A plunger assembly processing system and method

Abstract

The present invention relates to the technical field of plunger pumps, and in particular, to a plunger assembly processing system and method. The plunger pump processing system includes: a body assembly, the body assembly includes a driving unit and a workbench; a plunger assembly, the plunger assembly includes a plunger unit and a seat unit; the plunger unit includes a plunger rod and a ball head; the seat unit includes a contact plate, a hemispherical seat, and a closing ring; a closing assembly, the closing assembly includes a base unit, a tapered die unit, and an elastic unit; the base unit is arranged in a hollow shape; the tapered die unit includes a third ring and a fourth ring; the plunger assembly processing system further includes a first closing state and a second closing state; thus, the problem of difficult processing of the closing ring during the processing of the plunger assembly is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plunger pumps, and more specifically, to a plunger assembly processing system and method. Background Art

[0002] A plunger pump is an important component in the working process of an engine, mainly composed of a plunger pump cylinder block and a plunger assembly. Under the action of high-pressure oil, the plunger assembly reciprocates in the plunger pump cylinder block to achieve the transportation of hydraulic oil. The processing accuracy and quality of the plunger assembly directly affect the performance and service 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, not only is it necessary to ensure that the ball head fits into the hollow spherical cavity after closing with the seat unit, but also it is necessary to ensure that the ball head can rotate. Therefore, during the processing, it is usually necessary to perform secondary shaping on the closing ring, which greatly reduces the processing efficiency. Summary of the Invention

[0004] To solve the problem of difficult processing of the closing ring during the processing of the plunger assembly, the present invention provides a plunger assembly processing system and method.

[0005] In a first aspect, the present invention provides a plunger assembly processing system, which includes:

[0006] A body assembly, the body assembly includes a driving unit and a workbench; the driving unit is detachably connected to the workbench;

[0007] A plunger assembly, the plunger assembly includes a plunger unit and a seat unit; the plunger unit includes a plunger rod and a ball head; one end of the plunger rod is fixedly connected to the ball head; the seat unit includes a contact plate, a hemispherical seat, and a closing ring; the contact 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 contact plate;

[0008] A closing assembly, the closing assembly includes a base unit, a tapered die unit, and an elastic unit; the base unit is provided in a hollow shape; the tapered die unit includes 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 third ring near one end of the fourth ring is the same as the inner diameter of the fourth ring; the inner diameter of the third ring far from one end of the fourth ring is greater 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 towards the opening direction of the hollow cavity of the base unit; the end of the base unit far from the opening of its hollow cavity is detachably connected to the workbench;

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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;

[0017] 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;

[0018] 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.

[0019] In some embodiments, step S10 includes:

[0020] 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;

[0021] 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;

[0022] 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.

[0023] 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.

[0024] 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:

[0025] 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. One 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 converging along the connection between the closing ring and the ball head. By the third ring of the taper die unit of the closing assembly abutting against one end of the closing ring away from the hemispherical seat, when the closing assembly closes the closing ring, the end of the closing ring away from the hemispherical seat bears the closing pressure first. At this time, the force arm of the closing ring is longer, so that the required closing pressure of the closing ring is reduced and it 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, so as to realize the one-time closing of the closing ring without secondary shaping, and the processing efficiency of the closing ring is improved. Description of the Drawings

[0026] Figure 1 Fig. shows a schematic diagram of the plunger assembly processing system of the first embodiment;

[0027] Figure 2 Fig. shows a partial schematic diagram of the plunger assembly processing system of the first embodiment;

[0028] Figure 3 Fig. shows a schematic diagram of the plunger assembly processing system of the second embodiment;

[0029] Figure 4 Fig. shows a partial schematic diagram of the plunger assembly processing system of the second embodiment;

[0030] Figure 5 Fig. shows a partial schematic diagram of the plunger assembly processing system of the third embodiment;

[0031] Figure 6 Fig. shows a flowchart of the plunger assembly processing method of an embodiment.

[0032] Reference Numerals: 01 plunger assembly; 11 plunger unit; 111 plunger rod; 112 ball head; 12 seat unit; 121 abutting plate; 122 hemispherical seat; 123 closing ring; 02 closing assembly; 21 base unit; 211 seat body; 212 first ring; 213 second ring; 22 taper die unit; 221 third ring; 222 fourth ring; 223 fifth ring; 23 elastic unit. Detailed Embodiments

[0033] Now, the content of the present disclosure will be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus implement the content of the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0034] As used herein, the term "comprising" and its variants are to be construed as open-ended terms meaning "including but not limited to". The term "based on" is to be construed as "at least partially based on". The terms "an embodiment" and "one embodiment" are to be construed as "at least one embodiment". The term "another embodiment" is to be construed as "at least one other embodiment". The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Also, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances. In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to 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 device, element or component. Unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] During the machining process of the plunger assembly 01, it is necessary to crimp the crimping ring 123 of the seat unit 12 at the connection between one end of the plunger rod 111 of the plunger unit 11 and the ball head 112. During the crimping process of the crimping ring 123, the crimping is usually carried out from one side close to the hemispherical seat 122 to the other side. However, this crimping method not only requires a large crimping force, but also often requires secondary shaping in order to ensure the fit between the crimping ring 123 and the ball head 112, resulting in a low crimping efficiency of the crimping ring 123 and an increase in the machining difficulty. This embodiment provides a machining system for the plunger assembly 01, as Figure 1 shown, the machining system for the plunger assembly 01 may include a body assembly, a plunger assembly 01, and a crimping assembly 02.

[0036] The body assembly may include a drive unit and a workbench. The drive unit can drive the plunger assembly processing system to process the plunger. The workbench can be used to support and fix the entire plunger assembly processing system, and the drive unit is detachably connected to the workbench.

[0037] As Figure 1 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. As Figure 5 shown, the seat unit 12 may include a contact plate 121, a hemispherical seat 122, and a closing ring 123. The contact 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 can be sleeved on the ball head 112. The drive unit may be drivingly connected to the contact plate 121, so as to drive the contact plate 121 to move through the drive unit. Facilitate the processing of the plunger assembly 01.

[0038] The closing assembly 02 may include a base unit 21, a tapered die unit 22, and an elastic unit 23. The base unit 21 may be arranged in a hollow shape, so that the plunger assembly 01 can be engaged with the hollow cavity of the base unit 21 to fix the relative position of the base unit 21 and the plunger assembly 01. Prevent 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 tapered die 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 third ring 221 far from one end of the fourth ring 222 may be greater than the inner diameter of the fourth ring 222, so that the inner diameter of the third ring 221 can gradually decrease during the downward pressing of the closing ring 123 to achieve the closing of the closing ring 123. The fourth ring 222 can play a shaping role on the closing ring 123, thereby increasing the fit degree 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 of the hollow cavity of the base unit 21. Thus, during the closing process of the closing ring 123, the elastic unit 23 can provide a force for the ball head 112 to approach the contact plate 121 through the plunger rod 111, preventing the ball head 112 from falling off the seat unit 12 during the closing process. One end of the base unit 21 far from the opening of its hollow cavity is detachably connected to the workbench. In some other embodiments, the tapered die unit 22 may further include a fifth ring 223, and the fifth ring 223 can provide a certain avoidance space for the seat unit 12 during the downward pressing of the closing ring 123.

[0039] The plunger assembly processing system may include a first necking state and a second necking state. As Figure 3 shown, the first necking 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 movement of the tapered die unit 22 in the direction close to the elastic unit 23. 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 an 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 may be sleeved on the outer peripheral side of the ball head 112. One end of the necking ring 123 away from the hemispherical seat 122 may abut against the inner peripheral wall of the third ring 221. Thus, when the necking ring 123 is pressed down, the inner diameter of the third ring 221 gradually decreases, causing the necking ring 123 to gradually converge towards the ball head 112, thereby achieving the purpose of necking the necking ring 123. The second necking state may include the necking ring 123 converging along the connection between the necking ring 123 and the ball head 112. The minimum inner diameter of the converged necking ring 123 is smaller than the diameter of the ball head 112. The outer peripheral wall of the hemispherical seat 122 or the outer peripheral wall of the necking ring 123 may abut against the inner peripheral wall of the fourth ring 222. By the third ring 221 of the tapered die unit 22 of the necking assembly 02 abutting against one end of the necking ring 123 away from the hemispherical seat 122, when the necking assembly 02 neckes the necking ring 123, the end of the necking ring 123 away from the hemispherical seat 122 bears the necking pressure first. At this time, the force arm of the necking ring 123 is longer, reducing the required necking pressure of the necking ring 123 and making it more labor-saving. At the same time, the force and deformation of the necking ring 123 from one end to the other are more uniform, thus realizing the one-time necking of the necking ring 123, avoiding uneven stress at each position of the necking ring 123 during the necking process and the need for secondary shaping, and improving the processing efficiency of the necking ring 123.

[0040] In this embodiment, the outer diameter of the necking ring 123 may gradually increase from the end close to the hemispherical seat 122 towards the other end, ensuring that the end of the necking ring 123 away from the hemispherical seat 122 can hold the ball head 112 during the extrusion deformation process and enhancing the connection strength between the necking ring 123 and the ball head 112.

[0041] In this embodiment, 16° ≤ A ≤ 20°. Wherein, as Figure 2As shown in the figure, A is the angle between the outer peripheral wall of the closing ring 123 and the central axis of the hemispherical seat 122 perpendicular to the abutting plate 121. If the angle is too small, the deformation stroke of the closing ring 123 will be small, resulting in the inability of the closing ring 123 to be tightened, 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 will be small. Therefore, the tightening force required for the closing ring 123 will be large, resulting in the easy damage of the closing ring 123 due to excessive pressure. Therefore, by limiting the angle between the outer peripheral wall of the closing ring 123 and the central axis of the hemispherical seat 122 perpendicular to the abutting plate 121, 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.

[0042] In this embodiment, L1 > L2. Wherein, L1 is the distance between the center of the hemispherical seat 122 and the end face of the closing ring 123 far from the hemispherical seat 122, and L2 is the distance between the two ends of the closing ring 123. Thus, when the closing ring 123 is closed, a part 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 it is ensured that the plunger unit 11 can rotate flexibly in the hemispherical seat 122 while the closing ring 123 tightens the ball head 112.

[0043] In this embodiment, 0.05mm ≤ B. Wherein, 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, the excessive friction between the inner peripheral wall of the hemispherical seat 122 and the fourth ring 222 during the downward pressing process can be prevented, so as to prevent the wear of the hemispherical seat 122.

[0044] In this embodiment, 11° ≤ C ≤ A. As Figure 4 shown, C is the angle between the inner peripheral wall of the third ring 221 and the central axis of the tapered 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 far 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 peripheral wall of the third ring 221 to 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 will be small. Therefore, the tightening force required for the closing ring 123 will be large, and further, the friction between the closing ring 123 and the tapered die unit 22 will be too large, resulting in the easy damage of the third ring 221. Therefore, by limiting the angle between the inner peripheral wall of the third ring 221 and the central axis of the tapered 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.

[0045] 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, so as to limit the tapered die unit 22 and prevent relative movement between the tapered die unit 22 and the base unit 21. One end of the base body 211 is detachably connected to one end of the elastic unit 23. The first closed state may further include the inner peripheral wall of the second ring 213 abutting against the outer peripheral wall of the plunger rod 111 near one end of the elastic unit 23, so that the second ring 213 can limit the plunger rod 111 to move radially or skew.

[0046] This embodiment discloses a processing method for a plunger assembly 01. The processing method for the plunger assembly 01 can use the plunger assembly processing system of any of the above embodiments, such as Figure 6 As shown, the processing method for the plunger assembly 01 may include steps S10 to S30, and the details of each step are described as follows:

[0047] In step S10, based on the closing requirement of the plunger assembly 01, the plunger assembly processing system can enter the first closed state. Among them, the first closed 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, and the base unit 21 can limit the tapered die unit 22 from moving in the direction close to the elastic unit 23. One end of the plunger rod 111 may abut against one end of the elastic unit 23, so that during the downward pressing of the tapered 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 one 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 may be sleeved on the outer peripheral side of the ball head 112, and one end of the closing ring 123 away from the hemispherical seat 122 may abut against the inner peripheral wall of the third ring 221, so that the force application point area of the closing ring 123 can tend to be one end away from the hemispherical seat 122, so that the force arm during the closing of the closing ring 123 is longer, making it easier for the closing ring 123 to close.

[0048] In step S20, based on the plunger assembly processing system entering the first closed state, the driving unit can drive the seat unit 12 to move towards the elastic unit 23 to a set position. So that during the movement of the seat unit 12 towards the elastic body, the closing ring 123 can be tightened by the tapered die unit 22, thereby realizing the closing of the closing ring 123.

[0049] Step S30, based on the seat unit 12 moving towards the elastic unit 23 to a set position, the plunger assembly processing system can switch to the second necking state. The second necking state may include the necking ring 123 converging along the connection between the necking ring 123 and the ball head 112. The minimum inner diameter of the converged necking ring 123 may be smaller than the diameter of the ball head 112, so that the ball head 112 cannot fall off from the hemispherical seat 122. The outer peripheral wall of the hemispherical seat 122 or the outer peripheral wall of the necking ring 123 may 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 fit the ball head 112 better.

[0050] In this embodiment, step S10 may include steps S11 to S13, and the details of each step are described as follows:

[0051] In step S11, based on the opening requirement 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 die unit 22, so that the ball head 112 can rotate flexibly within the inner peripheral wall of the hemispherical seat 122 and reduce the friction force at the contact between the necking ring 123 and the inner peripheral wall of the cone die unit 22, reducing the wear of the necking ring 123 during the downward pressing 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 necking ring 123.

[0052] In step S12, based on the hemispherical seat 122 being sleeved on the outer peripheral side of the ball head 112, the cone die unit 22 can be placed in the base unit 21. Wherein, the outer peripheral wall of the third ring 221 and / or the outer peripheral wall of the fourth ring 222 of the cone die unit 22 may abut against the inner peripheral wall of the base unit 21, and the base unit 21 can restrict the cone die unit 22 from moving towards the elastic unit 23, avoiding affecting the necking effect of the cone die unit 22 on the necking ring 123.

[0053] In step S13, based on the cone die unit 22 being placed in the base unit 21, one end of the plunger rod 111 can pass through the cone die unit 22 to abut against one end of the elastic unit 23, so that during the downward pressing 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 far from the plunger rod 111, preventing the ball head 112 from falling off from the hemispherical seat 122 during the processing. The end of the necking ring 123 far from the hemispherical seat 122 can abut against the inner peripheral wall of the third ring 221, so that the force application point area of the necking ring 123 can tend to be at the end far from the hemispherical seat 122, so that the force arm during the necking of the necking ring 123 is longer, making it easier for the necking ring 123 to neck.

[0054] In this embodiment, the time consumed in the process of moving the seat unit 12 in step S20 towards the elastic unit 23 to a set position can be greater than or equal to a set threshold. By slowly moving the seat unit 12 towards the elastic unit 23 to the set position, it is ensured that the closing ring 123 is sufficiently deformed when it is closed, thus ensuring the processing quality of the closing ring 123.

[0055] Those of ordinary skill in the art can understand that the above embodiments are specific cases for implementing the present disclosure. In practical applications, various changes can be made to them in form and details 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; 0.05mm≤B; wherein B is the difference between the inner diameter of the fourth ring and the outer diameter of the hemispherical seat; 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; 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; 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.

2. 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.

3. A plunger assembly processing method, the plunger assembly processing method using a plunger assembly processing system according to any one of claims 1 to 2, 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.

4. A plunger assembly processing method according to claim 3, 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.

5. A plunger assembly processing method according to claim 4, 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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