Automatic mold ejection device

Abstract

The utility model discloses a mould automatic ejection device, including the support shell, the top of support shell is equipped with the mould body, the top of mould body is equipped with the mould cavity. The utility model only through a servo motor drive positive rotation screw rod and reverse screw rod synchronous operation, drive both sides screw block opposite or reverse movement, need not to set up additional multiple drive source, positive rotation and reverse screw rod integration design, ensure that both sides inclined plate movement is completely synchronous, and then drive inclined block and concave block stable lifting, solved the traditional multiple drive source ejection out of step and led to the uneven stress problem of product, and the mobile ejection assembly adopts several even distribution's jack rod synchronous ejection, and the ejection force is dispersed in the multiple key stress points of product, replaces the concentrated stress mode of traditional single ejection plate or a small amount of ejector pin, effectively avoids the thin wall and complex shape product to appear the top mark, the deformation or the breakage, and the product qualified rate improves.

Description

Technical Field

[0001] This utility model relates to the field of mold ejection technology, specifically to an automatic mold ejection device. Background Technology

[0002] In mold processing and production, the ejection device is a core component of the mold. Its function is to smoothly eject the molded product from the mold cavity or core, ensuring continuous production.

[0003] According to application number CN201820086271.7, an automatic mold ejection device is disclosed, including a mold, a push plate and a base. The mold is provided above the base, and a push plate for demolding is slidably connected inside the mold. The mold is fixedly connected to an external connecting part.

[0004] The ejection devices in the above cases have poor ejection performance. They use a simple ejection plate structure, which concentrates the ejection force and easily leads to ejection marks, deformation, or even breakage of the product. They are especially unsuitable for thin-walled or complex-shaped products. Moreover, they require two motors to drive the ejection, which increases energy consumption. Therefore, we provide an automatic ejection device for molds. Utility Model Content

[0005] The purpose of this invention is to provide an automatic mold ejection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic ejection device for a mold, comprising a support shell, a mold body mounted on the top of the support shell, a mold cavity opened on the top of the mold body, a movable ejection component disposed inside the support shell, the movable ejection component being used to eject the product from the mold body, and a driving component disposed on the support shell, the driving component being used to drive the movable ejection component to move up and down.

[0007] Optionally, the movable ejector assembly includes a recessed block disposed inside the support shell, and a plurality of ejector rods are mounted on the top of the recessed block. The top ends of the ejector rods pass through the support shell and the mold cavity from bottom to top and extend into the interior of the mold cavity.

[0008] Optionally, the movable ejection assembly further includes two guide rods, each mounted on the top of the inner wall of the support housing. The bottom end of each guide rod penetrates the recess and extends to its exterior. The bottom ends of the two guide rods, located at the bottom of the recess, are fixedly connected by a support plate.

[0009] Optionally, the top of the support plate is in contact with the midpoint of the bottom of the concave block, and a buffer spring is sleeved on the surface of the guide rod between the support shell and the concave block.

[0010] Optionally, the drive assembly includes a servo motor, which is mounted on the bottom of the left side of the support housing. The right end of the output shaft of the servo motor passes through the support housing and extends into it, where a forward-rotating threaded rod is installed. A reverse-rotating threaded rod is installed at the right end of the forward-rotating threaded rod.

[0011] Optionally, both the surface of the forward-rotating threaded rod and the surface of the reverse-rotating threaded rod are threadedly connected to threaded blocks. An inclined plate is installed on the top of the threaded block, and an inclined block adapted to it is provided on the inclined plate. Two rollers are rotatably connected in the groove on the side of the inclined block near the inclined plate, and the side of the inclined block near the concave block is fixedly connected to the concave block.

[0012] Optionally, a positioning rod is installed on the left side of the inner wall of the support shell, and the right end of the positioning rod passes through two threaded blocks and extends to the outside of them to be fixedly connected to the right side of the inner wall of the support shell. An inspection plate is provided at the opening on the front of the support shell, and a fastening bolt that is threadedly connected to the support shell is provided on the front of the inspection plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses only one servo motor to drive the forward and reverse threaded rods to operate synchronously, causing the threaded blocks on both sides to move in opposite directions. It eliminates the need for multiple additional drive sources. The integrated design of the forward and reverse threaded rods ensures that the movement of the inclined plates on both sides is completely synchronized, thereby driving the inclined blocks and concave blocks to rise and fall smoothly. This solves the problem of uneven force on the product caused by the asynchronous ejection of traditional multi-drive sources. The moving ejection component uses several evenly distributed ejector rods to eject synchronously, distributing the ejection force to multiple key force points on the product. This replaces the concentrated force mode of the traditional single ejector plate or a few ejector pins, effectively avoiding ejection marks, deformation or breakage on thin-walled and complex-shaped products, and improving the product qualification rate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the concave block and the push rod of this utility model;

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the inclined block and roller of this utility model from a bottom view.

[0019] In the diagram: 1. Support shell; 100. Mold body; 2. Moving ejector assembly; 21. Concave block; 22. Ejector rod; 23. Guide rod; 24. Support plate; 25. Buffer spring; 3. Drive assembly; 31. Servo motor; 32. Forward threaded rod; 33. Reverse threaded rod; 34. Threaded block; 35. Inclined plate; 36. Inclined block; 37. Roller; 4. Positioning rod; 5. Inspection plate; 6. Fastening bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 An automatic mold ejection device includes a support shell 1. A maintenance plate 5 is provided at the opening on the front of the support shell 1. The back of the maintenance plate 5 is in contact with the front of the support shell 1. A fastening bolt 6, which is threaded to the support shell 1, is provided on the front of the maintenance plate 5. A mold body 100 is installed on the top of the support shell 1. A mold cavity is opened on the top of the mold body 100. The maintenance plate 5 on the front of the support shell 1 is detachably connected by the fastening bolt 6. When inspecting the drive component 3 or moving the ejection component 2, it is not necessary to disassemble the entire device. Only the fastening bolt 6 needs to be loosened to open the maintenance plate 5, making the operation convenient and efficient.

[0022] The support shell 1 is internally equipped with a movable ejection assembly 2. The movable ejection assembly 2 includes a recess 21, which is disposed inside the support shell 1. Several ejector rods 22 are mounted on the top of the recess 21. The top ends of the ejector rods 22 pass through the support shell 1 and the mold cavity from bottom to top and extend into the interior of the mold cavity. The movable ejection assembly 2 also includes two guide rods 23, which are respectively installed on the top of the inner wall of the support shell 1. The guide rods 23 pass through the recess 21 to provide precise guidance for the up and down movement of the recess 21, avoiding deviation and jamming during ejection. The bottom ends of the guide rods 23 pass through the recess 21. The bottom ends of the two guide rods 23, which pass through the concave block 21 and extend to its outside, are fixedly connected to the bottom of the concave block 21 by a support plate 24. The top of the support plate 24 is in contact with the midpoint of the bottom of the concave block 21. By setting the support plate 24, the concave block 21 is supported. A buffer spring 25 is sleeved on the surface of the guide rod 23 between the support shell 1 and the concave block 21. The buffer spring 25 provides a rebound force when the top rod 22 is reset, so that the buffer spring 25 can drive the top rod 22 to move downward quickly to return to its original position, so that the roller 37 on the inclined block 36 always remains in contact with the inclined plate 35.

[0023] A drive assembly 3 is provided on the support shell 1. The drive assembly 3 includes a servo motor 31, which is installed at the bottom left side of the support shell 1. The servo motor 31 is a forward and reverse reversible motor with a self-locking function. The right end of the output shaft of the servo motor 31 passes through the support shell 1 and extends into it, where a forward-rotating threaded rod 32 is installed. A reverse-rotating threaded rod 33 is installed at the right end of the forward-rotating threaded rod 32. Threaded blocks 34 are threadedly connected to the surfaces of both the forward-rotating threaded rod 32 and the reverse-rotating threaded rod 33. The surface of the threaded blocks 34 slides in contact with the inner wall of the support shell 1, providing a guiding effect so that the force of the rotational movement of the threaded rod can be converted into a force that drives the threaded blocks 34 to move left and right. An inclined plate 35 is installed on the top of the threaded block 34. The side of the inclined plate 35 closest to the inner wall of the support shell 1 slides in contact with the inner wall of the support shell 1. An inclined block 36 adapted to the inclined plate 35 is provided on the inclined plate 35. The inclined block 36 rotates within the groove on the side of the inclined plate 35. Two rollers 37 are connected. The end of the roller 37 near the inclined plate 35 rolls in contact with the inclined plate 35. By setting the rollers 37, the friction generated when the inclined block 36 contacts the inclined plate 35 is reduced, and the smoothness of movement is improved. The side of the inclined block 36 near the concave block 21 is fixedly connected to the concave block 21. A positioning rod 4 is installed on the left side of the inner wall of the support shell 1. The right end of the positioning rod 4 passes through the two threaded blocks 34 and extends to the outside of them, and is fixedly connected to the right side of the inner wall of the support shell 1. By setting the positioning rod 4, the stability of the threaded blocks 34 when moving left and right is improved, avoiding the phenomenon of deviation, and playing a guiding role. All components are integrated inside the support shell 1. The drive component 3 and the moving ejection component 2 are compactly laid out, without occupying additional installation space, which is suitable for the narrow layout environment of the mold production site. The integrated structural design reduces the number of parts, reduces assembly errors, and improves the overall structural stability and operational reliability of the device.

[0024] When in use, after the product is formed in the mold body 100, the ejection program is started. The servo motor 31 rotates forward, and its output shaft drives the forward-rotating threaded rod 32 and the reverse-rotating threaded rod 33 to rotate synchronously. Since the threads of the two threaded rods rotate in opposite directions, the threaded blocks 34 on both sides move towards each other along the positioning rod 4, thereby driving the top inclined plate 35 to move closer synchronously. The inclined plate 35 rolls with the roller 37 of the inclined block 36 through the inclined surface, converting the horizontal driving force into a vertical upward pushing force, pushing the inclined block 36 and the concave block 21 to slide upward along the guide rod 23. The buffer spring 25 is compressed and stores energy, and several ejector rods 22 on the top of the concave block 21 rise synchronously, applying force evenly from the bottom of the mold cavity to smoothly eject the formed product, avoiding excessive local force that could cause product deformation or ejection marks.

[0025] After the product is ejected, the control servo motor 31 reverses, and the forward-rotating threaded rod 32 and the reverse-rotating threaded rod 33 drive the threaded block 34 away in the opposite direction. The inclined plate 35 and the inclined block 36 disengage from the pushing state. At this time, the buffer spring 25 releases its stored energy and generates a downward elastic force, which drives the concave block 21 to quickly reset along the guide rod 23. The push rod 22 retracts to the initial position in sync, and the roller 37 re-adheres to the inclined plate 35, preparing for the next ejection.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic ejection device for a mold, characterized in that: The device includes a support shell (1), on the top of which a mold body (100) is mounted. The top of the mold body (100) has a mold cavity. Inside the support shell (1), a movable ejection assembly (2) is provided. The movable ejection assembly (2) is used to eject the product inside the mold body (100). A drive assembly (3) is provided on the support shell (1). The drive assembly (3) is used to drive the movable ejection assembly (2) to move up and down.

2. The automatic mold ejection device according to claim 1, characterized in that: The movable ejection assembly (2) includes a recess (21) which is disposed inside the support shell (1). Several ejector rods (22) are installed on the top of the recess (21). The top of the ejector rods (22) passes through the support shell (1) and the mold cavity from bottom to top and extends into the interior of the mold cavity.

3. The automatic mold ejection device according to claim 2, characterized in that: The movable ejection assembly (2) also includes guide rods (23), there are two guide rods (23) and they are respectively installed on the top of the inner wall of the support shell (1). The bottom end of the guide rod (23) passes through the recess (21) and extends to its outside. The bottom ends of the two guide rods (23) and are located at the bottom of the recess (21) are fixedly connected by a support plate (24).

4. The automatic mold ejection device according to claim 3, characterized in that: The top of the support plate (24) is in contact with the midpoint of the bottom of the concave block (21), and a buffer spring (25) is sleeved on the surface of the guide rod (23) between the support shell (1) and the concave block (21).

5. The automatic mold ejection device according to claim 2, characterized in that: The drive assembly (3) includes a servo motor (31), which is installed at the bottom of the left side of the support housing (1). The right end of the output shaft of the servo motor (31) passes through the support housing (1) and extends into it to install a forward-rotating threaded rod (32). The right end of the forward-rotating threaded rod (32) is installed with a reverse-rotating threaded rod (33).

6. The automatic mold ejection device according to claim 5, characterized in that: Both the surface of the forward-rotating threaded rod (32) and the surface of the reverse-rotating threaded rod (33) are threadedly connected to threaded blocks (34). A slant plate (35) is installed on the top of the threaded block (34). A slant block (36) is provided on the slant plate (35) and is adapted to it. Two rollers (37) are rotatably connected in the groove of the slant block (36) near the slant plate (35). The side of the slant block (36) near the concave block (21) is fixedly connected to the concave block (21).

7. The automatic mold ejection device according to claim 6, characterized in that: A positioning rod (4) is installed on the left side of the inner wall of the support shell (1). The right end of the positioning rod (4) passes through two threaded blocks (34) and extends to the outside of the support shell (1) and is fixedly connected to the right side of the inner wall of the support shell (1). A maintenance plate (5) is provided at the opening on the front of the support shell (1). A fastening bolt (6) is provided on the front of the maintenance plate (5) and is threadedly connected to the support shell (1).

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