Pipe Bending Machine

Abstract

The present invention discloses a pipe bending machine, including a workbench, the bottom of the workbench is fixedly connected with a support leg, the top of the workbench is provided with a mounting groove and a slide groove, the top of the workbench is provided with a driving mechanism for conveying steel pipes and a driven adjustment mechanism for cooperating with the driving mechanism to convey the steel pipes, the driving mechanism is provided with a pipe bending mechanism, the rear end of the top of the workbench is fixedly connected with a steel pipe guide rail for supporting the steel pipe, and the top of the workbench is provided with a heating mechanism between the driven adjustment mechanism and the steel pipe guide rail. The beneficial effects of the present invention are as follows: the present invention is provided with a heating mechanism, and before the steel pipe is bent, the heating mechanism heats the steel pipe, so that the PFA pipe on the steel pipe becomes soft, so that the PFA pipe is easy to lengthen during bending, and the PFA pipe is avoided from being damaged. In addition, the driven adjustment mechanism is used to change the distance from the driving mechanism, so that it is suitable for steel pipes of different diameters, and the applicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe bending equipment, in particular to a pipe bending machine. Background Art

[0002] The wafer cleaning equipment transmission mechanism requires a manipulator to grab the wafer basket. Since various corrosive liquids are used for wafer cleaning, PTFE material must be sprayed on the manipulator and a PFA tube must be covered. For example, the Chinese patent application number is CN202110132615.X, which is a positioning device and positioning method for the transmission mechanism of the wafer cleaning equipment. When processing the support rod used by the manipulator hanging flower basket in the above patent, the straight stainless steel pipe is first cut into a certain length, and then the PTFE material is sprayed on the surface. The PFA tube is then covered on the steel pipe to form a prefabricated straight pipe, and then the prefabricated straight pipe is placed on the bending machine and bent into a U shape. When the current bending machine bends the above prefabricated straight pipe, the steel pipe will form a fillet with a radius of 5-10mm after being bent into a U shape, so that the PFA tube will be elongated, which is easy to cause the PFA tube to break and affect the quality of the finished product. Summary of the invention

[0003] The object of the present invention is to provide a pipe bending machine in order to solve the above problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] The pipe bending machine includes a workbench, the bottom of the workbench is fixedly connected to a support leg, the top of the workbench is provided with a mounting groove and a slide groove, the top of the workbench is provided with a driving mechanism for conveying steel pipes and a driven adjustment mechanism for cooperating with the driving mechanism to convey the steel pipes, the driving mechanism is provided with a pipe bending mechanism, the rear end of the top of the workbench is fixedly connected to a steel pipe guide rail for supporting the steel pipe, and a heating mechanism is provided on the top of the workbench and between the driven adjustment mechanism and the steel pipe guide rail.

[0006] Preferably, the driving mechanism comprises a first motor, the first motor is fixedly connected in the mounting groove of the workbench, the top of the output shaft of the first motor is fixedly connected with a rotating shaft, and the top of the rotating shaft is fixedly connected with a driving guide wheel.

[0007] Preferably, the driven adjustment mechanism includes a slider, which is slidably connected in the slide groove of the workbench, the top of the slider is fixedly connected to a support shaft, the top of the support shaft is connected to a driven guide wheel through a bearing, the slider is threadedly connected to a lead screw, and one end of the lead screw away from the driving mechanism extends out of the slide groove and is fixedly connected to a handle.

[0008] Preferably, the driven guide wheel and the driving guide wheel are arranged symmetrically on the left and right, and the screw rod is connected to the workbench through a bearing.

[0009] Preferably, the pipe bending mechanism includes a rotating seat, which is connected to the rotating shaft through a bearing, a bending arm is fixedly connected to the front side of the rotating seat, a bending block is fixedly connected to the top of the bending arm, a sleeve is fixedly connected to the top of the rotating seat, a worm gear is fixedly connected to the top of the sleeve, a second motor is fixedly connected to the top of the workbench, a worm is fixedly connected to the front end of the output shaft of the second motor, and the worm is meshed with the worm gear.

[0010] Preferably, the rotating shaft passes through the sleeve and the worm wheel, the worm wheel is located below the driving guide wheel, and the bending block is located in front of the driving guide wheel and the driven guide wheel.

[0011] Preferably, the active guide wheel has a diameter of 5-10 mm.

[0012] Preferably, the heating mechanism comprises a support rod, the support rod is fixedly connected to the top of the workbench, a heating plate is fixedly connected to the side of the support rod close to the steel pipe, and an induction heater is arranged inside the heating plate.

[0013] Preferably, the length of the bending block is close to the length of the bent portion of the steel pipe.

[0014] Preferably, the bending block is a semi-cylindrical surface that matches the diameter of the steel pipe, and is also provided with an abutment block identical to the bending block. The abutment block is fixed to the bending block by screws, and after the abutment block is fixed to the bending block, a cylindrical accommodating cavity is formed to accommodate the steel pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a heating mechanism, and before the steel pipe is bent, the heating mechanism heats the steel pipe, so that the PFA tube on the steel pipe becomes soft, thereby making it easy to lengthen the PFA tube during bending, thereby avoiding damage to the PFA tube. In addition, the driven adjustment mechanism is used to change the distance from the driving mechanism, so that it is suitable for steel pipes of different diameters, thereby improving applicability.

[0016] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a three-dimensional diagram of the pipe bending machine of the present invention;

[0019] Figure 2is a front view of the pipe bending machine of the present invention;

[0020] Figure 3 It is a left side view of the pipe bending machine of the present invention;

[0021] Figure 4 is a top view of the pipe bending machine of the present invention;

[0022] Figure 5 It is an enlarged view of the structure at position A of the pipe bending machine of the present invention;

[0023] Figure 6 It is a left view of the internal structure of the sleeve of the pipe bending machine of the present invention;

[0024] Figure 7 is a three-dimensional diagram of the heating mechanism of the pipe bending machine of the present invention;

[0025] Figure 8 It is a stereoscopic diagram of the driven adjustment mechanism of the pipe bending machine described in the present invention.

[0026] The description of the accompanying drawings is as follows: 1. workbench; 101. support leg; 102. mounting groove; 103. slide groove; 2. driving mechanism; 201. first motor; 202. rotating shaft; 203. driving guide wheel; 3. driven adjustment mechanism; 301. slider; 302. support shaft; 303. driven guide wheel; 304. screw; 305. handle; 4. pipe bending mechanism; 401. rotating seat; 402. bending arm; 403. bending block; 404. sleeve; 405. worm gear; 406. worm; 407. second motor; 5. heating mechanism; 501. support rod; 502. heating plate; 503. induction heater; 6. steel pipe guide rail. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Example 1

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] like Figure 1-Figure 8 As shown, the pipe bending machine includes a workbench 1, the bottom of the workbench 1 is fixedly connected with a support leg 101 by bolts, the top of the workbench 1 is provided with a mounting groove 102 and a slide groove 103, the top of the workbench 1 is provided with a driving mechanism 2 for conveying steel pipes and a driven adjustment mechanism 3 for cooperating with the driving mechanism 2 to convey the steel pipes, a pipe bending mechanism 4 is provided on the driving mechanism 2, a steel pipe guide rail 6 for supporting the steel pipe is fixedly connected to the rear end of the top of the workbench 1, a heating mechanism 5 is provided on the top of the workbench 1 and between the driven adjustment mechanism 3 and the steel pipe guide rail 6, and the heating mechanism 5 is used to heat the pfa pipe outside the steel pipe (the heating temperature is about 120-150 degrees Celsius) to soften the pfa pipe, facilitate stretching, and prevent the pfa pipe from being damaged when bending.

[0032] In this embodiment, the driving mechanism 2 includes a first motor 201, which is fixedly connected to the mounting groove 102 of the workbench 1 by bolts. The top of the output shaft of the first motor 201 is fixedly connected to the rotating shaft 202 through a coupling, and the top of the rotating shaft 202 is fixedly connected to the driving guide wheel 203. The rotating shaft 202 is driven to rotate by the first motor 201, so that the driving guide wheel 203 transports the steel pipe. The main steps are: placement-conveying-heating-conveying-bending-conveying-heating-bending.

[0033] In this embodiment, the driven adjustment mechanism 3 includes a slider 301, which is slidably connected to the slide groove 103 of the workbench 1. A support shaft 302 is fixedly welded to the top of the slider 301, and a driven guide wheel 303 is connected to the top of the support shaft 302 through a bearing. A screw rod 304 is threadedly connected to the slider 301, and one end of the screw rod 304 away from the driving mechanism 2 extends out of the slide groove 103 and is fixedly connected to a handle 305. The screw rod 304 is rotated by the handle 305, and the screw rod 304 drives the slider 301 to move, thereby adjusting the position of the driven guide wheel 303 to adapt to steel pipes of different diameters.

[0034] In this embodiment, the driven guide wheel 303 and the driving guide wheel 203 are arranged symmetrically on the left and right, the screw rod 304 is connected to the workbench 1 through a bearing, and the diameter of the driving guide wheel 203 is 5-10 mm.

[0035] In this embodiment, the pipe bending mechanism 4 includes a rotating seat 401, which is connected to the rotating shaft 202 through a bearing, a bending arm 402 is fixedly welded on the front side of the rotating seat 401, a bending block 403 is fixedly welded on the top of the bending arm 402, a sleeve 404 is fixedly welded on the top of the rotating seat 401, a worm gear 405 is fixedly connected to the top of the sleeve 404, a second motor 407 is fixedly connected to the top of the workbench 1 by bolts, a worm 406 is fixedly connected to the front end of the output shaft of the second motor 407 through a coupling, the worm 406 is meshed with the worm gear 405, the worm 406 is driven to rotate by the second motor 407, and the worm 406 drives the worm wheel 405 to rotate, thereby achieving a deceleration and increase effect, and the worm gear 405 drives the sleeve 404 and the rotating seat 401 to rotate, so that the bending arm 402 and the bending block 403 rotate to bend the steel pipe.

[0036] In this embodiment, the rotating shaft 202 passes through the sleeve 404 and the worm wheel 405 to prevent the rotating shaft 202 from driving the sleeve 404 and the worm wheel 405 to rotate. The worm wheel 405 is located below the driving guide wheel 203, and the bending block 403 is located in front of the driving guide wheel 203 and the driven guide wheel 303.

[0037] In this embodiment, the heating mechanism 5 includes a support rod 501, which is fixedly connected to the top of the workbench 1. A heating plate 502 is fixedly connected to the side of the support rod 501 close to the steel pipe. A plurality of induction heaters 503 are arranged in the heating plate 502. The induction heaters 503 are powered on for heating. When the steel pipe passes through one side of the heating plate 502, the induction heater 503 heats the steel pipe (the heat of the steel pipe is transferred to the PFA on the surface), so that the PFA (a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene) pipe outside the steel pipe is heated and softened. In order to improve safety, a cover can be provided outside the heating mechanism 5 to cover the heating mechanism 5 and the heated steel pipe part. In addition, after heating, the steel pipe should be sent forward so that the heated part reaches the driven guide wheel 303 and the active guide wheel 203. The heating temperature of the induction heating is fast and there is no need to contact the heater.

[0038] Working principle: When in use, the prefabricated straight steel pipe is placed on the steel pipe guide rail 6 and sent between the active guide wheel 203 and the driven guide wheel 303. The first motor 201 drives the rotating shaft 202 to rotate, and the rotating shaft 202 drives the active guide wheel 203 to rotate to transport the steel pipe. At the same time, the induction heater 503 in the heating plate 502 is energized, and the induction heater 503 heats the steel pipe to soften the PFA tube outside the steel pipe. When the steel pipe is transported to a suitable length, the second motor 407 is started, and the second motor 407 drives the worm 406 to rotate, and the worm 406 drives the worm wheel 405 to rotate. The worm gear 405 drives the sleeve 404 to rotate, the sleeve 404 drives the rotating seat 401 to rotate, the rotating seat 401 drives the bending arm 402 and the bending block 403 to rotate, and the bending block 403 bends the steel pipe. Since the PFA pipe becomes soft after heating, the PFA pipe has a certain extensibility when bending, thereby avoiding the damage of the PFA pipe. When bending steel pipes of different diameters, the screw rod 304 is rotated by the handle 305, and the screw rod 304 drives the slider 301 to move, thereby adjusting the distance between the driven guide wheel 303 and the active guide wheel 203, so as to facilitate the removal of the steel pipe.

[0039] In order to prevent the steel pipe from bending after bending (due to the deformation characteristics of the steel pipe itself, there will be a slight bulge in the middle), the length of the bending block 403 is close to the length of the bent part of the steel pipe, so that the entire bent pipe is evenly stressed. The bending block 403 is a semi-cylindrical surface, which matches the diameter of the steel pipe. Furthermore, a support block identical to the bending block 403 is also provided, and the support block is fixed to the bending block 403 by screws, and the support block and the bending block 403 are fixed to form a cylindrical accommodating cavity for accommodating the steel pipe.

[0040] A method for producing a support rod for a wafer transport robot hanging basket comprises the following steps:

[0041] S1: Take a straight stainless steel tube and cut it into the required size, spray PTFE (polytetrafluoroethylene) material on the surface, and then form a prefabricated straight tube with a PFA tube on the outside;

[0042] S2: placing the prefabricated straight pipe on the pipe bending machine of Example 1 and bending it into a U shape (bending it twice in sequence).

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A pipe bending machine, comprising a workbench (1), wherein a support leg (101) is fixedly connected to the bottom of the workbench (1), characterized in that: The top of the workbench (1) is provided with a mounting groove (102) and a slide groove (103); the top of the workbench (1) is provided with a driving mechanism (2) for conveying steel pipes and a driven adjustment mechanism (3) for cooperating with the driving mechanism (2) to convey the steel pipes; the driving mechanism (2) is provided with a pipe bending mechanism (4); the rear end of the top of the workbench (1) is fixedly connected with a steel pipe guide rail (6) for supporting the steel pipe; the top of the workbench (1) is provided with a heating mechanism (5) between the driven adjustment mechanism (3) and the steel pipe guide rail (6); The driving mechanism (2) comprises a first motor (201), the first motor (201) being fixedly connected in the mounting groove (102) of the workbench (1), the top of the output shaft of the first motor (201) being fixedly connected to a rotating shaft (202), and the top of the rotating shaft (202) being fixedly connected to a driving guide wheel (203); The driven adjustment mechanism (3) comprises a slider (301), the slider (301) is slidably connected in the slide groove (103) of the workbench (1), the top of the slider (301) is fixedly connected with a support shaft (302), the top of the support shaft (302) is connected with a driven guide wheel (303) via a bearing, the slider (301) is connected with a screw rod (304) via a thread, and one end of the screw rod (304) away from the driving mechanism (2) extends out from the slide groove (103) and is fixedly connected with a handle (305); The pipe bending mechanism (4) comprises a rotating seat (401), the rotating seat (401) is connected to the rotating shaft (202) via a bearing, a bending arm (402) is fixedly connected to the front side of the rotating seat (401), a bending block (403) is fixedly connected to the top of the bending arm (402), a sleeve (404) is fixedly connected to the top of the rotating seat (401), a worm gear (405) is fixedly connected to the top of the sleeve (404), a second motor (407) is fixedly connected to the top of the workbench (1), a worm (406) is fixedly connected to the front end of the output shaft of the second motor (407), and the worm gear (406) is meshed with the worm gear (405); The rotating shaft (202) passes through the sleeve (404) and the worm wheel (405) to prevent the rotating shaft (202) from driving the sleeve (404) and the worm wheel (405) to rotate. The worm wheel (405) is located below the driving guide wheel (203), and the bending block (403) is located in front of the driving guide wheel (203) and the driven guide wheel (303).

2. The pipe bending machine according to claim 1, characterized in that: The driven guide wheel (303) and the driving guide wheel (203) are arranged symmetrically on the left and right, and the screw rod (304) is connected to the workbench (1) via a bearing.

3. The pipe bending machine according to claim 1, characterized in that: The active guide wheel (203) has a diameter of 5-10 mm.

4. The pipe bending machine according to claim 1, characterized in that: The length of the bending block (403) is close to the length of the bent portion of the steel pipe.

5. The pipe bending machine according to claim 4, characterized in that: The bending block (403) is a semi-cylindrical surface that matches the diameter of the steel pipe. A support block identical to the bending block (403) is also provided. The support block is fixed to the bending block (403) by screws, and after the support block and the bending block (403) are fixed, a cylindrical accommodating cavity for accommodating the steel pipe is formed.

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