A front door limiting device for injection molding machine

Abstract

The utility model discloses a front door limiting device for an injection molding machine, which relates to the field of front door limiting of an injection molding machine, and comprises a frame, wherein the inner side of the frame is slidably connected with a front door, and a moving mechanism is installed at the back end of the frame, and the moving mechanism in the running state is used to open or close the front door; a limiting mechanism is installed at the front end of the frame, and the limiting mechanism rotated downward by ninety degrees from a vertical state is used to limit the front door in the open state to prevent the front door from closing accidentally; the limiting mechanism comprises a fixed ring and a rotating column, the plane end of the fixed ring is fixedly connected to the front end of the frame, and the rotating column is rotatably connected to the inner cavity of the fixed ring. The utility model can limit the front door when the front door is opened by arranging a limiting mechanism, a rubber plate, a limiting block and a limiting groove, so as to avoid the sudden closing phenomenon caused by an accident, thereby reducing the safety risk.

Description

Technical Field

[0001] The utility model relates to the field of front door limiting of injection molding machines, in particular to a front door limiting device of an injection molding machine. Background Art

[0002] Large injection molding machines are generally equipped with protective front doors and rear doors. During the injection molding process, the protective front door is in a closed state. After the mold is opened, when the injection molded product needs to be taken out, the protective front door needs to be opened to take out the product.

[0003] The movement of the existing protective front door of the injection molding machine is generally driven by a moving mechanism rather than manually. Therefore, the protective front door may suddenly close due to reasons such as a person accidentally touching the switch or a circuit failure. If the person who takes the product has not evacuated at this time, it will cause personal safety risks. Utility Model Content

[0004] The purpose of the utility model is to provide a front door limiting device for an injection molding machine in order to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a front door limit device for an injection molding machine, comprising a frame, the inner side of the frame is slidably connected with a front door, a moving mechanism is installed at the back end of the frame, and the moving mechanism in a running state is used to open or close the front door;

[0006] A limiting mechanism is installed at the front end of the frame, and the limiting mechanism rotated downward by 90 degrees from a vertical state is used to limit the front door in an open state to prevent the front door from being accidentally closed;

[0007] The limiting mechanism comprises a fixed ring and a rotating column, the plane end of the fixed ring is fixedly connected to the front end of the frame, and the rotating column is rotatably connected to the inner cavity of the fixed ring.

[0008] As a further solution of the utility model: the moving mechanism includes a mounting plate mounted on the back end of the frame, two synchronous wheels are rotatably mounted between one end of the mounting plate and the back end of the frame, the two synchronous wheels are connected by a synchronous belt transmission, and the other end surface of the mounting plate is mounted with a forward and reverse motor coaxially connected to one of the synchronous wheels;

[0009] A fixing block is fixedly installed on the upper part of the synchronous belt, and a connecting bracket connected to the front door is fixedly connected to the top of the fixing block.

[0010] As a further solution of the utility model: a rubber plate is fixedly connected to the outer wall of the rotating column. When the rubber plate is in an initial state, the rubber plate contacts the front end surface of the frame, and the supporting force generated by the contact limits the rotating column to the initial position.

[0011] As a further solution of the utility model: a limiting rod is fixedly installed at one end of the rotating column, and an anti-drop plate is integrally formed at the other end of the rotating column. The diameter of the anti-drop plate is larger than the diameter of the rotating column. When the rotating column is in an initial state, the limiting rod is in a vertical state.

[0012] As a further solution of the utility model: the interior of the fixing ring is provided with limiting grooves distributed at 90 degrees, and the outer wall of the rotating column is integrally formed with a limiting block slidably connected to the limiting groove;

[0013] The limiting groove cooperates with the limiting block to limit the maximum angle of downward rotation of the rotating column and the limiting rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting a limit mechanism, a rubber plate, a limit block and a limit groove, the front door can be limited when it is opened to avoid sudden closing due to accidents, thereby reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of another viewing angle of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the mobile mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0020] Figure 5 It is a connection diagram of the limit block and the limit groove of the utility model.

[0021] In the figure: 1. frame; 2. front door; 3. fixing ring; 4. rotating column; 5. limiting rod; 6. mounting plate; 7. forward and reverse motor; 8. synchronous wheel; 9. synchronous belt; 10. fixing block; 11. connecting bracket; 12. limiting block; 13. anti-slip plate; 14. rubber plate; 15. limiting groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 to Figure 5 In an embodiment of the utility model, a front door limiting device of an injection molding machine includes a frame 1, a front door 2 is slidably connected to the inner side of the frame 1, a moving mechanism is installed at the back end of the frame 1, and the moving mechanism in the running state is used to open or close the front door 2; a limiting mechanism is installed at the front end of the frame 1, and the limiting mechanism rotated downward by ninety degrees from the vertical state is used to limit the front door 2 in the open state to prevent the front door 2 from being accidentally closed; the limiting mechanism includes a fixed ring 3 and a rotating column 4, the plane end of the fixed ring 3 is fixedly connected to the front end of the frame 1, and the rotating column 4 is rotatably connected to the inner cavity of the fixed ring 3.

[0024] In this embodiment: First, after the injection molding machine completes the injection molding, the front door 2 is driven to open by the moving mechanism. At this time, the limiting mechanism is rotated downward by ninety degrees, and the limiting mechanism is rotated from the vertical state to the horizontal state to limit the end of the opened front door 2. Then, the injection molded product is manually removed from the mold. During this process, the limiting mechanism can effectively prevent the front door 2 from suddenly closing due to accidents or circuit failures, thereby avoiding personal injuries caused by accidental closing.

[0025] Please refer to Figure 2 and Figure 3 The moving mechanism includes a mounting plate 6 installed on the back end of the frame 1, two synchronous wheels 8 are rotatably installed between one end of the mounting plate 6 and the back end of the frame 1, the two synchronous wheels 8 are connected by a synchronous belt 9, and a forward and reverse motor 7 coaxially connected to a synchronous wheel 8 is installed on the other end surface of the mounting plate 6; a fixing block 10 is fixedly installed on the upper half of the synchronous belt 9, and a connecting bracket 11 connected to the front door 2 is fixedly connected to the top of the fixing block 10.

[0026] In this embodiment: when the front door 2 is opened or closed, the forward and reverse motor 7 runs and drives the synchronous wheel 8 connected thereto to rotate. The synchronous wheel 8 drives another synchronous wheel 8 to rotate synchronously in the same direction through the synchronous belt 9. During the transmission process, the synchronous belt 9 drives the fixed block 10 to move accordingly. The fixed block 10 pushes the front door 2 to slide through the connecting bracket 11, thereby realizing the opening or closing of the front door 2.

[0027] Please refer to Figure 4 and Figure 5The outer wall of the rotating column 4 is fixedly connected with a rubber plate 14. When the rubber plate 14 is in the initial state, the rubber plate 14 contacts the front end surface of the frame 1, and the supporting force generated by the contact limits the rotating column 4 to the initial position.

[0028] In this embodiment: before the rotating column 4 rotates, it is in the initial state. At this time, the arc surface of one end of the rubber plate 14 contacts the surface of the frame 1. The frame 1 limits the rotating column 4 to the initial position through the rubber plate 14 to avoid the problem of autonomous downward rotation due to the influence of the limit rod 5.

[0029] Please refer to Figure 4 and Figure 5 A limiting rod 5 is fixedly installed at one end of the rotating column 4, and an anti-dropping plate 13 is integrally formed at the other end of the rotating column 4. The diameter of the anti-dropping plate 13 is larger than the diameter of the rotating column 4. When the rotating column 4 is in the initial state, the limiting rod 5 is in a vertical state.

[0030] In this embodiment, the anti-slip plate 13 can prevent the rotating column 4 from being separated from the inner wall of the fixing ring 3 .

[0031] Please refer to Figure 4 and Figure 5 The interior of the fixing ring 3 is provided with a limit groove 15 distributed at 90 degrees, and the outer wall of the rotating column 4 is integrally formed with a limit block 12 slidably connected to the limit groove 15; the limit groove 15 and the limit block 12 cooperate to limit the maximum angle of downward rotation of the rotating column 4 and the limit rod 5.

[0032] In this embodiment: when the rotating column 4 rotates downward, the rotating column 4 drives the rubber plate 14 and the limit block 12 to rotate downward synchronously, and the rotating column 4 drives the limit rod 5 to rotate downward from the vertical state at the same time. The rubber plate 14 is squeezed with the frame 1 during the rotation process, and then deformed until the limit block 12 rotates ninety degrees in the limit groove 15. At this time, the rotating column 4 drives the limit rod 5 to rotate from the vertical state to the horizontal state;

[0033] The limiting rod 5 rotated to the horizontal state contacts the end of the front door 2 in the open state. At this time, the limiting rod 5 can limit the sudden closing of the front door 2 due to an accident, thereby reducing the safety risk.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front door limiter for an injection molding machine, comprising a frame (1), wherein a front door (2) is slidably connected to the inner side of the frame (1), characterized in that: A moving mechanism is installed at the back end of the frame (1), and the moving mechanism in an operating state is used to open or close the front door (2); A limiting mechanism is installed at the front end of the frame (1), and the limiting mechanism rotates downward by 90 degrees from a vertical state and is used to limit the front door (2) in an open state to prevent the front door (2) from closing accidentally; The limiting mechanism comprises a fixed ring (3) and a rotating column (4); the plane end of the fixed ring (3) is fixedly connected to the front end of the frame (1); and the rotating column (4) is rotatably connected to the inner cavity of the fixed ring (3).

2. The front door limiting device of an injection molding machine according to claim 1, characterized in that: The moving mechanism comprises a mounting plate (6) mounted on the back end of the frame (1); two synchronous wheels (8) are rotatably mounted between one end of the mounting plate (6) and the back end of the frame (1); the two synchronous wheels (8) are connected by a synchronous belt (9); and a forward and reverse motor (7) coaxially connected to one of the synchronous wheels (8) is mounted on the other end surface of the mounting plate (6); A fixing block (10) is fixedly mounted on the upper half of the synchronous belt (9), and a connecting bracket (11) connected to the front door (2) is fixedly connected to the top of the fixing block (10).

3. The front door limiting device of an injection molding machine according to claim 1, characterized in that: A rubber plate (14) is fixedly connected to the outer wall of the rotating column (4); when the rubber plate (14) is in an initial state, the rubber plate (14) contacts the front end surface of the frame (1), and the supporting force generated by the contact restricts the rotating column (4) to an initial position.

4. The front door limiting device of an injection molding machine according to claim 3, characterized in that: A limiting rod (5) is fixedly mounted on one end of the rotating column (4), and an anti-slip plate (13) is integrally formed on the other end of the rotating column (4). The diameter of the anti-slip plate (13) is larger than the diameter of the rotating column (4). When the rotating column (4) is in an initial state, the limiting rod (5) is in a vertical state.

5. The front door limiting device of an injection molding machine according to claim 4, characterized in that: The interior of the fixing ring (3) is provided with limiting grooves (15) distributed at a 90-degree angle, and the outer wall of the rotating column (4) is integrally formed with a limiting block (12) slidably connected to the limiting grooves (15); The limiting groove (15) cooperates with the limiting block (12) to limit the maximum angle of downward rotation of the rotating column (4) and the limiting rod (5).

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