CN214448250U - Mold opening mechanism of injection molding machine - Google Patents
Mold opening mechanism of injection molding machine Download PDFInfo
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- CN214448250U CN214448250U CN202120504643.5U CN202120504643U CN214448250U CN 214448250 U CN214448250 U CN 214448250U CN 202120504643 U CN202120504643 U CN 202120504643U CN 214448250 U CN214448250 U CN 214448250U
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- injection molding
- molding machine
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- injection
- platen
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 239000012768 molten material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model relates to a mold opening mechanism of an injection molding machine, which comprises a front shooting platen and a back shooting platen; the back-shooting bedplate is connected with a linear driving mechanism; the front injection platen is connected with the feeding mechanism, and a fixing plate is arranged on the inner side of the rear injection platen; a female die is arranged on the fixing plate; a side surrounding cavity is arranged on the outer side of the female die; a female die is arranged at the position of the front injection platen relative to the male die; the side surrounding cavity is connected with the back-shooting bedplate; the upper side and the lower side of the fixed plate are connected with the upper side and the lower side of the rack of the injection molding machine through fixed columns. When the mold is opened, the rear injection platen drives the side wall cavity to translate, and after the side wall cavity is separated from the female mold, the edge of the injection molding workpiece can be exposed out of the edge of the female mold, so that the demolding procedure is facilitated, and the injection molding process is suitable for the limited use of the ejection mechanism.
Description
Technical Field
The utility model relates to an injection molding machine, concretely relates to injection molding machine die sinking mechanism belongs to injection moulding equipment technical field.
Background
The injection moulding machine is similar to the injection syringe for injection, and is a technological process in which the plasticized plastic in a molten state (i.e. viscous state) is injected into a closed mould cavity by means of the thrust of a screw (or a plunger), and the product is obtained after solidification and shaping. Injection molding is a cyclic process, each cycle consisting essentially of: quantitative feeding, melting and plasticizing, pressure injection, mold filling and cooling, mold opening and part taking. And taking out the plastic part, closing the mold again, and performing the next cycle. And (3) operation items of the injection molding machine: the operation items of the injection molding machine comprise three aspects of control keyboard operation, electric appliance control system operation and hydraulic system operation. The selection of injection process action, feeding action, injection pressure, injection speed and ejection type, the monitoring of the temperature of each section of the charging barrel, the regulation of injection pressure and back pressure and the like are respectively carried out. The forming process of a common screw injection molding machine comprises the following steps: granular or powdery plastic is firstly added into a machine barrel, the plastic is made into a molten state through the rotation of a screw and the heating of the outer wall of the machine barrel, then the machine carries out die assembly and the forward movement of an injection seat, a nozzle is made to be attached to a sprue channel of a die, then pressure oil is introduced into an injection cylinder, the screw is made to advance, so that molten materials are injected into a closed die with lower temperature at a higher pressure and a higher speed, and the closed die is kept under a certain time and pressure (also called pressure maintaining) and cooled to be solidified and molded, so that a product can be taken out after die opening (the pressure maintaining aims at preventing the molten materials in a die cavity from flowing backwards, supplementing the materials into the die cavity and ensuring that the product has certain density and dimensional tolerance). The basic requirements of injection molding are plasticization, injection and molding. Plasticization is a prerequisite for achieving and ensuring the quality of the molded product, and in order to meet the molding requirements, sufficient pressure and speed must be ensured for injection. Meanwhile, because the injection pressure is high, correspondingly high pressure is generated in the die cavity (the average pressure in the die cavity is generally between 20 and 45 MPa), and therefore, a sufficient mold clamping force is required. It follows that the injection device and the mold opening device are key components of the injection molding machine. In the prior art, in the mold opening process, if a product is not completely cooled, the product is very easy to be bonded with a cavity, so that the workpiece is difficult to demould, and under the condition that an injection material is not completely cooled and solidified, an ejection mechanism is directly adopted for demoulding, so that the product is easy to deform, and the phenomenon of uneven surface is easily formed. Meanwhile, in the existing cavity, as the injected material and the cavity do not have any gap, the demoulding is difficult under the condition that an ejection mechanism cannot be adopted. Therefore, further improvements are desired.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an overcome the defect among the prior art, provide an injection molding machine die sinking mechanism, the drawing of patterns process is convenient, not fragile work piece reduces the defective percentage, and concrete scheme is as follows:
a mold opening mechanism of an injection molding machine comprises a front injection platen and a rear injection platen; the back-shooting bedplate is connected with a linear driving mechanism; the front injection platen is connected with the feeding mechanism, and a fixing plate is arranged on the inner side of the rear injection platen; a female die is arranged on the fixing plate; a side surrounding cavity is arranged on the outer side of the male die; a female die is arranged at the position of the front injection platen relative to the male die; the side surrounding cavity is connected with the back-shooting bedplate; the upper side and the lower side of the fixed plate are connected with the upper side and the lower side of the rack of the injection molding machine through fixed columns.
Preferably, the upper side and the lower side of the back-shooting bedplate are respectively provided with a sliding groove; the sliding groove is arranged opposite to the fixed column; the fixed plate is positioned at the center of the back-shooting bedplate.
Preferably, the fixing column is embedded in the sliding groove; the injection platen and the side wall cavity move relative to the female die and the fixing plate; the female die is connected with the fixing plate through the flange seat.
Preferably, a sliding seat is arranged on the outer side of the back shooting table plate; the linear driving mechanism comprises a screw rod; one end of the screw rod is connected with the rotating seat, and the driving wheel is arranged at the end.
Preferably, a threaded sleeve matched with the screw rod is arranged in the sliding seat; the driving wheel is connected with a driving motor through a transmission belt.
Preferably, the side wall cavity comprises a cavity seat which is matched with the concave die set forming cavity; and a fixed seat connected with the fixed plate is arranged at the bottom of the cavity seat.
Preferably, one side of the fixed seat is provided with a sealing convex edge; the sealing convex edge covers the joint of the cavity seat and the concave die.
In the utility model, the fixing plate is arranged in the back-shooting bedplate, and the concave die is arranged on the fixing plate; when the die is closed, a side surrounding cavity on the rear injection platen and a female die on the fixed plate jointly form a lower die, and the lower die and an upper die on the front injection platen jointly complete die closing; when the mold is opened, the rear injection platen drives the side wall cavity to translate, and after the side wall cavity is separated from the female mold, the edge of the injection molding workpiece can be exposed out of the edge of the female mold, so that the demolding procedure is facilitated, and the injection molding process is suitable for the limited use of the ejection mechanism.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic cross-sectional view of the back-emitting platen and the fixing plate in a stationary state.
Fig. 3 is a schematic cross-sectional view of the back-emitting platen and the fixing plate in a relative motion state.
FIG. 4 is a cross-sectional view of another orientation of the back-emitting platen and the mounting plate.
Fig. 5 is a cross-sectional view of the rear platen and the fixing plate in another separated state.
In the figure, 1 is a front injection bedplate, 2 is a rear injection bedplate, 2.1 is a sliding groove, 3 is a fixing plate, 4 is a female die, 5 is a side wall cavity, 6 is a male die, 7 is a fixing column, 8 is a sliding seat, 9 is a screw rod, 10 is a rotating seat, 11 is a driving wheel, 12 is a cavity seat, 13 is a fixing seat, and 13.1 is a sealing convex edge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.
Referring to fig. 1-5, a mold opening mechanism of an injection molding machine comprises a front injection platen 1 and a rear injection platen 2; the back-shooting bedplate 2 is connected with a linear driving mechanism; the front injection platen 1 is connected with a feeding mechanism, and a fixing plate 3 is arranged on the inner side of the rear injection platen 2; a female die 4 is arranged on the fixing plate 3; a side surrounding cavity 5 is arranged outside the female die 4; a convex die 6 is arranged at the position of the front injection platen 1 relative to the concave die; the side wall cavity 5 is connected with the back-shooting bedplate 2; the upper side and the lower side of the fixed plate 3 are connected with the upper side and the lower side of the machine frame of the injection molding machine through fixed columns 7.
Furthermore, the upper side and the lower side of the back shooting bedplate 2 are respectively provided with a sliding groove 2.1; the sliding groove 2.1 is arranged opposite to the fixed column 7; the fixed plate 3 is positioned at the center of the back shooting bedplate 2.
Specifically, in this embodiment, the fixed plate is used for bearing the die, and what the fixed plate was connected in the injection molding machine through the fixed column of upper and lower both sides, when penetrating the platen after with the fixed plate separation, owing to set up by sliding tray 2.1 in penetrating the platen after for penetrate the platen after can be relative fixed plate motion, also can ensure the two parallel and level.
Furthermore, the fixed column 7 is embedded in the sliding groove 2.1; the back-shooting platen 2 and the side wall cavity 5 move relative to the female die 4 and the fixing plate 3; the female die 4 is connected with the fixing plate 3 through a flange seat.
Furthermore, a sliding seat 8 is arranged on the outer side of the back-shooting bedplate 2; the linear driving mechanism comprises a screw rod 9; one end of the screw rod 9 is connected with the rotating seat 10, and the end is provided with a driving wheel 11.
Furthermore, a threaded sleeve matched with the screw rod 9 is arranged in the sliding seat 8; the driving wheel 11 is connected with a driving motor through a transmission belt.
Furthermore, the side wall cavity 5 comprises a cavity seat 12 forming a cavity with the female die 4; and a fixed seat 13 connected with the fixed plate 3 is arranged at the bottom of the cavity seat 12.
Furthermore, one side of the fixed seat 13 is provided with a sealing convex edge 13.1; the sealing convex edge 13.1 covers the joint of the cavity seat and the concave die.
Specifically, in order to avoid the phenomenon that the injection material cannot leak between the cavity seat and the female die, a sealing convex edge 13.1 is arranged at the joint of the cavity seat and the female die.
The working principle is as follows: when the die is closed, the side wall cavity is parallel and level to the female die under the driving of the back injection platen, and a lower die assembly is formed together; when the die is opened, the female die keeps the original position unchanged under the action of the fixing plate, the side wall cavity moves towards the rear side under the driving of the back-shooting platen, and finally the side wall cavity is separated from the female die.
Finally, it is noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (7)
1. A mold opening mechanism of an injection molding machine comprises a front injection platen and a rear injection platen; the back-shooting bedplate is connected with a linear driving mechanism; the front-emitting bedplate is connected with the feeding mechanism and is characterized in that: a fixed plate is arranged on the inner side of the back-emitting bedplate; a female die is arranged on the fixing plate; a side surrounding cavity is arranged on the outer side of the female die; a female die is arranged at the position of the front injection platen relative to the male die; the side surrounding cavity is connected with the back-shooting bedplate; the upper side and the lower side of the fixed plate are connected with the upper side and the lower side of the rack of the injection molding machine through fixed columns.
2. The mold opening mechanism of the injection molding machine according to claim 1, characterized in that: the upper side and the lower side of the back-shooting bedplate are respectively provided with a sliding groove; the sliding groove is arranged opposite to the fixed column; the fixed plate is positioned at the center of the back-shooting bedplate.
3. The mold opening mechanism of the injection molding machine according to claim 2, characterized in that: the fixed column is embedded in the sliding groove; the injection platen and the side wall cavity move relative to the female die and the fixing plate; the female die is connected with the fixing plate through the flange seat.
4. The mold opening mechanism of an injection molding machine according to claim 3, characterized in that: a sliding seat is arranged on the outer side of the back-shooting table plate; the linear driving mechanism comprises a screw rod; one end of the screw rod is connected with the rotating seat, and the driving wheel is arranged at the end.
5. The mold opening mechanism of the injection molding machine according to claim 4, wherein: a threaded sleeve matched with the screw rod is arranged in the sliding seat; the driving wheel is connected with a driving motor through a transmission belt.
6. The mold opening mechanism of the injection molding machine according to claim 1, characterized in that: the side wall cavity comprises a cavity seat which is matched with the concave die set forming cavity; and a fixed seat connected with the fixed plate is arranged at the bottom of the cavity seat.
7. The mold opening mechanism of the injection molding machine according to claim 6, wherein: one side of the fixed seat is provided with a sealing convex edge; the sealing convex edge covers the joint of the cavity seat and the concave die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120504643.5U CN214448250U (en) | 2021-03-10 | 2021-03-10 | Mold opening mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120504643.5U CN214448250U (en) | 2021-03-10 | 2021-03-10 | Mold opening mechanism of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214448250U true CN214448250U (en) | 2021-10-22 |
Family
ID=78154237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120504643.5U Active CN214448250U (en) | 2021-03-10 | 2021-03-10 | Mold opening mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214448250U (en) |
-
2021
- 2021-03-10 CN CN202120504643.5U patent/CN214448250U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240402 Address after: Room 202, Building 1, No. 6 Sifangyuan 1st Road, Humen Town, Dongguan City, Guangdong Province, 523000 Patentee after: Dongguan Fengcheng Plastic Mold Co.,Ltd. Country or region after: China Address before: 523000 Room 502, 5th floor, No. 9, Fenghuang 2nd Road, Ludong community, Humen Town, Dongguan City, Guangdong Province Patentee before: Dongguan Jingying Electronic Technology Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |