Necking die
By designing multiple heat dissipation grooves through the side wall of the seat body in the shrink mold, the problem of insufficient heat dissipation in the prior art is solved, and stronger heat dissipation capabilities and more stable shrinkage processing process are achieved.
Patent Information
- Application Number
- CN202422217933.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the shrinkage process of the existing shrinkage mold, heat dissipation is insufficient, resulting in excessive heat expansion of the air inside the mold, affecting the further extension of the pipe diameter and the realization of the shrinkage port.
A shrink mold is designed including a plurality of heat dissipation grooves that penetrate the side walls of the seat body. The heat dissipation grooves penetrate the side walls of the seat body radially and are spaced apart in the circumferential direction, so that heat dissipation can be directly dissipated through the side walls of the seat body and improve the heat dissipation ability.
Through the heat dissipation groove that penetrates the side wall of the seat body, the heat dissipation ability of the shrink mold is significantly improved, ensuring that the heat can be effectively dissipated, avoiding the problem of overheating and expansion of the air, and achieving a stronger heat dissipation effect.
Smart Images
Figure CN223028305U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline preparation, in particular to a necking die. Background Art
[0002] When the existing necking die is used for necking the pipeline, heat will be generated during the necking deformation process of the pipeline. If the heat cannot be discharged from the heat dissipation grooves in time, problems such as excessive heat expansion and compression of the air inside the necking die will occur, which will then cause problems such as the pipeline diameter being unable to further penetrate and the necking not being achievable.
[0003] In order to dissipate heat as soon as possible, non-through heat dissipation grooves are usually opened on the hole wall of the processing hole used for necking the necking die. When the pipe orifice abuts against the hole wall of the processing hole, there will be a gap with the groove wall of the heat dissipation groove. Therefore, it is beneficial for air and heat to be discharged from the opening of the processing hole along the heat dissipation groove. However, when the heat dissipation requirement is high, the usual heat dissipation grooves are still difficult to meet the heat dissipation requirement. Summary of the Utility Model
[0004] Based on this, in view of the above technical problems, the utility model provides a necking die.
[0005] A necking die includes a seat body. The seat body is axially provided with a processing hole for a pipeline to be processed to extend into. A plurality of heat dissipation grooves are opened on the hole wall of the processing hole, and all the plurality of heat dissipation grooves penetrate the side wall of the seat body in the radial direction. The plurality of heat dissipation grooves are circumferentially spaced apart along the seat body and extend axially along the seat body.
[0006] With such a setting, when the processing hole necking the pipeline to be processed, a large amount of heat will be generated. The heat dissipation grooves can help dissipate the heat. Moreover, since the heat dissipation grooves penetrate the side wall of the seat body, the heat can be directly dissipated along the circumferential side wall of the seat body through the heat dissipation grooves, rather than being dissipated through the gap between the processing hole and the pipeline to be processed. Therefore, the heat dissipation ability is stronger.
[0007] In one embodiment, the plurality of heat dissipation grooves include at least one first groove and at least one second groove. Along the axial direction of the seat body, the depth of the first groove is greater than the depth of the second groove.
[0008] In one embodiment, the plurality of heat dissipation grooves 12 include at least one first groove 121 and at least one second groove 122. Both the first groove and the second groove are plural, and the number of each is an even number. The plurality of first grooves are pairwise opened on the opposite sides of the seat body, and the plurality of second grooves are pairwise opened on the opposite sides of the seat body.
[0009] In one embodiment, the first groove and the second groove are respectively formed on the same end surface of the base body, and both axially extend towards the other end of the base body. Along the circumferential direction of the base body, the first groove and the second groove are arranged staggeredly.
[0010] In one embodiment, the minimum inner diameter of the processing hole is C, the axial depth of the first groove along the base body is B, the axial depth of the second groove along the base body is A, and the circumferential width of the heat dissipation groove is D, satisfying:
[0011] When 4.76 mm ≤ C ≤ 7.94 mm, 0 < A ≤ 5 mm, 0 < B ≤ 8 mm, and 0.2 mm ≤ D ≤ 2 mm.
[0012] In one embodiment, the minimum inner diameter of the processing hole is C, the axial depth of the first groove along the base body is B, the axial depth of the second groove along the base body is A, and the circumferential width of the heat dissipation groove is D, satisfying:
[0013] When 9.52 mm ≤ C ≤ 15.88 mm, 0 < A ≤ 8 mm, 0 < B ≤ 12 mm, and 0.4 mm ≤ D ≤ 4 mm.
[0014] In one embodiment, the minimum inner diameter of the processing hole is C, the axial depth of the first groove along the base body is B, the axial depth of the second groove along the base body is A, and the circumferential width of the heat dissipation groove is D, satisfying:
[0015] When 19.05 mm ≤ C ≤ 22.22 mm, 0 < A ≤ 10 mm, 0 < B ≤ 15 mm, and 0.4 mm ≤ D ≤ 4 mm.
[0016] In one embodiment, the number of the heat dissipation grooves is set to be 2 - 6.
[0017] In one embodiment, the processing hole includes a first hole section and a second hole section. The first hole section and the second hole section are connected, and the first hole section forms a free end face. The inner diameter of the first hole section gradually decreases from the free end face along the depth direction of the processing hole, and the inner diameter of the second hole section remains unchanged along the depth direction of the processing hole.
[0018] In one embodiment, the inner diameter of the second hole section is the same as the minimum inner diameter of the first hole section.
[0019] Compared with the prior art, the utility model improves the heat dissipation capacity of the heat dissipation groove by arranging the heat dissipation groove to penetrate the side wall of the seat body. Moreover, the size of the heat dissipation groove, including the depth and width, etc., is flexibly adjusted according to the size to be processed by the necking die, so that the influence of the heat dissipation groove on the strength of the seat body is reduced on the premise of meeting the heat dissipation requirements. Description of the Drawings
[0020] Figure 1 It is a schematic structural diagram of one embodiment of the necking die provided by the utility model;
[0021] Figure 2 It is a cross-sectional view of one embodiment of the necking die provided by the utility model;
[0022] Figure 3 It is a side view of one embodiment of the necking die provided by the utility model.
[0023] The meanings represented by the symbols in the figure are as follows:
[0024] 100, necking die; 10, seat body; 11, processing hole; 111, first hole section; 112, second hole section; 12, heat dissipation groove; 121, first groove; 122, second groove. Detailed Embodiments
[0025] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0026] It should be noted that when a mechanism is referred to as "fixed to" or "disposed on" another mechanism, it can be directly on the other mechanism or there can also be an intermediate mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intermediate mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.
[0027] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0028] In this application, unless otherwise clearly specified and defined, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.
[0029] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.
[0030] The present utility model provides a necking die 100. A plurality of heat dissipation grooves 12 penetrating through machining holes 11 are formed on the side wall of the seat body 10, and the depths of the plurality of heat dissipation grooves 12 are different. Therefore, when the seat body 10 of different sizes performs necking processing on pipes to be processed with different pipe diameters, the depth of the heat dissipation grooves 12 can be adaptively adjusted so that the heat dissipation capacity of the seat body 10 always meets the working requirements.
[0031] Please refer to Figures 1-3 , the necking die 100 includes a seat body 10. The seat body 10 is axially provided with a machining hole 11 for the pipe to be processed to extend into. A plurality of heat dissipation grooves 12 are formed on the hole wall of the machining hole 11, and the plurality of heat dissipation grooves 12 all penetrate through the side wall of the seat body 10 in the radial direction. The plurality of heat dissipation grooves 12 are spaced along the circumferential direction of the seat body 10 and extend along the axial direction of the seat body 10. Thus, when the machining hole 11 performs necking on the pipe to be processed, a large amount of heat will be generated. The heat dissipation grooves 12 can help dissipate the heat. Moreover, since the heat dissipation grooves 12 penetrate through the side wall of the seat body 10, the heat can directly be dissipated through the heat dissipation grooves 12 along the circumferential side wall of the seat body 10 without being dissipated through the gap between the machining hole 11 and the pipe to be processed. Therefore, the heat dissipation capacity is stronger.
[0032] It should be noted that when necking the pipeline to be processed with different pipe diameters, different amounts of heat are generated. For example, when necking a 12-mm pipe diameter to 6 mm and when necking a 9-mm pipe diameter to 6 mm, different amounts of heat are generated. If the heat dissipation grooves 12 of the current necking die 100 are set to be able to meet the necking process from 9 mm to 6 mm, then when the necking die 100 necks the pipe orifice with a 12-mm pipe diameter, since more heat will be generated, there is a risk that the heat dissipation grooves 12 are insufficient in heat dissipation capacity at this time.
[0033] Preferably, the heat dissipation grooves 12 extend to the end face of the seat body 10, which is convenient for processing and can improve the heat dissipation capacity. In other embodiments, they may not extend to the end face but are spaced from the end face.
[0034] Based on this, the multiple heat dissipation grooves 12 provided by the present utility model include at least one first groove 121 and at least one second groove 122. Along the axial direction of the seat body 10, the depth of the first groove 121 is greater than the depth of the second groove 122. In this way, since the greater the depth along the axial direction of the seat body 10, the larger the notch area of the heat dissipation groove 12, the larger the air flow rate per unit time, so a stronger heat dissipation capacity is provided. The fact that the depth of the first groove 121 is greater than the depth of the second groove 122 makes the heat dissipation capacity of the first groove 121 stronger than that of the second groove 122. The first groove 121 can cope with higher heat dissipation requirements, so that the necking die 100 can be competent for necking work of more than one caliber.
[0035] Furthermore, both the first grooves 121 and the second grooves 122 are multiple, and the numbers are both even numbers. The multiple first grooves 121 are arranged in pairs on the opposite sides of the seat body 10, and the multiple second grooves 122 are arranged in pairs on the opposite sides of the seat body 10. In this way, when the necking die 100 is working, the notch areas of the heat dissipation grooves 12 on the opposite sides are the same, so the heat dissipation capacities of the heat dissipation grooves 12 on the opposite sides are the same, so the heat dissipation capacities on both sides of the necking die 100 are balanced and the temperature is more balanced. The problem that the temperature of a particular position of the seat body 10 is particularly high is avoided, and the situation that the strength of the seat body 10 is insufficient caused by this problem is prevented.
[0036] Of course, in other embodiments, it is also possible to provide one first groove 121 and one second groove 122 respectively, as long as the heat dissipation requirements are met.
[0037] It should be noted that arranging in pairs means that the number is two and they are symmetrically arranged on both sides of the seat body 10.
[0038] The first slot 121 and the second slot 122 are respectively formed on the same end surface of the base body 10, and both axially extend towards the other end of the base body 10. Along the circumferential direction of the base body 10, the first slot 121 and the second slot 122 are arranged in a staggered manner. In this way, the heat dissipation capacity of the base body 10 can be made more uniform in the circumferential direction. Of course, in an embodiment, when there are two second slots 122 and four first slots 121 formed on the base body 10, the situation where two first slots 121 are adjacent is allowed. Similarly, when there are two first slots 121 and four second slots 122 formed on the base body 10, the situation where two second slots 122 are adjacent should be allowed.
[0039] Specifically, for different requirements of necking down dimensions, the depth, width and quantity of the heat dissipation slots 12 should be adaptively changed, which will be elaborated in detail one by one in this application.
[0040] Define the minimum inner diameter of the processing hole 11 as C, the depth of the first slot 121 along the axial direction of the base body 10 as B, the depth of the second slot 122 along the axial direction of the base body 10 as A, and the circumferential width of the heat dissipation slot 12 as D.
[0041] When 4.76 mm ≤ C ≤ 7.94 mm, the processing hole 11 can neck down the pipeline to be processed to between 4.76 mm and 7.94 mm. At this time, 0 < A ≤ 5 mm, 0 < B ≤ 8 mm and 0.2 mm ≤ D ≤ 2 mm. In this way, both the heat dissipation capacity of the base body 10 can be ensured, and the unnecessary opening of the heat dissipation slots 12 is avoided, so as to reduce the processing cost and prevent the heat dissipation slots 12 from affecting the structural strength of the base body 10.
[0042] When 9.52 mm ≤ C ≤ 15.88 mm, the processing hole 11 can neck down the pipeline to be processed to between 9.52 mm and 15.88 mm. At this time, the heat dissipation requirement of the base body 10 is further improved. Therefore, 0 < A ≤ 8 mm, 0 < B ≤ 12 mm and 0.4 mm ≤ D ≤ 4 mm. Compared with the previous embodiment, the upper limit of the heat dissipation slots 12 that can be opened in this embodiment increases. Therefore, the heat dissipation capacity of the base body 10 is also improved compared with the previous embodiment. And the same as above, the upper limit of the size of the heat dissipation slots 12 is specified on the premise of meeting the heat dissipation requirement, avoiding the unnecessary opening of the heat dissipation slots 12, so as to reduce the processing cost and prevent the heat dissipation slots 12 from affecting the structural strength of the base body 10.
[0043] When 19.05 mm ≤ C ≤ 22.22 mm, the processing hole 11 can reduce the diameter of the pipeline to be processed to between 19.05 mm and 22.22 mm. Compared with the previous embodiment, the heat dissipation requirement of the seat body 10 in this embodiment is further improved. Therefore, the relevant dimensions of the heat dissipation groove 12 are set as: 0 < A ≤ 10 mm, 0 < B ≤ 15 mm, and 0.4 mm ≤ D ≤ 4 mm. Its technical effect is similar to the above, reducing the impact of the heat dissipation groove 12 on the strength of the seat body 10 while meeting the heat dissipation requirement, which will not be elaborated here.
[0044] Moreover, in each embodiment, the number of the heat dissipation grooves 12 is set to 2 - 6. This enables the heat dissipation grooves 12 to form the first groove 121 and the second groove 122, achieving a combination of deep and shallow grooves, and also avoiding excessive heat dissipation grooves 12 from affecting the structural strength of the seat body 10. Exemplarily, the heat dissipation grooves 12 are provided with 2, 4, or 6.
[0045] In addition, the processing hole 11 includes a first hole section 111 and a second hole section 112. The first hole section 111 and the second hole section 112 are connected, and the first hole section 111 forms a free end face. The inner diameter of the first hole section 111 gradually decreases along the depth direction of the processing hole 11 from the free end face, and the inner diameter of the second hole section 112 remains unchanged along the depth direction of the processing hole 11. In this way, the gradually decreasing inner diameter can form an arc-shaped inner wall surface of the processing hole 11, thereby guiding the pipe orifice to be processed into it, facilitating the necking work.
[0046] Furthermore, the inner diameter of the second hole section 112 is the same as the minimum inner diameter of the first hole section 111. In this way, the process of the pipe orifice to be processed entering the second hole section 112 can be made smoother.
[0047] Compared with the prior art, the present utility model improves the heat dissipation capacity of the heat dissipation groove 12 by providing the heat dissipation groove 12 to penetrate the side wall of the seat body 10. And, the dimensions of the heat dissipation groove 12, including depth and width, etc., are flexibly adjusted according to the dimensions to be processed by the necking die 100, so as to reduce the impact of the heat dissipation groove 12 on the strength of the seat body 10 while meeting the heat dissipation requirement.
[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0049] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. A necking die, characterized in that: The invention comprises a seat body (10), wherein the seat body (10) is provided with a processing hole (11) along the axial direction for the pipeline to be processed to extend therein, a plurality of heat dissipation grooves (12) are provided on the hole wall of the processing hole (11), and the plurality of heat dissipation grooves (12) all penetrate the side wall of the seat body (10) along the radial direction, and the plurality of heat dissipation grooves (12) are distributed at intervals along the circumference of the seat body (10) and extend along the axial direction of the seat body (10).
2. The necking mold according to claim 1, characterized in that: The plurality of heat dissipation grooves (12) include at least one first groove (121) and at least one second groove (122); along the axial direction of the seat body (10), the depth of the first groove (121) is greater than the depth of the second groove (122).
3. The necking mold according to claim 1, characterized in that: The plurality of heat dissipation slots (12) include at least one first slot (121) and at least one second slot (122); the first slots (121) and the second slots (122) are both multiple and in an even number; the plurality of first slots (121) are arranged in pairs on two opposite sides of the base body (10); and the plurality of second slots (122) are arranged in pairs on two opposite sides of the base body (10).
4. The necking mold according to claim 2 or 3, characterized in that: The first groove (121) and the second groove (122) are respectively opened on the same end surface of the seat body (10), and both extend axially toward the other end of the seat body (10); along the circumference of the seat body (10), the first groove (121) and the second groove (122) are arranged alternately.
5. The necking mold according to claim 2, characterized in that: The minimum inner diameter of the processed hole (11) is C, the depth of the first groove (121) along the axial direction of the seat body (10) is B, the depth of the second groove (122) along the axial direction of the seat body (10) is A, and the circumferential width of the heat dissipation groove (12) is D, satisfying: When 4.76mm≤C≤7.94mm, 0<A≤5mm, 0<B≤8mm and 0.2mm≤D≤2mm.
6. The necking mold according to claim 2, characterized in that: The minimum inner diameter of the processed hole (11) is C, the depth of the first groove (121) along the axial direction of the seat body (10) is B, the depth of the second groove (122) along the axial direction of the seat body (10) is A, and the circumferential width of the heat dissipation groove (12) is D, satisfying: When 9.52mm≤C≤15.88mm, 0<A≤8mm, 0<B≤12mm and 0.4mm≤D≤4mm.
7. The necking mold according to claim 2, characterized in that: The minimum inner diameter of the processed hole (11) is C, the depth of the first groove (121) along the axial direction of the seat body (10) is B, the depth of the second groove (122) along the axial direction of the seat body (10) is A, and the circumferential width of the heat dissipation groove (12) is D, satisfying: When 19.05mm≤C≤22.22mm, 0<A≤10mm, 0<B≤15mm and 0.4mm≤D≤4mm.
8. The necking mold according to any one of claims 1 or 5-7, characterized in that: The number of the heat dissipation slots (12) is set to 2-6.
9. The necking mold according to claim 1, characterized in that: The processing hole (11) comprises a first hole segment (111) and a second hole segment (112), the first hole segment (111) and the second hole segment (112) are connected, and the first hole segment (111) forms a free end surface, the inner diameter of the first hole segment (111) gradually decreases from the free end surface along the depth direction of the processing hole (11), and the inner diameter of the second hole segment (112) remains unchanged along the depth direction of the processing hole (11).
10. The necking mold according to claim 9, characterized in that: The inner diameter of the second hole section (112) is the same as the minimum inner diameter of the first hole section (111).