CN218362011U

CN218362011U - Prevent mould structure that foundry goods warp

Info

Publication number: CN218362011U
Application number: CN202222256786.6U
Authority: CN
Inventors: 周瑞峰; 陈涛
Original assignee: Dongguan Weideng Machinery Co ltd
Current assignee: Dongguan Weideng Machinery Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-01-24
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a prevent mould structure that foundry goods warp belongs to the die casting die field, including casing, mold core, the mold core setting is provided with the die cavity in the casing in the mold core, is provided with foundry goods shaping groove in the die cavity, and the edge in foundry goods shaping groove is provided with dodges the lug, still is provided with anti-deformation skeleton groove in the die cavity, and the half parcel of anti-deformation skeleton groove is dodging the side of lug and is communicateing with foundry goods shaping groove. Compared with the prior art: firstly, the mold can be communicated with the outside of a groove position structure of a casting to form a semi-wrapped anti-deformation framework through an anti-deformation framework groove, so that the groove position structure is supported and the strength is increased when the casting is formed, the groove position structure of the casting is prevented from deforming, and the flatness and the quality of a product are ensured; secondly, set up gas vent and cinder ladle groove in the die cavity of mould, the gas vent can be automatically in the cinder ladle inslot is arranged to the air in the foundry goods shaping inslot at mould die-casting feeding process, avoids the work piece after the shaping to appear the sand hole.

Description

Prevent mould structure that foundry goods warp

Technical Field

The utility model belongs to the die casting die field, in particular to prevent mould structure that foundry goods warp.

Background

Electronic PCB heat dissipation fixed plate class product generally adopts alloy material to pass through mould die-casting shaping, nevertheless because the product needs the adaptation PCB board, can have some breach or trench structure, in order not to influence heat dispersion, breach or trench structure all have the requirement of certain roughness usually. However, when the existing die is used for die-casting, after a high-temperature liquid raw material is formed and demoulded in a die cavity, the high-temperature liquid raw material is easily shrunk and deformed due to the relatively thin notch or groove structure when being placed in a natural state for cooling, so that the flatness of the product cannot meet the requirement, and the use performance of the product is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the primary object of the present invention is to provide a mold structure for preventing the deformation of castings, which can prevent the deformation of the notches or groove structures of castings, and ensure the flatness of products;

another object of the utility model is to provide a mold structure for preventing the deformation of the casting, which avoids the sand holes on the formed casting;

a final object of the utility model is to provide a prevent mould structure of foundry goods deformation, this mould simple structure, with low costs, facilitate promotion and use.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a prevent mould structure that foundry goods warp, including casing, mold core, the mold core sets up in the casing, be provided with the die cavity in the mold core, be provided with foundry goods shaping groove in the die cavity, the edge in foundry goods shaping groove is provided with dodges the lug, still be provided with the shape skeleton groove of preapring for an unfavorable turn of events in the die cavity, the half parcel of shape skeleton groove of preapring for an unfavorable turn of events is dodging the side of lug and communicate with foundry goods shaping groove. In this application, because dodge the existence of lug when the foundry goods shaping, can form the slot bit type structure in the position that the foundry goods corresponds dodge the lug, relatively thin leads to the shrinkage deformation easily. But through setting up the deformation skeleton groove of preapring for an unfavorable turn of events, can communicate the deformation skeleton of preapring for an unfavorable turn of events that forms half parcel outside the trench type structure of foundry goods, can form support, increase intensity to trench type structure when the foundry goods shaping, avoid the trench type structure deformation of foundry goods, influence the roughness of product. After the casting is formed, the anti-deformation framework is milled through CNC machining.

Furthermore, the deformation-preventing framework groove is of a square groove structure with openings at two ends, the openings at the two ends are communicated with the casting forming groove, a spacing block is further arranged between the openings at the two ends, and one side of the spacing block facing the casting forming groove is flush with the edge of the casting forming groove. Through the setting of separating the blank piece, can make the shape skeleton of preapring for an unfavorable turn of events form the hollow out construction that both ends and foundry goods are connected, can enough form firm fixed effect, also can conveniently preapring for an unfavorable turn of events shape skeleton and mill.

Furthermore, an air outlet is formed in the tail end of the casting forming groove, a slag ladle groove is formed outside the air outlet, and the air outlet is communicated with the slag ladle groove. In this application, the gas vent can be automatically in the air escape cinder ladle inslot of mould die-casting feeding in-process in the foundry goods shaping inslot, avoids the work piece after the shaping hole that appears.

Furthermore, the mould also comprises an ejector pin assembly, wherein the ejector pin assembly comprises an ejector pin plate and more than one ejector pin, and the ejector pins are fixedly connected to the ejector pin plate. When the mold is opened, the ejector pin can be used for ejecting the workpiece out of the mold cavity.

Furthermore, the shell comprises a front film frame and a rear film frame, the front film frame covers the rear film frame to form a containing cavity, and the mold core is arranged in the containing cavity.

Furthermore, the bottom of the shell is also provided with two mold feet, the upper surfaces of the two mold feet are fixedly connected to the rear mold frame, a clamping bearing position is formed between the two mold feet, and the ejector plate is fixedly connected to the clamping bearing position. The carrier can be used for carrying and holding the ejector plate by means of the clamping carrier.

Further, the mold core comprises an upper mold and a lower mold, and the upper mold covers the lower mold to form the mold cavity. The upper die is installed at the bottom of the front die frame, and the lower die is installed at the top of the rear die frame.

Furthermore, still be provided with the front mould sprue on the preceding membrane frame, the both sides of going up the bottom of mould still are provided with preceding membrane subchannel, the lower mould is provided with into jiao kou at the front end that is located the foundry goods shaping groove, preceding membrane subchannel entry and front mould sprue intercommunication, export and the mouth intercommunication of advancing jiao kou. The injection molding raw material soup in the machine table can enter the front film sub-runners from the front mold main runner, enter the glue inlet through the front film sub-runners on the two sides and then enter the mold cavity for injection molding.

The utility model has the advantages of, compare in prior art:

firstly, the mould of the utility model can be communicated to form a semi-wrapped anti-deformation framework outside the groove position structure of the casting by arranging the anti-deformation framework groove, so that the groove position structure is supported and the strength is increased when the casting is formed, the groove position structure of the casting is prevented from being deformed, and the flatness and the quality of a product are ensured;

secondly, the air exhaust port and the cinder ladle groove are arranged in the die cavity, and the air exhaust port can automatically exhaust air in the casting forming groove into the cinder ladle groove in the die-casting feeding process of the die, so that a formed workpiece is prevented from generating sand holes;

finally, the utility model discloses simple structure, with low costs, facilitate promotion and use.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is an exploded view of the present embodiment.

Fig. 3 is a schematic back structure diagram of the upper mold of the present embodiment.

Fig. 4 is a front view schematically illustrating the structure of the lower mold of the present embodiment.

Fig. 5 is a partially enlarged view of a in fig. 4.

Fig. 6 is a schematic structural view of the casting with the deformation-preventing skeleton of the present embodiment.

Fig. 7 is a schematic structural view of the casting with the deformation-preventing skeleton milled away according to the present embodiment.

Detailed Description

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

In order to achieve the above object, the technical solution of this embodiment is as follows:

referring to fig. 1 to 7, the embodiment provides a mold structure for preventing a casting from deforming, which includes a housing 1 and a mold core 2, wherein the mold core 2 is arranged in the housing 1, a mold cavity 3 is arranged in the mold core 2, a casting forming groove 31 is arranged in the mold cavity 3, an avoiding bump 32 is arranged at an edge of the casting forming groove 31, an anti-deformation framework groove 33 is further arranged in the mold cavity 3, and the anti-deformation framework groove 33 is half-wrapped at a side edge of the avoiding bump 32 and is communicated with the casting forming groove 31. In the present application, when the casting 4 is molded, the notch pattern 41 is formed at a position of the casting 4 corresponding to the relief projection 32 due to the presence of the relief projection 32, and the relatively thin casting easily causes shrinkage deformation. But through setting up the shape skeleton groove 33 of preapring for an unfavorable turn of events, can form the shape skeleton 42 of preapring for an unfavorable turn of events of half parcel in the outer intercommunication of the trench type structure 41 of foundry goods 4, form support, add intensity to trench type structure 41 when can the foundry goods 4 shaping, avoid the trench type structure 41 of foundry goods 4 to warp, influence the roughness of product. After the casting 4 is formed, the deformation-preventing framework 42 is milled through CNC machining.

Further, the deformation-preventing framework groove 33 is a square groove structure with openings 34 at two ends, the openings 34 at two ends are communicated with the casting forming groove 31, a spacing block 35 is further arranged between the openings 34 at two ends, and one surface of the spacing block 35 facing the casting forming groove 31 is flush with the edge of the casting forming groove 31. Through the setting of separating the blank piece 35, can make the shape skeleton of preapring for an unfavorable turn of events form the hollow out construction that both ends and foundry goods are connected, can enough form firm fixed effect, also can conveniently preapring for an unfavorable turn of events shape skeleton 42 mill.

Further, an exhaust port 36 is arranged at the tail end of the casting forming groove 31, a slag ladle groove 37 is arranged outside the exhaust port 36, and the exhaust port 36 is communicated with the slag ladle groove 37. In this application, gas vent 36 can be automatically in the air escape to cinder ladle groove 37 in the foundry goods shaping groove 31 in mould die-casting feeding process, avoids the work piece after the shaping sand hole to appear.

Furthermore, the mould also comprises an ejector pin assembly, the ejector pin assembly comprises an ejector pin plate 5 and more than one ejector pin 6, and the ejector pin 6 is fixedly connected to the ejector pin plate 5. When the mould is opened, the thimble 6 can be used for ejecting the workpiece out of the mould cavity 3.

Further, the shell 1 comprises a front film frame 11 and a rear film frame 12, the front film frame 11 covers the rear film frame 12 to form a containing cavity, and the mold core 2 is arranged in the containing cavity.

Further, the bottom of the shell 1 is provided with two mold legs 13, the upper surfaces of the two mold legs 13 are fixedly connected to the rear mold frame 12, a clamping bearing position 14 is formed between the two mold legs 13, and the ejector plate 5 is fixedly connected to the clamping bearing position 14. The carrier positions 14 can be used for carrying and fixing the ejector plate 5.

Further, the mold core 2 includes an upper mold 21 and a lower mold 22, and the upper mold 21 covers the lower mold 22 to form the mold cavity 3. The upper mold 21 is mounted on the bottom of the front mold frame 11, and the lower mold 22 is mounted on the top of the rear mold frame 12.

Further, a front mold main runner 15 is further arranged on the front mold frame 11, front mold sub-runners 23 are further arranged on two sides of the bottom of the upper mold 21, a glue inlet 24 is formed in the front end, located in the casting forming groove 31, of the lower mold 22, an inlet of the front mold sub-runner 23 is communicated with the front mold main runner 15, and an outlet of the front mold sub-runner 23 is communicated with the glue inlet 24. The injection molding raw material soup in the machine table can enter the front film sub-runners 23 from the front mold main runner 15, enter the glue inlets 24 on the left side and the right side through the front film sub-runners 23 on the two sides, and then enter the mold cavities 3 on the left side and the right side for injection molding.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a prevent mould structure of foundry goods deformation, its characterized in that, includes casing, mold core, the mold core sets up in the casing, be provided with the die cavity in the mold core, be provided with foundry goods shaping groove in the die cavity, the edge in foundry goods shaping groove is provided with dodges the lug, still be provided with the shape skeleton groove of preapring for an unfavorable turn of events in the die cavity, the shape skeleton groove of preapring for an unfavorable turn of events wraps up at the side of dodging the lug and communicates with foundry goods shaping groove.

2. The mold structure for preventing the deformation of the casting according to claim 1, wherein the deformation-preventing skeleton grooves are square groove structures with openings at two ends, the openings at two ends are both communicated with the casting forming groove, and a spacing block is further arranged between the openings at two ends, and one surface of the spacing block facing the casting forming groove is flush with the edge of the casting forming groove.

3. The mold structure for preventing the deformation of the casting according to claim 1, wherein an exhaust port is arranged at the tail end of the casting forming groove, a slag ladle groove is arranged outside the exhaust port, and the exhaust port is communicated with the slag ladle groove.

4. The mold structure of claim 1, further comprising an ejector pin assembly, wherein the ejector pin assembly comprises an ejector pin plate and more than one ejector pin, and the ejector pin is fixedly connected to the ejector pin plate.

5. The mold structure for preventing the deformation of the casting according to claim 4, wherein the shell comprises a front mold frame and a rear mold frame, the front mold frame covers the rear mold frame to form a containing cavity, and the mold core is arranged in the containing cavity.

6. The mold structure for preventing the deformation of the casting according to claim 5, wherein the bottom of the housing is further provided with two mold legs, the upper surfaces of the two mold legs are fixedly connected to the rear mold frame, a clamping and bearing position is formed between the two mold legs, and the ejector plate is fixedly connected to the clamping and bearing position.

7. The mold structure for preventing the deformation of a casting according to claim 5, wherein the mold core comprises an upper mold and a lower mold, the upper mold is covered on the lower mold to form the mold cavity, the upper mold is installed at the bottom of the front mold frame, and the lower mold is installed at the top of the rear mold frame.

8. The mold structure for preventing the deformation of castings according to claim 7, wherein the front mold frame is further provided with a front mold main runner, two sides of the bottom of the upper mold are further provided with front mold sub-runners, the lower mold is provided with a glue inlet at the front end of the casting forming groove, the inlet of the front mold sub-runner is communicated with the front mold main runner, and the outlet of the front mold sub-runner is communicated with the glue inlet.