaped structure.

[0016] Through the above technical scheme, in the process of clamping and rotating the coaxial tube body, the active end of the clamping cylinder transmits power to the clamping connecting rod through the floating block, and the clamping connecting rod can be flipped around the rotating axis one. Through the mutual cooperation of the clamping roller, the rotating driven wheel and the rotating driving wheel, the coaxial tube body can be clamped. When waiting for the clamping roller, the rotating driven wheel and the rotating driving wheel to fit with the coaxial tube body, the rotating motor drives the rotating slave synchronous wheel to rotate through the rotating main synchronous wheel and the rotating synchronous belt. The rotating slave synchronous wheel drives the rotating driving wheel to rotate through the rotating axis two. The rotating driving wheel can drive the coaxial tube body between the clamping roller, the rotating driven wheel and the rotating driving wheel to rotate, and the positioning of the internal reinforcing ribs of the coaxial tube body can be completed.

[0017] Compared with the prior art, the present invention provides a coaxial tube positioning device, which has the following beneficial effects: the coaxial tube positioning device is provided with a shifting mechanism, a material blocking mechanism, a profiling positioning assembly and a pipe rotating clamping assembly, and the coaxial tube body is laterally positioned by the material blocking mechanism, and the rotating motor drives the rotating driving wheel to rotate by rotating the main synchronous wheel, the rotating synchronous belt, the rotating slave synchronous wheel and the rotating shaft, and the rotating driving wheel can drive the coaxial tube body between the clamping roller, the rotating driven wheel and the rotating driving wheel to rotate, so as to realize the position adjustment of the reinforcing ribs inside the coaxial tube body, and the spring can push the profiling positioning head to move laterally through the limit plate, and the profiling positioning head can elastically fit with the coaxial tube body, and after the reinforcing ribs slide into the interior of the profiling positioning groove, the profiling positioning head will slide into the interior of the coaxial tube body, so as to realize the positioning of the coaxial tube body, ensure that the positions of multiple coaxial tube bodies grasped by the blanking robot are consistent, ensure the stability of the position of the reinforcing ribs during punching, and thus improve the angular stability during subsequent bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ; Figure 4 This is a schematic diagram of the installation structure of the material blocking mechanism of the present invention; Figure 5 The schematic diagram of the installation structure of the contour positioning component of the present invention is shown in FIG. Figure 1 ; Figure 6 The schematic diagram of the installation structure of the contour positioning component of the present invention is shown in FIG. Figure 2 ; Figure 7 The schematic diagram of the installation structure of the contour positioning component of the present invention is shown in FIG. Figure 3 ; Figure 8 This is a schematic diagram of the installation structure of the shifting mechanism of the present invention; Fig. 9 The three-dimensional structure diagram of the pipe rotating clamping assembly of the present invention is shown in FIG. Figure 1 ; Fig.10 The three-dimensional structure diagram of the pipe rotating clamping assembly of the present invention is shown in FIG. Figure 2 .

[0019] Among them: 1. Frame beam; 2. Right connecting plate; 3. Main lower connecting plate; 4. Shifting mechanism; 401. Profiling positioning block cylinder; 402. Linear guide rail; 403. Sliding block; 404. Horizontal connecting plate 2; 5. Material blocking mechanism; 501. Horizontal connecting plate 1; 502. Cylinder 2; 503. Longitudinal connecting plate 1; 504. Cylinder 3; 505. Material blocking plate; 6. Middle connecting plate; 7. Profiling positioning block mounting seat; 8. Profiling positioning assembly; 801. Round plate; 802. Connecting column; 803. Guide slide; 804. Guide block; 805. Limiting plate; 806. Profiling positioning head; 807. Profiling positioning groove; 808. Spring; 9. Coaxial tube body; 10. Reinforcement ribs; 11. Pipe rotating clamping assembly; 1101. Vertical ear seat; 1102. Clamping cylinder; 1103. First connecting frame; 1104. Rotating axis one; 1105. Clamping connecting rod; 1106. Floating block; 1107. Clamping wheel rotating shaft; 1108. Clamping roller; 1109. Second connecting frame; 1110. Rotating motor; 1111. Rotating main synchronous wheel; 1112. Side frame; 1113. Rotating slave synchronous wheel; 1114. Rotating synchronous belt; 1115. Rotating axis two; 1116. Rotating driving wheel; 1117. Rotating axis three; 1118. Rotating driven wheel; 12. Positioning proximity switch. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: Figure 1-10 As shown, a coaxial tube positioning device provided by the present invention comprises a frame crossbeam 1, a right connecting plate 2 is fixedly installed on the right front side of the frame crossbeam 1, a main lower connecting plate 3 is fixedly installed on the right front side of the frame crossbeam 1 through the right connecting plate 2, a shifting mechanism 4, a material blocking mechanism 5 and a profiling positioning component 8 are arranged on the lower side of the main lower connecting plate 3, a profiling positioning block mounting seat 7 is arranged between the shifting mechanism 4 and the profiling positioning component 8, a middle connecting plate 6 is fixedly installed on the left side of the right connecting plate 2 on the front side of the frame crossbeam 1, a pipe rotating clamping component 11 is fixedly installed on the front side of the frame crossbeam 1 through the middle connecting plate 6, a coaxial tube body 9 is clamped inside the pipe rotating clamping component 11, a reinforcing rib 10 is arranged inside the coaxial tube body 9, and a positioning proximity switch 12 is fixedly installed on the outer side of the profiling positioning block mounting seat 7.

[0022] Specifically, a plurality of identical reinforcing ribs 10 are provided, and the plurality of reinforcing ribs 10 are distributed in a ring shape on the inner diameter surface of the coaxial tube body 9 , and the contour positioning component 8 is located on the right side of the coaxial tube body 9 .

[0023] Specifically, the material blocking mechanism 5 includes a transverse connecting plate 1 501, a cylinder 2 502, a longitudinal connecting plate 1 503, a cylinder 3 504, and a material blocking plate 505. The outer side of the transverse connecting plate 1 501 is fixedly mounted with the cylinder 2 502, the movable end of the cylinder 2 502 is fixedly mounted with the longitudinal connecting plate 1 503, the outer side of the longitudinal connecting plate 1 503 is fixedly mounted with the cylinder 3 504, and the movable end of the cylinder 3 504 is fixedly mounted with the material blocking plate 505; The shift mechanism 4 includes a profiling positioning block cylinder 401, a linear guide 402, a sliding block 403, and a second transverse connecting plate 404. The profiling positioning block cylinder 401 is fixedly installed on the right side of the main lower connecting plate 3. The lower part of the main lower connecting plate 3 is fixedly installed with a linear guide 402, and the lower part of the linear guide 402 is slidably installed with a sliding block 403. The lower part of the sliding block 403 is fixedly installed with a second transverse connecting plate 404. The second transverse connecting plate 404 is fixedly connected to the profiling positioning block mounting seat 7. The cylinder 2 502 and the cylinder 3 504 are distributed in an "L" shape. The baffle plate 505 is located between the coaxial tube body 9 and the profiling positioning assembly 8, the sliding block 403 and the movable end of the profiling positioning block cylinder 401 are fixedly connected. During the use of the device, the movable end of the cylinder two 502 transmits power to the longitudinal connecting plate one 503 through the longitudinal connecting plate one 503, and the longitudinal connecting plate one 503 can drive the baffle plate 505 to move left and right through the cylinder three 504. The cylinder three 504 can push the baffle plate 505 to move back and forth, and the coaxial tube body 9 can be horizontally positioned. The profiling positioning block cylinder 401 can also push the baffle mechanism 5 and the profiling positioning component 8 to move left and right through the sliding block 403. At this point, the lateral position positioning of the coaxial tube body 9 is successfully achieved.

[0024] Embodiment 2: Figure 2-10 As shown, as an improvement to the previous embodiment.

[0025] Specifically, the profiling positioning assembly 8 includes a circular plate 801, a connecting column 802, a guide slot 803, a guide block 804, a limiting plate 805, a profiling positioning head 806, a profiling positioning slot 807, and a spring 808. The connecting column 802 is slidably installed inside the profiling positioning block mounting seat 7. The outer diameter surface of the connecting column 802 is provided with a guide slot 803. The guide slot 803 and the profiling positioning block mounting seat 7 are connected with a guide block 804. The end of the connecting column 802 away from the coaxial tube body 9 is fixedly installed with a circular plate 801. The connecting column 802 away from the circular plate A limiting plate 805 is fixedly installed at one end of the plate 801, and a profiling positioning head 806 is fixedly installed on the outer side of the limiting plate 805. A profiling positioning groove 807 is provided on the outer diameter surface of the profiling positioning head 806. A spring 808 is provided on the outer side of the connecting column 802. The center lines of the circular plate 801, the connecting column 802, the limiting plate 805 and the profiling positioning head 806 are located on the same horizontal line. The profiling positioning grooves 807 are provided with the same number of profiling positioning grooves. The multiple profiling positioning grooves 807 are distributed in a ring shape about the center line of the profiling positioning head 806. The profiling positioning head 806 is a circular shape with a chamfered top. Conical structure, a spring 808 is arranged between the limit plate 805 and the profiling positioning block mounting seat 7, and the guide block 804 is slidably connected with the guide slide 803. The advantage is that when the coaxial tube body 9 reaches the specified position, the baffle plate 505 retracts, and the profiling positioning block cylinder 401 pushes the sliding block 403 to move laterally. The spring 808 can push the profiling positioning head 806 to move laterally through the limit plate 805 until the profiling positioning head 806 elastically fits with the coaxial tube body 9, and the coaxial tube body 9 is driven to rotate through the pipe rotating clamping assembly 11. When the reinforcing rib 10 slides into After the profiling positioning groove 807 is inside, the profiling positioning head 806 will slide into the interior of the coaxial tube body 9. At this time, the profiling positioning component 8 triggers the positioning proximity switch 12, which means that the positioning is completed. The positioning proximity switch 12 controls the pipe rotating clamping component 11 to close, and then the profiling positioning block cylinder 401 drives the sliding block 403 and the profiling positioning component 8 to retract, thereby completing the positioning of the coaxial tube body 9. The positioning device sends a signal that the robot allows material collection, and after waiting for the robot to complete the material collection, the pipe rotating clamping component 11 is opened. At this point, a cycle of the positioning device ends.

[0026] Embodiment 3: Figure 2-10 As shown, as an improvement to the previous embodiment.

[0027] Specifically, the pipe rotating clamping assembly 11 includes a vertical ear seat 1101, a clamping cylinder 1102, a first connecting frame 1103, a rotating shaft 1104, a clamping connecting rod 1105, a floating block 1106, a clamping wheel rotating shaft 1107, a clamping roller 1108, a second connecting frame 1109, a rotating motor 1110, a rotating main synchronous wheel 1111, a side frame 1112, a rotating slave synchronous wheel 1113, a rotating synchronous belt 1114, a rotating shaft 1115, a rotating driving wheel 1116, a rotating shaft 1117, and a rotating driven wheel 111 8. A vertical ear seat 1101 is fixedly mounted on the front side of the middle connecting plate 6. A clamping cylinder 1102 is rotatably mounted on the front side of the vertical ear seat 1101. A floating block 1106 is fixedly mounted on the movable end of the clamping cylinder 1102. A first connecting frame 1103 is fixedly mounted on the lower part of the middle connecting plate 6. A rotating shaft 1104, a rotating shaft 2 1115 and a rotating shaft 3 1117 are rotatably mounted inside the first connecting frame 1103. A clamping connecting rod 1105 is rotatably mounted on the inner side of the first connecting frame 1103 through the rotating shaft 1104. The clamping connecting rod 1106 is fixedly mounted on the movable end of the clamping cylinder 1102. A first connecting frame 1103 is fixedly mounted on the lower part of the middle connecting plate 6. A rotating shaft 1104, a rotating shaft 2 1115 and a rotating shaft 3 1117 are rotatably mounted inside the first connecting frame 1103. 5 is rotatably mounted with a clamping wheel shaft 1107, a clamping roller 1108 is rotatably mounted with the clamping wheel shaft 1107 in the recess of the clamping link 1105, the floating block 1106 is rotatably connected with the clamping link 1105, a second connecting frame 1109 is fixedly mounted on the front side of the middle connecting plate 6, a rotating motor 1110 is fixedly mounted on the front side of the second connecting frame 1109, a rotating main synchronous wheel 1111 is transmission-mounted on the output shaft of the rotating motor 1110, a side frame 1112 is fixedly mounted on the lower side of the first connecting frame 1103, and the side frame 1113 is fixedly mounted on the lower side of the first connecting frame 1103. A rotating slave synchronous wheel 1113 and a rotating driving wheel 1116 are rotatably installed between 112 and the first connecting frame 1103 through a rotating shaft 2 1115, a rotating driven wheel 1118 is rotatably installed on the outer side of the rotating shaft 3 1117, a rotating synchronous belt 1114 is arranged between the rotating slave synchronous wheel 1113 and the rotating master synchronous wheel 1111, the center lines of the rotating slave synchronous wheel 1113 and the rotating driving wheel 1116 are located on the same horizontal line, the rotating driving wheel 1116 is provided with the same three, and the cross-section of the first connecting frame 1103 is a "U"-shaped structure.The advantage is that, in the process of clamping and rotating the coaxial tube body 9, the active end of the clamping cylinder 1102 transmits power to the clamping link 1105 through the floating block 1106, and the clamping link 1105 can be turned around the rotating axis 1104, and the coaxial tube body 9 can be clamped by the mutual cooperation of the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116, and the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 are waiting for the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 to rotate. When the coaxial tube bodies 9 are in contact with each other, the rotating motor 1110 drives the rotating slave synchronous wheel 1113 to rotate by rotating the main synchronous wheel 1111 and the rotating synchronous belt 1114. The rotating slave synchronous wheel 1113 drives the rotating driving wheel 1116 to rotate through the rotating shaft 1115. The rotating driving wheel 1116 can drive the coaxial tube body 9 between the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 to rotate, thereby completing the positioning of the reinforcing ribs 10 inside the coaxial tube body 9.

[0028] Working principle: The movable end of the clamping cylinder 1102 transmits power to the clamping link 1105 through the floating block 1106, and the clamping link 1105 can be turned around the rotating shaft 1104. The coaxial tube body 9 can be clamped by the cooperation of the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116. The movable end of the cylinder 2 502 transmits power to the longitudinal connecting plate 1 503 through the longitudinal connecting plate 1 503. The longitudinal connecting plate 1 503 can drive the baffle plate 505 to move left and right through the cylinder 3 504. The cylinder 3 504 can push the baffle plate 505 to move forward and backward, and the coaxial tube body 9 can be horizontally positioned. The contour positioning block cylinder 401 can push the contour positioning assembly 8 to move left and right through the sliding block 403.

[0029] When in use, the loading robot loads the coaxial tube body 9 to the positioning device, and after the cylinder 2 502 and the cylinder 3 504 extend into position, the coaxial tube body 9 is positioned laterally. After the clamping mechanism clamps the coaxial tube body 9, the cylinder 2 502 and the cylinder 3 504 retract, and the coaxial tube body 9 is successfully positioned laterally. The contour positioning block cylinder 401 pushes the sliding block 403 to move laterally, and the spring 808 can push the contour positioning head 806 to move laterally through the limit plate 805 until the contour positioning head 806 elastically fits with the coaxial tube body 9, and the coaxial tube body 9 is driven to rotate through the pipe rotating clamping assembly 11, and when the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 fit with the coaxial tube body 9, the rotating motor 1110 drives the rotating slave synchronous wheel 1113 through the rotating main synchronous wheel 1111 and the rotating synchronous belt 1114. The rotating slave synchronous wheel 1113 drives the rotating driving wheel 1116 to rotate through the rotating shaft 1115. The rotating driving wheel 1116 can drive the coaxial tube body 9 between the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 to rotate, so as to complete the positioning of the reinforcing rib 10 inside the coaxial tube body 9. When the reinforcing rib 10 slides into the interior of the profiling positioning groove 807, the profiling positioning head 806 slides into the interior of the coaxial tube body 9. At this time, the profiling positioning component 8 touches the positioning proximity switch 12, which means that the positioning is completed. The proximity switch 12 controls the pipe rotating clamping assembly 11 to close, and then the profiling positioning block cylinder 401 drives the sliding block 403 and the profiling positioning assembly 8 to retract, thereby completing the positioning of the coaxial tube body 9. The positioning device sends a signal that the robot allows the material to be taken, and after the robot has finished taking the material, the pipe rotating clamping assembly 11 is opened. At this point, a cycle of the positioning device ends, which effectively avoids the problem of inaccurate positioning of the reinforcing rib 10 during subsequent punching. When the coaxial tube body 9 rotates for a certain period of time, the profiling positioning head 806 is not inserted into the interior of the coaxial tube body 9. The rotating motor 1110 drives the rotating slave synchronous wheel 1113 to rotate in the opposite direction by rotating the main synchronous wheel 1111 and the rotating synchronous belt 1114. The rotating slave synchronous wheel 1113 drives the rotating driving wheel 1116 to rotate in the opposite direction through the rotating shaft 1115. The rotating driving wheel 1116 can drive the coaxial tube body 9 between the clamping roller 1108, the rotating driven wheel 1118 and the rotating driving wheel 1116 to rotate in the opposite direction, and then continue to position the coaxial tube body 9 until the coaxial tube body 9 is positioned, thereby increasing the success rate of positioning and improving practicality.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coaxial tube positioning device, comprising a frame, characterized in that The rack is equipped with A pipe rotating clamping assembly (11) for clamping and rotating a coaxial pipe body (9), wherein a reinforcing rib (10) is provided inside the coaxial pipe body (9); A material blocking mechanism (5) for laterally positioning the coaxial tube body (9); A profiling positioning assembly (8) comprises a profiling positioning head (806), the outer diameter surface of the profiling positioning head (806) being provided with a profiling positioning groove (807) matching with the reinforcing rib (10), and the profiling positioning head (806) being mounted on the profiling positioning block mounting seat (7) via a spring (808); The displacement mechanism (4) comprises a profiling positioning block cylinder (401), wherein the profiling positioning block cylinder (401) pushes the profiling positioning block mounting seat (7) to drive the profiling positioning head (806) to move to elastically fit with the coaxial tube body (9), and the pipe rotating clamping assembly (11) rotates the coaxial tube body (9). When the reinforcing rib (10) in the coaxial tube body (9) is aligned with the profiling positioning groove (807) of the profiling positioning head (806), the profiling positioning head (806) slides into the interior of the coaxial tube body (9), and at this time, the profiling positioning assembly (8) triggers the positioning proximity switch (12) to complete the positioning.

2. A coaxial tube positioning device according to claim 1, characterized in that: The frame comprises a frame crossbeam (1), a right connecting plate (2) is fixedly installed on the right front side of the frame crossbeam (1), a main lower connecting plate (3) is fixedly installed on the right front side of the frame crossbeam (1) through the right connecting plate (2), a shifting mechanism (4), a material blocking mechanism (5) and a contour positioning component (8) are arranged on the lower side of the main lower connecting plate (3), a contour positioning block mounting seat (7) is arranged between the shifting mechanism (4) and the contour positioning component (8), a middle connecting plate (6) is fixedly installed on the front side of the frame crossbeam (1) and located on the left side of the right connecting plate (2), a pipe rotating clamping assembly (11) is fixedly installed on the front side of the frame crossbeam (1) through the middle connecting plate (6), and a positioning proximity switch (12) is fixedly installed on the outer side of the contour positioning block mounting seat (7).

3. A coaxial tube positioning device according to claim 1, characterized in that: The reinforcing ribs (10) are provided in a plurality of the same number, and the plurality of reinforcing ribs (10) are distributed in a ring shape on the inner diameter surface of the coaxial tube body (9), and the contour positioning component (8) is located on the right side of the coaxial tube body (9).

4. A coaxial tube positioning device according to claim 2, characterized in that: The material blocking mechanism (5) comprises a transverse connecting plate 1 (501), a cylinder 2 (502), a longitudinal connecting plate 1 (503), a cylinder 3 (504), and a material blocking plate (505); the cylinder 2 (502) is fixedly mounted on the outer side of the transverse connecting plate 1 (501); the longitudinal connecting plate 1 (503) is fixedly mounted on the movable end of the cylinder 2 (502); the cylinder 3 (504) is fixedly mounted on the outer side of the longitudinal connecting plate 1 (503); and the material blocking plate (505) is fixedly mounted on the movable end of the cylinder 3 (504); The displacement mechanism (4) comprises a profiling positioning block cylinder (401), a linear guide rail (402), a sliding block (403), and a second transverse connecting plate (404); the profiling positioning block cylinder (401) is fixedly mounted on the right side of the main lower connecting plate (3); the lower part of the main lower connecting plate (3) is fixedly mounted with a linear guide rail (402); the lower part of the linear guide rail (402) is slidably mounted with a sliding block (403); the lower part of the sliding block (403) is fixedly mounted with a second transverse connecting plate (404); the second transverse connecting plate (404) is fixedly connected to the profiling positioning block mounting seat (7).

5. A coaxial tube positioning device according to claim 4, characterized in that: The second cylinder (502) and the third cylinder (504) are arranged in an "L" shape, the material blocking plate (505) is located between the coaxial tube body (9) and the contour positioning assembly (8), and the sliding block (403) is fixedly connected to the movable end of the contour positioning block cylinder (401).

6. A coaxial tube positioning device according to claim 2, characterized in that: The profiling positioning assembly (8) comprises a circular plate (801), a connecting column (802), a guide slot (803), a guide block (804), a limiting plate (805), a profiling positioning head (806), a profiling positioning slot (807), and a spring (808). The profiling positioning block mounting seat (7) is slidably mounted with a connecting column (802), an outer diameter surface of the connecting column (802) is provided with a guide slot (803), and the guide slot (803) is rotatably mounted with the profiling positioning block mounting seat (7). A guide block (804) is provided at the connection, a circular plate (801) is fixedly mounted on one end of the connecting column (802) away from the coaxial tube body (9), a limiting plate (805) is fixedly mounted on one end of the connecting column (802) away from the circular plate (801), a contour positioning head (806) is fixedly mounted on the outer side of the limiting plate (805), a contour positioning groove (807) is provided on the outer diameter surface of the contour positioning head (806), and a spring (808) is provided on the outer side of the connecting column (802).

7. A coaxial tube positioning device according to claim 6, characterized in that: The center lines of the circular plate (801), the connecting column (802), the limiting plate (805) and the profiling positioning head (806) are located on the same horizontal line; the profiling positioning grooves (807) are provided in the same number; the plurality of profiling positioning grooves (807) are distributed in a ring shape about the center line of the profiling positioning head (806); the profiling positioning head (806) is a conical structure with a chamfered top; a spring (808) is provided between the limiting plate (805) and the profiling positioning block mounting seat (7); and the guide block (804) is slidably connected to the guide slide groove (803).

8. A coaxial tube positioning device according to claim 2, characterized in that: The pipe rotating clamping assembly (11) comprises a vertical ear seat (1101), a clamping cylinder (1102), a first connecting frame (1103), a rotating shaft (1104), a clamping connecting rod (1105), a floating block (1106), a clamping wheel rotating shaft (1107), a clamping roller (1108), a second connecting frame (1109), a rotating motor (1110), a rotating main synchronous wheel (1111), a side frame (1112), a rotating slave synchronous wheel (1113), a rotating synchronous belt (1114), a rotating shaft (1115), a rotating driving wheel (1116), and a rotating shaft (1117). (1117), a rotating driven wheel (1118), the vertical ear seat (1101) is fixedly mounted on the front side of the middle connecting plate (6), a clamping cylinder (1102) is rotatably mounted on the front side of the vertical ear seat (1101), a floating block (1106) is fixedly mounted on the movable end of the clamping cylinder (1102), a first connecting frame (1103) is fixedly mounted on the lower part of the middle connecting plate (6), a rotating shaft 1 (1104), a rotating shaft 2 (1115) and a rotating shaft 3 (1117) are rotatably mounted inside the first connecting frame (1103), and the first connecting frame (1103) is fixedly mounted on the lower part of the middle connecting plate (6). A clamping link (1105) is rotatably mounted on the inner side of the middle connecting plate (3) via a rotating shaft (1104), a clamping wheel rotating shaft (1107) is rotatably mounted in the recess of the clamping link (1105), a clamping roller (1108) is rotatably mounted in the recess of the clamping link (1105) via the clamping wheel rotating shaft (1107), the floating block (1106) is rotatably connected to the clamping link (1105), a second connecting frame (1109) is fixedly mounted on the front side of the middle connecting plate (6), a rotating motor (1110) is fixedly mounted on the front side of the second connecting frame (1109), the rotating A rotating main synchronous wheel (1111) is rotatably mounted on the output shaft of the rotating motor (1110); a side frame (1112) is fixedly mounted on the lower side of the first connecting frame (1103); a rotating slave synchronous wheel (1113) and a rotating driving wheel (1116) are rotatably mounted between the side frame (1112) and the first connecting frame (1103) via a second rotating shaft (1115); a rotating driven wheel (1118) is rotatably mounted on the outer side of the third rotating shaft (1117); and a rotating synchronous belt (1114) is provided between the rotating slave synchronous wheel (1113) and the rotating main synchronous wheel (1111).

9. A coaxial tube positioning device according to claim 8, characterized in that: The center lines of the rotating slave synchronous wheel (1113) and the rotating driving wheel (1116) are located on the same horizontal line, the rotating driving wheel (1116) is provided with three identical ones, and the cross-section of the first connecting frame (1103) is a "U"-shaped structure.

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