CN112827751A - Pure-mechanism sealed glue injection device and method - Google Patents
Pure-mechanism sealed glue injection device and method Download PDFInfo
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- CN112827751A CN112827751A CN202011638510.3A CN202011638510A CN112827751A CN 112827751 A CN112827751 A CN 112827751A CN 202011638510 A CN202011638510 A CN 202011638510A CN 112827751 A CN112827751 A CN 112827751A
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- thimble
- gun body
- valve needle
- glue injection
- sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a pure-mechanism sealed glue injection device and a pure-mechanism sealed glue injection method. The device comprises a cylinder, a gun body, a thimble, a valve needle sleeve, a sealing sleeve, a valve needle seat, a nut, a connector, a guide pillar, a guard plate and a heat insulation plate; the air cylinder is connected with a heat insulation plate, the heat insulation plate is connected with a protection plate, the protection plate is connected with the bottom of the gun body through two guide pillars, and the bottom of the gun body is fixed with the top of the gun body through a screw; the thimble is arranged in the cavity of the gun body, the valve needle sleeve is fixed between the bottom of the gun body and the top of the gun body, the sealing ring and the nut are matched and fixed with the thimble through threads, and the connector is connected to the top of the thimble through a taper pin; the piston rod of the cylinder is connected with the valve needle seat, and the connector is fixed in the valve needle seat and is connected with the bottom of the thimble through the connector. The method comprises the following steps: when the air cylinder extends out, the piston rod of the air cylinder drives the thimble to push forwards, the gun nozzle is closed, and glue injection is stopped; when the cylinder retracts, the gun nozzle is opened, and glue injection is started. The invention has the advantages of simple structure, small volume and convenient disassembly and assembly.
Description
Technical Field
The invention belongs to the technical field of plastic production equipment, and particularly relates to a pure-mechanism sealed glue injection device and method.
Background
With the rapid development of economy and industry in China, the plastic processing industry is also rapidly developed and plays a vital role in an industrial chain. Injection molding is an important branch of the plastic processing industry at present, and the processing method is rapidly developed in recent years and widely applied to various fields such as mechanical parts, national defense industry, transportation, instrument and meter industry, electronics and electrical industry, aviation, daily life and the like.
In the injection molding process, a glue injection device is mostly used, and the thermoplastic elastomer is heated independently and is injected into the mold through the glue injection device. At present, the injection molding processing industry mainly adopts a glue injection gun adopting a pneumatic or hydraulic top cylinder extrusion mode.
The existing glue injection gun has a complex structure and cannot well resist high temperature, so that the glue injection gun is easy to deform slightly and cannot well seal, and the quality of glue injection products is influenced; and present injecting glue rifle is mostly imported brand, adopts the scheme of the pneumatic cylinder body injecting glue machine of import, and equipment cost is higher, the maintenance degree of difficulty is big and the maintenance cost is high, can not satisfy the demand of part enterprise of moulding plastics.
Disclosure of Invention
The invention aims to provide a pure-mechanism sealed glue injection device and method which are low in price, simple in structure, convenient to control and resistant to high temperature.
The technical solution for realizing the purpose of the invention is as follows: a pure-mechanism sealed glue injection device comprises a cylinder, a gun body, a thimble, a valve needle sleeve, a sealing sleeve, a valve needle base, a nut, a connector, a guide pillar, a guard plate and a heat insulation plate;
the cylinder is connected with the heat insulation plate, and the heat insulation plate is connected with the guard plate; the protective plate is connected with the bottom of the gun body through two guide posts, and the bottom of the gun body is fixed with the top of the gun body through screws; the thimble is arranged in the cavity of the gun body, and the valve needle sleeve is fixed between the bottom of the gun body and the top of the gun body; the sealing sleeve and the nut are matched and fixed with the thimble through threads, and the connector is connected to the bottom of the thimble through a taper pin; the piston rod of the cylinder is connected with the valve needle seat, the interior of the valve needle seat is connected with the connector, and the valve needle seat is connected with the bottom of the ejector pin through the connector.
As a specific example, the air cylinder, the gun body, the thimble, the valve needle sleeve, the sealing sleeve, the valve needle seat, the nut, the connector, the guide pillar, the guard plate and the heat insulation plate are all detachable structures.
As a specific example, the gun body is provided with two mounting holes for mounting the bottom of the gun body and the top of the gun body integrally; the body of a gun sets up the sizing material pan feeding mouth, and the sizing material pan feeding mouth is connected with the inside cavity of body of a gun, and the cavity of body of a gun adopts the hollow structure with thimble concentric, forms inside sizing material flow channel.
As a specific example, the thimble comprises three parts, namely a threaded section, a small-diameter cylindrical section and a large-diameter cylindrical section, wherein the small-diameter cylindrical section and the large-diameter cylindrical section are connected through a taper angle.
As a specific example, the diameter of the central hole of the valve needle sleeve is equal to the diameter of the small-diameter cylindrical section of the thimble; the upper end of the valve needle sleeve is provided with a convex cone angle which forms cone angle matching seal with the cone angle of the sealing sleeve; the lower end of the valve needle sleeve is provided with a concave cone angle which forms cone angle matching sealing with the cone angle of the thimble.
As a specific example, the device comprises three sealing points, wherein:
sealing point 1: the sealing sleeve and the valve needle sleeve are matched and sealed through a taper angle; sealing point 2: the valve needle sleeve and the thimble are sealed in a matching way through a taper angle; sealing point 3: the thimble and the gun nozzle are matched and sealed through a cone angle.
A pure mechanism sealed glue injection method comprises the following steps:
step 1, when the air cylinder extends out, a piston rod of the air cylinder drives the thimble to push forwards, a sealing point 1 and a sealing point 3 are sealed, a gun nozzle is closed, and glue injection is stopped;
and 2, when the air cylinder retracts, the piston rod of the air cylinder drives the thimble to move backwards, the sealing point 2 is sealed, the gun nozzle is opened, and glue injection is started.
Compared with the prior art, the invention has the following remarkable advantages: (1) the sealing is realized by adopting a pure mechanism, so that the high temperature resistance and the sealing property are improved; (2) the structure is simple, the volume is small, and the control is convenient; (3) the glue injection process is completed in a pneumatic mode, and the glue injection device is energy-saving and environment-friendly.
Drawings
Fig. 1 is a schematic structural diagram of a pure-mechanism sealed glue injection device according to the present invention.
Fig. 2 is a schematic structural view of a closed state of the glue nozzle in the embodiment of the invention.
Fig. 3 is a schematic structural view of an open state of the glue nozzle in the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a sealing point in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
With reference to fig. 1 to 4, the invention relates to a pure-mechanism sealed glue injection device, which comprises a cylinder 1, a gun body 2, a thimble 3, a valve needle sleeve 4, a sealing sleeve 5, a valve needle seat 6, a nut 7, a connector 8, a guide pillar 9, a guard plate 10 and a heat insulation plate 11;
the cylinder 1 is connected with a heat insulation plate 11, and the heat insulation plate 11 is connected with a guard plate 10; the protective plate 10 is connected with the bottom of the gun body 2 through two guide posts 9, and the bottom of the gun body 2 is fixed with the top of the gun body 2 through screws; the thimble 3 is arranged in the cavity of the gun body 2, and the valve needle sleeve 6 is fixed between the bottom of the gun body 2 and the top of the gun body 2; the sealing ring 5 and the nut 7 are fixed with the thimble 3 through thread fit, and the connector 8 is connected to the bottom of the thimble 3 through a taper pin; the piston rod of cylinder 1 is connected with needle seat 6, and needle seat 6 is inside to link to each other with connector 8, is connected with 3 bottoms of thimble through connector 8.
As a specific example, the cylinder 1, the gun body 2, the thimble 3, the valve needle sleeve 4, the sealing sleeve 5, the valve needle seat 6, the nut 7, the connector 8, the guide pillar 9, the guard plate 10 and the heat insulation plate 11 are all detachable structures.
As a specific example, the gun body 2 is provided with two mounting holes 12 for mounting the bottom of the gun body 2 integrally with the top of the gun body 2; the gun body 2 is provided with a sizing material feeding port, the sizing material feeding port is connected with a cavity inside the gun body 2, and the cavity of the gun body 2 adopts a hollow structure concentric with the thimble 3 to form an internal sizing material flow channel.
As a specific example, the thimble 3 comprises three parts, namely a threaded section, a small-diameter cylindrical section and a large-diameter cylindrical section, wherein the small-diameter cylindrical section and the large-diameter cylindrical section are connected through a taper angle.
As a specific example, the diameter of the central hole of the valve needle sleeve 4 is equal to the diameter of the small-diameter cylindrical section of the thimble 3; the upper end of the valve needle sleeve 4 is provided with a convex cone angle which forms a cone angle matching seal with the cone angle of the sealing sleeve 5; the lower end of the valve needle sleeve 4 is provided with a concave cone angle which forms a cone angle matching seal with the cone angle of the thimble 3.
As a specific example, the pure-mechanism sealed glue injection device comprises three sealing points, wherein:
sealing point 1: the sealing sleeve 5 and the valve needle sleeve 4 are matched and sealed through a taper angle; sealing point 2: the valve needle sleeve 4 and the thimble 3 are matched and sealed through a taper angle; sealing point 3: the thimble 3 and the gun nozzle are matched and sealed through a taper angle.
A pure mechanism sealed glue injection method comprises the following steps:
step 1, when the air cylinder 1 extends out, a piston rod of the air cylinder drives the thimble 3 to push forwards, the sealing point 1 and the sealing point 3 are sealed, a gun nozzle is closed, and glue injection is stopped;
and 2, when the air cylinder 1 retracts, the air cylinder piston rod drives the ejector pin 3 to move backwards, the sealing point 2 is sealed, the gun nozzle is opened, and glue injection is started.
Example 1
Referring to fig. 1, the pure-mechanism sealed glue injection device in the embodiment includes a cylinder 1, a gun body 2, an ejector pin 3, a valve needle sleeve 4, a sealing sleeve 5, a valve needle seat 6, a nut 7, a connector 8, a guide pillar 9, a guard plate 10, and a heat insulation plate 11;
the cylinder 1 is connected with a heat insulation plate 11, and the heat insulation plate 11 is connected with a guard plate 10; the protective plate 10 is connected with the bottom of the gun body 2 through two guide posts 9, and the bottom of the gun body 2 is fixed with the top of the gun body 2 through screws; the thimble 3 is arranged in the cavity of the gun body 2, and the valve needle sleeve 6 is fixed between the bottom of the gun body 2 and the top of the gun body 2; the sealing ring 5 and the nut 7 are fixed with the thimble 3 through thread fit, and the connector 8 is connected to the bottom of the thimble 3 through a taper pin; the piston rod of cylinder 1 is connected with needle seat 6, and needle seat 6 is inside to link to each other with connector 8, is connected with 3 bottoms of thimble through connector 8.
As a specific example, the cylinder 1, the gun body 2, the thimble 3, the valve needle sleeve 4, the sealing sleeve 5, the valve needle seat 6, the nut 7, the connector 8, the guide pillar 9, the guard plate 10 and the heat insulation plate 11 are all detachable structures.
As a specific example, the gun body 2 is provided with two mounting holes 12 for mounting the bottom of the gun body 2 integrally with the top of the gun body 2; the gun body 2 is provided with a sizing material feeding port, the sizing material feeding port is connected with a cavity inside the gun body 2, and the cavity of the gun body 2 adopts a hollow structure concentric with the thimble 3 to form an internal sizing material flow channel.
As a specific example, the thimble 3 comprises three parts, namely a threaded section, a small-diameter cylindrical section and a large-diameter cylindrical section, wherein the small-diameter cylindrical section and the large-diameter cylindrical section are connected through a taper angle.
As a specific example, referring to fig. 2, 3 and 4, the diameter of the central hole of the valve needle sleeve 4 is equal to the diameter of the small-diameter cylindrical section of the thimble 3; the upper end of the valve needle sleeve 4 is provided with a convex cone angle which forms a cone angle matching seal with the cone angle of the sealing sleeve 5; the lower end of the valve needle sleeve 4 is provided with a concave cone angle which forms a cone angle matching seal with the cone angle of the thimble 3.
As a specific example, the pure-mechanism sealed glue injection device comprises three sealing points, wherein:
sealing point 1: the sealing sleeve 5 and the valve needle sleeve 4 are matched and sealed through a taper angle; sealing point 2: the valve needle sleeve 4 and the thimble 3 are matched and sealed through a taper angle; sealing point 3: the thimble 3 and the gun nozzle are matched and sealed through a taper angle.
With reference to fig. 2 and 3, a pure mechanism sealed glue injection method includes the following steps:
step 1, when the air cylinder 1 extends out, a piston rod of the air cylinder drives the thimble 3 to push forwards, the sealing point 1 and the sealing point 3 are sealed, a gun nozzle is closed, and glue injection is stopped;
and 2, when the air cylinder 1 retracts, the air cylinder piston rod drives the ejector pin 3 to move backwards, the sealing point 2 is sealed, the gun nozzle is opened, and glue injection is started.
In conclusion, the pure-mechanism sealed glue injection device and the pure-mechanism sealed glue injection method have the advantages that the pure-mechanism sealing is adopted, high temperature resistance can be better achieved, sealing can be better completed, deformation of the device is small under the high-temperature condition, glue injection uniformity in each time is guaranteed, and the quality of glue injection products is guaranteed; the device has simple structure, small volume and convenient control, and can reduce the enterprise cost; the pneumatic power source is a safe power source, energy is saved, the environment is protected, and the sustainable development strategy is met.
Claims (7)
1. A pure mechanism sealed glue injection device is characterized by comprising a cylinder (1), a gun body (2), a thimble (3), a valve needle sleeve (4), a sealing sleeve (5), a valve needle seat (6), a clamping nut (7), a connector (8), a guide pillar (9), a guard plate (10) and a heat insulation plate (11);
the cylinder (1) is connected with a heat insulation plate (11), and the heat insulation plate (11) is connected with the guard plate (10); the protective plate (10) is connected with the bottom of the gun body (2) through two guide posts (9), and the bottom of the gun body (2) is fixed with the top of the gun body (2) through screws; the thimble (3) is arranged in the cavity of the gun body (2), and the valve needle sleeve (4) is fixed between the bottom of the gun body (2) and the top of the gun body (2); the sealing sleeve (5) and the nut (7) are fixed with the thimble (3) in a threaded fit manner, and the connector (8) is connected to the bottom of the thimble (3) through a taper pin; the piston rod of the cylinder (1) is connected with the valve needle seat (6), the interior of the valve needle seat (6) is connected with the connector (8), and the valve needle seat is connected with the bottom of the ejector pin (3) through the connector (8).
2. The glue injection device with a pure mechanism sealed type according to claim 1, characterized in that the cylinder (1), the gun body (2), the thimble (3), the valve needle sleeve (4), the sealing sleeve (5), the valve needle seat (6), the nut (7), the connector (8), the guide post (9), the guard plate (10) and the heat insulation plate (11) are all detachable structures.
3. Mechanism-only sealed glue injection device according to claim 1, characterised in that said gun body (2) is provided with two mounting holes (12) for mounting the bottom of the gun body (2) integral with the top of the gun body (2); the gun body (2) is provided with a sizing material inlet, the sizing material inlet is connected with a cavity inside the gun body (2), and the cavity of the gun body (2) adopts a hollow structure concentric with the thimble (3) to form an internal sizing material flow channel.
4. The glue injection apparatus of claim 1, wherein the pin (3) comprises a threaded section, a small diameter cylindrical section and a large diameter cylindrical section, and wherein the small diameter cylindrical section and the large diameter cylindrical section are connected by a taper angle.
5. The pure-mechanism sealed glue injection device according to claim 1, characterized in that the diameter of the central hole of the valve needle sleeve (4) is equal to the diameter of the small-diameter cylindrical section of the thimble (3); the upper end of the valve needle sleeve (4) is provided with a convex cone angle which forms a cone angle matching seal with the cone angle of the sealing sleeve (5); the lower end of the valve needle sleeve (4) is provided with a concave cone angle which forms a cone angle matching seal with the cone angle of the thimble (3).
6. Pure mechanism sealed glue injection device according to claim 1, characterised in that it comprises three sealing points, where:
sealing point 1: the sealing sleeve (5) and the valve needle sleeve (4) are matched and sealed through a taper angle; sealing point 2: the valve needle sleeve (4) and the thimble (3) are matched and sealed through a taper angle; sealing point 3: the thimble (3) and the gun nozzle are matched and sealed through a taper angle.
7. A pure mechanism sealed glue injection method is characterized by comprising the following steps:
step 1, when the air cylinder (1) extends out, a piston rod of the air cylinder drives the thimble (3) to push forwards, the sealing point 1 and the sealing point 3 are sealed, a gun nozzle is closed, and glue injection is stopped;
and 2, when the air cylinder (1) retracts, the piston rod of the air cylinder drives the thimble (3) to move backwards, the sealing point 2 is sealed, the gun nozzle is opened, and glue injection is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638510.3A CN112827751A (en) | 2020-12-31 | 2020-12-31 | Pure-mechanism sealed glue injection device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638510.3A CN112827751A (en) | 2020-12-31 | 2020-12-31 | Pure-mechanism sealed glue injection device and method |
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| Publication Number | Publication Date |
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| CN112827751A true CN112827751A (en) | 2021-05-25 |
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| CN202011638510.3A Pending CN112827751A (en) | 2020-12-31 | 2020-12-31 | Pure-mechanism sealed glue injection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199695A (en) * | 2021-05-31 | 2021-08-03 | 广东铭基高科电子股份有限公司 | Low-pressure glue injection method and glue injection machine using LD-PE material |
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| CN203004232U (en) * | 2012-12-26 | 2013-06-19 | 江天精密制造科技（苏州）有限公司 | Plastic leakage-preventing coordination structure of valve needle and valve needle sleeve of injection mold |
| CN103331238A (en) * | 2013-07-24 | 2013-10-02 | 常熟康尼格科技有限公司 | Valve needle and valve needle sleeve friction pair structure for glue injection gun special for low pressure glue injection machine |
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| CN106862007A (en) * | 2017-01-11 | 2017-06-20 | 大连华工创新科技股份有限公司 | Double-component gluing head |
| CN207535229U (en) * | 2017-08-29 | 2018-06-26 | 深圳市盼的科技有限公司 | A kind of needle-valve hot-runner device |
| CN208997502U (en) * | 2018-08-01 | 2019-06-18 | 嘉兴新亚汽车零部件有限公司 | A kind of tubing seal cutting ferrule |
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2020
- 2020-12-31 CN CN202011638510.3A patent/CN112827751A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203004232U (en) * | 2012-12-26 | 2013-06-19 | 江天精密制造科技（苏州）有限公司 | Plastic leakage-preventing coordination structure of valve needle and valve needle sleeve of injection mold |
| CN103331238A (en) * | 2013-07-24 | 2013-10-02 | 常熟康尼格科技有限公司 | Valve needle and valve needle sleeve friction pair structure for glue injection gun special for low pressure glue injection machine |
| CN205714534U (en) * | 2016-06-14 | 2016-11-23 | 浙江丽威油泵油嘴有限公司 | Many conical surfaces pintle nozzle match-ing parts |
| CN106862007A (en) * | 2017-01-11 | 2017-06-20 | 大连华工创新科技股份有限公司 | Double-component gluing head |
| CN207535229U (en) * | 2017-08-29 | 2018-06-26 | 深圳市盼的科技有限公司 | A kind of needle-valve hot-runner device |
| CN208997502U (en) * | 2018-08-01 | 2019-06-18 | 嘉兴新亚汽车零部件有限公司 | A kind of tubing seal cutting ferrule |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199695A (en) * | 2021-05-31 | 2021-08-03 | 广东铭基高科电子股份有限公司 | Low-pressure glue injection method and glue injection machine using LD-PE material |
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Application publication date: 20210525 |
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