Condenser tube row sawing unit and sawing method thereof

Abstract

The present invention relates to a condenser tube row sawing unit, comprising a base, a material-carrying electric roller conveyor is arranged on the base, the material-carrying electric roller conveyor moves the condenser tube row to be processed horizontally to the left and right, a vertical band saw machine main unit for sawing the tube heads at both ends of the condenser tube row and a tube head beveling machine for chamfering the sawed tube heads are arranged on the left and right sides of the material-carrying electric roller conveyor, respectively, the vertical band saw machine main unit and the tube head beveling machine are both arranged on the base, a longitudinal feed driving device and a longitudinal feed guide pair are respectively arranged between the base and the base, and the base and the vertical band saw machine main unit and the tube head beveling machine thereon move along the longitudinal feed guide pair under the drive of the longitudinal feed driving device. The present invention also discloses a method for sawing the condenser tube row using the condenser tube row sawing unit. The processing quality of the present invention is stable, the processing accuracy is guaranteed, and the processing efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of band sawing machines, and in particular relates to a condenser tube row sawing unit and a sawing method thereof. Background Art

[0002] The redundant pipe joints on the left and right ends of the condenser pipe row need to be processed and removed, and the edges of the condenser pipe joints need to be chamfered (also known as grooves). The existing condenser pipe row ends (or pipe heads) are manually processed to remove the excess and groove processing of the pipe joints, which is not only inefficient, but also the processing quality and processing accuracy of the excess removal cannot be guaranteed, and the groove processing quality cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a condenser tube row sawing unit and a sawing method thereof, which can complete the tube head excess removal processing and tube row joint groove processing of the condenser tube row by one clamping of the processing equipment, with stable processing quality, guaranteed processing accuracy and high processing efficiency.

[0004] The present invention is implemented in this way, providing a condenser tube row sawing unit, including a base, on which a material-carrying electric roller is arranged to carry and transport the condenser tube row to be processed, the material-carrying electric roller moves the condenser tube row horizontally to the left and right, and a plurality of tube row side pushing devices are arranged on the material-carrying electric roller, and the plurality of tube row side pushing devices are simultaneously operated to longitudinally push the condenser tube row placed on the material-carrying electric roller from the rear end of the material-carrying electric roller to the front end thereof and clamp it, and a plurality of tube row side pushing devices are respectively arranged at the left and right ends of the material-carrying electric roller. A vertical clamping mechanism is provided, on the left and right sides of the material-carrying electric roller, a vertical band saw main machine for sawing the tube heads at both ends of the condenser tube row and a tube head beveling machine for chamfering the sawed tube heads are arranged opposite to each other, the vertical band saw main machine and the tube head beveling machine are both arranged on a base, a longitudinal feed drive device and a longitudinal feed guide pair are respectively arranged between the base and the pedestal, the base and the vertical band saw main machine and the tube head beveling machine thereon move along the longitudinal feed guide pair under the drive of the longitudinal feed drive device.

[0005] Furthermore, the tube row side push device includes a tube row side push drive mechanism, a tube row side push roller and a tube row positioning roller, the tube row side push roller is arranged at the rear end of the material-bearing electric roller conveyor, the tube row positioning roller is arranged at the front end of the material-bearing electric roller conveyor, and the tube row side push drive mechanism drives the tube row side push roller to move toward the tube row positioning roller and clamps the condenser tube row between the tube row side push roller and the tube row positioning roller.

[0006] Furthermore, the longitudinal feed drive device includes a longitudinal feed drive motor, a feed drive gear and a feed rack, the longitudinal feed drive motor is arranged on the base, the feed rack is arranged on the pedestal, and the longitudinal feed drive motor drives the feed drive gear to roll on the feed rack.

[0007] Furthermore, the longitudinal feed guide pair includes a feed slider and a feed linear guide that slide against each other, the feed slider is arranged at the bottom of the base, and the feed linear guide is arranged on the pedestal.

[0008] Furthermore, an optical vision tool setting mechanism is arranged on the vertical band saw main machine.

[0009] Furthermore, a machine vision tool setting device is provided on the pipe head beveling machine.

[0010] Furthermore, a chain plate type chip removal unit is also arranged on the side of the base.

[0011] The present invention is implemented by providing a method for sawing a condenser tube row, using the condenser tube row sawing unit as described above to saw the tube heads at both ends of the condenser tube row, and then chamfering the sawed tube heads, comprising the following steps:

[0012] Step 1: Place the condenser tube row to be processed on the material receiving electric roller, and multiple tube row side pushing devices simultaneously push the condenser tube row longitudinally to the front end reference of the material receiving electric roller and clamp the condenser tube row front and back;

[0013] Step 2: The condenser tube row moves to the left to the set position on the material-carrying electric roller conveyor, and the vertical pressing mechanism located at the left end of the material-carrying electric roller conveyor is activated to press the condenser tube row up and down;

[0014] Step 3: The main machine of the vertical band sawing machine located on the left side base of the material-carrying electric roller conveyor is driven by its longitudinal feed driving device to move along the longitudinal feed guide rail pair on this side, and the tube head at the left end of the condenser tube row is sawed off from its front end to the rear end;

[0015] Step 4: The base on the left side quickly retreats to the initial front end position of the longitudinal feed guide pair on that side, and then the pipe head beveling machine located on the left side base of the material-carrying electric roller table moves to chamfer the edge of the sawed pipe head;

[0016] Step 5: Loosen the vertical clamping mechanism at the left end of the material-carrying electric roller, and the material-carrying electric roller moves in the opposite direction to its right end, and moves the condenser tube row to the right to the set position. The vertical clamping mechanism at the right end of the material-carrying electric roller moves to clamp the condenser tube row up and down;

[0017] Step 6: The main machine of the vertical band saw located on the right side of the base of the material-carrying electric roller conveyor moves along the longitudinal feed guide pair on this side under the drive of its longitudinal feed drive device, and saws off the tube head at the right end of the condenser tube row from its front end to the rear end;

[0018] Step 7: The base on the right side quickly retreats to the initial front end position of the longitudinal feed guide pair on that side, and then the pipe head beveling machine located on the right side base of the material-carrying electric roller table moves to chamfer the edge of the sawed pipe head;

[0019] Step 8: Loosen the vertical clamping mechanism at the right end of the material-carrying electric roller conveyor, and remove the condenser tube row with both ends processed from the material-carrying electric roller conveyor.

[0020] Furthermore, step one also includes drawing lines on the left and right ends of the condenser tube row to mark the sawing position.

[0021] Compared with the prior art, the condenser tube row sawing unit and sawing method of the present invention include a base, on which a material-carrying electric roller is arranged, and the material-carrying electric roller moves the condenser tube row to be processed horizontally to the left and right, and on the left and right sides of the material-carrying electric roller, a vertical band saw machine main unit for sawing the tube heads at both ends of the condenser tube row and a tube head beveling machine for chamfering the sawed tube heads are arranged relatively, respectively, and the vertical band saw machine main unit and the tube head beveling machine are both arranged on the base, and a longitudinal feed drive device and a longitudinal feed guide pair are respectively arranged between the base and the base, and the base and the vertical band saw machine main unit and the tube head beveling machine thereon move along the longitudinal feed guide pair under the drive of the longitudinal feed drive device. The removal of the joint surplus at the left and right ends of the condenser tube row and the chamfering of the edge of the sawed tube head can be completed by one clamping, and the processing quality is stable, the processing accuracy is guaranteed, and the processing efficiency is high. The processing efficiency of the condenser tube row sawing unit and the sawing method thereof of the present invention is increased by 50%, and the first-time qualified rate is increased by 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a preferred embodiment of the condenser tube row sawing unit of the present invention;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 for Figure 2 Schematic diagram of the MM cross section. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Please also refer to Figure 1 , Figure 2 as well as Figure 3 As shown, a preferred embodiment of the condenser tube row sawing unit of the present invention comprises a base 1, on which a material receiving electric roller 2 for carrying and conveying the condenser tube row A to be processed is arranged. The material receiving electric roller 2 moves the condenser tube row A horizontally to the left and right. Some condenser tube rows A have an overall dimension length ranging from 3000 mm to 17000 mm and a width ranging from 1500 mm to 3800 mm.

[0027] A plurality of tube row side pushing devices 3 are arranged on the material receiving electric roller 2. The plurality of tube row side pushing devices 3 are simultaneously operated to longitudinally push the condenser tube row A placed on the material receiving electric roller 2 from the rear end of the material receiving electric roller 3 to the front end thereof and clamp it. Vertical clamping mechanisms 4 are respectively arranged at the left and right ends of the material receiving electric roller 2. The vertical clamping mechanism 4 includes a hydraulic cylinder 41, a pressing plate 42 and a guide mechanism 43. The hydraulic cylinder 41 drives the pressing plate 42 to move up and down under the guidance of the guide mechanism 43.

[0028] A vertical band saw machine main unit 5 for sawing the tube heads at both ends of the condenser tube row A and a tube head beveling machine 6 for chamfering the sawed tube heads are arranged on the left and right sides of the material receiving electric roller conveyor 2. The vertical band saw machine main unit 5 and the tube head beveling machine 6 are both arranged on a base 7. The vertical band saw machine main unit 5 includes a saw frame, a main transmission mechanism and an active saw wheel, a saw blade tensioning and a driven saw wheel, a saw blade guiding mechanism, and a sawing cooling and lubrication system. The tube head beveling machine 6 is provided with a rotary cutter head for processing chamfering controlled by a robot.

[0029] A longitudinal feed drive device 8 and a longitudinal feed guide rail pair 9 are respectively arranged between the base 7 and the pedestal 1. The base 7 and the vertical band saw machine main unit 5 and the pipe head beveling machine 6 thereon move along the longitudinal feed guide rail pair 9 under the drive of the longitudinal feed drive device 8.

[0030] The tube row side push device 3 includes a tube row side push driving mechanism 31, a tube row side push roller 32 and a tube row positioning roller 33. The tube row side push roller 33 is arranged at the rear end of the material receiving electric roller conveyor 2, and the tube row positioning roller 33 is arranged at the front end of the material receiving electric roller conveyor 2. The tube row side push driving mechanism 31 drives the tube row side push roller 32 to move toward the tube row positioning roller 33 and clamps the condenser tube row A between the tube row side push roller 32 and the tube row positioning roller 33.

[0031] The longitudinal feed drive device 8 includes a longitudinal feed drive motor 81, a feed drive gear 82 and a feed rack 83. The longitudinal feed drive motor 81 is arranged on the base 7, and the feed rack 83 is arranged on the base 1. The longitudinal feed drive motor 81 drives the feed drive gear 82 to roll on the feed rack 83, thereby driving the base 7 to move along the longitudinal feed guide rail pair 9.

[0032] The longitudinal feed guide rail pair 9 includes a feed slider 91 and a feed linear guide rail 92 that slide against each other. The feed slider 91 is arranged at the bottom of the base 7, and the feed linear guide rail 92 is arranged on the base 1.

[0033] An optical vision tool setting mechanism 51 is provided on the vertical band saw machine main unit 5. The optical vision tool setting mechanism 51 includes a high-definition digital camera and control software. When working, the sawing position mark is pre-marked on the condenser tube row A, and the condenser tube row A is moved into the working range of the high-definition digital camera through the material-carrying electric roller 2. The control software controls the material-carrying electric roller 2 to automatically align the sawing position of the vertical band saw machine main unit 5.

[0034] A machine vision tool setting device 61 is provided on the pipe head beveling machine 6 .

[0035] A chain plate type chip removal unit 10 is also provided on the side of the base 7. The chain plate type chip removal unit 10 collects the debris generated by sawing and beveling.

[0036] The present invention is implemented by providing a method for sawing a condenser tube row, using the condenser tube row sawing unit as described above to saw the tube heads at both ends of the condenser tube row A, and then chamfering the sawed tube heads, comprising the following steps:

[0037] Step 1: Place the condenser tube row A to be processed on the material-carrying electric roller 2. Multiple tube row side pushing devices 3 simultaneously push the condenser tube row A longitudinally to the front end reference of the material-carrying electric roller 2 and clamp the condenser tube row A front and back.

[0038] Step 2: The condenser tube row A moves leftward to the set position on the material-carrying electric roller conveyor 2, and the vertical clamping mechanism 4 located at the left end of the material-carrying electric roller conveyor 2 is activated to press the condenser tube row A up and down on the material-carrying electric roller conveyor 2.

[0039] Step 3: The vertical band saw machine main unit 5 located on the left side base 7 of the material-carrying electric roller table 2 is driven by its longitudinal feed drive device 8 to move along the longitudinal feed guide rail pair 9 on this side to saw off the tube head at the left end of the condenser tube row A from its front end to the rear end.

[0040] Step 4: The base 7 on the left side of the material-carrying electric roller 2 is driven by the longitudinal feed drive device 8 on this side to quickly retreat to the front end initial position of the longitudinal feed guide pair 9 on this side, and then the pipe head beveling machine 6 located on the left side base 7 of the material-carrying electric roller 2 is activated to chamfer the edge of the sawed pipe head.

[0041] Step 5: Loosen the vertical clamping mechanism 4 at the left end of the material-carrying electric roller 2, and the material-carrying electric roller 2 moves in the opposite direction to its right end, and moves the condenser tube row A to the right to the set position. The vertical clamping mechanism 4 at the right end of the material-carrying electric roller 2 is activated to press the condenser tube row A up and down on the material-carrying electric roller 2.

[0042] Step 6: The vertical band saw machine main unit 5 located on the right side base 7 of the material-carrying electric roller table 2 is driven by its longitudinal feed drive device 8 to move along the longitudinal feed guide rail pair 9 on this side to saw off the tube head at the right end of the condenser tube row A from its front end to the rear end.

[0043] Step seven: The base 7 on the right side of the material-carrying electric roller 2 is driven by the longitudinal feed drive device 8 on this side to quickly retreat to the front end initial position of the longitudinal feed guide pair 9 on this side, and then the pipe head beveling machine 6 located on the right side base 7 of the material-carrying electric roller 2 is activated to chamfer the edge of the sawed pipe head.

[0044] Step 8: Loosen the vertical clamping mechanism 4 located at the right end of the material-carrying electric roller conveyor 2, and remove the condenser tube row A with both ends processed from the material-carrying electric roller conveyor 2.

[0045] Step 1 also includes drawing lines on the left and right ends of the condenser tube row A to mark the sawing positions.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for sawing a condenser tube row, characterized in that: A condenser tube row sawing unit is used to saw the tube heads at both ends of the condenser tube row, and the sawed tube heads are further chamfered. The condenser tube row sawing unit includes a base, on which a material-carrying electric roller for carrying and conveying the condenser tube row to be processed is arranged. The material-carrying electric roller moves the condenser tube row horizontally left and right, and a plurality of tube row side pushing devices are arranged on the material-carrying electric roller. The plurality of tube row side pushing devices are simultaneously actuated to longitudinally push the condenser tube row placed on the material-carrying electric roller from the rear end of the material-carrying electric roller to the front end thereof and clamp it, and The left and right ends of the material-carrying electric roller conveyor are respectively provided with vertical clamping mechanisms, and the left and right sides of the material-carrying electric roller conveyor are respectively provided with a vertical band saw machine main unit for sawing the tube heads at both ends of the condenser tube row and a tube head beveling machine for chamfering the sawed tube heads. The vertical band saw machine main unit and the tube head beveling machine are both provided on a base, and a longitudinal feed driving device and a longitudinal feed guide pair are respectively provided between the base and the pedestal. The base and the vertical band saw machine main unit and the tube head beveling machine thereon move along the longitudinal feed guide pair under the drive of the longitudinal feed driving device; The method comprises the following steps: Step 1: Place the condenser tube row to be processed on the material receiving electric roller, and multiple tube row side pushing devices simultaneously push the condenser tube row longitudinally to the front end reference of the material receiving electric roller and clamp the condenser tube row front and back; Step 2: The condenser tube row moves to the left to the set position on the material-carrying electric roller conveyor, and the vertical pressing mechanism located at the left end of the material-carrying electric roller conveyor is activated to press the condenser tube row up and down; Step 3: The main machine of the vertical band sawing machine located on the left side base of the material-carrying electric roller conveyor is driven by its longitudinal feed driving device to move along the longitudinal feed guide rail pair on this side, and the tube head at the left end of the condenser tube row is sawed off from its front end to the rear end; Step 4: The base on the left side quickly retreats to the initial front end position of the longitudinal feed guide pair on that side, and then the pipe head beveling machine located on the left side base of the material-carrying electric roller table moves to chamfer the edge of the sawed pipe head; Step 5: Loosen the vertical clamping mechanism at the left end of the material-carrying electric roller, and the material-carrying electric roller moves in the opposite direction to its right end, and moves the condenser tube row to the right to the set position. The vertical clamping mechanism at the right end of the material-carrying electric roller moves to clamp the condenser tube row up and down; Step 6: The main machine of the vertical band saw located on the right side of the base of the material-carrying electric roller conveyor moves along the longitudinal feed guide pair on this side under the drive of its longitudinal feed drive device, and saws off the tube head at the right end of the condenser tube row from its front end to the rear end; Step 7: The base on the right side quickly retreats to the initial front end position of the longitudinal feed guide pair on that side, and then the pipe head beveling machine located on the right side base of the material-carrying electric roller table moves to chamfer the edge of the sawed pipe head; Step 8: Loosen the vertical clamping mechanism at the right end of the material-carrying electric roller conveyor, and remove the condenser tube row with both ends processed from the material-carrying electric roller conveyor.

2. The method for sawing a condenser tube row according to claim 1, characterized in that: Step one also includes drawing lines on the left and right ends of the condenser tube row to mark the sawing positions.

3. The method for sawing a condenser tube row according to claim 1, characterized in that: The tube row side push device includes a tube row side push driving mechanism, a tube row side push roller and a tube row positioning roller. The tube row side push roller is arranged at the rear end of the material-bearing electric roller conveyor, and the tube row positioning roller is arranged at the front end of the material-bearing electric roller conveyor. The tube row side push driving mechanism drives the tube row side push roller to move toward the tube row positioning roller and clamps the condenser tube row between the tube row side push roller and the tube row positioning roller.

4. The method for sawing a condenser tube row according to claim 1, characterized in that: The longitudinal feed drive device includes a longitudinal feed drive motor, a feed drive gear and a feed rack. The longitudinal feed drive motor is arranged on a base, and the feed rack is arranged on a pedestal. The longitudinal feed drive motor drives the feed drive gear to roll on the feed rack.

5. The method for sawing a condenser tube row according to claim 1, characterized in that: The longitudinal feed guide rail pair comprises a feed slider and a feed linear guide rail which slide against each other, the feed slider is arranged at the bottom of the base, and the feed linear guide rail is arranged on the pedestal.

6. The method for sawing a condenser tube row according to claim 1, characterized in that: An optical vision tool setting mechanism is arranged on the main machine of the vertical band saw machine.

7. The method for sawing a condenser tube row according to claim 1, characterized in that: A machine vision tool setting device is arranged on the pipe head beveling machine.

8. The method for sawing a condenser tube row according to claim 1, characterized in that: A chain plate type chip removal unit is also arranged on the side of the base.

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