CN215508842U - Bolt cold heading machine is used in eccentric shaft production - Google Patents

Abstract

The utility model belongs to the technical field of eccentric shaft machining, and particularly relates to a bolt cold header for eccentric shaft production, which comprises a base, a lower die holder, an upper die holder, a rear punching pad rod and a front punching pad rod, wherein the top end surface of the base is sequentially provided with a first station, a second station, a third station, a fourth station, a fifth station and a sixth station from right to left, and the first station, the second station, the third station, the fourth station, the fifth station and the sixth station are respectively provided with the rear punching pad rod, the rear punching rod, the front punching rod and the front punching pad rod; according to the utility model, the raw materials are sequentially placed in the first station, the second station, the third station, the fourth station, the fifth station and the sixth station by a worker to carry out material arrangement, taper forming, head preforming, head rough forming, head forming and head finishing on the raw materials, so that the workpiece is convenient to machine and form, the generation of leftover materials is reduced, and the cost is reduced by only one process.

Description

Bolt cold heading machine is used in eccentric shaft production

Technical Field

The utility model relates to the technical field of eccentric shaft machining, in particular to a bolt cold header for eccentric shaft production.

Background

The eccentric shaft is a workpiece with the excircle parallel to the axis of the excircle and not coincident with the axis of the excircle, is generally fixed on a motor rotating shaft through an eccentric hole and performs cam motion when the motor is started, and therefore, the eccentric shaft is widely applied to automobiles, engines, pumps and the like.

At present, the machining process of the eccentric shaft is generally divided into: customizing a bar → blanking → machining a center with an eccentric shaft → machining with a step → machining with a conical surface, however, the existing eccentric shaft machining device has the problems of low material utilization rate, large machining allowance and the like; therefore, the bolt cold heading machine for producing the eccentric shaft is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to make up for the defects of the prior art and solve the problems of low material utilization rate and large machining allowance of the conventional eccentric shaft machining device, the utility model provides a bolt cold header for eccentric shaft production.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a bolt cold header for eccentric shaft production, which comprises a base, a lower die holder, an upper die holder, a rear punching pad rod and a front punching pad rod, wherein the top end surface of the base is sequentially provided with a first station, a second station, a third station, a fourth station, a fifth station and a sixth station from right to left, the first station, the second station, the third station, the fourth station, the fifth station and the sixth station are respectively provided with the rear punching pad rod, a rear punching rod, a front punching rod and the front punching pad rod, the bottom of an inner cavity of the lower die holder is connected with the rear punching pad rod in a sliding manner, the bottom end of the rear punching pad rod extends into the inner cavity of the base, the top end of the rear punching rod is fixedly connected with the rear punching rod, the top end of the rear punching rod is matched with the bottom of an injection molding cavity, the upper die holder is arranged above the lower die holder, the inner cavity of the upper die holder is provided with the front punching pad rod, and the bottom end of the front punching pad rod is fixedly connected with the front punching rod, the bottom end of the front punching rod is matched with the injection mold cavity on the lower mold base, and the bottom of the rear punching cushion rod is provided with an ejection mechanism; the staff carries out material arranging, tapering shaping, head preforming, head coarse forming, head shaping, head finishing to it through putting into first station, second station, third station, fourth station, fifth station and sixth station with the raw materials in proper order for the work piece is convenient for machine-shaping, has reduced the production of leftover bits, and has only accomplished with a process and has reduced the cost.

Preferably, a T-shaped cushion block is arranged in an inner cavity of the upper die holder at the third station, a die plate is fixedly connected to the bottom end of the T-shaped cushion block, a front punch rod is sleeved in the die plate, and the bottom ends of the front punch rod and the die plate are matched with an injection die cavity on the lower die holder; through the cooperation between the T-shaped cushion block, the die plate and the front punch rod arranged in the upper die base of the third station, the head of the workpiece can be preformed and stamped conveniently.

Preferably, the T-shaped cushion block is sleeved with a spring, the top end of the spring is fixedly connected with the T-shaped cushion block, and the bottom end of the spring is fixedly connected with the top of the die plate; the impact generated when the die plate and the front punching rod are downwards punched to be in contact with the lower die base can be reduced through the spring arranged in the upper die base of the third station.

Preferably, the ejection mechanism comprises a screw rod, an annular sleeve rod, an annular guide frame and an installation block, six annular guide frames are fixedly connected in an inner cavity of the base, the annular guide frames correspond to the rear cushion rod, the bottom end of the rear cushion rod is fixedly connected with the installation block, the installation block is in sliding connection with the annular guide frames, the bottom of each annular guide frame is rotatably connected with the top end of the screw rod through a bearing, the bottom end of the screw rod is rotatably connected with the support plate, the annular sleeve rod is slidably connected onto the screw rod, the top end of the annular sleeve rod penetrates through the annular guide frames and is fixedly connected with the bottom end of the installation block, and the bottom of the screw rod is connected with the rotating shaft through a transmission mechanism; the screw rod rotates to drive the annular sleeve rod to slide upwards, so that the mounting block fixedly connected with the annular sleeve rod drives the rear cushion rod to slide upwards to eject the workpiece out of the injection mold cavity, and the workpiece is convenient to collect.

Preferably, the transmission mechanism comprises a first bevel gear and a second bevel gear, the bottom of the screw rod is sleeved with the second bevel gear, the second bevel gear is meshed with the first bevel gear, and the first bevel gear is sleeved with the rotating shaft; the rotating shaft drives the first bevel gear rotating shaft, so that the second bevel gear meshed with the first bevel gear drives the screw rod to rotate, ejection of the rear cushion rod is achieved, and transmission is facilitated.

Preferably, the right end face of the base is fixedly connected with a control box, a motor is fixedly installed in an inner cavity of the control box, an output end of the motor is fixedly connected with the right end of a rotating shaft, and the left end of the rotating shaft is rotatably connected with the left end face of the inner cavity of the base through a bearing; the motor in the control box drives the rotating shaft to rotate, so that the rotating shaft drives the screw rod to rotate through the transmission mechanism, and then ejection action is realized.

Preferably, the bottom of the annular guide frame is provided with an annular through groove, and the annular loop bar is connected with the annular through groove in a sliding manner; through the sliding fit between the annular through groove on the annular guide frame and the annular sleeve rod, the annular sleeve rod only slides in the vertical direction on the screw rod, and therefore the rear cushion rod can slide conveniently.

Preferably, the inner walls of the two sides of the annular guide frame are respectively provided with a T-shaped limiting groove, the two sides of the mounting block are respectively fixedly connected with a T-shaped limiting block, and the T-shaped limiting blocks are connected with the T-shaped limiting grooves in a sliding manner; through the sliding fit between the T-shaped limiting block and the T-shaped limiting groove, the effect of auxiliary guiding can be achieved for the ejection sliding of the rear cushion rod, the limiting effect can be achieved when the rear cushion rod is subjected to return stroke action, and the contact between the bottom of the annular sleeve rod and the bevel gear is avoided.

The utility model has the advantages that:

1. according to the utility model, the raw materials are sequentially placed in the first station, the second station, the third station, the fourth station, the fifth station and the sixth station by a worker to be subjected to material arrangement, taper forming, head preforming, head rough forming, head forming and head finishing, so that the workpiece is convenient to machine and form, the generation of leftover materials is reduced, and the cost is reduced by only one procedure;

2. according to the utility model, through the matching among the motor, the rotating shaft, the first bevel gear, the second bevel gear, the screw rod, the annular sleeve rod, the annular guide frame and the mounting block, the mounting block can drive the cushion rod to slide upwards to eject a workpiece out of the injection mold cavity, so that the workpiece is convenient to collect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall internal structure of a first embodiment;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a portion of the enlarged structure at B in FIG. 1;

FIG. 4 is a schematic partial perspective view according to a first embodiment;

fig. 5 is a partial structural diagram in the second embodiment.

In the figure: 1. a base; 2. a first station; 3. a second station; 4. a third station; 5. a fourth station; 6. a fifth station; 7. a sixth station; 8. a lower die holder; 9. an upper die holder; 10. a rear punch pad bar; 11. punching the rod; 12. a front punching rod; 13. forward punching the cushion rod; 14. a T-shaped cushion block; 15. a spring; 16. punching a template; 17. a motor; 18. a rotating shaft; 19. a first bevel gear; 20. a second bevel gear; 21. a screw rod; 22. an annular loop bar; 23. an annular guide frame; 24. mounting blocks; 25. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-4, a bolt cold header for eccentric shaft production comprises a base 1, a lower die holder 8, an upper die holder 9, a rear punch pad bar 10 and a front punch pad bar 13, wherein a first station 2, a second station 3, a third station 4, a fourth station 5, a fifth station 6 and a sixth station 7 are sequentially arranged on the top end surface of the base 1 from right to left, the rear punch pad bar 10, the rear punch bar 11, the front punch bar 12 and the front punch pad bar 13 are respectively arranged in the first station 2, the second station 3, the third station 4, the fourth station 5, the fifth station 6 and the sixth station 7, the rear punch pad bar 10, the rear punch bar 11, the front punch bar 12 and the front punch pad bar 13 are slidably connected to the bottom of an inner cavity of the lower die holder 8, the bottom end of the rear punch pad bar 10 extends into the inner cavity of the base 1, the top end of the rear punch pad bar 10 is fixedly connected to the rear punch bar 11, the top end of the rear punch bar 11 is adapted to the bottom of an injection die cavity, the upper die holder 9 is arranged above the lower die holder 8, a front punching pad rod 13 is arranged in an inner cavity of the upper die holder 9, a front punching rod 12 is fixedly connected to the bottom end of the front punching pad rod 13, the bottom end of the front punching rod 12 is matched with a die injection cavity on the lower die holder 8, and an ejection mechanism is arranged at the bottom of the rear punching pad rod 10; during operation, the staff carries out the material all in one piece, the tapering shaping, the head preforming, head coarse forming, the head shaping, the head finishing through putting into first station 2 with the raw materials in proper order, second station 3, third station 4, fourth station 5, fifth station 6 and sixth station 7 to it for the work piece is convenient for machine-shaping, has reduced the production of leftover bits, and only accomplishes the cost reduction with a process, compare with traditional technology, greatly improved the utilization ratio of material, the course of working is high-efficient coherent, people's intensity of labour has been reduced.

A T-shaped cushion block 14 is arranged in an inner cavity of the upper die holder 9 of the third station 4, a die plate 16 is fixedly connected to the bottom end of the T-shaped cushion block 14, a front punch rod 12 is sleeved in the die plate 16, and the bottom ends of the front punch rod 12 and the die plate 16 are matched with an injection die cavity on the lower die holder 8; during working, the T-shaped cushion block 14, the die plate 16 and the front punch bar 12 arranged in the upper die base 9 of the third station 4 are matched, so that head pre-forming stamping is conveniently carried out on a workpiece.

The T-shaped cushion block 14 is sleeved with a spring 15, the top end of the spring 15 is fixedly connected with the T-shaped cushion block 14, and the bottom end of the spring 15 is fixedly connected with the top of the die plate 16; in operation, the impact generated when the die plate 16 and the front punch rod 12 are pressed downwards to contact with the lower die holder 8 can be reduced through the spring 15 arranged in the upper die holder 9 of the third station 4.

The ejection mechanism comprises a screw rod 21, an annular sleeve rod 22, an annular guide frame 23 and a mounting block 24, six annular guide frames 23 are fixedly connected in an inner cavity of the base 1, the annular guide frames 23 correspond to the rear punching cushion rod 10, the bottom end of the rear punching cushion rod 10 is fixedly connected with the mounting block 24, the mounting block 24 is in sliding connection with the annular guide frame 23, the bottom of the annular guide frame 23 is rotatably connected with the top end of the screw rod 21 through a bearing, the bottom end of the screw rod 21 is rotatably connected with a support plate, the screw rod 21 is slidably connected with the annular sleeve rod 22, the top end of the annular sleeve rod 22 penetrates through the annular guide frame 23 and is fixedly connected with the bottom end of the mounting block 24, and the bottom end of the screw rod 21 is connected with the rotating shaft 18 through a transmission mechanism; when the punching die is in use, when a workpiece needs to be taken out after punching is finished, the screw rod 21 rotates to drive the annular sleeve rod 22 to slide upwards, so that the mounting block 24 fixedly connected with the annular sleeve rod 22 drives the rear punching pad rod 10 to slide upwards to eject the workpiece from the injection die cavity, and the workpiece is convenient to collect.

The transmission mechanism comprises a first bevel gear 19 and a second bevel gear 20, the bottom of the screw rod 21 is sleeved with the second bevel gear 20, the second bevel gear 20 is meshed with the first bevel gear 19, and the first bevel gear 19 is sleeved with the rotating shaft 18; when the rear cushion rod 10 works, the rotating shaft 18 drives the first bevel gear 19 to rotate, so that the second bevel gear 20 meshed with the first bevel gear 19 drives the screw rod 21 to rotate, the ejection action of the rear cushion rod 10 is realized, and the transmission is facilitated.

The right end face of the base 1 is fixedly connected with a control box, an inner cavity of the control box is fixedly provided with a motor 17, an output end of the motor 17 is fixedly connected with the right end of a rotating shaft 18, and the left end of the rotating shaft 18 is rotatably connected with the left end face of the inner cavity of the base 1 through a bearing; when the ejection mechanism works, the motor 17 in the control box drives the rotating shaft 18 to rotate, so that the rotating shaft 18 drives the screw rod 21 to rotate through the transmission mechanism, and then ejection action is realized.

The bottom of the annular guide frame 23 is provided with an annular through groove, and the annular loop bar 22 is connected with the annular through groove in a sliding manner; during operation, the annular through groove on the annular guide frame 23 is in sliding fit with the annular sleeve rod 22, so that the annular sleeve rod 22 only slides on the screw rod 21 in the vertical direction, and the sliding of the rear cushion rod 10 is facilitated.

The inner walls of the two sides of the annular guide frame 23 are respectively provided with a T-shaped limiting groove, the two sides of the mounting block 24 are respectively fixedly connected with a T-shaped limiting block, and the T-shaped limiting blocks are connected with the T-shaped limiting grooves in a sliding manner; during operation, through the sliding fit between the T-shaped limiting blocks on the two sides of the mounting block 24 and the T-shaped limiting grooves on the annular guide frame 23, the effect of assisting in guiding the ejection sliding of the back punch pad rod 10 can be achieved, the limiting effect of the back punch pad rod 10 during return stroke action can be achieved, and the bottom of the annular sleeve rod 22 is prevented from contacting with the second bevel gear 20.

Example two

Referring to fig. 5, in a first comparative example, as another embodiment of the present invention, a rubber pad 25 is fixedly connected to the bottom of the inner cavity of the base 1 inside the annular guide frame 23, a through hole is formed in the rubber pad 25, and the rear cushion rod 10 is slidably connected to the through hole; when the ejection mechanism works, the rubber pad 25 arranged on the inner side of the annular guide frame 23 can reduce the impact generated by the lifting of the rear cushion rod 10 driven by the ejection mechanism and the inner wall of the base 1, and the service life of the ejection mechanism is prolonged.

The working principle is that a worker puts raw materials into a first station 2, a second station 3, a third station 4, a fourth station 5, a fifth station 6 and a sixth station 7 in sequence to carry out material arrangement, taper forming, head preforming, head rough forming, head forming and head finishing on the raw materials, so that a workpiece is convenient to machine and form, the generation of leftover materials is reduced, and the cost is reduced by only one process, compared with the traditional process, the utilization rate of the materials is greatly improved, the machining process is efficient and continuous, the labor intensity of people is reduced, the impact generated when a punching plate 16 and a front punching rod 12 are in contact with a lower die holder 8 in downward punching can be reduced by a spring 15 arranged in an upper die holder 9 of the third station 4, when the workpiece needs to be taken out after punching is finished, a motor 17 in a control box drives a rotating shaft 18 to rotate, so that a bevel gear I19 sleeved with the rotating shaft 18 drives a bevel gear II 20 to rotate, thereby leading the screw rod 21 sleeved with the bevel gear II 20 to rotate, driving the annular sleeve rod 22 to slide upwards through the rotation of the screw rod 21, so that the mounting block 24 fixedly connected with the annular loop bar 22 drives the rear cushion bar 10 to slide upwards, so that the back punch 11 can eject the workpiece out of the injection molding cavity for collecting the workpiece, the annular sleeve rod 22 only slides on the screw rod 21 in the vertical direction through the sliding fit between the annular through groove on the annular guide frame 23 and the annular sleeve rod 22, therefore, the sliding of the back punch pad rod 10 is facilitated, the T-shaped limiting blocks on the two sides of the mounting block 24 are in sliding fit with the T-shaped limiting grooves in the annular guide frame 23, the effect of assisting in guiding the ejection sliding of the back punch pad rod 10 can be achieved, the limiting effect of the back punch pad rod 10 during return stroke can be achieved, and the bottom of the annular sleeve rod 22 is prevented from being contacted with the bevel gear II 20.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims (8)

1. The utility model provides an eccentric shaft production is with bolt cold heading machine which characterized in that: the stamping die comprises a base (1), a lower die holder (8), an upper die holder (9), a rear stamping pad rod (10) and a front stamping pad rod (13), wherein a first station (2), a second station (3), a third station (4), a fourth station (5), a fifth station (6) and a sixth station (7) are sequentially arranged on the top end surface of the base (1) from right to left, the rear stamping pad rod (10), a rear stamping rod (11), a front stamping rod (12) and the front stamping pad rod (13) are respectively arranged in the first station (2), the second station (3), the third station (4), the fourth station (5), the fifth station (6) and the sixth station (7), the rear stamping pad rod (10), the rear stamping rod (10), the front stamping rod (12) and the front stamping pad rod (13) are slidably connected to the bottom of an inner cavity of the lower die holder (8), the bottom end of the rear stamping pad rod (10) extends into the inner cavity of the base (1), and the rear stamping rod (11) is fixedly connected to the top end of the rear stamping pad rod (10), the die comprises a die holder (8), a rear punching rod (11) and a front punching rod (12), wherein the top end of the rear punching rod (11) is matched with the bottom of a die injection cavity, an upper die holder (9) is arranged above the lower die holder (8), a front punching pad rod (13) is arranged in an inner cavity of the upper die holder (9), the bottom end of the front punching pad rod (13) is fixedly connected with the front punching rod (12), the bottom end of the front punching rod (12) is matched with the die injection cavity on the lower die holder (8), and an ejection mechanism is arranged at the bottom of the rear punching pad rod (10).

2. The bolt cold header for eccentric shaft production of claim 1, wherein: a T-shaped cushion block (14) is arranged in an inner cavity of the upper die holder (9) of the third station (4), a die plate (16) is fixedly connected to the bottom end of the T-shaped cushion block (14), a front punch rod (12) is sleeved in the die plate (16), and the bottom ends of the front punch rod (12) and the die plate (16) are matched with a die injection cavity on the lower die holder (8).

3. The bolt cold header for eccentric shaft production of claim 2, wherein: the T-shaped cushion block (14) is sleeved with a spring (15), the top end of the spring (15) is fixedly connected with the T-shaped cushion block (14), and the bottom end of the spring (15) is fixedly connected with the top of the die plate (16).

4. The bolt cold header for eccentric shaft production of claim 3, wherein: the ejection mechanism comprises a screw rod (21), an annular loop bar (22), an annular guide frame (23) and a mounting block (24), six annular guide frames (23) are fixedly connected in the inner cavity of the base (1), the annular guide frames (23) correspond to the rear punching cushion rod (10), the bottom end of the rear punching cushion rod (10) is fixedly connected with an installation block (24), the installation block (24) is connected with an annular guide frame (23) in a sliding way, the bottom of the annular guide frame (23) is rotationally connected with the top end of the screw rod (21) through a bearing, the bottom end of the screw rod (21) is rotationally connected with the support plate, an annular loop bar (22) is connected on the screw rod (21) in a sliding way, the top end of the annular loop bar (22) penetrates through the annular guide frame (23) and is fixedly connected with the bottom end of the mounting block (24), the bottom of the screw rod (21) is connected with the rotating shaft (18) through a transmission mechanism.

5. The bolt cold header for eccentric shaft production of claim 4, wherein: the transmission mechanism comprises a first bevel gear (19) and a second bevel gear (20), the second bevel gear (20) is sleeved at the bottom of the screw rod (21), the second bevel gear (20) is meshed with the first bevel gear (19) in a connecting mode, and the first bevel gear (19) is sleeved with the rotating shaft (18).

6. The bolt cold header for eccentric shaft production of claim 5, wherein: the right side terminal surface fixedly connected with control box of base (1), the inner chamber fixed mounting of control box has motor (17), the output of motor (17) and the right-hand member rigid coupling of pivot (18), the left end of pivot (18) is passed through the bearing and is connected with the left side terminal surface rotation of base (1) inner chamber.

7. The bolt cold header for eccentric shaft production of claim 6, wherein: the bottom of the annular guide frame (23) is provided with an annular through groove, and the annular loop bar (22) is connected with the annular through groove in a sliding mode.

8. The bolt cold header for eccentric shaft production of claim 7, wherein: all be equipped with T type spacing groove on the both sides inner wall of annular leading truck (23), the equal rigid coupling in both sides of installation piece (24) has T type stopper, T type stopper and T type spacing groove sliding connection.

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