Unshielded safety door for opening injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses an injection molding machine opening unshielded safety door which comprises a fixed door and a sliding door, the fixed door is fixed at the edge of a rack, the upper end of the sliding door slides on a fixed door body in a guiding mode, a feeding and discharging area is exposed when the sliding door is opened, and the upper portion of the area is unshielded; the safety cover plate is fixed to the edge of the rack and horizontally extends outwards, the lower end of the fixed door penetrates through the lower end of the safety cover plate and then is fixedly connected with the rack, and a linear rail extending to the position below the fixed door from the feeding and discharging area is fixed to the lower end face of the safety cover plate; according to the safety door, the effect that the upper portion and the lower portion of a feeding and discharging area are not shielded after the safety door is opened can be achieved, and mold disassembly and personnel access maintenance are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an unobstructed safety door for opening an injection molding machine. Background Technology

[0002] Existing injection molding machine safety doors open and close using a guide rail and rollers. Rollers are typically installed at the top and bottom of the sliding door, while two guide rails are installed vertically and horizontally between the mold interior and exterior areas. Some customers have low-ceilinged factory buildings; even after the lifting device reaches the top of the building, the bottom of the mold is still below the upper guide rail, preventing the mold from entering the mold interior area, causing significant inconvenience for some customers.

[0003] Based on the above problems, Chinese Patent No. CN222271190U discloses a multi-directional mold changing safety door for an injection molding machine, including a sliding door installed on the frame, a baffle on the frame, and a horizontal sliding rail that runs through the loading and unloading space at the lower end of the frame. The lower end of the sliding door is provided with sliding wheels that engage with the sliding rail, and the sliding door slides to open and close the loading and unloading space. A sliding plate slides on the upper end of the baffle via a set of rollers, and the upper end of the sliding door slides on the sliding plate via another set of rollers. When the sliding door is closed, the sliding plate overlaps with the baffle, and the remaining part overlaps with the sliding door. When the sliding door is open, the loading and unloading space is unobstructed.

[0004] In the aforementioned safety door, there is still a lower guide rail suspended above the frame. This lower guide rail covers the lower space of the entire loading and unloading area, which not only affects the aesthetics but also easily causes operators to trip and fall when entering or exiting. Utility Model Content

[0005] This utility model addresses the problem that existing safety doors only have an unobstructed top, while the bottom is still suspended with a guide rail, resulting in poor aesthetics and safety hazards. It provides an unobstructed safety door for injection molding machines that has no obstruction at either the top or bottom.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0007] An unobstructed safety door for an injection molding machine includes a fixed door and a sliding door. The fixed door is fixed to the edge of the machine frame, and the upper end of the sliding door slides along the fixed door body. When the sliding door is open, the loading and unloading area is exposed and there is no obstruction above the area. When the sliding door is closed, it blocks the loading and unloading area. The machine also includes a safety cover plate, which is fixed to the edge of the machine frame and extends horizontally outward. The lower end of the fixed door passes through the lower end of the safety cover plate and is fixedly connected to the machine frame. A linear rail extending from the loading and unloading area to the bottom of the fixed door is fixed to the lower end of the safety cover plate. A slider is embedded in the linear rail and is fixedly connected to the bottom of the sliding door.

[0008] The above solution retains the unobstructed design of the loading and unloading area when the sliding door is open. At the same time, the structure of the guide mechanism below the sliding door is improved. A safety cover plate is horizontally extended and fixed at the edge of the frame. This safety cover plate has a reserved safety distance from the machine body. Meanwhile, the lower guide of the sliding door slides under the safety cover plate, and the linear guide is hidden under the safety cover plate. The safety cover plate has no structure in the direction of the loading and unloading area. When the sliding door is open, there is no obstruction above or below the entire loading and unloading area, which not only facilitates the loading and unloading of molds, but also facilitates maintenance by operators, thus improving safety performance.

[0009] Preferably, a fixing plate is fixedly provided at intervals on the lower end face of the safety cover along the moving direction of the sliding door, and a guide plate is fixed on the frame, which is parallel to the mold closing direction and is used as a connection reference. The end of the fixing plate near the frame is fixedly connected to the guide plate, and the end of the fixing plate away from the frame is fixedly connected to the linear guide.

[0010] Using the above scheme, the guide plate is used to finally position the installation location of the linear guide, ensuring that the linear guide is parallel to the mold closing direction.

[0011] Preferably, the lower end of the sliding door is fixed with an L-shaped first hanging foot, and the horizontal section of the first hanging foot is fixedly connected to the bottom of the slider.

[0012] Using the above solution, the first hanging foot is set in an L-shape, with its vertical part fixed to the sliding door and its horizontal part fixed to the slider. This connection method is more robust and reliable.

[0013] Preferably, a guide rail with an upward-facing guide groove is fixed to the inside of the fixed door via a second hanging foot. There is a gap between the guide rail and the fixed door that allows the sliding door to pass through. The end of the sliding door away from the loading and unloading area is equipped with a roller that can guide the rolling within the guide groove.

[0014] Compared to the three-section folding and two sets of rollers used in the comparative patent, the above solution is significantly simplified in structure, while still achieving the same effect of unobstructed loading and unloading area when the sliding door is open, thus reducing the difficulty and cost of installation.

[0015] Preferably, the second hanging foot is fixedly connected to the guide plate by an L-shaped reinforcing support frame for strengthening the connection between the fixed door and the frame.

[0016] By adopting the above solution, strengthening the support frame can improve the stability of fixed door installation and the stability of sliding door movement.

[0017] This utility model, by adopting the above technical solutions, has significant technical effects: Rollers are installed at the upper end of the sliding door, and guide rails are installed at the upper end of the fixed door. After the rollers and guide rails are guided, the upper part of the loading and unloading area is unobstructed when the sliding door opens, facilitating mold loading and unloading; a safety cover plate extends outward from the edge of the frame, and a linear rail is connected to the lower end of the safety cover plate. A guide slider is embedded in the linear rail at the lower end of the sliding door. This design ensures that the lower part of the loading and unloading area is unobstructed when the sliding door is opened, reducing the probability of operators tripping. This safety door achieves the effect of unobstructed loading and unloading areas both above and below after opening, facilitating mold disassembly and personnel access for maintenance. Attached Figure Description

[0018] Figure 1 This is an isometric view of an injection molding machine when the unobstructed safety door is opened and the safety cover is removed, according to this embodiment.

[0019] Figure 2 yes Figure 1 A magnified view of A;

[0020] Figure 3 yes Figure 1 A magnified view of B;

[0021] Figure 4 yes Figure 1 A magnified view of C;

[0022] Figure 5 yes Figure 1 A magnified view of D;

[0023] Figure 6 This is an isometric view of an injection molding machine when the unobstructed safety door is opened and the safety cover is installed, according to this embodiment.

[0024] Figure 7 yes Figure 6 A magnified view of E.

[0025] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Fixed door; 2. Sliding door; 3. Rear protective door; 4. Head protective cover; 5. Frame; 6. Guide plate; 7. Fixed plate; 8. Reinforcing support frame; 9. Detection switch; 10. Guide rail; 11. Roller; 12. Insert block; 13. Damping wheel; 14. Linear rail; 15. Slider; 16. First hanging foot; 17. Second hanging foot; 18. Safety cover plate. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] An injection molding machine has an unobstructed safety door, including a fixed door 1, a sliding door 2, a head guard 4, and a tail guard 3. The fixed door 1, the head guard 4, and the tail guard 3 are all fixedly connected to the frame 5. The area between the fixed door 1 and the head guard 4 is the loading and unloading area. The sliding door 2 is guided and slids on the frame 5 and the fixed door 1 and opens and closes the loading and unloading area by sliding.

[0028] The upper end of the sliding door 2 is guided to slide on the fixed door 1. Specifically, a second hanging foot 17 is fixed on the upper inner side of the fixed door 1. There are two second hanging feet 17 located at both ends of the fixed door 1. The second hanging feet 17 are inverted U-shaped. A guide rail 10 with an upward-facing guide groove is fixed on the inner wall of the end of the two second hanging feet 17 away from the fixed door 1. There is a gap between the guide rail 10 and the fixed door 1 for the sliding door 2 to slide. A set of rollers 11 that roll and guide the sliding within the guide groove of the guide rail 10 is fixed on the end of the sliding door 2 close to the fixed door 1.

[0029] The lower end of the sliding door 2 is guided to slide on the lower end face of the safety cover plate 18 connected to the frame 5. A guide plate 6 is fixed on the frame 5 along the mold closing direction as a connection reference. Several fixing plates 7 are fixed at intervals on one side of the frame 5 along the extension direction of the guide plate 6. The end of the fixing plate 7 near the frame 5 is fixed to the side wall of the guide plate 6 by screws. The lower end face of the fixing plate 7 is fixed to the linear rail 14 at the end away from the guide plate 6. The safety cover plate 18 covers the upper end face of all the fixing plates 7 and the two are fixed by screws. The linear rail 14 covers the lower end face of all the fixing plates 7 and the two are fixed by screws. A slider 15 is embedded in the linear rail 14 and slides. L-shaped first hanging feet 16 are fixed on both sides of the lower end of the sliding door 2. The vertical section of the first hanging foot 16 is fixed to the sliding door 2 by screws. The horizontal section of the first hanging foot 16 is fixed to the bottom of the slider 15 by screws.

[0030] An L-shaped reinforcing support frame 8 is fixedly connected between the fixed door 1 and the guide plate 6. The vertical section of the reinforcing support frame 8 extends to the outer wall of the end of the second hanging foot 17 away from the fixed door 1 and the two are fixedly connected by screws. The horizontal section of the reinforcing support frame 8 is fixedly connected to the safety cover plate 18 and the guide plate 6 by screws. After the screws pass through the safety cover plate 18, they are fixedly connected to the upper end of the guide plate 6.

[0031] Two sets of detection switches 9 are installed on the reinforcing support frame 8 to detect the open and closed states of the sliding door 2, respectively. The detection switches 9 are existing limit switches. The two sets of detection switches 9 are connected to the controller of the injection molding machine. When the sliding door 2 is detected to be open, the controller controls the injection molding machine to stop running; when the sliding door 2 is detected to be closed, the controller controls the injection molding machine to start.

[0032] A limiting assembly is provided between the sliding door 2 and the head shield 4. The limiting assembly includes a plug 12 and a damping wheel 13. One end of the plug 12 is fixed to the upper part of the sliding door 2 near the head shield 4. Two damping wheels 13 are provided and are rotatably disposed at the upper end of the head shield 4. When the sliding door 2 is closed, the plug 12 is inserted between the two damping wheels 13 to form an elastic clamp.

[0033] In this design, a roller 11 is installed at the upper end of the sliding door 2, and a guide rail 10 is installed at the upper end of the fixed door 1. After the roller 11 and the guide rail 10 are guided, the upper part of the loading and unloading area is unobstructed as the sliding door 2 is opened, which facilitates the loading and unloading of molds. A safety cover plate 18 is fixedly extended outward from the edge of the frame 5. The lower end of the safety cover plate 18 is connected to the linear rail 14. The lower end of the sliding door 2 is connected to the linear rail 14 and a guide slider 15 is embedded in it. This design ensures that the lower part of the loading and unloading area is unobstructed when the sliding door 2 is opened, reducing the probability of operators tripping when entering and exiting. This safety door can achieve the effect of unobstructed loading and unloading areas both above and below after opening.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A safety door for an injection molding machine that allows for unobstructed opening, comprising a fixed door (1) and a sliding door (2), wherein the fixed door (1) is fixed to the edge of the frame (5), and the upper end of the sliding door (2) is guided to slide on the body of the fixed door (1); when the sliding door (2) is open, the loading and unloading area is exposed and there is no obstruction above the area; when the sliding door (2) is closed, it blocks the loading and unloading area, characterized in that: It also includes a safety cover plate (18), which is fixed to the edge of the frame (5) and extends horizontally outward. The lower end of the fixed door (1) passes through the lower end of the safety cover plate (18) and is fixedly connected to the frame (5). The lower end of the safety cover plate (18) is fixed with a linear rail (14) extending from the loading and unloading area to the bottom of the fixed door (1). A guide slider (15) is embedded in the linear rail (14) and the bottom of the sliding door (2) is fixedly connected to the slider (15).

2. The unobstructed safety door for opening an injection molding machine according to claim 1, characterized in that: A fixing plate (7) is fixedly provided at intervals along the moving direction of the sliding door (2) on the lower end face of the safety cover (18). A guide plate (6) parallel to the mold closing direction and used as a connection reference is fixed on the frame. The end of the fixing plate (7) close to the frame (5) is fixedly connected to the guide plate (6), and the end of the fixing plate (7) away from the frame (5) is fixedly connected to the linear guide (14).

3. The unobstructed safety door for opening an injection molding machine according to claim 2, characterized in that: The lower end of the sliding door (2) is fixed with an L-shaped first hanging foot (16), and the horizontal section of the first hanging foot (16) is fixedly connected to the bottom of the slider (15).

4. The unobstructed safety door for opening an injection molding machine according to claim 1, characterized in that: A guide rail (10) with an upward-facing guide groove opening is fixed on the inside of the fixed door (1) via a second hanging foot (17). There is a gap between the guide rail (10) and the fixed door (1) that allows the sliding door (2) to pass through. The end of the sliding door (2) away from the loading and unloading area is equipped with a roller (11) that can guide the rolling within the guide groove.

5. The unobstructed safety door for opening an injection molding machine according to claim 4, characterized in that: The second hanging foot (17) is fixedly connected to the guide plate (6) by an L-shaped reinforcing support frame (8) for strengthening the connection between the fixed door (1) and the frame.

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