CN103909617A - Slide block exiting mechanism - Google Patents

Abstract

A sliding block withdrawal mechanism, the mechanism includes: an inlet, a base, a first top plate, a second top plate, a third top plate, a peeling block, a pull rod, a push rod, an elastic element, a positioning Beads and a slider, one end of the slider is placed in the male template of the male mold, and the end of the slider placed in the male template is in contact with the base, and one side of the slider corresponds to the insert The other side is in contact with the beam block correspondingly, and a sliding groove is arranged in the sliding block. The sliding block withdrawal mechanism of the present invention, by setting a sliding block, a peeling block, an elastic element and a positioning bead, when the mold is injection molding the first shot product, the mold is opened for the first time, the sliding block does not withdraw, and the male mold Rotate 180° and cooperate with the second injection mold to form the second injection product. The mold is opened for the second time, and the slider is withdrawn by the force of the peeling block. One shot product is not scratched.

Description

slider exit mechanism

【Technical field】

The invention relates to a sliding block withdrawing mechanism, in particular to a sliding block withdrawing mechanism applied in a two-color mold.

【Background technique】

Due to the development of modern technology, single material properties of mobile phone casings or engineering plastic parts can no longer meet the requirements and aesthetic requirements of these products. Two-color molds can use two materials of different colors to meet these design requirements. Two-color molds are two Two kinds of plastic materials are injected on the same injection molding machine, molded in two parts, and the product is only released once. In addition, in the production of plastic products, sometimes undercuts are set on the product. In order to prevent the undercut from leaving the mold core when the mold is opened, a slider ejection mechanism is usually installed in the two-color mold so that the product can be moved smoothly. demoulding.

Please refer to FIG. 1 , which is a schematic cross-sectional view of an existing slider withdrawal mechanism. The slider withdrawal mechanism includes a slider 10. One end of the slider 10 is in contact with the male template 11, and the other end is in contact with the female template 12. One side of the slider 10 is in contact with a bundle block 13, the bundle block 13 is connected with the mother template 12, and the other side of the slider 10 is connected with an insert 15, and one end of the insert 15 is in contact with the male die core 16 , the other end is in contact with the female mold core 17, and one side of the insert 15 participates in the molding of the product 30. In addition, a sliding groove 19 is provided in the sliding block 10, and an oblique pin 20 is arranged in the sliding groove 19. The oblique pin 20 The pin 20 is connected to the upper fixing plate 14 .

After the first shot female mold and the male mold cooperate to complete the injection molding of the first shot product 301, the mold is opened for the first time. At this time, the female mold remains still, and the male mold moves away from the female mold. Due to the oblique pin 20 Fixed on the upper fixing plate 14, so that the beam block 13 and the oblique pin 20 leave the slider 10, because the slider 10 loses the force of the beam block 13 and the oblique pin 20, the slider 10 moves away from the first shot product 301 , and the plunger 15 moves in the same direction as the slider 10; then, the male mold rotates 180° and cooperates with the second injection master mold to form the second shot product 302. During the second mold clamping process, the plunger 15 Moving toward the direction of the first shot product 301 , when the plunger 15 is in contact with the first shot product 301 , it is easy to scratch the first shot product 301 , thereby reducing the quality of the product 30 .

In view of this, it is necessary to provide a slider withdrawal mechanism, which can solve the problem that the first shot product of the two-color mold is scratched during the second clamping of the two-color mold in the above technology.

【Content of invention】

Therefore, the object of the present invention is to provide a slider withdrawal mechanism, which can solve the above-mentioned problem that the first shot product is scratched when the two-color mold is closed for the second time.

In order to achieve the above object, the slider withdrawal mechanism of the present invention is applied in a two-color mold, which includes a first injection master mold, a second injection master mold, two identical male molds, a bunch of blocks and at least one thimble , the slider exit mechanism consists of:

One insert, one end of the insert is placed in the male mold core of the male mold;

A base, which is placed in the male template of the male mold, the base is connected to the male template, and a through hole is provided in the base;

A slider, one end of the slider is placed in the male template of the male mold, and the end of the slider placed in the male template is in contact with the base, and one side of the slider is connected to the insert correspondingly, The other side is in corresponding contact with the beam block, and a sliding groove is provided in the sliding block, and the sliding groove communicates with the through hole;

An elastic element, one end of the elastic element is placed in the slider, and the other end is in contact with the male template of the male mold;

A positioning bead, which is placed on one side of the elastic element, one end of the positioning bead is in contact with the male template of the male mold, and the other end is in corresponding contact with the slider;

A first top plate, the first top plate is placed on the male template side of the male mold;

a second top plate, the second top plate is in contact with the first top plate;

a third top board connected to the second top board;

A peeling block, one end of the peeling block is connected to the first top plate, the other end is placed in the sliding groove, and the end of the peeling block placed in the sliding groove is in corresponding contact with the slider;

a tie rod, one end of which is correspondingly placed in the first top plate, and the other end is placed in the third top plate; and

A push rod, one end of which is in contact with the first top plate.

Preferably, a groove is provided on the slider, and one end of the positioning bead is correspondingly placed in the groove.

Preferably, the elastic element is in a compressed state.

Preferably, the elastic element is a spring.

Preferably, one side of the first top plate is provided with an escape hole, the pull rod is placed in the escape hole, and one end of the escape hole is placed in the second top plate, and the other end is placed in the second top plate. Inside the three top panels.

Preferably, the escape hole is T-shaped.

Preferably, the end of the peeling block in contact with the sliding block is an inclined plane.

Compared with the prior art, the slider withdrawal mechanism of the present invention, by setting a slider, a stripping block, an elastic element and a positioning bead, when the mold is injection molding the first shot product, the mold is opened for the first time, The slider does not exit, the male mold rotates 180° and cooperates with the second injection master mold to form the second shot product, the mold is opened for the second time, and the slider is withdrawn by the force of the peeling block. The slider exit mechanism makes the two-color mold The first shot product will not be scratched during the second mold clamping.

【Description of drawings】

FIG. 1 is a schematic cross-sectional view of a conventional sliding block ejection mechanism.

FIG. 2 is a schematic cross-sectional view of the sliding block ejection mechanism of the present invention when the mold is closed.

FIG. 3 shows a schematic cross-sectional view of the first mold opening of the sliding block ejection mechanism of the present invention.

FIG. 4 is a schematic cross-sectional view of the second mold opening of the sliding block withdrawal mechanism of the present invention.

【Detailed ways】

Please refer to Fig. 2, Fig. 3 and Fig. 4, wherein Fig. 2 is a schematic cross-sectional view of the slide block withdrawal mechanism of the present invention when closing the mold, Fig. 3 is a schematic cross-sectional view of the first mold opening of the slide block withdrawal mechanism of the present invention, and Fig. 4 It is a schematic cross-sectional view of the second mold opening of the slider ejection mechanism of the present invention.

The sliding block ejection mechanism of the present invention is applied to a two-color mold. The two-color mold includes a first injection master mold, a second injection master mold, two identical male molds, a bunch of blocks 100 and at least one thimble 101. In an embodiment, the slider withdrawal mechanism includes:

An inlet 102, one end of the inlet 102 is placed in the male mold core 103 of the male mold;

A base 115, the base 115 is placed in the male template 116 of the male mold, and the base 115 is connected with the male template 116, and a through hole 117 is provided in the base 115;

A slide block 104, one end of the slide block 104 is placed in the male template 116 of the male die, and the end of the slide block 104 placed in the male template 116 is in contact with the base 115, and one side of the slide block 104 is in contact with the base 115. The inserts 102 are correspondingly connected, and the other side is in corresponding contact with the beam block 100, and a sliding groove 105 is provided in the sliding block 104, and the sliding groove 105 communicates with the through hole 117;

An elastic element 106, one end of the elastic element 106 is placed in the slide block 104, and the other end is in contact with the male template 116 of the male mold. In this embodiment, the elastic element 106 is in a compressed state, and the elastic element 106 is a spring;

A positioning bead 107, which is placed on one side of the elastic element 106, one end of the positioning bead 107 is in contact with the male template 116 of the male mold, and the other end is in contact with the slider 104 correspondingly, in this embodiment , the slider 104 is provided with a groove 118, and one end of the positioning bead 107 is correspondingly placed in the groove 118;

A first top plate 108, the first top plate 108 is placed on the male template 116 side of the male mold, in this embodiment, one side of the first top plate 108 is provided with an air-avoiding hole 114, and the air-avoiding hole 114 is in the form of T-shaped, the pull rod 112 is placed in the escape hole 114, and one end of the escape hole 114 is placed in the second top plate 109, and the other end is placed in the third top plate 110;

a second top plate 109, the second top plate 109 is in contact with the first top plate 108;

A third top board 110, the third top board 110 is connected with the second top board 109;

A stripping block 111, one end of the stripping block 111 is connected to the first top plate 108, the other end is placed in the sliding groove 105, and the end of the stripping block 111 placed in the sliding groove 105 corresponds to the sliding block 104 In this embodiment, the end of the stripping block 111 in contact with the slider 104 is an inclined plane;

A pull rod 112, one end of the pull rod 112 is correspondingly placed in the first top plate 108, and the other end is placed in the third top plate 110; and

A push rod 113 , one end of the push rod 113 is in contact with the first top plate 108 .

In this embodiment, please refer to Fig. 3, the process of the first mold opening of the slide block withdrawal mechanism is: after the injection molding of the first shot product 181 is completed, the first shot female mold does not move, and the male mold moves away from the first shot. The direction of the shot master mold moves, because the first mold opening ejector pin 113 does not move, so the relative position of the first top plate 108 and the second top plate 109 remains unchanged, and the slider 104 also remains motionless. In addition, because the beam block 100 Separated from the slide block 104 and the elastic element 106 is in a compressed state, the slide block 104 is kept still by the force of the elastic element 106 and the positioning beads 107, and the insert 102 is connected with the slide block 104, and the insert 102 remains stationary, and then After the male mold is rotated by 180°, it is mold-closed with the second injection female mold, and the second injection product 182 is injection-molded.

In this embodiment, please refer to Fig. 4, the process of the second mold opening of the slide block withdrawal mechanism is: after the second shot product 182 is completed, the male mold moves away from the second shot female mold, and the slide block 104 Separated from the bundle block 100, the slide block 104 is no longer affected by the bundle block 100. At this time, the ejector rod 113 moves toward the direction of the male mold core 103, and the first top plate 108 interacts with the ejector rod 113 due to the force of the ejector rod 113. Movement in the same direction, because the stripping block 111 is connected with the first top plate 108, the first top plate 108 drives the stripping block 111 to move in the same direction, because the contact surface of the stripping block 111 and the slider 104 is an inclined surface, the slider 104 is subjected to the stripping block The active force of the 111 inclined plane moves away from the direction of the product 18, and because the insert 102 is connected with the slide block 104, the slide block 104 drives the insert 102 to move in the same direction, and the insert 102 is separated from the product 18. In addition, the pull rod 112 and the product 18 are separated. The first top plate 108 is connected, and the first top plate 108 drives the pull rod 112 to move in the same direction. Because the escape hole 114 is T-shaped, the pull rod 112 will be blocked by the second top plate 109 during the movement. At this time, the push rod 113 continues to move toward the product. 18 direction movement, the pull rod 112 pulls the second top plate 109 and the third top plate 110 to move in the same direction, since the thimble 101 is fixed on the second top plate 109, the thimble 101 is driven by the second top plate 109 to move the product 18 away from the male mold core 103 Movement, so that the product 18 is demoulded smoothly, then, the mold is closed, and the next injection molding product 18 is started.

Compared with the prior art, the slide block withdrawal mechanism of the present invention, by setting a slide block 104, a peeling block 111, an elastic element 106 and a positioning bead 107, when the two-color mold is opened for the first time, the slide block 104 is subjected to The active force of the elastic element 106 and the positioning bead 107 does not exit, the male mold rotates 180° and cooperates with the second injection female mold to form the second injection product 182, and then the two-color mold is opened for the second time, and the slider 104 is subjected to the force of the peeling block 111 Active force exits, and the slide block exit mechanism prevents the first shot product 181 from being scratched when the two-color mold is closed for the second time.

Claims (7)

1. A slide block exit mechanism, applied in a two-color mold, the two-color mold includes a first injection master mold, a second injection master mold, two identical male molds, a bunch of blocks and at least one thimble, characterized in that , the slider exit mechanism consists of: One insert, one end of the insert is placed in the male mold core of the male mold; A base, which is placed in the male template of the male mold, the base is connected to the male template, and a through hole is provided in the base; A slider, one end of the slider is placed in the male template of the male mold, and the end of the slider placed in the male template is in contact with the base, and one side of the slider is connected to the insert correspondingly, The other side is in corresponding contact with the beam block, and a sliding groove is provided in the sliding block, and the sliding groove communicates with the through hole; An elastic element, one end of the elastic element is placed in the slider, and the other end is in contact with the male template of the male mold; A positioning bead, which is placed on one side of the elastic element, one end of the positioning bead is in contact with the male template of the male mold, and the other end is in corresponding contact with the slider; A first top plate, the first top plate is placed on the male template side of the male mold; a second top plate, the second top plate is in contact with the first top plate; a third top board connected to the second top board; A peeling block, one end of the peeling block is connected to the first top plate, the other end is placed in the sliding groove, and the end of the peeling block placed in the sliding groove is in corresponding contact with the slider; a tie rod, one end of which is correspondingly placed in the first top plate, and the other end is placed in the third top plate; and A push rod, one end of which is in contact with the first top plate. 2 . The sliding block withdrawal mechanism according to claim 1 , wherein a groove is provided on the sliding block, and one end of the positioning bead is correspondingly placed in the groove. 3 . 3. The slider withdrawal mechanism according to claim 1, wherein the elastic element is in a compressed state. 4. The sliding block withdrawal mechanism according to claim 1, wherein the elastic element is a spring. 5. The slider withdrawing mechanism according to claim 1, wherein one side of the first top plate is provided with an escape hole, the pull rod is placed in the escape hole, and one end of the escape hole is placed In the second top board, the other end is placed in the third top board. 6 . The sliding block withdrawal mechanism according to claim 5 , wherein the escape hole is T-shaped. 7 . 7 . The sliding block withdrawal mechanism according to claim 1 , wherein the end of the stripping block in contact with the sliding block forms an inclined plane. 7 .