One-step forming die for axle of heavy flat-bed trailer

Abstract

The utility model discloses a one-step forming die for an axle of a heavy flat-bed trailer. The one-step forming die comprises a lower die, the upper die and the lower die are respectively provided with a shaft part cavity for forming the shaft part and a through cavity which is used for forming the trapezoidal lug boss and penetrates through the upper die and the lower die, and the shaft part cavity is communicated with the through cavity; and the extrusion heads have the shape matched with the cross section of the through cavity and can move in the through cavity in the extending direction of the through cavity, and the two extrusion heads are oppositely arranged.

Description

Technical Field

[0001] The present application belongs to the technical field of axle production equipment, and more specifically, relates to a one-time forming mold for a heavy-duty flatbed trailer axle. Background Art

[0002] With the rapid development of the logistics and transportation industry, heavy-duty flatbed trailers play an increasingly important role in cargo transportation. As an important component of heavy-duty flatbed trailers, the quality and performance of axles have a significant impact on the operating stability, safety and service life of the trailers.

[0003] In the traditional axle manufacturing process, various parts are usually assembled together by welding, bolting, etc. These methods are not only inefficient, but also prone to errors and deformation, affecting product quality; in addition, traditional manufacturing methods also involve multiple processes and complex processing flows, increasing production costs and time; therefore, it is necessary to solve the above technical problems. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a one-time forming mold for a heavy-duty flatbed trailer axle to solve the technical problem of low axle production efficiency in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a one-time forming mold for a heavy-duty flatbed trailer axle, which is used for axle forming, wherein the axle has an axis extending in a first direction and a trapezoidal protrusion protruding from the axis and extending in a second direction, wherein the first direction intersects with the second direction, including:

[0006] Lower mold;

[0007] The upper mold and the lower mold are respectively provided with a shaft cavity for molding the shaft and a through cavity for molding the trapezoidal protrusion and penetrating the upper mold and the lower mold, and the shaft cavity is connected to the through cavity;

[0008] An extrusion head, having a cross-sectional shape adapted to the through cavity and capable of moving inside the through cavity along the extension direction of the through cavity, wherein two extrusion heads are arranged opposite to each other;

[0009] When the two extrusion heads retreat to the set position, the through cavity in the lower mold is used to place the blank and the opposite end surfaces of the two extrusion heads are used to limit the axial position of the blank;

[0010] When the two extrusion heads move forward and approach to a set position, the opposite ends of the two extrusion heads and the lower mold and the upper mold after mold closing together form a cavity for forming the trapezoidal protrusion.

[0011] Optionally, the trapezoidal protrusion has an annular boss and a countersunk portion arranged on the annular boss, and the extrusion head has an annular boss cavity for forming the annular boss and a boss for forming the countersunk portion.

[0012] Optionally, the middle area of ​​the axle further has a recessed portion formed by being recessed from the surface of the shaft portion, and the upper mold has a protruding portion for molding the recessed portion.

[0013] Optionally, the topmost end of the through cavity does not exceed the lowest end of the protrusion.

[0014] Optionally, the one-shot forming die for the heavy-duty flatbed trailer axle further includes an avoidance cavity connected to the shaft cavity and used for accommodating a portion of the trapezoidal protrusion.

[0015] Optionally, the upper mold and the lower mold are respectively provided with exhaust holes connected to the shaft cavity, the exhaust holes on the upper mold pass through the upper mold, and the exhaust holes on the lower mold pass through the lower mold.

[0016] Optionally, a first positioning structure is provided on the lower mold, and a second positioning structure matched with the first positioning structure is provided on the upper mold.

[0017] Optionally, the first positioning structure is a card slot, and the second positioning structure is a card block adapted to the card slot.

[0018] Optionally, at least two of the card slots are arranged at intervals along the first direction and the second direction respectively, and the number of the card blocks corresponds to the card slots.

[0019] Optionally, the first direction is perpendicular to the second direction.

[0020] The beneficial effect of the one-time forming mold for the heavy-duty flatbed trailer axle provided in the present application is that: compared with the prior art, the upper mold and the lower mold in the present application cooperate to form a shaft cavity for forming the shaft portion and a through cavity for forming the trapezoidal protrusion and running through the upper mold and the lower mold; by arranging two relative extrusion heads in the through cavity, the two extrusion heads can be brought close to each other and extrude the blank in a high-temperature state, so that the shaft portion and the trapezoidal protrusion of the axle can be quickly formed, and the production efficiency is far superior to that of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the overall structure of a one-step forming mold for a heavy-duty flatbed trailer axle provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of an extrusion head of a one-step forming die for a heavy-duty flatbed trailer axle provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the working state of the one-step forming mold for the heavy-duty flatbed trailer axle provided in an embodiment of the present application;

[0025] Figure 4 For along Figure 3 The cross-sectional structure diagram along the AA line;

[0026] Figure 5 For along Figure 3 The cross-sectional structure diagram of the middle BB line;

[0027] Figure 6 A schematic diagram of the overall structure of a heavy-duty flatbed trailer axle provided in an embodiment of the present application;

[0028] Figure 7 A front view of the overall structure of a heavy-duty flatbed trailer axle provided in an embodiment of the present application;

[0029] Figure 8 For along Figure 7 Cross-sectional structural diagram along the CC line.

[0030] Among them, the figure marks in the figure are: 101, shaft; 102, trapezoidal protrusion; 103, annular boss; 104, countersunk portion; 105, recess; 201, lower mold; 202, upper mold; 203, shaft cavity; 204, through cavity; 205, extrusion head; 206, annular boss cavity; 207, boss; 208, protrusion; 209, avoidance cavity; 210, exhaust hole; 211, slot; 212, block. Implementation

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] Please also read Figures 1 to 8 , a one-time forming mold for a heavy-duty flatbed trailer axle provided in an embodiment of the present application is now described. This one-time forming mold for a heavy-duty flatbed trailer axle is used for axle forming. The axle described in this embodiment has an axle portion 101 extending along a first direction and a trapezoidal protrusion portion 102 protruding from the axle portion 101 and extending along a second direction, and the first direction intersects with the second direction. Specifically, the one-time forming mold for a heavy-duty flatbed trailer axle includes a lower mold 201, an upper mold 202, and an extrusion head 205. Among them:

[0036] The upper mold 202 and the lower mold 201 are respectively provided with a shaft cavity 203 for molding the shaft 101 and a through cavity 204 for molding the trapezoidal protrusion 102 and penetrating the upper mold 202 and the lower mold 201, and the shaft cavity 203 is connected to the through cavity 204. The extrusion head 205 has a cross-sectional shape adapted to the through cavity 204 and can move inside the through cavity 204 along the extension direction of the through cavity 204, and two extrusion heads 205 are relatively arranged;

[0037] When the two extrusion heads 205 retreat to the set position, the through cavity 204 in the lower mold 201 is used to place the blank and the opposite end faces of the two extrusion heads 205 are used to limit the axial direction of the blank, so that the blank can be ensured to be in the center position of the cavity, which is easy to fill the cavity. At the same time, the through cavity 204 in the lower mold 201 is used to place the blank, so that the axial direction of the blank is consistent with the longitudinal direction of the through cavity 204. In this way, due to the large volume of the through cavity 204, the blank can be directly placed, which reduces the steps of blank making, significantly improves production efficiency and saves work time;

[0038] When the two extrusion heads 205 move forward and approach to a set position, the opposite ends of the two extrusion heads 205 and the closed lower mold 201 and upper mold 202 together form a cavity for forming the trapezoidal protrusion 102 .

[0039] According to the above structure provided in the present embodiment, the raw material blank for producing the vehicle axle can be placed in the through cavity 204 after being heated at high temperature. By arranging two relative extrusion heads 205 in the through cavity 204, the two extrusion heads 205 can be brought close to each other and the blank in a high temperature state can be extruded, so that the shaft portion 101 and the trapezoidal protrusion 102 of the vehicle axle can be quickly formed, and the production efficiency is far superior to that of the prior art.

[0040] In another embodiment of the present application, please refer to Figures 1 to 8 , the trapezoidal protrusion 102 has an annular boss 103 and a countersunk portion 104 arranged on the annular boss 103, and the extrusion head 205 has an annular boss cavity 206 for forming the annular boss 103 and a convex column 207 for forming the countersunk portion 104. According to the above structure provided in this embodiment, when the two extrusion heads 205 extrude the shaft portion 101 and the trapezoidal protrusion 102 of the vehicle bridge, the annular boss 103 and the countersunk portion 104 on the trapezoidal protrusion 102 can be formed together through the annular boss cavity 206 and the convex column 207. At this time, the excess material there is squeezed into the shaft cavity 203 for forming the shaft portion 101, so that flash-free molding is formed, material is saved and material utilization is improved, and it is conducive to further improving the production efficiency of the vehicle bridge.

[0041] In another embodiment of the present application, please refer to Figures 1 to 8 The middle area of ​​the axle also has a concave portion 105 formed by the surface of the shaft portion 101, and the upper mold 202 has a convex portion 208 for molding the concave portion 105. According to the above structure provided in this embodiment, when the two extrusion heads 205 extrude the shaft portion 101 and the trapezoidal convex portion 102 of the axle, the concave portion 105 of the axle can be molded together by the convex portion 208, which is conducive to further improving the production efficiency of the axle.

[0042] In another embodiment of the present application, please refer to Figures 1 to 8 , the top of the through cavity 204 does not exceed the bottom of the protrusion 208. According to the above structure provided in this embodiment, the extrusion head 205 can avoid affecting the forming of the axle recess 105 when moving, which is beneficial to improving the one-time forming efficiency of the axle.

[0043] In another embodiment of the present application, please refer to Figures 1 to 8 The one-step forming mold for the heavy-duty flatbed trailer axle also includes an avoidance cavity 209 connected to the shaft cavity 203 and used to accommodate part of the trapezoidal protrusion 102. According to the above structure provided in this embodiment, the avoidance cavity 209 can improve the connection strength between the trapezoidal protrusion 102 and the shaft 101 on the one hand; on the other hand, the setting of the avoidance cavity 209 can make the extrusion head 205 completely located within the projection range of the trapezoidal protrusion 102, which is conducive to further improving the forming efficiency of the trapezoidal protrusion 102 and the shaft 101.

[0044] In another embodiment of the present application, please refer to Figures 1 to 8 The upper mold 202 and the lower mold 201 are respectively provided with exhaust holes 210 connected to the shaft cavity 203. The exhaust holes 210 on the upper mold 202 penetrate the upper mold 202, and the exhaust holes 210 on the lower mold 201 penetrate the lower mold 201. According to the above structure provided in this embodiment, the exhaust holes 210 are conducive to exhausting the air in the shaft cavity 203 during the extrusion molding process of the axle, which is conducive to improving the production efficiency of the axle on the one hand, and also conducive to improving the molding quality of the axle on the other hand.

[0045] In another embodiment of the present application, please refer to Figures 1 to 8 The lower mold 201 is provided with a first positioning structure, and the upper mold 202 is provided with a second positioning structure matched with the first positioning structure. According to the above structure provided in this embodiment, the first positioning structure and the second positioning structure are conducive to the rapid alignment of the upper mold 202 and the lower mold 201, which is conducive to further improving the production efficiency of the axle.

[0046] In another embodiment of the present application, please refer to Figures 1 to 8 The first positioning structure is a card slot 211, and the second positioning structure is a card block 212 adapted to the card slot 211. According to the above structure provided in this embodiment, when the card block 212 is accommodated in the card slot 211, the upper mold 202 and the lower mold 201 can be quickly aligned, which is conducive to further improving the production efficiency of the axle.

[0047] In another embodiment of the present application, please refer to Figures 1 to 8, at least two slots 211 are provided in the first direction and the second direction, respectively, and the number of the blocks 212 corresponds to the slots 211. According to the above structure provided in this embodiment, the provision of multiple slots 211 and blocks 212 is conducive to improving the accuracy of alignment between the upper mold 202 and the lower mold 201. In another embodiment of the present application, please refer to Figures 1 to 8 , the first direction is perpendicular to the second direction. According to the above structure provided in this embodiment, it is beneficial to further improve the accuracy of alignment between the upper mold 202 and the lower mold 201.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A one-step forming die for a heavy-duty flatbed trailer axle, used for axle forming, the axle comprising an axle portion (101) extending in a first direction and a trapezoidal protrusion portion (102) protruding from the axle portion (101) and extending in a second direction, the first direction intersecting the second direction, characterized in that: include: Lower mold (201); The upper mold (202) and the lower mold (201) are respectively provided with a shaft mold cavity (203) for molding the shaft portion (101) and a through cavity (204) for molding the trapezoidal protrusion (102) and penetrating the upper mold (202) and the lower mold (201), wherein the shaft mold cavity (203) is connected to the through cavity (204); an extrusion head (205) having a cross-sectional shape adapted to the through cavity (204) and capable of moving inside the through cavity (204) along an extension direction of the through cavity (204), wherein two extrusion heads (205) are arranged opposite to each other; When the two extrusion heads (205) retreat to a set position, the through cavity (204) located in the lower mold (201) is used to place the blank, and the opposite end surfaces of the two extrusion heads (205) are used to limit the axial position of the blank; When the two extrusion heads (205) move forward and approach to a set position, the opposite ends of the two extrusion heads (205) together with the closed lower mold (201) and the upper mold (202) form a mold cavity for forming the trapezoidal protrusion (102).

2. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 1, characterized in that: The trapezoidal protrusion (102) is provided with an annular boss (103) and a countersunk hole portion (104) arranged on the annular boss (103), and the extrusion head (205) is provided with an annular boss cavity (206) for forming the annular boss (103) and a boss (207) for forming the countersunk hole portion (104).

3. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 1, characterized in that: The middle area of ​​the axle also has a recessed portion (105) formed by being recessed from the surface of the shaft portion (101), and the upper mold (202) has a raised portion (208) for molding the recessed portion (105).

4. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 3, characterized in that: The topmost end of the through cavity (204) does not exceed the lowest end of the raised portion (208).

5. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 1, characterized in that: The one-step forming die for the heavy-duty flatbed trailer axle also includes an avoidance cavity (209) connected to the shaft cavity (203) and used to accommodate a portion of the trapezoidal protrusion (102).

6. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 1, characterized in that: The upper mold (202) and the lower mold (201) are respectively provided with exhaust holes (210) connected to the shaft cavity (203); the exhaust holes (210) on the upper mold (202) penetrate the upper mold (202), and the exhaust holes (210) on the lower mold (201) penetrate the lower mold (201).

7. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 1, characterized in that: The lower mould (201) is provided with a first positioning structure, and the upper mould (202) is provided with a second positioning structure that matches the first positioning structure.

8. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 7, characterized in that: The first positioning structure is a card slot (211), and the second positioning structure is a card block (212) adapted to the card slot (211).

9. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 8, characterized in that: At least two of the card slots (211) are arranged at intervals along the first direction and the second direction respectively, and the number of the card blocks (212) corresponds to the card slots (211).

10. The one-step forming die for a heavy-duty flatbed trailer axle according to claim 9, characterized in that: The first direction is perpendicular to the second direction.

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