CN116273689A - Automatic dispensing device for LCD display screen - Google Patents
Automatic dispensing device for LCD display screen Download PDFInfo
- Publication number
- CN116273689A CN116273689A CN202310234080.6A CN202310234080A CN116273689A CN 116273689 A CN116273689 A CN 116273689A CN 202310234080 A CN202310234080 A CN 202310234080A CN 116273689 A CN116273689 A CN 116273689A
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- China
- Prior art keywords
- glue
- cavity
- dispensing
- cylinder
- back suction
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- 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.)
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Classifications
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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
- B05C5/0208—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 for applying liquid or other fluent material to separate articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
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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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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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
- B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
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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
- B05C5/0225—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 characterised by flow controlling means, e.g. valves, located proximate the outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Coating Apparatus (AREA)
Abstract
The invention discloses an automatic dispensing device of an LCD (liquid crystal display) display screen, which comprises a dispensing cylinder and a dispensing nozzle arranged at the bottom of the dispensing cylinder, wherein the dispensing cylinder is arranged in a U-shaped supporting frame, the upper end of the supporting frame is arranged on a mounting transverse plate, a reciprocating cylinder is arranged above the mounting transverse plate, a piston rod of the reciprocating cylinder is connected with the top of the dispensing cylinder, an air inlet cavity, a glue pressing cavity, a preheating cavity and a glue dispensing cavity are sequentially arranged in the dispensing cylinder from top to bottom, a separation shoulder is arranged between the glue pressing cavity and the preheating cavity, a jacking seat is arranged between the preheating cavity and the glue dispensing cavity, an air joint is arranged on the side wall of the air inlet cavity, and a glue supplementing joint is arranged on the side wall of the preheating cavity; a suck-back mechanism for sucking glue back is arranged on the outer side of the dispensing nozzle; according to the invention, the back suction mechanism is arranged, after dispensing, glue in the dispensing nozzle is sucked back, so that the phenomena of glue hanging and glue pulling on the dispensing nozzle can be effectively reduced, and the dispensing quality of the LCD display screen is improved.
Description
Technical Field
The invention relates to the technical field of LCD display screen production, in particular to an automatic dispensing device for an LCD display screen.
Background
The LCD is a short name of liquid crystal display, the LCD is constructed by placing a liquid crystal box (1) between two parallel glass substrates, arranging a TFT (thin film transistor) on the lower substrate glass, arranging a color filter on the upper substrate glass, and controlling the rotation direction of liquid crystal molecules by changing signals and voltages on the TFT, thereby achieving the purpose of controlling whether polarized light of each pixel point is emergent or not to achieve the display purpose. Liquid crystal displays are used in digital watches and in mobile display models for many portable computers. The invention provides a solution to the problems that the production quality of an LCD (liquid crystal display) screen is affected by the fact that glue is easily coated and pulled on a glue coating nozzle when the existing automatic glue coating device is used for coating glue in the production and processing process of the LCD screen.
Disclosure of Invention
The invention aims to provide an automatic dispensing device for an LCD display screen.
The technical aim of the invention is realized by the following technical scheme:
the automatic dispensing device for the LCD display screen comprises a dispensing cylinder and a dispensing nozzle arranged at the bottom of the dispensing cylinder, wherein the dispensing cylinder is arranged in a U-shaped supporting frame, the upper end of the supporting frame is arranged on an installation transverse plate, a reciprocating cylinder is arranged above the installation transverse plate, a piston rod of the reciprocating cylinder is connected with the top of the dispensing cylinder, an air inlet cavity, a glue pressing cavity, a preheating cavity and a glue dispensing cavity are sequentially arranged in the inner cavity of the dispensing cylinder from top to bottom, a glue pressing piston is arranged in the glue pressing cavity, a separation shoulder is arranged between the glue pressing cavity and the preheating cavity, a jacking seat is arranged between the preheating cavity and the glue dispensing cavity, an air joint is arranged on the side wall of the air inlet cavity, and a glue supplementing joint is arranged on the side wall of the preheating cavity; the dispensing nozzle consists of a sealing block at the upper end and a nozzle at the lower end, a reset spring in a compression state is arranged between the sealing block and a jacking seat, the bottom of a dispensing cavity is conical, the bottom of the sealing block is in a round table shape matched with the dispensing cavity, a sealing ring I is arranged on the conical surface, the upper end of the nozzle is connected with the sealing block, the lower end of the nozzle extends out of a dispensing cylinder from a dispensing hole, a glue inlet through hole is arranged at the upper end of the nozzle, a sealing groove for installing a sealing ring II is arranged on the inner wall of the dispensing hole, the sealing ring II is bonded and sealed with the outer wall of the nozzle, a propping block is arranged on the outer side wall of the nozzle extending out of the dispensing cylinder, a through hole for the lower end of the nozzle to pass through is formed in the propping frame, the size of the through hole is smaller than that of the propping block, and a suck-back mechanism for sucking glue is arranged on the outer side of the dispensing nozzle.
Further, the back suction mechanism comprises a back suction block, a connecting rod, a guide connecting rod, a back suction cavity and a back suction piston, wherein the back suction block is arranged on the side wall of the spray pipe, the back suction cavity is arranged in the back suction block, the back suction piston is arranged in the back suction cavity, the bottom of the back suction cavity is connected with a middle hole of the spray pipe, the upper end of the back suction piston is connected with the guide connecting rod, the guide connecting rod penetrates through a guide hole on the propping frame to be connected with the connecting rod, and one end of the connecting rod is fixedly connected with the side wall of the bottom of the dispensing cylinder.
Further, the number of the glue inlet through holes is multiple, and the glue inlet through holes are uniformly distributed on the circumference of the spray pipe below the sealing block.
Further, the glue supplementing joint is arranged at the top of the preheating cavity and below the separation shoulder.
Further, the side wall of the preheating cavity is provided with an electric heating wire I; the bottom cone of the dispensing cavity is provided with an electric heating wire II, and the bottom cone side wall of the dispensing cavity is provided with an electric heating wire II.
Further, an electric heating wire III is arranged on the back suction block and outside the back suction cavity.
Furthermore, a positioning lug extending into the reset spring is arranged below the jacking seat, and the side wall of the jacking seat is connected with the inner wall of the dispensing cylinder through a connecting rod.
In summary, the invention has the following beneficial effects: according to the invention, the back suction mechanism is arranged, after dispensing, glue in the dispensing nozzle is sucked back, so that the phenomena of glue hanging and glue pulling on the dispensing nozzle can be effectively reduced, and the dispensing quality of the LCD display screen is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the dispensing cartridge of the present invention;
FIG. 3 is a partial schematic view of a dispensing cartridge;
FIG. 4 is an enlarged partial view of portion A of FIG. 3;
fig. 5 is a schematic structural view of the tightening seat of the present invention.
In the figure, 1, a dispensing cylinder; 2. a support frame; 3. mounting a transverse plate; 4. a reciprocating cylinder; 5. dispensing spray heads; 6. a suck-back block; 7. a glue pressing cavity; 8. a preheating chamber; 9. dispensing cavity; 10. a glue pressing piston; 11. an air joint; 12. repairing the glue joint; 13. a pushing seat is tightly pressed; 14. an electric heating wire I; 15. an electric heating wire II; 16. dispensing holes; 17. sealing grooves; 18. a connecting rod; 19. a piston rod; 20. a return spring; 21. a sealing block; 22 seal ring I; 23. a glue inlet through hole; 24. abutting blocks; 25. a second sealing ring; 26. a guide link; 27. a suck-back chamber; 28. a suck-back piston; 29. an electric heating wire III; 30. positioning the protruding blocks; 31. and (5) connecting a rod.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying drawings, will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is evident that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-5, an automatic dispensing device for an LCD display screen comprises a dispensing cylinder 1 and a dispensing nozzle 5 installed at the bottom of the dispensing cylinder 1, wherein the dispensing cylinder 1 is installed in a U-shaped supporting frame 2, the upper end of the supporting frame 2 is installed on an installation transverse plate 3, a reciprocating cylinder 4 is installed above the installation transverse plate 3, a piston rod 19 of the reciprocating cylinder 4 is connected with the top of the dispensing cylinder 1, the dispensing cylinder 1 is driven to move relative to the supporting frame 2 through the reciprocating cylinder 4, an air inlet cavity, a pressure-stabilizing cavity 7, a preheating cavity 8 and a dispensing cavity 9 are sequentially arranged in the dispensing cylinder 1 from top to bottom, a pressure-stabilizing piston 10 is installed in the pressure-stabilizing cavity 7, a separation shoulder is arranged between the pressure-stabilizing cavity 7 and the preheating cavity 8, a pressing seat 13 is arranged between the preheating cavity 8 and the dispensing cavity 9, an air connector 11 is arranged on the side wall of the air inlet cavity, the pressure-stabilizing piston is added with air pressure, the air pump at the upper end of the pressure-stabilizing piston 10 can be connected with an upper pressure-stabilizing valve, and the pressure-stabilizing cavity 12 is arranged on the upper side wall of the dispensing cylinder through the pressure-stabilizing valve, and the pressure-stabilizing valve is provided with a pressure-supplementing connector 12; the glue dispensing nozzle 5 comprises a sealing block 21 at the upper end and a spray pipe at the lower end, a return spring 20 in a compression state is arranged between the sealing block 21 and the jacking seat 13, the bottom of the glue dispensing cavity 9 is conical, the bottom of the sealing block 21 is in a round table shape matched with the glue dispensing cavity 9, a first sealing ring 22 is arranged on the conical surface, the upper end of the spray pipe is connected with the sealing block 21, the lower end of the spray pipe extends out of the glue dispensing hole 16 from the glue dispensing cylinder 1, a glue inlet through hole 23 is arranged at the upper end of the spray pipe, a sealing groove 17 for installing a second sealing ring 25 is arranged on the inner wall of the glue dispensing hole 16, the second sealing ring 25 is in fit sealing with the outer wall of the spray pipe, a butting block 24 is arranged on the outer side wall of the spray pipe extending out of the glue dispensing cylinder 1, a through hole for the lower end of the spray pipe is arranged on the butting frame 2, the through hole is smaller than the size of the butting block 24, and a suck-back mechanism for sucking glue is arranged on the outer side of the glue dispensing nozzle 5.
Further, as shown in fig. 3 and fig. 4, the suck-back mechanism includes a suck-back block 6, a connecting rod 18, a guiding connecting rod 26, a suck-back cavity 27 and a suck-back piston 28, the suck-back block 6 is disposed on a side wall of the spray pipe, the suck-back cavity 27 is disposed in the suck-back block 6, the suck-back piston 28 is mounted in the suck-back cavity 27, a bottom of the suck-back cavity 27 is connected with a middle hole of the spray pipe, an upper end of the suck-back piston 28 is connected with the guiding connecting rod 26, the guiding connecting rod 26 penetrates through a guiding hole on the support 2 to be connected with the connecting rod 18, one end of the connecting rod 18 is fixedly connected with a side wall of the bottom of the dispensing cylinder 1, and glue in the spray pipe can be sucked back through the suck-back mechanism, so that glue hanging phenomenon on the dispensing nozzle 5 is avoided.
Further, the number of the glue inlet through holes 23 is plural, the glue inlet through holes 23 are uniformly distributed on the circumference of the nozzle below the sealing block 21, and the glue enters the nozzle through the glue inlet through holes 23 under the pushing of the glue pressing piston 10.
Further, the glue joint 12 is installed at the top of the preheating chamber 8 below the separating shoulder.
Further, the side wall of the preheating cavity 8 is provided with an electric heating wire I14; the bottom cone of the dispensing cavity 9 is provided with an electric heating wire II 15, and the side wall of the same dispensing cavity 7 can be provided with an electric heating wire.
Further, an electric heating wire III 27 is arranged on the back suction block 6 and outside the back suction cavity 27, glue in the back suction cavity 27 can be used for next glue dispensing, and the electric heating wire III 27 is used for heating the glue in the back suction cavity 27.
Further, as shown in fig. 5, a positioning protrusion 30 extending into the return spring 20 is provided below the tightening seat 13, and a side wall of the tightening seat 13 is connected with an inner wall of the dispensing cylinder 1 through a connecting rod 31.
Working principle: firstly, glue is fully filled into a dispensing cylinder 1 through a glue filling joint 12, then a valve on a glue filling pipeline is connected by the glue filling joint 12, the glue is isolated from a glue source of the glue filling, air is pressed in through an air joint 11, the pressure at the upper end of a glue pressing piston 10 is stable, when the glue is dispensed, a reciprocating cylinder 4 drives the dispensing cylinder 1 to move downwards, when a butting block 24 contacts with a butting frame 2, a sealing block 21 of a glue dispensing nozzle 5 is pushed to move upwards to compress a reset spring, the sealing block 21 is separated from a bottom sealing surface of the dispensing cylinder 1, the glue is pressed into a spray pipe under the action of the glue pressing piston 10, dispensing is carried out, meanwhile, a back suction piston 28 also moves downwards, glue in a back suction cavity 27 is supplemented into the spray pipe for dispensing, after the dispensing is finished, the reciprocating cylinder 4 drives the dispensing cylinder 1 to move upwards, the back suction piston 28 moves upwards, the glue in the back suction cavity 27 is prevented from hanging glue and pulling glue phenomenon, and after the butting block 24 is separated from the bottom frame 2, the sealing block 21 moves downwards relative to the dispensing cylinder 1 under the action of the reset spring 20, and the glue is stopped from being attached to the bottom sealing cylinder 1.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (7)
1. The utility model provides an automatic dispensing device of LCD display screen, includes dispensing cylinder (1) and installs in dispensing shower nozzle (5) of dispensing cylinder (1) bottom, its characterized in that: the glue dispensing device is characterized in that the glue dispensing barrel (1) is arranged in a U-shaped propping frame (2), the upper end of the propping frame (2) is arranged on an installation transverse plate (3), a reciprocating cylinder (4) is arranged above the installation transverse plate (3), a piston rod (19) of the reciprocating cylinder (4) is connected with the top of the glue dispensing barrel (1), an air inlet cavity, a glue pressing cavity (7), a preheating cavity (8) and a glue dispensing cavity (9) are sequentially arranged in the inner cavity of the glue dispensing barrel (1) from top to bottom, a glue pressing piston (10) is arranged in the glue pressing cavity (7), a separation shoulder is arranged between the glue pressing cavity (7) and the preheating cavity (8), a jacking seat (13) is arranged between the preheating cavity (8) and the glue dispensing cavity (9), an air joint (11) is arranged on the side wall of the air inlet cavity, and a glue supplementing joint (12) is arranged on the side wall of the preheating cavity (8); the utility model provides a glue dispensing nozzle (5) comprises sealing block (21) and the spray tube of lower extreme of upper end, be equipped with reset spring (20) of compression state between sealing block (21) and tight seat in top (13), the bottom in some glue chamber (9) is conical, the bottom in sealing block (21) is the round platform shape with some glue chamber (9) adaptation, and the conical surface is equipped with sealing washer one (22), the upper end and the sealing block (21) of spray tube are connected, and glue dispensing cylinder (1) are stretched out from some glue hole (16) in the lower extreme of spray tube, and the upper end of spray tube is equipped with into gluey through-hole (23), the inner wall in some glue hole (16) is equipped with seal groove (17) of installation sealing washer two (25), sealing washer two (25) are sealed with the laminating of the outer wall of spray tube, the outer wall that the spray tube stretches out some glue cylinder (1) is equipped with support piece (24), be equipped with the through-hole that supplies spray tube lower extreme to pass on support frame (2), and the size that the through-hole size is less than support piece (24), the outside of glue dispensing nozzle (5) is equipped with back suction mechanism.
2. The automatic dispensing device for an LCD display screen of claim 1, wherein: the back suction mechanism comprises a back suction block (6), a connecting rod (18), a guide connecting rod (26), a back suction cavity (27) and a back suction piston (28), wherein the back suction block (6) is arranged on the side wall of the spray pipe, the back suction cavity (27) is arranged in the back suction block (6), the back suction piston (28) is arranged in the back suction cavity (27), the bottom of the back suction cavity (27) is connected with a middle hole of the spray pipe, the upper end of the back suction piston (28) is connected with the guide connecting rod (26), the guide connecting rod (26) penetrates through the guide hole on the support (2) to be connected with the connecting rod (18), and one end of the connecting rod (18) is fixedly connected with the bottom side wall of the dispensing cylinder (1).
3. The automatic dispensing device for LCD panels of claim 2, wherein: the number of the glue inlet through holes (23) is multiple, and the glue inlet through holes (23) are uniformly distributed on the circumference of the spray pipe below the sealing block (21).
4. An LCD display screen automatic dispensing apparatus according to claim 3, wherein: the glue supplementing joint (12) is arranged at the top of the preheating cavity (8) and below the separation shoulder.
5. The automatic dispensing device for an LCD display screen of claim 4, wherein: an electric heating wire I (14) is arranged on the side wall of the preheating cavity (8); the bottom of the dispensing cavity (9) is arranged in a conical mode, and an electric heating wire II (15) is arranged on the conical side wall of the bottom of the dispensing cavity (9).
6. The automatic dispensing device for an LCD display screen of claim 5, wherein: and an electric heating wire III (27) is arranged on the back suction block (6) and outside the back suction cavity (27).
7. The automatic dispensing device for an LCD display screen of claim 6, wherein: the lower part of the jacking seat (13) is provided with a positioning lug (30) extending into the reset spring (20), and the side wall of the jacking seat (13) is connected with the inner wall of the dispensing cylinder (1) through a connecting rod (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310234080.6A CN116273689A (en) | 2023-03-13 | 2023-03-13 | Automatic dispensing device for LCD display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310234080.6A CN116273689A (en) | 2023-03-13 | 2023-03-13 | Automatic dispensing device for LCD display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116273689A true CN116273689A (en) | 2023-06-23 |
Family
ID=86825234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310234080.6A Pending CN116273689A (en) | 2023-03-13 | 2023-03-13 | Automatic dispensing device for LCD display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116273689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2623177A (en) * | 2022-08-24 | 2024-04-10 | Porsche Ag | Injection assembly for feeding viscous filler material as well as method for injection |
-
2023
- 2023-03-13 CN CN202310234080.6A patent/CN116273689A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2623177A (en) * | 2022-08-24 | 2024-04-10 | Porsche Ag | Injection assembly for feeding viscous filler material as well as method for injection |
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