Anti-leakage injection molding device for plastic product production
By setting sealing rings, sealing grooves, rubber sealing rings, and compression springs on the mold cavity and core, the problem of hot melt plastic overflow during injection molding is solved, achieving the effects of preventing leakage and wear, and improving the sealing performance and convenience of the injection molding device.
Patent Information
- Application Number
- CN202520106599.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-17
AI Technical Summary
During the injection molding process, hot melt plastic can easily overflow through the mold parting line gap, resulting in rough edges on the product surface, affecting the appearance and increasing the difficulty of subsequent processing.
A sealing ring is fixed on the cavity plate surface of the mold, and a sealing ring groove is opened on the core plate surface so that the sealing ring can enter the groove and engage. Combined with the rubber sealing ring and compression spring, it ensures that the cavity and the core are tightly closed to prevent the hot melt plastic from leaking. At the same time, a buffer rubber ring and an oil storage sponge ring are set to reduce impact and lubricate the contact surface.
It effectively prevents hot melt plastic from overflowing, reduces burrs, protects the sealing ring from damage, improves the sealing performance of the injection molding process, and facilitates the replacement of rubber sealing rings.
Smart Images
Figure CN223671722U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to injection molding production technical field, especially a kind of injection molding device for plastic product production with leakage prevention. BACKGROUND
[0002] Injection molding machine as a kind of equipment for producing plastic products, with high efficiency, low cost advantage, its principle is by screw to be heated to melt state to plastic particle, then hot melt plastic is injected into mould, after hot melt plastic is cooled and shaped in mould, the cavity of mould and core open make product demoulding;When hot melt plastic is injected into mould, the cavity of mould and core butt joint gap of die is called die line, hot melt plastic usually enters die line after being injected into mould and overflow mould, so that the product surface appears larger burr, influence product appearance, bring inconvenience to subsequent product secondary processing.
[0003] Therefore, we provide a kind of injection molding device for plastic product production with leakage prevention to solve the problems in the above. INVENTION CONTENTS
[0004] The utility model aims at providing a kind of injection molding device for plastic product production with leakage prevention, by being fixed with sealing hoop on the cavity plate face of mould, sealing hoop slot is opened on the core plate face, when mould is closed, sealing hoop enters sealing hoop slot, so that the cavity of mould and core are in the state of mutual occlusion when closing, and by being connected with rubber sealing ring in the inner circle of sealing hoop, the occlusion is more closely, prevent hot melt plastic overflow, and it is convenient to replace rubber sealing ring simultaneously;By fixing a group of compression spring at the bottom of sealing hoop slot, fixedly connected with buffer rubber ring at one end of compression spring, when the cavity of mould and core are closed, prevent excessive impact to cause damage to the front end of sealing hoop, further prevent hot melt plastic from leaking in sealing hoop slot.
[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:
[0006] The utility model is a kind of injection molding device for plastic product production with leakage prevention, including panel, core base plate, cavity base plate, ejector assembly and bottom plate, core base plate is fixedly installed on the side of panel, fixedly installed with core on the side plate face of core base plate away from panel, a group of guide pillar passageways are opened on the plate face of core base plate, fixedly installed with cavity on the side plate face of cavity base plate close to core base plate, fixedly installed with guide pillar matched with guide pillar passageway on the plate face of cavity base plate, guide pillar is slidably sleeved in guide pillar passageway, fixedly installed on the side plate face of cavity base plate away from cavity of ejector assembly, fixedly installed on the end of ejector assembly away from core base plate of bottom plate, fixedly installed with annular sealing hoop on the side plate face of cavity close to core, the plate face of core close to cavity is opened with the annular sealing hoop slot concentric with sealing hoop.
[0007] The utility model further sets up, the sealing hoop is internally threaded connected with annular rubber seal ring.
[0008] The utility model further sets up, the sealing hoop annular outer ring is gradually narrowed from the one end of the self cavity to the core.
[0009] The utility model further sets up, a group of compression springs are fixedly installed in the bottom annular array of sealing hoop groove, and one buffer rubber ring is fixedly connected to the bottom one end of the compression spring group away from the sealing hoop groove.
[0010] The utility model further sets up, the annular inner wall of buffer rubber ring is gradually narrowed from the one end near the cavity to the one end near the compression spring.
[0011] The utility model further sets up, a group of oil holes are arranged on the annular side wall of buffer rubber ring in the circumferential array, and the annular oil storage sponge ring is sleeved on the annular outside of buffer rubber ring.
[0012] The utility model further sets up, the ejection assembly includes the needle face plate, two square irons and a group of needles, and the two square irons are fixedly installed on the two ends of the one side of the cavity base plate away from the cavity, the needle face plate is slidably sleeved between the two square irons, one end of the needle group is fixedly installed on the one side of the needle face plate near the cavity base plate, the needle group penetrates the cavity base plate and the cavity, and the bottom plate is fixedly installed on the one end of the square iron away from the cavity base plate.
[0013] The utility model has the advantages of the following:
[0014] 1, the utility model discloses a sealing hoop is fixed on the cavity plate surface of mould, and the sealing hoop groove is formed on the core plate surface, when the mould is closed, the sealing hoop enters the sealing hoop groove, so that the cavity and the core of the mould are in the state of mutual engagement when the mould is closed, and the rubber seal ring is connected to the inner ring of the sealing hoop by screwing, so that the engagement is more closely, prevents the overflow of hot melt plastic, and the rubber seal ring is convenient to replace.
[0015] 2, the utility model discloses a group of compression springs are fixed on the bottom of the sealing hoop groove, and the buffer rubber ring is fixedly connected to one end of the compression spring, so that the cavity and the core of the mould are prevented from being damaged by excessive impact when the mould is closed, and the hot melt plastic is prevented from leaking from the sealing hoop groove.
[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments, obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 It is a structure schematic view of the injection molding device capable of preventing leakage for producing plastic products.
[0019] Figure 2 It is another structure schematic view of the present application.
[0020] Figure 3 It is an exploded view of the structure of the present application.
[0021] Figure 4 It is a side sectional view of the core and the cavity.
[0022] Figure 5 It is a top view of the present application.
[0023] In the drawings, the component list represented by each number is as follows:
[0024] 1 - panel, 2 - core base plate, 201 - core, 201a - sealing hoop groove, 201a-1 - compression spring, 201a-2 - buffer rubber ring, 201a-3 - oil hole, 201a-4 - oil storage sponge ring, 202 - guide column channel, 3 - cavity base plate, 301 - cavity, 301a - sealing hoop, 301a-1 - rubber sealing ring, 302 - guide column, 4 - ejection assembly, 401 - ejector pin panel, 402 - square iron, 403 - ejector pin, 5 - bottom plate. DETAILED DESCRIPTION
[0025] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0026] Embodiment 1
[0027] Please refer to Figures 1 to 5The utility model discloses a plastic product production can prevent the injection molding device of leakage, including panel 1, core base plate 2, cavity base plate 3, ejection assembly 4 and bottom plate 5, through the fixed sealing hoop 301a on the cavity 301 board surface of mould, open sealing hoop groove 201a on the board surface of core 201, when the mould is closed, sealing hoop 301a enters sealing hoop groove 201a, makes the cavity 301 of mould and core 201 be in the state of mutual occlusion when closing, and through the rubber sealing ring 301a-1 of sealing hoop 301a inner ring thread connection, make occlusion more closely, prevent hot melt plastic overflow, convenient for replacing rubber sealing ring 301a-1 simultaneously, through the fixed compression spring 201a-1 of a group at the bottom of sealing hoop groove 201a, the fixed connection buffer rubber ring 201a-2 at one end of compression spring 201a-1, when the cavity 301 of mould and core 201 are closed, prevent excessive impact to cause damage to the front end of sealing hoop 301a, further prevent hot melt plastic from leaking from sealing hoop groove 201a.
[0028] Specifically, the core base plate 2 is fixedly installed on one side of the panel 1, the core base plate 2 is fixedly installed with the core 201 on the side surface away from the panel 1, a plurality of guide column channels 202 are formed in the surface of the core base plate 2, the cavity base plate 3 is fixedly installed with the cavity 301 on the side surface close to the core base plate 2, a plurality of guide columns 302 matched with the guide column channels 202 are fixedly arranged on the surface of the cavity base plate 3, the guide columns 302 are slidably sleeved in the guide column channels 202, the ejection assembly 4 is fixedly installed on the surface of the cavity base plate 3 away from the cavity 301, and the bottom plate 5 is fixedly installed on one end of the ejection assembly 4 away from the cavity base plate 3, characterized in that: the annular sealing hoop 301a is fixedly arranged on the surface of the cavity 301 close to the core 201, and the annular sealing hoop groove 201a concentric with the sealing hoop 301a is formed in the surface of the core 201 close to the cavity 301.
[0029] Further, the annular rubber sealing ring 301a-1 is threadedly connected in the sealing hoop 301a, so that the sealing and leakage prevention effect is improved, and the buffering and anti-wear effects are achieved.
[0030] Further, the annular outer ring of the sealing hoop 301a is gradually narrowed from the cavity 301 to the end close to the core 201, so as to be conveniently arranged in the sealing hoop groove 201a.
[0031] Further, the annular array of the sealing hoop groove 201a is fixedly installed with a plurality of compression springs 201a-1 at the bottom, one buffer rubber ring 201a-2 is fixedly connected to one end of the plurality of compression springs 201a-1 away from the bottom of the sealing hoop groove 201a, so that the sealing hoop 301a is arranged in the buffer rubber ring 201a-2 and covered by the buffer rubber ring 201a-2.
[0032] Further, the annular inner wall of the buffer rubber ring 201a-2 is gradually narrowed from the end close to the cavity 301 to the end close to the compression spring 201a-1, so as to facilitate the entry of the sealing hoop 301a and the fitting with the outer ring of the sealing hoop 301a, and the inclined surface contact extrusion further improves the sealing performance.
[0033] Further, a group of oil holes 201a-3 are arranged on the annular side wall of the buffer rubber ring 201a-2 in a circumferential array, and an annular oil storage sponge ring 201a-4 is sleeved on the outer side of the buffer rubber ring 201a-2, which is used to lubricate the abutting position of the buffer rubber ring 201a-2 and the sealing hoop 301a.
[0034] The operation process of the embodiment is as follows:
[0035] When the cavity 301 of the mold is closed with the core 201, the sealing hoop 301a-1 is embedded in the rubber sealing ring 301a-1 of the sealing hoop groove 201a-1, so that the closed position of the cavity 301 and the core 201 is mutually engaged. After the sealing hoop 301a enters the sealing hoop groove 201a, the sealing hoop 301a extrudes the buffer rubber ring 201a-2 to compress the compression spring 201a-1, which is used to absorb the impact of the cavity reset and improve the sealing effect. At the same time of extrusion, the lubricating oil in the oil storage sponge ring 201a-4 enters the abutting position of the buffer rubber ring 201a-2 and the sealing hoop 201a through the oil hole 201a-3, which plays a lubricating effect on the abutting position. When the rubber sealing ring 301a-1 needs to be replaced, the rubber sealing ring 301a-1 in the sealing hoop 301a is unscrewed, and then a new rubber sealing ring 301a-1 is screwed.
[0036] Embodiment 2
[0037] Please refer to Figures 1 to 5 On the basis of embodiment 1, the ejection assembly 4 includes a needle panel 401, two square irons 402 and a group of ejector pins 403. After the hot melt plastic in the mold is cooled and shaped, the cavity 301 of the mold moves backward, the needle panel 401 is reset, and the ejector pins 403 eject the plastic product in the cavity 301, thereby completing the demolding of the product.
[0038] Specifically, the ejection assembly 4 includes a needle panel 401, two square irons 402 and a group of ejector pins 403. The two square irons 402 are fixedly installed on the two ends of the cavity base plate 3 away from the cavity 301. The needle panel 401 is slidably sleeved between the two square irons 402. One end of the group of ejector pins 403 is fixedly installed on the side panel of the needle panel 401 close to the cavity base plate 3. The group of ejector pins 403 penetrates the cavity base plate 3 and the cavity 301. The bottom plate 5 is fixedly installed at the end of the square iron 402 away from the cavity base plate 3.
[0039] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.
Claims
1. A plastic product production leak-proof injection molding device, comprising a panel (1), a core base plate (2), a cavity base plate (3), an ejection assembly (4) and a bottom plate (5), the core base plate (2) is fixedly installed on one side of the panel (1), a core (201) is fixedly installed on the side plate surface of the core base plate (2) away from the panel (1), a group of guide pillar channels (202) are formed on the plate surface of the core base plate (2), a cavity (301) is fixedly installed on the plate surface of the cavity base plate (3) close to the core base plate (2), guide pillars (302) matched with the guide pillar channels (202) are fixedly arranged on the plate surface of the cavity base plate (3), the guide pillars (302) are slidingly sleeved in the guide pillar channels (202), the ejection assembly (4) is fixedly installed on the plate surface of the cavity base plate (3) away from the cavity (301), and the bottom plate (5) is fixedly installed on one end of the ejection assembly (4) away from the cavity base plate (3), characterized in that: The cavity (301) is fixed with an annular sealing hoop (301a) on the side plate surface close to the core (201), and the core (201) is provided with an annular sealing hoop groove (201a) concentric with the sealing hoop (301a) on the side plate surface close to the cavity (301). 2. The leakage-proof injection molding device for plastic product production according to claim 1, characterized in that: The sealing hoop (301a) is threadedly connected with an annular rubber sealing ring (301a-1).
3. The leakage-proof injection molding device for plastic product production according to claim 2, characterized in that: The annular outer ring of the sealing hoop (301a) is gradually narrowed from the cavity (301) to the end close to the core (201).
4. The leakage-proof injection molding device for plastic product production according to claim 3, characterized in that: A group of compression springs (201a-1) are fixedly installed on the bottom of the sealing hoop groove (201a) in an annular array, and a buffer rubber ring (201a-2) is fixedly connected to the end of the group of compression springs (201a-1) away from the bottom of the sealing hoop groove (201a).
5. The leakage-proof injection molding device for plastic product production according to claim 4, characterized in that: The annular inner wall of the buffer rubber ring (201a-2) is gradually narrowed from the end close to the cavity (301) to the end close to the compression spring (201a-1).
6. The leakage-proof injection molding device for plastic product production according to claim 5, characterized in that: A group of oil holes (201a-3) are arranged in a circumferential array on the annular side wall of the buffer rubber ring (201a-2), and an annular oil storage sponge ring (201a-4) is sleeved on the outer side of the buffer rubber ring (201a-2).
7. The leakage-proof injection molding device for plastic product production according to claim 1, characterized in that: The ejection assembly (4) comprises a ejector pin panel (401), two square irons (402) and a group of ejector pins (403), the two square irons (402) are fixedly installed on the two ends of the cavity base plate (3) away from the cavity (301), the ejector pin panel (401) is slidably sleeved between the two square irons (402), one end of the group of ejector pins (403) is fixedly installed on the side plate surface of the ejector pin panel (401) close to the cavity base plate (3), the group of ejector pins (403) penetrates the cavity base plate (3) and the cavity (301), and the bottom plate (5) is fixedly installed on the end of the square iron (402) away from the cavity base plate (3).