CN213614031U - Die casting die for end cover of exhaust pipe of shovel engine - Google Patents

Abstract

The utility model provides a shovel quick-witted engine vent-pipe end cover die casting die, including the mould die carrier, the formed part, ejection mechanism, the pouring mechanism, cooling body, cover half ejecting mechanism and slider side take out the mechanism, this mould die carrier includes the mould foot, the movable mould board, fixed die plate and panel, ejection mechanism establishes on the mould foot, the formed part is installed between movable mould board and fixed die plate, cooling body establishes in pouring mechanism and formed part, the pouring mechanism includes the pressure-chamber, the spreader cone, overflow launder and exhaust and heat dissipation mechanism, the formed part includes big mold insert and little mold insert, cover half ejecting mechanism installs at mould die carrier top, including the push rod, the backup pad, preceding push rod, preceding push pedal and front shroud, slider side take out the mechanism and install the right side at the mould die carrier, including oblique guide pillar, the slider, slider. The mold has the advantages that cold insulation is not easy to generate for the molten material, the formed parts are easy to process, the molten material and the formed parts are cooled uniformly, and meanwhile, the mold has the advantages that the side holes and the deep grooves of the casting are easy to demould, the structural arrangement is reasonable, and the mold has better design reference significance.

Description

Die casting die for end cover of exhaust pipe of shovel engine

Technical Field

The utility model relates to a die casting die especially relates to a shovel quick-witted engine exhaust pipe end cover die casting die.

Background

The exhaust pipe end cover part on the shovel engine is an integral part with higher processing requirements, the die-casting forming material of the exhaust pipe end cover part is supposed to adopt AlSi9Cu3 alloy, the material is die-casting aluminum alloy with high work hardening, the material has excellent comprehensive performance, and the exhaust pipe end cover part is widely applied to the production of parts in the automobile industry, such as car bodies, and parts of cars, trucks and the like. Figures 8-10 show the shape of the part, in which several through holes 01 are provided, the diameter of the through holes being the same, all the 10mm long. The central large hole 02 is 78mm in diameter as far as the center. The upper end is provided with a circular ring upper groove 03 with different depths of 6 mm-11 mm. The lower end is also provided with a circular lower groove 04 with the depth of 7 mm-28 mm. At the right side end of the casting, there is a structural side hole 05 with an aperture extending in the middle of 17mm, with a side depth of 22 mm. In the casting, the thickness of the thickest part is 40mm, and the thickness of the thinnest part is 5 mm. The periphery of the central hole of the part is provided with a plurality of reinforcing ribs with the functions of structure enhancement and heat dissipation.

Due to the parts:

firstly, the shape is complex, the flow path of the molten material flow in the die cavity is complex, and cold shut is easy to generate;

the shape of the casting is complex, so that the shape of a formed part for forming the casting is complex, and more places are difficult to process;

the shape is complex, uniform cooling is difficult to obtain, the internal organization structure of the casting is easy to generate difference, the mechanical property is not uniform, and the cooling arrangement of the mold forming part is difficult;

fourthly, a side core-pulling mechanism is required to be arranged to realize the forming and demoulding of the side hole;

the upper end surface and the lower end surface of the casting are both provided with deep grooves, so that the demoulding from the cavity and the core is difficult, and a mechanism is required to be arranged so as to facilitate the demoulding of the upper end surface and the lower end surface of the casting;

therefore, the die-casting and demolding of the parts are difficult.

Disclosure of Invention

An object of the utility model is to provide a shovel quick-witted engine exhaust pipe end cover die casting die to solve exist among the prior art not enough.

The utility model adopts the technical proposal that: the utility model provides a shovel quick-witted engine vent pipe end cover die casting die, includes mould die carrier, formed part, ejection mechanism, pouring mechanism and cooling body, this mould die carrier includes from the bottom up mould foot, movable mould board, fixed die plate and the panel that sets gradually, ejection mechanism establishes on the mould foot, the formed part is installed between movable mould board and fixed die plate, cooling body establishes in pouring mechanism and formed part its characterized in that:

the cooling mechanism comprises a parallel cooling pipeline, an annular water channel, a point type water channel, a spiral water channel, a water well and a slide block water channel;

the pouring mechanism comprises a pressure chamber, a spreader cone, an overflow groove and an exhaust and heat dissipation mechanism, the pressure chamber is arranged on a fixed template and is communicated with a die cavity through a flow passage A1 and a flow passage A2, the periphery of the pressure chamber is wrapped with a cooling jacket, an annular water path is arranged in the cooling jacket, the spreader cone is arranged below the pressure chamber, a small circular pipe of a spreader cone point type water path is arranged in a cooling water hole of the spreader cone, and the small circular pipe is tightly pressed and sealed at the bottom of the spreader cone through a sealing threaded sleeve; the overflow groove is arranged on the parting surface of the movable template and comprises overflow grooves C1-C11, and one ends of the overflow grooves C1-C11 are communicated with the die cavity through runners;

the exhaust and heat dissipation mechanism comprises 3 air dissipation blocks and exhaust grooves Q1-Q6, the 3 air dissipation blocks are respectively positioned at the rear side, the left side and the front side of the die frame, each air dissipation block comprises an upper air dissipation block and a lower air dissipation block, the upper air dissipation block and the lower air dissipation block are respectively and fixedly arranged on the fixed die plate and the movable die plate through screws, and the matching surfaces of the upper air dissipation block and the lower air dissipation block, which are opposite, are matched by organ type corrugated grooves; the exhaust grooves Q1-Q3 are respectively and correspondingly communicated with the other ends of the overflow grooves C1, C2 and C7, one end of the exhaust groove Q4 is simultaneously connected with the other ends of the overflow grooves C3-C6, one end of the exhaust groove Q5 is simultaneously connected with the other ends of the overflow grooves C8 and C9, one end of the exhaust groove Q6 is simultaneously connected with the other ends of the overflow grooves C10 and C11, and the other ends of the exhaust grooves Q4, Q5 and Q6 are respectively and correspondingly connected with the air dissipation blocks on the rear side, the left side and the front side of the die frame of the die;

the forming part comprises a large insert and a small insert embedded in the large insert, a die cavity is formed between the large insert and the small insert, the large insert comprises a core insert and a cavity insert, the core insert is installed in a cavity groove of a movable die plate, the cavity insert is installed in a cavity groove of a fixed die plate, and parallel cooling pipelines are respectively arranged in the core insert and the cavity insert;

the small insert comprises a central insert, a straight-through hole insert, a side hole insert, a lower groove insert and a cavity small insert, the central insert is embedded in the middle of the core insert, a spiral water channel is arranged in the central insert through a cooling core, the spiral water channel provides cooling water for the central insert to be connected and discharged through a core waterway, the side wall of the central insert is provided with the water well, the upper end of the water well extends into the core insert, and the lower end of the water well penetrates through the movable template and is communicated with the core waterway;

the straight-through hole insert is arranged on the core insert and positioned at the periphery of the central insert, and a core small insert point type water path is arranged in the straight-through hole insert;

the side hole insert is arranged on the right side of the cavity insert, and the front end of the side hole insert is inserted into the mold cavity;

the lower groove insert is arranged on the core insert and positioned at the periphery of the central insert, a small circular tube of a point-type water path of the core small insert is arranged in the lower groove insert, and the bottom of the small circular tube is arranged on the movable template;

the small cavity insert is arranged on the cavity insert and positioned at the periphery of the central insert corresponding to the cavity;

the die also comprises a fixed die push-out mechanism and a slide block side-pulling mechanism;

the fixed die ejecting mechanism is arranged at the top of a die frame and comprises an upper push rod, a support plate, a front push rod, a front push plate and a front cover plate, the support plate is arranged on a fixed die plate, the front push plate is arranged at the bottom of the support plate through an upper push plate pull rod and a spring column and is positioned in a groove of the fixed die plate, an upper push plate spring is sleeved outside the spring column, the front cover plate is arranged below the front push plate, the upper ends of the upper push rod and the front push rod are arranged on the front cover plate, the lower end of the upper push rod is slidably arranged in a hole of a cavity insert, and the lower end of the front push rod extends;

the sliding block side-pulling mechanism is arranged on the right side of the die frame and comprises an inclined guide post, a sliding block spring and a wedging block, the sliding block is slidably arranged on a guide chute of the movable die plate, the head of the sliding block is sleeved with the tail end of the side hole insert, the outer side of the bottom end of the tail of the sliding block is connected with the sliding block spring, the sliding block spring is arranged on the outer side wall of the movable die plate, the wedging block compresses the upper end of the tail of the sliding block and is arranged on the fixed die plate through a screw, the inclined guide post is slidably arranged in the inclined guide post hole of the fixed die; and the slide block waterway is installed in the slide block and the side hole insert.

The further technical scheme is as follows: the fixed die ejecting mechanism is internally provided with a fixed die ejecting guide pillar for guiding the movement of the front ejecting plate and the front cover plate, the upper end of the fixed die ejecting guide pillar is arranged on the supporting plate, the bottom end of the fixed die ejecting guide pillar penetrates through the front ejecting plate and the front cover plate and then is inserted into the fixed die plate, and the fixed die ejecting guide pillar is sleeved with a guide sleeve in sliding fit with the fixed die ejecting guide pillar.

The further technical scheme is as follows: the ejection mechanism comprises an ejection combination plate, a reset rod, an ejector rod, a crochet hook and a waste ejector rod; the ejection combination plate is arranged between the left and right mold feet, a support column for supporting the movable mold plate is arranged in the ejection combination plate, and the bottom of the support column is connected with the mold feet through screws; the ejecting combination board comprises a push plate and a cover plate located on the push plate, reset rods are arranged at four corners of the cover plate, the lower ends of the reset rods are connected with the lower surface of the cover plate and are leveled, the upper ends of the reset rods are inserted into the movable template, reset rod springs are sleeved outside the reset rods, the lower ends of the ejector rods, the crochet hooks and the waste ejector rods are all installed on the cover plate, the upper ends of the ejector pins penetrate through the movable template and are inserted into the mold cavity, the upper ends of the crochet hooks are inserted into the mold core insert and are used for hooking the runner waste near the sprue, and the upper ends of the waste ejector rods are.

The further technical scheme is as follows: temperature measuring couples are arranged in the temperature measuring holes of the fixed template and the movable template of the mold frame.

Since the technical scheme is used, the utility model discloses a shovel quick-witted engine exhaust pipe end cover die casting die has following beneficial effect:

1. the molten material is not easy to generate cold shut:

the utility model discloses the mould chooses the edge line of the biggest outer edge profile of up end of foundry goods for use, as the parting line, set up the P1 die joint, combine the shaping needs of foundry goods, during the design feeding, the melting material flows the place of finished product central authorities earlier, then begin to solidify into semi-solid front cold material and flow and discharge in the peripheral overflow launder of foundry goods, avoid appearing the melting material and produce the cold shut or the melting material flows the foundry goods periphery earlier, when the air at the central part of foundry goods is not got rid of, lead to easily filling the defect, cause the hollow scheduling problem in foundry goods center even; the utility model relates to a single-cavity two-plate die casting mould for molding, wherein a casting structure is provided with 2 runners, 11 overflow grooves, 3 single exhaust grooves and 3 tail end gas dissipation blocks to ensure the reliable filling of a die cavity, namely, a die casting machine pours a melt material flow through a pressure chamber under the split flow of a spreader cone, the die cavity is poured through two casting runners A1 and A2, a large exhaust groove is arranged aiming at a thick wall thickness place or an isolated place of a casting, the places where the melt material flow arrives first are considered, the places where the melt material flow finally arrives are provided, therefore, 11 overflow grooves of C1-C11 are arranged at the flowing end of the casting to strengthen the discharging of cold materials at the flowing end, the exhaust of the overflow grooves C1, C1 and C7 are arranged into the form of independent exhaust grooves, the overflow grooves C3-C6 are integrated into one gas dissipation block, the overflow grooves C8 and C9 are integrated into an air dispersion block, the overflow grooves C10 and C11 are integrated into an air dispersion block for exhausting, the components of a single air dispersion block mainly comprise a lower air dispersion block and an upper air dispersion block, and matching surfaces of the lower air dispersion block and the upper air dispersion block are arranged in a mode of matching a bellows type corrugated groove, so that the heat dissipation area is increased while exhausting, die castings produced by final die casting are enabled to obtain better quality and effect, and the phenomenon that air holes are generated on the surface or inside of the die castings formed finally to influence the quality of the die castings is avoided.

2. The formed part is easy to process:

the utility model uses the insert splicing structure, namely the cavity and the core use the big insert, and uses the small insert for the local hard processing area, such as the central insert, the straight hole insert, the side hole insert, the lower groove insert and the cavity small insert; the mosaic structure ensures that each insert can be independently processed, the processing difficulty is low, and the processing precision can be ensured; meanwhile, the damaged part can be replaced independently by the splicing structure, so that the whole die is not scrapped, and the cost is reduced.

3. Cooling uniformly:

the difficult problem of comparison is arranged in the cooling of producing difference, formed part easily for solving foundry goods internal organization structure, the utility model discloses the mould is equipped with cooling body, and it includes parallel cooling tube, annular water route, point type water route, spiral water course, well and slider water route etc. and each cooling tube and water route are established in pouring mechanism and each formed part, guarantee to pour into a mould in the mechanism melting material and each formed part obtain refrigerated uniformity.

4. The side hole is easy to demould:

in order to realize the molding and demolding of the side hole, the slide block side-pulling mechanism is arranged on the right side of the mold of the utility model and comprises an inclined guide pillar, a slide block spring and a wedge block; when the inclined guide post of the slide block side pulling mechanism is opened on the surface of the mold P1, the slide block is driven to drive the side hole insert to move outwards, side core pulling action is implemented, and the slide block sliding position is positioned by the slide block spring.

5. The casting deep groove is easy to demould:

in order to realize deep groove demoulding of the upper end surface of the casting, the fixed die ejecting mechanism is arranged at the top of the mould, and comprises an upper push rod, a supporting plate, a front push rod, a front push plate and a front cover plate; the front push rod pushes the formed casting out of the cavity insert under the pushing of the upper push plate spring, the deep groove on the upper end surface of the casting is demoulded, and the casting is left on the core insert; and the deep groove on the lower end surface of the casting is demoulded by depending on the ejection mechanism, and the ejector rod of the die casting machine pushes the push plate and the ejector rod on the push plate to eject the casting from the core insert, so that the complete demould of the casting is realized.

6. The temperature control is reliable:

the utility model discloses cover half, the movable mould of mould all are provided with the temperature measurement galvanic couple, guarantee that the control by temperature change condition obtains reliable assurance.

7. The utility model discloses die casting die structural arrangement is reasonable, and mechanism design is simple and practical, has better design reference meaning.

The technical characteristics of the die-casting die for the exhaust pipe end cover of the shovel engine of the utility model are further combined with the attached drawings and the embodiment

And (5) description of steps.

Drawings

Fig. 1-4 are schematic structural diagrams of the die-casting die for the exhaust pipe end cover of the shovel engine of the utility model:

FIG. 1 is a top view of a movable mold, FIG. 2 is a bottom view of a stationary mold, FIG. 3 is a sectional view taken along line A-A of FIG. 1 (rotated 90 degrees clockwise), and FIG. 4 is a sectional view taken along line B-B of FIG. 1;

FIG. 5 is a schematic view of a parting plane arrangement;

FIG. 6 is a schematic view of the pouring mechanism;

FIG. 7 is a schematic view of a point-type waterway structure of a core small insert;

fig. 8-10 are schematic structural views of the exhaust pipe end cover:

fig. 8 is a sectional view taken along line C-C of fig. 10, fig. 9 is a sectional view taken along line D-D of fig. 10, and fig. 10 is a front view.

In FIGS. 1-7:

1-pressure chamber, 2-cooling jacket, 3-diffluent cone, 4-diffluent cone point-type waterway, 5-small round tube, 6-support column, 7-ejector rod, 8-central insert, 9-cooling core piece, 10-cover plate, 11-crochet needle, 12-push plate, 13-waste ejector rod, 14-core piece waterway, 15-lower air dispersing block, 16-upper air dispersing block, 17-core insert, 18-cavity insert, 19-upper push rod, 20-upper push rod pull rod, 21-spring column, 22-upper push plate spring, 23-support plate, 24-cavity small insert, 25-panel, 26-fixed template, 27-movable template, 28-mold foot, 29-reset rod, 30-reset rod spring, 31-water well, 32-core small insert point type waterway, 33-slide block waterway, 34-slide block spring, 35-wedge block, 36-slide block, 37-inclined guide column, 38-fixed die push plate guide column, 39-front push rod, 40-front push plate, 41-front cover plate, 42-temperature measuring hole, 43-parallel cooling pipeline, P1-parting surface, A1, A2-runner, G-sprue, C1-C11-overflow groove, Q1-Q6-exhaust groove, IN-water inlet and OUT-water outlet;

in FIGS. 8-10:

01-straight through hole, 02-central big hole, 03-circular upper groove, 04-circular lower groove and 05-side hole.

Detailed Description

Example (b):

a die casting die for an exhaust pipe end cover of a shovel machine engine adopts a single-cavity two-plate layout mode and comprises a die frame, a formed part, an ejection mechanism, a pouring mechanism, a cooling mechanism, a fixed die ejection mechanism and a slider side pumping mechanism, wherein the die frame comprises die feet 28, a movable die plate 27, a fixed die plate 26 and a panel 25 which are sequentially arranged from bottom to top, the die feet are respectively arranged at the left side and the right side of the bottom of the movable die plate, temperature measuring couples are respectively arranged in the fixed die plate of the die frame and a temperature measuring hole 42 of the movable die plate, the ejection mechanism is arranged on the die feet, the formed part is arranged between the movable die plate and the fixed die plate, the cooling mechanism is arranged in the pouring mechanism and the formed part and comprises a parallel cooling pipeline 43, an annular water path, a spiral water path, a water well;

the pouring mechanism comprises a pressure chamber 1, a spreader cone 3, an overflow groove and an exhaust and heat dissipation mechanism, the pressure chamber is arranged on a fixed template and is communicated with a die cavity through runners A1 and A2, the periphery of the pressure chamber is wrapped with a cooling sleeve 2, the annular water path is arranged in the cooling sleeve, the spreader cone is arranged below the pressure chamber, a small circular pipe 5 of a spreader cone point type water path 4 is arranged in a cooling water hole of the spreader cone, and the small circular pipe is tightly pressed and sealed at the bottom of the spreader cone through a sealing thread sleeve; the overflow groove is arranged on the parting surface of the movable template and comprises overflow grooves C1-C11 to enhance the discharge of cold burden at the flowing tail end, and one ends of the overflow grooves C1-C11 are communicated with the die cavity through runners;

the exhaust and heat dissipation mechanism comprises 3 air dissipation blocks and exhaust grooves Q1-Q6, the 3 air dissipation blocks are respectively positioned at the rear side, the left side and the front side of the die frame of the die, each air dissipation block comprises an upper air dissipation block 16 and a lower air dissipation block 15, the upper air dissipation block and the lower air dissipation blocks are respectively and fixedly arranged on the fixed die plate and the movable die plate through screws, and the matching surfaces of the upper air dissipation blocks and the lower air dissipation blocks, which are opposite, are matched through organ-type corrugated grooves and used for assisting the exhaust of the overflow groove and simultaneously increasing the heat dissipation area; one end of each of the exhaust grooves Q1-Q3 is correspondingly communicated with the other end of each of the overflow grooves C1, C2 and C7, namely exhaust of the overflow grooves C1, C2 and C7 is set in an independent exhaust groove mode, one end of the exhaust groove Q4 is simultaneously connected with the other end of each of the overflow grooves C3-C6, namely the overflow grooves C3-C6 are integrated into one air dissipation block for exhausting air, one end of the exhaust groove Q5 is simultaneously connected with the other end of the overflow grooves C8 and C9, namely the overflow grooves C8 and C9 are integrated into one air dissipation block for exhausting air, one end of the exhaust groove Q6 is simultaneously connected with the other end of the overflow grooves C10 and C11, namely the overflow grooves C10 and C11 are integrated into one air dissipation block for exhausting air, and the other ends of the exhaust grooves Q4, Q5 and Q6 are correspondingly connected with the air dissipation blocks on the rear side;

the forming part comprises a large insert and a small insert embedded in the large insert, when the mold is closed, a mold cavity is formed between the large insert and the small insert and is used for forming a product, the large insert comprises a core insert 17 and a cavity insert 18, the core insert is installed in a cavity groove of a movable mold plate, the cavity insert is installed in a cavity groove of a fixed mold plate, and parallel cooling pipelines are respectively arranged in the core insert and the cavity insert;

the small insert comprises a central insert 8, a straight-through hole insert, a side hole insert, a lower groove insert and a cavity small insert 24, the central insert is embedded in the middle of the core insert, a spiral water channel is arranged in the central insert through a cooling core 9 and provides cooling water for the central insert to be connected and disconnected through a core waterway 14, the water well is arranged on the side wall of the central insert, the upper end of the water well extends into the core insert, and the lower end of the water well penetrates through a movable template and is communicated with the core waterway;

the straight-through hole insert is arranged on the core insert and positioned at the periphery of the central insert and used for forming a straight-through hole of a casting, and a point type water path 32 of a small core insert is arranged in the straight-through hole insert;

the side hole insert is arranged on the right side of the cavity insert, and the front end of the side hole insert is inserted into the die cavity for forming a side hole of a casting;

the lower groove insert is arranged on the core insert and positioned at the periphery of the central insert, the lower groove insert is used for forming the lower groove characteristic of a casting, a small round pipe of a point-type water path is arranged in the lower groove insert, and the bottom of the small round pipe is arranged on the movable template;

the small cavity insert is arranged on the cavity insert and positioned at the periphery of the central insert corresponding to the cavity, and the small cavity insert is used for forming the upper groove characteristic of the casting;

the fixed die ejecting mechanism is arranged at the top of a die frame and comprises an upper push rod 19, a support plate 23, a front push rod 39, a front push plate 40 and a front cover plate 41, the support plate is arranged on a fixed die plate, the front push plate is arranged at the bottom of the support plate through an upper push plate pull rod 20 and a spring column 21 and is positioned in a groove of the fixed die plate, an upper push plate spring 22 is sleeved outside the spring column, the front cover plate is arranged below the front push plate, the upper ends of the upper push rod 19 and the front push rod 39 are both arranged on the front cover plate, the lower end of the upper push rod is slidably arranged in a hole of a cavity insert, and the lower end of the front push rod; a guide fixed die push plate guide pillar 38 for a front push plate and a front cover plate to move is arranged in the fixed die ejecting mechanism, the upper end of the fixed die push plate guide pillar is arranged on the supporting plate, the bottom end of the fixed die push plate guide pillar penetrates through the front push plate and the front cover plate and then is inserted into the fixed die plate, and a guide sleeve in sliding fit with the fixed die push plate guide pillar is sleeved outside the fixed die push plate guide pillar;

the sliding block side-pulling mechanism is arranged on the right side of the die frame and comprises an inclined guide post 37, a sliding block 36, a sliding block spring 34 and a wedging block 35, the sliding block is slidably arranged on a guide chute of the movable die plate, the head of the sliding block is sleeved with the tail end of the side hole insert, the outer side of the bottom end of the tail of the sliding block is connected with the sliding block spring, the sliding block spring is arranged on the outer side wall of the movable die plate, the wedging block compresses the upper end of the tail of the sliding block and is arranged on the fixed die plate through a screw, the inclined guide post is slidably arranged in an inclined guide post hole of the fixed die; the slide block waterway is arranged in the slide block and the side hole insert;

the ejection mechanism comprises an ejection combination plate, a reset rod 29, an ejector rod 7, a crochet hook 11 and a waste ejector rod 13; the ejection combination plate is arranged between the left and right mold feet, a support column 6 for supporting the movable mold plate is arranged in the ejection combination plate, and the bottom of the support column is connected with the mold feet through screws; the ejecting combination plate comprises a push plate 12 and a cover plate 10 positioned on the push plate, reset rods are arranged at four corners of the cover plate, the lower ends of the reset rods are connected with the lower surface of the cover plate and are kept flat, the upper ends of the reset rods are inserted into the movable template, reset rod springs 30 are sleeved outside the reset rods, the lower ends of the ejector rods, the crochet hooks and the waste ejector rods are all installed on the cover plate, the upper ends of the ejector pins penetrate through the movable template and are inserted into the mold cavity, the upper ends of the crochet hooks are inserted into the mold core insert and are used for hooking the runner waste near the sprue, and the upper ends of the waste ejector rods.

The utility model discloses a theory of operation:

closing the mold:

the die casting machine enables the molten material flow to flow down through the pressure chamber 1 by splitting of the spreader cone 3, the molten material flow is injected into a die cavity formed by the die cavity insert 18 and the core insert 17 through the flow passages A1 and A2, and in the injection process, the gas is discharged through a pipe organ type exhaust passage formed by the lower gas dispersing block 15 and the upper gas dispersing block 16, so that smooth discharge of the gas is guaranteed, and flash caused by overflow of molten material liquid is prevented;

secondly, after the mold cavity is filled, the cooling mechanism is started circularly to uniformly cool the mold cavity;

demoulding the front mould:

after the casting in the die cavity is cooled and formed, the die is opened at a P1 parting surface, and when the die is opened at a P1 surface, the spring 22 pushes a front die push-out plate (a front push plate 40 and a front cover plate 41) to push out the upper push rod 19 and the front push rod 39, so that the die casting is ensured to be firstly released from the die cavity insert 18; meanwhile, the inclined guide post drives the slide block to drive the side hole insert to move outwards, side core-pulling action is implemented, the slide block slide-out position is positioned by a slide block spring, the side hole is demoulded, and the casting is left on the core insert 17;

fourthly, ejecting:

the ejector rod of the die casting machine pushes the push plate 12 and the ejector rod on the push plate to eject the casting from the core insert 17, so that the casting is completely demoulded;

resetting:

when the mold is reset, the process is opposite to the mold opening process.

Claims (4)

1. The utility model provides a shovel quick-witted engine vent pipe end cover die casting die, includes mould die carrier, formed part, ejection mechanism, pouring mechanism and cooling body, this mould die carrier includes from the bottom up mould foot (28), movable mould board (27), fixed die plate (26) and panel (25) that set gradually, ejection mechanism establishes on the mould foot, the formed part is installed between movable mould board and fixed die plate, its characterized in that is established in pouring mechanism and formed part to the cooling body:

the cooling mechanism comprises a parallel cooling pipeline (43), an annular water channel, a point-type water channel, a spiral water channel, a water well (31) and a slide block water channel (33);

the pouring mechanism comprises a pressure chamber (1), a spreader cone (3), an overflow groove and an exhaust and heat dissipation mechanism, wherein the pressure chamber is arranged on a fixed template and is communicated with a die cavity through a flow passage A1 and a flow passage A2, the periphery of the pressure chamber is wrapped with a cooling sleeve (2), the cooling sleeve is internally provided with the annular water path, the spreader cone is arranged below the pressure chamber, a small circular pipe (5) of a spreader cone point type water path (4) is arranged in a cooling water hole of the spreader cone, and the small circular pipe is tightly pressed and sealed at the bottom of the spreader cone through a sealing thread sleeve; the overflow groove is arranged on the parting surface of the movable template and comprises overflow grooves C1-C11, and one ends of the overflow grooves C1-C11 are communicated with the die cavity through runners;

the exhaust and heat dissipation mechanism comprises 3 air dissipation blocks and exhaust grooves Q1-Q6, the 3 air dissipation blocks are respectively positioned at the rear side, the left side and the front side of the die frame, each air dissipation block comprises an upper air dissipation block (16) and a lower air dissipation block (15), the upper air dissipation block and the lower air dissipation block are respectively and fixedly arranged on the fixed die plate and the movable die plate through screws, and the matching surface of the upper air dissipation block and the lower air dissipation block, which are opposite, is in organ type corrugated groove matching; the exhaust grooves Q1-Q3 are respectively and correspondingly communicated with the other ends of the overflow grooves C1, C2 and C7, one end of the exhaust groove Q4 is simultaneously connected with the other ends of the overflow grooves C3-C6, one end of the exhaust groove Q5 is simultaneously connected with the other ends of the overflow grooves C8 and C9, one end of the exhaust groove Q6 is simultaneously connected with the other ends of the overflow grooves C10 and C11, and the other ends of the exhaust grooves Q4, Q5 and Q6 are respectively and correspondingly connected with the air dissipation blocks on the rear side, the left side and the front side of the die frame of the die;

the forming part comprises a large insert and a small insert embedded in the large insert, a die cavity is formed between the large insert and the small insert, the large insert comprises a core insert (17) and a cavity insert (18), the core insert is installed in a cavity groove of a movable die plate, the cavity insert is installed in a cavity groove of a fixed die plate, and parallel cooling pipelines are respectively arranged in the core insert and the cavity insert;

the small insert comprises a central insert (8), a straight-through hole insert, a side hole insert, a lower groove insert and a cavity small insert (24), the central insert is embedded in the middle of the core insert, a spiral water channel is arranged in the central insert through a cooling core (9), the spiral water channel provides cooling water for the central insert to be accessed and extracted through a core water path (14), the side wall of the central insert is provided with the water well, the upper end of the water well extends into the core insert, and the lower end of the water well penetrates through the movable template and is communicated with the core water path;

the straight-through hole insert is arranged on the core insert and positioned at the periphery of the central insert, and a core small insert point type water path (32) is arranged in the straight-through hole insert;

the side hole insert is arranged on the right side of the cavity insert, and the front end of the side hole insert is inserted into the mold cavity;

the lower groove insert is arranged on the core insert and positioned at the periphery of the central insert, a small circular tube of a core small insert point type water path (32) is arranged in the lower groove insert, and the bottom of the small circular tube is arranged on the movable template;

the small mold cavity insert is arranged on the mold cavity and positioned at the periphery of the central mold cavity corresponding to the mold cavity;

the die also comprises a fixed die push-out mechanism and a slide block side-pulling mechanism;

the fixed die ejecting mechanism is arranged at the top of a die frame and comprises an upper push rod (19), a support plate (23), a front push rod (39), a front push plate (40) and a front cover plate (41), the support plate is arranged on a fixed die plate, the front push plate is arranged at the bottom of the support plate through an upper push plate pull rod (20) and a spring column (21) and is positioned in a groove of the fixed die plate, an upper push plate spring (22) is sleeved outside the spring column, the front cover plate is arranged below the front push plate, the upper ends of the upper push rod and the front push rod are both arranged on the front cover plate, the lower end of the upper push rod is slidably arranged in a hole of a cavity insert, and the lower end of the front push rod;

the slide block side-pulling mechanism is arranged on the right side of the die frame and comprises an inclined guide post (37), a slide block (36), a slide block spring (34) and a wedge block (35), the slide block is slidably arranged on a guide chute of the movable die plate, the head of the slide block is sleeved with the tail end of the side hole insert, the outer side of the bottom end of the tail of the slide block is connected with the slide block spring, the slide block spring is arranged on the outer side wall of the movable die plate, the wedge block compresses the upper end of the tail of the slide block and is arranged on the fixed die plate through a screw, the inclined guide post is slidably arranged in an inclined guide post hole of the fixed die; and the slide block waterway is installed in the slide block and the side hole insert.

2. The shovel machine engine exhaust pipe end cover die casting die of claim 1, characterized in that: the fixed die ejecting mechanism is internally provided with a fixed die ejecting guide pillar (38) for guiding the movement of the front ejecting plate and the front cover plate, the upper end of the fixed die ejecting guide pillar is arranged on the supporting plate, the bottom end of the fixed die ejecting guide pillar penetrates through the front ejecting plate and the front cover plate and then is inserted into the fixed die plate, and the fixed die ejecting guide pillar is sleeved with a guide sleeve in sliding fit with the fixed die ejecting guide pillar.

3. The shovel machine engine exhaust pipe end cover die casting die of claim 2, characterized in that: the ejection mechanism comprises an ejection combination plate, a reset rod (29), an ejector rod (7), a crochet hook (11) and a waste ejector rod (13); the ejection combination plate is arranged between the left and right mold feet, a support column (6) for supporting the movable mold plate is arranged in the ejection combination plate, and the bottom of the support column is connected with the mold feet through screws; the ejecting combination board comprises a push board (12) and a cover board (10) located on the push board, reset rods are arranged at four corners of the cover board, the lower ends of the reset rods are connected with the lower surface of the cover board and are kept flat, the upper ends of the reset rods are inserted into the movable template, reset rod springs (30) are sleeved outside the reset rods, the lower ends of the ejector rods, the crochet hooks and the waste ejector rods are all installed on the cover board, the upper ends of the ejector pins penetrate through the movable template and are inserted into the mold cavity, the upper ends of the crochet hooks are inserted into the mold core insert and are used for hooking the runner waste near the sprue, and the upper ends of the waste.

4. The shovel machine engine exhaust pipe end cover die casting die of claim 1, characterized in that: temperature measuring couples are arranged in temperature measuring holes (42) of a fixed template and a movable template of the mold frame.

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