CN103895191B - A kind of have the mould of automatic water gate cutting device in mould - Google Patents

Abstract

The invention discloses a mold with an automatic water cutting device in the mold, which includes a mold panel, a front mold and a rear mold, and the front mold and the rear mold form a mold cavity after being molded together, and it is characterized in that: each mold cavity is correspondingly set There is an automatic water cutting device, the main body of the automatic water cutting device is installed in the front mold corresponding to the glue inlet of the mold cavity, or the main body of the automatic water cutting device is installed in the back mold corresponding to the glue inlet of the mold cavity. The invention innovatively sets the automatic water cutout device in the mold, which realizes the plastic injection mold to automatically carry out the water cutout processing in the mold after the product is formed, and the product meets the requirements after the mold is opened, and there is no need to increase the manual water cutout process, saving labor labor costs and provide productivity.

Description

A mold with an automatic water cutting device in the mold

technical field

The invention relates to a mold, in particular to a mold with an automatic water cutting device inside the mold.

Background technique

At present, plastic injection molds mainly adopt glue feeding methods such as large nozzle, small nozzle, diving and horn, etc., but no matter what kind of glue feeding method, it needs subsequent processing of cutting nozzle, and the glue feeding method of large nozzle is relatively effective. Good, but the nozzle is larger, and more nozzle processing is required in the follow-up to make the product meet the requirements. The existing molds produced by the large nozzle inlet method are semi-finished products, that is, the product and the nozzle waste are bonded together, and manual processing is required. The reprocessing of the nozzle requires more procedures, higher labor costs, and lower work efficiency.

Contents of the invention

The object of the present invention is to solve the above-mentioned shortcomings and provide a mold with an automatic water cutout device in the mold, which realizes automatic water cutout processing in the mold after the product is formed in the plastic injection mold, and the product meets the requirements after the mold is opened , no need to increase the process of manually cutting the nozzle, saving labor costs and improving production efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions:

A mold with an automatic water cutout device in the mold, including a mold panel, a front mold and a back mold, the front mold and the back mold form a mold cavity after being molded, and it is characterized in that: each mold cavity is correspondingly provided with an automatic water cutout device, the main body of the automatic water cutting device is installed in the front mold corresponding to the glue inlet of the mold cavity, or the main body of the automatic water cutting device is installed in the rear mold corresponding to the glue inlet of the mold cavity.

When the main body of the automatic water cutting device is installed on the front die, the front die is provided with a front die cutter installation cavity and a front cutter slit, and the front cutter slit is located between the front die cutter installation cavity and the mold cavity. between the glue ports.

The automatic water cutting device includes:

The cutting blade is installed at the front end of the front cutter through the seam, and its rear end is installed in the installation cavity of the front die cutter;

Cutter seat, which is installed in the front die cutter installation cavity, and its middle is inlaid and connected to the rear end of the cutting blade;

The cutter baffle is installed in the front die cutter installation cavity, and is connected with the cutter seat through fasteners;

Compression spring, which is installed between the cutter seat and the end wall of the front die cutter installation cavity;

Oil cylinder, which is installed in the front die cutter installation cavity, the cylinder push rod is connected with the cutter baffle, and the rear end of the oil cylinder is fixed on the mold panel;

a mold closing trigger, which is installed between the front mold and the outer wall of the rear mold;

The programmable controller is electrically connected with the oil cylinder and the mold closing trigger.

The thickness of the front end of the cutting blade is between 0.5 and 1 mm, and the front end of the cutting blade and the front cutting knife pass through the seam in a clearance fit, and the value of the gap is between 0 and 0.2 mm; the blade of the cutting blade is a single bevel blade, And the front end of the blade is aligned with the edge of the mold cavity.

When the main body of the automatic water cutting device is installed on the rear mold, the rear mold is provided with a rear die cutter installation cavity and a rear cutter slit, and the rear cutter slit is located between the rear die cutter installation cavity and the mold cavity. between the glue ports.

The automatic water cutting device includes:

The cutting blade, the front end of which is installed on the rear cutter to pass through the seam, and the rear end is installed in the installation cavity of the rear die cutter;

The cutter seat is installed in the cavity of the rear die cutter, and the middle part is inlaid and connected to the rear end of the cutter blade;

The cutter baffle is installed in the rear die cutter installation cavity, and is connected with the cutter seat through fasteners;

Compression spring, which is installed between the cutter seat and the end wall of the rear die cutter installation cavity;

Oil cylinder, which is installed in the rear die cutter installation cavity, the cylinder push rod is connected with the cutter baffle, and the rear end of the oil cylinder is fixed on a cover plate, and the cover plate is fixed on the rear mold by fasteners;

a mold closing trigger, which is installed between the front mold and the outer wall of the rear mold;

The programmable controller is electrically connected with the oil cylinder and the mold closing trigger.

The thickness of the front end of the cutting blade is between 0.5 and 1mm, and the front end of the cutting blade and the rear cutting knife pass through the seam in a clearance fit, and the value of the gap is between 0 and 0.2mm; the blade of the cutting blade is a single bevel blade, And the front end of the blade is aligned with the edge of the mold cavity.

The mold closing trigger includes:

Touch the signal switch, which is installed on the side wall of the front mold;

The adjustment block is installed on the side wall of the rear mold corresponding to the position of the touch signal switch, and when the mold is closed, the adjustment block contacts and cooperates with the touch signal switch.

The mold closing trigger is a mold closing sensor for detecting the mold closing state.

The invention innovatively sets the automatic water cutout device in the mold, which realizes the plastic injection mold to automatically carry out the water cutout processing in the mold after the product is formed, and the product meets the requirements after the mold is opened, and there is no need to increase the manual water cutout process, saving labor labor costs and provide productivity.

Description of drawings

Figure 1 is a schematic diagram of the external structure of a mold with an automatic water cutting device in the mold according to the present invention.

Fig. 2 is a top view of the rear mold of the present invention.

Fig. 3 is a cross-sectional view at A-A of the mold with the automatic water cutting device in the mold according to the present invention.

FIG. 4 is an enlarged schematic diagram of part B of FIG. 3 .

Fig. 5 is a block diagram of the electric control principle of the automatic water cutting device of the present invention.

In order to achieve the above object, the present invention adopts the following technical solutions:

detailed description

Example 1

As shown in Figures 1 to 5, the present invention is a mold with an automatic water cutting device in the mold. The mold is a plastic injection mold. and horns, etc., and the present embodiment is to illustrate the specific structure of the present invention by taking the large nozzle glue inlet mold for producing DVD plastic mirror panels as an example, but the present invention is not limited thereto. All plastic injection moulds.

The mold of the present invention includes a mold panel 1, a front mold 2 and a back mold 3, the front mold 2 includes a front template 23 and a front mold kernel 24, and the back mold 3 includes a back template 31 and a back mold kernel 32, so Form the die cavity 4 after the preceding mold 2 and the rear die 3 are closed, as shown in Figure 2, the present embodiment is a large water inlet mold for producing DVD plastic mirror panels, which includes two mold cavities for DVD plastic mirror panels 4. Each cavity 4 is correspondingly provided with an automatic water cutting device 5 (that is, this embodiment has two sets of automatic water cutting devices), and the main body of the automatic water cutting device 5 is installed on the front mold corresponding to the glue inlet of the cavity 4 2, the front mold 2 is provided with a front die cutter installation cavity 21 and a front cutter slit 22, and the front cutter slit 22 is located between the front die cutter installation cavity 21 and the mold cavity glue inlet 41 .

Further, as shown in Figures 1, 4 and 5, the automatic water cutting device 5 includes: a cutter blade 51, a cutter seat 52, a cutter baffle 53, a compression spring 54, an oil cylinder 55, a mold clamping trigger 56 and a Program controller 57.

The front end of the cutting blade 51 is installed on the front cutter slit 22, and the rear end is installed in the front die cutter installation cavity 21. The thickness of the front end of the cutting blade 51 is between 0.5 and 1mm. The slit 22 is a gap fit, and the value of the gap is between 0 and 0.2 mm; the blade of the cutting blade 51 is a single bevel blade, and the front end of the blade is aligned with the 4 sides of the mold cavity, and its purpose is to prevent the front end of the blade from Excessive extension prevents the glue from the glue inlet, and at the same time prevents the front end of the blade from being too far away from the glue inlet, causing the glue to accumulate at the front cutter slit 22, increasing the thickness of the nozzle, and thus increasing the difficulty of cutting the nozzle , It is also easy to cause damage to the cutting blade.

The cutter seat 52 is installed in the front die cutter installation cavity 21, and its middle part is inlaid with the rear end of the cutting blade 51. With the matching flange 521 , the cutter seat 52 can lock the protrusion 511 of the cutting blade 51 through the flange 521 .

The cutter baffle 53 is installed in the front die cutter installation cavity 21, and is connected with the cutter seat 52 by a fastener; The cutter seat 52 locks and fixes the rear end of the cutter blade 51 through the flange 521 to realize the fixing of the cutter blade 51 .

Described compression spring 54 is installed between cutter seat 52 and the end wall of front die cutter installation cavity 21, and its function is to realize the elastic recovery of cutter seat 52, thereby realizes the elastic recovery of cutting blade 51, makes cutting blade 51 The initial position can be returned after pressing down the water cutting port, so as to avoid affecting the work of the next cycle.

The oil cylinder 55 is installed in the cavity 21 of the front die cutter, and its oil cylinder push rod 551 is connected with the cutter baffle 53 , and the rear end of the oil cylinder 55 is fixed on the mold panel 1 .

The mold-closing trigger 56 is installed between the front mold 2 and the outer wall of the rear mold 3, and the mold-closing trigger 56 includes a touch signal switch 561 and an adjustment block 562, and the touch signal switch 561 is installed on the front mold 2 side On the wall, the adjustment block 562 is installed on the side wall of the rear mold 3 corresponding to the position of the touch signal switch 561, and when the mold is closed, the adjustment block 562 is in contact with the touch signal switch 561, and the adjustment block 562 can adjust its position The position on the back mold 3 sidewalls makes it cooperate with the touch signal switch 561 more properly. When the front mold 2 and the rear mold 3 are closed, the touch signal switch 561 touches the adjustment block 562 to send the mold closing signal to the programmable controller 57 . Alternatively, the mold closing trigger 56 is a mold closing sensor for detecting the mold closing state.

The programmable controller 67 is electrically connected with the oil cylinder 55 and the mold closing trigger 56 .

The present invention will be further described below by specific application principles:

As shown in Figures 1 to 5, at first the front mold 2 and the rear mold 3 of the mold complete the mold closing. After the mold closing, the touch signal switch 561 of the mold closing trigger 56 and the adjustment block 562 touch, and the mold closing trigger 56 sends a closing signal. The mold signal is sent to the programmable controller 57, and the programmable controller 57 starts timing, and then the mold fills the mold cavity 4 with glue, and the programmable controller 57 according to the preset time (this time includes the time required for glue feeding, the cooling of the mold blank) time, etc.) to send a water cut command to the oil cylinder 55, and the oil cylinder 55 presses down to drive the cutting blade 51 to quickly cut the water opening, and then the programmable controller 57 releases the pressure to the oil cylinder 55 according to the preset time, and under the action of the compression spring 54, The cutter blade 51, the cutter seat 52, the cutter baffle 53 and the cylinder push rod 551 return to the initial position. After the mold is opened, the product is taken out. When the product is taken out, the excess nozzle of the product has been cut off in the mold , no need to pass through the manual water cut, saving labor costs and improving production efficiency.

Example 2

In this embodiment, the main body of the automatic water cutting device is installed in the rear mold corresponding to the glue inlet of the mold cavity (in embodiment 1, the main body of the automatic water cutting device is installed in the front mold). The detailed structure is as follows:

The mold of this embodiment includes a mold panel, a front mold and a back mold, the front mold includes a front template and a front mold core, the back mold includes a back template and a back mold core, and the front mold and the back mold are combined to form Mold cavity, each mold cavity is correspondingly provided with an automatic water cutting device, the main body of the automatic water cutting device is installed in the rear mold corresponding to the glue inlet of the mold cavity, and the rear mold is provided with a rear die cutter installation cavity and a rear mold cavity. The cutter passes through the seam, and the rear cutter passes through the seam between the installation cavity of the rear die cutter and the glue inlet of the mold cavity.

Further, the automatic water cutting device includes: a cutter blade, a cutter seat, a cutter baffle, a pressure spring, an oil cylinder, a mold clamping trigger and a programmable controller.

The front end of the cutting blade is installed on the rear cutter and the rear end is installed in the installation cavity of the rear die cutter. The thickness of the front end of the cutting blade is between 0.5 and 1mm, and the front end of the cutting blade and the rear cutter are in a clearance fit. , the value of the gap is between 0 and 0.2mm; the blade of the cutting blade is a single bevel blade, and the front end of the blade is aligned with the edge of the mold cavity.

The cutter seat is installed in the rear die cutter installation cavity, and its middle part is inlaid to connect the rear end of the cutting blade. The knife seat can lock the locking protrusion of the cutting blade through the flange.

The cutter baffle is installed in the rear die cutter installation cavity, and is connected with the cutter seat through fasteners; that is, through the fasteners, the cutter baffle tightens the cutter seat so that the cutter seat passes The rear end of the cutting blade is fixed by the locking of the flange, so as to realize the fixing of the cutting blade.

The compression spring is installed between the cutter seat and the end wall of the rear die cutter installation cavity, and its function is to realize the elastic recovery of the cutter seat, so as to realize the elastic recovery of the cutting blade, so that the cutting blade can be pressed down on the cutting nozzle. Return to the initial position to avoid affecting the work of the next cycle.

The oil cylinder is installed in the cavity of the back die cutter, the push rod of the oil cylinder is connected with the cutter baffle, and the rear end of the oil cylinder is fixed on a cover plate, which is fixed on the back mold by fasteners.

The mold closing trigger is installed between the front mold and the outer side wall of the rear mold, the mold closing trigger includes a touch signal switch and an adjustment block, the touch signal switch is installed on the front mold side wall, and the adjustment block is installed On the side wall of the rear mold corresponding to the position of the touch signal switch, and when the mold is closed, the adjustment block is in contact with the touch signal switch. It is more appropriate to cooperate. When the front mold and the rear mold are closed, the touch signal switch will send the closing signal to the programmable controller after touching the regulating block. Alternatively, the mold closing trigger is a mold closing sensor for detecting the mold closing state.

The programmable controller is electrically connected with the oil cylinder and the mold closing trigger.

Claims (6)

1. A mold with an automatic water cutting device in the mold, comprising a mold panel, a front mold and a back mold, forming a mold cavity after the front mold and the back mold are matched, and it is characterized in that: each mold cavity is correspondingly provided with an automatic Water cutting device, the main body of the automatic water cutting device is installed in the front mold corresponding to the glue inlet of the mold cavity. The seam is located between the front die cutter installation cavity and the mold cavity glue inlet; the automatic water cutting device includes: The cutting blade is installed at the front end of the front cutter through the seam, and its rear end is installed in the installation cavity of the front die cutter; Cutter seat, which is installed in the front die cutter installation cavity, and its middle is inlaid and connected to the rear end of the cutting blade; The cutter baffle is installed in the front die cutter installation cavity, and is connected with the cutter seat through fasteners; Compression spring, which is installed between the cutter seat and the end wall of the front die cutter installation cavity; Oil cylinder, which is installed in the front die cutter installation cavity, the cylinder push rod is connected with the cutter baffle, and the rear end of the oil cylinder is fixed on the mold panel; a mold closing trigger, which is installed between the front mold and the outer wall of the rear mold; The programmable controller is electrically connected with the oil cylinder and the mold closing trigger. 2. The mold of the in-mold automatic water-cutting device according to claim 1, characterized in that, the thickness of the front end of the cutting blade is between 0.5 and 1 mm, and the front end of the cutting blade and the front cutting knife pass through the seam as a gap fit, The value of the gap is between 0-0.2mm; the blade of the cutting blade is a single bevel blade, and the front end of the blade is aligned with the edge of the mold cavity. 3. A mold with an automatic water cutting device in the mold, comprising a mold panel, a front mold and a back mold, the front mold and the back mold are matched to form a mold cavity, and it is characterized in that: each mold cavity is correspondingly provided with an automatic Water cutting device, the main body of the automatic water cutting device is installed in the back mold corresponding to the glue inlet of the mold cavity; It is located between the installation cavity of the rear die cutter and the glue inlet of the mold cavity; the automatic water cutting device includes: The cutting blade, the front end of which is installed on the rear cutter to pass through the seam, and the rear end is installed in the installation cavity of the rear die cutter; The cutter seat is installed in the cavity of the rear die cutter, and the middle part is inlaid and connected to the rear end of the cutter blade; The cutter baffle is installed in the rear die cutter installation cavity, and is connected with the cutter seat through fasteners; Compression spring, which is installed between the cutter seat and the end wall of the rear die cutter installation cavity; Oil cylinder, which is installed in the rear die cutter installation cavity, the cylinder push rod is connected with the cutter baffle, and the rear end of the oil cylinder is fixed on a cover plate, and the cover plate is fixed on the rear mold by fasteners; a mold closing trigger, which is installed between the front mold and the outer wall of the rear mold; The programmable controller is electrically connected with the oil cylinder and the mold closing trigger. 4. The mold of the in-mold automatic water-cutting device according to claim 3, characterized in that, the thickness of the front end of the cutting blade is between 0.5 and 1 mm, and the front end of the cutting blade and the rear cutter pass through the seam as a clearance fit, The value of the gap is between 0-0.2mm; the blade of the cutting blade is a single bevel blade, and the front end of the blade is aligned with the edge of the mold cavity. 5. The mold of the in-mold automatic water cutting device according to claim 2 or 3, wherein the mold clamping trigger comprises: Touch the signal switch, which is installed on the side wall of the front mold; The adjustment block is installed on the side wall of the rear mold corresponding to the position of the touch signal switch, and when the mold is closed, the adjustment block contacts and cooperates with the touch signal switch. 6 . The mold of the in-mold automatic water-cutting device according to claim 5 , wherein the mold-closing trigger is a mold-closing sensor for detecting the mold-closing state.