Automatic overturning structure of ejection frame of automatic foamed plastic forming machine

Abstract

The utility model relates to the technical field of automatic forming machines, and discloses an automatic overturning structure of an ejection frame of an automatic foamed plastic forming machine, which comprises a base, two sides of the top of the base are fixedly connected with supports, the supports are fixedly connected with stepping motors, the tail ends of rotors of the stepping motors are fixedly connected with air cylinders, and the air cylinders are fixedly connected with the air cylinders. The telescopic tail ends of the air cylinders are fixedly connected with limiting plates, a mold is arranged between the two sets of limiting plates, movable plates are arranged on the two sides of the mold, first connecting rods are symmetrically hinged between the movable plates and the limiting plates through hinge pieces, and a push plate is arranged on one side of each movable plate; four sets of movable rods are symmetrically and fixedly connected to the push plate, the movable rods are slidably connected with the movable plate on the same side, and the movable rods are sleeved with springs. The problem that the distance between the two sets of limiting plates is fixed and is difficult to adjust, so that the device is difficult to adapt to molds with different sizes is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of automatic molding machine technology, and in particular to an automatic flipping structure for the top ejector frame of an automatic foam plastic molding machine. Background Technology

[0002] An automatic forming machine is a device that can automatically complete the forming operation. It is usually used for processing materials such as cardboard boxes and aluminum profiles.

[0003] Chinese utility model patent CN219838185U discloses a thermoforming mold flipping structure. This device uses a one-way threaded rod to fix an upper and lower mold between two limiting plates via a clamping plate. Starting a motor causes a rotating shaft to drive the upper and lower molds to rotate and flip through the limiting plates. Reversing the one-way threaded rod moves the clamping plate away from the upper mold, allowing the upper and lower molds to be removed and replaced with molds for other parts, thus facilitating the replacement of molds for other parts. Regarding the aforementioned related technology, the inventors believe the following drawbacks exist:

[0004] In actual use, the device is difficult to adapt to molds of different sizes because the distance between the two sets of limiting plates is fixed and difficult to adjust. This reduces the practicality of the device and affects the molding and processing of foam plastics. To address this, we provide an automatic flipping structure for the top ejector of an automatic foam plastic molding machine. Utility Model Content

[0005] To address the problem in the aforementioned background technology that the fixed distance between the two sets of limiting plates makes it difficult to adjust and thus the device is difficult to adapt to molds of different sizes, this utility model provides an automatic flipping structure for the top ejector of an automatic foam plastic molding machine.

[0006] This utility model is achieved using the following technical solution: an automatic top-outlet frame flipping structure for an automatic foam plastic molding machine, including a base, with brackets fixedly connected to both sides of the top of the base, a stepper motor fixedly connected to the brackets, a cylinder fixedly connected to the rotor end of the stepper motor, a limit plate fixedly connected to the telescopic end of the cylinder, a mold arranged between the two sets of limit plates, movable plates arranged on both sides of the mold, a connecting rod symmetrically hinged between the movable plate and the limit plate via a hinge, a push plate arranged on one side of the movable plate, four sets of movable rods symmetrically fixedly connected to the push plate and slidably connected to the movable plate on the same side, and a spring sleeved on the outside of the movable rod.

[0007] As a further improvement to the above solution, a bidirectional lead screw is rotatably connected between the two sets of brackets, and threaded blocks are threadedly connected to both sides of the bidirectional lead screw. A receiving plate is provided above the base, and a connecting rod is hinged between the receiving plate and the threaded blocks through a hinge.

[0008] As a further improvement to the above solution, a guide block is fixedly connected to the bottom of the threaded block, and a guide groove is opened on the top of the base corresponding to the position of the guide block, and the guide groove is slidably connected to the guide block on the same side.

[0009] As a further improvement to the above solution, the limiting plate is designed as a horizontally placed U-shaped structure.

[0010] As a further improvement to the above solution, a one-way screw is threadedly connected to the limiting plate, and a pressure plate is rotatably connected to the bottom end of the one-way screw. Guide rods are fixedly connected to both sides of the top of the pressure plate, and the guide rods are slidably connected to the limiting plate.

[0011] As a further improvement to the above solution, an anti-detachment plate is fixedly connected to the end of the movable rod.

[0012] As a further improvement to the above solution, the two ends of the spring are fixedly connected to the movable plate and the push plate, respectively.

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

[0014] 1. This utility model uses two sets of cylinders to simultaneously push two sets of limiting plates to move towards each other, so as to adjust the distance between the two sets of limiting plates according to the size of the mold. At the same time, as the two sets of limiting plates approach each other, the hinge action between the limiting plates, the movable plate and the connecting rod allows the two sets of movable plates to move towards each other. The movement of the movable plates can also drive the push plate to move together, thereby pushing the mold towards the center position to prevent it from tilting. Furthermore, the sliding cooperation between the movable rod and the movable plate, and the elasticity of the spring itself, allows the two sets of limiting plates to continue moving after the push plate has completed the position correction of the foam plastic molding mold, thus achieving a buffering effect and making it highly practical.

[0015] 2. This utility model uses a rotating bidirectional lead screw to drive two sets of threaded blocks to move in opposite directions. By utilizing the hinged action between the threaded blocks and the receiving plate and the connecting rod, the receiving plate can be pushed vertically upward, which facilitates the receiving of the mold when it is released. This not only prevents the foam plastic molding mold from falling directly, but also prevents personnel from being burned, further improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional connection structure of the limiting plate, the movable plate, and the push plate of this utility model;

[0018] Figure 3This is a three-dimensional schematic diagram of the connection structure of the receiving plate of this utility model.

[0019] Explanation of key symbols:

[0020] 1. Base; 2. Stepper motor; 3. Cylinder; 4. Limit plate; 5. Mold; 6. Movable plate; 7. Connecting rod one; 8. Push plate; 9. Movable rod; 10. Spring; 11. Two-way lead screw; 12. Threaded block; 13. Receiving plate; 14. Connecting rod two; 15. Guide block; 16. One-way lead screw; 17. Pressure plate; 18. Guide rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Example 1:

[0023] Please combine Figure 1-3 The automatic tilting structure of the foam plastic automatic molding machine top ejector frame in this embodiment includes a base 1. Supports are fixedly connected to both sides of the top of the base 1. A stepper motor 2 is fixedly connected to each support. A cylinder 3 is fixedly connected to the rotor end of the stepper motor 2. A limit plate 4 is fixedly connected to the telescopic end of the cylinder 3. A mold 5 is arranged between the two limit plates 4. Movable plates 6 are arranged on both sides of the mold 5. A connecting rod 7 is symmetrically hinged between the movable plate 6 and the limit plate 4 via hinges. A push plate 8 is arranged on one side of the movable plate 6. The device is equipped with four sets of movable rods 9, which are slidably connected to the movable plate 6 on the same side. Springs 10 are sleeved on the outside of the movable rods 9. The two ends of the springs 10 are fixedly connected to the movable plate 6 and the push plate 8, respectively. The limiting plate 4 is a U-shaped structure designed for horizontal placement. A one-way screw 16 is threaded on the limiting plate 4. A pressure plate 17 is rotatably connected to the bottom end of the one-way screw 16. Guide rods 18 are fixedly connected to both sides of the top of the pressure plate 17, and the guide rods 18 are slidably connected to the limiting plate 4, which facilitates the improvement of the clamping and fixing effect on the mold 5.

[0024] A bidirectional lead screw 11 is rotatably connected between the two sets of brackets. Threaded blocks 12 are threadedly connected to the outer sides of both sides of the bidirectional lead screw 11. A receiving plate 13 is provided above the base 1. A connecting rod 14 is hinged between the receiving plate 13 and the threaded block 12 through a hinge. A guide block 15 is fixedly connected to the bottom of the threaded block 12. A guide groove is opened on the top of the base 1 at the position corresponding to the guide block 15, and the guide groove is slidably connected to the guide block 15 on the same side, which can play a certain guiding role for the horizontal movement of the threaded block 12.

[0025] The implementation principle of the automatic tilting structure of the foam plastic automatic molding machine in this embodiment is as follows: First, based on the size of the mold 5, two sets of cylinders 3 are used to simultaneously drive two sets of limiting plates 4 to adjust the distance between the two sets of limiting plates 4. Then, the mold 5 is placed between the two sets of limiting plates 4. Subsequently, the cylinders 3 continue to push the limiting plates 4 to clamp the mold 5. At the same time, as the two sets of limiting plates 4 approach each other, the hinge action between the limiting plates 4, the movable plate 6, and the connecting rod 7 enables the two sets of movable plates 6 to move towards each other. The movement of the movable plates 6 can also drive the push plate 8 to move together, thereby enabling... The mold 5 is pushed towards the center to prevent it from tilting. The sliding engagement between the movable rod 9 and the movable plate 6, along with the elasticity of the spring 10, allows the two sets of limiting plates 4 to continue moving even after the push plate 8 has corrected the position of the mold 5, thus providing a buffering effect. Then, the unidirectional lead screw 16 is rotated to move the pressure plate 17 vertically downwards, further clamping and fixing the mold 5. Molten foam plastic is then added to the inside of the mold 5 for molding. Two sets of stepper motors 2 (NEMA 17) drive the two sets of limiting plates 4 to rotate simultaneously at a certain angle, allowing the mold 5 to be flipped. The bidirectional lead screw 11 is rotated to move the two sets of threaded blocks 12 towards each other. The hinge between the threaded blocks 12, the receiving plate 13, and the connecting rod 14 allows the receiving plate 13 to be pushed vertically upwards. Finally, the mold 5 is released. The receiving plate 13 supports the mold 5, preventing it from falling directly and also preventing burns to personnel.

[0026] Example 2:

[0027] Based on Example 1, this embodiment is further improved in that: the end of the movable rod 9 is fixedly connected with an anti-detachment plate, which can prevent the movable rod 9 from detaching from the movable plate 6.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An automatic tilting structure for the top ejector frame of an automatic foam plastic molding machine, characterized in that, The device includes a base (1), on both sides of the top of the base (1) are fixedly connected to brackets, on which stepper motors (2) are fixedly connected, and on the rotor end of the stepper motor (2) are fixedly connected to cylinders (3). On the telescopic end of the cylinders (3) are fixedly connected to limit plates (4). A mold (5) is provided between the two sets of limit plates (4). Movable plates (6) are provided on both sides of the mold (5). A connecting rod (7) is symmetrically hinged between the movable plate (6) and the limit plate (4) through a hinge. A push plate (8) is provided on one side of the movable plate (6). Four sets of movable rods (9) are symmetrically fixedly connected on the push plate (8) and the movable rods (9) are slidably connected to the movable plate (6) on the same side. A spring (10) is sleeved on the outside of the movable rods (9).

2. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 1, characterized in that, A bidirectional lead screw (11) is rotatably connected between the two sets of brackets. Threaded blocks (12) are threadedly connected to both sides of the bidirectional lead screw (11). A support plate (13) is provided above the base (1). A connecting rod (14) is hinged between the support plate (13) and the threaded blocks (12) through a hinge.

3. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 2, characterized in that, The bottom of the threaded block (12) is fixedly connected to a guide block (15), and the top of the base (1) is provided with a guide groove corresponding to the position of the guide block (15), and the guide groove is slidably connected to the guide block (15) on the same side.

4. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 1, characterized in that, The limiting plate (4) is a U-shaped structure designed to be placed horizontally.

5. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 1, characterized in that, The limiting plate (4) is threaded with a one-way screw (16), and the bottom end of the one-way screw (16) is rotatably connected to a pressure plate (17). The top two sides of the pressure plate (17) are fixedly connected with guide rods (18), and the guide rods (18) are slidably connected to the limiting plate (4).

6. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 1, characterized in that, An anti-detachment plate is fixedly connected to the end of the movable rod (9).

7. The automatic tilting structure of the top ejector frame of the automatic foam plastic molding machine as described in claim 1, characterized in that, The two ends of the spring (10) are fixedly connected to the movable plate (6) and the push plate (8), respectively.

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