GB2623416A - Injection assembly for feeding viscous filler material as well as method for injection - Google Patents

Injection assembly for feeding viscous filler material as well as method for injection Download PDF

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Publication number
GB2623416A
GB2623416A GB2312692.3A GB202312692A GB2623416A GB 2623416 A GB2623416 A GB 2623416A GB 202312692 A GB202312692 A GB 202312692A GB 2623416 A GB2623416 A GB 2623416A
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GB
United Kingdom
Prior art keywords
organ
injection
return suction
coupling
feeding
Prior art date
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.)
Pending
Application number
GB2312692.3A
Other versions
GB202312692D0 (en
Inventor
Mildenberger Jürgen
Stadtfeld Hubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of GB202312692D0 publication Critical patent/GB202312692D0/en
Publication of GB2623416A publication Critical patent/GB2623416A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B05C5/0212—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 only at particular parts of the articles
    • 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
    • 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
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/002—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces with feed system for supplying material from an external source; Supply controls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
    • B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
    • 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
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/10—Hand tools for removing partially or for spreading or redistributing applied liquids or other fluent materials, e.g. colour touchers
    • 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
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B05C7/06—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

An injection assembly for feeding viscous filler material 4 proceeding from a feed source assembly for the viscous filler material into a closed, sealed housing assembly 6 having at least one feeding port 12 and at least one air discharge port. There is at least one sprue nozzle organ 8 and a coupling organ 10, wherein the sprue nozzle organ comprises a feeding channel 16 having a longitudinal axis LZK and is releasably connectable to the feeding port in a fluid-tight manner in the housing assembly via the coupling organ. There is a return suction assembly 18 connected fluidly to the feeding channel 16 on the sprue nozzle organ, comprising a return suction channel 20 and a return suction device 22, wherein its longitudinal axis LRK extends coaxially to the longitudinal axis LZK.

Description

Injection assembly for feeding viscous filler material as well as method for injection The invention relates to an injection assembly for feeding viscous filler material into a housing assembly, for example a battery module. The invention also relates to a method for injection of viscous filler material into the housing assembly.
In housing arrangements, for example of battery modules for use in motor vehicles or aircraft, the individual battery cell must be heated as optimally as possible during the power consumption or the power output in order to avoid damage to the cell. For this purpose, a very well thermally conductive viscous filler material (also referred to as a gap filler) is introduced in the battery modules between the battery cell and a mostly metallic housing inside wall in order to ensure the heat transfer from the battery cell to the actual heat transfer medium. The filler material additionally assumes the task of compensating for manufacturing-related tolerances of the housing assembly and also of the battery cells themselves in order to ensure an optimum connection of the heat-dissipating battery surfaces to the housing assembly.
In so-called integral housing arrangements, which represent a self-contained geometry, injection of the viscous filler material occurs through one or more feeding ports into the present encapsulated gaps between the battery surfaces and the housing inside wall. The feeding port should be selected such that the injection operation is not hindered by different cell geometries or other geometry-influencing tolerances in the filling process. Preferably, injection is done from an end face, such that the filler material is then forced upwards, ideally via a manifold, against gravity, towards an air discharge port. It is desirable that a uniform flow front be created, because heavily premature regions of the flow front can lead to air bubbles being trapped, and thus the battery module is sorted out as a reject due to insufficient local cell cooling. The front sprue has the advantage of a simpler flow front design, but it also has the disadvantage that the injection pressure driving the viscous filler increases linearly with the flow path. The feeding port is thus at the highest injection pressure, which can then cause battery cells located in this region to be locally exposed above their allowable pressure load limit. Seals that have the task of coupling the filler material to the module housing only in the region of the heat transfer are also heavily stressed by the injection pressure Another option is surface (or central) injection of filler material. Advantageously, the at least one supply port is positioned in the middle of the projection of the volume to be filled, because the flow path and thus the injection pressure are thus halved with the same geometry compared to a front-side injection. During the injection operation, there is a pressure gradient in the inflowing medium, which has the maximum value at the injection point and the minimum value at the flow front. When the state of the volumetric filling is reached, the injection pressure increases at different rates and intensity depending on the injection strategy. In this case, a distinction is basically made between a pressure-controlled and a volumetric flow-controlled injection strategy, wherein both strategies can also be used simultaneously.
In the case of pressure control, the injection pressure is specified as the target variable and the measured injection pressure is controlled as the actual variable. This strategy results in the flow front speed not being constant, but rather decreasing from the start of injection (speed maximum) to the end of injection (speed minimum). This strategy ensures that the injection pressure does not exceed the maximum pressure load imparted by the battery cells at any time. This safety has a negative effect in the form of greater injection times compared to the volumetric flow control.
In the volumetric flow control, the injected volume per unit of time is recorded as the target variable, and the volumetric flow rate provided by the injection unit is controlled as the actual variable. This means that the injection pressure can increase sharply in the volumetric filling. This increase is a function of the geometric landscape to be filled, which generates the individual, side-by-side battery cells. If, for example, due to the tolerances of the cell height set by the production of the cells, only cells are installed at the upper tolerance band in relation to the nominal measure, the gap between the cell surface and the module wall will be relatively small. This causes the viscous filler material to require higher injection pressures at a constant flow rate in order to fill the volume, but the gap also fills faster (compared to the nominal gap).
Because the control of the injection operation cannot in all cases be performed optically (opaque module housing) and because the introduction of sensor technology into the module housing is not economical for detecting the injection operation status, actual process values generated by external sensors can only be used for process control.
Volumetric flow as well as pressure values must be taken up as close as possible to the actual injection point so that the system-side interference effects on these actual variables can be kept as small as possible. However, because there is no consistent filling volume per injection operation due to the tolerance fields of cells and profile housing, the injected volume can only be used as an auxiliary process variable with respect to quality assurance of the injection operation. From this fact, it can be seen that in any case a positive pressure is created in the volume filled with filler material. After the injection has been switched off, this positive pressure cannot drop to ambient pressure with previous volumetric filling, as long as there is no volume adjustment to lower the pressure. This pressure drop occurs, for example, when the sprue nozzle organ is disconnected from the feeding port and thus the excess volume can escape. Depending on the viscosity and the rheological behaviour of the filler material, this can happen very quickly or even somewhat slower.
In addition, the positive pressure results in an elastic bulging of the housing assembly, thereby overloading the cavity to be filled with filler material even more, and therefore still additional filler material exits the feeding port upon decoupling.
This leaked filler material must be absorbed, and then the surface must be additionally cleaned. These additional work steps require a high amount of time and thus cost, especially in large-scale applications.
From the prior art, such as US 4,516,702 A, DE 10 2004 032 273 B4, and EP 1 147 820 Bl, applicators of sealing material, for example for wafers, are known, each of which have costly return suction arrangements in order to suck up excess material upon completion of the application procedure. However, such applicator devices are not suitable for use in an injection assembly for injection of viscous filler material into a housing assembly.
The invention therefore seeks to avoid the aforementioned features in a simple and inexpensive manner.
An aspect of the present invention provides an injection assembly for feeding viscous filler material proceeding from a feed source assembly for the viscous filler material into a closed, sealed housing assembly having at least one feeding port and at least one air discharge port, wherein at least one sprue nozzle organ and a coupling organ are provided, wherein the sprue nozzle organ comprises a feeding channel having a longitudinal axis LzK and is releasably connectable to the feeding port in a fluid-tight manner in the housing assembly via the coupling organ, wherein a return suction assembly connected fluidly to the feeding channel is provided on the sprue nozzle organ, comprising a return suction channel and a return suction device, wherein its longitudinal axis LRK extends coaxially to the longitudinal axis LzK.
The injection assembly according to the invention is characterized in that it is very simple and inexpensive to manufacture and use, wherein the fluid material that escapes due to the residual pressure reduction can be particularly easily collected.
In a particularly advantageous embodiment, the return assembly as the return suction device comprises a hollow piston that is movably supported in the feeding channel of the sprue nozzle organ configured as a return suction channel and a drive organ cooperating therewith at least in one direction. The drive organ can comprise a spring organ, which naturally only acts in one direction and, by the action of the robotic arm, for example, thus keeps the hollow piston under a bias against the sprue nozzle organ, wherein the sprue nozzle organ can thereby also be pressed against the housing assembly. Here, the sprue nozzle organ can be part of a robotic arm of an automated manufacturing plant. The force that must be exerted in order to move the reciprocating piston against the spring organ can be exerted by the robotic arm. Thus, for example, after the injection operation is completed, a back-stroke movement can then take place by the robotic arm in the direction of the spring force in order to release the return suction channel and the associated return suction volume. In an alternative embodiment, the drive element can be an actuator.
In a particularly simple embodiment of the injection assembly, the coupling organ is provided on the sprue nozzle organ. Alternatively, the coupling organ can also be configured as a single part, which can be inserted into the feeding port.
The problem is also solved by a method for injection of viscous filler material by means of such an injection assembly, wherein, in a first step, the sprue nozzle organ is fluidly coupled to the feeding port; in a second step, the injection operation of the viscous fluid material is started; in a third step, the injection operation is monitored via a volume flow control with a predetermined volume per unit of time as the target variable and/or via a pressure control with a predetermined injection pressure as the target variable; in a fourth step, the injection operation is stopped when the target quantity is reached; in a fifth step, the return suction device is actuated such that a return suction volume is provided; and, in a sixth step, the sprue nozzle organ is disconnected, wherein, if the coupling organ is integral, the coupling organ is disconnected from the feeding port or, if the coupling organ is a single part, the sprue nozzle organ is detached from the coupling organ.
An embodiment of the invention will be explained in further detail with reference to a drawing, in which the following are shown: Fig. 1 a schematic cross-sectional view of an injection assembly connected to a housing assembly in a first position, and Fig. 2 a schematic cross-sectional view of an injection assembly connected to a housing assembly in a second position.
An injection assembly 2 according to an embodiment of the invention, shown in Fig. 1 and Fig. 2, for feeding viscous filler material 4 into a closed, sealed housing assembly 6, comprises substantially a sprue nozzle organ 8 and a coupling organ 10. The coupling organ 10 is connected in a releasably fluid-tight manner to a feeding port 12 of a side wall part 14 of the housing assembly 6. The sprue nozzle organ 8 is fluidly connected to a feed source assembly via an injection lance, not further illustrated, in order to guide the viscous filler material 4 via a feeding channel 16 with a longitudinal axis LzKto the feeding port 12. The viscous filler material can be, for example, a 1K or a 2K gap filler.
In order to now prevent an unwanted leakage of the filler material 4 after the end of the injection operation, a return suction assembly 18 is provided, being fluidly connected to the feeding channel 16, wherein the feeding channel 16 forms a return suction channel 20. A return suction device 22 is also provided in the feeding channel 16, whose longitudinal axis LRK extends coaxially to the longitudinal axis LzK. The longitudinal axes refer to the respective fluid channels 16, 20. In the present exemplary embodiment, the return suction device 22 consists substantially of a drive element 24 and a hollow piston 26 cooperating therewith and movably arranged in the feeding channel 16. In the present case, the drive organ 24 consists substantially of a spring organ 24 and a robotic arm cooperating therewith, which is not shown further. The spring organ 24 naturally only acts in one direction and, by the action of the robotic arm, thus keeps the hollow piston 26 under a bias against the sprue nozzle organ 8, wherein the sprue nozzle organ 8 can thereby also be pressed against the housing assembly 6.
Fig. 1 now shows the injection assembly 2 during an injection operation. The hollow piston 26 is in a forward position here. The filler material 4 flows undisturbed through the hollow piston 26 into the housing assembly 6.
In case of a filled housing assembly 6, the injection pressure now increases with the same specification. The injection pressure is switched off, but the residual pressure build-up is predominantly maintained. In order to selectively reduce this residual pressure without leaving filler material on an outside of the housing assembly 6, the injection assembly 2 is transferred into the position shown in Fig. 2.
In Fig. 2, the hollow piston 26 of the return suction assembly 18 is moved to a rearmost position by the action of the robotic arm, for example, wherein a residual biasing force of the spring organ 24 is maintained in order to continue pushing the sprue nozzle organ 8 against the housing assembly 6. However, it should be clear that, in this context, many possibilities for the design of the spring organ, in particular also for the direction of the biasing force, are possible. Alternatively, of course, an actuator can also be used which acts on the hollow piston 26. This will then release the return suction channel 20, which will thus serve as the additional volume for excess filler material 4. The filler material 4 is guided into the return suction channel through the existing residual pressure. This return flow into the return suction channel 20 is also supported by the retraction of the hollow piston 26, thereby creating a negative pressure in the return suction channel 20.
In summary, a method for injection of viscous filler material 4 by means of the injection assembly 2 according to this embodiment of the invention proceeds as follows: In a first step, the sprue nozzle organ 8 is fluidly coupled to the feeding port 12 via the coupling organ 10. In a second step, the injection operation of the viscous fluid material 4 is then started. In a third step, the injection operation is monitored via a volumetric flow control, not shown further, with a predetermined volume per unit of time as the target variable and/or via a pressure control with a predetermined injection pressure as the target variable and is stopped in a fourth step upon reaching the target variable. In a fifth step, the return device 22, in this embodiment the actuator, is now actuated such that a return volume is provided in the return suction channel 20. Finally, in a sixth step, the sprue nozzle organ 8 is disconnected, wherein, in the case of an integrated coupling organ 10, the coupling organ 10 is disconnected from the feeding port 12 or, in the case of a coupling organ 10 as a single part, the sprue nozzle organ 8 is detached from the coupling organ 10.
If rinsing/cleaning of the sprue nozzle organ 8 and the return suction assembly 18 is required due to the canister time of the filler material 4, the hollow piston 26 is first moved back to the home position (according to Fig. 1) and then the sprue nozzle organ 8 is rinsed in order to be reinserted thereafter.

Claims (7)

  1. Claims 1. An injection assembly for feeding viscous filler material proceeding from a feed source assembly for the viscous filler material into a closed, sealed housing assembly having at least one feeding port and at least one air discharge port, wherein at least one sprue nozzle organ and a coupling organ are provided, wherein the sprue nozzle organ comprises a feeding channel having a longitudinal axis LZK and is releasably connectable to the feeding port in a fluid-tight manner in the housing assembly via the coupling organ, wherein a return suction assembly connected fluidly to the feeding channel is provided on the sprue nozzle organ, comprising a return suction channel and a return suction device, wherein its longitudinal axis LRK extends coaxially to the longitudinal axis LZK.
  2. 2. An injection assembly according to claim 1, wherein the return suction assembly as the return suction device comprises a hollow piston movably mounted in the feeding channel of the sprue nozzle organ configured as the return suction channel and a drive organ that cooperates therewith in at least one direction.
  3. 3. An injection assembly according to claim 2, wherein the drive organ comprises a spring organ that holds the hollow piston under a bias against the sprue nozzle organ.
  4. An injection assembly according to claim 2, wherein the drive organ is an actuator.
  5. The injection assembly according to any one of claims 1 to 4, wherein the coupling organ is provided on the sprue nozzle organ.
  6. 6. The injection assembly according to any one of claims 1 to 4, wherein the coupling organ is configured as a single part, which can be inserted into the feeding port.
  7. 7. A method for injection of viscous filler material by means of an injection assembly according to any one of the preceding claims, wherein, in a first step, the sprue nozzle organ is fluidly coupled to the feeding port via the coupling organ; in a second step, the injection operation of the viscous fluid material is started; in a third step, the injection operation is monitored via a volumetric flow control with a predetermined volume per unit of time as the target variable and/or via a pressure control with a predetermined injection pressure as the target variable; in a fourth step, the injection operation is stopped when the target variable is reached; in a fifth step, the return suction device is actuated such that a return suction volume is provided; and, in a sixth step, the sprue nozzle organ is disconnected, wherein, if the coupling organ is integral, the coupling organ is disconnected from the feeding port or, if the coupling organ is a single part, the sprue nozzle organ is detached from the coupling organ.
GB2312692.3A 2022-08-24 2023-08-18 Injection assembly for feeding viscous filler material as well as method for injection Pending GB2623416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022121353.6A DE102022121353B4 (en) 2022-08-24 2022-08-24 Injection arrangement for supplying viscous filling material and method for injection

Publications (2)

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GB202312692D0 GB202312692D0 (en) 2023-10-04
GB2623416A true GB2623416A (en) 2024-04-17

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GB2312692.3A Pending GB2623416A (en) 2022-08-24 2023-08-18 Injection assembly for feeding viscous filler material as well as method for injection

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KR (1) KR20240028305A (en)
CN (1) CN117619656A (en)
DE (1) DE102022121353B4 (en)
GB (1) GB2623416A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516702A (en) * 1982-12-06 1985-05-14 Copar Corporation Dripless valve
US6334554B1 (en) * 2000-04-17 2002-01-01 Illinois Tool Works Inc. Snuffback valve for hot melt adhesive
CN113926649A (en) * 2021-10-22 2022-01-14 陈王强 Suck-back dispensing valve for dispensing machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4035728B2 (en) 2003-07-07 2008-01-23 Ｓｍｃ株式会社 Suck back valve
ITMO20060197A1 (en) 2006-06-16 2007-12-17 Kemac S P A INJECTOR FOR VISCOUS FLUIDS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516702A (en) * 1982-12-06 1985-05-14 Copar Corporation Dripless valve
US6334554B1 (en) * 2000-04-17 2002-01-01 Illinois Tool Works Inc. Snuffback valve for hot melt adhesive
CN113926649A (en) * 2021-10-22 2022-01-14 陈王强 Suck-back dispensing valve for dispensing machine

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Publication number Publication date
KR20240028305A (en) 2024-03-05
CN117619656A (en) 2024-03-01
DE102022121353B4 (en) 2024-03-28
GB202312692D0 (en) 2023-10-04
DE102022121353A1 (en) 2024-02-29

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