Injection molding machine safety door capable of changing molds in multiple directions

Abstract

The utility model provides an injection molding machine safety door capable of changing molds in multiple directions, which comprises a safety door body mounted on a rack of an injection molding machine, a baffle is arranged on the rack, and a distance is reserved between the baffle and one end of the rack, so that a feeding and discharging space with an unshielded upper end is formed between the end part of the rack and the baffle; a lower sliding rail horizontally penetrating through the feeding and discharging space is arranged at the lower end of the rack, a lower pulley clamped with the sliding rail is arranged at the lower end of the safety door body, and the feeding and discharging space is opened or closed through sliding of the safety door body; when the safety door body is opened, the upper end of the feeding and discharging space is not shielded, so that the feeding and discharging space is not limited by the height, mold replacement can be achieved from the two sides of the injection molding machine, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a safety door of an injection molding machine capable of changing molds in multiple directions. Background Art

[0002] The injection molding machine will generate high temperatures during production, and the process is also dangerous. Therefore, in order to improve the safety of the injection molding process, safety doors will be installed at the mold changing and product removal stations of the injection molding machine.

[0003] The traditional safety door of the injection molding machine includes a door frame, and guide rails are arranged at the upper and lower ends of the door frame. The upper and lower ends of the door plate are provided with pulleys that are clamped on the guide rails, and the safety door is opened and closed by sliding the door plate.

[0004] Because the door frame limits the workers' operating space, and the mold is relatively large and difficult to pass through the door frame, the mold can only be disassembled and assembled by lifting from above the injection molding machine, which is a cumbersome operation. Utility Model Content

[0005] In order to solve the technical problems in the background technology, the utility model discloses a safety door for an injection molding machine capable of changing molds in multiple directions.

[0006] The utility model provides a multi-directional mold-changing safety door for an injection molding machine, comprising a safety door body, which is installed on a frame of the injection molding machine, a baffle plate is arranged on the frame, and a spacing is arranged between the baffle plate and one end of the frame, so that an unobstructed loading and unloading space is formed between the end of the frame and the baffle plate;

[0007] The lower end of the frame is provided with a lower rail horizontally penetrating the loading and unloading space, and the lower end of the safety door body is provided with a lower pulley engaged with the lower rail. The loading and unloading space is opened or closed by sliding the safety door body;

[0008] The upper end of the baffle is provided with a first roller and a slide plate clamped with the first roller;

[0009] A second roller is arranged on the slide plate, and an upper slide rail for clamping the second roller is arranged on the upper end of the safety door body;

[0010] When the safety door body is closed, the slide plate portion overlaps with the baffle plate, and the remaining portion overlaps with the safety door body.

[0011] When the safety door body is opened, the upper end of the loading and unloading space is unobstructed, so that there is no height limit for the loading and unloading space. Therefore, the mold can be replaced from both sides of the injection molding machine. Compared with the traditional mold replacement by lifting, the operation is simple and convenient; the upper end of the safety door body is slidably connected to the baffle through a slide plate, so that the safety strength of the upper end of the safety door body is higher, and the sliding of the safety door body is more stable. When the safety door body is closed, the position is also more stable and not easy to shake.

[0012] When the safety door body is closed, it is easy to disengage from the first roller. Based on this, further improvements are: a mounting plate is provided on the inner side of the baffle; the first roller is installed on the mounting plate; the first roller is arranged at a position close to the loading and unloading space; the length of the slide plate is set so that when the safety door body is closed, the slide plate and the first roller are still in a connected state.

[0013] In order to improve the moving stability of the skateboard, a further design is: the first rollers are arranged in two rows, each row is provided with two first rollers; a positioning plate is extended upwardly from the skateboard and inserted between the two rows of first rollers; the lower end of the mounting plate is connected to a horizontally arranged support plate, the skateboard is located at the upper end of the support plate, and is slidably connected to the support plate.

[0014] When the mounting plate is worn, it needs to be replaced as a whole, which involves the disassembly and assembly of the first roller, resulting in cumbersome operation and high cost. Based on this, a further improvement is that a wear-resistant plate is provided at the upper end of the support plate, and the wear-resistant plate contacts the slide plate. The provision of the wear-resistant plate not only prolongs the service life, but also when the wear-resistant plate is worn, the wear-resistant plate can be replaced without involving the disassembly and assembly of the first roller.

[0015] In order to improve the moving stability of the upper end of the safety door, a further design is that the second rollers are arranged in two rows, upper and lower; and the upper slide rail is clamped between the second rollers in the upper and lower rows.

[0016] In order to enable the slide plate to slide outward stably, a further design is: a raised force block is provided on the inner side of the slide plate; a raised push block is provided on the upper slide rail, and the push block corresponds to the force block. When the safety door body moves to the point where the push block abuts against the force block, the push block applies pressure to the force block to push the slide plate to move.

[0017] In order to improve the position stability of the safety door body after it is closed, further improvements are as follows: an elastic U-shaped card plate is installed at the lower end of the frame, located outside the loading and unloading space, and its opening faces the baffle; a limit column corresponding to the card plate is provided at the lower end of the safety door body; when the safety door body is closed, the limit column is clamped in the card plate to fix the safety door body.

[0018] Since the limit column is prone to horizontal movement when it is clamped to the clamping plate, further improvements are made based on this: the center position of the side wall of the clamping plate is an arc-shaped plate protruding outward; the limit column is clamped in the arc-shaped plate; the outer end of the arc-shaped plate is connected to a guide plate; the guide plate forms a flared wedge. The arc-shaped plate is used to improve the position stability of the limit column; the guide plate is used for the clamping guide of the limit column.

[0019] Since the safety door body is heavy and has great inertia when moving, the limit column is likely to pass over the curved plate and produce a loud impact noise when it is clamped with the card plate. Based on this, a further improvement is made: a buffer block extending toward the curved plate is connected to the bottom of the card plate, which is used for limiting the position of the limit column and also for buffering the limit column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0024] Figure 4 It is a right view of the utility model;

[0025] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0026] Figure 6 It is a left view of the utility model;

[0027] Figure 7 yes Figure 6 The enlarged view of point D in the middle;

[0028] Figure 8 It is a schematic diagram of the installation structure of the slide plate and the upper slide rail;

[0029] Fig. 9 This is the main view of the pallet;

[0030] In the figure: 1. safety door body; 2. frame; 3. baffle; 4. lower slide rail; 5. lower pulley; 6. first roller; 7. slide plate; 8. second roller; 9. upper slide rail; 10. mounting plate; 11. support plate; 12. wear-resistant plate; 13. clamping plate; 14. limit column; 15. buffer block; 71. positioning plate; 72. force block; 91. push block; 101. fixing part; 102. mounting part; 103. connecting plate; 131. arc plate; 132. guide plate; 133. connecting part; 134. bottom. DETAILED DESCRIPTION

[0031] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0032] like Figure 1 As shown, the utility model discloses a safety door for an injection molding machine capable of changing molds in multiple directions, comprising a safety door body 1, which is mounted on a frame 2 of the injection molding machine. A baffle plate 3 is arranged on the frame 2, and a spacing is arranged between the baffle plate 3 and one end of the frame 2, so that an unobstructed loading and unloading space is formed between this end of the frame 2 and the baffle plate 3.

[0033] The lower end of the frame 2 is provided with a horizontally arranged lower rail 4, which passes through the bottom of the loading and unloading space. The lower end of the safety door body 1 is provided with a lower pulley 5 which is engaged with the upper end of the lower rail 4, and the lower pulley 5 is provided with an annular groove, which is engaged with the upper end of the lower rail 4 to achieve sliding guidance. The loading and unloading space is opened or closed by sliding the safety door body 1.

[0034] A mounting plate 10 is provided inside the upper end of the baffle 3. The mounting plate 10 includes a vertically arranged fixing portion 101, which fits the inner side of the baffle 3 and is fixed by welding or bolting. A mounting portion 102 extends horizontally from the lower end of the fixing portion 101, and a connecting plate 103 extends downward from one end of the mounting portion 102 away from the baffle 3. Two rows of first rollers 6 arranged at intervals are installed at the lower end of the mounting portion 102, and each row is provided with two first rollers 6 arranged at intervals.

[0035] There is a U-shaped end portion and a horizontally arranged skateboard 7, whose opening faces the baffle 3. A positioning plate 71 extends upward from the open end on the upper side of the skateboard 7 and is inserted between the two rows of first rollers 6 to achieve a sliding connection between the skateboard 7 and the mounting plate 10. An L-shaped support plate 11 is also installed on the mounting plate 10, which is composed of a vertical portion and a horizontal portion. The vertical portion fits against the inner side of the connecting plate 103 and is fixed by welding or bolting. The horizontal portion is located directly below the first roller 6 and is connected to the lower end of the skateboard 7 to support the skateboard 7. Figure 4 and Figure 5 As shown, a wear plate 12 is also provided at the upper end of the horizontal portion and fixed by bolts. The wear plate 12 contacts the slide plate 7, which can reduce the degree of wear and extend the service life. Moreover, when the wear plate 12 is worn to the point where it needs to be replaced, the wear plate 12 can be replaced. Compared with the traditional operation of replacing the mounting plate 10, it is not only low-cost but also easy to operate.

[0036] like Figure 6 and Figure 7 As shown, two rows of second rollers 8 are installed inside the slide plate 7, and each row is provided with two second rollers 8. A horizontally arranged upper slide rail 9 is installed at the upper end of the inner side surface of the safety door body 1, and the upper slide rail 9 is provided with a raised positioning block, so that the end surface of the upper slide rail 9 is T-shaped. The positioning block is clamped between the two rows of second rollers 8, so as to realize the sliding connection between the upper slide rail 9 and the slide plate 7.

[0037] like Figure 8As shown, a cylindrical force block 72 is provided on the inner side of the slide 7 and near the 2 / 5 position of the inner end of the slide 7. A push block 91 is provided on the safety door body 1, which is at the same horizontal position as the force block 72 and is located on the inner side of the force block 72. When the safety door body 1 is closed, the push block 91 applies force to the force block 72 to drive the slide 7 to move, so that when the safety door is closed, 2 / 5 of the slide 7 overlaps with the baffle 3, and the remaining part overlaps with the safety door body 1. In this way, the safety strength of the upper end of the safety door body 1 can be improved, so that the sliding of the safety door body 1 is more stable, and when the safety door body 1 is closed, the position is more stable and not easy to shake. An elastic block is installed on the side of the push block 91 close to the force block 72. The elastic block can be made of tendon or rubber for buffering to avoid noise when the push block 91 hits the force block 72.

[0038] The first roller 6 and the second roller 8 are both installed near the loading and unloading space, so that when the safety door body 1 is closed, the slide plate 7 is connected to all the first rollers 6, and the upper slide rail 9 is connected to all the second rollers 8. This not only improves the position stability of the slide plate 7 and the upper slide rail 9, but also facilitates the closing of the safety door body 1.

[0039] like Figure 2 As shown, a clamping plate 13 is installed at the lower end of the frame 2, outside the loading and unloading space. The clamping plate 13 is in a U shape with an opening toward the baffle 3, and is formed by bending a steel plate, so that the clamping plate 13 has elasticity.

[0040] like Fig. 9 As shown, the clamping plate 13 includes a bottom 134, and the upper and lower ends of the bottom 134 lead to a connection part 133 with a narrowed opening, and the end of the connection part 133 leads to an arc plate 131 with an opposite bowing direction, and the end of the arc plate 131 leads to a guide plate 132 that is wedge-shaped and flared. The lower end of the safety door body 1 is provided with a limit column 14 corresponding to the clamping plate 13; when the safety door body 1 is closed, the limit column 14 first contacts the guide plate 132, and the guide plate 132 is deformed and opened; then the limit column 14 passes over the guide plate 132 and is clamped in the arc plate 131, at which time the guide plate 132 is reset, so that the position of the limit column 14 is fixed. In this way, the position of the safety door body 1 is more stable when it is closed. The inner side surface of the bottom 134 is also equipped with a buffer block 15 extending in the direction of the arc plate 131, which is flush with the open end of the connection part 133. The material of the buffer block 15 can be beef tendon or rubber, which is not only used for limiting the position of the limiting column 14, but also used for buffering the limiting column 14 to avoid noise.

[0041] like Figure 3As shown, the lower end of the outer end of the slide plate 7 is also provided with a limit column 14, and the upper end of the inner side of the safety door body 1 is also provided with a clamping plate 13 for clamping the limit column 14. In this way, when the safety door body 1 is opened, the clamping plate 13 gradually approaches the limit column 14 and clamps the limit column 14, and then the safety door body 1 continues to open and pushes the slide plate 7 to move toward the baffle 3. When the safety door body 1 is fully opened, the upper slide rail 9 and the slide plate 7 are hidden in the mounting plate 10.

[0042] When the safety door body 1 is opened, the upper end of the loading and unloading space is not blocked, so that the loading and unloading space has no height restriction, thereby the mold can be replaced from both sides of the injection molding machine. Compared with the traditional mold replacement by lifting, the operation is simple and convenient.

[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A safety door for an injection molding machine capable of changing molds in multiple directions, comprising a safety door body (1), mounted on a frame (2) of the injection molding machine, characterized in that: The frame (2) is provided with a baffle (3), and a distance is provided between the baffle (3) and one end of the frame (2), so that an unobstructed loading and unloading space is formed between the end of the frame (2) and the baffle (3); The lower end of the frame (2) is provided with a lower rail (4) horizontally penetrating the loading and unloading space, and the lower end of the safety door body (1) is provided with a lower pulley (5) engaged with the lower rail (4), and the loading and unloading space is opened or closed by sliding the safety door body (1); The upper end of the baffle (3) is provided with a first roller (6) and a slide plate (7) clamped to the first roller (6); The slide plate (7) is provided with a second roller (8), and the upper end of the safety door body (1) is provided with an upper slide rail (9) for clamping the second roller (8); When the safety door body (1) is closed, part of the slide plate (7) overlaps with the baffle plate (3), and the remaining part overlaps with the safety door body (1).

2. The multi-directional mold-changing safety door for injection molding machines according to claim 1 is characterized in that: A mounting plate (10) is provided on the inner side of the baffle (3); The first roller (6) is mounted on a mounting plate (10); The first roller (6) is arranged at a position close to the loading and unloading space; The length of the slide plate (7) is set when the safety door body (1) is closed.

3. The multi-directional mold-changing safety door for injection molding machines according to claim 2 is characterized in that: The first rollers (6) are arranged in two rows, with each row being provided with two first rollers (6); The slide plate (7) is provided with a positioning plate (71) extending upward and inserted between two rows of the first rollers (6).

4. The multi-directional mold-changing safety door for injection molding machines according to claim 3 is characterized in that: The lower end of the mounting plate (10) is connected to a horizontally arranged supporting plate (11), and the sliding plate (7) is located at the upper end of the supporting plate (11) and is slidably connected to the supporting plate (11).

5. The multi-directional mold-changing safety door for injection molding machines according to claim 4 is characterized in that: A wear-resistant plate (12) is provided at the upper end of the support plate (11), and the wear-resistant plate (12) is in contact with the slide plate (7).

6. The multi-directional mold-changing safety door for injection molding machines according to claim 4 is characterized in that: The second rollers (8) are arranged in two rows, upper and lower; The upper slide rail (9) is clamped between the upper and lower rows of second rollers (8).

7. The multi-directional mold-changing safety door for injection molding machines according to claim 1 is characterized in that: A protruding force-bearing block (72) is provided on the inner side of the slide plate (7); A protruding push block (91) is provided on the upper slide rail (9), and the push block (91) corresponds to the force block (72). When the safety door body (1) moves until the push block (91) abuts against the force block (72), the push block (91) applies a thrust force to the force block (72), thereby pushing the slide plate (7) to move.

8. The multi-directional mold-changing safety door for injection molding machines according to claim 1 is characterized in that: An elastic U-shaped clamping plate (13) is installed at the lower end of the frame (2) and at a position outside the loading and unloading space, and its opening faces the baffle (3); The lower end of the safety door body (1) is provided with a limiting column (14) corresponding to the clamping plate (13); When the safety door body (1) is closed, the limiting column (14) is clamped in the clamping plate (13) to fix the safety door body (1).

9. The multi-directional mold-changing safety door for injection molding machines according to claim 8, characterized in that: The center position of the side wall of the clamping plate (13) is an outwardly protruding arc-shaped plate (131); The limiting column (14) is clamped in the arc-shaped plate (131); The outer end of the arc-shaped plate (131) is connected to a guide plate (132); the guide plate (132) forms a flared wedge shape.

10. The multi-directional mold-changing safety door for injection molding machines according to claim 9, characterized in that: The bottom of the clamping plate (13) is connected to a buffer block (15) extending in the direction of the arc-shaped plate (131).

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