CN220008704U - Mould core-pulling and pulling mechanism - Google Patents

Abstract

The utility model discloses a core-pulling and pulling mechanism of a mold, which comprises the following components: the bottom plate, first push pedal and second push pedal can pile up and place, be the bottom plate from bottom to top respectively, second push pedal and first push pedal, the public mould is the column and is fixed in the bottom plate, the breach that can hold the elastic component has been seted up at the top of bottom plate, the elastic component is placed in the breach, the breach is stretched out at the top of elastic component, the elastic component can rebound after compressing, first shoulder can support the top surface of first push pedal, the second shoulder can support the countersunk bottom surface of countersunk through-hole, first push pedal, second push pedal and product mounting can be close to the bottom plate under linear pushing mechanism's drive, first push pedal, product mounting and product can keep away from the second push pedal under linear pushing mechanism's drive. The utility model has simple structure and high demoulding efficiency.

Description

Mould core-pulling and pulling mechanism

Technical Field

The utility model relates to a mold mechanism, in particular to a mold core-pulling and pulling mechanism.

Background

At present, a tubular product needs to be core-pulled after injection molding is finished so as to conveniently take down the product, but the product is easy to be stuck on a male die or a female die after injection molding is finished in the existing die, so that core pulling is difficult, the product is usually required to be manually core-pulled down, the efficiency is low, the product is easy to be damaged in the process of manually taking down the product, the reject ratio is increased, and the mass production is not facilitated.

Disclosure of Invention

In order to overcome the defects, the utility model provides a die core-pulling and pulling mechanism, which has the advantages of simple structure and high demolding efficiency.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a mold core pulling back mechanism comprising: the bottom plate, the first push plate and the second push plate can be stacked and placed, the bottom plate, the second push plate and the first push plate are respectively arranged from bottom to top, the male die is columnar and fixed on the bottom plate, a notch capable of containing the elastic piece is formed in the top of the bottom plate, the elastic piece is placed in the notch, the top of the elastic piece extends out of the notch, the elastic piece can rebound after compression, the two ends of the push-pull mechanism are respectively a first end and a second end, a first shaft shoulder is arranged at the end part of the first end of the push-pull mechanism, a second shaft shoulder is arranged at the second end of the push-pull mechanism, a third shaft shoulder is arranged at the middle part of the push-pull mechanism, a countersunk through hole is formed in the bottom plate, a first through hole with the same number as the male die and a second through hole capable of containing the first end of the push-pull mechanism are formed in the first push plate, the second push plate is provided with third through holes with the same number as the male die and fourth through holes capable of accommodating the second end of the push-pull mechanism, the first through holes and the third through holes are coaxial, the second through holes, the fourth through holes and the countersunk through holes are coaxial, the product fixing pieces are annular and have the same number as the male die, the inner diameters of the product fixing pieces are larger than the outer diameters of the male die, the product fixing pieces are fixed at the top of the first push plate, the product fixing pieces are sleeved on the male die, the injection molded product is cylindrical, the product is reversely buckled on the male die, the open end of the product is connected with the top end of the product fixing pieces, the male die can pass through the first through holes and the third through holes, the outer diameter of the first shaft shoulder is larger than the inner diameter of the second through holes, the outer diameter of the second shaft shoulder is larger than the minimum inner diameter of the countersunk through holes, the outer diameter of the third shaft shoulder is larger than the inner diameter of the second through holes, the female die can be reversely buckled on the male die under the driving of an external force and form a cavity capable of injection molding with the male die, the first push pedal of extrusion down can be under the drive of external force to the master model, the elastic component can compress under the extrusion of master model, the bottom plate, first push pedal and second push pedal can laminate under the extrusion of master model, the master model can keep away from the public mould under the drive of external force, the elastic component can rebound and with first push pedal, the second push pedal, product mounting and product push away from the bottom plate, the removal end of straight line pushing mechanism is connected to push-pull mechanism's second end, push-pull mechanism can reciprocate under straight line pushing mechanism's drive, first shoulder can support the top surface of first push pedal, the second shoulder can support the countersunk bottom surface of countersunk through-hole, first push pedal, second push pedal and product mounting can be close to the bottom plate under straight line pushing mechanism's drive, the third shoulder can support the bottom surface of first push pedal, product mounting and product can keep away from the second push pedal under straight line pushing mechanism's drive.

Optionally, the push-pull mechanism includes a first shaft body and a second shaft body, the outer diameter of the first shaft body is smaller than the outer diameter of the second shaft body, and the first shaft body and the second shaft body are fixedly connected through a first bolt.

Alternatively, the number of the male dies is two.

Alternatively, the elastic member is a polyurethane block.

Optionally, the linear pushing mechanism is an air cylinder, an air cylinder rod of the air cylinder is a moving end of the linear pushing mechanism, a threaded hole is formed in the bottom of the second shaft body, threads are formed in the air cylinder rod of the air cylinder, and the air cylinder rod of the air cylinder is in threaded connection with the threaded hole.

Optionally, the mold further comprises four guide posts, the four guide posts are fixed at four corners of the bottom plate, four first guide holes which can be connected with the four guide posts in a sliding manner are formed in four corners of the first push plate, four second guide holes which can be connected with the four guide posts in a sliding manner are formed in four corners of the second push plate, and four third guide holes which can be connected with the four guide posts in a sliding manner are formed in four corners of the female mold.

Alternatively, the product fixing member is fixed to the first push plate by four second bolts.

Alternatively, the male die is fixed to the base plate by eight third bolts.

The beneficial technical effects of the utility model are as follows: the mould pull back mechanism of loosing core includes: the device comprises a bottom plate, a first push plate, a second push plate, a male die, an elastic piece, a product fixing piece and a push-pull mechanism, wherein the number of the male die, the elastic piece, the product fixing piece and the push-pull mechanism is at least one, when the device is used, the linear push mechanism drives the first push plate, the second push plate and the product fixing piece to be close to the bottom plate until the bottom surface of the second push plate contacts the elastic piece, then a female die is reversely buckled on the male die and extrudes the first push plate under the driving of external force, the first push plate pushes the second push plate to extrude the elastic piece, the elastic piece is pressed and deformed until the bottom plate, the first push plate and the second push plate are attached, then an injection molding procedure is carried out, after injection molding, a female die is driven by external force to be far away from the male die, at the moment, the first push plate, the second push plate, the product fixing piece and the product are far away from the first push plate due to the resilience of the elastic piece, at the moment, the product is completely separated from the male die, and only by taking down the product after injection molding through manpower or other equipment. Has the advantages of simple structure and high demoulding efficiency.

Drawings

FIG. 1 is a perspective view of the complete machine of the present utility model;

FIG. 2 is a side cross-sectional view of the complete machine in a clamped state of the present utility model;

FIG. 3 is a side cross-sectional view of the complete machine with the master mold disengaged in accordance with the present utility model;

FIG. 4 is a side cross-sectional view of the machine with the first pusher plate, product fastener and product of the present utility model away from the second pusher plate;

FIG. 5 is a perspective view of the push-pull mechanism and first bolt of the present utility model;

FIG. 6 is an elevation view of the push-pull mechanism and first bolt of the present utility model;

wherein:

1. a bottom plate; 2. a first push plate; 3. a second push plate; 4. a male mold; 5. an elastic member; 6. a product fixing member; 7. a push-pull mechanism; 71. a first shaft body; 72. a second shaft body; 73. a first shoulder; 74. a second shoulder; 75. a third shoulder; 8. a first bolt; 9. a guide post; 10. a second bolt; 20. and (5) a product.

Detailed Description

In order that the manner in which the above recited features of the present utility model are attained and can be understood in detail, a more particular description of the utility model, briefly summarized below, may be had by reference to the appended drawings and examples, which are illustrated in their embodiments, but are not intended to limit the scope of the utility model.

The embodiment details the mold core-pulling mechanism according to the present utility model, as shown in fig. 1 to 6, which includes: the bottom plate 1, the first push plate 2, the second push plate 3, the public mould 4 with at least one quantity, the elastic piece 5, the product fixing piece 6 and the push-pull mechanism 7, the bottom plate 1, the first push plate 2 and the second push plate 3 can be stacked and placed, the bottom plate 1, the second push plate 3 and the first push plate 2 are respectively arranged from bottom to top, the public mould 4 is columnar and fixed on the bottom plate 1, a notch capable of containing the elastic piece 5 is formed at the top of the bottom plate 1, the elastic piece 5 is placed in the notch, the top of the elastic piece 5 extends out of the notch, the elastic piece 5 can rebound after compression, two ends of the push-pull mechanism 7 are respectively provided with a first end and a second end, the end part of the first end of the push-pull mechanism 7 is provided with a first shaft shoulder 73, the second end of the push-pull mechanism 7 is provided with a second shaft shoulder 74, the middle part of the push-pull mechanism 7 is provided with a third shaft shoulder 75, the bottom plate 1 is provided with a countersunk through hole, the first push plate 2 is provided with first through holes with the same number as the male die 4 and second through holes capable of containing the first ends of the push-pull mechanisms 7, the second push plate 3 is provided with third through holes with the same number as the male die 4 and fourth through holes capable of containing the second ends of the push-pull mechanisms 7, the first through holes and the third through holes are coaxial, the second through holes, the fourth through holes and the countersunk through holes are coaxial, the product fixing pieces 6 are annular and have the same number as the male die 4, the inner diameter of the product fixing pieces 6 is larger than the outer diameter of the male die 4, the product fixing pieces 6 are fixed on the top of the first push plate 2, the product fixing pieces 6 are sleeved on the male die 4, the product 20 after injection molding is in a cylinder shape, the opening end of the product 20 is connected with the top end of the product fixing pieces 6, the male die 4 can penetrate through the first through holes and the third through holes, the outer diameter of the first shaft shoulder 73 is larger than the inner diameter of the second shaft shoulder 74 is larger than the minimum inner diameter of the countersunk through holes, the external diameter of the third shaft shoulder 75 is larger than the internal diameter of the second through hole, the female die can be reversely buckled on the male die 4 under the driving of external force and form a cavity capable of injection molding with the male die 4, the female die can downwards extrude the first push plate 2 under the driving of external force, the elastic piece 5 can be compressed under the extrusion of the female die, the bottom plate 1, the first push plate 2 and the second push plate 3 can be attached under the extrusion of the female die, the female die can be driven by external force to be far away from the male die 4, the elastic piece 5 can rebound and push the first push plate 2, the second push plate 3, the product fixing piece 6 and the product 20 away from the bottom plate 1, the second end of the push-pull mechanism 7 is connected with the moving end of the linear push mechanism, the push-pull mechanism 7 can move up and down under the driving of the linear push mechanism, the second shaft shoulder 73 can abut against the top surface of the first push plate 2, the second shaft shoulder 74 can abut against the countersunk bottom surface of the countersunk through hole, the first push plate 2, the second push plate 3 and the product fixing piece 6 can be close to the bottom plate 1 under the driving of the linear push mechanism, the first shaft shoulder 75 can push the bottom surface 2 and the product fixing piece 6 can be far away from the product fixing piece 20 under the driving of the first push plate 2. When the push-pull mechanism is used, the push-pull mechanism 7 is pulled by the linear pushing mechanism, the first shaft shoulder 73 abuts against the top surface of the first push plate 2, the linear pushing mechanism drives the first push plate 2, the second push plate 3 and the product fixing piece 6 to be close to the bottom plate until the bottom surface of the second push plate 3 contacts the elastic piece 5, then the female die is reversely buckled on the male die 4 under the driving of external force and extrudes the first push plate 2, the first push plate 2 pushes the second push plate to extrude the elastic piece 3 to press the elastic piece 5, the elastic piece 5 is deformed under compression until the bottom plate 1, the first push plate 2 and the second push plate 3 are attached, and the second shaft shoulder 74 abuts against the countersunk bottom surface of the countersunk through hole. Then injection molding is carried out, the female die is driven by external force to be far away from the male die 4 after injection molding, at the moment, the first push plate 2, the second push plate 3, the product fixing piece 6 and the product 20 are far away from the bottom plate 1 due to resilience of the elastic piece 5, at the moment, the product 20 is partially separated from the male die 4, and core pulling of the product 20 is realized. Then the straight line pushing mechanism promotes push-pull mechanism, this moment the third shoulder 75 supports against the bottom surface of first push pedal 2, straight line pushing mechanism drives first push pedal 2, product mounting 6 and product 20 keep away from first push pedal 2, product 20 breaks away from public mould 4 completely this moment, only need take off the drawing of patterns of product 20 after the completion of moulding plastics through artifical or other equipment, because the operation of having saved the manual work and having loosed the core through resilience of elastic component 5 and the drive automation of straight line pushing mechanism of the drawing of patterns of product 20 is accomplished, the holistic drawing of patterns efficiency of product 20 has been improved, in addition because only used push-pull mechanism 7 a part just to realize the push-pull work of first push pedal 2, so the structure is also comparatively simple. Has the advantages of simple structure and high demoulding efficiency. The up-down direction in this embodiment is the up-down direction in fig. 2. The first end of the push-pull mechanism 7 in this embodiment is the upper side of the push-pull mechanism 7 in fig. 6, and the second end of the push-pull mechanism 7 is the lower side of the push-pull mechanism 7 in fig. 6.

Alternatively in this embodiment, the push-pull mechanism 7 includes a first shaft body 71 and a second shaft body 72, the outer diameter of the first shaft body 71 is smaller than the outer diameter of the second shaft body 72, and the first shaft body 71 and the second shaft body 72 are fixedly connected by a first bolt 8.

In this embodiment, the number of male dies 4 is optionally two.

Alternatively in this embodiment the resilient member 5 is a polyurethane block, in some alternative embodiments the resilient member 5 may also be a compression spring.

Alternatively, in this embodiment, the linear pushing mechanism is an air cylinder, the air cylinder rod of the air cylinder is the moving end of the linear pushing mechanism, the bottom of the second shaft body 72 is provided with a threaded hole, the air cylinder rod of the air cylinder is provided with threads, and the air cylinder rod of the air cylinder is in threaded connection with the threaded hole.

In this embodiment, optionally, the mold further includes four guide posts 9, the four guide posts 9 are fixed at four corners of the bottom plate 1, four first guide holes capable of being slidingly connected with the four guide posts 9 are formed at four corners of the first push plate 2, four second guide holes capable of being slidingly connected with the four guide posts 9 are formed at four corners of the second push plate 3, and four third guide holes capable of being slidingly connected with the four guide posts 9 are formed at four corners of the master mold. The guide post 9 can provide guidance for the up-and-down movement of the first push plate 2, the second push plate 3 and the female die, so that the movement accuracy is improved. In this embodiment four guide posts 9 are perpendicular to the base plate 1.

Alternatively in this embodiment the product holder 6 is fastened to the first push plate 2 by means of four second bolts 10.

In this embodiment, optionally, the male die 4 is fixed to the base plate 1 by eight third bolts.

The mold core-pulling and pulling mechanism in the embodiment has the advantages of simple structure and high demolding efficiency.

Claims (8)

1. A mold core pulling back mechanism, characterized by comprising: the bottom plate (1), the first push plate (2), the second push plate (3), the public mould (4) with at least one quantity, the elastic piece (5), the product fixing piece (6) and the push-pull mechanism (7), the bottom plate (1), the first push plate (2) and the second push plate (3) can be stacked and placed, the bottom plate (1), the second push plate (3) and the first push plate (2) are respectively arranged from bottom to top, the public mould (4) is columnar and fixed on the bottom plate (1), the top of the bottom plate (1) is provided with a notch capable of containing the elastic piece (5), the elastic piece (5) is placed in the notch, the top of the elastic piece (5) stretches out of the notch, the elastic piece (5) can rebound after compression, two ends of the push-pull mechanism (7) are respectively provided with a first end and a second end, the end of the first end of the push-pull mechanism (7) is provided with a first shaft shoulder (73), the second end of the push-pull mechanism (7) is provided with a second shaft shoulder (74), the middle part of the push-pull mechanism (7) is provided with a third shaft shoulder (75), the bottom plate (1) is provided with a through hole, the first push plate (2) and the first end (4) can be provided with the same quantity as the first through hole (7) and the first through hole (7) can be accommodated by the first through hole, the second push plate (3) is provided with third through holes with the same number as the male die (4) and fourth through holes capable of containing the second ends of the push-pull mechanisms (7), the first through holes and the third through holes are coaxial, the second through holes, the fourth through holes and the countersunk through holes are coaxial, the product fixing piece (6) is annular, the number of the product fixing piece is the same as that of the male die (4), the inner diameter of the product fixing piece (6) is larger than the outer diameter of the male die (4), the product fixing piece (6) is fixed at the top of the first push plate (2), the product fixing piece (6) is sleeved on the male die (4), the product (20) after injection molding is cylindrical, the open end of the product (20) is connected with the top end of the product fixing piece (6), the male die (4) can penetrate through the first through holes and the third through holes, the outer diameter of the first shaft shoulder (73) is larger than the inner diameter of the second through holes, the outer diameter of the second shaft shoulder (74) is larger than the minimum inner diameter of the countersunk through holes, the outer diameter of the third shaft shoulder (75) is larger than the outer diameter of the second through holes, the outer diameter of the second shaft (75) is larger than the second through holes, the second through holes can be pressed against the female die (2) and can be pressed against the female die (2) under the first push plate (2) and can be pressed against the first female die (2) and can, the first female die (2) and can be pressed against the first outer die (2), the female die can be kept away from public mould (4) under the drive of external force, elastic component (5) can rebound and with first push pedal (2), second push pedal (3), product mounting (6) and product (20) push away bottom plate (1), the mobile end of sharp pushing mechanism is connected to the second end of push-pull mechanism (7), push-pull mechanism (7) can reciprocate under the drive of sharp pushing mechanism, first shoulder (73) can support the top surface of first push pedal (2), second shoulder (74) can support the countersunk bottom surface of countersunk through-hole, first push pedal (2), second push pedal (3) and product mounting (6) can be close to bottom plate (1) under the drive of sharp pushing mechanism, third shoulder (75) can support the bottom surface of first push pedal (2), product mounting (6) and product (20) can keep away from second push pedal (3) under the drive of sharp pushing mechanism.

2. The mold core pulling back mechanism according to claim 1, wherein: the push-pull mechanism (7) comprises a first shaft body (71) and a second shaft body (72), the outer diameter of the first shaft body (71) is smaller than that of the second shaft body (72), and the first shaft body (71) and the second shaft body (72) are fixedly connected through a first bolt (8).

3. The mold core pulling back mechanism according to claim 1, wherein: the number of the male dies (4) is two.

4. The mold core pulling back mechanism according to claim 1, wherein: the elastic piece (5) is a polyurethane block.

5. The mold core pulling back mechanism according to claim 2, wherein: the linear pushing mechanism is an air cylinder, the air cylinder rod of the air cylinder is the moving end of the linear pushing mechanism, a threaded hole is formed in the bottom of the second shaft body (72), threads are formed in the air cylinder rod of the air cylinder, and the air cylinder rod of the air cylinder is in threaded connection with the threaded hole.

6. The mold core pulling back mechanism according to claim 1, wherein: the novel plastic mold is characterized by further comprising four guide posts (9), wherein the four guide posts (9) are fixed at four corners of the bottom plate (1), four first guide holes which can be connected with the four guide posts (9) in a sliding manner are formed in the four corners of the first push plate (2), four second guide holes which can be connected with the four guide posts (9) in a sliding manner are formed in the four corners of the second push plate (3), and four third guide holes which can be connected with the four guide posts (9) in a sliding manner are formed in the four corners of the female mold.

7. The mold core pulling back mechanism according to claim 1, wherein: the product fixing piece (6) is fixed on the first push plate (2) through four second bolts (10).

8. The mold core pulling back mechanism according to claim 1, wherein: the male die (4) is fixed on the bottom plate (1) through eight third bolts.