CN216325021U

CN216325021U - Inlay needle structure

Info

Publication number: CN216325021U
Application number: CN202122404773.4U
Authority: CN
Inventors: 杨东建; 徐旭东
Original assignee: Ningbo Hesheng Aluminum Bottle Technology Co ltd
Current assignee: Ningbo Hesheng Aluminum Bottle Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-19
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to an insert pin structure, which comprises an insert pin head part and an insert pin tail part and is characterized in that: the head of the insert needle comprises a first end part and a second end part which are sequentially connected from front to back, the outer diameter of the first end part is smaller than that of the second end part, correspondingly, the tail of the insert needle is a pipe body with two open ends, the first end part of the head of the insert needle penetrates through the first open end of the tail of the insert needle to be exposed out of the tail of the insert needle and is limited in the tail of the insert needle by means of the second end part, a connecting body used for fixing the second end part is further arranged in the tail of the insert needle, and a first fastening piece capable of fastening the connecting body and the second end part of the head of the insert needle is further arranged in the second open end of the tail of the insert needle. The setting can be with the great second tip fastening of external diameter with spacing holistic insert the needle head in the connector and the first fastener of inlaying the needle afterbody, only need open when tearing open and changing can, can change fast.

Description

Inlay needle structure

Technical Field

The utility model relates to the technical field of die-casting molds, in particular to an insert pin structure.

Background

In a die-casting die, an insert pin is used as an important positioning, connecting and guiding component, the performance of the insert pin cannot be ignored, the existing insert pin is mostly of an integrated structure, although the manufacture is simple, the insert pin is not beneficial to quick replacement, the existing insert pin aiming at large and long size is manufactured in a segmented mode, the head part is high in hardness and high in cost, the tail hanging table part is low in hardness, toughness and low in cost, the two parts are connected by friction welding, even though the experiment proves that the firmness degree of a friction welding seam exceeds that of a body, namely the friction welding seam cannot be broken, when the head part needs to be replaced, the old insert pin is firstly cut off, the head part and the tail part which are manufactured in advance are then friction welded together, and the problem of inconvenience in replacement still exists; in addition, in the die-casting process, if the wall thickness of some parts of the part to be formed, which are located around the inclined deep hole of the insert pin, is thick, the cooling speed is slow, and loose holes, air holes and shrinkage holes are easily formed at the part after cooling, so that the air tightness is not qualified, and further improvement is needed for the purpose.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an insert pin structure that can be easily replaced.

The second technical problem to be solved by the present invention is to provide an insert pin structure capable of preventing the occurrence of loosening, air holes, shrinkage cavities and the like of the part to be formed due to insufficient cooling, in view of the above-mentioned current state of the art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the insert pin structure comprises an insert pin head part and an insert pin tail part, and is characterized in that: the insert pin comprises an insert pin head and a second insert pin head, wherein the insert pin head comprises a first end part and a second end part which are sequentially connected from front to back, the outer diameter of the first end part is smaller than that of the second end part, correspondingly, the insert pin tail is a pipe body with two open ends, the first end part of the insert pin head penetrates through the first open end of the insert pin tail to be exposed out of the insert pin tail, and is limited in the insert pin tail by means of the second end part, a connecting body used for fixing the second end part is further arranged in the insert pin tail, and a first fastening piece capable of fastening the connecting body and the second end part of the insert pin head is further arranged in the second open end of the insert pin tail.

In order to better increase the connection tightness between the insert pin head and the insert pin tail, preferably, a first step is formed between the first end and the second end of the insert pin head, and correspondingly, the inner wall surface of the pipe body of the insert pin tail is provided with a second step which is abutted against the first step, so that the insert pin head can be limited in the insert pin tail.

In order to solve the second technical problem, preferably, a cooling channel is formed inside the insert pin head, and the cooling channel has an inlet and an outlet, and the inlet and the outlet of the cooling channel are located at the rear end or the side end of the insert pin tail. Wherein cooling channel's import and export set up at its rear end or side, then select by the type of waiting to form the part, in addition, owing to inlay the inside cooling channel that is equipped with of needle, when die-casting molding, inject into behind the cooling medium through the import in toward cooling channel, can form cooling circuit in inlaying the needle to can treat that the part that the shaping part is located inlays around the needle effectively cools off, prevent this part because the cooling is out of position and lead to phenomenons such as loose, gas pocket and shrinkage cavity.

Further, the cooling channel comprises a cooling pipe with a water inlet, the connecting body correspondingly comprises a cavity for accommodating the cooling pipe, a gap is formed between the cavity and the pipe wall of the cooling pipe, and the gap is communicated with the outlet of the cooling channel.

Further, the inlet and the outlet of the cooling channel are located at the side end of the tail portion of the insert pin, correspondingly, the connecting body is provided with a first communication port for communicating the inlet with the water inlet of the cooling pipe, and the connecting body is provided with a second communication port for communicating the gap with the outlet of the cooling channel. When the inlet and the outlet of the cooling channel are positioned at the side end of the tail part of the insert pin, the connecting body needs to be improved, namely, a first communicating port for communicating the inlet with the water inlet of the cooling pipe and a second communicating port for communicating the gap with the outlet of the cooling channel are arranged on the connecting body.

In order to attach the cooling pipe to the connecting body, it is preferred that the trailing end of the cooling pipe is attached in the connecting body by a second fastening member, which abuts the first fastening member. When the head of the insert needle needs to be replaced, the first fastening piece and the second fastening body are sequentially opened, the connecting body and the cooling pipe are sequentially pulled out, the head of the insert needle can be replaced by a new head spare part, and then the connecting body and the cooling pipe are inserted, and the assembly is finally achieved by fastening the first fastening piece and the second fastening piece.

Further, along the flow path of the cooling liquid flowing into the cooling pipe, the water inlet of the cooling pipe is located at an upstream position of the tail end of the cooling pipe, and the position of the water inlet of the cooling pipe is narrower than that of the tail end of the cooling pipe. Namely, the tail end of the cooling pipe is more expanded relative to the position of the water inlet of the cooling pipe, so that the cooling pipe can be better connected to the connecting body.

In addition to locating the inlet and outlet of the cooling channel at the side ends of the shank portion, it may be located at the rear end of the shank portion, and preferably the inlet and outlet of the cooling channel are restricted to a fitting at the rear end of the shank portion, the fitting having a water inlet nozzle connected to the inlet and a water outlet nozzle connected to the outlet.

Compared with the prior art, the utility model has the advantages that: through will inlaying the needle and be divided into and inlay the needle head and inlay the needle afterbody to with inlaying the needle head portion for the first end and the second end of external diameter variation, and through setting up at the connector and the first fastener of inlaying the needle afterbody can with the great second end fastening of external diameter with spacing holistic the needle head of inlaying in inlaying the needle afterbody, only need open when tearing open and changing can, can change fast and improve production efficiency.

Drawings

FIG. 1 is a schematic structural view of a pin insert structure according to embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view showing the structure of the insert pin head in embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view of the tail of the insert pin in example 1 of the present invention;

FIG. 5 is a schematic view showing the structure of a cooling pipe in example 1 of the present invention;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a schematic structural view of a pin insert structure according to embodiment 2 of the present invention;

FIG. 8 is a cross-sectional view of FIG. 7;

fig. 9 is an enlarged schematic view at B in fig. 8.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Example 1

As shown in FIGS. 1 to 6, the preferred embodiment of the present invention is shown. The insert pin structure of this embodiment is including inserting pin head 1 and inserting pin afterbody 2, insert pin head 1 and include first end 11 and the second end 12 that connect gradually from the past to the back, the external diameter of first end 11 is less than the external diameter of second end 12, correspondingly, insert pin afterbody 2 is the equal open body in both ends, insert pin head 1's first end 11 and pass insert pin afterbody 2's first uncovered 21 and expose insert pin afterbody 2, and spacing in inserting pin afterbody 2 with the help of second end 12, still be provided with the connector 3 that is used for fixed second end 12 in inserting pin afterbody 2, insert pin afterbody 2's second uncovered 22 still is provided with and can be with connector 3 and insert pin head 1's second end 12 fastening first fastener 4 wherein. Through being divided into the insert needle head 1 and insert needle afterbody 2 with the insert needle head 1 and be divided into the first end 11 and the second end 12 that the external diameter size is different, and through setting up the connector 3 and the first fastener 4 at insert needle afterbody 2 can fasten the great second end 12 of external diameter with spacing holistic insert needle head 1 in insert needle afterbody 2, only need open first fastener 4 during the replacement of tearing open can, can carry out the change of quick insert needle head 1.

Specifically, in order to increase the connection tightness between the insert pin head 1 and the insert pin tail 2, a first step 13 is formed between the first end 11 and the second end 12 of the insert pin head 1, and correspondingly, the inner wall surface of the pipe body of the insert pin tail 2 has a second step 23 abutting against the first step 13, so that the insert pin head 1 can be limited in the insert pin tail 2. The insert pin head part 1 is internally provided with a cooling channel 5, the cooling channel 5 is provided with an inlet 51 and an outlet 52, and the inlet 51 and the outlet 52 of the cooling channel 5 are positioned at the rear end or the side end of the insert pin tail part 2. Wherein the inlet 51 and the outlet 52 of the cooling channel 5 are arranged at the rear end or the side end thereof, and are selected by the type of the component to be formed, and in addition, because the cooling channel 5 is arranged inside the insert pin, when the die-casting is performed, after the cooling medium is injected into the cooling channel 5 through the inlet 51, a cooling loop can be formed in the insert pin, so that the part of the component to be formed around the insert pin can be effectively cooled, and the phenomena of looseness, air holes, shrinkage holes and the like caused by the part being not cooled can be prevented.

Wherein, the cooling channel 5 comprises a cooling pipe 53 with a water inlet 530, correspondingly, the connecting body 3 has a cavity 30 for accommodating the cooling pipe 53, a gap 301 is formed between the cavity 30 and the pipe wall of the cooling pipe 53, and the gap 301 is communicated with the outlet 52 of the cooling channel 5. The inlet 51 and the outlet 52 of the cooling channel 5 are located at the side end of the insert pin tail 2, and correspondingly, the connecting body 3 has a first communication port 31 for communicating the inlet 51 with the inlet 530 of the cooling pipe 53, and the connecting body 3 has a second communication port 32 for communicating the gap 301 with the outlet 52 of the cooling channel 5. When the inlet 51 and the outlet 52 of the cooling channel 5 are located at the side end of the insert pin tail 2, the connecting body 3 needs to be modified, that is, the connecting body 3 is provided with the first communication port 31 for communicating the inlet 51 with the water inlet 530 of the cooling tube 53 and the second communication port 32 for communicating the gap 301 with the outlet 52 of the cooling channel 5, along the flow path of the cooling liquid flowing into the cooling tube 53, the water inlet 530 of the cooling tube 53 is located at the upstream position of the tail end of the cooling tube 53, the position of the water inlet 530 of the cooling tube 53 is narrower than the position of the tail end 532 of the cooling tube 53, that is, the position of the tail end 532 of the cooling tube 53 is larger than the position of the water inlet 530 of the cooling tube 53, so as to better connect the cooling tube 53 to the connecting body 3, wherein the tail end 532 of the cooling tube 53 is connected to the connecting body 3 by the second fastening member 6, of course, the tail end 532 of the cooling tube 53 and the second fastening member 6 of the embodiment are provided as an integral structure, the two parts can be arranged separately, wherein the second fastening piece 6 is abutted against the first fastening piece 4, when the insert pin head 1 needs to be replaced, the insert pin head 1 can be replaced by a new head spare part only by sequentially opening the first fastening piece 4 and the second fastening piece 6 and sequentially drawing out the connecting body 3 and the cooling pipe 53, and then the connecting body 3 and the cooling pipe 53 are inserted and the first fastening piece 4 and the second fastening piece 6 are fastened to finally realize the assembly.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the inlet 51 and the outlet 52 of the cooling channel 5 are arranged at the rear end of the insert pin tail part 2, the inlet 51 and the outlet 52 of the cooling channel 5 are limited to a joint 7 at the rear end of the insert pin tail part 2, the joint 7 is provided with a water inlet nozzle 71 connected with the inlet 51 and a water outlet nozzle 72 connected with the outlet 52, as shown in fig. 7-9.

Claims

1. The utility model provides an inlay needle structure, including inlaying needle head (1) and inlaying needle afterbody (2), its characterized in that: the insert needle head (1) comprises a first end portion (11) and a second end portion (12) which are sequentially connected from front to back, the outer diameter of the first end portion (11) is smaller than that of the second end portion (12), correspondingly, the insert needle tail (2) is a pipe body with two open ends, the first end portion (11) of the insert needle head (1) penetrates through the first open end (21) of the insert needle tail (2) to be exposed out of the insert needle tail (2), the insert needle tail (2) is limited in the insert needle tail (2) through the second end portion (12), a connecting body (3) used for fixing the second end portion (12) is further arranged in the insert needle tail (2), and a first fastening piece (4) capable of fastening the connecting body (3) and the second end portion (12) of the insert needle head (1) is further arranged in the second open end portion (22) of the insert needle tail (2).

2. The insert pin structure of claim 1, wherein: a first step (13) is formed between the first end (11) and the second end (12) of the insert pin head (1), correspondingly, the inner wall surface of the pipe body of the insert pin tail (2) is provided with a second step (23) which is abutted against the first step (13), so that the insert pin head (1) can be limited in the insert pin tail (2).

3. The insert pin structure of claim 2, wherein: a cooling channel (5) is formed in the insert pin head (1), the cooling channel (5) is provided with an inlet (51) and an outlet (52), and the inlet (51) and the outlet (52) of the cooling channel (5) are located at the rear end or the side end of the insert pin tail (2).

4. The insert pin structure of claim 3, wherein: the cooling channel (5) comprises a cooling pipe (53) with a water inlet (530), the connecting body (3) is correspondingly provided with a cavity (30) for accommodating the cooling pipe (53), a gap (301) is formed between the cavity (30) and the pipe wall of the cooling pipe (53), and the gap (301) is communicated with an outlet (52) of the cooling channel (5).

5. The insert pin structure of claim 4, wherein: the inlet (51) and the outlet (52) of the cooling channel (5) are positioned at the side end of the insert pin tail part (2), correspondingly, the connecting body (3) is provided with a first communication port (31) which is communicated with the inlet (51) and the water inlet (530) of the cooling pipe (53), and the connecting body (3) is provided with a second communication port (32) which is communicated with the gap (301) and the outlet (52) of the cooling channel (5).

6. The insert pin structure of claim 5, wherein: the tail end (532) of the cooling pipe (53) is connected in the connecting body (3) through a second fastening piece (6), and the second fastening piece (6) is abutted to the first fastening piece (4).

7. The insert pin structure of claim 6, wherein: along the flow path of the cooling liquid flowing into the cooling pipe (53), the water inlet (530) of the cooling pipe (53) is located at an upstream position of the tail end (532) of the cooling pipe (53), and the position of the water inlet (530) of the cooling pipe (53) is narrower than the position of the tail end (532) of the cooling pipe (53).

8. The insert pin structure according to any one of claims 4 to 7, wherein: the inlet (51) and outlet (52) of the cooling channel (5) are limited to a joint (7) located at the rear end of the insert tail (2), the joint (7) having a water inlet nozzle (71) connected to the inlet (51) and a water outlet nozzle (72) connected to the outlet (52).