CN112549449B - Mould structure of injection molding pipe fitting product - Google Patents
Mould structure of injection molding pipe fitting product Download PDFInfo
- Publication number
- CN112549449B CN112549449B CN202011436099.1A CN202011436099A CN112549449B CN 112549449 B CN112549449 B CN 112549449B CN 202011436099 A CN202011436099 A CN 202011436099A CN 112549449 B CN112549449 B CN 112549449B
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- core
- sliding block
- mold
- insert
- upper cavity
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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
- B29C45/2602—Mould construction elements
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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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
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mould structure for injection molding of a pipe fitting product, which comprises an upper cavity template, an upper cavity, a lower cavity template and a lower cavity; an insert mold core is arranged on the upper mold cavity, and an insert is arranged on the insert mold core; the lower cavity template is provided with a sliding seat, the sliding seat is provided with a linear core and an arc core, and the linear core is fixed on a first core sliding block; the arc core is provided with a core sliding block II, the core sliding block II is fixed on a sliding seat through a positioning shaft and a supporting rotary seat, the sliding seat is provided with a rack, the rack is connected with a rack mechanism sliding block, and the positioning shaft is provided with a gear wheel, so that the arc core positioning device has the beneficial effects that: the insert is arranged on the upper cavity through the insert core, the upper cavity and the upper cavity template jointly form a fixed die structure, and the problem that the mold core is damaged and scrapped easily due to the fact that the traditional insert is arranged on a movable die and is separated from the installation position due to the fact that the movable die moves under the action of the motion inertia is solved.
Description
Technical Field
The invention relates to the technical field of injection molding pipe fitting molds, in particular to a mold structure for injection molding a pipe fitting product.
Background
Insert molding is a molding method in which a predetermined insert made of a different material is placed in a mold, a resin is injected, and the molten material is bonded to the insert and solidified to form an integrated product. The inserts installed in the die generally lack a positioning mechanism, and the main reasons are that the integral structure of the insert part is small and the inserts cannot be installed or the product structure is limited. The insert mounting part of the conventional mould is arranged on a movable mould, the mould can pause in the mould closing process during injection, the insert mounted on the movable mould can move due to the inertia effect and is separated from the mounting position, so that the mould core is easily damaged and scrapped, the insert mounting part is designed to a fixed mould by the novel structure, the problem that the insert moves due to the fact that the insert is not loosened due to the fact that a positioning machine is not provided in the mould moving process is solved, and the mould damage caused by the fact that the insert is loosened is avoided; in addition, the conventional mold structure core is not cooled by a cooling water path, air cooling is adopted, the production period is longer, and if cooling by the cooling water path is adopted, the half forming period can be shortened on the basis of air cooling. Therefore, the invention provides a new structure mould for the injection molding pipe fitting backwater ring product, which can solve the problem of the pipe fitting product.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a mold structure for injection molding of a pipe fitting product, which is reasonable in structural design.
The technical scheme of the invention is as follows:
the mold structure for injection molding of pipe fitting products is characterized by comprising an upper cavity mold plate, an upper cavity, a lower cavity mold plate and a lower cavity, wherein the bottom of the upper cavity mold plate is provided with an inclined guide post, the side of the upper cavity mold plate is provided with a special-shaped guide chute, and a special-shaped guide post penetrates through the upper cavity mold plate; an insert mold core is arranged on the upper cavity, and an insert is arranged on the insert mold core; the lower cavity template is provided with a sliding seat, the sliding seat is provided with a linear core and an arc core, the linear core is fixed on a first core sliding block, and the first core sliding block is provided with a hydraulic oil cylinder and is driven by the hydraulic oil cylinder; the arc core is provided with a core sliding block II, the core sliding block II is fixed on the sliding seat through a positioning shaft and a supporting rotary seat, the sliding seat is provided with a rack, the rack is connected with a rack mechanism sliding block, the positioning shaft is provided with a gear, the gear is meshed with the rack, and the rack mechanism sliding block can drive the rack and the gear to move under the action of the special-shaped guide post after the mold is opened, so that the core sliding block II rotates.
The mould structure of the injection molding pipe fitting product is characterized in that the linear core is provided with two cooling water paths I, and outlets of the two cooling water paths I are communicated and used for circularly cooling the linear core; and two cooling water paths II are arranged on the arc-shaped core, and the outlets of the two cooling water paths II are communicated, so that the arc-shaped core is circularly cooled.
The die structure of the injection molding pipe product is characterized in that the sliding seat is arranged on the lower cavity die plate in a sliding fit mode, two sides of the sliding seat are matched with the special-shaped guide sliding grooves through the bearings, and after the die is opened, the plastic product is separated through relative movement of the sliding seat and the special-shaped guide sliding grooves.
The mould structure for injection molding of the pipe fitting product is characterized in that the rack mechanism sliding block is provided with a mounting hole matched with the special-shaped guide post, so that the rack mechanism sliding block moves along the special-shaped guide post.
The mould structure of the injection molding pipe product is characterized in that one end of the inclined guide pillar is fixed at the bottom of the upper cavity mould plate, and the other end of the inclined guide pillar penetrates through the second core slide block.
The mould structure of the injection molding pipe fitting product is characterized in that the hydraulic oil cylinder is fixed on the side part of the sliding seat through an oil cylinder mounting plate.
The beneficial effects of the invention are:
1) The insert is arranged on the upper cavity through the insert core, the upper cavity and the upper cavity template jointly form a fixed die structure, and the problem that the mold core is damaged and scrapped easily due to the fact that the traditional insert is arranged on a movable die and is separated from the installation position due to the fact that the movable die moves under the action of the movement inertia of the movable die is solved.
2) The core of the backwater ring is integrally and jointly formed by the linear core and the circular arc core, is different from the traditional core with the splicing structure, and simultaneously redesigns the core pulling mode of the linear core and the circular arc core, thereby improving the working efficiency of the die.
3) Because the linear mold core and the circular arc mold core are of two-part integral structure, a cooling water cooling mode is introduced to the linear mold core and the circular arc mold core respectively, and the heat dissipation efficiency and effect of the mold core are effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;
FIG. 2 is a schematic diagram of the upper cavity mold plate structure of the present invention;
FIG. 3 is a schematic view of the insert and insert core configuration of the present invention;
FIG. 4 is a schematic view of the lower cavity mold plate of the present invention;
FIG. 5 is a schematic view of a slider structure according to the present invention;
FIG. 6 is a schematic view of the structure of the profiled guide chute of the present invention;
FIG. 7 is a schematic view of the structure of the shaped guide post according to the present invention;
FIG. 8 is a view of the rack and pinion arrangement of the present invention;
FIG. 9 is a schematic view of a radius core configuration of the present invention;
FIG. 10 is a schematic view of a straight-line core configuration of the present invention;
FIG. 11 is a schematic view of the product structure of the water return ring of the present invention;
FIG. 12 is a schematic view illustrating an open state of the present invention;
FIG. 13 is a schematic view of a straight core pulling configuration of the present invention;
FIG. 14 is a schematic view of the arc core rotating core pulling state of the present invention;
FIG. 15 is a schematic view of the entire core-pulling state of the sliding seat according to the present invention;
in the figure: 1-upper cavity template, 2-upper cavity, 3-inclined guide post, 4-special-shaped guide chute, 5-special-shaped guide post, 6-slide seat, 7-arc core, 8-linear core, 9-core slide block I, 10-core slide block II, 11-lower cavity, 12-lower cavity template, 13-mold foot, 14-press plate, 15-hydraulic oil cylinder, 17-rack, 18-rack mechanism slide block, 19-gear, 21-positioning shaft, 22-rotary seat, 23-insert, 24-insert core and 25-backwater ring product.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 11, a mold structure for injection molding of a pipe product comprises an upper cavity mold plate 1, an upper cavity 2, an inclined guide post 3, a special-shaped guide chute 4, a special-shaped guide post 5, a slide seat 6, an arc mold core 7, a linear mold core 8, a first mold core slide block 9, a second mold core slide block 10, a lower cavity mold plate 11, a lower cavity mold plate 12, mold feet 13, a press plate 14, a hydraulic oil cylinder 15, a rack 17, a rack mechanism slide block 18, a gear 19, a positioning shaft 21, a supporting rotary seat 22, an insert 23, an insert mold core 24 and a water return ring product 25.
A mould structure of an injection molding pipe product is horizontally arranged in actual production; the die specifically comprises an upper cavity template 1, an upper cavity 2, a lower cavity template 12 and a lower cavity 11; wherein the upper cavity template 1 and the upper cavity 2 form a fixed mold, and the lower cavity template 12 and the lower cavity 11 form a movable mold.
An inclined guide pillar 3 is arranged at the bottom of the upper cavity template 1, one end of the inclined guide pillar 3 is fixed at the bottom of the upper cavity template 1, and the other end of the inclined guide pillar 3 penetrates through the second core slider 10; the side part of the upper cavity template 1 is provided with a special-shaped guide chute 4, and a special-shaped guide column 5 penetrates through the upper cavity template 1; an insert core 24 is arranged on the upper cavity 2, an insert 23 is arranged on the insert core 24, and the insert 23 is generally a metal insert; the lower cavity template 12 is provided with a sliding seat 6, the sliding seat 6 is provided with an arc core 7 and a linear core 8, namely, the semicircular part of the backwater ring product 25 is formed by the arc core 7 and the linear core 8.
The arc-shaped mold core 7 is fixed on a first mold core sliding block 9, a hydraulic oil cylinder 15 is arranged on the first mold core sliding block 9, and the hydraulic oil cylinder 15 is fixed on the side part of the sliding seat 6 through an oil cylinder mounting plate and driven through the hydraulic oil cylinder 15.
The linear mold core 8 is provided with a second mold core sliding block 10, the second mold core sliding block 10 is fixed on the sliding seat 6 through a positioning shaft 21 and a supporting seat 22, the sliding seat 6 is provided with a rack 17, the rack 17 is connected with a rack mechanism sliding block 18, the positioning shaft 21 is provided with a gear 19, the gear 19 is meshed with the rack 17, and after mold opening, the rack mechanism sliding block 18 can drive the rack 17 and the gear 19 to move under the action of the special-shaped guide column 5, so that the second mold core sliding block 10 rotates.
Two cooling water ways I701 are arranged on the arc core 7, and outlets of the two cooling water ways I701 are communicated, so that the arc core 7 is cooled circularly; and two cooling water channels 801 are arranged on the linear core 8, and outlets of the two cooling water channels 801 are communicated, so that the linear core 8 is cooled circularly. And outlets of the two cooling water paths I701 and the two cooling water paths II 801 are respectively a water inlet and a water outlet, and the water inlets and the water outlets are respectively provided with water nozzles and communicated through U-shaped pipe fittings so as to realize cooling water circulation.
The slide seat 6 is arranged on the lower cavity template 12 in a sliding fit manner, two sides of the slide seat 6 are matched with the special-shaped guide sliding groove 4 through a bearing, and after the mold is opened, the plastic product is separated through the relative movement of the slide seat 6 and the special-shaped guide sliding groove 4.
The rack mechanism slider 18 is provided with a mounting hole which is fitted with the shaped guide post 5, so that the rack mechanism slider 18 moves along the shaped guide post 5 (the horizontal distance of movement of the rack mechanism slider 18 is determined by the shape of the shaped guide post 5).
As shown in fig. 12-15, the mold production process proceeds as follows, through the injection molding cycle, and then to the mold opening stage.
1. In the process of opening the die to 80mm to 100mm, the following steps are completed, in the process of opening the die, the movable die moves, the inclined guide post slides out of the second core slide block, the insert core is separated from the insert at the moment, and the first core slide block is drawn out through the hydraulic oil cylinder;
2. and then continuing to open the mold until the mold is opened (260 mm), wherein the following steps are completed in the process of opening the mold in the process of the stroke, firstly utilizing the special-shaped guide post to drive the gear and the rack to move, and driving the core slide block II to rotate for 90 degrees while driving the arc core to rotate for 90 degrees so as to rotate the arc core out of the bending of the plastic product, then utilizing the special-shaped guide post to drive the rack mechanism slide block to ascend (from the angle of figure 4, the horizontal movement is realized), so that the whole slide block ascends, further leading the core slide block II to ascend together with the arc core and separate from the plastic product, and then demolding through the ejector pins to complete the whole operation action.
Claims (3)
1. The mold structure for injection molding of pipe products is characterized by comprising an upper cavity template (1), an upper cavity (2), a lower cavity template (12) and a lower cavity (11), wherein an inclined guide post (3) is arranged at the bottom of the upper cavity template (1), a special-shaped guide chute (4) is arranged at the side part of the upper cavity template (1), and a special-shaped guide post (5) penetrates through the upper cavity template (1); an insert core (24) is arranged on the upper cavity (2), and an insert (23) is arranged on the insert core (24); a sliding seat (6) is arranged on the lower cavity template (12), an arc core (7) and a linear core (8) are arranged on the sliding seat (6), the arc core (7) is fixed on a core sliding block I (9), a hydraulic oil cylinder (15) is arranged on the core sliding block I (9), and the core sliding block I is driven by the hydraulic oil cylinder (15); a second core sliding block (10) is arranged on the linear core (8), the second core sliding block (10) is fixed on the sliding seat (6) through a positioning shaft (21) and a supporting rotary seat (22), a rack (17) is arranged on the sliding seat (6), a rack mechanism sliding block (18) is connected onto the rack (17), a gear (19) is arranged on the positioning shaft (21), the gear (19) is meshed with the rack (17), and after the mold is opened, the rack mechanism sliding block (18) can drive the rack (17) and the gear (19) to move under the action of the special-shaped guide column (5), so that the second core sliding block (10) rotates; the rack mechanism sliding block (18) is provided with a mounting hole matched with the special-shaped guide post (5), so that the rack mechanism sliding block (18) moves along the special-shaped guide post (5); one end of the inclined guide post (3) is fixed at the bottom of the upper cavity template (1), and the other end of the inclined guide post penetrates through the second core sliding block (10); the sliding seat (6) is arranged on the lower cavity template (12) in a sliding fit mode, two sides of the sliding seat (6) are matched with the special-shaped guide sliding groove (4) through a bearing, and after the mold is opened, the plastic product is separated through the relative movement of the sliding seat (6) and the special-shaped guide sliding groove (4).
2. The mold structure of an injection molding pipe fitting product according to claim 1, characterized in that the arc core (7) is provided with two cooling water paths I (701), and outlets of the two cooling water paths I (701) are communicated and used for circularly cooling the arc core (7); and two cooling water paths II (801) are arranged on the linear mold core (8), and outlets of the two cooling water paths II (801) are communicated, so that the linear mold core (8) is cooled circularly.
3. The mold structure for injection molding of a pipe product according to claim 1, wherein the hydraulic cylinder (15) is fixed to the side of the slide (6) by a cylinder mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436099.1A CN112549449B (en) | 2020-12-10 | 2020-12-10 | Mould structure of injection molding pipe fitting product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436099.1A CN112549449B (en) | 2020-12-10 | 2020-12-10 | Mould structure of injection molding pipe fitting product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112549449A CN112549449A (en) | 2021-03-26 |
| CN112549449B true CN112549449B (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011436099.1A Active CN112549449B (en) | 2020-12-10 | 2020-12-10 | Mould structure of injection molding pipe fitting product |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116619697B (en) * | 2023-05-04 | 2024-02-27 | 青岛海瑞德模塑有限公司 | Large-stroke back-off demoulding structure and injection molding machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07290590A (en) * | 1994-04-26 | 1995-11-07 | Sekisui Chem Co Ltd | Manufacture of flanged resin lined bend |
| JP2008143020A (en) * | 2006-12-11 | 2008-06-26 | Hoya Corp | Mold mechanism of injection molding and usage thereof |
| CN101811339B (en) * | 2009-02-19 | 2012-06-13 | 浙江凯华模具有限公司 | Plastic die of cambered elbow pipe of 90 degrees |
| CN103223715B (en) * | 2013-04-27 | 2015-08-19 | 永高股份有限公司 | 90 ° of water pipe elbow mould emptiers of large radian corner |
| CN110757738B (en) * | 2019-10-30 | 2021-10-12 | 临海伟星新型建材有限公司 | Automatic demolding mold structure for glue feeding of submersible core |
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