CN105856516B - One kind hales mould emptier - Google Patents

Abstract

The invention provides a strong pull demoulding mechanism, which belongs to the technical field of molds. It solves the problem that the existing automobile sub-instrument panel body is easy to cause scratches on the skin lines during the demoulding process of the skin lines on both sides. This strong pull demoulding mechanism includes a large slider located on the outer side of the plastic part body and a small slider located on the inner side of the plastic part body. The lower end of the small slider has an extension extending to the lower part of the large slider. The extensions are slidably connected by a guide structure, and a delay unit is provided between the large slider and the small slider. The delay unit can limit the outward movement of the small slider within a certain distance of the outward movement of the large slider. A driving structure is arranged between the large sliding block and the extension part, and the driving structure can be used to pull the small drawing block to move outward together when the large sliding block moves outward to a certain distance. The invention has the advantages of good demoulding effect, keeping the product appearance in good condition and the like.

Description

A strong pull-out mechanism

technical field

The utility model belongs to the technical field of moulds, and relates to a strong-pulling demoulding mechanism, in particular to a strong-pulling demoulding mechanism for an auxiliary instrument panel of an automobile.

Background technique

The car sub-dashboard is assembled from two parts: the body and the skeleton. The car sub-dashboard body is an important automotive interior appearance part. It is generally made of PP+EPDM plastic materials with certain elasticity. Because the car sub-dashboard body With the characteristics of complex structure and large molding size, it is easy to cause scratches on the skin texture on both sides during the demoulding process, which seriously affects the surface quality of the body. There are several large-area undercut structures on the inner surface of the vehicle sub-dashboard body. If the two sides of the body cannot be pulled apart during demoulding, the punch surrounded by the two sides in the middle of the body cannot fall off. The traditional method is to use a multi-slope top multi-slider mechanism with multiple undercuts and core pulls, which cannot guarantee safe and reliable operation, and has a short service life.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose a strong-drawing demoulding mechanism with good demoulding effect and good appearance of the product.

The purpose of this utility model can be achieved through the following technical solutions:

This strong pulling demoulding mechanism includes a large slider located on the outer side of the plastic part body and a small slider located on the inner side of the plastic part body. The lower end of the small slider has an extension extending to the lower part of the large slider. Its features That is, the large slider and the extension are slidably connected through a guide structure, and a time delay unit is provided between the large slider and the small pull block, and the time delay unit can The outward movement of the small drawing block is limited within a certain distance, and a driving structure is provided between the large sliding block and the extension part, and the driving structure can be used to pull the small drawing block together when the large sliding block moves outward to a certain distance. Movement outward.

In the above-mentioned strong pulling demoulding mechanism, the extension direction of the extension part is parallel to the outward movement direction of the large slider, and the driving structure includes a guide groove provided at the bottom of the large slider and a The stop protrusion on the part, the guide groove extends along the length direction of the extension part, the stop protrusion protrudes into the guide groove and can move along the length direction of the guide groove, when the When the large slider abuts against the outer surface of the plastic part body, the position-limiting protrusion abuts against the end of the guide groove away from the small pull-block.

In the above-mentioned strong pulling demoulding mechanism, the time delay unit is a spring, when the large slider abuts against the outer surface of the plastic part body and the small pull block abuts against the inner surface of the plastic part body , the spring is in a compressed state.

In the above-mentioned strong pulling demoulding mechanism, the guide structure includes chute 1 and chute 2 symmetrically arranged on both sides of the extension part, the chute 1 and chute 2 extend along the length direction of the extension part, The bottom of the large slider is fixedly connected with a slide seat 1 and a slide seat 2, the side of the slide seat 1 has a slide rail 1 extending into the chute 1, and the side of the slide seat 2 has a slide rail extending into the slide groove 1. To slide rail two in chute two. Under the action of the first chute, the second chute, the first slide rail and the second slide rail, the large slider is limited to move only along the length direction of the extension.

In the above-mentioned strong pulling demoulding mechanism, the first and second sliding seats are fixed to the bottom of the large sliding block by bolts.

In the above-mentioned strong pulling demoulding mechanism, there are 2-3 small pulling blocks.

In the above-mentioned a kind of strong pulling demoulding mechanism, there are 3 small pulling blocks.

The working principle of this strong pulling demoulding mechanism is as follows: when the mold is opened, the large slider first pulls the core for a certain distance, that is, the large slider moves along the extension part away from the small pulling block, so that the skin texture area on the surface of the plastic part body is separated The large slider is extended by the spring return, and under the action of the elastic force, the small pull block is kept still until the small pull block touches the limit point (the limit point is set at different distances according to the size and position of the undercut of different parts of the product), When the end of the guide groove close to the small block abuts against the limit protrusion, the large slider drives the extension to move outward together, thereby driving the small block to forcefully pull the side of the plastic part body at different distances, making it easy to use The large-area undercut structure on the inner side of the plastic part body is separated from the punch, and finally the plastic part body is ejected by the ejection system to complete the demoulding.

Compared with the prior art, this strong pull-out mechanism has the following advantages:

The large slider is used to delay the demoulding by driving the small pulling block to forcefully pull the mold, which can easily realize the demoulding of the complex large-area multi-position undercut structure of the plastic body product, and can keep the appearance of the product in good condition; the operation is safe and reliable, Effectively guarantee the service life of the mold.

Description of drawings

Fig. 1 is a structural schematic diagram of a preferred embodiment provided by the utility model.

Fig. 2 is another structural schematic diagram of a preferred embodiment provided by the utility model.

Fig. 3 is a schematic diagram of the structure provided by the utility model when the large slider is omitted.

Fig. 4 is a schematic structural view of the large slider provided by the present invention.

In the figure, 1. Plastic part body; 2. Large slider; 3. Small puller; 4. Extension; 51. Guide groove; .

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

The strong pulling demoulding mechanism shown in Figure 1 includes a large slider 2 located on the outer side of the plastic part body 1 and a small slider 3 located on the inner side of the plastic part body 1, as shown in Figure 2, the small slider 3 The lower end has an extension 4 extending to the bottom of the large slider 2 . In this embodiment, the large slider 2 and the extension part 4 are slidably connected through a guide structure, and a time delay unit is provided between the large slider 2 and the small slider 3, and the time delay unit can move the large slider 2 outward The outward movement of the small pull block 3 is restricted within a certain distance of movement, and a drive structure is provided between the large slide block 2 and the extension 4, which can be used to pull the small pull block 2 when the large slide block 2 moves outward to a certain distance. Pull block 3 to move outwards together.

As shown in Figures 3 and 4, the extension direction of the extension part 4 is parallel to the outward movement direction of the large slider 2, and the driving structure includes a guide groove 51 provided at the bottom of the large slider 2 and a guide groove 51 provided on the extension part 4. The limit protrusion 52 and the guide groove 51 extend along the length direction of the extension part 4. The limit protrusion 52 extends into the guide groove 51 and can move along the length direction of the guide groove 51. When the large slider 2 sticks When leaning against the outer surface of the plastic part body 1 , the limit protrusion 52 abuts against the end of the guide groove 51 away from the small pull block 3 .

In this embodiment, the delay unit is a spring, and when the large slider 2 abuts against the outer surface of the plastic part body 1 and the small pull block 3 abuts against the inner surface of the plastic part body 1, the spring is in a compressed state.

As shown in Fig. 2 and Fig. 3, the guide structure includes a chute 61 and a chute 2 symmetrically arranged on both sides of the extension part 4, and the chute 1 61 and the chute 2 extend along the length direction of the extension part 4, as shown in Fig. As shown in 2, the bottom of the large slider 2 is fixedly connected with a sliding seat 62 and a sliding seat 2, the side of the sliding seat 62 has a slide rail 1 extending into the chute 61, and the side of the sliding seat 2 has a Stretch into the slide rail two in the chute two. Under the action of the first chute 61 , the second chute, the first slide rail and the second slide rail, the large slider 2 is restricted to move only along the length direction of the extension part 4 .

As shown in FIG. 2 , the first sliding seat 62 and the second sliding seat are fixed on the bottom of the large sliding block 2 by bolts.

In this embodiment, as shown in FIG. 2 , there are three small pull blocks 3 .

The working principle of this strong pulling demoulding mechanism is as follows: when the mold is opened, the large slider 2 first pulls the core for a certain distance, that is, the large slider 2 moves along the extension 4 away from the small puller 3, so that the appearance of the plastic body 1 The dermatoglyph area breaks away from the large slide block 2, and the spring resets to elongate, impelling the small pull block 3 to remain motionless under the action of elastic force. When the end of the guide groove 51 close to the small block 3 abuts against the limit protrusion 52, the large slider 2 drives the extension part 4 to move outward together, thereby driving the small block 3 to pull the plastic parts at different distances. On the side of the body 1, the large-area undercut structure on the inner side of the plastic part body 1 can be easily separated from the punch, and finally the plastic part body 1 is ejected by the ejection system to complete the demoulding.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (7)

1. one kind hales mould emptier, including big sliding block (2) positioned at plastic body (1) lateral surface and positioned at plastic body (1) The small pulling block (3) of medial surface, the lower end of the small pulling block (3) have the extension (4) for extending to big sliding block (2) bottom, and it is special Sign is, is slidably connected between described big sliding block (2) and extension (4) by guide frame, described big sliding block (2) with it is small Delay unit is provided between pulling block (3), small drawing is limited within the certain distance that the delay unit can move out in big sliding block (2) Block (3) moves out, and is provided with driving structure between described big sliding block (2) and extension (4), the driving structure can be in big sliding block (2) moved out together when moving outwardly to certain distance for drawing small pulling block (3).

2. one kind according to claim 1 hales mould emptier, it is characterised in that the bearing of trend of the extension (4) Parallel with the direction of motion that big sliding block (2) is outside, described driving structure includes the guiding groove located at big sliding block (2) bottom (51) spacing preiection (52) and on extension (4), length direction of the described guiding groove (51) along extension (4) prolong To stretch, described spacing preiection (52) stretches to the length direction motion for being oriented to that groove (51) is interior and energy is along guiding groove (51), when Spacing preiection (52) described in when described big sliding block (2) abuts in plastic body (1) lateral surface, which is resisted against, is oriented to groove (51) One end of interior remote small pulling block (3).

3. one kind according to claim 1 hales mould emptier, it is characterised in that described delay unit is spring, when Described big sliding block (2) abuts in the lateral surface of plastic body (1) and small pulling block (3) abuts in the medial surface of plastic body (1) When, described spring is in compressive state.

4. one kind according to claim 1 hales mould emptier, it is characterised in that described guide frame includes symmetrically setting Chute one (61) and chute two in extension (4) both sides, the chute one (61) and length direction of the chute two along extension (4) Extension, the bottom of the big sliding block (2) are fixed with slide one (62) and slide two, and the sidepiece of the slide one (62), which has, to be stretched into Slide rail one in chute one (61), the sidepiece of the slide two have the slide rail two stretched in chute two.

5. one kind according to claim 4 hales mould emptier, it is characterised in that described slide one (62) and slide two It is bolted on the bottom of big sliding block (2).

6. one kind according to claim 1 hales mould emptier, it is characterised in that described small pulling block (3) is 2-3.

7. one kind according to claim 6 hales mould emptier, it is characterised in that described small pulling block (3) is 3.