Air conditioner copper pipe flaring and chamfering treatment device

Abstract

The invention belongs to the technical field of machine tool metal machining, and particularly relates to an air conditioner copper pipe flaring and chamfering treatment device which comprises a fixing ring, a matching sleeve is fixedly connected to the fixing ring, a moving column is slidably connected to the matching sleeve, a longitudinal piece is fixedly connected to the moving column, a fixing sleeve is fixedly connected to the longitudinal piece, and a flaring and chamfering device is arranged on the fixing sleeve. The fixing sleeve is rotatably connected with a frustum part, the front side of the frustum part is fixedly connected with a cylindrical part, the cylindrical part is connected with a chamfering head, the device further comprises a plurality of auxiliary grooves formed in the cylindrical part, the inclination angles of openings of the auxiliary grooves are gradually increased in the clockwise direction, the device further comprises a connecting plate fixedly connected to the longitudinal piece, and the connecting plate is fixedly connected with a collecting part. Chamfering and chambering operation can be continuously achieved in the device in sequence, machining errors are reduced, and convenience is brought to actual production.

Description

Technical Field

[0001] The present invention belongs to the technical field of machine tool metal processing, and particularly relates to a device for flaring and chamfering air-conditioning copper tubes. Background Art

[0002] During the processing of air-conditioning copper tubes, after the copper tubes are cut, the cut ends of the copper tubes cut by the cutting tool will have the phenomenon of inward contraction, burrs with reduced inner and outer diameters, which will affect the processing quality of subsequent processes and also have an adverse effect on the refrigerant flowing through here. Therefore, it is necessary to chamfer the cut ends of the tubes. At the same time, for the convenience of subsequent connection, the tube ends will also be flared, and expanded into a flared mouth to ensure sealing performance and improve connection strength.

[0003] Existing devices usually need to first process the copper tube ports through cutting equipment, then separately chamfer and polish, and finally use flaring tools to complete the flaring step-by-step operation. This not only increases the equipment investment cost, but also results in low processing efficiency due to frequent tool changes. Especially in mass production, it is difficult to meet the high-tempo requirements. At the same time, when performing different-step processing, the copper tubes need to be moved to different devices for subsequent processing operations. This process requires multiple positioning transfers of the copper tubes, which is prone to error accumulation and affects the product forming effect. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a device for flaring and chamfering air-conditioning copper tubes, which can successively perform chamfering and flaring operations continuously within the device, reduce processing errors, and bring convenience to actual production.

[0005] A device for flaring and chamfering air-conditioning copper tubes includes a fixed ring, a mating sleeve is fixedly connected to the fixed ring, a moving column is slidably connected to the mating sleeve, a longitudinal piece is fixedly connected to the moving column, a fixed sleeve is fixedly connected to the longitudinal piece, a frustum part is rotatably connected to the fixed sleeve, a cylindrical part is fixedly connected to the front side of the frustum part, and a chamfering head is connected to the cylindrical part.

[0006] It further includes a plurality of auxiliary grooves opened on the cylindrical part.

[0007] The opening inclination angles of the plurality of auxiliary grooves gradually increase in the clockwise direction.

[0008] It further includes a connecting plate fixedly connected to the longitudinal piece, and a collecting part is fixedly connected to the connecting plate.

[0009] This device can successively perform chamfering and reaming operations continuously inside the device, reducing processing errors and bringing convenience to actual production. The frustum part can rotate continuously during the flaring process, and the frustum part can perform uniform extrusion and expansion operations on the position of the steel pipe port. When the uneven arc surfaces with different slopes composed of multiple auxiliary grooves come into contact with the curled burrs, they perform scraping at different angles on the curled burrs, enabling the irregular curled burrs to be rotated and scraped off. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below with reference to the drawings and specific implementation methods.

[0011] Figure 1 and Figure 2 is a schematic diagram of the overall structure of an air-conditioning copper pipe flaring and chamfering device;

[0012] Figure 3 is a schematic diagram of the structure of the moving column;

[0013] Figure 4 is a schematic cross-sectional structure diagram of the fixed ring;

[0014] Figure 5 is a schematic diagram of the structure of the frustum part;

[0015] Figure 6 is a schematic cross-sectional structure diagram of the chamfering head;

[0016] Figure 7 is a schematic diagram of the structure of the sliding disc;

[0017] Figure 8 is a schematic cross-sectional structure diagram of the cylindrical part;

[0018] Figure 9 is a schematic diagram of the structure of the fixing bracket;

[0019] Figure 10 is a schematic diagram of the structure of the moving frame;

[0020] Figure 11 is a schematic diagram of the structure of the connecting ring;

[0021] Figure 12 is a schematic diagram of the structure of the heating ring;

[0022] Figure 13 is a schematic diagram of the structure of the auxiliary groove;. DETAILED DESCRIPTION OF THE INVENTION

[0023] An air-conditioning copper tube flaring and chamfering device includes a fixing ring 201. A fitting sleeve 202 is fixedly connected to the fixing ring 201. A moving column 101 is slidably connected to the fitting sleeve 202. The fixing ring 201 is fixed by screwing bolts onto the fixing ring 201, and thus the whole device is fixed inside the machine tool. A longitudinal piece 103 is fixedly connected to the moving column 101, and a rectangular piece 102 is fixedly connected to the moving column 101. A first electric push rod capable of pushing the rectangular piece 102 to slide is fixedly connected to the fixing ring 201. A fixing sleeve 104 is fixedly connected to the longitudinal piece 103. A frustum part 303 is rotatably connected to the fixing sleeve 104. A first motor is fixedly connected to the longitudinal piece 103. The output shaft of the first motor is fixedly connected to the frustum part 303. A cylindrical part 301 is fixedly connected to the front side of the frustum part 303. A chamfering head 401 is connected to the cylindrical part 301.

[0024] Use a fixture to clamp the air-conditioning copper tube to be chamfered and make the air-conditioning copper tube and the chamfering head 401 in a concentric position. Then operate the telescopic rod of the first electric push rod to contract, thereby driving the rectangular piece 102 to move, so that the moving column 101 slides on the fitting sleeve 202. During this process, the moving column 101 will drive the longitudinal piece 103 and the fixing sleeve 104 to slide synchronously, so that the frustum part 303 and the chamfering head 401 move towards the copper tube. At the same time, start the first motor to make the output shaft of the first motor drive the frustum part 303 to rotate continuously, so that the frustum part 303, the cylindrical part 301 and the chamfering head 401 all rotate continuously. When the chamfering head 401 is inserted into the copper tube, it will gradually contact the curled burrs generated by cutting inside the copper tube. Then, as the chamfering head 401 rotates gradually and cooperates with the gradual forward sliding of the moving column 101, the chamfering head 401 will scrape and remove the curled burrs, completing the chamfering operation.

[0025] Subsequently, when the moving column 101 continues to slide forward and the chamfering head 401 completely passes through the copper tube nozzle position, as the moving column 101 continues to move forward, part of the cylindrical part 301 will gradually enter the steel tube nozzle position. At this time, the continuously rotating cylindrical part 301 will further improve the scraping effect on the curled burrs on the inner wall of the steel tube, and further completely remove the curled burrs generated by cutting, improving the overall chamfering effect on the inner wall of the steel tube and avoiding the expansion of defects caused by burrs during the flaring process.

[0026] Continuously moving the moving column 101 will make the frustum part 303 gradually approach the steel tube. When the frustum part 303 contacts the steel tube, as the moving column 101 continues to slide, the frustum part 303 will gradually be inserted into the steel tube port position. Since the frustum part 303 is a frustum shape with a narrow front and a wide rear, when the frustum part 303 gradually enters the steel tube, it can press the steel tube port to deform, thus completing the flaring operation of the steel tube, enabling the device to continuously perform chamfering and reaming operations successively, bringing convenience to the processing and forming process.

[0027] Meanwhile, since the frustum part 303 can also continuously rotate during the flaring process, the frustum part 303 can uniformly extrude and expand the position of the steel pipe port, ensuring that the steel pipe can be uniformly flared into a suitable shape, guaranteeing the processing effect, and effectively avoiding the situation that the steel pipe forms cracks due to uneven force during the flaring process.

[0028] It further includes a plurality of auxiliary grooves 302 formed on the cylindrical part 301.

[0029] The arrangement of the plurality of auxiliary grooves 302 enables, after the cylindrical part 301 enters the interior of the steel pipe, as the cylindrical part 301 continuously rotates and gradually moves forward, when scraping and perfecting the curled burr position on the inner wall of the steel pipe, the plurality of auxiliary grooves 302 can make the surface of the cylindrical part 301 form an uneven arc surface. Thus, when the cylindrical part 301 rotates for scraping, it can more easily scrape off the curled burrs after contacting the curled burrs, improving the subsequent chamfering effect.

[0030] When using a fixture to clamp the steel pipe, a fixture that can make the clamped workpiece rotate around its own center can be selected. When using the chamfering head 401 and the auxiliary grooves 302 to continuously rotate to remove the curled burrs, the fixture can drive the clamped workpiece to rotate in a direction opposite to the rotation direction of the cylindrical part 301, so that the curled burrs can contact the chamfering head 401 and the cylindrical part 301 in the opposite rotation direction, and thus the curled burrs can receive a greater force when contacting the chamfering head 401 and the cylindrical part 301, further improving the removal effect of the curled burrs.

[0031] Such fixtures are conventional settings in existing machine tools in the prior art and are mature and frequently used prior art, so they will not be elaborated here.

[0032] Meanwhile, the arrangement of the plurality of auxiliary grooves 302 enables, when perfecting the chamfering effect, the part of the curled burrs scraped off to automatically fall into the cylindrical part 301 for collection after falling off. After the auxiliary grooves 302 completely pass through the port, the movable column 101 can be operated to slide in the reverse direction, so that the curled burrs collected in the plurality of auxiliary grooves 302 fall out. Then, the movable column 101 is slid forward again, and the subsequent flaring effect on the port is completed by using the rotating frustum part 303, thus avoiding the situation that the scraped-off curled burrs still adhere to the pipe orifice position and causing flaring cracks during subsequent flaring.

[0033] Further embodiment for removing the adhesion at the pipe orifice position:

[0034] A blower capable of sending air into the pipe is provided on the fixture. After using the cylindrical portion 301 to improve the effect of removing the curled burrs and making the moving column 101 slide reversely to move the chamfering head 401 out of the steel pipe, the blower can be started to blow the inside of the pipe with the blower to blow out the curled burrs inside the pipe, completing the removal effect.

[0035] Example 2 for further removing the adhesion at the pipe orifice position:

[0036] Make the fixture have the freedom of horizontal rotation. After making the moving column 101 slide reversely to move the chamfering head 401 out of the steel pipe, rotate the fixture horizontally to an inclined state, so as to further automatically pour out the curled burrs attached inside the copper pipe, bringing convenience to subsequent processing.

[0037] The opening inclination angles of the plurality of the auxiliary grooves 302 gradually increase in the clockwise direction.

[0038] The different settings of the opening inclination angles of the plurality of auxiliary grooves 302 enable the cylindrical portion 301 to rotate, and then improve the effect of scraping the curled burrs. When the uneven arc surfaces with different slopes formed by the plurality of auxiliary grooves 302 contact the curled burrs, they can scrape the curled burrs at different angles, so that the irregular curled burrs can be rotated and scraped, further improving the effect of removing the curled burrs.

[0039] It further includes a connecting plate 105 fixedly connected to the longitudinal piece 103, and a collecting portion 106 is fixedly connected to the connecting plate 105.

[0040] The collecting portion 106 can collect the curled burrs scraped from the inside of the air-conditioning copper pipe, so that the curled burrs can be automatically stored and collected by the collecting portion 106, avoiding the burrs flying everywhere. At the same time, since the collecting portion 106 is fixedly connected to the connecting plate 105, when the moving column 101 moves and drives the connecting plate 105 to move, the collecting portion 106 can also move along with the connecting plate 105, facilitating the collection of the curled burrs brought out by the scraping of the cylindrical portion 301.

[0041] It further includes a fixing frame 501 fixedly connected to the longitudinal piece 103, and a plurality of heating rings 502 are fixedly connected to the fixing frame 501. The radius of the heating ring 502 is greater than the maximum radius of the frustum portion 303.

[0042] Before flaring the air-conditioning copper pipe with a relatively thick thickness, the heating ring 502 can be started first to continuously heat the steel pipe with the heating ring 502, and cooperate with the continuous sliding of the moving column 101 on the mating sleeve 202. Then, use the cylindrical portion 301 to heat the position to be flared to soften it, so that the relatively thick air-conditioning copper pipe can still smoothly perform the flaring operation, avoiding the situation that the relatively thick air-conditioning copper pipe has a large strength and the subsequent flaring operation cannot be smoothly performed only by the continuously moving forward and rotating frustum portion 303.

[0043] When heating is performed using multiple heating rings 502, the fixture can drive the copper tube to rotate continuously, so that the copper tube is heated evenly, thereby ensuring that when the flaring operation is performed on the subsequent frustum portion 303, the amount of deformation of each part of the copper tube is the same, and further ensuring the uniformity of flaring.

[0044] The setting that the radius of the heating ring 502 is greater than the maximum radius of the frustum portion 303 enables the multiple heating rings 502 to smoothly pass through the position of the flared steel tube when the sliding moving column 101 is reset backward after the flaring is completed, ensuring the smooth progress of processing.

[0045] It further includes a connecting ring 701 fixedly connected to the fixing frame 501. A slider 702 is slidably connected to the connecting ring 701. A second motor is fixedly connected to the connecting ring 701. A gear is fixedly connected to the output shaft of the second motor. A toothed ring is fixedly connected to the slider 702. The gear meshes with the toothed ring. A connecting head 703 is fixedly connected to the slider 702. A blower is fixedly connected inside the connecting head 703.

[0046] If, during the actual use process, due to insufficient installation space or other factors, the fixture for clamping the copper tube does not have a relevant structure capable of driving the workpiece to rotate, then during the process of heating the copper tube using multiple heating rings 502, the blower on the connecting head 703 can be started to evenly blow the heat dissipated by the multiple heating rings 502 onto the copper tube, further ensuring the smooth realization of the uniform heating effect. Subsequently, the gear is operated to rotate reciprocally, thereby driving the toothed ring to rotate reciprocally, and then driving the slider 702 to slide reciprocally on the connecting ring 701, causing the blower to move reciprocally, and blowing the heat dissipated by the multiple heating rings 502 over a large range, further facilitating the uniform contact of the heat with the copper tube and ensuring the subsequent flaring effect.

[0047] A sliding disc 403 is slidably connected inside the frustum portion 303. A long groove is formed inside the frustum portion 303. The sliding disc 403 is slidably connected inside the long groove. A chamfering head 401 is connected to the sliding disc 403. The chamfering head 401 can be inserted into the long groove. A sliding plate 402 is slidably connected to the chamfering head 401. A first compression spring is fixedly connected between the sliding plate 402 and the chamfering head 401. A second compression spring is fixedly connected between the sliding disc 403 and the frustum portion 303. A slot 304 is formed on the frustum portion 303. The sliding plate 402 can be inserted into the slot 304.

[0048] As the moving column 101 slides, when the chamfering head 401 contacts the end of the steel pipe, as the moving column 101 continues to slide, the chamfering head 401 is gradually pushed backward by the curling burr at the end of the steel pipe, so that the sliding disc 403 gradually overcomes the elastic force of the second compression spring in the long groove of the cone portion 303 and slides. At this time, the slide plate 402 gradually approaches the slot 304. When the slide plate 402 overlaps with the slot 304, the elastic force of the first compression spring presses the slide plate 402 into the slot 304. The chamfering head 401 and the frustum part 303 are relatively fixed, so that the subsequent curling burr removal operation is stable. Through the slidable setting of the chamfering head 401 and the slide plate 402, the sliding distance of the moving column 101 when the chamfering head 401 contacts with the pipe mouth can be accurately determined by monitoring the sliding condition of the slide plate 402, thereby determining the sliding distance required for the moving column 101 in the subsequent processing process, ensuring that the end of the frustum part 303 can be in contact with the rear end of the pipe mouth, so that the subsequent expansion size is accurate.

[0049] The chamfering head 401 is rotatably connected to the sliding disc 403 , and a torsion spring is fixedly connected between the chamfering head 401 and the sliding disc 403 . The torsion spring can make the chamfering head 401 be in a posture where the slide plate 402 and the slot 304 are staggered under normal conditions.

[0050] After the chamfering head 401 is moved to the air-conditioning steel pipe port for contact, the air-conditioning steel pipe port will have curling burrs, which will provide greater friction for the chamfering head 401. At this time, the cone part 303 is operated to rotate on the matching sleeve 202. The chamfering head 401 will not be able to rotate synchronously with the chamfering head 401 due to the greater friction provided by the curling burrs, but will overcome the torsion force of the torsion spring and always remain in place. Only when the chamfering head 401 is rotated to the position where the slide plate 402 and the slot 304 are in the overlapping position in the horizontal direction, and as the cone part 303 continues to move forward so that the slide plate 402 and the slot 304 are also overlapped in the vertical direction, the slide plate 402 will be subjected to the elastic force of the first compression spring to slide upward and be sent into the slot 304. Then, the cone part 303 can be rotated again to make the chamfering head 401 rotate stably with support, thereby completing the subsequent curling burr removal effect.

[0051] That is, by checking the sliding condition of the slide plate 402, it is possible to determine the sliding distance required for the moving column 101 in the subsequent processing process, and at the same time, it is possible to check whether the frustum part 303 can rotate normally, thereby expanding the self-inspection range of the equipment, making the equipment more automated, and more conducive to actual production. That is, only when the frustum part 303 can rotate normally and the chamfering head 401 can slide on the frustum part 303, can the slide plate 402 be smoothly inserted into the slot 304, so that the inspection result can take into account both types of inspection information.

[0052] It also includes a moving frame 601 slidably connected to the fixed frame 501, a detection rod 602 is slidably connected to the moving frame 601, an arc chamfer is provided on the right side of the detection rod 602, a third compression spring is fixedly connected between the moving frame 601 and the detection rod 602, and a second electric push rod that can push the moving frame 601 to slide is fixedly connected to the fixed frame 501.

[0053] When performing the sliding condition inspection operation of the slide plate 402, the moving frame 601 is slid downward to move the moving frame 601 to a position where the detection rod 602 can contact the slide plate 402, and then the cone portion 303 is rotated and the moving column 101 is moved forward, so that the slide plate 402 is inserted into the slot 304. When the slide plate 402 enters the slot 304, the slide plate 402 will protrude from the cone portion 303, and then with the continuous rotation of the cone portion 303, the slide plate 402 will be able to smoothly push the detection rod 602 to slide on the moving frame 601 after contacting the detection rod 602, overcoming the elastic force of the third compression spring, and then by monitoring the sliding condition of the detection rod 602, the sliding condition of the slide plate 402 can be inspected, and the two inspection effects of determining the sliding distance required for the moving column 101 in the subsequent processing process and whether the cone portion 303 can rotate normally are completed;

[0054] A displacement sensor is connected by tightening bolts on the moving frame 601, and the moving end of the displacement sensor is fixedly connected to the detection rod 602. When the detection rod 602 slides, the detection rod 602 drives the moving end of the displacement sensor to slide, so that the displacement sensor receives the movement signal, thereby completing the monitoring effect of the movement of the skateboard 402.

[0055] A pressing plate 603 is fixedly connected to the moving frame 601 .

[0056] When the processing is completed and the slide plate 402 needs to be reset, the sliding frame 601 is lowered to make the detection rod 602 contact with the slide plate 402, and then the sliding frame 601 is continuously slid downward. When the pressure plate 603 contacts with the detection rod 602, the sliding frame 601 is continuously slid downward. At this time, since the detection rod 602 cannot continue to slide upward, the detection rod 602 will gradually press the slide plate 402 downward, causing the slide plate 402 to disengage from the slot 304. At this time, the setting of the torsion spring and the third compression spring will cause the chamfering head 401 to reset to the position where the slide plate 402 and the slot 304 are staggered, thereby allowing the chamfering head 401 to automatically reset, facilitating the next processing operation, further improving the degree of automation of the equipment, and bringing convenience to actual production.

Claims

1. An air-conditioning copper tube expansion and chamfering processing device, characterized in that: It includes a fixed ring, a matching sleeve is fixedly connected to the fixed ring, a moving column is slidably connected to the matching sleeve, a longitudinal sheet is fixedly connected to the moving column, a fixed sleeve is fixedly connected to the longitudinal sheet, a frustum part is rotatably connected to the fixed sleeve, a cylindrical part is fixedly connected to the front side of the frustum part, and a chamfered head is connected to the cylindrical part.

2. An air-conditioning copper tube expansion and chamfering processing device according to claim 1, characterized in that: The invention also includes a plurality of auxiliary grooves which are arranged on the cylindrical part.

3. A device for processing the expansion and chamfering of an air-conditioning copper tube according to claim 2, characterized in that: The opening inclination angles of the plurality of auxiliary grooves gradually increase in the clockwise direction.

4. A device for processing the expansion and chamfering of an air-conditioning copper tube according to claim 3, characterized in that: It also includes a connecting plate fixedly connected to the longitudinal piece, and a collecting part is fixedly connected to the connecting plate.

5. An air-conditioning copper tube expansion and chamfering processing device according to claim 4, characterized in that: It also includes a fixing frame fixedly connected to the longitudinal piece, and a plurality of heating rings are fixedly connected to the fixing frame.

6. A device for processing the expansion and chamfering of an air-conditioning copper tube according to claim 5, characterized in that: It also includes a connecting ring fixedly connected to the fixing frame, a sliding block is slidably connected to the connecting ring, a connecting head is fixedly connected to the sliding block, and an air blower is fixedly connected inside the connecting head.

7. An air-conditioning copper tube expansion and chamfering processing device according to claim 1, characterized in that: A sliding disc is slidably connected inside the cone part, a slide plate is slidably connected on the chamfering head, a first compression spring is fixedly connected between the slide plate and the chamfering head, a second compression spring is fixedly connected between the sliding disc and the cone part, and a slot is provided on the cone part, into which the slide plate can be inserted.

8. An air-conditioning copper tube expansion and chamfering processing device according to claim 7, characterized in that: The chamfering head is rotatably connected to the sliding disc, and a torsion spring is fixedly connected between the chamfering head and the sliding disc.

9. An air-conditioning copper tube expansion and chamfering processing device according to claim 8, characterized in that: Also included is a moving frame which is slidably connected to the fixed frame.

10. An air-conditioning copper tube expansion and chamfering processing device according to claim 9, characterized in that: A pressing plate is fixedly connected to the moving frame.

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