CN114801054A

CN114801054A - Structure for preventing product from drawing die

Info

Publication number: CN114801054A
Application number: CN202110125801.0A
Authority: CN
Inventors: 金顺; 王振名
Original assignee: Suzhou Mitac Precision Technology Co Ltd
Current assignee: Suzhou Mitac Precision Technology Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-07-29

Abstract

The invention relates to the technical field of injection molds, in particular to a structure for preventing a product from being drawn. The structure for preventing the product drawing die comprises an inclined pin, wherein a boss is arranged on the inclined pin, a plurality of grooves are concavely arranged on the product, each groove is provided with a first groove section and a second groove section, the boss is clamped in the first groove section, the width of the first groove section is gradually widened along the withdrawing direction of the inclined pin, and the width of the second groove section is the same along the withdrawing direction of the inclined pin. The product drawing preventing structure can prevent a product from sticking the mold and simultaneously does not influence the exit of the taper pin.

Description

Structure for preventing product from drawing die

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of injection molds, in particular to a structure for preventing a product from being drawn.

[ background of the invention ]

When a product is injection molded, if the product cannot be separated from a mold cavity normally, the edge or other parts of the product can be subjected to the resistance inside the mold cavity to form a drawing die, and the drawing die product can be damaged by drawing.

Referring to fig. 1, fig. 1 is a schematic view illustrating a drawing die product. The product 10 is a back shell of a notebook computer, glue is directly fed from a female mold when the product 10 is molded, the part of the product 10 in a male mold is a plane without structure, an inclined pin structure is arranged at the part, and the product 10 is easily adhered to the female mold after the mold is opened. In the prior art, in order to overcome the problem that the product 10 sticks to the master die, grooves are designed on the plane of the product 10, however, although the grooves on the plane of the product 10 avoid the die drawing of the product 10, the grooves can affect the withdrawing of the taper pin.

In view of the above, it is necessary to develop a structure for preventing the product from being drawn, so as to solve the problems of the drawing and the influence on the withdrawal of the taper pin.

[ summary of the invention ]

Therefore, the invention aims to provide a product drawing preventing structure which can prevent a product from sticking the mold and simultaneously does not influence the withdrawal of a taper pin.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a prevent structure of product drawing die, its includes the taper pin, be equipped with the boss on the taper pin, the product is gone up the concave several recesses that are equipped with, and each this recess has first groove section and second groove section, the boss card is in first groove section, the width of first groove section widens gradually along the direction that the taper pin withdrawed from, the width of second groove section is the same along the direction that the taper pin withdrawed from.

Further, the mold opening direction is taken as the vertical direction, and two side walls of the groove are inclined to the vertical direction.

Further, the cross-section of the groove is dovetail-shaped.

Further, the taper pin comprises a head part and a rod part, the boss is arranged on the head part, and one end of the rod part is fixed in the head part.

Furthermore, the head is provided with a holding groove, one end of the rod part is a convex block, and the convex block is clamped in the holding groove.

Furthermore, the cross sections of the accommodating groove and the bump are T-shaped.

Compared with the prior art, the product drawing die structure has the advantages that the groove is formed in the product, the boss is arranged on the inclined pin and clamped in the groove, the die is opened after the die is closed to form the product, the product can be pulled by the boss to prevent the product from sticking to the die, the inclined pin is withdrawn backwards when the inclined pin ejects the product, the boss is gradually separated from the groove, and then the product is taken out. Therefore, the structure for preventing the product from being drawn can prevent the product from being stuck on the mold and simultaneously does not influence the exit of the angle pin.

[ description of the drawings ]

Fig. 1 shows a schematic view of a die product.

Fig. 2 is a schematic perspective view illustrating a structure of the product drawing prevention die of the present invention.

Fig. 3 is an angle exploded view of the structure of the product drawing die of the present invention.

FIG. 4 is another schematic perspective view of the anti-stretch-draw structure of the present invention.

Fig. 5 is a sectional view showing the structure of the product drawing preventing die of the present invention.

Fig. 6 is a partially enlarged view of fig. 5.

FIG. 7 is a schematic view illustrating the structure of the product drawing die of the present invention when the angle pin is withdrawn.

FIG. 8 is a sectional view showing the structure of the product drawing die according to the present invention, when the taper pin is withdrawn.

Fig. 9 is a partially enlarged view of fig. 8.

[ detailed description ] embodiments

For a further understanding of the objects, technical effects and technical means of the present invention, reference will now be made in detail to the following description taken in conjunction with the accompanying drawings.

Fig. 2 to 4 are a schematic perspective view, an exploded view at one angle, and an exploded view at another angle respectively illustrating the structure of the product drawing mold of the present invention. The structure of the product drawing die comprises an inclined pin 100, wherein a boss 101 is arranged on the inclined pin 100, a plurality of grooves 11 are concavely arranged on the product 10, each groove 11 is provided with a first groove section 12 and a second groove section 13, the boss 101 is clamped in the first groove section 12, the width of the first groove section 12 is gradually widened along the withdrawing direction of the inclined pin 100, the width of the second groove section 13 is the same along the withdrawing direction of the inclined pin 100, the width of the second groove section 13 is larger than the maximum width of the first groove section 12, and the second groove section 13 provides a stroke space and a withdrawing safety distance for withdrawing the inclined pin 100.

Specifically, please refer to fig. 5 and 6, wherein the cross section of the groove 11 is dovetail-shaped, and the cross section of the boss 101 is correspondingly dovetail-shaped, so that the boss 101 can be clamped in the first groove section 12, the product 10 can be effectively pulled when the mold is opened, and the product 10 is prevented from sticking to the mold.

The angle pin 100 includes a head 102 and a rod 103, the boss 101 is disposed on the head 102, and one end of the rod 103 is fixed in the head 102. Specifically, the head portion 102 is provided with a receiving groove, one end of the rod portion 103 is a protrusion 104, the protrusion 104 is clamped in the receiving groove, and the cross section of the receiving groove and the protrusion 104 is T-shaped.

Referring to fig. 7 to 9, fig. 7 is a schematic view illustrating the structure taper pin 100 of the product drawing die of the present invention withdrawn, fig. 8 is a sectional view illustrating the structure taper pin 100 of the product drawing die of the present invention withdrawn, and fig. 9 is a partially enlarged view of fig. 8.

After the product 10 is molded, the mold is opened, and since the boss 101 of the taper pin 100 is clamped in the groove 11 of the product 10, when the mold is opened, the boss 101 pulls the product 10, so that the product 10 is prevented from being stuck to the mold.

After the mold is completely opened, the product 10 is ejected upwards by the angle pin 100, the angle pin 100 is ejected upwards and simultaneously exits backwards, the boss 101 of the angle pin 100 gradually exits from the first groove section 12 to the second groove section 13, the boss 101 is gradually separated from the groove 11, and then the product 10 is taken out.

In summary, according to the structure of the product drawing die, the groove 11 is formed in the product, and the boss 101 is formed on the taper pin 100, so that the product 10 can be prevented from being stuck to the die, and the withdrawing of the taper pin 100 is not affected.

Claims

1. The utility model provides a prevent structure of product drawing die, its characterized in that includes the taper pin, be equipped with the boss on the taper pin, the product is gone up the concave a plurality of recesses that are equipped with, and each this recess has first groove section and second groove section, the boss card is in first groove section, the width of first groove section widens gradually along the direction that the taper pin withdrawed from, the width of second groove section is the same along the direction that the taper pin withdrawed from.

2. The structure for preventing the product from being drawn according to claim 1, wherein the opening direction of the mold is taken as a vertical direction, and two side walls of the groove are inclined to the vertical direction.

3. The structure of claim 2, wherein the cross-section of the groove is dovetail-shaped.

4. The structure of claim 1, wherein the angle pin comprises a head portion and a shaft portion, the boss is disposed on the head portion, and one end of the shaft portion is fixed in the head portion.

5. The structure of claim 4, wherein the head portion has a receiving groove, the rod portion has a protrusion at one end thereof, and the protrusion is engaged with the receiving groove.

6. The structure of claim 5, wherein the receiving groove and the protrusion have a T-shaped cross section.