CN211307162U

CN211307162U - Continuous injection mould-opening-free three-plate injection molding machine

Info

Publication number: CN211307162U
Application number: CN201922124396.1U
Authority: CN
Inventors: 张建群; 杨如方; 戴强
Original assignee: Shandong Tongjia Intelligent Equipment Co ltd
Current assignee: Shandong Tongjia Intelligent Equipment Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-08-21
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a continuous injection mould-free three-plate injection moulding machine, which comprises a tail plate, a movable mould plate, a fixed mould plate and an injection mould structure, wherein an injection mould is arranged between the movable mould plate and the fixed mould plate, it is characterized in that the injection mold comprises a fixed mold and a movable mold, a double-station reversing mold core is arranged in the fixed mold and the movable mold, the fixed mold capable of reciprocating is arranged in a penetrating way along the direction vertical to the axis of the fixed mold, duplex position switching-over mold core including two switching-over mold cores that set up side by side, still be provided with the ejecting hydro-cylinder that is used for ejecting goods on the movable mould board, the beneficial effects of the utility model are that: the double-station reversing mold cores are adopted, in the process of ejecting and discharging materials from one station, the reversing mold core of the other station performs the injection molding process, the process time is greatly shortened, particularly, the problems that the conventional product is high in energy consumption and high in equipment requirement due to repeated unlocking and locking of a movable template during ejection are solved.

Description

Continuous injection mould-opening-free three-plate injection molding machine

The technical field is as follows:

the utility model belongs to the technical field of injection molding machine equipment, more specifically relate to a mould opening-free three-plate injection molding machine moulds plastics in succession.

Background art:

the injection molding machine is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, the working principle of the injection molding machine is similar to that of an injection syringe for injection, the plasticized plastic in a molten state, namely a viscous state, is injected into a closed die cavity by means of the thrust of a screw or a plunger, and the products are obtained after solidification and shaping. The injection molding machine can mold plastic products with complex shapes, precise sizes or compact textures with metal inserts in one step, and is widely applied to various fields of national defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, cultural and educational sanitation and daily life of people.

The three-plate injection molding machine is provided with three templates which are respectively as follows in sequence: fixed plate, movable plate and tailboard. The two halves of the mould are respectively arranged on the fixed mould plate and the movable mould plate, and the bending and extending of the bending arm mechanism realize the movement of the movable mould plate back and forth, so that the mould can be opened and closed.

That is to say, each product is prepared by bending and extending the arm bending mechanism to complete mold locking, injection molding and mold opening, and the product molding mode of the traditional common injection molding machine comprises injection, cooling, mold opening, jacking and mold closing. The action is complex and the forming period is slow.

The invention content is as follows:

for solving the problem, overcome prior art not enough, the utility model provides a change mould structure on ordinary equipment realizes exempting from the die sinking and gets goods, can effectual solution action complicacy, the problem that shaping cycle is slow and production efficiency is low.

The utility model provides a concrete technical scheme of above-mentioned technical problem does: continuous moulding plastics exempt from die sinking three-plate injection molding machine, including tailboard, movable mould board, fixed die plate and injection structure, be provided with injection mold between movable mould board and the fixed die plate, its characterized in that injection mold includes cover half and movable mould, is provided with duplex position switching-over mold core in cover half and the movable mould, wears to establish the cover half that can reciprocating motion along the perpendicular to cover half axle center direction, duplex position switching-over mold core including two switching-over mold cores that set up side by side, still be provided with the ejecting hydro-cylinder that is used for ejecting goods on the movable mould board.

Furthermore, the reversing mold core is adjacently provided with an ejection cavity and an injection molding cavity which are mutually independent along the axis direction.

Further, the injection molding cavity set to the open structural style of one end, the intracavity of moulding plastics is provided with the guide bar of predetermineeing quantity along the horizontal direction, and the intracavity of moulding plastics is provided with sub-movable mould through sliding connection, the tip of guide bar is provided with the structure of expanding, and the tip cover of guide bar is equipped with reset spring, and the guide bar is worn to establish in sub-movable mould, and sub-movable mould outside end is provided with the recess of being connected with reset spring block, and sub-movable mould's axle center is provided with boss and runner, and the outside terminal surface of boss is unanimous with the side terminal surface of switching-over mold core, and the discharge gate has.

Furthermore, an ejector plate is arranged in the ejection cavity through sliding connection, a long ejector rod and a short ejector rod which are different in length are arranged on the inner side of the ejector plate along the horizontal direction, the long ejector rod penetrates through the partition plate to be matched with the sub-movable mold, and a product ejection structure is further arranged on the partition plate of the ejection cavity and the injection molding cavity.

Further, the ejecting structure of goods includes the reference column, and the roof is worn to be equipped with in the reference column outside, and the inboard of roof is provided with the spring, and the outside of roof is provided with the limiting plate, and the roof is provided with the thimble along the axis direction, and the product cooperation in baffle and the chamber of moulding plastics is worn to establish by the thimble, roof and short ejector pin clearance fit.

Furthermore, the upper end surface of the fixed die is provided with a positioning oil cylinder, the front end of the positioning oil cylinder is provided with a pouring gate for positioning the movable sub-die and a conical positioning block concentric with the central pouring gate of the fixed die, the upper end surface of the movable die is further provided with a reversing motor, and the reversing motor is matched with a rack arranged on the upper end surface of the reversing die core in a meshing manner through a transition gear.

Further, a product sliding plate is further arranged below the discharge hole, and a conveying belt is arranged below the product sliding plate.

The utility model has the advantages that: the double-station reversing mold core is adopted, in the process of ejecting and discharging materials from one station, the reversing mold core on the other station performs an injection molding process, the process time is greatly shortened, and the problems of high energy consumption and high equipment requirement caused by repeated mold opening and locking of a movable mold plate of a conventional product due to mold opening and mold locking for ejecting are particularly avoided.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the reverse mold core of the present invention;

FIG. 3 is a schematic cross-sectional view of another embodiment of the reverse mold core of the present invention;

FIG. 4 is a perspective view of the reversing mold core of the present invention; in the drawings:

1. fixing a mold; 2. a reversing motor; 3. positioning the oil cylinder; 4. moving the mold; 5. a motor gear; 6. a transition gear; 7. a reversing mold core; 8. a rack; 9. a sub-movable mold; 10. a guide bar; 11. a conveyor belt; 12. a product sled; 13. ejecting an oil cylinder; 14. ejecting an oil cylinder seat; 15. a tail plate; 16. moving the template; 17. fixing a template; 18. an injection molding structure; 111. ejecting the cavity; 112. an injection molding cavity; 113. a boss; 114. a gate; 115. a groove; 116. an enlarged structure; 117. a return spring; 118. a thimble; 119. a top plate; 120. a limiting plate; 121. a positioning column; 122. a long ejector pin; 123. a short ejector pin; 124. and ejecting the plate.

The specific implementation mode is as follows:

specific details are set forth in the description of the invention only to provide a thorough understanding of the embodiments of the invention, but as one skilled in the art will appreciate, the practice of the invention is not limited to these details. In other instances, well-known structures and functions have not been described or shown in detail to avoid obscuring the points of the embodiments of the present invention. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses a concrete implementation mode: continuous injection molding exempts from mould unloading three-plate injection molding machine, including tailboard 15, movable mould board 16, fixed die plate 17 and injection structure 18, be provided with injection mold between movable mould board 16 and the fixed die plate 17, its characterized in that injection mold includes cover half 1 and movable mould 4, is provided with duplex position switching-over mold core in cover half 1 and the movable mould 4, wears to establish the duplex position switching-over mold core that can reciprocating motion along the direction of perpendicular to cover half 1 axle center, duplex position switching-over mold core including two switching-over mold cores 7 that set up side by side, still be provided with the ejecting hydro-cylinder 13 that is used for ejecting goods on the movable mould board.

The upper end surface of the fixed die 1 is provided with a positioning oil cylinder 3, the front end of the positioning oil cylinder 3 is provided with a pouring gate 114 for positioning the sub-movable die 9 and a conical positioning block concentric with the pouring gate 114 of the fixed die 1, the upper end surface of the movable die 4 is further provided with a reversing motor 2, and the reversing motor 2 is matched with a rack 8 arranged on the upper end surface of the reversing die core 7 in a meshing mode through an excessive gear 6. A product sliding plate 12 is arranged below the discharge port, and a conveying belt 11 is arranged below the product sliding plate 12.

The reversing mold core 7 is adjacently provided with an ejection cavity 111 and an injection molding cavity 112 which are mutually independent along the axial direction. The injection molding cavity 112 is set to be an open structural form of one end, a preset number of guide rods 10 are arranged in the injection molding cavity 112 along the horizontal direction, the sub-moving mold 9 is arranged in the injection molding cavity 112 through sliding connection, an expanding structure 116 is arranged at the end part of each guide rod 10, a return spring 117 is sleeved at the end part of each guide rod 10, each guide rod 10 is arranged in the sub-moving mold 9 in a penetrating mode, a groove 115 connected with the return spring 117 in a clamping mode is arranged at the outer side end of the sub-moving mold 9, a boss 113 and a pouring gate 114 are arranged at the axis of the sub-moving mold 9, the end face of the outer side of the boss 113 is consistent with the side end face of the reversing.

Furthermore, an ejector plate 124 is arranged in the ejection cavity 111 in a sliding connection manner, a long ejector rod 122 and a short ejector rod 123 which are different in length are arranged on the inner side of the ejector plate 124 along the horizontal direction, the long ejector rod 122 penetrates through a partition plate to be matched with the movable sub-mold 9, and a product ejection structure is further arranged on the partition plates of the ejection cavity 111 and the injection molding cavity 112. The product ejection structure comprises a positioning column 121, a top plate 119 penetrates through the outer side of the positioning column 121, a spring is arranged on the inner side of the top plate 119, a limiting plate 120 is arranged on the outer side of the top plate 119, a thimble 118 is arranged on the top plate 119 along the axis direction, the thimble 118 penetrates through a partition plate to be matched with a product of the injection molding cavity 112, and the top plate 119 is in clearance fit with a short ejection rod 123.

When in use, the method comprises the following specific operations: the continuous injection mold-opening-free three-plate injection molding machine adopts a double-station reversing mold core, realizes continuous injection molding and continuous ejection and product taking without mold opening, shortens the molding period and improves the working efficiency.

Furthermore, the product taking device without opening the mold is alternatively operated by a reversing mold core with double stations, and the mold is opened and ejected out of the sub-movable mold by the outside of the mold.

Further, the double-station reversing action is carried out in a reciprocating way by matching a reversing motor 2 with a rack 8 arranged on the upper end surface of a reversing mold core 7 in a meshing way through a transition gear 6, the action in place is controlled by a position switch, and then the positioning oil cylinder 3 with a conical positioning block at the front end is used for accurately positioning, so that the sprue of a sub-movable mold 9 is ensured to be concentric with the central sprue of a main mold.

Further, two ejection oil cylinders 13 are respectively distributed on two sides of the movable die plate 16 of the equipment, after the reversing die core 7 is in place, the ejection oil cylinders 13 push the ejection plate 124 to move, the ejector rods on the ejection plate 124 have two lengths, the long ejection rod 122 firstly pushes the sub-movable die 9 to move, the sub-movable die is firstly separated from a product, the top plate 119 is in clearance fit with the short ejection rod 123, and the product is ejected by the short ejection rod 123 after moving for a certain distance.

Further, the sub-moving die 9 can slide on the guide rod 10, the end of the guide rod 10 is provided with an expansion structure 116, the end of the guide rod 10 is sleeved with a return spring 117, after the ejection cylinder retracts, the sub-moving die 9 automatically returns by the spring, and meanwhile, the ejector pin 118 returns by the spring; the product drops through the discharge opening to a product slide 12 and is transferred by a conveyor belt 11.

The double-station reversing mold core is adopted, and in the process of ejecting and discharging materials through the steps, the reversing mold core at the other station performs an injection molding process, so that the process time is greatly shortened, and the problems that the conventional product movable mold plate 16 is opened and locked for ejection, the energy consumption is high, and the requirement on equipment for repeated unlocking and locking is high are avoided;

further, the axis of the sub-moving mold 9 is provided with a boss 113 and a gate 114, and the outer side end face of the boss 113 is consistent with the side end face of the reversing mold core 7, so that the rebound of the sub-moving mold 9 caused by high-pressure injection molding is avoided, and the injection airtightness and stability of the gate 114 are improved.

The bottom of the reversing mold core 7, the fixed mold 1 and the movable mold 4 are in rolling friction, and a nylon damping block is arranged after reversing is in place, so that stable operation of the equipment is ensured.

Particularly, the cooling water mounting holes of the two stations of the reversing mold core 7 are arranged on the outer sides and are not communicated with each other, so that the lengths of paths through which the cooling water passes are consistent, and the cooling effect is consistent.

Claims

1. The utility model provides a mould unloading three-plate injection molding machine exempts from in continuous moulding plastics, includes tailboard (15), movable mould board (16), fixed die plate (17) and injection structure (18), is provided with injection mold between movable mould board (16) and fixed die plate (17), its characterized in that injection mold includes cover half (1) and movable mould (4), is provided with duplex position switching-over mold core in cover half (1) and movable mould (4), wears to establish the duplex position switching-over mold core that can reciprocating motion along perpendicular to cover half (1) axle center direction, duplex position switching-over mold core including two switching-over mold cores (7) that set up side by side, still be provided with ejecting hydro-cylinder (13) that are used for ejecting goods on movable mould board (16).

2. The continuous injection mould-free three-plate injection molding machine according to claim 1, wherein the reversing mold core (7) is provided with an ejection cavity (111) and an injection cavity (112) which are mutually independent and adjacent along the axial direction.

3. The continuous injection mould-free three-plate injection molding machine according to claim 2, wherein the injection molding cavity (112) is configured in a structure with one open end, a preset number of guide rods (10) are arranged in the injection molding cavity (112) along the horizontal direction, a sub-movable mould (9) is arranged in the injection molding cavity (112) through sliding connection, the end part of the guide rod (10) is provided with an expansion structure (116), the end part of the guide rod (10) is sleeved with a return spring (117), the guide rod (10) penetrates through the movable sub-die (9), the outer side end of the movable sub-die (9) is provided with a groove (115) which is connected with the return spring (117) in a clamping manner, the axis of the movable sub-die (9) is provided with a boss (113) and a pouring gate (114), the outer side end face of the boss (113) is consistent with the side end face of the reversing die core (7), and the bottom of the injection molding cavity (112) is provided with a discharge hole.

4. The continuous injection mould-free three-plate injection molding machine according to claim 2, wherein an ejector plate (124) is arranged in the ejector cavity (111) through sliding connection, a long ejector rod (122) and a short ejector rod (123) with different lengths are arranged on the inner side of the ejector plate (124) along the horizontal direction, the long ejector rod (122) penetrates through a partition plate to be matched with the movable sub-mold (9), and a product ejection structure is further arranged on the partition plate of the ejector cavity (111) and the partition plate of the injection cavity (112).

5. The continuous injection mould-opening-free three-plate injection molding machine according to claim 4, wherein the product ejection structure comprises a positioning column (121), a top plate (119) penetrates through the outer side of the positioning column (121), a spring is arranged on the inner side of the top plate (119), a limiting plate (120) is arranged on the outer side of the top plate (119), a thimble (118) is arranged on the top plate (119) along the axis direction, the thimble (118) penetrates through a partition plate to be matched with a product of the injection molding cavity (112), and the top plate (119) is in clearance fit with the short ejection rod (123).

6. The continuous injection mould-opening-free three-plate injection molding machine according to any one of claims 1 to 5, wherein a positioning oil cylinder (3) is arranged on the upper end surface of the fixed mould (1), a conical positioning block concentric with a sprue (114) for positioning the movable sub-mould (9) and a central sprue (114) of the fixed mould (1) is arranged at the front end of the positioning oil cylinder (3), a reversing motor (2) is further arranged on the upper end surface of the movable mould (4), and the reversing motor (2) is matched with a rack (8) arranged on the upper end surface of the reversing mould core (7) in a meshing manner through a transition gear (6).

7. The continuous injection mould-free three-plate injection molding machine according to claim 3, wherein a product sliding plate (12) is further arranged below the discharge port, and a conveying belt (11) is arranged below the product sliding plate (12).