A forming die for knife tube

Abstract

The present invention discloses a forming die for a knife tube, comprising: a first die, the first die is used to trim a blank into a processed sheet; a second die, the second die comprises a plurality of second sub-dies for gradually flanging the processed sheet to form a pipe fitting, each of the second sub-dies comprises a fixing portion for fixing one end of the processed sheet, and a forming portion for rotating the other end of the processed sheet around the fixing portion to form the pipe fitting; a third die, the third die is used to form the pipe fitting into a target tubular shape; a fourth die, the fourth die is used to stamp at both ends of the target tubular shape to form a knife tube with preset ends; a fifth die, the fifth die is used to separate the knife tube from waste. By using the forming die, the stamping forming of the knife tube can be realized, and the processing efficiency of the knife tube can be improved.

Description

Technical Field

[0001] The invention relates to the field of ice skate processing, and in particular to a forming die for a blade tube. Background Art

[0002] The skate is a steel blade mounted on the bottom of the skate. The ice that the skate contacts melts into water, which reduces the friction between the skate and the ice, making it easier for the skate to slide. A blade tube is connected to the bottom of the skate. In the existing technology, the blade tube is processed by a stretching process, which has low work efficiency and cannot guarantee product quality. Summary of the invention

[0003] The object of the present invention is to provide a forming die for a knife tube, by using the forming die, the knife tube can be stamped and formed, thereby improving the processing efficiency of the knife tube.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a forming die for a knife tube, comprising:

[0005] a first die, the first die being used to trim the blank into a processed sheet;

[0006] A second mold, the second mold comprising a plurality of second sub-molds for gradually flanging the processed sheet to form a tube, each of the second sub-molds comprising a fixing portion for fixing one end of the processed sheet, and a forming portion for rotating the other end of the processed sheet around the fixing portion to form the tube;

[0007] A third mold, the third mold is used to shape the pipe into a target pipe shape;

[0008] A fourth die, the fourth die being used for punching a knife tube having preset ends at both ends of the target tubular shape;

[0009] A fifth mold is used to separate the knife tube from waste materials.

[0010] In the above technical solution, the fixing portion includes a first fixing surface provided on the upper mold block, and a second fixing surface provided on the lower mold block to abut against the first fixing surface.

[0011] In the above technical solution, the first fixing surface and the second fixing surface are arranged in a vertical direction, and when the upper mold and the lower mold are closed, one end of the processed sheet is fixed between the first fixing surface and the second fixing surface.

[0012] In the above technical solution, the molding portion includes a first molding surface arranged on the upper molding block, and a second molding surface pressed with the first molding surface and arranged on the lower molding block.

[0013] In the above technical solution, the first molding surface includes an abutting portion abutting against the first surface of the processed sheet, and the second molding surface is opposite to the second surface of the processed sheet, so that the processed sheet is flanged so that the first surface is located on the inner side of the pipe.

[0014] In the above technical solution, the first molding surfaces in the plurality of second part molds are inclined downward from an end facing the first fixed surface to an end facing away from the first fixed surface in the processing sequence.

[0015] In the above technical solution, the third mold includes a core inserting mechanism opposite to the middle part of the tube and first pressing blocks arranged on both sides of the core inserting mechanism along the vertical direction.

[0016] In the above technical solution, the core insertion mechanism includes a driving cylinder, a core insertion member connected to the driving cylinder, and a core insertion seat for limiting the moving direction of the core insertion member, and the core insertion member can be inserted into the pipe under the drive of the driving cylinder.

[0017] In the above technical solution, the fourth mold includes an end pressing block for forming the preset end.

[0018] In the above technical solution, the fifth mold includes a punching block, and a cavity matching the knife tube is provided in the punching block.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] 1. The second mold in the present invention includes a plurality of second sub-molds for gradually flanging the processed sheet to form a pipe fitting, and each second sub-mold includes a fixing portion for fixing one end of the processed sheet, and a forming portion for rotating the other end of the processed sheet around the fixing portion to form a pipe fitting. By fixing one end and gradually flanging the other end, the processing quality of the product is guaranteed and the processing efficiency is improved.

[0021] 2. The first molding surface includes an abutting portion that abuts against the first surface of the processed sheet, and the second molding surface is opposite to the second surface of the processed sheet, so that the second molding surface acts on the outside of the processed sheet to fold the processed sheet around the first molding surface. The structure is simple and the processing is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of the molding die in the present invention;

[0023] Figure 2 It is a cross-sectional view of the upper mold in the present invention;

[0024] Figure 3 It is a schematic diagram of the lower mold in the present invention;

[0025] Figure 4 yes Figure 1 A partial enlarged view of the middle part;

[0026] Figure 5 It is a schematic diagram of the core inserting mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the knife tube forming process in the present invention.

[0028] Among them: 1. first mold; 2. second mold; 21. first fixed surface; 22. second fixed surface; 23. first molding surface; 24. second molding surface; 25. abutment portion; 3. third mold; 31. core inserting mechanism; 32. driving cylinder; 33. core inserting member; 34. core inserting seat; 4. fourth mold; 5. fifth mold; 51. cavity; 6. blank; 61. processed sheet; 62. pipe fitting; 63. target tubular shape; 64. preset end; 65. knife tube. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0030] Example 1: See Figures 1 to 6 As shown, a forming die for a knife tube comprises:

[0031] A first mold 1, wherein the first mold 1 is used to trim the blank 6 into a processed sheet 61;

[0032] A second mold 2, the second mold 2 includes a plurality of second sub-molds for gradually flanging the processed sheet 61 to form a tube 62, each of the second sub-molds includes a fixing portion for fixing one end of the processed sheet 61, and a forming portion for rotating the other end of the processed sheet 61 around the fixing portion to form the tube 62;

[0033] A third mold 3, wherein the third mold 3 is used to mold the tube 62 into a target tube shape 63;

[0034] A fourth die 4, the fourth die 4 is used for punching a knife tube 65 having a preset end portion 64 at both ends of the target tubular shape 63;

[0035] The fifth mold 5 is used to separate the knife tube 65 from the waste material.

[0036] By using a forming die, the processed sheet 61 is punched into a knife tube 65, thereby ensuring product quality and improving processing efficiency.

[0037] See also Figure 1 As shown, the fixing portion includes a first fixing surface 21 disposed on the upper mold block, and a second fixing surface 22 disposed on the lower mold block in contact with the first fixing surface 21 .

[0038] In a preferred embodiment, the first fixing surface 21 and the second fixing surface 22 are arranged in a vertical direction, and when the upper mold and the lower mold are closed, one end of the processed sheet 61 is fixed between the first fixing surface 21 and the second fixing surface 22. Figure 4 It is a schematic diagram of the cooperation between the upper mold block and the lower mold block in one of the second sub-molds.

[0039] See also Figure 4 As shown, the molding portion includes a first molding surface 23 disposed on the upper molding block, and a second molding surface 24 pressed with the first molding surface 23 and disposed on the lower molding block.

[0040] In order to ensure the quality of the product, the first molding surface 23 includes an abutment portion 25 that abuts against the first surface of the processed sheet 61, and the second molding surface 24 is opposite to the second surface of the processed sheet 61, so that the processed sheet 61 is flanged so that the first surface is located on the inner side of the pipe 62.

[0041] See also Figure 1 As shown, the first molding surfaces 23 in the plurality of second split molds are inclined downward from one end facing the first fixed surface 21 to one end away from the first fixed surface 21 in the processing sequence. The second molding surface 24 changes with the first molding surface 23 opposite thereto.

[0042] See also Figure 5 As shown, the third mold 3 includes a core inserting mechanism 31 opposite to the middle of the tube 62 and first pressing blocks arranged on both sides of the core inserting mechanism 31 in the vertical direction. The core inserting mechanism 31 includes a driving cylinder 32, a core inserting member 33 connected to the driving cylinder 32, and a core inserting seat 34 for limiting the moving direction of the core inserting member 33. The core inserting member 33 can be inserted into the tube 62 under the drive of the driving cylinder 32.

[0043] The fourth mold 4 includes an end pressing block for forming the preset end 64 .

[0044] See also Figure 4 As shown, the fifth mold 5 includes a punching block, and a cavity 51 matching with the knife tube 65 is provided in the punching block.

[0045] The process of forming the knife tube using the forming die specifically includes:

[0046] Trimming both sides of the blank 6 fed into the first die 1 to form a processed sheet 61;

[0047] The processed sheet 61 is fed into the second mold 2, and one end of the processed sheet 61 is fixed by using a plurality of second sub-molds arranged in succession, and the other end is rolled from the outside to the inside around the fixed end, and during the rolling process, the first molding surface 23 abuts against the inner side thereof;

[0048] After being rolled up by the second die 2 to form a tube 62, it is sent into the third die 3;

[0049] In the third mold 3, the core inserting member 33 of the core inserting mechanism 31 is inserted into the interior of the tube 62, and the exterior thereof is pressed by the first pressing block, so that the tube 62 is attached to the surface of the core inserting member 33, forming the target tube 63;

[0050] The target tubular shape 63 is fed into the fourth mold 4, and the end blocks in the fourth mold 4 are used to form preset end portions 64 at both ends of the target tubular shape 63;

[0051] Finally, the knife tube 65 is separated from the waste material by punching through the fifth die 5 .

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming die for a knife tube, characterized in that: include: a first die, the first die being used to trim the blank into a processed sheet; The second mold comprises a plurality of second sub-molds for gradually flanging the processed sheet to form a pipe fitting, each of the second sub-molds comprises a fixing portion for fixing one end of the processed sheet, and a forming portion for rotating the other end of the processed sheet around the fixing portion to form the pipe fitting; the fixing portion comprises a first fixing surface arranged on the upper mold block, and a second fixing surface abutting against the first fixing surface and arranged on the lower mold block, the first fixing surface and the second fixing surface are arranged in a vertical direction, and when the upper mold and the lower mold are closed, the first fixing surface and the second fixing surface are in contact with each other. The molding part includes a first molding surface provided on the upper mold block, and a second molding surface provided on the lower mold block and pressed with the first molding surface, the first molding surface includes an abutting portion abutting against the first surface of the machining material, and the second molding surface is opposite to the second surface of the machining material, so that the machining material is flanged so that the first surface is located inside the pipe fitting, and the first molding surfaces of the plurality of second split molds are inclined downward from one end facing the first fixed surface to one end away from the first fixed surface in a machining sequence; A third mold, the third mold is used to shape the pipe into a target pipe shape; A fourth die, the fourth die being used for punching a knife tube having preset ends at both ends of the target tubular shape; A fifth mold is used to separate the knife tube from waste materials.

2. The forming die for the knife tube according to claim 1, characterized in that: The third mold includes a core inserting mechanism opposite to the middle portion of the tube and first pressing blocks arranged on both sides of the core inserting mechanism along a vertical direction.

3. The forming die for the knife tube according to claim 2, characterized in that: The core inserting mechanism comprises a driving cylinder, a core inserting member connected to the driving cylinder, and a core inserting seat for limiting the moving direction of the core inserting member. The core inserting member can be inserted into the pipe member under the drive of the driving cylinder.

4. The forming die for the knife tube according to claim 1, characterized in that: The fourth mold includes an end pressing block for forming the preset end.

5. The forming die for the knife tube according to claim 1, characterized in that: The fifth mold includes a punching block, and a cavity matching the knife tube is arranged in the punching block.

Images