CN219855751U - Integral injection molding die for turbo-charging air inlet elbow - Google Patents

Abstract

The utility model discloses an integral injection molding die of a turbo-charging air inlet elbow, which comprises: the novel plastic core comprises a front template, a rear template, an air inlet bent pipe forming cavity, a rotary swing arm, an arc-shaped core, a core pulling sliding block and a straight core, wherein an arc-shaped guide rail is arranged on the rear template, the air inlet bent pipe forming cavity is formed between the front template and the rear template, the air inlet bent pipe forming cavity comprises a bent pipe forming cavity, one end of the rotary swing arm is arranged on the arc-shaped guide rail, the other end of the rotary swing arm is connected with a rotating shaft, the rotating shaft can drive the rotary swing arm to move along the arc-shaped guide rail, the arc-shaped core comprises a large end, a small end and an arc-shaped section, the core pulling sliding block is arranged at one end, close to the arc-shaped guide rail, of the rotary swing arm, the end face of the large end of the arc-shaped core is matched with the straight core, and the arc-shaped core is matched with the arc-shaped core to form an injection molding space of the bent pipe in the bent pipe forming cavity. The utility model realizes the integral injection molding of the turbo-charging air inlet bent pipe, reduces the process difficulty, improves the structural reliability and the production qualification rate, and has better technical popularization prospect.

Description

Integral injection molding die for turbo-charging air inlet elbow

Technical Field

The utility model relates to the technical field of molds, in particular to an integral injection molding mold of a turbo-charging air inlet bent pipe.

Background

Along with the white heating of the automobile market competition, the sales price of the whole automobile is continuously reduced, and the compression cost of suppliers is reduced so as to meet the part purchasing cost requirement of a whole automobile factory.

In the past, the turbo-charging air inlet elbow is generally made of AEM and ACM special rubber materials with high price, and is limited by material characteristics and production process, and the integration level of a branch pipe integrated with the air inlet elbow is low, and the post-processing cost is high.

In order to greatly reduce the cost of the turbo-charging air inlet elbow, suppliers try to manufacture the turbo-charging air inlet elbow by using high-temperature nylon plastics, and because the air passage shape of a product is generally composed of two ends and a middle arc section, the existing mold design cannot complete core pulling and demolding of the complex mold core, and cannot meet the integral injection molding and demolding requirements of the turbo-charging air inlet elbow, so that the product technology has to be designed into a disassembling welding mode.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide an integral injection molding die of a turbo-charging air inlet elbow.

The utility model adopts the following technical scheme to realize the aim:

an integral injection molding die for a turbocharger inlet elbow, comprising:

a front template;

a rear template provided with an arc-shaped guide rail;

the air inlet bent pipe forming cavity comprises a bent pipe forming cavity and is formed between the front template and the rear template;

one end of the rotary swing arm is arranged on the arc-shaped guide rail, the other end of the rotary swing arm is connected with the rotating shaft, and the rotating shaft can drive the rotary swing arm to move along the arc-shaped guide rail;

the arc-shaped mold core comprises a large end, a small end and an arc-shaped section, wherein the arc-shaped mold core can be positioned in the bent pipe forming cavity, and the diameter from the large end to the small end of the arc-shaped mold core is gradually reduced;

the core-pulling sliding block is arranged at one end of the rotary swing arm, which is close to the arc-shaped guide rail, and can be matched with the large end face of the arc-shaped core, the core-pulling sliding block can be separated from the large end face of the arc-shaped core along with the opening of the front template and the rear template, and is attached to the large end face of the arc-shaped core along with the closing of the front template and the rear template;

and the straight core is matched with the small end of the arc-shaped core, and forms an injection molding space of the bent pipe in the bent pipe forming cavity.

Further, the device also comprises an elbow core pulling mechanism arranged at one end of the rotary swing arm, which is close to the arc-shaped guide rail, wherein the elbow core pulling mechanism comprises a chute arranged on the rotary swing arm, a core pulling sliding block is arranged in the chute in a sliding manner, a guide hole is formed in the core pulling sliding block, a guide block is arranged in the guide hole in a sliding manner, one end of the guide block extends out of the guide hole to be connected with the rotary swing arm, and the other end of the guide block is connected with the end face of the large end of the arc-shaped core.

Further, the front template is provided with an inclined guide pillar, the inclined guide pillar inclines towards the end face far away from the large end of the arc-shaped core along the direction of the chute, the core-pulling sliding block is provided with an inclined hole matched with the inclined guide pillar, the inclined hole is consistent with the inclined direction of the inclined guide pillar, and the guide block is provided with a first kidney-shaped hole communicated with the inclined hole.

Further, the mounting hole has been seted up to the one end that the slider of loosing core is close to the big end terminal surface of arc core, install first spring in the mounting hole, the mounting hole is extended to the one end of first spring, and can contact or separate with the terminal surface of the big end of arc core.

Further, the diameter ratio of the large end to the small end of the arc-shaped mold core is more than or equal to 1.5.

Further, the air inlet bent pipe forming cavity further comprises a branch pipe forming cavity positioned on the front template, a front die seat plate is arranged on one side, far away from the rear template, of the front template, and a branch pipe core pulling mechanism is arranged on the front die seat plate.

Further, the branch pipe core pulling mechanism comprises a branch pipe core pulling sliding block seat arranged on the front die seat plate and a branch pipe core pulling guide block arranged on the front die plate, wherein the branch pipe core pulling guide block is positioned on one side of a branch pipe forming cavity, the branch pipe core pulling sliding block seat is provided with an inner core pulling sliding block in a branch pipe, the branch pipe core pulling guide block is provided with an outer core pulling sliding block in a branch pipe, a through hole is formed in the outer core pulling sliding block in the branch pipe, and an injection molding space of the branch pipe is formed in the branch pipe forming cavity between the inner core pulling sliding block in the branch pipe and the outer core pulling sliding block in the branch pipe.

Further, the in-branch core-pulling slide block comprises an in-branch core-pulling upper slide block and an in-branch core-pulling lower slide block, the in-branch core-pulling upper slide block is connected with the in-branch core-pulling lower slide block through a transition part, the in-branch core-pulling upper slide block and the in-branch core-pulling lower slide block are all in cylindrical arrangement, the diameter of the in-branch core-pulling upper slide block is larger than that of the in-branch core-pulling lower slide block, the diameter of the in-branch core-pulling upper slide block is identical to that of the through hole, a second kidney-shaped hole is formed in the in-branch core-pulling upper slide block, a round pin which is in sliding fit with the second kidney-shaped hole is arranged on the inner wall of the through hole, an injection molding space of the branch pipe is formed in a branch pipe forming cavity between the in-branch core-pulling lower slide block, the transition part and the out-branch core-pulling lower slide block can be matched with the cambered surface on the cambered section.

Further, a first T-shaped block is arranged on one side of the outer core-pulling sliding block of the branch pipe, a first T-shaped groove is formed in the core-pulling guide block of the branch pipe, the first T-shaped block is in sliding fit with the first T-shaped groove, a second T-shaped block is arranged on the inner core-pulling sliding block of the branch pipe, a second T-shaped groove is formed in the core-pulling sliding block seat of the branch pipe, and the second T-shaped block is in sliding fit with the second T-shaped groove.

Further, one side of the front die holder plate, which is close to the front die plate, is provided with a telescopic rod, a second spring is sleeved on the telescopic rod, one end of the second spring is connected with the front die holder plate, and the other end of the second spring can be contacted with or separated from the front die plate.

Compared with the prior art, the utility model provides the integrated injection molding die for the turbo-charging air inlet bent pipe, which has the following beneficial effects:

according to the utility model, the front template and the rear template are opened, the core-pulling sliding block moves to be separated from the large end face of the arc-shaped core, the rotating swing arm is driven by the rotating shaft to move along the arc-shaped guide rail, the arc-shaped core is moved out of the bent pipe forming cavity, and meanwhile, the straight-moving core is moved, so that the rotary core-pulling demolding of the bent pipe can be realized, the integral injection molding and demolding requirements of the turbo-charging air-inlet bent pipe are met, compared with the traditional disassembling welding mode, the branch pipe has the advantages of high integration level, no post-processing and low manufacturing cost, and the risk of welding quality (such as welding face buckling deformation, welding flash, cold welding, air sealing leakage and the like) caused by disassembling welding is avoided, the process difficulty is reduced, the quality control cost is low, the structural reliability and the production qualification rate are improved, and the technical popularization prospect is good.

Drawings

FIG. 1 is a schematic view of the overall structure of a rear form of the present utility model;

FIG. 2 is a schematic view of the structure of the front form of the present utility model;

FIG. 3 is a schematic view of the mounting structure of the spindle, gear and linear rack of the present utility model;

FIG. 4 is a schematic view of the structure of the air inlet elbow of the present utility model after injection molding;

FIG. 5 is a schematic view of the internal structure of the air intake elbow of the present utility model after injection molding;

FIG. 6 is a schematic view of the structure of the intake elbow of the present utility model prior to injection molding;

FIG. 7 is a schematic view of the bend core pulling mechanism of the present utility model;

FIG. 8 is a schematic view of the structure of the intake elbow of the present utility model after stripping;

FIG. 9 is a schematic view of the internal structure of the intake elbow of the present utility model when the core is pulled;

FIG. 10 is an enlarged schematic view of the structure at A in FIG. 9;

FIG. 11 is a schematic view of the internal structure of the branch pipe of the present utility model in a perspective view when the branch pipe is released from the mold;

FIG. 12 is a schematic view showing the internal structure of the branch pipe of the present utility model when the branch pipe is released from the mold

FIG. 13 is a schematic view of the internal structure of the present utility model when the core is pulled;

FIG. 14 is an enlarged schematic view of the structure at B in FIG. 13;

FIG. 15 is a schematic view of the overall structure of the branch pipe of the present utility model when it is released from the mold.

The mark in the figure is 1, the front template; 2. a rear template; 3. an air inlet bent pipe forming cavity; 4. an arc-shaped core; 41. a large end; 42. a small end; 43. an arc section; 5. a straight core; 6. a bent pipe core pulling mechanism; 61. a chute; 62. a core-pulling sliding block; 63. a guide hole; 64. a guide block; 65. a first kidney-shaped aperture; 66. inclined holes; 67. oblique guide posts; 68. a first spring; 69. a mounting hole; 7. a front mold base plate; 8. a branch pipe core pulling mechanism; 81. a core-pulling slide block outside the branch pipe; 82. core-pulling sliding blocks in the branch pipes; 821. core-pulling upper sliding blocks in the branch pipes; 822. a core-pulling lower slide block in the branch pipe; 823. a transition section; 83. branch pipe core pulling guide blocks; 84. a branch pipe core-pulling slide block seat; 85. a through hole; 86. a second kidney-shaped aperture; 87. a round pin; 88. a first T-block; 89. a first T-shaped slot; 90. a second T-block; 91. a second T-shaped slot; 9. a guide hole; 10. rotating the swing arm; 11. a rotating shaft; 12. a gear; 13. a linear rack; 14. a first power component; 15. an arc-shaped guide rail; 16. a straight slide block; 17. a second power component; 18. a second spring; 19. forming a cavity of the bent pipe; 20. a branch pipe forming cavity; 21. an air inlet elbow; 22. bending the pipe; 23. a branch pipe; 24. a guide groove; 25. a telescopic rod; 26. and (5) a guide post.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiment of the utility model provides an integral injection molding die for a turbo-charging air inlet elbow, which comprises the following components with reference to fig. 1 and 2: the front template 1, the rear template 2, the air inlet bent pipe forming cavity 3, the rotary swing arm 10, the arc-shaped core 4, the core pulling sliding block 62 and the straight core 5, wherein the rear template is provided with an arc-shaped guide rail 15, the air inlet bent pipe forming cavity 3 comprises a bent pipe forming cavity 19 formed between the front template 1 and the rear template 2, one end of the rotary swing arm 10 is arranged on the arc-shaped guide rail 15, the other end of the rotary swing arm is connected with the rotating shaft 11, the rotating shaft 11 can drive the rotary swing arm 10 to move along the arc-shaped guide rail 15, the bent pipe forming cavity 19 is positioned on one side of the arc-shaped guide rail 15, the rotary swing arm 10 can be close to or far away from the bent pipe forming cavity 19, the axial lead of the arc-shaped guide rail 15 coincides with the axial lead of the rotating shaft 11, the arc-shaped core 4 comprises a large end 41, a small end 42 and an arc-shaped section 43, the arc-shaped core 4 can be positioned in the bent pipe forming cavity 19, the diameter from the large end 41 to the small end 42 of the arc-shaped core 4 gradually decreases, the delayed core-pulling rotary structure can be designed better, the core-pulling sliding block 62 is arranged at one end of the rotary swing arm 10, which is close to the arc-shaped guide rail 15, and can be matched with the end face of the large end 41 of the arc-shaped core 4, the core-pulling sliding block 62 can be separated from the end face of the large end 41 of the arc-shaped core 4 along with the opening of the front template 1 and the rear template 2, the arc-shaped core 4 can be positioned in the arc-shaped core 19 along with the closing of the front template 1 and the rear template 2, when the rotary swing arm 10 is close to the elbow-shaped cavity 19, the arc-shaped core 4 is also far away from the elbow-shaped cavity 19 when the rotary swing arm 10 is far away from the elbow-shaped cavity 19, the straight core 5 is matched with the small end 42 of the arc-shaped core 4, and an injection molding space of the elbow 22 is formed in the elbow-shaped cavity 19.

Specifically, the intake elbow 21 includes an elbow 22 and a branch pipe 23; the front die base plate 7 is mounted on the front die plate 1 through the die locking force of the device, guide holes 9 which can be communicated are formed in four corners of the front die plate 1 and the rear die plate 2, guide posts 26 are arranged in corresponding four corners of the front die base plate 7, and the guide posts 26 penetrate through the guide holes 9 of the front die plate 1 and then are inserted into the guide holes 9 of the rear die plate 2, so that die assembly of the front die plate 1 and the rear die plate 2 is completed.

Referring to fig. 1 and 3, a gear 12 is installed on a rotating shaft 11, the gear 12 is installed at the lower end of the rotating shaft 11, a rotary swing arm 10 is installed at the upper end of the rotating shaft 11, the gear 12 is meshed with a linear rack 13, the linear rack 13 is connected with a piston rod of a first power component 14, the first power component 14 is installed on a rear template 2, and the first power component 14 is a hydraulic cylinder, a cylinder or a linear motor, which is the prior art, and not described in detail herein, the first power component 14 can reciprocate to provide power for rotary demolding of an arc-shaped core 4.

After the front template 1 and the rear template 2 are opened, the first power component 14 is started, the first power component 14 drives the linear rack 13 to move, so that the gear 12 is driven to rotate, the gear 12 drives the rotary swing arm 10 to move along the arc-shaped guide rail 15 through the rotating shaft 11, and further drives the pipe bending core pulling mechanism 6 and the arc-shaped core 4 to be far away from the pipe bending forming cavity 19, and the rotary demoulding action of the pipe bending 22 is realized.

Referring to fig. 1, a guide groove 24 is formed in a rear mold plate 2, a straight slide block 16 is slidably arranged in the guide groove 24, one end of the straight slide block 16 is connected with a straight mold core 5, the other end of the straight slide block 16 is connected with a piston rod of a second power component 17, the second power component 17 is installed on the rear mold plate 2, the second power component 17 is a hydraulic cylinder, a cylinder or a linear motor, the prior art is omitted, and the second power component 17 can do reciprocating motion to provide power for straight mold stripping of the straight mold core 5.

After the front template 1 and the rear template 2 are opened, the second power part 17 is started, and the second power part 17 drives the straight slide block 16 to slide along the guide groove 24 in a straight way, so that the straight core 5 is driven to be far away from the bent pipe forming cavity 19, and the straight demoulding action of the bent pipe 22 is realized.

Referring to fig. 4 to 9, in the present embodiment, the device further includes a bent pipe core-pulling mechanism 6 mounted on one end of the rotary swing arm 10 near the arc guide rail 15, by setting the bent pipe core-pulling mechanism 6, firstly, the device has a sealing function to prevent leakage of injection molding materials and waste, secondly, when the front mold plate 1 and the rear mold plate 2 are opened, separation of the arc-shaped mold core 4 and the bent pipe core-pulling mechanism 6 is realized to facilitate subsequent rotary demolding, the bent pipe core-pulling mechanism 6 includes a sliding groove 61 opened on the rotary swing arm 10, a core-pulling slide block 62 is slidingly arranged in the sliding groove 61, firstly, the core-pulling slide block 62 has a sealing function to prevent leakage of injection molding materials and waste, secondly, when the front mold plate 1 and the rear mold plate 2 are opened, separation of a joint surface of the arc-shaped mold core 4 and the core-pulling slide block 62 (i.e. joint of an end surface of the core-pulling slide block 62 and a large end 41 of the arc-shaped mold core 4) is realized to facilitate subsequent rotary demolding, the end face of the core-pulling slide block 62 has the same diameter as the end face of the big end 41 of the arc-shaped core 4, the core-pulling slide block 62 can move linearly along the sliding groove 61, the core-pulling slide block 62 is provided with a guide hole 63, the guide hole 63 penetrates through the core-pulling slide block 62 and is parallel to the axis of the sliding groove 61, a guide block 64 is slidably arranged in the guide hole 63 and plays a guiding role, the core-pulling slide block 62 is sleeved on the guide block 64 and can reciprocate in the sliding groove 61 along the guide block 64, one end of the guide block 64 extends out of the guide hole 63 to be connected with the rotary swing arm 10, the other end of the guide block 64 is connected with the end face of the big end 41 of the arc-shaped core 4, in particular, the length of the end face of the guide block 64 is smaller than the end face of the big end 41 of the arc-shaped core 4, the end face of the guide block 64 does not exceed the end face of the big end 41 of the arc-shaped core 4, the forming of the bent pipe 22 is prevented from being influenced, and the guide block 64 is prevented from interfering with the inner wall surface of the bent pipe 22 when the arc-shaped core 4 rotates along with the rotary swing arm 10.

The shape of the guide hole 63 is the same as that of the guide block 64, and the guide hole 63 may be rectangular, square, triangular, pentagonal, hexagonal or circular, which may be determined according to practical situations, and in this embodiment, the shape of the guide hole 63 and the guide block 64 is rectangular.

Referring to fig. 4 to 9, in this embodiment, the front mold plate 1 is provided with an inclined guide pillar 67, the inclined guide pillar 67 is inclined along the direction of the chute 61 toward the end surface far away from the large end 41 of the arc-shaped core 4, the core pulling slide block 62 is provided with an inclined hole 66 matched with the inclined guide pillar 67, the inclined hole 66 is consistent with the inclined direction of the inclined guide pillar 67, and the guide block 64 is provided with a first kidney-shaped hole 65 communicated with the inclined hole 66, so that the delay core pulling of the arc-shaped core 4 is realized, and the diameter of the inclined guide pillar 67 is smaller than or equal to the circular arc diameter of the first kidney-shaped hole 65.

Specifically, referring to fig. 10, the orthographic projection of the inclined guide post 67 on the sliding groove 61 is parallel to the axis of the sliding groove 61, when the front template 1 and the rear template 2 are closed, the inclined guide post 67 passes through the inclined hole 66 and moves in the first kidney-shaped hole 65, and the core pulling slide block 62 is shifted to move along the guide block 64 in the sliding groove 61 towards the end face of the large end 41 of the arc-shaped core 4, so that the core pulling slide block 62 is attached to the end face of the large end 41 of the arc-shaped core 4; when the front template 1 and the rear template 2 are opened, the inclined guide pillar 67 toggles the core-pulling slide block 62 to move along the guide block 64 in the chute 61 towards the end face far away from the large end 41 of the arc-shaped core 4, so that the core-pulling slide block 62 can be separated from the end face of the large end 41 of the arc-shaped core 4, until the core-pulling slide block 62 cannot move again when one side of the end face far away from the large end 41 of the core-pulling slide block 62 is attached to the side wall of the chute 61, at the moment, the front template 1 and the rear template 2 are completely opened, the moving distance of the core-pulling slide block 62 is the distance between one side of the core-pulling slide block 62 close to the end face of the large end 41 of the arc-shaped core 4 and the end face of the large end 41 of the arc-shaped core 4, the moving distance linear length is marked as L, the time delay core-pulling distance of the core-pulling slide block 62 is marked as S, and at the time, when the guide block 64 connected with the large end 41 of the arc-shaped core 4 is prevented from rotating along with the rotating swing arm 10, the guide block 64 interferes with the inner wall surface of the elbow 22, and the arc-shaped core 4 cannot be completely and smoothly rotated out from the inner wall surface of the elbow 22.

When the front template 1 and the rear template 2 are opened, the core-pulling slide block 62 linearly moves in the sliding groove 61 along the guide block 64 by a distance L, at the moment, the first power component 14 receives a demolding signal fed back by the device, the first power component 14 is started, the first power component 14 drives the linear rack 13 to move so as to drive the gear 12 to rotate, the gear 12 drives the rotary swing arm 10 to move along the arc-shaped guide rail 15 through the rotating shaft 11, and then drives the guide block 64 on the rotary swing arm 10 to move, the guide block 64 drives the arc-shaped core 4 to move, after the rotary travel reaches the distance L, the end face of the core-pulling slide block 62 is contacted with the end face of the large end 41 of the arc-shaped core 4 again, and then the core-pulling slide block 62 and the arc-shaped core 4 together do circular motion away from the bent pipe forming cavity 19 along the arc-shaped guide rail 15 until the rotary demolding action of the bent pipe 22 is completed.

Referring to fig. 5, in this embodiment, a mounting hole 69 is formed at an end of the core-pulling slider 62 near the end face of the large end 41 of the arc-shaped core 4, a first spring 68 is installed in the mounting hole 69, and one end of the first spring 68 extends out of the mounting hole 69 and can contact with or separate from the end face of the large end 41 of the arc-shaped core 4.

The number of the first springs 68 may be set according to practical situations, and in this embodiment, the number of the first springs 68 is 2, and the first springs 68 are respectively installed in the installation holes 69 at both sides of the guide hole 63.

In order to prevent the end face of the core-pulling slide block 62 from being bonded with the end face of the large end 41 of the arc-shaped core 4 due to bonding of the bonding face caused by overtightening of the die assembly, the delayed core-pulling function of the core-pulling slide block 62 and the arc-shaped core 4 is invalid (namely, no delayed core-pulling distance L) and finally the bent pipe 22 is damaged in demolding, therefore, through the arrangement of the first spring 68, when the front die plate 1 and the rear die plate 2 are closed, the first spring 68 is applied with pre-pressing force, the end face of the core-pulling slide block 62 is bonded with the end face of the large end 41 of the arc-shaped core 4, the first spring 68 is contacted with the end face of the large end 41 of the arc-shaped core 4, the pre-pressing force acting on the first spring 68 is removed when the front die plate 1 and the rear die plate 2 are opened, the core-pulling slide block 62 moves away from the end face direction of the large end 41 of the arc-shaped core 4 under the elastic force of the first spring 68, the bonding face of the core-pulling slide block 62 and the arc-shaped core 4 can be separated by a small distance, the reliability of the delayed core-pulling action between the core-pulling slide block 62 and the arc-pulling slide block 4 is ensured, and the end face of the core-pulling slide block 67 is pushed by the slide block 62 is separated from the large end face of the arc-shaped core 4 along the guide block 64, and the slide block 62 is separated from the large end face of the large end 41, and the end face of the arc-shaped core 4 is separated from the end 41.

Referring to fig. 1 and 2, in this embodiment, the diameter ratio of the large end 41 to the small end 42 of the arc-shaped core 4 is greater than or equal to 1.5, so that the delayed core-pulling rotary structure can be designed better, and the arc-shaped core 4 can be smoothly rotated out from the inner wall surface of the elbow 22 when being rotationally demolded.

Specifically, the end face of the small end 42 of the arc-shaped core 4 can be fitted with the end face of the straight core 5, and the end face diameter of the small end 42 of the arc-shaped core 4 is smaller than or equal to the end face diameter of the straight core 5.

Referring to fig. 2 and 11, in this embodiment, the air inlet elbow molding cavity 3 further includes a branch pipe molding cavity 20 located on the front mold plate 1, a front mold base plate 7 is installed on a side, away from the rear mold plate 2, of the front mold plate 1, a branch pipe core-pulling mechanism 8 is installed on the front mold base plate 7, an injection molding space of a branch pipe 23 is formed between the branch pipe core-pulling mechanism 8 and the branch pipe molding cavity 20, through the arrangement of the branch pipe core-pulling mechanism 8, firstly, a sealing effect is achieved, leakage of injection molding materials is prevented, waste is caused, and secondly, when the front mold plate 1 and the rear mold plate 2 are opened, separation of the branch pipe core-pulling mechanism 8 and the branch pipe 23 is achieved, and inverted core pulling of the branch pipe 23 is achieved.

Referring to fig. 11 and 12, in this embodiment, the core-pulling mechanism 8 includes a core-pulling slider seat 84 mounted on the front mold plate 7 and a core-pulling guide block 83 mounted on the front mold plate 1, the core-pulling guide block 83 is located at one side of the forming cavity 20, an inner core-pulling slider 82 is slidably mounted on the core-pulling slider seat 84, an outer core-pulling slider 81 is slidably mounted on the core-pulling guide block 83, a through hole 85 is formed in the outer core-pulling slider 81, the inner core-pulling slider 82 is slidably disposed in the through hole 85, an injection molding space of the branch 23 is formed in the forming cavity 20 between the inner core-pulling slider 82 and the outer core-pulling slider 81, and the inner core-pulling lower slider 822 can be matched with an arc surface on the arc section 43, and the branch 23 is formed on the arc section 43 of the elbow 22.

Referring to fig. 13 and 14, in this embodiment, the in-leg core-pulling slide 82 includes an in-leg core-pulling upper slide 821 and an in-leg core-pulling lower slide 822, the in-leg core-pulling upper slide 821 and the in-leg core-pulling lower slide 822 are connected through a transition portion 823, the in-leg core-pulling upper slide 821 and the in-leg core-pulling lower slide 822 are both cylindrically disposed, the diameter of the in-leg core-pulling upper slide 821 is larger than that of the in-leg core-pulling lower slide 822, the diameter of the in-leg core-pulling upper slide 821 is the same as that of the through hole 85, a second kidney-shaped hole 86 is formed in the in-leg core-pulling upper slide 821, a circular pin 87 slidably engaged with the second kidney-shaped hole 86 is provided on the inner wall of the through hole 85, the circular pin 87 penetrates through the second kidney-shaped hole 86 and is connected with the inner wall of the through hole 85, the diameter of the circular pin 87 is smaller than or equal to the circular arc diameter of the second kidney-shaped hole 86, an injection molding space of the branch 23 is formed in the branch molding cavity 20 between the in-leg inner core-pulling lower slide 822, the transition portion 823 and the out-leg core-pulling slide 81, and the in-leg core-pulling upper slide 822 is in contact with the arc-shaped section 43, and the arc-shaped surface is sealed.

Referring to fig. 11 to 15, in this embodiment, a first T-shaped block 88 is disposed on one side of the outer core-pulling slide block 81 of the branch pipe, a first T-shaped groove 89 is disposed on the outer core-pulling guide block 83 of the branch pipe, the first T-shaped block 88 is slidably matched with the first T-shaped groove 89, a second T-shaped block 90 is disposed on the inner core-pulling slide block 82 of the branch pipe, a second T-shaped groove 91 is disposed on the inner core-pulling slide block seat 84 of the branch pipe, and the second T-shaped block 90 is slidably matched with the second T-shaped groove 91.

Specifically, the second T-shaped block 90 is disposed on top of the in-manifold core-pulling slider 82, the second T-shaped groove 91 is disposed on the bottom end surface of the in-manifold core-pulling slider seat 84, and the second T-shaped block 90 does not fall out of the second T-shaped groove 91.

Referring to fig. 11 to 15, in the present embodiment, the first T-shaped groove 89, the first T-shaped block 88, the through hole 85, the in-manifold core-pulling slider 82, the second kidney-shaped hole 86, and the manifold 23 have the same inclination direction and inclination angle, and the inclination directions between the second T-shaped groove 91, the second T-shaped block 90, and the in-manifold core-pulling slider 82 may be perpendicular or not perpendicular, and it is specifically necessary to confirm according to the opening distance between the front die plate 1 and the front die holder plate 7 and the inclination angle of the manifold 23.

Referring to fig. 14, when the front die plate 1 and the front die base plate 7 are locked by the locking force, the outer core-pulling slide block 81 of the branch pipe slides along the first T-shaped groove 89 on the core-pulling guide block 83 of the branch pipe through the first T-shaped block 88, the inner core-pulling slide block 82 of the branch pipe slides along the second T-shaped groove 91 on the core-pulling slide block seat 84 of the branch pipe through the second T-shaped block 90, and when the outer core-pulling slide block 81 of the branch pipe cannot move further downwards (i.e. the first T-shaped block 88 reaches the bottommost part of the first T-shaped groove 89, at the moment, the outer core-pulling slide block 81 of the branch pipe is not contacted with the cambered surface on the cambered section 43), the inner core-pulling slide block 82 of the branch pipe continues to move downwards in the through hole 85 for a distance through the sliding fit of the second waist-shaped hole 86 and the circular pin 87 is matched with the cambered surface on the cambered section 43, at the moment, the circular pin 87 is positioned at the top of the second waist-shaped hole 86; after the mold locking force between the front mold plate 1 and the front mold plate 7 is removed, the front mold plate 7 is pulled out along the guide hole 9 through the guide pillar 26, thereby driving the branch pipe core-pulling slide block seat 84 to move upwards, the branch pipe inner core-pulling slide block 82 slides along the second T-shaped groove 91 on the branch pipe core-pulling slide block seat 84 through the second T-shaped block 90, and simultaneously the branch pipe inner core-pulling slide block 82 moves upwards, when the round pin 87 moves to the bottom of the second kidney-shaped hole 86, the distance from the top of the second kidney-shaped hole 86 to the bottom of the round pin 87 is recorded as s, the time delay core-pulling distance of the branch pipe outer core-pulling slide block 81 is recorded as s, at this moment, the clearance distance between the inner wall formed by the transition part and the outer wall of the branch pipe inner core-pulling slide block 82 is recorded as h, the part (namely the flange part) formed by the branch pipe 23 is plastically deformed under the extrusion action of the branch pipe outer core-pulling slide block 81 along the pipe diameter direction, the reverse buckle of the flange part is eliminated, and under the action of the round pin 87, the branch pipe outer core-pulling slide block 81 can be smoothly pulled from the flange part of the branch pipe outer core-pulling slide block 81 to the whole core-pulling slide block 81 through the first T-shaped groove 83 along the T-shaped groove 82 and the first T-shaped slide block 83 along the whole slide block 82 and the T-shaped groove 82 along the T-shaped groove 82, and the whole action of the T-shaped slide block 83 is completed simultaneously along the T-shaped groove 82 on the first T-shaped guide groove 82.

Referring to fig. 11 to 15, in the present embodiment, a telescopic rod 25 is disposed on a side of the front die plate 7 near the front die plate 1, a second spring 18 is sleeved on the telescopic rod 25, one end of the second spring 18 is connected with the front die plate 7, and the other end of the second spring 18 can contact with or separate from the front die plate 1.

The number of the second springs 18 can be set according to actual conditions, in the embodiment, the number of the second springs 18 is 4, the second springs are positioned at two sides of the bottom of the front die base plate 7, a placing groove for placing a telescopic rod 25 is arranged on the front die plate 1, when the front die plate 1 and the front die base plate 7 are locked by die locking force, the telescopic rod 25 stretches into the placing groove, the second springs 18 can be contacted with the front die plate 1 and compressed, and a supporting column is further arranged on the front die plate 1 to avoid failure caused by too tight compression of the second springs 18; when the clamping force between the front template 1 and the front die base plate 7 is removed, the front die base plate 7 and the front template 1 can be automatically sprung out under the action of the elastic force of the second spring 18, so that the core-pulling sliding block 82 in the branch pipe is pulled out a certain distance in advance, the core-pulling and demolding actions of the subsequent branch pipe 23 are ensured to be smoother, the front die base plate 7 is pulled out along the guide hole 9 through the guide post 26, and the second spring 18 is separated from the front template 1.

Working principle: when the die is used, the front die plate 1 and the rear die plate 2 are clamped, the front die plate 1 and the front die seat plate 7 are locked by the die locking force, injection molding is carried out, after injection molding is finished, the die locking force between the front die plate 1 and the front die seat plate 7 is removed, the front die seat plate 7 and the front die plate 1 can be automatically sprung out under the action of the elastic force of the second spring 18, so that the in-branch core-pulling sliding block 82 is pulled out a certain distance in advance, then the front die seat plate 7 is pulled out along the guide hole 9 through the guide pillar 26, the in-branch core-pulling sliding block seat 84 is driven to move upwards, the in-branch core-pulling sliding block 82 slides along the second T-shaped groove 91 on the in-branch core-pulling sliding block seat 84 through the second T-shaped block 90, meanwhile, the out-branch outer core-pulling sliding block 81 is driven to move along the first T-shaped groove 89 on the branch guide block 83 after the moving distance of the round pin 87 is reached, and meanwhile, the in-branch core-pulling sliding block 82 slides along the second T-shaped groove 91 on the in-branch core-pulling sliding block seat 84 until the whole core-pulling action of the branch 23 is completed;

then when the front template 1 and the rear template 2 are opened, the pre-pressure acting on the first spring 68 is removed, the core-pulling slide block 62 moves towards the direction away from the end face of the large end 41 of the arc-shaped core 4 under the action of the elastic force of the first spring 68, so that the joint face of the core-pulling slide block 62 and the arc-shaped core 4 can be separated by a small distance, the inclined guide post 67 stirs the core-pulling slide block 62 to move along the guide block 64 towards the end face away from the large end 41 of the arc-shaped core 4 along the guide block 64, at the moment, the first power part 14 receives a demoulding signal fed back by the device, the first power part 14 is started, the first power part 14 drives the linear rack 13 to move, so as to drive the gear 12 to rotate, the rotary swing arm 10 to move along the arc-shaped guide rail 15 through the rotary shaft 11, so as to drive the guide block 64 on the rotary swing arm 10 to move, the guide block 64 drives the arc-shaped core 4, and after the rotary stroke reaches the linear distance L, the end face of the core-pulling slide block 62 is contacted with the end face of the large end face 41 of the arc-shaped core 4 again, and then the core-pulling slide block 62 and the arc-shaped core 4 move along the arc-shaped guide rail 15 away from the end face 19 until the circular demoulding signal fed back by the first power part 14 is completed, the first power part 14 drives the linear rack 13 to move, so as to drive the gear 12 to rotate, thereby drive the rotary swing arm 12 to move along the curved pipe 17, thereby drive the second power part 17, and finally drive the curved pipe part 17 to move the curved pipe part 17, and the straight core part 17, and the injection molding part, and finally realize the straight moulding and the moulding;

the utility model meets the integral injection molding and demolding requirements of the turbo-charging air inlet elbow 21, compared with the traditional disassembling welding mode, the branch pipe 23 of the utility model has the advantages of high integration level, no post-processing and low manufacturing cost, avoids the risks of welding quality (such as welding surface buckling deformation, welding flash, cold joint, air sealing leakage and the like) caused by disassembling welding, reduces the process difficulty, has low quality control cost, improves the structural reliability and the production qualification rate, and has better technical popularization prospect.

What is not described in detail in this specification is prior art known to those skilled in the art.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (10)

1. An integral injection molding die for a turbo-charging air inlet elbow, comprising:

a front template (1);

a rear template (2) provided with an arc-shaped guide rail (15);

an air inlet bent pipe forming cavity (3) which comprises a bent pipe forming cavity (19) and is formed between the front template (1) and the rear template (2);

one end of the rotary swing arm (10) is arranged on the arc-shaped guide rail (15), the other end of the rotary swing arm is connected with the rotary shaft (11), and the rotary shaft (11) can drive the rotary swing arm (10) to move along the arc-shaped guide rail (15);

an arc-shaped core (4) comprising a large end (41), a small end (42) and an arc-shaped section (43) which can be positioned in the elbow forming cavity (19), the diameter of the large end (41) to the small end (42) of which gradually decreases;

the core pulling sliding block (62) is arranged at one end of the rotary swing arm (10) close to the arc-shaped guide rail (15) and can be matched with the end face of the large end (41) of the arc-shaped core (4), the core pulling sliding block (62) can be separated from the end face of the large end (41) of the arc-shaped core (4) along with the opening of the front template (1) and the rear template (2), and is attached to the end face of the large end (41) of the arc-shaped core (4) along with the closing of the front template (1) and the rear template (2);

and a straight core (5) which is matched with the small end (42) of the arc-shaped core (4) and forms an injection molding space of the bent pipe (22) in the bent pipe forming cavity (19).

2. The integrated injection molding die of the turbo-charging air inlet elbow according to claim 1, further comprising an elbow core pulling mechanism (6) mounted on one end of the rotary swing arm (10) close to the arc-shaped guide rail (15), wherein the elbow core pulling mechanism (6) comprises a sliding groove (61) formed in the rotary swing arm (10), a core pulling sliding block (62) is slidably arranged in the sliding groove (61), a guide hole (63) is formed in the core pulling sliding block (62), a guide block (64) is slidably mounted in the guide hole (63), one end of the guide block (64) extends out of the guide hole (63) to be connected with the rotary swing arm (10), and the other end of the guide block (64) is connected with the end face of the large end (41) of the arc-shaped core (4).

3. The integrated injection molding die of the turbo-charging air inlet elbow according to claim 2, characterized in that an inclined guide pillar (67) is mounted on the front die plate (1), the inclined guide pillar (67) inclines towards the end face far away from the large end (41) of the arc-shaped core (4) along the direction of the sliding groove (61), an inclined hole (66) matched with the inclined guide pillar (67) is formed in the core-pulling sliding block (62), the inclined direction of the inclined hole (66) is consistent with that of the inclined guide pillar (67), and a first kidney-shaped hole (65) communicated with the inclined hole (66) is formed in the guide block (64).

4. The integrated injection molding die for the turbo-charging air inlet elbow according to claim 3, wherein a mounting hole (69) is formed in one end, close to the end face of the big end (41) of the arc-shaped core (4), of the core pulling slide block (62), a first spring (68) is mounted in the mounting hole (69), one end of the first spring (68) extends out of the mounting hole (69), and can be contacted with or separated from the end face of the big end (41) of the arc-shaped core (4).

5. The integral injection molding die of the turbocharger air inlet elbow according to claim 4, wherein the diameter ratio of the large end (41) to the small end (42) of the arc-shaped core (4) is more than or equal to 1.5.

6. The integrated injection molding die of the turbo-charging air inlet elbow according to claim 1, wherein the air inlet elbow molding cavity (3) further comprises a branch pipe molding cavity (20) located on a front template (1), a front template plate (7) is installed on one side, away from a rear template (2), of the front template (1), and a branch pipe core pulling mechanism (8) is installed on the front template plate (7).

7. The integrated injection molding die of the turbo-charged air inlet elbow according to claim 6, wherein the branch pipe core pulling mechanism (8) comprises a branch pipe core pulling sliding block seat (84) installed on the front die plate (7) and a branch pipe core pulling guide block (83) installed on the front die plate (1), the branch pipe core pulling guide block (83) is located at one side of the branch pipe molding cavity (20), an inner branch pipe core pulling sliding block (82) is slidably installed on the branch pipe core pulling sliding block seat (84), an outer branch pipe core pulling sliding block (81) is slidably installed on the branch pipe core pulling guide block (83), a through hole (85) is formed in the outer branch pipe core pulling sliding block (81), and an injection molding space of the branch pipe (23) is formed in the branch pipe molding cavity (20) between the inner branch pipe core pulling sliding block (82) and the outer branch pipe core pulling sliding block (81).

8. The integrated injection molding mold of the turbo-charged air inlet elbow according to claim 7, wherein the in-branch core-pulling slide block (82) comprises an in-branch core-pulling upper slide block (821) and an in-branch core-pulling lower slide block (822), the in-branch core-pulling upper slide block (821) and the in-branch core-pulling lower slide block (822) are connected through a transition part (823), the in-branch core-pulling upper slide block (821) and the in-branch core-pulling lower slide block (822) are both in cylindrical arrangement, the diameter of the in-branch core-pulling upper slide block (821) is larger than that of the in-branch core-pulling lower slide block (822), the diameter of the in-branch core-pulling upper slide block (821) is the same as that of the through hole (85), a second waist-shaped hole (86) is formed in the in-branch core-branch inner slide block (821), a round pin (87) which is in sliding fit with the second waist-shaped hole (86) is formed in the inner wall of the through hole (85), the in-branch core-pulling lower slide block (822), the transition part (823) and the out-branch core-pulling upper slide block (81) form an injection molding space (23) in the branch molding cavity (20), and the in-branch pipe can be matched with the arc-shaped upper slide block (43.

9. The integrated injection molding die of the turbo-charging air inlet elbow according to claim 8, wherein a first T-shaped block (88) is arranged on one side of the branch pipe outer core-pulling sliding block (81), a first T-shaped groove (89) is formed in the branch pipe core-pulling guide block (83), the first T-shaped block (88) is in sliding fit with the first T-shaped groove (89), a second T-shaped block (90) is arranged on the branch pipe inner core-pulling sliding block (82), a second T-shaped groove (91) is formed in the branch pipe core-pulling sliding block seat (84), and the second T-shaped block (90) is in sliding fit with the second T-shaped groove (91).

10. The integrated injection molding die of the turbo-charging air inlet elbow according to claim 9, characterized in that a telescopic rod (25) is arranged on one side of the front die plate (7) close to the front die plate (1), a second spring (18) is sleeved on the telescopic rod (25), one end of the second spring (18) is connected with the front die plate (7), and the other end of the second spring (18) can be contacted with or separated from the front die plate (1).