CN210497965U - Bending die applied to rail transit vehicle body processing - Google Patents
Bending die applied to rail transit vehicle body processing Download PDFInfo
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- CN210497965U CN210497965U CN201921341367.4U CN201921341367U CN210497965U CN 210497965 U CN210497965 U CN 210497965U CN 201921341367 U CN201921341367 U CN 201921341367U CN 210497965 U CN210497965 U CN 210497965U
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Abstract
The utility model discloses a be applied to mould of bending of track traffic automobile body processing belongs to the mould technical field of bending. The utility model discloses an upper die comprises an upper die body and an upper die tool bit arranged at the bottom of the upper die body, wherein a fixed module is arranged on one side of the upper die body along the height direction; the lower die body is close to one side of the fixed module and is provided with a guide module in a laminating mode along the height direction, one side, far away from the lower die body, of the guide module is attached to the fixed module, an installation cavity is further formed in the upper end face of the lower die body, a workpiece movement assisting portion is hinged in the installation cavity, the cross section of the workpiece movement assisting portion is in a round shape with a notch, and the top of the workpiece movement assisting portion extends to exceed the upper end face of the lower die body. The utility model aims to overcome current mould of bending resistance when bending to the automobile body panel beating is too big, and easily to the not enough of automobile body panel beating surface strain, resistance when can reducing the automobile body panel beating and bend alleviates the strain on automobile body panel beating structure surface.
Description
Technical Field
The utility model relates to a mould technical field of bending, more specifically say, relate to a be applied to mould of bending of track traffic automobile body processing.
Background
With the rapid development of the rail transit industry, the demand of the rail transit vehicle body sheet metal structural member is increased year by year, and the bending die of the rail transit vehicle body sheet metal structural member is taken as key equipment of a vehicle body processing technology, is widely applied to the manufacturing fields of rail transit vehicle bodies such as motor cars, high-speed rails and subways and various vehicles, and has a wide application space.
The bending precision and the surface quality of the vehicle body structural part are related to the safety reliability, the attractiveness and the service life of a vehicle, when a traditional bending die bends a vehicle body metal plate, an upper die moves downwards to contact the vehicle body metal plate, great pressure is applied to a contact point (supporting point) of the vehicle body metal plate and a lower die, when the upper die continues to move downwards, the vehicle body metal plate slides downwards and bends under the action of the pressure, slight strain is easily formed on the surface of the vehicle body metal plate, and the yield of products is influenced. Therefore, it is a constantly pursued goal in the industry to design a bending die which can not only reduce the resistance during bending, but also reduce the strain on the sheet metal of the vehicle body.
Through retrieval, a large number of patents have been published about bending type dies, such as chinese patent application No.: 201710288762X, entitled: the application discloses a bending die, which comprises a pressing block, a base, a convex die core and two symmetrically arranged bending knife blocks; wherein, the pressing block is fixedly arranged on the upper die holder; the base is fixedly arranged on the lower die base, a supporting seat is fixedly arranged on the base, a groove is formed in the middle of the supporting seat, and two ends of the supporting seat are provided with opening bars; the convex mold core is fixedly arranged in the groove, and the width of the convex mold core is smaller than that of the groove; two bending knife blocks are rotatably connected with the opening gear, each bending knife block comprises a forming end and a fixed end, the forming ends are arranged below the pressing blocks, and the fixed ends are connected with the base through springs.
Also as in chinese patent application No.: 2017218069848, the name of invention creation is: the utility model provides a mould of bending, this application discloses a mould of bending, includes the lower mould, sets up in the last mould of lower mould top, and the upper surface of lower mould has the arc recess, and the both sides of arc recess are provided with the gyro wheel, go up the terminal surface formation arc terminal surface of mould and lower mould contact.
Both the two schemes are good exploration for the bending die, but still have a further improved space, and the research on the bending die in the industry is never stopped.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome current mould of bending resistance when bending to the automobile body panel beating is too big, and easily to the not enough of automobile body panel beating surface strain, provides a be applied to mould of bending of track traffic car body processing, resistance when can reducing the automobile body panel beating and bend alleviates pulling on automobile body panel beating structure surface, and then improves the machining precision.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a be applied to bending mould of track traffic automobile body processing, including the upper die and the bed die that cooperate and use, the upper die includes the upper die body and sets up the last mould tool bit in upper die body bottom, and one side of upper die body is provided with fixed module along the direction of height laminating, and the bottom of fixed module extends beyond the bottom of upper die body; the lower die comprises a lower die body, a guide module is arranged on one side, close to the fixed module, of the lower die body in a fit mode along the height direction, one side, far away from the lower die body, of the guide module is attached to the inner side of the fixed die body, an installation cavity is further formed in the upper end face of the lower die body, a workpiece moving assisting portion is hinged in the installation cavity, the cross section of the workpiece moving assisting portion is in a round shape with a notch, and the top of the workpiece moving assisting portion extends to exceed the upper end face of the lower die body.
As a further improvement, the top of the lower die body near one side of the guiding module is provided with a limiting module, and the limiting module is located between the guiding module and the workpiece power-assisting part.
As a further improvement of the utility model, the top of the limiting module is parallel and level with the upper end surface of the workpiece power-assisted part.
As a further improvement of the utility model, one side of the limiting module, which is close to the workpiece power-assisted part, is provided with an arc-shaped groove matched with the rotation track of the workpiece power-assisted part.
As a further improvement of the utility model, the end part of the workpiece power-assisted part is provided with a reset tension spring, and one end of the reset tension spring, which is far away from the workpiece power-assisted part, is fixed on the inner wall of the installation cavity.
As a further improvement of the utility model, the workpiece power-assisting part is provided with a through hole, a rotating shaft is arranged in the through hole, and the two ends of the rotating shaft are arranged on the inner wall of the installation cavity.
As a further improvement of the utility model, the notch at the top of the power-assisted part of the workpiece faces to the right upper part, and the connecting line at the two sides of the notch is in the horizontal direction.
As a further improvement of the utility model, the bottom of the upper die cutter head is a plane, one side of the bottom of the upper die cutter head, which is close to the fixed module, is a cutter point with a cross section of right triangle, and the acute angle of the bottom plane of the cutter point is β smaller than the included angle between the notches at the top of the power-assisted part of the workpiece.
As a further improvement, the upper die further comprises a clamping part installed on the bending machine, and the clamping part is located on the upper part of the upper die body.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a be applied to mould of bending of track traffic automobile body processing, an installation cavity has been seted up downwards to the up end of lower mould body, and the hinge is equipped with work piece helping portion in the installation cavity, and this work piece helps the transversal breach circular of personally submitting of portion, and the top of work piece helping portion extends the up end that surpasses the lower mould body. During initial state, work piece power-assisted portion top is the horizontality, to wait to process the automobile body panel beating and place the top at work piece power-assisted portion, will go up the breach face that the mould tool bit aimed at work piece power-assisted portion, under the drive of bender, impel the mould tool bit downwards, work piece power-assisted portion rotates clockwise under the extrusion of last mould tool bit, drive the panel beating simultaneously and bend, accomplish the processing of bending to the panel beating, the rotation through work piece power-assisted portion drives the panel beating and bends the processing, the resistance of bending of panel beating has been reduced, the wearing and tearing to last mould tool bit have been alleviateed, the life of the mould of bending has been improved.
(2) The utility model discloses a be applied to mould of bending of track traffic automobile body processing, the bed die includes the lower mould body, one side that the bed die body is close to fixed module is provided with the direction of height laminating along the direction of height, the last one side of keeping away from the bed die body of direction module is laminated mutually with fixed module, fixed module reciprocates along the direction of height of direction module under the drive of bender, fixed module pastes tight use with the cooperation of direction module, convenient last mould is straight line up-and-down motion along the direction module under the bender drive, guarantee all the time that the route of marcing of last mould is on a straight line, and direction module can just trade the size of a dimension according to concrete user demand, can adjust the distance between bed die left side and the last mould tool bit, be applicable to the processing requirement of bending of not unidimensional automobile body.
(3) The utility model discloses a bending die applied to processing of a rail transit vehicle body, wherein a reset tension spring is arranged at the end part of a workpiece power-assisted part, and one end of the reset tension spring, which is far away from the workpiece power-assisted part, is fixed on the inner wall of an installation cavity; the state of the reset tension spring is an initial natural telescopic state, when the workpiece assisting part rotates clockwise under the extrusion action of the upper die cutter head, the reset tension spring is stretched or compressed along with the upward rotation of the workpiece assisting part, at the moment, the bending treatment on the metal plate is completed, the upper die cutter head moves upward under the driving of the bending machine, the pressing on the workpiece assisting part is gradually released, when the upper die cutter head is separated from the workpiece assisting part which is not extruded any more, the workpiece assisting part rotates under the elastic action of the reset tension spring and resets to an original state, and the reset tension spring ensures that the workpiece assisting part can automatically recover to the original state after the bending is completed, so that the influence on the next bending treatment cannot be caused.
(4) The utility model discloses a be applied to mould of bending of track traffic automobile body processing, spacing module is close to one side of work piece helping portion and sets up the rotation orbit assorted arc recess with work piece helping portion, and the outside of work piece helping portion can be at arc recess internal rotation promptly, has not only realized helping the spacing of portion to the work piece, and does not influence the free rotation of work piece helping portion.
Drawings
Fig. 1 is a schematic structural view of a bending die applied to processing a rail transit vehicle body according to the present invention;
FIG. 2 is a schematic view of the structure of the upper mold in the present invention;
fig. 3 is a schematic structural view of the lower mold in the present application.
The reference numerals in the schematic drawings illustrate:
100. an upper die; 101. fixing the bolt; 110. a clamping part; 120. an upper die body; 130. an upper die cutter head; 140. a fixed module; 200. a lower die; 210. a lower die body; 220. a workpiece power assist section; 221. a rotating shaft; 222. a return tension spring; 230. a limiting module; 240. and a guide module.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following examples.
Example 1
The bending die applied to machining of the rail transit vehicle body adopts a multi-angle flexible bending process for complex metal plates such as vehicle bodies, the upper pressing and the lower pressing are changed into lateral pressing bending, the force application space and angle are increased for bending operation, and the requirement that the die carries out complex motion is met. The bending action part is finished at the inner side of the die, and the long side part does not move and change in any mode because the sheet is fixed and floats downwards, so that the problem of warping of the traditional bending sheet is solved, and the flatness of a bent piece is improved. The lower die adopts a roller structure, so that the traditional sliding friction between the workpiece and the lower die is changed into rolling friction, the scratch on the surface of the workpiece is eliminated, the surface quality of the workpiece and the bending operation safety are improved, the bending operation time is reduced, and the production efficiency is improved. Specifically, with reference to fig. 1 to fig. 3, the bending die applied to processing of rail transit vehicle bodies of the present embodiment includes an upper die 100 and a lower die 200 which are used in cooperation, where the upper die 100 includes an upper die body 120 and an upper die bit 130 disposed at the bottom of the upper die body 120, a fixing module 140 is disposed on one side of the upper die body 120 along the height direction, and the bottom of the fixing module 140 extends beyond the bottom of the upper die body 120, specifically, as shown in fig. 2, a fixing module 140 is disposed on the left side of the upper die body 120 in the present embodiment, and the fixing module 140 is fixed on the upper die body 120 through a fixing bolt 101, and the fixing module 140 can be replaced with different sizes according to actual use requirements. As shown in fig. 3, the lower mold 200 of the present embodiment includes a lower mold body 210, a guiding module 240 is disposed on a side of the lower mold body 210 close to the fixed module 140 along a height direction, and a side of the guiding module 240 away from the lower mold body 210 is attached to an inner side of the fixed module 140, that is, a left side of the guiding module 240 is attached to a right side of the fixed module 140 as shown in fig. 1. Wherein fixed module 140 reciprocates along direction of height 240 direction of direction under the drive of bender, fixed module 140 pastes tightly the use with the cooperation of direction module 240, mould 100 is the straight line up-and-down motion along direction module 240 under the bender drive in the convenience, the route of marcing of mould 100 is guaranteed on a straight line all the time, and direction module 240 can just trade the size of a dimension according to concrete user demand, can adjust the distance between the left side of bed die 200 and the last mould tool bit 130, be applicable to the processing requirement of bending of the panel beating of not unidimensional. The installation cavity (not drawn in the figure) has still been seted up to the up end of lower mould body 210 in this embodiment, specifically, an installation cavity has been seted up downwards to the up end of lower mould body 210 in this embodiment, this installation cavity is open design, surround all around and be equipped with the inner wall, the articulated work piece portion 220 that helps is equipped with in the installation cavity, specifically, set up the through-hole (not drawn in the figure) in this embodiment on the work piece portion 220 that helps, install pivot 222 in the through-hole, install on the front and back both sides inner wall of installation cavity at the both ends of pivot 222, work piece portion 220 that helps can revolute pivot 222 and rotate, work piece portion 220 that helps freely rotates in the installation cavity promptly. The cross section of the workpiece auxiliary portion 220 is a circular shape with a notch, the center line direction of the notch is the radial direction of the cross section of the workpiece auxiliary portion 220, and the top of the workpiece auxiliary portion 220 extends beyond the upper end surface of the lower die body 210. Wherein the top gap of the workpiece motion assisting part 220 faces upward, and the connecting line of the two sides of the gap is in horizontal direction. In an initial state, the workpiece assisting part 220 is in a state shown in fig. 3, the top of the workpiece assisting part is in a horizontal state, a sheet metal of a vehicle body to be processed is placed on the top of the workpiece assisting part 220, the upper die cutter head 130 is aligned to the notch surface of the workpiece assisting part 220, the upper die cutter head 130 is pushed downwards under the driving of the bending machine until the sheet metal contacts the surface of the sheet metal plate, the sheet metal plate is slowly pushed, the workpiece assisting part 220 rotates clockwise under the extrusion effect of the upper die cutter head 130, and meanwhile, the sheet metal plate is driven to be bent, and the bending processing of the sheet metal plate is completed. The metal plate is driven to be bent through the rotation of the workpiece power-assisted part 220, so that the bending resistance of the metal plate is reduced, the abrasion to the upper die cutter head 130 is reduced, and the service life of the bending die is prolonged.
As shown in fig. 3, in the present embodiment, the included angle between the notches of the workpiece assisting portion 220 is α, which can be adjusted according to the angle at which the sheet metal structural member of the vehicle body needs to be bent, as shown in fig. 1 and 3, in the present embodiment, two return tension springs 221 are disposed at the end of the workpiece assisting portion 220, and one end of the return tension spring 221, which is far away from the workpiece assisting portion 220, is fixed on the inner wall of the mounting cavity, specifically, two return tension springs 221 are disposed at the front and rear sides of the workpiece assisting portion 220, respectively, and are symmetrically designed to ensure the stability of the movement of the workpiece assisting portion 220 and to ensure sufficient retraction force on the workpiece assisting portion 220, as shown in fig. 3, the return tension springs 221 are in an initial natural extension state, when the workpiece assisting portion 220 rotates clockwise under the pressing action of the upper die bit 130, the return tension springs 221 are extended or compressed along with the upward rotation of the workpiece assisting portion 220, as shown in fig. 1, the return tension springs are in an initial natural extension state, and when the workpiece assisting portion 220 is in the original rotation state, the return tension springs are in which the original elastic return tension springs are extended or compressed state, the bending process is completed, the upper die bit 130 is gradually moved upward under the release drive of the bending assisting portion, and the bending machine tool bit 220, and the return tension springs gradually returns to the elastic return tension springs.
As shown in fig. 3, in the present embodiment, a position-limiting module 230 is disposed at the top of the lower die body 210 near the guiding module 240, and the position-limiting module 230 is located between the guiding module 240 and the workpiece assisting part 220. Specifically, in the present embodiment, the limiting module 230 is located at the left side of the workpiece assisting portion 220 and performs a limiting function on the workpiece assisting portion 220, the limiting module 230 is fixed at the top of the lower die body 210 by the fixing bolt 101, wherein the size of the limiting module 230 can be determined according to the size and the position of the workpiece assisting portion 220. The top of the limiting module 230 is flush with the upper end face of the workpiece assisting part 220, so that the metal plate of the vehicle body to be processed is supported conveniently. In this embodiment, an arc-shaped groove (not shown) matched with the rotation track of the workpiece assisting part 220 is formed on one side of the limiting module 230 close to the workpiece assisting part 220, that is, the outer side of the workpiece assisting part 220 can rotate in the arc-shaped groove, so that the limiting of the workpiece assisting part 220 is realized, and the free rotation of the workpiece assisting part 220 is not affected.
As shown in fig. 2, the bottom of the upper die tool tip 130 in this embodiment is a plane, which facilitates downward extrusion processing of a metal plate, one side of the bottom of the upper die tool tip 130, which is close to the fixing module 140, is a tool tip with a cross section in a right triangle, and an acute angle of the bottom plane of the tool tip is β smaller than an included angle α between notches at the top of the workpiece movement assisting portion 220, which not only facilitates extrusion of the upper die tool tip 130 into the notch plane of the workpiece movement assisting portion 220, but also enables a contact surface of the upper die tool tip 130 to be relatively sharp, which enables bending processing of the metal plate to be better achieved.
The specific use process of this embodiment is as follows: first, the clamping portion 110 of the upper die 100 is installed on the bending machine, and the bottom of the lower die 200 is fixed on the die base of the bending machine, all of which are fixed by bolts. Then, selecting a fixing module 140 with a proper size to be installed on one side of the upper die body 120, aligning the upper die cutter head 130 to a notch at the top of the workpiece assisting part 220, and selecting a guide module 240 and a limiting module 230 with a proper size to be installed on the lower die body 210; and then, mounting the metal plate of the vehicle body to be processed on the top of the workpiece movement assisting part 220, starting a bending machine to drive the upper die cutter head 130 to move downwards to approach the metal plate of the vehicle body to be processed, slowly feeding the upper die cutter head 130 downwards to extrude the metal plate of the vehicle body and the workpiece movement assisting part 220 when the metal plate surface is contacted, rotating the workpiece movement assisting part 220 clockwise under the extrusion action of the upper die cutter head 130, further bending the metal plate of the vehicle body, and finishing the bending processing. At this time, the bending machine drives the upper die cutter head 130 to gradually get away from the workpiece movement assisting portion 220, the workpiece movement assisting portion 220 rotates under the elastic action of the return tension spring 221, and returns to the original state, and the bending of the workpiece is completed.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a be applied to mould of bending of track traffic automobile body processing, includes last mould (100) and bed die (200) that the cooperation was used, its characterized in that: the upper die (100) comprises an upper die body (120) and an upper die cutter head (130) arranged at the bottom of the upper die body (120), one side of the upper die body (120) is provided with a fixing module (140) in a fitting mode along the height direction, and the bottom of the fixing module (140) extends to exceed the bottom of the upper die body (120); the lower die (200) comprises a lower die body (210), one side, close to the fixed module (140), of the lower die body (210) is provided with a guide module (240) in a fit mode along the height direction, one side, far away from the lower die body (210), of the guide module (240) is in fit with the inner side of the fixed module (140), an installation cavity is further formed in the upper end face of the lower die body (210), a workpiece movement assisting portion (220) is hinged in the installation cavity, the cross section of the workpiece movement assisting portion (220) is in a notched circular shape, and the top of the workpiece movement assisting portion (220) extends to exceed the upper end face of the lower die body (210).
2. The bending die applied to machining of the rail transit car body according to claim 1, wherein the bending die comprises: the top of one side of the lower die body (210) close to the guide module (240) is provided with a limiting module (230), and the limiting module (230) is positioned between the guide module (240) and the workpiece power assisting part (220).
3. The bending die applied to machining of the rail transit car body according to claim 2, wherein the bending die comprises: the top of the limiting module (230) is flush with the upper end face of the workpiece power-assisted part (220).
4. The bending die applied to machining of the rail transit car body according to claim 3, wherein the bending die comprises: one side of the limiting module (230) close to the workpiece power-assisted part (220) is provided with an arc-shaped groove matched with the rotation track of the workpiece power-assisted part (220).
5. The bending die applied to machining of the rail transit car body according to claim 1, wherein the bending die comprises: the end part of the workpiece power assisting part (220) is provided with a reset tension spring (221), and one end of the reset tension spring (221) far away from the workpiece power assisting part (220) is fixed on the inner wall of the mounting cavity.
6. The bending die applied to machining of the rail transit car body according to claim 1, wherein the bending die comprises: the workpiece power-assisted part (220) is provided with a through hole, a rotating shaft (222) is arranged in the through hole, and two ends of the rotating shaft (222) are arranged on the inner wall of the mounting cavity.
7. The bending die applied to machining of the rail transit car body according to claim 1, wherein the bending die comprises: the gap at the top of the workpiece motion assisting part (220) faces to the right upper side, and the connecting line at the two sides of the gap is in the horizontal direction.
8. The bending die applied to machining of the rail transit car body according to claim 7, wherein the bottom of the upper die cutter head (130) is a plane, one side of the bottom of the upper die cutter head (130), which is close to the fixing module (140), is a cutter point with a right-angled triangle-shaped cross section, and an acute angle of the bottom plane of the cutter point is β smaller than an included angle between notches at the tops of the work-piece assisting parts (220).
9. The bending die applied to machining of the rail transit car body according to claim 1, wherein the bending die comprises: the upper die (100) further comprises a clamping part (110) installed on the bending machine, and the clamping part (110) is located on the upper portion of the upper die body (120).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921341367.4U CN210497965U (en) | 2019-08-16 | 2019-08-16 | Bending die applied to rail transit vehicle body processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921341367.4U CN210497965U (en) | 2019-08-16 | 2019-08-16 | Bending die applied to rail transit vehicle body processing |
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| CN210497965U true CN210497965U (en) | 2020-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449517A (en) * | 2019-08-16 | 2019-11-15 | 安徽力源数控刃模具制造有限公司 | A kind of Bending Mould applied to rail transit vehicle body processing |
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2019
- 2019-08-16 CN CN201921341367.4U patent/CN210497965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449517A (en) * | 2019-08-16 | 2019-11-15 | 安徽力源数控刃模具制造有限公司 | A kind of Bending Mould applied to rail transit vehicle body processing |
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