CN216729470U - Ring sleeve sealing punch for high vacuum die casting - Google Patents

Abstract

The utility model belongs to the technical field of high vacuum die casting, and relates to a ring sleeve sealing punch for high vacuum die casting; the punching head comprises a copper ring A, a punching head body, a punching head joint, a water distribution block and a copper ring B, wherein the copper ring A is expanded by calipers and is sleeved in a corresponding groove of the punching head body; a gap is formed between the copper ring A and the punch body; the punch head joint is respectively connected with the punch head body and the water diversion block through threads; the copper ring B is expanded by a caliper and sleeved in a corresponding groove of the punch body; the utility model aims to eliminate the tolerance between the punch head and the material cup on the premise of ensuring smooth injection of the punch head, and prevent the problems of internal air holes of a casting and bubbling after heat treatment caused by air leakage due to a gap between the punch head and the material cup and incapability of meeting the standard of the vacuum value in a cavity in the process of die-casting and vacuumizing.

Description

Ring sleeve sealing punch for high vacuum die casting

Technical Field

The utility model belongs to the technical field of high vacuum die casting, and relates to a ring sleeve sealing punch for high vacuum die casting.

Background

The existing vacuum die-casting process adopts two types of punches: the first ordinary drift of formula as an organic whole, this type drift is smooth and easy for guaranteeing the motion in the course of the work, has certain clearance with the material cup, and at the die-casting evacuation in-process, the air can get into the die cavity along the clearance of drift and material cup, leads to the interior vacuum value of die cavity to be on the high side. The second punch is a split sealing punch, a layer of punching sleeve is arranged on the outer side of the punch, no gap exists between the punching sleeve and the material cup, and along with the accumulation of the injection molding times, aluminum liquid enters the punching sleeve to expand the punching sleeve, so that the sealing effect is achieved. However, since there is no tolerance between the punch and the cup, the friction force during injection is large, the service life is short, and the punch is very easy to be stuck.

Application number is 201410060475.X utility model discloses a drift is used in high vacuum die-casting, include: one end of the punch body is provided with an axial center hole with a certain depth to serve as a cooling cavity; a shooting rod with an axial central through hole, wherein the shooting rod is coaxially arranged opposite to the punch body, and the other opposite end of the shooting rod is connected with the driving part; and a punch shooting rod threaded connecting piece with an axial central through hole, which is arranged between the punch body and the shooting rod, two ends of the punch shooting rod threaded connecting piece are respectively and fixedly connected with the end parts of the punch body and the shooting rod, and a cooling water pipe for providing cooling water passes through the central through holes of the shooting rod and the punch shooting rod threaded connecting piece and then is communicated with the central through hole of the threaded water tank piece. The utility model also discloses a lubricating device for the punch. The utility model can effectively realize the sealing between the punch head and the pressure chamber, and the spraying lubrication of the injection rod and the water cooling circulation system can well realize the lubrication and cooling of the punch head, thereby prolonging the service life of the punch head and the injection chamber, reducing the frequency of replacing the punch head and improving the production efficiency.

Application number 201120495427.5 utility model discloses a punching press terrace die drift, including guide part and blade part, the last anticorrosive coating and the wearing layer that has covered in proper order from inside to outside of blade part, the anticorrosive coating is the carborundum ceramic layer, and the wearing layer is cermet coating. The punching machine has the advantages of high temperature resistance, high hardness, strong wear resistance and good affinity, and the anticorrosive layer and the wear-resistant layer directly participate in the blanking of a material part, so that the average service life of the punch is prolonged by 6-8 times, the maintenance cost of replacing the punch by a die is saved, the trouble and workload of replacing the punch by workers are reduced, and the normal and stable production of the pressing machine is ensured.

Application number 201410060475.X patent has certain relevance with this application technical scheme, but its key lubricating arrangement who is the drift, and both structures are different, and the correlation degree is low. Application No. 201120495427.5 utility model patent is used for the extrusion process, non-die-casting trade accessory, and the relevancy is very low.

Disclosure of Invention

The utility model aims to solve the technical problem of air leakage between a punch and a material cup in the vacuumizing process in the prior art, and provides a ring sleeve sealing punch for high-vacuum die-casting.

The utility model adopts a double-seal ring structure, the front end seal ring plays a sealing role, the seal section is narrow, and the material is made of beryllium-cobalt-copper with special material, and the material is soft and wear-resistant. The structure and the material can ensure that the process of the punch moving in the material cup is smooth and not blocked on the premise of ensuring sealing.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:

the ring sleeve sealing punch for high vacuum die casting comprises a copper ring A5 and a punch body 3, wherein the copper ring A5 is used for unfolding the copper ring A5 by using calipers and is sleeved in a corresponding groove of the punch body 3.

Further, a gap is formed between the copper ring a5 and the punch body 3.

A loop sealing punch for high vacuum die casting also comprises a punch joint 1 and a water diversion block 4;

the punch head joint 1 is respectively connected with the punch head body 3 and the water distribution block 4 through threads.

Furthermore, the copper ring A5 adopts calliper to strut the copper ring along the copper ring gap in the installation, blocks copper ring A5 on the corresponding notch position of drift body, and copper ring A5 has certain elasticity, and the back copper ring A5 that loosens calliper can tightly overlap on the corresponding position of drift.

The ring sleeve sealing punch for high vacuum die casting also comprises a copper ring B6; the copper ring B6 is unfolded by a caliper from the copper ring B6 and sleeved in a corresponding groove of the punch body 3.

Further, the punch joint 1 is connected with an injection rod which controls the punch to move on the die-casting machine.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model relates to a combined type ring sleeve sealing punch which can ensure real-time sealing between the punch and a material cup and smooth movement of the punch in the material cup without blockage.

The utility model aims to eliminate the tolerance between the punch and the material cup on the premise of ensuring smooth injection of the punch, and prevent the problems of internal air holes of a casting, bubbling after heat treatment and the like caused by air leakage due to the gap between the punch and the material cup and incapability of reaching the standard of the vacuum value in a cavity in the process of die-casting and vacuumizing.

Drawings

The utility model is further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the assembly of the ring sleeve sealing punch for high vacuum die casting according to the present invention;

FIG. 2 is a view showing the internal structure of the ring sleeve sealing punch for high vacuum die casting according to the present invention;

FIG. 3 is a schematic structural view of a copper ring A;

FIG. 4 is a schematic view of the working environment of the ring sleeve sealing punch for high vacuum die casting according to the present invention;

in the figure:

1. punch joint, 2, internal cooling water path, 3, punch body, 4, water dividing block, 5, copper rings A and 6, copper rings B and 7, copper ring gap, 8, punch gap, 9, material cup, 10, aluminum liquid, 11, injection rod on equipment, 12 and lubricating oil of punch.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the utility model.

The utility model is described in detail below with reference to the attached drawing figures:

referring to fig. 1, aluminum liquid enters the sealing copper ring a and the punch body 3 during injection, the sealing copper ring a is expanded, and the tolerance between the punch copper ring a and the material cup is eliminated, so that real-time sealing is ensured during air extraction. Meanwhile, the copper ring A has low hardness while ensuring certain wear resistance, and has small friction with the material cup in the injection movement process. The copper ring B does not play a sealing role, and the main function of the copper ring B is wear resistance and ensures the contact radial length of the punch and the material cup, so that the contact area between the punch and the material cup is prevented from being too small, and the coaxiality is prevented from being in problem in the actual injection process.

Because the drift is higher at operating condition's velocity of motion, bearing pressure to contact high temperature aluminum alloy, the temperature variation of its drift body 3 is very big. There is a cooling system inside.

Referring to fig. 2, reference numeral 1 denotes a punch joint, 2 denotes an internal cooling water passage, 3 denotes a punch body, 4 denotes a water diversion block, 5 denotes a copper ring a, and 6 denotes a copper ring B.

The connection relationship of the punch is as follows, a punch joint shown in a number 1 is a joint for connecting the punch with an injection rod which controls the movement of the punch on a die-casting machine, and the position is directly connected with die-casting equipment in the actual production process. The punch joint shown in the number 1 is connected with the punch body shown in the number 3 and the water distribution block shown in the number 4 in a threaded mode. The connection mode of the copper ring A shown in the number 5 and the copper ring B shown in the number 6 and the punch is clamping connection, and the copper ring of the punch is spread by a special caliper and sleeved in a corresponding groove of the punch body.

As shown in fig. 3, which is a detailed schematic view of the copper sealing ring a, in the installation process, the copper sealing ring a is opened along a copper ring gap by using a caliper and is clamped at a corresponding groove position of the punch, and the copper sealing ring a can be tightly sleeved at the corresponding position of the punch after the caliper is released due to certain elasticity of the copper sealing ring.

Fig. 4 is a diagram of the working environment of the punch, wherein 9 is a material cup, 10 represents aluminum liquid, 11 is a shot bar on the device, and 12 is lubricating oil of the punch. During the movement of the punch, aluminum liquid enters between the copper ring A5 and the punch body 3 through a punch gap shown by the number 8 in figure 1, and the copper ring is continuously expanded along with the injection. Therefore, although the copper ring is continuously abraded in the moving process, the effective sealing between the punch head and the material cup is ensured because the aluminum liquid continuously enters.

The copper rings A and B can be replaced by other materials, such as H13 steel, but have corresponding abrasion to the material cup and lower service life;

the above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the utility model, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the utility model as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.

Claims (3)

1. The utility model provides a sealed drift of ring cover for high vacuum die-casting which characterized in that:

the punching head comprises a copper ring A (5) and a punching head body (3), wherein the copper ring A (5) is expanded by a caliper and sleeved in a corresponding groove of the punching head body (3);

a punch gap (8) is arranged between the copper ring A (5) and the punch body (3);

the water distributor also comprises a punch joint (1) and a water distribution block (4);

the punch head joint (1) is respectively connected with the punch head body (3) and the water distribution block (4) through threads;

also comprises a copper ring B (6); and the copper ring B (6) is propped open by a caliper and is sleeved in a corresponding groove of the punch body (3).

2. The ring sleeve sealing punch for high vacuum die casting according to claim 1, wherein:

copper ring A (5) adopt calliper to strut the copper ring along the copper ring gap in the installation, block copper ring A (5) on the corresponding groove position of drift body, copper ring A (5) have certain elasticity, and copper ring A (5) can tightly overlap on the corresponding position of drift after loosening calliper.

3. The ring sleeve sealing punch for high vacuum die casting according to claim 1, wherein:

the punch joint (1) is connected with an injection rod which controls the punch to move on the die-casting machine.

Images