Tool for lubricating annular workpiece
By setting an independent lubricant conveying path and driving portion in the tooling, the problem of uneven lubricant distribution is solved, and uniform lubrication and efficient lubrication effects of the annular workpiece are achieved.
Patent Information
- Application Number
- CN202422638148.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When the existing tooling is lubricated for the inner and outer ring surfaces of the annular workpiece shaft seal, the lubricant distribution is uneven, resulting in poor lubrication effect.
A tool is designed, including a driving part, a head part and a body, with a built-in independent first lubricant conveying path and a second lubricant conveying path, respectively, and the head part is moved between the push-out and withdrawal positions through the driving part to ensure uniform distribution of the lubricant.
The inner and outer ring surfaces of the annular workpiece are uniformly lubricated, which improves the lubrication effect and efficiency, and is suitable for shaft seals of various structures and sizes.
Smart Images
Figure CN223165370U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a tooling, specifically to a tooling for lubricating an annular workpiece. Background Art
[0002] A shaft seal is used to prevent high-pressure liquid in a compressor or other fluid equipment from leaking outwards, or to prevent external air from entering the equipment. Before the shaft seal is installed on the equipment, a lubricant is applied to the shaft seal through a tooling. The function of lubrication is to reduce the friction between the shaft seal and the shaft, prevent wear, help the shaft seal maintain its elasticity, and extend the sealing effect.
[0003] The shaft seal is an annular workpiece, which has an inner ring surface and an outer ring surface, both of which need to be lubricated. The shaft seal is sleeved on the tooling, and a lubricant delivery channel is arranged in the tooling to supply lubricant to the inner ring surface and / or the outer ring surface. The lubrication effect of the shaft seal depends on the complete and uniform distribution of the lubricant on the surface to be lubricated, so there are certain requirements for the grease output of the tooling. Summary of the Utility Model
[0004] One aspect of the present application is to provide a tooling for lubricating an annular workpiece, and the lubricated shaft seal has a better lubricant distribution.
[0005] The tooling includes:
[0006] A driving part and a head,
[0007] A body disposed between the driving part and the head, the driving part drives the head to move between a pushing position and a retracting position via the body, and at the pushing position, the workpiece is sleeved on the head;
[0008] Wherein a first lubricant delivery path for the first surface to be lubricated of the workpiece and a second lubricant delivery path for the second surface to be lubricated are arranged in the body, the first lubricant delivery path has a first inlet and a plurality of first outlets, and the lubricant entering the first lubricant delivery path through the first inlet is applied to the first surface to be lubricated through the plurality of first outlets, the second lubricant delivery path has a second inlet and a plurality of second outlets, and the lubricant entering the second lubricant delivery path through the second inlet is applied to the second surface to be lubricated through the plurality of second outlets.
[0009] In an embodiment of the tooling, the plurality of first outlets are arranged in a ring distributed along the first surface to be lubricated; and / or the plurality of second outlets are arranged in a ring distributed along the second surface to be lubricated.
[0010] In an embodiment of the tooling, the body includes a stationary part and a movable part movable relative to the stationary part. The movable part is connected between the driving part and the head, and a part of it passes through the stationary part; one of the first lubricant delivery path and the second lubricant delivery path is arranged in the stationary part, and the other is arranged in the movable part.
[0011] In an embodiment of the tooling, the first inlet and the second inlet are each equipped with a flow valve to control the amount of lubricant supplied to the first lubricant delivery path and the second lubricant delivery path.
[0012] In an embodiment of the tooling, the first surface to be lubricated is the inner ring surface of the workpiece; the inner ring surface is sleeved on the head in a form opposite to the circumferential surface of the head. The head includes a first part, a second part, and a first annular space separating the first part from the second part. The axial spacing length of the first annular space is set to force the lubricant to be squeezed in the first annular space and diffusely applied to the inner ring surface.
[0013] In an embodiment of the tooling, the first lubricant delivery path is arranged in the movable part; the first part is centrally connected to the second part via a thread; the second part is integrated at the top of the movable part, and the plurality of first outlets are arranged axially across the movable part and the second part.
[0014] In an embodiment of the tooling, the second surface to be lubricated is the outer ring surface of the workpiece; the tooling further includes a limit ring and a cover fixed to the stationary part. The stationary part has a cavity inside it. The limit ring is located in the cavity. The cover has a first step relative to the first end surface of the limit ring. The first step is configured to be able to receive the limit ring and stop the limit ring in the direction in which the head moves towards the ejection position; the limit ring has a flange, and the flange is configured to abut against the second step of the cavity to stop the limit ring in the direction in which the head moves towards the retraction position.
[0015] In an embodiment of the tooling, when the limit ring abuts against the second step, there is a second annular space between the limit ring and the cover; the second lubricant delivery path is arranged in the stationary part, and the plurality of second outlets are arranged axially on the second step; the lubricant is squeezed in the second annular space and diffusely applied to the outer ring surface.
[0016] In an embodiment of the tooling, the limiting ring further has a second end face opposite to the first end face, the movable part has a surface of the movable part facing the second end face, and during the movement of the head towards the pushing position, after the movable part moves until the surface of the movable part contacts the second end face, the limiting ring moves together with the movable part.
[0017] In an embodiment of the tooling, the tooling further includes a seat for fixing the driving part, and one of the seat and the movable part is provided with a limiting post to prevent the movable part from continuing to move in the direction of the head moving towards the retracting position.
[0018] In an embodiment of the tooling, the driving part is a cylinder.
[0019] In this application, multiple lubricant delivery paths are arranged in the tooling to separately lubricate multiple surfaces to be lubricated of the workpiece. Since the multiple lubricant delivery paths are independent of each other, the lubricant on each lubricant delivery path can be supplied to the target surface of the workpiece without being affected, so as to obtain better lubrication quality on the workpiece.
[0020] This application also uses the driving part to move the head between the pushing position and the retracting position, which facilitates the head to sleeved the workpiece, and the head can move into the tooling for lubrication work.
[0021] In this application, by arranging the outlets of the lubricant delivery paths around the target surface, lubricant is supplied in as many directions as possible, so as to further obtain a good lubricant distribution effect on the target surface to be lubricated.
[0022] In this application, by providing an annular space with a small clearance height in the tooling and connecting it between the outlet and the target surface, the lubricant is squeezed in the annular space after flowing out of the outlet and moves towards the target surface. Therefore, the lubricant is forced to be applied to the target surface under the action of the squeezing force, which can improve the lubrication efficiency and effect compared with the non-directional oil outlet method.
[0023] This application also provides limiting elements inside and outside the tooling respectively to control the clearance height of the annular space, the moving amount of the head and the moving amount of the movable part, so as to ensure that the workpiece works at a proper position in the tooling.
[0024] This application can lubricate shaft seals with various structures or sizes.
[0025] Other aspects and features of the present application become apparent from the following detailed description with reference to the accompanying drawings. It should be understood, however, that the drawings are designed solely for the purpose of explanation and not as a limitation of the scope of the present application, as it should be referred to the appended claims. It should also be understood that the drawings are only intended to conceptually illustrate the structures and processes described herein and, unless otherwise indicated, need not be drawn to scale. Description of the Drawings
[0026] Referring to the following detailed description of the specific embodiments in conjunction with the accompanying drawings, the present application will be more fully understood. The same reference numerals in the drawings always refer to the same elements in the views. Among them:
[0027] Figure 1 It is a schematic diagram of an embodiment of a tooling for lubricating a ring-shaped workpiece related to the present application;
[0028] Figure 2(a)-2(c) It is a schematic diagram of the working state of a tooling for lubricating a ring-shaped workpiece related to the present application. Among them, Fig. 2(a) shows the head being pushed out, Fig. 2(b) shows the workpiece sleeved on the head, and Fig. 2(c) shows the head sleeved with the workpiece being withdrawn;
[0029] Figure 3(a)-3(c) It is a schematic diagram of an embodiment of the first lubricant delivery path related to the present application. Among them, Fig. 3(a) is the structure of an embodiment of the first lubricant delivery path, Fig. 3(a1) is the delivery process of the first lubricant delivery path, Fig. 3(b) is an enlarged schematic diagram of an embodiment of the head, Fig. 3(b1) is the delivery process of the lubricant from the first outlet to the surface to be lubricated, and Fig. 3(c) is a schematic diagram of a partial tooling with the first part of the head removed; and
[0030] Figure 4(a)-4(d) It is a schematic diagram of an embodiment of the second lubricant delivery path related to the present application. Among them, Fig. 4(a) is the structure of an embodiment of the second lubricant delivery path, Fig. 4(a1) is the delivery process of the second lubricant delivery path, Fig. 4(b) is a cross-sectional view of a partial tooling, Fig. 4(c) is a schematic diagram of the limiting ring in one of the stop states in Fig. 4(b); Fig. 4(c1) is the delivery process of the lubricant from the second outlet to the surface to be lubricated, and Fig. 4(d) is a schematic diagram of a partial tooling with the cover removed. Detailed Description of the Specific Embodiments
[0031] To help those skilled in the art to accurately understand the subject matter claimed in the present application, the following detailed description of the specific embodiments of the present application will be given in conjunction with the accompanying drawings.
[0032] Figure 1Schematic diagram of an embodiment of a tooling for lubricating an annular workpiece involved in the present application. The tooling includes a head 10, a driving part 12, and a body 14. In the illustrated embodiment, the head 10 is located above, the driving part 12 is located below, and the body 14 is located at an intermediate position between the head 10 and the driving part 12. The driving part 12 drives the head 10 to move in the vertical direction in the figure via the body 14. For the sake of clear illustration, not all structures of the tooling are shown in the figure, such as the support structure for the body or the driving part, etc.
[0033] Figures 2(a)-(c) are schematic diagrams of the working states of the tooling for lubricating an annular workpiece involved in the present application. The driving part drives the head to move between the pushing-out position and the retracting position. As shown in Figure 2(a), the driving part 12 has pushed out the head. As shown in Figure 2(b), at the pushing-out position, the annular workpiece 20 is sleeved on the pushed-out head 10. As shown in Figure 2(c), the driving part 12 retracts the head 10 into the tooling, and the workpiece 20 enters the tooling along with the head. In the illustrated state, the workpiece 20 can be positioned at a suitable working position to be lubricated in the tooling.
[0034] The workpiece has a plurality of surfaces to be lubricated, including at least a first surface to be lubricated and a second surface to be lubricated. Correspondingly, a first lubricant delivery path for the first surface to be lubricated and a second lubricant delivery path for the second surface to be lubricated are arranged in the body, wherein the first lubricant delivery path is independent of the second lubricant delivery path. The first lubricant delivery path has a first inlet 16 and a plurality of first outlets, and the second lubricant delivery path has a second inlet 18 and a plurality of second outlets. The first inlet 16 is different from the second inlet 18. The lubricant entering the first lubricant delivery path through the first inlet 16 is finally applied to the first lubricated surface through the plurality of first outlets, and the lubricant entering the second lubricant delivery path through the second inlet 18 is finally applied to the second surface to be lubricated through the plurality of second outlets. Since different lubricant delivery paths are applied to the supply of different surfaces to be lubricated, the lubricant application effect and the coating effect can be improved. If the lubricant delivery paths are shared in the body, even if the lubricant is separately delivered to different surfaces to be lubricated at the outlet, there will still be a situation where the lubrication effect of one surface to be lubricated is better than that of the other. For the surface to be lubricated with a relatively poor effect, it is often caused by the unsmooth output of the lubricant and the uneven distribution of the lubricant, because there is a distribution problem in the last section of the shared lubricant delivery path, and the lubricant is always "preferably" distributed to a specific surface to be lubricated, so that other surfaces to be lubricated are inferior to this surface. The above problems can be solved by providing independent lubricant delivery paths. Back to Figure 1, it can be seen that the first inlet 16 and the second inlet 18 are separately arranged. The same applies to the multiple first outlets and the multiple second outlets, but since they are arranged inside the tooling, they cannot be shown in the figure.
[0035] In one embodiment, the body 14 includes a stationary part 22 and a movable part 24 that is movable relative to the stationary part 22. The first lubricant delivery path is arranged in one of the stationary part and the movable part, while the second lubricant delivery path is arranged in the other, so that the two lubricant delivery paths are separated. The movable part 24 is connected between the head 10 and the driving part 12, so that the driving part 12 can drive the movable part 24 to drive the head 10 to move together. In the illustrated embodiment, by comparing FIGS. 2(a)-(c), it can be seen that the stationary part 22 is located above, the movable part 24 is located below, and the movable part 24 approaches (FIGS. 2(a)-(b)) and moves away from (FIG. 2(c)) the stationary part 22. A part of the movable part 24 passes through the stationary part 22, so that the movable part 24 is connected to the head 10, and under the action of the driving part 12, the movable part 24 and the head 10 move together.
[0036] Next, the detailed structures of the first lubricant delivery path and the second lubricant delivery path will be introduced separately.
[0037] FIG. 3(a)-(c) are schematic diagrams of an embodiment of the first lubricant delivery path involved in the present application. The first lubricant delivery path 26 is arranged in the movable part 24. FIG. 3(a) shows the head 10 and the movable part 24. The first inlet 16 is arranged radially on the side of the bottom of the movable part 24. The lubricant is delivered along the first lubricant delivery path 26 from the bottom to the head 10 located at the top of the movable part 24. The first lubricant delivery path 26 includes a plurality of pipes arranged in the vertical direction (which is also the axial direction of the workpiece) and a plurality of pipes in the transverse direction (which is also the radial direction of the workpiece), and these pipes are connected to each other to deliver the lubricant upward level by level. First, the first inlet 16 is delivered to the central first hub station 28 via a transverse pipe (not shown). Four first-stage transverse pipes 34 are connected to the first hub station 28, and the lubricant is diverted from the first hub station 28 via the first-stage transverse pipes 34. Four first-stage vertical pipes 40 are connected to the four first-stage transverse pipes 34 in one-to-one correspondence. At the end of the first-stage vertical pipes 40, the second-stage transverse pipes 36 are connected thereto, so that the lubricant is concentrated together again and reaches the central second hub station 30. The lubricant continues to be delivered upward from the second hub station 30. At the third hub station 30, a plurality of (more than four) third-stage transverse pipes 38 are connected thereto, and then the lubricant is delivered to each first outlet 60 by the corresponding number of third-stage vertical pipes 44. FIG. 3(a1) shows the lubricant delivery process of the embodiment shown in FIG. 3(a) with red lines. The arrangement of the first lubricant delivery path 26 is not limited to the embodiment shown in FIG. 3(a). For example, in other embodiments, the number of the first-stage transverse pipes and vertical pipes may not be four. The number of hub stations may also not be three, which depends on the designer's concept.
[0038] Figure 3(b) shows an embodiment of the head. In the illustrated embodiment, the head includes a first portion 46, a second portion 48, and a first annular space 50 that spaces the first portion 48 from the second portion 48. The first portion 46 is connected to the second portion 48. In one embodiment, the first portion 46 is threadedly connected to the center of the second portion 48, and the second portion 48 is integrated on the top of the movable portion 24. The first annular space 50 has a minute axial spacing g. The length of this axial spacing is set to force the lubricant to be squeezed within the first annular space 50 and diffusely applied to the surface to be lubricated shown by the dashed line. Figure 3(b1) shows, in red lines, the delivery process of the lubricant from the movable portion 24 (i.e., the first outlet 60) to the surface to be lubricated via the first annular space 50 in the embodiment shown in Figure 3(b). Figure 3(c) shows a partial schematic view of the tooling after removing the first portion and the workpiece. It can be seen that the second portion 48 is integrated with the movable portion 24. A threaded hole 58 for connecting the first portion 46 is provided at the center of the second portion 48. One advantage of using a threaded connection is that the first portion 46 can be controllably connected to the second portion 48, that is, the axial spacing length of the first annular space 50 is adjustable. Additionally, as can be seen in Figure 3(c), a plurality of first outlets 60 are arranged in a ring, facilitating the output of the lubricant from multiple directions via the first outlets 60, so as to flow evenly onto the surface to be lubricated.
[0039] In the illustrated embodiment, the surface to be lubricated is the first surface to be lubricated 54 of the workpiece, which is also the inner ring surface of the workpiece. The inner ring surface is sleeved on the head in a form opposite to the circumferential surface of the head. A plurality of first outlets 60 are arranged along the inner ring surface on its radial inner side, and in combination with Figure 3(a), the plurality of first outlets 60 are located at the ends of the third-stage vertical pipes 44 and span across the movable portion 24 and the second portion 48.
[0040] FIG. 4(a)-(d) are schematic diagrams of an embodiment of the second lubricant delivery path involved in the present application. The second lubricant delivery path is arranged in the stationary part. FIG. 4(a) shows the head 10, the stationary part 22, and a part of the movable part 24. The second inlet 62 is arranged radially on the side of the bottom of the stationary part 22. The lubricant is delivered from the bottom to the top along the second lubricant delivery path 27. Similar to the first lubricant delivery path, the second lubricant delivery path 27 includes a plurality of pipes arranged in the vertical direction (which is also the axial direction of the workpiece) and a plurality of pipes arranged in the transverse direction (which is also the radial direction of the workpiece), and these pipes are connected to each other to deliver the lubricant from bottom to top. First, the second inlet 18 is delivered to the central hub station 64 located in the center via a radial pipe (not shown). Eight radial pipes 66 are connected to the central hub station 64, and the lubricant is diverted from the central hub station 64 via the radial pipes 66. Eight axial pipes 68 are connected to the eight radial pipes 66 in one-to-one correspondence. Subsequently, the lubricant is delivered to the ends of the respective radial pipes 66, that is, the respective second outlets 62. FIG. 4(a1) shows the delivery process of the lubricant in the embodiment shown in FIG. 4(a) with red lines. The arrangement of the second lubricant delivery path 27 is not limited to the embodiment shown in FIG. 4(a). For example, in other embodiments, the number of radial pipes and axial pipes may not be eight and may be more. The number of stages of the radial pipes, axial pipes, and hub stations may also be more.
[0041] Figures 4(b)-(c) are cross-sectional views of a partial fixture of the embodiment shown in Figure 4(a). As shown in the figure, the fixture further includes a limit ring 70 and a cover 72. The cover 72 is fixed to the stationary part 22. The stationary part 22 has a cavity 74 inside it, and the limit ring 70 is located in the cavity 74. The limit ring 70 has a first end face 76 facing the cover 72 and a second end face 78 opposite to the first end face 76. The cover 72 is provided with a first step 80 relative to the first end face 76. In the illustrated embodiment, the first step 80 is configured to have a size that can match the first end face 76, that is, when the first end face 76 contacts the first step 80, the first step 80 can receive the limit ring 70 and stop the limit ring 70. The limit ring 70 further has a flange 84, and the cavity 74 further has a second step 82. As shown in Figure 4(c), the flange 84 is configured to abut against the second step 82, so that the limit ring 70 can also be stopped. In addition, the movable part 24 has a movable part surface 86 facing the second end face 78. The movable part 24 together with the head 10 is actuated by the driving part, and the movable part 24 can move a certain distance in the cavity 74. The limit ring 70 can limit the movement of the movable part 24 and the head 10 in one direction. As can be seen from the figure, during the entire movement of the head 10 and the movable part 24 towards the ejection position (i.e., during the upward movement), after the movable part 24 moves to the movable part surface 86 contacts the second end face 78, the limit ring 70 moves upward together with the movable part 24. At this time, the head 10 is in the process of being ejected, and the first step 80 can stop the limit ring 70 from continuing to move in this direction. When the head 10 and the movable part 24 are withdrawn, that is, when moving towards the withdrawal position, the second step 82 can stop the fiber ring 70 from continuing to move in this reverse direction. Figure 4(c) shows this stop state, and after this state, the second end face is separated from the movable part surface.
[0042] When the limit ring abuts against the second step, that is, in the state of Figure 4(c), there is a second annular space 52 between the limit ring 70 and the cover 72. A plurality of second outlets 62 (shown in dashed lines) are arranged axially on the second step 82. Here, for the sake of clear illustration, the second outlets 62 are only shown in dashed lines and are partially shown. The lubricant is squeezed in the second annular space 52 and diffusely applied to the surface to be lubricated. Figure 4(c1) shows, in red lines, the delivery process of the lubricant from the second outlets 62 to the surface to be lubricated via the second annular space 50 in the embodiment shown in Figure 4(c). In the illustrated embodiment, the surface to be lubricated is the second surface to be lubricated 56 of the workpiece, which is also the outer ring surface of the workpiece. A plurality of second outlets are arranged on the radial outer side along the outer ring surface. Figure 4(d) shows a schematic view of the fixture with the cover removed. As shown in this figure, the plurality of second outlets 62, that is, the ends of eight axial pipes, are arranged axially on the stationary part (i.e., the second step 82).
[0043] Referring back to FIGS. 2(a)-(c), the tooling further includes a seat 88 for fixing the driving part 12. The seat 88 is provided with a limiting post 90 and a guiding post 92. The limiting post 90 is used to prevent the moving part 24 from continuing to move in the direction in which the head 10 moves towards the retracted position (i.e., the downward moving direction in the figure). The limiting post 90 can be provided on the seat 88 or on the moving part 24. The moving part 24 is further provided with a guiding member 94 sleeved on the guiding post 92 to assist the movement of the moving part 24. In the illustrated embodiment, the driving part 12 is a cylinder.
[0044] In addition, the first inlet 16 and the second inlet 18 are each equipped with a flow valve (not shown) to control the amount of lubricant supplied to the first lubricant delivery path and the second lubricant delivery path.
[0045] Although specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it should be understood that the present application can be implemented in other ways without departing from such principles.
Claims
1. A tooling for lubricating an annular workpiece, characterized in that Comprising: A driving part (12) and a head (10), A body (14) disposed between the driving part (12) and the head (10), the driving part (12) driving the head (10) to move between a protruding position and a retracting position via the body (14), and in the protruding position, the workpiece (20) is sleeved on the head (10); Wherein a first lubricant delivery path (26) for the first lubricated surface (54) of the workpiece (20) and a second lubricant delivery path (27) for the second lubricated surface (56) are arranged in the body (14), the first lubricant delivery path (26) has a first inlet (16) and a plurality of first outlets (60), and the lubricant entering the first lubricant delivery path (26) via the first inlet (16) is applied to the first lubricated surface (54) via the plurality of first outlets (60), the second lubricant delivery path (27) has a second inlet (18) and a plurality of second outlets (62), and the lubricant entering the second lubricant delivery path (27) via the second inlet (18) is applied to the second lubricated surface (56) via the plurality of second outlets (62).
2. The tooling according to claim 1, characterized in that: The plurality of first outlets (60) are arranged in a ring shape distributed along the first lubricated surface (54); and / or the plurality of second outlets (62) are arranged in a ring shape distributed along the second lubricated surface (56).
3. The tooling according to claim 1, characterized in that: The body (14) includes a stationary part (22) and a movable part (24) movable relative to the stationary part (22), the movable part (24) is connected between the driving part (12) and the head (10) and a part of it passes through the stationary part (22); one of the first lubricant delivery path (26) and the second lubricant delivery path (27) is arranged in the stationary part (22), and the other is arranged in the movable part (24).
4. The tooling according to claim 1, characterized in that: The first inlet (16) and the second inlet (18) are each equipped with a flow valve to control the amount of lubricant supplied to the first lubricant delivery path (26) and the second lubricant delivery path (27).
5. The tooling according to claim 3, characterized in that: The first lubricated surface (54) is the inner ring surface of the workpiece (20); the inner ring surface is sleeved on the head (10) in a form opposite to the circumferential surface of the head (10), the head (10) includes a first part (46), a second part (48), and a first annular space (50) separating the first part (46) from the second part (48), and the axial interval length of the first annular space (50) is set to force the lubricant to be squeezed in the first annular space (50) and diffusely applied to the inner ring surface.
6. The tooling according to claim 5, characterized in that: The first lubricant delivery path (26) is arranged in the movable part (24); the first part (46) is connected to the center of the second part (48) via a thread; the second part (48) is integrated at the top of the movable part (24), and the plurality of first outlets (60) are arranged axially across the movable part (24) and the second part (48).
7. The tooling according to claim 3, characterized in that: The second surface to be lubricated (56) is the outer ring surface of the workpiece (20); the tooling further includes a limit ring (70) and a cover (72) fixed to the stationary part (22). The stationary part (22) has a cavity (74) inside it. The limit ring (70) is located in the cavity (74). The cover (72) is provided with a first step (80) relative to the first end face (76) of the limit ring (70). The first step (80) is configured to receive the limit ring (70) and stop the limit ring (70) in the direction in which the head (10) moves towards the ejection position; the limit ring (70) has a flange (84), and the flange (84) is configured to abut against the second step (82) of the cavity (74) to stop the limit ring (70) in the direction in which the head (10) moves towards the retraction position.
8. The tooling according to claim 7, characterized in that: When the limit ring (70) abuts against the second step (82), there is a second annular space (52) between the limit ring (70) and the cover (72); the second lubricant delivery path (27) is arranged in the stationary part (22), and the plurality of second outlets (62) are arranged axially on the second step (82); the lubricant is squeezed in the second annular space (52) and diffusely applied to the outer ring surface.
9. The tooling according to claim 7, characterized in that: The limit ring (70) further has a second end face (78) opposite to the first end face (76). The movable part (24) has a movable part surface (86) facing the second end face (78). After the movable part (24) moves to contact the second end face (78) during the movement of the head (10) towards the ejection position, the limit ring (70) moves together with the movable part (24).
10. The tooling according to claim 3, characterized in that: The tooling further includes a seat (88) for fixing the driving part (12). One of the seat (88) and the movable part (24) is provided with a limit post (90) to prevent the movable part (24) from continuing to move in the direction in which the head (10) moves towards the retraction position; and / or the driving part (12) is a cylinder.