GB1566531A - Ultrasonic welding - Google Patents
Ultrasonic welding Download PDFInfo
- Publication number
- GB1566531A GB1566531A GB1670/78A GB167078A GB1566531A GB 1566531 A GB1566531 A GB 1566531A GB 1670/78 A GB1670/78 A GB 1670/78A GB 167078 A GB167078 A GB 167078A GB 1566531 A GB1566531 A GB 1566531A
- Authority
- GB
- United Kingdom
- Prior art keywords
- components
- joint
- ultrasonic welding
- location
- welding
- 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.)
- Expired
Links
- 238000003466 welding Methods 0.000 title claims description 41
- 238000000034 method Methods 0.000 claims description 24
- 239000000047 product Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Classifications
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7855—Provisory fixing
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/58—Snap connection
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/541—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles a substantially flat extra element being placed between and clamped by the joined hollow-preforms
- B29C66/5412—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles a substantially flat extra element being placed between and clamped by the joined hollow-preforms said substantially flat extra element being flexible, e.g. a membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7496—Pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7506—Valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Valve Housings (AREA)
Description
(54) ULTRASONIC WELDING
(71) We, POLYPLASTICS CO. LTD., a Japanese Company, of 30, 2-chome,
Azuchimachi, Higashi-ku, Osaka-shi, Japan, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a method of ultrasonically welding together two components each of a material capable of being so welded. In particular the components are of a synthetic plastics material.
In the assembly of a product in which the two components to be welded together are resiliently urged apart, for example by a spring disposed between them, problems occur in performing the welding step accurately, efficiently and economically in that it is difficult to pre-locate the two components in the desired juxtaposition prior to and during the welding step.
It is previously known to pre-locate two components prior to an ultrasonic welding step by forming them to be interengageable with one another by an interference fit. For example one component may have a male element which is an interference fit within a female element of the second component.
Such an arrangement is not always satisfactory when the two components as preassembled are resiliently urged apart.
For example the adequacy of the interference fit depends upon the accuracy with which the two components are preformed. Alternatively, one of the components may be shrink fitted on the other to effect the pre-location, but this involves the additional complication of a heating or cooling step. Alternatively again, an additional member may be employed to effect the pre-location. For example clamp or peg means may be employed to hold the two components in interengagement prior to the welding step. The invention aims to provide a viable alternative in view of these and other problems.
According to this invention there is provided a method of ultrasonically welding two components each of a material capable of being so welded in which the two components are so formed that they can be interlocked simply by being bodily manipulated relative to one another, said two components being so interlocked prior to an ultrasonic welding step to effect writing of the components one with the other.
The pre-location step can be accomplished in a number of ways. For example the two components may be formed se as to be interengageable by a snap fixing whereby the components are interlocked by interengaging abutments provided on the respective members. The joint between the components so form on pre-location may resemble any joint known in joinery, in particular a bead joint, a scarf joint or a dovetail. Alternatively, pre-location may be achieved by a screwed joint or by a bayonet joint. However, in each case the pre-location will be achieved by a manipulation of the two components bodily to lock them together and will avoid the necessity of providing additional locking members such as pegs or clamps.
Preferably, once the pre-location has been achieved by the interlocking joint, the welding step will be so carried out as to apply the ultrasonic vibrations to the joint so that the two components become umted or bonded at or in the region of the joint. In some cases after the pre-location step, pressure may be applied to effect relative movement of the two components before the ultrasonic vibrations are generated to weld the components together.
In the drawings:
Figures 1A, 1B and 1C illustrate by diagrammatic sectional view, steps in the production of a diaphragm valve equipped with two components pre-located by a snap fixing and subsequently bonded together by ultrasonic welding,
Figure l A showing the components before the pre-location, that is, the pre-assembly,
Figure 1B showing pre-location, and
Figure 1C showing the final product, that is, after the ultrasonic welding.
Figures 2A, 2B and 2C are schematic sectional views showing steps in the manufacture of a check valve,
Figure 2A showing the components before pre-location,
Figure 2 B showing the pre-assembly after pre-locaxion by snap fixing, but before the ultrasonic welding, and
Figure 2C showing the final product, that is, after the ultrasonic welding.
Figure 3(a) is a detailed sectional view showing part of the snap joint as applied to one of the components of the valve; and Figure 3(b) is a detailed sectional view showing a corresponding snap joint as applied to a mating component of the valve.
Referring to the drawings, the method of the present invention will be explained in further detail with reference to body components 1 and 2 which are repelled from one another resiliently, for example by force of the spring 7 and which yet are required to be joined together by ultrasonic welding.
In the assembly of products having spring mechanism such as a diaphragm valve (shown in Figure 1), a check valve (shown in
Figure 2), if it is difficult to maintain a body component 1 correctly positioned in abutment with a body component 2 because of the spring 7 of a long free length, a fault percentage of the resulting products would naturally increase since precise positioning of the components is extremely difficult in the pre-assembly operation prior to the ultrasonic welding.
In the method of the present invention however, the body components 1 and 2 of a shaped article are provided with an interlocking under-cut structure during moulding, as shown in Figures 1A, 2A and 3, so that after the components have been placed juxtaposed in position they may be manipulated into interlocking engagement before ultrasonic welding, as shown in
Figures 1B and 2B. By this arrangement the components are located in correct positional relationship before the ultrasonic welding, whereby the welding operation becomes extremely easy and provides an extremely high yield.
In accordance with the conventional method, all the internal components must be filled on the work table of the ultrasonic welding machine to thereby prolong the work time on the work table as much, and lower the productivity of the same. In the method of the present invention, on the other hand, the pre-assembly up to the snap-in operation can be carried out at a different place by different labourers so that an operator of the ultrasonic welding machine is liberated from the troublesome pre-assembly operation and thus capable of concentrating exclusively on the welding operation and improving the operational efficiency.
In Figures 1A and 2A, the arrows indicate the direction of manipulation to effect snap fixing, while in Figures 1B and 2B the arrows indicate application of pressure which is applied to effect movement of the components relative to one another immediately prior to bonding by ultrasonic energy.
Figures 3(a) and 3(b) are partial schematic views showing, respectively, the detail of the snap joint formed by interlocking engagement of parts 3 and 4, wherein an undercut engagement A d2 is adapted to be manipulated into engagement by an abutment having a dimension A d2, so that the parts 3 and 4 are interlocked. The symbol Adi indicates the thickness of the weld fillet 5. The pre-location in the method of the present invention may be practised by pre-locating the two components to be joined together by screwing one component transversely into the other or by forming a joint as in a bayonet fixing. If, however, the interlocking of the parts 3 and 4 as depicted in the drawings is accomplished simply by pushing the abument on the part .3 past the abutment on the part 4, then this will involve resilient flexing of one or both of the components during the manipulation to effect interlocking for pre-location.
As will be seen from Figures 1C and 2C the welding is effective to bond the two components together in the region of the mating joint between parts 3 and 4.
WHAT WE CLAIM IS:
1. A method of ultrasonically welding two components each of a material capable of being so welded in which the two components are so formed that they can be interlocked simply by being bodily manipulated relative to one another, said two components being so interlocked prior to an ultrasonic welding step to effect uniting of the components one with the other.
2. A method according to claim 1 wherein the two components are interengageable by a snap fixing so as to bring abutments provided on the components respectively into interlocking relationship one behind the other.
3. A method according to claim 2 wherein the manipulation required to bring the abutments on the respective components into interlocking relationship involves resilient flexing of one or both components.
4. A method according to claim 1 wherein the joint effected by the manipulation to
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1. A method of ultrasonically welding two components each of a material capable of being so welded in which the two components are so formed that they can be interlocked simply by being bodily manipulated relative to one another, said two components being so interlocked prior to an ultrasonic welding step to effect uniting of the components one with the other.
2. A method according to claim 1 wherein the two components are interengageable by a snap fixing so as to bring abutments provided on the components respectively into interlocking relationship one behind the other.
3. A method according to claim 2 wherein the manipulation required to bring the abutments on the respective components into interlocking relationship involves resilient flexing of one or both components.
4. A method according to claim 1 wherein the joint effected by the manipulation to
bring the two components into interlocked pre-location is either a screw joint or a bayonet joint.
5. A method according to claim 1 wherein the joint effected by the manipulation to bring the two components into interlocked pre-location resembles a bead joint, a scarf joint, or a dovetail joint, in each case having been achieved by snap fixing involving during the manipulation, resilient flexing of one or both components.
6. A method according to claim 1 wherein once the pre-location has been achieved by the interlocking, pressure is applied to effect relative movement of the two components before the ultrasonic vibrations are generated to weld the components together.
7. A method according to any of the preceding claims, wherein the welding between the components is applied in those regions of the components where they have been previously interlocked by the pre-location step.
8. A method of ultrasonically welding two components according to claim 1 and substantially as hereinbefore described with reference to the accompanying drawings.
9. A product having two components welded ultrasonically by the method defined in any preceding claim.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP373377A JPS5388883A (en) | 1977-01-17 | 1977-01-17 | Supersonic welding method |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1566531A true GB1566531A (en) | 1980-04-30 |
Family
ID=11565443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1670/78A Expired GB1566531A (en) | 1977-01-17 | 1978-01-16 | Ultrasonic welding |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5388883A (en) |
AU (1) | AU509518B2 (en) |
BE (1) | BE862833A (en) |
BR (1) | BR7800238A (en) |
DE (1) | DE2801699A1 (en) |
FR (1) | FR2377265A1 (en) |
GB (1) | GB1566531A (en) |
IT (1) | IT7819311A0 (en) |
NL (1) | NL7800553A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120598A (en) * | 1982-05-24 | 1983-12-07 | Kangol Magnet Ltd | Encapsulating seat belt buckle |
GB2134847A (en) * | 1983-02-04 | 1984-08-22 | Standard Telephones Cables Ltd | Assembly using ultrasonics |
GB2253263A (en) * | 1991-03-01 | 1992-09-02 | Linemann Halflo Ltd | Non return valve |
CN102052497B (en) * | 2009-10-29 | 2013-03-13 | 浙江三花制冷集团有限公司 | Manufacturing method of switching valve end cover, switching valve end cover and switching valve |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3118897A1 (en) * | 1981-05-13 | 1982-12-02 | Compur-Electronic GmbH, 8000 München | ULTRASONIC WELDING METHOD AND DEVICE |
US4477010A (en) * | 1981-05-27 | 1984-10-16 | Lucas Industries Limited | Method of producing a metal tube and flange assembly |
JPS5954516A (en) * | 1982-09-21 | 1984-03-29 | Fujimori Kogyo Kk | Bonding method for sheet |
FR2577164B1 (en) * | 1985-02-12 | 1987-05-29 | Flonic Sa | PROCESS FOR PRODUCING SYNTHETIC MEMBRANES FOR GAS METER AND GAS METER COMPRISING A MEMBRANE OBTAINED BY IMPLEMENTING SAID METHOD |
JPS6241525U (en) * | 1985-08-29 | 1987-03-12 | ||
JPH01134168A (en) * | 1987-11-18 | 1989-05-26 | Sanyo Electric Co Ltd | Refrigerator |
FR2656824B1 (en) * | 1990-01-10 | 1992-04-30 | Plastic Omnium Cie | METHOD OF ASSEMBLING PLASTIC PARTS AND PARTS INTENDED TO BE ASSEMBLED. |
FR2723028B1 (en) * | 1994-08-01 | 1996-10-18 | Lir France Sa | TWO-PART SYNTHETIC RESIN PART AND MANUFACTURING METHOD THEREOF |
DE10252976A1 (en) * | 2002-11-14 | 2004-05-27 | Nexans | Process for extruding a mixture |
CN201363474Y (en) * | 2009-02-20 | 2009-12-16 | 厦门科际精密器材有限公司 | Electromagnetic linear valve with improved structure |
DE102011089119B4 (en) * | 2011-12-20 | 2014-06-12 | Geze Gmbh | Valve for driving a door or a window or the like, and a method for joining the valve |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7147249U (en) * | 1972-05-18 | Vdo Schindling A Gmbh | Vacuum control | |
DE1086426B (en) * | 1955-09-09 | 1960-08-04 | Mannesmann Ag | Process for welding interlocking molded parts made of thermoplastic material |
FR1171383A (en) * | 1957-01-08 | 1959-01-26 | Assembly process of plastic sheets or elements and resulting new industrial product | |
NL6412575A (en) * | 1964-10-29 | 1966-05-02 | ||
US3277830A (en) * | 1964-11-02 | 1966-10-11 | Acf Ind Inc | Valved pump |
US3514299A (en) * | 1967-12-08 | 1970-05-26 | Pantasote Co Of New York Inc T | Packaging method |
US3963814A (en) * | 1970-02-06 | 1976-06-15 | Cebal Gp | Method for hermetically sealing a rigid panel |
FR2135058A1 (en) * | 1971-05-04 | 1972-12-15 | Aerospatiale | Partially transparent structures - of polycarbonate film over a lightweight abs frame |
JPS5218055B2 (en) * | 1972-07-31 | 1977-05-19 | ||
DE2502673B2 (en) * | 1975-01-23 | 1978-10-12 | A. Kayser Kg Industrietechnik, 3352 Einbeck | Vacuum control |
JPS5921772B2 (en) * | 1976-05-04 | 1984-05-22 | アイシン精機株式会社 | Ultrasonic welding method for two parts |
-
1977
- 1977-01-17 JP JP373377A patent/JPS5388883A/en active Granted
- 1977-12-30 AU AU32109/77A patent/AU509518B2/en not_active Expired
-
1978
- 1978-01-12 BE BE2056597A patent/BE862833A/en unknown
- 1978-01-16 DE DE19782801699 patent/DE2801699A1/en not_active Withdrawn
- 1978-01-16 BR BR7800238A patent/BR7800238A/en unknown
- 1978-01-16 GB GB1670/78A patent/GB1566531A/en not_active Expired
- 1978-01-17 NL NL7800553A patent/NL7800553A/en not_active Application Discontinuation
- 1978-01-17 FR FR7801228A patent/FR2377265A1/en active Pending
- 1978-01-17 IT IT7819311A patent/IT7819311A0/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120598A (en) * | 1982-05-24 | 1983-12-07 | Kangol Magnet Ltd | Encapsulating seat belt buckle |
GB2134847A (en) * | 1983-02-04 | 1984-08-22 | Standard Telephones Cables Ltd | Assembly using ultrasonics |
GB2253263A (en) * | 1991-03-01 | 1992-09-02 | Linemann Halflo Ltd | Non return valve |
GB2253263B (en) * | 1991-03-01 | 1994-06-15 | Linemann Halflo Ltd | Non-return valve assembly |
CN102052497B (en) * | 2009-10-29 | 2013-03-13 | 浙江三花制冷集团有限公司 | Manufacturing method of switching valve end cover, switching valve end cover and switching valve |
Also Published As
Publication number | Publication date |
---|---|
IT7819311A0 (en) | 1978-01-17 |
FR2377265A1 (en) | 1978-08-11 |
BR7800238A (en) | 1978-09-05 |
JPS5388883A (en) | 1978-08-04 |
DE2801699A1 (en) | 1978-07-20 |
NL7800553A (en) | 1978-07-19 |
BE862833A (en) | 1978-05-02 |
AU509518B2 (en) | 1980-05-15 |
AU3210977A (en) | 1979-07-19 |
JPS622973B2 (en) | 1987-01-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |