Pressing plate stroke control mechanism for die

Abstract

The utility model discloses a press plate stroke control mechanism for a die, which relates to the technical field of stroke control mechanisms and comprises a bottom plate, an upper die holder and a stroke control mechanism, the stroke control mechanism comprises a concentric-square-shaped plate, the concentric-square-shaped plate is mounted on the bottom surface of the upper die holder through bolts, and a round rod is fixedly connected to the inner wall of a mounting groove. The outer surface of the round rod is rotationally connected with a stroke control plate, the interior of the stroke control plate is rotationally connected with a steel ball, the inner wall of the mounting groove is fixedly connected with a rubber strip and a limiting block, and a rubber pad is mounted on the limiting block. Through the arranged stroke control mechanism, hard contact and abrasion between the stroke control mechanism and the lower die base are effectively avoided, so that the service life is greatly prolonged, meanwhile, through the arrangement of steel balls, friction of the stroke control plate in the rotating process is reduced, the service life of the mechanism is further prolonged, and the working stability of the mechanism is further improved; the buffering effect of the rubber pad and the anti-friction design of the rubber strip provide effective protection for protecting the stroke control mechanism from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of stroke control mechanisms, and particularly relates to a stroke control mechanism for a pressing plate of a mold. Background Technique

[0002] Because stretch forming is applicable to all walks of life and has a wide range of applications, it is a relatively common process in the stamping process. At present, stretch forming is generally realized on hydraulic equipment through stretch molds.

[0003] The patent with the application number 201920527205.3 discloses a stroke control mechanism for a pressing plate of a stretch mold. The stroke control mechanism for a pressing plate of a stretch mold includes a base. A hydraulic rod is fixedly installed on the upper surface of the base near the edge position. A lower mold fixing plate is fixedly installed on the upper surface of the base near the hydraulic rod. A lower mold base is fixedly installed on the upper surface of the lower mold fixing plate.

[0004] The above scheme solves the disadvantages that the hydraulic equipment controls the stroke of the pressing plate through the hydraulic rod, such as the slower opening and closing speeds of the mold, the smaller and unstable clamping pressure, and at the same time, the problems of lower production efficiency and poorer product forming quality. However, in the above scheme, during long-term operation, the stroke control plate will intermittently contact the lower mold base, resulting in wear, which in turn affects its service life. This kind of wear will not only increase the maintenance cost, but also may affect the accuracy and quality of the product. Content of the Utility Model

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a stroke control mechanism for a pressing plate of a mold.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A stroke control mechanism for a pressing plate of a mold includes a bottom plate, an upper mold base, and a stroke control mechanism. The stroke control mechanism includes a U-shaped plate. The U-shaped plate is installed on the bottom surface of the upper mold base through bolts. An installation groove is opened inside the U-shaped plate. A round rod is fixedly connected to the inner wall of the installation groove. A stroke control plate is rotatably connected to the outer surface of the round rod. A steel ball is rotatably connected to the inside of the stroke control plate. A rubber strip and a limiting block are fixedly connected to the inner wall of the installation groove. A rubber pad is installed on the limiting block.

[0007] Furthermore, four supporting feet are fixedly connected to the bottom surface of the bottom plate. An inverted L-shaped plate is fixedly connected to the upper surface of the bottom plate.

[0008] Furthermore, a first hydraulic push rod is installed on the side of the inverted L-shaped plate close to the bottom plate. The bottom end of the first hydraulic push rod is fixedly connected to the upper mold base. A punching rod is fixedly connected to the inside of the upper mold base.

[0009] Further, a support rod is fixedly connected to the upper surface of the bottom plate, and the top end of the support rod is fixedly connected to a lower die base.

[0010] Further, a stamping hole is formed inside the lower die base, and a circular plate is slidably connected to the inner wall of the stamping hole.

[0011] Further, a second hydraulic push rod is installed on the upper surface of the bottom plate, and the top end of the second hydraulic push rod is fixedly connected to the circular plate.

[0012] Compared with the prior art, the press plate stroke control mechanism of this mold has the following beneficial effects:

[0013] Through the stroke control mechanism provided in the present utility model, the hard contact and wear with the lower die base are effectively avoided, thereby greatly extending the service life. At the same time, through the setting of steel balls, the friction during the rotation of the stroke control plate is reduced, further improving the service life and working stability of the mechanism. In addition, the buffering effect of the rubber pad and the anti-friction design of the rubber strip both provide effective protection for protecting the stroke control mechanism from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic perspective front view structure diagram of the present utility model;

[0015] Figure 2 is a connection schematic diagram of the second hydraulic push rod and the circular plate of the present utility model;

[0016] Figure 3 is a connection schematic diagram of the return plate and the upper die base of the present utility model;

[0017] Figure 4 For the present utility model Figure 3 is an enlarged schematic diagram of part A in.

[0018] In the figure: 1. Bottom plate; 2. Support feet; 3. Inverted L-shaped plate; 4. First hydraulic push rod; 5. Upper die base; 6. Stroke control mechanism; 601. Return plate; 602. Round rod; 603. Stroke control plate; 604. Steel ball; 605. Rubber strip; 606. Limit block; 607. Rubber pad; 608. Installation groove; 7. Stamping rod; 8. Support rod; 9. Lower die base; 10. Stamping hole; 11. Second hydraulic push rod; 12. Circular plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The principles and features of the present utility model are described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0020] This embodiment provides a stroke control mechanism for a mold. This control mechanism is mainly used to precisely control and adjust the stroke of the mold during stamping. Through the set stroke control mechanism 6, hard contact and wear with the lower die base 9 are effectively avoided, thus greatly extending the service life. At the same time, through the setting of the steel balls 604, the friction during the rotation of the stroke control plate 603 is reduced, further improving the service life and working stability of the mechanism. In addition, the buffering effect of the rubber pad 607 and the anti-friction design of the rubber strip 605 both provide effective protection for protecting the stroke control mechanism 6 from damage.

[0021] See Figures 1 to 4 , including a bottom plate 1, an upper die base 5, and a stroke control mechanism 6. The stroke control mechanism 6 includes a U-shaped plate 601, and the U-shaped plate 601 is installed on the bottom surface of the upper die base 5 through bolts. An installation groove 608 is opened inside the U-shaped plate 601. A round rod 602 is fixedly connected to the inner wall of the installation groove 608. A stroke control plate 603 is rotatably connected to the outer surface of the round rod 602. Steel balls 604 are rotatably connected inside the stroke control plate 603. A rubber strip 605 and a limiting block 606 are fixedly connected to the inner wall of the installation groove 608, and a rubber pad 607 is installed on the limiting block 606.

[0022] Four support feet 2 are fixedly connected to the bottom surface of the bottom plate 1, and an L-shaped plate 3 is fixedly connected to the upper surface of the bottom plate 1.

[0023] A first hydraulic push rod 4 is installed on one side of the L-shaped plate 3 close to the bottom plate 1. The bottom end of the first hydraulic push rod 4 is fixedly connected to the upper die base 5, and a stamping rod 7 is fixedly connected inside the upper die base 5.

[0024] A support rod 8 is fixedly connected to the upper surface of the bottom plate 1, and the top end of the support rod 8 is fixedly connected to the lower die base 9.

[0025] A stamping hole 10 is opened inside the lower die base 9, and a round plate 12 is slidably connected to the inner wall of the stamping hole 10.

[0026] A second hydraulic push rod 11 is installed on the upper surface of the bottom plate 1, and the top end of the second hydraulic push rod 11 is fixedly connected to the round plate 12.

[0027] Two steel balls 604 are provided, and both are arranged at the bottom inside the stroke control plate 603.

[0028] Two first hydraulic push rods 4 are provided, and both are arranged between the L-shaped plate 3 and the upper die base 5 in a symmetric state. The round rod 602, the stroke control plate 603, the steel balls 604, the rubber strip 605, the limiting block 606, the rubber pad 607, and the installation groove 608 are all provided in two, and are all arranged on the U-shaped plate 601 in a symmetric state. Four support rods 8 are provided, and are all arranged in the directions of the four corners of the bottom surface of the lower die base 9

[0029] Through the provided stroke control mechanism 6, hard contact and wear with the lower die base 9 are effectively avoided, thus greatly extending the service life. At the same time, through the setting of the steel balls 604, the friction during the rotation of the stroke control plate 603 is reduced, further enhancing the service life and working stability of the mechanism. In addition, the buffering effect of the rubber pad 607 and the anti-friction design of the rubber strip 605 both provide effective protection for the stroke control mechanism 6 against damage.

[0030] Working principle: When this device is in use, first, the first hydraulic push rod 4 is started through an external control system. Under the action of the first hydraulic push rod 4, the upper die base 5 starts to move downward, and at the same time drives the control stroke mechanism 6 on its bottom surface to move together. The return plate 601 in the control stroke mechanism 6 moves along with the movement of the upper die base 5. In the installation groove 608 of the return plate 601, the stroke control plate 603 rotatably connected through the round rod 602 starts to play a role. The steel balls 604 rotatably connected inside the stroke control plate 603 are designed to reduce the friction during the rotation of the stroke control plate 603, thereby enhancing the service life and stability of the mechanism. As the upper die base 5 continues to move downward, the stroke control plate 603 will contact the lower die base 9. Since the stroke control plate 603 can rotate around the round rod 602, when it contacts the lower die base 9, it will rotate outward until the two steel balls 604 contact the lower die base 9 and are in a parallel state. At the same time, the stroke control plate 603 will also contact the limit block 606, thereby realizing the limitation of the limit block 606 and ensuring that the stroke control plate 603 and the steel balls 604 are parallel to the lower die base 9. During this process, the rubber pad 607 plays a buffering role to further protect the stroke control plate 603 from damage. As the upper die base 5 continues to move downward, the stamping rod 7 will pass through the stamping hole 10 and contact the round plate 12, thus completing the stamping operation. Subsequently, by starting the second hydraulic push rod 11, the second hydraulic push rod 11 will push the round plate 12 and the stamped part in the stamping hole 10 upward to realize the demolding of the stamped part. When the stamping operation is completed, the first hydraulic push rod 4 will drive the upper die base 5 to move upward, and the control stroke mechanism 6 will also rise accordingly. During the rising process, through the provided rubber strip 605, it can be ensured that the stroke control plate 603 avoids direct friction with the installation groove 608. At the same time, the stroke control plate 603 will automatically reset to its initial position to prepare for the next stamping operation.

[0031] 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 principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mold press plate stroke control mechanism, comprising a base plate (1), an upper mold base (5), and a stroke control mechanism (6), characterized in that: The stroke control mechanism (6) comprises a circular plate (601), the circular plate (601) is mounted on the bottom surface of the upper die seat (5) by means of bolts, a mounting groove (608) is provided inside the circular plate (601), a round rod (602) is fixedly connected to the inner wall of the mounting groove (608), a stroke control plate (603) is rotatably connected to the outer surface of the round rod (602), a steel ball (604) is rotatably connected to the inside of the stroke control plate (603), a rubber strip (605) and a limit block (606) are fixedly connected to the inner wall of the mounting groove (608), and a rubber pad (607) is installed on the limit block (606).

2. A mold platen stroke control mechanism according to claim 1, characterized in that: Four supporting legs (2) are fixedly connected to the bottom surface of the base plate (1), and an inverted L-shaped plate (3) is fixedly connected to the top surface of the base plate (1).

3. A mold platen stroke control mechanism according to claim 2, characterized in that: A first hydraulic push rod (4) is installed on one side of the inverted L-shaped plate (3) close to the bottom plate (1); the bottom end of the first hydraulic push rod (4) is fixedly connected to an upper die seat (5); and a punching rod (7) is fixedly connected inside the upper die seat (5).

4. The mold press plate stroke control mechanism according to claim 1, characterized in that: The upper surface of the base plate (1) is fixedly connected to a support rod (8), and the top end of the support rod (8) is fixedly connected to a lower die seat (9).

5. A mold press plate stroke control mechanism according to claim 4, characterized in that: A punching hole (10) is provided inside the lower die base (9), and a circular plate (12) is slidably connected to the inner wall of the punching hole (10).

6. A mold press plate stroke control mechanism according to claim 1, characterized in that: A second hydraulic push rod (11) is installed on the upper surface of the base plate (1), and the top end of the second hydraulic push rod (11) is fixedly connected to the circular plate (12).

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