CN218855275U

CN218855275U - Bending machine lower die capable of automatically detecting bending angle and free of pull mark

Info

Publication number: CN218855275U
Application number: CN202222888344.3U
Authority: CN
Inventors: 潘国清; 孙劲文; 钱进
Original assignee: Suzhou Qingke Electrical Co ltd
Current assignee: Suzhou Qingke Electrical Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-14
Anticipated expiration: 2032-10-31

Abstract

The application relates to an automated inspection rolls over angle and does not have bender lower mould of drawing trace, include: the lower die base is provided with a bending groove; the fixing plate is arranged at one end of the lower die holder; the two overturning parts are parallel and symmetrically arranged in the bending groove along the axis of the bending groove, and one end of each overturning part is rotatably connected to the fixed plate so that the overturning part can rotate around the axis of the overturning part; the reset assembly is arranged between the fixed plate and the turnover piece and used for resetting the rotated turnover piece to an initial position; the angle detection mechanism is arranged on the fixed plate and used for detecting the rotation angle of the turnover piece; and the positioning piece is arranged on the fixing plate and used for positioning the initial position of the turnover piece. When bending, the turnover part is bent and rotated along with the workpiece, and the angle detection mechanism detects the rotation angle of the turnover part in real time so as to obtain the bending angle of the workpiece, so that an operator can find problems and adjust the rotation angle correspondingly, and the efficiency is improved. The initial position of the positioning piece positioning turnover piece is unchanged, and the detection precision and the bending precision are improved.

Description

Bending machine lower die capable of automatically detecting bending angle and free of pull mark

Technical Field

The utility model relates to an automated inspection rolls over angle and does not have bender lower mould of drawing a trace belongs to the mould technical field of bending.

Background

The lower die of the bending machine is an important component of the bending machine and is used for supporting a workpiece when the workpiece is bent, and the bending groove on the lower die is used for being matched with the upper die and used for bending the workpiece. When a workpiece is bent, the workpiece is bent under the pressure of the upper die and slides into the bending groove, and sliding friction is generated between the surface of the workpiece and the groove wall of the bending groove, so that pull marks are generated on the surface of the workpiece, and subsequent use is influenced.

Chinese application CN216780031U discloses a lower mould of bending for bender, through set up two on the lower mould main part and turn over the board and be used for restoring to the throne the gyration elastic component that turns over the board, replace traditional bending groove, when the work piece bends downwards, turn over the board and laminate in the work piece all the time along with work piece synchronous rotation to avoid the work piece outward appearance to leave the vestige with the mould scraping at the in-process of bending.

In this patent, the rotation angle and the reset position of turning over the board can influence the angle of bending of work piece, in order to guarantee that work piece bending angle meets the requirements, operating personnel need after the work piece is bent, measure the angle of bending of work piece with the angle gauge, if there is angular deviation in the angle of bending, then carry out subsequent work of bending again after adjusting the reset position or the rotation angle of turning over the board, lead to machining efficiency low, when the work piece quantity that needs to bend is more, operating personnel can't carry out the angle measurement to the work piece after every bending, lead to the work piece after bending to be not conform to the quality control standard easily, influence follow-up use. In addition, due to the use wear, aging and the like of the rotary elastic part, the return effect of the rotary elastic part on the turning plate at different stages is different, so that the deviation exists in the return position of the turning plate after turning every time, and the bending precision of a workpiece is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can be at the in-process real-time detection work piece bending angle of processing work piece, can fix a position the initial position of upset piece and can avoid the work piece to produce the bender lower mould that the surface was strained when bending.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an automated inspection bending angle and do not have bender lower mould of drawing trace, includes:

the lower die base is provided with a bending groove;

the fixing plate is arranged at one end of the lower die base;

the two overturning pieces are parallel and symmetrically arranged in the bending groove along the axis of the bending groove, and one end of each overturning piece is rotatably connected to the fixed plate so that the overturning piece can rotate around the axis of the overturning piece;

the reset assembly is arranged between the fixed plate and the turnover piece and used for enabling the turnover piece after rotation to reset to an initial position;

the angle detection mechanism is arranged on the fixing plate and used for detecting the rotation angle of the turnover piece; and

and the positioning piece is arranged on the fixing plate and used for positioning the initial position of the turnover piece.

Further, the reset assembly includes and two sets of reset unit that upset piece is a one-to-one setting, reset unit is including the board that resets and the elastic component that resets, the board that resets is fixed to be corresponded on the upset piece, the elastic component that resets connect reset the board with the fixed plate.

The reset elastic piece is provided with a stretching state and a resetting state, the turnover piece rotates to drive the reset plate to rotate, the reset elastic piece is in the stretching state, the turnover piece is located at an initial position, and the reset elastic piece is in the resetting state.

Furthermore, the positioning part is arranged between the two reset plates, the positioning part is provided with a reset surface matched with the reset plates, the reset elastic part is in a reset state, and the reset plates are abutted against the reset surface.

Further, the elastic restoring piece is a spring, and the spring is connected with the fixing plate and the restoring plate through bolts.

Furthermore, a holding groove is formed in one end face of the fixing plate, which is opposite to the lower die holder, at least part of the reset plate is accommodated in the holding groove, and openings for rotating the reset plate are formed in two sides of the holding groove.

Furthermore, the turnover part comprises a rotating shaft and a turnover plate sleeved on the rotating shaft, and a shaft hole for the rotating shaft to pass through is formed in the fixing plate.

Furthermore, the bending groove is of a V-shaped structure, and arc-shaped rotating grooves used for containing the turnover plate are formed in the groove walls on the two sides of the bending groove.

Furthermore, the turnover plate comprises a supporting portion and a rotating portion, the rotating portion is formed by protruding and far away from the supporting portion through one end face of the supporting portion, the rotating portion is sleeved on the rotating shaft and contained in the arc-shaped rotating groove, and the shape of the rotating portion is matched with that of the arc-shaped rotating groove.

Further, angle detection mechanism includes two angle encoders and is used for fixing two angle encoders are in mounting panel on the fixed plate, two angle encoders and two upset piece is a one-to-one setting, be provided with two pilot holes on the mounting panel, angle encoders wear to locate the pilot hole with correspond upset piece butt joint.

Further, a mounting groove is formed in the lower die holder and used for fixing the lower die holder on the numerical control copper bar machine.

The beneficial effects of the utility model reside in that: this application is equipped with angle detection mechanism and setting element, and when the work piece of bending, the upset piece is rotatory along with bending of work piece, and angle detection mechanism real-time detection upset piece's rotation angle to can obtain the angle of bending of work piece in real time, the operating personnel of being convenient for in time adjusts the position of upset piece, and simultaneously, the setting element can fix a position the initial position of upset piece, and the initial position that resets at every turn with the assurance upset piece remains unchanged, with the precision of bending that improves the work piece. In addition, during bending, the turnover piece is always attached to the workpiece along with the rotation of the turnover piece, so that the phenomenon that the workpiece slides into the bending groove during bending to cause pull marks on the surface of the workpiece can be avoided.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a lower die of a bending machine according to an embodiment of the present invention;

fig. 2 is an exploded view of a lower die of the bending machine shown in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 and 2, an embodiment of the present application provides a lower bending machine die capable of automatically detecting a bending angle and having no pull mark, the lower bending machine die is matched with a general V-shaped upper die (not shown) to bend a workpiece, and the lower bending machine die can be fixed on a numerical control copper bar machine (not shown). It should be noted that, the numerical control copper bar machine and the general V-shaped upper die are both in the prior art, and are not described herein again.

The lower die of the bending machine is provided with a mounting groove, and the lower die of the bending machine is matched and mounted with the numerical control copper bar machine through the mounting groove. Specifically, the mounting groove is formed by enclosing two oppositely arranged hooks 1, each of the two hooks 1 comprises an oppositely arranged arm 11 and a bending part 12 which is formed by bending and extending the arm towards the other hook 1, and an opening 13 is formed between the two bending parts 12.

In this embodiment, the lower die of the bending machine includes a lower die base 10 provided with a bending groove 2, a fixing plate 3 arranged at one end of the lower die base, and two turning pieces 4 arranged in the bending groove 2. The two turnover pieces 4 are parallel and symmetrically arranged in the bending groove 2 along the axis of the bending groove 2, and one end of each turnover piece 4 is rotatably connected to the fixing plate 3, so that the turnover pieces 4 can rotate around the axis of the turnover pieces. The turning member 4 includes a rotating shaft 41 and a turning plate 42 sleeved on the rotating shaft 41, and the fixing plate 3 is provided with a shaft hole 31 for the rotating shaft 41 to pass through. The bending groove 2 is of a V-shaped structure and is suitable for a universal V-shaped upper die. The mounting groove is provided on the lower die holder 10 and is located on an end surface of the lower die holder opposite to the bending groove 2. In this embodiment, the fixing plate 3 is fixed on the lower die holder by bolts.

In order to ensure that the bending angle and the bending shape of the workpiece meet the standard, the influence of the shape of the turnover part 4 on the bending of the workpiece is eliminated. In this embodiment, arc-shaped rotating grooves 5 for accommodating the turnover part 4 are formed on the groove walls of the two sides of the bending groove 2.

Specifically, the turning plate 42 includes a supporting portion 421 and a rotating portion 422 protruding from an end surface of the supporting portion 421 to be away from the supporting portion 421, and the rotating portion 422 is sleeved on the rotating shaft 41 and is received in the circular arc-shaped rotating groove 5. In order to improve the stability of the lower die of the bending machine during working, the shape of the rotating part 422 is matched with that of the circular arc-shaped rotating groove 5. That is, the rotating portion 422 is a semi-cylindrical structure, so that the turnover plate 42 can be prevented from swinging in the circular arc-shaped rotating groove 5 under the pressure of the universal V-shaped upper die when the workpiece is bent, thereby affecting the bending precision of the workpiece, and the upper surface of the supporting portion 421 contacting the workpiece is a horizontal surface, so that the supporting portion 421 can be attached to the surface of the workpiece.

When the workpiece is bent, the workpiece is placed on the two turnover plates 42, the surface of the workpiece is attached to the upper surface of the supporting portion 421 of the turnover plate 42, the to-be-bent part of the workpiece is aligned with the bending groove 2, the two turnover plates 42 are respectively positioned on two sides of the to-be-bent part of the workpiece, the workpiece is bent towards the bending groove 2 under the pressure of the universal V-shaped upper die, the two turnover plates 42 synchronously rotate towards the other turnover part 4 along with the bending of the workpiece, so that the turnover plates 42 are always attached to the surface of the workpiece until the lower surface of the supporting portion 421 is completely attached to the groove wall of the bending groove 2, the surface of the workpiece and the groove wall of the bending groove 2 are prevented from being mutually rubbed to cause scratches to be generated on the surface of the workpiece, and the overall attractiveness of the bent workpiece is improved.

In order to realize that the turnover part 4 can reset to the initial position after rotating every time so as to perform the next round of bending operation, the lower die of the bending machine is further provided with a reset assembly, and the reset assembly is arranged between the fixing plate 3 and the turnover part 4.

Specifically, the reset assembly comprises two sets of reset units 6 which are arranged in a one-to-one manner with the two turnover pieces 4, each reset unit 6 comprises a reset plate 61 and a reset elastic piece 62, the reset plates 61 are fixed on the corresponding turnover pieces 4, and the reset elastic pieces 62 are connected with the reset plates 61 and the fixing plates 3. Reset elastic component 62 has tensile state and reset state, and upset 4 rotates and drives reset plate 61 and rotate, and the elastic component 62 that resets is in tensile state, and upset 4 is located initial position, and the elastic component 62 that resets is in reset state.

In this embodiment, the reset plate 61 is provided with a through hole 611 for the flip element 4 to pass through, so as to fix the reset plate 61 on the flip element 4, the shape of the through hole 611 is matched with the shape of the flip plate 42, so that after the supporting portion 421 and the rotating portion 422 of the flip plate 42 are inserted into the through hole 611, the portion of the supporting portion 421 protruding out of the rotating portion 422 can drive the reset plate 61 to rotate together.

In a conventional manner, after the elastic member 62 is used for a long time, the elastic restoring force of the elastic member 62 is weakened, so that the restoring effect is affected, and the elastic member 62 is caused to restore to the original position due to the weakening of the elastic restoring force of the elastic member 62, so that the surface of the turnover member 4 and the surface of the workpiece cannot be always attached to each other, the surface of the workpiece is pulled, and the bending precision of the workpiece is affected.

In order to avoid the reduction of the elastic effect of the reset elastic piece 62 after long-time use and the failure of resetting the turnover piece 4 to the initial position, the lower die of the bending machine is further provided with a positioning piece 7 for positioning the initial position of the turnover piece 4.

Specifically, the positioning element 7 is fixed on the fixing plate 3, the positioning element 7 is disposed between the two reset plates 61, the positioning element 7 is provided with a reset surface 721 matched with the reset plates 61, the reset elastic element 62 is in a reset state, and the reset plates 61 abut against the reset surface 721. That is, when the flip-flop 4 is at the initial position, the reset plate 61 and the reset surface 721 are always kept in a state of being attached and abutted against each other under the action of the reset elastic member 62, so that the flip-flop 4 can be kept at the initial position before and after being rotated.

In this embodiment, the elastic return member 62 is a spring, and the spring 62 connects the fixing plate 3 and the return plate 61 through a bolt. Specifically, a first fixing bolt 81 is disposed on an end surface of the fixing plate 3 away from the lower die holder 10, second fixing bolts 82 are disposed on the two reset plates 61, and two ends of the spring 62 are connected to the first fixing bolt 81 and the second fixing bolt 82 respectively.

As described above, in order to reduce the overall size of the lower die of the bending machine, the fixing plate 3 is provided with the accommodating groove 32 on an end surface of the lower die holder 10, at least a part of the reset plate 61 is accommodated in the accommodating groove 32, and openings (not numbered) for rotating the reset plate 61 are provided on two sides of the accommodating groove 32. It should be noted that the reset plate 61 is disposed between the fixed plate 3 and the lower die holder 10, as can be seen from the foregoing, the positioning plate is also disposed between the fixed plate 3 and the lower die holder 10 and located between the two reset plates 61, and the rotating shaft 41 of the turnover part 4 passes through the through hole 611 on the reset plate 61 and the shaft hole 31 on the fixed plate 3, so that the turnover part 4 can drive the reset plate 61 to rotate and connect to the fixed plate 3.

In this embodiment, the positioning member 7 includes a matching portion 72 and a fixing rod 71 formed by protruding from the top end of the matching portion 72, the top end of the fixing rod 71 is provided with a threaded portion (not shown) and a nut 711 matching with the threaded portion, and the top wall of the fixing plate 3 is provided with a threaded hole 33 matching with the threaded portion to fix the positioning member 7 in the receiving groove 32.

The engaging portion 72 is a trapezoidal structure, the engaging surface 721 of the engaging portion is an inclined surface with the reset plate 61, the two reset plates 61 are substantially Z-shaped, and the second fixing bolt 82 is disposed on the upper edges of the two reset plates 61 and away from the other reset plate 61. A through hole 611 through which the turnover member 4 passes is provided on the lower edge of the reset plate 61. The first fixing bolt 81 is arranged at the middle position of the upper edge of the fixing plate 3, so that the stretching and resetting effects of the two springs 62 are the same, and the two turnover pieces 4 are symmetrically arranged correspondingly, so that the pressure of the workpiece on the two turnover pieces 4 is the same as the tension of the springs 62 on the workpiece, and the bending precision of the workpiece is improved.

When bending, the workpiece is bent into the bending groove 2 under the pressure of the universal V-shaped upper die, the two turnover plates 42 rotate towards the other turnover part 4 along with the bending of the workpiece, the two reset plates 61 are driven to rotate, the upper edges of the two reset plates 61 move towards the direction away from the other reset plate 61 simultaneously, so that the spring 62 is stretched, when the bending is finished, the workpiece is taken out, and the spring 62 drives the two reset plates 61 to rotate towards the directions close to each other to abut against the matching part 72 under the elastic recovery effect, so as to drive the turnover part 4 to reset to the initial position, and the workpiece bending operation is finished at one time.

In order to detect the bending angle of the workpiece in real time and improve the working efficiency, an angle detection mechanism 9 for detecting the rotation angle of the turnover part 4 is further arranged on the lower die of the bending machine. The angle detection mechanism 9 is provided on the fixed plate 3. It should be noted that the bending angle of the workpiece is related to the rotation angles of the two flip members 4, and thus the bending angle of the workpiece can be obtained by detecting the rotation angles of the flip members 4.

Specifically, angle detection mechanism 9 includes two angle encoder 91 and is used for fixing two angle encoder 91 the mounting panel 92 on fixed plate 3, and two angle encoder 91 are a one-to-one setting with two upset pieces 4, are provided with two pilot holes 921 on the mounting panel 92, and angle encoder 91 wears to locate pilot hole 921 in order to dock with corresponding upset piece 4. As can be seen from the above, the rotating shaft 41 of the flipper 4 sequentially passes through the reset plate 61 and the fixed plate 3 to be abutted with the corresponding angle encoder 91. In this embodiment, the mounting plate 92 is fixed to the fixing plate 3 by bolts.

It should be noted that the angle encoder 91 may be connected to an external control device (not shown), which may be a controller of a computer, a mobile phone or a numerical control copper bar machine, so as to store, calculate, monitor and display the data of the rotation angle of the turnover part 4 detected by the angle encoder 91, thereby implementing automatic measurement of the bending angle of the workpiece. The angle encoder is a conventional one, and the structure, operation principle and connection method thereof are well known to those skilled in the art, and are not described herein.

It is to be understood that the above-described embodiments are only a few, but not all, of the embodiments described herein. Based on the embodiments in the present application, those skilled in the art may make other changes or modifications without creative efforts, and all should fall within the protection scope of the present application.

Claims

1. The utility model provides an automated inspection angle of turning over and do not have bender lower mould of drawing trace which characterized in that includes:

the lower die base is provided with a bending groove;

the fixing plate is arranged at one end of the lower die base;

2. The bending machine lower die capable of automatically detecting bending angles and having no pull marks as claimed in claim 1, wherein the reset assembly comprises two sets of reset units which are arranged in a one-to-one manner with two overturning pieces, each reset unit comprises a reset plate and a reset elastic piece, the reset plates are fixed on the corresponding overturning pieces, and the reset elastic pieces are connected with the reset plates and the fixing plates;

3. The bending machine lower die capable of automatically detecting bending angles and having no pull mark as claimed in claim 2, wherein the positioning element is disposed between two reset plates, the positioning element is provided with a reset surface matched with the reset plates, the reset elastic element is in a reset state, and the reset plates abut against the reset surfaces.

4. The lower die of a bending machine capable of automatically detecting a bending angle without a pull mark as claimed in claim 3, wherein said return elastic member is a spring, and said spring connects said fixing plate and said return plate by a bolt.

5. The bending machine lower die capable of automatically detecting the bending angle and having no pull mark as claimed in claim 3, wherein an end surface of the fixing plate opposite to the lower die base is provided with a receiving groove, at least a part of the reset plate is received in the receiving groove, and two sides of the receiving groove are provided with openings for the reset plate to rotate.

6. The bending machine lower die capable of automatically detecting the bending angle and having no pull mark as claimed in claim 1, wherein the turning piece comprises a rotating shaft and a turning plate sleeved on the rotating shaft, and the fixing plate is provided with a shaft hole for the rotating shaft to pass through.

7. The lower die of bending machine for automatically detecting bending angle without pull mark as claimed in claim 6, wherein said bending slot is of V-shaped structure, and arc-shaped rotating slots for accommodating said turnover plate are provided on both side slot walls of said bending slot.

8. The bending machine lower die capable of automatically detecting the bending angle and having no pull mark as claimed in claim 7, wherein the turning plate comprises a supporting portion and a rotating portion protruding from an end surface of the supporting portion to a position away from the supporting portion, the rotating portion is sleeved on the rotating shaft and received in the circular arc-shaped rotating groove, and the shape of the rotating portion is matched with the shape of the circular arc-shaped rotating groove.

9. The lower die of the bending machine capable of automatically detecting the bending angle and having no pull mark as claimed in claim 6, wherein said angle detection mechanism comprises two angle encoders and a mounting plate for fixing the two angle encoders on the fixing plate, the two angle encoders and the two turning pieces are arranged in a one-to-one manner, the mounting plate is provided with two assembling holes, and the angle encoders are inserted into the assembling holes to be in butt joint with the corresponding turning pieces.

10. The bending machine lower die capable of automatically detecting the bending angle and having no drawing mark as claimed in claim 1, wherein an installation groove is formed in the lower die holder, and the installation groove is used for fixing the lower die holder on a numerical control copper bar machine.