CN102259411B - Mold for solving molding defects of easy shrinkage, difficult glue saturation, difficult air exhaust and the like - Google Patents

Abstract

A solve shrink easily, difficult to be full of glue, difficult mould of exhaust shaping defects, etc., include 1. take the mould of the injection molding machine intramode glue-filling to the local thick glue position of the mold ejection signal of the closed mould or take the core-pulling signal of the front mould, there is glue-filling organization used for glue-filling to the thick glue position of the products in the movable mould core; 2. the injection molding machine with a mold closing ejection signal or a front mold core pulling signal is used for molding a local thin glue position mold in the mold, and a molding mechanism for molding a product thin glue position is arranged in a movable mold core; 3. the mold with the mold closing ejection signal or the front mold core pulling signal is an automatic flash cavity flash cutting mechanism in the injection molding machine, and a mechanism for automatically cutting flash cavity flash in the mold is also arranged in the movable mold core.

Description

A mold that solves molding defects such as shrinkage, difficulty in filling glue, and difficulty in venting

technical field

The present invention relates to the plastic mold of ordinary injection molding machine, mainly refers to the injection molding machine with closed mold ejection signal or with front mold core pulling signal to solve the problem that the local thick glue position of the plastic product is easy to shrink; the local thin glue position is difficult to fill the glue; the clamping water line Coarse; Difficult to exhaust; Molds with molding defects such as cold glue.

Background technique

The following molding defects often exist in the injection molding of traditional ordinary injection molding machines: 1. Shrinkage - refers to uneven cooling and shrinkage of the product due to too thick local glue after injection: the heat dissipation in the center of the thick glue is slow on the surface And other thin rubber parts will continue to shrink after cooling and solidification, resulting in the formation of a pit on the surface of the product and affecting the appearance of the product. 2. Due to the relatively thin glue thickness at a certain part of the product (referred to as thin glue position), it causes problems such as difficulty in glue running during molding (easy to lack glue during molding), trapped air and weld lines. Weld line ---- refers to the part of the glue that is too thick or too thin during injection molding, the front peak temperature of two or more glue flows is lower than the good welding temperature of the glue, so that it cannot be well welded Fusion to form a visible seam line on the surface of the article affects the appearance of the article. The welding line is also known as the water line. 3. Trapped air----refers to the hot-melt glue flow of the product during injection molding from the glue inlet to all parts of the product, but when the glue flow reaches the last position or a local thin glue position, the mold cavity The gas cannot be discharged and the backlog or the material flow flow is far away when it reaches this position, there is already cold glue, which affects the appearance of the product surface. In order to solve this problem, a groove is added at the non-appearance of the end to communicate with the product, and gas or cold glue is introduced into this groove, and this groove is the overflow hole. In order to solve the above three problems of molding defects, the traditional methods are: 1. In order to solve the local shrinkage of glue thickness and thin glue position, it is usually solved by increasing the pressure of injection molding. However, usually increasing the injection pressure still cannot completely solve the problem, or the two problems are solved, but due to the increase of the injection pressure, the parting surface of the product is caused (burrs), the mold is deformed, and the life of the mold is significantly reduced. New problems such as increased machine power consumption have emerged. 2. In order to solve the trapped air or cold glue, add an exhaust groove or overflow hole at the trapped air. The exhaust groove cannot solve the cold glue and some positions cannot be added with an exhaust groove, but can only be solved by adding an overflow hole. However, because the overflow hole is connected with the product, it will be separated by after-shave treatment, which increases the cost of post-processing and affects the quality of the product.

After retrieving the disclosed documents, it is not found to use the same technology as the oil cylinder of this technology and the structural principle on the plastic mold.

Contents of the invention

The purpose of the present invention is to provide an injection molding machine with a closed mold ejection signal or a front mold core-pulling signal for partial feeding in the mold, easy to form a local thin glue position and easy to vent or cold glue mold, by setting the mold in the mold The first structure presses the amount of glue into the product, which can realize secondary glue replenishment for local thick glue positions, forming thin glue positions, adding overflow holes at any position on the back mold of the product, and automatically cutting off the overflow glue in the mold. It solves the molding problems such as shrinkage, unsaturated glue, trapped air, cold glue, and water line existing in the above products.

One of the technical proposals for realizing the present invention is: this mold is suitable for filling the local thick glue position of the product, and it includes a static mold base, a static mold plate, a dynamic mold base, a dynamic mold plate, a mold foot, and a top roller of an injection molding machine, wherein:

A static template is provided below the static mold base, a static mold core is arranged in the static template, and a product cavity is arranged in the static mold core;

The mold foot is provided on the movable mold base, the movable template is arranged on the mold foot, the movable mold core is arranged in the movable template, and the product thimble top plate and the product thimble are sequentially arranged between the mold feet from bottom to top. The fixed plate is provided with a chute on the thimble fixed plate of the product. The thimble of the product passes through the fixed plate of the thimble of the product and the core of the movable mold and is connected to the bottom surface of the product. The thimble cup head at the lower end of the product thimble slides in the chute. The head is in contact with the support column cup head of the support column, and the lower end of the support column is in contact with the movable mold seat. There is also a return rod on the product thimble fixing plate for jacking up and separating the static formwork. A return spring is set on the return rod. Garbage nails are set between the product thimble top plate and the movable mold base, and an electronic protection switch is provided on the movable mold base. In the KO hole of the movable mold base, there is an injection molding machine ejector that pushes the product thimble top plate, or in the mold. There is an external mold cylinder (not shown in the figure) between the feet and the static template, and the movable mold base, mold feet and movable template are fixed together by screws;

There is also a glue replenishing mechanism for the thick glue position of the product in the core of the movable mold.

The technical program also includes:

The glue replenishing mechanism includes a glue filling hole and a rubber pressing rod in the movable mold core, the lower end of the rubber pressing rod is provided with a rubber pressing rod cup head, and the rubber pressing rod passes through the thimble fixing plate of the product and enters the movable mold core The glue filling hole is connected to the product cavity, and there is a gap between the top of the glue filling rod and the bottom surface of the product. There is a glue filling in the gap, and the glue pressing rod pushes the glue filling into the product. The cavity is used to realize the filling of the thick glue position, and the glue rod is fixed in the thimble fixing plate of the product through the cup head of the glue rod.

The glue filling hole corresponds to the thick glue position of the product.

The second technical solution to realize the present invention is: this mold is suitable for the local thin rubber position of the product, and it includes a static mold base, a static template, a dynamic mold base, a dynamic template, a mold foot, and an injection molding machine top stick, wherein:

A static template is provided below the static mold base, a static mold core is arranged in the static template, and a product cavity is arranged in the static mold core;

The mold foot is provided on the movable mold base, the movable template is arranged on the mold foot, the movable mold core is arranged in the movable template, and the product thimble top plate and the product thimble are sequentially arranged between the mold feet from bottom to top. The fixed plate is provided with a chute on the thimble fixed plate of the product. The thimble of the product passes through the fixed plate of the thimble of the product and the core of the movable mold and is connected to the bottom surface of the product. The thimble cup head at the lower end of the product thimble slides in the chute. It is in contact with the support column cup head of the support column, and the lower end of the support column is in contact with the movable mold seat. There is also a return rod on the thimble fixing plate of the product for jacking up and separating the static formwork. A return spring is set on the return rod. Garbage nails are provided between the thimble top plate 18 and the movable mold base, and an electronic protection switch is also provided on the movable mold base. In the KO hole of the movable mold base, there is an injection molding machine ejector that pushes the thimble top plate of the product, or in the mold base. There is an external mold cylinder (not shown in the figure) between the feet and the static template, and the movable mold base, mold feet and movable template are fixed together by screws;

There is also a forming mechanism for forming the thin rubber part of the product in the movable mold core.

The technical program also includes:

The molding mechanism includes a rubber rod through hole and a rubber rod in the mold core of the movable mold. The lower end of the rubber rod is provided with a rubber rod cup head, and the rubber rod passes through the thimble fixing plate of the product and enters the movable mold. The glue rod of the mold core passes through the hole, and the glue rod through hole is connected with the product cavity. There is a gap between the top of the glue rod and the bottom surface of the product. There is a glue amount in the gap. Eject a certain distance, make the top surface of the glue rod flush with the product molding surface to realize the thin glue position, and at the same time push the amount of glue into the product cavity, and the glue rod is fixed on the product thimble by the cup head of the glue rod. board.

The glue stick passes through the thin glue position of the corresponding product.

The third technical solution to realize the present invention is: this mold is suitable for automatic shearing and molding in the mold, and the overflow hole of the product added by the exhaust and cold glue at the end of the mold, including static mold base, static template, movable mold base, Moving templates, mold feet, injection molding machine top rods, of which:

A static template is provided below the static mold base, a static mold core is arranged in the static template, and a product cavity is arranged in the static mold core;

The mold foot is provided on the movable mold base, the movable template is arranged on the mold foot, the movable mold core is arranged in the movable template, and the product thimble top plate and the product thimble are sequentially arranged between the mold feet from bottom to top. The fixed plate is provided with a chute on the thimble fixed plate of the product. The thimble of the product passes through the fixed plate of the thimble of the product and the core of the movable mold and is connected to the bottom surface of the product. The thimble cup head at the lower end of the product thimble slides in the chute. It is in contact with the support column cup head of the support column, and the lower end of the support column is in contact with the movable mold seat. There is also a return rod on the thimble fixing plate of the product for jacking up and separating the static formwork. A return spring is set on the return rod. Garbage nails are set between the thimble top plate and the movable mold base, and an electronic protection switch is provided on the movable mold base. In the KO hole of the movable mold base, there is an injection molding machine ejector that pushes the thimble top plate, or between the mold foot and the movable mold base. There is an external oil cylinder (not shown in the figure) between the static templates, and the movable mold base, mold feet and movable template are fixed together by screws;

There is also a mechanism for automatic in-mold cutting of overflow holes in the movable mold core.

The technical program also includes:

The automatic in-mold cutting overflow hole mechanism includes an overflow hole, an overflow glue thimble, a glue stick via hole and a glue stick in the movable mold core, wherein:

The overflow hole is overlapped with the bottom edge of the product cavity, and the product is exhausted and cooled to the overflow hole, and the overflow hole is also connected to the tool through hole;

The lower end of the glue rod is provided with a cup head of the glue rod. The glue rod passes through the thimble fixing plate of the product and enters the tool hole of the movable mold core. The tool hole is connected to the product cavity. There is a gap between the bottom surfaces. In the gap, there is a quantity of pressed glue. The glue rod pushes the pressed glue into the product cavity, and at the same time cuts off the overflow glue in the overflow hole connected to the product. The glue rod The cup head is fixed in the thimble fixing plate of the product through the glue rod;

The lower end of the overflowing rubber thimble is provided with a overflowing rubber thimble cup head, and the overflowing rubber thimble passes through the product thimble fixing plate and the movable mold core and is connected to the bottom surface of the overflowing rubber, and the overflowing rubber thimble cup head at the lower end of the overflowing rubber thimble slides in the chute, The cup head of the overflowing glue thimble is in contact with the cup head of the support column, and the lower end of the support column is in contact with the movable mold seat.

The present invention has beneficial effects: 1. Greatly improve the shrinkage problem at the thick glue position, and the weld line problem at the thick glue position; 2. Greatly improve the unsaturated glue problem at the thin glue position, and the thin glue position 3. Greatly improve problems such as trapped air and cold glue at the front of the end material flow.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of one of the present inventions, showing the state before glue filling.

Fig. 2 is a schematic diagram of Fig. 1 after glue replenishment.

Fig. 3 is a schematic diagram of the overall structure of the second invention, showing the state of the partial thin glue before forming.

Fig. 4 is a schematic diagram of the partial thin glue position in Fig. 3 after molding.

Fig. 5 is a schematic diagram of the overall structure of the third invention, showing the state before cutting overflow glue.

Fig. 6 is a schematic diagram of Fig. 5 after cutting the excess glue.

Fig. 7 is a schematic diagram of the static mold core of Fig. 1 .

Fig. 8 is a schematic diagram of the movable mold core of Fig. 1 .

Fig. 9 is a schematic diagram of the static mold core of Fig. 3 .

Fig. 10 is a schematic diagram of the movable mold core of Fig. 3 .

Fig. 11 is a schematic diagram of the static mold core of Fig. 5 .

Fig. 12 is a schematic diagram of the movable mold core of Fig. 5 .

In the figure: 1 electronic protection switch, 2 product thimble fixing plate, 3 screws, 4 product thimble, 41 product thimble cup head, 5 moving mold core, 51 via hole, 52 press-in glue amount, 53 product cavity, 54 product Ejector hole, 55 overflow hole, 56 thick glue position, 57 thin glue position, 6 static template, 7 products, 8 pressure glue rod, 81 pressure glue rod head, 9 overflow glue thimble, 91 overflow glue thimble cup head, 10 Glue overflow, 11 static mold seat, 12 support column, 121 support column cup head, 13 static mold core, 14 movable template, 15 return spring, 16 return rod, 17 mold foot, 18 product thimble top plate, 19 movable mold seat, 20 trash nails, 21 chute, 22 injection molding machine top stick, 23 inserts.

T1- the amount of glue injected.

T2 - the amount of glue injected.

T3 - the amount of glue injected.

T4- product thimble ejection amount.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Example 1

This mold (as shown in Figure 1, the state before glue replenishment) consists of a static mold base 11, a static template 6, a movable mold base 19, a movable template 14, a mold foot 17, an injection molding machine top roller 22 and a thick glue filling mechanism, etc. composition.

Static mold base 11 is provided with static template 6 below static template 6, is provided with static mold core 13 in static mold core 13, is provided with product mold cavity 53 in static mold core 13.

Die feet 17 are arranged on the movable mold base 19, a movable template 14 is arranged on the mold feet 17, a movable mold core 5 is arranged in the movable template 14, and product thimbles are arranged successively between the mold feet 17 from bottom to top. The top plate 18 and the product thimble fixing plate 2 are provided with a chute 21 on the product thimble fixing plate 2, and the product thimble 4 passes through the product thimble fixing plate 2 and the movable mold core 5 and connects to the bottom surface of the product 7, and the lower end of the product thimble 4 The thimble cup head 41 slides in the chute 21, the product thimble cup head 41 is in contact with the support column cup head 121 of the support column 12, and the lower end of the support column 12 is in contact with the movable mold base 19. Jack up the return rod 16 that separates the static formwork 6, and a return spring 15 is set on the return rod 16. A garbage nail 20 is provided between the product thimble top plate 18 and the movable mold base 19, and an electronic valve is also provided on the movable mold base 19. Protective switch 1, in the KO hole of the movable mold base 19, an injection molding machine top stick 22 that pushes the thimble top plate 18 of the product is provided, or an external oil cylinder is provided between the mold foot 17 and the static template 6, and the movable mold base 11, Die foot 17 and movable formwork 14 are fixed together by screw 3.

The glue replenishing mechanism includes a glue rod through hole 51 and a glue rod 8 in the core 5 of the movable mold. Enter the glue rod through hole 51 of the movable mold core 5, the glue rod through hole 51 communicates with the product cavity 53, there is a gap between the top of the glue rod and the bottom surface of the product, and a press-in hole is provided in the gap. The amount of glue is 52, and the glue rod 8 is used to push the glue 52 into the product cavity 53 to realize the glue replenishment to the thick glue position 56. The glue rod 8 is fixed in the product thimble fixing plate 2 through the glue rod cup head 81, The glue rod through hole 51 corresponds to the thick glue position 56 of the product.

working principle:

On the injection molding machine with closed mold ejection signal or with front mold core pulling signal, by setting the glue replenishing mechanism on the mold, the injection molding machine pushes the stick (or the oil cylinder outside the mold) during the injection process until the pressure holding is completed. The power provided by the ejection of the closed mold makes use of the good flow of thermoplastic in the molten state, and the amount of glue is injected into the thick glue position forcibly to replenish the glue, so as to maintain the pressure again and greatly improve the easy shrinkage and clamping of the local thick glue position. The good appearance effect of the line, and the holding pressure of the injection molding machine is smaller.

(See Figure 1), when the glue is injected and kept under pressure, the mechanism located under the local thick glue position of the product is in the state of retracting distance T1 at this time, and there is a feeding and compressed glue amount of T1 thickness on the surface of the product. the

(See Figure 2), after the injection and holding pressure are completed and before the cooling action, the mold is still in the closed state, the mechanism is driven by the top plate of the thimble to push out a distance T1, and a section of hot glue on the top surface of the mechanism is compressed and pressed into the glue amount The part of the thick rubber part of the incoming product compensates the center of the thick rubber part to form a hollow due to post-shrinkage, and the shrinkage is balanced without pulling the product into a shrinkage mark.

Example 2

This mold (as shown in Figure 3, the state before glue replenishment) is composed of a static mold base 11, a static template 6, a movable mold base 19, a movable template 14, a mold foot 17, an injection molding machine top roller 22 and a thin rubber-position forming mechanism, etc. .

Static mold base 11 is provided with static template 6 below static template 6, is provided with static mold core 13 in static mold core 13, is provided with product mold cavity 53 in static mold core 13.

Die feet 17 are arranged on the movable mold base 19, a movable template 14 is arranged on the mold feet 17, a movable mold core 5 is arranged in the movable template 14, and product thimbles are arranged successively between the mold feet 17 from bottom to top. The top plate 18 and the product thimble fixing plate 2 are provided with a chute 21 on the product thimble fixing plate 2, and the product thimble 4 passes through the product thimble fixing plate 2 and the movable mold core 5 and connects to the bottom surface of the product 7, and the lower end of the product thimble 4 The thimble cup head 41 slides in the chute 21, the thimble cup head 41 is in contact with the support column cup head 121 of the support column 12, the lower end of the support column 12 is in contact with the movable mold seat 19, and the ejector pin fixing plate 2 of the product is also provided with a Lift and separate the return rod 16 of the static formwork 6, the return spring 15 is set on the return rod 16, a garbage nail 20 is provided between the product thimble top plate 18 and the movable mold base 19, and an electronic protection device is also provided on the movable mold base 19. Switch 1, in the KO hole of the movable mold base 19, an injection molding machine top stick 22 that pushes the thimble top plate 18 of the product is provided, or an external oil cylinder is provided between the mold foot 17 and the static template 6, the movable mold base 19, the mold Foot 17 and movable formwork 14 are fixed together by screw 3;

The molding mechanism includes a rubber rod through hole 51 and a rubber rod 8 in the movable mold core 5, a rubber rod cup head 81 is provided at the lower end of the rubber rod 8, and the rubber rod 8 passes through the thimble fixing plate 2 of the product and enters The glue rod hole 51 of the movable mold core 5, the glue rod hole 51 is connected to the product cavity 53, there is a gap between the top of the glue rod 8 and the bottom surface of the product 7, and the glue rod is provided in the gap. Amount of 52, the glue rod 8 is ejected for a certain distance, so that the top surface of the glue rod 8 is flush with the molding surface of the product 7 to realize the thin glue position 57, and at the same time, the glue amount 52 is pushed into the product cavity 53, and the glue is pressed The rod 8 is fixed in the thimble fixing plate 2 of the product through the cup head 81 of the glued rod, and the through hole 51 of the glued rod corresponds to the thin glue position 57 of the product.

working principle:

On the injection molding machine with the ejection signal of the closed mold or the core-pulling signal of the front mold, by setting the molding mechanism on the mold, the ejector rod of the injection molding machine (or the oil cylinder outside the mold) will close The power provided by the ejection of the mold makes the local thin glue part thicker first, and then uses the thermoplastic to flow well in the molten state to forcibly reduce the glue, so as to achieve the molding of the local thin glue part, and greatly improve the difficult-to-fill glue that is easy to trap and easy to pinch. The good appearance effect of the line, and the injection pressure of the injection molding machine is smaller.

(See Figure 3), when the glue is injected and kept under pressure, the mechanism located under the local thin glue position of the product is in the state of the retreat distance T2 at this time, and there is a T2 thickness of pressed glue on the surface of the product. The shape of the top of the mechanism is the same as that of the product. Thin glue position The shape of the glue position on the side of the moving mold is consistent (as shown in the example, it is a spherical surface). At this time, there is a press-in glue volume under the thin glue position of the product, which is relatively thick and easy to form.

(See Figure 4), after the plastic injection is completed and before the cooling action, the mold is still in the closed state, and the mechanism is driven by the top plate of the thimble to push out a distance T2, and the amount of glue in the hot melt state is pressed into the product. The top surface of the mechanism is flush with the thin rubber part of the product on the side of the movable mold, so as to form the thin rubber part.

Example 3

This mold (as shown in Figure 5, the state before glue filling) consists of a static mold base 11, a static template 6, a movable mold base 19, a movable template 14, a mold foot 17, an injection molding machine top roller 22 and an automatic in-mold cutting overflow hole institutions etc.

Static mold base 11 is provided with static template 6 below static template 6, is provided with static mold core 13 in static mold core 13, is provided with product mold cavity 53 in static mold core 13.

Die feet 17 are arranged on the movable mold base 19, a movable template 14 is arranged on the mold feet 17, a movable mold core 5 is arranged in the movable template 14, and product thimbles are arranged successively between the mold feet 17 from bottom to top. The top plate 18 and the product thimble fixing plate 2 are provided with a chute 21 on the product thimble fixing plate 2, and the product thimble 4 passes through the product thimble fixing plate 2 and the movable mold core 5 and connects to the bottom surface of the product 7, and the lower end of the product thimble 4 The thimble cup head 41 slides in the chute 21, the thimble cup head 41 is in contact with the support column cup head 121 of the support column 12, the lower end of the support column 12 is in contact with the movable mold seat 19, and the ejector pin fixing plate 2 of the product is also provided with a Lift and separate the return rod 16 of the static formwork 6, the return spring 15 is set on the return rod 16, a garbage nail 20 is provided between the product thimble top plate 18 and the movable mold base 19, and an electronic protection device is also provided on the movable mold base 19. Switch 1, in the KO hole of the movable mold base 19, there is an injection molding machine top rod 22 that pushes the thimble top plate, or an external oil cylinder is provided between the mold foot 17 and the static template 6, the movable mold base 19, the mold foot 17 and the movable template 14 are fixed together by screws 3 .

The automatic in-mold cutting overflow cavity mechanism includes an overflow cavity 55, an overflow glue ejector 9, a glue rod through hole 51 and a glue rod 8 in the movable mold core 5: the overflow hole 55 is connected with the product type The edge of the bottom of the chamber 53 is overlapped, and the product 7 exhausts and discharges cold glue to the overflow hole 55, and the overflow hole 55 is also connected to the glue rod via hole 51; the lower end of the glue rod 8 is provided with a glue rod cup head 81, the pressure The glue rod 8 passes through the thimble fixing plate 18 of the product and enters the glue rod hole 51 of the movable mold core 5. The glue rod hole 51 communicates with the product cavity 53, and the top of the glue rod 8 and the bottom surface of the product 7 There is a gap between them, and the glue amount 52 is set in the gap, and the glue rod 8 pushes the glue amount 52 into the product cavity 53, and cuts off the overflow glue 10 in the overflow hole connected to the product 7 at the same time. , the glue rod 8 is fixed in the product thimble fixed plate 2 through the glue rod cup head 81; The top of the mold core 5 is connected to the bottom surface of the overflow glue 10, and the overflow glue thimble cup head 91 at the lower end of the overflow glue thimble 9 slides in the chute 21, and the overflow glue thimble cup head 91 contacts the support column cup head 121 of the support column 12, The lower end of the support column 12 is in contact with the movable mold base 19 .

working principle:

On the injection molding machine with the ejection signal of the closed mold or the core-pulling signal of the front mold, by setting the automatic in-mold cutting overflow hole mechanism on the mold, the top stick of the injection molding machine ( Or outside the mold oil cylinder) the power provided by the closed mold ejector, forcibly inject the amount of glue into the product, and at the same time, the mold is divided to connect the product with the overflow glue in the overflow hole, so that it can be set at any end position on the moving mold side of the product The overflow hole can greatly improve the problems of trapped air and cold glue, and the injection pressure of the injection molding machine is smaller.

(See Figure 5), when the glue is injected and the pressure is maintained, the mechanism located under the overflow is in the state of the retraction distance T3 at this time, and there is an amount of pressed glue with a thickness of T3 on the surface of the product.

(See Figure 6), after the plastic injection is completed and before the cooling action, the mold is still in the closed state, and the mechanism is driven by the top plate of the thimble to push out a distance T3, and the amount of glue in the hot melt state is pressed into the product. The top surface of the mechanism is flush with the moving mold side of the product, so as to disconnect the product from the overflow glue in the overflow hole. After the mold is opened, the ejector system will eject the product and the overflow glue together, so as to solve the problem of air-cooled glue The in-cutting function of the overflow cavity mold is added for problems such as overflow.

Claims (2)

1. A mold for replenishing local thick glue in the mold of an injection molding machine with a closed mold ejection signal or a front mold core-pulling signal, including a static mold base, a static mold plate, a dynamic mold base, a dynamic mold plate, mold feet, The top stick of injection molding machine is characterized by including partial thick glue filling, in which: A static template is provided below the static mold base, a static mold core is arranged in the static template, and a product cavity is arranged in the static mold core; The mold foot is provided on the movable mold base, the movable template is arranged on the mold foot, the movable mold core is arranged in the movable template, and the product thimble top plate and the product thimble are sequentially arranged between the mold feet from bottom to top. The fixed plate is provided with a chute on the thimble fixed plate of the product. The thimble of the product passes through the fixed plate of the thimble of the product and the core of the movable mold and is connected to the bottom surface of the product. The thimble cup head at the lower end of the product thimble slides in the chute. The head is in contact with the support column cup head of the support column, and the lower end of the support column is in contact with the movable mold seat. There is also a return rod on the product thimble fixing plate for jacking up and separating the static formwork. A return spring is set on the return rod. Garbage nails are set between the product thimble top plate and the movable mold base, and an electronic protection switch is provided on the movable mold base. In the KO hole of the movable mold base, there is an injection molding machine ejector that pushes the product thimble top plate, and the movable mold base , mold foot and movable template are fixed together by screws; There is also a glue filling mechanism for filling the thick glue position of the product in the core of the moving mold. The lower end is provided with the cup head of the glue rod, the glue rod passes through the thimble fixed plate of the product and enters the glue rod hole of the movable mold core, the hole of the glue rod communicates with the product cavity, the top of the glue rod and the product There is a gap between the bottom surfaces, and there is a glue filling in the gap. The glue pressing rod pushes the glue filling into the product cavity to realize the glue filling for the thick glue position. The glue pressing rod is fixed on the The product thimble is fixed in the plate. 2. The mold for filling the local thick glue position in the mold of the injection molding machine with the ejection signal of the closed mold or the core-pulling signal of the front mold with the signal of claim 1, it is characterized in that the corresponding product of the through hole of the pressure glue rod thick glue bit.

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