CN215280727U

CN215280727U - Press-in and extrusion device for cold assembly of valve sleeve

Info

Publication number: CN215280727U
Application number: CN202121410282.4U
Authority: CN
Inventors: 安龙; 刘振斌; 陈勃旭; 程盛; 赵一昭
Original assignee: Xian Flight Automatic Control Research Institute of AVIC
Current assignee: Xian Flight Automatic Control Research Institute of AVIC
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-12-24
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a be used for valve barrel cold charge with extrusion device of impressing, including sending into device, extrusion device and the device of impressing, wherein: the feeding device is detachably provided with a valve sleeve, and a freezing mold is detachably arranged outside the feeding device; the extrusion device is provided with a notch, the freezing mould is placed above the notch after being frozen, and the notch is used for extruding the feeding device from the lower end of the freezing mould; the pressing device is provided with a pressing groove, and the valve body is positioned above the pressing groove; the press-in groove is used for disassembling the feeding device after the valve sleeve is installed in the valve body. The utility model discloses having reduced the cold dress time of valve barrel effectively, having promoted the cold dress efficiency of valve barrel, reinforcing valve barrel cold dress quality carries out the management and control to the risk that exists among the cold dress process, has stabilized the overall quality of servo valve.

Description

Press-in and extrusion device for cold assembly of valve sleeve

Technical Field

The utility model belongs to the technical field of engineering machine tool, concretely provides a be used for valve barrel cold charge with extrusion device of impressing.

Background

The electro-hydraulic servo control system has the advantages of high control power, high control precision, good reliability and the like, and is widely applied to occasions needing precise control.

The servo valve is a core element of the electro-hydraulic servo mechanism, and the reliability of the performance of the servo valve directly determines the reliability of the servo mechanism. The servo valve is a highly integrated hydraulic system, in order to control the volume of the servo valve, the servo valve is a porous integrated body generally, and the control and prevention of the redundant substances are key points of the control of the production process of the servo valve.

The servo valve power level generally adopts a slide valve mode, and the valve sleeve adopts a sealing ring mode to ensure the sealing performance of each cavity. The assembly process of the valve sleeve of the general servo valve is to firstly install the sealing ring into the sealing groove of the valve sleeve, adopt the temperature difference assembly method, after the low-temperature cold-assembling of the valve sleeve, then install the valve sleeve into the shell, the assembly method is easy to cause the cutting damage of the sealing ring sleeved on the valve sleeve in the actual production process and produce the surplus material, and the time is longer in the process of extruding the valve sleeve from the freezing mould and installing the valve sleeve into the valve body, which affects the freezing effect, the success rate of installing the valve sleeve once is lower and causes the reduction of the installation and adjustment efficiency of the whole servo valve, especially under the condition that the fit clearance between the valve sleeve and the valve body is smaller, the effect after the assembly is poorer.

Disclosure of Invention

The utility model aims at providing a be used for valve barrel cold charge with extrusion device of impressing for solve the success rate that current assembly methods exists and hang down, produce the problem of surplus thing easily.

In order to realize the task, the utility model discloses a following technical scheme:

a press-in and extrusion device for cold assembly of a valve sleeve comprises a feeding device, an extrusion device and a press-in device, wherein:

the feeding device is detachably provided with a valve sleeve, and a freezing mold is detachably arranged outside the feeding device;

the extrusion device is provided with a notch, the freezing mould is placed above the notch after being frozen, and the notch is used for extruding the feeding device from the lower end of the freezing mould;

the pressing device is provided with a pressing groove, and the valve body is positioned above the pressing groove; the press-in groove is used for disassembling the feeding device after the valve sleeve is installed in the valve body.

Furthermore, the inner shape of the freezing mould is matched with the shape of the valve sleeve and is used for wrapping the valve sleeve and freezing at low temperature; the freezing mould is provided with a through hole, and the feeding device is positioned in the through hole.

Further, the feeding device comprises a push rod and a guide cone, the front end of the guide cone is of a frustum-shaped structure, an annular groove is formed in the outer wall of the guide cone along the circumferential direction, the valve sleeve is sleeved in the annular groove, and the push rod is coaxially assembled at the rear end of the guide cone in a thread fit mode.

Further, the extrusion device includes first bottom plate and installs the first roof in first bottom plate top through first support, the notch is seted up on first roof, and the notch comprises one section square groove and one section semicircular groove connection, and first roof edge is worn out to the one end of square groove wherein.

Furthermore, a limiting block is arranged on the first top plate and located on the side face of the notch, a matching groove and a clamping groove are formed in the limiting block, the clamping groove is located on two sides of the square groove, and the width of the clamping groove is larger than that of the square groove; the matching groove is of an arc-shaped structure and is distributed along the edge of the semicircular groove.

Further, the width of the notch is larger than the diameter of the feeding device, but smaller than the diameter of the freezing mold.

Further, the pressing-in device comprises a second bottom plate and a second top plate installed above the second bottom plate through a second support, the pressing-in groove is formed in the second top plate, and the width of the pressing-in groove is larger than the diameter of the feeding device.

Furthermore, a pair of positioning pins is arranged on the second top plate through a fixing frame, and the pair of positioning pins are symmetrically distributed on two sides of the pressing groove; when the pressing-in process is carried out, the valve body is arranged on the second top plate, and the positioning pin penetrates through the valve body to position the valve body.

Furthermore, the fixing frame is of an L-shaped structure, one end of the positioning pin is fixed at the upper end of the fixing frame, and the positioning pin is parallel to the upper surface of the second top plate.

Compared with the prior art, the utility model has the following technical characteristics:

1. the utility model takes the temperature difference assembly process as the basis, and decomposes the devices required in the whole valve sleeve assembly process into 3 parts for matching use, thereby improving the overall assembly efficiency; the guide cone of the feeding device has the functions of guiding and positioning, and in the valve sleeve assembling process, the guide cone guides the valve sleeve to be coaxial with the inner hole of the valve body, so that the risk of cutting damage of the rubber ring is reduced, and the assembling operation is facilitated.

2. The utility model discloses having reduced the cold dress time of valve barrel effectively, having promoted the cold dress efficiency of valve barrel, reinforcing valve barrel cold dress quality carries out the management and control to the risk that exists among the cold dress process, has stabilized the overall quality of servo valve.

Drawings

FIG. 1 is a schematic view of the structure of the feeding device;

FIG. 2 is a schematic view of the extrusion apparatus;

FIG. 3 is a top view of an extrusion apparatus;

FIG. 4 is a schematic view of the extrusion apparatus with the freezing mold removed;

FIG. 5 is a side view of the press-in device;

FIG. 6 is a top view of the press-in device;

fig. 7 is a front view of the press-in device when pressing in the valve sleeve;

fig. 8 is a side view of the press-in device pressing in the valve sleeve.

The reference numbers in the figures illustrate: the device comprises a feeding device 1, a push rod 2, a valve sleeve 3, a guide cone 4, a pressing device 5, a first bottom plate 6, a first support 7, a limiting block 8, a matching groove 9, a clamping groove 10, a notch 11, a first top plate 12, a freezing mold 13, a pressing device 14, a second support 15, a fixing frame 16, a positioning pin 17, a second top plate 18, a valve body 19, a pressing groove 20 and a second bottom plate 21.

Detailed Description

At present, temperature difference assembly is generally adopted in the process of assembling the valve sleeve 3, the valve sleeve 3 is arranged in a freezing mould 13, and the valve sleeve 3 needs to be quickly taken out of the freezing mould 13; after the valve sleeve 3 is taken out, the valve sleeve 3 is exposed to the air to form heat exchange with the indoor air, the temperature of the valve sleeve 3 is rapidly increased, and therefore, the valve sleeve 3 is required to be rapidly installed into the valve body 19; in the process of installing the valve sleeve 3 into the inner hole of the valve body 19, the inner hole of the valve body 19 and the valve sleeve 3 are concentric, and the probability of cutting loss of the rubber ring is reduced.

On the basis of considering above-mentioned problem, the utility model provides a be used for valve barrel cold charge with extrusion device of impressing, including sending into device 1, extrusion device 5 and extrusion device 14, wherein:

the feeding device 1 is detachably provided with a valve sleeve 3, and the outside of the feeding device 1 is detachably provided with a freezing mold 13; wherein, the inner shape of the freezing mould 13 is matched with the shape of the valve sleeve 3 and is used for wrapping the valve sleeve 3 and freezing at low temperature; the freezing mould 13 is provided with a through hole, and the feeding device 1 is positioned in the through hole so as to be convenient for the feeding device 1 to be separated after freezing.

The extrusion device 5 is provided with a notch 11, a freezing mould 13 provided with the feeding device 1 is frozen and then placed above the notch 11, and the notch 11 is used for extruding the feeding device 1 from the lower end of the freezing mould 13;

the pressing-in device 14 is provided with a pressing-in groove 20, and the valve body 19 is positioned above the pressing-in groove 20; the press-in groove 20 is used for the disassembly of the device 1 after the frozen valve sleeve 3 has been inserted into the valve body 19.

In an embodiment of the present invention, as shown in fig. 1, the feeding device 1 includes a push rod 2 and a guide cone 4, the front end of the guide cone 4 is a frustum-shaped structure, an annular groove is circumferentially disposed on the outer wall of the guide cone 4, the valve sleeve 3 is sleeved in the annular groove, and the push rod 2 is coaxially assembled at the rear end of the guide cone 4 in a screw-thread fit manner. When the valve sleeve 3 is used, the push rod 2 is firstly screwed off from the rear end of the guide cone 4, then the valve sleeve 3 is pushed into the annular groove of the guide cone 4, and then the push rod 2 is screwed on, so that the assembly of the valve sleeve 3 is completed.

Referring to fig. 2, optionally, the extruding device 5 includes a first bottom plate 6 and a first top plate 12 installed above the first bottom plate 6 through a first bracket 7, the notch 11 is opened on the first top plate 12, the notch 11 is formed by connecting a section of square groove and a section of semicircular groove, and one end of the square groove penetrates through the edge of the first top plate 12. Furthermore, a limiting block 8 is arranged on the first top plate 12 and located on the side face of the notch 11, a matching groove 9 and a clamping groove 10 are formed in the limiting block 8, the clamping groove 10 is located on two sides of the square groove, and the width of the clamping groove 10 is larger than that of the square groove; the matching groove 9 is of an arc-shaped structure and is arranged along the edge of the semicircular groove.

Referring to fig. 3, the width of the slot 11 is larger than the diameter of the feeding device 1, but smaller than the diameter of the freezing mold 13. The above-mentioned notch 11 portion of the extrusion device 5 is designed so that the freezing mold 13 can be easily taken off from the feeding device 1; in the taking-off process, the freezing mold 13 is caught above the notch 11, and the feeding device 1 is lifted off from the lower end of the freezing mold 13.

Referring to fig. 5 to 7, the pressing device 14 includes a second bottom plate 21 and a second top plate 18 mounted above the second bottom plate 21 through a second bracket 15, the pressing groove 20 is disposed on the second top plate 18, and the structural form of the pressing groove 20 is the same as or similar to the notch 11, for example, it may also be formed by combining a section of square groove and a section of semicircular groove; the width of the press-in groove 20 is larger than the diameter of the feeder 1.

In order to facilitate the positioning of the valve body 19 during the pressing process, a pair of positioning pins 17 are arranged on the second top plate 18 through the fixing frame 16, and the pair of positioning pins 17 are symmetrically distributed on two sides of the pressing groove 20. When the press-fitting process is performed, the valve body 19 is placed on the second top plate 18, and the positioning pin 17 is passed through the valve body 19 to position the valve body 19.

Referring to fig. 5, the fixing frame 16 is an L-shaped structure, and one end of a positioning pin 17 is fixed to the upper end of the fixing frame 16, and the positioning pin 17 is parallel to the upper surface of the second top plate 18.

Based on the device, the utility model discloses carry out the specific process of valve barrel cold packing as follows:

step 1, arranging a valve sleeve 3 between a push rod 2 and a guide cone 4 of a feeding device 1, arranging the feeding device 1 in a freezing mould 13, and freezing the feeding device 1 and the freezing mould 13 together at a low temperature to facilitate subsequent operation.

Step 2, after freezing, placing a freezing mould 13 on the extrusion device 5, enabling a through hole of the freezing mould 13 provided with the feeding device 1 to be positioned above the notch 11, enabling the freezing mould 13 to be attached to a semicircular groove in the notch 11, knocking the upper end of the freezing mould 13 from top to bottom by using a tool, and pushing the feeding device 1 out of the notch 11 because the width of the notch 11 is larger than the diameter of the feeding device 1; in order to smoothly take out the feeding device 1, the length of the first support 7 should be larger than that of the feeding device 1.

Step 3, placing the valve body 19 on the second top plate 18 of the press-in device 14, enabling the positioning pin 17 to penetrate through a positioning hole in the valve body 19, then placing the detached feeding device 1 above a valve sleeve 3 hole in the valve body 19, inserting the guide cone 4 at the front end of the feeding device into the valve sleeve 3 hole, and then quickly pressing the feeding device 1 into the valve body 19 through knocking; since the valve sleeve 3 is stuck on the feeder 1, the feeder 1 will carry the valve sleeve 3 into the bore of the valve sleeve 3.

And 4, unscrewing the push rod 2 from the guide cone 4, taking out the push rod 2 from the upper part of the valve body 19, and taking out the guide cone 4 from the lower part of the pressing groove 20, so that the temperature difference assembly of the valve sleeve 3 is completed.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the preferred embodiments, the scope of the present invention is not limited thereto, and any person skilled in the art can modify the detailed embodiments of the present invention or make equivalent substitutions for some technical features within the technical scope of the present invention disclosed by the present invention without departing from the spirit of the technical solution of the present invention, and the modifications or substitutions should be covered within the technical scope of the present invention claimed.

Claims

1. A press-in and extrusion device for cold fitting of valve sleeves, comprising a feeding device (1), an extrusion device (5) and a press-in device (14), wherein:

the feeding device (1) is detachably provided with a valve sleeve (3), and a freezing mould (13) is detachably arranged outside the feeding device (1);

the extrusion device (5) is provided with a notch (11), a freezing mould (13) is frozen and then placed above the notch (11), and the notch (11) is used for extruding the feeding device (1) from the lower end of the freezing mould (13);

the pressing-in device (14) is provided with a pressing groove (20), and the valve body (19) is positioned above the pressing groove (20); the press-in groove (20) is used for disassembling the valve sleeve (3) after the valve body (19) is installed in the device (1).

2. The press-in and extrusion device for valve sleeve cold fitting according to claim 1, wherein the freezing mold (13) has an internal shape adapted to the shape of the valve sleeve (3) for wrapping the valve sleeve (3) and performing low-temperature freezing; the freezing mould (13) is provided with a through hole, and the feeding device (1) is positioned in the through hole.

3. The press-in and extrusion device for cold assembly of the valve sleeve as claimed in claim 1, wherein the feeding device (1) comprises a push rod (2) and a guide cone (4), the front end of the guide cone (4) is of a frustum-shaped structure, an annular groove is formed in the outer wall of the guide cone (4) along the circumferential direction, the valve sleeve (3) is sleeved in the annular groove, and the push rod (2) is coaxially assembled at the rear end of the guide cone (4) in a thread fit manner.

4. The press-in and press-out device for cold fitting of a valve sleeve as claimed in claim 1, wherein the press-in and press-out device (5) comprises a first bottom plate (6) and a first top plate (12) mounted above the first bottom plate (6) through a first bracket (7), the notch (11) is formed in the first top plate (12), the notch (11) is formed by connecting a section of square groove and a section of semicircular groove, and one end of the square groove penetrates through the edge of the first top plate (12).

5. The press-in and extrusion device for cold fitting of the valve sleeve according to claim 4, wherein a limit block (8) is arranged on the first top plate (12) and located on the side of the notch (11), a matching groove (9) and a clamping groove (10) are formed in the limit block (8), wherein the clamping groove (10) is located on two sides of the square groove, and the width of the clamping groove (10) is greater than that of the square groove; the matching groove (9) is of an arc-shaped structure and is distributed along the edge of the semicircular groove.

6. Press-in and extrusion device for cold fitting of valve sleeves, as claimed in claim 1, characterised in that the width of the slot (11) is greater than the diameter of the feed device (1) but smaller than the diameter of the freezing mould (13).

7. Press-in and extrusion device for cold fitting of a valve sleeve according to claim 1, characterised in that the press-in device (14) comprises a second bottom plate (21) and a second top plate (18) mounted above the second bottom plate (21) by means of a second bracket (15), the press-in groove (20) being provided in the second top plate (18), the width of the press-in groove (20) being greater than the diameter of the feed-in device (1).

8. The press-in and extrusion device for cold fitting of a valve sleeve as claimed in claim 7, wherein the second top plate (18) is provided with a pair of positioning pins (17) through a fixing frame (16), and the pair of positioning pins (17) are symmetrically distributed on two sides of the press-in groove (20); when the pressing-in process is carried out, the valve body (19) is placed on the second top plate (18), and the positioning pin (17) penetrates through the valve body (19) to position the valve body (19).

9. The press-in and extrusion device for cold fitting of a valve sleeve as claimed in claim 8, wherein said holder (16) has an L-shaped configuration, and one end of the positioning pin (17) is fixed to the upper end of the holder (16), and the positioning pin (17) is parallel to the upper surface of the second top plate (18).