Automatic copper pipe drawing equipment

Abstract

The invention relates to the technical field of copper pipe drawing, in particular to automatic copper pipe drawing equipment which comprises a main body plate, a drawing and bending mechanism for drawing a copper pipe and bending the radian of a die is arranged at the upper end of the main body plate, and the drawing and bending mechanism comprises two guide grooves symmetrically formed in the inner side face of the main body plate. The main body plate is slidably connected with connecting plates in the two guide grooves respectively, and the upper end of the main body plate is provided with a movable chambering mechanism for chambering the inner side surface during drawing and arc-shaped bending; the first winding device and the second winding device wind and unwind the connecting rope, so that the limiting ball is driven to reciprocate in the copper bar, the diameter of the limiting ball is the same as the designed inner diameter of the copper bar, the inner diameter is prevented from being smaller than a preset value when the copper bar is drawn, and the quality of the drawn copper bar is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of copper tube drawing, in particular to an automatic copper tube drawing device. Background Art

[0002] In heat exchange equipment in industries like chemical and electric power, curved hollow copper tubes are commonly used as heat exchange components during transportation. Hydraulic oil, coolant, and other fluids, for example, need to be cooled during circulation to ensure continued use. These fluids are transported through hollow copper tubes. Due to the high thermal conductivity of copper tubes, thermostats are installed on the sides of these tubes to control the liquid temperature. Conventional hollow copper tubes are typically produced by first drawing a standard length of copper tube, then cutting the drawn tube to the desired length, heating it again, and bending it through a mold to finalize the desired shape.

[0003] The existing technology, when producing copper tubes with a certain curvature, needs to heat the copper tube for the first time, draw and cut the heated copper tube, and then heat the copper tube again and extrude the copper tube through a mold, so that the surface of the copper tube is squeezed into several curved forms. This processing method requires two heatings, which increases the probability of cracking on the copper tube surface due to heating. The existing technology directly draws the entire standard copper tube into multiple monomers and then cuts them. Due to the long drawing length, the deformation amounts of the two ends and the middle of the standard copper tube are different when stretched, resulting in the diameter of some copper tubes being different from the design requirements, and the defective rate is high. In addition, the inner side of the bent part of the copper tube after production deviates greatly from the design diameter due to the lack of support force. When transporting liquid after being installed in the pipeline, the liquid in the pipeline impacts the inner side of the pipeline due to the change in diameter, which accelerates the wear of the pipeline and increases the risk of pipeline rupture. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an automatic copper tube drawing device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic copper tube drawing device, comprising a main body plate, a working groove is provided at the upper end of the main body plate, and a drawing and bending mechanism for drawing the copper tube and bending the mold arc is provided at the upper end of the main body plate, and the drawing and bending mechanism comprises two guide grooves symmetrically provided on the inner side surface of the main body plate, and the main body plate is slidably connected with a connecting plate in the two guide grooves respectively, and the ends of the two connecting plates are fixedly connected to a first fixed body, and the end of the first fixed body is connected to a second electric telescopic rod, and the telescopic end of the second electric telescopic rod is fixedly connected to a fixing ring, and the upper end of the main body plate is provided with a movable reaming mechanism for reaming the inner side surface during drawing and arc bending.

[0006] Preferably, the main body plate is fixedly connected to the second motor in the two guide grooves, the transmission shaft ends of the two second motors are fixedly connected to the second threaded rods, the two second threaded rods are respectively arranged with the connecting plate through threaded cooperation, the main body plate is fixedly connected to the first motor at the lower end of the working groove, the transmission shaft end of the first motor is fixedly connected to the first threaded rod, the side surface of the first threaded rod is threadedly cooperated with the second fixing body, and the lower end face of the second fixing body is in contact with the end face of the main body plate.

[0007] Preferably, the upper end of the second fixed body is fixedly connected to the fourth electric telescopic rod, the telescopic end of the fourth electric telescopic rod is fixedly connected to the biaxial electric telescopic rod, the two ends of the biaxial electric telescopic rod are respectively fixedly connected to support plates, and the upper ends of the two support plates are respectively fixedly connected to arc molds.

[0008] Preferably, a first through hole is provided through the end of the first fixed body, and three first empty slots arranged at equal angles are provided on the inner side surface of the first fixed body near one end, and the three first empty slots are respectively connected to the first electric telescopic rods, and the telescopic ends of the three first electric telescopic rods are respectively fixedly connected to the anti-slip plate.

[0009] Preferably, the inner side surface of the fixing ring is provided with a plurality of second slots arranged at equal angles, and a third electric telescopic rod is fixedly connected to a plurality of the second slots respectively, and the telescopic ends of the plurality of the third electric telescopic rods are fixedly connected to an anti-slip plate respectively, and the inner side surface of the first fixing body is provided with a first cavity, and the first fixing body is connected to a third motor at a position in contact with the first cavity, and a gear is fixedly connected to the transmission shaft end of the third motor, and the first fixing body is rotatably connected to a gear ring in the first cavity, and the side surface of the gear ring is meshed with the gear, and a distance detector for detecting the thickness of the copper tube is provided on the inner side surface of the gear ring.

[0010] Preferably, the movable hole expanding mechanism includes a second through hole provided through the side surface of the main body plate, a connecting ring is provided in the second through hole, a limit block is slidably provided on the inner surface of the connecting ring, a first winding device is provided on the upper end surface of the main body plate corresponding to the second through hole, a connecting rope in the first winding device is fixedly connected to the end of the limit block, a fifth empty groove is provided on the side surface of the main body plate at equal angles of the second through hole, a plurality of the sixth electric telescopic rods are respectively fixedly connected in the fifth empty grooves, and a plurality of the telescopic ends of the sixth electric telescopic rods are respectively fixedly connected to anti-slip plates.

[0011] Preferably, a third through hole is provided through the side surface of the main body plate, and the main body plate is fixedly connected to a seventh electric telescopic rod in the third through hole. A fourth through hole communicating with the third through hole is provided at the upper end of the main body plate, and a second winding device is fixedly connected to the upper end of the main body plate. The connecting rope in the second winding device passes through the fourth through hole and the third through hole, and the end of the connecting rope in the second winding device is fixedly connected to a limiting ball.

[0012] Preferably, a card slot is provided on the side of the limiting ball, and the card slot is slidingly matched with the telescopic end of the seventh electric telescopic rod. The limiting ball is provided with a third empty slot on the side corresponding to the card slot, and the limiting ball is provided with a fourth empty slot at an equal angle on the side of the third empty slot. Several fifth electric telescopic rods are respectively fixedly connected in the fourth empty slots, and the telescopic ends of several fifth electric telescopic rods are respectively fixedly connected with anti-slip plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Several first and third electric telescopic rods are extended to fix the copper rod. Then, the second electric telescopic rod is extended to pull the fixed area of ​​the copper rod. While pulling, the third motor is started, driving the gear to rotate. The gear cooperates with the gear ring to rotate. While rotating, the distance detector on the inner side of the gear ring detects the distance to the surface of the copper rod, thereby measuring the diameter of the outer side of the copper rod. The entire copper rod can now be stretched at a certain distance to prevent deformation of the copper rod after drawing due to its long length, thereby improving the quality of drawing. 2. The seventh electric telescopic rod extends, driving the limiting ball to move into the second through hole until the limiting block slides into the third empty slot. Then the fifth electric telescopic rod extends, and the fifth electric telescopic rod drives the anti-slide plate to fix the limiting block. Then the first winding device and the second winding device wind and release the connecting rope, thereby driving the limiting ball to move back and forth in the copper rod. The diameter of the limiting ball is the same as the designed inner diameter of the copper rod, preventing the inner diameter of the copper rod from being less than the predetermined value when the copper rod is pulled, thereby improving the quality of the copper rod after pulling. 3. The double-axis electric telescopic rod contracts, driving the arc die to bend the side of the drawn copper rod. While the arc die is plasticizing the copper rod, the limit ball continues to move back and forth in the copper rod driven by the first winding device and the second winding device, which can ensure that the inner side of the copper rod is supported when bending to prevent the inner side from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention is a sectional view of the whole Figure 1 ; Figure 3 Schematic diagram of part of the structure of the present invention Figure 1 ; Figure 4 The present invention is a sectional view of the whole Figure 2 ; Figure 5 Schematic diagram of part of the structure of the present invention Figure 2 ; Figure 6 For the present invention Figure 2 A magnified view of point A; Figure 7 For the present invention Figure 2 Enlarged view of point B; Figure 8 For the present invention Figure 2 Enlarged view of point C.

[0015] 1. Main plate; 2. Drawing and bending mechanism; 3. Mobile reaming mechanism; 4. First through hole; 11. Working slot; 21. First threaded rod; 22. First motor; 23. Second motor; 24. Guide slot; 25. Second threaded rod; 26. First fixed body; 27. First cavity; 28. Gear; 29. ​​Gear ring; 210. Third motor; 211. First empty slot; 212. First electric telescopic rod; 213. Distance detector; 214. Second electric telescopic rod; 215. Fixed ring; 216. Second empty slot; 217. Third electric telescopic rod; 21 8. Second fixed body; 219. Fourth electric telescopic rod; 220. Biaxial electric telescopic rod; 221. Support plate; 222. Connecting plate; 223. Arc mold; 31. Limiting ball; 32. Slot; 33. Third empty slot; 34. Fourth empty slot; 35. Fifth electric telescopic rod; 36. Second through hole; 37. Fifth empty slot; 38. Sixth electric telescopic rod; 39. Connecting ring; 310. Limiting block; 311. First winding device; 312. Second winding device; 313. Third through hole; 314. Seventh electric telescopic rod; 315. Fourth through hole. DETAILED DESCRIPTION

[0016] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0017] See also Figures 1-8 A copper tube automatic drawing device includes a main body plate 1, a working groove 11 is opened at the upper end of the main body plate 1, and a drawing and bending mechanism 2 for drawing the copper tube and bending the mold curvature is provided at the upper end of the main body plate 1.

[0018] In this embodiment, the drawing and bending mechanism 2 includes two guide grooves 24 symmetrically opened on the inner side of the main plate 1, and the main plate 1 is slidably connected with a connecting plate 222 in the two guide grooves 24 respectively. The ends of the two connecting plates 222 are fixedly connected with a first fixed body 26, and the end of the first fixed body 26 is connected with a second electric telescopic rod 214, and the telescopic end of the second electric telescopic rod 214 is fixedly connected with a fixing ring 215.

[0019] The main body plate 1 is fixedly connected to the second motor 23 in the two guide grooves 24, and the transmission shaft ends of the two second motors 23 are fixedly connected to the second threaded rods 25, and the two second threaded rods 25 are respectively arranged with the connecting plate 222 through threaded cooperation. The main body plate 1 is fixedly connected to the first motor 22 at the lower end of the working groove 11, and the transmission shaft end of the first motor 22 is fixedly connected to the first threaded rod 21. The side of the first threaded rod 21 is threadedly cooperated with the second fixed body 218, and the lower end face of the second fixed body 218 is in contact with the end face of the main body plate 1.

[0020] The upper end of the second fixed body 218 is fixedly connected to the fourth electric telescopic rod 219, the telescopic end of the fourth electric telescopic rod 219 is fixedly connected to the biaxial electric telescopic rod 220, and the two ends of the biaxial electric telescopic rod 220 are respectively fixedly connected to support plates 221, and the upper ends of the two support plates 221 are respectively fixedly connected to arc molds 223.

[0021] A first through hole 4 is formed through the end of the first fixed body 26, and three first slots 211 arranged at equal angles are formed on the inner side surface of the first fixed body 26 near one end. The three first slots 211 are respectively connected to first electric telescopic rods 212, and the telescopic ends of the three first electric telescopic rods 212 are respectively fixedly connected to anti-slip plates.

[0022] The inner side surface of the fixing ring 215 is provided with a plurality of second slots 216 arranged at equal angles, and a plurality of third electric telescopic rods 217 are fixedly connected in the second slots 216 respectively, and the telescopic ends of the plurality of third electric telescopic rods 217 are fixedly connected with anti-slip plates respectively. The inner side surface of the first fixing body 26 is provided with a first cavity 27, and the first fixing body 26 is connected to a third motor 210 at a position in contact with the first cavity 27. The transmission shaft end of the third motor 210 is fixedly connected with a gear 28, and the first fixing body 26 is rotatably connected to a gear ring 29 in the first cavity 27. The side surface of the gear ring 29 is meshed with the gear 28, and the inner side surface of the gear ring 29 is provided with a distance detector 213 for detecting the thickness of the copper tube.

[0023] Specifically, the first motor 22 is started, and the first motor 22 drives the first threaded rod 21 to rotate. The first threaded rod 21 cooperates to drive the second fixed body 218 to move along the copper rod. When the copper rod moves to the drawn area, the dual-axis electric telescopic rod 220 contracts, driving the arc mold 223 to perform arc-shaped engagement and bending on the side of the drawn copper rod. While the arc mold 223 plasticizes the copper rod, the limiting ball 31 continues to move back and forth in the copper rod driven by the first winding device 311 and the second winding device 312, which can ensure that the copper rod supports the inner side when bending.

[0024] In this embodiment, a movable hole-expanding mechanism 3 is provided at the upper end of the main body plate 1 for expanding the inner side surface during drawing and arc bending.

[0025] The movable hole expanding mechanism 3 includes a second through hole 36 which is provided on the side of the main body plate 1, a connecting ring 39 is provided in the second through hole 36, and a limit block 310 is slidably provided on the inner side surface of the connecting ring 39, and the main body plate 1 is provided with a first winding device 311 on the upper end surface corresponding to the second through hole 36, and the connecting rope in the first winding device 311 is fixedly connected to the end of the limit block 310, and the main body plate 1 is provided with a fifth slot 37 at equal angles on the side of the second through hole 36, and several sixth electric telescopic rods 38 are fixedly connected in the fifth slots 37, and the telescopic ends of several sixth electric telescopic rods 38 are fixedly connected with anti-slip plates.

[0026] A third through hole 313 is formed through the side surface of the main body plate 1, and a seventh electric telescopic rod 314 is fixedly connected to the main body plate 1 in the third through hole 313. A fourth through hole 315 communicating with the third through hole 313 is formed at the upper end of the main body plate 1, and a second winding device 312 is fixedly connected to the upper end of the main body plate 1. The connecting rope in the second winding device 312 passes through the fourth through hole 315 and the third through hole 313, and the end of the connecting rope in the second winding device 312 is fixedly connected to the limiting ball 31.

[0027] A slot 32 is provided on the side of the limiting ball 31, and the slot 32 is slidably matched with the telescopic end of the seventh electric telescopic rod 314. The limiting ball 31 is provided with a third slot 33 on the side corresponding to the slot 32. The limiting ball 31 is provided with a fourth slot 34 at an equal angle to the side of the third slot 33. Several fifth electric telescopic rods 35 are respectively fixedly connected in the fourth slots 34, and the telescopic ends of several fifth electric telescopic rods 35 are respectively fixedly connected to anti-slip plates.

[0028] Specifically, the fifth electric telescopic rod 35 drives the anti-slide plate to fix the limit block 310, and then the first winding device 311 and the second winding device 312 wind and release the connecting rope, thereby driving the limit ball 31 to move back and forth in the copper rod, and the diameter of the limit ball 31 is the same as the designed inner diameter of the copper rod, preventing the inner diameter of the copper rod from being less than the predetermined value when the copper rod is pulled, thereby improving the quality of the copper rod after pulling.

[0029] When in use, first engage the slot 32 on the side of the limiting ball 31 with the telescopic end of the seventh electric telescopic rod 314, then put the heated copper rod into the working groove 11, and ensure that one end of the copper rod is located in the second through hole 36, then extend the sixth electric telescopic rod 38 at the same time, and fix it through the anti-slip sheet at the telescopic end of the sixth electric telescopic rod 38, then start the two second motors 23, the two second motors 23 respectively drive the second threaded rod 25 to rotate, and the second threaded rod 25 cooperates to drive the connecting plate 222 to move along the copper rod, when the connecting plate 222 drives the first fixed body 26 to move to a position close to the second through hole 36, several first electric telescopic rods 212 and third electric telescopic rods 217 extend to fix the copper rod, and then the second electric telescopic rod 214 extends to pull the area where the copper rod is fixed, and while pulling, the third motor 210 is started, and the third motor 210 drives the gear 28 to rotate, and the gear 28 cooperates to drive the gear ring 29 to rotate. During the rotation, the distance detector 213 on the inner side of the gear ring 29 detects the distance to the surface of the copper rod, thereby measuring the diameter of the outer side of the copper rod. The entire copper rod can now be stretched according to a certain distance to prevent the copper rod from being deformed after drawing due to the large length of the copper rod, thereby improving the quality of drawing. During the drawing, the seventh electric telescopic rod 314 extends, driving the limiting ball 31 to move into the second through hole 36 until the limiting block 310 slides into the third empty slot 33. Then the fifth electric telescopic rod 35 extends, and the fifth electric telescopic rod 35 drives the anti-slide plate to fix the limiting block 310. Then the first winding device 311 and the second winding device 312 wind up and release the connecting rope, thereby driving the limiting ball 31 to move back and forth in the copper rod, and the diameter of the limiting ball 31 is the same as the designed inner diameter of the copper rod, thereby preventing the inner diameter of the copper rod from being less than the predetermined value when the copper rod is drawn, thereby improving the quality of the copper rod after drawing.

[0030] When a section of the copper rod is drawn, the two second motors 23 drive the first fixed body 26 to move. At this time, the first electric telescopic rod 212 and the third electric telescopic rod 217 retract. When the first electric telescopic rod 212 moves a distance of the length of the first fixed body 26, it stops and the first electric telescopic rod 212 and the third electric telescopic rod 217 extend again. At the same time, the first motor 22 is started, and the first motor 22 drives the first threaded rod 21 to rotate. The first threaded rod 21 cooperates to drive the second fixed body 218 to move along the copper rod. When the copper rod moves to the drawn area, the dual-axis electric telescopic rod 220 retracts, driving the arc mold 223 to bend the side of the drawn copper rod into an arc. While the arc mold 223 is plasticizing the copper rod, the limiting ball 31 continues to move back and forth in the copper rod driven by the first winding device 311 and the second winding device 312, which can ensure that the inner side of the copper rod is supported when bending to prevent the inner side from collapsing, and ensure that the inner diameter of the bent copper rod is the same as the designed diameter.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper tube automatic drawing device, comprising a main body plate (1), characterized in that: A working groove (11) is provided at the upper end of the main plate (1), and a drawing and bending mechanism (2) for drawing and bending the copper tube into a mold arc is provided at the upper end of the main plate (1), the drawing and bending mechanism (2) comprises two guide grooves (24) symmetrically provided on the inner side of the main plate (1), the main plate (1) is slidably connected to connecting plates (222) in the two guide grooves (24), the ends of the two connecting plates (222) are fixedly connected to a first fixed body (26), the end of the first fixed body (26) is connected to a second electric telescopic rod (214), the telescopic end of the second electric telescopic rod (214) is fixedly connected to a fixing ring (215), and a movable hole expanding mechanism (3) is provided at the upper end of the main plate (1) for expanding the inner side during drawing and arc bending.

2. The automatic copper tube drawing equipment according to claim 1, characterized in that: The main body plate (1) is fixedly connected to the second motor (23) in the two guide grooves (24), the transmission shaft ends of the two second motors (23) are fixedly connected to the second threaded rods (25), and the two second threaded rods (25) are respectively arranged with the connecting plate (222) through threaded engagement. The main body plate (1) is fixedly connected to the first motor (22) at the lower end of the working groove (11), the transmission shaft end of the first motor (22) is fixedly connected to the first threaded rod (21), and the side surface of the first threaded rod (21) is threadedly engaged with the second fixed body (218), and the lower end surface of the second fixed body (218) is in contact with the end surface of the main body plate (1).

3. The automatic copper tube drawing equipment according to claim 2, characterized in that: The upper end of the second fixed body (218) is fixedly connected to a fourth electric telescopic rod (219), the telescopic end of the fourth electric telescopic rod (219) is fixedly connected to a double-axis electric telescopic rod (220), both ends of the double-axis electric telescopic rod (220) are respectively fixedly connected to support plates (221), and the upper ends of the two support plates (221) are respectively fixedly connected to arc-shaped molds (223).

4. The automatic copper tube drawing equipment according to claim 1, characterized in that: A first through hole (4) is provided through the end of the first fixed body (26), and three first slots (211) arranged at equal angles are provided on the inner side surface of the first fixed body (26) near one end. First electric telescopic rods (212) are respectively connected to the three first slots (211), and the telescopic ends of the three first electric telescopic rods (212) are respectively fixedly connected to anti-slip plates.

5. The automatic copper tube drawing equipment according to claim 1, characterized in that: The inner side surface of the fixing ring (215) is provided with a plurality of second slots (216) arranged at equal angles, and a third electric telescopic rod (217) is fixedly connected to each of the plurality of second slots (216), and the telescopic ends of the plurality of third electric telescopic rods (217) are fixedly connected to an anti-slide plate. The inner side surface of the first fixing body (26) is provided with a first cavity (27), and the first fixing body (26) is connected to a third motor (210) at a position where the first fixing body (26) contacts the first cavity (27). The transmission shaft end of the third motor (210) is fixedly connected to a gear (28), and the first fixing body (26) is rotatably connected to a gear ring (29) in the first cavity (27). The side surface of the gear ring (29) is meshed with the gear (28), and the inner side surface of the gear ring (29) is provided with a distance detector (213) for detecting the thickness of the copper tube.

6. The automatic copper tube drawing equipment according to claim 1, characterized in that: The movable hole-expanding mechanism (3) comprises a second through hole (36) extending through the side of the main body plate (1), a connecting ring (39) being provided in the second through hole (36), a limiting block (310) being slidably provided on the inner side of the connecting ring (39), a first winding device (311) being provided on the upper end surface corresponding to the second through hole (36) of the main body plate (1), a connecting rope in the first winding device (311) being fixedly connected to the end of the limiting block (310), a fifth slot (37) being provided at equal angles on the side of the second through hole (36) of the main body plate (1), a plurality of sixth electric telescopic rods (38) being fixedly connected in the fifth slots (37), and a plurality of telescopic ends of the sixth electric telescopic rods (38) being fixedly connected to anti-slide plates.

7. The automatic copper tube drawing equipment according to claim 6, characterized in that: A third through hole (313) is formed through the side surface of the main body plate (1), a seventh electric telescopic rod (314) is fixedly connected to the main body plate (1) in the third through hole (313), a fourth through hole (315) communicating with the third through hole (313) is formed at the upper end of the main body plate (1), a second winding device (312) is fixedly connected to the upper end of the main body plate (1), a connecting rope in the second winding device (312) passes through the fourth through hole (315) and the third through hole (313), and an end of the connecting rope in the second winding device (312) is fixedly connected to the limiting ball (31).

8. The automatic copper tube drawing equipment according to claim 7, characterized in that: A slot (32) is provided on the side of the limiting ball (31), and the slot (32) is slidably matched with the telescopic end of the seventh electric telescopic rod (314). The limiting ball (31) is provided with a third slot (33) on the side corresponding to the slot (32), and the limiting ball (31) is provided with a fourth slot (34) at an equal angle to the side of the third slot (33). A plurality of the fourth slots (34) are respectively fixedly connected to the fifth electric telescopic rods (35), and a plurality of the telescopic ends of the fifth electric telescopic rods (35) are respectively fixedly connected to the anti-slip plate.

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