CN111958919B - Die for producing one-to-two connecting wires and connecting wire production method - Google Patents

Die for producing one-to-two connecting wires and connecting wire production method Download PDF

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Publication number
CN111958919B
CN111958919B CN202010753571.8A CN202010753571A CN111958919B CN 111958919 B CN111958919 B CN 111958919B CN 202010753571 A CN202010753571 A CN 202010753571A CN 111958919 B CN111958919 B CN 111958919B
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die
core strip
groove
mold
lower die
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CN111958919A (en
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丁柏明
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Quanzhou Senhe Electronic Co ltd
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Quanzhou Senhe Electronic Co ltd
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    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14549—Coating rod-like, wire-like or belt-like articles
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14549—Coating rod-like, wire-like or belt-like articles
    • B29C2045/14557—Coating rod-like, wire-like or belt-like articles coating spliced fibres or cables, e.g. optical fiber splices or junctions
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C2045/2683—Plurality of independent mould cavities in a single mould
    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables
    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/36—Plugs, connectors, or parts thereof

Abstract

The invention discloses a die for producing a one-to-two connecting wire and a connecting wire production method, belonging to the field of wire arrangement, and the die for producing the one-to-two connecting wire comprises an upper die and a lower die, wherein the middle part of the lower die is provided with a chute, a die core strip is connected in the chute in a sliding manner, and the bottom of the lower die is provided with a lifting assembly for controlling the lifting of the lower die; a groove is arranged at the position where the top surface of the die core strip is overlapped with the upper die, and the groove is lower than the upper side surface of the lower die; after the injection molding is finished, the lower die descends to enable the lower side face of the upper die to be abutted to the die core strip. Raw materials flow through the recess each other when moulding plastics for a plurality of also can guarantee better quality when moulding plastics together, mould plastics together and accomplish after the control bed die descends, make the bed die downside and mould core strip offset and accomplish the shearing, improve machining efficiency.

Description

Die for producing one-to-two connecting wires and connecting wire production method
Technical Field
The invention relates to the field of flat cables, in particular to a die for producing a one-to-two connecting wire and a connecting wire production method.
Background
The electronic connecting line is one of components connected with an electric circuit, mainly plays the roles of electric connection and signal transmission between devices and the components, between the components and a cabinet, between a system and a subsystem, and keeps the system and the system from signal distortion and energy loss change, the quality of the electronic connecting line is related to the reliability of the integral operation of system equipment, the electronic connecting line belongs to an important matching product of a host manufacturer, and the technical characteristics of the electronic connecting line are greatly influenced by the technical development of the downstream industry. A complete connector product typically goes through three processes of design, manufacture, and packaging/assembly. Sometimes, more than two ports are required to be connected to one output line, so when manufacturing such a connection line, it is necessary to connect the wires of the plurality of output terminals to the wire of one output terminal, and then seal the connection.
At present, when the connecting wire is manufactured, the influence of injection molding quality is considered, each connector position is generally subjected to injection molding by adopting a single closed molding die, only four or five connectors are generally processed at one time, and the processing efficiency is lower.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a die for producing one-to-two connecting wires and a connecting wire production method, which can process a row of connecting wires at one time, ensure the injection molding quality and greatly improve the processing efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a die for producing a one-to-two connecting wire, which comprises an upper die and a lower die, wherein a sliding groove is formed in the middle of the lower die, a die core strip is connected in the sliding groove in a sliding manner, and a lifting assembly for controlling the lifting of the lower die is arranged at the bottom of the lower die; a groove is arranged at the position where the top surface of the die core strip is overlapped with the upper die, and the groove is lower than the upper side surface of the lower die; after the injection molding is finished, the lower die descends to enable the lower side face of the upper die to be abutted to the die core strip.
The invention has the preferable technical scheme that the upper die, the lower die and the die core strip are provided with mutually matched die grooves, and when the die core strip is positioned at the bottom of the sliding groove, the die grooves in the die core strip are flush with the die grooves in the lower die.
The invention has the preferable technical scheme that a shearing table is arranged between two adjacent mould grooves in the mould core strip, the upper mould is provided with shearing ribs matched with the shearing table, and the shearing table is abutted against the shearing ribs when the upper mould is sunk into the grooves.
The invention has the preferable technical scheme that the top surface of the shearing table is an arc-shaped surface, and the edge part of the shearing table is higher than the middle part of the shearing table.
The invention has the preferable technical scheme that both sides of the sliding groove of the lower die are provided with partial depressed areas of the die groove, the top surface of the lower die is provided with a paying-off arc groove, and the paying-off arc groove is communicated with the die groove.
The invention has the preferable technical scheme that the lifting assembly comprises a fixed bracket and a hydraulic cylinder; the power output end of the hydraulic cylinder is fixed on the bottom surface of the lower die, a guide column is arranged on the bottom surface of the lower die, a sliding sleeve is arranged on the fixed support, and the guide column is in sliding connection with the sliding sleeve.
The invention has the preferable technical scheme that a guide rail is arranged on the bottom surface of one end of the die core strip, the guide rail is fixed on the fixed support, and the guide rail is connected with the die core strip in a sliding manner; the other end of the mould core strip is provided with a telescopic cylinder, the power output end of the telescopic cylinder is fixedly connected with the mould core strip, and the telescopic cylinder is fixed on the fixed support.
A production method of a die for producing a connecting wire by one-to-two connection comprises the following steps; s00: fixedly connecting the end parts of the leads, and sequentially placing the leads in the grooves of the die; s10: lifting the lower die to the top so that the die core strip is positioned at the bottom of the groove, and closing the upper die; s20: the upper die is used for injection molding in the groove of the die, raw materials flow mutually through a gap between the core strip of the die and the upper die during injection molding, and the thrust of the telescopic cylinder is continuously changed during injection molding; s30: after the injection molding is finished, the upper die is lifted, and meanwhile, the lower die also moves downwards, so that the die core strip ejects out the injection-molded connecting line; s40: and finally, moving the upper die towards the die core strip, so that the shearing table is abutted to the shearing ribs, and the connecting line is sheared into a single piece.
The invention has the beneficial effects that:
the invention provides a die for producing a one-to-two connecting wire, which comprises an upper die and a lower die, wherein a sliding groove is formed in the middle of the lower die, a die core strip is connected in the sliding groove in a sliding manner, and a lifting assembly for controlling the lifting of the lower die is arranged at the bottom of the lower die; a groove is arranged at the position where the top surface of the die core strip is overlapped with the upper die, and the groove is lower than the upper side surface of the lower die; after the injection molding is finished, the lower die descends to enable the lower side face of the upper die to be abutted to the die core strip. Raw materials flow through the recess each other when moulding plastics for a plurality of also can guarantee better quality when moulding plastics together, mould plastics together and accomplish after the control bed die descends, make the bed die downside and mould core strip offset and accomplish the shearing, improve machining efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a mold for producing a one-to-two connecting wire according to an embodiment of the present invention;
in the figure:
1. an upper die; 2. a lower die; 3. a mold core bar; 4. a mold recess; 5. a guide rail; 6. a lifting assembly; 7. a telescopic cylinder; 11. shearing ribs; 21. paying off the arc groove; 31. a groove; 32. a shearing table; 61. fixing a bracket; 62. a sliding sleeve; 63. a guide post; 64. and a hydraulic cylinder.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1, the embodiment provides a mold for producing a one-to-two connecting line, which includes an upper mold 1 and a lower mold 2, wherein a sliding groove is formed in the middle of the lower mold 2, a mold core strip 3 is slidably connected to the sliding groove, and a lifting assembly 6 for controlling the lifting of the lower mold 2 is arranged at the bottom of the lower mold; a groove 31 is formed in the position, where the top surface of the die core strip 3 coincides with the upper die 1, and the groove 31 is lower than the upper side surface of the lower die 2; after the injection molding is completed, the lower mold 2 descends to make the lower side surface of the upper mold 1 abut against the mold core strip 3. The arrangement of the groove 31 enables the injection molding raw material to flow aside through the groove 31 in the injection molding process, so that the injection molded product is not prone to generating the problems of bubble defects and the like. Meanwhile, connecting lines are connected into a row after injection molding, the lower die 2 is controlled to sink for a certain distance through the lifting assembly 6, the upper die 1 can be lowered to abut against the die core strip 3, connecting materials in the middle of the row of connecting lines are cut off, and the connecting lines are divided into single connecting lines. Make once only can produce a plurality of connecting wires through this mode, still be difficult for producing bubble defect scheduling problem simultaneously, very big improvement machining efficiency.
Preferably, the upper die 1, the lower die 2 and the die core strip 3 are provided with mutually matched die grooves 4, and the die core strip 3 is located at the bottom of the sliding groove, the die grooves 4 in the die core strip 3 are flush with the die grooves 4 in the lower die 2. When the mold core strip 3 is positioned at the bottom of the sliding groove, the injection molding can ensure better injection molding quality. The mould groove 4 is provided with half the volume on the upper mould 1.
Preferably, a shearing table 32 is arranged between two adjacent mold grooves 4 in the mold core strip 3, the upper mold 1 is provided with shearing ribs 11 matched with the shearing table 32, and when the upper mold 1 sinks into the grooves 31, the shearing table 32 abuts against the shearing ribs 11. After the lower die 2 has been lowered, the upper die 1 can be lowered a further distance so that the cutting table 32 can be brought against the cutting rib 11, thereby shearing off the connecting portion in the middle of the connecting line and thus cutting off the individual connecting lines. Further, the top surface of the shearing table 32 is an arc-shaped surface, and the edge part of the shearing table 32 is higher than the middle part of the shearing table 32. So that the edge positions are pressed against the shearing ribs 11, whereby the connecting portion can be cut off well.
Preferably, both sides of the sliding groove of the lower die 2 are provided with partial depressed areas of the die groove 4, the top surface of the lower die 2 is provided with a wire releasing arc groove 21, and the wire releasing arc groove 21 is communicated with the die groove 4. The lower mold 2 is also provided with a mold groove 4 at the edge of the runner so that the tie line can be well controlled at the center position at the time of injection molding.
Preferably, the lifting assembly 6 comprises a fixed bracket 61, a hydraulic cylinder 64; the power output end of the hydraulic cylinder 64 is fixed on the bottom surface of the lower die 2, the bottom surface of the lower die 2 is provided with a guide post 63, the fixed support 61 is provided with a sliding sleeve 62, and the guide post 63 is in sliding connection with the sliding sleeve 62. The lifting of the lower mold 2 can be stably controlled by the hydraulic cylinder 64 and the guide post 63.
Preferably, a guide rail 5 is arranged on the bottom surface of one end of the mold core strip 3, the guide rail 5 is fixed on the fixed bracket 61, and the guide rail 5 is connected with the mold core strip 3 in a sliding manner; the other end of mould core strip 3 is provided with telescopic cylinder 7, telescopic cylinder 7's power take off end with mould core strip 3 fixed connection, telescopic cylinder 7 is fixed in on the fixed bolster 61. Guide rail 5 can play the effect of supporting mould core strip 3, and telescopic cylinder 7 can control mould core strip 3 and slide along guide rail 5 simultaneously, and the one end that mould core strip 3 is connected with telescopic cylinder 7 is provided with the stopper for when telescopic cylinder 7 promoted mould core strip 3, the stopper supports the tip of bed die 2, and mould recess 4 in the mould core strip 3 just aligns with mould recess 4 of bed die 2 this moment. When moulding plastics, constantly change telescopic cylinder 7's atmospheric pressure size simultaneously for telescopic cylinder 7 produces certain vibrations to mould core strip 3, makes to be more difficult to produce the bubble when moulding plastics. Meanwhile, by pushing the mold core bar 3 to move, injection molding residues between the gap between the mold core bar 3 and the lower mold 2 can be removed.
A production method of a die for producing a connecting wire by one-to-two connection comprises the following steps; s00: fixedly connecting the end parts of the leads, and sequentially placing the leads in the groove 4 of the mold; s10: raising the lower mold 2 to the top so that the mold core bar 3 is located at the bottom of the groove 31, and closing the upper mold 1; s20: the injection molding is carried out on the mold groove 4 through the upper mold 1, raw materials flow through a gap between the mold core strip 3 and the upper mold 1 during the injection molding, and the thrust of the telescopic cylinder 7 is continuously changed during the injection molding; s30: after the injection molding is finished, the upper die 1 is lifted, and meanwhile, the lower die 2 also moves downwards, so that the die core strip 3 ejects out the injection-molded connecting line; s40: finally, the upper die 1 is moved toward the die core bar 3, so that the shearing table 32 abuts against the shearing ribs 11, and the connecting lines are sheared into single pieces. According to the processing method, the connecting lines are processed side by side and are finally divided into single connecting lines, so that sufficient flowing space of injection molding raw materials is ensured during injection molding, and the injection molding quality is high.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (5)

1. The utility model provides a mould of one drags two connecting wire productions usefulness which characterized in that:
the device comprises an upper die (1) and a lower die (2), wherein a sliding groove is formed in the middle of the lower die (2), a die core strip (3) is connected in the sliding groove in a sliding manner, and a lifting assembly (6) for controlling the lifting of the lower die (2) is arranged at the bottom of the lower die; a groove (31) is formed in the position, where the top surface of the die core strip (3) is overlapped with the upper die (1), and the groove (31) is lower than the upper side surface of the lower die (2); after the injection molding is finished, the lower mold (2) descends to enable the lower side surface of the upper mold (1) to be abutted against the mold core strip (3);
the upper die (1), the lower die (2) and the die core strip (3) are provided with mutually matched die grooves (4), and when the die core strip (3) is positioned at the bottom of the sliding groove, the die grooves (4) in the die core strip (3) are flush with the die grooves (4) in the lower die (2);
a shearing table (32) is arranged between two adjacent mould grooves (4) in the mould core strip (3), the upper mould (1) is provided with shearing ribs (11) matched with the shearing table (32), and when the upper mould (1) sinks into the grooves (31), the shearing table (32) is abutted to the shearing ribs (11);
the lifting assembly (6) comprises a fixed support (61), a guide rail (5) is arranged on the bottom surface of one end of the die core strip (3), the guide rail (5) is fixed on the fixed support (61), and the guide rail (5) is connected with the die core strip (3) in a sliding manner;
the other end of mould core strip (3) is provided with telescopic cylinder (7), telescopic cylinder (7) the power take off end with mould core strip (3) fixed connection, telescopic cylinder (7) are fixed in on fixed bolster (61).
2. The mold for producing one-driving-two connecting wires according to claim 1, wherein:
the top surface of the shearing table (32) is an arc-shaped surface, and the edge part of the shearing table (32) is higher than the middle part of the shearing table (32).
3. The mold for producing one-driving-two connecting wires according to claim 1, wherein:
the two sides of the sliding groove of the lower die (2) are provided with partial depressed areas of the die groove (4), the top surface of the lower die (2) is provided with a paying-off arc groove (21), and the paying-off arc groove (21) is communicated with the die groove (4).
4. The mold for producing one-driving-two connecting wires according to claim 1, wherein:
the lifting assembly (6) further comprises a hydraulic cylinder (64);
the power output end of the hydraulic cylinder (64) is fixed on the bottom surface of the lower die (2), a guide post (63) is arranged on the bottom surface of the lower die (2), a sliding sleeve (62) is arranged on the fixing support (61), and the guide post (63) is connected with the sliding sleeve (62) in a sliding mode.
5. A method of manufacturing a die for manufacturing a one-to-two connection line according to claim 1, comprising:
comprises the following steps; s00: fixedly connecting the end parts of the leads, and sequentially placing the leads in the groove (4) of the die;
s10: lifting the lower die (2) to the top so that the die core strip (3) is positioned at the bottom of the groove (31), and closing the upper die (1);
s20: the injection molding is carried out on the mold groove (4) through the upper mold (1), raw materials flow through a gap between the mold core strip (3) and the upper mold (1) during injection molding, and the thrust of the telescopic cylinder (7) is changed continuously during injection molding;
s30: after the injection molding is finished, the upper mold (1) is lifted, and meanwhile, the lower mold (2) also moves downwards, so that the mold core strip (3) ejects out the injection molded connecting line;
s40: and finally, moving the upper die (1) towards the die core strip (3) to enable the shearing table (32) to be abutted against the shearing ribs (11) so as to shear the connecting lines into single parts.
CN202010753571.8A 2020-07-30 2020-07-30 Die for producing one-to-two connecting wires and connecting wire production method Active CN111958919B (en)

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