Stamping and bending die for titanium-clad copper composite material

Abstract

The stamping and bending die for the titanium-clad copper composite material comprises a lower die assembly and an upper die, a bending guide groove is formed in the lower die assembly, and the upper die matched with the bending guide groove in shape corresponds to the bending guide groove in vertical position. Two-section type rotary positioning and supporting devices distributed on the two sides of a groove opening of the bending guide groove are rotationally installed at the position of an upper end opening of the lower die assembly, and the titanium-clad copper composite rod is horizontally positioned on the two-section type rotary positioning and supporting devices. And in the process that the oil pressure movable punch drives the upper die to move downwards, the bending guide groove and the two-section type rotary positioning and supporting device are matched to achieve bending of the bending position of the titanium-clad copper composite rod, and heating openings which communicate with the bending guide groove and are used for conducting anti-tearing heating on the bending position of the titanium-clad copper composite rod are formed in the front side wall and the rear side wall of the lower die assembly. The bending machine solves the problem that a bending machine cannot bend a bar with a small bending radius, the bending precision and quality of the bar with the bending radius are ensured, and the bending machine is simple in structure, novel in design, convenient and rapid to operate, high in bending efficiency and good in quality.

Description

Technical Field

[0001] The invention belongs to the technical field of bar bending, and in particular relates to a stamping and bending die for titanium-clad copper composite materials. Background Art

[0002] The bending forming of metal materials is that the metal bar first undergoes elastic deformation and then plastic deformation under the cooperative extrusion of the upper and lower die assemblies of the bending machine. As the upper die continues to apply pressure to the material, the material and the inner surface of the V-groove of the lower die assembly gradually come close to each other. The pressure is continued until the stroke ends, so that the upper and lower die assemblies are in full contact with the material, and a V-shaped bend is completed at this time.

[0003] Titanium-clad copper composite rods with large bending angles are bent using a bending machine. However, due to the limited bending radius of traditional bending machines, it is impossible to complete the bending of titanium-clad copper composite rods with a bending radius less than 10mm and a smaller width. Direct bending is prone to tearing at the bending position. Therefore, under the condition of using a hydraulic press to stamp, it is necessary to design a tear-resistant bending die for titanium-clad copper composite rods with small bending radius and narrow surface bending to solve the above technical problems. Summary of the Invention

[0004] The technical problem solved by the present invention is as follows: A stamping and bending die for titanium-clad copper composite materials is provided, which adopts an upper die and a lower die assembly with a two-stage rotating positioning support device and a bending guide groove inside. Under the premise that the titanium-clad copper composite rod is horizontally positioned by the two-stage rotating positioning support device, the upper die is driven downward by the hydraulic motorized punch to preheat the bending part of the titanium-clad copper composite rod through the heating port in cooperation with the bending guide groove and the two-stage rotating positioning support device, so as to achieve high-quality bending of the bending position of the titanium-clad copper composite rod, solve the problem that the bending machine cannot achieve the bending of rods with a smaller bending radius, ensure the bending accuracy and quality of rods with a small bending radius, have a simple structure, novel design, convenient and quick operation, high bending efficiency, good quality and high use value.

[0005] The technical solution adopted by the present invention is a stamping and bending die for titanium-clad copper composite materials, comprising a lower die assembly fixed on the workbench of a hydraulic press and an upper die located above the lower die assembly and fixedly connected to a dynamic punch on the hydraulic press, wherein a bending guide groove is provided inside the lower die assembly, and an upper die adapted to the shape of the bending guide groove corresponds to the upper and lower positions of the bending guide groove, and a two-stage rotary positioning support device distributed on both sides of the bending guide groove is rotatably installed at the upper end position of the lower die assembly, and the titanium-clad copper composite rod is horizontally positioned on the two-stage rotary positioning support device, and the bending position of the titanium-clad copper composite rod is bent in cooperation with the bending guide groove and the two-stage rotary positioning support device during the process of the hydraulic motorized punch driving the upper die downward, and a heating port is provided on the front and rear side walls of the lower die assembly, which is connected to the bending guide groove and is used to perform tear-proof heating on the bending position of the titanium-clad copper composite rod.

[0006] Among them, the two-stage rotation positioning support device includes two rotation axes symmetrically arranged with the vertical center line of the bending guide groove as the center, the rotation axis is located inside the upper end of the lower mold assembly, and the two ends of the rotation axis are rotatably installed on the corresponding side rod surfaces of the lower mold assembly, the outer wall of the rotation axis is provided with a positioning groove perpendicular to its axis, and the outer ends of the two centrally symmetrically arranged guide rods are fixed on the groove surface of the positioning groove, and the inner ends of the two guide rods are reserved with a rotation avoidance space, the titanium clad copper composite rod is adapted to the positioning groove and contacts the guide rod, and the hydraulic motorized punch drives the upper mold to move downward, and is positioned and guided by the positioning groove while realizing the anti-deformation support bending of the titanium clad copper composite rod under the rotation support of the two guide rods.

[0007] Furthermore, the limit position of the rotation of the two guide rods is the contact position between the bottom surface of the guide rod and the side groove surface corresponding to the bending guide groove.

[0008] Furthermore, the rotating shaft is a columnar structure with an arc-shaped outer wall at the lower end and a horizontal surface at the upper end, and the positioning slot is located on the horizontal surface of the rotating shaft. The rotating shaft is arranged with the horizontal surface facing upward in the initial state.

[0009] Furthermore, the lower mold assembly includes two symmetrically arranged lower mold rods and a core mold arranged between the two lower mold rods, a V-shaped bending guide groove in the middle of the upper end surface of the core mold that is adapted to the upper mold and an arc-shaped positioning groove at the upper end of the core mold that is respectively connected to the two ends of the bending guide groove form a through groove, and support grooves that are symmetrically arranged concentrically with the positioning grooves are provided on the upper end surface of the lower mold rod, and a heating port is provided in the middle of the lower mold rod, and the core mold and the lower mold rods on both sides thereof are fixedly connected as a whole by multiple bolts distributed in a triangular pattern.

[0010] Furthermore, the two ends of the two rotating shafts in the two-stage rotating positioning support device are adapted to the support grooves at corresponding positions on the two lower mold bars, and a limiting rod located outside the support groove and used to limit the rotating shaft is fixed on the outer wall of the lower mold bar.

[0011] The advantages of the present invention compared with the prior art are:

[0012] 1. This technical solution uses a two-stage rotating positioning support device to horizontally position the titanium-clad copper composite rod. During the downward movement of the upper die driven by the hydraulic motorized punch, the bending guide groove and the two-stage rotating positioning support device are used to preheat the bending part of the titanium-clad copper composite rod through the heating port, thereby achieving high-quality bending of the titanium-clad copper composite rod at the bending position. This solves the problem that the bending machine cannot achieve bending of bars with a small bending radius, and ensures the bending accuracy and quality of bars with a small bending radius.

[0013] 2. This technical solution adopts a lower die assembly consisting of a core die with a V-shaped bending guide groove and two lower die bars with support grooves, which provides positioning and rotation support conditions for the rotating shaft with a positioning slot. In addition, with the cooperation of the upper die and the bending guide groove, the heating port selectively heats the bending part while providing conditions for high-quality bending of the titanium-clad copper composite rod.

[0014] 3. This technical solution adopts two rotating shafts rotatably mounted on the two lower die bars, and provides reliable support conditions for the titanium-clad copper composite rod during the bending process through the guide rods in the positioning slots on the rotating shafts, ensuring that the straight edges on both sides of the bending position of the rod are supported during the bending process to avoid indentation defects at the straight edge position;

[0015] 4. This technical solution has a simple structure, novel design, convenient and quick operation, high bending efficiency, good quality and low cost. It is particularly suitable for high-quality bending of narrow bars with a bending radius of less than 10mm. It solves the problems of tilting of titanium-clad copper composite rods when the width-to-thickness ratio is large and the bending angle is small, as well as the inability to achieve vertical bending. It has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the structure of the present invention;

[0017] Figure 2 It is a left view of the structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the present invention in use;

[0019] Figure 4 This is a schematic structural diagram of the lower mold assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the lower mold bar structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the core mold structure of the present invention. DETAILED DESCRIPTION

[0022] The following is a combination of the embodiments of the present invention Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass 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. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0025] Stamping and bending dies for titanium-clad copper composite materials, such as Figure 1-4As shown, it includes a lower die assembly 1 fixed on the workbench of the hydraulic press and an upper die 2 located above the lower die assembly 1 and fixedly connected to the dynamic punch on the hydraulic press, the lower die assembly 1 is provided with a bending guide groove 3, and the upper die 2 adapted to the shape of the bending guide groove 3 corresponds to the upper and lower positions of the bending guide groove 3, the upper end position of the lower die assembly 1 is rotatably installed with a two-stage rotary positioning support device distributed on both sides of the notch of the bending guide groove 3, and the titanium clad copper composite rod 4 is horizontally positioned on the two-stage rotary positioning support device, and in the process of the hydraulic motorized punch driving the upper die 2 to move downward, the bending part of the titanium clad copper composite rod 4 is preheated through the heating port 10 with the cooperation of the bending guide groove 3 and the two-stage rotary positioning support device, so as to achieve high-quality bending of the bending position of the titanium clad copper composite rod 4, and the front and rear side walls of the lower die assembly 1 are provided with a connection with the bending guide groove 3 and used for bending the titanium clad copper composite rod 4 The heating port 10 for anti-tear heating at the bending position is designed to facilitate observation of the bending forming. If the vertical force exceeds the yield point and cracks will occur, the reserved heating ports 10 on both sides can serve as auxiliary heating for the heating ports, thereby realizing anti-tear and high-quality bending of the titanium-clad copper composite rod 4. In the above structure, the titanium-clad copper composite rod 4 is horizontally positioned by the two-stage rotating positioning support device. During the downward movement of the upper die 2 driven by the hydraulic motorized punch, the bending part of the titanium-clad copper composite rod 4 is preheated through the heating port 10 in cooperation with the bending guide groove 3 and the two-stage rotating positioning support device, thereby realizing the bending of the titanium-clad copper composite rod 4. The anti-tear heating of the bending position is performed through the set heating port 10 according to the bending situation, which solves the problem that the bending machine cannot realize the bending of bars with a smaller bending radius, thereby ensuring the bending accuracy and quality of bars with a bending radius.

[0026] The specific structure of the two-stage rotary positioning support device is as follows: the two-stage rotary positioning support device includes two rotary shafts 5 symmetrically arranged with the vertical center line of the bending guide groove 3 as the center, the rotary shaft 5 is located inside the upper end of the lower mold assembly 1, and the two ends of the rotary shaft 5 are rotatably installed on the corresponding side rod surface of the lower mold assembly 1, the outer wall of the rotary shaft 5 is provided with a positioning groove 6 arranged perpendicular to its axis, and the outer ends of the two centrally symmetrically arranged guide rods 7 are fixed on the groove surface of the positioning groove 6, and the inner ends of the two guide rods 7 are reserved with a rotation avoidance spacing 9, wherein the design of the rotation avoidance spacing 9 can avoid interference between the inner ends of the two guide rods 7 during the rotation of the two rotary shafts 5, thereby ensuring the smooth rotation of the two guide rods 7, the titanium-clad copper composite rod 4 is adapted to the positioning groove 6 and contacts the guide rod 7, and the hydraulic motorized punch drives the upper mold 2 down During the shifting process, the positioning slot 6 is used to position and guide the titanium clad copper composite rod 4, and the two guide rods 7 are used to support and support the titanium clad copper composite rod 4 to achieve anti-deformation support and bending; specifically, the limit position of the rotation of the two guide rods 7 is the contact position between the bottom surface of the guide rod 7 and the corresponding side groove surface of the bending guide groove 3; specifically, the rotating shaft 5 is a columnar structure with an arc-shaped outer wall at the lower end and a horizontal surface at the upper end, and the positioning slot 6 is located on the horizontal plane of the rotating shaft 5, and the rotating shaft 5 is set with the horizontal surface facing upward in the initial state; in the above structure, two rotating shafts 5 are rotatably mounted on the lower mold assembly 1, and the guide rods 7 in the positioning slots 6 on the rotating shaft 5 are used to provide reliable support conditions for the titanium clad copper composite rod 4 during the bending process, ensuring that the straight edges on both sides of the bending position of the rod are supported during the bending process, avoiding indentation defects at the straight edge position, and improving the bending quality;

[0027] like Figure 4-6 The specific structure of the lower mold assembly 1 is as follows: the lower mold assembly 1 includes two symmetrically arranged lower mold bars 1-1 and a core mold 1-2 arranged between the two lower mold bars 1-1, a V-shaped bending guide groove 3 in the middle of the upper end surface of the core mold 1-2 adapted to the upper mold 2, and an arc-shaped positioning groove 1-3 at the upper end of the core mold 1-2 respectively connected to the two ends of the bending guide groove 3 to form a through groove, wherein, Figure 4The bending guide groove 3 is at an angle of 90°, and the upper end surface of the lower mold bar 1-1 is symmetrically provided with a support groove 1-4 which is concentric with the positioning groove 1-3, and the heating port 10 is provided in the middle of the lower mold bar 1-1. The core mold 1-2 and the lower mold bars 1-1 on both sides thereof are fixedly connected as a whole by a plurality of bolts distributed in a triangular pattern. In the above structure, the setting of the support groove 1-4, on the one hand, provides a rotation guide condition for the rotating shaft 5, ensuring that the rotating shaft 5 rotates within a specified range during the bending process of the bar, thereby ensuring the stability of the support for the bar. On the one hand, it provides a stable and reliable support structure for the rotating shaft 5, and on the other hand, it provides a reliable support structure for the rotating shaft 5, ensuring the stability and reliability of the supporting structure of the rotating shaft 5; the lower die assembly 1 composed of a core die 1-2 with a V-shaped bending guide groove 3 and a positioning groove 1-3 and two lower die bars 1-1 with support grooves 1-4 is adopted to provide positioning and rotating support conditions for the rotating shaft 5 with a positioning slot 6, and with the cooperation of the upper die 2 and the bending guide groove 3, it provides conditions for high-quality bending of the titanium-clad copper composite rod 4; the lower die assembly 1 is formed by bolt fastening as a whole, which is easy to disassemble and assemble.

[0028] Specifically, the two ends of the two rotating shafts 5 in the two-stage rotating positioning support device are adapted to the support grooves 1-4 at corresponding positions on the two lower mold bars 1-1, and a limiting rod 8 is fixed on the outer wall of the lower mold bar 1-1, which is located outside the support groove 1-4 and is used to limit the rotating shaft 5. Under the action of the limiting rod 8, the rotating installation of the rotating shaft 5 on the lower mold bar 1-1 is realized.

[0029] The wide side of the titanium-clad copper composite rod 4 is vertically arranged and adapted to the positioning slot 6. When the hydraulic motorized punch drives the upper die 2 to move down to contact the upper end of the titanium-clad copper composite rod 4, the titanium-clad copper composite rod 4 moves down together with the upper die 2 after being subjected to force at the contact position. During this process, the two rotating shafts 5 and the guide rods 7 thereon rotate synchronously to enhance the protective support function for the vertical surface of the titanium-clad copper composite rod 4. During this process, the bending part of the titanium-clad copper composite rod 4 can be preheated according to the situation to ensure anti-tear bending while avoiding the occurrence of pressure pits on the two vertical surfaces of the titanium-clad copper composite rod 4. The upper die 2 is pressed down until the titanium-clad copper composite rod 4 completes the 90° forming and bending.

[0030] This technical solution has a simple structure, novel design, convenient and quick operation, high bending efficiency, good quality, and low cost. It is particularly suitable for high-quality bending of narrow bars with a bending radius of less than 10mm and has high use value.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A stamping and bending die for titanium-clad copper composite materials, characterized by: The invention comprises a lower die assembly (1) fixed on a workbench of a hydraulic press and an upper die (2) located above the lower die assembly (1) and fixedly connected to a moving punch on the hydraulic press, wherein the lower die assembly (1) is provided with a bending guide groove (3) whose notch is lower than the upper end surface thereof, and the upper die (2) whose shape matches the bending guide groove (3) corresponds to the upper and lower positions of the bending guide groove (3), and the lower die assembly (1) is rotatably installed with a two-stage rotating positioning support device distributed on both sides of the notch of the bending guide groove (3), and the two ends are A titanium-clad copper composite rod (4) that passes through the lower die assembly (1) is horizontally positioned on a two-stage rotating positioning support device, and when the hydraulic motorized punch drives the upper die (2) to move downward, the bending position of the titanium-clad copper composite rod (4) is bent in cooperation with the bending guide groove (3) and the two-stage rotating positioning support device. A heating port (10) that is connected to the bending guide groove (3) and is used to perform tear-proof heating on the bending position of the titanium-clad copper composite rod (4) is provided on the front and rear side walls of the lower die assembly (1).

2. The stamping and bending die for titanium-clad copper composite material according to claim 1, characterized in that: The two-stage rotating positioning support device comprises two rotating shafts (5) symmetrically arranged with the vertical center line of the bending guide groove (3) as the center, the rotating shaft (5) is located inside the upper end of the lower mold assembly (1), and the two ends of the rotating shaft (5) are rotatably mounted on the corresponding side rod surfaces of the lower mold assembly (1), the outer wall of the rotating shaft (5) is provided with a positioning groove (6) arranged perpendicular to its axis, and the outer ends of two centrally symmetrically arranged guide rods (7) are fixed on the groove surface of the positioning groove (6), and the inner ends of the two guide rods (7) are reserved with a rotation avoidance spacing (9), the titanium-clad copper composite rod (4) is adapted to be in the positioning groove (6) and in contact with the guide rod (7), and the hydraulic motorized punch drives the upper mold (2) to move downward, while being positioned and guided by the positioning groove (6), the titanium-clad copper composite rod (4) is supported and bent with anti-deformation support under the rotation support of the two guide rods (7).

3. The stamping and bending die for the titanium-clad copper composite material according to claim 2, characterized in that: The limit position of the rotation of the two guide rods (7) is the contact position between the bottom surface of the guide rod (7) and the corresponding side groove surface of the bending guide groove (3).

4. The stamping and bending die for the titanium-clad copper composite material according to claim 3, characterized in that: The rotating shaft (5) is a columnar structure with an arc-shaped outer wall at the lower end and a horizontal surface at the upper end, and the positioning slot (6) is located on the horizontal surface of the rotating shaft (5). In the initial state, the rotating shaft (5) is arranged with the horizontal surface facing upward.

5. The stamping and bending die for the titanium-clad copper composite material according to any one of claims 1 to 4, characterized in that: The lower mold assembly (1) comprises two symmetrically arranged lower mold bars (1-1) and a core mold (1-2) arranged between the two lower mold bars (1-1); a V-shaped bending guide groove (3) adapted to the upper mold (2) in the middle of the upper end surface of the core mold (1-2) and an arc-shaped positioning groove (1-3) at the upper end of the core mold (1-2) respectively connected to the two ends of the bending guide groove (3) to form a through groove; a support groove (1-4) coaxially arranged with the positioning groove (1-3) is symmetrically arranged on the upper end rod surface of the lower mold bar (1-1); a heating port (10) is arranged in the middle of the lower mold bar (1-1); the core mold (1-2) and the lower mold bars (1-1) on both sides thereof are fixedly connected as a whole by a plurality of bolts distributed in a triangle.

6. The stamping and bending die for the titanium-clad copper composite material according to claim 5, characterized in that: The two ends of the two rotating shafts (5) in the two-stage rotating positioning support device are adapted to fit into the supporting grooves (1-4) at corresponding positions on the two lower mold bars (1-1), and a limiting rod (8) located outside the supporting groove (1-4) and used for limiting the rotating shaft (5) is fixed on the outer wall of the lower mold bar (1-1).

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