CN208230825U

CN208230825U - Help to increase the die casting machine piston mechanism for expecting cake thickness

Info

Publication number: CN208230825U
Application number: CN201820657569.9U
Authority: CN
Inventors: 杨兴国
Original assignee: Chongqing Technology and Business Institute
Current assignee: Chongqing Technology and Business Institute
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2018-12-14
Anticipated expiration: 2028-05-04

Abstract

The utility model discloses a kind of die casting machine piston mechanisms for helping to increase material cake thickness, including connector and the piston only being detachably connected with connector, the piston only is equipped with sunk structure axially inward in the end face far from connector one end, the peripheral outer wall of piston only has one to be slidably matched section, and antifriction alloy coating is equipped in the section that is slidably matched.The utility model under the premise of not changing mold structure, can effectively increase the material cake thickness of casting, to guarantee cast product mechanical performance, have many advantages, such as good cooling results, wear-resisting and long service life.

Description

Help to increase the die casting machine piston mechanism for expecting cake thickness

Technical field

The utility model belongs to magnesium alloy compression casting equipment technical field, and in particular to one kind helps to increase material cake The die casting machine piston mechanism of thickness.

Background technique

Compression casting, also known as die casting refer to using die casting machine under high pressure effect, make liquid or semi-liquid metal with higher Speed fills mold cavity, and is cured to obtain required casting, is most common metal forming process, has product quality Well, the advantages that high production efficiency.

In press casting procedure, if die-cast product material cake thickness is excessively thin, deficient casting easy to form, cold shut, stomata, nigrescence, it is loose, The defects of lockhole, causes product mechanical performance to decline, and in the case where mold structure has been defined, how to have increased material cake thickness As technical problem urgently to be resolved.

In addition, the important process component as die casting machine, the generally existing serious wear of the piston of injection mechanism, service life Short problem, leads to that the production cost increases.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of die casting machine piston machine for helping to increase material cake thickness Structure can effectively increase the material cake thickness of die-cast product, improve product mechanical performance.

To achieve the above object, technical solutions of the utility model are as follows:

A kind of die casting machine piston mechanism for helping to increase material cake thickness, including connector and be detachably connected with connector Piston only, the piston only is equipped with sunk structure axially inward, piston sheet in the end face far from connector one end The peripheral outer wall of body has one to be slidably matched section, and antifriction alloy coating is equipped in the section that is slidably matched.

Using the above structure, since piston only end face uses concave design, in this way the case where not changing mold structure Under, by sunk structure casting material cake thickness is increased, and facilitate the transmitting of casting pressure, casting has been effectively ensured The mechanical performance of product, while cinder ladle can also be served as using sunk structure.The setting of antifriction alloy coating can significantly improve The service life of piston mechanism, advantageously reduces production cost.

Preferably, the piston only is open at one end, the closed hollow structure of the other end, center is equipped with cooling Chamber, connector one end have an embedded division in piston only open end insertion piston only, in the embedded division and piston only Wall is threadedly engaged, and the connector has axially disposed centre bore, and the centre bore is connected to cooling chamber, in the centre bore It is inside equipped with cooling water pipe, described cooling water pipe one end penetrates in cooling chamber.The structure advantageously ensures that the cooling of piston only Effect effectively prevent fracture cake or movement clamping stagnation, while also contributing to further increasing the service life of piston only.

Preferably, the section that penetrates that the cooling water pipe penetrates cooling chamber is set relative to the central axis inclination of piston only It sets, guarantees that cooling water flows through formed punch inner wall from top to bottom, enhance cooling effect.

To guarantee the reliable sealing between piston only and connector, cooling water leakage is prevented, the piston only is close One end of connector has a path section, is arranged with sealing ring between the path section inner wall and embedded division outer wall.

Preferably, the connector is convex equipped with the backstop radially protruded in corresponding piston only end position It rises, to facilitate installation positioning of the piston only when being connected and fixed with connector.

Preferably, the piston only is equipped with the guidance conical surface far from one end end face outer rim of connector, which is helped In the motion guide for improving piston mechanism.

In order to reliably guarantee the structural strength of piston only while increasing and expecting cake thickness, the sunk structure is excellent Arc-shaped structure is selected, is seamlessly transitted between the guidance conical surface by cambered surface.

The utility model has the advantages that

Using the die casting machine piston mechanism for helping to increase material cake thickness of above technical scheme, mold can not changed Under the premise of construction, the material cake thickness of casting is effectively increased, to guarantee cast product mechanical performance, there are good cooling results, The advantages that wear-resisting and long service life.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of piston only in the utility model；

Fig. 3 is the structural schematic diagram of connector in the utility model.

Specific embodiment

The utility model is described in further detail with attached drawing with reference to embodiments.

As shown in Figure 1 to Figure 3, a kind of die casting machine piston mechanism for helping to increase material cake thickness, including threadably The connector 1 and piston only 2 being detachably connected.

Whole piston only 2 is substantially in hollow cylindrical-shaped structure, and front end is closed, rear end opening, close to its front end The center of position is equipped with cooling chamber 22, while also having from cooling chamber 22 along the connection to perforation to 2 rear end face of piston only The aperture of hole 22a, connecting hole 22a are less than the aperture of cooling chamber 22, are machined with internal screw thread on the hole wall of connecting hole 22a.

Piston only 2 is equipped with the guidance conical surface 7 in its front end surface outer rim, i.e. 2 front end of piston only is arranged to pre-small post-large Cone structure, while being equipped with the sunk structure 3 that is recessed axially inward in the end face center position of 2 front end of piston only, it is recessed The arc-shaped structure of structure 3 is fallen into, is seamlessly transitted between the guidance conical surface 7 of outer rim by cambered surface.

In order to reduce the abrasion in 2 use process of piston only, its service life is improved, is matched in the sliding of piston only 2 It closes and antifriction alloy coating is also provided with by plating mode in the peripheral outer wall of section 21, while in order to reduce material utilization amount, it is convenient Connection with connector 1 positions, and is additionally provided with the relatively small path section 23 of an outer diameter in 2 rear end of piston only.

Referring to figure 3., connector 1 is in a hollow cylindrical-shaped structure, and axial middle part has what is radially protruded to stop Gear protrusion 6, after being connected and fixed with piston only 2,2 rear end face of piston only is abutted with the stopper protrusion 6, to realize to work The axial limiting of plug body 2.

1 front end of connector has the embedded division 11 protruded axially forward, and the cylindrical structure of embedded division 11, center has It is machined with along the centre bore 12 axially through connector 1, on the outer wall of embedded division 11 and is adapted with internal screw thread in connecting hole 22a External screw thread is also machined with the sealing ring card slot 11a of a groove structure on the embedded division 11 rearward outer wall of position.

Structure that piston only 2 and connector 1 are connected and fixed as shown in Figure 1, the embedded division 11 of connector 1 by piston only 2 rear ends penetrate in connecting hole 22a, and are threadedly engaged therewith, and cooling water pipe 4 is equipped in the centre bore 12 of connector 1, cooling Water pipe 4 is connected with external water supply loop, and 4 end of cooling water pipe penetrates cooling through the connecting hole 22a of piston only 2 by centre bore 12 In chamber 22, and its section 4a that penetrates for penetrating cooling chamber 22 is tilted upwards, that is, penetrates the axis of section 4a and the center of piston only 2 Between line have angle, i.e., cooling water pipe 4 be it is oblique penetrate in cooling chamber 22, be conducive to further increase cooling effect in this way Rate.

To guarantee the reliable sealing between piston only 2 and connector 1, in the path section 23 and embedded division of piston only 2 The position sealing ring card slot 11a between 11 outer wall is also embedded with sealing ring 5.

Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this field Art personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make Multiple similar expressions, such transformation are each fallen within the protection scope of the utility model.

Claims

1. a kind of die casting machine piston mechanism for helping to increase material cake thickness, including connector (1) and detachable with connector (1) The piston only (2) of connection, it is characterised in that: the piston only (2) is equipped in the end face far from connector (1) one end along axis To inside sunk structure (3), the peripheral outer wall of piston only (2) has one to be slidably matched section (21), in the section that is slidably matched (21) it is equipped with antifriction alloy coating.

2. the die casting machine piston mechanism according to claim 1 for helping to increase material cake thickness, it is characterised in that: the work Plug body (2) is open at one end, and the closed hollow structure of the other end, center is equipped with cooling chamber (22), connector (1) one end tool There are the embedded division (11) in piston only (2) open end insertion piston only (2), the embedded division (11) and piston only (2) Inner thread cooperation, the connector (1) have axially disposed centre bore (12), the centre bore (12) and cooling chamber (22) it is connected to, is equipped with cooling water pipe (4) in the centre bore (12), described cooling water pipe (4) one end penetrates cooling chamber (22) In.

3. the die casting machine piston mechanism according to claim 2 for helping to increase material cake thickness, it is characterised in that: described cold But the section (4a) that penetrates that water pipe (4) penetrates cooling chamber (22) is obliquely installed relative to the central axis of piston only (2).

4. the die casting machine piston mechanism according to claim 2 for helping to increase material cake thickness, it is characterised in that: the work Plug body (2) has a path section (23) close to the one end of connector (1), path section (23) inner wall and embedded division (11) outer wall Between be arranged with sealing ring (5).

5. the die casting machine piston mechanism according to claim 2 for helping to increase material cake thickness, it is characterised in that: the company Connector (1) is equipped with the stopper protrusion (6) radially protruded in corresponding piston only (2) end position.

6. the die casting machine piston mechanism according to any one of claim 1 to 5 for helping to increase material cake thickness, feature Be: the piston only (2) is equipped with the guidance conical surface (7) far from one end end face outer rim of connector (1).

7. the die casting machine piston mechanism according to claim 6 for helping to increase material cake thickness, it is characterised in that: described recessed Structure (3) arc-shaped structure is fallen into, is seamlessly transitted between the guidance conical surface (7) by cambered surface.