Riveting head tool with long service life and chain riveting head device

Abstract

The utility model relates to the field of chain machining, and particularly discloses a rivet head tool with the characteristic of long service life and a chain rivet head device. The rivet head tool comprises a foundation block and a forming body, and one side face of the foundation block is a rivet head face. Two mounting holes are formed in the basic block, and the two mounting holes are distributed in parallel and are arranged parallel to the riveting head surface at the same time; the mounting hole is opened on the riveting head surface and forms a forming channel; the forming bodies are cylindrical, correspond to the mounting holes one to one and are movably arranged in the corresponding mounting holes in the circumferential direction. According to the rivet head tool, in the rivet head machining process, the forming body rotates along with the rivet head tool, the riveting contact point of the forming body is changed along with the forming body, the abrasion speed can be decreased, and the service life can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain processing field, concretely relates to a rivet tool and chain rivet device with long life characteristics. BACKGROUND

[0002] Chain drive is the common transmission form in mechanical field, has the advantages such as accurate transmission ratio, reliable work, large transmission power. Common chain is usually connected by multiple chain links in turn, and the adjacent two chain links are connected by a pin.

[0003] In order to guarantee the reliability of connection, after completing the stringing of inner chain link and outer chain link, the pin is usually riveted. The riveting process of chain at present is mainly operated by mould pressing mode, and the upper die and lower die are set, and the relative driving of upper die and lower die is realized by driving assembly, and then riveting operation is completed.

[0004] Because the driving force in riveting process is large, the stress borne by the corresponding die is also large, and the die is easy to wear, and once the die is worn, the riveting quality is difficult to guarantee. Therefore, the die needs to be replaced regularly, the maintenance period is short, and the use cost is high. SUMMARY

[0005] The utility model solves the technical problem to provide a rivet tool and chain rivet device with long life characteristics, in the riveting process, the forming body rotates along, and the riveting contact point of the forming body also changes, which can slow down the wear rate and improve the service life.

[0006] In order to solve the above technical problem, the utility model provides the technical scheme as follows: a rivet tool with long life characteristics, including base block and forming body, one side of the base block is rivet face, two installation holes are formed in the base block, and the two installation holes are distributed in parallel and are arranged in parallel with the rivet face, the installation hole is opened on the rivet face and forms a forming channel, the central angle of the opening corresponding to the forming channel is A, and 80° < A < 180°.

[0007] The forming body is cylindrical, and the forming body corresponds to the installation hole one by one and is circumferentially movably arranged in the corresponding installation hole.

[0008] In the riveting process, the forming body rotates along with the contact of the forming body and the pin, and the riveting stress point of the forming body changes in the next riveting. By rotating the riveting stress point, the wear rate of the forming body can be effectively slowed down, the service life is improved, the maintenance period is increased, and the use cost is reduced.

[0009] As preferred, the diameter of the installation hole is recorded as D, the diameter of the shaped body is recorded as d, and D-d=0.1±0.05mm. By controlling the gap between the shaped body and the installation hole, the smooth rotation of the shaped body can be ensured under the premise of effective limiting.

[0010] As preferred, the shaped body is processed by tungsten steel.

[0011] As preferred, a rivet head groove is arranged on the rivet head face, the rivet head groove is located between the two installation holes and extends in parallel with the axial direction of the installation hole; and the shaped channel at least partially extends into the rivet head groove.

[0012] The arrangement of the rivet head groove can provide sufficient space for the movement of the pin relative to the base block during the riveting process, and can also provide space for the lateral exposure of the shaped body to ensure the smooth riveting and improve the specification application range of the processed pin.

[0013] As preferred, the central angle corresponding to the shaped channel and the rivet head groove is recorded as B, and B=70°±20°, and A=110°±20°.

[0014] As preferred, the shaped channels of the two installation holes are distributed symmetrically left and right.

[0015] A chain riveting device with long service life characteristics, comprising an upper die, a lower die, and a driving assembly for driving the relative movement of the upper die and the lower die; at least one of the upper die and the lower die is connected with the riveting tool as described above.

[0016] As preferred, the upper die and the lower die are respectively connected with the riveting tool as described above; the rivet head faces in the riveting tools of the upper die and the lower die are oppositely arranged, and the shaped bodies in the riveting tools are symmetrically distributed upward and downward.

[0017] As preferred, the length of the shaped body is 0.3-0.5 times the length of the installation hole; and a displacement mechanism is further included, the displacement mechanism comprises an end-limiting unit corresponding to the shaped body one by one, and a displacement driving unit for driving the end-limiting unit to move along the axial direction of the installation hole; the end-limiting unit comprises two limiting blocks movably connected with the base block, and the shaped body is arranged between the two limiting blocks.

[0018] The displacement mechanism can drive the shaped body to move axially in the installation hole, so as to realize the axial movement switching of the riveting stress point. When the circumferential wear of a segment of the shaped body reaches a limit value, the segment can be switched to continue processing by axial movement to further improve the service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the riveting tool with long service life characteristics according to the first embodiment of the present application.

[0020] Figure 2 The first embodiment of the forming block in the rivet head tool with long service life characteristics is a front view;

[0021] Figure 3 The rivet head state of the first embodiment of the rivet head tool with long service life characteristics cooperates with the chain is a front view;

[0022] Figure 4 The second embodiment of the rivet head tool with long service life characteristics is a structural schematic view;

[0023] Figure 5 The second embodiment of the rivet head tool with long service life characteristics is a front view;

[0024] Figure 6 The first embodiment of the forming block in the rivet head tool with long service life characteristics is a front view;

[0025] Figure 7 The third embodiment of the chain rivet head device with long service life characteristics is a structural schematic view;

[0026] Figure 8 The third embodiment of the chain rivet head device with long service life characteristics is a front view. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model. Example one

[0028] As shown in Figures 1-3 A rivet head tool with long service life characteristics comprises a base block 1 and a forming body 2, one side of the base block 1 is a rivet head face 11. Two installation holes 12 are formed in the base block 1, the two installation holes 12 are distributed in parallel and are arranged parallel to the rivet head face 11. The installation hole 12 is opened on the rivet head face 11 and forms a forming channel 13, the central angle of the opening of the forming channel 13 is recorded as A, and then 80° < A < 180°, as a preferred embodiment, A = 110° ± 20°.

[0029] As shown in Figures 1-3As shown, the forming body 2 is cylindrical, and the forming body 2 corresponds to the mounting hole 12 one by one and is circumferentially movably arranged in the corresponding mounting hole 12. Specifically, the diameter of the mounting hole 12 is denoted as D, and the diameter of the forming body 2 is denoted as d, then D-d=0.1±0.05mm. By controlling the gap between the forming body 2 and the mounting hole 12, it can be ensured that the forming body 2 can smoothly rotate under the premise of effective limiting. As a preferred embodiment, the forming body 2 is processed by tungsten steel.

[0030] In the rivet processing process, accompanied by the contact of the forming body 2 with the pin in the chain 3, the forming body 2 will rotate with the motion in the mounting hole 12, and in the next riveting, the riveting stress point of the forming body 2 will change. By rotating to replace the riveting stress point, the wear rate of the forming body 2 can be effectively slowed down, thereby improving the service life, increasing the maintenance period, and reducing the use cost. Example two

[0031] Compared with example one, the difference of the present embodiment is that: Figures 4-6 As shown, the rivet groove 14 is formed on the rivet surface 11, the rivet groove 14 is located between the two mounting holes 12 and extends parallel to the axial direction of the mounting hole 12. The forming channel 13 extends at least partially into the rivet groove 14, and the forming channels 13 of the two mounting holes 12 are symmetrically distributed on the left and right. Specifically, the corresponding central angle of the forming channel 13 and the corresponding part of the rivet groove 14 is denoted as B, then B=70°±20°.

[0032] The arrangement of the rivet groove 14 can provide sufficient space for the movement of the pin relative to the base block 1 during riveting, and also provide space for the lateral exposure of the forming body 2, so as to ensure the smooth riveting and improve the specification application range of the processed pin. Example three

[0033] As shown in Figure 7 and Figure 8 A chain riveting device with long service life, comprising an upper die 4, a lower die 5 and a driving assembly for driving the relative movement of the upper die 4 and the lower die 5. At least one of the upper die 4 and the lower die 5 is connected with the riveting tool as described above. As a preferred embodiment, the upper die 4 and the lower die 5 are respectively connected with the riveting tool as described above. The rivet surfaces 11 in the riveting tools of the upper die 4 and the lower die 5 are oppositely arranged, and the forming bodies 2 in the riveting tools are symmetrically distributed upward and downward. Example four

[0034] Compared with the third embodiment, the difference of the present embodiment is that the length of the forming body 2 is 0.3-0.5 times of the length of the mounting hole 12. A displacement mechanism is further included, which comprises an end-limiting unit corresponding to the forming body 2 and a displacement driving unit for driving the end-limiting unit to move along the axis of the mounting hole 12. The end-limiting unit comprises two limiting blocks movably connected with the base block 1, and the forming body 2 is arranged between the two limiting blocks.

[0035] The displacement mechanism can drive the forming body 2 to move axially in the mounting hole 12, so as to realize the axial movement switching of the riveting pressure force point. When the circumferential wear of a certain section of the forming body 2 reaches a limit value, the section can be switched to the un-worn section for further processing through the axial movement, so as to further improve the service life.

[0036] In summary, the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rivet head tooling having long life characteristics, characterized by: The rivet head face is formed on one side of the base block; two mounting holes are formed on the base block, and the two mounting holes are parallel to each other and parallel to the rivet head face; the mounting holes are open on the rivet head face and form a molding channel, and the central angle of the opening of the molding channel is denoted as A, and A is 80°<A<180°. The molding body is cylindrical, and the molding body corresponds to the mounting hole one by one and is circumferentially movably arranged in the corresponding mounting hole.

2. The swage head tooling of claim 1, wherein: The diameter of the mounting hole is denoted as D, and the diameter of the molding body is denoted as d, and D-d=0.1±0.05mm.

3. The swage head tooling of claim 1, wherein: The molding body is made of tungsten steel.

4. The swage head tooling of claim 1, wherein: The rivet head groove is formed on the rivet head face, and the rivet head groove is located between the two mounting holes and extends in the axial direction of the mounting hole; the molding channel at least partially extends into the rivet head groove.

5. The swage head tooling of claim 4, wherein: The central angle of the corresponding part of the molding channel and the rivet head groove is denoted as B, and B=70°±20°, and A=110°±20°.

6. A swage head tool as claimed in claim 4 or 5, wherein: The two mounting holes are symmetrically distributed left and right.

7. A chain swaging device having long life characteristics comprising an upper die, a lower die and a drive assembly to drive the relative movement of the upper and lower dies; characterised in that: At least one of the upper die and the lower die is connected with the rivet tool as claimed in any one of claims 1-6.

8. The chain clincher device of claim 7, wherein: The upper die and the lower die are respectively connected with the rivet tool; the rivet head faces of the rivet tools of the upper die and the lower die are oppositely arranged, and the molding bodies in the rivet tools are symmetrically distributed.

9. A chain clincher device according to claim 7 or 8, characterised in that: The length of the molding body is 0.3-0.5 times the length of the mounting hole; the displacement mechanism includes an end limiting unit corresponding to the molding body one by one, and a displacement driving unit driving the end limiting unit to move in the axial direction of the mounting hole; the end limiting unit includes two limiting blocks movably connected with the base block, and the molding body is arranged between the two limiting blocks.

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