CN210253875U

CN210253875U - Bending die

Info

Publication number: CN210253875U
Application number: CN201920567679.0U
Authority: CN
Inventors: 金胜利
Original assignee: Shanghai Cloud Blade Manufacturing Co ltd
Current assignee: Shanghai Cloud Blade Manufacturing Co ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-04-07
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a mould of bending, including the upper die base, the die holder, go up the mould, lower mould and positioner, the upper portion of die holder is arranged in to the upper die base suspension, the bottom of upper die base is fixed with the mould, the top of die holder is fixed with and goes up mould matched with lower mould, be provided with on the die holder of lower mould both sides and be used for treating the machined part and press from both sides the positioner who tightly fixes a position, this technical scheme is through being provided with material returned device like this, when carrying out the material returned process after the round steel is buckled, because the bottom of bracing piece is direct to link to each other with the backup pad, be provided with elastic energy storage device between backup pad and the bottom plate simultaneously, whole comparatively balanced, and can upwards rise under the effect of the second reset spring elasticity in the elastic energy.

Description

Bending die

Technical Field

The utility model relates to a mould specifically is a mould of bending.

Background

Among the prior art, when adopting the manual bending of bending die, there is the unstable condition of material returned piece resilience during the material returned, and can't set up the suitable resilience distance that returns the material piece according to the kind and the size of waiting to process round steel, there is the condition that material returned piece damages the round steel after processing, influence the quality of round steel after processing, and be not convenient for to the round steel of waiting to process of different specification models, carry out the tight location of quick clamp, and the stability of pressing from both sides tight location is lower, it needs the staff to take up the upper die base is whole just can accomplish the compound die process in addition to be exactly the compound die, not only waste time and energy, simultaneously work efficiency has still been reduced, therefore we make the improvement to this, a mould of bending is proposed.

SUMMERY OF THE UTILITY MODEL

For solving the defect that prior art exists, the utility model provides a mould of bending.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a bending die, including upper die base, die holder, last mould, lower mould and positioner, the upper portion of die holder is arranged in the suspension of upper die base, the bottom of upper die base is fixed with the mould, the top of die holder is fixed with and goes up mould matched with lower mould, be provided with on the die holder of lower mould both sides and be used for treating the positioner that the machined part pressed from both sides tight location.

Preferably, a pressing support mechanism is arranged on the top of the upper die base and comprises an L-shaped support, the bottom end of the L-shaped support is fixed on the lower die base, a fixing rod is inserted into a horizontal section of the L-shaped support in a sliding manner along the vertical direction of the horizontal section, the bottom end of the fixing rod is fixed on the upper die base, and a die handle is arranged at the top end of the fixing rod.

Preferably, a first return spring is sleeved on an outer ring of the fixing rod between the L-shaped bracket and the die handle, and two ends of the first return spring are respectively abutted to the surfaces of the L-shaped bracket and the die handle.

Preferably, the mold core of the upper mold is arranged opposite to the cavity of the lower mold, and a material returning device for rapidly ejecting the processed material is arranged in the cavity of the lower mold.

Preferably, material returned device is including returning the material piece, it sets up in the die cavity of lower mould to return the material piece activity, and the bottom of lower mould intracavity wall has seted up a pole hole, and slides in the pole hole and insert and be equipped with a bracing piece, the top of bracing piece links with the bottom stationary phase that returns the material piece, and the bottom of bracing piece is connected with horizontal backup pad, the bottom parallel arrangement of backup pad has the bottom plate, and is connected through elastic energy storage device between backup pad and the bottom plate.

Preferably, the elastic energy storage device comprises a sleeve fixed at the bottom end of the supporting plate, a chute with a downward notch is formed in the sleeve, a sliding block is arranged in the chute in a sliding mode, the top end of the sliding block is elastically connected with the top end of the chute wall through a second return spring, and the bottom end of the sliding block is connected with the bottom plate through a connecting rod.

Preferably, a stroke adjusting screw is arranged on the supporting plate, the head of the stroke adjusting screw is arranged at the top of the supporting plate, the rod part of the stroke adjusting screw penetrates through the whole supporting plate, and the length of the rod part of the stroke adjusting screw penetrating out of the supporting plate is smaller than the distance between the supporting plate and the bottom plate.

Preferably, the positioning device comprises two support frames fixed on the lower die holder, the two support frames are symmetrically arranged relative to the lower die, one support frame far away from one side of the L-shaped support frame is transversely provided with a thread groove, a thread rotating shaft is inserted in the thread groove, one end, far away from the other support frame, of the thread rotating shaft is fixedly provided with a rocking handle, the other end of the thread rotating shaft is movably connected with an adjusting plate, one side, far away from the thread rotating shaft, of the adjusting plate is provided with a first clamp, and the other top, close to one side of the adjusting plate, of the support frame is fixedly provided with a second clamp matched with the first.

Preferably, the swing joint department of screw thread pivot and regulating plate is provided with the bearing frame, install the bearing in the bearing frame, and the inner circle of bearing is connected with the tip block of screw thread pivot, the one side that the screw thread pivot was kept away from to the bearing frame is fixed on the regulating plate.

Preferably, a limiting telescopic rod is further arranged between the supporting frame and the adjusting plate and used for ensuring that the adjusting plate moves along the horizontal direction all the time.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. this kind of mould of bending through being provided with material returned device, when the round steel carries out the material returned process after buckling, because the bottom of bracing piece is direct to link to each other with the backup pad, is provided with elastic energy storage device between backup pad and the bottom plate simultaneously, whole comparatively balanced to can upwards rise under the effect of the second reset spring elasticity in elastic energy storage device, accomplish the material returned process.

2. Through the stroke adjusting screw between backup pad and the bottom plate, can be according to the difference of the round steel kind of buckling and specification, effectively adjust the backup pad for the height that the bottom plate descends, and then the material returned piece resilience height when adjusting the material returned, the practicality is strong.

3. Through pressing down supporting mechanism, when needs carry out the compound die operation, the staff only need press down the die shank with the hand, and the die shank drives dead lever and die holder downstream to be close the mould gradually, until accomplishing the compound die operation, when pressing, the elastic potential energy is converted with gravitational potential energy to first reset spring compression, so that the initial position can be got back to automatically to the die holder when the die sinking, has not only reduced staff's intensity of labour, has practiced thrift the time simultaneously, has improved production efficiency.

4. Through being provided with positioner, be convenient for press from both sides tight location with the treating round steel of different specification models fast, and press from both sides the stability of tight location higher.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the material returning device of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of the elastic energy storage device of the present invention;

fig. 4 is a schematic structural diagram of the positioning device of the present invention.

In the figure: 1. an upper die holder; 2. a lower die holder; 3. an upper die; 4. a lower die; 5. a positioning device; 6. a support frame; 7. a threaded shaft; 8. a rocking handle; 9. an adjusting plate; 10. a first clamp; 11. limiting the telescopic rod; 12. a bearing seat; 13. a second clamp; 14. an L-shaped bracket; 15. fixing the rod; 16. a die shank; 17. a first return spring; 18. a material returning device; 19. a material returning block; 20. a support bar; 21. a support plate; 22. an elastic energy storage device; 23. a base plate; 24. a stroke adjusting screw; 25. a sleeve; 26. a slider; 27. a second return spring; 28. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1:

referring to fig. 1, the device comprises an upper die holder 1, a lower die holder 2, an upper die 3, a lower die 4 and a positioning device 5, wherein the upper die holder 1 is suspended at the upper part of the lower die holder 2, the upper die 3 is fixed at the bottom of the upper die holder 1, the lower die 4 matched with the upper die 3 is fixed at the top of the lower die holder 2, and the lower die holders 2 at the two sides of the lower die 4 are provided with the positioning device 5 for clamping and positioning the workpiece to be machined.

The working process is as follows: when the process of buckling is carried out to the round steel of treating processing when needs, the round steel of treating processing is fixed in the 4 die cavities of lower mould of die holder 2, it is fixed to utilize positioner 5 to treat the round steel of processing, simultaneously press close to lower mould 4 with last mould 3 on the upper die base 1 gradually, make the core of last mould 3 and the 4 die cavities of lower mould overlap and accomplish the compound die, accomplished the process of buckling of treating the round steel once simultaneously, will go up mould 3 and the 4 separation of lower mould and accomplish the die sinking afterwards, the round steel after will buckling takes out and can carry out the process of treating the round steel next.

Example 2:

the embodiment is a preferred technical scheme of embodiment 1, please refer to fig. 1, a pressing support mechanism is arranged on the top of the upper die holder 1, the pressing support mechanism includes an L-shaped support 14, the bottom end of the L-shaped support 14 is fixed on the lower die holder 2, a fixing rod 15 is inserted on the horizontal section of the L-shaped support 14 along the vertical direction of the horizontal section in a sliding manner, the bottom end of the fixing rod 15 is fixed on the upper die holder 1, a die handle 16 is arranged at the top end of the fixing rod 15, and a buffer sponge layer or an anti-slip fabric can be wrapped on the surface of the die handle 16.

Further, a first return spring 17 is sleeved on an outer ring of the fixing rod 15 between the L-shaped support 14 and the die shank 16, two ends of the first return spring 17 are respectively abutted against the surfaces of the L-shaped support 14 and the die shank 16, and a spring washer is installed at the abutting joint of the first return spring 17 and the L-shaped support 14 and the die shank 16 to prevent the end of the spring from damaging the contact surface of the L-shaped support 14 and the die shank 16.

The working process is as follows: when needs carry out the compound die operation, the staff only need press die shank 16 with the hand, make die shank 16 drive dead lever 15 and die holder 2 downstream, and be close to mould 3 gradually, until accomplishing the compound die operation, when pressing, the elastic potential energy is converted with gravitational potential energy to first reset spring 17 compression, after the round steel is buckled, the staff only need loosen die shank 16, make mould 3 under the effect of first reset spring 17 elastic force, upper die holder 1 makes progress the lifting and gets back to the initial position with automatic, accomplish the die sinking fast, staff's intensity of labour has not only been reduced, and the time is saved simultaneously, and the production efficiency is improved.

Example 3: this embodiment is an improvement of embodiment 2, a buffer spring is sleeved on the fixing rod 15 between the upper die holder 1 and the L-shaped bracket 14, a top end of the buffer spring is fixedly connected with a contact surface of the upper die holder 1, a bottom end of the buffer spring is not connected with a top end of the upper die holder 1, and a length of the buffer spring in an initial state is less than or equal to a length of the fixing rod 15 between the upper die holder 1 and the L-shaped bracket in a static state.

Through buffer spring, when carrying out the die sinking operation, when the top motion of upper die base 1 to with buffer spring bottom contact, first reset spring 17's elastic potential energy part is turned into buffer spring's elastic potential energy, effectively slow down upper die base 1, dead lever 15 and the speed that the die shank 16 rises, not only can prevent that L type support 14 from receiving the impact in the twinkling of an eye of upper die base 1 and causing the damage, also can prevent simultaneously that first reset spring 17 from taking die shank 16 directly to bounce and causing the injury to the staff, the protecting effect is strong, and is relatively practical.

Example 4:

in this embodiment, referring to fig. 1, fig. 2 and fig. 3, a core of an upper die 3 is disposed opposite to a cavity of a lower die 4, so that the core of the upper die 3 and the cavity of the lower die 4 are conveniently and rapidly assembled, a material returning device 18 for rapidly ejecting a processed material is disposed in the cavity of the lower die 4, and the material returning device 18 can rapidly eject a bent round steel when the die is opened.

Further, material returned device 18 includes material returned piece 19, material returned piece 19 activity sets up in the die cavity of lower mould 4, material returned piece 19 highly is less than the degree of depth in die cavity down, material returned piece 19 gives the necessary support of round steel kink when the compound die, and a pole hole has been seted up to the bottom of 4 die cavity inner walls of lower mould, and slide in the pole hole and insert and be equipped with a bracing piece 20, the top of bracing piece 20 is fixed with material returned piece 19's bottom and is linked to each other, and the bottom of bracing piece 20 is connected with horizontal backup pad 21, the top middle part threaded connection of bracing piece 20 and backup pad 21, make things convenient for the staff to install fast and dismantle it, the bottom parallel arrangement of backup pad 21 has bottom plate 23, and be connected through elastic energy storage device 22 between backup pad 21 and the bottom plate 23, can store the energy when the compound die for material returned piece 19 when the die sinking indirectly provides.

Furthermore, the elastic energy storage device 22 includes a sleeve 25 fixed at the bottom end of the support plate 21, a chute with a downward notch is formed in the sleeve 25, a slider 26 is slidably disposed in the chute, the top end of the slider 26 is elastically connected with the top end of the chute wall through a second return spring 27, the bottom end of the slider 26 is connected with the bottom plate 23 through a connecting rod 28, two sides of the bottom end of the chute wall are provided with stoppers which can prevent the slider 26 from separating from the chute, the material returning block 19 drives the support rod 20, the support plate 21 and the sleeve 25 to move downward together under the action of the extrusion force of the round steel during mold closing, so that the slider 26 in the sleeve 25 relatively moves upward and compresses the second return spring 27, the downward kinetic energy and gravitational potential energy of the material returning block 19 are converted into the elastic potential energy of the second return spring 27, when the mold is opened, the extrusion effect of the round steel on the material returning block 19 is reduced to, under the action of the elastic force of the second return spring 27, the sleeve 25, the support plate 21, the support rod 20 and the stripper block 19 are pushed to move upwards until the round steel is ejected out of the cavity of the lower die 4.

Example 5:

the present embodiment is a preferable scheme of embodiment 4, please refer to fig. 3, a stroke adjusting screw 24 is disposed on the supporting plate 21, a head of the stroke adjusting screw 24 is disposed at the top of the supporting plate 21, a rod thread of the stroke adjusting screw 24 penetrates through the entire supporting plate 21, and a length of the rod of the stroke adjusting screw 24 penetrating through the supporting plate 21 is smaller than a distance between the supporting plate 21 and the bottom plate 23, and through the stroke adjusting screw 24 between the supporting plate 21 and the bottom plate 23, a descending height of the supporting plate 21 relative to the bottom plate 23 can be effectively adjusted according to different types and specifications of bent round steel, so as to adjust a rebound height of the material returning block 19 during material returning, which is strong in.

Example 6:

the present embodiment is another preferred scheme of embodiment 1, please refer to fig. 1 and 4, the positioning device 5 includes two supporting frames 6 fixed on the lower die holder 2, the two supporting frames 6 are symmetrically disposed with respect to the lower die 4, a threaded groove is transversely formed on one of the supporting frames 6 far from one side of the L-shaped bracket 14, a threaded rotating shaft 7 is inserted into an internal thread of the threaded groove, one end of the threaded rotating shaft 7 far from the other supporting frame 6 is fixed with a rocking handle 8, the other end of the threaded rotating shaft 7 is movably connected with an adjusting plate 9, one side of the adjusting plate 9 far from the threaded rotating shaft 7 is provided with a first clamp 10, and a second clamp 13 matched with the first clamp 10 is fixed at a top of one side of the other supporting frame 6 near.

The working process is as follows: can place the ready-selected round steel of treating processing between first anchor clamps 10 and second anchor clamps 13, rotate rocking handle 8 with the hand and drive screw thread pivot 7 and carry out axial motion, the tip of screw thread pivot 7 is at the bearing internal rotation of bearing frame 12 simultaneously to it presses close to the tip of round steel and press from both sides tightly until accomplishing the location gradually to promote regulating plate 9 and first anchor clamps 10.

Example 7:

in this embodiment, referring to fig. 4, a bearing seat 12 is disposed at a movable connection portion between the threaded rotating shaft 7 and the adjusting plate 9, a bearing is installed in the bearing seat 12, an inner ring of the bearing is connected with an end portion of the threaded rotating shaft 7 in a clamping manner, and one side of the bearing seat 12, which is far away from the threaded rotating shaft 7, is fixed on the adjusting plate 9, so that the threaded rotating shaft 7 can axially drive the adjusting plate 9 to move while moving.

Example 8:

the present embodiment is another preferable scheme of embodiment 6, please refer to fig. 4, a limiting telescopic rod 11 is further disposed between the supporting frame 6 and the adjusting plate 9 for ensuring that the adjusting plate 9 moves along the horizontal direction all the time, the limiting telescopic rod 11 is a common novel telescopic rod, and the novel telescopic rod is a telescopic hollow cylinder rod formed by rolling a metal strip or a plastic sheet.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. The bending die is characterized by comprising an upper die holder (1), a lower die holder (2), an upper die (3), a lower die (4) and a positioning device (5), wherein the upper die holder (1) is suspended at the upper part of the lower die holder (2), the upper die (3) is fixed at the bottom of the upper die holder (1), the lower die (4) matched with the upper die (3) is fixed at the top of the lower die holder (2), and the lower die holders (2) on two sides of the lower die (4) are provided with the positioning device (5) for clamping and positioning workpieces to be machined;

the mold core of the upper mold (3) is arranged opposite to the position of the cavity of the lower mold (4), and a material returning device (18) for quickly ejecting the processed material is arranged in the cavity of the lower mold (4);

material returned device (18) is including material returned piece (19), material returned piece (19) activity sets up in the die cavity of lower mould (4), and lower mould (4) die cavity inner wall's bottom has seted up a pole hole, and slides in the pole hole and insert and be equipped with a bracing piece (20), the top of bracing piece (20) links to each other with the bottom stationary phase of material returned piece (19), and the bottom of bracing piece (20) is connected with horizontal backup pad (21), the bottom parallel arrangement of backup pad (21) has bottom plate (23), and is connected through elasticity energy memory (22) between backup pad (21) and bottom plate (23).

2. The bending die according to claim 1, wherein a pressing support mechanism is arranged on the top of the upper die holder (1), the pressing support mechanism comprises an L-shaped bracket (14), the bottom end of the L-shaped bracket (14) is fixed on the lower die holder (2), a fixing rod (15) is slidably inserted in the horizontal section of the L-shaped bracket (14) along the vertical direction of the L-shaped bracket, the bottom end of the fixing rod (15) is fixed on the upper die holder (1), and a die handle (16) is arranged at the top end of the fixing rod (15).

3. The bending die according to claim 2, wherein a first return spring (17) is sleeved on an outer ring of the fixing rod (15) between the L-shaped bracket (14) and the die shank (16), and two ends of the first return spring (17) are respectively abutted against the surfaces of the L-shaped bracket (14) and the die shank (16).

4. The bending die according to claim 1, wherein the elastic energy storage device (22) comprises a sleeve (25) fixed at the bottom end of the supporting plate (21), a chute with a downward notch is formed in the sleeve (25), a sliding block (26) is slidably arranged in the chute, the top end of the sliding block (26) is elastically connected with the top end of the chute wall through a second return spring (27), and the bottom end of the sliding block (26) is connected with the bottom plate (23) through a connecting rod (28).

5. The bending die according to claim 4, wherein a stroke adjusting screw (24) is arranged on the support plate (21), the head of the stroke adjusting screw (24) is arranged on the top of the support plate (21), the rod part of the stroke adjusting screw (24) is threaded through the entire support plate (21), and the length of the rod part of the stroke adjusting screw (24) penetrating out of the support plate (21) is less than the distance between the support plate (21) and the bottom plate (23).

6. Bending die according to claim 2 or 3, wherein the positioning device (5) comprises two support frames (6) fixed on the lower die holder (2), the two support frames (6) are symmetrically arranged with respect to the lower die (4), one of the support frames (6) far away from one side of the L-shaped support frame (14) is transversely provided with a thread groove, a thread rotating shaft (7) is inserted in the thread of the thread groove, a rocking handle (8) is fixed at one end of the thread rotating shaft (7) far away from the other supporting frame (6), an adjusting plate (9) is movably connected at the other end of the thread rotating shaft (7), and one side of the adjusting plate (9) far away from the threaded rotating shaft (7) is provided with a first clamp (10), and the other side of the supporting frame (6) near the adjusting plate (9) is fixed with a second clamp (13) matched with the first clamp (10).

7. The bending die according to claim 6, wherein a bearing seat (12) is arranged at a movable connection position of the threaded rotating shaft (7) and the adjusting plate (9), a bearing is installed in the bearing seat (12), an inner ring of the bearing is connected with an end portion of the threaded rotating shaft (7) in a clamping manner, and one side, far away from the threaded rotating shaft (7), of the bearing seat (12) is fixed on the adjusting plate (9).

8. The bending die according to claim 6, wherein a limit telescopic rod (11) is further arranged between the supporting frame (6) and the adjusting plate (9) for ensuring that the adjusting plate (9) always moves in the horizontal direction.