CN114454444A - Automatic demoulding device of injection mold - Google Patents
Automatic demoulding device of injection mold Download PDFInfo
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- CN114454444A CN114454444A CN202210185099.1A CN202210185099A CN114454444A CN 114454444 A CN114454444 A CN 114454444A CN 202210185099 A CN202210185099 A CN 202210185099A CN 114454444 A CN114454444 A CN 114454444A
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- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 238000001746 injection moulding Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
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- 238000005381 potential energy Methods 0.000 description 3
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- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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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
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
Abstract
The invention provides an automatic demoulding device of an injection mould, which is characterized by comprising the following components: the injection molding machine comprises an injection molding base, a driving motor, a feeding mechanism, a mold mechanism and a demolding mechanism, wherein the feeding mechanism is installed on the injection molding base, and the driving motor is in driving connection with the feeding mechanism. The mold mechanism comprises a fixed mold and a movable mold, wherein a containing groove is formed in the movable mold, the demolding mechanism is contained in the containing groove in a sliding mode and comprises a base and a self-adjusting speed-limiting assembly; the periphery of the mold core is provided with demolding through holes, and the base is provided with demolding push rods matched with the demolding through holes; the movable mold is provided with a limiting through hole, and the base is provided with a limiting guide rod matched with the limiting through hole; the self-adjusting speed limiting assembly is arranged between the base and the movable mold. In conclusion, the automatic demoulding device of the injection mould can automatically separate the product from the mould cavity and the movable mould after the product is formed, thereby reducing the time consumption of manual demoulding, improving the working efficiency and reducing the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an automatic demolding device of an injection mold.
Background
The injection molding technology is also called injection molding, and is a processing method of injection and molding. The method comprises the steps of injecting a completely molten plastic material into a mold cavity at a certain temperature under high pressure, and cooling and solidifying to obtain a molded product. The method is suitable for batch production of parts with complex shapes, and has the advantages of high production speed, high efficiency and automation realization.
After the mold is cooled to solidify, it is removed from the mold cavity. In prior art, the high demoulding mechanism of practicality lacks on some injection molding machines, after the product shaping, makes the shaping product paste on the movable mould easily, therefore needs the staff to take off the product alone manually, not only wastes time and energy, and remaining waste heat scalds the staff easily moreover, has certain danger.
Therefore, how to design an automatic demoulding device of an injection mould, the product can be automatically separated from a mould cavity and a movable mould after being formed, so that the time consumption of manual demoulding is reduced, the working efficiency is improved, and the potential safety hazard is reduced, which is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the automatic demoulding device of the injection mould, so that a product can be automatically separated from a mould cavity and a movable mould after being formed, the time consumed by manual demoulding is reduced, the working efficiency is improved, and the potential safety hazard is reduced.
The purpose of the invention is realized by the following technical scheme:
an automatic demolding device of an injection mold, comprising: the injection molding machine comprises an injection molding base, a driving motor, a feeding mechanism, a mold mechanism and a demolding mechanism, wherein the feeding mechanism is installed on the injection molding base, and the driving motor is in driving connection with the feeding mechanism;
the feeding mechanism comprises: go into hopper, pay-off sleeve and spiral push rod, the pay-off sleeve is hollow structure, spiral push rod rotationally locates in the pay-off sleeve, the pay-off sleeve has pan feeding end and injection end, it locates to go into the hopper the pan feeding end, mold machine construct with injection end intercommunication, demoulding mechanism activity is located mold machine constructs.
In one embodiment, the feeding sleeve is sleeved with a heating mechanism, and the heating mechanism is positioned close to the injection end.
In one embodiment, the mold mechanism comprises a fixed mold and a movable mold, the fixed mold is provided with a mold groove, the mold groove is communicated with the injection end of the feeding sleeve, the movable mold is provided with a mold core matched with the mold groove, and the movable mold is pressed on or separated from the fixed mold;
the movable die is provided with an accommodating groove, and the accommodating groove is positioned on one side of the movable die, which is far away from the die core; the demolding mechanism is accommodated in the accommodating groove in a sliding mode and comprises a base and a self-adjusting speed-limiting assembly;
demolding through holes are formed in the periphery of the mold core, and demolding push rods matched with the demolding through holes are arranged on the base; the movable die is provided with a limiting through hole, and the base is provided with a limiting guide rod matched with the limiting through hole; the self-adjusting speed limiting assembly is arranged between the base and the movable die.
In one embodiment, the self-adjusting speed limit assembly comprises: the device comprises a mounting seat, a deflection piece, a holding wheel and a telescopic elastic piece;
the mounting seat is fixedly arranged on the base, the deflection element is rotatably arranged on the mounting seat and comprises a pressure side and a connecting side, the abutting wheel is rotatably arranged on the pressure side of the deflection element, and the telescopic elastic element is connected with the connecting side of the deflection element and the movable die;
a hooking hole is formed in the connecting side of the deflection swinging piece, a hooking block is arranged on the inner wall of the accommodating groove, the telescopic elastic piece is of a tension spring structure, one end of the telescopic elastic piece is connected with the hooking hole, and the other end of the telescopic elastic piece is connected with the hooking block;
the inner wall of the containing groove is provided with a clamping groove which is of a semi-arc structure matched with the abutting wheel.
In one embodiment, a boss is arranged on the mounting seat, a pin through hole is arranged on the boss, a pin hole is formed in the deflection swing part, and the deflection swing part is hinged to the boss through a pin.
In one embodiment, a plurality of the demolding through holes are distributed around the mold core in an annular array, the demolding through holes are close to the mold core edge, and the demolding push rods on the base are distributed in an annular array.
In one embodiment, the length of the demolding push rod is smaller than or equal to that of the limiting guide rod.
In one embodiment, a positioning block is arranged on the movable die, and a positioning groove matched with the positioning block is formed in the fixed die.
In conclusion, the automatic demoulding device of the injection mould can automatically separate the product from the mould cavity and the movable mould after the product is formed, thereby reducing the time consumption of manual demoulding, improving the working efficiency and reducing the potential safety hazard.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of an automatic demolding device of an injection mold according to the present invention;
FIG. 2 is a schematic view of the internal structure of the feeding mechanism shown in FIG. 1;
FIG. 3 is a schematic structural view of the mold mechanism and the demolding mechanism shown in FIG. 1;
FIG. 4 is a schematic view of the movable mold shown in FIG. 3 in a fitted relationship with a demolding mechanism;
fig. 5 is a cross-sectional view of the mold mechanism and the ejector mechanism shown in fig. 1;
FIG. 6 is a schematic illustration of the self-adjusting governor assembly of FIG. 5;
FIG. 7 is an exploded schematic view of the self-adjusting speed limit assembly shown in FIG. 5;
FIG. 8 is a schematic partial cross-sectional view of the moving mold shown in FIG. 5;
FIG. 9 is a schematic diagram of the cooperative relationship of the self-adjusting governor assembly and the movable module.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The present invention provides an automatic demolding device 10 of an injection mold, as shown in fig. 1, comprising: the injection molding machine comprises an injection molding base 100, a driving motor 200, a feeding mechanism 300, a mold mechanism 400 and a demolding mechanism 500, wherein the feeding mechanism 300 is installed on the injection molding base 100, and the driving motor 200 is in driving connection with the feeding mechanism 300.
As shown in fig. 2, the feeding mechanism 300 includes: the demolding mechanism comprises a feeding hopper 310, a feeding sleeve 320 and a spiral pushing rod 330, wherein the feeding sleeve 320 is of a hollow structure, the spiral pushing rod 330 is rotatably arranged in the feeding sleeve 320, the feeding sleeve 320 is provided with a feeding end 321 and an injection end 322, the feeding hopper 310 is arranged at the feeding end 321, the mold mechanism 400 is communicated with the injection end 322, and the demolding mechanism 500 is movably arranged on the mold mechanism 400.
In this embodiment, as shown in fig. 2, the feeding sleeve 320 is sleeved with a heating mechanism 340, and the heating mechanism 340 is located near the injection end 322. In use, injection molding material enters the feeding sleeve 320 from the feeding hopper 310, is transported to the injection end 322 by the spiral pushing rod 330, is heated to a molten state by the heating mechanism 340, and is then injected into the mold mechanism 400.
In this embodiment, as shown in fig. 3 and 4, the mold mechanism 400 includes a fixed mold 410 and a movable mold 420, the fixed mold 410 is provided with a mold recess 401, the mold recess 401 is communicated with the injection end 322 of the feeding sleeve 320, the movable mold 420 is provided with a mold core 402 matched with the mold recess 401, and the movable mold 420 is pressed on or separated from the fixed mold 410. The movable mold 420 is provided with a receiving groove 430, and the receiving groove 430 is located on a side of the movable mold 420 away from the mold core 402. The demolding mechanism 500 is slidably received in the receiving groove 430, and the demolding mechanism 500 includes a base 510 and a self-adjusting speed-limiting assembly 600.
Further, as shown in fig. 4, the mold core 402 is provided with a mold release through hole 421 at its periphery, and the base 510 is provided with a mold release push rod 511 which is engaged with the mold release through hole 421. The movable mold 420 is provided with a limiting through hole 422, and the base 510 is provided with a limiting guide rod 512 which is matched with the limiting through hole 422. The self-adjusting speed limit assembly 600 is disposed between the base 510 and the movable mold 420. Preferably, in this embodiment, the length of the ejector push rod 511 is less than or equal to the length of the limit guide rod 512.
With the above structure, the main operation principle of the automatic demolding device 10 of the injection mold of the present invention is as follows, please refer to fig. 1, fig. 2 and fig. 5 together:
when in use, the movable die 420 is pressed on the fixed die 410, the die core 402 is accommodated in the die groove 401, a die cavity is formed between the fixed die and the die cavity, and the injected high-temperature injection molding material can fill the die cavity and becomes a molded injection molding product after being cooled; at the same time, when the movable mold 420 presses and holds the fixed mold 410, the limit guide rod 512 of the base 510 passes through the limit through hole 422 and abuts against the fixed mold 410. At this time, the demolding mechanism 500 cannot slide in the direction close to the mold core 402 under the support of the fixed mold 410, the demolding push rod 511 is located in the demolding through hole 421, and the end face of the demolding push rod 511 just fills up the demolding through hole 421;
after the product is molded, the movable mold 420 is driven by an external power source to move away from the fixed mold 410, so that the product is attached to the mold core 402 and separated from the mold groove 401; at this time, the limiting guide rod 512 is no longer supported by the fixed mold 410, the demolding mechanism 500 in the receiving groove 430 slides towards the mold core 402, and the demolding push rod 511 passes through the demolding through hole 421 and pushes out the product attached to the mold core 402, so that the product is separated from the mold core 402. The ejected product will fall out of the mold mechanism 400 and be collected by the worker. Then, the movable mold 420 approaches and presses the fixed mold 410 again to prepare for the next injection molding; in the process, the limit guide rod 512 will press against the fixed mold 410 again, and then the demolding mechanism 500 is pushed to slide in the opposite direction, so that the demolding push rod 511 retracts into the demolding through hole 421 again, and is ready for the next demolding.
It is noted that in the present embodiment, as shown in fig. 4, a plurality of through holes 421 are distributed in an annular array around the core 402, and the through holes 421 are close to the edge of the core 402, and the ejector pins 511 on the base 510 are also distributed in an annular array. The distribution of the ejector pins 511 facilitates the ejector pins 511 to push the product attached to the core 402 from multiple directions simultaneously, thereby reducing the probability of the product sticking to the core 402. Moreover, such a distribution allows to distribute the pressure exerted by each stripper push rod 511 on the product, thus reducing the pressure to which a single point of the product is subjected, thus avoiding damaging the product.
To be further explained, the sliding of the mold releasing mechanism 500 causes the mold releasing push rod 511 to protrude or retract into the mold releasing through hole 421, thereby pushing out the molded product attached to the mold core 402. The ejection mechanism 500 can slide in a variety of driving manners, such as: the demoulding mechanism 500 is driven to slide by using a hydraulic cylinder, an air cylinder and other mechanisms; alternatively, an elastic member is provided between the base 510 and the movable mold 420, and the ejector mechanism 500 is powered by the elastic force.
However, the above driving methods have drawbacks: firstly, a power source needs to be additionally introduced by using mechanisms such as a hydraulic cylinder, an air cylinder and the like, and a control system needs to be introduced for control, so that the demoulding mechanism 500 is difficult to install, and the production cost is increased; secondly, although an elastic member is simply provided, and an elastic force can be used as a power of the demolding mechanism 500, the acceleration of the demolding mechanism 500 tends to decrease from large due to the characteristics of the elastic member, that is, the demolding push rod 511 has the maximum acceleration when starting to slide, which causes a strong rigid impact when the demolding push rod 511 contacts with a product, thereby causing a phenomenon of damaging the product.
In order to solve the above problems, as shown in fig. 4 and 5, the ejector mechanism 500 of the present invention is particularly provided with a self-adjusting governor assembly 600, and the self-adjusting governor assembly 600 is provided between the base 510 and the movable mold 420, and the self-adjusting governor assembly 600 is used to smooth the sliding speed of the base 510. The following description of the principal structure of the self-adjusting governor assembly 600:
specifically, as shown in FIGS. 6 and 7, the self-adjusting speed limit assembly 600 includes: a mounting seat 610, a swinging member 620, a holding wheel 630 and a flexible elastic member 640. The mounting seat 610 is fixed on the base 510, the swinging member 620 is rotatably disposed on the mounting seat 610, the swinging member 620 includes a pressing side 621 and a connecting side 622, the retaining wheel 630 is rotatably disposed on the pressing side 621 of the swinging member 620, the elastic member 640 connects the connecting side 622 of the swinging member 620 with the movable mold 420, and the elastic member 640 provides an elastic force for the demolding mechanism 500.
Preferably, as shown in fig. 3, an engaging groove 432 is formed on an inner wall of the accommodating groove 430, and the engaging groove 432 is a semi-arc structure engaged with the holding wheel 630. When the movable mold 420 presses and holds the fixed mold 410, the limit guide rod 512 of the base 510 abuts against the fixed mold 410, and at this time, the abutting wheel 630 of the self-adjusting governor assembly 600 sinks into the engaging groove 432.
In this embodiment, as shown in fig. 7, 8 and 9, a hooking hole 623 is formed on the connecting side 622 of the deflecting member 620, a hooking block 431 is formed on the inner wall of the accommodating groove 430, the elastic member 640 is a tension spring structure, one end of the elastic member 640 is connected to the hooking hole 623, and the other end of the elastic member 640 is connected to the hooking block 623.
In this embodiment, as shown in fig. 7, a boss 611 is disposed on the mounting base 610, a pin through hole 612 is disposed on the boss 611, a pin hole 625 is disposed on the deflection piece 620, and the deflection piece 620 is hinged to the boss 611 through a pin 624, that is, the pin 624 penetrates the pin hole 625 and the pin through hole 612, so that the deflection piece 620 is hinged to the boss 611.
Thus, the main structure of the self-adjusting governor assembly 600 is illustrated.
Next, the operation principle of the ejector mechanism 500 of the present invention will be described with reference to the above-described structure, and refer to fig. 5 and 9:
when the movable mold 420 presses and holds the fixed mold 410, the limit guide rod 512 of the base 510 abuts against the fixed mold 410, and at this time, the demolding mechanism 500 is far away from the mold core 402, the telescopic elastic member 640 is in a stretching state, and the abutting wheel 630 sinks into the engaging groove 432. Since the deflection element 620 is hinged to the boss 611 of the mounting base 610, and the connecting side 622 of the deflection element 620 is under the pulling force F of the elastic element 640, the pulling force of the connecting side 622 will make the deflection element 620 have a moment of deflection, so as to provide a pressing force F 'for the supporting wheel 630 to press against the inner wall of the receiving groove 430, and the magnitude of the pressing force F' is proportional to the magnitude of the pulling force F;
after the product is molded, the movable mold 420 is separated from the fixed mold 410, the limit guide rod 512 is not supported by the fixed mold 410 any more, the elastic potential energy of the elastic member 640 is converted into kinetic energy, and the demolding mechanism 500 slides towards the mold core 402, so that the demolding push rod 511 passes through the demolding through hole 421 and pushes out the product attached to the mold core 402. In the process, since the elastic force of the elastic member 640 gradually decreases with the decrease of the distance, the moment of the deflecting member 620 also gradually decreases, and the pressing force F' of the pressing wheel 630 on the inner wall of the receiving groove 430 also gradually decreases. Since the friction force is determined by the friction coefficient and the pressure F ', the friction force between the retaining wheel 630 and the inner wall of the accommodating groove 430 is reduced with the reduction of the pressure F' under the condition that the friction coefficient is not changed. Initially, the pressing force F' of the retaining wheel 630 is larger, and the friction force received by the retaining wheel 630 is larger, so that the sliding speed of the base 510 is slowed down, and the impact force of the demolding push rod 511 on the product is reduced. As the base 510 slides continuously, the pressure F' of the retaining wheel 630 decreases gradually, and although the friction force applied to the retaining wheel 630 decreases, the elastic force provided by the elastic member 640 also decreases, so that the base 510 still cannot obtain a large acceleration. In this manner, the sliding speed of the base 510 under the influence of the retaining wheel 630 is limited, thereby facilitating the ejection of the product adhering to the core 402.
It is emphasized that the design of the ejector mechanism 500 has two distinct benefits:
on one hand, the elastic force of the elastic members 640 is used as a power for sliding the base 510, thereby reducing the number of power sources. When the movable mold 420 presses and holds the fixed mold 410, the limit guide rod 512 of the base 510 abuts against the fixed mold 410, so that the ejector mechanism 500 is abutted away from the mold core 402, and the elastic member 640 is stretched and accumulates elastic potential energy; when the movable mold 420 is separated from the fixed mold 410, the limit guide rod 512 is not supported by the fixed mold 410 any more, and the elastic member 640 converts the elastic potential energy into the kinetic energy, so as to drive the demolding mechanism 500 to slide;
on the other hand, the pulling force F of the elastic member 640 is linked to the pressure F' of the supporting wheel 630 by the deflection unit 620, so that the sliding friction of the base 510 changes with the real-time elastic force of the elastic member 640, thereby limiting the acceleration of the base 510 during the sliding process, and keeping the sliding speed of the base 510 stable without changing due to the elastic force of the elastic member 640.
It is further emphasized that an engaging groove 432 (shown in fig. 8) is formed on the inner wall of the receiving groove 430, and when the movable mold 420 presses and holds the fixed mold 410, the retaining wheel 630 falls into the engaging groove 432. The receiving groove 430 functions to delay the sliding of the base 510. Specifically, when the movable mold 420 is detached from the fixed mold 410, since the retaining wheel 630 is caught in the engaging groove 432 in the initial state, the retaining wheel 630 needs to roll over the inner wall of the engaging groove 432 at the very beginning instant. Since the inner wall of the engaging groove 432 has a slope, it takes a while for the holding wheel 630 to roll, and the holding wheel 630 only rolls a small distance during the time, which can be considered that the holding wheel 630 is almost stationary during the time. That is, the retaining wheel 630 stagnates for a short time while passing over the engaging groove 432. During this time, the movable mold 420 is separated from the fixed mold 410, and the molded product is also separated from the fixed mold 410 and attached to the mold core 402; subsequently, the ejector pins 511 gradually protrude and push the molded product away from the mold core 402, effecting product ejection. That is, the engaging groove 432 is engaged with the retaining wheel 630, so that at the beginning of mold opening, the whole demolding mechanism 500 can be given a delay action, and the demolding mechanism 500 can respond in a short time, which provides time for mold opening and prevents a mold-opened product from being ejected immediately and contacting the fixed mold 410.
In one embodiment, the movable mold 420 is provided with a positioning block 423 (as shown in fig. 4), and the fixed mold 410 is provided with a positioning slot 411 (as shown in fig. 3) engaged with the positioning block 423. When the movable mold 420 approaches and presses the fixed mold 410, the positioning block 423 cooperates with the positioning groove 411 to assist the movable mold 420 in correcting the moving direction, thereby preventing the movable mold 420 and the fixed mold 410 from being dislocated.
In addition, the retaining wheel 630 of the present invention can be an inflatable tire structure, and the retaining wheel 630 can be inflated to achieve the purpose of adjusting the friction force, so as to achieve the purpose of smooth mold opening. For example, if the holding wheel 630 is inflated more, the holding wheel 630 will expand more, and the friction between the holding wheel 630 and the inner wall of the receiving groove 430 will naturally be smaller, or if the holding wheel 630 is inflated less, the holding wheel 630 will collapse more, and the friction between the holding wheel 630 and the inner wall of the receiving groove 430 will naturally be larger.
In summary, the automatic demolding device 10 for the injection mold of the present invention can automatically separate the product from the mold cavity and the movable mold 420 after molding, thereby reducing the time consumed by manual demolding, improving the working efficiency, and reducing the potential safety hazard.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An automatic demolding device of an injection mold is characterized by comprising: the injection molding machine comprises an injection molding base, a driving motor, a feeding mechanism, a mold mechanism and a demolding mechanism, wherein the feeding mechanism is installed on the injection molding base, and the driving motor is in driving connection with the feeding mechanism;
the feeding mechanism comprises: go into hopper, pay-off sleeve and spiral push rod, the pay-off sleeve is hollow structure, spiral push rod rotationally locates in the pay-off sleeve, the pay-off sleeve has pan feeding end and injection end, it locates to go into the hopper the pan feeding end, mold machine construct with injection end intercommunication, demoulding mechanism activity is located mold machine constructs.
2. The automatic demolding device for injection molds as claimed in claim 1, wherein a heating mechanism is sleeved on the feeding sleeve and located close to the injection end.
3. The automatic demolding device of an injection mold according to claim 1, wherein the mold mechanism comprises a fixed mold and a movable mold, a mold groove is formed in the fixed mold, the mold groove is communicated with the injection end of the feeding sleeve, a mold core matched with the mold groove is formed in the movable mold, and the movable mold is pressed to hold or separate from the fixed mold;
the movable die is provided with an accommodating groove, and the accommodating groove is positioned on one side of the movable die, which is far away from the die core; the demolding mechanism is accommodated in the accommodating groove in a sliding mode and comprises a base and a self-adjusting speed-limiting assembly;
demolding through holes are formed in the periphery of the mold core, and demolding push rods matched with the demolding through holes are arranged on the base; the movable die is provided with a limiting through hole, and the base is provided with a limiting guide rod matched with the limiting through hole; the self-adjusting speed limiting assembly is arranged between the base and the movable die.
4. The automatic ejection device for injection molds of claim 3, wherein the self-adjusting speed limit assembly comprises: the device comprises a mounting seat, a deflection piece, a holding wheel and a telescopic elastic piece;
the mounting seat is fixedly arranged on the base, the deflection swinging part is rotatably arranged on the mounting seat, the deflection swinging part comprises a pressure applying side and a connecting side, the abutting wheel is rotatably arranged on the pressure applying side of the deflection swinging part, and the telescopic elastic part is connected with the connecting side of the deflection swinging part and the movable die;
a hooking hole is formed in the connecting side of the deflection swinging piece, a hooking block is arranged on the inner wall of the accommodating groove, the telescopic elastic piece is of a tension spring structure, one end of the telescopic elastic piece is connected with the hooking hole, and the other end of the telescopic elastic piece is connected with the hooking block;
the inner wall of the containing groove is provided with a clamping groove which is of a semi-arc structure matched with the abutting wheel.
5. The automatic demolding device of an injection mold as claimed in claim 4, wherein a boss is arranged on the mounting base, a pin through hole is arranged on the boss, a pin hole is arranged on the deflection swinging part, and the deflection swinging part is hinged to the boss through a pin.
6. The automatic release device of claim 3, wherein a plurality of the release through holes are distributed in an annular array around the mold core, the release through holes are located near the edge of the mold core, and the release push rods on the base are distributed in an annular array.
7. The automatic demolding device of claim 3, wherein the length of the demolding push rod is smaller than or equal to the length of the limiting guide rod.
8. The automatic demolding device for injection molds as claimed in claim 3, wherein the movable mold is provided with a positioning block, and the fixed mold is provided with a positioning groove matched with the positioning block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210185099.1A CN114454444A (en) | 2022-02-28 | 2022-02-28 | Automatic demoulding device of injection mold |
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| CN202210185099.1A CN114454444A (en) | 2022-02-28 | 2022-02-28 | Automatic demoulding device of injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284665A (en) * | 2022-08-17 | 2022-11-04 | 南通冠优达磁业股份有限公司 | Forming die of manganese zinc ferrite magnetic core |
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| CN203344266U (en) * | 2013-05-31 | 2013-12-18 | 广州现代塑料有限公司 | Easily-demoulded injection mould |
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| CN110978386A (en) * | 2019-12-18 | 2020-04-10 | 杭州嘉通机械有限公司 | Multicolor injection mold and injection molding method thereof |
| CN112976508A (en) * | 2021-02-08 | 2021-06-18 | 柏祝美 | Mould for injection moulding |
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| CN115284665A (en) * | 2022-08-17 | 2022-11-04 | 南通冠优达磁业股份有限公司 | Forming die of manganese zinc ferrite magnetic core |
| CN115284665B (en) * | 2022-08-17 | 2023-11-28 | 南通冠优达磁业股份有限公司 | Forming die of manganese zinc ferrite magnetic core |
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