Automatic assembly equipment for copper sleeves in pumps

Abstract

The present invention provides an automatic assembly device for copper sleeves in pumps, comprising: a rotary station, a copper sleeve feeding mechanism, a copper sleeve transporting mechanism, a copper sleeve pre-installation mechanism, a copper sleeve pressing mechanism, a pump body feeding mechanism, a turnover platform, a pump body ejection mechanism, a pump body displacement structure, a copper sleeve positioning platform, a liquid nitrogen tank, and a traveling frame manipulator; the copper sleeve pre-installation mechanism is arranged on the rotary station; the turnover platform transports the pump body to the pump body displacement structure through the pump body feeding mechanism, the pump body displacement structure is arranged on one side of the copper sleeve pre-installation mechanism, and the pump body ejection mechanism is arranged below the pump body displacement structure; the copper sleeve positioning platform is arranged on the other side of the copper sleeve pre-installation mechanism, and transports the copper sleeve to the copper sleeve feeding mechanism through the traveling frame manipulator. The present invention can well ensure the position accuracy of the copper sleeve and the absence of scratches on the outer wall of the copper sleeve, is conducive to the assembly of the copper sleeve, has a high degree of automation and is easy to implement, and has a compact, efficient, stable and reliable overall structure.

Description

Technical Field

[0001] The invention relates to automatic assembly equipment, in particular to automatic assembly equipment for a copper sleeve in a pump. Background Art

[0002] Traditional assembly devices between the pump body and the copper sleeve typically utilize a combination of cylinder clamping and suction cups. This existing assembly method, during assembly, can easily leave scratches on the outer wall of the copper sleeve due to the clamping position being located outside the sleeve. This also requires high clamping force and control precision, making it difficult to implement. Furthermore, due to an unreasonable structural design, the pre-installation of the copper sleeve may conflict with the rotation of the motor. This necessitates a spatial avoidance design, which is then achieved through a combination of belt and chain transmission. Consequently, existing assembly equipment is bulky and complex, and transmission stability may be affected over long periods of processing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is the need to provide an automatic assembly device for the copper sleeve in the pump, which aims to ensure the position accuracy of the copper sleeve and the absence of scratches on the outer wall of the copper sleeve by optimizing the overall structure and its supporting automatic assembly process, which is conducive to the assembly of the copper sleeve and easy to implement; on this basis, it can also well avoid structural interference between the motor and the copper sleeve pre-assembly mechanism, and can directly realize transmission through gears, and the overall structure is more compact, efficient, stable and reliable.

[0004] To this end, the present invention provides an automatic assembly equipment for copper sleeves in pumps, comprising: a rotary station, a copper sleeve feeding mechanism, a copper sleeve conveying mechanism, a copper sleeve pre-installation mechanism, a copper sleeve pressing mechanism, a pump body feeding mechanism, a turnover platform, a pump body ejection mechanism, a pump body displacement structure, a copper sleeve positioning platform, a liquid nitrogen box and a rack manipulator; the copper sleeve pre-installation mechanism is arranged on the rotary station; the turnover platform conveys the pump body to the pump body displacement structure through the pump body feeding mechanism, the pump body displacement structure is arranged on one side of the copper sleeve pre-installation mechanism, and the pump body ejection mechanism is arranged below the pump body displacement structure; the liquid nitrogen box is arranged on one side of the copper sleeve positioning platform through the rack manipulator; the copper sleeve positioning platform is arranged on the other side of the copper sleeve pre-installation mechanism, and conveys the copper sleeve to the copper sleeve feeding mechanism through the rack manipulator; the copper sleeve conveying mechanism is arranged between the copper sleeve feeding mechanism and the copper sleeve pre-installation mechanism;

[0005] The automatic assembly process of the automatic assembly equipment for the copper sleeve in the pump comprises the following steps:

[0006] Step A: The turnover platform is used to store the pump body, and the pump body is moved to the assembly area below the copper sleeve pre-assembly mechanism through the pump body loading mechanism and the pump body displacement structure;

[0007] In step A, the rack manipulator takes the copper sleeve out of the liquid nitrogen box and places it on the copper sleeve positioning table for initial positioning. The rack manipulator then places the copper sleeve on the copper sleeve feeding mechanism to transport the copper sleeve. When the copper sleeve transport mechanism detects the copper sleeve, it places the copper sleeve into the pre-installed hole of the copper sleeve pre-installed mechanism.

[0008] Step B, the copper sleeve pre-assembly mechanism rotates successively to the assembly area following the rotating station;

[0009] Step C: the pump body ejection mechanism ejects the pump body on the pump body displacement structure until the upper surface of the pump body contacts the lower bottom surface of the copper sleeve pre-installation mechanism, and then the copper sleeve pressing mechanism presses the copper sleeve from the copper sleeve pre-installation mechanism into the pump body;

[0010] In step D, the sleeve pressing mechanism and the pump body ejecting mechanism are reset, the pump body with the copper sleeve installed is taken out through the pump body loading mechanism, and the next unassembled pump body is placed into the assembly area.

[0011] A further improvement of the present invention is that the rack manipulator includes a first column, a rack, a right vertical axis, a left vertical axis, a copper sleeve disc clamp, a copper sleeve disc and a copper sleeve clamp, the copper sleeve disc clamp is used to clamp the copper sleeve disc stored in the liquid nitrogen box, the copper sleeve disc clamp is movably set on the rack through the left vertical axis; the copper sleeve clamp is movably set on the rack through the right vertical axis; the rack is set on the first column.

[0012] A further improvement of the present invention is that the copper sleeve clamp includes a frame, a first cylinder, a connecting rod and a hook, the first cylinder is arranged on the four sides of the frame, the first cylinder is connected to one end of the hook through the connecting rod, the end of the hook close to the connecting rod is rotatably connected to the frame, and the end of the hook away from the connecting rod is a hook portion bent inward; when the first cylinder is pushed out, the hook moves toward the center of the frame and hooks up the copper sleeve; when the first cylinder is retracted, the hook opens to the outside of the frame, thereby loosening and lowering the copper sleeve.

[0013] A further improvement of the present invention is that the copper sleeve clamp comprises a clamp frame and a copper sleeve clamping unit, and a plurality of the copper sleeve clamping units are arranged in parallel on two long sides of the clamp frame.

[0014] A further improvement of the present invention is that the copper sleeve clamping unit includes a second cylinder, a mounting bracket, a compression spring, an expansion frame, a spring sheet and a retraction frame, the expansion frame is connected to the second cylinder through the mounting bracket, the compression spring is sleeved in the expansion frame, the spring sheet is annularly arranged on the outer side of the bottom of the expansion frame, and the expansion frame and the spring sheet are arranged in the retraction frame; after the copper sleeve clamping unit is inserted into the inner hole of the copper sleeve, the second cylinder pushes the expansion frame downward, so that the retraction frame compresses the compression spring to move downward, pushing the downward movement of the expansion frame to squeeze the spring sheet outward, and the spring sheet is opened and squeezed in the copper sleeve inner wall to achieve clamping; when the second cylinder is retracted upward, the expansion frame is driven to move upward, so that it is out of the retraction area, the retraction frame is retracted upward, and the compression spring is reset due to elastic force, thereby pulling the retraction frame upward, and the outer edge of the retraction frame compresses the spring sheet inward. After losing the outward supporting force of the spring sheet, the copper sleeve falls off under the action of gravity.

[0015] A further improvement of the present invention is that the rotating station includes a divider and a turntable, and the copper sleeve pre-installing mechanism is installed on the divider through the turntable to follow the divider to rotate at a fixed value; the copper sleeve pre-installing mechanism includes a first servo motor, a mounting seat, a stock workpiece, a gear, a rotating cylinder, a bearing and a block piece, the bearing is installed on the mounting seat, the stock workpiece is sleeved on the bearing, the outer edge of the stock workpiece is meshed with the gear, and the gear is connected to the first servo motor; the block piece is arranged at the bottom of the stock workpiece through the rotating cylinder and is rotatably arranged below the pre-installed hole on the stock workpiece; when the copper sleeve is pre-installed, the block piece is arranged in a blocking manner on the lower bottom surface of the pre-installed hole; when the copper sleeve is installed into the pump body, the block piece is driven by the rotating cylinder to rotate outward from the lower bottom surface of the pre-installed hole, so that the copper sleeve in the pre-installed hole falls into the pump body.

[0016] A further improvement of the present invention is that the copper sleeve feeding mechanism includes a power motor, a speed regulator, a limit block and a conveyor belt, the power motor is connected to the speed regulator, the limit block is arranged at the end of the conveyor belt, the copper sleeve is transported by the power motor and the conveyor belt, and stops moving when it is transported to the limit block; the copper sleeve handling mechanism includes a second column, a sensor, a pushing cylinder, a lifting cylinder, a first linear guide rail and an air claw, the sensor is arranged on the second column and is used to sense the copper sleeve of the copper sleeve feeding mechanism, after sensing, first, the lifting cylinder descends and clamps the copper sleeve through the air claw, then, the lifting cylinder rises, the pushing cylinder pushes the lifting cylinder forward along the first linear guide rail until the air claw is in the copper sleeve pre-installation area, the lifting cylinder descends, and the copper sleeve is sent into the pre-installation hole of the copper sleeve pre-installation mechanism, the air claw opens, and finally, the lifting cylinder rises and the pushing cylinder retracts.

[0017] A further improvement of the present invention is that the copper sleeve pressing mechanism includes a pressing module, a mounting support, a second servo motor, a pushing plate and a pushing rod, the second servo motor is installed on the pressing module through the mounting support, the second servo motor is connected to the pushing plate, the pushing rod is installed on the pushing plate, the second servo motor drives the pushing rod to rotate so that the position of the pushing rod is consistent with the pre-installed hole in the copper sleeve pre-installed mechanism, the pressing module moves downward so that the pushing rod is inserted into the pre-installed hole of the copper sleeve pre-installed mechanism to realize the pressing of the copper sleeve; the pump body loading mechanism includes a manipulator base, a manipulator and a pump body clamp, the pump body clamp is installed on the manipulator base through the manipulator, and two chucks are provided on the pump body clamp.

[0018] A further improvement of the present invention is that the turnover platform includes a limit frame, a limit cylinder, a trolley and a pulley set, the limit frame is equipped with a limit cylinder, and pulley sets are installed on both sides of the trolley. When the trolley equipped with the pump body is pushed into the limit frame, the limit cylinder is clamped inward to limit the movement of the trolley; when the trolley needs to be pushed out, the limit cylinder is controlled to retract; the pump body ejection mechanism includes a third servo motor, a motor mounting plate, a coupling, a guide rod, a linear bearing, a movable plate, a ball screw, a mounting plate and a pump pushing plate, the mounting plate Installed on the frame, the third servo motor is installed on the motor mounting plate, and the output shaft of the third servo motor is connected to the ball screw through a coupling for power output; the movable plate is installed on the ball screw, and four linear bearings are installed on the four holes of the movable plate. Four guide rods pass through the linear bearings and are connected to the mounting plate. A top pump plate is also installed on the movable plate. When the third servo motor rotates, the ball screw is driven to rotate through the coupling, so that the movable plate moves up and down, and the pump body is driven up and down by the top pump plate.

[0019] A further improvement of the present invention is that the pump body displacement structure includes a second linear guide rail, a load-bearing plate, a positioning guide rod and a third cylinder, the second linear guide rail and the third cylinder are installed on the frame panel, the third cylinder is connected to the load-bearing plate, and the load-bearing plate is installed on the second linear guide rail, and the reciprocating motion of the load-bearing plate is realized by the telescopic action of the third cylinder; a positioning guide rod is installed on the load-bearing plate, and when the presence of the pump body is detected on the load-bearing plate, the third cylinder retracts, and the load-bearing plate moves together with the pump body to the assembly area, in the assembly area, the pump body is lifted up and separated from the load-bearing plate for assembly with the copper sleeve; after the assembly is completed, the pump body returns to the load-bearing plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are: it includes a rotating station, a copper sleeve feeding mechanism, a copper sleeve transport mechanism, a copper sleeve pre-installation mechanism, a copper sleeve pressing mechanism, a pump body loading mechanism, a turnover platform, a pump body ejection mechanism, a pump body displacement structure, a copper sleeve positioning table, a liquid nitrogen box and a traveling frame manipulator, so as to realize automatic assembly between the pump body and the copper sleeve, and also provides a matching automatic assembly process, which can well ensure the position accuracy of the copper sleeve and the absence of scratches on the outer wall of the copper sleeve, which is conducive to the assembly of the copper sleeve, has a high degree of automation and is easy to implement; on this basis, it can also well avoid structural interference between the motor and the copper sleeve pre-installation mechanism, and can directly realize transmission through gears, making the overall structure of the equipment more compact, efficient, stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of an embodiment of the present invention at another angle;

[0023] Figure 3 This is a schematic structural diagram of a rotating station according to an embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of a copper sleeve feeding mechanism according to an embodiment of the present invention;

[0025] Figure 5 This is a structural diagram of a copper sleeve transport mechanism according to an embodiment of the present invention;

[0026] Figure 6-1 This is a schematic structural diagram of a copper sleeve pre-assembly mechanism according to an embodiment of the present invention;

[0027] Figure 6-2 1 is a schematic cross-sectional view of a copper sleeve pre-assembly mechanism according to an embodiment of the present invention;

[0028] Figure 6-3 This is a schematic structural diagram of a copper sleeve pre-installation mechanism according to an embodiment of the present invention from another angle;

[0029] Figure 6-4 This is a schematic diagram of the assembly structure of the copper sleeve pre-assembly mechanism after the blocking piece rotates according to an embodiment of the present invention;

[0030] Figure 7 This is a structural diagram of a copper sleeve pressing mechanism according to an embodiment of the present invention;

[0031] Figure 8 This is a structural diagram of a pump loading mechanism according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic structural diagram of a turnover platform according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic structural diagram of a pump ejection mechanism according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic structural diagram of a pump body displacement structure according to an embodiment of the present invention;

[0035] Figure 12 This is a schematic structural diagram of a copper sleeve positioning platform according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic structural diagram of a liquid nitrogen tank according to an embodiment of the present invention;

[0037] Figure 14 This is a schematic structural diagram of a rack manipulator according to an embodiment of the present invention;

[0038] Figure 15 This is a schematic structural diagram of a copper sleeve clamp according to an embodiment of the present invention;

[0039] Figure 16 yes Figure 15 A magnified schematic diagram of the local structure in FIG;

[0040] Figure 17 This is a schematic structural diagram of a copper sleeve fixture according to an embodiment of the present invention;

[0041] Figure 18 This is a structural diagram of a copper sleeve clamping unit according to an embodiment of the present invention;

[0042] Figure 19 It is a partial cross-sectional structural schematic diagram of a copper sleeve clamping unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In the description of the present invention, if any directional description is involved, such as "upper", "lower", "front", "back", "left", "right", etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations on the present invention. If a technical feature is referred to as being "disposed", "fixed", "connected", or "installed" on another technical feature, it can be directly disposed, fixed, or connected to the other technical feature, or it can be indirectly disposed, fixed, connected, or installed on the other technical feature.

[0044] In the description of the present invention, if "several" is used, it means more than one; if "plurality" is used, it means more than two; if "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if "above," "below," or "within" is used, it should be understood as including the number itself. If "first," "second," etc. is used, it should be understood that it is used only to distinguish the names of identical or similar technical features, and should not be understood to imply or indicate the relative importance of the technical features, the number of technical features, or the order of the technical features.

[0045] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0046] like Figures 1 to 14 As shown, this embodiment provides an automatic assembly equipment for copper sleeves in pumps, comprising: a rotating station 1, a copper sleeve feeding mechanism 2, a copper sleeve transporting mechanism 3, a copper sleeve pre-installing mechanism 4, a copper sleeve pressing mechanism 5, a pump body feeding mechanism 6, a turnover platform 7, a pump body ejecting mechanism 8, a pump body displacement structure 9, a copper sleeve positioning platform 10, a liquid nitrogen tank 11 and a rack manipulator 12; the copper sleeve pre-installing mechanism 4 is arranged on the rotating station 1; the turnover platform 7 transports the pump body 704 to the pump body displacement structure 9 through the pump body feeding mechanism 6 , the pump body displacement structure 9 is arranged on one side of the copper sleeve pre-installation mechanism 4, and the pump body ejection mechanism 8 is arranged below the pump body displacement structure 9; the liquid nitrogen tank 11 is arranged on one side of the copper sleeve positioning platform 10 through the rack manipulator 12; the copper sleeve positioning platform 10 is arranged on the other side of the copper sleeve pre-installation mechanism 4, and the copper sleeve 204 is transported to the copper sleeve feeding mechanism 2 through the rack manipulator 12; the copper sleeve transporting mechanism 3 is arranged between the copper sleeve feeding mechanism 2 and the copper sleeve pre-installation mechanism 4;

[0047] The automatic assembly process of the automatic assembly equipment for the copper sleeve in the pump comprises the following steps:

[0048] In step A1, the turnover platform 7 is used to store the pump body 704 and transfer the pump body 704 to the assembly area below the copper sleeve pre-assembly mechanism 4 via the pump body loading mechanism 6 and the pump body displacement mechanism 9. The assembly area refers to the area for assembling the pump body 704 and the copper sleeve 204, specifically the area where the copper sleeve pre-assembly mechanism 4, the pump body ejection mechanism 8, and the pump body displacement mechanism overlap in the vertical direction.

[0049] In step A2, the rack manipulator 12 takes the copper sleeve 204 out of the liquid nitrogen tank 11 and places it on the copper sleeve positioning platform 10 for initial positioning. The rack manipulator 12 then places the copper sleeve 204 on the copper sleeve feeding mechanism 2 to transport the copper sleeve 204. After the copper sleeve transport mechanism 3 detects the copper sleeve 204, it places the copper sleeve 204 into the pre-installation hole 404 of the copper sleeve pre-installation mechanism 4. The detection process of the copper sleeve 204 can be achieved by existing sensors.

[0050] Step B, the copper sleeve pre-installation mechanism 4 rotates successively to the assembly area following the rotating station 1;

[0051] Step C: The pump body ejection mechanism 8 ejects the pump body 704 on the pump body displacement structure 9 until the upper surface of the pump body 704 contacts the lower bottom surface of the copper sleeve pre-installation mechanism 4, and then the copper sleeve 204 is pressed from the copper sleeve pre-installation mechanism 4 into the pump body 704 through the copper sleeve pressing mechanism 5;

[0052] In step D, the sleeve pressing mechanism 5 and the pump body ejecting mechanism 8 are reset, and the pump body 704 with the copper sleeve 204 installed is taken out through the pump body feeding mechanism 6, that is, the cost of the copper sleeve 204 is taken out, and the next unassembled pump body 704 is placed in the assembly area for the next assembly.

[0053] It should be noted that step A1 and step A2 described in this embodiment can be performed simultaneously. After the copper sleeve 204 is placed into the pre-installation hole 404 of the copper sleeve pre-installation mechanism 4, step B is then performed. Such a design not only makes the collaborative work between the various modules smoother, but also effectively improves the assembly efficiency of the product through parallel processes.

[0054] This embodiment includes a rotating station 1, a copper sleeve feeding mechanism 2, a copper sleeve transporting mechanism 3, a copper sleeve pre-installing mechanism 4, a copper sleeve pressing mechanism 5, a pump body feeding mechanism 6, a turnover platform 7, a pump body ejecting mechanism 8, a pump body displacement structure 9, a copper sleeve positioning platform 10, a liquid nitrogen tank 11 and a rack manipulator 12, so as to realize automatic assembly between the pump body 704 and the copper sleeve 204, and also provides a matching automatic assembly process, which can well ensure the position accuracy of the copper sleeve 204 and the absence of scratches on the outer wall of the copper sleeve 204, which is conducive to the assembly of the copper sleeve 204. The entire assembly process can be efficiently completed by taking out the copper sleeve 204 from the liquid nitrogen tank 11, clamping and arranging the copper sleeve, feeding the copper sleeve, pre-installing the copper sleeve, feeding the pump body, pressing the copper sleeve and unloading the finished product, with a high degree of automation and easy implementation. On this basis, the structural interference between the motor and the copper sleeve pre-installing mechanism 4 can be well avoided, and the transmission can be directly realized through gears, making the overall structure of the equipment more compact, efficient, stable and reliable.

[0055] like Figures 14 to 19 As shown, the rack manipulator 12 of this embodiment includes a first column 121, a rack 122, a right vertical shaft 123, a left vertical shaft 124, a copper sleeve disc fixture 125, a copper sleeve disc 126 and a copper sleeve fixture 127. The left vertical shaft 124 and the right vertical shaft 123 are installed on the rack 122 and can move left and right, and the left vertical shaft 124 and the right vertical shaft 123 can move up and down; the copper sleeve disc fixture 125 is used to clamp the liquid nitrogen box 11. The copper sleeve disc 126 is positioned on the copper sleeve positioning platform 10; the copper sleeve disc fixture 125 is movably mounted on the rack 122 via the left vertical axis 124; the copper sleeve fixture 127 is movably mounted on the rack 122 via the right vertical axis 123; the copper sleeve fixture 127 removes the copper sleeve 204 and places it on the copper sleeve conveying mechanism 2; the rack 122 is mounted on the first column 121. In other words, in this embodiment, the copper sleeve disc 126 and the copper sleeve 204 are respectively gripped and transported by the same rack manipulator 12, so that the processes of removing the copper sleeve 204, gripping and arranging the copper sleeves, and loading the copper sleeves can be performed quickly and reliably in sequence, thereby achieving efficient loading of the copper sleeves 204.

[0056] like Figure 15 and Figure 16As shown, the copper sleeve clamp 125 in this embodiment includes a frame 1251, a first cylinder 1252, a connecting rod 1253 and a hook 1254. The first cylinder 1252 is arranged on the four sides of the frame 1251. The first cylinder 1252 is connected to one end of the hook 1254 through the connecting rod 1253. The end of the hook 1254 close to the connecting rod 1253 is rotatably connected to the frame 1251, and the end of the hook 1254 away from the connecting rod 1253 is a hook portion bent inward; when the first cylinder 1252 is pushed out, the hook 1254 moves toward the center of the frame 1251 and thus hooks up the copper sleeve 126; when the first cylinder 1252 is retracted, the hook 1254 opens to the outside of the frame 1251, thereby loosening and putting down the copper sleeve 126. It should be noted that, in this embodiment, the rotational connection between the hook 1254 and the frame 1251 is located at an end close to the connecting rod 1253, that is, the end of the hook 1254 close to the copper sleeve 126 is longer than the end close to the connecting rod 1253, thereby being able to make good use of the lever principle to hang the copper sleeve 126 with less force, and achieve energy-saving and labor-saving design through a reasonable and efficient structure. The hook 1254 is also preferably a bent integrated hook, and the hook 1254 is bent inward at the rotational connection between the hook 1254 and the frame 1251. The inward bending angle is preferably between 155° and 165°. It will not affect its load-bearing capacity and labor-saving effect due to the angle being too small, and it can also make the vertical distance between the frame 1251 and the copper sleeve 126 smaller to a certain extent, which is conducive to the miniaturization design of the product.

[0057] like Figure 17 As shown, the copper sleeve fixture 127 of this embodiment includes a fixture frame 1271 and a copper sleeve clamping unit 1272. A plurality of the copper sleeve clamping units 1272 are arranged in parallel on the two long sides of the fixture frame 1271, which facilitates the removal and placement of multiple copper sleeves 204 at one time and improves work efficiency.

[0058] More specifically, Figure 18 and Figure 19As shown, the copper sleeve clamping unit 1272 of this embodiment includes a second cylinder 12721, a mounting bracket 12722, a compression spring 12723, an expansion frame 12724, a spring piece 12725 and a contraction frame 12726. The expansion frame 12724 is connected to the second cylinder 12721 through the mounting bracket 12722. The compression spring 12723 is sleeved in the expansion frame 12724. The spring piece 12725 is annularly arranged on the bottom outer side of the expansion frame 12724. The expansion frame 12724 and the spring piece 12725 are arranged in the contraction frame 12726. After the copper sleeve clamping unit 1272 is inserted into the inner hole of the copper sleeve, the second cylinder 12721 pushes the expansion frame 12724 to move downward, thereby causing the The contraction frame 12726 compresses the compression spring 12723 to move downward, pushing the downward movement of the expansion frame 12724 to squeeze the spring 12725 outward, and the spring 12725 opens in the copper sleeve 204 and squeezes the inner wall of the copper sleeve 204 to achieve clamping; when the second cylinder 12721 is retracted upward to drive the expansion frame 12724 to move upward, so that it is out of the area of ​​the spring 12725, the spring 12725 retracts upward, and the compression spring 12723 is reset due to elastic force, thereby pulling the contraction frame 12726 upward, and the outer edge of the contraction frame 12726 compresses the spring 12725 inward. After losing the outward supporting force of the spring 12725, the copper sleeve 204 naturally falls off under the action of gravity.

[0059] Therefore, unlike the traditional cylinder clamping and suction cup suction structure, the copper sleeve clamping unit 1272 described in the present application uses a spring piece 12725 to open outward so as to generate friction with the inner wall of the copper sleeve 204 to remove the copper sleeve 204, which can not only ensure the positioning accuracy of the copper sleeve 204, but also ensure that the outer wall of the copper sleeve 204 is free of scratches, which is conducive to the assembly of the copper sleeve 204.

[0060] like Figure 3 As shown, the rotating station 1 in this embodiment includes a divider 101 and a turntable 102. The copper sleeve pre-installation mechanism 4 is installed on the divider 101 through the turntable 102. The divider 101 is preferably intermittently operated by the motor to allow it to rotate at a certain angle, and the copper sleeve pre-installation mechanism 4 is installed on the divider 1101 through the turntable 102. Therefore, the copper sleeve pre-installation mechanism 4 can follow the divider 101 to rotate at a fixed value.

[0061] like Figure 6-1 to Figure 6-4As shown, the copper sleeve pre-installation mechanism 4 of this embodiment includes a first servo motor 401, a mounting base 402, a stock workpiece 403, a gear 405, a rotary cylinder 406, a bearing 407, and a stopper 408. The bearing 407 is mounted on the mounting base 402, and the stock workpiece 403 is sleeved on the bearing 407. The outer edge of the stock workpiece 403 is meshed with the gear 405, and the gear 405 is connected to the first servo motor 401. Therefore, the power of the first servo motor 401 can be transmitted to the stock workpiece 403 through the gear 405. When the copper sleeve 204 is placed into the pre-installation hole 404 of the stock workpiece 403, the first servo motor 401 rotates and drives the stock workpiece 403 to rotate a certain angle through the gear 405, thereby enabling the copper sleeve 204 to be placed into the pre-installation hole 404. The blocking piece 408 is set at the bottom of the stock workpiece 403 through the rotating cylinder 406, and is rotatably set below the pre-installed hole 404 on the stock workpiece 403; when the copper sleeve 204 is pre-installed, the blocking piece 408 is set at the lower bottom surface of the pre-installed hole 404 in a blocking manner. At this time, the blocking piece 408 just blocks the lower bottom surface of the pre-installed hole 404 so that the copper sleeve 204 will not fall out. Figure 6-3 As shown; when the copper sleeve 204 is installed into the pump body 704, the blocking piece 408 is driven by the rotating cylinder 406 to rotate outward from the lower bottom surface of the pre-installed hole 404 (i.e., turn away from the lower bottom surface of the pre-installed hole 404), so that the copper sleeve 204 in the pre-installed hole 404 falls into the pump body 704, as shown Figure 6-4 shown.

[0062] It is worth mentioning that, firstly, this embodiment realizes the copper sleeve pre-installation through the turntable type stock workpiece 403 and the pre-installation hole 404 thereon. One copper sleeve pre-installation mechanism 4 may include four sets such as Figure 6-1 to Figure 6-4 The pre-installed structure, four sets of pre-installed structures are symmetrically arranged in pairs around the top of the rotating station 1, and then the rotating station 1 is driven by rotation to continuously realize efficient pre-installation of the copper sleeve; secondly, the structural design and principle of the copper sleeve pre-installed mechanism, the structure places the pre-installed hole 404 inside the stock workpiece 403 with a gear, and the first servo motor 401 is placed on one side of the gear of the stock workpiece 403. The rotation of the first servo motor 401 can make the pre-installed hole 404 follow the rotation through the transmission of the gear. The advantage of the first servo motor 401 on one side is that it can avoid structural interference during pre-installation of the copper sleeve, making the structure simpler and more efficient; on this basis, the present application is realized by gear transmission and is obviously more stable and reliable than the prior art using belt drive and chain drive, which can better ensure the stability and precision of the structure, and the structure is simpler and easier to implement.

[0063] like Figure 4 As shown, the copper sleeve feeding mechanism 2 of this embodiment includes a power motor 201, a speed regulator 202, a limit block 203 and a conveyor belt 205. The power motor 201 is connected to the speed regulator 202 to realize the rotation speed of the power motor 201, thereby controlling the movement speed of the conveyor belt 205; the limit block 203 is arranged at the end of the conveyor belt 205, and is used as the movement stop position of the copper sleeve 204; the copper sleeve 204 is transported by the power motor 201 and the conveyor belt 205, and stops moving when it is transported to the limit block 203.

[0064] like Figure 5 As shown, the copper sleeve conveying mechanism 3 of this embodiment includes a second column 301, a sensor 302, a pushing cylinder 303, a lifting cylinder 304, a first linear guide 305 and an air claw 306. The sensor 302 is arranged on the second column 301 and is used to sense the copper sleeve 204 of the copper sleeve feeding mechanism 2. After sensing, first, the lifting cylinder 304 descends and clamps the copper sleeve 204 through the air claw 306, and then the lifting cylinder 304 rises, and the pushing cylinder 303 pushes the lifting cylinder 304 forward along the first linear guide rail 305 until the air claw 306 is in the pre-installation area of ​​the copper sleeve 204. The lifting cylinder 304 descends and sends the copper sleeve 204 into the pre-installation hole 404 of the copper sleeve pre-installation mechanism 4. The air claw 306 opens. Finally, the lifting cylinder 304 rises and the pushing cylinder 303 retreats, providing a good foundation for the next copper sleeve transportation.

[0065] like Figure 7 As shown, the copper sleeve pressing mechanism 5 in this embodiment includes a pressing module 501, a mounting support 502, a second servo motor 503, a pushing disk 504 and a pushing rod 505. The second servo motor 503 is installed on the pressing module 501 through the mounting support 502. The second servo motor 503 is connected to the pushing disk 504. The pushing rod 505 is installed on the pushing disk 504. The second servo motor 503 drives the pushing rod 505 to rotate so that the position of the pushing rod 505 is consistent with the position of the pre-installed hole 404 in the copper sleeve pre-installed mechanism 4. The pressing module 501 moves downward so that the pushing rod 505 is inserted into the pre-installed hole 404 of the copper sleeve pre-installed mechanism 4 to realize the press-fitting of the copper sleeve 204; as shown Figure 8 As shown, the pump body feeding mechanism 6 includes a manipulator base 601 , a manipulator 602 and a pump body clamp 603 . The pump body clamp 603 is installed on the manipulator base 601 through the manipulator 602 , and two chucks 604 are provided on the pump body clamp 603 .

[0066] It is worth noting that, in this embodiment, two chucks 604 are arranged in parallel on the pump body clamp 603 for simultaneously realizing the loading and unloading of the pump body 704. The working process is as follows: the finished product (the pump body 704 equipped with the copper sleeve 204) is clamped away by one chuck 604, and after the finished product is clamped away, the pump body clamp 603 is controlled to move to the side (the side of the chuck that clamps the finished product) by a chuck stroke, and then the pump body 704 without the copper sleeve 204 is placed in the position for taking away the finished product by another chuck 604, thereby effectively reducing the number of round trips of the manipulator of the pump body feeding mechanism 6 and effectively improving the loading and unloading speed of the pump body 704. The design of this application is because, due to the limitation of the movement range of the manipulator and the control of the motor, the loading and unloading speed of the pump body 704 cannot keep up with the loading speed of the copper sleeve 204, thereby affecting the overall assembly efficiency. Therefore, this embodiment optimizes the structure and working process of the pump body clamp 603, which can well improve the loading and unloading speed of the pump body 704 without basically increasing the hardware cost, thereby improving the overall assembly efficiency of the equipment.

[0067] In this embodiment, the number and position of the push rods 505 correspond to the number and position of the pre-installation holes 404 of the copper sleeve pre-installation mechanism 4, thereby enabling simultaneous press-installation of multiple copper sleeves 204 at one time. The press module 501 is lifted to allow the push rods 505 to exit the pre-installation holes 404 of the copper sleeve pre-installation mechanism 4, and the rotation station 1 is controlled to cause the copper sleeve pre-installation mechanism 4 to rotate accordingly, so that after the push rods 505 exit, the next workpiece 403 stored in the copper sleeve pre-installation mechanism 4 can be rotated to the pre-installation area as soon as possible.

[0068] like Figure 9 As shown, the turnover platform 7 in this embodiment includes a limit frame 701, a limit cylinder 702, a trolley 703 and a pulley set 705. The limit frame 701 is equipped with a limit cylinder 702, and pulley sets 705 are installed on both sides of the trolley 703. When the trolley 703 equipped with the pump body 704 is pushed into the limit frame 701, the limit cylinder 702 is clamped inward to limit the movement of the trolley 703; when the trolley 703 needs to be pushed out, the limit cylinder 702 is controlled to retract, so that the limit frame 701 can be pushed out. The structural design is simple and efficient.

[0069] like Figure 10As shown, the pump body ejection mechanism 8 of this embodiment includes a third servo motor 801, a motor mounting plate 802, a coupling 803, a guide rod 804, a linear bearing 805, a movable plate 806, a ball screw 807, a mounting plate 808 and a pump push plate 809. The mounting plate 808 is mounted on the frame, and the third servo motor 801 is mounted on the motor mounting plate 802. The output shaft of the third servo motor 801 is connected to the ball screw 807 through the coupling 806 for power output. ; The movable plate 806 is installed on the ball screw 807, and four linear bearings 805 are installed on the four holes of the movable plate 806. Four guide rods 804 pass through the linear bearings 805 and are connected to the mounting plate 808. A top pump plate 809 is also installed on the movable plate 806. When the third servo motor 801 rotates, the ball screw 807 is driven to rotate through the coupling 803, so that the movable plate 806 moves up and down, and the pump body 704 is driven to move up and down through the top pump plate 809.

[0070] like Figure 11 As shown, the pump body displacement structure 9 described in this embodiment includes a second linear guide rail 901, a supporting plate 902, a positioning guide rod 903 and a third cylinder 905. The second linear guide rail 901 and the third cylinder 905 are installed on the frame panel. The third cylinder 905 is connected to the supporting plate 902. The supporting plate 902 is installed on the second linear guide rail 901. The reciprocating motion of the supporting plate 902 is achieved by the telescopic action of the third cylinder 905; a positioning guide rod 903 is installed on the supporting plate 902. When the presence of the pump body 704 on the supporting plate 902 is detected, the third cylinder 905 retracts, and the supporting plate 902 moves together with the pump body 704 to the assembly area. In the assembly area, the pump body 704 is lifted up and separated from the supporting plate 902 for assembly with the copper sleeve 204; after the assembly is completed, the pump body 704 returns to the supporting plate 902.

[0071] like Figure 12 As shown, the copper sleeve positioning platform 10 described in this embodiment includes a copper sleeve frame 1001, a positioning cylinder 1002 and a positioning plate 1004. The copper sleeve disc 126 is movably arranged on the copper sleeve frame 1001, and the positioning cylinder 1002 is arranged on one side of the copper sleeve disc 126 through the positioning plate 1004; the copper sleeve disc 126 equipped with the cooling copper sleeve 206 is placed on the copper sleeve frame 1001, and after the sensor detects the copper sleeve disc 126, it is pushed out by the positioning cylinder 1002 so that the positioning plate 1004 presses the copper sleeve disc 126. When the copper sleeve 204 in the copper sleeve disc 126 is completely removed, the positioning cylinder 1002 retreats with the positioning plate 1004, so that the copper sleeve disc 126 can be removed.

[0072] like Figure 13As shown, the liquid nitrogen tank 11 of this embodiment includes a box body 1101, a fourth cylinder 1102 and a box cover 1103. The box cover 1103 is set on the box body 1101 through the fourth cylinder 1102. When the copper sleeve 126 needs to be taken out from the box body 1101 of the liquid nitrogen tank 11, the fourth cylinder 1102 is actuated to push the box cover 1103 open; after the copper sleeve 126 is taken away, the fourth cylinder 1102 is retracted so that the box cover 1103 covers the box body 1101.

[0073] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. An automatic assembly equipment for copper sleeves in pumps, characterized in that: include: A rotating station (1), a copper sleeve feeding mechanism (2), a copper sleeve transporting mechanism (3), a copper sleeve pre-installing mechanism (4), a copper sleeve pressing mechanism (5), a pump body feeding mechanism (6), a turnover platform (7), a pump body ejecting mechanism (8), a pump body displacement structure (9), a copper sleeve positioning platform (10), a liquid nitrogen box (11) and a truss manipulator (12); the copper sleeve pre-installing mechanism (4) is arranged on the rotating station (1); the turnover platform (7) transports the pump body (704) to the pump body displacement structure (9) through the pump body feeding mechanism (6); the pump body displacement structure ( 9) is arranged on one side of the copper sleeve pre-installation mechanism (4), and the pump body ejection mechanism (8) is arranged below the pump body displacement structure (9); the liquid nitrogen box (11) is arranged on one side of the copper sleeve positioning platform (10) through the truss manipulator (12); the copper sleeve positioning platform (10) is arranged on the other side of the copper sleeve pre-installation mechanism (4), and the copper sleeve (204) is transported to the copper sleeve feeding mechanism (2) through the truss manipulator (12); the copper sleeve transporting mechanism (3) is arranged between the copper sleeve feeding mechanism (2) and the copper sleeve pre-installation mechanism (4); The automatic assembly process of the automatic assembly equipment for the copper sleeve in the pump comprises the following steps: Step A1, the turnover platform (7) is used to store the pump body (704), and the pump body (704) is transferred to the assembly area below the copper sleeve pre-assembly mechanism (4) through the pump body loading mechanism (6) and the pump body displacement structure (9); In step A2, the truss manipulator (12) takes the copper sleeve (204) out of the liquid nitrogen box (11) and places it on the copper sleeve positioning platform (10) for initial positioning, and then places the copper sleeve (204) on the copper sleeve feeding mechanism (2) through the truss manipulator (12) to realize the transportation of the copper sleeve (204); when the copper sleeve conveying mechanism (3) detects the copper sleeve (204), the copper sleeve (204) is placed into the pre-installation hole (404) of the copper sleeve pre-installation mechanism (4); Step B, the copper sleeve pre-assembly mechanism (4) rotates successively to the assembly area following the rotating station (1); In step C, the pump body ejection mechanism (8) ejects the pump body (704) on the pump body displacement structure (9) until the upper surface of the pump body (704) contacts the lower bottom surface of the copper sleeve pre-installation mechanism (4), and then the copper sleeve (204) is pressed from the copper sleeve pre-installation mechanism (4) into the pump body (704) through the copper sleeve pressing mechanism (5); In step D, the sleeve pressing mechanism (5) and the pump body ejecting mechanism (8) are reset, the pump body (704) equipped with the copper sleeve (204) is taken out through the pump body feeding mechanism (6), and the next unassembled pump body (704) is placed in the assembly area.

2. The automatic assembly equipment for the copper sleeve in the pump according to claim 1 is characterized in that: The truss manipulator (12) includes a first column (121), a row frame (122), a right vertical axis (123), a left vertical axis (124), a copper sleeve disc clamp (125), a copper sleeve disc (126) and a copper sleeve clamp (127), wherein the copper sleeve disc clamp (125) is used to clamp the copper sleeve disc (126) stored in the liquid nitrogen box (11), and the copper sleeve disc clamp (125) is movably set on the row frame (122) through the left vertical axis (124); the copper sleeve clamp (127) is movably set on the row frame (122) through the right vertical axis (123); and the row frame (122) is set on the first column (121).

3. The automatic assembly equipment for the copper sleeve in the pump according to claim 2, characterized in that: The copper sleeve disc fixture (125) comprises a frame (1251), a first cylinder (1252), a connecting rod (1253) and a hook (1254), wherein the first cylinder (1252) is arranged on four sides of the frame (1251), the first cylinder (1252) is connected to one end of the hook (1254) via the connecting rod (1253), and the end of the hook (1254) close to the connecting rod (1253) is connected to the frame (1251). The hook (1254) is connected in rotation, and the end away from the connecting rod (1253) is a hook portion bent inward; when the first cylinder (1252) is pushed out, the hook (1254) moves toward the center of the frame (1251) and hooks up the copper sleeve (126); when the first cylinder (1252) is retracted, the hook (1254) opens toward the outside of the frame (1251), and releases and lowers the copper sleeve (126).

4. The automatic assembly equipment for the copper sleeve in the pump according to claim 2, characterized in that: The copper sleeve clamp (127) comprises a clamp frame (1271) and a copper sleeve clamping unit (1272), and a plurality of the copper sleeve clamping units (1272) are arranged in parallel on two long sides of the clamp frame (1271).

5. The automatic assembly equipment for the copper sleeve in the pump according to claim 4, characterized in that: The copper sleeve clamping unit (1272) comprises a second cylinder (12721), a mounting bracket (12722), a compression spring (12723), an expansion frame (12724), a spring piece (12725) and a contraction frame (12726); the expansion frame (12724) is connected to the second cylinder (12721) via the mounting bracket (12722); the compression spring (12723) is sleeved in the expansion frame (12724); the spring piece (12725) is annularly arranged on the outside of the bottom of the expansion frame (12724); the expansion frame (12724) and the spring piece (12725) are arranged in the contraction frame (12726); after the copper sleeve clamping unit (1272) is inserted into the inner hole of the copper sleeve, the second cylinder (12721) pushes the expansion frame (12724) to move downward, thereby The contraction frame (12726) compresses the compression spring (12723) to move downward, pushing the downward movement of the expansion frame (12724) to squeeze the spring (12725) outward, and the spring (12725) opens in the copper sleeve (204) and squeezes the inner wall of the copper sleeve (204) to achieve clamping; when the second cylinder (12721) is retracted upward, the expansion frame (12724) moves upward, so that it is separated from the spring (12725) area, the spring (12725) retracts upward, and the compression spring (12723) is reset due to elastic force, thereby pulling the contraction frame (12726) upward, and the outer edge of the contraction frame (12726) compresses the spring (12725) inward. After the outward supporting force of the spring (12725) is lost, the copper sleeve (204) falls off under the action of gravity.

6. The automatic assembly equipment for the copper sleeve in the pump according to any one of claims 1 to 5, characterized in that: The rotating station (1) includes a divider (101) and a turntable (102), and the copper sleeve pre-installation mechanism (4) is installed on the divider (101) through the turntable (102) to follow the divider (101) to rotate at a fixed value; the copper sleeve pre-installation mechanism (4) includes a first servo motor (401), a mounting seat (402), a stock workpiece (403), a gear (405), a rotary cylinder (406), a bearing (407) and a blocking piece (408), wherein the bearing (407) is installed on the mounting seat (402), the stock workpiece (403) is sleeved on the bearing (407), the outer edge of the stock workpiece (403) is meshed with the gear (405), and the The gear (405) is connected to the first servo motor (401); the blocking piece (408) is arranged at the bottom of the stock workpiece (403) through the rotating cylinder (406), and is rotatably arranged below the pre-installed hole (404) on the stock workpiece (403); when the copper sleeve (204) is pre-installed, the blocking piece (408) is arranged in a blocking manner on the lower bottom surface of the pre-installed hole (404); when the copper sleeve (204) is installed in the pump body (704), the blocking piece (408) is driven by the rotating cylinder (406) to rotate outward from the lower bottom surface of the pre-installed hole (404), so that the copper sleeve (204) in the pre-installed hole (404) falls into the pump body (704).

7. The automatic assembly equipment for the copper sleeve in the pump according to any one of claims 1 to 5, characterized in that: The copper sleeve feeding mechanism (2) includes a power motor (201), a speed regulator (202), a stop block (203) and a conveyor belt (205), wherein the power motor (201) is connected to the speed regulator (202), the stop block (203) is arranged at the end of the conveyor belt (205), and the copper sleeve (204) is transported by the power motor (201) and the conveyor belt (205), and stops moving when it is transported to the stop block (203); the copper sleeve transport mechanism (3) includes a second column (301), a sensor (302), a push cylinder (303), a lifting cylinder (304), a first linear guide rail (305) and an air claw (306), wherein the sensor (302) is arranged at the second The column (301) is used to sense the copper sleeve (204) of the copper sleeve feeding mechanism (2). After sensing, first, the lifting cylinder (304) descends and clamps the copper sleeve (204) through the air claw (306). Then, the lifting cylinder (304) rises, and the pushing cylinder (303) pushes the lifting cylinder (304) forward along the first linear guide rail (305) until the air claw (306) is in the copper sleeve pre-installation area. The lifting cylinder (304) descends and feeds the copper sleeve (204) into the pre-installation hole (404) of the copper sleeve pre-installation mechanism (4). The air claw (306) opens. Finally, the lifting cylinder (304) rises, and the pushing cylinder (303) retracts.

8. The automatic assembly equipment for the copper sleeve in a pump according to any one of claims 1 to 5, characterized in that: The copper sleeve pressing mechanism (5) comprises a pressing module (501), a mounting support (502), a second servo motor (503), a pushing plate (504) and a pushing rod (505), wherein the second servo motor (503) is mounted on the pressing module (501) via the mounting support (502), the second servo motor (503) is connected to the pushing plate (504), the pushing rod (505) is mounted on the pushing plate (504), and the second servo motor (503) drives the pushing rod (505) to rotate so that the pushing rod (505) ) is consistent with the pre-installed hole (404) in the copper sleeve pre-installed mechanism (4), and the pressing module (501) moves downward so that the push rod (505) is inserted into the pre-installed hole (404) of the copper sleeve pre-installed mechanism (4) to realize the press-fitting of the copper sleeve (204); the pump body feeding mechanism (6) includes a manipulator base (601), a manipulator (602) and a pump body clamp (603), the pump body clamp (603) is installed on the manipulator base (601) through the manipulator (602), and two clamps are provided on the pump body clamp (603).

9. The automatic assembly equipment for the copper sleeve in a pump according to any one of claims 1 to 5, characterized in that: The turnover platform (7) includes a limit frame (701), a limit cylinder (702), a trolley (703) and a pulley block (705). The limit cylinder (702) is mounted on the limit frame (701), and pulley blocks (705) are mounted on both sides of the trolley (703). When the trolley (703) equipped with the pump body (704) is pushed into the limit frame (701), the limit cylinder (702) is clamped inwards to Limiting the movement of the cart (703); when the cart (703) needs to be pushed out, controlling the limit cylinder (702) to retract; the pump body ejection mechanism (8) includes a third servo motor (801), a motor mounting plate (802), a coupling (803), a guide rod (804), a linear bearing (805), a movable plate (806), a ball screw (807), a mounting plate (808) and a pump push plate (809), The mounting plate (808) is mounted on the frame, the third servo motor (801) is mounted on the motor mounting plate (802), and the output shaft of the third servo motor (801) is connected to the ball screw (807) through a coupling (803) for power output; the movable plate (806) is mounted on the ball screw (807), four linear bearings (805) are mounted on the four holes of the movable plate (806), four guide rods (804) pass through the linear bearings (805) and are connected to the mounting plate (808), and a top pump plate (809) is also mounted on the movable plate (806). When the third servo motor (801) rotates, the ball screw (807) is driven to rotate through the coupling (803), thereby causing the movable plate (806) to move up and down, and the pump body (704) is driven to move up and down through the top pump plate (809).

10. The automatic assembly equipment for the copper sleeve in a pump according to any one of claims 1 to 5, characterized in that: The pump body displacement structure (9) comprises a second linear guide rail (901), a bearing plate (902), a positioning guide rod (903) and a third cylinder (905). The second linear guide rail (901) and the third cylinder (905) are mounted on a frame panel. The third cylinder (905) is connected to the bearing plate (902). The bearing plate (902) is mounted on the second linear guide rail (901). The bearing plate (902) is moved forward and backward by the telescopic action of the third cylinder (905). The supporting plate (902) is provided with a positioning guide rod (903). When the presence of the pump body (704) on the supporting plate (902) is detected, the third cylinder (905) retracts, and the supporting plate (902) and the pump body (704) move to the assembly area. In the assembly area, the pump body (704) is lifted up and separated from the supporting plate (902) to be assembled with the copper sleeve (204). After the assembly is completed, the pump body (704) returns to the supporting plate (902).

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