Defrost heater bend pipe device

Abstract

The utility model relates to defrosting heater production and processing technical field discloses a defrosting heater is bent pipe device, including machine table, first bending mechanism, second bending mechanism and third bending mechanism, first bending mechanism has first limit seat, first bending column, second bending mechanism has second limit seat, second bending column and third bending column, third bending mechanism has third limit seat, fourth bending column, second bending mechanism links with machine table through lifting mechanism, first bending mechanism links with machine table through translation mechanism, translation mechanism drives first bending mechanism and moves along the direction of approaching second bending mechanism, to make first pipe body bend in turn and form third bending part, second bending part and first bending part and with second pipe body bend through fourth bending column and form fourth bending part. The utility model integrates four bending processes on one device, saves the operation space required in the workshop, improves the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of defrost heater manufacturing and processing technology, and in particular to a pipe bending device for a defrost heater. Background Technology

[0002] The defrost heater uses modified magnesium oxide as filler and stainless steel as shell. After tube shrinking, the wiring terminals are sealed with special rubber compression and are bent according to the user's product requirements.

[0003] The company's main products are U-shaped defrosting heaters, such as... Figure 1 As shown, in order to adapt to the customer's installation requirements, there are four bending areas. Three of them are located at the first pipe body, in the direction away from the U-shaped bend, namely the first bending section bending in the first direction, the second bending section bending in the second direction, and the third bending section bending in the first direction. The third bending section after bending is set parallel to the second pipe body. The fourth bending area is located at the junction of the first and second pipe bodies, and is bent at 90° in the second direction.

[0004] Due to the special configuration of the aforementioned defrosting heater, the workshop typically uses a four-station method to process the four bending areas sequentially. Since the bending angles and directions of each bending section are different, four semi-automatic bending machines and corresponding limiting fixtures are required, which occupy a large area of ​​the workshop and require four operators to work together. The degree of automation is low, thus limiting work efficiency. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a bending device for defrosting heaters, which replaces the traditional four-station bending process. It completes four bending processes on one device, saving the operating space required in the workshop and improving processing efficiency.

[0006] The technical solution of this utility model is as follows: a tube bending device for a defrosting heater, comprising a machine base, a first bending mechanism, a second bending mechanism, and a third bending mechanism arranged sequentially along the length of the machine base. The first bending mechanism has a first limiting seat for inserting a U-shaped bend and a first bending column rotating in a first direction. The second bending mechanism has a second limiting seat for inserting a first tube body, a second bending column rotating in a second direction, and a third bending column rotating in a first direction. The third bending mechanism has a third limiting seat for inserting a first tube body and a second tube body, and a third bending column rotating in a first direction. The fourth bending column rotates in the second direction. The second bending mechanism is connected to the machine base via a lifting mechanism. The lifting mechanism drives the second bending mechanism to move downwards to separate the first tube from the second limiting seat. The first bending mechanism is connected to the machine base via a translation mechanism. The translation mechanism drives the first bending mechanism to move in a direction closer to the second bending mechanism, so that the first tube is successively bent into a third bending section by the third bending column, a second bending section into a second bending section, and a first bending section by the first bending column, and then bent together with the second tube into a fourth bending section by the fourth bending column. This device integrates three bending mechanisms on the machine base. By the sequential action of the three bending mechanisms, four bending processes are completed for the defrosting heater. Compared with the existing four-station processing method, the above-mentioned integrated device significantly reduces the operating space required for processing, and can be operated by a single person, saving labor costs, reducing the steps of transferring semi-finished products between stations, and effectively improving processing efficiency.

[0007] The first bending mechanism includes a first geared motor, a first rotating cylinder, and a first fixed column. The first geared motor is connected to a translation mechanism via a first motor base. The first fixed column is fixed on the first motor base. The first rotating cylinder is rotatably connected to the first fixed column and is driven by the output end of the first geared motor via a gear transmission component. The first limiting seat is fixed on the surface of the first fixed column and has a slot inside. The first bending column is fixed on the surface of the first rotating cylinder and is located on the side of the slot facing away from the first direction. The first motor base is provided with a first sensing component for detecting the rotation angle of the first rotating cylinder in the first direction.

[0008] The second bending mechanism includes a second geared motor, a second rotating cylinder, and a second fixed column. The second geared motor is connected to the lifting mechanism via a second motor base. The second fixed column is fixed on the second motor base. The second rotating cylinder is rotatably connected to the second fixed column and is driven by the output end of the second geared motor via a gear transmission component. The second limiting seat is fixed on the surface of the second fixed column, and the second limiting seat has a first channel. The second bending column and the third bending column are fixed circumferentially on the surface of the second rotating cylinder. The second bending column is located on the side of the first channel facing away from the second direction, and the third bending column is located on the side of the first channel facing away from the first direction. The second motor base is provided with a second sensing component for detecting the rotation angle of the second rotating cylinder in the second direction and a third sensing component for detecting the rotation angle in the first direction.

[0009] The third bending mechanism includes a third geared motor, a third rotating cylinder, and a third fixed column. The third geared motor is fixed on the machine base via a third motor seat. The third fixed column is fixed on the third motor seat. The third rotating cylinder is rotatably connected to the third fixed column and is driven by the output end of the third geared motor via a gear transmission component. The third limiting seat is fixed on the surface of the third fixed column and has a second channel inside. The fourth bending column is fixed on the surface of the third rotating cylinder and is located on the side of the second channel facing away from the second direction. The third motor seat is provided with a fourth sensing component for detecting the rotation angle of the third rotating cylinder in the second direction.

[0010] The translation mechanism includes a moving platform, a linear guide rail, a fourth reduction motor, and a rack. The linear guide rail and the rack are fixed side by side on the machine base along the length direction. The moving platform slides with the linear guide rail via a slider and is fixedly connected to the first bending mechanism. The fourth reduction motor is fixed on the moving platform via a fourth motor mount. The output end of the fourth reduction motor is equipped with a drive gear that meshes with the rack. The machine base is provided with a fifth sensing component for detecting the moving position of the moving platform.

[0011] The lifting mechanism includes a lifting seat, a lifting cylinder, and a vertical guide rail. The lifting seat is fixed on the machine base, and the vertical guide rail is fixed on both sides of the lifting seat and slides with the second bending mechanism via a slider. The cylinder body of the lifting cylinder is fixed on the lifting seat, and its output end is connected to the second bending mechanism.

[0012] A support base is fixed on the machine tool. One end of the support base extends above the second limiting seat to form a guide portion. A guide groove is provided on the guide portion for inserting the second tube. The support base provides support for the second tube. In particular, after the second limiting seat moves down due to the driving mechanism and disengages from the first tube, the first and second tubes move smoothly along the axial direction into the third limiting seat under the support and guidance of the guide groove, ensuring the continuity and accuracy of the processing.

[0013] The support base is equipped with a pressing assembly, which includes a swing cylinder, a cylinder seat, an L-shaped swing arm, and a pressing block. The cylinder seat is fixed to the support base, with one end extending to the outside of the guide groove to form a hinge, and the other end fixed to a bearing seat. The cylinder body of the swing cylinder is rotatably connected to the bearing seat via a rotating shaft. The output end of the swing cylinder is rotatably connected to the vertical end of the L-shaped swing arm. The hinge is rotatably connected to the middle of the L-shaped swing arm. The pressing block is fixed to the horizontal end of the L-shaped swing arm, and the bottom of the pressing block has a curved pressing groove. Driven by the swing cylinder, the curved pressing groove moves above the guide groove and surrounds the guide groove to form a third channel through which the second tube body can pass axially. The pressing block in the pressing assembly and the guide part surround to form a third channel. When bending the U-shaped bend of the first tube body, the second tube body is always located within the third channel, which can effectively prevent it from deviating from the guide groove due to the bending action of the first bending column.

[0014] In summary, the present invention has the following main advantages: This invention features a first bending mechanism, a second bending mechanism, and a third bending mechanism on a machine base. The first bending mechanism is capable of lateral translation, while the second bending mechanism is capable of vertical lifting. The U-shaped bend of the defrosting heater is placed into the first limiting seat of the first bending mechanism, and the first tube is placed into the second limiting seat. As the translation mechanism moves the first bending mechanism, the second bending mechanism drives the third bending column and the second bending column to rotate, bending the first tube to form the third bending section and the second bending section, respectively. After the lifting mechanism lowers the second bending mechanism, the second limiting seat disengages from the first tube, and then the first bending mechanism drives the first bending column to rotate. The first tube body is bent at the U-shaped bend to form the first bend. The translation mechanism continues to drive the defrosting heater to translate until the first tube body and the second tube body after three bends enter the third limiting seat together. The third bending mechanism drives the fourth bending column to rotate, forming the fourth bend at the connection end of the first and second tube bodies. Compared with the existing four-station processing method, this device uses three bending mechanisms integrated on the machine base to operate sequentially to complete the four-bending processing of the defrosting heater. The integrated device greatly reduces the operating space required for processing, and can be operated by a single person, saving labor costs and effectively improving processing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a U-shaped defrosting heater; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a top view of the present invention; Figure 4 This is a partial schematic diagram of the present invention from another angle; Figure 5 yes Figure 2 A magnified view of part A in the image; Figure 6 This is a schematic diagram of the structure of the first bending mechanism in this utility model; Figure 7 This is a schematic diagram of the second bending mechanism in this utility model; Figure 8 This is a schematic diagram of the third bending mechanism in this utility model; Figure 9 This is a schematic diagram of the structure of the pressing component in this utility model, wherein, Figure 9 (a) is a schematic diagram showing the initial state of the swing cylinder with the pressure block separated from the guide part. Figure 9 (b) is a schematic diagram of the third channel formed by the pressure block and the guide after the swing cylinder is activated.

[0016] Reference numerals: 100, defrosting heater; 101, first pipe body; 102, second pipe body; 103, U-shaped elbow; 104, first bend; 105, second bend; 106, third bend; 107, fourth bend; 1, machine base; 2, first bending mechanism; 201, first limit seat; 202, first bending column; 203, first geared motor; 204, first motor base; 205, first rotating cylinder; 206, first fixed column; 2 07. First photoelectric switch; 208. First sensing element; 209. Connecting seat; 3. Second bending mechanism; 301. Second limiting seat; 302. Second bending column; 303. Third bending column; 304. Second geared motor; 305. Second motor base; 306. Second rotating cylinder; 307. Second fixed column; 308. Second photoelectric switch; 309. Second sensing element; 310. Third photoelectric switch; 311. Third sensing element; 4. Third bending mechanism; 401. Third limit seat; 402. Fourth bending column; 403. Third geared motor; 404. Third motor base; 405. Third rotating cylinder; 406. Third fixed column; 407. Fourth photoelectric switch; 408. Fourth sensing plate; 5. Translation mechanism; 501. Moving platform; 502. Fourth geared motor; 503. Linear guide rail; 504. Rack; 505. Drive gear; 506. Fifth photoelectric switch; 507. Sixth photoelectric switch; 50 8. Fifth sensor plate; 6. Lifting mechanism; 601. Lifting seat; 602. Lifting cylinder; 603. Vertical guide rail; 7. Support seat; 701. Guide part; 702. Guide groove; 8. Pressing assembly; 801. Cylinder seat; 8011. Hinge part; 802. Swing cylinder; 803. L-shaped swing arm; 804. Bearing seat; 805. Pressure block; 8051. Curved pressure groove; 9. Outer ring gear; 10. Drive gear; 11. Slide groove; 12. Third channel. Detailed Implementation

[0017] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] Furthermore, in this utility model, directional terms such as "upper," "lower," "left," and "right" may be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly based on the orientation of the components in the accompanying drawings.

[0020] like Figure 2 and Figure 3 As shown, this utility model provides a tube bending device for a defrosting heater 100, including a machine base 1 and a first bending mechanism 2, a second bending mechanism 3, and a third bending mechanism 4 arranged sequentially along the length of the machine base 1. The first bending mechanism 2 has a first limiting seat 201 for inserting a U-shaped elbow 103 and a first bending column 202 rotating in a first direction. The second bending mechanism 3 has a second limiting seat 301 for inserting a first tube 101, a second bending column 302 rotating in a second direction, and a third bending column 303 rotating in the first direction. The third bending mechanism 4 has a third limiting seat 401 for inserting the first tube 101 and the second tube 102, and a fourth bending column 402 rotating in the second direction. Figure 3 As shown, the first direction is the counterclockwise direction from a top-down view, and the second direction is the clockwise direction from a top-down view. The second bending mechanism 3 is connected to the machine base 1 via the lifting mechanism 6. In the initial state, the second limiting seat 301 of the second bending mechanism 3 and the first limiting seat 201 of the first bending mechanism 2 are flush. The defrosting heater 100 is placed on the first limiting seat 201 and the second limiting seat 301. Driven by the lifting mechanism 6, the second bending mechanism 3 moves vertically downward to separate the first tube 101 from the second limiting seat 301. At this time, the defrosting heater 100 is only located within the first limiting seat 201. The first bending mechanism 2 is connected to the machine base 1 via the translation mechanism 5. The translation mechanism 5 drives the first bending mechanism 2 to move in a direction close to the second bending mechanism 3. As the translation mechanism 5 drives the second bending mechanism 3 to move, the first bending mechanism 2 moves in a direction close to the second bending mechanism 3. The first bending mechanism 2 moves horizontally, and the second bending mechanism 3 drives the third bending column 303 and the second bending column 302 to rotate, bending on the first tube 101 to form the third bending part 106 and the second bending part 105 respectively. After the lifting mechanism 6 drives the second bending mechanism 3 to descend, the second limiting seat 301 disengages from the first tube 101. Then, the first bending mechanism 2 drives the first bending column 202 to rotate, bending at the U-shaped bend 103 of the first tube 101 to form the first bending part 104. The translation mechanism 5 continues to drive the defrosting heater 100 to move horizontally until the first tube 101 and the second tube 102 after three bends enter the third limiting seat 401 together. The third bending mechanism 4 drives the fourth bending column 402 to rotate, forming the fourth bending part 107 at the connection end of the first tube 101 and the second tube 102.

[0021] This device integrates three bending mechanisms onto the machine base 1. Through the coordinated action of the three bending mechanisms, the translation mechanism 5, and the lifting mechanism 6, four bending processes of the defrosting heater 100 are completed in one station. Compared with the existing four-station processing method, the above-mentioned integrated device can significantly reduce the operating space required for processing, and can be operated by a single person, saving labor costs, reducing the time required for transferring semi-finished products between stations, and effectively improving processing efficiency.

[0022] Specifically, such as Figure 6 As shown, the first bending mechanism 2 includes a first reduction motor 203, a first rotating cylinder 205, and a first fixed column 206. The first reduction motor 203 is connected to the translation mechanism 5 via a first motor base 204. Specifically, the first reduction motor 203 and the first motor base 204 are located inside the machine base 1. A groove 11 parallel to the moving direction of the translation mechanism 5 is formed on the surface of the machine base 1. One side of the first motor base 204 is fixedly connected to the motor housing of the first reduction motor 203, and the other side is connected to the translation mechanism 5 through the groove 11 via a connecting seat 209. The first fixed column 206 is fixed on the first motor base 204, and the first rotating cylinder 205 is sleeved on the outside of the first fixed column 206. Its inner side is connected to the first fixed column 206 via a bearing. 06 Rotary connection, the outer side is connected to the output end of the first reduction motor 203 via a gear transmission component. Specifically, the gear transmission component includes a drive gear 10 fixedly connected to the output end of the first reduction motor 203 and an outer ring gear 9 fixed to the bottom of the first rotating sleeve. The drive gear 10 and the outer ring gear 9 mesh and transmit power. The first limiting seat 201 is fixed to the surface of the first fixing column 206, and the first limiting seat 201 has a slot. The slot is open on the side facing the second bending mechanism 3. The U-shaped elbow 103 of the defrosting heater 100 can be inserted into the slot from above. The first bending column 202 is fixed to the surface of the first rotating cylinder 205 and is located on the side of the slot facing away from the first direction, i.e. Figure 3As shown, the first bending column 202 is located on the side of the slot near the operating position. It is worth noting that the height of the first bending column 202 is less than the height of the second tube 102 of the defrosting heater 100 located in the slot. When the first reduction motor 203 rotates forward, it drives the first rotating sleeve to rotate around the first fixed column 206 under the cooperation of the gear transmission components. The first bending column 202 applies a bending force to the first tube 101. Under the limitation of the first limiting seat 201, a first bend 104 is formed at the U-shaped bend 103 of the first tube 101. More preferably, the first motor seat 204 is provided with a device for detecting the first rotating cylinder 20. 5. A first sensing component for rotating in a first direction, the first sensing component includes a first photoelectric switch 207 and a first sensing plate 208, wherein the first sensing plate 208 is fixed on the outer ring gear 9 at the bottom of the first rotating cylinder 205, and the first photoelectric switch 207 is fixed on the first motor base 204. After the first sensing plate 208 rotates with the first rotating cylinder 205 at a certain angle, it enters the sensing gap of the first photoelectric switch 207. The infrared light receiving path of the first photoelectric switch 207 is blocked, and then the controller outputs a signal to the first reduction motor 203. After receiving the signal, the first reduction motor 203 reverses and resets.

[0023] like Figure 7As shown, the second bending mechanism 3 includes a second reduction motor 304, a second rotating cylinder 306, and a second fixed column 307. The second reduction motor 304 is connected to the lifting mechanism 6 via a second motor base 305. The second fixed column 307 is fixed on the second motor base 305. The second rotating cylinder 306 is sleeved on the outside of the second fixed column 307. The inner side of the second rotating cylinder 306 is rotatably connected to the second fixed column 307 via a bearing, and the outer side is connected to the output end of the second reduction motor 304 via a gear transmission component. This gear transmission component also uses a drive gear 10 and an outer ring gear 9, and its installation method is the same as that of the gear transmission component of the first bending mechanism 2. The first reduction motor 203 and the lifting mechanism 6 are located together inside the machine base 1. The surface of the machine base 1 is provided with a through-hole for the second rotating cylinder 306, the second fixed base, and the corresponding gear transmission component to pass vertically. Preferably... The through hole is transversely connected to the aforementioned sliding groove 11 and is integrally formed. The second limiting seat 301 is fixed to the surface of the second fixing post 307, and the second limiting seat 301 has a first channel. The second bending post 302 and the third bending post 303 are circumferentially fixed to the surface of the second rotating cylinder 306. The second bending post 302 is located on the side of the first channel facing away from the second direction, and the third bending post 303 is located on the side of the first channel facing away from the first direction. Specifically, the second limiting seat 301 includes four first positioning posts, which are arranged in pairs and fixed side by side on the second fixing post 307. The gap between the two sets of first positioning posts is the first channel. It is worth noting that the height of the first positioning posts and the height of the second bending post 302 and the third bending post 303 are all less than the height of the second tube 102 located in the defrosting heater 100. Figure 2As shown, the third bending column 303 is located on the side of the first channel near the operating station, while the corresponding second bending column 302 is located on the other side of the second channel. When the second reduction motor 304 rotates forward, it drives the second rotating sleeve to rotate around the second fixed column 307 under the cooperation of the gear transmission component. The third bending column 303 applies a bending force to the first tube 101. Under the limitation of the first positioning column, the first tube 101 forms a third bending part 106 at the third bending position. The translation mechanism 5 drives the first bending mechanism 2 to move forward, thereby moving the second bending position of the first tube 101 into the first channel. After resetting, the second reduction motor 304 reverses, and the second bending column 302 applies a bending force to the first tube 101 to form a second bending part 105. Similarly, A second sensing component for detecting the rotation angle of the second rotating cylinder 306 in a second direction and a third sensing component for detecting the rotation angle in a first direction are provided on the second motor base 305. The second sensing component includes a second sensing plate 309 fixed to the bottom of the second rotating cylinder 306 and a second photoelectric switch 308 fixed to the second motor base 305. The third sensing component includes a third sensing plate 311 fixed to the bottom of the second rotating cylinder 306 and a third photoelectric switch 310 fixed to the second motor base 305. The second sensing plate 309 cooperates with the second photoelectric switch 308 to generate a signal to control the second geared motor 304 to reset after reverse rotation. The third sensing plate 311 cooperates with the third photoelectric switch 310 to generate a signal to control the second geared motor 304 to reset after forward rotation. Figure 7 As shown, the third photoelectric switch 310 and the third sensing plate 311 are located on the same side as the second bending post 302, and the second photoelectric switch 308 and the second sensing plate 309 are located on the same side as the third bending post 303.

[0024] Further preferred, such as Figure 7As shown, the lifting assembly includes a lifting seat 601, a lifting cylinder 602, and a vertical guide rail 603. The lifting seat 601 is fixed on the machine base 1, and the vertical guide rail 603 is fixed on both sides of the lifting seat 601 and slides with the second motor base 305 of the second bending mechanism 3 via a slider. The cylinder body of the lifting cylinder 602 is fixed on the lifting seat 601, and its output end is connected to the motor base of the second bending mechanism 3. The initial state of the lifting cylinder 602 is extension, at which time the second rotating cylinder 306 and the second fixed cylinder of the second bending mechanism 3 are in the extended state. The column 307 extends out of the machine base 1. The first channel of the second limit seat 301 is used to place the first tube 101. After the second reduction motor 304 reverses and resets, the second bending part 105 is formed. The controller controls the lifting cylinder 602 to retract (specifically, the action of the lifting cylinder 602 is controlled by the action of the solenoid valve, which is the same as the prior art and will not be described in detail). The second rotating cylinder 306 and the second fixed column 307 descend, and the first tube 101 is separated from the first channel to avoid interference during the processing of the first bending part 104 at the U-shaped bend 103.

[0025] In order to ensure the stability of the defrosting heater 100 on the device when the first channel is disengaged from the support of the first tube 101, such as Figure 3 As shown, a support base 7 is fixed on the machine base 1. One end of the support base 7 extends above the second limiting seat 301 to form a guide portion 701. A guide groove 702 for inserting the second tube 102 is provided on the guide portion 701. After the second limiting seat 301 disengages from the first tube 101, the guide groove 702 provides a guiding support for the second tube 102 to ensure the continuity and accuracy of the subsequent processing of the first bending portion 104 and the fourth bending portion 107.

[0026] Specifically, such as Figure 8As shown, the third bending mechanism 4 includes a third reduction motor 403, a third rotating cylinder 405, and a third fixed column 406. The third reduction motor 403 is fixed to the machine base 1 via a third motor seat 404. The third fixed column 406 is fixed to the third motor seat 404. The third rotating cylinder 405 is sleeved on the outside of the third positioning column, and its inner side is rotatably connected to the third fixed column 406 via a bearing. Its outer side is connected to the output end of the third reduction motor 403 via a gear transmission component. The gear transmission component is the same as that in the first bending mechanism 2 and the second bending mechanism 3. The third limiting seat 401 is fixed on... The surface of the third fixed column 406 and the third limiting seat 401 have a second channel. The fourth bending column 402 is fixed to the surface of the third rotating cylinder 405 and is located on the side of the second channel facing away from the second direction. Similar to the second bending mechanism 3, the third limiting seat 401 includes four second positioning columns, arranged in pairs and fixed side by side on the third fixed column 406. The gap between the two sets of second positioning columns is the second channel. It is worth noting that the height of the second positioning column and the height of the fourth bending column 402 are both greater than the height of the second tube 102 located in the defrost heater 100. Figure 2 As shown, the fourth bending column 402 is located on the side of the second channel away from the operating position. When the third reduction motor 403 rotates forward, it drives the third rotating sleeve to rotate around the third fixed column 406 under the cooperation of the gear transmission component. The fourth bending column 402 simultaneously applies bending force to the first tube 101 and the second tube 102 entering the second channel. Under the limit of the second positioning column, the first tube 101 and the second tube 102 form the fourth bending part 107 at the fourth bending position. Similarly, a fourth sensing component for detecting the rotation angle of the third rotating cylinder 405 in the second direction is provided on the third motor base 404. It includes a fourth sensing plate fixed on the outer ring gear 9 at the bottom of the third rotating cylinder 405. The two cooperate to generate a signal, which controls the third reduction motor 403 to reset through the controller.

[0027] like Figure 4 and Figure 5As shown, the translation mechanism 5 includes a moving platform 501, a linear guide rail 503, a fourth reduction motor 502, and a rack 504. The linear guide rail 503 and the rack 504 are fixed side-by-side on the machine base 1 along the length direction. The moving platform 501 slides with the linear guide rail 503 via a slider and is fixedly connected to the connecting seat 209 of the first bending mechanism 2. The fourth reduction motor 502 is fixed on the moving platform 501 via a fourth motor seat. The output end of the fourth reduction motor 502 is equipped with a drive gear 505 that meshes with the rack 504. The machine base 1 is provided with a fifth sensing component for detecting the moving position of the moving platform 501. Specifically, the fifth sensing component includes a... The system includes a fifth photoelectric switch 506, a sixth photoelectric switch 507, and a fifth sensing plate. The fifth sensing plate is fixed to the bottom of the moving platform 501. The fifth photoelectric switch 506 and the sixth photoelectric switch 507 are fixed at intervals on the machine base 1 along the moving direction of the moving platform 501. When the moving platform 501 is in its initial position, the third bending position of the first tube 101 is located at the outlet of the first channel. When the fifth sensing plate cooperates with the fifth photoelectric switch 506, the second bending position of the first tube 101 moves to the outlet of the first channel. When the fifth sensing plate cooperates with the sixth photoelectric switch 507, the fourth bending position on the first tube 101 and the second tube 102 moves to the outlet of the second channel.

[0028] Further preferably, to prevent the second pipe body 102 from shifting and disengaging from the guide groove 702 due to the bending action of the first bending column 202 when bending the U-shaped bend 103 of the first pipe body 101, such as... Figure 3 and Figure 9 As shown, the support base 7 is provided with a pressing assembly 8, which includes a swing cylinder 802, a cylinder seat 801, an L-shaped swing arm 803, and a pressing block 805. The cylinder seat 801 is fixed on the support base, with one end extending to the outside of the guide groove 702 to form a hinge portion 8011, and the other end fixed with a bearing seat 804. The cylinder body of the swing cylinder 802 is rotatably connected to the bearing seat 804 via a rotating shaft. The output end of the swing cylinder 802 is rotatably connected to the vertical end of the L-shaped swing arm. The hinge portion 8011 is rotatably connected to the middle part of the L-shaped swing arm. The pressing block 805 is fixed on the horizontal end of the L-shaped swing arm, and the bottom of the pressing block 805 has a curved pressing groove 8051, as shown. Figure 9 As shown in (b), under the drive of the swing cylinder 802, the L-shaped swing arm 803 drives the pressure block 805 to move above the guide groove 702. The curved pressure groove 8051 and the guide groove 702 surround each other to form a third channel 12 through which the second tube 102 passes axially, and the second tube 102 can move circumferentially within the third channel 12.

[0029] The following describes the operating steps of this device. In this device, the controller communicates with the solenoid valves corresponding to each geared motor, photoelectric switch, lifting cylinder 602, and swing cylinder 802. The controller is a PLC controller, which can be a Mitsubishi FX3U series or a Siemens S7 series. Its control principle is existing technology and will not be elaborated upon. Each geared motor is in its initial state, the moving platform 501 is in its initial position, the first bending column 202 is located near the operating position, the second bending column 302 is located away from the operating position, the third bending column 303 is located near the operating position, and the fourth bending column 402 is located away from the operating position. On one side of the operating station, the lifting cylinder 602 is in its initial extended state, and the swing cylinder 802 is in its initial retracted state. The defrosting heater 100 to be processed is placed in the device, wherein the U-shaped elbow 103 is located in the slot, the first tube 101 is located in the first channel, and the second tube 102 is located in the guide groove 702. The operating device and the controller control the swing cylinder 802 to move, and the pressure block 805 moves above the guide groove 702. The second tube 102 is radially restricted in the third channel 12 by the curved pressure groove 8051. The second reduction motor 304 rotates forward to bend the first tube 101 to form the third bend 106. When the third sensor 311 engages with the third photoelectric switch 310, the controller receives a signal to reset the second reduction motor 304. After a 2-second delay, the controller drives the fourth reduction motor 502 to rotate forward. When the fifth sensor 508 engages with the fifth photoelectric switch 506, the first tube 101 moves a corresponding distance within the first channel. The controller receives a signal to reverse the second reduction motor 304, bending the second tube 102 to form the second bent portion 105. When the second sensor 309 engages with the second photoelectric switch 308, the controller receives a signal to reset the second reduction motor 304. After a 2-second delay, the controller controls the lifting cylinder 602 to operate. The second bending mechanism 3 is lowered to a predetermined height. At this time, the controller controls the first reduction motor 203 to rotate forward, bending the U-shaped bend 103 of the first tube 101 to form the first bent section 104. After the first sensing plate 208 cooperates with the first photoelectric switch 207, the controller receives a signal and controls the first reduction motor 203 to reset. After a 2-second delay, the fourth reduction motor 502 is driven to rotate forward again. When the fifth sensing plate 508 cooperates with the sixth photoelectric switch 507, the first tube 101 moves a corresponding distance within the third channel 12 along with the second tube 102. Because the first tube 101 has undergone three bends (specifically in this scheme, such as...), Figure 1As shown, the third bend 106 has a deflection angle of 10°, the second bend 105 has a deflection angle of 20°, and the first bend 104 has a deflection angle of 10°. Its terminals are parallel to the terminals of the second tube 102, and both enter the second channel for a certain length. The controller receives a signal and controls the third reduction motor 403 to rotate forward, bending the terminals of the first tube 101 and the second tube 102 by 90° to form the fourth bend 107. Once the fourth sensing plate 408 cooperates with the fourth photoelectric switch 407, the controller controls the third reduction motor 403 and the fourth photoelectric switch 407 to rotate forward. The four-speed reduction motor 502, swing cylinder 802, and lifting cylinder 602 are reset in sequence. The processed defrost heater 100 is detached from the first limit seat 201 and guide groove 702. The operator can take it out and put in a new defrost heater 100 to be processed. The automation level of the whole device is effectively improved compared with the existing four-station processing, reducing the time required for the transfer of semi-finished products between stations, effectively improving processing efficiency, and the operating space required for the whole device is greatly reduced, which is conducive to a more reasonable work layout in the workshop.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bending device for a defrosting heater, characterized in that, The system includes a machine base and a first bending mechanism, a second bending mechanism, and a third bending mechanism arranged sequentially along the length of the machine base. The first bending mechanism has a first limiting seat for inserting a U-shaped bend and a first bending column that rotates in a first direction. The second bending mechanism has a second limiting seat for inserting a first tube, a second bending column that rotates in a second direction, and a third bending column that rotates in the first direction. The third bending mechanism has a third limiting seat for inserting a first tube and a second tube, and a fourth bending column that rotates in the second direction. The first tube body is connected to the machine platform via a lifting mechanism. The lifting mechanism drives the second bending mechanism to move downward so that the first tube body is separated from the second limiting seat. The first bending mechanism is connected to the machine platform via a translation mechanism. The translation mechanism drives the first bending mechanism to move in a direction close to the second bending mechanism so that the first tube body is bent into a third bending section by the third bending column, bent into a second bending section by the second bending section, bent into a first bending section by the first bending column, and then bent together with the second tube body by the fourth bending column to form a fourth bending section.

2. The bending device for a defrosting heater according to claim 1, characterized in that, The first bending mechanism includes a first geared motor, a first rotating cylinder, and a first fixed column. The first geared motor is connected to a translation mechanism via a first motor base. The first fixed column is fixed on the first motor base. The first rotating cylinder is rotatably connected to the first fixed column and is driven by the output end of the first geared motor via a gear transmission component. The first limiting seat is fixed on the surface of the first fixed column and has a slot inside. The first bending column is fixed on the surface of the first rotating cylinder and is located on the side of the slot facing away from the first direction. The first motor base is provided with a first sensing component for detecting the rotation angle of the first rotating cylinder in the first direction.

3. The bending device for a defrosting heater according to claim 1, characterized in that, The second bending mechanism includes a second geared motor, a second rotating cylinder, and a second fixed column. The second geared motor is connected to the lifting mechanism via a second motor base. The second fixed column is fixed on the second motor base. The second rotating cylinder is rotatably connected to the second fixed column and is driven by the output end of the second geared motor via a gear transmission component. The second limiting seat is fixed on the surface of the second fixed column, and the second limiting seat has a first channel. The second bending column and the third bending column are fixed circumferentially on the surface of the second rotating cylinder. The second bending column is located on the side of the first channel facing away from the second direction, and the third bending column is located on the side of the first channel facing away from the first direction. The second motor base is provided with a second sensing component for detecting the rotation angle of the second rotating cylinder in the second direction and a third sensing component for detecting the rotation angle in the first direction.

4. The bending device for a defrosting heater according to claim 1, characterized in that, The third bending mechanism includes a third geared motor, a third rotating cylinder, and a third fixed column. The third geared motor is fixed on the machine base via a third motor seat. The third fixed column is fixed on the third motor seat. The third rotating cylinder is rotatably connected to the third fixed column and is driven by the output end of the third geared motor via a gear transmission component. The third limiting seat is fixed on the surface of the third fixed column and has a second channel inside. The fourth bending column is fixed on the surface of the third rotating cylinder and is located on the side of the second channel facing away from the second direction. The third motor seat is provided with a fourth sensing component for detecting the rotation angle of the third rotating cylinder in the second direction.

5. A bending device for a defrosting heater according to claim 1 or 2, characterized in that, The translation mechanism includes a moving platform, a linear guide rail, a fourth reduction motor, and a rack. The linear guide rail and the rack are fixed side by side on the machine base along the length direction. The moving platform slides with the linear guide rail via a slider and is fixedly connected to the first bending mechanism. The fourth reduction motor is fixed on the moving platform via a fourth motor mount. The output end of the fourth reduction motor is equipped with a drive gear that meshes with the rack. The machine base is provided with a fifth sensing component for detecting the moving position of the moving platform.

6. A bending device for a defrosting heater according to claim 1 or 3, characterized in that, The lifting mechanism includes a lifting seat, a lifting cylinder, and a vertical guide rail. The lifting seat is fixed on the machine base, and the vertical guide rail is fixed on both sides of the lifting seat and slides with the second bending mechanism via a slider. The cylinder body of the lifting cylinder is fixed on the lifting seat, and its output end is connected to the second bending mechanism.

7. A bending device for a defrosting heater according to any one of claims 1-4, characterized in that, A support base is fixed on the machine base. One end of the support base extends above the second limiting seat to form a guide portion. A guide groove for inserting the second tube is provided on the guide portion.

8. The bending device for a defrosting heater according to claim 7, characterized in that, The support base is equipped with a pressing assembly, which includes a swing cylinder, a cylinder seat, an L-shaped swing arm, and a pressing block. The cylinder seat is fixed on the support base, with one end extending to the outside of the guide groove to form a hinge, and the other end fixed with a bearing seat. The cylinder body of the swing cylinder is rotatably connected to the bearing seat via a rotating shaft. The output end of the swing cylinder is rotatably connected to the vertical end of the L-shaped swing arm. The hinge is rotatably connected to the middle part of the L-shaped swing arm. The pressing block is fixed on the horizontal end of the L-shaped swing arm, and the bottom of the pressing block has a curved pressing groove. The curved pressing groove moves above the guide groove under the drive of the swing cylinder and surrounds the guide groove to form a third channel for the second tube to pass through axially.

Images