CN210211180U - Injection mold for packing carton - Google Patents
Injection mold for packing carton Download PDFInfo
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- CN210211180U CN210211180U CN201920774242.4U CN201920774242U CN210211180U CN 210211180 U CN210211180 U CN 210211180U CN 201920774242 U CN201920774242 U CN 201920774242U CN 210211180 U CN210211180 U CN 210211180U
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Abstract
The utility model discloses an injection mold for a packing box, which comprises an upper mold, an upper mold plate, a lower mold, a mold cavity, a base and upper and lower mold fixing columns, wherein the upper mold is connected on the upper mold plate, the upper mold plate is provided with an injection port, a mold cavity is formed between the upper mold and the lower mold, the upper and lower mold fixing columns are arranged on the base, the upper mold plate passes through the upper and lower mold fixing columns, the upper mold plate moves up and down along the upper and lower mold positioning columns, the injection port is also connected with a runner, the runner is connected with the upper mold cavity, an embedding block is also arranged in the mold cavity, the embedding block is fixedly connected with the lower mold, a negative pressure air suction port is arranged on the embedding block, the bottom of the embedding block is connected with a negative pressure pipeline, the lower mold is arranged on a mold foot, the mold foot is arranged on the base, an ejector rod, the defect of bubbles of the plastic part is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of mold, concretely relates to injection mold for packing carton.
Background
In industrial production, the importance of the mold is self-evident, plastic products produced by the mold not only have high production efficiency and high precision, but also can be made into any desired patterns and shapes, so the mold is quite important for the plastic products, most plastic products in life can not leave the mold, the most fatal defects in the molding production process should belong to plastic product bubbles, and once the bubbles are formed in the products, the appearance is influenced, and the integral structure and the strength are influenced, so most bubble defect products are scrapped, and resources are wasted.
The generation ways of the bubbles are various, not only the gas in the mould is not discharged completely, but also the curing speed caused by uneven temperature in the mould is different when the mould is heated, some local temperature is low and the curing is fast, the gas is cured without being discharged, and meanwhile, the bubbles can be generated in the molten plastic, in the prior art, the method which is usually adopted aiming at the bubble defect is to increase an exhaust pipeline, for example, the utility model with the patent number of CN201120324119.6 discloses an exhaust mechanism of an injection mould, which is arranged above a fixed seat in a core of the injection mould and comprises a columnar central exhaust block and a multilayer annular columnar exhaust block, the coaxial lines of the exhaust mechanism are sequentially arranged along the radial direction, and an exhaust gap is reserved between every two adjacent exhaust blocks; the bottom of the outermost annular columnar exhaust block is connected with an exhaust block fixing block and fixedly connected with the fixing seat; the bottom of each exhaust block is provided with a positioning groove at the joint of the fixing seat and the column body, and the column body of each exhaust block is also provided with a radially inwards sunken exhaust structure I or a radially inwards sunken exhaust structure II which are communicated with the exhaust gap respectively. The utility model discloses on the basis of original ejector pin clearance exhaust technique, adopt multi-level exhaust piece to increase exhaust clearance and guarantee exhaust effect, realize increase exhaust area, increase exhaust clearance, accelerate exhaust speed's purpose, but only get rid of the effect too poor to the bubble in the dead angle through increasing exhaust area, and increase too many exhaust holes and also correspondingly high to the manufacturing cost of mould.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art, the mould exhaust effect is poor, the inconvenient technical problem of injection molding in the die cavity take, the utility model discloses an exhaust effect is good, and the working of plastics take a convenient injection mold for packing carton.
The utility model provides a technical scheme that its technical problem adopted is: an injection mold for a packaging box comprises an upper mold, an upper mold plate, a lower mold, a mold cavity, a base and upper and lower mold fixing columns, wherein the upper mold is connected to the upper mold plate, an injection port is formed in the upper mold plate, the mold cavity is formed between the upper mold and the lower mold, the upper and lower mold fixing columns are arranged on the base, the upper mold plate penetrates through the upper and lower mold fixing columns, the upper mold plate moves up and down along the upper and lower mold positioning columns, a runner is connected to the injection port and connected to the upper mold cavity, an embedding block is further arranged in the mold cavity and fixedly connected to the lower mold, a negative pressure air suction port is arranged on the embedding block, the bottom of the embedding block is connected to a negative pressure pipeline, the lower mold is arranged on a mold foot, the mold foot is arranged on the base, and a first ejection mechanism, a second ejection mechanism and a third ejection mechanism, the ejection mechanism is an ejector rod.
Preferably, the surface of the mosaic block is provided with two negative pressure air outlets, and the surface of the mosaic block is also provided with a layer of breathable hydrophobic membrane.
Preferably, the air-permeable hydrophobic membrane on the surface of the mosaic block is a polytetrafluoroethylene air-permeable hydrophobic membrane.
Preferably, the mosaic block sub-unit connection has the spliced pole, the spliced pole is provided with the screw thread for the surface, the lower mould mosaic block sets up and is provided with corresponding recess on the position, the recess internal surface is provided with the screw thread, the mosaic block is screwed up and is fixed on the lower mould, the spliced pole bottom is provided with gas connector a, gas connector a connects the negative pressure pipeline spliced pole, be provided with gas connector b and packing ring on the negative pressure pipeline spliced pole, negative pressure pipeline is connected to the negative pressure pipeline spliced pole.
Preferably, the ejector rod is arranged in the cylinder, a piston is arranged at the tail of the ejector rod, an air inlet is arranged at the tail of the cylinder, and the air inlet is connected with the cylinder and connected with the air pipe.
The beneficial effects of the utility model are that, place the rotation of the inserts in the die cavity in the lower mould, set up the negative pressure exhaust hole in the inserts, set up two exhaust holes on the inserts surface to at the hydrophobic ventilated membrane of surface covering one deck, negative pressure pipeline is connected to the inserts bottom, lead to the negative pressure when moulding plastics and mould plastics, reduce the gas in the plastics, the hydrophobic ventilated membrane on surface can effectively prevent plastics to get into the exhaust hole simultaneously, adopts the ejecting working of plastics of vapour-pressure type's ejector pin, reduces manual operation simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the mosaic block of the present invention.
Fig. 3 is a schematic view of the push rod of the present invention.
In the figure, 1 is an injection molding port, 2 is a flow channel, 3 is an upper mold, 4 is a mold cavity, 5 is a lower mold, 6 is a mold foot, 7 is an upper mold plate, 8 is an inlay block, 9 is a bottom plate, 10 is a first ejector rod, 11 is a second ejector rod, 12 is a third ejector rod, 13 is a negative pressure pipeline, 14 is a cylinder connecting air pipe, 15 is a connecting column, 16 is a thread, 17 is a gas connecting port a, 18 is a negative pressure pipeline connecting column, 19 is a gas connecting port b, 20 is a first negative pressure air suction port, 21 is a second negative pressure air suction port, 22 is a hydrophobic breathable film, 23 is a cylinder, 24 is a piston, and 25 is an air inlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings, as shown in fig. 1, a packaging shell injection mold comprises an upper mold 3 and a lower mold 5, a mold cavity 4 is formed between the upper mold 3 and the lower mold 5, the upper mold 3 is connected with an upper mold plate 7, an injection port 1 is arranged on the upper mold plate 7, a runner 2 is arranged below the injection port, the runner is always connected to the mold cavity 4, the upper mold 3 is connected with the upper mold plate 7 to move up and down together, upper and lower mold positioning columns are arranged between the upper mold plate 7 and a base 9, the upper and lower mold positioning columns are used for limiting the movement of the upper mold 3, the lower mold 5 is placed on mold feet 6, the mold feet 6 are placed on the base 9, a front block 8 for molding plastic parts is arranged in the mold cavity, a connecting column 15 is arranged at the bottom of the insert 8, as shown in fig. 2, a connecting column 15 is arranged at, be provided with the recess for on the lower mould that mosaic block 8 set up the position, recess inner wall on be provided with screw thread 16, mosaic block 8 is fixed on lower mould 5 through screwing up, is provided with first negative pressure gas outlet 20 and second negative pressure gas outlet 21 inside the mosaic block, the gas outlet at the inside gas pocket that is provided with of mosaic block 8, still be provided with gas connector a17 in the bottom of spliced pole 15, gas connector a17 is connected with the inside gas pocket of spliced pole, still be provided with negative pressure pipeline spliced pole 18 below the spliced pole, be provided with gas connector b19 on negative pressure pipeline spliced pole 18 surface, gas connector a17 on the mosaic block spliced pole is connected with gas connector b19, is provided with the packing ring in gas connector b19 department for it is sealed. The negative pressure pipeline connecting column is connected with a negative pressure pipeline 13.
Further, on the basis, the surfaces of the first negative pressure air outlet 20 and the second negative pressure air outlet 21 on the surface of the mosaic block 8 are covered with a layer of hydrophobic breathable film 22, the hydrophobic breathable film is only breathable and impermeable, when a molten material is injected into the injection port, the material enters the die cavity 4 through the flow channel, when the injection of material particles is completed, the vacuum pressure is opened, the gas in the material can be sucked away, and meanwhile, the new material can be driven to enter, so that the material in the die cavity 4 is tighter, the defect of bubbles in the injected plastic part is reduced, meanwhile, the whole body is tighter, meanwhile, the polytetrafluoroethylene hydrophobic breathable film 22 covered on the surface of the mosaic block can only suck air to place the material to block the air suction port, and meanwhile, the polytetrafluoroethylene hydrophobic breathable film is also an inert material and can be prevented from being stuck on the mosaic block 8.
Further, the first ejector rod 10, the second ejector rod 11 and the third ejector rod 12 are all arranged in a cylinder 23, the bottom of the cylinder 23 is connected with an air inlet 25, the tail of the ejector rod 10 is provided with a piston 24, lubricating oil is arranged on the piston and the cylinder wall, the air inlet 25 connected with the tail is connected with a connecting air pipe 14, and air is fed into the cylinder 23 and is exhausted to control the ejection and retraction of the ejector rod 10.
The above description is for the injection mold for packing box according to the present invention, and the further detailed description is not intended to limit the scope of the present invention, and the various modifications and improvements made by those skilled in the art according to the technical solution of the present invention should be considered as the protection scope of the present invention without departing from the concept of the present invention.
Claims (5)
1. The utility model provides an injection mold for packing carton, includes the mould, cope match-plate pattern, lower mould, die cavity, base and cope and drag mould fixed column, wherein last mould connect on the cope match-plate pattern, the cope match-plate pattern on be provided with the mouth of moulding plastics, go up and form the die cavity between mould and the lower mould, cope match-plate pattern and drag mould fixed column setting on the base, the cope match-plate pattern passes cope match-plate pattern and drag mould fixed column, the cope match-plate pattern is along the activity from top to bottom of cope match-plate pattern: the injection molding device is characterized in that a runner is further connected to the injection molding port, the runner is connected with an upper mold cavity, an insert is further arranged in the mold cavity and fixedly connected with a lower mold, a negative pressure air suction port is formed in the insert, the bottom of the insert is connected with a negative pressure pipeline, the lower mold is arranged on a mold foot, the mold foot is arranged on the base, a first ejection mechanism, a second ejection mechanism and a third ejection mechanism are arranged on the lower mold, and the ejection mechanisms are ejector rods.
2. The injection mold for a packing box according to claim 1, wherein: the surface of the mosaic block is provided with two negative pressure air outlets, and the surface of the mosaic block is also provided with a layer of breathable hydrophobic membrane.
3. The injection mold for a packing box according to claim 2, wherein: the breathable hydrophobic membrane on the surface of the mosaic block is a polytetrafluoroethylene breathable hydrophobic membrane.
4. The injection mold for a packing box according to claim 1, wherein: the mosaic piece sub-unit connection has the spliced pole, the spliced pole is provided with the screw thread for the surface, the lower mould mosaic piece sets up and is provided with corresponding recess on the position, the recess internal surface is provided with the screw thread, the mosaic piece is screwed up and is fixed on the lower mould, the spliced pole bottom is provided with gas connection mouth a, gas connection mouth a connects the negative pressure pipeline spliced pole, be provided with gas connection mouth b and packing ring on the negative pressure pipeline spliced pole, negative pressure pipeline is connected to the negative pressure pipeline spliced pole.
5. The injection mold for a packing box according to claim 1, wherein: the ejector rod is arranged in the air cylinder, a piston is arranged at the tail of the ejector rod, an air inlet is arranged at the tail of the air cylinder, and the air inlet is connected with the air cylinder and connected with an air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774242.4U CN210211180U (en) | 2019-05-27 | 2019-05-27 | Injection mold for packing carton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774242.4U CN210211180U (en) | 2019-05-27 | 2019-05-27 | Injection mold for packing carton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210211180U true CN210211180U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920774242.4U Active CN210211180U (en) | 2019-05-27 | 2019-05-27 | Injection mold for packing carton |
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| Country | Link |
|---|---|
| CN (1) | CN210211180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645253A (en) * | 2020-04-14 | 2020-09-11 | 苏州博琪海电器有限公司 | Soft positioning type injection molding process for shell of dust collector |
-
2019
- 2019-05-27 CN CN201920774242.4U patent/CN210211180U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645253A (en) * | 2020-04-14 | 2020-09-11 | 苏州博琪海电器有限公司 | Soft positioning type injection molding process for shell of dust collector |
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