Plunger assembly machining system and method

Abstract

The invention relates to the technical field of plunger pumps, in particular to a plunger assembly machining system and method. The plunger pump machining system comprises a machine body assembly which comprises a driving unit and a workbench; the plunger assembly comprises a plunger unit and a seat unit; the plunger unit comprises a plunger rod and a ball head; the seat unit comprises an abutting plate, a hemispherical seat and a closing ring; the closing-in assembly comprises a base unit, a cone mold unit and an elastic unit; the base unit is hollow; the cone die unit comprises a third ring and a fourth ring; the plunger assembly machining system further comprises a first closing-in state and a second closing-in state. Therefore, the problem that the closing ring is difficult to process when the plunger assembly is processed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plunger pumps, and in particular to a plunger component processing system and method. Background Art

[0002] The plunger pump is an important component in the working process of the engine. It is mainly composed of the plunger pump cylinder and the plunger assembly. Under the action of high-pressure oil, the plunger assembly reciprocates in the plunger pump cylinder to realize the delivery of hydraulic oil. The processing accuracy and quality of the plunger assembly directly affect the performance and life of the plunger pump.

[0003] The plunger assembly includes a plunger unit and a seat unit. During the processing of the plunger assembly, the ball head of the plunger unit needs to be inserted into the hemispherical seat of the seat unit and the closing ring needs to be closed. However, during the closing process, it is necessary not only to ensure that the ball head is adapted to the hollow spherical cavity after the seat unit is closed, but also to ensure that the ball head can rotate. Therefore, during the processing, the closing ring usually needs to be reshaped twice, which greatly reduces the processing efficiency. Summary of the invention

[0004] In order to solve the problem of difficulty in machining a closing ring during machining of a plunger assembly, the present invention provides a plunger assembly machining system and method.

[0005] In a first aspect, the present invention provides a plunger assembly processing system, the plunger assembly processing system comprising: A machine body assembly, the machine body assembly comprising a driving unit and a workbench; the driving unit and the workbench are detachably connected; A plunger assembly, the plunger assembly comprises a plunger unit and a seat unit; the plunger unit comprises a plunger rod and a ball head; one end of the plunger rod is fixedly connected to the ball head; the seat unit comprises an abutment plate, a hemispherical seat, and a closing ring; the abutment plate, the hemispherical seat, and the closing ring are fixedly connected in sequence; the minimum inner diameter of the closing ring is greater than the diameter of the ball head; the driving unit is drivingly connected to the abutment plate; A closing component, the closing component comprises a base unit, a cone mold unit, and an elastic unit; the base unit is configured to be hollow; the cone mold unit comprises a third ring and a fourth ring; one end of the third ring is fixedly connected to one end of the fourth ring; the inner diameter of the end of the third ring close to the fourth ring is the same as the inner diameter of the fourth ring; the inner diameter of the end of the third ring away from the fourth ring is larger than the inner diameter of the fourth ring; one end of the elastic unit is detachably connected to the bottom of the hollow cavity of the base unit, and the other end extends toward the opening direction of the hollow cavity of the base unit; the end of the base unit away from the opening of the cavity is detachably connected to the workbench; The plunger assembly processing system also includes a first closing state and a second closing state; the first closing state includes the outer circumferential wall of the third ring and / or the outer circumferential wall of the fourth ring abutting against the inner circumferential wall of the base unit, the base unit restricts the cone mold unit from moving toward the elastic unit, one end of the plunger rod abuts against one end of the elastic unit, the hemispherical seat is sleeved on the outer circumferential side of the ball head, and the end of the closing ring away from the hemispherical seat abuts against the inner circumferential wall of the third ring; the second closing state includes the closing ring closing along the connection between the closing ring and the ball head, the minimum inner diameter of the closing ring after closing is smaller than the diameter of the ball head, and the outer circumferential wall of the hemispherical seat or the outer circumferential wall of the closing ring abuts against the inner circumferential wall of the fourth ring.

[0006] In some embodiments, the outer diameter of the closing ring gradually increases from one end of the closing ring close to the hemispherical seat toward the other end.

[0007] In some embodiments, 16°≤A≤20°; wherein A is the angle between the outer peripheral wall of the closing ring and the central axis of the hemispherical seat perpendicular to the abutment plate.

[0008] In some embodiments, L1>L2; wherein L1 is the distance between the center of the hemispherical seat and the end surface of the closing ring away from the hemispherical seat, and L2 is the distance between the two ends of the closing ring.

[0009] In some embodiments, 0.05 mm ≤ B; wherein B is the difference between the inner diameter of the fourth ring and the outer diameter of the hemispherical seat.

[0010] In some embodiments, 11°≤C≤A; wherein C is the angle between the inner circumferential wall of the third ring and the central axis of the cone mold unit.

[0011] In some embodiments, the base unit includes a seat body, a first ring, and a second ring; the first ring, the second ring, and the seat body are fixedly connected in sequence; the inner diameter of the first ring gradually decreases in the direction approaching the second ring; the seat body is detachably connected to one end of the elastic unit; the first closing state also includes the inner circumferential wall of the second ring abutting against the outer circumferential wall of the plunger rod near one end of the elastic unit.

[0012] In some embodiments, step S10, based on the closing requirement of the plunger assembly, the plunger assembly processing system enters a first closing state; wherein the first closing state includes the outer peripheral wall of the third ring and / or the outer peripheral wall of the fourth ring abutting against the inner peripheral wall of the base unit, the base unit restricts the cone mold unit from moving in a direction close to the elastic unit, one end of the plunger rod abuts against one end of the elastic unit, the hemispherical seat is sleeved on the outer peripheral side of the ball head, and the end of the closing ring away from the hemispherical seat abuts against the inner peripheral wall of the third ring; Step S20, based on the plunger assembly processing system entering the first closing state, the driving unit drives the seat unit to move to a set position in a direction close to the elastic unit; Step S30, based on the seat unit moving toward the direction close to the elastic unit to the set position, the plunger assembly processing system switches to the second closing state; wherein, the second closing state includes the closing ring closing along the connection between the closing ring and the ball head, the minimum inner diameter of the closing ring after closing is smaller than the diameter of the ball head, and the outer peripheral wall of the hemispherical seat or the outer peripheral wall of the closing ring abuts against the inner peripheral wall of the fourth ring.

[0013] In some embodiments, step S10 includes: Step S11, based on the closing requirements of the plunger assembly, lubricating oil is applied to the outer peripheral side of the ball head, the inner peripheral wall of the hemispherical seat and the inner peripheral wall of the cone mold unit, and the hemispherical seat is sleeved on the outer peripheral side of the ball head; Step S12, based on the hemispherical seat being sleeved on the outer peripheral side of the ball head, the cone mold unit is placed in the base unit; wherein the third ring outer peripheral wall and / or the fourth ring outer peripheral wall of the cone mold unit abut against the inner peripheral wall of the base unit, and the base unit restricts the cone mold unit from moving in a direction close to the elastic unit; Step S13, based on the cone mold unit being placed in the base unit, one end of the plunger rod is passed through the cone mold unit until it abuts against one end of the elastic unit, and the end of the closing ring away from the hemispherical seat abuts against the inner circumferential wall of the third ring.

[0014] In some embodiments, the time consumed by the process of the seat unit moving toward the elastic unit to the set position in step S20 is greater than or equal to a set threshold.

[0015] In order to solve the problem of difficulty in processing the closing ring during the processing of the plunger assembly, the present invention has the following advantages: The plunger assembly processing system includes a first closing state and a second closing state. The first closing state includes the outer peripheral wall of the third ring and / or the outer peripheral wall of the fourth ring abutting against the inner peripheral wall of the base unit, the hemispherical seat is sleeved on the outer peripheral side of the ball head, and the end of the closing ring away from the hemispherical seat abuts against the inner peripheral wall of the third ring. The second closing state includes the closing ring closing along the connection between the closing ring and the ball head. The third ring of the cone die unit of the closing assembly abuts against the end of the closing ring away from the hemispherical seat, so that when the closing assembly closes the closing ring, the end of the closing ring away from the hemispherical seat first bears the closing pressure. At this time, the force arm of the closing ring is longer, so that the closing pressure required for the closing ring is reduced, which is more labor-saving. At the same time, the force and deformation of the closing ring from one end to the other end are more uniform, thereby achieving a one-time closing of the closing ring without the need for secondary shaping, thereby improving the processing efficiency of the closing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a plunger assembly processing system according to a first embodiment is shown; Figure 2 A partial schematic diagram of a plunger assembly processing system according to a first embodiment is shown; Figure 3 A schematic diagram of a plunger assembly processing system of a second embodiment is shown; Figure 4 A partial schematic diagram of a plunger assembly processing system of a second embodiment is shown; Figure 5 A partial schematic diagram of a plunger assembly processing system of a third embodiment is shown; Figure 6 A flow chart of a method for processing a plunger assembly according to an embodiment is shown.

[0017] Figure numerals: 01 plunger assembly; 11 plunger unit; 111 plunger rod; 112 ball head; 12 seat unit; 121 abutment plate; 122 hemispherical seat; 123 closing ring; 02 closing assembly; 21 base unit; 211 seat body; 212 first ring; 213 second ring; 22 cone mold unit; 221 third ring; 222 fourth ring; 223 fifth ring; 23 elastic unit. DETAILED DESCRIPTION

[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0019] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0020] During the processing of the plunger assembly 01, it is necessary to close the closing ring 123 of the seat unit 12 by connecting one end of the plunger rod 111 of the plunger unit 11 with the ball head 112. During the closing process of the closing ring 123, it is usually closed from one side close to the hemispherical seat 122 to the other side. However, this closing method not only requires a large closing force, but also often requires secondary shaping to ensure the adaptation of the closing ring 123 and the ball head 112, which makes the closing efficiency of the closing ring 123 low and increases the processing difficulty. This embodiment provides a plunger assembly 01 processing system, such as Figure 1 As shown, the plunger assembly 01 processing system may include a body assembly, a plunger assembly 01 , and a closing assembly 02 .

[0021] The body assembly may include a driving unit and a workbench. The driving unit may drive the plunger assembly processing system to process the plunger. The workbench may be used to support and fix the entire plunger assembly processing system, and the driving unit and the workbench may be detachably connected.

[0022] like Figure 1 As shown, the plunger assembly 01 may include a plunger unit 11 and a seat unit 12. The plunger unit 11 may include a plunger rod 111 and a ball head 112. One end of the plunger rod 111 is fixedly connected to the ball head 112. Figure 5 As shown, the seat unit 12 may include an abutment plate 121, a hemispherical seat 122, and a closing ring 123. The abutment plate 121, the hemispherical seat 122, and the closing ring 123 may be fixedly connected in sequence. The minimum inner diameter of the closing ring 123 may be greater than the diameter of the ball head 112, so that the seat unit 12 may be sleeved on the ball head 112. The driving unit may be connected to the abutment plate 121, so that the abutment plate 121 is driven to move by the driving unit. This facilitates the processing of the plunger assembly 01.

[0023] The closing assembly 02 may include a base unit 21, a cone mold unit 22, and an elastic unit 23. The base unit 21 may be configured to be hollow so that the plunger assembly 01 may engage with the hollow cavity of the base unit 21, and is used to fix the relative position of the base unit 21 and the plunger assembly 01. This prevents the plunger assembly 01 from moving during the processing of the plunger assembly 01, resulting in incomplete closing of the closing ring 123, thereby affecting the processing quality. The cone mold unit 22 may include a third ring 221 and a fourth ring 222. One end of the third ring 221 may be fixedly connected to one end of the fourth ring 222. The inner diameter of the third ring 221 near one end of the fourth ring 222 may be the same as the inner diameter of the fourth ring 222, so that the connection between the third ring 221 and the fourth ring 222 can be smoothly connected. The inner diameter of the end of the third ring 221 away from the fourth ring 222 can be larger than the inner diameter of the fourth ring 222, so that the closing ring 123 can be closed by gradually reducing the inner diameter of the third ring 221 during the pressing process of the closing ring 123. The fourth ring 222 can play a shaping role on the closing ring 123, thereby increasing the fit between the closing ring 123 and the ball head 112. One end of the elastic unit 23 is detachably connected to the bottom of the hollow cavity of the base unit 21, and the other end can extend toward the opening direction of the hollow cavity of the base unit 21, so that during the closing process of the closing ring 123, the elastic unit 23 can provide the ball head 112 with a force close to the abutment plate 121 through the plunger rod 111 to prevent the ball head 112 from falling off from the seat unit 12 during the closing process. The end of the base unit 21 away from the cavity opening is detachably connected to the workbench. In other embodiments, the cone mold unit 22 may further include a fifth ring 223 , and the fifth ring 223 may provide a certain escape space for the seat unit 12 during the pressing process of the closing ring 123 .

[0024] The plunger assembly processing system may include a first closing state and a second closing state. Figure 3 As shown, the first closing state may include the outer peripheral wall of the third ring 221 and / or the outer peripheral wall of the fourth ring 222 abutting against the inner peripheral wall of the base unit 21, the base unit 21 restricts the cone mold unit 22 from moving toward the elastic unit 23, and one end of the plunger rod 111 may abut against one end of the elastic unit 23, so that the elastic unit 23 can provide elastic force to the plunger rod 111, ensuring that the end of the plunger rod 111 away from the elastic unit 23 can abut against the hemispherical seat 122. The hemispherical seat 122 can be sleeved on the outer peripheral side of the ball head 112, and the end of the closing ring 123 away from the hemispherical seat 122 can abut against the inner peripheral wall of the third ring 221, so that when the closing ring 123 is pressed down, the inner diameter of the third ring 221 is gradually reduced so that the closing ring 123 gradually closes in the direction close to the ball head 112, thereby achieving the purpose of closing the closing ring 123. The second closing state may include the closing ring 123 closing along the connection between the closing ring 123 and the ball head 112, the minimum inner diameter of the closing ring 123 after closing is smaller than the diameter of the ball head 112, and the outer peripheral wall of the hemispherical seat 122 or the outer peripheral wall of the closing ring 123 may abut against the inner peripheral wall of the fourth ring 222. The third ring 221 of the cone die unit 22 of the closing assembly 02 abuts against the end of the closing ring 123 away from the hemispherical seat 122, so that when the closing assembly 02 closes the closing ring 123, the end of the closing ring 123 away from the hemispherical seat 122 first bears the closing pressure, and at this time, the force arm of the closing ring 123 is longer, so that the closing pressure required by the closing ring 123 is reduced, which is more labor-saving. At the same time, the force and deformation of the closing ring 123 from one end to the other are more uniform, thereby achieving a one-time closing of the closing ring 123 and avoiding uneven force at various positions of the closing ring 123 during the closing process, which requires secondary shaping, thereby improving the processing efficiency of the closing ring 123.

[0025] In this embodiment, the outer diameter of the closing ring 123 can gradually increase from one end of the closing ring 123 close to the hemispherical seat 122 to the other end, ensuring that the end of the closing ring 123 away from the hemispherical seat 122 can hold the ball head 112 during the extrusion deformation process, thereby enhancing the connection strength between the closing ring 123 and the ball head 112.

[0026] In this embodiment, 16°≤A≤20°. Figure 2As shown, A is the angle between the outer wall of the closing ring 123 and the central axis of the hemispherical seat 122 perpendicular to the abutment plate 121. If the angle is too small, the deformation stroke of the closing ring 123 will be too small, resulting in the inability to tighten the closing ring 123, affecting the use of the plunger assembly 01. If the angle is too large, the angle of the tightening force of the closing ring 123 along the contraction direction will be too large, so that the component force of the tightening force along the contraction direction is small, which will cause the tightening force required by the closing ring 123 to be large, causing the closing ring 123 to be easily damaged due to excessive pressure. Therefore, by limiting the angle between the outer wall of the closing ring 123 and the central axis of the hemispherical seat 122 perpendicular to the abutment plate 121, the processing process of the plunger assembly 01 can be ensured to be smooth, thereby improving the processing quality of the plunger assembly 01.

[0027] In this embodiment, L1>L2. L1 is the distance between the center of the hemispherical seat 122 and the end surface of the closing ring 123 away from the hemispherical seat 122, and L2 is the distance between the two ends of the closing ring 123. This ensures that when the closing ring 123 is closed, a portion of space can be reserved between the ball head 112 and the hemispherical seat 122 to prevent the ball head 112 from being completely tightened, and ensures that the closing ring 123 can tighten the ball head 112 while ensuring that the plunger unit 11 can rotate flexibly in the hemispherical seat 122.

[0028] In this embodiment, 0.05 mm ≤ B, where B is the difference between the inner diameter of the fourth ring 222 and the outer diameter of the hemispherical seat 122. By reserving a gap between the fourth ring 222 and the hemispherical seat 122, it is prevented that the friction between the hemispherical seat 122 and the inner circumferential wall of the fourth ring 222 is too large during the pressing process, thereby preventing the hemispherical seat 122 from being worn.

[0029] In this embodiment, 11°≤C≤A. Figure 4 As shown, C is the angle between the inner circumferential wall of the third ring 221 and the central axis of the cone die unit 22. If the angle is too small, it will be difficult for the closing ring 123 to tighten the ball head 112 to the set position when the third ring 221 abuts against the end of the closing ring 123 away from the hemispherical seat 122, affecting the use of the plunger assembly 01. If the angle is too large, the angle of the contraction force (i.e., the supporting force) provided by the inner circumferential wall of the third ring 221 to the closing ring 123 along the contraction direction is too large, so that the component of the tightening force along the contraction direction is small, so the tightening force required by the closing ring 123 is large, which can make the friction between the closing ring 123 and the cone die unit 22 too large, so that the third ring 221 is easily damaged. Therefore, by limiting the angle between the inner circumferential wall of the third ring 221 and the central axis of the cone die unit 22, the processing process of the plunger assembly 01 can be ensured to be smooth and the processing quality of the plunger assembly 01 can be improved.

[0030] In this embodiment, the base unit 21 may include a base body 211, a first ring 212, and a second ring 213. The first ring 212, the second ring 213, and the base body 211 may be fixedly connected in sequence. The inner diameter of the first ring 212 may gradually decrease in the direction close to the second ring 213, thereby limiting the cone mold unit 22 and preventing the cone mold unit 22 and the base unit 21 from moving relative to each other. The base body 211 is detachably connected to one end of the elastic unit 23. The first closing state may also include the inner circumferential wall of the second ring 213 abutting against the outer circumferential wall of the plunger rod 111 close to the elastic unit 23, so that the second ring 213 can limit the plunger rod 111 to prevent the plunger rod 111 from moving radially or tilting.

[0031] This embodiment discloses a method for processing a plunger assembly 01. The method for processing the plunger assembly 01 can use a plunger assembly processing system of any of the above embodiments, such as Figure 6 As shown, the plunger assembly 01 processing method may include steps S10 to S30, and each step is described in detail as follows: In step S10, based on the closing requirements of the plunger assembly 01, the plunger assembly processing system can enter the first closing state. The first closing state can include the outer peripheral wall of the third ring 221 and / or the outer peripheral wall of the fourth ring 222 abutting against the inner peripheral wall of the base unit 21, and the base unit 21 can limit the cone mold unit 22 from moving in the direction close to the elastic unit 23. One end of the plunger rod 111 can abut against one end of the elastic unit 23, so that during the pressing process of the cone mold unit 22, the elastic unit 23 can provide a larger supporting force to the plunger rod 111, so that the ball head 112 can abut against the end of the hemispherical seat 122 away from the plunger rod 111, preventing the ball head 112 from falling off from the hemispherical seat 122 during the processing. The hemispherical seat 122 can be sleeved on the outer peripheral side of the ball head 112, and the end of the closing ring 123 away from the hemispherical seat 122 can abut against the inner peripheral wall of the third ring 221, so that the force point area of ​​the closing ring 123 can tend to be away from the end of the hemispherical seat 122, thereby making the force arm of the closing ring 123 longer when closing, making it easier to close the closing ring 123.

[0032] In step S20, based on the plunger assembly processing system entering the first closing state, the driving unit can drive the seat unit 12 to move to a set position in a direction close to the elastic unit 23. In the process of the seat unit 12 moving close to the elastic body, the cone mold unit 22 can apply a tightening force to the closing ring 123, thereby achieving the closing of the closing ring 123.

[0033] Step S30, based on the seat unit 12 moving to the set position in the direction close to the elastic unit 23, the plunger assembly processing system can be switched to the second closing state. The second closing state can include the closing ring 123 closing along the connection between the closing ring 123 and the ball head 112, and the minimum inner diameter of the closing ring 123 after closing can be smaller than the diameter of the ball head 112, so that the ball head 112 cannot fall off the hemispherical seat 122. The outer peripheral wall of the hemispherical seat 122 or the outer peripheral wall of the closing ring 123 can abut against the inner peripheral wall of the fourth ring 222, thereby playing a certain shaping role on the hemispherical seat 122 and the seat unit 12, so that the shape of the seat unit 12 can be more in line with the ball head 112.

[0034] In this embodiment, step S10 may include step S11 to step S13, and each step is described in detail as follows: In step S11, based on the opening requirements of the plunger assembly 01, lubricating oil can be applied to the outer peripheral side of the ball head 112, the inner peripheral wall of the hemispherical seat 122, and the inner peripheral wall of the cone mold unit 22, so that the ball head 112 can flexibly rotate within the inner peripheral wall of the hemispherical seat 122 and reduce the friction between the closing ring 123 and the inner peripheral wall of the cone mold unit 22, thereby reducing the wear of the closing ring 123 during the pressing process of the seat unit 12. The hemispherical seat 122 can be sleeved on the outer peripheral side of the ball head 112 to facilitate the subsequent tightening of the ball head 112 by the closing ring 123.

[0035] In step S12, based on the hemispherical seat 122 being sleeved on the outer peripheral side of the ball head 112, the cone mold unit 22 can be placed in the base unit 21. The outer peripheral wall of the third ring 221 and / or the outer peripheral wall of the fourth ring 222 of the cone mold unit 22 can abut against the inner peripheral wall of the base unit 21, and the base unit 21 can limit the cone mold unit 22 from moving in the direction close to the elastic unit 23, so as to avoid affecting the closing effect of the cone mold unit 22 on the closing ring 123.

[0036] In step S13, based on the placement of the cone die unit 22 in the base unit 21, one end of the plunger rod 111 can be passed through the cone die unit 22 until it abuts against one end of the elastic unit 23, so that during the pressing process of the cone die unit 22, the elastic unit 23 can provide a large supporting force to the plunger rod 111, so that the ball head 112 can abut against the end of the hemispherical seat 122 away from the plunger rod 111, preventing the ball head 112 from falling off from the hemispherical seat 122 during processing. The end of the closing ring 123 away from the hemispherical seat 122 can abut against the inner circumferential wall of the third ring 221, so that the force point area of ​​the closing ring 123 can tend to be away from one end of the hemispherical seat 122, so that the force arm of the closing ring 123 when closing is longer, making it easier to close the closing ring 123.

[0037] In this embodiment, the time consumed in the process of moving the seat unit 12 toward the direction close to the elastic unit 23 to the set position in step S20 can be greater than or equal to the set threshold. By slowly moving the seat unit 12 toward the direction close to the elastic unit 23 to the set position, it is ensured that the closing ring 123 is fully deformed when closed, thereby ensuring the processing quality of the closing ring 123.

[0038] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A plunger assembly processing system, characterized in that: The plunger assembly processing system comprises: A machine body assembly, the machine body assembly comprising a driving unit and a workbench; the driving unit and the workbench are detachably connected; A plunger assembly, the plunger assembly comprises a plunger unit and a seat unit; the plunger unit comprises a plunger rod and a ball head; one end of the plunger rod is fixedly connected to the ball head; the seat unit comprises an abutment plate, a hemispherical seat, and a closing ring; the abutment plate, the hemispherical seat, and the closing ring are fixedly connected in sequence; the minimum inner diameter of the closing ring is greater than the diameter of the ball head; the driving unit is drivingly connected to the abutment plate; A closing component, the closing component comprises a base unit, a cone mold unit, and an elastic unit; the base unit is configured to be hollow; the cone mold unit comprises a third ring and a fourth ring; one end of the third ring is fixedly connected to one end of the fourth ring; the inner diameter of the end of the third ring close to the fourth ring is the same as the inner diameter of the fourth ring; the inner diameter of the end of the third ring away from the fourth ring is larger than the inner diameter of the fourth ring; one end of the elastic unit is detachably connected to the bottom of the hollow cavity of the base unit, and the other end extends toward the opening direction of the hollow cavity of the base unit; the end of the base unit away from the opening of the cavity is detachably connected to the workbench; The plunger assembly processing system also includes a first closing state and a second closing state; the first closing state includes the outer peripheral wall of the third ring and / or the outer peripheral wall of the fourth ring abutting against the inner peripheral wall of the base unit, the base unit restricts the cone mold unit from moving toward the elastic unit, one end of the plunger rod abuts against one end of the elastic unit, the hemispherical seat is sleeved on the outer peripheral side of the ball head, and the end of the closing ring away from the hemispherical seat abuts against the inner peripheral wall of the third ring; the second closing state includes the closing ring closing along the connection between the closing ring and the ball head, the minimum inner diameter of the closing ring after closing is smaller than the diameter of the ball head, and the outer peripheral wall of the hemispherical seat or the outer peripheral wall of the closing ring abuts against the inner peripheral wall of the fourth ring; L1>L2; wherein, L1 is the distance between the center of the hemispherical seat and the end surface of the closing ring away from the hemispherical seat, and L2 is the distance between the two ends of the closing ring.

2. A plunger assembly processing system according to claim 1, characterized in that: The outer diameter of the closing ring gradually increases from one end of the closing ring close to the hemispherical seat toward the other end.

3. A plunger assembly processing system according to claim 2, characterized in that: 16°≤A≤20°; wherein A is the angle between the outer peripheral wall of the closing ring and the central axis of the hemispherical seat perpendicular to the abutment plate.

4. A plunger assembly processing system according to claim 1, characterized in that: 0.05mm≤B; wherein B is the difference between the inner diameter of the fourth ring and the outer diameter of the hemispherical seat.

5. A plunger assembly processing system according to claim 3, characterized in that: 11°≤C≤A; wherein C is the angle between the inner circumferential wall of the third ring and the central axis of the cone mold unit.

6. A plunger assembly processing system according to claim 1, characterized in that: The base unit includes a seat body, a first ring, and a second ring; the first ring, the second ring, and the seat body are fixedly connected in sequence; the inner diameter of the first ring gradually decreases in the direction approaching the second ring; the seat body is detachably connected to one end of the elastic unit; the first closing state also includes the inner circumferential wall of the second ring abutting against the outer circumferential wall of the plunger rod near one end of the elastic unit.

7. A plunger assembly processing method, the plunger assembly processing method using a plunger assembly processing system according to any one of claims 1 to 6, characterized in that: The plunger assembly processing method comprises: Step S10, based on the closing requirement of the plunger assembly, the plunger assembly processing system enters a first closing state; wherein the first closing state includes the outer peripheral wall of the third ring and / or the outer peripheral wall of the fourth ring abutting against the inner peripheral wall of the base unit, the base unit restricts the cone mold unit from moving in a direction close to the elastic unit, one end of the plunger rod abuts against one end of the elastic unit, the hemispherical seat is sleeved on the outer peripheral side of the ball head, and the end of the closing ring away from the hemispherical seat abuts against the inner peripheral wall of the third ring; Step S20, based on the plunger assembly processing system entering the first closing state, the driving unit drives the seat unit to move to a set position in a direction close to the elastic unit; Step S30, based on the seat unit moving toward the direction close to the elastic unit to the set position, the plunger assembly processing system switches to the second closing state; wherein, the second closing state includes the closing ring closing along the connection between the closing ring and the ball head, the minimum inner diameter of the closing ring after closing is smaller than the diameter of the ball head, and the outer peripheral wall of the hemispherical seat or the outer peripheral wall of the closing ring abuts against the inner peripheral wall of the fourth ring.

8. A plunger assembly processing method according to claim 7, characterized in that: The step S10 comprises: Step S11, based on the closing requirements of the plunger assembly, lubricating oil is applied to the outer peripheral side of the ball head, the inner peripheral wall of the hemispherical seat and the inner peripheral wall of the cone mold unit, and the hemispherical seat is sleeved on the outer peripheral side of the ball head; Step S12, based on the hemispherical seat being sleeved on the outer peripheral side of the ball head, the cone mold unit is placed in the base unit; wherein the third ring outer peripheral wall and / or the fourth ring outer peripheral wall of the cone mold unit abut against the inner peripheral wall of the base unit, and the base unit restricts the cone mold unit from moving in a direction close to the elastic unit; Step S13, based on the cone mold unit being placed in the base unit, one end of the plunger rod is passed through the cone mold unit until it abuts against one end of the elastic unit, and the end of the closing ring away from the hemispherical seat abuts against the inner circumferential wall of the third ring.

9. A plunger assembly processing method according to claim 7, characterized in that: The time consumed by the process of the seat unit moving toward the direction close to the elastic unit to the set position in the step S20 is greater than or equal to a set threshold.

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