Damping guider forming die for powder metallurgy

Abstract

The utility model relates to the field of powder metallurgy forming, in particular to a damping guider forming die for powder metallurgy. Comprising a middle pipe, a forming ring I and a forming ring II, the forming ring I and the forming ring II are fixedly connected to the lower portion of the middle pipe, a rotating sleeve is fixedly connected to the lower portion of the middle pipe and rotationally connected to a limiting frame, a plurality of air cylinders I are fixedly connected to the lower portion of the limiting frame, outer discs are fixedly connected to air cylinder rods of at least two air cylinders I, lower sleeves are fixedly connected to the outer discs, and a plurality of forming blocks I are fixedly connected to the outer discs. A plurality of air cylinders II are fixedly connected to the limiting frame, an upper sleeve is fixedly connected to air cylinder rods of the air cylinders II, the upper sleeve is in sliding connection with the middle pipe, a plurality of material adding holes are formed in the upper sleeve, forming blocks II corresponding to the forming blocks I in a one-to-one mode are fixedly connected to the inner wall of the upper sleeve, and a plurality of forming blocks III are fixedly connected to the inner wall of the upper sleeve; and the interior of the mold can be conveniently cleaned through rapid decomposition of the mold, and the yield of forming of the damping guider is ensured.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy forming, and more specifically to a forming mold for a shock-absorbing guide in powder metallurgy. Background Technology

[0002] Vibration damping guides typically consist of a guide body, a guide bushing, and a sealing ring. The guide body has a groove on its inner side, the sealing ring is installed within the groove, and the guide bushing presses against the inner side of the guide body with an interference fit. This design effectively reduces the movement clearance of the vibration damper, lowers friction, and thus improves the low-speed force and overall performance of the vibration damper. However, vibration damping guides are manufactured using powder metallurgy or milling. When powder metallurgy is used, the molds used for forming are not easily disassembled and cleaned quickly. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a molding die for a shock absorber guide in powder metallurgy. The rapid disassembly of the die facilitates cleaning of the interior, ensuring a high yield rate for the formed shock absorber guide.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A molding die for a shock absorber guide in powder metallurgy includes a central tube with forming rings I and II fixedly connected to its lower part. A rotating sleeve is fixedly connected to the lower part of the central tube and rotatably connected to a limiting frame. Multiple cylinders I are fixedly connected to the lower part of the limiting frame. An outer disk is fixedly connected to the cylinder rod of at least two cylinders I. A lower sleeve is fixedly connected to the outer disk. Multiple forming blocks I are fixedly connected to the outer disk. Multiple cylinders II are fixedly connected to the limiting frame. An upper sleeve is fixedly connected to the cylinder rod of the multiple cylinders II. The upper sleeve is slidably connected to the central tube. Multiple feeding holes are provided on the upper sleeve. Forming blocks II are fixedly connected to the inner wall of the upper sleeve. Each forming block II corresponds to one of the multiple forming blocks I. Multiple forming blocks III are fixedly connected to the inner wall of the upper sleeve. A protective frame 48 is fixedly connected to the limiting frame 41 to protect electronic components.

[0006] Preferably, the outer plate is provided with multiple through holes I, and the lower part of the limiting frame is fixedly connected with cylinders II corresponding to the multiple through holes I. The cylinder rods of the multiple cylinders II are slidably connected in the multiple through holes I. Top plates are fixedly connected to the cylinder rods of the multiple cylinders II. The upper sleeve is provided with multiple through holes II. The upper sleeve is fitted on the multiple top plates through the multiple through holes II. A nut is threadedly connected to each top plate. A protective frame is fixedly connected to the limiting frame.

[0007] Preferably, the plurality of molding blocks I are evenly distributed, and the plurality of molding blocks II and the plurality of molding blocks III are evenly distributed and alternately arranged, so that when the lower sleeve is coupled to the upper sleeve, the plurality of molding blocks I and the plurality of molding blocks II are in surface contact.

[0008] Preferably, the forming ring II has a shape that is low in the middle and high at the edges.

[0009] Preferably, a connecting plate is fixedly connected to the inner wall of the central tube, and a motor I that drives the connecting plate to rotate is fixedly connected to the middle of the limiting frame.

[0010] Preferably, the plurality of forming blocks I are columnar protrusions with a fan-shaped cross-section.

[0011] Preferably, the plurality of molding blocks II are stepped protrusions with a lower cross section smaller than the upper cross section.

[0012] Preferably, a rotation seal is provided between the upper sleeve and the middle tube.

[0013] Preferably, the plurality of cylinders I start and stop synchronously.

[0014] Preferably, the plurality of cylinders II start and stop synchronously.

[0015] Compared with the prior art, the beneficial effects of the powder metallurgy shock absorber guide molding die of this utility model are as follows: the rapid disassembly of the die facilitates cleaning of the inside of the die, ensuring the yield rate of the shock absorber guide molding; the rotating of the tubular part in the middle facilitates demolding and unloading of the molded shock absorber guide; and the shock absorber guide can be fully molded through injection molding and stamping, ensuring that the molded shock absorber guide has a dense texture. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is an external outline drawing of the mold for forming the shock absorber guide.

[0018] Figure 2 This is a schematic diagram of the molding die for the shock absorber guide.

[0019] Figure 3 A half-sectional view of the mold for forming the shock absorber guide;

[0020] Figure 4 This is a front view of a half-section of the mold for forming the shock absorber guide;

[0021] Figure 5 This is a schematic diagram of the structure of the central tube, forming ring I, and forming ring II;

[0022] Figure 6 This is a half-sectional view of the central tube, forming ring I, and forming ring II;

[0023] Figure 7 A schematic diagram of the structure that drives the central tube to rotate;

[0024] Figure 8This is a schematic diagram showing the position of the outer plate;

[0025] Figure 9 This is a structural diagram of the outer disc, lower sleeve, and molding block I;

[0026] Figure 10 This is a structural diagram of the upper sleeve, molding block III, molding block II, and filling hole;

[0027] Figure 11 A schematic diagram of the structure that drives the upper sleeve to rise and fall.

[0028] In the figure: central tube 11; forming ring I 12; forming ring II 13; rotating sleeve 14; outer plate 21; lower sleeve 22; forming block I 23; through hole I 24; upper sleeve 31; forming block III 32; forming block II 33; feeding hole 34; through hole II 35; limit frame 41; motor I 42; connecting plate 43; cylinder I 44; cylinder II 45; nut 46; top plate 47; protective frame 48. Detailed Implementation

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] refer to Figures 1 to 11 Detailed implementation of the molded shock-absorbing guide:

[0031] A molding die for a shock absorber guide in powder metallurgy includes a central tube 11 and molding rings I12 and II13 fixedly connected to the lower part of the central tube 11. A rotating sleeve 14 is fixedly connected to the lower part of the central tube 11 and is rotatably connected to a limiting frame 41. A connecting plate 43 is fixedly connected to the inner wall of the central tube 11, and a motor I42 for driving the connecting plate 43 to rotate is fixedly connected to the middle part of the limiting frame 41. The lower part of the limiting frame 41 is fixedly connected to multiple cylinders I 44. At least two cylinders I 44 have outer discs 21 fixedly connected to their cylinder rods. Lower sleeves 22 are fixedly connected to the outer discs 21. Multiple forming blocks I 23 are fixedly connected to the outer discs 21. Multiple through holes I 24 are provided on the outer discs 21. The lower part of the limiting frame 41 is fixedly connected to cylinders II 45, each corresponding to one of the multiple through holes I 24. The cylinder rods of the multiple cylinders II 45 are slidably connected within the multiple through holes I 24. A top plate 47 is fixedly connected. Multiple through holes II 35 are provided on the upper sleeve 31. The upper sleeve 31 is fitted on the multiple top plates 47 through the multiple through holes II 35. The upper sleeve 31 is slidably connected to the middle tube 11. A nut 46 is threadedly connected to each top plate 47. Multiple filling holes 34 are provided on the upper sleeve 31. A forming block II 33 corresponding to multiple forming blocks I 23 is fixedly connected to the inner wall of the upper sleeve 31. Multiple forming blocks III 32 are fixedly connected to the inner wall of the upper sleeve 31. A protective frame 48 is fixedly connected to the limiting frame.

[0032] When the shock absorber guide is being formed by powder metallurgy, multiple cylinders II 45 are first activated. The cylinder rods of the multiple cylinders II 45 drive multiple top plates 47 to descend. The multiple top plates 47, together with multiple nuts 46, drive the upper sleeve 31 to descend and couple with the lower sleeve 22 for sealing. The end face of the upper sleeve 31 and the lower sleeve 22 can be set as a stepped surface, so as to fully couple with the lower sleeve 22 to ensure sealing and prevent leakage when the raw materials of powder metallurgy are added, which would cause waste of raw materials, environmental pollution and affect the health of operators, leading to pneumoconiosis in operators. When the upper sleeve 31 is coupled with the lower sleeve 22, injection molding is performed through multiple filling holes 34 into the space in the middle of the coupled upper sleeve 31, lower sleeve 22 and middle tube 11. After injection molding, multiple cylinders I 44 are activated. The cylinder rods of the multiple cylinders I 44 drive the outer disk 21 to reciprocate up and down. Multiple cylinders II 45 are activated. The cylinder rods of the multiple cylinders II 45 drive multiple top plates 47 to rise and fall. The multiple top plates 47, together with multiple nuts 46, drive the upper sleeve 31 to reciprocate up and down. Thus, the material injected by the outer disk 21 and the upper sleeve 31 is subjected to powder metallurgy forming through the rising and falling of the outer disk 21 and the upper sleeve 31.

[0033] After multiple cylinders I 44 and multiple cylinders II 45 stop, motor I 42 is started. Motor I 42 drives the connecting plate 43 to rotate, and the connecting plate 43 drives the middle tube 11 to rotate, thereby realizing the demolding of the middle tube 11 from the formed shock absorber guide, and then realizing the unloading of the shock absorber guide. Then, sintering is performed to complete the processing of the shock absorber guide. The middle tube 11, forming ring I 12, forming ring II 13, outer plate 21, lower sleeve 22 and upper sleeve 31 are used to form the outer frame of the shock absorber guide. Forming block I 23 and forming block II 33 are used to form the through holes in the shock absorber guide, and forming block III 32 is used to form the blind holes in the shock absorber guide, thereby realizing the complete forming of the shock absorber guide.

[0034] When unloading after molding, multiple cylinders II 45 are activated to drive the upper sleeve 31 to slide away from the middle tube 11. Alternatively, multiple nuts 46 can be removed to allow the upper sleeve 31 to slide away from the middle tube 11. Then, the molded shock absorber guide is unloaded, preparing for the next powder metallurgy molding of the shock absorber guide. Through injection molding and stamping, a more compact shock absorber guide can be formed. The rotation of the middle tube 11 also ensures that the unloading of the shock absorber guide is more convenient.

[0035] refer to Figure 8 and 9 Detailed description of an embodiment of forming through holes in multiple forming blocks I23:

[0036] The multiple molding blocks I23 are evenly distributed to ensure that the holes formed by the multiple molding blocks I23 are evenly distributed, and to ensure that the texture of the formed shock-absorbing guide is uniform.

[0037] refer to Figure 3 , 4 Examples of through holes and blind holes on molded shock absorber guides are described in detail in sections 8, 9, and 10:

[0038] The multiple molding blocks II 33 and multiple molding blocks III 32 are evenly distributed and alternately arranged. When the lower sleeve 22 is coupled with the upper sleeve 31, the multiple molding blocks I 23 and the multiple molding blocks II 33 are in surface contact. This ensures that when the upper sleeve 31 descends and couples with the lower sleeve 22 to form the shock absorber guide, the multiple molding blocks I 23 and the multiple molding blocks II 33 are in surface contact to form the fan-shaped through holes, and the multiple molding blocks III 32 form evenly distributed blind holes, ensuring that the formed shock absorber guide has a uniform texture.

[0039] refer to Figure 5 and 6 Detailed examples of forming a slope surface that guides the return of oil:

[0040] The molded ring II13 has a shape that is low in the middle and high at the edges. During the use of the shock absorber guide, the oil will be concentrated during the reciprocating sliding of the plunger. In order to ensure the stroke of the plunger reciprocating sliding, the oil needs to be guided and then flow back. The slope formed by the molded ring II13 plays the role of guiding the flow back.

[0041] refer to Figure 8 and 9 Detailed explanation of an embodiment of the fan-shaped through hole on the molded shock absorber guide:

[0042] The plurality of molding blocks I23 are columnar protrusions with a fan-shaped cross-section, and the plurality of molding blocks II33 are stepped protrusions with a lower cross-section smaller than the upper cross-section. This allows for the formation of stepped fan-shaped through holes through the contacting molding blocks I23 and II33. These stepped fan-shaped through holes ensure sufficient oil return while maintaining the rigidity of the shock absorber guide through the reduced fan-shaped through holes, preventing collapse and deformation after long-term use, which would affect the long-term performance of the shock absorber guide.

[0043] refer to Figure 1 , 2 3. Detailed examples of preventing leakage of added materials:

[0044] A rotation seal is provided between the upper sleeve 31 and the middle tube 11 to prevent material leakage between the upper sleeve 31 and the middle tube 11.

[0045] refer to Figure 1 , 2 3. Examples of powder metallurgy forming of stamped materials are described in detail:

[0046] The multiple cylinders I 44 start and stop synchronously, thereby achieving smooth sliding of the lower sleeve 22. The multiple cylinders II 45 start and stop synchronously, thereby achieving smooth sliding of the upper sleeve 31, and thus realizing the forming of the shock-absorbing guide.

Claims

1. A powder metallurgy cushioning guide forming die characterized by: The lower part of the middle tube (11) is fixedly connected with a shaped ring I (12) and a shaped ring II (13), the lower part of the middle tube (11) is fixedly connected with a rotating sleeve (14), the rotating sleeve (14) is rotationally connected to a limiting frame (41), the lower part of the limiting frame (41) is fixedly connected with a plurality of air cylinders I (44), the cylinder rod of at least two air cylinders I (44) is fixedly connected with an outer disc (21), the outer disc (21) is fixedly connected with a lower sleeve (22), the outer disc (21) is fixedly connected with a plurality of shaped blocks I (23), the limiting frame (41) is fixedly connected with a plurality of air cylinders II (45), the cylinder rod of the plurality of air cylinders II (45) is fixedly connected with an upper sleeve (31), the upper sleeve (31) is slidingly connected with the middle tube (11), a plurality of feeding holes (34) are arranged on the upper sleeve (31), a plurality of shaped blocks II (33) are fixedly connected to the inner wall of the upper sleeve (31), the plurality of shaped blocks II (33) correspond to the plurality of shaped blocks I (23) one by one, and a plurality of shaped blocks III (32) are fixedly connected to the inner wall of the upper sleeve (31).

2. The powder metallurgy shock absorber guide former die of claim 1, wherein: A plurality of through holes I (24) are arranged on the outer disc (21), the lower part of the limiting frame (41) is fixedly connected with air cylinders II (45) corresponding to the plurality of through holes I (24), the cylinder rods of the plurality of air cylinders II (45) are slidingly connected in the plurality of through holes I (24) respectively, the cylinder rods of the plurality of air cylinders II (45) are fixedly connected with top plates (47), a plurality of through holes II (35) are arranged on the upper sleeve (31), the upper sleeve (31) is sleeved with the plurality of top plates (47) through the plurality of through holes II (35), a nut (46) is threadedly connected to each top plate (47), and a protection frame (48) is fixedly connected to the limiting frame (41).

3. The powder metallurgy shock absorber guide former die of claim 1 wherein: The plurality of shaped blocks I (23) are uniformly distributed, the plurality of shaped blocks II (33) and the plurality of shaped blocks III (32) are uniformly and alternately arranged, and the plurality of shaped blocks I (23) and the plurality of shaped blocks II (33) are in surface contact when the lower sleeve (22) is coupled with the upper sleeve (31).

4. The powder metallurgy shock absorber guide former die of claim 1 wherein: The shaped ring II (13) has a shape that the middle part is low and the edge part is high.

5. The powder metallurgy shock absorber guide former die of claim 1 wherein: A connecting disc (43) is fixedly connected to the inner wall of the middle tube (11), and a motor I (42) that drives the connecting disc (43) to rotate is fixedly connected to the middle part of the limiting frame (41).

6. The powder metallurgy shock absorber guide former die of claim 1 wherein: The plurality of shaped blocks I (23) are columnar protrusions with a sector-shaped cross section.

7. The powder metallurgy shock absorber guide former die of claim 1 wherein: The plurality of shaped blocks II (33) are stepped protrusions with a smaller lower part cross section than an upper part cross section.

8. The powder metallurgy shock absorber guide former die of claim 1 wherein: Rotational sealing is arranged between the upper sleeve (31) and the middle tube (11).

9. The powder metallurgy shock absorber guide former die of claim 1 wherein: The plurality of air cylinders I (44) are synchronously started and stopped.

10. The powder metallurgy shock absorber guide former die of claim 1 wherein: The plurality of air cylinders II (45) are synchronously started and stopped.

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