CN112808970B

CN112808970B - Inverter box body forming die

Info

Publication number: CN112808970B
Application number: CN202011580370.9A
Authority: CN
Inventors: 童琦; 郑锡培
Original assignee: Ningbo Sancheng Die Casting Mould Co ltd
Current assignee: Ningbo Sancheng Die Casting Mould Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-29
Anticipated expiration: 2040-12-28
Also published as: CN112808970A

Abstract

The application discloses an inverter box body forming die, which comprises a fixed die and a movable die, wherein the fixed die and the movable die are matched in die assembly, a die cavity is formed at a contact surface of the fixed die and the movable die, a locking mechanism and a side die are arranged between the fixed die and the movable die, the side die is matched with the locking mechanism to move on two sides of the die cavity, the locking mechanism comprises an inclined guide pillar, a slide block and a guide rail, the guide rail is arranged on the movable die, the inclined guide pillar is arranged on the fixed die in an inclined manner outwards, the slide block is simultaneously in sliding connection with the inclined guide pillar and the guide rail, a plurality of overflow grooves are formed in the fixed die and the movable die around the die cavity, an unfolding device is arranged in the side die, the unfolding device can control the side die to be separated from the overflow grooves in the movable die, a cutting device is arranged on the fixed die, when the side die slides and a gap which can be passed by the cutting device is formed between the side die and the die cavity, the cutting device can be matched with the side die to cut off the overflow grooves in the fixed die, and can rapidly carry out the automatic die-stripping operation, and a part of waste materials are pre-cut while demoulding, so that the subsequent processing is facilitated.

Description

Inverter box body forming die

Technical Field

The application relates to the technical field of molds, in particular to an inverter box body forming mold.

Background

The die-casting die is a tool for casting metal parts, and is a tool for completing a die-casting process on a special die-casting die forging machine. The basic process of die casting comprises the following steps: molten metal is cast at low speed or high speed and filled into a cavity of a die, the die is provided with a movable cavity surface, and the molten metal is pressurized and forged along with the cooling process of the molten metal, so that the defects of shrinkage cavity and shrinkage porosity of a blank are eliminated, the internal structure of the blank reaches broken crystal grains in a forging state, and the comprehensive mechanical property of the blank is obviously improved; in order to improve the quality of die castings, in the process of filling a die cavity with molten metal, impurities and coating residues in the die cavity are removed as much as possible, and a front flow cold dirty molten metal polluted by gas and coating residues is removed, so that an overflow system is required. The overflow groove can also control the filling flow state of molten metal, make up for some die-casting defects caused by unreasonable design of a pouring system, and is an indispensable important component in a die-casting die.

However, the existing forming die has the following defects: the inside metal liquid of mould such as die-casting shaping in-process needs just can the drawing of patterns after cooling down, shaping latency is longer, die-casting shaping's product is mostly irregular shape in addition, when designing the mould, need use polylith mould to make up, when drawing of patterns after the die-casting finishes, the different complex moulds of different shapes are dismantled comparatively trouble, and because the product has the overflow launder waste material to exist all around, the degree of difficulty of drawing of patterns is higher, still need handle the waste material after the final smooth drawing of patterns, efficiency is lower.

Disclosure of Invention

An object of this application is to provide one kind can carry out automatic drawing of patterns operation fast to partly waste material is amputated in advance when the drawing of patterns, makes things convenient for the inverter box forming die of follow-up processing.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a molding die for an inverter box body comprises a fixed die and a movable die, wherein the fixed die is matched with the movable die in a matched mode, a die cavity is formed in the contact surface of the fixed die and the movable die, a locking mechanism and a side die are arranged between the fixed die and the movable die, the side die is matched with the locking mechanism to move on two sides of the die cavity, the locking mechanism comprises an inclined guide post, a sliding block and a guide rail, the guide rail is arranged on the movable die, the inclined guide post is arranged on the fixed die in an inclined mode towards the outer side, the sliding block is simultaneously connected with the inclined guide post and the guide rail in a sliding mode, a plurality of overflow grooves are formed in the fixed die and the movable die around the die cavity, an unfolding device is arranged in the side die and can control the side die to be separated from the overflow grooves in the movable die, a cutting device is arranged on the fixed die, and when a gap which can be passed by the cutting device is formed between the side die and the die cavity, the cutting device can be matched with the side die to cut off the overflow groove on the fixed die; the side die is internally provided with an accommodating cavity, the unfolding device comprises a connecting piece and an elastic resetting piece, one end of the connecting piece is longitudinally connected with the movable die in a sliding manner, the other end of the connecting piece extends into the accommodating cavity and is transversely connected with the side die in a sliding manner, the elastic resetting piece is arranged in the accommodating cavity, and the elastic resetting piece is matched with the connecting piece to enable the side die to slide outwards;

The cutting device comprises an air cylinder, a top column and a cutter, the air cylinder is arranged at the bottom of the fixed die, the top column is connected with the air cylinder, the cutter is arranged at the top of the top column, and the top of the cutter can extend into the overflow groove on the fixed die;

the demolding device is arranged at the top of the movable mold and comprises a plurality of ejector rods, demolding channels are arranged on the movable mold, the ejector rods can penetrate through the demolding channels and extend to the mold cavity, circulation channels are connected between the demolding channels, cooling channels are arranged inside the ejector rods, and openings on one sides of the ejector rods enable the cooling channels to be communicated with the circulation channels.

Specifically, a pouring gate is formed in the bottom of the fixed die and communicated to the die cavity, and a heat dissipation channel is arranged on one side of the pouring gate.

As an improvement, be provided with the sealing washer on the ejector pin, the sealing washer is located opening below and sealed the ejector pin with the gap between the drawing of patterns passageway, when the ejector pin descends to the minimum, the sealing washer can not break away from drawing of patterns passageway.

As an improvement, the front part of the sliding block is provided with a positioning block, and the side die is provided with a positioning groove matched and clamped with the positioning block.

As an improvement, the tail end of the guide rail is provided with a baffle plate for preventing the sliding block from disengaging.

As an improvement, when the sliding block and the side die move to the outermost side, the positioning block can be completely separated from the positioning groove.

As an improvement, the elastic reset piece is a pressure spring.

Compared with the prior art, the beneficial effect of this application lies in:

1. the unfolding device is arranged in the side die, so that the side die can be displaced and separated to a certain degree after the sliding block is moved away when the die is opened, the side die can be separated from the overflow groove on the movable die, and the product on the movable die can be conveniently and smoothly demoulded; meanwhile, the side die can be matched with the sliding block, automatic die assembly is realized by using the unfolding device, the structure is simple, and the side die does not need to be additionally fixed.

2. When the expansion device drives the side die to slide, the side die is not completely separated, the product can still be fixed, but a gap is generated between the product and the product in the die cavity, and the waste in the overflow groove can be extruded and cut off by using the cutting device and the side die in a matched mode, so that the product is pretreated, and the processing efficiency is increased.

3. Because the cooling process of molten metal is slower, need cool down the mould, increase the shaping speed of product, consequently combine together ejector pin and cooling channel, the ejector pin can regard as cooling device to use when not carrying out the liftout operation, carries out the circulation liquid cooling to the mould inside, and after the molten metal complete molding, the control ejector pin removes, can realize the drawing of patterns to the product.

Drawings

Fig. 1 is a perspective view of a preferred embodiment according to the present application.

Fig. 2 is a top view of a preferred embodiment according to the present application.

Fig. 3 is a schematic cross-sectional view taken along the direction a-a in fig. 2, according to a preferred embodiment of the present application.

Fig. 4 is a schematic cross-sectional view taken along the direction B-B in fig. 2, according to a preferred embodiment of the present application.

FIG. 5 is a structural view of a movable mold in a mold release state according to a preferred embodiment of the present application.

Fig. 6 is an enlarged view of the cutting apparatus in a cutting state at a in fig. 4 according to a preferred embodiment of the present application.

FIG. 7 is an enlarged view of the top of the carrier rod of FIG. 3 at b, according to a preferred embodiment of the present application.

FIG. 8 is a schematic view of a connection structure of a slide block and a side die on a fixed die according to a preferred embodiment of the application.

In the figure: 1. fixing a mold; 11. a gate; 12. a heat dissipation channel; 2. moving the mold; 21. a demolding channel; 22. a circulation channel; 3. a mold cavity; 31. an overflow trough; 4. side mould; 41. a deployment device; 411. a connecting member; 412. an elastic reset member; 42. an accommodating chamber; 43. positioning a groove; 5. a locking mechanism; 51. an inclined guide post; 52. a guide rail; 521. a baffle plate; 53. a slider; 531. positioning blocks; 6. a cutting device; 61. a cylinder; 62. a top pillar; 63. a cutter; 7. a demolding device; 71. a top rod; 711. a cooling channel; 712. an opening; 713. a seal ring; 72. and (7) pressing a plate.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present application is further described with reference to the accompanying drawings:

as shown in fig. 1 to 8, a preferred embodiment of the present application includes a fixed die 1 and a movable die 2, the fixed die 1 and the movable die 2 are matched in a matched mode, a die cavity 3 is formed at a contact surface between the fixed die 1 and the movable die 2, a locking mechanism 5 and a side die 4 are arranged between the fixed die 1 and the movable die 2, the side die 4 is matched with the locking mechanism 5 to move on two sides of the die cavity 3, the side die 4 is used for closing the side surface of the die cavity 3, and because a product is in an irregular shape, the product cannot be formed at one time only by means of the movable die 2 and the fixed die 1, and the side die 4 is required to assist.

The locking mechanism 5 comprises an inclined guide post 51, a sliding block 53 and a guide rail 52, the guide rail 52 is arranged on the movable die 2, the inclined guide post 51 is arranged on the fixed die 1 in an outward inclined mode, the sliding block 53 is connected with the guide rail 52 in a sliding mode along the horizontal direction, the sliding block 53 is connected with the inclined guide post 51 in a sliding mode along the inclined guide post 51, when the die is opened, the movable die 2 ascends, the sliding block 53 can slide out to the outside through the cooperation of the guide rail 52 and the inclined guide post 51, the side die 4 is unlocked, and the locking mechanism 5 is simple in structure, stable and practical.

A plurality of overflow grooves 31 are formed in the fixed die 1 and the movable die 2 around the die cavity 3, the side die 4 is arranged by matching with the overflow grooves 31, after a product is molded, molten metal in the overflow grooves 31 forms waste materials connected with the product, the waste materials can be clamped between the fixed die 1 and the side die 4 and between the movable die 2 and the side die 4, so that the demolding difficulty is increased, the side die 4 needs to be detached when smooth demolding is needed, the processing difficulty is increased, and the efficiency is reduced, therefore, an unfolding device 41 is arranged in the side die 4, the unfolding device 41 can control the side die 4 to move outwards to unfold and separate from the overflow grooves 31 in the movable die 2, the demolding process is smoother, demolding operation can be directly realized through the demolding device 7, and the side die 4 does not need to be detached; the fixed die 1 is provided with the cutting device 6, when the side die 4 slides, the cutting device 6 can be matched with the side die 4 to cut off the overflow groove 31 on the fixed die 1, the cutting device 6 can pre-cut waste materials in the overflow groove 31 on the fixed die 1, the quantity of the waste materials needing to be cut off subsequently is reduced, and the processing efficiency is improved.

The containing cavity 42 is formed in the side die 4, the unfolding device 41 comprises a connecting piece 411 and an elastic resetting piece 412, one end of the connecting piece 411 is longitudinally slidably connected with the movable die 2, the other end of the connecting piece 411 extends into the containing cavity 42 and is transversely slidably connected with the side die 4, the side die 4 can slide and lift relative to the movable die 2 through the connecting piece 411, the sliding direction is the same as that of the sliding block 53, the side die 4 can conveniently move in a small range along with the sliding block 53, the elastic resetting piece 412 is arranged in the containing cavity 42, the side die 4 slides towards the outer side through the cooperation of the elastic resetting piece 412 and the connecting piece 411, the elastic resetting piece 412 is preferably a high-elasticity pressure spring, and the side die 4 can be pushed through the reaction force of the connecting piece 411 to enable the side die 4 to slide and be separated.

The cutting device 6 comprises an air cylinder 61, a top column 62 and a cutter 63, the air cylinder 61 is arranged at the bottom of the fixed die 1, the top column 62 is connected with the air cylinder 61, the cutter 63 is arranged at the top of the top column 62, the top of the cutter 63 can be designed into a knife edge which is easy to cut, the top column 62 is driven by the air cylinder 61 to ascend, and the top of the cutter 63 extends into the overflow groove 31 in the fixed die 1 to cut off waste materials.

The top of the movable mold 2 is provided with a demolding device 7, the demolding device 7 comprises a plurality of ejector rods 71, a liftable pressing plate 72 is arranged above the fixed mold 1, the tops of the ejector rods 71 are fixedly connected with the pressing plate 72, a demolding channel 21 is arranged on the movable mold 2, and the pressing plate 72 can drive the ejector rods 71 to slide up and down in the demolding channel 21 and extend to the mold cavity 3.

The bottom of the fixed die 1 is provided with a pouring gate 11, the pouring gate 11 is communicated to the die cavity 3, a heat dissipation channel 12 is arranged on one side of the pouring gate 11, and molten metal flowing through the pouring gate 11 is cooled once, so that the forming time is shortened, and the processing efficiency is increased.

The end of the guide rail 52 is provided with a baffle 521 for preventing the sliding block 53 from separating, so that the sliding block 53 is limited, the movable die 2 is ensured to ascend, and the sliding block 53 cannot separate from the movable die 2 in the sliding-out process.

As shown in fig. 5 to 6, when the mold is opened, the movable mold 2 is lifted, the slide block 53 slides out to both sides by the guide of the inclined guide post 51, the side mold 4 also moves to both sides in a small range, and when a gap through which the cutting device 6 can pass is generated between the sliding of the side mold 4 and the product, the cutting device 6 can cut, and at this time, the side mold 4 can still fix the product, and the waste in the overflow groove 31 is squeezed and cut by the cooperation between the side mold 4 and the cutting device 6.

As shown in fig. 7, a circulation channel 22 is connected between the demolding channels 21, a cooling channel 711 is arranged in the top rod 71, an opening 712 on one side of the top rod 71 enables the cooling channel 711 to be communicated with the circulation channel 22, so that cooling water can enter from a part of the top rod 71 and then flows through the cooling channel 711 and the circulation channel 22 to flow out from other top rods 71, so as to realize circulation cooling of the movable mold 2, a sealing ring 713 is arranged on the top rod 71, the sealing ring 713 is positioned below the opening 712 and seals a gap between the top rod 71 and the demolding channel 21, and when the top rod 71 descends to the lowest position, the sealing ring 713 is not separated from the demolding channel 21, so that the cooling water is prevented from flowing out from the demolding channel 21 and affecting the molding of a product.

As shown in fig. 8, the front portion of the sliding block 53 is provided with a positioning block 531, the side mold 4 is provided with a positioning groove 43 for matching with the clamping positioning block 531, the stability of matching between the sliding block 53 and the side mold 4 is improved, the movement of the side mold 4 is prevented, because the side mold 4 and the sliding block 53 are designed in a separated mode, the precision requirement on the sliding block 53 is low, the side mold 4 can be completely closed in the mold cavity 3 only when the mold is closed, the mold is simpler to design and process, meanwhile, the side mold 4 can be detached and replaced independently, the mold is convenient to install and maintain, when the sliding block 53 and the side mold 4 move to the outermost side, the positioning block 531 can be completely separated from the positioning groove 43, the sliding block 53 is ensured not to influence the longitudinal movement of the side mold 4, and the unfolding process of the side mold 4 is not interfered.

The working principle of the die is as follows: the movable die 2, the fixed die 1 and the side die 4 are matched, molten metal is injected from a pouring gate 11, the molten metal fills the die cavity 3, meanwhile, waste residues flow into the overflow groove 31, at the moment, cooling liquid flows into the circulating channel 22 from the cooling channel 711 of the ejector rod 71 for cooling circulation, the movable die 2 is cooled, after cooling molding is finished, the movable die 2 rises, the side die 4 moves along with the sliding block 53, the cutting device 6 operates to cut off waste materials in the overflow groove 31 of the fixed die 1, the movable die 2 continues to rise, the sliding block 53 slides to the outermost side, the side die 4 is completely opened and separated from the overflow groove 31 on the movable die 2, and finally, the ejector rod 71 is driven by the pressing plate 72 to fall, and a product is ejected out of the movable die 2 to complete demolding; after the die cavity 3 and the overflow groove 31 are cleaned, the movable die 2 descends, the slide block 53 slides, the side die 4 is driven to be matched with the movable die 2 and the fixed die 1, and the next molding operation is waited.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides an inverter box forming die, includes cover half and movable mould, the cover half with the cooperation of movable mould compound die, the cover half with the movable mould forms die cavity, its characterized in that in contact surface department: a locking mechanism and a side die are arranged between the fixed die and the movable die, the side die is matched with the locking mechanism to move at two sides of the die cavity, the locking mechanism comprises an inclined guide post, a slide block and a guide rail, the guide rail is arranged on the movable die, the inclined guide post is obliquely arranged on the fixed die towards the outer side, the sliding block is simultaneously connected with the inclined guide post and the guide rail in a sliding way, a plurality of overflow grooves are arranged on the fixed die and the movable die around the die cavity, an unfolding device is arranged in the side die, the unfolding device can control the side die to be separated from the overflow groove on the movable die, the fixed die is provided with a cutting device, when the side die slides and a gap which can be passed by the cutting device is formed between the side die and the die cavity, the cutting device can be matched with the side die to cut off the overflow groove on the fixed die; the side die is internally provided with an accommodating cavity, the unfolding device comprises a connecting piece and an elastic resetting piece, one end of the connecting piece is longitudinally connected with the movable die in a sliding manner, the other end of the connecting piece extends into the accommodating cavity and is transversely connected with the side die in a sliding manner, the elastic resetting piece is arranged in the accommodating cavity, and the elastic resetting piece is matched with the connecting piece to enable the side die to slide outwards;

The cutting device comprises an air cylinder, a top column and a cutter, the air cylinder is arranged at the bottom of the fixed die, the top column is connected with the air cylinder, the cutter is arranged at the top of the top column, and the top of the cutter can extend into the overflow groove in the fixed die;

the demolding device is arranged at the top of the movable mold and comprises a plurality of ejector rods, demolding channels are arranged on the movable mold, the ejector rods can penetrate through the demolding channels and extend to the mold cavity, circulating channels are connected between the demolding channels, cooling channels are arranged inside the ejector rods, and openings in one sides of the ejector rods enable the cooling channels to be communicated with the circulating channels.

2. The inverter box molding die of claim 1, wherein: and a pouring gate is formed at the bottom of the fixed die and communicated to the die cavity, and a heat dissipation channel is arranged on one side of the pouring gate.

3. The inverter box molding die of claim 1, wherein: the ejector rod is provided with a sealing ring, the sealing ring is located below the opening and seals a gap between the ejector rod and the demolding channel, and when the ejector rod descends to the lowest position, the sealing ring cannot be separated from the demolding channel.

4. The inverter box molding die of claim 1, wherein: the slider front portion is provided with the locating piece, be provided with the cooperation joint on the side form the constant head tank of locating piece.

5. The inverter box molding die of claim 1, wherein: the tail end of the guide rail is provided with a baffle for preventing the sliding block from separating.

6. The inverter box body molding die of claim 4, wherein: when the sliding block and the side die move to the outermost side, the positioning block can be completely separated from the positioning groove.

7. The inverter box molding die of claim 1, wherein: the elastic reset piece is a pressure spring.