Steel plate hot stamping tool for machining bus duct

Abstract

The utility model relates to a steel plate hot stamping tool for processing a bus duct, which comprises a mounting base, and a lower die body and an upper die body which are supported on the mounting base through a supporting piece and are matched with each other to form a forming die cavity. A first magnetic attraction positioning assembly and a second magnetic attraction positioning assembly are arranged on the inner bottom face of the groove cavity of the lower die body and the lower surface of the shaping protruding block of the upper die body respectively, and the first magnetic attraction positioning assembly and the second magnetic attraction positioning assembly are selectively attached to different surfaces of a to-be-stamped steel plate in a para-position arrangement mode. The stamping station of the steel plate to be stamped is positioned; the outer side of the lower die body is further provided with a limiting frame capable of positioning an initial placement station of a steel plate to be stamped. And the mounting base is further provided with a cooling assembly which is partially arranged in the lower die body in a penetrating manner and is used for cooling the stamped steel plate in an adjustable manner. According to the utility model, the stamping station of the steel plate in the deformation process can be effectively limited in a bidirectional magnetic elastic positioning mode.

Description

Technical Field

[0001] The utility model relates to the technical field of bus duct stamping parts production equipment, in particular to a steel plate hot stamping tool for processing bus ducts. Background Art

[0002] Bus duct is a power distribution device that efficiently transmits current. It is suitable for power transmission in increasingly tall buildings and large-scale factories. During the production and processing of bus duct, stamping equipment is needed to stamp and form metal sheet raw materials.

[0003] At present, the commonly used stamping is cold stamping. When performing stamping forming of bent workpieces, the bent parts are very likely to have obvious springback. In addition, due to the high yield strength and poor ductility of the steel plate workpiece, the bent deformation area of ​​the steel plate is very likely to have defects such as cracking and wrinkling during the stamping process, which reduces the mechanical properties and wear resistance of the formed product. Therefore, in order to improve the performance of the workpiece after stamping, hot stamping is considered to improve the processing quality. However, hot stamping will cause the temperature of the steel plate workpiece after forming to remain at a high state, which is not conducive to direct subsequent processing. It takes a lot of time for idling cooling, which affects production efficiency. In addition, the high temperature state is also prone to cause an oxide layer to appear on the workpiece, reducing its overall performance. Finally, when stamping, the existing bus duct stamping equipment usually positions the steel plate to be stamped by edge abutment limiting. However, it cannot move with the steel plate during the stamping deformation process, and cannot ensure the uniformity of the centering deformation of the two sides of the steel plate when being stamped. It is very easy for the deformation of the two sides of the plate to be inconsistent, resulting in stamping offset, resulting in the edge plate size parameters of the stamped workpiece being significantly different from the preset parameters, affecting the stamping effect and quality. In addition, the existing equipment does not have an effective stamping buffer function, resulting in the strong pressure at the end of the stamping easily acting directly on the mold, causing damage to the mold body, thereby shortening the life of the mold body. Utility Model Content

[0004] The utility model aims to provide a hot stamping tool for processing bus ducts, which can effectively limit the stamping station of the steel plate during the deformation process by means of bidirectional magnetic elastic positioning, and can utilize the elastic deformation of the positioning structure during the stamping process to buffer and reduce shock to improve the stamping stability, so as to solve the problem that the existing stamping equipment is unable to continuously and effectively position the steel plate used for processing the bus duct during the deformation process, resulting in the steel plate after a certain deformation being very easy to deflect / sway and affecting the quality of the workpiece after stamping, and the existing stamping equipment is unable to buffer the hard impact at the end of the stamping process, which is very easy to cause damage to the mold body and shorten its life. Finally, the existing hot stamping equipment lacks a matching cooling system and is unable to quickly cool the workpiece after forming.

[0005] The technical solution adopted by the utility model is: a steel plate hot stamping tool for processing bus duct, including a mounting base, on which a lower mold body and an upper mold body that can cooperate with each other to construct a forming mold cavity are supported by a support member, and a first magnetic positioning component and a second magnetic positioning component are respectively arranged on the inner bottom surface of the groove cavity of the lower mold body and the lower surface of the forming protrusion of the upper mold body, wherein the first magnetic positioning component and the second magnetic positioning component can be selectively abutted against different surfaces of the steel plate to be stamped in a counter-positioned manner to position the stamping station of the steel plate to be stamped; a limit frame that can position the initial placement station of the steel plate to be stamped is also arranged on the outer side of the lower mold body; a cooling component that is partially penetrated through the lower mold body and can adjustably cool the stamped steel plate is also arranged on the mounting base.

[0006] According to a preferred embodiment, a first receiving groove for installing the first magnetic positioning component is opened at the bottom of the cavity defined by the lower mold body, and the first magnetic positioning component includes a first supporting block inserted into the first receiving groove, a first elastic member arranged on the surface of the first supporting block and extending to the cavity, and a positioning plate arranged on the first elastic member away from the first support block, and the upper surface of the positioning plate is inlaid with a magnetic positioning member.

[0007] According to a preferred embodiment, a supporting positioning rod is also inserted into the lower surface of the lower mold body, which is threadedly connected to the lower mold body and partially inserted into the first accommodating groove. The inserted front end of the supporting positioning rod is rotatably connected to the surface of the first support block away from the first elastic member.

[0008] According to a preferred embodiment, the upper mold body includes the shaping protrusion, a connecting plate and a positioning edge, wherein the connecting plate is arranged on the upper surface of the shaping protrusion, and the plate edge of the connecting plate is supported on the hydraulic support column; the lower surface of the connecting plate is also provided with a positioning edge which surrounds the shaping protrusion and defines the docking position between the lower mold body and the lower mold body.

[0009] According to a preferred embodiment, a second receiving groove for installing the second magnetic positioning component is opened on the lower surface of the shaping protrusion, the second supporting block of the second magnetic positioning component is placed in the second receiving groove, and the surface of the second supporting block is connected to a second elastic member extending to the outside of the second receiving groove; the axial lower end of the second elastic member is connected to a magnetic positioning plate.

[0010] According to a preferred embodiment, a surface of the second support block away from the second elastic member is also rotatably connected to a threaded positioning rod, and the threaded positioning rod sequentially passes through the shaping protrusion and the connecting plate.

[0011] According to a preferred embodiment, the support member includes a secondary support platform supporting the lower mold body and the limit frame, and a hydraulic support column suspending the upper mold body directly above the lower mold body.

[0012] According to a preferred embodiment, the secondary support platform is provided with a first lifting column and a second lifting column in a manner that can drive the lower mold body and the limit frame to be lifted and lowered synchronously and independently drive the lower mold body to be lifted and lowered; a plurality of the first lifting columns and the hydraulic support column array are supported on the mounting base.

[0013] According to a preferred embodiment, a supporting baffle is provided at the axial upper end of the first lifting column, the second lifting columns are supported in an array on the supporting baffle, and the limiting frame is provided on the supporting baffle in a manner of surrounding the second lifting columns, and the lower mold body is provided at the axial upper end of the second lifting column.

[0014] According to a preferred embodiment, the cooling assembly includes a cooling coil, a connecting pipe and a circulating cooling unit, wherein the cooling coil is arranged inside the lower mold body in a manner surrounding the groove cavity, and the input and output ends of the cooling coil are connected to the circulating cooling unit through the connecting pipe.

[0015] The beneficial effects of the utility model are:

[0016] The lower mold body provided in the present application can cooperate with the upper mold body to construct a forming cavity by means of an upward movement, so that the steel plate positioned and clamped between the lower mold body and the upper mold body by the first magnetic positioning component and the second magnetic positioning component can follow the upward movement of the lower mold body to undergo deformation that matches the forming cavity, and then the steel plate is punched into a workpiece for bus duct production with a specific curved profile. The first magnetic positioning component and the second magnetic positioning component provided in the present application can perform double magnetic positioning on the steel plate that is placed on the lower mold body and pre-positioned by the limit frame, so as to stably limit the centering point of the steel plate during subsequent stamping deformation and displacement, thereby ensuring the accuracy of the steel plate deformation, avoiding the problem of abnormal displacement or shaking of the steel plate after the stamping deformation occurs and it is separated from the limit of the limit frame, resulting in deviations in the size of the formed workpiece, and ensuring that the centering point of the steel plate is always effectively limited to improve the accuracy and stability during deformation, thereby improving the dimensional accuracy of the formed workpiece. The first magnetic positioning assembly and the second magnetic positioning assembly provided in the present application can shrink synchronously during the process of the lower mold body and the upper mold body being connected, so as to be able to perform compression buffering while magnetically positioning, thereby buffering the impact force and vibration during the stamping process, and then relieving the damage to the mold body caused by the hard impact pressure at the end of the stamping process, and improving the working life of the mold body. The synchronous shrinkage of the first magnetic positioning assembly and the second magnetic positioning assembly of the present application can always achieve effective magnetic positioning of the steel plate, thereby ensuring the continuity and stability of the positioning. In the process of completing the stamping and separating the lower mold body from the upper mold body, the first magnetic positioning assembly and the second magnetic positioning assembly can gradually reset and stretch under the action of elastic force, so that the workpiece can be quickly and effectively separated from both the lower mold body and the upper mold body, thereby reducing the disassembly operation after stamping, realizing the rapid demolding of the formed workpiece, and improving the processing efficiency. The cooling assembly provided in the present application can effectively cool the pre-heated steel plate after the stamping is completed, thereby reducing the time required for additional air cooling, and further improving the production efficiency while achieving hot stamping by preheating to ensure the stamping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred steel plate hot stamping tooling for processing bus duct proposed by the utility model;

[0018] Figure 2 It is a top view of a preferred positioning plate and a limiting frame for processing a bus duct proposed by the utility model;

[0019] Figure 3 This is a schematic structural diagram of a preferred first lifting column for processing a bus duct proposed by the utility model when it is rising;

[0020] Figure 4This is a schematic diagram of a structure in which a second lifting column for processing a bus duct is raised and a second magnetic positioning assembly is retracted, which is preferred and proposed by the utility model;

[0021] Figure 5 The utility model discloses a schematic structural diagram of a preferred lower mold body and an upper mold body for processing a bus duct when the mold cavity is formed.

[0022] Reference numerals list

[0023] 1: Mounting base; 2: Support member; 3: Lower mold body; 4: Upper mold body; 5: First magnetic positioning assembly; 6: Second magnetic positioning assembly; 7: Limiting frame; 8: Cooling assembly; 21: Secondary support platform; 22: Hydraulic support column; 31: Slot cavity; 32: First receiving groove; 41: Shaping protrusion; 42: Connecting plate; 43: Positioning edge; 51: First support block; 52: First elastic member; 53: Positioning plate; 54: Magnetic positioning member; 55: Support positioning rod; 61: Second support block; 62: Second elastic member; 63: Magnetic positioning plate; 64: Threaded positioning rod; 81: Cooling coil; 82: Connecting pipe; 83: Circulating cooling unit; 211: First lifting column; 212: Second lifting column; 213: Support partition; 411: Second receiving groove. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be briefly introduced below in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] The technical solution provided by the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In some examples, some implementation methods are not described or are not described in detail because they belong to existing or conventional technologies.

[0026] In addition, the technical features described herein, or the steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can also be combined in any suitable manner in one or more embodiments. For those skilled in the art, it is easy to understand that the steps or operation sequence of the methods related to the embodiments provided herein can also be changed. Any order in the drawings and embodiments is only for illustrative purposes and does not imply a requirement to follow a certain order unless it is explicitly stated that a certain order is required.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, under reasonable circumstances (not constituting a self-contradiction), include direct and indirect connections (couplings).

[0028] The following is a detailed description with reference to the accompanying drawings.

[0029] Example 1

[0030] The present application provides a steel plate hot stamping tool for processing bus duct, which includes a mounting base 1, a support member 2, a lower mold body 3, an upper mold body 4, a first magnetic positioning component 5, a second magnetic positioning component 6, a limit frame 7 and a cooling component 8.

[0031] according to Figure 1-5In a specific embodiment shown, a lower mold body 3 and an upper mold body 4 that can cooperate with each other to form a forming mold cavity are supported on a mounting base 1 through a support member 2. A first magnetic positioning component 5 and a second magnetic positioning component 6 are respectively arranged on the inner bottom surface of the groove cavity 31 of the lower mold body 3 and the lower surface of the shaping protrusion 41 of the upper mold body 4. The first magnetic positioning component 5 and the second magnetic positioning component 6 can be selectively attached to different surfaces of the steel plate to be stamped in a counter-positioned manner to locate the stamping station of the steel plate to be stamped. The first magnetic positioning assembly 5 and the second magnetic positioning assembly 6 can be axially compressed respectively in the process of the lower mold body 3 and the upper mold body 4 docking to construct the forming mold cavity, so as to limit the centering stamping station of the steel plate at all times and buffer the hard impact force of docking by elastic compression, so as to buffer the impact force caused by forcing the steel plate to undergo specific deformation when the mold docks, thereby buffering and shock absorption while continuously positioning, thereby ensuring the stability of the structure of the steel plate undergoing precise deformation, reducing the damage to the mold body caused by the impact, thereby improving the life of the mold body, and simultaneously obtaining a stamping workpiece with accurate deformation position and the size of the formed workpiece meeting the requirements. The outer side of the lower mold body 3 is also provided with a limit frame 7 that can locate the initial placement position of the steel plate to be stamped. A cooling assembly 8 is also provided on the mounting base 1, which is partially penetrated in the lower mold body 3 and can adjustably cool the stamped steel plate. The lower mold body 3 provided in the present application can cooperate with the upper mold body 4 to construct a forming cavity by means of an upward movement, so that the steel plate positioned and clamped between the lower mold body 3 and the upper mold body 4 by the first magnetic positioning component 5 and the second magnetic positioning component 6 can follow the upward movement of the lower mold body 3 to undergo deformation that matches the forming cavity, and then the steel plate is punched into a workpiece for busbar duct production with a specific curved profile. The first magnetic positioning component 5 and the second magnetic positioning component 6 provided in the present application can be placed on the lower mold body 3 and pre-positioned by the limit frame 7 for double magnetic positioning, so as to stably limit the centering point of the steel plate during subsequent stamping deformation and displacement, thereby ensuring the accuracy of the steel plate deformation, avoiding the problem of abnormal displacement or shaking of the steel plate after the stamping deformation occurs and the steel plate is separated from the limit frame 7, resulting in deviation in the size of the formed workpiece, and ensuring that the centering point of the steel plate is always effectively limited to improve the accuracy and stability during deformation, thereby improving the dimensional accuracy of the formed workpiece. The first magnetic positioning assembly 5 and the second magnetic positioning assembly 6 provided in the present application can shrink synchronously during the process of the lower mold body 3 and the upper mold body 4 being connected, so as to perform compression buffering while magnetically positioning, thereby buffering the impact force and vibration during the stamping process, and further relieving the damage to the mold body caused by the hard impact pressure at the end of the stamping process, thereby improving the working life of the mold body. The synchronous shrinkage of the first magnetic positioning assembly 5 and the second magnetic positioning assembly 6 of the present application can always achieve effective magnetic positioning of the steel plate, thereby ensuring the continuity and stability of the positioning.During the process of completing the stamping and separating the lower mold body 3 from the upper mold body 4, the first magnetic positioning assembly 5 and the second magnetic positioning assembly 6 can gradually reset and stretch under the action of elastic force, so that the workpiece can be quickly and effectively separated from the lower mold body 3 and the upper mold body 4, thereby reducing the disassembly operation after stamping, achieving rapid demolding of the formed workpiece, and improving processing efficiency. The cooling assembly 8 provided in the present application can effectively cool the pre-heated steel plate after the stamping is completed, thereby reducing the time required for additional air cooling, and further improving production efficiency while achieving hot stamping by preheating to ensure the stamping quality.

[0032] Preferably, the support member 2 includes a secondary support platform 21 supporting the lower mold body 3 and the limit frame 7, and a hydraulic support column 22 suspending the upper mold body 4 directly above the lower mold body 3. Specifically, the secondary support platform 21 and the hydraulic support column 22 can respectively drive the lower mold body 3 and the upper mold body 4 to move axially so that the lower mold body 3 and the upper mold body 4 are relatively grounded to construct a forming mold cavity. Preferably, the secondary support platform 21 is provided with a first lifting column 211 and a second lifting column 212 in a manner that can drive the lower mold body 3 and the limit frame 7 to be lifted synchronously and independently drive the lower mold body 3 to be lifted. Further preferably, a plurality of first lifting columns 211 and hydraulic support columns 22 are supported in an array on the mounting base 1. Preferably, a support baffle 213 is provided at the axial upper end of the first lifting column 211, and a second lifting column 212 is supported in an array on the support baffle 213. Preferably, the limit frame 7 is arranged on the support baffle 213 in a manner that surrounds the second lifting column 212. Preferably, a lower mold body 3 is provided at the axial upper end of the second lifting column 212. The secondary support platform 21 provided in the present application can synchronously lift the lower mold body 3 and the limit frame 7 so that the pre-limited plate can be doubly magnetically positioned by the first magnetic positioning component 5 and the second magnetic positioning component 6 at the same time, and further drive the lower mold body 3 to rise alone to further complete the stamping process, so as to ensure the positioning accuracy before stamping and the positioning accuracy and stability during the stamping process, thereby ensuring the dimensional accuracy of the formed workpiece and greatly improving the production quality.

[0033] Preferably, a groove cavity 31 capable of defining the outer contour of the workpiece after the steel plate is stamped is provided on the upper surface of the lower mold body 3. Further preferably, a first receiving groove 32 capable of selectively receiving the first magnetic attraction positioning component 5 is provided on the inner bottom surface of the groove cavity 31. Further preferably, the groove cavity depth of the first receiving groove 32 is slightly greater than the length of the compressed first magnetic attraction positioning component 5, so that during the stamping movement, the first magnetic attraction positioning component 5 can gradually retract into the first receiving groove 32 to place it to squeeze the steel plate, causing undesirable deformation of the flat surface of the steel plate.

[0034] Preferably, the upper mold body 4 includes a shaping protrusion 41, a connecting plate 42 and a positioning edge 43. Preferably, the connecting plate 42 is arranged on the upper surface of the shaping protrusion 41. Specifically, the plate edge of the connecting plate 42 is supported on the hydraulic support column 22. Preferably, the lower surface of the connecting plate 42 is also provided with a positioning edge 43 that surrounds the shaping protrusion 41 and defines the docking position between the lower mold body 3 and the upper mold body 4. Preferably, the positioning edge 43 has an inclined side wall so that the lower mold body 3 can be accurately positioned within the range defined by the positioning edge 43 when rising, thereby achieving accurate docking between the lower mold body 3 and the upper mold body 4. The present application can correct the deviation when the lower mold body 3 and the upper mold body 4 are connected by setting the positioning edge 43, thereby ensuring the accuracy of docking.

[0035] Preferably, the first magnetic positioning assembly 5 includes a first support block 51 inserted into the first receiving groove 32, a first elastic member 52 arranged on the surface of the first support block 51 and extending to the groove cavity 31, and a positioning plate 53 arranged on the first elastic member 52 away from the first support block 51, and the upper surface of the positioning plate 53 is inlaid with a magnetic positioning member 54. Preferably, the lower surface of the positioning plate 53 has an extended plate body to limit its stability in axial lifting and lowering, avoid lateral shaking and slipping, and thus ensure the stability of positioning. Preferably, the power-carrying wire of the magnetic positioning member 54 is connected to an external power source by passing through the positioning plate 53 and passing through the first elastic member 52. Further preferably, the wire passing through the first elastic member 52 also passes through the first support block 51 and the lower mold body 3 in sequence. Preferably, the lower surface of the lower mold body 3 is also inserted with a support positioning rod 55 that is threadedly connected to it and partially inserted into the first receiving groove 32. Specifically, the insertion front end of the support positioning rod 55 is rotatably connected to the surface of the first support block 51 away from the first elastic member 52 to limit the position of the first support block 51 in the first receiving groove 32, so as to selectively adjust the initial length of the first elastic member 52 placed in the groove cavity 31 and the initial height of the positioning plate 53 in the groove cavity 31. The support positioning rod 55 provided in the present application can be axially translated by rotation, so that the size of the compression reaction force of the elastic structure with the same compression amount can be adjusted, so that the first elastic member 52 that has deformation fatigue due to repeated use can ensure the size of its compression elastic force by adjusting its extension length, thereby ensuring the accuracy of elastic telescopic positioning and the effectiveness of continuous buffering. The first magnetic attraction positioning assembly 5 provided in the present application can be attached to the surface of the steel plate by magnetic attraction, thereby effectively limiting its relative position with the steel plate, so as to avoid the steel plate from offsetting and shaking during the deformation process, and its elastic directional telescopic structure makes the center point of the steel plate only axially rise and fall during the deformation process, thereby ensuring the accuracy of deformation and stamping stability. In addition, during the compression process of the first magnetic positioning component 5, the reverse elastic supporting force can be increased to buffer the hard impact, so as to improve the stability during stamping, achieve buffering and shock absorption, and extend the life of the mold body.

[0036] Preferably, a second receiving groove 411 for installing the second magnetic positioning assembly 6 is provided on the lower surface of the shaped protrusion 41. Preferably, the second support block 61 of the second magnetic positioning assembly 6 is placed in the second receiving groove 411, and the surface of the second support block 61 is connected to a second elastic member 62 extending to the outside of the second receiving groove 411. Preferably, a magnetic positioning plate 63 is connected to the axial lower end of the second elastic member 62. Preferably, the upper surface of the magnetic positioning plate 63 has an extended plate body to limit the stability of its axial lifting and lowering, avoid lateral shaking and slipping, and thus ensure the stability of positioning. Preferably, the magnetic positioning block 63 can retract into the second receiving groove 411 when the second elastic member 62 is compressed. Specifically, the magnetic positioning block 63 generates a strong electromagnetic force when it is connected to an external power supply through a wire, so as to adsorb on the upper surface of the steel plate to be stamped, thereby limiting the processing position of the steel plate to be stamped. Preferably, the surface of the second support block 61 away from the second elastic member 62 is also rotatably connected to a threaded positioning rod 64. Further preferably, the threaded positioning rod 64 sequentially passes through the shaping protrusion 41 and the connecting plate 42. Specifically, the threaded positioning rod 64 is threadedly connected to the connecting plate 42, thereby adjustably limiting the working position of the second support block 61 in the second receiving groove 411. The threaded positioning rod 64 provided in the present application has the same function and effect as the supporting positioning rod 55, which will not be described in detail here.

[0037] Preferably, the cooling assembly 8 includes a cooling coil 81, a connecting pipe 82 and a circulating cooling unit 83. Preferably, the cooling coil 81 is arranged inside the lower mold body 3 in a manner of surrounding the groove cavity 31. Further preferably, the input end and the output end of the cooling coil 81 are connected to the circulating cooling unit 83 through the connecting pipe 82 to construct a circulating cooling structure with a closed-loop pipeline. Preferably, the part of the connecting pipe 82 outside the lower mold body 3 adopts an elastic retractable tube so that it can change its tube length when the lower mold body 3 is independently lifted and lowered, so as to effectively adapt to different working states and maintain the structure of the closed-loop pipeline. The cooling coil 81 provided in the present application can continuously transfer the heat of the workpiece abutting against the inner wall of the groove cavity 31 to achieve rapid cooling and cooling of the workpiece. The circulating cooling unit 83 adopts a conventional cooling water circulation heat dissipation device so that it can continuously cool the cooling water in the circulation loop to ensure the effect of the cooling system.

[0038] The working principle of this application is:

[0039] In the initial state, the first magnetic positioning component 5 extends to the slot cavity 31 and is flush with the opening surface of the slot cavity 31. At this time, the height of the limit frame 7 is slightly higher than the lower mold body 3, so that it can quickly and accurately place the steel plate to be stamped and preheated on the lower mold body 3, and the positioning plate 53 of the first magnetic positioning component 5 is against the lower surface of the steel plate, so that the magnetic positioning member 54 is magnetically positioned on the lower surface of the steel plate when powered on. The lower mold body 3 and the limit frame 7 rise synchronously under the action of the first lifting column 211, so that the magnetic positioning plate 63 of the second magnetic positioning component 6 is against the upper surface of the steel plate. At this time, the power is turned on to generate electromagnetic force to effectively limit the centering point of the steel plate to coincide with the central axis of the lower mold body 3 and the upper mold body 4, and during the stamping process, this point always remains in a horizontal position unchanged, and only axial lifting and lowering movement occurs.

[0040] The second lifting column 212 independently drives the lower mold body 3 to further move upward, and the second elastic member 62 shortens and gradually retracts to the second receiving groove 411, so that in the further rising process, the shaped protrusion 41 is placed in the groove cavity 31, so that the shaped protrusion 41 is pressed against the surface of the steel plate, causing the plate to undergo a specific deformation, and in the above process, the first elastic member 52 is synchronously compressed and retracted into the first receiving groove 32, and when the shaped protrusion 41 is completely placed in the groove cavity 31, a complete bent workpiece is constructed. In the above stamping process, the first magnetic positioning component 5 and the second magnetic positioning component 6 are always adsorbed on the surface of the steel plate to limit the movement of the steel plate on the horizontal plane, so that the centering position of the steel plate only undergoes axial lifting and lowering.

[0041] After stamping is completed, the heat carried by the formed workpiece is transferred by starting the cooling assembly 8, so that it is cooled. After cooling is completed, the lower mold body 3 descends. During this process, the first magnetic attraction positioning assembly 5 and the second magnetic attraction positioning assembly 6 both reset and rebound to force the formed workpiece to separate from the groove cavity 31 and the shaping protrusion 41, thereby realizing demoulding of the workpiece, thereby improving processing efficiency and processing quality.

[0042] The present utility model is not limited to the above optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope of the claims of the present utility model fall within the protection scope of the present utility model. Those skilled in the art should understand that the present utility model specification and its drawings are illustrative and do not constitute limitations on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A hot stamping tool for processing bus ducts, comprising a mounting base (1), characterized in that: A lower mold body (3) and an upper mold body (4) which can cooperate with each other to form a forming mold cavity are supported on the mounting base (1) through a support member (2). A first magnetic attraction positioning component (5) and a second magnetic attraction positioning component (6) are respectively arranged on the inner bottom surface of the groove cavity (31) of the lower mold body (3) and the lower surface of the shaping protrusion (41) of the upper mold body (4), wherein: The first magnetic positioning component (5) and the second magnetic positioning component (6) are selectively attached to different surfaces of the steel plate to be stamped in a counter-positioned manner to locate the stamping station of the steel plate to be stamped; The outer side of the lower mold body (3) is also provided with a limit frame (7) capable of positioning the initial placement position of the steel plate to be punched; The mounting base (1) is also provided with a cooling assembly (8) which is partially inserted into the lower mold body (3) and can adjustably cool the stamped steel plate.

2. The hot stamping tool for processing bus duct according to claim 1, characterized in that: A first receiving groove (32) for installing the first magnetic attraction positioning component (5) is provided at the bottom of the groove cavity (31) defined by the lower mold body (3). The first magnetic positioning assembly (5) comprises a first support block (51) inserted into the first receiving groove (32), a first elastic member (52) arranged on the surface of the first support block (51) and extending to the groove cavity (31), and a positioning plate (53) arranged on the first elastic member (52) away from the first support block (51), and the upper surface of the positioning plate (53) is inlaid with a magnetic positioning member (54).

3. The hot stamping tool for processing bus duct according to claim 2, characterized in that: The lower surface of the lower mold body (3) is also provided with a support positioning rod (55) threadedly connected thereto and partially inserted into the first receiving groove (32). The insertion front end of the support positioning rod (55) is rotatably connected to the surface of the first support block (51) away from the first elastic member (52).

4. The hot stamping tool for processing bus duct according to claim 3, characterized in that: The upper mold body (4) comprises the shaping protrusion (41), a connecting plate (42) and a positioning edge (43), wherein: The connecting plate (42) is arranged on the upper surface of the shaping protrusion (41), and the plate edge of the connecting plate (42) is supported on the hydraulic support column (22); The lower surface of the connecting plate (42) is also provided with a positioning edge (43) surrounding the shaping protrusion (41) and defining a docking station between the lower mold body (3) and the lower mold body.

5. The hot stamping tool for processing bus duct according to claim 4, characterized in that: A second receiving groove (411) for installing the second magnetic attraction positioning component (6) is provided on the lower surface of the shaping protrusion (41). The second support block (61) of the second magnetic positioning assembly (6) is placed in the second receiving groove (411), and the surface of the second support block (61) is connected to a second elastic member (62) extending to the outside of the second receiving groove (411); The axial lower end of the second elastic member (62) is connected to a magnetic positioning plate (63).

6. The hot stamping tool for processing bus duct according to claim 5, characterized in that: A surface of the second support block (61) away from the second elastic member (62) is also rotatably connected to a threaded positioning rod (64), and the threaded positioning rod (64) sequentially passes through the shaping protrusion (41) and the connecting plate (42).

7. The hot stamping tool for processing bus duct according to claim 6, characterized in that: The support member (2) comprises a secondary support platform (21) supporting the lower mold body (3) and the limit frame (7), and a hydraulic support column (22) suspending the upper mold body (4) directly above the lower mold body (3).

8. The hot stamping tool for processing bus duct according to claim 7, characterized in that: The secondary support platform (21) is provided with a first lifting column (211) and a second lifting column (212) in a manner that can drive the lower mold body (3) and the limit frame (7) to be lifted synchronously and independently drive the lower mold body (3) to be lifted; A plurality of the first lifting columns (211) and the hydraulic support columns (22) are supported in an array on the mounting base (1).

9. The hot stamping tool for processing bus duct according to claim 8, characterized in that: A supporting baffle (213) is provided at the axial upper end of the first lifting column (211), the second lifting columns (212) are supported in an array on the supporting baffle (213), and the limiting frame (7) is arranged on the supporting baffle (213) in a manner of surrounding the second lifting columns (212). The lower mold body (3) is arranged at the axial upper end of the second lifting column (212).

10. The hot stamping tool for processing bus duct according to claim 9, characterized in that: The cooling assembly (8) comprises a cooling coil (81), a connecting pipe (82) and a circulating cooling unit (83), wherein: The cooling coil (81) is arranged inside the lower mold body (3) in a manner of surrounding the groove cavity (31), and the input end and the output end of the cooling coil (81) are connected to the circulating cooling unit (83) through the connecting pipe (82).

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