CN215941229U

CN215941229U - Punch capable of self-adapting to inner diameter size of charging barrel

Info

Publication number: CN215941229U
Application number: CN202023181925.0U
Authority: CN
Inventors: 张晓�; 陈阳
Original assignee: Taicang Haijia Vehicle Fittings Co ltd
Current assignee: Taicang Haijia Vehicle Fittings Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2022-03-04
Anticipated expiration: 2030-12-26

Abstract

The utility model discloses a punch head capable of adapting to the inner diameter size of a charging barrel, which comprises a piston, a retaining ring, a connecting mechanism and a driving rod, wherein the piston is arranged in the charging barrel in a sliding manner, the piston is connected with the driving rod through the connecting mechanism, a mounting groove is annularly formed in the side wall of the piston, the retaining ring is movably arranged in the mounting groove, and a plurality of liquid through holes communicated with the mounting groove are circumferentially formed in the end surface of the piston. The piston is sleeved with the retaining ring, and the retaining ring is tightly attached to the inner wall of the charging barrel by using the pressure of the aluminum liquid, so that the generation of aluminum skin is prevented. And the toughness of the retaining ring is utilized, so that the retaining ring can be ensured to be tightly attached to the inner wall of the charging barrel through the pressure of the aluminum liquid even if the surface is worn after long-term use. The piston is connected with the driving rod in a floating mode through a connecting piece, and self-adaptive adjustment of the punch is achieved.

Description

Punch capable of self-adapting to inner diameter size of charging barrel

Technical Field

The utility model relates to the field of die casting, in particular to a punch capable of self-adapting to the inner diameter size of a charging barrel.

Background

One of the defects in the aluminum alloy die casting process is that the aluminum skin is embedded, namely, when the aluminum liquid contacts objects such as a charging barrel, a die and the like, the aluminum liquid is solidified to form a layer of thin sheet due to chilling, one part of the thin sheet can be filled into a die cavity along with the aluminum liquid, one part of the thin sheet is embedded into a gap between a punch and the charging barrel, and the thin sheet enters the die cavity when being injected next time, and in both cases, the aluminum skin is finally formed in a product. Because the aluminum skin is solidified into a solid firstly, the aluminum skin can not be well combined with other areas of the product when being solidified, and finally, the defects are generated.

SUMMERY OF THE UTILITY MODEL

Aiming at overcoming the defects in the prior art, the utility model mainly aims to overcome the defects in the prior art, and discloses a punch head adaptive to the inner diameter size of a charging barrel, which comprises a piston, a retaining ring, a connecting mechanism and a driving rod, wherein the piston is arranged in the charging barrel in a sliding manner, the piston is connected with the driving rod through the connecting mechanism, the side wall of the piston is annularly provided with a mounting groove, the retaining ring is movably arranged in the mounting groove, and the end surface of the piston is circumferentially provided with a plurality of liquid through holes communicated with the mounting groove.

Furthermore, a fracture is arranged on the side wall of the retaining ring, and the fracture is of a tooth-shaped structure.

Further, the retaining ring is made of a copper bar.

Further, coupling mechanism includes connecting piece and fixed cover, the connecting piece sets up two, splices into the loop configuration, the both ends axial of connecting piece inwards extends and sets up spacing portion, the one end axial of piston outwards sets up first card reason, the one end axial of actuating lever outwards sets up the second card reason, the second card reason is folded and is established on the first card reason, utilizes the connecting piece is fixed, fixed cover is located the connecting piece is outer in order to fix the connecting piece.

Further, the diameter of the first clamping edge is different from the diameter of the second clamping edge in size.

Further, the diameter of the second clamping edge is smaller than that of the first clamping edge.

Further, a magnet is arranged at the end part of the fixed sleeve so as to be fixed on the piston in an adsorption mode.

Further, the fixing sleeve is in threaded fit with the connecting piece.

The utility model has the following beneficial effects:

the piston is sleeved with the retaining ring, and the retaining ring is tightly attached to the inner wall of the charging barrel by using the pressure of the aluminum liquid, so that the generation of aluminum skin is prevented. And the toughness of the retaining ring is utilized, so that the retaining ring can be ensured to be tightly attached to the inner wall of the charging barrel through the pressure of the aluminum liquid even if the surface is worn after long-term use. The piston is connected with the driving rod in a floating mode through a connecting piece, and self-adaptive adjustment of the punch is achieved.

Drawings

FIG. 1 is a schematic structural view of a punch head adaptive to the inner diameter dimension of a charging barrel according to the utility model;

FIG. 2 is a top view of a punch of the present invention adapted to the inner diameter dimension of a barrel;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of a connector;

FIG. 5 is a schematic view of a buckle;

the reference numbers are as follows:

1. the piston, 2, the retaining ring, 3, the connecting mechanism, 4, the drive rod, 11, the mounting groove, 12, the liquid through hole, 13, the first clamping edge, 21, the fracture, 31, the connecting piece, 32, the fixed sleeve, 41, the second clamping edge, 311 and the limiting part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

A punch head adaptive to the inner diameter size of a charging barrel is shown in figures 1-4 and comprises a piston 1, a retaining ring 2, a connecting mechanism 3 and a driving rod 4, wherein the piston 1 is arranged in the charging barrel in a sliding mode, the piston 1 is connected with the driving rod 4 through the connecting mechanism 3, a mounting groove 11 is annularly arranged on the side wall of the piston 1, the retaining ring 2 is movably arranged in the mounting groove 11, and a plurality of liquid through holes 12 communicated with the mounting groove 11 are circumferentially arranged on the end face of the piston 1. When the driving rod 4 pushes the piston 1 to inject the aluminum in the charging barrel into the die, because the front section has certain pressure, the aluminum liquid is pressed into the mounting groove 11 through the liquid through hole 12, and then the retaining ring 2 is axially expanded, and further the aluminum liquid is tightly attached to the inner wall of the charging barrel, so that the aluminum skin is prevented from being generated due to the gap between the piston 2 and the side wall.

In one embodiment, as shown in fig. 1-5, the sidewall of the retaining ring 2 is provided with a break 21, and the break 21 may be a tooth-like structure.

In an embodiment, as shown in fig. 1 to 4, the connecting mechanism 3 includes a connecting member 31 and a fixing sleeve 32, the connecting member 31 includes two connecting members 31, which are spliced to form an annular structure, two ends of the connecting member 31 axially extend inward to form a limiting portion 311, one end of the piston 1 axially extends outward to form a first locking edge 13, one end of the driving rod 4 axially extends outward to form a second locking edge 41, the second locking edge 41 is stacked on the first locking edge 13, and a mounting area for mounting the first locking edge 13 and the second locking edge 41 is formed between the two limiting portions 311. The connecting piece 31 is mounted on the first clamping edge 13 and the second clamping edge 41, and the first clamping edge 13 and the second clamping edge 41 are limited to move axially relative to each other by the limiting part 311; after the installation, the fixing sleeve 32 is sleeved outside the connecting piece 31 to fix the two connecting pieces 31 together quickly. Of course, one end of the two connecting members 31 is hinged, and the other end is fixedly connected by a screw.

In one embodiment, as shown in FIGS. 1-4, the diameter of the first lip 13 is different than the diameter of the second lip 41. I.e. the first or second catch edge 13, 41, has a clearance with the inner wall of the connecting piece 31, so that the piston 1 and the drive rod 4 can move axially relative to each other. With the above structure, even if the drive rod 4 and the piston 1 are not on the same axis, the self-adaptive adjustment can be realized. Preferably, the diameter of the second flange 41 is smaller than the diameter of the first flange 13.

In the above embodiment, as shown in fig. 1 to 4, the end of the fixing sleeve 32 is provided with a magnet to be fixed to the piston 1 by attraction. The fixing sleeve 32 can be quickly attached and detached by the adsorbability of the magnet 9 itself. Of course, other connection modes are also possible, for example, continuous threads are provided on the outer walls of the two connecting pieces 31, and matching threads are provided on the inner wall of the fixing sleeve 32, so that after the two connecting pieces 31 are spliced, the fixing sleeve 32 is rotated to be in threaded matching with the connecting pieces 31, and the quick connection can also be realized.

When the aluminum injection mold is used, as shown in figures 1-4, the piston 1 is arranged in the charging barrel in a sliding mode, aluminum liquid is injected into the charging barrel, the piston 1 is driven to move axially through the driving rod 4, the aluminum liquid is injected into the mold, in the process, the aluminum liquid enters a cavity formed between the mounting groove 11 and the retaining ring 2 through the liquid through hole, due to the fact that the aluminum liquid has pressure, the retaining ring 2 is axially outwards supported through the pressure and attached to the inner wall of the charging barrel, further, a gap between the piston 1 and the inner wall of the charging barrel is compensated, and generation of aluminum skin is avoided. Meanwhile, the relative position between the driving rod 4 and the piston 1 is self-adaptively adjusted through a connecting piece, so that the piston 1 can move in the charging barrel more smoothly. In addition, even if the retaining ring 2 is worn after long-term use, the retaining ring 2 can still be ensured to be tightly attached to the inner wall of the charging barrel through aluminum liquid.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the utility model; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the utility model.

Claims

1. The utility model provides a drift of self-adaptation feed cylinder internal diameter size, its characterized in that, includes piston, buckle, coupling mechanism and actuating lever, the piston slides and sets up in the feed cylinder, the piston passes through coupling mechanism with the actuating lever is connected, the mounting groove is established to the ring on the piston lateral wall, the buckle activity sets up in the mounting groove, piston terminal surface circumference set up a plurality of with the logical liquid hole of mounting groove intercommunication.

2. The punch as claimed in claim 1, wherein the retaining ring has a cut-out in a side wall thereof, the cut-out having a tooth-like structure.

3. A punch as claimed in claim 1, wherein the retaining ring is made of copper.

4. The punch head according to claim 1, wherein the connecting mechanism comprises two connecting members and a fixing sleeve, the two connecting members are spliced to form an annular structure, two ends of each connecting member axially extend inwards to form a limiting portion, one end of each piston axially extends outwards to form a first clamping edge, one end of each driving rod axially extends outwards to form a second clamping edge, the second clamping edges are overlapped on the first clamping edges and fixed by the connecting members, and the fixing sleeve is sleeved outside the connecting members to fix the connecting members.

5. A punch head capable of adapting to the inner diameter of a barrel according to claim 4, wherein the diameter of the first clamping edge is different from the diameter of the second clamping edge.

6. A punch head capable of adapting to the inner diameter of a barrel according to claim 5, wherein the diameter of the second clamping edge is smaller than that of the first clamping edge.

7. The punch as claimed in claim 4, wherein a magnet is disposed at an end of the fixing sleeve to be fixed to the piston by suction.

8. A punch as claimed in claim 4, wherein said retaining sleeve is threadably engaged with said connector.