Four-side inclined ejector ejection structure of plastic-iron integrated injection mold

Abstract

The utility model discloses a four-side inclined top ejection structure of a plastic-iron integrated injection mold. The four-side inclined top ejection structure comprises a front mold and a rear mold arranged below the front mold, the plate B is arranged on the parting surface of the rear mold, and a mold cavity for molding a plastic iron product is formed between the plate B and the parting surface of the front mold; the number of the pitched roofs is four, and the pitched roofs are installed on the four edges of the plate B respectively; and the angle ejector rods are arranged at the bottoms of the angle ejectors, and the top ends of the angle ejector rods incline in the direction deviating from the center of the plate B. According to the utility model, the lower ejector pin plate drives the inclined ejector rod to move upwards, and under the influence of the inclined holes, the inclined ejector rod moves upwards and is far away from the center of the B plate, so that the four inclined ejectors are far away from each other outwards to generate gaps while ejecting a rubber-iron product, the wrapping force on the rubber-iron product is reduced, and the rubber-iron product leaves the outer contour of the rubber-iron product; when the plastic iron product is ejected, the packaging force is small, and the four corners are not stressed, so that the ejection convex phenomenon is avoided, and the product yield is high.

Description

Technical Field

[0001] The utility model specifically relates to a four-sided inclined 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, existing plastic injection molds usually use a large middle ejector block or ejector pin to eject the plastic product. After the plastic product is solidified, there is a large clamping force on the four sides. This ejection method makes the four corners of the plastic product easily bulge due to the force, resulting in product defects.

[0004] Therefore, it is necessary to invent a four-sided inclined 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 four-sided inclined ejector structure of a rubber-iron integrated injection mold, in which the inclined ejector rod is driven upward by the lower ejector plate, and under the influence of the inclined hole, the inclined ejector rod is moved upward while moving away from the center of plate B, so that the four inclined ejectors lift the rubber-iron product while moving away from each other outward to produce a gap, thereby reducing the clamping force on the rubber-iron product and leaving the outer contour of the rubber-iron product, so that the rubber-iron product has a small clamping force when being ejected, and the four corners are not subjected to force, so there will be no bulging phenomenon, and the product yield is high.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-sided inclined ejection structure of a rubber-iron integrated injection mold,

[0009] It comprises a front mold and a rear mold arranged below the front mold;

[0010] The B plate is arranged on the parting surface of the rear mold, and a mold cavity for forming the rubber-iron product is formed between the B plate and the parting surface of the front mold;

[0011] There are four inclined roofs, which are respectively installed on the four sides of the B plate;

[0012] The inclined top rod is arranged at the bottom of each inclined top, and the top end is inclined away from the center direction of the B plate:

[0013] The lower ejector plate is arranged below the B plate, and is used to drive each of the inclined ejector rods to slide in the width direction of the inclined ejector above it, and at the same time drive the top end of each inclined ejector rod to move upward in the direction of the parting surface of the B plate, thereby reducing the tightening force of the rubber-iron product and ejecting the rubber-iron product.

[0014] Preferably, the rear mold includes, from bottom to top, a male mold plate, an upper ejector plate, the lower ejector plate, and a bottom plate, and the B plate is arranged on the top of the male mold plate.

[0015] Preferably, a moving block is installed at the bottom end of each inclined ejector rod, the long side of the moving block is parallel to the width direction of the inclined ejector at its top, and the moving block is in contact with the top of the lower ejector plate.

[0016] Preferably, a clearance groove is provided inside the upper ejector plate at each moving block, so that each moving block can slide along its own long side direction inside the upper ejector plate.

[0017] Preferably, sliders are installed on the four sides of the top of the male template, and the four sliders are respectively located on the outer sides of the four inclined tops.

[0018] Preferably, a plurality of base columns are installed on four sides of the front mold parting surface, the bottom end of each base column extends to the inside of the slider below it, and the bottom end of each base column is inclined away from the center direction of the B plate.

[0019] Preferably, each of the sliding blocks is provided with an inclined hole on the top for inserting the base column, each of the male template and the inside of the B plate is also provided with an inclined hole for inserting the inclined push rod, and the diameter of each of the inclined holes for accommodating the inclined push rod is larger than the outer diameter of the inclined push rod.

[0020] Preferably, a groove is provided at the middle bottom of each inclined roof, and a slide rail is connected to the top of each of the B plates at the giving way groove, so that the inclined roof can be translated along its own width direction.

[0021] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0022] After the glue iron product is solidified, the parting surface between the front mold and the B plate is opened. At this time, the lower ejector plate at the bottom of the rear mold drives the inclined ejector rod to move upward, thereby driving the four inclined ejectors to move upward to lift the periphery of the glue iron product. At the same time, as the inclined ejector rod moves upward, a horizontal outward thrust is generated under the influence of the inclined hole, thereby causing the inclined ejector rod to move outward away from the center of the B plate, thereby causing the four inclined ejectors to push the glue iron product upward while moving away from each other outward to generate gaps, thereby reducing the clamping force on the glue iron product and leaving the outer contour of the glue iron product, so that when the glue iron product is ejected, the clamping force is small and the four corners are not subjected to force, so there will be no bulging phenomenon, and the product yield is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a half-section view of the rear mold of the utility model;

[0025] Figure 2 It is a three-dimensional diagram of the rear mold of the utility model;

[0026] Figure 3 It is a schematic diagram of the connection structure between the moving block and the upper ejector plate of the utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure of the B plate and the inclined roof of the utility model;

[0028] Figure 5 It is a three-dimensional diagram of the utility model;

[0029] Figure 6 It is a front cross-sectional view of the stereogram of the utility model.

[0030] Description of reference numerals:

[0031] 1 front mold, 2 rear mold, 3 B plate, 4 inclined ejector, 5 inclined ejector rod, 6 lower ejector plate, 7 male mold plate, 8 upper ejector plate, 9 bottom plate, 10 moving block, 11 slider, 12 base column, 13 slide rail. DETAILED DESCRIPTION

[0032] 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.

[0033] The utility model provides Figure 1-6 The four-sided inclined ejection structure of a rubber-iron integrated injection mold shown in the figure comprises a front mold 1 and a rear mold 2 arranged below the front mold 1;

[0034] The B plate 3 is arranged on the parting surface of the rear mold 2, and a mold cavity for forming the rubber-iron product is formed between the B plate 3 and the parting surface of the front mold 1;

[0035] There are four inclined roofs 4, which are respectively installed on the four sides of the B plate 3;

[0036] The inclined ejector rod 5 is arranged at the bottom of each of the inclined ejectors 4, and the top end is inclined away from the center direction of the B plate 3, so that when the lower ejector plate 6 drives the inclined ejector rod 5 to move upward, the inclined ejector rod 5 can slide away from the center of the B plate 3 at the same time:

[0037] The lower ejector plate 6 is arranged below the B plate 3, and is used to drive each of the inclined ejector rods 5 to slide in the width direction of the inclined ejector rod 4 above it, and at the same time drive the top end of each of the inclined ejector rods 5 to move upward in the direction of the parting surface of the B plate 3, thereby reducing the tightening force of the rubber iron product and ejecting the rubber iron product;

[0038] The rear mold 2 includes a male mold plate 7, an upper ejector plate 8, a lower ejector plate 6, and a bottom plate 9 from bottom to top, and the B plate 3 is arranged on the top of the male mold plate 7.

[0039] In one embodiment, a moving block 10 is installed at the bottom end of each of the inclined ejector rods 5, and the long side of the moving block 10 is parallel to the width direction of the inclined ejector rod 4 at its top, which is convenient for the movement of the inclined ejector rod 5 and can ensure that the inclined ejector rod 5 will not be offset when moving. The moving block 10 is in contact with the top of the lower ejector plate 6, and a clearance groove is opened inside the upper ejector plate 8 at each moving block 10, so that each of the moving blocks 10 can slide along its own long side direction inside the upper ejector plate 8.

[0040] In one embodiment, sliders 11 are installed on all four sides of the top of the male mold plate 7, and the four sliders 11 are respectively located on the outsides of the four inclined tops 4. A number of base columns 12 are installed on the four sides of the parting surface of the front mold 1, and the bottom end of each base column 12 extends to the inside of the slider 11 below it, and the bottom end of each base column 12 is inclined away from the center direction of the B plate 3, so that when the parting surface of the front mold 1 and the B plate 3 is opened, the base column 12 can force the slider 11 to move outward, and the outward movement of the slider 11 can initially reduce the clamping force on the rubber-iron product.

[0041] In one embodiment, each of the sliders 11 is provided with an inclined hole on the top for inserting the base column 12, and each of the male mold plate 7 and the B plate 3 is also provided with an inclined hole inside for inserting the inclined ejector rod 5, and the diameter of each of the inclined holes for accommodating the inclined ejector rod 5 is larger than the outer diameter of the inclined ejector rod 5. When the front mold 1 and the rear mold 2 are opened, the inclined hole can force the slider 11 and the lower ejector plate 6 can force the inclined ejector rod 5 to translate.

[0042] In one embodiment, a groove is provided at the middle bottom of each of the inclined roofs 4, and a slide rail 13 is connected to the top of each of the B plates 3 at the make way grooves, allowing the inclined roof 4 to translate along its own width direction, further ensuring the stability of the inclined roof 4 during movement without any deviation.

[0043] 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, that is, on the top of the B plate 3, such as Figure 3 As shown, at the same time, only three of the four sides of the steel plate-formed glue-iron product have glue positions, which are located at the rear side and the left and right sides of the B plate 3, respectively. Two base columns 12 are plugged into the two sliders 11 located at the rear side and the front side of the B plate 3. The sliders 11 located at the left and right sides of the B plate 3 are short in length, so one base column 12 can ensure that the sliders 11 will not deviate when moving, so only one base column 12 is plugged in. Specifically, at the beginning of the injection molding process, the injection port of the external injection molding machine reaches the inside of the nozzle at the top of the front mold 1, and then the molten glue is injected. After the molten glue flows into the mold cavity and cools and solidifies, the glue-iron product can be formed;

[0044] At this time, the parting surface between the front mold 1 and the B plate 3 is opened, and the front mold 1 moves up while driving the base column 12 to move up. Since the base column 12 is inserted into the slider 11 in an inclined manner, the four sliders 11 will be subjected to the horizontal thrust generated when the base column 12 moves up, and will synchronously move away from the center of the B plate 3 and slide outward. The distance is 7 mm, making way for the outward movement of the inclined top 4.

[0045] At the same time, the lower ejector plate 6 at the bottom of the rear mold 2 moves up, driving the inclined ejector rod 5 to move up, and then driving the four inclined ejectors 4 to move up, and lift the periphery of the rubber iron product. When the inclined ejector rod 5 moves up, it will be limited by the inclined hole in the sub-mold and the B plate 3, and will also decompose a horizontal outward thrust, so that the inclined ejector rod 5 moves outward away from the center of the B plate 3, and the distance stroke is 3mm, thereby driving the inclined ejector 4 to move outward away from the center of the B plate 3, so that each inclined ejector 4 pushes the rubber iron product upward and moves outward, and the four inclined ejectors 4 are away from each other at the corners, resulting in a gap, so that the periphery of the inclined ejector 4 leaves the outer contour of the rubber iron product, which can greatly reduce the clamping force on the rubber iron product. At the same time, the generation of the gap makes the four corners of the rubber iron product no longer subject to the top force, so that the rubber iron product will not have a top bulge when it is ejected, and the product yield is high;

[0046] This embodiment specifically solves the problem in the prior art that the current wrought iron injection mold usually uses a large middle ejector block or ejector pin to eject the wrought iron product. After the wrought iron product is solidified, there is a large clamping force on the four sides. This ejection method makes the four corners of the wrought iron product easily bulge due to the force, resulting in defective products.

[0047] 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 four-sided inclined 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); The B plate (3) is arranged on the parting surface of the rear mold (2), and forms a mold cavity for molding the rubber-iron product between the B plate and the parting surface of the front mold (1); There are four inclined roofs (4), which are respectively installed on the four sides of the B plate (3); The inclined top rod (5) is arranged at the bottom of each inclined top (4), and the top end is inclined away from the center direction of the B plate (3): The lower ejector plate (6) is arranged below the B plate (3) and is used to drive each of the inclined ejector rods (5) to slide in the width direction of the inclined ejector rod (4) above it and simultaneously drive the top end of each of the inclined ejector rods (5) to move upward in the direction of the parting surface of the B plate (3), thereby reducing the tightening force of the rubber-iron product and ejecting the rubber-iron product.

2. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 1, characterized in that: The rear mold (2) comprises, from bottom to top, a male mold plate (7), an upper ejector plate (8), the lower ejector plate (6), and a bottom plate (9), and the B plate (3) is arranged on the top of the male mold plate (7).

3. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 2, characterized in that: A moving block (10) is mounted at the bottom end of each inclined ejector rod (5), the long side of the moving block (10) being parallel to the width direction of the inclined ejector rod (4) at the top thereof, and the moving block (10) being in contact with the top of the lower ejector pin plate (6).

4. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 3, characterized in that: A clearance groove is provided inside the upper ejector plate (8) at each moving block (10), so that each moving block (10) can slide inside the upper ejector plate (8) along its own long side direction.

5. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 2, characterized in that: Slide blocks (11) are installed on the four sides of the top of the male template (7), and the four slide blocks (11) are respectively located on the outside of the four inclined tops (4).

6. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 5, characterized in that: A plurality of base columns (12) are installed on four sides of the parting surface of the front mold (1), the bottom end of each base column (12) extends into the interior of the slider (11) below it, and the bottom end of each base column (12) is inclined away from the center direction of the B plate (3).

7. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 6, characterized in that: Each of the sliders (11) has an inclined hole at the top into which the base column (12) can be inserted, and each of the male mold plate (7) and the B plate (3) also has an inclined hole inside into which the inclined ejector rod (5) can be inserted, and the diameter of each of the inclined holes for accommodating the inclined ejector rod (5) is larger than the outer diameter of the inclined ejector rod (5).

8. The four-sided inclined ejection structure of the rubber-iron integrated injection mold according to claim 1, characterized in that: A groove is provided at the middle bottom of each inclined top (4), and a slide rail (13) is connected to the top of each clearance groove of the B plate (3), so that the inclined top (4) can be translated along its width direction.

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