Forming die and lower fork pipe of electric moped

Abstract

The utility model relates to the technical field of stamping dies, in particular to a forming die and an electric moped lower fork pipe, the forming die is used for performing multi-step forming processing on parts, the forming die comprises an upper die and a lower die, a plurality of first cavities are formed in the lower surface of the upper die and are arranged in parallel, the lower die is arranged below the upper die, and the first cavities are arranged on the lower surface of the upper die. The upper surface of the lower die and the lower surface of the upper die are oppositely arranged, second cavities are formed in the upper surface of the lower die, the second cavities correspond to the first cavities one to one, a plurality of cavities are formed when the upper die and the lower die are assembled, the cavities correspond to the steps one to one, and the forming die achieves multi-step forming of parts through one set of die. The lower fork pipe of the electric moped is machined and formed through the forming die, and the production efficiency of the electric moped is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a forming die and a lower fork tube of an electric power-assisted bicycle. Background Art

[0002] Electric assisted bicycles are a new type of transportation that integrates human riding and electric assistance, and are widely loved by people. The frame of an electric assisted bicycle is mainly composed of some pipe fittings. The pipe fittings are made by applying pressure to the pipe by a mold installed on a press, causing the pipe to undergo plastic deformation, thereby obtaining parts of the desired shape.

[0003] The lower fork tube of an electric bicycle has a complex structure, with a variety of cross-sectional shapes and multiple large bending angles. However, the existing tube forming molds are basically used for forming tubes of a single shape, and multiple molds are required for processing and forming. This not only increases the processing steps, but also easily causes bumps and scratches on the parts during the turnover process, affecting production efficiency. Therefore, a forming mold is urgently needed to achieve the formation of the lower fork tube of an electric bicycle with just one mold. Utility Model Content

[0004] The utility model aims to provide a forming die, so as to realize multi-step forming of parts by only one set of die.

[0005] Another object of the utility model is to provide a lower fork tube of an electric power-assisted bicycle, which is processed and formed by the above-mentioned forming mold to improve the production efficiency of the electric power-assisted bicycle.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Forming dies, used for multi-step forming of parts, include:

[0008] An upper mold, wherein a plurality of first cavities are formed on a lower surface of the upper mold, and the plurality of first cavities are arranged in parallel;

[0009] A lower mold, wherein the lower mold is arranged below the upper mold, and the upper surface of the lower mold is arranged opposite to the lower surface of the upper mold, the upper surface of the lower mold is provided with a second cavity, the second cavity is arranged in a one-to-one correspondence with the first cavity, and a plurality of cavities are formed when the upper mold and the lower mold are combined, and the cavities correspond to the process steps one-to-one.

[0010] Furthermore, the molding die also includes a limiting component, which is arranged at one end of the lower die, and the limiting component is used to limit the blank in the corresponding second cavity.

[0011] Furthermore, the limiting component includes:

[0012] A plurality of fixing blocks, wherein the plurality of fixing blocks are fixedly disposed at one end of the plurality of second cavities in a one-to-one correspondence;

[0013] A plurality of connecting rods, the plurality of connecting rods corresponding to the plurality of fixing blocks one by one, and one end of the connecting rod being connected to the fixing block;

[0014] A plurality of positioning blocks, each of the plurality of positioning blocks corresponds to each of the plurality of connecting rods. The positioning blocks are arranged in the second cavity and do not exceed the upper surface of the lower mold. The positioning blocks are fixedly connected to the other end of the connecting rod.

[0015] Furthermore, the position of the connecting rod on the fixing block is adjustable.

[0016] Furthermore, the upper mold includes an upper mold fixing plate and an upper mold body, the upper mold body is fixedly arranged on the upper mold fixing plate, and the plurality of first cavities are arranged on the lower surface of the upper mold body.

[0017] Furthermore, the upper mold body includes a first upper mold body, a second upper mold body and a third upper mold body, and the lower surfaces of the first upper mold body, the second upper mold body and the third upper mold body respectively open a first mold cavity.

[0018] Furthermore, the lower mold includes a lower mold fixing plate and a lower mold body, the lower mold body is fixedly arranged on the lower mold fixing plate, and a plurality of the second cavities are arranged on the upper surface of the lower mold body.

[0019] Furthermore, the lower mold body includes a first lower mold body, a second lower mold body and a third lower mold body, and the lower surfaces of the first lower mold body, the second lower mold body and the third lower mold body respectively open a second mold cavity.

[0020] Furthermore, the molding mold also includes a plurality of guide members, which are fixedly arranged on the lower mold, and the lower surface of the upper mold is provided with a plurality of guide holes corresponding to the plurality of guide members one by one. When the upper mold and the lower mold are closed, the plurality of guide members are correspondingly inserted into the plurality of guide holes.

[0021] The lower fork tube of the electric power-assisted bicycle is formed by the molding die described in any of the above schemes.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a molding die for performing multi-step molding processing on paired parts, comprising an upper die and a lower die, wherein a plurality of first cavities are provided on the lower surface of the upper die, and the plurality of first cavities are arranged in parallel, the lower die is arranged below the upper die, and the upper surface of the lower die is arranged relative to the lower surface of the upper die, a second cavity is provided on the upper surface of the lower die, and the second cavity is arranged one-to-one with the first cavity, and a plurality of cavities are formed when the upper die and the lower die are molded together, and the cavities correspond one-to-one with the steps. The molding die realizes that a pair of molds can complete the multi-step molding of parts.

[0024] The lower fork tube of the electric power-assisted bicycle provided by the utility model is processed and formed by the above-mentioned forming die, thereby improving the production efficiency of the electric power-assisted bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the molding die provided by the embodiment of the utility model;

[0026] Figure 2 It is a schematic diagram of the mold-closing structure of the upper mold and the lower mold provided by the embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the upper mold structure provided by an embodiment of the utility model.

[0028] In the figure:

[0029] 1. Upper mold; 11. Upper mold fixing plate; 12. Upper mold body; 121. First upper mold body; 122. Second upper mold body; 123. Third upper mold body; 13. First cavity; 14. Guide hole;

[0030] 2. lower mold; 21. lower mold fixing plate; 22. lower mold body; 221. first lower mold body; 222. second lower mold body; 223. third lower mold body; 23. second cavity;

[0031] 3. Limiting assembly; 31. Fixing block; 32. Connecting rod; 33. Positioning block;

[0032] 4. Guide parts;

[0033] 5. Mold handle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Combine the following Figure 1-3 The technical solution of the utility model is further illustrated by specific implementation methods.

[0042] The lower fork tube of an electric assisted bicycle has a complex structure, with various cross-sections and multiple large bending angles. However, the existing pipe forming molds are basically used for forming pipes of a single shape. The lower fork tube of an electric assisted bicycle requires multiple molds for processing, which makes forming more difficult. Not only does it increase the processing steps, but the turnover process is also very likely to cause bumps and scratches on the parts, affecting production efficiency.

[0043] In order to solve the above problems, an embodiment of the utility model provides a lower fork tube of an electric power-assisted bicycle. The lower fork tube of the electric power-assisted bicycle is processed and formed by a pair of forming molds, thereby ensuring product quality and improving the production efficiency of the electric power-assisted bicycle.

[0044] Specifically, Figure 1-2 As shown, the molding mold provided in this embodiment includes an upper mold 1 and a lower mold 2. The lower surface of the upper mold 1 is provided with a plurality of first cavities 13, and the plurality of first cavities 13 are arranged in parallel. The lower mold 2 is arranged below the upper mold 1, and the upper surface of the lower mold 2 is arranged relative to the lower surface of the upper mold 1. The upper surface of the lower mold 2 is provided with a second cavity 23, and the second cavity 23 is arranged one-to-one with the first cavity 13. When the upper mold 1 and the lower mold 2 are combined, a plurality of cavities are formed, and the cavities correspond one-to-one with the part processing steps.

[0045] In detail, when forming the lower fork tube of the electric power-assisted bicycle, the forming mold is first installed on the stamping equipment, and the blank pipe fittings are placed in the second cavity 23 corresponding to the lower mold 2 in sequence. The upper mold 1 moves downward and combines with the lower mold 2 to form multiple cavities. The blank pipe fittings complete the corresponding steps of forming in the multiple cavities in sequence, thereby completing the final forming of the lower fork tube of the electric power-assisted bicycle, and realizing that a pair of molds can complete the multi-step forming of the lower fork tube of the electric power-assisted bicycle.

[0046] Preferably, the shapes of the first cavity 13 and the second cavity 23 match the size of the pipe fitting. In this embodiment, the first cavity 13 and the second cavity 23 are processed by a CNC machine tool (Computer Numerical Control, CNC), which can meet the processing accuracy of complex shapes such as various complex curved surfaces and improve product quality.

[0047] In order to better ensure the molding quality of the lower fork tube, the molding mold in this embodiment also includes a limiting component 3, which is arranged at one end of the lower mold 2. During molding, the blank pipe fitting can be limited in the corresponding second cavity 23, thereby ensuring the molding size of the pipe fitting and further ensuring the quality of the pipe fitting.

[0048] Furthermore, the limiting assembly 3 includes multiple fixed blocks 31, multiple connecting rods 32 and multiple positioning blocks 33. The multiple fixed blocks 31 are fixedly arranged at one end of the second cavity 23 in a one-to-one manner. The multiple connecting rods 32 are arranged in a one-to-one manner with the multiple fixed blocks 31. One end of the connecting rod 32 is connected to the fixed block 31. The multiple positioning blocks 33 are arranged in a one-to-one manner with the multiple connecting rods 32. The positioning block 33 is arranged in the second cavity 23 and does not exceed the upper surface of the lower mold 2. The positioning block 33 is fixedly arranged with the other end of the connecting rod 32. During molding, one end of the blank pipe fitting is abutted against the positioning block 33 to prevent the pipe fitting from extending out of the second cavity 23 and affecting the molding size of the pipe fitting.

[0049] Preferably, a connecting hole is provided on the fixing block 31, and the connecting rod 32 is passed through the connecting hole to limit the positioning block 33 in the second cavity 23. By adjusting the length of the connecting rod 32 passed through the fixing block 31, the position of the positioning block 33 in the second cavity 23 can be adjusted, which can facilitate the adjustment of the forming size of the pipe fitting.

[0050] In order to facilitate the processing and installation of the upper mold 1, the upper mold 1 includes an upper mold fixing plate 11 and an upper mold body 12. A plurality of connecting holes are respectively provided on the upper mold fixing plate 11 and the upper mold body 12. The upper mold body 12 is fixed on the upper mold fixing plate 11 through the plurality of connecting holes. A plurality of first cavities 13 are provided on the lower surface of the upper mold body 12. The upper mold fixing plate 11 and the upper mold body 12 can be processed and formed separately, which is convenient for processing and maintenance.

[0051] Furthermore, in order to facilitate the maintenance and replacement of the upper mold body 12, the multiple first cavities 13 on the upper mold body 12 are separately provided, that is, the upper mold body 12 is provided as a split body. In this embodiment, the upper mold body 12 includes a first upper mold body 121, a second upper mold body 122 and a third upper mold body 123. The lower surfaces of the first upper mold body 121, the second upper mold body 122 and the third upper mold body 123 are respectively provided with a first cavity 13. When the first cavity 13 is damaged, the corresponding upper mold body 12 can be replaced.

[0052] In order to facilitate the processing and installation of the lower mold 2, the lower mold 2 includes a lower mold fixing plate 21 and a lower mold body 22. The lower mold body 22 is fixed on the lower mold fixing plate 21, and multiple second cavities 23 are arranged on the upper surface of the lower mold body 22. The lower mold fixing plate 21 and the lower mold body 22 can be processed and formed separately, which is convenient for processing and maintenance.

[0053] Furthermore, in order to facilitate the maintenance and replacement of the lower mold body 22, the multiple second cavities 23 on the lower mold body 22 are separately provided, that is, the lower mold body 22 is provided as a split body. In this embodiment, the lower mold body 22 includes a first lower mold body 221, a second lower mold body 222 and a third lower mold body 223. The upper surfaces of the first lower mold body 221, the second lower mold body 222 and the third lower mold body 223 are respectively provided with a second cavity 23. When the second cavity 23 is damaged, the corresponding lower mold body 22 can be replaced.

[0054] In detail, when the upper mold 1 is closed with the lower mold 2, a first cavity is formed between the first upper mold body 121 and the first lower mold body 221, a second cavity is formed between the second upper mold body 122 and the second lower mold body 222, and a third cavity is formed between the third upper mold body 123 and the third lower mold body 223, and the forming of the corresponding steps of the blank pipe fitting is completed in the first cavity, the second cavity and the third cavity in sequence.

[0055] refer to Figure 1 and Figure 3 In this embodiment, the molding mold further includes a plurality of guide members 4, which are arranged on the lower mold 2. The guide members 4 are used to automatically align the upper mold 1 and the lower mold 2. The lower surface of the upper mold 1 is provided with a plurality of guide holes 14 corresponding to the plurality of guide members 4. When the pipe fitting is formed, the upper mold 1 moves downward to close the mold with the lower mold 2. The plurality of guide members 4 are correspondingly penetrated into the plurality of guide holes 14, so that the first cavity 13 and the second cavity 23 arranged opposite to each other are accurately aligned, further ensuring the product quality.

[0056] like Figure 2 As shown, the forming mold in this embodiment further includes a mold handle 5, which is fixedly connected to the upper surface of the upper mold 1. The upper mold 1 can be installed on the stamping equipment through the mold handle 5.

[0057] The following describes in detail the process of processing the lower fork tube of the electric power-assisted bicycle in this embodiment:

[0058] First, the upper mold fixing plate 11 and the upper mold body 12, the lower mold fixing plate 21 and the lower mold body 22 are fixedly connected respectively, and the connected upper mold 1 and the lower mold 2 are respectively installed on the stamping equipment, and the equipment is started. The upper mold 1 moves downward to close the mold with the lower mold 2, and the guide part 4 is correspondingly penetrated into the guide hole 14, and the molding mold is installed in place.

[0059] Secondly, the limiting assembly 3 is installed at one end of the lower mold 2, and the position of the positioning block 33 in the second mold cavity 23 is adjusted according to the size of the molded pipe.

[0060] Finally, the product is formed. The round tube blank to be formed is placed in the second cavity 23 on the first lower mold body 221, so that one end of the round tube blank abuts on the positioning block 33, the upper mold 1 and the lower mold 2 are molded together, and the blank is pre-bent in the first cavity; then the pre-bent blank tube is placed in the second cavity 23 on the second lower mold body 222, so that one end of the pre-bent blank tube abuts on the positioning block 33, the upper mold 1 and the lower mold 2 are molded together, and the blank tube is flattened and formed in the second cavity to obtain the pre-formed cross section of the lower fork tube of the electric power-assisted bicycle; finally, the tube with the pre-formed cross section is placed in the second cavity 23 on the third lower mold body 223, so that one end of the tube with the pre-formed cross section abuts on the positioning block 33, and the lower fork tube of the electric power-assisted bicycle is finally formed in the third cavity. The multi-step forming of the lower fork tube of the electric power-assisted bicycle is achieved by three mold closings of a pair of molds, which ensures product quality and improves production efficiency.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A forming mold is used to perform multi-step forming processing on parts, characterized in that: include: An upper mold (1), wherein a plurality of first mold cavities (13) are formed on a lower surface of the upper mold (1), and the plurality of first mold cavities (13) are arranged in parallel; A lower mold (2), wherein the lower mold (2) is arranged below the upper mold (1), and the upper surface of the lower mold (2) is arranged opposite to the lower surface of the upper mold (1), and a second cavity (23) is opened on the upper surface of the lower mold (2), and the second cavity (23) is arranged in a one-to-one correspondence with the first cavity (13), and a plurality of cavities are formed when the upper mold (1) and the lower mold (2) are combined, and the cavities correspond to the process steps one-to-one.

2. The molding die according to claim 1, characterized in that: The molding die further comprises a limiting component (3), wherein the limiting component (3) is arranged at one end of the lower die (2), and the limiting component (3) is used to limit the blank in the corresponding second cavity (23).

3. The molding die according to claim 2, characterized in that: The limiting component (3) comprises: A plurality of fixing blocks (31), wherein the plurality of fixing blocks (31) are fixedly disposed at one end of the plurality of second cavities (23) in a one-to-one correspondence; A plurality of connecting rods (32), wherein the plurality of connecting rods (32) correspond one-to-one to the plurality of fixing blocks (31), and one end of the connecting rod (32) is connected to the fixing block (31); A plurality of positioning blocks (33), the plurality of positioning blocks (33) corresponding one to one with the plurality of connecting rods (32), the positioning blocks (33) being arranged in the second cavity (23) and not exceeding the upper surface of the lower mold (2), the positioning blocks (33) being fixedly connected to the other end of the connecting rod (32).

4. The molding die according to claim 3, characterized in that: The position of the connecting rod (32) on the fixing block (31) is adjustable.

5. The molding die according to claim 1, characterized in that: The upper mold (1) comprises an upper mold fixing plate (11) and an upper mold body (12); the upper mold body (12) is fixedly arranged on the upper mold fixing plate (11); and a plurality of the first cavities (13) are arranged on the lower surface of the upper mold body (12).

6. The molding die according to claim 5, characterized in that: The upper mold body (12) comprises a first upper mold body (121), a second upper mold body (122) and a third upper mold body (123), and a first mold cavity (13) is respectively formed on the lower surface of the first upper mold body (121), the second upper mold body (122) and the third upper mold body (123).

7. The molding die according to claim 1, characterized in that: The lower mold (2) comprises a lower mold fixing plate (21) and a lower mold body (22); the lower mold body (22) is fixedly arranged on the lower mold fixing plate (21); and a plurality of the second mold cavities (23) are arranged on the upper surface of the lower mold body (22).

8. The molding die according to claim 7, characterized in that: The lower mold body (22) comprises a first lower mold body (221), a second lower mold body (222) and a third lower mold body (223), and a second mold cavity (23) is respectively formed on the lower surface of the first lower mold body (221), the second lower mold body (222) and the third lower mold body (223).

9. The molding die according to any one of claims 1 to 8, characterized in that: The molding die further comprises a plurality of guide members (4), wherein the plurality of guide members (4) are fixedly arranged on the lower die (2), and a plurality of guide holes (14) corresponding to the plurality of guide members (4) are arranged on the lower surface of the upper die (1), and when the upper die (1) and the lower die (2) are closed, the plurality of guide members (4) are correspondingly inserted into the plurality of guide holes (14).

10. The lower fork tube of an electric power-assisted bicycle is characterized in that: The product is formed by the forming mold described in any one of claims 1 to 9.

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