A mold for forming a spiral elastic bar and its forming method

Abstract

This invention provides a forming mold and method for a spiral spring. In use, the distance between the first and second roller seats on the first lower mold plate is adjusted to a set length. A long strip of raw material is fed into the first lower mold plate through a first limiting frame, facilitating the first upper mold plate to drive the first pressure head downwards, thus forming the first half-formed part. The second half-formed part is formed similarly. The second half-formed part, with its curved ends, is then mounted on the second upper mold plate using a second limiting frame. With the cooperation of two single-sided roller seats and a lower support plate, the third half-formed part is formed. The third half-formed part is then placed in the forming cavity on the third lower mold plate, and the two oblique wedge-shaped pressure blocks on the bottom side of the third pressure head press down to complete the formation of the spiral spring. This invention, through the cooperation of the first, second, and third forming molds, can conveniently and efficiently complete the forming process of a spiral spring, making it easy to promote and use.

Description

Technical Field

[0001] This invention belongs to the field of molding die technology, specifically relating to a spiral spring molding die and its molding method. Background Technology

[0002] The elastic clip is one of the important components of railway rail fasteners. It mainly generates fastening pressure on the rail through bending and torsional deformation to ensure that the rail does not have longitudinal and lateral displacement, ensure the normal track gauge, and thus ensure the safety of train operation.

[0003] There are many types of spring clips, such as the spiral spring clip, but its molding process is complicated, requires multiple steps, and has a low yield rate.

[0004] Based on this, a spiral spring forming mold and its forming method are proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a spiral spring forming mold and its forming method to address the shortcomings of the prior art, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a spiral spring forming mold, comprising a first forming mold, a second forming mold and a third forming mold arranged sequentially on a worktable;

[0007] The first forming mold consists of a first upper template and a first lower template. Two first roller seats are symmetrically installed on the first lower template. A second roller seat is installed on the outside of each first roller seat on the first lower template. Two first pressure heads are installed under the first upper template. The first pressure heads cooperate with the first roller seats and the second roller seats.

[0008] The second forming mold consists of a second upper mold and a first lower mold. A lower support plate is installed in the middle of the second lower mold. Single-sided roller seats are installed on both sides of the lower support plate on the second lower mold. A second pressure head is installed on the bottom side of the second upper mold.

[0009] The third forming mold consists of a third upper template and a third lower template. A third pressure head is installed under the third upper template, and two pressure blocks are installed on the bottom side of the third pressure head. A forming cavity is provided on the third lower template.

[0010] Furthermore, a first limiting frame is provided on the outer side of the second roller seat, and a material ejection plate is provided on the first roller seat.

[0011] Furthermore, a first roller is installed on the opposite side of the single-sided roller seat near the top, and second rollers are installed on both sides of the bottom end of the second pressure head.

[0012] Furthermore, a second limiting frame is also installed on the second lower template above the single-sided roller seat.

[0013] Furthermore, the pressing block is specifically a wedge-shaped pressing block.

[0014] A method for forming a spiral spring strip mold includes the following steps:

[0015] S1. Adjust the distance between the first roller seat and the second roller seat on the first lower template to the set length. Send the long strip of raw material into the first roller seat and the second roller seat on one side of the first lower template through the first limiting frame. This will allow the first upper template to drive the first pressure head to press down and complete the forming of the first half-formed part. Similarly, the first roller seat and the second roller seat on the other side of the first lower template, along with the first pressure head, will be used to complete the forming of the second half-formed part.

[0016] S2. The second half-molded part with curved ends is installed on the second upper template using the second limiting frame. The second pressure head is adjusted to the middle of the second half-molded part. Then, the second pressure head is used to press down. With the cooperation of the two single-sided roller seats and the lower support plate, the third half-molded part is formed.

[0017] S3. Then place the third half of the molded part into the molding cavity on the third lower template. Use the third upper template to press down to drive the third pressure head to press down. The two oblique wedge-shaped pressure blocks on the bottom side of the third pressure head press down to complete the forming of the spiral spring strip.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention, through the cooperation of a first forming mold, a second forming mold, and a third forming mold, can conveniently and efficiently complete the forming process of the spiral spring, making it easy to promote and use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first molding die of the present invention;

[0021] Figure 2 This is a front view of the first molding die of the present invention;

[0022] Figure 3 This is a schematic diagram of the second molding die of the present invention;

[0023] Figure 4 This is a schematic diagram of the second molding die of the present invention;

[0024] Figure 5 This is a schematic diagram of the third molding die of the present invention;

[0025] Figure 6 This is a schematic diagram of the third molding die of the present invention;

[0026] Figure 7 This is a schematic diagram of the molding cavity of the third molding die of the present invention;

[0027] Figure 8 This is a schematic diagram of the spiral elastic bar structure of the present invention;

[0028] Figure 9 This is a front view of the spiral elastic bar structure of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-First forming mold; 11-First upper template; 12-First lower template; 13-First roller seat; 14-Second roller seat; 15-First pressure head; 16-First limiting frame; 2-Second forming mold; 21-Second upper template; 22-First lower template; 23-Lower support plate; 24-Single-sided roller seat; 25-First roller; 26-Second pressure head; 27-Second roller; 28-Second limiting frame; 3-Third forming mold; 31-Third upper template; 32-Third lower template; 33-Third pressure head; 34-Pressure block; 35-Forming cavity. Detailed Implementation

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figure 1-9 As shown, the present invention provides a technical solution: a spiral spring forming mold, comprising a first forming mold 1, a second forming mold 2 and a third forming mold 3 arranged sequentially on a worktable;

[0033] The first molding die 1 is composed of a first upper template 11 and a first lower template 12. Two first roller seats 13 are symmetrically installed on the first lower template 12. A second roller seat 14 is installed on the outside of each first roller seat 13. Two first pressure heads 15 are installed under the first upper template 11. The first pressure heads 15 cooperate with the first roller seats 13 and the second roller seats 14.

[0034] The second roller seat 14 is provided with a first limiting frame 16 on its outer side, and the first roller seat 13 is provided with a material ejector plate 17;

[0035] The second forming mold 2 is composed of a second upper mold plate 21 and a first lower mold plate 22. A lower support plate 23 is installed in the middle of the second lower mold plate 21. Single-sided roller seats 24 are installed on both sides of the lower support plate 23 on the second lower mold plate 22. A second pressure head 26 is installed on the bottom side of the second upper mold plate 21.

[0036] The single-sided roller seat 24 is equipped with a first roller 25 near the top on the opposite side, and the second roller 27 is installed on both sides of the bottom end of the second pressure head 26. A second limiting frame 28 is also installed on the second lower template 21 above the single-sided roller seat 24.

[0037] The third forming mold 3 is composed of a third upper template 31 and a third lower template 32. A third pressure head 33 is installed under the third upper template 31. Two pressure blocks 34 are installed on the bottom side of the third pressure head 33. A forming cavity 35 is provided on the third lower template 32.

[0038] The pressing block 34 is specifically a wedge-shaped pressing block.

[0039] A method for forming a spiral spring strip mold includes the following steps:

[0040] S1. Adjust the distance between the first roller seat 13 and the second roller seat 14 on the first lower template 12 to the set length. Send the long strip of raw material into the first roller seat 13 and the second roller seat 14 on one side of the first lower template 12 through the first limiting frame 16. This will facilitate the first upper template 11 to drive the first pressure head 15 to press down. Press down to complete the forming of the first half-formed part 41. Similarly, the first roller seat 13 and the second roller seat 14 on the other side of the first lower template 12 and the first pressure head 15 are used to complete the forming of the second half-formed part 42.

[0041] S2. The second half-molded part 42 with bent ends after molding is installed on the second upper template 21 using the second limiting frame 28. The second pressure head 26 is adjusted to the middle of the second half-molded part 42. Then, the second pressure head 26 is used to press down. With the cooperation of the two single-sided roller seats 24 and the lower support plate 23, the molding of the third half-molded part 43 is completed.

[0042] S3. Then place the third half-formed part 43 into the forming cavity 35 on the third lower template 32. Use the third upper template 31 to press down and drive the third pressure head 33 to press down. The two oblique wedge-shaped pressure blocks 34 on the bottom side of the third pressure head 33 press down to complete the forming of the elastic bar 44.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A forming method for a spiral spring forming mold, characterized in that: The molding die includes a first molding die (1), a second molding die (2) and a third molding die (3) arranged sequentially on the worktable. The first forming mold (1) is composed of a first upper template (11) and a first lower template (12). Two first roller seats (13) are symmetrically installed on the first lower template (12). A second roller seat (14) is installed on the outside of each first roller seat (13) on the first lower template (12). Two first pressure heads (15) are installed under the first upper template (11). The first pressure heads (15) cooperate with the first roller seats (13) and the second roller seats (14). A first limiting frame (16) is provided on the outside of the second roller seat (14). A material ejection plate (17) is provided on the first roller seat (13). The second forming mold (2) is composed of a second upper template (21) and a second lower template (22). A lower support plate (23) is installed in the middle of the second lower template (22). Single-sided roller seats (24) are installed on both sides of the lower support plate (23) on the second lower template (22). A second pressure head (26) is installed on the bottom side of the second upper template (21). A second limiting frame (28) is also installed on the second lower template (22) above the single-sided roller seats (24). The third forming mold (3) is composed of a third upper template (31) and a third lower template (32). A third pressure head (33) is installed under the third upper template (31). Two pressure blocks (34) are installed on the bottom side of the third pressure head (33). The pressure blocks (34) are oblique wedge-shaped pressure blocks. A forming cavity (35) is provided on the third lower template (32). The molding method includes the following steps: S1. Adjust the distance between the first roller seat (13) and the second roller seat (14) on the first lower template (12) to the set length. Send the long strip of raw material through the first limiting frame (16) to the first roller seat (13) and the second roller seat (14) on one side of the first lower template (12). Use the first upper template (11) to drive the first pressure head (15) to press down. Press down to complete the forming of the first half-formed part (41) with one end bent. Similarly, use the cooperation of the first roller seat (13) and the second roller seat (14) on the other side of the first lower template (12) and the first pressure head (15) to complete the forming of the second half-formed part (42) with both ends bent. S2. The second half-molded part (42) with curved ends after molding is installed on the second upper template (21) using the second limiting frame (28). The second pressure head (26) is adjusted to the middle of the second half-molded part (42). Then, the second pressure head (26) is pressed down. With the cooperation of the two single-sided roller seats (24) and the lower support plate (23), the molding of the third half-molded part (43) is completed. S3. Then place the third half-formed part (43) into the forming cavity (35) on the third lower template (32), and use the third upper template (31) to press down to drive the third pressure head (33) to press down. The two oblique wedge-shaped pressure blocks (34) on the bottom side of the third pressure head (33) press down to complete the forming of the spiral elastic strip (44).

2. The forming method of the spring-shaped forming mold according to claim 1, characterized in that, The single-sided roller seat (24) has a first roller (25) installed on the opposite side near the top, and the second roller (27) is installed on both sides of the bottom end of the second pressure head (26).

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