CN106182647B - Die with single screw controlled multi-cavity de-threading mechanism - Google Patents

Die with single screw controlled multi-cavity de-threading mechanism Download PDF

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Publication number
CN106182647B
CN106182647B CN201610759800.0A CN201610759800A CN106182647B CN 106182647 B CN106182647 B CN 106182647B CN 201610759800 A CN201610759800 A CN 201610759800A CN 106182647 B CN106182647 B CN 106182647B
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mold
contact
bearing
plate
gear
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CN106182647A (en
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王强
葛敬科
宫舰
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Dalian Luanyi Precision Technology Co ltd
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DALIAN LUANYI PRECISION MOULD MANUFACTURING 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded 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
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Mold equipped with single screw rod control multi-cavity Leave out thread mechanism, belong to thermoplastic plastics shaping mould applications, the mold controls multi-cavity Leave out thread mechanism by single screw rod and solves the problems, such as the mold of micron order threaded plastic product, driving reflex screw motion is moved by injection moulding machine mould open to drive gear drive, gear band movable gear shaft is rotated product break away from moulds, realize plastic automatic demoulding, it is big to transmit power, stable working is reliable, it can be quick, it is accurately positioned, it demoulds product smoothly and reaches technical requirements and requirement, efficiently use die space, structure is simple, it is compact, improve production efficiency.

Description

Mold equipped with single screw rod control multi-cavity Leave out thread mechanism
Technical field
The invention belongs to thermoplastic plastics shaping mould applications, it is related to being equipped with the mould of single screw rod control multi-cavity Leave out thread mechanism Tool, is mainly used in the molding die of micron order threaded plastic product, is applied especially to the micron order threaded plastic of a multi-cavity mold The molding die of product.
Background technique
Screwed plastic product is widely used in daily life and production, the threaded plastic low for required precision Product generally realizes injection molding using the mold of strong release mechanism, and threaded plastic product higher for precision is generally using de- The mold of thread mechanism realizes injection molding, and the power of Leave out thread usually selects motor driven, Driven by Hydraulic Cylinder and external connection Dynamic mechanism controls internal gear rotation is to realize Leave out thread, and structure occupancy die space is big, and structure is complicated, higher cost.
Summary of the invention
The object of the present invention is to provide the molds for being equipped with single screw rod control multi-cavity Leave out thread mechanism, by die sinking action drives For reflex screw motion to drive gear drive, product break away from moulds is realized that plastic takes off automatically by the rotation of gear band movable gear shaft Mould.
The technical problem to be solved in the present invention is to provide the molds for being equipped with single screw rod control multi-cavity Leave out thread mechanism, solve essence It the problem of mold of level of confidentiality threaded plastic product, demoulds product smoothly and reaches technical requirements and requirement.
The technical scheme is that being equipped with the mold of single screw rod control multi-cavity Leave out thread mechanism, structure includes: cover half Bottom plate 1, solid plate 2, moving template 3, dynamic model supporting plate 4, face needle plate 5, bottom needle plate 6, moving clamping plate 7, reflex screw rod 8, thrust bearing A9, bearing A10, reflex swivel nut 11, driving gear 12, limit plate 13, bearing B14, thrust bearing B15, bearing C16, driven tooth Take turns A17, driven gear B18, bearings D 19, inclined wedge 20, moving die insert 21, slider guide column 22, sliding block 23, pin 24, gear shaft 25, it moves back tooth axle sleeve 26, positioning sleeve 27, middle shoulder push rod 28, spring A29, shouldered tap bolt 30, release link spring 31, reset control machine Structure 32 and key pin 33；
The connection relationship of mold equipped with single screw rod control multi-cavity Leave out thread mechanism are as follows: reflex screw rod 8 connects with 2 face of solid plate Hanging platform connection is touched, reflex screw rod 8 and 1 face contact of fixed clamping plate simultaneously limit, and thrust bearing A9 is slided with 8 face contact of reflex screw rod to be matched It closes, thrust bearing A9 is slidably matched with 11 face contact of reflex swivel nut, and bearing A10 is slidably matched with 11 face contact of reflex swivel nut, comes Multiple swivel nut 11 is threadedly coupled with reflex screw rod 8, and driving gear 12 is fitted close with 11 face contact of reflex swivel nut and is connect by key pin 33, Bearing B14 is slidably matched with 11 face contact of reflex swivel nut, and thrust bearing B15 is slidably matched with 8 face contact of reflex screw rod, thrust shaft It holds B15 to be slidably matched with 11 face contact of reflex swivel nut, the top surface of thrust bearing A9 and bearing C16 and 3 face contact of moving template, thrust The bottom surface and 13 face of limit plate of the periphery of bearing A9 and bearing C16 and 3 clearance fit of moving template, bearing B14 and thrust bearing B15 Contact, the periphery of bearing B14 and thrust bearing B15 and 13 clearance fit of limit plate, the periphery of limit plate 13 and moving template 3 and The bottom surface of 4 clearance fit of dynamic model supporting plate, limit plate 13 is locked with 4 face contact of dynamic model supporting plate by bolt, moving die insert 21 Periphery and 2 clearance fit of solid plate, the top surface of moving die insert 21 and 2 face contact of solid plate, moving die insert 21 connect with dynamic model plate face Touching is fitted close and is locked by bolt, and top surface and 21 face contact of moving die insert of bearing C16 is slidably matched, and bearing C16's is outer Week and 21 clearance fit of moving die insert, driven gear A17 are slidably matched with bearing C16 face contact, are arranged on driven gear A17 Position be arranged on flat and driven gear B18 is fitted close and limits fixation with flat through slot face contact, the bottom surface of bearings D 19 with move 3 face contact of template is slidably matched, the periphery of bearings D 19 and 3 clearance fit of moving template, bearings D 19 and driven gear A17 face contact It is slidably matched, inclined wedge 20 is fitted close with 2 face contact of solid plate and is locked by bolt, the frustum being arranged on slider guide column 22 It is slidably matched with the long cave face contact of taper being arranged on sliding block 23, slider guide column 22 is connected with 5 clearance fit of face needle plate by hanging platform It connects, the perforation side cave face contact being arranged on the periphery of sliding block 23 and moving die insert 21 is slidably matched, the inclined-plane being arranged on sliding block 23 Cooperate with the inclined-plane face contact wedging being arranged on inclined wedge 20, gear shaft 25 is matched with sliding block 23 and the sliding of 21 face contact of moving die insert It closes, gear shaft 25 is threadedly coupled with 26 face contact of tooth axle sleeve is moved back, and moves back tooth axle sleeve 26 and 3 face contact of moving template is fitted close by bolt It is locked, positioning sleeve 27 and gear shaft 25 and moves back 26 face contact of tooth axle sleeve, positioning sleeve 27 is closely matched with 4 face contact of dynamic model supporting plate Conjunction is locked by bolt, and pin 24 and 21 face contact of moving die insert are fitted close, and pin 24 is with 23 face contact of sliding block and to it Limit, middle shoulder push rod 28 are fitted close with 25 face contact of gear shaft, middle shoulder push rod 28 and positioning sleeve 27, dynamic model supporting plate 4, face needle plate 5 and 6 clearance fit of bottom needle plate, the middle shoulder hanging platform being arranged on middle shoulder push rod 28 and 5 face contact of face needle plate simultaneously limit, middle shoulder push rod 28 The counterbore clearance fit being arranged on the middle shoulder hanging platform and bottom needle plate 6 of upper setting, the top surface of spring A29 and 3 face contact of moving template, bullet The bottom surface of spring A29 and 4 face contact of dynamic model supporting plate, the periphery of spring A29 and 4 clearance fit of dynamic model supporting plate, shouldered tap bolt 30 and bullet Spring A29,6 clearance fit of dynamic model supporting plate, face needle plate 5 and bottom needle plate, shouldered tap bolt 30 are threadedly coupled with moving template 3, release link bullet The top surface of spring 31 and 3 face contact of moving template, the bottom surface of release link spring 31 and 5 face contact of face needle plate, release link spring 31 it is outer Week and 4 clearance fit of dynamic model supporting plate reset the outside that control mechanism 32 is mounted on moving template 3 and dynamic model supporting plate 4；The driving tooth Wheel 12 is engaged with driven gear A17, and driven gear B18 is engaged with gear shaft 25, when mold cavity is greater than two, driving gear 12 It can be engaged simultaneously with the driven gear A17 greater than two, driven gear B18 can be nibbled with the gear shaft 25 greater than two simultaneously It closes, each gear shaft 25 forms a screw product.
The reflex screw rod 8 moves in a straight line under the drive of solid plate 2 when being opened, while reflex screw rod 8 drives reflex Swivel nut 11 is made rotating motion with central axis, while the power of rotation is passed to driving gear 12 by key pin 33 and promoted by reflex swivel nut 11 Driving gear 12 is set to make rotating motion with central axis, while the thrust of rotation is passed to driven tooth by teeth by driving gear 12 A17 is taken turns, while the thrust of rotation is passed to driven gear B18, while driven tooth by positioning flat effect by driven gear A17 The thrust of rotation is passed to gear shaft 25 by teeth by wheel B18, while gear shaft 25 is transmitted the thrust of rotation by screw thread It is the opposing stationary components being fixed on moving template 3 due to moving back tooth axle sleeve 26, while moving back tooth axle sleeve 26 to tooth axle sleeve 26 is moved back 25 reaction force of gear shaft is applied to by screw thread gear shaft 25 is promoted to do rollback Leave out thread along helix move.
The moving template 3 separates under the action of spring A29 with dynamic model supporting plate 4 when being opened, and positioning sleeve 27 is in company with dynamic model support Plate 4 is separated with gear shaft 25, and the distance between the hanging platform top surface of the shouldered tap bolt 30 and dynamic model supporting plate 4 are greater than gear shaft 25 and do Helix does the distance to retract when the movement of rollback Leave out thread.
Sliding block 23 is pushed to do die sinking movement while the slider guide column 22 is moved with coplanar needle plate 5, the middle shoulder pushes away Bar 28 when the bottom surface of 6 counterbore of bottom needle plate and the bottom surface of shoulder hanging platform in middle shoulder push rod 28 contact in shoulder push rod 28 do ejection movement, The ejection motion delay is opened in sliding block 23 and moves.
Described to move back 26 material selection spring steel material of tooth axle sleeve, the 27 material selection quenched materials hardness of positioning sleeve guarantees HRC50-85 degree.
After the reset control mechanism 32 controls solid plate 2 and the molding of moving template 3, template 3 and dynamic model supporting plate 4 close again Mould.
The flight pitch of shaped article thread profile is identical as the flight pitch moved back on tooth axle sleeve 26 on the gear shaft 25.
The beneficial effects of the present invention are: controlling multi-cavity Leave out thread mechanism by single screw rod solves the production of micron order threaded plastic The problem of mold of product, moves driving reflex screw motion by injection moulding machine mould open to drive gear drive, gear Product break away from moulds is realized plastic automatic demoulding by the rotation of band movable gear shaft, and transmitting power is big, stable working is reliable, can be fast Speed is accurately positioned, and is demoulded product smoothly and is reached technical requirements and requirement, efficiently uses die space, structure is simple, It is compact, improve production efficiency.
Detailed description of the invention
Below in conjunction with attached drawing, illustrated with embodiment.
Fig. 1 is single screw rod control multi-cavity Leave out thread mechanism stereoscopic schematic diagram.
Fig. 2 is provided with the schematic diagram one of the mold of single screw rod control multi-cavity Leave out thread mechanism.
Fig. 3 is provided with the schematic diagram two of the mold of single screw rod control multi-cavity Leave out thread mechanism.
Fig. 4 is single screw rod control multi-cavity Leave out thread mechanism perspective cross-sectional schematic diagram one.
Fig. 5 is single screw rod control multi-cavity Leave out thread mechanism perspective cross-sectional schematic diagram two.
Fig. 6 is bearing C16 and driven gear A17 cooperation schematic diagram.
Fig. 7 is gear shaft 25, moves back tooth axle sleeve 26 and the cooperation schematic diagram of positioning sleeve 27.
In figure: 1 fixed clamping plate；2 solid plates；3 moving templates；4 dynamic model supporting plates；5 face needle plates；6 bottom needle plates；7 moving clamping plates；8 Reflex screw rod；9 thrust bearing A；10 bearing A；11 reflex swivel nuts 11；12 moving gears 12；13 plates；14 bearing B；15 thrust bearings B；16 bearing C；17 driven gear A；18 driven gear B；19 bearings Ds；20 inclined wedges；21 moving die inserts；22 slider guide columns；23 is sliding Block；24 pins；25 gear shafts；26 move back tooth axle sleeve；27 positioning sleeves；Shoulder push rod in 28；29 spring A；30 shouldered tap bolts；31 release links Spring；32 reset control mechanism；33 key pins.
Specific embodiment
Describe the specific embodiment of invention in detail below with reference to technology text and attached drawing.
When assembling die, it is intracavitary that inclined wedge 20 is fitted into the type that solid plate 2 processes, and bolt passes through solid plate 2 for inclined wedge 20 It is locked with it, gear shaft 25 is threadedly coupled (see figure 7) with tooth axle sleeve 26 is moved back, and gear shaft 25 is used as one with tooth axle sleeve 26 is moved back In the cavity that whole assembly such as moving template 4 processes, bolt, which passes through, to move back tooth axle sleeve 26 it is locked with moving template 4, reflex It is intracavitary that swivel nut 11 is mounted on the type that solid plate 2 processes, and reflex swivel nut 11 and driving gear 12 are assembled by the positioning of key pin 33, axis It holds A10 and bearing B14 to be set in together with reflex swivel nut 11, it is intracavitary that thrust bearing A9 is mounted on the type that moving template 4 processes, and comes It is intracavitary that multiple swivel nut 11, driving gear 12, bearing A10 and bearing B14 are mounted on the type that moving template 4 processes as a whole, Thrust bearing B15 is mounted on that the type that limit plate 13 processes is intracavitary, and thrust bearing B15 and limit plate 13 are equipped with as a whole Intracavitary in the type that moving template 4 processes, bolt passes through limit plate 13 and it is locked with moving template 4 (see figure 2), driven tooth Wheel A17 and driven gear B18 is equipped, bearing C16 and the equipped (see figure 6) of bearings D 19 and driven gear A17, driven gear A17, Driven gear B18, bearing C16 and bearings D 19 are fitted in that the type that moving template 4 processes is intracavitary, and pin 24 is pacified as a whole In the pin hole that moving die insert 21 processes, it is intracavitary that moving die insert 21 is fitted in the type that moving template processes, and bolt passes through dynamic It is locked by mould insert 21 with dynamic model supporting plate 4, and sliding block 23 is mounted in the cavity that moving die insert 21 processes and in pin 24 contact (see figure 5)s, slider guide column 22 and middle shoulder push rod 28 are equipped with hanging platform limit with face needle plate 5, and positioning sleeve 27 is mounted on dynamic The type that die shoe plate 4 processes is intracavitary, and bolt passes through dynamic model supporting plate 4 and positioning sleeve 27 is locked on dynamic model supporting plate 4, spring It is intracavitary that A29 is mounted on the type that dynamic model supporting plate 4 processes, and shouldered tap bolt 30 passes through dynamic model supporting plate 4 and is locked with moving template 3, conjunction Reflex screw rod 8 is inserted into reflex swivel nut 11 and pushes reflex swivel nut 11 by mold clamping (see Fig. 2,4) when mould, resets control mechanism 32 It is mounted on the outside (see figure 3) of moving template 3 and dynamic model supporting plate 4.
Specific forming process is: after the completion of molding machine injection, moving template 3 divides with dynamic model supporting plate 4 under spring A29 effect From reflex screw rod 8 moves in a straight line under the drive of solid plate 2, and the drive reflex swivel nut 11 of reflex screw rod 8 is done with central axis to be rotated Movement, the power of rotation by key pin 33 is passed to driving gear 12 driving gear 12 is promoted to be done with central axis by reflex swivel nut 11 revolves Transhipment is dynamic, and the thrust of rotation is passed to driven gear A17 by teeth by driving gear 12, and driven gear A17 is flat by positioning Effect the thrust of rotation is passed into driven gear B18, the thrust of rotation is passed to gear by teeth by driven gear B18 The thrust of rotation is passed to by screw thread and moves back tooth axle sleeve 26 by axis 25, gear shaft 25, is to be fixed on dynamic model due to moving back tooth axle sleeve 26 Opposing stationary components on plate 3, while moving back tooth axle sleeve 26 25 reaction force of gear shaft is applied to by screw thread and promoting gear Axis 25 does rollback Leave out thread along helix and moves, and control mechanism 32 is resetted when molding and controls solid plate 2 and 3 molding of moving template Afterwards, template 3 and dynamic model supporting plate mold the completion of one-pass molding period again.
The above is superior embodiment of the invention, it is noted that for the technology of the technical field of the invention For personnel, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improve and become Shape also should be regarded as protection scope of the present invention.

Claims (7)

1.设有单螺杆控制多腔脱螺纹机构的模具，其特征在于其结构包括：定模底板（1）、定模板（2）、动模板（3）、动模托板（4）、面针板（5）、底针板（6）、动模底板（7）、来复螺杆（8）、止推轴承A（9）、轴承A（10）、来复螺套（11）、主动齿轮（12）、限位板（13）、轴承B（14）、止推轴承B（15）、轴承C（16）、从动齿轮A（17）、从动齿轮B（18）、轴承D（19）、斜楔（20）、动模镶块（21）、滑块导向柱（22）、滑块（23）、销钉（24）、齿轮轴（25）、退牙轴套（26）、定位套（27）、中肩推杆（28）、弹簧A（29）、带肩螺栓（30）、复位杆弹簧（31）、复位控制机构（32）和键销（33）；其连接关系为：来复螺杆（8）与定模板（2）面接触挂台连接，止推轴承A（9）与来复螺杆（8）面接触滑动配合，止推轴承A（9）与来复螺套（11）面接触滑动配合，轴承A（10）与来复螺套（11）面接触滑动配合，来复螺套（11）与来复螺杆（8）螺纹连接，主动齿轮（12）与来复螺套（11）面接触紧密配合由键销（33）连接，轴承B（14）与来复螺套（11）面接触滑动配合，止推轴承B（15）与来复螺杆（8）面接触滑动配合，止推轴承B（15）与来复螺套（11）面接触滑动配合，止推轴承A（9）和轴承C（16）的顶面与动模板（3）面接触，止推轴承A（9）和轴承C（16）的外周与动模板（3）间隙配合，轴承B（14）和止推轴承B（15）的底面与限位板13面接触，轴承B（14）和止推轴承B（15）的外周与限位板（13）间隙配合，轴承C（16）的顶面与动模镶块（21）面接触滑动配合，轴承C（16）的外周与动模镶块（21）间隙配合，从动齿轮A（17）与轴承C（16）面接触滑动配合，从动齿轮A（17）上设置的定位扁和从动齿轮B（18）上设置的带扁通槽面接触紧密配合并限位固定，轴承D（19）的底面与动模板3面接触滑动配合，轴承D（19）的外周与动模板3间隙配合，轴承D（19）与从动齿轮A（17）面接触滑动配合，斜楔（20）与定模板（2）面接触紧密配合由螺栓锁紧固定，滑块导向柱（22）上设置的锥台与滑块（23）上设置的锥形长穴面接触滑动配合，滑块导向柱（22）与面针板（5）间隙配合由挂台连接，滑块（23）的外周与动模镶块（21）上设置的贯通方穴面接触滑动配合，齿轮轴（25）与滑块（23）和动模镶块（21）面接触滑动配合，齿轮轴（25）与退牙轴套（26）面接触螺纹连接，退牙轴套（26）与动模板（3）面接触紧密配合由螺栓锁紧固定，定位套（27）与齿轮轴（25）和退牙轴套（26）面接触，定位套（27）与动模托板（4）面接触紧密配合由螺栓锁紧固定，销钉（24）与动模镶块（21）面接触紧密配合，销钉（24）与滑块（23）面接触并对其限位，中肩推杆（28）与齿轮轴（25）面接触紧密配合，中肩推杆（28）上设置的中肩挂台与面针板（5）面接触并限位，中肩推杆（28）上设置的中肩挂台与底针板（6）上设置的沉孔间隙配合，复位控制机构（32）安装在动模板（3）和动模托板（4）的外侧；所述主动齿轮（12）与从动齿轮A（17）啮合，从动齿轮B（18）与齿轮轴（25）啮合，模具型腔大于两个时，主动齿轮（12）可以同时与大于两个的从动齿轮A（17）啮合，从动齿轮B（18）可以同时与大于两个的齿轮轴（25）啮合，每个齿轮轴（25）成型一个螺纹产品。1. A mold with a single screw-controlled multi-cavity de-threading mechanism, characterized in that its structure includes: a fixed mold base plate (1), a fixed mold plate (2), a movable mold plate (3), a movable mold support plate (4), a surface needle Plate (5), bottom needle plate (6), movable die bottom plate (7), reciprocating screw (8), thrust bearing A (9), bearing A (10), reciprocating screw sleeve (11), driving gear (12), limit plate (13), bearing B (14), thrust bearing B (15), bearing C (16), driven gear A (17), driven gear B (18), bearing D ( 19), wedge (20), movable die insert (21), slider guide column (22), slider (23), pin (24), gear shaft (25), tooth retraction sleeve (26), Positioning sleeve (27), shoulder push rod (28), spring A (29), shoulder bolt (30), reset lever spring (31), reset control mechanism (32) and key pin (33); their connection relationship It is: the reciprocating screw (8) is connected to the fixed platen (2) in contact with the hanging platform, the thrust bearing A (9) is in contact with the reciprocating screw (8), and the thrust bearing A (9) is in contact with the reciprocating screw (8). The sleeve (11) is in contact and sliding fit, and the bearing A (10) is in contact and sliding fit with the reciprocating screw sleeve (11). The reciprocating screw sleeve (11) is in close contact with the surface and is connected by the key pin (33), the bearing B (14) is in contact and sliding fit with the reciprocating screw sleeve (11), and the thrust bearing B (15) is connected with the reciprocating screw (8). ) surface contact sliding fit, the thrust bearing B (15) and the double screw sleeve (11) surface contact sliding fit, the top surface of the thrust bearing A (9) and the bearing C (16) and the movable template (3) surface contact , the outer circumference of thrust bearing A (9) and bearing C (16) are in clearance fit with the movable template (3), the bottom surfaces of bearing B (14) and thrust bearing B (15) are in contact with the limit plate 13, and the bearing B (14) and the outer circumference of the thrust bearing B (15) are in clearance fit with the limit plate (13). The outer circumference is in clearance fit with the movable die insert (21), the driven gear A (17) is in contact and sliding fit with the bearing C (16), and the positioning flat on the driven gear A (17) and the driven gear B (18) The surface with flat through grooves provided on the top is in close contact and is limited and fixed. The bottom surface of bearing D (19) is in contact and sliding fit with the surface of movable template 3, and the outer circumference of bearing D (19) is in clearance fit with movable template 3. Bearing D (19) ) is in contact and sliding fit with the driven gear A (17), the wedge (20) is in close contact with the fixed plate (2), and is locked and fixed by bolts. The tapered long hole surface set on (23) is in contact and sliding fit, the slider guide column (22) and the face needle plate (5) are connected by the hanging table in clearance fit, and the outer periphery of the slider (23) is connected with the movable die insert (21). The through-hole square hole set on the 21) Surface-contact sliding fit, the gear shaft (25) and the tooth-retracting bushing (26) are in contact and threaded connection, the tooth-retracting bushing (26) and the moving template (3) are in close contact with the surface and are locked and fixed by bolts, and the positioning sleeve (27) is in contact with the gear shaft (25) and the tooth-retracting sleeve (26), the positioning sleeve (27) is in close contact with the surface of the movable mold plate (4), and is locked and fixed by bolts, and the pin (24) is connected to the movable mold. The insert (21) is in close contact with the surface, the pin (24) is in contact with the slider (23) and it is limited, the shoulder push rod (28) is in close contact with the gear shaft (25), and the shoulder push rod (25) is in close contact with the surface. The middle shoulder hanging table set on (28) is in contact with the surface of the upper needle plate (5) and is limited, the middle shoulder hanging table set on the middle shoulder push rod (28) and the counterbore gap set on the bottom needle plate (6) In cooperation, the reset control mechanism (32) is installed on the outer side of the movable die plate (3) and the movable die support plate (4); the driving gear (12) meshes with the driven gear A (17), and the driven gear B (18) Meshing with the gear shaft (25), when there are more than two mold cavities, the driving gear (12) can mesh with more than two driven gears A (17) at the same time, and the driven gear B (18) can simultaneously mesh with more than two driven gears A (17). The gear shafts (25) are meshed with each other, and each gear shaft (25) is formed with a threaded product. 2.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述来复螺杆（8）开模时在定模板（2）的带动下做直线运动，同时来复螺杆（8）带动来复螺套（11）以中心轴做旋转运动，同时来复螺套（11）通过键销（33）将转动的力传递给主动齿轮（12）促使主动齿轮（12）以中心轴做旋转运动，同时主动齿轮（12）通过齿牙将转动的推力传递给从动齿轮A（17），同时从动齿轮A（17）通过定位扁的作用将转动的推力传递给从动齿轮B（18），同时从动齿轮B（18）通过齿牙将转动的推力传递给齿轮轴（25），同时齿轮轴（25）通过螺纹将转动的推力传递给退牙轴套（26），由于退牙轴套（26）是固定在动模板（3）上的相对静止的零部件，同时退牙轴套（26）通过螺纹施加给齿轮轴（25）反作用力促使齿轮轴（25）沿螺旋线做回退脱螺纹运动。2. The mold with a single-screw-controlled multi-cavity de-threading mechanism according to claim 1, characterized in that: when the reciprocating screw (8) opens the mold, it moves in a straight line under the driving of the fixed plate (2), and at the same time The reciprocating screw (8) drives the reciprocating screw sleeve (11) to rotate with the central axis, and at the same time, the reciprocating screw sleeve (11) transmits the rotational force to the driving gear (12) through the key pin (33) to urge the driving gear (11). 12) Rotate with the central axis, and at the same time, the driving gear (12) transmits the rotating thrust to the driven gear A (17) through the teeth, and the driven gear A (17) transmits the rotating thrust through the action of the positioning flat. To the driven gear B (18), at the same time, the driven gear B (18) transmits the rotational thrust to the gear shaft (25) through the teeth, and at the same time the gear shaft (25) transmits the rotational thrust to the retraction bushing through the thread (26), since the retraction sleeve (26) is a relatively static part fixed on the movable template (3), and the retraction sleeve (26) exerts a reaction force on the gear shaft (25) through the thread to promote the gear shaft. (25) Do a retraction and unthreading motion along the helical line. 3.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述动模板（3）开模时在弹簧A（29）的作用下与动模托板（4）分离，定位套（27）随同动模托板（4）与齿轮轴（25）分离，所述带肩螺栓（30）的挂台顶面与动模托板（4）之间的距离大于齿轮轴（25）做螺旋线做回退脱螺纹运动时回退的距离。3. The mold with a single-screw-controlled multi-cavity de-threading mechanism according to claim 1, characterized in that: when the movable die plate (3) is opened, it is in contact with the movable die plate (3) under the action of the spring A (29). 4) Separation, the positioning sleeve (27) is separated from the gear shaft (25) along with the movable mold support plate (4), and the distance between the top surface of the hanging table of the shoulder bolt (30) and the movable mold support plate (4) It is greater than the retracting distance when the gear shaft (25) is used for the retraction and unthreading movement of the helical line. 4.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述滑块导向柱（22）随同面针板（5）运动的同时推动滑块（23）做开模运动，所述中肩推杆（28）在底针板（6）沉孔的底面与中肩推杆（28）中肩挂台的底面接触时中肩推杆（28）做顶出运动，该顶出运动延迟于滑块（23）开模运动。4. The mold with a single-screw-controlled multi-cavity de-threading mechanism according to claim 1, wherein the slider guide column (22) moves with the needle plate (5) and pushes the slider (23) at the same time The mold opening movement is performed, and the middle shoulder push rod (28) pushes the middle shoulder push rod (28) when the bottom surface of the counterbore of the bottom needle plate (6) contacts the bottom surface of the middle shoulder push rod (28) and the middle shoulder hanging table. The ejection movement is delayed from the mold opening movement of the slider (23). 5.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述退牙轴套（26）材质选用弹簧钢材料，所述定位套（27）材质选用淬火材料硬度保证HRC50-85度。5. The mold with a single-screw-controlled multi-cavity de-threading mechanism according to claim 1, characterized in that: the material of the tooth-retracting sleeve (26) is made of spring steel, and the material of the positioning sleeve (27) is made of quenching Material hardness guarantee HRC50-85 degrees. 6.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述复位控制机构（32）控制定模板（2）与动模板（3）合模之后，模板（3）和动模托板（4）再合模。6. The mold with a single-screw control multi-cavity de-threading mechanism according to claim 1, characterized in that: after the reset control mechanism (32) controls the mold clamping of the fixed platen (2) and the movable platen (3), the platen (3) and the movable mold support plate (4) and then close the mold. 7.根据权利要求1所述的设有单螺杆控制多腔脱螺纹机构的模具，其特征在于：所述齿轮轴（25）上成型产品螺纹外形的螺纹间距与退牙轴套（26）上的螺纹间距相同。7. The mold with a single-screw controlled multi-cavity de-threading mechanism according to claim 1, characterized in that: the thread spacing of the thread profile of the molded product on the gear shaft (25) and the thread spacing on the thread-retracting sleeve (26) The thread spacing is the same.
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Denomination of invention: A mold with a single screw controlling a multi-cavity demolding mechanism

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