Riveting die

Abstract

The utility model discloses a riveting die, which relates to the technical field of riveting and comprises two symmetrically arranged dies, and at least one of the two dies can move towards the other die. A right-angle knife and a straight knife are arranged on the mold, the straight knife can slide along the mold, the right-angle knife is fixedly connected with the mold, and a reset elastic part is connected between one end of the straight knife and the mold, so that the straight knife extends out under the elastic force action of the reset elastic part; a right-angle blade and a straight blade are correspondingly arranged on the right-angle knife and the straight knife respectively, the thickness of the right-angle blade is smaller than that of the right-angle knife, and the thickness of the straight blade is smaller than that of the straight knife. According to the riveting die provided by the utility model, the cutter is locally thinned, so that the service life of the cutter is ensured, the riveting die can adapt to the condition that shelters exist at two ends of a pipe fitting and a wire harness which are crimped, and the applicability of the riveting die is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting and pressing, and more specifically to a riveting and pressing die. Background Art

[0002] Square riveting dies are often used to connect pipes and wire harnesses. They are generally of two-stage structure, with the lower die fixed and the upper die driven by a hydraulic device to move up and down. Both the upper and lower dies are equipped with two cutters. When the upper die is pressed down, the four cutters contact each other, forming a square in the center. As the upper die is pressed down, the square is continuously reduced, and the pipe and wire harness are finally crimped together.

[0003] In order to reduce tool wear and increase tool life, the tools of traditional square riveting dies are generally thicker, but too thick tools will make the length of the crimping area too long. When there are obstructions at both ends of the crimped pipes and wires, the length of the available riveting area is less than the thickness of the tool, and the riveting die cannot be used, resulting in the square riveting die being unable to adapt to the situation where there are obstructions at both ends of the crimped pipes and wires.

[0004] Therefore, how to improve the applicability of riveting dies has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a riveting die to improve the applicability of the riveting die.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A riveting die comprises two symmetrically arranged dies, and at least one of the two dies can move toward the direction close to the other die, wherein:

[0008] The mold is provided with a right-angle knife and a straight knife, the straight knife can slide along the mold, and the right-angle knife is fixedly connected to the mold, and a reset elastic member is connected between one end of the straight knife and the mold, so that the straight knife extends out under the elastic force of the reset elastic member;

[0009] The right-angle knife and the straight knife are respectively provided with a right-angle blade and a straight blade, the thickness of the right-angle blade is smaller than the thickness of the right-angle knife, and the thickness of the straight blade is smaller than the thickness of the straight knife.

[0010] Optionally, in the above-mentioned riveting mold, an inclined slide groove is provided on the mold, and the slide groove has a first end and a second end arranged opposite to each other, the first end of the slide groove is provided with an opening for the straight knife to extend out, the straight knife is located in the slide groove, one end of the reset elastic member is connected to the straight knife, and the other end of the reset elastic member is connected to the second end of the slide groove.

[0011] Optionally, in the above-mentioned riveting die, a slideway is provided on the bottom wall of the slide groove, and a limiting protrusion that slidably cooperates with the slideway is provided on the straight knife.

[0012] Optionally, in the above-mentioned riveting die, a limit block for limiting the sliding of the straight knife is provided in the slideway.

[0013] Optionally, in the above-mentioned riveting dies, when the two dies are close to each other, the blade surface of the straight knife of one of the dies fits with the blade surface of the right-angle knife of the other dies, so that the right-angle blades and the straight blades of the two dies surround a riveting cavity for riveting pipelines, and the riveting cavity is a square structure.

[0014] Optionally, in the above-mentioned riveting die, the right-angle blade and the right-angle knife are connected by a circular arc transition, and the straight blade and the straight knife are connected by a circular arc transition.

[0015] Optionally, in the above-mentioned riveting die, the cross-sectional shape of the straight blade and the right-angle blade is a triangle.

[0016] Optionally, the above-mentioned riveting die further includes a slide rail and a driving device, and at least one of the two dies is driven by the driving device to move along the slide rail toward the direction approaching the other die.

[0017] Optionally, the above-mentioned riveting die further includes a hanger arranged on the die and a base for fixing the riveting die.

[0018] Optionally, in the above-mentioned riveting die, the right-angle knife and the die are detachably connected.

[0019] The riveting die provided by the utility model moves at least one of the two dies toward the direction close to the other die, so that the right-angled knives and the straight knives on the two dies are close to each other until the right-angled blade and the straight blade contact the pipe fitting, and the pipe fitting and the wire harness are crimped together. At the same time, because the thickness of the right-angled blade is less than the thickness of the right-angled knife, and the thickness of the straight blade is less than the thickness of the straight knife, the length of the crimping area is greatly reduced compared with the method of crimping directly by the right-angled knife and the straight knife, so that the riveting die can not only adapt to the situation where there are no obstructions at both ends of the crimped pipe fitting and the wire harness, but also adapt to the situation where there are obstructions at both ends of the crimped pipe fitting and the wire harness, thereby improving the applicability of the riveting die.

[0020] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown separately in the drawings can be combined with each other arbitrarily, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A structural diagram of a riveting die provided in an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the installation of a tool provided in an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the installation of the limit stopper and the slideway provided in the embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the structure of a right-angle knife provided in an embodiment of the utility model;

[0026] Figure 5 A schematic structural diagram of a straight knife provided in an embodiment of the utility model.

[0027] Among them, 100 is a mold, 101 is a right-angle knife, 1011 is a right-angle blade, 1012 is a first right-angle knife surface, 1013 is a second right-angle knife surface, 102 is a straight knife, 1021 is a straight blade, 1022 is a limiting protrusion, 1023 is a first straight knife surface, 1024 is a second straight knife surface, 103 is a reset elastic part, 104 is a slide groove, 1041 is a slide way, 105 is a limiting block, 106 is a riveting cavity, 107 is a slide rail, 108 is a bracket, 109 is a base, and 110 is a cover plate. DETAILED DESCRIPTION

[0028] The core of the utility model is to provide a riveting die to improve the applicability of the riveting die.

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Square riveting dies are often used to connect pipes and wire harnesses. They are generally of two-stage structure, with the lower die fixed and the upper die driven by a hydraulic device to move up and down. Both the upper and lower dies are equipped with two cutters. When the upper die is pressed down, the four cutters contact each other, forming a square in the center. As the upper die is pressed down, the square is continuously reduced, and the pipe and wire harness are finally crimped together.

[0031] In order to reduce tool wear and increase tool life, the tools of traditional square riveting dies are generally thicker, but too thick tools will make the length of the crimping area too long. When there are obstructions at both ends of the crimped pipes and wires, the length of the available riveting area is less than the thickness of the tool, and the riveting die cannot be used, resulting in the square riveting die being unable to adapt to the situation where there are obstructions at both ends of the crimped pipes and wires.

[0032] In addition, in order to increase the versatility of the riveting die and adapt it to pipes of various outer diameters, the tool stroke is often very long to obtain a larger square opening. However, too long a stroke will increase the wear rate of the tool side, which is not conducive to product quality control. At the same time, for some production sites that need to strictly control the number of particles, it is also necessary to reduce the tool stroke and reduce the particles generated by tool friction.

[0033] For this reason, Figure 1 and Figure 2As shown, the embodiment of the utility model discloses a riveting die, comprising two symmetrically arranged dies 100, and at least one of the two dies 100 can move in a direction close to the other die 100. A right-angle knife 101 and a straight knife 102 are arranged on the die 100, and the straight knife 102 can slide along the die 100, and the right-angle knife 101 is fixedly connected to the die 100, and a reset elastic member 103 is connected between one end of the straight knife 102 and the die 100, so that the straight knife 102 extends out under the elastic force of the reset elastic member 103. In addition, a right-angle blade 1011 and a straight blade 1021 are respectively arranged on the right-angle knife 101 and the straight knife 102. When the pipeline is crimped, at least one of the two molds 100 moves toward the other mold 100, so that the right-angled knife 101 and the straight knife 102 on the two molds 100 are close to each other until the right-angled blade 1011 and the straight blade 1021 contact the pipe fitting, and the pipe fitting and the wire harness are crimped together. Since a reset elastic member 103 is connected between one end of the straight knife 102 and the mold 100, the straight knife 102 can adapt to the crimping of pipelines of various diameters. At the same time, in order to reduce the length of the crimping area, the thickness of the right-angle blade 1011 is smaller than the thickness of the right-angle knife 101, and the thickness of the straight blade 1021 is smaller than the thickness of the straight knife 102, so that the length of the crimping area is greatly reduced compared with the direct crimping method using the right-angle knife 101 and the straight knife 102. As a result, the riveting die 100 can not only adapt to the situation where there are no obstructions at both ends of the crimped pipes and wire harnesses, but also can adapt to the situation where there are obstructions at both ends of the crimped pipes and wire harnesses, thereby improving the applicability of the riveting die 100.

[0034] Furthermore, if Figure 2As shown, in a specific embodiment, the right-angle knife 101 is an L-shaped structure, and the straight knife 102 is a strip-shaped structure. At the same time, the right-angle knife 101 and the mold 100 are detachably connected to facilitate the replacement of the right-angle knife 101. In this embodiment, the mold 100 is provided with a mounting groove adapted to the right-angle knife 101, and the right-angle knife 101 is located in the mounting groove. For ease of understanding, the two ends of the right-angle knife 101 are defined as a first end and a second end, respectively. The first end of the right-angle knife 101 is fixed in the mounting groove by a fastener such as a bolt, and because the mounting groove is adapted to the right-angle knife 101, the right-angle knife 101 can be prevented from rotating, thereby ensuring the reliability of the connection between the right-angle knife 101 and the mold 100. In addition, the right-angle blade 1011 is provided at the second end of the right-angle knife 101, and the right-angle blade 1011 and part of the right-angle knife 101 extend out of the mounting groove to crimp the pipeline. At the same time, for the convenience of understanding, the two ends of the straight knife 102 are defined as the first end and the second end respectively. An inclined slide groove 104 is provided on the mold 100, the slide groove 104 is connected to the mounting groove, and the slide groove 104 has a first end and a second end arranged oppositely, the first end of the slide groove 104 is provided with an opening, the straight knife 102 is located in the slide groove 104, one end of the reset elastic member 103 is connected to the first end of the straight knife 102, the other end of the reset elastic member 103 is connected to the second end of the slide groove 104, the straight blade 1021 is provided at the second end of the straight knife 102, and the straight blade 1021 extends from the opening of the slide groove 104, so as to facilitate the crimping of the pipeline, and at the same time, the elastic force applied to the straight knife 102 by the reset elastic member 103 enables the tool of the riveting mold to adapt to the crimping of pipelines of various diameters. It should be noted that, in this embodiment, the reset elastic member 103 may be but is not limited to a compression spring, and when the reset elastic member 103 is in a natural state, the straight knife 102 extends out of the first end of the slide groove 104, or when the reset elastic member 103 is in a certain compression deformation state, the straight knife 102 extends out of the first end of the slide groove 104.

[0035] In order to prevent the straight knife 102 from falling out of the slide groove 104, Figure 1 As shown, a cover plate 110 is provided on the side of the slide groove 104 of the mold 100 , and the cover plate 110 is connected and fixed to the mold 100 by fasteners such as bolts to facilitate the replacement of the straight knife 102 .

[0036] Furthermore, if Figure 4 and Figure 5As shown, in a specific embodiment, the cross-sectional shape of the straight blade 1021 and the right-angle blade 1011 can be, but not limited to, a triangle, and can also be a circle according to actual needs. At the same time, the right-angle knife 101 and the straight knife 102 can be made of die steel or hard alloy steel to improve the wear resistance of the right-angle knife 101 and the straight knife 102, and the straight blade 1021 and the right-angle blade 1011 can be quenched to increase the hardness of the straight blade 1021 and the right-angle blade 1011. In addition, in order to avoid the phenomenon of stress concentration caused by thinning the local part of the tool, in this embodiment, the connection position of the right-angle blade 1011 and the right-angle blade 101 can be connected by an arc transition, and similarly, the connection position of the straight blade 1021 and the straight knife 102 can also be connected by an arc transition to avoid the fracture phenomenon at the connection position of the blade and the tool due to stress concentration.

[0037] Furthermore, the cross-sectional shape of the straight blade 1021 and the right-angle blade 1011 is triangular. When the two molds 100 are close to each other, the blade surface of the straight blade 102 of one mold 100 fits with the blade surface of the right-angle blade 101 of the other mold 100, so that the right-angle blades 1011 and the straight blades 1021 of the two molds 100 surround a riveting cavity 106 for riveting pipelines, and the riveting cavity 106 is a square structure. For ease of understanding, the two molds 100 are defined as an upper mold and a lower mold, respectively, and as shown in FIG. Figure 4 As shown, the side where one right-angle edge of the right-angle blade 1011 is located is defined as a first right-angle blade surface 1012, and the side where the other right-angle edge of the right-angle blade 1011 on the right-angle knife 101 is located is defined as a second right-angle blade surface 1013, as shown in FIG. Figure 5 As shown, the side where one right-angled side of the straight blade 1021 on the straight knife 102 is located is defined as the first straight blade surface 1023, and the side where the other right-angled side of the straight blade 1021 on the straight knife 102 is located is defined as the second straight blade surface 1024. During assembly, the first straight blade surface 1023 of the upper mold is closely fitted with the first right-angled blade surface 1012, and the first straight blade surface 1023 of the lower mold is closely fitted with the first right-angled blade surface 1012. When the two molds 100 approach each other, the second straight blade surface 1024 of the upper mold will be fitted on the second right-angled blade surface 1013 of the lower mold, and the second straight blade surface 1024 of the lower mold will be fitted on the second right-angled blade surface 1013 of the upper mold, so that the middle position of the four knives forms a square structure of the riveting cavity 106. When the two molds 100 continue to approach each other, the straight knife 102 continues to move into the slide groove 104, so that the riveting cavity 106 is continuously reduced, and finally the four knives are completely closed, and the riveting cavity 106 disappears. It should be noted that the disappearance of the riveting cavity 106 is a limit state when the riveting die does not perform pipeline crimping.

[0038] Furthermore, if Figure 3 and Figure 5As shown, in order to prevent the straight knife 102 from being misaligned when sliding, a slideway 1041 is provided on the bottom wall of the slideway 104, and a limiting protrusion 1022 is provided on the straight knife 102 to slide with the slideway 1041. When the straight knife 102 is installed in the slideway 104 of the mold 100, the limiting protrusion on the straight knife 102 is inserted into the slideway 1041. Through the clearance between the slideway 1041 and the limiting protrusion 1022, the straight knife 102 can be effectively prevented from being misaligned when sliding, thereby improving the crimping efficiency and reducing the wear of the tool. Specifically, the slideway 1041 is arranged on the bottom wall of the slideway 104 in parallel with the slideway 104, and the width of the slideway 1041 is smaller than the width of the slideway 104, and the length of the slideway 1041 is smaller than the length of the slideway 104. At the same time, the limiting protrusion 1022 can be a columnar protrusion, a spherical protrusion, a trapezoidal protrusion, etc., and the cross-sectional shape of the slide 1041 can be a rectangular cross-section that matches the limiting protrusion 1022, or an arc cross-section or a trapezoidal cross-section, etc., which is not limited in this article.

[0039] Furthermore, since an excessively long stroke will increase the wear rate of the tool side, it is not conducive to product quality control. At the same time, for some production sites that need to strictly control the number of particles, it is necessary to reduce the tool stroke and reduce the particles generated by tool friction.

[0040] For this reason, Figure 3 As shown, in a specific embodiment, a limit stopper 105 for limiting the sliding of the straight knife 102 can be provided in the slideway 1041 to shorten the stroke of the tool and reduce the wear rate of the side of the tool. Specifically, a limit stopper 105 adapted to the slideway 1041 can be placed in the slideway 1041. When the straight knife 102 is extended forward by the elastic force of the reset elastic member 103, the limit stopper 105 will support the limit protrusion 1022 on the straight knife 102 to prevent the straight knife 102 from being pushed out too long. The length of the limit stopper 105 can be adjusted according to the size of the riveted parts, and the limit stopper 105 can be made of a metal material with a certain strength such as aluminum alloy to avoid deformation due to extrusion.

[0041] Furthermore, if Figure 1As shown, in order to ensure that the two molds 100 move in a direction perpendicular to the pipeline, the riveting mold also includes a slide rail 107 and a driving device, and at least one of the two molds 100 is driven by the driving device to move along the slide rail 107 in a direction close to the other mold 100, thereby achieving the crimping of the pipeline. In this embodiment, the slide rail 107 is fixed on the lower mold, and the driving device can drive the upper mold to move along the slide rail 107 in a direction close to the lower mold to achieve the crimping of the pipeline. Among them, the driving device can adopt a hydraulic device, a pneumatic device or an electric device, which is not limited in this article. Of course, the lower mold can also move along the slide rail 107, and the driving device can simultaneously drive the upper mold and the lower mold to move in a direction close to the pipeline, thereby achieving efficient crimping of the pipeline.

[0042] Furthermore, if Figure 1 As shown, in order to facilitate the installation and fixation of the riveting die, the riveting die also includes a hanger 108 provided on the die 100 and a base 109 for fixing the riveting die. Specifically, the hanger 108 is fixed to the top of the upper die to cooperate with the use of other devices, such as a pressure sensor, a driving device, etc. At the same time, the base 109 is fixed to the bottom of the lower die to facilitate the installation and fixation between the riveting die and the workbench to ensure the stability of the riveting die during crimping.

[0043] The terms "first" and "second" in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A riveting die, characterized in that: The invention comprises two symmetrically arranged molds (100), and at least one of the two molds (100) can be moved in a direction close to the other mold (100), wherein: The mold (100) is provided with a right-angle knife (101) and a straight knife (102); the straight knife (102) can slide along the mold (100), and the right-angle knife (101) is fixedly connected to the mold (100); a reset elastic member (103) is connected between one end of the straight knife (102) and the mold (100), so that the straight knife (102) extends out under the elastic force of the reset elastic member (103); The right-angle knife (101) and the straight knife (102) are respectively provided with a right-angle blade (1011) and a straight blade (1021); the thickness of the right-angle blade (1011) is smaller than the thickness of the right-angle knife (101), and the thickness of the straight blade (1021) is smaller than the thickness of the straight knife (102).

2. The riveting die according to claim 1, characterized in that: The mold (100) is provided with an inclined slide groove (104), and the slide groove (104) has a first end and a second end arranged opposite to each other, the first end of the slide groove (104) is provided with an opening for the straight knife (102) to extend out, the straight knife (102) is located in the slide groove (104), one end of the reset elastic member (103) is connected to the straight knife (102), and the other end of the reset elastic member (103) is connected to the second end of the slide groove (104).

3. The riveting die according to claim 2, characterized in that: A slideway (1041) is provided on the bottom wall of the slide groove (104), and a limiting protrusion (1022) which slidably cooperates with the slideway (1041) is provided on the straight knife (102).

4. The riveting die according to claim 3, characterized in that: A limit block (105) for limiting the sliding of the straight knife (102) is arranged in the slideway (1041).

5. The riveting die according to claim 1, characterized in that: When the two molds (100) are close to each other, the blade surface of the straight knife (102) of one of the molds (100) fits with the blade surface of the right-angle knife (101) of the other mold (100), so that the right-angle blades (1011) and the straight blades (1021) of the two molds (100) surround a riveting cavity (106) for riveting pipelines, and the riveting cavity (106) is a square structure.

6. The riveting die according to claim 1, characterized in that: The right-angle blade (1011) and the right-angle knife (101) are connected via a circular arc transition, and the straight blade (1021) and the straight knife (102) are connected via a circular arc transition.

7. The riveting die according to claim 1, characterized in that: The cross-sectional shapes of the straight blade (1021) and the right-angle blade (1011) are triangular.

8. The riveting die according to claim 1, characterized in that: It also comprises a slide rail (107) and a driving device, and at least one of the two molds (100) is driven by the driving device to move along the slide rail (107) in a direction close to the other mold (100).

9. The riveting die according to claim 1, characterized in that: It also includes a hanger (108) arranged on the mold (100) and a base (109) for fixing the riveting mold.

10. The riveting die according to claim 1, characterized in that: The right-angle knife (101) and the mold (100) are detachably connected.

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