Machine door locking device for injection molding machine

Abstract

The utility model relates to the field of injection molding machines, in particular to a machine door locking device for an injection molding machine. The machine door locking device comprises a machine door and a machine frame, an upper guide rail is arranged on the machine frame, the machine door is hung on the upper guide rail, the machine door and the upper guide rail can slide relatively, a limiting collision plate is arranged on the machine door, a screw hole is formed in the upper guide rail, and when the limiting collision plate slides to the screw hole, a screw is inserted into the limiting collision plate from the screw hole to lock the machine door. After the technical scheme is adopted, the machine door is hung on the upper guide rail, the main stress of the machine door is transferred to the upper guide rail, the lower guide rail only plays a guiding role, and the machine door cannot jump due to the limitation of the lower guide rail when working. Meanwhile, a limiting collision plate is arranged on the machine door, a screw hole is formed in the upper guide rail, the limiting collision plate and the screw hole are matched, and when the machine door needs to be locked, a screw is inserted into the limiting collision plate from the screw hole to lock the machine door.

Description

Technical Field

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

[0002] Existing machine door configurations are similar to sliding doors and windows, with upper and lower guide rails and matching pulleys. These doors are prone to slipping due to bouncing during sliding. Furthermore, existing machine doors cannot be secured during transport. When subjected to force majeure during transport, the door can easily slip, potentially damaging the machine or injuring workers. Utility Model Content

[0003] The purpose of the utility model is to provide a door locking device for an injection molding machine, which saves parts, is easy to install and maintain, and is hidden inside the machine door without affecting the appearance of the entire machine.

[0004] The above purpose is achieved in this way.

[0005] A machine door locking device for an injection molding machine comprises a machine door and a machine frame, wherein the machine door is hung on an upper guide rail and slides on the upper guide rail. A limit striker is provided on the machine door and a screw hole is provided on the upper guide rail. When the limit striker slides to the screw hole, a screw is inserted into the limit striker through the screw hole to lock the machine door.

[0006] The purpose of the utility model can also be optimized by adopting the following technical measures.

[0007] Preferably, a door limiting block is provided on the upper guide rail. When the door slides a certain distance in the door-opening direction, the door limiting block presses against the limiting striker plate, and the door is limited and cannot continue to slide in the door-opening direction.

[0008] Preferably, the limiting striker plate is provided with an elongated hole. When the limiting striker plate slides to the screw hole, the screw is inserted from the screw hole into the elongated hole of the limiting striker plate to lock the door.

[0009] Preferably, the frame is provided with a lower guide rail, the machine door is provided with an L-shaped guide arm, the end of the guide arm is provided with a guide column, the guide column is arranged in the lower guide rail, and the guide column and the lower guide rail slide relative to each other.

[0010] Preferably, the frame is provided with a surrounding wall, which together with the machine door forms a closed box.

[0011] By adopting the above technical solution, the utility model transfers the main force of the door to the upper guide rail by hanging the door on the upper guide rail. The lower guide rail only serves as a guide. The door cannot jump during operation due to the position limit of the lower guide rail. At the same time, a limit striker is provided on the door and a screw hole is provided on the upper guide rail. When the door needs to be locked, the screw is inserted into the limit striker through the screw hole to lock the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a simplified diagram of the machine door and frame.

[0013] Figure 2 This is another simplified diagram of the machine door and frame.

[0014] Figure 3 This is a schematic diagram of the machine door and rack.

[0015] Figure 4 Schematic diagram of the limit collision plate.

[0016] In the figure: machine door 1; frame 2; upper guide rail 3; machine door stopper 4; stopper striker 5; first bending surface 51; second bending surface 52; long strip hole 53; pulley 6; support rod 7; lower guide rail 8; screw hole 9; guide arm 11; guide column 12; surrounding wall 13; DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Combine Figure 1 , a machine door locking device for an injection molding machine, comprising a machine door 1 and a frame 2.

[0019] Combine Figure 2 The frame 2 is provided with an upper guide rail 3, on which the door 1 is mounted. The frame 1 is provided with a surrounding wall 13, which together with the door 1 form a closed box. The door 1 slides on the guide rail 3. The upper guide rail 3 is provided with a door stopper 4, the position of which is set according to relevant requirements. The door 1 is provided with a limit plate 5.

[0020] Combine Figure 4 In this embodiment, the limit striker 5 is a metal sheet that has been bent twice. The first bent surface 51 formed by the first bend allows the metal sheet to penetrate from the machine door 1 to the lower part of the upper guide rail 3. The metal sheet is bent for the second time to form a second bent surface 52 perpendicular to the moving direction of the machine door 1. When the machine door 1 slides a certain distance in the door opening direction, the certain distance is the distance between the limit striker 5 and the machine door limit block 4. The machine door limit block 4 presses against the second bent surface 52 of the limit striker 5, and the machine door 1 is limited and cannot continue to slide in the door opening direction.

[0021] Combine Figure 4 A long strip hole 53 is provided on the first bent surface 51 of the limiting striker 5, and a screw hole 9 is provided on the upper guide rail 3. The diameter of the screw hole 9 matches the width of the long strip hole. When the limiting striker 5 slides to the screw hole 9, the screw is inserted from the screw hole 9 into the long strip hole of the limiting striker 5 to lock the machine door 1.

[0022] Combine Figure 3 The frame 2 is provided with a lower guide rail 8. In this embodiment, the lower guide rail 8 is welded to the frame 2 and does not need to be installed separately. The machine door 1 is provided with an L-shaped guide arm 11. The end of the guide arm 11 is provided with a guide column 12. The guide column 12 is arranged in the lower guide rail 8. The guide column 12 and the lower guide rail 8 slide relative to each other. The lower guide rail 8 only serves to guide the guide column 12. The guide column does not bear the pressure of the machine door 1 in the lower guide rail 8.

Claims

1. A door locking device for an injection molding machine, comprising a door and a frame, wherein the frame is provided with an upper guide rail, characterized in that: The machine door is hung on the upper guide rail and slides on the upper guide rail. A limit striker is provided on the machine door and a screw hole is provided on the upper guide rail. When the limit striker slides to the screw hole, a screw is inserted into the limit striker from the screw hole to lock the machine door.

2. The door locking device for an injection molding machine according to claim 1, characterized in that: The upper guide rail is provided with a door limiting block. When the door slides a certain distance in the door-opening direction, the door limiting block presses against the limiting striker plate, and the door is limited and cannot continue to slide in the door-opening direction.

3. The door locking device for an injection molding machine according to claim 1, characterized in that: The limiting striker is provided with an elongated hole. When the limiting striker slides to the screw hole, the screw is inserted from the screw hole into the elongated hole of the limiting striker to lock the door.

4. The door locking device for an injection molding machine according to claim 1, characterized in that: The frame is provided with a lower guide rail, the machine door is provided with an L-shaped guide arm, the end of the guide arm is provided with a guide column, the guide column is arranged in the lower guide rail, and the guide column and the lower guide rail slide relatively.

5. The door locking device for an injection molding machine according to claim 1, characterized in that: The frame is provided with a surrounding wall, which together with the machine door forms a closed box body.

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