CN109719903B - Sequential rotation core-pulling mold for double-inner-arc tee joint and using method thereof - Google Patents
Sequential rotation core-pulling mold for double-inner-arc tee joint and using method thereof Download PDFInfo
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Abstract
The invention discloses a sequential rotation core-pulling mold for a double-inner-arc tee joint and a using method thereof, wherein the mold comprises the following components: the movable mould is connected with the fixed mould through a guide column in a sliding fit mode, and the three groups of kinematic pairs are arranged on the movable mould in a T shape and are respectively communicated with a double-inner-arc-shaped tee joint movable mould cavity arranged on the movable mould and a double-inner-arc-shaped tee joint fixed mould cavity arranged on the fixed mould correspondingly. The use method comprises the following steps: the three sets of kinematic pairs are mainly adopted, the respective cores are driven by respective power, and respective core pulling actions are sequentially completed according to the sequence, so that all the cores are separated from the product. The invention has the advantages of compact structure, reasonable design, convenient operation, stable and reliable operation, high working efficiency and good demoulding effect.
Description
Technical Field
The invention relates to the field of injection molds, in particular to a sequential rotation core-pulling mold for a double-inner-arc tee joint and a using method thereof.
Background
In the current water supply and drainage system, the diversion and collection of the waterway are required to be applied to the inner arc three-way product. In practical application, the main function of the inner arc is to enable water flows collected from different directions to flow along the inner arc constraint of a product (the action of the climbing angle, the adsorption force and the surface tension of the water flows), so that impact on the pipe wall caused by direct running of the water flows when the product turns is avoided or reduced, and impact noise is generated.
At present, the general inner arc tee bend product, it is that the askew head core structure mould of horseshoe shape is processed and is formed that mostly uses, this core structure mould is owing to receive the restriction of the rotation angle of loosing core, can not guarantee the integrality of tee bend product inner arc completely, and the product of producing has changed water channel in fact and need satisfied the rotational moulding's of equal circle cross-section demand, just so can not satisfy the flow adsorption requirement (adhesive force) of water, can be because adhesive force is little and striking pipe wall noise when the rivers pass through. The arc-shaped water passing channel formed by rotating the equal-circular section can be smoothly demoulded only by means of other independent rotating structures, and the common U-shaped skew head structure cannot meet the demoulding requirement that the left and right sides of a three-way product have inner arcs, namely a double-inner-arc three-way product.
The double-inner-arc tee product is a tee product designed with a bidirectional inner arc surface, and can collect water flows in two different directions into one branch flow pipe (the design can also be applied to the design with three or four inner arc surfaces), so that waste caused by using a plurality of unidirectional inner-arc downstream tee joints or elbows is avoided (namely, the pipe fittings are used in multiple types, so that the installation is time-consuming and labor-consuming, the occupied area is large, the factor for avoiding the occurrence is important in buildings, the connection among a plurality of groups of pipe fittings can not avoid the generation of water flow noise, and the factor for avoiding the occurrence is also important in high-rise buildings).
The core pulling of the traditional rotary core pulling mold for producing the double-inner-arc tee joint is generally carried out outside the mold, namely, the core pulling is carried out outside the mold, namely, a plurality of groups of combined cores are used interchangeably, each group of combined cores are demolded together with a product after injection molding, and the combined cores in the combined cores are detached by using a mechanical tool for recycling in the later period; the core-pulling method has the disadvantages of long production period, low injection molding efficiency, high cost, quick abrasion of the combined core caused by frequent disassembly and hidden danger of operation safety.
Aiming at the problems and based on market development and customer order demand consideration, the company develops and designs a sequential rotary core-pulling mold for producing a flow-dividing three-way product with a bidirectional inner arc surface design so as to meet the injection molding production requirements of the double inner arc three-way mold (product) and the difficult problem of rotary core-pulling.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to provide a sequential rotary core-pulling mold for a double-inner-arc tee joint and a using method thereof, wherein the mold has the advantages of compact structure, reasonable design, convenience in operation, stability and reliability in operation, high working efficiency and good demolding effect.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a rotatory loose core mould of order for two inner arc tee bend, its mainly be applied to have the three-way drawing of core drawing of order of reposition of redundant personnel of two inner arc formulas drawing of core drawing of patterns, contains movable mould and cover half, the movable mould passes through the guide post sliding fit with the cover half and is connected, still includes three kinematic pairs of group, three kinematic pairs of group be the T type and lay on the movable mould to equally divide do not with two inner arc tee bend movable mould cavities that are equipped with on the movable mould with the corresponding intercommunication of two inner arc tee bend cover half cavities that are equipped with on the cover half.
In the above mold, the three sets of kinematic pairs are respectively a first set of kinematic pairs arranged on the right side or the left side of the movable mold, a second set of kinematic pairs arranged on the left side or the right side of the movable mold, and a third set of kinematic pairs arranged on the front side or the rear side of the movable mold;
the first group of kinematic pairs, the second group of kinematic pairs and the third group of kinematic pairs are arranged on the movable die in a T shape and are respectively communicated with the double-inner-arc three-way movable die cavity and the double-inner-arc three-way fixed die cavity correspondingly.
In the mold, the first group of kinematic pairs comprises a first sliding block, a first bellmouth mold core, a first inner straight mold core and a first oil cylinder;
the first oil cylinder is fixed on the right side or the left side of the double-inner-arc three-way movable mould cavity through a first oil cylinder support, the driving end of the first oil cylinder is connected with the first sliding block, the first sliding block is connected with the first bellmouth core, the first bellmouth core is connected with the first inner straight core, and the first sliding block is in sliding fit with the first oil cylinder support.
In the mold, the second group of kinematic pairs comprises a second sliding block, a second bellmouth core, a first inner arc core locking block, a first rotating block, a second oil cylinder, a first rack and a first transmission gear;
the second hydro-cylinder passes through the second hydro-cylinder support to be fixed the left side or the right side in two inner arc tee joint movable mould chamber, and the drive end of second hydro-cylinder through first rack with first transmission gear meshing transmission is connected, first transmission gear is fixed on the first turning block, first inner arc core is fixed through first inner arc core latch segment on the first turning block, the second slider cover is established on the first inner arc core, and with first turning block sliding fit, second bellmouth core cover is established on the first inner arc core, and with second slider fixed connection.
In the mold, the third group of kinematic pairs comprises a third sliding block, a third bellmouth core, a second inner arc core locking block, a second rotating block, a third oil cylinder, a second rack and a second transmission gear;
the third hydro-cylinder passes through the third hydro-cylinder support to be fixed the front side or the rear side in two inner arc tee movable mould chambeies, and the drive end of third hydro-cylinder pass through the second rack with second drive gear meshing transmission is connected, second drive gear fixes on the second turning block, the second inner arc core passes through the second inner arc core latch segment to be fixed on the second turning block, the third slider cover is established on the second inner arc core, and with second turning block sliding fit, third bellmouth core cover is established on the second inner arc core, and with third slider fixed connection.
In the die, a first inclined pry bar sliding groove is further formed in the second sliding block and is matched with a first inclined pry bar arranged on the double-inner-arc three-way fixed die cavity.
In the die, a second inclined pry bar sliding groove is further formed in the third sliding block and is matched with a second inclined pry bar arranged on the double-inner-arc three-way fixed die cavity.
A use method of the sequential rotation core-pulling mold for the double-inner-arc tee joint comprises the following steps:
step 1, when a double-inner-arc three-way mold is used for injecting glue on an injection molding machine to fill a double-inner-arc three-way movable mold cavity of a movable mold and a double-inner-arc three-way fixed mold cavity of a fixed mold, after double-inner-arc three-way injection molding is completed, when the mold is opened, a first inclined pry bar and a second inclined pry bar on the fixed mold respectively and correspondingly drive a second slide block of a second group of kinematic pairs on the movable mold and a third slide block of a third group of kinematic pairs to slide on a first rotating block and a second rotating block respectively corresponding to the first inclined pry bar and the second inclined pry bar, and drive a second socket mold core and a third socket mold core respectively corresponding to the second inclined pry bar;
step 2, driving a first bellmouth mold core and a first inner straight mold core which are fixed on a first sliding block to move by feeding oil into a first oil cylinder of a first group of kinematic pairs, so that the first bellmouth mold core and the first inner straight mold core of the first group of kinematic pairs are completely separated from a double inner arc tee joint, and meanwhile, providing a demolding space for the first inner arc mold core of a second group of kinematic pairs to be rotationally separated from the double inner arc tee joint;
step 3, feeding oil into a second oil cylinder of the second group of kinematic pairs to drive a first rack to move, driving a first transmission gear to drive a first rotating block to rotate through the first rack, driving a first inner arc mold core fixed on the first inner arc mold core locking block to rotate along with the first rotating block, so that a second bell mouth mold core and the first inner arc mold core of the second group of kinematic pairs are completely separated from the double inner arc tee joint, and meanwhile, providing a demolding space for the second inner arc mold core of the third group of kinematic pairs to be rotationally separated from the double inner arc tee joint;
step 4, feeding oil into a third oil cylinder of the third group of kinematic pairs to drive a second rack to move, driving a second transmission gear to drive a second rotating block to rotate through the second rack, and driving a second inner arc mold core fixed on the second rotating block through a second inner arc mold core locking block to rotate along with the second rotating block, so that a third bell mouth mold core and the second inner arc mold core of the third group of kinematic pairs are completely separated from the double inner arc tee joint;
step 5, ejecting the double-inner-arc tee products subjected to the mold core demolding in the step 4 from the double-inner-arc tee movable mold cavity to complete the double-inner-arc tee demolding operation;
and 6, during resetting, driving a third oil cylinder of the third group of kinematic pairs to act firstly, pushing the second rotating block and the parts on the second rotating block back for resetting, then driving a second oil cylinder of the second group of kinematic pairs to act, pushing the first rotating block and the parts on the first rotating block back for resetting, then driving a first oil cylinder of the first group of kinematic pairs to act, pushing the first sliding block and the parts on the first sliding block back for resetting, finally closing the mold, gradually drawing the fixed mold to the movable mold through the guide column in the process of closing the mold, pressing the fixed mold together and pressing the fixed mold together, simultaneously pushing the second sliding block of the second group of kinematic pairs and the third sliding block of the third group of kinematic pairs back for resetting completely by a first inclined prying rod and a second inclined prying rod on the fixed mold, and waiting for the next injection molding cycle.
In the use method of the mold, the double-inner-arc tee joint comprises a straight water passing channel and two arc water passing channels, the straight water passing channel is matched with a first inner straight core of the first group of kinematic pairs, and the two arc water passing channels are respectively matched with a first inner arc core of the second group of kinematic pairs and a second inner arc core of the third group of kinematic pairs.
In the using method of the die, the two arc-shaped water passing channels are formed by rotating with equal circular cross sections.
Compared with the prior art, the invention has the beneficial effects that:
(1) the mode of sequentially pulling cores in the mould is adopted, the rotating space of each inner arc core is sequentially provided, the mutual interference among the cores is effectively avoided, and the demoulding effect of the double-inner arc tee joint injection product is ensured;
(2) the arc-shaped water passing channel formed by extracting various cores from the equal-circle cross section through the independent rotating motion of the three groups of kinematic pairs, so that the equal wall thickness inside and outside the product, the appearance and the internal shape of the product are effectively ensured;
(3) the rotary core pulling difficulty of the inner arc core of the traditional double-inner-arc three-way product is overcome;
(4) the whole die is compact in structure, reasonable in layout, convenient to operate, stable and reliable in operation, high in working efficiency and good in demolding effect.
Drawings
FIG. 1 is a schematic view of an embodiment of a sequential rotary core-pulling mold for a double-inner-arc tee according to the present invention;
FIG. 2 is an assembly view of the movable mold and three sets of kinematic pairs of FIG. 1;
FIG. 3 is a view of the injection molding complete state of a double inner arc tee product;
FIG. 4 is a state diagram of three sets of kinematic pairs when the injection molding of the double inner arc tee product in FIG. 3 is complete;
FIG. 5 is a state diagram of three sets of kinematic pairs driving a mold cavity when the mold is opened;
FIG. 6 is a state diagram of three sets of kinematic pairs not driving the mold cavity when the mold is opened;
FIG. 7 is a state diagram of three sets of kinematic pairs driving the model cavity when the first cylinder is actuated;
FIG. 8 is a state diagram of three sets of kinematic pairs not driving the model cavity when the first cylinder is actuated;
FIG. 9 is a state diagram of three sets of kinematic pairs driving the model cavity when the second cylinder is actuated;
FIG. 10 is a state diagram of three sets of kinematic pairs not driving the model cavity when the second cylinder is actuated;
FIG. 11 is a state diagram of three sets of kinematic pairs driving the model cavity when the third cylinder is actuated;
FIG. 12 is a state diagram of three sets of kinematic pairs not driving the model cavity when the third cylinder is actuated;
FIG. 13 is a cross-sectional view of a double inner arc tee;
in the figure:
100. moving the mold; 101. a double inner arc and a three moving model cavity;
200. fixing a mold; 201. a double inner arc tee fixed die cavity; 202. a first skew lever; 203. a second skew lever;
300. a guide post;
400. a first set of kinematic pairs; 401. a first slider; 402. a first socket core; 403. a first inner straight core; 404. a first cylinder; 405. a first cylinder support;
500. a second set of kinematic pairs; 501. a second slider; 501a, a first inclined pry bar sliding groove; 502. a second socket core; 503. a first inner arc core; 504. a first inner arc core locking block; 505. a first rotating block; 506. a second cylinder; 507. a first rack; 508. a first drive gear; 509. a second cylinder support;
600. a third set of kinematic pairs; 601. a third slider; 601a, a second inclined crowbar sliding groove; 602. a third socket core; 603. a second inner arc core; 604. a second inner arc core locking block; 605. a second rotating block; 606. a third oil cylinder; 607. a second rack; 608. a second transmission gear; 609. a third cylinder support;
700. a double inner arc tee joint; 701. a straight water passage; 702. an arc-shaped water passing channel.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following description further explains how the invention is implemented by combining the attached drawings and the detailed implementation modes.
As shown in fig. 1 and 2, the sequential rotation core-pulling mold for the double-inner-arc tee joint provided by the invention is mainly applied to sequential core-pulling and demolding of the double-inner-arc type shunt tee joint, and comprises a movable mold 100, a fixed mold 200 and three sets of kinematic pairs, wherein the movable mold 200 and the fixed mold 200 are connected in a sliding fit manner through a guide column 300, and the three sets of kinematic pairs are arranged on the movable mold 100 in a T shape and are respectively communicated with a double-inner-arc tee joint movable mold cavity 101 arranged on the movable mold 100 and a double-inner-arc tee joint fixed mold cavity 201 arranged on the fixed mold 200 correspondingly.
As shown in fig. 2, in the embodiment of the present invention, the three sets of kinematic pairs are the first set of kinematic pairs 400 disposed at the right side of the movable mold 100, the second set of kinematic pairs 500 disposed at the left side of the movable mold 100, and the third set of kinematic pairs 600 disposed at the rear side of the movable mold 100, respectively;
the first group of kinematic pairs 400, the second group of kinematic pairs 500 and the third group of kinematic pairs 600 are arranged on the moving die 100 in a T shape and are respectively communicated with the double-inner-arc three-way moving die cavity 101 and the double-inner-arc three-way fixed die cavity 201 correspondingly.
As shown in fig. 3 to 12, the first set of kinematic pairs 400 includes a first slider 401, a first socket core 402, a first inner straight core 403 and a first cylinder 404; wherein: the first oil cylinder 404 is fixed on the right side of the double-inner-arc three-way movable model cavity 101 through a first oil cylinder support 405, and the driving end of the first oil cylinder is fixedly connected with the first sliding block 401; the first slider 401 is fixedly connected with the first socket core 402; the first bell core 402 is fixedly connected with the first inner straight core 403; the first slider 401 is also in sliding engagement with the first cylinder support 405.
As shown in fig. 3 to 12, the second set of kinematic pairs 500 includes a second slide 501, a second socket core 502, a first inner arc core 503, a first inner arc core locking block 504, a first rotating block 505, a second cylinder 506, a first rack 507 and a first transmission gear 508; wherein: the second oil cylinder 506 is fixed on the left side of the double-inner-arc three-way movable model cavity 101 through a second oil cylinder support 509, and the driving end of the second oil cylinder is in meshing transmission connection with the first transmission gear 508 through a first rack 507; the first inner arc core 503 is fixed to the first turning block 505 by the first inner arc core locking block 504; the first rotating block 505 is in transmission connection with the first rack 507 through a first transmission gear 508; the second sliding block 501 is sleeved on the first inner arc core 503 and is in sliding fit with the first rotating block 505; the second bell-mouth core 502 is sleeved on the first inner arc core 503 and is fixedly connected with the second sliding block 501.
As shown in fig. 3 to 12, the third set of kinematic pairs 600 includes a third sliding block 601, a third socket core 602, a second inner arc core 603, a second inner arc core locking block 604, a second rotating block 605, a third cylinder 606, a second rack 607 and a second transmission gear 608; wherein: the third oil cylinder 606 is fixed on the rear side of the double-inner-arc three-way movable model cavity 101 through a third oil cylinder support 609, and the driving end of the third oil cylinder is in meshed transmission connection with a second transmission gear 608 through a second rack 607; the second inner arc core 603 is fixed on the second rotating block 605 through the second inner arc core locking block 604; the second rotating block 605 is in transmission connection with a second rack 607 through a second transmission gear 608; the third sliding block 601 is sleeved on the second inner arc core 603 and is in sliding fit with the second rotating block 605; the third socket core 602 is sleeved on the second inner arc core 603 and is fixedly connected with the third sliding block 601.
As shown in fig. 2, a first inclined pry bar sliding groove 501a is further formed in the second slider 501, and the first inclined pry bar sliding groove 501a is matched with a first inclined pry bar 202 arranged on the double-inner-arc three-way fixed die cavity 201.
As shown in fig. 2, a second inclined pry bar sliding groove 601a is further formed in the third slide block 601, and the second inclined pry bar sliding groove 601a is matched with a second inclined pry bar 203 arranged on the double-inner-arc three-way fixed die cavity 201.
The invention also provides a use method of the sequential rotation core-pulling mold for the double-inner-arc tee joint, which comprises the following steps:
step 1, when a double-inner-arc three-way mold is used for injecting glue on an injection molding machine to fill a double-inner-arc three-way movable mold cavity 101 of a movable mold 100 and a double-inner-arc three-way fixed mold cavity 201 of a fixed mold 200, after double-inner-arc three-way injection molding is completed, when the mold is opened, a first inclined pry bar 202 and a second inclined pry bar 203 on the fixed mold 200 respectively and correspondingly drive a second slide block 501 of a second group of kinematic pair 500 on the movable mold 100 and a third slide block 601 of a third group of kinematic pair 600 to slide on a first rotating block 505 and a second rotating block 605 respectively corresponding to each other, and drive a second socket mold core 502 and a third socket mold core 602 corresponding to each other to be separated from the double-inner-arc three-way 700 for injection molding, and refer to fig. 3;
step 2, feeding oil into a first oil cylinder 404 of the first set of kinematic pairs 400 to drive a first bell mouth core 402 and a first inner straight core 403 fixed on a first sliding block 401 to move, so that the first bell mouth core 402 and the first inner straight core 403 of the first set of kinematic pairs 400 are completely separated from the double inner arc tee 700, and simultaneously, a demolding space for rotatably separating the double inner arc tee 700 is provided for a first inner arc core 503 of the second set of kinematic pairs 500, which is shown in fig. 7 and 8;
step 3, feeding oil into a second oil cylinder 506 of the second set of kinematic pairs 500 to drive a first rack 507 to move, driving a first transmission gear 508 to drive a first rotating block 505 to rotate through the first rack 507, driving a first inner arc core 503 fixed on the first inner arc core locking block 504 to rotate along with the first rotating block 505, so that a second bell mouth core 502 and the first inner arc core 503 of the second set of kinematic pairs 500 are completely separated from the double inner arc tee 700, and meanwhile, providing a demolding space for the second inner arc core 603 of the third set of kinematic pairs 600 to rotatably separate from the double inner arc tee 700, as shown in fig. 9 and 10;
step 4, feeding oil into a third oil cylinder 606 of the third set of kinematic pairs 600 to drive a second rack 607 to move, driving a second transmission gear 608 to drive a second rotating block 605 to rotate through the second rack 607, driving a second inner arc core 603 fixed on the second rotating block 605 through a second inner arc core locking block 604 to rotate together with the second rotating block 605, so that a third bell mouth core 602 and the second inner arc core 603 of the third set of kinematic pairs 600 are completely separated from the double inner arc tee 700, as shown in fig. 11 and 12;
step 5, ejecting the double-inner-arc tee 700 product subjected to the mold stripping of all the cores in the step 4 from the double-inner-arc tee movable mold cavity 101 to complete the mold stripping operation of the double-inner-arc tee 700;
and 6, during resetting, firstly driving a third oil cylinder 606 of the third group of kinematic pairs 600 to act, firstly pushing back the second rotating block 605 and parts on the second rotating block to reset, then driving a second oil cylinder 506 of the second group of kinematic pairs 500 to act, pushing back the first rotating block 505 and parts on the first rotating block to reset, then driving a first oil cylinder 404 of the first group of kinematic pairs 400 to act, pushing back the first sliding block 401 and parts on the first sliding block 401, and finally closing the mold, wherein in the process of closing the mold, the fixed mold 200 gradually approaches to the movable mold 100 through the guide column 300 to be pressed together, meanwhile, the first oblique pry bar 202 and the second oblique pry bar 203 on the fixed mold 200 can completely push back the second sliding block 501 of the second group of kinematic pairs 500 and the third sliding block 601 of the third group of kinematic pairs 600 to reset, so far as to completely close the mold, and wait for the next injection molding cycle.
As shown in fig. 13, the double inner arc tee 700 used for demolding of the core pulling mold of the present invention includes a straight water passage 701 and two arc water passages 702; wherein: the straight water passing channel 701 is matched with the first inner straight core 403 of the first group of kinematic pairs 400, and the two arc water passing channels 702 are respectively matched with the first inner arc cores 503 of the second group of kinematic pairs 500 and the second inner arc cores 603 of the third group of kinematic pairs 600.
In the present invention, the two arc-shaped water passing channels 702 are formed by rotating with a constant circular section.
Finally, the above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields using the contents of the present specification and the attached drawings are included in the scope of the present invention.
Claims (6)
1. A sequential rotation core-pulling die for a double-inner-arc tee joint is mainly applied to sequential core-pulling and demolding of a split tee joint with a double-inner-arc form and comprises a movable die (100) and a fixed die (200), wherein the movable die (100) and the fixed die (200) are connected in a sliding fit mode through a guide column (300), and three groups of kinematic pairs are arranged on the movable die (100) in a T shape and are respectively communicated with a double-inner-arc tee joint movable die cavity (101) arranged on the movable die (100) and a double-inner-arc tee joint fixed die cavity (201) arranged on the fixed die (200) correspondingly; the method is characterized in that:
the three groups of kinematic pairs are respectively a first group of kinematic pairs (400) arranged on the right side or the left side of the movable mold (100), a second group of kinematic pairs (500) arranged on the left side or the right side of the movable mold (100) and a third group of kinematic pairs (600) arranged on the front side or the rear side of the movable mold (100);
the first group of kinematic pairs (400), the second group of kinematic pairs (500) and the third group of kinematic pairs (600) are arranged on the movable mold (100) in a T shape and are respectively communicated with the double-inner-arc three-way movable mold cavity (101) and the double-inner-arc three-way fixed mold cavity (201) correspondingly;
the first group of kinematic pairs (400) comprises a first sliding block (401), a first socket core (402), a first inner straight core (403) and a first oil cylinder (404); the first oil cylinder (404) is fixed on the right side or the left side of the double-inner-arc three-way movable mould cavity (101) through a first oil cylinder support (405), the driving end of the first oil cylinder (404) is connected with the first sliding block (401), the first sliding block (401) is connected with the first bell mouth mold core (402), the first bell mouth mold core (402) is connected with the first inner straight mold core (403), and the first sliding block (401) is in sliding fit with the first oil cylinder support (405);
the second group of kinematic pairs (500) comprises a second sliding block (501), a second socket core (502), a first inner arc core (503), a first inner arc core locking block (504), a first rotating block (505), a second oil cylinder (506), a first rack (507) and a first transmission gear (508); the second oil cylinder (506) is fixed on the left side or the right side of the double-inner-arc three-way movable model cavity (101) through a second oil cylinder support (509), the driving end of the second oil cylinder (506) is in meshed transmission connection with the first transmission gear (508) through a first rack (507), the first transmission gear (508) is fixed on the first rotating block (505), the first inner-arc core (503) is fixed on the first rotating block (505) through a first inner-arc core locking block (504), the second sliding block (501) is sleeved on the first inner-arc core (503) and is in sliding fit with the first rotating block (505), and the second socket core (502) is sleeved on the first inner-arc core (503) and is fixedly connected with the second sliding block (501);
the third group of kinematic pairs (600) comprises a third sliding block (601), a third socket core (602), a second inner arc core (603), a second inner arc core locking block (604), a second rotating block (605), a third oil cylinder (606), a second rack (607) and a second transmission gear (608); the third oil cylinder (606) is fixed to the front side or the rear side of the double-inner-arc three-way movable mould cavity (101) through a third oil cylinder support (609), the driving end of the third oil cylinder (606) is in meshed transmission connection with the second transmission gear (608) through a second rack (607), the second transmission gear (608) is fixed to the second rotating block (605), the second inner-arc core (603) is fixed to the second rotating block (605) through a second inner-arc core locking block (604), the third sliding block (601) is sleeved on the second inner-arc core (603) and is in sliding fit with the second rotating block (605), and the third bell mouth core (602) is sleeved on the second inner-arc core (603) and is fixedly connected with the third sliding block (601).
2. The sequential rotation core-pulling die for the double-inner-arc tee joint according to claim 1, wherein: the second sliding block (501) is further provided with a first oblique pry bar sliding groove (501a), and the first oblique pry bar sliding groove (501a) is matched with a first oblique pry bar (202) arranged on the double-inner-arc three-way fixed die cavity (201).
3. The sequential rotation core-pulling die for the double-inner-arc tee joint according to claim 1, wherein: and a second oblique pry bar sliding groove (601a) is further formed in the third sliding block (601), and the second oblique pry bar sliding groove (601a) is matched with a second oblique pry bar (203) arranged on the double-inner-arc three-way fixed die cavity (201).
4. A use method of the sequential rotation core-pulling mold for the double inner arc tee joint based on any one of claims 1 to 3, characterized in that: comprises the following steps:
step 1, when a double-inner-arc three-way mold is used for injecting glue on an injection molding machine to fill a double-inner-arc three-way movable mold cavity (101) of a movable mold (100) and a double-inner-arc three-way fixed mold cavity (201) of a fixed mold (200), and after injection molding of the double-inner-arc three-way mold is completed, the mold is opened, a first inclined pry bar (202) and a second inclined pry bar (203) on the fixed mold (200) respectively and correspondingly drive a second slide block (501) of a second group of kinematic pairs (500) on the movable mold (100) and a third slide block (601) of a third group of kinematic pairs (600) to slide on a first rotating block (505) and a second rotating block (605) which respectively correspond to each other, and drive a second socket mold core (502) and a third socket mold core (602) which respectively correspond to be separated from the injection molded double-inner-arc three-way (;
step 2, feeding oil into a first oil cylinder (404) of a first group of kinematic pairs (400) to drive a first bell mouth core (402) and a first inner straight core (403) which are fixed on a first sliding block (401) to move, so that the first bell mouth core (402) and the first inner straight core (403) of the first group of kinematic pairs (400) are completely separated from a double inner arc tee joint (700), and simultaneously, a demolding space for rotationally separating the double inner arc tee joint (700) is provided for the first inner arc core (503) of the second group of kinematic pairs (500);
step 3, feeding oil into a second oil cylinder (506) of the second group of kinematic pairs (500) to drive a first rack (507) to move, driving a first transmission gear (508) through the first rack (507) to drive a first rotating block (505) to rotate, driving a first inner arc mold core (503) fixed on the first rotating block (505) through a first inner arc mold core locking block (504) to rotate along with the first rotating block (505), so that a second bell mouth mold core (502) and the first inner arc mold core (503) of the second group of kinematic pairs (500) are completely separated from the double inner arc tee (700), and meanwhile, providing a demolding space for the second inner arc mold core (603) of the third group of kinematic pairs (600) to rotatably separate from the double inner arc tee (700);
step 4, feeding oil into a third oil cylinder (606) of a third group of kinematic pairs (600) to drive a second rack (607) to move, driving a second transmission gear (608) to drive a second rotating block (605) to rotate through the second rack (607), and driving a second inner arc mold core (603) fixed on the second rotating block (605) through a second inner arc mold core locking block (604) to rotate along with the second rotating block (605), so that a third bell mouth mold core (602) and the second inner arc mold core (603) of the third group of kinematic pairs (600) are completely separated from the double inner arc tee joint (700);
step 5, ejecting the double-inner-arc tee joint (700) products subjected to the mold stripping of all the cores in the step 4 from the double-inner-arc tee joint movable mold cavity (101) to finish the mold stripping operation of the double-inner-arc tee joint (700);
step 6, during resetting, firstly driving a third oil cylinder (606) of the third group of kinematic pairs (600) to act, firstly pushing back the second rotating block (605) and parts on the second rotating block to reset, then driving a second oil cylinder (506) of the second group of kinematic pairs (500) to act, pushing back the first rotating block (505) and parts on the first rotating block to reset, then driving a first oil cylinder (404) of the first group of kinematic pairs (400) to act, pushing back the first sliding block (401) and parts on the first sliding block to reset, and finally closing the mold, wherein in the process of closing the mold, the fixed mold (200) gradually approaches to the movable mold (100) through the guide post (300) to press and close, meanwhile, the first inclined crowbar (202) and the second inclined crowbar (203) on the fixed mold (200) can completely push back the second sliding block (501) of the second group of kinematic pairs (500) and the third sliding block (601) of the third group of kinematic pairs (600) to reset, and the mold is completely closed, waiting for the next injection molding cycle.
5. The use method of the double-inner-arc tee joint sequentially-rotating core-pulling mold is characterized in that the double-inner-arc tee joint (700) comprises a straight water passing channel (701) and two arc water passing channels (702), the straight water passing channel (701) is matched with a first inner straight core (403) of the first group of kinematic pairs (400), and the two arc water passing channels (702) are respectively matched with a first inner arc core (503) of the second group of kinematic pairs (500) and a second inner arc core (603) of the third group of kinematic pairs (600).
6. The use method of the sequential rotation core-pulling mold for the double-inner-arc tee joint is characterized in that the two arc-shaped water passing channels (702) are formed by rotating with equal circular sections.
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| CN201910150771.1A CN109719903B (en) | 2019-02-28 | 2019-02-28 | Sequential rotation core-pulling mold for double-inner-arc tee joint and using method thereof |
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| CN201910150771.1A CN109719903B (en) | 2019-02-28 | 2019-02-28 | Sequential rotation core-pulling mold for double-inner-arc tee joint and using method thereof |
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Citations (3)
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|---|---|---|---|---|
| US5156864A (en) * | 1991-02-06 | 1992-10-20 | Guo Muh Juh | Plastics threaded fitting molding mechanism |
| JP2009184203A (en) * | 2008-02-05 | 2009-08-20 | Kanayama Seisakusho:Kk | Pipe joint, method of manufacturing pipe joint, and injection molding mold for manufacturing pipe joint |
| CN206230821U (en) * | 2016-11-22 | 2017-06-09 | 浙江伟星新型建材股份有限公司 | A kind of mould structure of deep camber three-way pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209289696U (en) * | 2019-01-07 | 2019-08-23 | 东莞市立航模具塑胶有限公司 | A kind of arc tee tube rotary core pulling demolding structure |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156864A (en) * | 1991-02-06 | 1992-10-20 | Guo Muh Juh | Plastics threaded fitting molding mechanism |
| JP2009184203A (en) * | 2008-02-05 | 2009-08-20 | Kanayama Seisakusho:Kk | Pipe joint, method of manufacturing pipe joint, and injection molding mold for manufacturing pipe joint |
| CN206230821U (en) * | 2016-11-22 | 2017-06-09 | 浙江伟星新型建材股份有限公司 | A kind of mould structure of deep camber three-way pipe |
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