CN212094189U

CN212094189U - Piston tube manufacturing mold

Info

Publication number: CN212094189U
Application number: CN202020439624.4U
Authority: CN
Inventors: 艾辉
Original assignee: Chongqing Zhiqi Machinery Manufacturing Co ltd
Current assignee: Chongqing Zhiqi Machinery Manufacturing Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-08
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a piston tube's preparation mould, including workstation, quiet mould and positioner. The static die comprises a lower die and an upper die, the lower die is fixed on the workbench, and the upper die is matched on the lower die. The positioning device comprises a base, a slide block and an inclined guide post; the base is fixed on the workbench, the sliding block is in sliding fit with the upper surface of the base, a sliding cavity matched with the inclined guide pillar in shape is arranged inside the sliding block, the inclined guide pillar is inserted into the sliding cavity and is in clearance fit with the sliding cavity, and one end, far away from the base, of the inclined guide pillar is connected with the upper die; a limiting block with a wedge-shaped cross section is arranged on one side of the sliding block close to the static die, a wedge-shaped groove matched with the wedge-shaped surface of the limiting block is arranged on the upper die, and a step groove matched with the right-angle surface of the limiting block is arranged on the lower die; after the upper die and the lower die are assembled, the wedge-shaped groove and the stepped groove are enclosed to form a wedge-shaped cavity, and the wedge-shaped cavity is clamped with the limiting block. When the upper die moves downwards to close the die, the inclined guide post moves in the sliding cavity and drives the slide block to move towards the static die, and the limiting block enters the wedge-shaped cavity, so that the accuracy and the speed of closing the die are improved.

Description

Piston tube manufacturing mold

Technical Field

The utility model relates to a cold thick mould field that adds especially relates to a piston tube add thick preparation mould.

Background

Piston tubes are widely used in engines of automobiles, motorcycles, and the like. In order to improve the strength of the head portion of the piston tube, the head portion of the piston tube needs to be roughened. The upsetting is usually performed by the head of the workpiece on a horizontal forging machine, the horizontal forging machine usually has two sets of mechanisms for respectively driving an upsetting punch and a clamping static die, the static die is usually designed into an upper split die and a lower split die, the upper die and the lower die clamp the workpiece during operation, and then the upsetting punch is used for upsetting the head of the workpiece. The quality and efficiency of the thickening are affected by the error of the upper die and the lower die or the time spent on die assembly. Therefore, the accuracy and efficiency of the mold clamping positioning of the upper mold and the lower mold are extremely important and become problems to be solved.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a preparation mould of piston tube, through positioner's setting, the up-and-down motion of mould provides power for positioner in the application, realizes location and restriction before the lower mould compound die, improves the accuracy and the efficiency of compound die.

The utility model relates to a preparation mould of piston tube, its characterized in that: comprises a workbench, a static mould and a positioning device;

the static die comprises a lower die and an upper die, the lower die is fixed on the workbench, and the upper die is matched with the lower die;

the positioning device comprises a base, a sliding block and an inclined guide post; the base is fixed on the workbench, the sliding block is in sliding fit with the upper surface of the base, a sliding cavity matched with the inclined guide column in shape is formed in the sliding block, the inclined guide column is inserted in the sliding cavity and is in clearance fit, and one end, far away from the base, of the inclined guide column is connected with the upper die; the inclined guide post reciprocates up and down along the upper die and reciprocates along the track of the sliding cavity in the sliding cavity. A limiting block with a wedge-shaped cross section is arranged on one side of the sliding block close to the static die, a wedge-shaped groove matched with the wedge-shaped surface of the limiting block is arranged on the upper die, and a step groove matched with the right-angle surface of the limiting block is arranged on the lower die; after the upper die and the lower die are assembled, the wedge-shaped groove and the stepped groove are enclosed to form a wedge-shaped cavity, and the wedge-shaped cavity is clamped with the limiting block. When the upper die moves downwards to close the die, the inclined guide pillar moves in the sliding cavity and simultaneously drives the slide block to slide towards the static die, and the limiting block gradually enters the wedge-shaped cavity to play a role in guiding and positioning the upper die and the lower die.

Preferably, an upper thickening cavity and an upper placing cavity which are communicated with each other are arranged on the parting surface of the upper die, the upper thickening cavity is arranged on one side of the far positioning device, a lower thickening cavity and a lower placing cavity which are communicated with each other are arranged on the parting surface of the lower die, and the lower thickening cavity is arranged on one side of the far positioning device; after the upper die and the lower die are assembled, the upper thickening cavity and the lower thickening cavity are enclosed to form a thickening cavity, and the upper placing cavity and the lower placing cavity are enclosed to form a placing cavity. The lower placing cavity is used for placing a piston tube to be thickened, after the piston tube is placed into the lower placing cavity, the upper die and the lower die are downwards matched, and the piston tube is clamped tightly. The inner diameter of the thickening cavity is larger than the outer diameter of the piston tube head before thickening, and the inner diameter of the thickening cavity is the size of the piston tube head needing thickening.

Preferably, the device further comprises a movable die, wherein the movable die comprises a core die, a sleeve die, a thickening ring, a first hydraulic cylinder and two second hydraulic cylinders; the sleeve die is provided with a through hole which penetrates through the sleeve die in the transverse direction, and the core die is in clearance fit with the through hole of the sleeve die; one end of the cover die, close to the static die, is connected with a thickening ring, the thickening ring and the core die have the same axial center line, and the inner diameter of the thickening ring is larger than the outer diameter of the core die; the thickening ring is matched with the thickening cavity, and the outer diameter of the core mold is larger than the inner diameter of the placing cavity. When the piston pipe is machined, the core mold extends into the piston pipe to reinforce the piston pipe, and the thickening ring extends into the thickening cavity to thicken the piston pipe.

Preferably, the device further comprises a first bracket, wherein the first bracket is fixed on the workbench; the first hydraulic cylinder and the two second hydraulic cylinders are both installed on the first support, a piston rod of the first hydraulic cylinder is connected with the core mold, a piston rod of the second hydraulic cylinder is connected with the cover mold, and the two second hydraulic cylinders are symmetrically arranged relative to the cover mold. The core mold moves towards the static mold under the pressure action of the first hydraulic cylinder, the sleeve mold drives the thickening ring to move towards the static mold under the action of the second hydraulic cylinder, and thickening of the piston pipe by the thickening ring is realized; under the action of different hydraulic cylinders, the independent movement of the core mold and the sleeve mold is realized without mutual influence, and meanwhile, the movement of the core mold and the sleeve mold is independently carried out, so that the demolding of the piston pipe is facilitated during the workpiece taking process.

Preferably, the mould also comprises a second bracket and a third hydraulic cylinder, wherein the third hydraulic cylinder is connected with the second bracket, and a piston rod of the third hydraulic cylinder is connected with the upper mould. The second support is arranged on the work and used for supporting the third hydraulic cylinder and the upper die.

Preferably, the second support comprises an upright column and a cross rod, the bottom end of the upright column is fixed on the workbench, the top end of the upright column is connected with the cross rod, and the third hydraulic cylinder is fixed on the cross rod; the shape of the second bracket is 7-shaped, and compared with an integral bracket, the 7-shaped bracket can reduce the material consumption and the space occupation. The cross rod, the third hydraulic cylinder, the upper die and the lower die are arranged from top to bottom.

Preferably, a convex block is arranged on the parting surface of the upper die, and a groove matched with the convex block in shape is arranged on the parting surface of the lower die and used for assisting in positioning during die assembly.

Preferably, the dovetail groove is formed in the base along the moving direction of the sliding block, the dovetail block matched with the dovetail groove in shape is arranged on the sliding block, the sliding block is moved favorably due to the dovetail groove, the moving direction of the sliding block is limited, and the limiting block can accurately enter the wedge-shaped cavity.

Preferably, a guide opening is formed in one side, close to the far base, of the sliding cavity, the guide opening is located in the end face of the far base of the sliding block and is located at an inlet of the inclined guide post, which enters the sliding cavity, and when the upper die needs to be moved upwards by a large distance to enable the inclined guide post to exit the sliding cavity, the guide opening is arranged more smoothly when the inclined guide post needs to return to the sliding cavity again.

The beneficial effects of the utility model are embodied in:

according to the piston tube thickening die, the positioning device is arranged, the power of the reciprocating motion of the upper die is utilized to drive the positioning device to limit the positioning of the sliding block of the positioning device on the upper die and the lower die, so that the die is accurately closed, and the die closing efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of a piston tube manufactured by the present invention before and after thickening;

FIG. 3 is an enlarged schematic view of a part I of the present invention;

FIG. 4 is an enlarged schematic view of part II of the present invention;

FIG. 5 is a sectional view of the embodiment of the present invention, taken along the line A;

fig. 6 is a sectional view in the direction B of the overall structure diagram of the present invention;

reference numeral, 1-a table, 2-a first bracket, 3-a movable mold, 31-a core mold, 32-a thickening ring, 33-a die set, 331-a through hole, 34-a first hydraulic cylinder, 35-a second hydraulic cylinder, 4-a stationary mold, 41-an upper mold, 42-a lower mold, 43-a third hydraulic cylinder, 44-a wedge-shaped cavity, 441-a wedge-shaped groove, 442-a step groove, 45-a thickening cavity, 451-an upper thickening cavity, 452-a lower thickening cavity, 46-a placing cavity, 461-an upper placing cavity, 462-a lower placing cavity, 411-a bump, 421-a groove, 5-a positioning device, 51-a base, 52-a slider, 53-an inclined guide post, 54-a stopper, 55-a sliding cavity, 56-a guide opening, 511-a dovetail groove, 512-dovetail block, 6-second bracket, 61-column, 62-cross bar.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

As shown in fig. 1 to 6, the utility model provides a piston tube manufacturing mold, which comprises a workbench 1, a static mold 4 and a positioning device 5.

The stationary die 4 includes a lower die 42 and an upper die 41, the lower die 42 being fixed to the table 1, and the upper die 41 being fitted on the lower die 42. The upper thickening cavity 451 and the upper placing cavity 461 which are communicated with each other are arranged on the parting surface of the upper die 41, the upper thickening cavity 451 is arranged on one side of the far positioning device 5, the lower thickening cavity 452 and the lower placing cavity 462 which are communicated with each other are arranged on the parting surface of the lower die 42, and the lower thickening cavity 452 is arranged on one side of the far positioning device 5. When the upper mold 41 and the lower mold 42 are closed, the upper thickening chamber 451 and the lower thickening chamber 452 enclose a thickening chamber 45, and the upper placing chamber 461 and the lower placing chamber 462 enclose a placing chamber 46. The lower placing chamber 462 is used for placing a piston tube to be thickened, and after the piston tube is placed in the lower placing chamber 462, the upper die 41 is downwards matched with the lower die 42, and the piston tube is clamped tightly. The inner diameter of the thickening cavity 45 is larger than the outer diameter of the head of the piston tube before thickening, and the inner diameter of the thickening cavity 45 is the size of the head of the piston tube needing thickening.

The fixed die 4 is provided with a positioning device 5 for die assembly positioning of an upper die and a lower die, and the positioning device 5 comprises a base 51, a slide block 52 and an inclined guide post 53. The base 51 is fixed on the workbench 1, a dovetail groove 511 is arranged on the base 51 along the moving direction of the sliding block 52, and a dovetail block 512 matched with the dovetail groove 511 in shape is arranged on the sliding block 52, so that the sliding block 52 is in sliding fit with the upper surface of the base 51. The dovetail grooves 511 are provided to facilitate the movement of the slider 52 and restrict the moving direction of the slider 52. The slide block 52 is internally provided with a slide cavity 55 matched with the inclined guide post 53 in shape, the inclined guide post 53 is inserted in the slide cavity 55 and is in clearance fit, and one end of the inclined guide post 53, which is far away from the base 51, is connected with the upper die 41. The angle guide 53 reciprocates along the track of the slide chamber 55 in accordance with the up-and-down reciprocating motion of the upper die 41. The side of the sliding cavity 55 close to the base 51 is provided with a guide opening 56, the guide opening 56 is located on the end surface of the slider 52 close to the base 51 and is located at an inlet of the inclined guide post 53 entering the sliding cavity 55, and when the upper die 41 needs to be moved up by a large distance to enable the inclined guide post 53 to exit the sliding cavity 55, the guide opening 56 is arranged more smoothly when the inclined guide post 53 needs to return to the sliding cavity 55 again. A limiting block 54 with a wedge-shaped cross section is arranged on one side of the sliding block 52 close to the static mold 4, a wedge-shaped groove 441 matched with the wedge-shaped surface of the limiting block 54 is arranged on the upper mold 41, and a step groove matched with the right-angle surface of the limiting block 54 is arranged on the lower mold 42. After the upper die 41 and the lower die 42 are closed, the wedge-shaped groove 441 and the stepped groove 442 enclose a wedge-shaped cavity 44, and the wedge-shaped cavity 44 is clamped with the limiting block 54. When the upper die 41 moves downwards to close the dies, the inclined guide post 53 moves in the sliding cavity 55 and simultaneously drives the slide block 52 to slide towards the static die 4, and the limiting block 54 gradually enters the wedge-shaped cavity 44 to play a guiding and positioning role in closing the upper die 42 and the lower die 42.

The parting surface of the upper die 41 is provided with a convex block 411, and the parting surface of the lower die 42 is provided with a groove 421 matched with the convex block 411 in shape, so as to assist in positioning during die assembly.

The device also comprises a movable die 3, wherein the movable die 3 comprises a core die 31, a sleeve die 33, a thickening ring 32, a first hydraulic cylinder 34 and two second hydraulic cylinders 35; the cover die 33 is provided with a through hole 331 which transversely penetrates through the cover die, and the core die 31 is in clearance fit with the through hole 331 of the cover die 33; one end of the sleeve die 33 close to the stationary die 4 is connected with a thickening ring 32, the thickening ring 32 and the core die 31 are coaxial with the central line, and the inner diameter of the thickening ring 32 is larger than the outer diameter of the core die 31; the thickened ring 32 is matched with the thickened cavity 45, and the outer diameter of the core mould 31 is larger than the inner diameter of the placing cavity 46. During machining, the core die 31 extends into the piston pipe to reinforce the piston pipe, and the thickening ring 32 extends into the thickening cavity 45 to thicken the piston pipe. The power of the movable mold 3 is provided by a hydraulic cylinder.

The device also comprises a first bracket 2, and the first bracket 2 is fixed on the workbench 1. First pneumatic cylinder 34 and two second pneumatic cylinders 35 are all installed on first support 2, and the piston rod of first pneumatic cylinder 34 is connected with mandrel 31, and the piston rod of second pneumatic cylinder 35 is connected with cover mould 33, and the relative cover mould 33's of two second pneumatic cylinders 35 position is symmetrical arrangement. In practical applications, the number of the second hydraulic cylinders 35 may be adjusted as needed. The core mold 31 moves towards the static mold 4 under the pressure action of the first hydraulic cylinder 34, the sleeve mold 33 drives the thickening ring 32 to move towards the static mold 4 under the action of the second hydraulic cylinder 35, and thickening of the piston pipe by the thickening ring 32 is realized; under the action of different hydraulic cylinders, the core die 31 and the sleeve die 33 can move independently without being influenced, and meanwhile, the core die 31 and the sleeve die 33 can move independently, so that the piston tube can be conveniently demoulded during taking.

In addition, the device also comprises a second bracket 6 and a third hydraulic cylinder 43, wherein the third hydraulic cylinder 43 is connected with the second bracket 6, and a piston rod of the third hydraulic cylinder 43 is connected with the upper die 41. The second bracket 6 is mounted on the work for supporting the third hydraulic cylinder 43 and the upper die 41. The second bracket 6 comprises a vertical column 61 and a cross rod 62, the bottom end of the vertical column 61 is fixed on the workbench 1, the top end of the vertical column 61 is connected with the cross rod 62, and the third hydraulic cylinder 43 is fixed on the cross rod 62; the shape of the second bracket 6 is 7-shaped, and compared with an integral bracket, the 7-shaped bracket can reduce the material consumption and the space occupation.

In the present embodiment, the cross bar 62, the third hydraulic cylinder 43, the upper die 41, and the lower die 42 are spatially arranged from top to bottom, and the movable die 3 and the stationary die 4 are correspondingly arranged on the same horizontal plane.

It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a preparation mould of piston tube which characterized in that: comprises a workbench, a static mould and a positioning device;

the positioning device comprises a base, a sliding block and an inclined guide post; the base is fixed on the workbench, the sliding block is in sliding fit with the upper surface of the base, a sliding cavity matched with the inclined guide column in shape is formed in the sliding block, the inclined guide column is inserted in the sliding cavity and is in clearance fit, and one end, far away from the base, of the inclined guide column is connected with the upper die; a limiting block with a wedge-shaped cross section is arranged on one side of the sliding block close to the static die, a wedge-shaped groove matched with the wedge-shaped surface of the limiting block is arranged on the upper die, and a step groove matched with the right-angle surface of the limiting block is arranged on the lower die; after the upper die and the lower die are assembled, the wedge-shaped groove and the stepped groove are enclosed to form a wedge-shaped cavity, and the wedge-shaped cavity is clamped with the limiting block.

2. The mold for producing a piston tube according to claim 1, wherein:

an upper thickening cavity and an upper placing cavity which are communicated are arranged on the parting surface of the upper die, the upper thickening cavity is arranged on one side of the far positioning device, a lower thickening cavity and a lower placing cavity which are communicated are arranged on the parting surface of the lower die, and the lower thickening cavity is arranged on one side of the far positioning device; after the upper die and the lower die are assembled, the upper thickening cavity and the lower thickening cavity are enclosed to form a thickening cavity, and the upper placing cavity and the lower placing cavity are enclosed to form a placing cavity.

3. The mold for producing a piston tube according to claim 1, wherein: the device also comprises a moving die;

the movable die comprises a core die, a cover die, a thickening ring, a first hydraulic cylinder and two second hydraulic cylinders; the sleeve die is provided with a through hole which penetrates through the sleeve die in the transverse direction, and the core die is in clearance fit with the through hole of the sleeve die; one end of the cover die, close to the static die, is connected with a thickening ring, the thickening ring and the core die have the same axial center line, and the inner diameter of the thickening ring is larger than the outer diameter of the core die; the thickening ring is matched with the thickening cavity, and the outer diameter of the core mold is larger than the inner diameter of the placing cavity.

4. A mold for manufacturing a piston tube according to claim 3, wherein: the device also comprises a first bracket;

the first support is fixed on the workbench, the first hydraulic cylinder and the two second hydraulic cylinders are both installed on the first support, a piston rod of the first hydraulic cylinder is connected with the core mold, a piston rod of the second hydraulic cylinder is connected with the cover mold, and the two second hydraulic cylinders are symmetrically arranged relative to the cover mold.

5. The mold for producing a piston tube according to claim 1, wherein: the hydraulic cylinder also comprises a second bracket and a third hydraulic cylinder;

the third hydraulic cylinder is connected with the second support, and a piston rod of the third hydraulic cylinder is connected with the upper die.

6. The mold for producing a piston tube according to claim 5, wherein:

the second bracket comprises a vertical column and a cross bar; the bottom end of the upright post is fixed on the workbench, the top end of the upright post is connected with the cross rod, and the third hydraulic cylinder is fixed on the cross rod; the cross rod, the third hydraulic cylinder, the upper die and the lower die are arranged from top to bottom.

7. The mold for producing a piston tube according to claim 1, wherein:

and a convex block is arranged on the parting surface of the upper die, and a groove matched with the convex block in shape is arranged on the parting surface of the lower die.

8. The mold for producing a piston tube according to claim 1, wherein:

the base is provided with a dovetail groove along the moving direction of the sliding block, and the sliding block is provided with a dovetail block matched with the dovetail groove in shape.

9. The mold for producing a piston tube according to claim 1, wherein:

one side of the sliding cavity close to the base is provided with a guide opening.