CN115383997A - Molds that avoid shavings - Google Patents

Abstract

The invention relates to a die for avoiding scrap generation, which is provided with a latent runner, wherein the latent runner is formed with an inlet and an outlet, the outlet provides a stub bar accommodating, the inlet is provided with a round insert and then accommodated in the latent runner, a stub bar accommodating section, a connecting section and a pushing section are formed in the latent runner from the outlet to the inlet, a propping platform is formed between the connecting section and the pushing section, the round insert is sleeved with a return spring, the stub bar is accommodated in the stub bar accommodating section, the return spring is sleeved in the round insert and then positioned in the pushing section and propped against the propping platform, the round insert can be pushed by a thimble to move towards the outlet, and the round insert returns to the original position under the elastic action of the return spring after being moved.

Description

Molds that avoid shavings

【Technical field】

The invention relates to a mold for avoiding generation of swarf, in particular to a mold for avoiding generation of shavings by friction on the inner wall surface of a latent flow channel of a material head.

【Background technique】

When designing the mold, the size of the latent runner and the gate is not the bigger the better. The size of the latent flow channel is moderate, because the raw material in the latent flow channel is the so-called unused material head. Therefore, when the flow channel is thicker, the weight of the material head is heavier. When these material heads cannot be recycled, the raw material Loss and cost will increase. In addition, the disadvantage of the large gate is that the separation of the finished product and the head often requires manual trimming, and it is not easy to achieve automatic separation of the head, and it is easy to cause uneven trimming and require secondary trimming, which takes longer man-hours.

In the existing technology, in the process of producing plastic parts, die-casting parts and other products through molds, the slider structure is often applied to form the product through the cooperation of an independent runner system, ejection mechanism and slider, but Due to the consideration of the position setting of the slider, a good glue point position is often missed when designing the mold, and the actions of the three will cause some interference to each other and affect the production process. In the mold with a slider structure, the existing technology is to use some traditional glue feeding methods, such as fishhook-type glue inlets, but this method does not allow too many changes in the mold design. The rapid reduction of the cross-sectional area also causes the back pressure of the product to rise sharply, and the glue feed point produces scraps when it is broken. These scraps will cause defective products or crush the mold in the next cycle of production. These shortcomings are invisible increased production costs.

Please refer to Fig. 1, which shows a mold 10 of the prior art in Fig. 1, which has a latent flow channel 101, and the latent flow channel 101 is formed on the slider similar to latent pouring, and the inner wall surface of the latent flow channel 101 It is easy to generate scraps after being slid and rubbed by a material head 11, which will cause the slider to be stuck and cannot be produced normally, so it is necessary to improve it.

【Content of invention】

The main purpose of the present invention is to solve the problem that scraps are easily generated due to the friction between the material head and the inner wall surface of the latent flow channel when the material head is withdrawn from the mold.

To achieve the above purpose, the present invention provides a mold that avoids the generation of scrap. The mold has a latent flow channel. The latent flow channel is formed with an inlet and an outlet. The outlet provides a material head to accommodate, and the inlet is provided with a round insert to enter and then accommodated in the latent flow channel. The inside of the latent flow channel is from the exit to the entrance. It is formed with a charging head accommodation section, a connecting section and a pushing section, and a supporting platform is formed between the connecting section and the pushing section, and a return spring is provided in the round insert sleeve, and the charging head is accommodated in the charging head accommodation section, and The return spring is sleeved behind the round insert in the push section and leans against the platform. The round insert can be pushed by a thimble to move toward the exit direction. After the displacement, the round insert is returned to original location.

In one embodiment, the length of the pushing section is longer than that of the connecting section.

In one embodiment, the length of the pushing section is longer than that of the head accommodating section.

In one embodiment, the head accommodating section is shorter than the connecting section.

In one embodiment, the round inlet and the latent flow channel have the same axis.

In one embodiment, the length of the round insert is the sum of the lengths of the pushing section and the connecting section.

Through the foregoing embodiments of the present invention, compared with the prior art, it has the following characteristics:

Compared with the latent flow channel of the prior art, the latent flow channel of the present invention has a shorter length for accommodating the material head, which can avoid friction between the material head and the latent flow channel when it exits. Excessive scraps are generated, and the round insert can return after the thimble is pushed to the top by the return spring set in the insert.

The specific technology adopted in the present invention will be further described through the following examples and attached drawings.

【Description of drawings】

Fig. 1 is a structural diagram of a mold of the prior art.

Fig. 2 is a schematic view of the structure and composition of the present invention (1).

Fig. 3 is a schematic view of the structure and composition of the present invention (2).

Fig. 4 is a schematic sectional view (1) of the present invention.

Fig. 5 is a schematic sectional view (2) of the present invention.

Description of main component symbols:

10 molds

101 latent runner

11 head

20 molds

201 latent flow channel

202 Entrance

203 Exit

204 round insert

205 Head storage section

206 connection segment

207 push segment

208 Jacking platform

209 return spring

210 thimble

211 axis

21 head

22 sliders

【Detailed ways】

In order to fully understand the purpose, features and effects of the present invention, the present invention will be described in detail by means of the following specific embodiments and accompanying drawings, as follows.

Please refer to Fig. 2 to Fig. 5, the present invention provides a kind of mold 20 that avoids generation of scrap, mold 20 has a latent runner 201, and latent runner 201 is formed with an inlet 202 and an outlet 203, and outlet 202 provides a material head 21 to hold The inlet 202 is accommodated in the submerged flow channel 201 after entering the inlet 202. In one embodiment, the round inlet 204 and the latent flow channel 201 have the same axis. The inside of the latent flow channel 201 is formed from the outlet 203 to the inlet 202 with a material head accommodating section 205, a connecting section 206 and a pushing section 207. In one embodiment, the length of the pushing section 207 is longer than the connecting section 206, or push The length of the section 207 is greater than that of the head accommodating section 205, or the length of the head accommodating section 205 is shorter than that of the connecting section 206, and a platform 208 is formed between the connecting section 206 and the pushing section 207, and the round insert 204 is provided with a Return spring 209, the material head 21 is accommodated in the material head accommodation section 205, and the return spring 209 is set in the back of the round insert 204 in the push section 207 and leans against the abutting platform 208, the round insert 204 can be received The pushing of a thimble 210 moves towards the direction of the outlet 203, and the round plunger 204 returns to its original position under the elastic action of the return spring 209 after the displacement. In one embodiment, the length of the round insert 204 is the sum of the lengths of the pushing section 207 and the connecting section 206 .

Please refer to Fig. 2 to Fig. 5, the following is the description of the structural design of the present invention: the material head 21 of the present invention is shortened after being designed, and the material head 21 is placed in the material head accommodating section 205 of the latent flow channel 201, and the latent flow channel The bottom of the 201 is inlaid with a round insert 204, and the round insert 204 is set with a return spring 209 to provide a reset function. The round insert 204 and the material head 21 retreat together with a slider 22 to the top of the thimble 210, and the thimble 210 pushes the round The insert 204 drives the round insert 204 to push the material head 21 upwards. After the material head 21 is ejected, the thimble 210 returns to its original position, and the round insert 204 returns to its original position under the force provided by the return spring 209, and then Reset together with slide block 22. As mentioned above, in this way, it is possible to effectively prevent scraps from being generated due to friction when the material head 21 slides with the inner wall surface of the latent flow channel 201 , and also prevents the slider 22 from being strained and seized.

Please refer to Fig. 2 to Fig. 5, the following is a detailed description of the action of the mechanism of the present invention: after mold closing and forming, the mold is opened, and the slider 22, together with the material head 21, the round insert 204 and the return spring 209, retreats to the top of the thimble 210, at this time The undercut of the product has been disengaged, and the material head 21 has been separated from the product. After the thimble 210 pushes the round insert 204, it drives the round insert 204 to push the material head 21 out. After the thimble 210 returns to its original position, the round insert 204 is Return to the original position under the effect of the return spring 209, and then close the mold together with the slide block 22.

Although the embodiments of the present invention are disclosed as above, they are not intended to limit the present invention. Anyone skilled in the related art can use the shapes, structures and features described in the claims of the present invention without departing from the spirit and scope of the present invention. , method and quantity can be slightly changed, so the scope of patent protection of the present invention must be defined by the scope of claims appended to this specification.

Claims (6)

1. A mold for avoiding the generation of scraps, the mold having a hidden channel, the hidden channel being formed with an inlet and an outlet, the outlet providing a stub bar receiving, and the inlet receiving a round insert, characterized in that the mold for avoiding the generation of scraps comprises:

the inside of the latent runner is formed with a stub bar holding section, a connecting section and a pushing section by the export toward the entry direction, a top is formed between the connecting section and the pushing section and leans on the platform, the circle is gone into the son and is overlapped and is equipped with a reset spring, the stub bar holding is in stub bar holding section, and the reset spring cover is established it is in to be located behind the circle income son in the pushing section and the top lean on in the top leans on the platform, the circle is gone into the son and can be passed by the ejection of a thimble toward export direction displacement, receive after the circle income son displacement reset to original position by reset spring's elastic action.

2. A mold for preventing generation of chips according to claim 1, wherein the pushing section has a length longer than that of the connecting section.

3. A die for avoiding the generation of chips according to claim 1, wherein the length of the pushing section is greater than that of the stub bar accommodating section.

4. A die for avoiding the generation of chips according to claim 1, wherein the stub bar accommodating section has a length smaller than that of the connecting section.

5. The mold for avoiding the generation of chips as claimed in claim 1, wherein the circular inlet is coaxial with the submerged flow channel.

6. The mold for avoiding the generation of material scraps as claimed in claim 1, wherein the length of the circular insert is the sum of the lengths of the pushing section and the connecting section.

Images