CN220112035U

CN220112035U - High-strength upturning mechanism

Info

Publication number: CN220112035U
Application number: CN202321577986.XU
Authority: CN
Inventors: 柴岩岩
Original assignee: Tianjin Motor Dies Co Ltd
Current assignee: Tianjin Motor Dies Co Ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-12-01
Anticipated expiration: 2033-06-20

Abstract

The utility model discloses a high-strength upturning mechanism which comprises a mounting seat, a driving mechanism, a transmission roller, a die insert and a die seat, wherein the transmission roller is in sliding fit with a support rolling groove arranged at the bottom of the mounting seat; the transmission roller shaft of the upturning mechanism is matched with the supporting chute to realize lever type transmission on two sides, the supporting structure changes the traditional three-point bearing mode of the lever, the outer peripheral surface of the transmission roller shaft is uniformly stressed, the shearing action strength is small, the bearing area is large, the bearing capacity is higher, the structural strength is higher, the abrasion is smaller, and the problem that the fit clearance is overlarge due to abrasion, thereby causing abnormal noise in transmission is also solved.

Description

High-strength upturning mechanism

Technical Field

The utility model relates to the technical field of automobile flanging dies, in particular to a high-strength upturning mechanism.

Background

In the processing of automobile sheet metal parts, a lever type upturning mechanism is generally adopted to carry out flanging treatment on the sheet metal parts, wherein the lever mechanism plays roles of supporting an insert seat and flanging motion transmission, two ends of the lever mechanism are respectively acted by driving force and flanging reaction force, the middle part of the lever mechanism is supported through a rotating shaft, the lever mechanism of the structure has small supporting action area and insufficient structural strength, and faults such as bending, bending deformation, shaft hole abrasion and the like easily occur in the working process or after long-term working, so that the problems of abnormal working noise and incapability of effectively and accurately transmitting lamps are caused.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a high-strength upturning mechanism so as to solve the problems in the prior art.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the utility model provides a high strength turns up mechanism, including the mount pad, actuating mechanism, the driving roller, die insert and die holder, the driving roller is located the mount pad bottom, and with the support rolling groove sliding fit that the mount pad bottom set up, actuating mechanism installs in mount pad one side, and through the actuating lever mounting hole guided movement that sets up on the mount pad, actuating mechanism is located the one side top of driving roller axis, its end is connected with one side of driving roller in order to transmit the driving force, the die holder is installed in the opposite side of mount pad, and through the guide structure guided movement that sets up on the mount pad, die insert fixed mounting is on the die holder, the below of die holder is provided with the follower that is located under the die insert, the follower is located the opposite side top of driving roller axis, it is connected with the opposite side of driving roller axis, in order to rotate along with the driving roller and take place with actuating mechanism.

Preferably, the driving roller is in a crescent shape with a symmetrical structure, and the longitudinal section area of the driving roller is gradually reduced from the middle part to the two ends.

Further preferably, the drive mechanism comprises a drive rod, a drive guide block and a drive slide block in linear sliding fit with the drive guide block, and the drive slide block is rotatably connected with the transmission roller.

Further preferably, the driven piece is a flanging sliding block, the lower end face of the female die seat is provided with a transmission sliding groove positioned right above the flanging sliding block, the flanging sliding block is arranged in the transmission sliding groove in a sliding manner, and the flanging sliding block is rotatably connected with the transmission rolling shaft.

Further preferably, the lower end surfaces of the driving slide block and the flanging slide block are both convex to form a convex surface, the upper end surfaces of two sides of the driving roller are milled to form two symmetrical slide block grooves through corners, the inner groove surfaces of the slide block grooves are arc surfaces, and the driving slide block and the flanging slide block are respectively connected with the slide block grooves in a sliding fit manner.

Further preferably, the driving mechanism is provided with a driving spring which is sandwiched between the lower end of the driving lever mounting hole and the upper end face of the driving guide block.

Further preferably, the guide structure comprises two guide grooves and guide posts, the two guide grooves are formed in two side walls of the mounting seat and symmetrically located on two sides of the guide posts, the guide posts are formed by downwards extending the top of the mounting seat, correspondingly, guide protrusions which are in sliding fit with the guide grooves and guide holes for inserting the guide posts are arranged on the die holder, a rollback spring is sleeved on the guide posts, and the rollback spring is pressed between the top of the mounting seat and the bottom surface of the guide holes.

It is further preferred that the stiffness coefficient of the retraction spring is greater than the stiffness coefficient of the drive spring.

Compared with the prior art, the high-strength upturning mechanism has the following beneficial effects:

1. the upward turning mechanism adopts a rotating shaft type structure without pin shaft connection, the transmission roller is matched with the supporting sliding groove to realize lever type transmission on two sides, compared with the lever type structure with pin shaft connection, the supporting sliding groove is provided with the transmission roller along the transmission surface, the supporting structure changes the three-point stress mode of the traditional lever type structure, the outer peripheral surface of the transmission roller is uniformly stressed, the shearing action strength is small, the stress area is large, thus the structure has higher loading capacity, the structure strength is higher, the abrasion is smaller, and in addition, the structure also solves the problem that the matching clearance is overlarge due to abrasion, thereby causing abnormal noise in transmission;

2. the transmission roller is of a crescent structure, and the deflection resistance and the deformation resistance of the transmission roller are stronger; the driving mechanism and the driven piece are in contact connection with the driving roller through sliding surfaces, and the driving is realized through a sliding block with linear sliding freedom degree, so that the rotation of the driving roller is converted into the vertical linear motion of the die holder;

3. under the action of the driving spring force, the upward turning mechanism keeps an ideal sliding fit state with the sliding block groove all the time in the upward turning and retreating processes, and the phenomena of knocking damage of the driving sliding block or bending of the driving rod caused by jumping and disengaging are avoided.

Drawings

FIG. 1 is a perspective view of the structure of the upturning mechanism of the present utility model;

FIG. 2 is a cross-sectional view of the flip-up mechanism of the present utility model taken along a central plane of symmetry;

FIG. 3 is an exploded view of the assembled structure of the flip-up mechanism of the present utility model;

fig. 4 is an internal structural view of the mount of fig. 1.

In the figure: 1. a mounting base; 11. a support insert; 111. a supporting rolling groove; 12. a drive mounting section; 121. a driving rod mounting hole; 13. a female die mounting part; 131. a guide post; 132. a guide groove; 2. a driving mechanism; 21. a driving rod; 22. a drive guide block; 23. driving a sliding block; 3. a die insert; 4. a female die holder; 41. a die mounting part; 411. a transmission chute; 42. a flange guide part; 421. a guide protrusion; 422. a guide hole; 43. a flanging sliding block; 5. a drive roller; 51. a slider groove; 6. a retraction spring; 7. and a drive spring.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only preferred embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The high-strength upturning mechanism shown in figures 1-4 adopts a rotating shaft structure, one end of a transmission roller 5 is pressed down by a driving mechanism 2, the other end of the transmission roller 5 moves upwards to drive a die holder 4 to move upwards, so that a die insert 3 moves upwards relative to a male die to finish upturning processing of a sheet metal part, a support insert 11 is embedded at the bottom of a mounting seat 1, a support rolling groove 111 is formed in the support insert 11, the support rolling groove 111 is provided with an intrados surface in sliding fit with the peripheral surface of the transmission roller 5, one side of the mounting seat 1 is provided with a driving mounting part 12, a driving rod mounting hole 121 is formed in the driving seat for mounting the driving mechanism 2, the driving mechanism 2 comprises a flange end surface and a driving rod 21 which are connected with driving equipment, the driving rod 21 moves in a guiding way by the driving rod mounting hole 121, the other side of the mounting seat 1 is provided with a die mounting part 13, the die mounting part 13 is of a side open structure, one side of the die holder 4 is provided with a flanging guide part 42 which is positioned in the mounting seat 1 and is connected with a guide structure arranged on the mounting seat 1 so as to guide the linear motion of the die holder 4, the other side of the die holder 4 is provided with a die punch mounting part 41 which is positioned outside the die mounting seat 1 and is provided with a mounting step surface for mounting the die insert 3, the lower end surface of the die punch mounting part 41 is provided with a driven part which is positioned right below the mounting step surface, thus shearing force can be avoided in the die holder 4, the driving mechanism 2 and the driven part are symmetrically positioned at two sides of the central axis of the transmission roller 5 and are respectively connected with two sides of the transmission roller 5, the connection can be pin shaft connection or slide pin connection, the utility model preferably adopts slide block sliding connection, and is shown with reference to figures 1-3 again, under the vertical downward movement drive of the driving mechanism 2, the driving roller 5 rotates in the supporting chute, the other side of the driving roller 5 rotates upward to drive the driven piece to move and transfer to the die holder 4, under the guiding effect of the guiding structure, upward movement occurs relative to the driving mechanism 2, the upward turning mechanism adopts a rotating shaft type lever structure without pin shaft connection, and is matched with the supporting chute to realize lever type transmission on two sides.

As a further technical solution of the driving mechanism 2 and the driven member, the above sliding connection mode of the sliding blocks is preferred in this embodiment, the specific structure of the sliding connection mode can refer to fig. 2 again, the driving mechanism 2 further includes a driving guide block 22 located at the lower end portion of the driving rod 21 and a driving sliding block 23 in linear sliding fit with the driving guide block 22, similarly, the driven member adopts an edge sliding block, the lower end face of the die holder 4 is provided with a transmission sliding groove 411 located right above the flanging sliding block 43, the flanging sliding block 43 is slidably arranged in the transmission sliding groove 411, the driving sliding block 23 and the flanging sliding block 43 are respectively rotatably connected with the transmission rolling shaft 5, that is, can be connected by adopting a pin, in this embodiment, a sliding surface is selected for contact connection, specifically, the lower end faces of the driving sliding block 23 and the flanging sliding block 43 are both raised to form a convex round surface, the upper end surfaces of two sides of the transmission roller 5 are milled by corners to form two symmetrical slide block grooves 51, the inner groove surfaces of the slide block grooves 51 are arc surfaces, the driving slide block 23 and the flanging slide block 43 are respectively connected with the slide block grooves 51 in a sliding fit manner and are positioned on the same sliding line, under the transmission of the rotation motion of the transmission roller 5, the driving slide block 23 and the flanging slide block 43 respectively slide relatively in the slide block grooves 51, and meanwhile, the driving slide block and the flanging slide block 43 are linearly smooth so as to adapt to the deflection angle of the transmission roller 5 and keep a contact transmission state.

In the actual turning process, since the driving sliding block 23 can linearly slide and the transmission sliding groove 411 is not provided with end surface limit, once the driving sliding block 23 is separated from the sliding block groove 51, the driving sliding block 23 is slightly shifted, under the extrusion of the driving rod 21, the driving sliding block 23 and the transmission rolling shaft 5 are in point-to-point contact, so that the driving sliding block 23 is damaged by force, even the driving rod 21 is deformed and bent, and the same problem exists in the returning process, therefore, in order to solve the problem that the driving sliding block 23 and the flanging sliding block 43 are separated from the sliding block groove 51 respectively, the driving sliding block 23 and the flanging sliding block 43 always maintain an ideal transmission state in close sliding fit in the whole turning process, in the embodiment, as shown in fig. 2-3, the driving spring 7 is arranged on the driving mechanism 2 and clamped between the lower end of the driving rod mounting hole 121 and the upper end surface of the driving guide block 22, and the driving sliding block 23 always maintains an ideal sliding fit state with the sliding block groove 51 in the turning-up and returning process under the force of the driving spring 7.

In this embodiment, as shown in fig. 4, the guiding structure on the mounting base 1 specifically includes two guiding grooves 132 and guiding columns 131, the two guiding grooves 132 are disposed on two side walls of the mounting base 1 and symmetrically located on two sides of the guiding columns 131, the guiding columns 131 are formed by extending downward from the top of the mounting base 1, correspondingly, two guiding protrusions 421 slidably matched with the guiding grooves 132 and guiding holes 422 for inserting the guiding columns 131 are disposed on the flanging guiding portion 42 of the female die base 4, in order to drive the driving roller 5 to rotate in a retracting manner, a retracting spring 6 is sleeved on the guiding columns 131, the retracting spring 6 is pressed between the top of the mounting base 1 and the bottom of the guiding holes 422, in addition, it is very important that the driving roller 5 is retracted correctly, which affects the accuracy of flanging driving and may generate a jump-off problem in the retracting process, therefore, in the design, the stiffness coefficient of the retracting spring 6 is required to be larger than that of the driving spring 7, so that the retracting of the upturning mechanism has enough return force, and the retracting spring 6 and the driving spring 7 should be designed correspondingly, when the driving roller 5 reaches the position of the whole rolling mechanism, the two are in a stable state.

References herein to "upper", "lower", "inner", "end", "side", "vertical", etc., are in terms of coordinates or orientation as shown in fig. 1-4. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the apparatus, elements or components indicated to the particular orientation or to be constructed and operated in a particular orientation;

also, some of the above terms may be used to indicate other meanings besides azimuth or positional relationships, for example, the terms "upper", "inner", etc. may also be used to indicate some kind of dependency or connection relationship in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high strength upturning mechanism comprising: the device comprises a mounting seat, a driving mechanism, a driving roller, a die insert and a die seat, wherein the driving roller is positioned at the bottom of the mounting seat and is in sliding fit with a supporting rolling groove arranged at the bottom of the mounting seat, the driving mechanism is mounted on one side of the mounting seat and moves in a guiding manner through a driving rod mounting hole arranged on the mounting seat, the driving mechanism is positioned above one side of a central axis of the driving roller, the tail end of the driving mechanism is connected with one side of the driving roller to transmit driving force, the die seat is mounted on the other side of the mounting seat and moves in a guiding manner through a guiding structure arranged on the mounting seat, the die insert is fixedly mounted on the die seat, a driven piece positioned under the die seat is positioned above the other side of the central axis of the driving roller and is connected with the other side of the driving roller to rotate along with the driving roller so as to move opposite to the driving mechanism.

2. The high strength upturning mechanism of claim 1, further comprising: the transmission roller is in a crescent shape with a symmetrical structure, and the longitudinal section area of the transmission roller is gradually reduced from the middle part to the two ends.

3. The high strength upturning mechanism of claim 2, further comprising: the driving mechanism comprises a driving rod, a driving guide block and a driving sliding block in linear sliding fit with the driving guide block, and the driving sliding block is rotatably connected with the transmission roller.

4. A high strength upturning mechanism as claimed in claim 3, wherein: the driven piece is a flanging slide block, a transmission chute positioned right above the flanging slide block is arranged on the lower end face of the female die seat, the flanging slide block is slidably arranged in the transmission chute, and the flanging slide block is rotatably connected with the transmission roller.

5. The high strength upturning mechanism of claim 4, and further comprising: the driving slide block and the flanging slide block are both protruded to form a convex surface, two symmetrical slide block grooves are formed in the upper end surfaces of two sides of the driving roller through corner milling, the inner groove surfaces of the slide block grooves are arc surfaces, and the driving slide block and the flanging slide block are respectively connected with the slide block grooves in a sliding fit manner.

6. The high strength upturning mechanism of claim 5, and further comprising: the driving mechanism is provided with a driving spring which is clamped between the lower end of the driving rod mounting hole and the upper end face of the driving guide block.

7. The high strength upturning mechanism of claim 6, and further comprising: the guide structure comprises two guide grooves and guide columns, wherein the two guide grooves are formed in the two side walls of the mounting seat and symmetrically located on the two sides of the guide columns, the guide columns are formed by downwards extending the top of the mounting seat, correspondingly, guide protrusions matched with the guide grooves in a sliding mode and guide holes used for being inserted into the guide columns are arranged on the die holder, a rollback spring is sleeved on the guide columns, and the rollback spring is pressed between the top of the mounting seat and the bottom surface of the guide holes.

8. The high strength upturning mechanism of claim 7, and further comprising: the backing spring has a stiffness coefficient greater than the stiffness coefficient of the drive spring.