CN210289865U

CN210289865U - Automobile engine spring holder and cold heading former of this spring holder

Info

Publication number: CN210289865U
Application number: CN201921456604.1U
Authority: CN
Inventors: 关慧琳; 于泽洋; 杨光远
Original assignee: Zhejiang Liming Zhizao Co ltd
Current assignee: Zhejiang Liming Zhizao Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-04-10
Anticipated expiration: 2029-09-03

Abstract

The utility model belongs to the technical field of machinery, a cold-heading former of automobile engine spring holder and this spring holder is related to, it has solved the relatively poor scheduling technical problem of current spring holder damping performance. The spring seat comprises a body, wherein one end of the body extends outwards along the radial direction of the body to form an annular boss, and one end of the valve spring can abut against the boss; the valve is characterized in that the center of the body is sequentially provided with a coaxial mounting hole, a first damping hole and a second damping hole, the mounting hole can be used for being matched with a valve rod of the valve, the aperture of the first damping hole is smaller than that of the second damping hole, and a step surface for placing a damping pad is formed between the first damping hole and the second damping hole. During the use, can establish the valve spring cover and lean on in the boss, place the shock pad in shock attenuation hole one and shock attenuation hole two, then adorn the valve rod in the mounting hole, the shock pad can absorb the impact and the vibrations that the during operation produced, effectively reduces vibrations and noise.

Description

Automobile engine spring holder and cold heading former of this spring holder

Technical Field

The utility model belongs to the technical field of machinery, a cold-heading former of automobile engine spring holder and this spring holder is related to.

Background

A valve spring seat is an important part of an engine valve train, and is generally cylindrical in shape and has two steps with a central through hole therein. At present, the machining and forming methods for the valve spring seat mainly comprise two methods: one is to process the corresponding step on the formed cylindrical blank by cutting or milling and then punch a hole; the other type is that the steel is cut into a small section through cold heading forming, and then the steel is sequentially subjected to cold heading forming through a plurality of cold heading stations, and because each existing cold heading station works under respective power source, the whole equipment is complex, the plurality of cold heading stations cannot synchronously run, and the production efficiency is low.

In order to solve the problems, Chinese patent CN 107952921A discloses a valve spring seat cold heading forming device, which comprises a base, a steel cutting station and a plurality of cold heading stations are arranged on the base side by side, each cold heading station is provided with a mold core and an extrusion ejector rod, each mold core is provided with a cavity matched with the corresponding extrusion ejector rod, each cavity is also internally provided with a cavity ejector rod used for ejecting a formed blank, a blank transfer device is further arranged between the cold heading stations, the blank device comprises a mounting seat, the mounting seat corresponds to a clamping head arranged between the adjacent cold heading stations, and the mounting seat is connected to the base through a swing arm.

Although the structure can ensure synchronous operation of a plurality of cold heading stations through a common driving source, the production efficiency is improved. However, due to the machining precision error of the parts or the difference in the model size of the spring seat to be machined, the cavity ejector rod at the fixed position may not eject the blank, and the extrusion ejector rod at the fixed position may also not extrude the workpiece in the expected shape. In addition, when the existing spring seat is actually used, the generated vibration and noise are large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an above-mentioned problem to prior art exists provides an automobile engine spring holder, the utility model discloses the first technical problem that will solve is: how to reduce the vibrations and the noise that produce when this spring holder uses.

The first objective of the present invention can be achieved by the following technical solutions:

an automobile engine spring seat comprises a body, wherein one end of the body extends outwards along the radial direction of the body to form an annular boss, and one end of a valve spring can abut against the boss; the shock absorber is characterized in that a coaxial mounting hole, a first shock absorption hole and a second shock absorption hole are sequentially formed in the center of the body, the mounting hole can be used for being matched with the valve rod of the valve, the aperture of the first shock absorption hole is smaller than that of the second shock absorption hole, and a step surface used for placing a shock absorption pad is formed between the first shock absorption hole and the second shock absorption hole.

The working principle is as follows: during the use, can establish the valve spring cover and lean on in the boss, place the shock pad in shock attenuation hole one and shock attenuation hole two, then adorn the valve rod in the mounting hole, the shock pad can absorb the impact and the vibrations that the during operation produced, effectively reduces vibrations and noise.

The utility model discloses an above-mentioned problem to current technique exists provides a cold-heading former of above-mentioned spring holder, the utility model discloses the technical problem that the second will solve is: how to process the spring holder that the damping performance is good, and can compensate equipment part error and all kinds of length size requirements of spring holder.

The second objective of the present invention can be achieved by the following technical solutions:

the cold heading forming equipment for the spring seat is characterized by comprising a base, wherein 7 cold heading stations are arranged on the base at intervals, and the 7 cold heading stations sequentially comprise a shape correction station, a upsetting station, a step forming station, a first punching station, a second punching station, a third punching station and a shaping station; each cold-heading station comprises a mold core and an extrusion ejector rod, a cavity matched with the extrusion ejector rod is formed in the mold core, and the length of the extrusion ejector rod is adjustable.

The working principle is as follows: during the use, the cylindrical steel that the accessible above-mentioned 7 cold-heading stations will cut progressively becomes above-mentioned spring holder, and station one that wherein punches a hole, station two, the station three that punches a hole are used for cutting mounting hole, shock attenuation hole one and shock attenuation hole two in proper order to the spring holder that the shaping shock attenuation performance is good. In addition, because the length of extrusion ejector pin is adjustable, even there is certain precision error in the part of cold-heading equipment, perhaps the size requirement of spring holder on length is different, also can process through the length of adjusting the extrusion ejector pin.

In the cold-heading former of foretell spring holder, cold-heading former still includes linear drive source one, the output of linear drive source one is fixed with drive seat one, the inner of extrusion ejector pin sets up on this drive seat one. And the linear driving source moves to drive the extrusion ejector rods to move into the cavities of the mold cores simultaneously so as to process the blanks.

In the cold-heading former of foretell spring holder, the extrusion ejector pin includes fixing base, the body of rod and extrusion head, the fixing base is fixed in drive seat on, seted up connecting hole one and connecting hole two that are linked together in the fixing base, the cross-section that is located inner connecting hole one is squarely, and the cross-section that is located outer connecting hole two is circular, the first half cross-section of the body of rod be square and with a connecting hole sliding fit, the first half cross-section of the body of rod be circular and with two sliding fit of connecting hole, the terminal surface of fixing base is provided with the drive arrangement that can drive body of rod rectilinear movement, the extrusion head is fixed in the outer terminal surface of the body of rod. The rod body is driven to move through the driving device, so that the extrusion head is driven to move, and the length of the whole extrusion ejector rod is adjusted.

In the cold heading forming equipment for the spring seat, the driving device comprises an adjusting nut which is rotatably arranged on the outer end face of the fixed seat, and an external thread which is in threaded fit with the adjusting nut is formed on the side wall of the outer half part of the rod body. The adjusting nut is rotated to drive the rod body to move along the linear direction, and meanwhile, due to the limiting relation between the inner half part of the rod body and the first connecting hole, the rod body cannot deflect, and the extrusion head and the concave cavity on the mold core can be guaranteed to be corresponding all the time.

In the cold-heading former of foretell spring holder, the connecting hole three that aligns and be linked together with connecting hole two is seted up to the terminal surface of fixing base, adjusting nut's the inner has annular arch, annular arch scarf joint in connecting hole three and both normal running fit, the terminal surface of fixing base still is provided with and is used for sealing annular bellied annular apron. During installation, the annular bulge on the adjusting nut is placed in the third connecting hole, then the annular cover plate is sleeved on the adjusting nut and fixed on the end face of the fixing seat, the annular bulge can be limited in the third connecting hole, and the rotation of the adjusting nut is realized.

In the cold heading forming equipment for the spring seat, a tooth socket is formed in the outer side wall of the adjusting nut, and a pawl capable of being embedded in the tooth socket is movably arranged on the annular cover plate. Because the extrusion head can receive very big resistance when processing the blank, after the design has the pawl, can avoid extrusion head emergence after the atress to deflect and influence the machining precision.

In the cold heading forming equipment for the spring seat, the annular cover plate is radially provided with a sliding groove, a damping sheet is arranged in the sliding groove, the inner end of the pawl is arranged in the sliding groove in a sliding mode, and the outer end of the pawl can be embedded in the tooth groove. The damping fin is designed in the sliding groove, so that the friction force between the damping fin and the pawl can be increased, the pawl is guaranteed to be movable, the pawl can be kept relatively fixed with the sliding groove under the condition of not receiving external force, the adjusting nut is prevented from deflecting, and the rod body and the extrusion head are prevented from deflecting.

In the cold heading forming equipment for the spring seat, the base is provided with the mounting seat, the mold cores are all arranged on the mounting seat, the mold cores are also provided with cavity ejector rods which can be inserted into the cavities and eject blanks out, the cavity ejector rods are all fixed on the cross rod, and the base is provided with a linear driving source II connected with the cross rod. The linear driving source II moves to drive the cross rod to move, so that the concave cavity ejector rod is driven to move, and the processed blank is ejected out.

In the cold heading forming equipment for the spring seat, the cross rod is provided with a threaded hole, the inner end of the cavity ejector rod is in threaded connection with the threaded hole, and the outer end of the cavity ejector rod is inserted into the cavity. The concave cavity ejector rod is in threaded connection with the cross rod, so that the extending length of the concave cavity ejector rod can be adjusted, namely the length in the concave cavity can be adjusted, and the concave cavity ejector rod is matched with the adjustable extrusion ejector rod.

Compared with the prior art, the utility model has the advantages of it is following:

1. when the valve is used, the valve spring can be sleeved on and abutted against the boss, the damping pad is placed in the first damping hole and the second damping hole, then the valve rod is arranged in the mounting hole, and the damping pad can absorb impact and vibration generated during working, so that vibration and noise are effectively reduced;

2. because the length of extrusion ejector pin is adjustable, even there is certain precision error in the part of cold-heading equipment, perhaps the size requirement of spring holder on length is different, also can process through the length of adjusting the extrusion ejector pin.

Drawings

Fig. 1 is a schematic structural view of the present spring seat in the embodiment.

FIG. 2 is a schematic structural view of the present cold heading station in the example.

FIG. 3 is a schematic view showing the structure of the present extrusion ram in the embodiment.

Fig. 4 is a schematic structural diagram of the fixing base in the embodiment.

FIG. 5 is a schematic structural view of the cold heading forming apparatus in the embodiment.

In the figure, 1, a body; 2. a boss; 3. mounting holes; 4. a first damping hole; 5. a second damping hole; 6. a machine base; 7. a cold heading station; 8. extruding the ejector rod; 9. a first linear driving source; 10. a first driving seat; 11. a fixed seat; 12. a rod body; 13. an extrusion head; 14. a first connecting hole; 15. a second connecting hole; 16. adjusting the nut; 17. connecting a hole III; 18. an annular cover plate; 19. a tooth socket; 20. a pawl; 21. a chute; 22. a mold core; 23. a mounting seat; 24. a concave cavity ejector rod; 25. a cross bar; 26. and a second linear driving source.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the spring seat comprises a body 1, wherein one end of the body 1 extends outwards along the radial direction of the body 1 to form an annular boss 2, and one end of a valve spring can abut against the boss 2; the damping valve is characterized in that the center of the body 1 is sequentially provided with a coaxial mounting hole 3, a damping hole I4 and a damping hole II 5, the mounting hole 3 can be used for being matched with a valve rod of the valve, the aperture of the damping hole I4 is smaller than that of the damping hole II 5, and a step surface for placing a damping pad is formed between the damping hole I4 and the damping hole II 5.

As shown in fig. 2, 3 and 4, the cold heading forming equipment comprises a base 6, wherein 7 cold heading stations 7 are arranged on the base 6 at intervals, and the 7 cold heading stations 7 are a shape correcting station, a upsetting station, a step forming station, a first punching station, a second punching station, a third punching station and a shaping station in sequence; each cold heading station 7 comprises a mold core 22 and an extrusion ejector rod 8, a concave cavity matched with the extrusion ejector rod 8 is formed in the mold core 22, and the length of the extrusion ejector rod 8 is adjustable.

Specifically, the cold heading forming device further comprises a linear driving source I9, a driving seat I10 is fixed at the output end of the linear driving source I9, and the inner end of the extrusion mandril 8 is arranged on the driving seat I10. The machine base 6 is provided with a mounting base 23, the die cores 22 are all arranged on the mounting base 23, the die cores 22 are also provided with cavity ejector rods 24 which can be inserted into the cavities and eject blanks out, each cavity ejector rod 24 is fixed on the cross rod 25, and the machine base 6 is provided with a linear driving source II 26 connected with the cross rod 25. The first linear drive source 9 and the second linear drive source 26 can be air cylinders, and the blank transfer device and the pinch heads in the patent are also applicable to the application and are used for transferring the blank to the adjacent cold heading station 7. Preferably, the cross rod 25 is provided with a threaded hole, the inner end of the cavity ejector rod 24 is in threaded connection with the threaded hole, and the outer end of the cavity ejector rod 24 is inserted into the cavity.

In order to realize the adjustment, in this embodiment, the extrusion ejector rod 8 includes a fixing seat 11, the rod body 12 and the extrusion head 13, the fixing seat 11 is fixed on a first driving seat 10, a first connecting hole 14 and a second connecting hole 15 which are communicated with each other are formed in the fixing seat 11, the cross section of the first connecting hole 14 positioned at the inner end is square, the cross section of the second connecting hole 15 positioned at the outer end is circular, the cross section of the inner half part of the rod body 12 is square and is in sliding fit with the first connecting hole 14, the cross section of the outer half part of the rod body 12 is circular and is in sliding fit with the second connecting hole 15, the end surface of the fixing seat 11 is provided with a driving device capable of driving the.

Preferably, the driving device includes an adjusting nut 16 rotatably disposed at the outer end surface of the fixed seat 11, and the outer half side wall of the rod body 12 is provided with an external thread in threaded fit with the adjusting nut 16. The end face of the fixed seat 11 is provided with a third connecting hole 17 which is aligned with and communicated with the second connecting hole 15, the inner end of the adjusting nut 16 is provided with an annular bulge, the annular bulge is embedded in the third connecting hole 17 and is in running fit with the third connecting hole 17, and the end face of the fixed seat 11 is also provided with an annular cover plate 18 for sealing the annular bulge.

In order to avoid the deflection of the adjusting nut 16 during operation, the outer side wall of the adjusting nut 16 is provided with a tooth groove 19, and the annular cover plate 18 is movably provided with a pawl 20 which can be embedded in the tooth groove 19. Specifically, the annular cover plate 18 is provided with a sliding groove 21 along the radial direction, a damping sheet is arranged in the sliding groove 21, the inner end of the pawl 20 is arranged in the sliding groove 21 in a sliding manner, and the outer end of the pawl 20 can be embedded in the tooth groove 19.

The working principle of the utility model is as follows: during the use, the accessible 7 cold-heading stations will cut the cylinder steel progressively shaping that gets into above-mentioned spring holder, wherein punch a hole station one, punch a hole station two, punch a hole station three and be used for cutting mounting hole 3, shock attenuation hole 4 and shock attenuation hole 5 in proper order to the spring holder that the shaping shock attenuation performance is good.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The spring seat comprises a body (1), wherein one end of the body (1) extends outwards along the radial direction of the body (1) to form an annular boss (2), and one end of a valve spring can abut against the boss (2); the shock absorber is characterized in that a coaxial mounting hole (3), a first damping hole (4) and a second damping hole (5) are sequentially formed in the center of the body (1), the mounting hole (3) can be used for being matched with a valve rod of the air valve, the aperture of the first damping hole (4) is smaller than that of the second damping hole (5), and a step surface used for placing a shock absorbing pad is formed between the first damping hole and the second damping hole.

2. The cold heading forming device for the spring seats, as claimed in claim 1, comprises a base (6), wherein 7 cold heading stations (7) are arranged on the base (6) at intervals, and the 7 cold heading stations (7) are a sizing station, a flattening station, a step forming station, a first punching station, a second punching station, a third punching station and a shaping station in sequence; each cold heading station (7) comprises a mold core (22) and an extrusion ejector rod (8), a cavity matched with the extrusion ejector rod (8) is formed in the mold core (22), and the length of the extrusion ejector rod (8) is adjustable.

3. The cold-heading forming apparatus for a spring seat according to claim 2, further comprising a first linear driving source (9), wherein a first driving seat (10) is fixed to an output end of the first linear driving source (9), and an inner end of the extrusion ram (8) is disposed on the first driving seat (10).

4. The cold heading forming device for the spring seat according to claim 3, wherein the extrusion ram (8) comprises a fixed seat (11), a rod body (12) and an extrusion head (13), the fixed seat (11) is fixed on the driving seat I (10), a connecting hole I (14) and a connecting hole II (15) which are communicated are arranged in the fixed seat (11), the section of the connecting hole I (14) positioned at the inner end is square, the section of the connecting hole II (15) positioned at the outer end is circular, the section of the inner half part of the rod body (12) is square and is in sliding fit with the first connecting hole (14), the section of the outer half part of the rod body (12) is circular and is in sliding fit with the connecting hole II (15), the end face of the fixed seat (11) is provided with a driving device capable of driving the rod body (12) to move linearly, and the extrusion head (13) is fixed on the outer end face of the rod body (12).

5. The cold heading forming device for the spring seat, as recited in claim 4, wherein the driving means comprises an adjusting nut (16) rotatably disposed at an outer end face of the fixed seat (11), and an outer half side wall of the rod body (12) is provided with an external thread in threaded engagement with the adjusting nut (16).

6. The cold heading forming equipment for the spring seat is characterized in that the end face of the fixed seat (11) is provided with a connecting hole III (17) which is aligned with and communicated with the connecting hole II (15), the inner end of the adjusting nut (16) is provided with an annular bulge, the annular bulge is embedded in the connecting hole III (17) and is in running fit with the connecting hole III, and the end face of the fixed seat (11) is further provided with an annular cover plate (18) used for sealing the annular bulge.

7. The cold heading forming device for the spring seat according to claim 6, wherein a toothed groove (19) is formed in the outer side wall of the adjusting nut (16), and a pawl (20) capable of being embedded in the toothed groove (19) is movably arranged on the annular cover plate (18).

8. The cold heading forming device for the spring seats, according to claim 7, characterized in that the annular cover plate (18) is radially provided with a sliding groove (21), a damping sheet is arranged in the sliding groove (21), the inner end of the pawl (20) is slidably arranged in the sliding groove (21), and the outer end of the pawl (20) can be embedded in the tooth groove (19).

9. The cold heading forming device for the spring seats, according to claim 8, wherein the base (6) is provided with a mounting seat (23), the mold cores (22) are all arranged on the mounting seat (23), the mold cores (22) are further provided with cavity ejector rods (24) which can be inserted into the cavities and eject blanks out, each cavity ejector rod (24) is fixed on a cross rod (25), and the base (6) is provided with a second linear driving source (26) connected with the cross rod (25).

10. The cold heading forming device for the spring seat, according to claim 9, wherein the cross bar (25) is provided with a threaded hole, the inner end of the cavity ejector rod (24) is in threaded connection with the threaded hole, and the outer end of the cavity ejector rod (24) is inserted into the cavity.