Plunger pump assembling and machining equipment

Abstract

The invention discloses plunger pump assembling and machining equipment, and belongs to the technical field of mechanical assembling, the plunger pump assembling and machining equipment comprises an assembling robot, an assembling table and a conveying belt, the assembling table is used for assembling a plunger cylinder body and a plunger, the conveying belt is used for conveying the plunger, and the assembling robot comprises a track plate suspended through a supporting frame; the track plate is connected with an assembling mechanical arm through a track moving part, the assembling mechanical arm is connected with a lower control ring through a rotating switching part, and a plurality of assembling moving seats are arranged on the outer side wall of the lower control ring. Through the unique design of the clamping openings and upper and lower stress points in the clamping disc, the plunger is actively corrected and kept in the vertical state in the assembling process, it is guaranteed that the plunger is accurately inserted into a cylinder plunger hole in the vertical posture, the risk of scratching the inner wall of the hole is greatly reduced, the sealing performance and the service life of a plunger pump during operation are guaranteed, and the service life of the plunger pump is prolonged. Inclination of the plunger is fundamentally avoided, the problem that installation is inconvenient due to inclination of the plunger caused by preassembling of the sliding shoe is thoroughly solved, and accurate and efficient assembling is achieved.

Description

Technical Field

[0001] This invention relates to the field of mechanical assembly technology, and in particular to a plunger pump assembly and processing equipment. Background Technology

[0002] Swashplate piston pumps control the reciprocating stroke of the pistons through the tilt angle of the swashplate. Through the orderly distribution of fluid via the distributor plate, the rotational mechanical energy input from the main shaft is converted into hydraulic pressure energy output via the reciprocating motion of the cylinder block and piston assembly. In traditional assembly processes, piston pump assembly faces a significant technical challenge: because the slippers need to be pre-installed at a certain angle (to match the swashplate tilt angle), the pistons connected to them are in a non-vertical tilted state during the initial installation stage. This "tilted" state of the pistons causes the following main problems when they are inserted one by one into the corresponding cylinder block piston holes: The assembly process is extremely inconvenient: operators need to manually adjust and maintain the position and angle of each tilting plunger, and then carefully align and push it into the plunger hole with a large depth-to-diameter ratio. The process is tedious and laborious, requires high operating skills, and has low assembly efficiency.

[0003] Critical mating surfaces are easily damaged: The outer edge of the plunger and the inner wall of the cylinder plunger bore form a precise mating pair. Forced insertion while tilted can easily cause the plunger's edges or outer surface to scrape or even chip against the bore opening or wall. This damage directly compromises the surface finish and geometric accuracy of the mating surfaces.

[0004] Seriously threatens product performance: The above-mentioned assembly damage will cause the sealing gap between the plunger and the bore wall to increase or become uneven, which will cause serious internal leakage (reduction in volumetric efficiency) under high pressure. At the same time, it may exacerbate wear and temperature rise, and affect the smooth operation and service life of the pump.

[0005] Current assembly methods rely heavily on manual experience and skills, or are supplemented by simple guide fixtures. However, none of these methods can fundamentally resolve the contradiction between the initial posture (tilt) of the plunger and the final required posture (vertical centering insertion) of the plunger. As a result, it is difficult to guarantee the consistency of assembly quality, which has become one of the bottlenecks restricting the large-scale and automated production of high-quality plunger pumps. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art by proposing a plunger pump assembly and processing equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A plunger pump assembly and processing equipment includes an assembly robot, an assembly table for assembling the plunger cylinder body and the plunger, and a conveyor belt for conveying the plunger. The assembly robot includes a track plate suspended by a support frame. The track plate is connected to an assembly robot arm via a track moving component. The assembly robot arm is connected to a lower control ring via a rotation switching component. The outer wall of the lower control ring is provided with multiple assembly moving seats. The assembly moving seats are connected to a clamping plate via a translation adjustment component. The clamping plate has a clamping port adapted to the plunger. The side wall of the clamping port has a notch for the plunger to be installed. The lower control ring is connected to the upper control ring via multiple press-fit push rods. The inner wall of the upper control ring is provided with a press-fit seat for mounting the slipper. The inner wall of the press-fit seat is provided with a limiting assembly for fastening the slipper. The assembly platform is located below the track plate, and a press-fit base for installing the plunger cylinder is provided above the assembly platform. The press-fit base has a press-fit groove adapted to the plunger cylinder, and the inner wall of the press-fit groove is provided with a positioning protrusion for pressing the plunger.

[0008] As a preferred embodiment, the rotating switching component includes a turntable rotatably mounted on an assembly robotic arm. The bottom of the turntable is connected to a lower control ring via multiple connecting columns. A switching motor is mounted on the assembly robotic arm, and a switching gear is mounted at the output end of the switching motor. A switching gear ring that meshes with the switching gear is fixedly mounted on the turntable.

[0009] As a preferred embodiment, the translation adjustment component includes a translation slide opening formed on the assembly moving seat, and a translation slider controlled by an electric push rod is provided on the inner wall of the translation slide opening. The translation slider is connected to the clamping plate through a torsion connector.

[0010] As a preferred embodiment, the torsion connector includes a connecting vertical column, the top of which is rotatably connected to the translation slider, and the bottom of which is fixedly connected to the clamping plate via a crossbar. A torsion gear is provided on the outer wall of the connecting vertical column, and a torsion rack that meshes with the torsion gear is provided at the bottom of the assembly moving seat.

[0011] As a preferred embodiment, the limiting assembly includes multiple limiting push rods inclinedly disposed on the outer wall of the pressing seat. The output end of the limiting push rod is connected to a limiting locking rod. The limiting locking rod consists of an upper short locking rod and a lower long locking rod. The pressing seat has an insertion port for the limiting locking rod to pass through.

[0012] As a preferred embodiment, the track moving component includes an electric slide rail mounted on a track plate, an electric slider mounted on the electric slide rail, and an assembly robotic arm mounted at the bottom of the electric slider, which drives the assembly robotic arm to move horizontally.

[0013] As a preferred embodiment, the inner diameter of the clamping port is smaller than the outer diameter of the plunger ball end, and the plunger is allowed to enter the clamping port from the notch. When the plunger is under force, the clamping port can ensure that the ball end is locked on the inner wall of the clamping port, ensuring that the plunger is in a vertical state.

[0014] As a preferred embodiment, the conveyor belt is provided with a positioning belt, and the positioning belt has a positioning groove adapted to the plunger to ensure the stability of the plunger during the conveying process.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, through the unique clamping port and upper and lower force points designed on the clamping plate, actively corrects and maintains the plunger in a vertical state during assembly, ensuring that the plunger is accurately inserted into the cylinder plunger hole in a vertical posture. This greatly reduces the risk of scratching the inner wall of the hole, ensures the sealing performance and life of the plunger pump during operation, fundamentally avoids plunger tilting, and completely solves the problem of installation inconvenience caused by plunger tilting due to pre-installed slippers, achieving precise and efficient assembly.

[0016] 2. This invention employs a step-by-step press-fit process, first vertically inserting the plunger, then releasing the clamps and press-fitting the slipper. The process design is reasonable. The positioning protrusion at the bottom of the cylinder provides a reaction force during the final press-fit, forming a stable press-fit environment, ensuring that the ball head and ball groove are pressed into place, ensuring reliable connection, and improving the consistency and reliability of the assembly process.

[0017] 3. This invention utilizes the cooperation between the positioning groove of the conveyor belt and the notch of the clamping plate to realize the automatic and orderly conveying and gripping of the plungers, replacing the manual placement one by one. It is highly efficient and accurate in positioning. By rotating the switching component and translating the adjustment component, multiple clamping plates can be controlled to feed materials in sequence, and the posture and position of the clamping plates can be adjusted to prepare for the subsequent synchronous assembly of multiple plungers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a plunger pump assembly and processing equipment proposed in this invention; Figure 2 This is a schematic diagram of the assembly robot in a plunger pump assembly and processing equipment proposed in this invention; Figure 3 This is a schematic diagram of the conveyor belt structure in a plunger pump assembly and processing equipment proposed in this invention; Figure 4 This is a schematic diagram of the combined structure of the lower control ring and the press-fitted upper control ring in a plunger pump assembly and processing equipment proposed in this invention; Figure 5 This is a schematic diagram showing the installation relationship between the lower control ring, the press-fit upper control ring, and the clamping plate in a plunger pump assembly and processing equipment proposed in this invention. Figure 6This is a schematic diagram of the clamping disc and assembly moving seat in a plunger pump assembly and processing equipment proposed in this invention; Figure 7 This is a schematic diagram of the translation adjustment component in a plunger pump assembly and processing equipment proposed in this invention; Figure 8 This is a schematic diagram of the installation structure of a limit assembly in a plunger pump assembly and processing equipment proposed in this invention.

[0019] In the diagram: 1. Assembly table; 2. Conveyor belt; 3. Track plate; 4. Assembly robotic arm; 5. Lower control ring; 6. Assembly moving seat; 7. Clamping plate; 8. Clamping port; 9. Press-fit push rod; 10. Press-fit upper control ring; 11. Press-fit seat; 12. Press-fit base; 13. Turntable; 14. Switching motor; 15. Switching gear ring; 16. Translation slide; 17. Translation slider; 18. Connecting vertical column; 19. Horizontal bar; 20. Torsion gear; 21. Torsion rack; 22. Limit push rod; 23. Upper short clamping rod; 24. Lower long clamping rod; 25. Electric slide rail; 26. Electric slider; 27. Positioning belt; 28. Positioning protrusion. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example, refer to Figures 1 to 8 A plunger pump assembly and processing equipment includes an assembly robot, an assembly table 1 for assembling the plunger cylinder body and the plunger, and a conveyor belt 2 for conveying the plunger. Further, the conveyor belt 2 is provided with a positioning belt 27, which has a positioning groove adapted to the plunger to ensure the stability of the plunger during the conveying process (the plunger's ball end and plunger body are arranged in an arc shape, and its outer diameter is the smallest, which is the existing conventional setting). It should be noted that during the assembly of the plunger pump, the plungers are placed into the positioning slots on the positioning belt 27 one by one to achieve the conveying of the plungers. When the assembly robot arm 4 controls the clamping plate 7 to move onto the conveying path of the positioning belt 27, the ball end of the plunger will automatically move from the notch opened at the clamping port 8 into the clamping port 8, and the ball end will be stuck at the clamping port 8, thereby realizing the assembly and feeding of the plungers one by one. The assembly robot includes a track plate 3 suspended by a support frame. The track plate 3 is connected to an assembly robotic arm 4 via a track moving component. The assembly robotic arm 4 has a vertical extension function, which is a common technical means for robotic arms and will not be described in detail here. Furthermore, the track moving component includes an electric slide rail 25 set on the track plate 3. An electric slider 26 is set on the electric slide rail 25. The assembly robotic arm 4 is set at the bottom of the electric slider 26 and is driven by the electric slider 26 to move horizontally. The conveyor belt 2 is located at one end of the electric slide rail 25, and the assembly table 1 is located at the other end of the electric slide rail 25. This arrangement allows for the adjustment of the plunger pump assembly during the process of the plunger moving to the assembly table 1 for assembly.

[0024] The assembly robot arm 4 is connected to the lower control ring 5 via a rotating switching component. Further, the rotating switching component includes a turntable 13 rotatably mounted on the assembly robot arm 4. The bottom of the turntable 13 is connected to the lower control ring 5 via multiple connecting posts. The assembly robot arm 4 is equipped with a switching motor 14. The output end of the switching motor 14 is equipped with a switching gear. The turntable 13 is fixedly equipped with a switching gear ring 15 that meshes with the switching gear.

[0025] By rotating the switching element, the turntable 13 can be rotated by the switching motor 14, thereby aligning the clamping disc 7 with the position of the conveyor belt 2 one by one, and realizing automatic feeding of the plunger.

[0026] The outer wall of the lower control ring 5 is provided with a plurality of assembly moving seats 6. The assembly moving seats 6 are connected to the clamping plate 7 through a translation adjustment component. Further, the translation adjustment component includes a translation slide 16 opened on the assembly moving seat 6. The inner wall of the translation slide 16 is provided with a translation slider 17 controlled by an electric push rod for translation. The translation slider 17 is connected to the clamping plate 7 through a torsion connector. The torsion connector includes a connecting column 18, the top of which is rotatably connected to the translation slider 17, and the bottom of which is fixedly connected to the clamping plate 7 via a crossbar 19. A torsion gear 20 is provided on the outer wall of the connecting column 18, and a torsion rack 21 that meshes with the torsion gear 20 is provided at the bottom of the assembly moving seat 6.

[0027] The clamping plate 7 has a clamping port 8 that is adapted to the plunger. The side wall of the clamping port 8 has a notch for the installation of the plunger. The inner diameter of the clamping port 8 is smaller than the outer diameter of the plunger ball end, and it is sufficient for the plunger to enter the clamping port 8 from the notch. When the plunger is under force, the clamping port 8 can ensure that the ball end is locked on the inner wall of the clamping port 8, ensuring that the plunger is in a vertical state.

[0028] The lower control ring 5 is connected to the upper control ring 10 via multiple press-fit push rods 9. The inner wall of the upper control ring 10 is provided with a press-fit seat 11 for installing the slipper, and the inner wall of the press-fit seat 11 is provided with a limiting assembly for fastening the slipper. The limiting assembly includes multiple limiting push rods 22 inclinedly disposed on the outer side wall of the pressing base 11. The limiting push rods 22 are a type of electric push rods. The output end of the limiting push rods 22 is connected to a limiting locking rod. The limiting locking rod consists of an upper short locking rod 23 and a lower long locking rod 24. The pressing base 11 has an insertion port for the limiting locking rod to pass through. The lower long locking rod 24 restricts the downward movement of the slipper, and the upper short locking rod 23 restricts the upward movement of the slipper, thus isolating the limiting push rods 22 to control the movement distance and achieve different limits on the slipper.

[0029] Assembly platform 1 is located below track plate 3. Above assembly platform 1 is press base 12 for installing plunger cylinder body. Press base 12 has a press groove adapted to plunger cylinder body. The inner wall of press groove is provided with positioning protrusion 28 for pressing plunger. Positioning protrusion 28 penetrates the flow port at the bottom of plunger cylinder body and contacts plunger during assembly to prevent downward movement of blockage.

[0030] In this invention, during the assembly of the plunger pump, the electric slider 26 moves on the electric slide rail 25, driving the assembly robot arm 4 to the conveyor belt 2. The electric push rod drives the translation slider 17 to move the clamping plate 7 from the inside out. Under the combined action of the torsion gear 20 and the torsion rack 21, the clamping plate 7 is rotated 180 degrees from its original inward orientation to an outward orientation. At this time, the plunger conveyed by the conveyor belt 2 enters the clamping port 8 through the notch opened at the clamping port 8. Furthermore, due to the action of the plunger's ball end... The plunger is suspended in the clamping port 8. At this time, the turntable 13 is rotated by the switching motor 14, so that multiple clamping plates 7 are combined with the plunger conveyed by the conveyor belt 2 one by one. During the process of feeding the plunger one by one, the lower long clamping rod 24 is extended by the limit push rod 22. At this time, the slip shoe is placed in the pressing seat 11. Then, the upper short clamping rod 23 is extended by the limit push rod 22. Under the joint action of the lower long clamping rod 24 and the upper short clamping rod 23, the slip shoe is clamped and positioned, so that it cannot move up and down. During the process of moving the plunger mounted on the assembly robot arm 4 to the assembly table 1, the control pressing push rod 9 drives the pressing upper control ring 10 to move downward, which in turn drives the slide shoe in the pressing seat 11 to move downward. The downward movement of the slide shoe will cause the ball end of the plunger to contact the ball groove opened at the bottom of the slide shoe. At this time, the inner wall of the ball groove will apply pressure to the ball end (the pressure is not enough to press the ball end into the ball groove). At this time, the plunger generates downward pressure from the ball end, and the lower surface of the ball end will be stuck in the clamping port 8 on the clamping plate 7. At this time, under the action of the two force points, it can be ensured that the bottom of the plunger is in a state perpendicular to the clamping plate 7. Since the clamping plate 7 is in a horizontal state, the plunger is in a vertical state. At this time, the assembly robot arm 4 drives the plunger to move downward and insert it into the plunger hole in the plunger cylinder body in the pressing base 12, thereby ensuring that multiple plungers are accurately inserted together and avoiding damage to the cylinder plunger hole. After the plunger and plunger cylinder body are assembled, the electric push rod drives the translation slider 17 to move outward, causing the mud clamping plate 7 to disengage from the plunger. The pressing push rod 9 drives the slipper in the pressing seat 11 to press downward. At this time, the bottom of the plunger located inside the plunger cylinder body is blocked by the positioning protrusion 28 and cannot move down. The pressure generated by the slipper will press the ball groove on the slipper and the ball end of the plunger together. After the slipper assembly is completed, the control limit push rod 22 drives the lower long clamp rod 24 to retract, releasing the downward limit on the slipper and realizing the combination of the slipper and the plunger cylinder body.

[0031] This invention systematically solves the core pain points in the traditional assembly of swashplate piston pumps through a series of innovative mechanical structures and automated control designs. It achieves automatic piston feeding, active posture correction, precise vertical insertion, and reliable pressing of the slipper, resulting in significant comprehensive benefits in terms of component protection, quality improvement, efficiency enhancement, and safety assurance.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plunger pump assembly and processing equipment, characterized in that, The assembly robot includes an assembly table (1) for assembling the piston cylinder body and the piston, and a conveyor belt (2) for conveying the piston. The assembly robot includes a track plate (3) suspended by a support frame. The track plate (3) is connected to an assembly robot arm (4) via a track moving component. The assembly robot arm (4) is connected to a lower control ring (5) via a rotation switching component. The outer side wall of the lower control ring (5) is provided with multiple assembly moving seats (6). The assembly moving seats (6) are connected to a clamping plate (7) via a translation adjustment component. The clamping plate (7) is provided with a clamping port (8) adapted to the plunger. The side wall of the clamping port (8) is provided with a notch for the plunger to be installed. The lower control ring (5) is connected to the upper control ring (10) via multiple press-fit push rods (9). The inner wall of the upper control ring (10) is provided with a press-fit seat (11) for installing the slipper. The inner wall of the press-fit seat (11) is provided with a limiting assembly for fastening the slipper. The assembly platform (1) is located below the track plate (3). A press-fit base (12) for installing the plunger cylinder is provided above the assembly platform (1). The press-fit base (12) has a press-fit groove adapted to the plunger cylinder. The inner wall of the press-fit groove is provided with a positioning protrusion (28) for pressing the plunger.

2. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The rotating switching component includes a turntable (13) rotatably mounted on the assembly robot arm (4). The bottom of the turntable (13) is connected to the lower control ring (5) through multiple connecting columns. The assembly robot arm (4) is equipped with a switching motor (14). The output end of the switching motor (14) is equipped with a switching gear. The turntable (13) is fixedly equipped with a switching gear ring (15) that meshes with the switching gear.

3. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The translation adjustment component includes a translation slide (16) opened on the assembly moving seat (6), and a translation slider (17) controlled by an electric push rod is provided on the inner wall of the translation slide (16). The translation slider (17) is connected to the clamping plate (7) through a torsion connector.

4. The plunger pump assembly and processing equipment according to claim 3, characterized in that, The torsion connector includes a connecting column (18), the top of which is rotatably connected to the translation slider (17), and the bottom is fixedly connected to the clamping plate (7) via a crossbar (19). A torsion gear (20) is provided on the outer wall of the connecting column (18), and a torsion rack (21) that meshes with the torsion gear (20) is provided at the bottom of the assembly moving seat (6).

5. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The limiting assembly includes multiple limiting push rods (22) inclinedly arranged on the outer wall of the press base (11). The output end of the limiting push rod (22) is connected to a limiting clamping rod. The limiting clamping rod is composed of an upper short clamping rod (23) and a lower long clamping rod (24). The press base (11) is provided with an insertion port for the limiting clamping rod to pass through.

6. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The track moving component includes an electric slide rail (25) mounted on the track plate (3), an electric slider (26) mounted on the electric slide rail (25), and an assembly robot arm (4) mounted at the bottom of the electric slider (26). The assembly robot arm (4) is driven to move horizontally by the electric slider (26).

7. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The inner diameter of the clamping port (8) is smaller than the outer diameter of the plunger ball head end, and the plunger can enter the clamping port (8) from the notch. When the plunger is under force, the clamping port (8) can ensure that the ball head end is locked on the inner wall of the clamping port (8) and ensure that the plunger is in a vertical state.

8. The plunger pump assembly and processing equipment according to claim 1, characterized in that, The conveyor belt (2) is provided with a positioning belt (27), and the positioning belt (27) is provided with a positioning groove adapted to the plunger to ensure the stability of the plunger during the conveying process.

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