CN205238419U - A mold shrinking pin and nut structure - Google Patents

Abstract

The utility model discloses a nut structure is put to mould throat needle, including bottom plate, mould C board, layer board, mould B board and ejecting device, bottom plate top mould C board, layer board, mould B board and mould benevolence have set gradually, ejecting device include thimble bottom plate, thimble panel and thimble, thimble bottom plate, thimble panel set up between bottom plate and layer board, mould B board and mould benevolence on all be provided with the through-hole that is used for imbedding an department section of thick bamboo, the layer board on install an department section of thick bamboo, department section of thick bamboo top passes the through-hole of layer board, mould B board in proper order and stretches into to the through-hole of mould benevolence, the thimble can be followed an department section of thick bamboo and move about from top to bottom, thimble one end is installed between thimble bottom plate, thimble panel and the other end stretches into mould benevolence through. The utility model provides an injection mold contracts needle and puts nut structure, easy installation, convenient operation, and control accuracy is high, has promoted work efficiency and product quality, and moves more stably, has prolonged the life of mould.

Description

A mold shrinking pin and nut structure

technical field

The utility model relates to the technical field of moulds, in particular to a pin-shrinking and nut-retracting structure of an injection mould.

Background technique

In the molding and injection molding process of mobile phone casings and other digital accessories, nuts can be assembled by hot melting, but the appearance will produce indentations, which affects the product yield, or they can be placed on the mold through a needle-shaped structure, and the needles can be removed after injection molding is completed. pull out, but this method is inefficient, and the utility model of the authorized notification number CN202021747U provides a nut placement device, including a guide and a limit column, and an upper horizontal plate and a lower horizontal plate that are parallel to each other. , the lower horizontal plate is provided with at least one cylinder, the upper horizontal plate is correspondingly provided with a cylinder needle passing through the cylinder; the horizontal plate is fixed with a connecting column, the upper horizontal plate is sleeved on the connecting column, A push plate is fixed on the upper end of the column, a spring is sleeved on the connecting column between the push plate and the upper horizontal plate, and at least a pair of positioning columns socketed in the lower horizontal plate are fixed on the upper horizontal plate. It realizes the installation of multiple nuts, is accurate in place, and has high efficiency. It is equipped with a buffer spring to avoid damage to the cylinder needle and has a long service life, but there are still deficiencies in structural stability and application range.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides an injection mold shrinking pin and nut structure with high working efficiency, good working stability and long service life.

The technical scheme of the present utility model is: a mold shrinking pin and nut structure, including a bottom plate, a mold C plate, a supporting plate, a mold B plate and an ejection device, and the mold C plate, supporting plate, Mold B plate and mold core, the ejector device includes a thimble base plate, a thimble panel and a thimble, and the thimble base plate and the thimble panel are arranged between the base plate and the supporting plate, and the described supporting plate, the mold B plate and the mold The cores are all provided with through holes for embedding the cylinder. The cylinder is installed on the supporting plate. The above-mentioned thimble can move up and down along the cylinder, one end of the thimble is installed between the thimble bottom plate and the thimble panel, and the other end extends into the mold core through the cylinder.

The through hole of the mold core is divided into upper and lower sections, and the diameter of the upper section is smaller than that of the lower section. The shape of the top of the cylinder matches the shape of the through hole of the mold core and can move up and down along the through hole of the mold core.

Both sides of the mold B plate and the supporting plate are connected by a small screw and a screw spring.

The small screw is movably arranged in the screw mounting hole of the mold B plate, the upper limit hole is set above the screw mounting hole and the lower limit hole is set below, the top of the small screw is movably set in the upper limit hole, and the small screw extends into the lower limit hole The part is equipped with a screw spring, and the bottom of the small screw is threadedly connected with the supporting plate.

A return spring assembly is arranged between the thimble bottom plate and the supporting plate.

Several guide columns are installed between the base plate and the supporting plate.

The beneficial effects of the utility model are as follows: the injection mold shrinking pin and nut structure provided by the utility model is easy to install, convenient to operate, high in control precision, improves work efficiency and product quality, and runs more stably, prolonging the use of the mold life.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model when the mold is opened.

Fig. 2 is a schematic cross-sectional view of the utility model when the mold is closed.

Fig. 3 is another schematic cross-sectional view of the utility model when the mold is closed.

In the figure, 1-mold B plate, 2-supporting plate, 3-mold C plate, 4-bottom plate, 5-thimble panel, 6-drum, 7-nut, 8-small screw.

detailed description

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

As shown in Fig. 1, Fig. 2 and Fig. 3, a mold shrinking pin nut structure includes a bottom plate (4), a mold C plate (3), a supporting plate (2), a mold B plate (1) and an ejector device , above the bottom plate (4), there are mold C plate (3), supporting plate (2), mold B plate (1) and mold core in sequence, and the ejector device includes a thimble base plate and a thimble panel (5) and thimble, the thimble bottom plate and thimble panel (5) are set between the bottom plate (4) and the supporting plate (2), and the supporting plate (2), the mold B plate (1) and the mold core are all set There is a through hole for inserting the cylinder (6), the cylinder (6) is installed on the supporting plate (2), and the cylinder (6) passes through the supporting plate (2) and the mold B plate (1) in turn The through hole extends into the through hole of the mold core. The through hole of the mold core is divided into upper and lower sections and the diameter of the upper section is smaller than the diameter of the lower section. The shape of the top of the cylinder (6) matches the through hole of the mold core and can The through hole of the mold core moves up and down, the thimble can move up and down along the cylinder (6), one end of the thimble is installed between the thimble bottom plate and the thimble panel (5), and the other end of the thimble extends into the mold core through the cylinder (6) middle.

In this embodiment, both sides of the mold B plate (1) and the supporting plate (2) are connected by a small screw (8) and a screw spring, and the small screw (8) is movably arranged on the mold B plate (1 ) in the screw installation hole, the upper limit hole and the lower limit hole are set above the screw installation hole, the top of the small screw (8) is movable in the upper limit hole, and the part of the small screw (8) extending into the lower limit hole is installed. Screw spring, the bottom of the small screw (8) is threadedly connected to the supporting plate (2), and a return spring assembly is arranged between the thimble base plate and the supporting plate (2), and the base plate (4) and the supporting plate (2) Several guide posts are installed between them.

In the specific implementation, the mold is opened for the first time, and the supporting plate (2), the mold C plate (3), the bottom plate (4) and the cylinder (6) are driven to move down 5.0mm, and the mold is limited by the small screw (8) The farthest distance of downward movement; after the mold opening is completed, put the nut (7) into the through hole of the mold core and stick to the top of the cylinder (6), then the cylinder (6) will drive the nut ( 7) move upward together, thereby effectively solving the problem that the nut (7) is suspended on the mold core.

What described in above-mentioned embodiment and description just illustrates the principle of the utility model and the best embodiment, under the premise of not departing from the spirit and scope of the utility model, the utility model also can have various changes and improvements, these changes and improvements All fall within the scope of the utility model claimed.

Claims (6)

1. A mold shrinking pin nut structure, comprising a base plate, a mold C plate, a supporting plate, a mold B plate and an ejection device, and the mold C plate, a supporting plate, a mold B plate and a mold core are sequentially arranged above the base plate , the ejector device includes a thimble base plate, a thimble panel and a thimble, the thimble base plate and the thimble panel are arranged between the base plate and the supporting plate, and the supporting plate, the mold B plate and the mold core are all provided with Embedding the through hole of the cylinder, the cylinder is installed on the supporting plate, the upper part of the cylinder sequentially passes through the through hole of the supporting plate and the mold B plate and extends into the through hole of the mold core, and the thimble can move along the The cylinder moves up and down, one end of the thimble is installed between the thimble bottom plate and the thimble panel, and the other end extends into the mold core through the cylinder. 2. The mold shrinking pin and nut structure according to claim 1, characterized in that: the through hole of the mold core is divided into upper and lower sections, and the diameter of the upper section is smaller than the diameter of the lower section, and the shape of the top of the cylinder is the same as that of the mold core. The via shape matches. 3. The mold shrinking needle and nut expansion structure according to claim 1, characterized in that: the two sides of the mold B plate and the supporting plate are connected by a small screw and a screw spring. 4. The structure of mold shrinking needles and nuts according to claim 3, characterized in that: the small screw is movably arranged in the screw mounting hole of the mold B plate, an upper limit hole is set above the screw mounting hole and a lower limit is set below Hole, the top of the small screw rod is movably arranged in the upper limit hole, the part of the small screw rod extending into the lower limit hole is equipped with a screw rod spring, and the bottom of the small screw rod is threadedly connected with the supporting plate. 5. The structure of mold shrinking needle and nut resetting according to claim 1, characterized in that: a return spring assembly is arranged between the ejector pin bottom plate and the supporting plate. 6. The structure of mold shrinking needle and nut resetting according to claim 1, characterized in that: several guide columns are installed between the bottom plate and the supporting plate.