Cold extrusion die for steel ring of cylinder gasket
By designing a cold extrusion mold for cylinder gasket steel rings, the coordination of guide columns and positioning blocks is used to solve the problem of low efficiency in the steel ring preparation process in the prior art, and the efficiency and accuracy of steel ring forming are achieved.
Patent Information
- Application Number
- CN202421310837.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the prior art, the preparation process of steel rims usually adopts vehicle processing methods, which leads to chamfering and turning of the steel rim surface that increases the possibility of fracture and reduces working efficiency.
Design a cold extrusion mold for cylinder gasket steel ring, including upper and lower dies, through the cooperation of guide columns and positioning blocks, the arc chamfered extrusion molding of the steel ring is realized, and the elastic support is provided to the The outer tightening force ensures the positioning and stability of the steel ring during the forming process.
The working efficiency of steel ring preparation is improved, the position deviation of the steel ring during the concave process is reduced, and the concave accuracy of the mold and the finished product quality of the steel ring are improved.
Smart Images
Figure CN222470599U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of mold design, and in particular to a cold extrusion mold for a cylinder gasket steel ring. Background Art
[0002] The cylinder gasket is an elastic sealing element placed between the cylinder block and the cylinder head. Since the cylinder block and the cylinder head cannot be absolutely flat when assembled, a cylinder gasket is needed to prevent high-pressure gas, lubricating oil and cooling water from escaping from the cylinder port. However, as an elastic sealing element, the cylinder gasket will age after long-term use, causing the elasticity of the cylinder gasket to weaken and the strength to decrease, thereby affecting the sealing effect between the cylinder block and the cylinder head. Placing a steel ring between the cylinder block and the cylinder head and the cylinder gasket can improve the sealing strength between the cylinder gasket and the cylinder block and the cylinder head, and improve the sealing effect between the cylinder block and the cylinder head.
[0003] Reference Figure 1 The steel ring 01 is a composite ring with an inner diameter of 182.5 mm and an outer diameter of 193 mm. Arc grooves 011 are provided on both sides of the composite ring along its diameter direction, so that the steel ring 01 and the cylinder gasket can be better matched and placed between the cylinder block and the cylinder head, thereby improving the stability during sealing.
[0004] In the prior art, the process of making steel rims is usually carried out by turning. During the turning process, the steel rim raw material needs to be chamfered. Since the diameter of the steel rim cross section is only 10.5 mm, chamfering its surface greatly increases the possibility of the steel rim breaking, thereby reducing the work efficiency of steel rim preparation. Utility Model Content
[0005] In order to improve the working efficiency of steel ring preparation, the present application provides a cold extrusion die for cylinder gasket steel ring.
[0006] The present application provides a cold extrusion die for a cylinder gasket steel ring, which adopts the following technical solution:
[0007] A cold extrusion die for a cylinder gasket steel ring comprises an upper die and a lower die, the lower die is located below the upper die, an upper top plate is provided on the top of the upper die, a lower bottom plate is provided on the bottom of the lower die, a plurality of vertically arranged guide posts are distributed along the circumference of the outer ring of the lower die on the top of the lower bottom plate, a through hole for the guide post to pass through is vertically opened on the upper top plate corresponding to each guide post, a placement ring groove is provided on the lower die corresponding to the steel ring, a plurality of guide grooves are vertically connected between the lower die and the lower bottom plate, a plurality of the guide grooves are distributed along the circumference of the inner ring of the placement ring groove, a positioning block for positioning the steel ring is slidably arranged in each of the placement ring grooves, and an elastic support member for providing an outward tightening force for the positioning block is provided on the lower die corresponding to each positioning block.
[0008] By adopting the above technical scheme, the operator installs the lower die and the upper die on the punching machine, and then places the cut steel ring raw material in the placement ring groove on the lower die, and drives the upper die to extrude the steel ring raw material on the lower die under the positioning guidance of the guide column by controlling the punching machine to realize the extrusion forming of the circular arc chamfer on the steel ring. During the extrusion forming process, a number of positioning blocks always support the inner ring of the steel ring under the condition that the elastic support members provide an outward tightening force. In this process, the steel ring is positioned by a number of positioning blocks, which reduces the position deviation of the steel ring during the embossing process, thereby helping to improve the embossing accuracy of the mold.
[0009] Optionally, each of the positioning blocks includes a slider inserted in the guide groove and a block extending out of the guide groove for abutting against the inner wall of the steel ring. Each of the sliders is provided with an insertion groove on the side wall away from the guide groove along the sliding direction of the slider. The elastic support member is a first spring inserted in the insertion groove, and the end of the first spring away from the slider abuts against the inner wall of the guide groove.
[0010] By adopting the above technical scheme, the inner ring of the steel ring raw material is jointly mounted on a plurality of resist blocks, and an outward resisting force is applied to the slider through the first spring, thereby achieving a uniform resisting force applied to the steel ring by the plurality of resist blocks, so that the steel ring is always kept fixed during the extrusion molding process, reducing the positional deviation of the steel ring during the embossing process, which is beneficial to improving the embossing accuracy of the mold.
[0011] Optionally, two plug-in grooves are vertically and parallelly formed on the upper side of each of the sliding blocks, a first spring is plugged into each of the plug-in grooves, and the elastic supporting force of the upper first spring is greater than the elastic supporting force of the lower first spring.
[0012] By adopting the above technical scheme, two parallel first springs are arranged on the slider, which can enhance the pressing force applied by the plurality of resistance blocks to the inner ring of the steel ring, thereby improving the stability of the steel ring during the extrusion molding process. If first springs with the same upper and lower elastic supporting forces are used, since the upper spring is closer to the steel ring and is subject to greater resistance, and the lower spring is farther away from the steel ring and is subject to less resistance, it is easy for the lower end of the positioning block to continue to deviate outward after the positioning block fixes the steel ring, causing the positioning block to deflect. The method of adopting a method in which the elastic supporting force of the first spring located above is greater than the elastic supporting force of the first spring located below can improve the translation effect of the slider in the slide groove, reduce the possibility of the slider tipping over during the sliding process, and improve the stability effect when the plurality of resistance blocks apply pressing force to the steel ring.
[0013] Optionally, a limiting groove is opened on the inner side wall of the guide groove on the lower base plate toward the ring groove, and a limiting block is slidably arranged on the bottom side wall of the slider corresponding to the limiting groove. When the two first springs are in a natural state, the limiting block is inserted into the corresponding limiting groove.
[0014] By adopting the above technical solution, the possibility of the slider tipping over during the sliding process or even slipping out of the guide groove is further reduced, and the stabilizing effect of the clamping force applied by the plurality of abutment blocks to the steel ring is improved.
[0015] Optionally, a top support sleeve is coaxially arranged in each of the through holes, and each of the top support sleeves is arranged on the side of the upper top plate facing the lower bottom plate, each of the guide columns slides through the corresponding top support sleeve and slides with the corresponding top support sleeve, and when the upper mold and the lower mold are closed, the top support sleeve is arranged to abut against the lower bottom plate.
[0016] By adopting the above technical solution and setting the top support sleeve, the possibility of excessive downward movement of the upper die due to equipment failure when the upper die and the lower die are pressed together, resulting in damage between the concave and lower dies due to excessive pressing, is reduced, thereby improving the stability of the extrusion die during operation.
[0017] Optionally, each of the guide columns is sleeved with a compression spring, and when the upper mold and the lower mold are closed, the compression spring abuts between the top support sleeve and the lower base plate.
[0018] By adopting the above technical solution, after the cold pressing operation is completed, when the upper die moves upward, in order to reduce the possibility of the upper die sticking to the lower die and causing failure of the extrusion die, the setting of the compression spring helps to push the top support sleeve away from the lower plate through the elastic recovery performance, which is beneficial for the upper die to quickly move away from the lower die during mold separation, thereby improving the working efficiency of the extrusion die in preparing steel rings.
[0019] Optionally, a center hole is vertically opened at the center of the circle of the lower mold, a through groove is opened between the center hole and each guide groove along the sliding direction of the positioning block, a driving column is vertically slidably arranged in the center hole, a push rod connected to the positioning block is slidably arranged in each through groove, the bottom of the driving column is in an inverted cone shape, and each push rod is provided with an inclined surface that abuts against the bottom side of the driving column at the end facing the driving column.
[0020] By adopting the above technical solution, the upper die is driven to move downward, and during the process of the upper die pressing downward, it abuts against the driving column, and drives the driving column to slide vertically in the center hole. During the downward movement of the driving column, it abuts against the inclined surfaces of several push rods, so that the several push rods push the positioning block to slide toward the steel ring raw material along the length direction of the through groove until the positioning block abuts against the inner wall of the steel ring raw material, thereby providing an outward tightening force for the steel ring during the cold extrusion process, thereby improving the inner ring size qualification rate of finished steel rings obtained by batch cold pressing.
[0021] Optionally, the elastic support member includes an abutment ring fixedly mounted on the push rod and a second spring mounted on the push rod, the abutment ring is located in the through groove and slidingly engaged with the through groove, the second spring is located on the side of the abutment ring facing the guide groove, and the second spring abuts between the abutment ring and the inner side wall of the through groove.
[0022] By adopting the above technical solution, when the steel ring is cold-pressed and the upper die is separated from the lower die, the pressure above the driving column disappears, and the abutment rings on the push rods are pushed toward the center hole by the second spring. At this time, the inclined surfaces of the push rods gather toward the center and push the driving rod upward. At the same time, the positioning blocks no longer apply a clamping force to the inner wall of the steel ring. At this time, the operator can quickly remove the finished steel ring, thereby improving the work efficiency of steel ring production.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. The operator installs the lower die and the upper die on the punching machine, and then places the cut steel ring raw material in the placement ring groove on the lower die. The punching machine is controlled to drive the upper die to extrude the steel ring raw material on the lower die under the positioning guidance of the guide column to realize the extrusion molding of the circular arc chamfer on the steel ring. During the extrusion molding process, a number of positioning blocks always support the inner ring of the steel ring under the condition that the elastic support member provides an outward tightening force. In this process, the steel ring is positioned by a number of positioning blocks, which reduces the position deviation of the steel ring during the denting process, thereby helping to improve the denting accuracy of the mold;
[0025] 2. The inner ring of the steel ring raw material is sleeved on a plurality of resisting blocks, and an outward resisting force is applied to the slider by a first spring, so that a plurality of resisting blocks can apply a uniform resisting force to the steel ring, so that the steel ring is always fixed during the extrusion molding process, and the position deviation of the steel ring during the concave pressing process is reduced, which is conducive to improving the concave pressing accuracy of the mold;
[0026] 3. Two parallel first springs are arranged on the slider to enhance the pressing force applied by the plurality of blocks to the inner ring of the steel ring, thereby improving the stability of the steel ring during the extrusion molding process. The elastic supporting force of the upper first spring is greater than the elastic supporting force of the lower first spring, thereby improving the translation effect of the slider in the slide groove, reducing the possibility of the slider tipping over during the sliding process, and improving the stabilizing effect of the pressing force applied by the plurality of blocks to the steel ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic diagram of the finished steel ring
[0028] Figure 2 It is a schematic diagram of the overall structure of Example 1 of the present application.
[0029] Figure 3 It is a cross-sectional view of the overall structure of Example 1 of the present application.
[0030] Figure 4 yes Figure 3 Enlarged view of point A in the middle.
[0031] Figure 5 It is a schematic diagram of the overall structure of Example 2 of the present application.
[0032] Figure 6 It is a cross-sectional view of the overall structure of Example 2 of the present application.
[0033] Figure 7 yes Figure 6 Enlarged view of point B in the middle.
[0034] Description of reference numerals:
[0035] 01. Steel ring; 011. Groove; 1. Upper die; 2. Lower die; 21. Placement ring groove; 22. Guide groove; 23. Center hole; 24. Through groove; 3. Upper top plate; 31. Through hole; 4. Lower bottom plate; 41. Limit groove; 5. Guide limit piece; 51. Top support sleeve; 52. Guide column; 521. Compression spring; 6. Positioning block; 61. Slider; 611. Plug-in groove; 62. Abutment block; 63. Limit block; 7. Elastic support member; 71. First spring; 72. Abutment ring; 73. Second spring; 8. Drive column; 9. Push rod. DETAILED DESCRIPTION
[0036] The following is combined with Figure 2-7This application is described in further detail.
[0037] The embodiment of the present application discloses a cold extrusion die for a cylinder gasket steel ring.
[0038] Example 1
[0039] Reference Figures 2 to 4 A cold extrusion die for a cylinder gasket steel ring comprises an upper die 1 and a lower die 2, the lower die 2 is located below the upper die 1, and an upper top plate 3 is fixedly provided on the back side of the upper die 1 away from the lower die 2, and a lower bottom plate 4 is fixedly provided on the back side of the lower die 2 away from the upper die 1, the upper top plate 3 and the lower bottom plate 4 are arranged in parallel, and a plurality of guide limit members 5 are arranged between the upper top plate 3 and the lower bottom plate 4, a placement annular groove 21 is arranged on the lower die 2 corresponding to the steel ring 01, and a plurality of positioning blocks 6 are axially distributed on the inner ring of the placement annular groove 21 on the lower die 2, and an elastic support member 7 is arranged on the lower die 2 corresponding to each positioning block 6, and the elastic support member 7 is used to provide an outward tightening force for the positioning block 6.
[0040] Reference Figures 2 to 4 The operator installs the lower die 2 and the upper die 1 on the punching machine, and then places the steel ring 01 raw material in the placement ring groove 21 on the lower die 2, and controls the punching machine to drive the upper die 1 to extrude the steel ring 01 raw material on the lower die 2 under the limit of a number of guide limit members 5. During the extrusion molding process of the steel ring 01, a number of positioning blocks 6 always support the inner ring of the steel ring 01 under the condition that the elastic support members 7 provide an outward tightening force to position the steel ring 01, so as to reduce the position deviation of the steel ring 01 during the denting process.
[0041] Reference Figure 2 Vertical through holes 31 are opened at four corners of the upper top plate 3, and a guide limiter 5 is provided at each of the four through holes 31. The guide limiter 5 includes a top support sleeve 51 and a guide column 52. The top support sleeve 51 is fixedly arranged on the side of the upper top plate 3 facing the lower bottom plate 4, and its top end extends into the corresponding through hole 31 and is coaxially fixed with the through hole 31. The guide column 52 is fixedly arranged on the top wall of the lower bottom plate 4 and slides through the corresponding top support sleeve 51, and the guide column 52 is slidably matched with the top support sleeve 51.
[0042] Reference Figure 2 Each guide column 52 is sleeved with a compression spring 521 . When the upper mold 1 and the lower mold 2 are closed, the compression spring 521 abuts between the supporting sleeve 51 and the lower base plate 4 .
[0043] Reference Figures 2 to 4In this embodiment, four guide grooves 22 are provided between the lower die 2 and the lower base plate 4 in a vertical connection. The four guide grooves 22 are evenly distributed along the inner circumference of the placement ring groove 21. The guide groove 22 in the lower base plate 4 is provided with a limit groove 41 on the side wall facing the placement ring groove 21. A positioning block 6 is provided corresponding to each guide groove 22 for sliding. The positioning block 6 includes a slider 61, a stopper 62 and a limiter 63. The slider 61 is located in the guide groove 22 and slides with the guide groove 22. The stopper 62 is integrally formed at the top of the slider 61 extending out of the guide groove 22 and contacts the inner wall of the steel ring 01 toward the placement ring groove 21. The limiter 63 is integrally formed on the bottom side wall of the slider 61 facing the placement ring groove 21, and the limiter 63 is inserted into the corresponding limiter groove 41 and slides with the limiter groove 41.
[0044] Reference Figure 4 , two plug-in slots 611 are vertically and parallelly provided on each slider 61. The elastic support member 7 in this embodiment is a first spring 71. One first spring 71 is provided corresponding to each plug-in slot 611, and each first spring 71 is plugged and installed in the corresponding plug-in slot 611. The end of the first spring 71 away from the slider 61 abuts against the inner side wall of the guide slot 22. The elastic support force of the first spring 71 located at the upper side in each guide slot 22 is greater than the elastic support force of the first spring 71 located at the lower side.
[0045] The implementation principle of a cold extrusion die for a cylinder gasket steel ring in an embodiment of the present application is as follows: an operator installs a lower die 2 and an upper die 1 on a punching machine, and then places the raw steel ring 01 in the placement ring groove 21 on the lower die 2, and controls the punching machine to drive the upper die 1 to extrude the raw steel ring 01 on the lower die 2 under the guide limit of a plurality of guide columns 52 and a supporting sleeve 51 that slides together, and during the extrusion molding process of the steel ring 01, a plurality of positioning blocks 6 always support the inner ring of the steel ring 01 under the condition that the first spring 71 provides an outward tightening force to position the steel ring 01.
[0046] Example 2
[0047] Reference Figures 5 to 7 The difference between this embodiment and the first embodiment is that the way of applying the outward tightening force to the positioning block 6 is different, and the elastic support member 7 is also different.
[0048] Reference Figure 6A center hole 23 is vertically opened at the center of the lower mold 2, and a through groove 24 is opened between the center hole 23 and each guide groove 22 along the sliding direction of the positioning block 6. A driving column 8 is vertically slidably arranged in the center hole 23, and the bottom of the driving column 8 is in an inverted cone shape. A push rod 9 is slidably arranged in each through groove 24, and one end of the push rod 9 is fixed on the positioning block 6, and the other end is provided with an inclined surface that fits the bottom side wall of the driving column 8 toward the inverted cone-shaped bottom of the driving column 8.
[0049] Reference Figure 7 The elastic support member 7 in this embodiment includes a contact ring 72 and a second spring 73. The contact ring 72 is located in the through groove 24 and slides with the through groove 24. The second spring 73 is located on the side of the contact ring 72 facing the guide groove 22 and is sleeved on the push rod 9. At the same time, the second spring 73 contacts between the contact ring 72 and the inner wall of the through groove 24.
[0050] The implementation principle of Example 2 is to drive the upper mold 1 to move downward. During the downward pressing process of the upper mold 1, it abuts against the driving column 8, and drives the driving column 8 to slide vertically in the center hole 23. During the downward movement of the driving column 8, it abuts against the inclined surfaces of several push rods 9, so that the several push rods 9 push the positioning block 6 to slide toward the steel ring 01 raw material along the length direction of the through groove 24 until the positioning block 6 abuts against the inner wall of the steel ring 01 raw material, providing an outward tightening force to the steel ring 01 during the cold extrusion process.
[0051] When the steel ring 01 is cold-pressed and the upper die 1 is separated from the lower die 2, the pressure above the driving column 8 disappears, and the abutment rings 72 on the push rods 9 are pushed toward the center hole 23 through the second spring 73. At this time, the inclined surfaces of the push rods 9 gather at the center and push the driving rods upward. At the same time, the positioning blocks 6 no longer apply a clamping force to the inner wall of the steel ring 01. At this time, the operator can quickly remove the finished steel ring 01.
[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cold extrusion die for a cylinder gasket steel ring, comprising an upper die (1) and a lower die (2), wherein the lower die (2) is located below the upper die (1), and is characterized in that: An upper top plate (3) is arranged at the top of the upper mold (1), and a lower bottom plate (4) is arranged at the bottom of the lower mold (2). A plurality of vertically arranged guide columns (52) are distributed along the circumference of the outer ring of the lower mold (2) at the top of the lower bottom plate (4). A through hole (31) for the guide column (52) to pass through is vertically opened on the upper top plate (3) corresponding to each guide column (52). A placement ring groove (21) is arranged on the lower mold (2) corresponding to the steel ring (01). A plurality of guide grooves (22) are vertically connected between the lower mold (2) and the lower bottom plate (4). The plurality of guide grooves (22) are distributed along the circumference of the inner ring of the placement ring groove (21). A positioning block (6) for positioning the steel ring (01) is slidably arranged in each placement ring groove (21), and an elastic support member (7) for providing an outward tightening force for the positioning block (6) is provided on the lower mold (2) corresponding to each positioning block (6).
2. The cold extrusion die for cylinder gasket steel ring according to claim 1, characterized in that: Each of the positioning blocks (6) comprises a slider (61) slidably arranged in the guide groove (22) and a stopper (62) extending out of the guide groove (22) for contacting the inner wall of the steel ring (01); a plug-in groove (611) is provided on the side wall of each slider (61) away from the guide groove (22) along the sliding direction of the slider (61); the elastic support member (7) is a first spring (71) plugged into the plug-in groove (611); and the end of the first spring (71) away from the slider (61) contacts the inner wall of the guide groove (22).
3. The cold extrusion die for cylinder gasket steel ring according to claim 2, characterized in that: Two plugging grooves (611) are vertically arranged in parallel on each of the sliding blocks (61), a first spring (71) is inserted into each of the plugging grooves (611), and the elastic supporting force of the first spring (71) located at the top is greater than the elastic supporting force of the first spring (71) located at the bottom.
4. The cold extrusion die for cylinder gasket steel ring according to claim 3, characterized in that: A limiting groove (41) is provided on the inner side wall of the guide groove (22) on the lower bottom plate (4) facing the placement ring groove (21), and a limiting block (63) is slidably provided on the bottom side wall of the sliding block (61) corresponding to the limiting groove (41); when the two first springs (71) are in a natural state, the limiting block (63) is inserted into the corresponding limiting groove (41).
5. The cold extrusion die for cylinder gasket steel ring according to claim 1, characterized in that: A top support sleeve (51) is coaxially arranged in each through hole (31), and each top support sleeve (51) is arranged on the side of the upper top plate (3) facing the lower bottom plate (4). Each guide column (52) slides through the corresponding top support sleeve (51) and is slidably matched with the corresponding top support sleeve (51). When the upper mold (1) and the lower mold (2) are closed, the top support sleeve (51) is arranged to contact the lower bottom plate (4).
6. The cold extrusion die for cylinder gasket steel ring according to claim 5, characterized in that: A compression spring (521) is sleeved on each guide column (52). When the upper mold (1) and the lower mold (2) are closed, the compression spring (521) abuts between the supporting sleeve (51) and the lower base plate (4).
7. The cold extrusion die for cylinder gasket steel ring according to claim 1, characterized in that: A center hole (23) is vertically provided at the center of the lower mold (2), and a through groove (24) is provided between the center hole (23) and each guide groove (22) along the sliding direction of the positioning block (6). A driving column (8) is vertically slidably arranged in the center hole (23), and a push rod (9) connected to the positioning block (6) is slidably arranged in each through groove (24). The bottom of the driving column (8) is in an inverted cone shape, and each push rod (9) has an inclined surface at its end facing the driving column (8) to abut against the bottom side of the driving column (8).
8. The cold extrusion die for cylinder gasket steel ring according to claim 7, characterized in that: The elastic support member (7) comprises an abutment ring (72) fixedly mounted on the push rod (9) and a second spring (73) mounted on the push rod (9); the abutment ring (72) is located in the through groove (24) and is slidably matched with the through groove (24); the second spring (73) is located on the side of the abutment ring (72) facing the guide groove (22), and the second spring (73) abuts between the abutment ring (72) and the inner side wall of the through groove (24).