CN111196016A - Thermoplastic phenolic resin forming die - Google Patents
Thermoplastic phenolic resin forming die Download PDFInfo
- Publication number
- CN111196016A CN111196016A CN201911387903.9A CN201911387903A CN111196016A CN 111196016 A CN111196016 A CN 111196016A CN 201911387903 A CN201911387903 A CN 201911387903A CN 111196016 A CN111196016 A CN 111196016A
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- CN
- China
- Prior art keywords
- hole
- square
- die
- cutter
- phenolic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005011 phenolic resin Substances 0.000 title claims abstract description 29
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229920001568 phenolic resin Polymers 0.000 title claims abstract description 28
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 28
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000009757 thermoplastic moulding Methods 0.000 claims 3
- 238000003825 pressing Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
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
- B29C45/38—Cutting-off equipment for sprues or ingates
-
- 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
-
- 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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C2045/384—Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel
Abstract
The invention discloses a thermoplastic phenolic resin forming die which has the advantages of few parts, simple structure, convenient die manufacture, low cost and large cutting force, and at least two cutters are driven by an oil cylinder to simultaneously cut a pouring gate. The die is characterized in that grooves are formed in two sides of an upper die plate in the die, a door-shaped pressing plate is arranged in each groove, an oblique T-shaped groove is formed in the front end portion of each door-shaped pressing plate, each oblique T-shaped groove is movably connected with a T-shaped hook head arranged at the rear end of a cutter bar, the rear end of each door-shaped pressing plate is connected with a piston rod of an oil cylinder, and each oil cylinder is connected with the upper die plate. The front end of the cutter rod is provided with a cutting edge, and the cutter rod is sleeved on the cavity plate and the square through hole A, the square through hole B and the square through hole C which are arranged on the upper template. When the pressure maintaining of the press is finished, the oil cylinder works to drive the piston rod to move forwards, and the cutter bar connected with the door-shaped pressing plate is driven to move downwards to generate pressure to cut off the pouring gate. After the sprue is cut off, the oil cylinder is reset, and the cutter rod is retracted. The mold is opened to take out the molded article without the gate.
Description
Technical Field
The invention relates to the technical field of dies, in particular to the technical field of thermoplastic phenolic resin forming dies.
Background
The thermoplastic phenolic resin has the advantages of high heat resistance, good electrical insulation, difficult deformation under pressure, stable size of a formed product and wide application in the electrical appliance industry. With the improvement of the quality requirement of electric products, the solid-state bulk materials using the thermoplastic phenolic resin are increasingly processed by using a die. The prior mold for processing solid pellets of the thermoplastic phenolic resin by a transfer method does not have the function of removing a sprue in the mold, and when a product formed by the thermoplastic phenolic resin in the mold is connected with the sprue, the sprue is removed after the product is taken out of the mold, and the sprue is removed manually or mechanically. In particular, the phenolic novolak resin filled with the reinforcing material has high hardness and strength in a cold state after the product is cured, which are much higher than those of the thermoplastic plastics. When the operation of manually removing the thermoplastic phenolic resin sprue is troublesome, time and labor are wasted, the production cost is increased, the sprue is difficult to be leveled and smooth when being removed, and the quality and the attractive appearance of the product are ensured. The cost of removing such gates by machine is high, and different removing tools and tooling mechanisms are required to be processed for removing the gates of various products.
Chinese patent No. ZL201410383839.8 issued by the authority of 26.4.2017 discloses an in-mold cutting auxiliary mechanism, which is applied to a mold for thermoplastic injection molding, and only cuts off a gate of a plastic product in a mold. The thermoplastic has low hardness and strength, and the in-mold cutting auxiliary mechanism can cut off the pouring gate. The auxiliary mechanism comprises an auxiliary exhaust body, a driving cylinder, a support block body, a moving block, a cutter seat, a locking screw, an ejector pin rod, a cutter body, a circular cutter body and the like, but the auxiliary mechanism has the defects of more component parts, complex structure and troublesome manufacture, and needs to cut a sprue and be matched with an auxiliary mechanism, so that the mold processing cost is high.
Compared with thermoplastic plastics, the thermoplastic phenolic resin has higher hardness and better toughness, and a removal mechanism with large cutting force is needed to cut off the pouring gate, so that a mechanism which has fewer parts, simple structure, convenient manufacture, low mold cost and large cutting force and can automatically cut off the pouring gate when the thermoplastic phenolic resin with large cutting force is used for producing products in a transfer method forming mold is needed to be developed, so that the defects of the existing thermoplastic phenolic resin transfer method forming mold technology are overcome, and the production efficiency of the thermoplastic phenolic resin forming process is improved.
Disclosure of Invention
The invention provides a thermoplastic phenolic resin forming die which has the advantages of few parts, simple structure, convenient die manufacture, low cost and large cutting force, and at least two cutters are driven by one driving oil cylinder to simultaneously cut a pouring gate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a thermoplastic phenolic resin forming die, includes the mould, last mould in the mould includes bottom plate, cope match-plate pattern central point is equipped with sunken position, cavity board A is inlayed at sunken position, cavity board A central point is equipped with die joint, its characterized in that: parting surface one side is equipped with two through-hole A that are separated by certain distance, and its opposite side is equipped with the through-hole B that corresponds through-hole A, the cope match-plate pattern is equipped with the through-hole C that corresponds through-hole A, through-hole B position, be equipped with the cutter arbor in through-hole A, through-hole B, the through-hole C and do reciprocating, the cutter arbor front end is equipped with the cutting edge, the cutter arbor rear end is equipped with T type gib head, the cope match-plate pattern both sides are equipped with the recess, the recess is equipped with door font clamp plate, the preceding tip position of door font clamp plate is equipped with and is oblique T type groove, be the T type gib head that oblique T type groove swing joint cutter arbor rear end was equipped with, the piston rod of fixed plate is crossed to the cover of the back tip position fixed connection hydro-cylinder of door font clamp plate, hydro-cylinder.
Preferably, the through hole A, the through hole B and the through hole C are square, and the side length of each of the square through hole A and the square through hole B is at least 4 millimeters smaller than that of each of the square through hole C.
Preferably, the cutting bar is square, and the length of each side of the part of the square cutting bar passing through the through hole A and the through hole B is at least 4 mm smaller than that of each side of the part passing through the through hole C.
Preferably, the fit tolerance of the parts of the cutter bar, which are arranged on the through holes A and B, is plus or minus 0.02 mm.
The thermoplastic phenolic resin forming die has the beneficial effects that: the upper die in the thermoplastic phenolic resin forming die is provided with a mechanism for automatically cutting off the pouring gate, so that after the thermoplastic phenolic resin is formed and processed in the forming die, the pouring gate is automatically cut off in the die to obtain a finished product without the pouring gate, and the finished product is discharged, thereby improving the forming and processing efficiency of the die. The mechanism only comprises the cutter bar, the pressing plate and the driving oil cylinder, and parts formed by the mechanism are few, so that the processing is convenient, the assembly is convenient, the manufacturing cost is reduced, and the production cost of the die is also reduced. At least two cutters are driven by one oil cylinder, so that the cutters for cutting off the sprue of the multi-cavity die can perform cutting-off work under the control of one driving oil cylinder, and resources for providing power for the cutters are saved. The use of the oil cylinder can obtain large pressure because the thermoplastic phenolic resin has high hardness and high toughness, and the volume of the oil cylinder is relatively small, so that the whole weight of the die is reduced. The mechanism for automatically cutting off the pouring gate is arranged in the thermoplastic phenolic resin forming die, so that the technical problem that the pouring gate of a finished product formed by the conventional thermoplastic phenolic resin needs to be manually removed is solved, the production efficiency of the finished product of the thermoplastic phenolic resin forming die is improved, the quality of the finished product is improved, and the economic benefit of an enterprise is increased.
Drawings
FIG. 1 is a schematic view of the overall mold of the present invention.
Fig. 2 is a schematic view of the structure of the upper mold of the mold of fig. 1.
Fig. 3 is a schematic view of the structure of the cutter bar.
Fig. 4 is a schematic view of the structure of the platen.
Detailed Description
As shown in fig. 1 to 4, in one embodiment of the mold for molding a phenol resin thermoplastic resin according to the present invention, the mold is a four-part mold, but may be a six-part mold, an eight-part mold, or the like. The thermoplastic phenolic resin forming die comprises a die 1, wherein an upper die 2 in the die 1 comprises a bottom plate 3 and an upper die plate 4, a concave part 5 is arranged at the center part of the upper die plate 4, a cavity plate A6 is embedded in the concave part 5, a parting surface 7 is arranged at the center part of a cavity plate A6, at least two square through holes A8 which are separated by a certain distance are arranged on one side of the parting surface 7, a square through hole B9 which corresponds to the square through hole A8 is arranged on the other side of the parting surface, and the upper die plate 4 is provided with a square through hole C10 which corresponds to the square through hole A8 and the square through hole B9. The square through hole A8 and the square through hole B9 are communicated with the square through hole C10, and the side length of each of the square through hole A8 and the square through hole B9 is 4 mm shorter than that of each of the square through hole C10.
The square-shaped cutting knife rod 11 is square, a knife edge 11-1 is arranged at the front end of the square-shaped cutting knife rod 11, a T-shaped hook 11-2 is arranged at the rear end of the square-shaped cutting knife rod 11, and each side length of the part of the square-shaped cutting knife rod 11 passing through the square through hole A8 and the square through hole 9B is 4 mm shorter than each side length of the part of the square through hole C. The fit tolerance of the square cutter rod 11 passing through the square through hole A8 and the square through hole B9 is plus or minus 0.02 mm. Therefore, the square cutter bar is accurately guided and positioned when moving up and down, and no flash is generated during the forming processing of the phenolic resin.
Two sides of the upper template 4 are provided with grooves 4-1, the grooves 4-1 are provided with door-shaped pressing plates 12, the front end parts of the door-shaped pressing plates 12 are provided with inclined T-shaped grooves 12-1, and the inclined T-shaped grooves 12-1 are movably connected with T-shaped hook heads 11-2 arranged at the rear ends of square cutter bars 11. The rear end part of the door-shaped pressing plate 12 is fixedly connected with a piston rod of an oil cylinder 13 through a screw, the piston rod is sleeved on a fixing plate 14, the oil cylinder 13 is fixedly connected with the fixing plate 14 through a screw, and the fixing plate 14 is fixedly connected with the upper template 4 through a screw.
When the oil cylinder drives the piston rod to move forwards, the piston rod drives the door-shaped pressing plate to move forwards in the groove, and at the moment, the inclined T-shaped groove in the door-shaped pressing plate pushes the cutter rod connected with the T-shaped hook head to move downwards to generate pressure to cut off the sprue. When the oil cylinder drives the piston rod to move backwards, the piston rod drives the door-shaped pressing plate to move backwards in the groove, and at the moment, the oblique T-shaped groove in the door-shaped pressing plate drives the cutter rod connected through the T-shaped hook head to move upwards to reset.
And controlling the work of the oil cylinder and the communication of the press, starting the oil cylinder to work when the pressure maintaining of the press is finished, driving a piston rod to move forwards by the oil cylinder, and pushing a T-shaped groove in the door-shaped pressing plate to move downwards by a cutter rod connected with a T-shaped hook head to generate pressure to cut off a pouring gate. After the sprue is cut off, the oil cylinder drives the piston rod to drive the door-shaped pressing plate to move backwards in the groove, and at the moment, an inclined T-shaped groove in the door-shaped pressing plate drives the cutter rod connected through the T-shaped hook head to move upwards to reset. The press performs the mold closing and opening operation to perform the press forming operation, and the cylinder also performs the gate cutting and resetting operation.
Claims (4)
1. The utility model provides a thermoplastic phenolic resin forming die, includes the mould, last mould in the mould includes bottom plate, cope match-plate pattern central point is equipped with sunken position, cavity board A is inlayed at sunken position, cavity board A central point is equipped with die joint, its characterized in that: storage cavity one side is equipped with two through-hole A that are separated by certain distance, and its opposite side is equipped with the through-hole B that corresponds through-hole A, the cope match-plate pattern is equipped with the through-hole C that corresponds through-hole A, through-hole B position, be equipped with the cutter arbor in through-hole A, through-hole B, the through-hole C and do reciprocating, the cutter arbor front end is equipped with the cutting edge, the cutter arbor rear end is equipped with T type gib head, the cope match-plate pattern both sides are equipped with the recess, the recess is equipped with door font clamp plate, the preceding tip position of door font clamp plate is equipped with and is oblique T type groove, be the T type gib head that oblique T type groove swing joint cutter arbor rear end was equipped with, the piston rod of fixed plate is crossed to the cover of the back tip position fixed connection hydro-cylinder of door font clamp plate, hydro-cylinder.
2. The phenolic resin thermoplastic molding die of claim 1, wherein: the through hole A, the through hole B and the through hole C are square, and the side length of each of the square through hole A and the square through hole B is at least 4 millimeters smaller than that of each of the square through hole C.
3. The phenolic resin thermoplastic molding die of claim 1, wherein: the square-shaped cutter rod is square, and the side length of each part of the square-shaped cutter rod passing through the through hole A and the through hole B is at least 4 millimeters smaller than that of each part passing through the through hole C.
4. The phenolic resin thermoplastic molding die of claim 1, wherein: the through hole A and the through hole B are provided with the cutter bar, and the matching tolerance of the parts of the cutter bar is plus or minus 0.02 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387903.9A CN111196016A (en) | 2019-12-19 | 2019-12-19 | Thermoplastic phenolic resin forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387903.9A CN111196016A (en) | 2019-12-19 | 2019-12-19 | Thermoplastic phenolic resin forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111196016A true CN111196016A (en) | 2020-05-26 |
Family
ID=70741669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911387903.9A Pending CN111196016A (en) | 2019-12-19 | 2019-12-19 | Thermoplastic phenolic resin forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111196016A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0994851A (en) * | 1995-09-29 | 1997-04-08 | Ntn Corp | Apparatus for injection molding and seal ring |
| CN1547524A (en) * | 2002-07-24 | 2004-11-17 | ������������ʽ���� | Resin molding machine |
| CN107020725A (en) * | 2017-05-18 | 2017-08-08 | 宁波双林模具有限公司 | An a kind of mould has more the automatic material cutting device of two plate injection molds |
| WO2017140086A1 (en) * | 2016-02-17 | 2017-08-24 | 上海小糸车灯有限公司 | Automatic sprue cutting mechanism of injection mould |
| CN108327192A (en) * | 2018-01-17 | 2018-07-27 | 共聚生化科技（昆山）有限公司 | In-mould edge gate automatic-shearing device |
-
2019
- 2019-12-19 CN CN201911387903.9A patent/CN111196016A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0994851A (en) * | 1995-09-29 | 1997-04-08 | Ntn Corp | Apparatus for injection molding and seal ring |
| CN1547524A (en) * | 2002-07-24 | 2004-11-17 | ������������ʽ���� | Resin molding machine |
| WO2017140086A1 (en) * | 2016-02-17 | 2017-08-24 | 上海小糸车灯有限公司 | Automatic sprue cutting mechanism of injection mould |
| CN107020725A (en) * | 2017-05-18 | 2017-08-08 | 宁波双林模具有限公司 | An a kind of mould has more the automatic material cutting device of two plate injection molds |
| CN108327192A (en) * | 2018-01-17 | 2018-07-27 | 共聚生化科技（昆山）有限公司 | In-mould edge gate automatic-shearing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200526 |