CN216884949U - Feeding system for injection mold - Google Patents
Feeding system for injection mold Download PDFInfo
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- CN216884949U CN216884949U CN202123238558.8U CN202123238558U CN216884949U CN 216884949 U CN216884949 U CN 216884949U CN 202123238558 U CN202123238558 U CN 202123238558U CN 216884949 U CN216884949 U CN 216884949U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model relates to a feeding system for an injection mold, which comprises: feed cylinder, auger blade and screw rod, wherein: the outer surface of the charging barrel is provided with a feeding hole, and the opening of the charging barrel is a discharging hole; a screw rotatably disposed within the barrel; the auger blade is fixedly arranged on the screw rod, and the outer diameter of the screw rod is gradually increased along the directions of the feeding hole and the discharging hole so as to solve the technical problem of reducing the load of the electric heating element.
Description
Technical Field
The utility model relates to the field of injection molding, in particular to a feeding system for an injection mold.
Background
Chinese patent CN202021639140.0 discloses an injection molding machine screw rod injection molding device, including a feeding section of thick bamboo, hot plate, motor and hydraulic telescoping rod, the outside of a feeding section of thick bamboo is provided with the hot plate, and the outside parcel of hot plate has the heat preservation, the right side top of a feeding section of thick bamboo is provided with the feeder hopper, and the left end fixedly connected with play feed cylinder of a feeding section of thick bamboo, the inside of a feeding section of thick bamboo is provided with the pivot, and the outside of pivot is connected with the spiral leaf, the motor sets up the right-hand member at a feeding section of thick bamboo, and the output of motor is connected with the right-hand member of pivot, the left end top of frame is connected with the axle bed, and the below of frame is provided with hydraulic telescoping rod, the left end of pivot is connected with the feeding axle, and the feed chute has been seted up to the inside of feeding axle. The screw injection molding device of the injection molding machine is convenient for carrying out heat preservation and insulation and noise reduction on the feeding cylinder, is convenient for saving energy consumption, also avoids personnel from scalding, can push molten raw materials, and is convenient for injection molding of a large mold;
although the utility model can solve the problems that the heat insulation of the feeding cylinder is inconvenient in the using process, the heat dissipation is fast, workers are easy to scald, the melted raw materials are only sprayed out through the screw rod, the pressure is low, and the injection molding machine is inconvenient to adapt to a large injection mold, in the actual using process, the materials are always required to be heated due to the fact that the materials are required to be melted, and the heating wires can cause certain damage to the heating wires under the long-time heating state, namely the service life is influenced, and the requirement on the electric quantity is also large;
for this reason, there is an urgent need to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, an object of the present invention is to provide a feeding system for an injection mold, so as to solve the technical problem of reducing the load of an electric heating element.
To achieve the above object, the present invention provides a feeding system for an injection mold, comprising: feed cylinder, auger blade and screw rod, wherein:
the outer surface of the charging barrel is provided with a feeding hole, and the opening of the charging barrel is a discharging hole;
the screw rod is rotatably arranged in the charging barrel;
the auger blade is fixedly arranged on the screw rod;
the outer diameter of the screw is gradually increased along the direction of the feed inlet and the discharge outlet.
As a further description of the above technical solution:
the screw blade and the charging barrel are in clearance fit.
As a further description of the above technical solution:
the inner diameter of the discharge hole of the charging barrel is gradually reduced along the direction of the feed hole of the charging barrel and the opening of the charging barrel.
As a further description of the above technical solution:
the one-way flow guide piece is used for preventing the material in the charging barrel from flowing back to the feeding hole from the discharging hole.
As a further description of the above technical solution:
one-way water conservancy diversion spare includes ring, sealing ring and locating part, wherein:
the circular ring is sleeved on the screw and fixedly connected with the screw;
the sealing ring is provided with a through hole, the aperture of the through hole is larger than the outer diameter of the screw and the inner diameter of the circular ring, the screw penetrates through the through hole, and the sealing ring is sealed in the charging barrel in a sliding manner;
the locating part, with the tip fixed connection that is close to discharge gate department of screw rod, seted up the connecting hole on the locating part, the connecting hole with through-hole selectivity intercommunication, connecting hole and discharge gate communicate each other, the locating part with be equipped with the clearance between the feed cylinder.
As a further description of the above technical solution:
the limiting part is a cone frustum, the cone frustum is fixedly connected with the end part, close to the discharge opening, of the screw rod, the outer diameter of the cone frustum, close to the discharge opening, is the minimum outer diameter of the cone frustum, the connecting hole is formed in the cone frustum, the taper of the cone frustum is equal to that of the opening of the material barrel, and the cone frustum, the screw rod and the material barrel are coaxially arranged.
As a further description of the above technical solution:
the screw rod includes first round bar, taper pipe and second round bar, wherein: first round bar, circular cone pole and second round bar coaxial fixed setting in proper order, the external diameter of first round bar is greater than the external diameter of second round bar, and first round bar is close to the discharge gate.
As a further description of the above technical solution:
the first round rod, the conical rod, the second round rod and the auger blade are fixedly connected in an integrated forming mode through a casting process.
As a further description of the above technical solution:
the charging barrel is wrapped by a heat-insulating layer.
Compared with the prior art, the utility model has the beneficial effects that:
(one) carry out the change of adaptability through the structure to the screw rod, the direction grow gradually along feed inlet and discharge gate is followed to the external diameter of screw rod promptly, thereby can be so that the space along feed inlet and discharge gate in the feed cylinder is littleer and littleer (the space here is the memory space of material in the feed cylinder), thereby can be so that the frictional force grow between the inner wall of material and feed cylinder and material, and the friction can have thermal characteristics, consequently, here can not heat the material through heating element and carry out the heat production of self, the current problem that has increased electric heating element load has finally been solved.
(two) above-mentioned process although can solve the problem that reduces electric heating element load, but the heat that relies on the friction to produce heat is not very high, in order to solve current problem, set up through adopting clearance fit between auger blade and the feed cylinder, can understand, because what adopt between auger blade and the feed cylinder is clearance fit, clearance between auger blade and the feed cylinder is less promptly, when the material is carried along auger blade's direction of rotation, along with the diminishing in space, and the clearance of feed cylinder and auger blade is less, thereby can squeeze away the air in this space, thereby can make the effective contact surface between the material bigger, thereby the efficiency that the friction produced is higher.
In the embodiments of the first and second embodiments, although the problem of heat generation of the material itself is solved, the final purpose of the feeding system is to melt and stir the material uniformly, and then inject the material into the cavity formed by the fixed mold and the movable mold, if the pressure of the injected material is not enough, the material cannot fill the cavity, and finally the expected product cannot be formed, so that the melted material can be stably injected into the cavity, and whether the product can be effectively molded is determined.
(IV) in the above embodiment, the problem of preventing the material in the mold from flowing back into the charging barrel should be considered, if no measures are taken to prevent the occurrence of this situation, the product cannot be effectively finished in the mold, pressure maintaining needs to be performed on the cavity of the mold during the product molding process to enable the molten plastic in the mold to fill the whole cavity, and the pressure of the feeding port is lower than the pressure in the cavity, which is the situation that the material flows back, in order to solve this problem, the problem is solved by using a ring, a sealing ring and a limiting piece, specifically, when the material moves into the cavity of the mold, the moving material pushes the sealing ring to move leftwards until the sealing ring abuts against the limiting piece, at this moment, the material can enter the discharging port through the through hole and finally enter the cavity, when the cavity is filled, the material pushes the sealing ring to move rightwards, until the sealing ring and the circular ring are mutually abutted, at the moment, the outer diameter of the through hole is larger than the inner diameter of the circular ring, so that sealing is realized, and the purpose of preventing backflow is achieved.
(five) in (two), although can solve the purpose that improves the material heat production, but, in actual operation's in-process, if auger blade's upper and lower space is asymmetric, then it is inhomogeneous to make the heat production of material in auger blade, thereby it also can not the misce bene to lead to the material under auger blade's stirring effect, finally lead to getting into the material of mould die cavity when the shaping product, product surface department can appear crack or sand hole, in order to solve this kind of problem, through adopting the circular cone platform, thereby screw rod and the coaxial setting of feed cylinder can reach and make the material produce the even and stirring of each position heat production in auger blade from not influencing the shaping of product in the mould.
(VI) in (one), the screw rod has adopted specific institutional advancement, just can realize the heat-generating function of material self, however, because the shape of auger blade is fixed, and the shape of screw rod is the toper, when fixing auger blade on the screw rod, adopt the welding of traditional type or the mode of fixed connection such as screw rod, all can have certain problem, it is inconvenient or connect unstably promptly to install, screw rod processing technology is comparatively complicated, in order to solve this kind of problem, through with first round bar, the taper rod, second round bar and auger blade integrated into one piece fixed connection, thereby can make the processing of auger blade and screw rod simple, and the high life of joint strength is longer.
Drawings
FIG. 1 is a perspective view of a screw for an injection mold feed system of the present invention;
FIG. 2 is a schematic view of a feed system for an injection mold of the present invention.
In the figure: 1. a charging barrel; 11. a feed inlet; 12. a discharge port; 2. a screw blade; 3. a screw; 31. a first round bar; 32. a conical rod; 33. a second round bar; 4. a one-way flow guide member; 41. a circular ring; 42. a seal ring; 421. a through hole; 43. a limiting member; 431. a truncated cone; 4311. and connecting the holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example 1:
the present invention provides a feeding system for an injection mold, as shown in fig. 1 and shown in fig. 2, including: feed cylinder 1, auger blade 2 and screw rod 3, wherein:
the charging device comprises a charging barrel 1, a charging hole 11 is formed in the outer surface of the charging barrel 1, a discharging hole 12 is formed in the opening of the charging barrel 1, and a heat-insulating sleeve is wrapped on the outer surface of the charging barrel 1 and used for preventing heat of materials in the charging barrel 1 from losing;
a screw 3 rotatably disposed in the barrel 1, wherein the screw 3 comprises: a first round bar 31, a conical bar 32 and a second round bar 33, wherein: the first round rod 31, the conical rod 32 and the second round rod 33 are coaxially and integrally formed and fixedly arranged in sequence, the outer diameter of the first round rod 31 is larger than that of the second round rod 33, and the first round rod 31 is close to the discharge hole 12;
the auger blade 2 is integrally formed on the screw 3, and specifically, the auger blade 2 is integrally formed on the first round bar 31, the conical bar 32 and the second round bar 33.
The working mode of the utility model is described as follows:
the material enters the charging barrel 1 through the feeding hole 11 of the charging barrel 1, the material in the charging barrel 1 advances along the spiral groove of the auger blade 2 until entering the discharging hole 12 of the charging barrel 1 under the action of the rotation of the auger blade 2, the utility model carries out adaptive change to the structure of the screw rod 3, i.e., the screw 3, is composed of three parts, and the outer diameter of the first round bar 31 is larger than that of the second round bar 33, so that the space inside the barrel 1 along the inlet opening 11 and the outlet opening 12 can be made smaller and smaller (the space here is the internal storage space of the material inside the barrel 1), so that the friction between the material and the inner wall of the charging barrel 1 and between the material and the material can be increased, the friction has the characteristic of generating heat, so that the material can generate heat without being heated by a heating component, and the problem of increasing the load of the electric heating element in the prior art is finally solved;
in addition, because the shape of the screw blade 2 is fixed, and the shape of the screw 3 is a special-shaped piece, when the screw blade 2 is fixed on the screw 3, a certain problem exists by adopting the traditional welding or the fixed connection mode of the screw 3 and the like, namely, the installation is inconvenient or the connection is unstable, the processing technology of the screw 3 is relatively complex, and in order to solve the problem, the first round rod 31, the conical rod 32, the second round rod 33 and the screw blade 2 are fixedly connected by integral molding, so that the screw blade 2 and the screw 3 can be simply processed, the connection strength is high, and the service life is longer;
finally, set up the heat insulating sleeve and can play the purpose that prevents the heat loss in the feed cylinder 1.
It is worth noting that: the power source of the screw rod 3 can be selected from a motor, and the screw rod 3 is driven by the motor to rotate directionally.
Example 2:
in example 1, although the problem of reducing the load of the electric heating element can be solved, the amount of heat generated by friction is not so high, and in order to solve the existing problem, the present invention gives another preferable embodiment:
a screw blade 2 and a charging barrel 1 are in clearance fit with each other for a feeding system of an injection mold.
The working mode of the utility model is described as follows:
through adopting clearance fit setting between auger blade 2 and feed cylinder 1, can understand, because what adopt between auger blade 2 and the feed cylinder 1 is clearance fit, the clearance between auger blade 2 and the feed cylinder 1 is less promptly, when the material carries along auger blade 2's direction of rotation, along with the diminishing in space, and feed cylinder 1 is less with auger blade 2's clearance, thereby can crowd away the air in this space, thereby can make the effective contact surface between the material bigger, thereby the efficiency that the friction produced is higher.
It should be noted that the clearance fit here is obviously as small as possible during practical use, and in use, it is only necessary to ensure that the auger blade 2 does not interfere with the inner wall of the charging barrel 1 during rotation.
Example 3:
in example 1 or 2, although the problem of heat generation of the material itself is solved, the final purpose of the feeding system is to melt and stir the material uniformly, and then inject the material into the cavity formed by the fixed mold and the movable mold, if the pressure of the injected material is not enough, the material cannot fill the cavity, and finally the expected product cannot be formed, therefore, the melted material can be stably injected into the cavity, and whether the product can be effectively molded is determined, and in order to solve the problem, the utility model provides another preferable embodiment:
a feed system for injection molds, where the inner diameter at the opening of the cartridge 1 is tapered, as can be seen in fig. 2, is of a conical design.
The working mode of the utility model is as follows:
the inner diameter of the buckle of the charging barrel 1 is gradually reduced, so that the injection pressure of the feeding system can be improved, and the purpose of ensuring stable injection of materials into the cavity can be achieved.
Example 4:
in the above embodiment, the problem of preventing the material in the mold from flowing back into the barrel 1 should be considered, if no measures are taken to prevent this, the product cannot be effectively finished in the mold, the pressure of the cavity of the mold needs to be maintained during the molding process of the product, so that the molten plastic in the mold can fill the whole cavity, and the pressure of the feeding port 11 is lower than the pressure in the cavity, which is the case of material flowing back, and in order to solve this problem, another preferred embodiment is provided in the present invention:
a feeding system for an injection mold, further comprising a one-way flow guide 4 for preventing the material in a barrel 1 from flowing back from a discharge port 12 to a feed port 11, comprising a circular ring 41, a sealing ring 42 and a truncated cone 431, wherein: the circular ring 41 is sleeved on the first circular rod 31 and fixedly connected with the first circular rod 31; the sealing ring 42 is provided with a through hole 421, the aperture of the through hole 421 is larger than the outer diameter of the first round rod 31 and the inner diameter of the round ring 41, the first round rod 31 passes through the through hole 421, and the sealing ring 42 is sealed in the charging barrel 1 in a sliding manner; the cone frustum 431 is fixedly connected with the end part of the first round rod 31, a connecting hole 4311 is formed in the cone frustum 431, the connecting hole 4311 is selectively communicated with the through hole 421, the connecting hole 4311 is communicated with the discharge hole 12, and a gap is formed between the limiting part 43 and the charging barrel 1.
The working mode of the utility model is as follows:
through adopting ring 41, sealing ring 42 and circular truncated cone 431 solve this kind of problem, specifically do, when the material removes to the die cavity of mould, the material of removal can promote sealing ring 42 and move left, until with circular truncated cone 431 butt, at this moment, thereby the material can enter into discharge gate 12 through-hole 421 and enter into the die cavity at last, when the die cavity of mould is filled up, the material of die cavity can promote sealing ring 42 and move right, until sealing ring 42 and the mutual butt of ring 41, at this moment, because the external diameter of through-hole 421 is greater than the internal diameter of ring 41, therefore, sealing has been realized, reach the purpose that prevents the backward flow.
Example 5:
in the embodiment 1, although the purpose of improving the heat generation of the material can be achieved, in the actual operation process, if the upper and lower spaces of the auger blade 2 are asymmetric, the heat generation of the material in the auger blade 2 is not uniform, so that the material cannot be uniformly mixed under the stirring action of the auger blade 2, and finally, when the material entering the mold cavity is molded, cracks or sand holes appear on the surface of the product, in order to solve the problem, the utility model provides another preferred embodiment:
a feeding system for an injection mold is characterized in that a cone frustum 431, a screw rod 3 and a charging barrel 1 are coaxially arranged.
The working mode of the utility model is as follows:
through adopting the coaxial setting of circular cone 431, screw rod 3 and feed cylinder 1 thereby can reach and make the material produce heat in each position in auger blade 2 evenly and stir evenly so that do not influence the shaping of the interior product of mould.
Example 6:
in the case of no technical conflict, any permutation and combination in embodiments 1 to 5 is also included.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A feed system for an injection mold, comprising: feed cylinder (1), auger blade (2) and screw rod (3), wherein:
the device comprises a charging barrel (1), a feeding hole (11) is formed in the outer surface of the charging barrel (1), and a discharging hole (12) is formed in the opening of the charging barrel (1);
a screw (3) rotatably disposed within the barrel (1);
the auger blade (2) is fixedly arranged on the screw (3);
the method is characterized in that: the outer diameter of the screw (3) is gradually increased along the direction of the feed inlet and the discharge outlet.
2. A feed system for an injection mold in accordance with claim 1, wherein: the screw blade (2) and the charging barrel (1) are in clearance fit.
3. A feed system for an injection mould according to claim 1 or 2, characterised in that: the inner diameter of the discharge hole (12) of the charging barrel (1) is gradually reduced along the direction of the opening of the charging hole (11) of the charging barrel (1) and the charging barrel (1).
4. A feed system for an injection mold in accordance with claim 3, wherein: the material feeding device also comprises a one-way flow guide piece (4) for preventing the material in the charging barrel (1) from flowing back to the feeding hole (11) from the discharging hole (12).
5. A feed system for an injection mold in accordance with claim 4, wherein: the one-way flow guide piece (4) comprises a circular ring (41), a sealing ring (42) and a limiting piece (43), wherein:
the circular ring (41) is sleeved on the screw rod (3) and is fixedly connected with the screw rod (3);
the sealing ring (42) is provided with a through hole (421), the aperture of the through hole (421) is larger than the outer diameter of the screw (3) and the inner diameter of the circular ring (41), the screw (3) penetrates through the through hole (421), and the sealing ring (42) is sealed in the charging barrel (1) in a sliding manner;
the limiting part (43) is fixedly connected with the end part, close to the discharge hole (12), of the screw (3), a connecting hole (4311) is formed in the limiting part (43), the connecting hole (4311) is selectively communicated with the through hole (421), the connecting hole (4311) is communicated with the discharge hole (12), and a gap is formed between the limiting part (43) and the charging barrel (1).
6. A feed system for an injection mold in accordance with claim 5, wherein: the limiting piece (43) is a cone frustum (431), the cone frustum (431) is fixedly connected with the end portion, close to the discharge hole (12), of the screw rod (3), the outer diameter, close to the discharge hole (12), of the cone frustum (431) is the minimum outer diameter, the connecting hole (4311) is formed in the cone frustum (431), the taper of the cone frustum (431) is equal to that of an opening of the material barrel (1), and the cone frustum (431), the screw rod (3) and the material barrel (1) are coaxially arranged.
7. A feed system for an injection mold in accordance with claim 1, wherein: the screw (3) comprises a first round rod (31), a conical rod (32) and a second round rod (33), wherein: first round bar (31), conical rod (32) and second round bar (33) coaxial fixed setting in proper order, the external diameter of first round bar (31) is greater than the external diameter of second round bar (33), and first round bar (31) are close to discharge gate (12).
8. A feed system for an injection mold in accordance with claim 7, wherein: the first round rod (31), the conical rod (32), the second round rod (33) and the auger blade (2) are fixedly connected in an integrated forming mode through a casting process.
9. A feed system for an injection mold in accordance with claim 1, wherein: the charging barrel (1) is wrapped by a heat-insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238558.8U CN216884949U (en) | 2021-12-22 | 2021-12-22 | Feeding system for injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238558.8U CN216884949U (en) | 2021-12-22 | 2021-12-22 | Feeding system for injection mold |
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| CN216884949U true CN216884949U (en) | 2022-07-05 |
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| CN202123238558.8U Active CN216884949U (en) | 2021-12-22 | 2021-12-22 | Feeding system for injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674616A (en) * | 2022-11-04 | 2023-02-03 | 苏州大牌机械科技有限公司 | Adjustable speed injection molding machine based on intelligence control by temperature change |
-
2021
- 2021-12-22 CN CN202123238558.8U patent/CN216884949U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674616A (en) * | 2022-11-04 | 2023-02-03 | 苏州大牌机械科技有限公司 | Adjustable speed injection molding machine based on intelligence control by temperature change |
| CN115674616B (en) * | 2022-11-04 | 2024-01-05 | 苏州大牌机械科技有限公司 | Adjustable speed injection molding machine based on intelligent temperature control |
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