CN109366866A - A kind of novel turntable, shaft common type multiple groups part injection molding machine - Google Patents
A kind of novel turntable, shaft common type multiple groups part injection molding machine Download PDFInfo
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- CN109366866A CN109366866A CN201811250431.8A CN201811250431A CN109366866A CN 109366866 A CN109366866 A CN 109366866A CN 201811250431 A CN201811250431 A CN 201811250431A CN 109366866 A CN109366866 A CN 109366866A
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- shaft
- turntable
- injection molding
- dynamic model
- molding machine
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 11
- 230000003068 static effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 12
- 230000033001 locomotion Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009987 spinning Methods 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured 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
- B29C45/1742—Mounting of moulds; Mould supports
-
- 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
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1698—Making multilayered or multicoloured articles multicoloured articles moulded in one step
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to injection molding machine field, the novel turntable of open one kind, shaft common type multiple groups part injection molding machine include: dynamic model component, including dynamic model.Rotary disc assembly, including turntable, turntable shaft and the first force piece；Turntable shaft is mounted in dynamic model in hollow shape；Turntable is set on front side of dynamic model, and is socketed on turntable shaft；First force piece is mounted on dynamic model, and is sequentially connected with turntable.Rotating assembly, including shaft, shaft cylinder and the second force piece；Shaft cylinder is mounted in turntable shaft；Shaft is mounted in shaft cylinder；Second force piece is mounted on dynamic model, and is connect with rotating shaft transmission.The advantage of the invention is that injection molding machine structure is simple, easy to use, and power transmission efficiency is high.
Description
Technical field
The present invention relates to injection molding machine technical fields, more particularly to a kind of novel turntable, the injection molding of shaft common type multiple groups part
Machine.
Background technique
Disk shaft common type multiple groups part injection molding machine is the special injection molding machine of both a collection turntable, shaft function.This machine
The function of type is complete, and applicability is wide, it can both produce the double-colored and multicolored products of the boundary of rotating disc type injection molding machine speciality clearly,
Rotary shaft injection molding machine can be produced and wrap up or penetrate full class two-Color part.
Structure is complicated for existing disk shaft formula multi-component injection molding machine, and installation, maintenance and subsequent clients use have centainly
Trouble；Simultaneously because transmitting power correlated parts are more, power consumption is higher；And shaft, turntable are to share same force piece, are being used
When shaft function, turntable also assists in movement, causes power consumption higher, wastes power.When converting shaft turntable function, it is also necessary to dismantle
Auxiliary template, it is troublesome in poeration, waste worker's time.Driving parts are various, need to guarantee injection molding machine precision, then strictly to improve each
The accuracy of manufacture of part, prevents cumulative errors, improves the manufacturing cost of injection molding machine.
Patent No.: the patent of CN107738403A discloses: " a kind of turntable, shaft share model structure " provides
A kind of turntable, shaft share model structure, including dynamic model, turntable and auxiliary template, the dynamic model, turntable and auxiliary template center
It is provided with shaft, the dynamic model is wherein provided with multiple turntable elasticity jacking devices, the turntable elastic top support on one side
It sets for jacking turntable.The injection molding machine shaft, turntable function are provided using same driving device, and relevance between components
Height, transmission are complicated；Need to dismount auxiliary template when converting turntable, shaft function, it is inconvenient to use.
In order to solve the deficiencies in the prior art, need to design that a kind of power transmission efficiency is high, structure is simple and convenient uses
Novel rotary disk, shaft common type multiple groups part injection molding machine.
Summary of the invention
It is an object of the present invention to be directed to the above-mentioned deficiency of the prior art, the novel turntable of one kind, shaft common type are proposed
Multiple groups part injection molding machine.
The technical solution used to solve the technical problems of the present invention is that proposing that the novel turntable of one kind, shaft common type are more
Component injection molding machine, which is characterized in that include: dynamic model component, including dynamic model；
Rotary disc assembly, including turntable, turntable shaft and the first force piece；Turntable shaft is mounted in dynamic model in hollow shape；Turntable
It is set on front side of dynamic model, and is socketed on turntable shaft；First force piece is mounted on dynamic model, and is sequentially connected with turntable；
Rotating assembly, including shaft, shaft cylinder and the second force piece；Shaft cylinder is mounted in turntable shaft；Shaft is mounted on
In shaft cylinder；Second force piece is mounted on dynamic model, and is connect with rotating shaft transmission.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, a plurality of water is offered in the middle part of the shaft
Road.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, the rotating assembly further include: hold out oil
Cylinder is mounted on dynamic model, is connect with drive shaft, for controlling moving forward and backward for shaft；
Column is shunted, the tail end of shaft is mounted on, multiple water holes is offered on cylinder, is connected with the water channel in the middle part of the shaft
It is logical；
Belt wheel is set in shaft and shaft cylinder, passes through transmission band connection with the second force piece.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, between the shaft cylinder and turntable shaft also
It is provided with a pair of of conical bearing, shaft cylinder is mounted in the inner circle of conical bearing, and turntable shaft is set in the outer circle of conical bearing.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, the rotary disc assembly further includes gear, even
It connects between the first force piece and turntable.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, the turntable shaft is laterally outer close to turntable
A boss is protruded, turntable is set on boss.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, the dynamic model component further includes ejection oil
Cylinder is mounted on dynamic model.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, one is provided between dynamic model and turntable shaft
To roller bearing, shaft is mounted in the inner circle of roller bearing, and dynamic model covers in the outer circle of roller bearing.
In above-mentioned novel turntable, shaft common type multiple groups part injection molding machine, further includes solid plate, be disposed side by side on dynamic
The front side of mould, solid plate four corners are opened up there are four guide rod hole.
In the control method of above-mentioned novel turntable, shaft common type multiple groups part injection molding machine are as follows: when being switched to turntable mould
When formula: the first force piece is spiraled turnback by gear band turn, and shaft is static；
When being switched to shaft mode: holding out oil cylinder and first release shaft forward；Second force piece passes through conveyer belt and band
Wheel belt turn axis rotates 180 degree, and turntable is static.
Compared with prior art, the invention has the following advantages:
1, turntable of the invention provides power by the first force piece, and shaft provides power by the second force piece, and two movements are mutual
It does not interfere, when realizing shaft function, turntable is static, reduces the waste of power；
2, the setting for eliminating auxiliary template makes simplifying the structure for injection molding machine；When switching shaft, turntable function, directly
It can be realized by adjusting operation panel, do not need to dismount auxiliary template again；Reduce connection between each part, driven association
Property, the difficulty of processing of part is reduced, and reduce cumulative errors；
3, a pair of of roller bearing is provided between turntable shaft and dynamic model, the radial internal clearance of roller bearing is small, to the side of turntable
Inclining, it is small to influence with concentricity, ensure that the concentricity of turntable shaft.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is another viewing angle constructions schematic diagram of Fig. 1；
Fig. 3 is that Fig. 1 removes the structural schematic diagram after solid plate；
Fig. 4 is the respectant plan view of Fig. 3 autorotation disk；
Fig. 5 is partial view of the Fig. 4 after A-A cutting.
In figure, 1, dynamic model component；11, dynamic model；12, ejection cylinder；2, rotary disc assembly；21, turntable；22, turntable shaft；221,
Boss；23, the first force piece；24, transmission gear；25, roller bearing；3, rotating assembly；31, shaft；32, shaft cylinder；33,
Two force pieces；34, oil cylinder is held out；35, column is shunted；36, belt wheel；37, conveyer belt；38, conical bearing；4, solid plate；41, guide rod
Hole.
Specific embodiment
Technical solution of the present invention is described in further detail below by conjunction with the drawings and specific embodiments, but this
Invention is not limited to these examples.
As shown in Figs. 1-5, a kind of novel turntable, shaft common type multiple groups part injection molding machine include: dynamic model component 1；Turn
Disk component 2；Rotating assembly 3.
Dynamic model component 1, including dynamic model 11；Rotary disc assembly 2, including turntable 21, turntable shaft 22 and the first force piece 23；Turntable
Axis 22 is in hollow shape, is mounted in dynamic model 11；Turntable 21 is set to 11 front side of dynamic model, and is socketed on turntable shaft 22；First is dynamic
Power part 23 is mounted on dynamic model 11, and is sequentially connected with turntable 21；Rotating assembly 3, including shaft 31, shaft cylinder 32 and second are dynamic
Power part 33；Shaft cylinder 32 is mounted in turntable shaft 22；Shaft 31 is mounted in shaft cylinder 32；Second force piece 33 is mounted on dynamic model
On 11, and it is sequentially connected with shaft 31.
Turntable 21 provides power by the first force piece 23, and shaft 31 provides power by the second force piece 33, and two movements are mutual not
Interference.When injection molding machine realizes 31 function of shaft, turntable 21 is static, and when injection molding machine realizes 21 function of turntable, shaft 31 is static；By two
A force piece provides power, and driving parts are few, reduce the waste of power.
A plurality of water channel 311 is offered in the middle part of shaft 31.Rotating assembly 3 further include: hold out oil cylinder 34, shunt column 35, belt wheel
36.It holds out oil cylinder 34 to be mounted on dynamic model 11, be connect with shaft 31, for controlling moving forward and backward for shaft 31；Shunt column 35
It is mounted on the tail end of shaft, multiple water holes are offered on cylinder, is connected to the water channel at 31 middle part of shaft；The water channel can be according to not
Demand when same mold produces connects cooling water or heat preservation hydraulic oil, guarantees mold cooling equilibrium in use, prevents
Only local overcooling or overheat and generate temperature stress.Belt wheel 36 is set in shaft 31 and shaft cylinder 32, with the second force piece
33 are connected by conveyer belt 37.
A pair of of conical bearing 38 (also referred to as tapered roller bearing), shaft cylinder are additionally provided between shaft cylinder 32 and turntable shaft 22
32 are mounted in the inner circle of conical bearing 38, and turntable shaft 22 is set in the outer circle of conical bearing 38.Conical bearing 38 is for holding
By the radial direction and axial direction connected load based on radial load；Guarantee the concentricity of shaft 31 during rotation；It can bear
The ability of load is big, and limit speed is low.
Rotary disc assembly 2 further includes transmission gear 24, is connected between the first force piece 23 and turntable 21.A kind of its form
Are as follows: the gear teeth, the rotation of 23 rotation driven gear 24 of the first force piece are provided on turntable 21, gear 24 is nibbled with the gear teeth on turntable 21
Transmission is closed, turntable 21 is driven to rotate；Another form are as follows: the gear teeth are not provided on turntable 21, the first force piece 23 is with moving gear 24
Rotation, gear 24 drive turntable 21 to rotate by a driven gear again.When work, the first force piece 23 is passed with moving gear 24
21 rotary motion of turn disk.Turntable shaft 22 outwardly protrudes a boss 221 close to 21 side of turntable, and turntable 21 is set on boss 221；
Boss 221 offers multiple threaded holes on the face of turntable 21 and is bolted after turntable 21 is mounted on boss 221.
A pair of of roller bearing 25 is provided between dynamic model 11 and turntable shaft 22, shaft 31 is mounted in the inner circle of roller bearing 25, dynamic model
11 sets in the outer circle of roller bearing 25；Boss 221 on turntable shaft 22 can limit the axial movement of roller bearing 25；Roller
The radial internal clearance of bearing 25 is small, influences on the inclination of turntable and concentricity small.
Dynamic model component 1 further includes ejection cylinder 12, is mounted on dynamic model 11.When mold is installed on dynamic model, ejection oil
Cylinder 12 is connected with the liftout attachment of mold, for ejecting product after molding.
This injection molding machine further includes solid plate 4, is disposed side by side on the front side of dynamic model 11；There are four 4 four corners of solid plate open up
Guide rod hole 41；Correspondingly, dynamic model 11 also offers hole in the corresponding position of cover half guide rod hole 41, guide rod (not illustrating in figure) is passed through
The guide rod hole 41 of 4 four corners of hole and solid plate of 11 four corners of dynamic model, the two is connected, in motion process can to dynamic model 11 into
Row guiding.
Preferably, when injection molding machine is switched to turntable model: the first force piece 23 drives turntable 21 by transmission gear 24
The exchange of rear mold is completed in rotation to the mold being fixed on turntable 21；When switching outer shaft mode: 34, which hold out oil cylinder, will first turn
It is released before axial, the second force piece 33 drives shaft 31 to rotate 180 degree by conveyer belt 37 and belt wheel 36, is fixed on turntable 21
Mold rear mold it is motionless, then mold core rotate 180 degree, carry out next injection step.The handoff procedure need to only be operated by control
Panel, selection function can be realized, and reduce the dismounting work on hardware.
In the course of work, when requiring to produce the double-colored or multicolored products of boundary clearly；By taking double color mould as an example, molding two
Kind color needs two molds.Two molds are fixed in injection molding machine, specifically, the preceding mould of two molds is fixed on solid plate
It is in 180 degree on 4, the rear mold of two molds is fixed on turntable 21 also in 180 degree, and injection molding machine is switched to turntable model；Work as mould
After tool completes the injection molding of the first color, the first force piece 23 drives transmission gear 24, drives turntable 21 to rotate 180 degree, will fix
The rear mold of two molds is interchangeable on turntable, carries out the injection molding of another colored plastic, the product of injection formed, by ejection oil
Cylinder 12 pushes the ejecting mechanism on mold to eject product.
When require to produce wrap up or penetrate class two-Color part full when；For wrapping up product entirely, forming such product is only needed
One set of die, but require rear mold that can rotate.Injection molding machine is switched to shaft mode, and mold is fixed in injection molding machine, specifically, mould
The preceding mould of tool is fixed on solid plate 4, and rear mold is fixed on turntable 21, and shaft 31 is connected with the mold core of mold rear mold；Work as completion
When being molded for the first time, holds out oil cylinder 34 and shaft 31 is pushed to travel forward, drive the mold core of rear mold to travel forward, the second force piece 33
Conveyer belt 37 and belt wheel 36 are driven, drives the mold core of shaft 31 and rear mold to rotate 180 degree, holds out 34 return of oil cylinder, drive shaft
31 and rear mold mold core return, complete the mold core spinning movement of rear mold, carry out lower whorl injection molding.The product of injection formed, by ejection oil
Cylinder 12 pushes the ejecting mechanism on mold to eject product.
Specific embodiments are merely illustrative of the spirit of the present invention described in text.The technical field of the invention
Technical staff can make various modifications or additions to the described embodiments or be substituted in a similar manner,
However, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of novel turntable, shaft common type multiple groups part injection molding machine, which is characterized in that include: dynamic model component, including it is dynamic
Mould；
Rotary disc assembly, including turntable, turntable shaft and the first force piece；Turntable shaft is in hollow shape, is mounted in dynamic model；Turntable setting
On front side of dynamic model, and it is socketed on turntable shaft；First force piece is mounted on dynamic model, and is sequentially connected with turntable；
Rotating assembly, including shaft, shaft cylinder and the second force piece；Shaft cylinder is mounted in turntable shaft；Shaft is mounted on shaft
In cylinder；Second force piece is mounted on dynamic model, and is connect with rotating shaft transmission.
2. the novel turntable of one kind according to claim 1, shaft common type multiple groups part injection molding machine, which is characterized in that institute
It states and offers a plurality of water channel in the middle part of shaft.
3. the novel turntable of one kind according to claim 2, shaft common type multiple groups part injection molding machine, which is characterized in that institute
State rotating assembly further include: hold out oil cylinder, be mounted on dynamic model, connect with rotating shaft transmission, for controlling the advance of shaft with after
It moves back；
Column is shunted, the tail end of shaft is mounted on, multiple water holes is offered on cylinder, be connected to the water channel in the middle part of the shaft；
Belt wheel is set in shaft and shaft cylinder, passes through transmission band connection with the second force piece.
4. the novel turntable of one kind according to claim 1, shaft common type multiple groups part injection molding machine, which is characterized in that institute
It states and is additionally provided with a pair of of conical bearing between shaft cylinder and turntable shaft, shaft cylinder is mounted in the inner circle of conical bearing, turntable shaft
It is set in the outer circle of conical bearing.
5. the novel turntable of one kind according to claim 1, shaft common type multiple groups part injection molding machine, which is characterized in that institute
Stating rotary disc assembly further includes gear, is connected between the first force piece and turntable.
6. the novel turntable of one kind according to claim 4, shaft common type multiple groups part injection molding machine, which is characterized in that institute
It states turntable shaft and protrudes outward a boss close to turntable side, turntable is set on boss.
7. the novel turntable of one kind according to claim 1, shaft common type multiple groups part injection molding machine, which is characterized in that institute
Stating dynamic model component further includes ejection cylinder, is mounted on dynamic model.
8. the novel turntable of one kind according to claim 6, shaft common type multiple groups part injection molding machine, which is characterized in that institute
It states and is provided with a pair of of roller bearing between dynamic model and turntable shaft, shaft is mounted in the inner circle of roller bearing, and dynamic model is covered in roller
In the outer circle of bearing.
9. the novel turntable of one kind according to claim 1, shaft common type multiple groups part injection molding machine, which is characterized in that also
Including solid plate, it is disposed side by side on the front side of dynamic model, solid plate quadrangle opens up that there are four guide rod holes.
10. the control method of a kind of novel turntable, shaft common type multiple groups part injection molding machine characterized by comprising
S1, when being switched to turntable model, the first force piece is spiraled turnback by gear band turn, and shaft is static；
S2, when being switched to shaft mode, hold out oil cylinder and first release shaft forward；Second force piece passes through conveyer belt and belt wheel
Shaft is driven to rotate 180 degree, turntable is static.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250431.8A CN109366866A (en) | 2018-10-25 | 2018-10-25 | A kind of novel turntable, shaft common type multiple groups part injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250431.8A CN109366866A (en) | 2018-10-25 | 2018-10-25 | A kind of novel turntable, shaft common type multiple groups part injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109366866A true CN109366866A (en) | 2019-02-22 |
Family
ID=65401306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811250431.8A Pending CN109366866A (en) | 2018-10-25 | 2018-10-25 | A kind of novel turntable, shaft common type multiple groups part injection molding machine |
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| CN (1) | CN109366866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111319186A (en) * | 2020-03-24 | 2020-06-23 | 广东伊之密精密注压科技有限公司 | Backlash compensation device, multi-component injection molding machine and injection molding product production line |
| CN116945483A (en) * | 2023-09-06 | 2023-10-27 | 鸿正联塑(浙江)机械有限公司 | Rotating disc and rotating shaft dual-purpose device |
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