Condenser header sawing unit and sawing method thereof

Abstract

The present invention relates to a condenser header sawing unit, comprising a unit seat and a header seat, an adjustment base is arranged on the unit seat, a vertical band saw machine mainframe is arranged on the adjustment base, a base transverse feed driving device and a base transverse feed guide pair are arranged between the unit seat and the adjustment base, and a saw machine longitudinal feed driving device and a saw machine longitudinal feed guide pair are arranged between the adjustment base and the vertical band saw machine mainframe; a fixed lifting mechanism and a movable lifting mechanism are arranged at the left and right ends of the header seat, a vertical clamping mechanism and a supporting fixture are arranged on the fixed lifting mechanism and the movable lifting mechanism, and the two ends of the condenser header to be processed are placed on the supporting fixtures, and then are clamped by two vertical clamping mechanisms. The present invention also discloses a method for sawing a condenser header using the condenser header 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 header sawing unit and a sawing method thereof. Background Art

[0002] There are multiple rows of pipes radially distributed on the side of the condenser header. During the assembly process of the condenser header, the excess ends (or pipe heads) of the pipes need to be removed. The removal of the excess ends of the existing condenser headers is generally done manually, which is not only inefficient, but also the processing quality and accuracy of the excess removal cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a condenser header sawing unit and a sawing method thereof, which can complete the tube head excess removal processing of the condenser header 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 header sawing unit, comprising a unit base and a header base which are separately arranged, an adjustment base is arranged on the unit base, a vertical band saw machine main unit is arranged on the adjustment base, a base transverse feed driving device and a base transverse feed guide pair are respectively arranged between the unit base and the adjustment base, the adjustment base moves along the base transverse feed guide pair under the drive of the base transverse feed driving device, a saw machine longitudinal feed driving device and a saw machine longitudinal feed guide pair are respectively arranged between the adjustment base and the vertical band saw machine main unit, and the vertical band saw machine main unit moves along the saw machine longitudinal feed driving device when the saw machine is longitudinally fed. Driven by the driving device, it moves longitudinally along the longitudinal feed guide pair of the sawing machine to the position of the collection seat; a fixed lifting mechanism is arranged at the left end of the collection seat in the length direction, a box seat guide rail is arranged on the top surface of the collection seat, and a movable lifting mechanism is arranged on the box seat guide rail. The movable lifting mechanism slides on the box seat guide rail, and a vertical clamping mechanism and a supporting clamp are respectively arranged on the fixed lifting mechanism and the mobile lifting mechanism. The two end heads of the condenser collection box to be processed are respectively placed on the supporting clamps on the fixed lifting mechanism and the mobile lifting mechanism, and then are respectively clamped by the two vertical clamping mechanisms.

[0005] Furthermore, the base transverse feed drive device includes a transverse feed motor, a transverse feed gear and a transverse feed rack. The transverse feed motor is arranged on the adjustment base, the transverse feed rack is arranged on the unit base, and the transverse feed motor drives the transverse feed gear to roll on the transverse feed rack.

[0006] Furthermore, the base transverse feed guide pair includes a transverse feed slider and a transverse feed linear guide that slide against each other, the transverse feed slider is arranged at the bottom of the adjustment base, and the transverse feed linear guide is arranged on the unit seat.

[0007] Furthermore, the longitudinal feed drive device of the sawing machine includes a longitudinal feed motor, a feed ball screw and a feed screw seat, the longitudinal feed motor is fixed on the adjustment base, the feed screw seat is fixed on the bottom of the vertical band saw machine main unit, and the longitudinal feed motor drives the feed ball screw to rotate in the feed screw seat, thereby driving the vertical band saw machine main unit to move longitudinally along the longitudinal feed guide rail pair of the sawing machine.

[0008] Furthermore, the sawing machine longitudinal feed guide pair includes a longitudinal feed slider and a longitudinal feed linear guide that slide against each other, the longitudinal feed slider is arranged at the bottom of the vertical band sawing machine mainframe, and the longitudinal feed linear guide is arranged on the adjustment base.

[0009] The present invention is implemented by providing a method for sawing a condenser header, using the condenser header sawing unit as described above to saw the ends of the row pipes of the condenser header, comprising the following steps:

[0010] The first step: placing the condenser header to be processed on the support fixtures on the fixed lifting mechanism and the mobile lifting mechanism of the header seat, driving the vertical pressing mechanism to press the condenser header on the support fixture, and adjusting the height of the condenser header relative to the main machine of the vertical band saw through the fixed lifting mechanism and the mobile lifting mechanism;

[0011] The second step: start the sawing machine longitudinal feed drive device, adjust the vertical band sawing machine main unit on the base and drive it along the sawing machine longitudinal feed guide pair to the position where the condenser header is located to the sawing position;

[0012] Step 3: The main machine of the vertical band sawing machine moves laterally along the transverse feed guide rail pair of the base under the drive of the transverse feed drive device of the base, and moves from the initial sawing position on the left side of the header seat to the right side of the header seat to complete the sawing process of the row pipes on one side of the condenser header seat;

[0013] Step 4: The main machine of the vertical band saw returns to the initial position of sawing, releases the vertical clamping mechanism, and takes out the processed condenser header.

[0014] Furthermore, the first step also includes marking lines on the condenser header to indicate sawing positions.

[0015] Compared with the prior art, the condenser header sawing unit and sawing method of the present invention respectively set a vertical band saw machine main unit and a condenser header to be processed on a unit seat and a header seat that are separately arranged. The vertical band saw machine main unit is placed on an adjustment base. The vertical band saw machine main unit adjusts the distance with the condenser header longitudinally and removes the excess of the side pipe head of the condenser header laterally. The processing quality of the present invention is stable, the processing accuracy is guaranteed, and the processing efficiency is high. The processing efficiency of the condenser header sawing unit and sawing method of the present invention is increased by 50%, and the first-time qualified rate is increased by 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of a preferred embodiment of the condenser header sawing unit of the present invention;

[0017] Figure 2 for Figure 1 Left view of

[0018] Figure 3 for Figure 1 Enlarged schematic diagram of the middle M part. DETAILED DESCRIPTION

[0019] 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.

[0020] Please also refer to Figure 1 , Figure 2 as well as Figure 3 As shown, a preferred embodiment of the condenser header sawing unit of the present invention comprises a unit base 1 and a header base 2 which are separately arranged. An adjustment base 3 is arranged on the unit base 1. A vertical band saw machine main unit 4 is arranged on the adjustment base 3. The vertical band saw machine main unit 4 comprises a saw frame 41, a main transmission mechanism and an active saw wheel 42, a saw blade tensioning and driven saw wheel 43, a saw blade guide mechanism 44, and a sawing cooling and lubrication system.

[0021] A base transverse feed drive device 5 and a base transverse feed guide pair 6 are respectively arranged between the unit seat 1 and the adjustment base 3. The adjustment base 3 moves along the base transverse feed guide pair 6 under the drive of the base transverse feed drive device 5. A sawing machine longitudinal feed drive device 7 and a sawing machine longitudinal feed guide pair 8 are respectively arranged between the adjustment base 3 and the vertical band sawing machine main machine 4. The vertical band sawing machine main machine 4 moves longitudinally along the sawing machine longitudinal feed guide pair 8 toward the location of the collection box seat 2 under the drive of the sawing machine longitudinal feed drive device 7.

[0022] A fixed lifting mechanism 9 is provided at the left end in the length direction of the collecting box seat 2, a box seat guide rail 11 is provided on the top surface of the collecting box seat 2, and at least one mobile lifting mechanism 10 is provided on the box seat guide rail 11. The mobile lifting mechanism 10 slides on the box seat guide rail 11. A vertical clamping mechanism 12 and a supporting fixture 13 are provided on the fixed lifting mechanism 9 and the mobile lifting mechanism 10, respectively. The two ends of the condenser collecting box A to be processed are respectively placed on the supporting fixtures 13 on the fixed lifting mechanism 9 and the mobile lifting mechanism 10, and then respectively clamped by the two vertical clamping mechanisms 12. One end of the vertical clamping mechanism 12 rotates around the fixed pin shaft and is clamped on the fixed lifting mechanism 9 or the mobile lifting mechanism 10.

[0023] The fixed lifting mechanism 9 and the mobile lifting mechanism 10 respectively adjust the height of the condenser header A relative to the vertical band saw machine main unit 4. The mobile lifting mechanism 10 is used to assist in supporting the condenser header A to be processed to meet the processing needs of condenser headers A of different lengths. A roller 14 is installed at the lower end of the mobile lifting mechanism 10, which can move horizontally left and right along the box seat guide rail 11, and the position is manually adjusted and locked according to the length of the condenser header.

[0024] The base transverse feed driving device 5 includes a transverse feed motor 51, a transverse feed gear 52 and a transverse feed rack 53. The transverse feed motor 51 is arranged on the adjustment base 3, and the transverse feed rack 53 is arranged on the unit base 1. The transverse feed motor 51 drives the transverse feed gear 52 to roll on the transverse feed rack 53, thereby driving the adjustment base 3 to move transversely along the base transverse feed guide rail pair 6.

[0025] The base transverse feed guide pair 6 includes a transverse feed slider 61 and a transverse feed linear guide 62 that slide against each other. The transverse feed slider 61 is arranged at the bottom of the adjustment base 3, and the transverse feed linear guide 62 is arranged on the unit base 1.

[0026] The sawing machine longitudinal feed drive device 7 comprises a longitudinal feed motor 71, a feed ball screw 72 and a feed screw seat 73. The longitudinal feed motor 71 is fixed on the adjustment base 3, and the feed screw seat 73 is fixed on the bottom of the vertical band sawing machine mainframe 4. The longitudinal feed motor 71 drives the feed ball screw 72 to rotate in the feed screw seat 73, thereby driving the vertical band sawing machine mainframe 4 to move longitudinally along the sawing machine longitudinal feed guide rail pair 8.

[0027] The sawing machine longitudinal feed guide pair 8 comprises a longitudinal feed slider 81 and a longitudinal feed linear guide 82 which slide against each other. The longitudinal feed slider 81 is arranged at the bottom of the vertical band sawing machine mainframe 4, and the longitudinal feed linear guide 82 is arranged on the adjustment base 3.

[0028] The present invention also discloses a condenser header sawing method, which uses the condenser header sawing unit as described above to saw the excess of the side pipe ends of the condenser header, including the following steps:

[0029] The first step: place the condenser header A to be processed on the support fixture 13 on the fixed lifting mechanism 9 and the mobile lifting mechanism 10 of the header seat 2, with the side with the row pipes close to the vertical band saw machine main unit 4; drive the vertical clamping mechanism 12 to press the condenser header A on the support fixture 13; adjust the height of the condenser header A relative to the vertical band saw machine main unit 4 by the fixed lifting mechanism 9 and the mobile lifting mechanism 10 respectively.

[0030] The second step: start the sawing machine longitudinal feed drive device 7, adjust the vertical band sawing machine main unit 4 on the base 3, and drive the sawing machine longitudinal feed drive device 7 to move longitudinally along the sawing machine longitudinal feed guide rail pair 8 to the position where the condenser header A is located to the sawing position.

[0031] The third step: the vertical band saw machine main unit 4 moves laterally along the base transverse feed guide rail pair 6 driven by the base transverse feed drive device 5, starting from the initial sawing position on the left side of the collection box seat 2 and moving to the right side of the collection box seat 2 to complete the sawing processing of all the rows of pipes on one side of the condenser collection box A.

[0032] Step 4: The vertical band saw machine main unit 4 returns to the initial sawing position, the vertical clamping mechanism 12 is released, and the processed condenser header A is taken out to complete a sawing cycle.

[0033] Specifically, the first step further includes drawing lines on the condenser header A to mark sawing positions.

[0034] 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 header, characterized in that: A condenser header sawing unit is used to saw the end of the row pipe of the condenser header, the condenser header sawing unit comprises a unit seat and a header seat which are separately arranged, an adjustment base is arranged on the unit seat, a vertical band sawing machine main machine is arranged on the adjustment base, a base transverse feed driving device and a base transverse feed guide pair are arranged between the unit seat and the adjustment base, the adjustment base moves along the base transverse feed guide pair under the drive of the base transverse feed driving device, a sawing machine longitudinal feed driving device and a sawing machine longitudinal feed guide pair are arranged between the adjustment base and the vertical band sawing machine main machine, the vertical band The sawing machine mainframe is driven by the sawing machine longitudinal feed driving device to move longitudinally along the sawing machine longitudinal feed guide rail pair to the position of the collection box seat; a fixed lifting mechanism is arranged at the left end of the collection box seat in the length direction, a box seat guide rail is arranged on the top surface of the collection box seat, a movable lifting mechanism is arranged on the box seat guide rail, the movable lifting mechanism slides on the box seat guide rail, and vertical clamping mechanisms and supporting fixtures are arranged on the fixed lifting mechanism and the movable lifting mechanism, and the two ends of the condenser collection box to be processed are respectively placed on the supporting fixtures on the fixed lifting mechanism and the movable lifting mechanism, and then respectively clamped by the two vertical clamping mechanisms; The method comprises the following steps: The first step: placing the condenser header to be processed on the support fixtures on the fixed lifting mechanism and the mobile lifting mechanism of the header seat, driving the vertical pressing mechanism to press the condenser header on the support fixture, and adjusting the height of the condenser header relative to the main machine of the vertical band saw through the fixed lifting mechanism and the mobile lifting mechanism; The second step: start the sawing machine longitudinal feed drive device, adjust the vertical band sawing machine main unit on the base and drive it along the sawing machine longitudinal feed guide pair to the position where the condenser header is located to the sawing position; Step 3: The main machine of the vertical band sawing machine moves laterally along the transverse feed guide rail pair of the base under the drive of the transverse feed drive device of the base, and moves from the initial sawing position on the left side of the header seat to the right side of the header seat to complete the sawing process of the row pipes on one side of the condenser header seat; Step 4: The main machine of the vertical band saw returns to the initial position of sawing, releases the vertical clamping mechanism, and takes out the processed condenser header.

2. The method for sawing a condenser header according to claim 1, characterized in that: The first step also includes scribing lines on the condenser header to indicate the sawing locations.

3. The method for sawing a condenser header according to claim 1, characterized in that: The base transverse feed driving device includes a transverse feed motor, a transverse feed gear and a transverse feed rack. The transverse feed motor is arranged on the adjustment base, and the transverse feed rack is arranged on the unit seat. The transverse feed motor drives the transverse feed gear to roll on the transverse feed rack.

4. The method for sawing a condenser header according to claim 1, characterized in that: The base transverse feed guide pair includes a transverse feed slider and a transverse feed linear guide that slide against each other. The transverse feed slider is arranged at the bottom of the adjustment base, and the transverse feed linear guide is arranged on the unit seat.

5. The method for sawing a condenser header according to claim 1, characterized in that: The longitudinal feed drive device of the sawing machine includes a longitudinal feed motor, a feed ball screw and a feed screw seat. The longitudinal feed motor is fixed on the adjustment base, and the feed screw seat is fixed on the bottom of the vertical band sawing machine main unit. The longitudinal feed motor drives the feed ball screw to rotate in the feed screw seat, thereby driving the vertical band sawing machine main unit to move longitudinally along the longitudinal feed guide rail pair of the sawing machine.

6. The method for sawing a condenser header according to claim 1, characterized in that: The sawing machine longitudinal feed guide pair comprises a longitudinal feed slider and a longitudinal feed linear guide which slide against each other. The longitudinal feed slider is arranged at the bottom of the vertical band sawing machine mainframe, and the longitudinal feed linear guide is arranged on the adjustment base.

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