CN108748906B - Rigid rotary core-pulling die for deep-opening U-shaped bent pipe - Google Patents
Rigid rotary core-pulling die for deep-opening U-shaped bent pipe Download PDFInfo
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- CN108748906B CN108748906B CN201810842994.XA CN201810842994A CN108748906B CN 108748906 B CN108748906 B CN 108748906B CN 201810842994 A CN201810842994 A CN 201810842994A CN 108748906 B CN108748906 B CN 108748906B
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- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 230000009471 action Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/004—Bent tubes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention provides a rigid rotary core-pulling mold for a deep-opening U-shaped bent pipe, and belongs to the technical field of molds. The rotary core pulling mechanism solves the technical problems that the demolding can not be guaranteed to be in place after the pipe fitting of the rotary core pulling mechanism of the traditional U-shaped pipe bending die is molded and demolded, and the inner wall of the pipe fitting is possibly damaged. This rotatory loose core mould of U type return bend includes cover half and movable mould, be equipped with two straight cores and two curved die core in the movable mould, the cover half, the movable mould, straight core and curved die core form the die cavity that is used for injection moulding, the die cavity both sides are equipped with two rotation parts that correspond with two straight cores respectively, two rotation parts sliding connection just homoenergetic are rotatory around the axle center of curved die place circular arc in the movable mould, the outside of rotation part has the extension arm that links firmly with the tip that corresponds curved die core, straight flute has been seted up to one side that each straight core orientation corresponds rotation part, straight flute extends to the terminal surface of straight core along straight core axial, the extension arm inlays and locates in the straight flute and seals holding straight flute. The U-shaped bent pipe core pulling die can ensure the demolding yield of the U-shaped bent pipe.
Description
Technical Field
The invention belongs to the technical field of dies, and relates to a rigid rotary core-pulling die for a deep-opening U-shaped bent pipe.
Background
The rapid development of the plastic industry and the huge market demand bring the opportunity for China die enterprises and challenges at the same time. The mould is used as a core means of industrial manufacture, plays a role in the quality, variety, yield and even cost of products, and the height of the mould design and manufacture technology directly reflects the design development capability and the manufacturing industry level of the country. The development of the mould with autonomous core technology, precision, complexity and special purpose is used for improving the technical level of plastic moulds in China and promoting the development of mould industry, in industrial products, people often require products with bending, arc-shaped, U-shaped and other inward bending shapes, such as the most common fields of automobile air inlet branch pipes, industrial instruments and meters, plastic building material connecting bent heads and the like, and the products have the advantages of special shapes, complex mould structure and demoulding mode, high manufacturing difficulty and long production period. The design and manufacture of the core pulling mechanism become the key of mould manufacture. In order to smoothly realize core pulling of the U-shaped pipe, the core pulling of the straight core part is generally finished and then the core pulling of the bent pipe part is generally finished, so that smooth core pulling of the bent pipe part is ensured, the inner diameter of the straight pipe section of a general U-shaped pipe product is larger than the inner diameter of the bent pipe section, enough core pulling space is ensured, but the size difference of the straight pipe section and the bent pipe section is not suitable to be too large, and the length of the straight pipe section is also often designed to be shorter.
The applicant designs a Chinese patent with the authority of publication number CN202702530U for solving the problems, and the rotary core pulling mechanism for the U-shaped bent pipe fitting die adopts a demoulding mode of rotating an integral cavity, so that the die is reliable and durable in action. There are some disadvantages: the drawing of patterns is in place can not be guaranteed after the drawing of patterns of pipe fitting shaping, still needs the manual pipe fitting that takes out of manual work, has operation risk and inefficiency, in addition can not ensure appropriate effort direction at the pipe fitting in-process of taking, probably leads to the pipe fitting inner wall damage. The mode of adopting the hinge to connect the straight core and the bent core is considered by the technical personnel in the field for guaranteeing the efficiency, so that the efficiency is improved to a certain extent, but larger acting force is generated between the bent core and the inner wall of the pipe fitting in the core pulling process, defective products are easy to generate, and the size limitation on the U-shaped pipe is larger.
Disclosure of Invention
The invention provides a rigid rotary core-pulling mold for a deep-opening U-shaped bent pipe, aiming at the problems existing in the prior art, and aims to solve the technical problems that: how to improve the yield of the U-shaped bent pipe.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a U type return bend rigidity rotation loose core mould of deep opening, includes cover half and movable mould, be equipped with two straight cores and two curved die cores in the movable mould, cover half, movable mould, straight core and curved die core form the die cavity that is used for injection moulding, its characterized in that, the die cavity both sides are equipped with two respectively with two the rotation part that straight core corresponds, two rotation part sliding connection just homoenergetic is rotatory around the axle center of curved die core place circular arc in the movable mould, the outside of this rotation part have with correspond the extension arm that the tip of curved die core linked firmly, each straight core has seted up the straight groove towards one side of corresponding rotation part, straight groove extends to the terminal surface of straight core along straight core axially, the extension arm inlays to be located in the straight groove and will hold straight groove to seal.
The fixed die, the movable die, the two straight cores and the two bent pipe types jointly form a die cavity for molding the U-shaped pipe, two rotating parts capable of sliding around the axis of the bent pipe core are arranged in the movable die, and straight grooves are formed in one sides of the straight cores towards the rotating parts closest to each other, so that extension arms on the rotating parts penetrate through the straight grooves and are rigidly and fixedly connected with the bent pipe core, interference between the straight cores and the bent pipe core in the core pulling process is avoided, the forming is intact, a core pulling component is not required to be installed on the bent pipe core after the core is pulled by the straight cores, the probability of collision caused by the installation process is reduced, the corresponding bent pipe core can be controlled through the rotating parts rapidly, the operation efficiency is high, the rotating parts synchronously and rigidly drive the bent pipe core to move along the arc track where the rotating parts are located, acting force is not generated between the bent pipe core pulling process and the inner walls of molded pipe fittings, damage to the inner walls of the pipe fittings is avoided, sufficient space is reserved between the straight grooves and the inner walls of the straight cores after the straight cores are ensured, the extension arms can be designed to be longer, the extension arms in the core pulling process can be prevented from rotating and the extension arms in the core pulling process, and the U-shaped good product yield is guaranteed at the same time.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipe, the end face of the straight core is provided with a transition boss, the end face of the transition boss can be propped against the bent pipe core, the straight groove extends to the end face of the transition boss, one outward side of the transition boss is a ring surface and is in smooth transition with the outer surface of the extension arm, one inward side of the transition boss is a straight cylindrical surface, and the lower end of the transition boss is in smooth transition with the intrados of the bent pipe core. The core is almost free from acting force with the inner wall of the pipe fitting, the probability of generating action stress is larger when the core pulling distance is longer due to the fact that absolute concentricity is difficult to guarantee in the rotary core pulling action, the transition boss is arranged on the end face of the straight core, the outer side surface of the transition boss is an annular surface and is in smooth transition with the outer surface of the extension arm, the inner side surface of the transition boss is a straight cylindrical surface and is in smooth transition with the inner cambered surface of the bent pipe core, and therefore the transition boss can participate in forming of part of the bent pipe region and does not interfere with the core pulling action of the straight core, the working length of the bent pipe core and the rotating angle of the rotating part are reduced, the probability of generating stress in the rotary core pulling process is further reduced, and the yield of the U-shaped bent pipe is improved.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipe, the outer side of the rotating part is arc-shaped, two horizontally extending racks are inserted in the moving mold, the two racks are parallel and respectively arranged at the outer sides of the rotating parts, and the inner side surface of the rack is meshed with the outer side surface of the corresponding rotating part for transmission. Through set up two horizontally extending racks respectively with the lateral surface of rotation part if the meshing tooth transmission cooperation in the movable mould, can realize the accurate operation to rotation of rotation part through controlling the axial displacement of rack like this, do benefit to the yields that improves U type return bend.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipes, two sides of the movable mold are respectively fixed with a baffle plate extending along the axial direction of the straight mold core, a first slide block and a second slide block are connected between the two baffle plates in a sliding manner from inside to outside along the length direction, the two racks are fixedly connected with the first slide block, the two straight mold cores are fixedly connected with the second slide block, and the second slide block can abut against the first slide block. Through setting up the baffle in the both sides of movable mould, the equal sliding connection of slider first and the slider second that is used for controlling the movement of rack and is used for controlling straight core to loose core is between two baffles, and the baffle can provide spacing and direction for the motion of slider first and slider second like this, guarantees to loose core the action accurate reliable and be convenient for operating personnel from outer operation, makes slider second and slider first offset before loosing core, can guarantee like this to need in the process of loosing core at the straight core and loose core action start the back rack just can move, avoids the confusing of order of loosing core to cause the pipe fitting damage.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipes, the outer side surface of the fixed mold is fixed with a guide plate, the inner side of the guide plate is provided with a guide groove extending obliquely from top to bottom towards the core-pulling direction, the second slide block is fixed with a guide post perpendicular to the guide plate, and the guide post is inserted in the guide groove and can slide relative to the inner side wall of the guide groove. Through set up the deflector on the cover half and make the guide way drive slider two through with the guide post cooperation motion, slider two also can move simultaneously at the in-process of die sinking action like this and drive straight core loose core to improve core-pulling efficiency and reduce the actuating source and arrange.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipes, a sliding plate in sliding connection along the length direction is further arranged between the two baffle plates, the end part of the sliding plate is fixedly connected with two mounting plates inserted in the movable mold along the horizontal direction, and the two rotating parts are respectively in sliding connection with the mounting plates. When the straight core and the bent pipe core are required to eject the workpiece in place, the distance between the bent pipe core and the pipe fitting is relatively short only by rotating the core-pulling part, the workpiece can collide with the bent pipe core when being taken, the sliding plate drives the mounting plate to move by arranging the rotating part on the mounting plate, and thus the whole rotating part can continuously move outwards, collision is avoided, and the yield is improved.
In the above-mentioned rigid rotary core-pulling mold for deep-opening U-shaped bent pipes, the top surfaces of the two mounting plates are both fixed with arc-shaped slide rails, and the two rotating parts are respectively in sliding connection with the arc-shaped slide rails. Through being fixed in rotary part sliding fit's arc slide rail at the top surface of mounting panel, can guarantee like this that the motion action of rotary part is canonical accurate, further improves the yields.
Compared with the prior art, the invention has the following advantages:
1. the core pulling mold has the advantages that the two rotating parts capable of sliding around the axis of the bent pipe core are arranged in the movable mold, the straight grooves are formed in one sides of the straight cores towards the rotating parts closest to each other, the extension arms on the rotating parts are rigidly and fixedly connected with the bent pipe core through the straight grooves, the corresponding bent pipe core can be rapidly controlled through the rotating parts, the operation efficiency is high, the rotating parts synchronously and rigidly drive the bent pipe core to perform core pulling movement along the circular arc track of the rotating parts, acting force is not generated between the core pulling process of the bent pipe core and the inner wall of a formed pipe fitting, damage to the inner wall of the pipe fitting is avoided, the straight grooves are formed in the outer side of the straight cores, enough space is reserved between the extension arms and the inner wall of the formed pipe fitting after the core pulling of the straight cores is ensured, collision between the extension arms and the pipe fitting in the rotating core pulling process is avoided, and the yield of the U-shaped bent pipe is improved while efficient core pulling is ensured.
2. The transition boss is arranged on the end face of the straight core, so that the transition boss can participate in the forming of a part of bent pipe area and does not interfere with the core pulling action of the straight core, the working length of the bent pipe core and the rotation angle of the rotating part are reduced, the probability of stress in the process of rotating core pulling is further reduced, and the yield of the U-shaped bent pipe is improved.
Drawings
Fig. 1 is a schematic perspective view of the core-pulling mold.
Fig. 2 is a schematic diagram of a three-dimensional structure of the core-pulling mold after the hidden fixed mold.
Fig. 3 is a schematic perspective view of the cooperation of a straight core, a bent core and a rotating part.
Fig. 4 is a schematic perspective view of a straight core.
Fig. 5 is a schematic perspective view of a guide plate.
Fig. 6 is a schematic sectional view of the core-pulling mold.
Fig. 7 is a schematic perspective view of the cooperation of the slide plate, the mounting plate and the rotating part.
Fig. 8 is a schematic perspective view of the mounting plate and the rotating part.
In the figure, 1, a fixed mold;
2. a movable mold; 21. a mold cavity; 22. a rack; 23. a baffle;
3. a straight core; 31. a straight groove; 32. a transition boss;
4. a bent tube core;
5. a rotating part; 51. an extension arm;
6. a first sliding block;
7. a second slide block; 71. a guide post;
8. a guide plate; 81. a guide groove;
9. a mounting plate; 91. an arc-shaped slide rail;
10. and (3) a sliding plate.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-4, fig. 7 and fig. 8, the rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe comprises a fixed mold 1 and a movable mold 2, wherein two straight cores 3 and two bent pipe cores 4 are arranged in the movable mold 2, the fixed mold 1, the movable mold 2, the straight cores 3 and the bent pipe cores form a mold cavity 21 for injection molding, two rotary parts 5 are also connected in the movable mold 2 in a sliding manner, the two rotary parts 5 are respectively positioned at two sides of the mold cavity 21 and can rotate around the axis of the bent pipe cores 4, an extension arm 51 fixedly connected with the end part of the bent pipe cores 4 is arranged at the outer side of each rotary part 5, a straight groove 31 is formed at one side of each straight core 3 towards the nearest rotary part 5, the straight groove 31 axially extends to the end face of the straight core 3, and the extension arm 51 is embedded in the straight groove 31 and seals the straight groove 31. The fixed die 1, the movable die 2, two straight cores 3 and two bent pipe types jointly form a die cavity 21 for molding an injection U-shaped pipe, two rotating parts 5 capable of sliding around the axes of the bent pipe cores 4 are arranged in the movable die 2, and straight grooves 31 are formed in one side of each straight core 3, which faces the nearest rotating part 5, so that extension arms 51 on the rotating parts 5 penetrate through the straight grooves 31 and are rigidly and fixedly connected with the bent pipe cores 4, interference of the straight cores 3 with the bent pipe cores 4 in a core pulling process is avoided, good molding is ensured, core pulling components are not required to be installed on the bent pipe cores 4 after the straight cores 3 are pulled, collision probability caused in an installation process is reduced, corresponding bent pipe cores 4 can be controlled through the rotating parts 5 rapidly, operating efficiency is high, the rotating parts 5 synchronously and rigidly drive the bent pipe cores 4 to move along circular arc tracks where the rotating parts are located, acting forces are not generated between the core pulling processes of the bent pipe cores 4 and the inner walls of molded pipe fittings, damage to the inner walls of the pipe fittings is avoided, the straight core grooves 31 are formed on the outer sides of the straight cores 3, the core pulling process can not interfere with the inner walls of the extension arms 51 after the straight cores 3 are ensured, sufficient space between the extension arms 51 and the inner walls of the formed pipe cores are ensured to be guaranteed, and the U-shaped good product is prevented from being rotated in the process, and the good product is guaranteed. Further, the end face of the straight core 3 is provided with a transition boss 32, the end face of the transition boss 32 abuts against the bent pipe core 4, the straight groove 31 extends to the end face of the transition boss 32, the outer side face of the transition boss 32 is an annular face and is in smooth transition with the outer surface of the extension arm 51, and the inner side face of the transition boss 32 is a straight cylindrical face and is in smooth transition with the inner cambered surface of the bent pipe core 4. Through setting up transition boss 32 at the terminal surface of straight core 3, make the outside of transition boss 32 personally submit the anchor ring and with the surface smooth transition of extension arm 51, and the medial surface of transition boss 32 be straight cylinder and with the intrados smooth transition of bent pipe core 4, transition boss 32 can participate in the shaping of some return bend regions and do not interfere the action of loosing core of straight core 3 like this, thereby reduce the working length of bent pipe core 4 and the rotation angle of rotation portion 5, further reduce the probability that the rotatory in-process takes place the stress, improve the yields of U type return bend.
As shown in fig. 1-3, 7 and 8, the outer side surface of the rotating part 5 is arc-shaped, two horizontally extending racks 22 are inserted in the movable mould 2, the two racks 22 are parallel, and the inner side surfaces of the racks 22 are respectively meshed with the outer side surface of the rotating part 5 for transmission. Through set up two horizontally extending racks 22 in movable mould 2 respectively with the lateral surface of rotation part 5 if the meshing tooth transmission cooperation, can realize the accurate operation to rotation part 5 pivoted through controlling the axial displacement of rack 22 like this, do benefit to the yields that improves U type return bend.
As shown in fig. 1, 2 and 6, two sides of the movable mold 2 are respectively fixed with a baffle plate 23 extending along the axial direction of the straight mold core 3, a first slide block 6 and a second slide block 7 are connected between the two baffle plates 23 in a sliding manner from inside to outside along the length direction, two racks 22 are fixedly connected with the first slide block 6, the two straight mold cores 3 are fixedly connected with the second slide block 7, and the second slide block 7 abuts against the first slide block 6. Through setting up baffle 23 in the both sides of movable mould 2, the equal sliding connection of slider one 6 that is used for controlling rack 22 motion and slider two 7 that are used for controlling straight core 3 to loose core is between two baffles 23, baffle 23 can provide spacing and direction for the motion of slider one 6 and slider two 7 like this, guarantee to loose core action accurate reliable and be convenient for operating personnel from outer operation, slider two 7 and slider one 6 offset are leaned on, can guarantee like this that the rack 22 just can act after the action begins to loose core at straight core 3 in-process of loosing core, avoid the confusing order of loosing core to lead to the fact the pipe fitting damage.
As shown in fig. 1, 2, 5 and 6, two guide plates 8 are fixed on two sides of the fixed mold 1, guide grooves 81 extending obliquely from top to bottom in the core pulling direction are formed in the inner sides of the guide plates 8, two guide posts 71 perpendicular to the guide plates 8 are fixed on the second slide block 7, and the guide posts 71 are inserted into the guide grooves 81 and can slide relative to the inner side walls of the guide grooves 81. Through setting up deflector 8 and making guide slot 81 drive slider two 7 motion through cooperating with guide post 71 on cover half 1, slider two 7 also can move simultaneously and drive straight core 3 loose core in the in-process of die sinking action like this to improve core efficiency and reduce the actuating source and arrange.
As shown in fig. 2 and fig. 6-8, a sliding plate 10 slidingly connected along the length direction is further arranged between the two baffles 23, two mounting plates 9 inserted into the movable mold 2 along the horizontal direction are fixedly connected to the end parts of the sliding plate 10, and the two rotating parts 5 are respectively slidingly connected to the mounting plates 9. When the straight core 3 and the bent pipe core are required to eject a workpiece in place, the distance between the bent pipe core 4 and the pipe fitting is relatively short only by rotating the rotating part 5, the workpiece can collide with the bent pipe core when being taken, the rotating part 5 is arranged on the mounting plate 9, the sliding plate 10 drives the mounting plate 9 to move, and thus the whole rotating part 5 can continuously move outwards, collision is avoided, and the yield is improved. The top surfaces of the two mounting plates 9 are respectively fixed with an arc-shaped sliding rail 91, and the two rotating parts 5 are respectively in sliding connection with the arc-shaped sliding rails 91. Through be fixed in rotary part 5 sliding fit's arc slide rail 91 at the top surface of mounting panel 9, can guarantee like this that the motion action of rotary part 5 is standardised accurate, further improves the yields.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a rotatory loose core mould of deep-opening U type return bend rigidity, includes cover half (1) and movable mould (2), be equipped with two straight core (3) and two curved die core (4) in movable mould (2), cover half (1), movable mould (2), straight core (3) and curved die core (4) form die cavity (21) that are used for injection moulding, a serial communication port, the both sides of die cavity (21) are equipped with two respectively with two rotation portion (5) that straight core (3) correspond, two rotation portion (5) sliding connection just homoenergetic are rotatory around the axle center of curved die core (4) place in the movable mould, the outside of this rotation portion (5) have with correspond extension arm (51) that the tip of curved die core (4) linked firmly, each straight core (3) set up straight groove (31) towards one side of corresponding rotation portion (5), straight groove (31) are along straight core (3) axial extension to the terminal surface of straight core (3), extension arm (51) are inlayed and are located straight groove (31) and are sealed core (31).
2. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 1, wherein the end face of the straight core (3) is provided with a transition boss (32), the end face of the transition boss (32) can be propped against the bent pipe core (4), the straight groove (31) extends to the end face of the transition boss (32), one outward side of the transition boss (32) is an annular surface and is in smooth transition with the outer surface of the extension arm (51), one inward side of the transition boss (32) is a straight cylindrical surface, and the lower end of the transition boss is in smooth transition with the intrados of the bent pipe core (4).
3. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 1 or 2, wherein the outer side surface of the rotary part (5) is arc-shaped, two horizontally extending racks (22) are inserted in the movable mold (2), the two racks (22) are parallel and are respectively arranged at the outer sides of the two rotary parts (5), and the inner side surface of the rack (22) is in meshed transmission with the outer side surface of the corresponding rotary part (5).
4. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 3, wherein baffle plates (23) extending along the axial direction of the straight core (3) are fixed on two sides of the movable mold (2), a first sliding block (6) and a second sliding block (7) are connected between the two baffle plates (23) in a sliding manner from inside to outside along the length direction, the two racks (22) are fixedly connected with the first sliding block (6), the two straight cores (3) are fixedly connected with the second sliding block (7), and the second sliding block (7) can abut against the first sliding block (6).
5. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 4, wherein a guide plate (8) is fixed on the outer side surface of the fixed mold (1), a guide groove (81) which extends obliquely towards the core-pulling direction from top to bottom is formed in the inner side of the guide plate (8), a guide post (71) perpendicular to the guide plate (8) is fixed on the second sliding block (7), and the guide post (71) is inserted into the guide groove (81) and can slide relative to the inner side wall of the guide groove (81).
6. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 4, wherein a sliding plate (10) which is connected in a sliding manner along the length direction is further arranged between the two baffle plates (23), two mounting plates (9) which are inserted into the movable mold (2) along the horizontal direction are fixedly connected to the end parts of the sliding plate (10), and the two rotary parts (5) are respectively connected to the mounting plates (9) in a sliding manner.
7. The rigid rotary core-pulling mold for the deep-opening U-shaped bent pipe according to claim 6, wherein the top surfaces of the two mounting plates (9) are respectively fixed with an arc-shaped sliding rail (91), and the two rotating parts (5) are respectively connected with the arc-shaped sliding rails (91) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810842994.XA CN108748906B (en) | 2018-07-27 | 2018-07-27 | Rigid rotary core-pulling die for deep-opening U-shaped bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810842994.XA CN108748906B (en) | 2018-07-27 | 2018-07-27 | Rigid rotary core-pulling die for deep-opening U-shaped bent pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108748906A CN108748906A (en) | 2018-11-06 |
| CN108748906B true CN108748906B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810842994.XA Active CN108748906B (en) | 2018-07-27 | 2018-07-27 | Rigid rotary core-pulling die for deep-opening U-shaped bent pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110587927B (en) * | 2019-10-18 | 2021-06-15 | 固特科工业塑料件科技(深圳)有限公司 | Branch pipe injection molding device |
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| CN205951187U (en) * | 2016-08-11 | 2017-02-15 | 创意塑胶工业（苏州）有限公司 | Core pulling and demolding mechanism of circle curved pipe |
| CN206953469U (en) * | 2017-06-05 | 2018-02-02 | 永高股份有限公司 | A kind of core-pulling device of pipe fitting mold and there is its bend pipe tube bundle extracting machine |
| CN208497573U (en) * | 2018-07-27 | 2019-02-15 | 永高股份有限公司 | A kind of U-shaped bend pipe rigid rotating core-pulling die of depth mouth |
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| CN203805253U (en) * | 2014-03-14 | 2014-09-03 | 深圳亿和模具制造有限公司 | Circular arc bent pipe core-pulling mold |
| CN205951187U (en) * | 2016-08-11 | 2017-02-15 | 创意塑胶工业（苏州）有限公司 | Core pulling and demolding mechanism of circle curved pipe |
| CN206953469U (en) * | 2017-06-05 | 2018-02-02 | 永高股份有限公司 | A kind of core-pulling device of pipe fitting mold and there is its bend pipe tube bundle extracting machine |
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|---|---|
| CN108748906A (en) | 2018-11-06 |
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