CN219366465U

CN219366465U - Back pressure head hydro-cylinder that back group machine was used

Info

Publication number: CN219366465U
Application number: CN202320514143.9U
Authority: CN
Inventors: 苏可滢; 苏炜
Original assignee: Nan'an Quanxin Hydraulic Machinery Co ltd
Current assignee: Nan'an Quanxin Hydraulic Machinery Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-18
Anticipated expiration: 2033-03-16

Abstract

The utility model provides a back pressure head hydro-cylinder that back group machine was used, including the cylinder body, piston assembly and end cover, have the cavity in the cylinder body, the cylinder body left side is equipped with the through-hole with the cavity intercommunication, cavity one end runs through to the cylinder body right side for put into the cylinder body with the piston assembly, the piston assembly includes piston shaft and piston head, piston shaft one end passes the through-hole and movably sets up in the cavity, the piston head is connected in the other end that the piston shaft is located the cavity, the end cover is installed on the right side of cylinder body, connect cylinder body and end cover, guarantee the leakproofness in the cylinder body, the oil inlet channel of big-end-out's loudspeaker form setting is seted up and is linked together with the cavity, the slope sets up the oil inlet space that improves hydraulic oil, produced thrust when increasing hydraulic oil advances.

Description

Back pressure head hydro-cylinder that back group machine was used

Technical Field

The disclosure relates to the technical field of hydraulic cylinders, in particular to a rear pressure head cylinder for a rear upper machine.

Background

The back upper machine is used for bonding the back upper of the shoe in the shoe making industry, the back pressure head oil cylinder is an important execution part of the back upper machine, and in the use process, parameters such as the flow rate, the pressure and the like of hydraulic oil of the back pressure head oil cylinder can influence the overall execution efficiency of the back pressure head oil cylinder, so that the production efficiency and the yield of the back upper machine are influenced. At present, in order to improve parameters such as the flow rate and the pressure of hydraulic oil in a rear pressure head oil cylinder, methods such as increasing an oil inlet channel of the oil cylinder, increasing the size of the oil cylinder, improving the power of a hydraulic pump and the like are generally adopted, and the methods also lead to the improvement of the overall cost of the rear upper machine and the increase of the energy consumption, and increase the burden of shoemaking enterprises.

Disclosure of Invention

The utility model aims to solve the problems and provide a rear pressure head oil cylinder for a rear upper machine.

The technical scheme of the present disclosure is realized as follows:

the disclosure provides a rear pressure head cylinder for a rear upper machine, which comprises a cylinder body, a piston assembly and an end cover;

the cylinder body is internally provided with a cavity, the cavity extends along the axial direction of the cylinder body and penetrates through one end part of the cylinder body to form a port, and the other end part of the cylinder body is provided with a through hole communicated with the cavity;

the piston assembly comprises a piston shaft and a piston head, one end of the piston shaft penetrates through the through hole and is movably arranged in the cavity, and the piston head is connected to one end of the piston shaft positioned in the cavity;

the end cover is arranged on the port and is provided with an oil inlet channel which is communicated with the cavity; the oil inlet channel is in a horn shape with a large inner part and a small outer part.

In one embodiment, the end cap has a boss with an outer peripheral surface that conforms to the inner cavity wall of the cavity.

In one embodiment, the end surface of the end cover positioned in the cavity is a concave cambered surface;

one end of the piston head far away from the piston shaft is an outwards convex cambered surface;

when the piston assembly moves, the convex cambered surface and the concave cambered surface can be contacted or separated in a fitting way.

In one embodiment, the piston head is provided with a first concave ring portion and a second concave ring portion on the outer peripheral surface thereof;

the first concave ring part and the inner cavity wall of the cavity form a first piston seal groove and are provided with a first seal ring;

the second concave ring part and the inner cavity wall of the cavity form a second piston seal groove and are provided with a second seal ring

In one embodiment, one side of the cylinder body is provided with an exhaust hole, and the exhaust hole is positioned above the through hole.

In one embodiment, the angle of inclination of the end face of the oil inlet channel is 5 ° -40 °.

In one embodiment, the protruding part is provided with an annular groove on the outer peripheral surface of the cavity;

the annular groove and the inner cavity wall of the cavity form an end cover sealing groove and an end cover sealing ring is arranged.

In one embodiment, the axial width of the first female ring portion is greater than the axial width of the second female ring portion.

In one embodiment, the cylinder body is provided with a flange on the outer side, the surface of the flange is provided with a plurality of counter bores, and the counter bores are uniformly distributed along the circumferential direction of the flange.

In one embodiment, the end of the piston head adjacent to the convex curved surface is provided with a guide portion.

The advantages or beneficial effects in the technical scheme at least comprise:

the back pressure head hydro-cylinder of this disclosure comprises cylinder body, piston subassembly and end cover, has the cavity in the cylinder body, the back pressure head hydro-cylinder of this disclosure has seted up the income oil channel that is big outside in the loudspeaker form setting on the end cover, increases the oil feed space of hydraulic oil, and after hydraulic oil gets into the cylinder body from the income oil channel of loudspeaker form, can be loudspeaker form along going into the oil channel and spray into the cavity in the cylinder body, makes the piston head of piston subassembly is reached to hydraulic oil quick and relatively even, improves the interior hydraulic oil velocity of flow of back pressure head hydro-cylinder, and makes the pressurized of piston head more even.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 illustrates a schematic view of a partial cross-sectional structure of a cylinder according to an embodiment of the present disclosure;

FIG. 2 illustrates a first perspective view of a cylinder according to an embodiment of the present disclosure;

FIG. 3 illustrates a second perspective view of a cylinder according to an embodiment of the present disclosure;

FIG. 4 illustrates a third perspective view of a cylinder according to an embodiment of the present disclosure;

FIG. 5 illustrates a schematic cross-sectional structural view of a cylinder of an embodiment of the present disclosure;

FIG. 6 shows a schematic cross-sectional structural view of another implementation of a cylinder of an embodiment of the present disclosure;

FIG. 7 illustrates a schematic perspective view of an end cap of an embodiment of the present disclosure;

FIG. 8 illustrates a schematic cross-sectional structural view of an end cap of an embodiment of the present disclosure;

FIG. 9 illustrates a schematic perspective view of a piston assembly of an embodiment of the present disclosure;

FIG. 10 illustrates a schematic perspective view of another implementation of a piston assembly of an embodiment of the present disclosure;

reference numerals: 100. a cylinder; 101. a cavity; 102. a flange; 103. a through hole; 104. an exhaust hole; 105. countersink; 106. bolt holes; 200. a piston assembly; 201. a piston shaft; 202. a piston head; 203. a first concave ring portion; 204. a second concave ring portion; 205. a guide part; 206. a convex cambered surface; 207. a first seal ring; 208. a second seal ring; 300. an end cap; 301. a boss; 302. an annular groove; 303. an oil inlet channel; 304. a connection hole; 305. a concave cambered surface; 306. and (5) an end cover sealing ring.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been shown in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that references to "a", "an" and "the" in this disclosure are intended to be illustrative rather than limiting, those skilled in the art will understand that "one or more" is to be understood as "one or more" unless the context clearly dictates otherwise.

Referring to fig. 1-4, a rear ram cylinder for a counter comprises a cylinder block 100, a piston assembly 200, and an end cap 300.

The cylinder 100 is provided with a cavity 101, the cavity 101 extends along the axial direction of the cylinder 100 and penetrates through one end of the cylinder 100 to form a port, the other end of the cylinder 100 is provided with a through hole 103 communicated with the cavity 101, and the piston assembly 200 is placed in the cylinder 100 under the limitation of the prior art, so that the port capable of being placed needs to be formed.

The piston assembly 200 comprises a piston shaft 201 and a piston head 202, one end of the piston shaft 201 passes through the through hole 103 and is movably arranged in the cavity 101, one end of the piston shaft 201 is positioned outside the cylinder body 100, one end of the piston shaft 201 is positioned in the cylinder body 100, the piston head 202 is connected with the other end of the piston shaft 201 positioned in the cavity 101, the piston head 202 is always positioned in the cavity 101, and one end of the piston head 202 away from the piston shaft 201 is connected with an outer convex cambered surface 206.

The end cover 300 is arranged on the port, the end cover 300 is provided with an oil inlet channel 303, and the oil inlet channel 303 is communicated with the cavity 101; the oil inlet channel 303 is in a horn shape with a large inner side and a small outer side, one end close to the cavity 101 is an inner end, one end far away from the cavity 101 is an outer end, the inclination angle of the end face of the oil inlet channel 303 can be selected in the range of 5-40 degrees according to actual needs, and the installation of the end cover 300 enables the cavity 101 to be closed.

The end cover 300 is provided with a protruding part 301, the outer peripheral surface of the protruding part 301 is attached to the inner cavity wall of the cavity 101, the end surface of the end cover 300 positioned in the cavity 101 is provided with a concave cambered surface 305, and the end surface of the piston head 202 far away from the piston shaft 201 is provided with a convex cambered surface 206.

As the piston assembly 200 moves, the male camber 206 may be brought into abutting contact with or separated from the female camber 305.

Based on the above structure, the end cap 300 has a connection cavity for connecting a hydraulic oil pipe, when the connection cavity is connected with the hydraulic oil pipe, because the oil inlet channel 303 is of an inclined design with a large inside and a small outside, hydraulic oil can more smoothly enter the cavity 101 through the oil inlet channel 303, and because the protruding part 301 and the concave cambered surface 305 are in a fitting state when the piston shaft 201 is in a contracted state, when the hydraulic oil enters the cavity 101, the hydraulic oil firstly contacts with the protruding part 301, because the protruding part 301 is of an arc-shaped structural design, the contact area of the hydraulic oil and the piston head 202 is increased, so that the stress of the piston head 202 is increased, and meanwhile, because one end of the oil inlet channel 303 close to the cavity 101 is larger, more hydraulic oil can be accommodated between the piston head 202 and the oil inlet channel 303, and by increasing the pressure of the hydraulic oil, the driving capability of the hydraulic oil is improved, and the moving precision of the piston assembly 200 is also improved.

In one embodiment, referring to fig. 1, 9 and 10, the outer peripheral surface of the piston head 202 is provided with a first concave ring portion 203 and a second concave ring portion 204, the first concave ring portion 203 and the inner cavity wall of the cavity 101 form a first piston seal groove and are provided with a first seal ring 207, and the second concave ring portion 204 and the inner cavity wall of the cavity 101 form a second piston seal groove and are provided with a second seal ring 208. The axial width of the first recessed ring portion 203 is greater than the axial width of the second recessed ring portion 204.

The first sealing ring 207 and the second sealing ring 208 are used for isolating two chambers of the cylinder body 100 and are main sealing elements in the cylinder body 100; since the sizes of the first sealing ring 207 and the second sealing ring 208 are different, the axial widths of the first concave ring portion 203 and the second concave ring portion 204 are different according to actual needs, so as to ensure tightness in the cylinder 100.

In one embodiment, referring to fig. 1 and 4, an exhaust hole 104 is formed at one side of the cylinder 100, and the exhaust hole 104 is located above the through hole 103; when the hydraulic system stops moving in the installation process or for a long time, the cavity 101 can be permeated with air, the mixed air can make the cylinder work unstably, abnormal phenomena such as vibration, noise, heating, starting front flushing, low-speed crawling and the like are generated, and therefore the exhaust hole 104 mainly enables the cylinder to work normally, and pressure balance in the cylinder body 100 is kept.

In one embodiment, referring to fig. 7 and 8, an annular groove 302 is formed on the outer peripheral surface of the protrusion 301 located in the cavity 101, and the annular groove 302 and the inner cavity wall of the cavity 101 form an end cover seal groove and are provided with an end cover seal ring 306; the end cover sealing ring 306 is optionally a dust ring, and is used for sealing the end cover 300 and the inner wall of the cavity 101, so as to prevent hydraulic oil from leaking out from the gap between the end cover 300 and the inner wall of the cavity 101.

In one embodiment, referring to fig. 3 and 6, a flange 102 is arranged on the outer side of the cylinder body 100, a plurality of counter bores 105 are formed on the surface of the flange 102, and the counter bores 105 are uniformly distributed along the circumferential direction of the flange 102; the flange 102 allows the cylinder 100 to be bolted to other components.

In one embodiment, referring to fig. 9 and 10, the end of the piston head 202 near the convex cambered surface 206 is provided with a guide portion 205, and the compression area of the piston head 202 is increased by the guide of the guide portion 205.

In one embodiment, referring to fig. 5, a plurality of bolt holes 106 are formed in the right end face of the cylinder body 100 and are uniformly distributed along the circumferential direction of the cylinder body 100, and connecting holes 304 with the same number as the bolt holes 106 are formed in the end face of the end cover 300, so that the cylinder body 100 can be connected with the end cover 300 in a bolt connection manner, and the tightness of the cylinder during operation is ensured.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. A back pressure head hydro-cylinder that back group machine was used, its characterized in that: comprises a cylinder body (100), a piston assembly (200) and an end cover (300);

a cavity (101) is arranged in the cylinder body (100), the cavity (101) extends along the axial direction of the cylinder body (100) and penetrates through one end part of the cylinder body (100) to form a port, and the other end part of the cylinder body (100) is provided with a through hole (103) communicated with the cavity (101);

the piston assembly (200) comprises a piston shaft (201) and a piston head (202), one end of the piston shaft (201) penetrates through the through hole (103) and is movably arranged in the cavity (101), and the piston head (202) is connected to one end of the piston shaft (201) located in the cavity (101);

the end cover (300) is arranged on the port, the end cover (300) is provided with an oil inlet channel (303), and the oil inlet channel (303) is communicated with the cavity (101); the oil inlet channel (303) is arranged in a horn shape with a large inner part and a small outer part.

2. The rear ram cylinder for a counter machine according to claim 1, wherein: the end cover (300) is provided with a protruding part (301), and the outer peripheral surface of the protruding part (301) is attached to the inner cavity wall of the cavity (101).

3. The rear ram cylinder for a counter machine according to claim 1, wherein: the end cover (300) is positioned in the cavity (101) and has an inward concave cambered surface (305);

one end of the piston head (202) far away from the piston shaft (201) presents an outwards convex cambered surface (206);

when the piston assembly (200) moves, the convex cambered surface (206) can be in contact with or separated from the concave cambered surface (305).

4. The rear ram cylinder for a counter machine according to claim 1, wherein: the outer peripheral surface of the piston head (202) is provided with a first concave ring part (203) and a second concave ring part (204);

the first concave ring part (203) and the inner cavity wall of the cavity (101) form a first piston seal groove and are provided with a first seal ring (207);

the second concave ring part (204) and the inner cavity wall of the cavity (101) form a second piston seal groove and a second seal ring (208) is arranged.

5. The rear ram cylinder for a counter machine according to claim 1, wherein: an exhaust hole (104) is formed in one side of the cylinder body (100), and the exhaust hole (104) is located above the through hole (103).

6. The rear ram cylinder for a counter machine according to claim 1, wherein: the inclination angle of the end face of the oil inlet channel (303) is 5-40 degrees.

7. The rear ram cylinder for a counter machine according to claim 2, wherein: an annular groove (302) is formed in the peripheral surface of the protruding part (301) positioned in the cavity (101);

the annular groove (302) and the inner cavity wall of the cavity (101) form an end cover sealing groove and an end cover sealing ring (306) is arranged.

8. The rear ram cylinder for a counter as defined in claim 4, wherein: the axial width of the first concave ring part (203) is larger than the axial width of the second concave ring part (204).

9. The rear ram cylinder for a counter machine according to claim 1, wherein: the cylinder body (100) outside is equipped with flange (102), a plurality of counter bores (105) have been seted up on flange (102) surface, counter bores (105) are followed the circumferencial direction evenly distributed of flange (102).

10. A rear ram cylinder for a counter machine as claimed in claim 3, wherein: one end of the piston head (202) close to the convex cambered surface (206) is provided with a guide part (205).