Necking die for machining inner support of water pump impeller
By designing a shrink die including upper and lower dies, the sliding blocks can be moved simultaneously and stably and outwardly by using components such as nitrogen springs and guide sleeves, the deformation and cracking of finished products caused by traditional shrink dies are solved, and the water pump impeller is improved The shrinking quality and processing stability of the inner brace.
Patent Information
- Application Number
- CN202420887100.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Traditional shrinkage molds are likely to cause the finished product to deform or break when supporting the impeller of the processing pump, resulting in low quality of the finished product and high waste rate, and it is necessary to improve the shrinkage quality.
A shrink die including upper and lower die is designed. Through structures such as pallets, pads, fixing plates, lower cover plates, sliders, etc., the sliding blocks are used to achieve synchronous stability of the slide blocks using components such as nitrogen springs and guide sleeves. Move and reset to ensure smooth and uniformity of the mouth shrinkage process and reduce the risk of deformation and fracture.
The shrinkage quality of the pump impeller inner support is improved, the deformation and cracking of the finished product is reduced, the stability and accuracy of the processing process is ensured, and the unloading operation is facilitated.
Smart Images
Figure CN222153518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a shrinking mold for processing inner supports of a water pump impeller. Background Art
[0002] The impeller is an important component of the water pump. Its main structure is the inner support and blades. The inner support provides an installation position for the blades and keeps them stable. The processing of the inner support includes multiple steps such as drawing, punching, and shrinking. Among them, the purpose of the shrinking process is to shrink the edge of the inner support to ensure the stability of its connection with the connection position. This process needs to be performed by a special shrinking die. The main working method of the traditional shrinking die is to directly stamp the inner support that has completed the previous process according to the target shape as a whole. Although this is efficient, it is particularly easy to cause deformation or even rupture of the finished product. The quality of the finished product is not high and the scrap rate is high, which brings great troubles to manufacturers. Based on this situation, how to improve the shrinking quality of the inner support of the water pump impeller is becoming an increasingly urgent problem that relevant technical personnel need to solve. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a shrinking die for processing the inner support of a water pump impeller.
[0004] A shrinking die for processing the inner support of a water pump impeller, comprising an upper die and a lower die, characterized in that: the lower die comprises a support plate, a cushion block is symmetrically fixedly arranged on the upper part of the support plate, a lower die seat is fixedly arranged on the upper part of the cushion block, a fixed plate is fixedly arranged at the center position of the upper part of the lower die seat, a cushion plate is fixedly arranged on the upper part of the fixed plate, a lower concave die is fixedly arranged on the upper part of the cushion plate, a lower cover plate is arranged at the center position of the upper part of the fixed plate, a slider is arranged on the upper part of the lower cover plate, an upper cover plate is arranged on the upper part of the slider, the upper cover plate is fixedly connected to the lower cover plate by long bolts, a middle column is fixedly arranged at the center position of the upper part of the support plate, a first nitrogen spring is fixedly arranged on the upper part of the middle column, an inclined wedge is fixedly arranged on the upper part of the first nitrogen spring, and the upper die comprises an upper die seat, an upper concave die is fixedly arranged at the lower center position of the upper die seat.
[0005] Furthermore, the center positions of the lower concave die, the pad, the fixed plate, and the lower die base are respectively penetrated with an upper hole, a middle hole, a lower hole, and an upper bottom hole, and the center positions of the upper cover plate and the lower cover plate are respectively penetrated with an upper small hole and a lower small hole.
[0006] Furthermore, the upper portion of the inclined wedge is in a truncated cone shape, and the inner lower portion of the sliding block is parallel to the truncated cone shape of the inclined wedge.
[0007] Furthermore, a limiting tube is fixedly arranged between the upper cover plate and the lower cover plate, the long bolt passes through the limiting tube, a limiting groove is arranged inside the sliding block, the direction of the limiting groove is parallel to the radial direction of the lower cover plate, and the limiting groove is slidably connected to the limiting tube.
[0008] Furthermore, a slide groove is arranged on the upper part of the lower cover plate, and a slide seat is arranged on the lower part of the sliding block. The directions of the slide seat and the slide groove are parallel to the radial direction of the lower cover plate, and the slide seat is slidably connected to the slide groove.
[0009] Furthermore, the number of the sliders is 6 groups, and the 6 groups of sliders are equidistantly arranged in a ring shape.
[0010] Furthermore, a transverse groove is provided through the periphery of the sliding block, and a circular spring is provided inside the transverse groove.
[0011] Furthermore, limiting parts are symmetrically arranged on both sides of the lower part of the inclined wedge, and pressure blocks are symmetrically fixedly arranged on both sides of the upper part of the fixed plate. The end point of the stroke of the inclined wedge is that the lower surface of the pressure block is in contact with the limiting parts. A middle rod is fixedly arranged at the center position of the upper part of the inclined wedge. When the inclined wedge reaches the end point of its own stroke, the upper surface of the middle rod is flush with the lower surface of the upper mold base.
[0012] Furthermore, a second nitrogen spring is fixedly arranged in a ring at equal intervals on the periphery of the middle column, a top plate is fixedly arranged on the upper part of the second nitrogen spring, a lower bottom hole is penetrated through the center position of the top plate, an inner wall of the lower bottom hole is located on the periphery of the middle column, a push rod is fixedly arranged in a ring at equal intervals on the upper part of the top plate, the upper part of the push rod penetrates the lower mold base and the fixed plate and contacts the lower cover plate.
[0013] Furthermore, guide pillars are symmetrically fixedly arranged at the rear of the lower die base, and guide sleeves are symmetrically fixedly arranged at the rear of the upper die base. When the upper die moves up and down, the guide sleeves are slidably plugged into the guide pillars.
[0014] The beneficial effects of the shrinking die for processing the inner support of the water pump impeller of the utility model are:
[0015] 1. The staff only needs to move the upper die vertically downward until it is closed with the lower die, and then start the first nitrogen spring until the pressure block fits with the limit part, so that the 6 sets of sliders can be synchronously and stably moved outward, and cooperate with the upper and lower concave dies to complete the shrinking of the inner support. Compared with the traditional overall stamping directly according to the target shape, the process is smoother, the shrinking is more uniform, the deformation and even cracking of the finished product are significantly reduced, and the shrinking quality of the inner support of the water pump impeller is effectively improved;
[0016] 2. The sliding connection between the guide sleeve and the guide column effectively ensures the accuracy and stability of the upper die's up and down movement. The sliding connection between the limit groove and the limit tube, and the sliding connection between the slide seat and the slide groove effectively ensure the accuracy and stability of the slider's movement, thereby further ensuring the shrinkage quality of the pump impeller inner support;
[0017] 3. The circular spring effectively ensures the synchronous resetting of the slider. The second nitrogen spring, the top plate and the top rod effectively ensure the stable lifting of the lower cover plate, the slider and the upper cover plate as a whole, thereby effectively ensuring the convenience of unloading the inner support that has completed the shrinking process. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the utility model.
[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the internal main structure of the utility model;
[0021] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;
[0022] Figure 4 Schematic diagram of the internal structure of the lower mold of the utility model (I);
[0023] Figure 5 This is a schematic diagram of the internal structure of the lower mold of the utility model (II);
[0024] Figure 6 for Figure 5 A partial enlarged view of the middle A;
[0025] Figure 7 Schematic diagram of the internal structure of the lower mold of the utility model (III);
[0026] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;
[0027] Fig. 9 It is a schematic diagram of the upper structure of the lower mold of the utility model;
[0028] Fig.10 It is a structural schematic diagram of the upper mold of the utility model.
[0029] Among them, 1-upper die seat, 2-upper die, 3-lower die, 4-fixed plate, 5-lower die seat, 6-pad, 7-support plate, 8-guide sleeve, 9-guide column, 10-top rod, 11-top plate, 12-second nitrogen spring, 13-first nitrogen spring, 14-wedge, 15-lower cover plate, 16-upper cover plate, 17-middle column, 18-limiting tube, 19-slide groove, 20-slider, 21-transverse groove, 22-slide seat, 23-limiting groove, 24-pressing block, 25-limiting part, 26-pad, 27-middle rod. DETAILED DESCRIPTION
[0030] In order to make the description clearer, a shrinking die for processing the inner support of a water pump impeller of the utility model is further described in conjunction with the drawings of the specification.
[0031] A shrinking die for processing the inner support of a water pump impeller, comprising an upper die and a lower die, characterized in that: the lower die comprises a support plate 7, a cushion block 6 is symmetrically fixedly arranged on the upper part of the support plate 7, a lower die seat 5 is fixedly arranged on the upper part of the cushion block 6, a fixed plate 4 is fixedly arranged at the center position of the upper part of the lower die seat 5, a cushion plate 26 is fixedly arranged on the upper part of the fixed plate 4, a lower concave die 3 is fixedly arranged on the upper part of the cushion plate 26, a lower cover plate 15 is arranged at the center position of the upper part of the fixed plate 4, a slider 20 is arranged on the upper part of the lower cover plate 15, an upper cover plate 16 is arranged on the upper part of the slider 20, the upper cover plate 16 is fixedly connected to the lower cover plate 15 by long bolts, a middle column 17 is fixedly arranged at the center position of the upper part of the support plate 7, a first nitrogen spring 13 is fixedly arranged on the upper part of the middle column 17, an inclined wedge 14 is fixedly arranged on the upper part of the first nitrogen spring 13, and the upper die comprises an upper die seat 1, and an upper concave die 2 is fixedly arranged at the lower center position of the upper die seat 1.
[0032] Furthermore, the center positions of the lower die 3, the pad 26, the fixing plate 4, and the lower die base 5 are respectively penetrated with an upper hole, a middle hole, a lower hole, and an upper bottom hole, and the center positions of the upper cover plate 16 and the lower cover plate 15 are respectively penetrated with an upper small hole and a lower small hole.
[0033] Furthermore, the upper portion of the inclined wedge 14 is in a truncated cone shape, and the inner lower portion of the sliding block 20 is parallel to the truncated cone shape of the inclined wedge 14 .
[0034] Furthermore, a limiting tube 18 is fixedly arranged between the upper cover plate 16 and the lower cover plate 15, the long bolt passes through the limiting tube 18, a limiting groove 23 is arranged inside the slider 20, the direction of the limiting groove 23 is parallel to the radial direction of the lower cover plate 15, and the limiting groove 23 is slidably connected to the limiting tube 18.
[0035] Furthermore, a slide groove 19 is provided on the upper part of the lower cover plate 15 , and a slide seat 22 is provided on the lower part of the slider 20 . The directions of the slide seat 22 and the slide groove 19 are both parallel to the radial direction of the lower cover plate 15 , and the slide seat 22 is slidably connected to the slide groove 19 .
[0036] Furthermore, the number of the sliders 20 is 6 groups, and the 6 groups of sliders 20 are equidistantly arranged in a ring shape.
[0037] Furthermore, a transverse groove 21 is provided through the periphery of the sliding block 20 , and a circular spring is provided inside the transverse groove 21 .
[0038] Furthermore, limiting portions 25 are symmetrically provided on both sides of the lower portion of the inclined wedge 14, and pressure blocks 24 are symmetrically fixedly provided on both sides of the upper portion of the fixed plate 4. The end point of the stroke of the inclined wedge 14 is when the lower surface of the pressure block 24 is in contact with the limiting portions 25. A middle rod 27 is fixedly provided at the center position of the upper portion of the inclined wedge 14. When the inclined wedge 14 reaches the end point of its stroke, the upper surface of the middle rod 27 is flush with the lower surface of the upper mold base 1.
[0039] Furthermore, a second nitrogen spring 12 is fixedly arranged in a ring at equal intervals on the periphery of the middle column 17, a top plate 11 is fixedly arranged on the upper part of the second nitrogen spring 12, a lower bottom hole is penetrated through the center position of the top plate 11, an inner wall of the lower bottom hole is located on the periphery of the middle column 17, a push rod 10 is fixedly arranged in a ring at equal intervals on the upper part of the top plate 11, an upper part of the push rod 10 penetrates the lower mold base 5 and the fixed plate 4 and contacts the lower cover plate 15.
[0040] Furthermore, guide pillars 9 are symmetrically fixedly arranged at the rear of the lower die base 5, and guide sleeves 8 are symmetrically fixedly arranged at the rear of the upper die base 1. When the upper die moves up and down, the guide sleeves 8 are slidably plugged into the guide pillars 9.
[0041] The working principle of a shrinking die for processing the inner support of a water pump impeller of the utility model is as follows: in the initial state, the upper die and the lower die are separated, the upper die is located directly above the lower die, the inner support to be shrunken is placed on the upper cover plate 16, the upper die is vertically moved downward until it is molded with the lower die, at this time, the upper concave die 2 is fitted with the lower concave die 3, during this process, the guide sleeve 8 and the guide column 9 are slidably plugged to keep the downward movement of the upper die stable, the first nitrogen spring 13 is started to push the inclined wedge 14 to move vertically upward until the pressure block 24 is fitted with the limit portion 25, at this time the upper surface of the middle rod 27 is flush with the lower surface of the upper die seat 1, during this process, the upper truncated cone-shaped position of the inclined wedge 14 pushes the 6 groups of sliders 20 to move horizontally outward along the radial direction of the lower cover plate 15 at the same time until the sliders 20 are outside The side and the inner sides of the upper and lower concave dies 2 and 3 are pressed together with the shrinking position of the inner support at the same time. At this point, the shrinking position is formed, and the upper die is moved vertically upward until it is reset. The inclined wedge 14 is moved vertically downward until it is reset through the first nitrogen spring 13. During this process, the circular spring retracts, and combined with the sliding connection between the limit groove 23 and the limit tube 18, and the sliding connection between the slide seat 22 and the slide groove 19, the six groups of slide blocks 20 are reset synchronously, and the second nitrogen spring 12 is started. The second nitrogen spring 12 pushes the top plate 11 and the push rod 10 to move vertically upward. The push rod 10 pushes the upper cover plate 16, the slide block 20, and the lower cover plate 15 to move vertically upward to a certain height as a whole. The staff can easily remove the inner support that has completed the shrinking process, and a working cycle is completed.
[0042] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.
Claims
1. A shrinking die for processing the inner support of a water pump impeller, comprising an upper die and a lower die, characterized in that: The lower die comprises a supporting plate, a cushion block is symmetrically fixedly arranged on the upper part of the supporting plate, a lower die base is fixedly arranged on the upper part of the cushion block, a fixed plate is fixedly arranged at the upper center position of the lower die base, a cushion plate is fixedly arranged on the upper part of the fixed plate, a lower concave die is fixedly arranged on the upper part of the cushion plate, a lower cover plate is arranged at the upper center position of the fixed plate, a slider is arranged on the upper part of the lower cover plate, an upper cover plate is arranged on the upper part of the slider, the upper cover plate is fixedly connected to the lower cover plate by long bolts, a middle column is fixedly arranged at the upper center position of the supporting plate, a first nitrogen spring is fixedly arranged on the upper part of the middle column, an inclined wedge is fixedly arranged on the upper part of the first nitrogen spring, and the upper die comprises an upper die base, an upper concave die is fixedly arranged at the lower center position of the upper die base.
2. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: The center positions of the lower concave die, the pad, the fixing plate and the lower die seat are respectively penetrated with an upper hole, a middle hole, a lower hole and an upper bottom hole, and the center positions of the upper cover plate and the lower cover plate are respectively penetrated with an upper small hole and a lower small hole.
3. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: The upper portion of the inclined wedge is in a truncated cone shape, and the inner lower portion of the sliding block is parallel to the truncated cone shape of the inclined wedge.
4. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: A limiting tube is fixedly arranged between the upper cover plate and the lower cover plate, the long bolt passes through the limiting tube, a limiting groove is arranged inside the sliding block, the direction of the limiting groove is parallel to the radial direction of the lower cover plate, and the limiting groove is slidably connected to the limiting tube.
5. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: A slide groove is arranged at the upper part of the lower cover plate, and a slide seat is arranged at the lower part of the sliding block. The directions of the slide seat and the slide groove are parallel to the radial direction of the lower cover plate, and the slide seat is slidably connected with the slide groove.
6. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: The number of the sliders is 6 groups, and the 6 groups of sliders are equidistantly arranged in a ring shape.
7. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: A transverse groove is arranged through the periphery of the sliding block, and a circular spring is arranged inside the transverse groove.
8. The shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: Limiting parts are symmetrically arranged on both sides of the lower part of the inclined wedge, and pressure blocks are symmetrically fixedly arranged on both sides of the upper part of the fixed plate. The end point of the stroke of the inclined wedge is that the lower surface of the pressure block is in contact with the limiting parts. A middle rod is fixedly arranged at the center position of the upper part of the inclined wedge. When the inclined wedge reaches the end point of its stroke, the upper surface of the middle rod is flush with the lower surface of the upper mold base.
9. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: A second nitrogen spring is fixedly arranged in a ring shape equidistantly around the periphery of the middle column, a top plate is fixedly arranged on the upper part of the second nitrogen spring, a lower bottom hole is penetrated through the center of the top plate, an inner wall of the lower bottom hole is located on the periphery of the middle column, a push rod is fixedly arranged in a ring shape equidistantly around the upper part of the top plate, an upper part of the push rod penetrates the lower mold base and the fixed plate and contacts the lower cover plate.
10. A shrinking die for processing the inner support of a water pump impeller according to claim 1, characterized in that: The rear part of the lower die seat is symmetrically fixed with guide pillars, and the rear part of the upper die seat is symmetrically fixed with guide sleeves. During the up and down movement of the upper die, the guide sleeves are slidably plugged with the guide pillars.