A multi-station crankshaft pump bearing press-fitting device

Abstract

This application relates to the field of crankshaft pump processing, specifically a multi-station crankshaft pump bearing press-fitting device. The frame includes a base plate and a top plate, connected by a support plate. A servo motor is located on the top of the base plate, and a bearing placement plate is located at the output end of the servo motor. Several sets of placement seats are arranged in a circular array on the bearing placement plate. Bearing pipes and press-fitting cylinders are respectively installed on the top plate, with the bearing pipes and press-fitting cylinders located at opposite ends of the bearing placement plate. Each placement seat has a movable base at its bottom, with the top of the placement seat corresponding to the bearing pipe and press-fitting cylinder. The placement seats are connected by a guide ring. The depth of the placement seat is less than the thickness of the bearing, and the top surface of the bearing within the placement seat is located between the bottom surface of the bearing pipe and the bottom surface of the guide ring. A storage tube for the bearing pipe is fitted onto the top plate, with its bottom located within the guide ring. This application effectively solves the problems of easy damage to the base and decreased turntable support accuracy in traditional press-fitting devices, significantly improving the stability and production efficiency of bearing press-fitting.

Description

Technical Field

[0001] This application relates to the field of crankshaft pump processing, and in particular to a multi-station crankshaft pump bearing press-fitting device. Background Technology

[0002] Automated production lines can operate automatically according to fixed procedures or instructions with the intervention of a few people or even no one. In mass production, the use of automated lines can significantly improve labor productivity, stabilize and improve product quality, improve working conditions, and shorten production cycles, resulting in significant economic benefits. However, in the automated assembly line for piston pump cylinders, bearings need to be press-fitted. Traditional bearing press-fitting devices involve inserting the shaft to be installed into the clamping hole of the mounting base, activating the cylinder, causing the pressure head to contact the bearing and continue pushing it downwards along the shaft, completing one bearing press-fitting process. During the press-fitting process, the base of the traditional bearing press-fitting device bears the pressure of the cylinder. Since there are no supports on both sides of the base's bottom, it is easily damaged.

[0003] Chinese patent CN113953806A discloses a bearing press-fitting device for assembling a plunger pump cylinder body, relating to the field of bearing press-fitting auxiliary technology. The device includes a base, a support structure, and a positioning structure. A base plate is mounted on the top of the base, and a first servo motor is mounted at the middle of the bottom end of the base plate. A rotating rod is mounted on the output end of the first servo motor, and a turntable is mounted on the top of the rotating rod. Placement grooves are installed on both sides and the front and rear ends of the top of the turntable, and positioning grooves are formed inside both sides of the turntable. Press-fitting blocks are mounted on both sides of the top of the base plate, and the positioning structure is located inside the press-fitting blocks. Cylinders are mounted on the top of each press-fitting block, and pressure rods are mounted on the bottom ends of each cylinder. This invention uses a threaded block to drive a connecting rod, which in turn pushes a push rod, causing the push rod to push a push plate, making the push plate contact the bottom end of the turntable and providing support. This structure provides support for the device and prevents damage during the press-fitting process.

[0004] In the existing technology, the turntable is supported by side locking and bottom support to avoid damage to the device during the pressing process. However, the turntable is still used as the base for pressing. After long-term use, the accuracy of the side locking and bottom support structure decreases, the turntable cannot be stably supported, and it is prone to displacement and damage during the pressing process. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, this application provides a multi-station crankshaft pump bearing press-fitting device.

[0006] The multi-station crankshaft pump bearing press-fitting device provided in this application adopts the following technical solution:

[0007] A multi-station crankshaft pump bearing press-fitting device includes a frame, which comprises a base plate and a top plate connected by a support plate. A servo motor is mounted at the center of the top of the base plate, and a bearing placement plate is mounted on the output end of the servo motor. Several sets of placement seats are arranged in a circular array on the bearing placement plate. A bearing pipe for feeding bearings and a press-fitting cylinder for pressing the bearings in the placement seats onto the base plate are respectively mounted on the top plate. The bearing pipe and the press-fitting cylinder are located at opposite ends of the bearing placement plate. A placement seat has a movable base mounted at its bottom, and the top of the placement seat corresponds to the bearing pipe and the press-fitting cylinder. The placement seats are connected by an annular guide ring, and the depth of the placement seat is less than the thickness of the bearing. The top surface of the bearing in the placement seat is located between the bottom surface of the bearing pipe and the bottom surface of the guide ring. The bearing pipe includes a storage tube, which is fitted onto the top plate, and the bottom of the storage tube is located inside the guide ring.

[0008] By adopting the above technical solution, a servo motor drives the bearing placement disk to rotate, and the placement seats in the circular array on the disk rotate accordingly to the corresponding workstations. Bearings fall from the storage tube of the bearing pipeline, pass through the guide ring, and enter the placement seat. The depth of the placement seat is less than the thickness of the bearing, and the top surface of the bearing is located between the bottom surface of the bearing pipeline and the bottom surface of the guide ring. Bearings in the storage tube can fall into the placement seat sequentially and rotate away. The next bearing moves along the guide ring until it enters the next placement seat. When the placement seat rotates to below the pressing cylinder, the pressing cylinder actuates, using the magnetic attraction at the end of the pressing cylinder's output shaft to attract the bearing and precisely press it into the crankshaft pump on the base plate along the placement seat. The placement seats are connected by the guide ring, realizing continuous feeding and pressing of bearings. The base plate and the top plate are connected by a support plate to form a frame, providing stable support for the entire device.

[0009] Preferably, the movable base at the bottom of the placement seat adopts a double-door structure, and the movable base is connected to the bearing placement plate through a torsion spring, wherein the torsion spring structure can support the weight of a set of bearing seats inside the placement seat.

[0010] By adopting the above technical solution, the double-door movable base at the bottom of the placement seat is connected to the bearing placement plate by a torsion spring. The torsion spring bears the weight of a set of bearings inside the placement seat, ensuring that the placement seat remains stable when not being press-fitted. During the press-fitting process, the bearings and the placement seat are subjected to the pressure of the press-fitting cylinder. The double-door structure of the movable base can open under the pressure, causing the placement seat to sink and ensuring that the bearings are successfully press-fitted into the crankshaft pump. After the press-fitting is completed, the movable base is reset under the action of the torsion spring, and the placement seat returns to its initial position, waiting for the next bearing feeding and press-fitting.

[0011] Preferably, a limiting plate is fixed on the outer wall of the storage tube, the limiting plate is located above the point where the storage tube penetrates the top plate, and a handle is rotatably installed on the top of the storage tube.

[0012] Preferably, the outer diameter of the storage tube is adapted to the inner wall of the guide ring, the inner diameter of the storage tube is adapted to the inner diameter of the placement seat, and a transition pipe opening is provided at the top of the placement seat. The top inner diameter of the transition pipe opening is adapted to the width of the guide ring, and the bottom inner diameter of the transition pipe opening is adapted to the inner diameter of the bearing placement seat.

[0013] Preferably, the bottom of the storage tube is detachably equipped with a mating mechanism that slides with the bearing placement tray, including a U-shaped frame with its opening facing the center of the bearing placement tray. The top of the frame is threadedly engaged with the outer wall of the storage tube via a threaded sleeve. The inner side of the frame is fitted with a groove on the outer side of the bearing placement tray via a protrusion. The bottom of the frame is in contact with the bearing placement tray.

[0014] Preferably, the bottom free end of the frame is also equipped with a support groove for supporting the movable base, and the two ends of the support groove are provided with arc transitions.

[0015] Preferably, a bearing limiting clip is also movably inserted through the bottom of the storage tube, which is used to support the bearing inside the storage tube.

[0016] By adopting the above technical solution, the servo motor drives the bearing placement disk to rotate, and the placement seats rotate sequentially to the corresponding workstations. The operator can rotate the storage tube containing several bearings by lifting it. Its outer diameter matches the inner wall of the guide ring, and its inner diameter matches the inner diameter of the placement seat, ensuring accurate bearing transmission path. The bottom mating mechanism is connected to the storage tube through a threaded sleeve, and the limiting plate at the top of the storage tube prevents it from moving excessively downward. The protrusion on the inner side of the U-shaped frame of the mating mechanism matches the slide groove of the bearing placement disk for positioning. The bottom of the frame fits against the bearing placement disk, and the support groove supports the movable base. The arc transition facilitates the smooth entry and exit of the movable base in the support groove. The bearing is supported by bearing limiting clips inside the storage tube. When the placement seat rotates to the bottom, the bearing limiting clips open, and the bearing falls into the placement seat through the transition tube. When the placement seat with the bearing moves to the bottom of the pressing cylinder, the pressing cylinder presses down, and the magnetic attraction at the end of the output shaft of the pressing cylinder attracts the bearing. The movable base opens under pressure against the torsion spring, completing the bearing pressing. After the pressing is completed, the movable base resets, and the bearing placement plate continues to rotate and work in cycles.

[0017] Preferably, the bottom of the base has an infrared positioning transmitter in a circumferential array.

[0018] By adopting the above technical solution, when the placement seat rotates to the designated position, the infrared positioning transmitter of the circumferential array at the bottom of the placement seat emits an infrared signal to accurately position the crankshaft pump. This ensures that the placement seat is in the correct position during the pressing process, avoiding the impact of positional deviation on the bearing pressing accuracy. After positioning is completed, the pressing cylinder presses down to accurately press the bearing into the crankshaft pump on the base plate.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The support plate structure of the base plate and top plate in the frame of this application provides rigid support for the whole. The bearing placement disk driven by the servo motor, together with the placement seat of the circumferential array, realizes multi-station cyclic pressing and greatly improves production efficiency.

[0021] 2. The double-door movable base at the bottom of the placement seat of this application bears the weight through a torsion spring and can be opened under force during pressing. The placement seat is only used for bearing storage and guidance, avoiding damage to the bearing placement plate from direct cylinder pressure. At the same time, the guide ring connects each placement seat to ensure automatic and smooth feeding of the bearing.

[0022] 3. In this application, the storage pipe of the bearing pipeline is compatible with the inner diameter of the guide ring and the placement seat, and is combined with the detachable U-shaped frame and sliding groove structure to achieve precise positioning and stable support. The support groove at the bottom of the frame further enhances the support strength of the movable base, and the arc transition design reduces friction loss.

[0023] 4. The overall structure of this application improves pressing efficiency through multi-station cycle, distributed pressure support and precise positioning, and avoids the problem of accuracy decay of the turntable as a base, thus extending the service life of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a multi-station crankshaft pump bearing press-fitting device;

[0025] Figure 2 This is a schematic diagram of the bottom structure of a multi-station crankshaft pump bearing press-fitting device.

[0026] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Base plate; 12. Top plate; 13. Support plate; 2. Servo motor; 3. Bearing placement tray; 31. Placement seat; 311. Movable base; 312. Transition pipe; 313. Infrared positioning transmitter; 32. Guide ring; 33. Slide groove; 4. Bearing pipe; 41. Storage pipe; 411. Limiting plate; 412. Handle; 413. Bearing limiting clip; 42. Coupling mechanism; 421. Frame; 4211. Threaded sleeve; 4212. Protrusion; 4213. Support groove; 5. Press-fit cylinder. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0028] This application discloses a multi-station crankshaft pump bearing press-fitting device.

[0029] Reference Figure 1 and Figure 2A multi-station crankshaft pump bearing press-fitting device includes a frame 1, which comprises a base plate 11 and a top plate 12. The base plate 11 and the top plate 12 are connected by a support plate 13. A servo motor 2 is mounted at the top center of the base plate 11, and a bearing placement disk 3 is mounted on the output end of the servo motor 2. Several sets of placement seats 31 are arranged in a circular array on the bearing placement disk 3. The top plate 12 is respectively equipped with a bearing pipe 4 for bearing feeding and a press-fitting cylinder 5 for pressing the bearings in the placement seats 31 onto the base plate 11 within the crankshaft pump. The bearing pipe 4 and the press-fitting cylinder 5 are connected... Located at both ends of the bearing placement disk 3; placement seats 31, with a movable base 311 installed at the bottom of the placement seats 31, and the top of the placement seats 31 corresponding to the bearing pipe 4 and the press-fit cylinder 5, wherein the placement seats 31 are connected by an annular guide ring 32, and the depth of the placement seats 31 is less than the thickness of the bearing, and the top surface of the bearing located in the placement seat 31 is located between the bottom surface of the bearing pipe 4 and the bottom surface of the guide ring 32; bearing pipe 4, including storage tube 41, is fitted on the top plate 12, and the bottom of the storage tube 41 is located inside the guide ring 32. The servo motor 2 drives the bearing placement disk 3 to rotate, and the placement seats 31 arranged in a circular array on the placement disk rotate accordingly to the corresponding work positions. The bearing falls from the storage tube 41 of the bearing conduit 4, passes through the guide ring 32, and enters the placement seat 31. The depth of the placement seat 31 is less than the thickness of the bearing. The top surface of the bearing is located between the bottom surface of the bearing conduit 4 and the bottom surface of the guide ring 32. The bearings in the storage tube 41 can fall into the placement seat 31 one by one and rotate away. The next bearing moves along the guide ring 32 until it enters the next placement seat 31. When the placement seat 31 rotates to the position below the pressing cylinder 5, the pressing cylinder 5 is activated. The bearing is attracted by the magnetic attraction at the end of the output shaft of the pressing cylinder 5 and precisely pressed into the crankshaft pump on the base plate 11 along the placement seat 31. The placement seats 31 are connected by the guide ring 32 to realize continuous feeding and pressing of the bearings. The base plate 11 and the top plate 12 are connected by the support plate 13 to form the frame 1, which provides stable support for the entire device.

[0030] Reference Figure 1 and Figure 2 The movable base 311 at the bottom of the placement seat 31 adopts a double-door structure, and the movable base 311 is connected to the bearing placement plate 3 via a torsion spring. The torsion spring structure can support the weight of a set of bearing seats inside the placement seat 31. The double-door movable base 311 at the bottom of the placement seat 31 is connected to the bearing placement plate 3 by the torsion spring. The torsion spring supports the weight of a set of bearings inside the placement seat 31, ensuring that the placement seat 31 remains stable when not being press-fitted. During the press-fitting process, the bearings and the placement seat 31 are subjected to the pressure of the press-fitting cylinder 5. The double-door structure of the movable base 311 can open under the pressure, allowing the placement seat 31 to sink and ensuring that the bearings are successfully press-fitted into the crankshaft pump. After the press-fitting is completed, the movable base 311 is reset under the action of the torsion spring, and the placement seat 31 returns to its initial position, waiting for the next bearing feeding and press-fitting.

[0031] Reference Figure 1 and Figure 2 A limiting plate 411 is fixed on the outer wall of the storage tube 41. The limiting plate 411 is located above the point where the storage tube 41 penetrates the top plate 12, and a handle 412 is rotatably installed on the top of the storage tube 41. The outer diameter of the storage tube 41 is adapted to the inner side wall of the guide ring 32, and the inner diameter of the storage tube 41 is adapted to the inner diameter of the placement seat 31. A transition pipe opening 312 is opened on the top of the placement seat 31. The top inner diameter of the transition pipe opening 312 is adapted to the width of the guide ring 32, and the bottom inner diameter of the transition pipe opening 312 is adapted to the inner diameter of the bearing placement seat 31. The bottom of the storage tube 41 is detachably fitted with a mating mechanism 42 that slides with the bearing placement tray 3. This mechanism includes a U-shaped frame 421 with its opening facing the center of the bearing placement tray 3. The top of the frame 421 engages with the threaded outer wall of the storage tube 41 via a threaded sleeve 4211. The inner side of the frame 421 is fitted with a sliding groove 33 on the outer side of the bearing placement tray 3 via a protrusion 4212. The bottom of the frame 421 is flush with the bearing placement tray 3. A support groove 4213 for supporting the movable base 311 is also installed at the free end of the bottom of the frame 421, and both ends of the support groove 4213 have arc-shaped transitions. A bearing limiting clip 413 also movably passes through the bottom of the storage tube 41, supporting the bearing inside the storage tube 41. The servo motor 2 drives the bearing placement tray 3 to rotate, and the placement tray 31 rotates sequentially to the corresponding work position. The operator can rotate the storage tube 41, which contains several bearings, using the handle 412. Its outer diameter matches the inner wall of the guide ring 32, and its inner diameter matches the inner diameter of the placement seat 31, ensuring accurate bearing transmission path. The bottom mating mechanism 42 is connected to the storage tube 41 via a threaded sleeve 4211, and the limiting plate 411 at the top of the storage tube 41 prevents it from moving down excessively. The inner side protrusion 4212 of the U-shaped frame 421 of the mating mechanism 42 matches the slide groove 33 of the bearing placement plate 3 for positioning. The frame 421 fits against the bearing placement plate 3, and the support groove 4213 supports the movable base 311. The arc transition facilitates the smooth entry and exit of the movable base 311 within the support groove 4213. The bearing is supported by the bearing limiting clip 413 in the storage tube 41. When the placement seat 31 rotates to the bottom, the bearing limiting clip 413 opens, and the bearing falls into the placement seat 31 through the transition tube 312. When the placement seat 31 with the bearing moves to the bottom of the pressing cylinder 5, the pressing cylinder 5 presses down. The magnetic attraction at the end of the output shaft of the pressing cylinder 5 attracts the bearing. The movable base 311 opens under pressure against the torsion spring, completing the bearing pressing. After the pressing is completed, the movable base 311 resets, and the bearing placement plate 3 continues to rotate and work in cycles.

[0032] Reference Figure 1 and Figure 2The bottom circumferential array of the placement seat 31 has an infrared positioning transmitter 313. When the placement seat 31 rotates to the designated position, the infrared positioning transmitter 313 of the bottom circumferential array of the placement seat 31 emits an infrared signal to accurately position the installation position of the crankshaft pump, thereby ensuring that the placement seat 31 is in an accurate position during the press-fitting process and avoiding the impact of positional deviation on the bearing press-fitting accuracy. After the positioning is completed, the press-fitting cylinder 5 presses down to accurately press the bearing into the crankshaft pump on the base plate 11.

[0033] Working principle: The servo motor 2 at the top center of the substrate 11 drives the bearing placement disk 3 to rotate. The placement seats 31 arranged in a circular array on the bearing placement disk 3 rotate with it. When the placement seats 31 move to the area below the bearing channel 4 on the top plate 12, the bearing limiting clip 413 at the bottom of the storage tube 41 releases the bearing. The bearing falls through the storage tube 41 and enters the placement seat 31 through the guide ring 32 that matches the outer diameter of the storage tube 41 and the transition port 312 at the top of the placement seat 31. Since the depth of the placement seat 31 is less than the thickness of the bearing, the top surface of the bearing is located at the bottom surface of the bearing channel 4 and the guide ring 31. Between the bottom surfaces of ring 32, a single bearing can enter the placement seat 31, and the next bearing enters the next placement seat 31 via the guide ring 32. At this time, the U-shaped frame 421 in the mating mechanism 42 at the bottom of the storage tube 41 is connected to the storage tube 41 through the threaded sleeve 4211. Its protrusion 4212 is adapted to the sliding groove 33 of the bearing placement plate 3. The frame 421 fits against the placement plate to stabilize the storage tube 41. The support groove 4213 at the bottom of the frame 421 supports the double-door movable base 311 at the bottom of the placement seat 31, preventing the bearing in the storage tube 41 from being exposed when the movable base 311 is opened. When the bearing-containing placement seat 31 rotates to below the pressing cylinder 5, the magnetic pressure rod at the driving end of the pressing cylinder 5 attracts the bearing and presses it into the crankshaft pump on the base plate 11. The infrared positioning transmitter 313 at the bottom of the placement seat 31 ensures accurate pressing position. Multi-station cyclic operation realizes automatic pressing of bearings. The guide ring 32 connects each placement seat 31 to realize orderly conveying of bearings. The limiting plate 411 and the handle 412 facilitate the installation and positioning of the storage tube 41.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-station crankshaft pump bearing press-fitting device, characterized in that: The system includes a frame (1), which includes a base plate (11) and a top plate (12). The base plate (11) and the top plate (12) are connected by a support plate (13). A servo motor (2) is installed at the top center of the base plate (11). A bearing placement disk (3) is installed on the output end of the servo motor (2). Several sets of placement seats (31) are arranged in a circular array on the bearing placement disk (3). A bearing pipe (4) for bearing feeding and a press cylinder (5) in a crankshaft pump for press-fitting the bearing in the placement seat (31) onto the base plate (11) are respectively installed on the top plate (12). The bearing pipe (4) and the press cylinder (5) are located at both ends of the bearing placement disk (3). Placement seat (31), the bottom of which is equipped with a movable base (311), the top of which corresponds to the bearing pipe (4) and the press cylinder (5), wherein the placement seats (31) are connected by an annular guide ring (32), and the depth of the placement seat (31) is less than the thickness of the bearing, and the top surface of the bearing located in the placement seat (31) is located between the bottom surface of the bearing pipe (4) and the bottom surface of the guide ring (32); The bearing conduit (4) includes a storage tube (41) which is fitted onto the top plate (12) and the bottom of the storage tube (41) is located inside the guide ring (32).

2. The multi-station crankshaft pump bearing press-fitting device according to claim 1, characterized in that: The movable base (311) at the bottom of the placement seat (31) adopts a double-door structure, and the movable base (311) is connected to the bearing placement plate (3) through a torsion spring, wherein the torsion spring structure can bear the weight of a set of bearing seats inside the placement seat (31).

3. The multi-station crankshaft pump bearing press-fitting device according to claim 1, characterized in that: A limiting plate (411) is fixed on the outer wall of the storage tube (41). The limiting plate (411) is located above the storage tube (41) where it passes through the top plate (12), and a handle (412) is rotatably installed on the top of the storage tube (41).

4. The multi-station crankshaft pump bearing press-fitting device according to claim 3, characterized in that: The outer diameter of the storage tube (41) is adapted to the inner wall of the guide ring (32), the inner diameter of the storage tube (41) is adapted to the inner diameter of the placement seat (31), and the top of the placement seat (31) is provided with a transition port (312). The top inner diameter of the transition port (312) is adapted to the width of the guide ring (32), and the bottom inner diameter of the transition port (312) is adapted to the inner diameter of the bearing placement seat (31).

5. The multi-station crankshaft pump bearing press-fitting device according to claim 4, characterized in that: The bottom of the storage tube (41) is detachably equipped with a mating mechanism (42) that is slidably connected to the bearing placement disk (3). The mechanism includes a U-shaped frame (421) with its opening facing the center of the bearing placement disk (3). The top of the frame (421) is threadedly engaged with the outer wall of the storage tube (41) through a threaded sleeve (4211). The inner side of the frame (421) is adapted to the sliding groove (33) on the outer side of the bearing placement disk (3) through a protrusion (4212). The bottom of the frame (421) is in contact with the bearing placement disk (3).

6. The multi-station crankshaft pump bearing press-fitting device according to claim 5, characterized in that: The bottom free end of the frame (421) is also equipped with a support groove (4213) for supporting the movable base (311), and the two ends of the support groove (4213) are provided with arc transitions.

7. The multi-station crankshaft pump bearing press-fitting device according to claim 3, characterized in that: The bottom of the storage tube (41) is also movably connected to a bearing limiting clip (413), which is used to support the bearing inside the storage tube (41).

8. The multi-station crankshaft pump bearing press-fitting device according to claim 1, characterized in that: The bottom of the placement base (31) has an infrared positioning transmitter (313) arranged in a circular array.

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