Die with built-in pre-resetting mechanism

Abstract

The utility model relates to a mould with a built-in pre-resetting mechanism, which comprises a front mould plate, a rear mould plate and an ejector plate, a driving rod is fixedly arranged on the front mould plate, a sliding hole matched with the driving rod is arranged on the rear mould plate, the driving rod is arranged in the sliding hole in a penetrating manner, and the ejector plate is arranged on the front mould plate. A return swing rod located between the rear mold plate and the ejector plate is hinged to the face, facing the ejector plate, of the rear mold plate, the length of the return swing rod is larger than the vertical distance from the hinge point of the return swing rod to the axis of the driving rod, and a penetrating hole aligned with the driving rod is formed in the ejector plate. According to the die with the built-in pre-reset mechanism, the pre-reset mechanism composed of the driving rod and the return swing rod is arranged in the die, so that the whole die is simpler and more attractive, the pre-reset mechanism is simple in structure, the machining precision is easy to control, machining is easy, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold with a built-in pre-reset mechanism. Background Art

[0002] When the mold is closed, in order to prevent the slider from interfering with the ejector, the ejector plate needs to be forcibly reset in advance. In the existing technology, the pre-reset mechanism of the ejector plate is set on the outer surface of the mold, resulting in the mold appearance not being streamlined and beautiful, and also requiring a mold release angle, which requires high processing accuracy and increases processing costs.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a mold with a built-in pre-reset mechanism, which solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A mold with a built-in pre-reset mechanism includes a front template, a rear template and an ejector plate, a driving rod is fixedly provided on the front template, a sliding hole matching the driving rod is provided on the rear template, the driving rod is passed through the sliding hole, a return rocker located between the rear template and the ejector plate is hinged on the surface of the rear template facing the ejector plate, the length of the return rocker is greater than the vertical distance from the hinge point of the return rocker to the axis of the driving rod, and a through hole aligned with the driving rod is provided on the ejector plate.

[0007] Preferably, an inverted U-shaped fixing block is embedded on the surface of the rear template facing the ejector plate, the fixing block is fixedly connected to the rear template by bolts, and the end of the return rocker arm is hinged between the two vertical parts of the fixing block by a cylindrical pin.

[0008] Preferably, a receiving groove for receiving the return rocker arm is provided on the surface of the rear template facing the ejector plate, and the fixing block is embedded in the bottom of the receiving groove.

[0009] Preferably, the driving rod is in the shape of a T-rod, and the driving rod is passed through the front template. A fastening cover plate for pressing the large end of the driving rod is fixedly connected to the surface of the front template away from the rear template by bolts.

[0010] Preferably, a contact plane facing the return rocker is formed on the peripheral side surface of the driving rod, and the free end of the return rocker is in an arc shape.

[0011] Preferably, two driving rods and two return rocker rods are symmetrically arranged.

[0012] To sum up, the beneficial effect of the present invention is that by arranging the pre-reset mechanism composed of the driving rod and the return rocker arm inside the mold, the mold as a whole becomes more streamlined and beautiful, and the pre-reset mechanism has a simple structure, the precision during processing is easy to control and easy to process, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the fixed block, the return rocker and the driving rod in the utility model.

[0016] In the figure: 1. front template; 2. rear template; 21. sliding hole; 22. receiving groove; 3. ejector plate; 31. through hole; 4. driving rod; 41. contact plane; 5. return rocker; 6. fixing block; 7. fastening cover. DETAILED DESCRIPTION

[0017] The following is a combination of the appended examples of the present invention Figure 1-2 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] As shown in the figure, a mold with a built-in pre-reset mechanism includes a front template 1, a rear template 2 and an ejector plate 3. A driving rod 4 is fixedly provided on the front template 1, and a sliding hole 21 is provided on the rear template 2, which matches the driving rod 4 and passes through the front template 1. The driving rod 4 is penetrated into the sliding hole 21. A return rocker 5 located between the rear template 2 and the ejector plate 3 is hinged on the surface of the rear template 2 facing the ejector plate 3. The length of the return rocker 5 is greater than the vertical distance from the hinge point of the return rocker 5 to the axis of the driving rod 4. The ejector plate 3 is provided with a through hole 31 aligned with the driving rod 4.

[0019] Specifically, the return rocker arm 5 is hinged to the structure on the rear template 2: an inverted U-shaped fixing block 6 is embedded on the surface of the rear template 2 facing the ejector plate 3, and the fixing block 6 is fixedly connected to the rear template 2 by bolts. The end of the return rocker arm 5 is hinged between the two vertical parts of the fixing block 6 by a cylindrical pin. Through the above structure, the fixing block 6 and the return rocker arm 5 can be easily disassembled and assembled, thereby facilitating operations during mold assembly and maintenance.

[0020] Specifically, the drive rod 4 is fixedly arranged on the front template 1: the drive rod 4 is in the shape of a T-rod, and the drive rod 4 is passed through the front template 1. The surface of the front template 1 away from the rear template 2 is fixedly connected with a fastening cover plate 7 by bolts for pressing the large end of the drive rod 4. The above structure ensures the stability of the drive rod 4 while enabling the drive rod 4 to be easily disassembled and assembled, thereby facilitating operations during mold assembly and maintenance.

[0021] In the above structure, when the ejector plate 3 is ejected after the front template 1 and the rear template 2 are separated, the ejector plate 3 is driven by the ejector rod of the injection molding machine to move toward the rear template 2 and push the return rocker rod 5 to swing toward the rear template 2, so that the return rocker rod 5 swings to one side of the end of the sliding hole 21. When the front template 1 moves toward the rear template 2 to close the mold, the driving rod 4 slides in the sliding hole 21 with the front template 1, so that the end of the driving rod 4 passes through the sliding hole 21 and abuts against the return rocker rod 5, driving the return rocker rod 5 to swing toward the ejector plate 3, so that the return rocker rod 5 pushes the ejector plate 3 away from the rear template 2 and penetrates the through hole at the end of the driving rod 4. 31 and when the return rocker arm 5 swings to the end portion against the side surface of the driving rod 4, the ejector plate 3 is reset to its original position under the action of the return rocker arm 5. At this time, the front template 1 and the rear template 2 are not completely closed, thereby realizing the forced early reset of the ejector plate 3, ensuring the stability and smoothness of subsequent actions. This mold with a built-in pre-reset mechanism can be made more streamlined and beautiful by arranging the pre-reset mechanism composed of the driving rod 4 and the return rocker arm 5 inside the mold. In addition, the pre-reset mechanism has a simple structure, is easy to control the precision during processing, and is easy to process, thereby reducing the production cost.

[0022] In addition, a receiving groove 22 for accommodating the return rocker 5 is provided on the surface of the rear template 2 facing the ejector plate 3, and the fixed block 6 is embedded in the bottom of the receiving groove 22. When the ejector plate 3 is ejected after the front template 1 and the rear template 2 are separated, the ejector plate 3 is ejected to a position in contact with the rear template 2, so that the return rocker 5 is swung and accommodated in the receiving groove 22 to fit with the end of the sliding hole 21, thereby reducing the internal space of the mold occupied by the swing of the return rocker 5 and making the overall structure of the mold more compact.

[0023] In addition, a contact plane 41 facing the return rocker 5 is formed on the side surface of the driving rod 4. The free end of the return rocker 5 is arc-shaped. When the end of the driving rod 4 penetrates into the through-hole 31, the arc-shaped end of the return rocker 5 abuts against the contact plane 41. The contact plane 41 supports the return rocker 5, thereby enhancing the stability of the return rocker when the driving rod 4 continues to move relative to the return rocker 5 in the through-hole 31 to achieve complete mold closing, thereby enhancing the stability of the ejector plate 3 after it is reset.

[0024] In addition, two driving rods 4 and two return rocker rods 5 are symmetrically provided, which increases the point of action of the force acting on the ejector plate 3 to force it to reset first, thereby ensuring the stability of the ejector plate 3 when it is forced to reset first.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mold with a built-in pre-reset mechanism, comprising a front template (1), a rear template (2) and an ejector plate (3), characterized in that: A driving rod (4) is fixedly provided on the front template (1), a sliding hole (21) matching the driving rod (4) is provided on the rear template (2), the driving rod (4) is passed through the sliding hole (21), a return rocker (5) located between the rear template (2) and the ejector plate (3) is hinged on the surface of the rear template (2) facing the ejector plate (3), the length of the return rocker (5) is greater than the vertical distance from the hinge point of the return rocker (5) to the axis of the driving rod (4), and a through hole (31) aligned with the driving rod (4) is provided on the ejector plate (3).

2. The mold with a built-in pre-reset mechanism according to claim 1, characterized in that: An inverted U-shaped fixing block (6) is embedded on the surface of the rear template (2) facing the ejector plate (3), and the fixing block (6) is fixedly connected to the rear template (2) by bolts. The end of the return rocker (5) is hinged between the two vertical parts of the fixing block (6) by a cylindrical pin.

3. The mold with a built-in pre-reset mechanism according to claim 2, characterized in that: A receiving groove (22) for receiving the return rocker (5) is provided on the surface of the rear template (2) facing the ejector plate (3), and the fixing block (6) is embedded in the bottom of the receiving groove (22).

4. The mold with a built-in pre-reset mechanism according to claim 3, characterized in that: The driving rod (4) is in the shape of a T-rod and is passed through the front template (1). A fastening cover plate (7) for pressing the large end of the driving rod (4) is fixedly connected to the surface of the front template (1) away from the rear template (2) by bolts.

5. The mold with a built-in pre-reset mechanism according to claim 4, characterized in that: A contact plane (41) facing the return rocker (5) is formed on the peripheral side of the driving rod (4), and the free end of the return rocker (5) is in an arc shape.

6. The mold with a built-in pre-reset mechanism according to claim 1, characterized in that: Two driving rods (4) and two return rocker rods (5) are symmetrically arranged.

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