Sliding block type ejection structure of plastic-iron integrated injection mold

Abstract

The utility model discloses a sliding block type ejection structure of a plastic-iron integrated injection mold, which comprises a front mold and a rear mold arranged below the front mold, and a mold cavity for plastic-iron molding is formed between the parting surfaces of the front mold and the rear mold; the four sliding blocks are mounted on the four sides of the rear mold core correspondingly and can slide towards the mold cavity; and the base columns are mounted on the four sides of the front mold core, the bottom ends of the base columns incline in the direction deviating from the center of the rear mold, and the base columns extend into the corresponding sliding blocks correspondingly. According to the principle that the base column moves along with the upper die, the four sliding blocks are driven to be away from the die cavity synchronously, so that the periphery of a plastic iron product is not wrapped any more, the wrapping force is reduced, the ejector pin with the flat top end avoids concentrated stress at the bottom of the plastic iron product, and the ejector pin and the ejector pin act together, so that when the plastic iron product is ejected out, the wrapping force is small, and the stress on the bottom surface is dispersed; deformation is not prone to occurring, and the production quality is guaranteed.

Description

Technical Field

[0001] The utility model specifically relates to a slider type ejection structure of a rubber-iron integrated injection mold. Background Art

[0002] Glue-iron is a composite material of glue and iron. In the process of glue-iron integrated injection molding, the molten glue for injection molding needs to enter the mold cavity through the preset gate runner. After the glue-iron product is cooled and formed, the ejector is used to eject the injected glue-iron product from the mold core.

[0003] However, when the existing ferromagnetic injection mold ejects the ferromagnetic product, the periphery of the ferromagnetic product is easily deformed due to the large clamping force applied to the ferromagnetic product, which requires subsequent trimming and has low production quality.

[0004] Therefore, it is necessary to invent a slider type ejection structure of a rubber-iron integrated injection mold to solve the above problems. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a slider type ejection structure of a rubber-iron integrated injection mold. Through the principle of the base column following the upper mold, four sliders are driven to synchronously move away from the mold cavity, so that the periphery of the rubber-iron product is no longer wrapped, the clamping force is reduced, and the flat ejector pin at the top avoids the concentration of force on the bottom of the rubber-iron product. The two work together, so that when the rubber-iron product is ejected, the clamping force is small, the force on the bottom surface is dispersed, and it is not easy to deform, thereby ensuring its production quality.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slider-type ejection structure of a rubber-iron integrated injection mold, comprising a front mold and a rear mold arranged below the front mold, wherein a mold cavity for rubber-iron molding is formed between the parting surfaces of the front mold and the rear mold;

[0009] There are four sliders, which are respectively installed on four sides of the rear mold core and can slide toward the mold cavity;

[0010] Base columns are installed on four sides of the front mold core, and the bottom ends are inclined away from the center direction of the rear mold and extend to the inside of the corresponding sliders respectively. When the front mold is separated from the rear mold, the four sliders can be driven to slide to the outside of the mold cavity at the same time to control the clamping force of the rubber-iron product;

[0011] The ejector pin is arranged inside the rear mold and can move upward toward the mold cavity to eject the rubber-iron product after it is solidified and formed.

[0012] Preferably, at least six base columns are provided, wherein two base columns are respectively provided on the left and right sides of the rear mold core, and the other four base columns are respectively provided in groups of two on the front and rear sides of the rear mold core.

[0013] Preferably, the two sliders located on the long sides of the rubber-iron product, i.e., the front and rear sides of the rear mold core, are extended, and a base hole for inserting a base column is provided on the top of each slider, and the number of base holes on the sliders located on the front and rear sides of the rear mold core is two.

[0014] Preferably, the ejector pins are provided in a plurality and are evenly spaced along the rear edge and the left and right sides of the rubber-iron product.

[0015] Preferably, the bottom cross-section of each ejector pin is configured to be convex, and the top is configured to be flat.

[0016] Preferably, an ejector plate for pushing the ejector upwards is installed at the bottom of the rear mold core.

[0017] Preferably, the ejector plate comprises an upper ejector plate and a lower ejector plate located below the upper ejector plate, and the bottom end of each ejector pin passes through the upper ejector plate and contacts the top surface of the lower ejector plate.

[0018] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0019] The utility model provides sliders which can slide away from the mold cavity on the four sides of the mold cavity. Before the wrought iron product is solidified and ejected by the ejector pin, that is, when the parting surface is opened, the base column is also driven upward by the upper mold due to the distance of the upper mold, and then the four sliders are driven to synchronously move away from the mold cavity. At this time, the periphery of the wrought iron product is no longer wrapped, the clamping force is reduced, and the ejector pin with a flat top has a large contact area with the wrought iron product, which avoids the wrought iron product from being subjected to concentrated force at the bottom, thereby reducing the phenomenon of deformation of the wrought iron product due to the large clamping force and concentrated force on the bottom surface when the wrought iron product is ejected, thereby ensuring its production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the ejector pin distribution of the utility model;

[0023] Figure 3 This is a schematic diagram of the distribution of the sliders of the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the utility model.

[0025] Description of reference numerals:

[0026] 1 front mold, 2 rear mold, 3 slider, 4 base column, 5 ejector pin, 6 base hole, 7 ejector pin plate, 8 upper ejector plate, 9 lower ejector plate. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-4 The slider-type ejection structure of a plastic-iron integrated injection mold shown in the figure comprises a front mold 1 and a rear mold 2 arranged below the front mold 1, and a mold cavity for plastic-iron molding is formed between the parting surfaces of the front mold 1 and the rear mold 2;

[0029] Slide blocks 3 are provided in four numbers and are respectively installed on four sides of the mold core of the rear mold 2 and can slide toward the mold cavity;

[0030] Base columns 4 are installed on four sides of the mold core of the front mold 1, and the bottom ends are inclined away from the center direction of the rear mold 2, and extend to the inside of the corresponding sliders 3 respectively. When the front mold 1 is separated from the rear mold 2, the four sliders 3 can be driven to slide toward the outside of the mold cavity at the same time to control the clamping force of the rubber-iron product;

[0031] The ejector pin 5 is arranged inside the rear mold 2 and can move upward toward the mold cavity to eject the rubber-iron product after it is solidified.

[0032] In one embodiment, at least six base columns 4 are provided, wherein two base columns 4 are respectively provided on the left and right sides of the mold core of the rear mold 2, and the other four base columns 4 are respectively provided in groups of two on the front and rear sides of the mold core of the rear mold 2, wherein two of the sliders 3 located on the long sides of the rubber-iron product, i.e., on the front and rear sides of the mold core of the rear mold 2, are lengthened, and a base hole 6 for inserting the base column 4 is provided on the top of each slider 3, and two base holes 6 on the sliders 3 located on the front and rear sides of the mold core of the rear mold 2 are provided, so that the slider 3 is relatively stable when moving and will not tilt.

[0033] In one embodiment, the number of ejector pins 5 is set to be several, and they are evenly spaced along the back and left and right sides of the wrought iron product. The bottom cross-section of each ejector pin 5 is set to be convex, and the top is set to be flat, which increases the contact area between the top of the ejector pin 5 and the wrought iron product, and avoids deformation of the bottom of the wrought iron product due to concentrated force when being ejected.

[0034] In one embodiment, an ejector plate 7 for pushing the ejector 5 to eject upward is installed at the bottom of the mold core of the rear mold 2. The ejector plate 7 includes an upper ejector plate 8 and a lower ejector plate 9 located below the upper ejector plate 8. The bottom end of each ejector 5 passes through the upper ejector plate 8 and contacts the top surface of the lower ejector plate 9, so as to drive the ejector 5 to move upward to eject the rubber-iron product.

[0035] The specific implementation method is as follows: when the utility model is used, the steel plate used for forming is directly placed in the mold cavity, and then the molten glue is injected into the mold cavity through the gate. After the molten glue is cooled and solidified, that is, when the glue-iron product is formed, the front mold 1 starts to move away from the rear mold 2, so that the parting surface is opened;

[0036] At this time, due to the upward movement of the upper mold, each base column 4 is driven to move upward, and due to the inclined design of the base column 4, the four sliders 3 are synchronously moved away from the mold cavity, that is, the outer side of the mold cavity slides, and then away from the periphery of the rubber iron product. The periphery of the rubber iron product is no longer wrapped, that is, there is no obstruction around it, so that the clamping force on the rubber iron product is reduced, thereby reducing the phenomenon of damage to the rubber iron product due to the large clamping force when ejecting, avoiding deformation of the rubber iron product, and ensuring its production quality;

[0037] At this time, under the action of the ejector plate 7, the top of the ejector pin 5 moves upward to eject the rubber iron product, and because the top of the ejector pin 5 is flat, the contact area between the ejector pin 5 and the rubber iron product is large, which avoids the force concentration on the bottom of the rubber iron product and prevents the ejector pin 5 from damaging the bottom of the rubber iron product when it is ejected.

[0038] This embodiment specifically solves the problem in the prior art that when the current wrought iron injection mold ejects the wrought iron product, the wrought iron product is subjected to a large clamping force, its periphery is easily deformed, requires subsequent trimming, and has low production quality.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A slider-type ejection structure of a rubber-iron integrated injection mold, characterized in that: include: A front mold (1), and a rear mold (2) arranged below the front mold (1), wherein a mold cavity for forming the glue iron is formed between the parting surfaces of the front mold (1) and the rear mold (2); Four sliders (3) are provided, which are respectively mounted on four sides of the mold core of the rear mold (2) and can slide towards the mold cavity; Base columns (4) are installed on four sides of the mold core of the front mold (1), and the bottom ends are inclined away from the center direction of the rear mold (2) and extend to the inside of the corresponding sliders (3) respectively. When the front mold (1) and the rear mold (2) are separated, the four sliders (3) can be driven to slide toward the outside of the mold cavity at the same time to control the clamping force of the rubber-iron product; An ejector pin (5) is arranged inside the rear mold (2) and can move upward toward the mold cavity to eject the rubber-iron product after it is solidified.

2. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 1, characterized in that: At least six base columns (4) are provided, of which two base columns (4) are respectively provided on the left and right sides of the mold core of the rear mold (2), and the other four base columns (4) are respectively provided in groups of two on the front and rear sides of the mold core of the rear mold (2).

3. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 2, characterized in that: in, The two sliders (3) located on the long sides of the rubber-iron product, i.e., on the front and rear sides of the mold core of the rear mold (2), are extended, and a base hole (6) for inserting a base column (4) is provided on the top of each slider (3), and the number of base holes (6) on the sliders (3) located on the front and rear sides of the mold core of the rear mold (2) is two.

4. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 1, characterized in that: The ejector pins (5) are provided in a plurality and are evenly spaced along the rear edge and the left and right sides of the rubber-iron product.

5. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 1, characterized in that: The bottom cross-section of each ejector pin (5) is configured to be convex, and the top is configured to be flat.

6. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 4, characterized in that: An ejector plate (7) for pushing the ejector pin (5) upwards is installed at the bottom of the mold core of the rear mold (2).

7. The slider type ejection structure of the rubber-iron integrated injection mold according to claim 6, characterized in that: The ejector plate (7) comprises an upper ejector plate (8) and a lower ejector plate (9) located below the upper ejector plate (8), and the bottom end of each ejector pin (5) passes through the upper ejector plate (8) and contacts the top surface of the lower ejector plate (9).

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