Safety protection device for injection molding machine

Abstract

The utility model discloses a safety protection device for an injection molding machine, and relates to the field of safety protection doors of injection molding machines, the safety protection device comprises a fixed protection door, a through groove is formed in the fixed protection door, a movable protection door is installed at the back end of the fixed protection door in a sliding mode, and the movable protection door is used for closing the through groove. One end of the movable protective door is fixedly connected with an attaching plate in butt joint with the end of the inner side of the fixed protective door, and a protective mechanism is fixedly installed at one end of the periphery of the fixed protective door and used for preventing the movable protective door in a closed state from being opened by mistake; the protection mechanism comprises a power assembly and a dislocation assembly. According to the utility model, by arranging the protection mechanism, the condition that the movable protection door is opened due to stress can be avoided, so that a worker is prevented from being in contact with a mold in injection molding, and the safety risk in the injection molding process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of safety protection doors for injection molding machines, in particular to a safety protection device for injection molding machines. Background Art

[0002] The safety protection door of the injection molding machine includes a fixed protection door connected to the outer shell and a movable protection door slidably connected to the fixed protection door. When the movable protection door is opened, the staff can take the injection-molded product out of the opened mold through the through slot.

[0003] In the prior art, the movable protective door and the fixed protective door are generally connected by magnetic attraction. This method can ensure that the movable protective door is in a closed state when there is no external force. However, when there is force, the movable protective door is easily opened accidentally, causing the mold being injected by the staff to be connected to the outside world. The temperature of the mold being injected is extremely high, which is prone to safety risks. Utility Model Content

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

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety protection device for an injection molding machine, comprising a fixed protection door, a through slot is provided inside the fixed protection door, a movable protection door is slidably installed on the back end of the fixed protection door, the movable protection door is used to close the through slot, one end of the movable protection door is fixedly connected to a fitting plate corresponding to the inner end of the fixed protection door, and a protective mechanism is fixedly installed on the outer end of the fixed protection door, the protective mechanism is used to prevent the movable protection door in a closed state from being opened by mistake;

[0006] The protective mechanism includes a power component and a misalignment component. The misalignment component is distributed at the output end of the power component and inside the bonding plate. When the two parts of the misalignment component are misaligned, they are used to prevent the mobile protective door from being opened. When the two parts of the misalignment component are in an aligned state, the mobile protective door can be opened smoothly.

[0007] As a further solution of the utility model: the power assembly includes a fixed vertical plate fixedly installed on one end of the outside of the fixed protective door, a fixed ear is fixedly installed on the top of one side of the fixed vertical plate, an electric push cylinder is installed on the bottom end of the fixed ear, a rack is fixedly installed on the output end of the electric push cylinder, and a half gear is meshed on the outer periphery of the rack.

[0008] As a further solution of the utility model: the offset assembly includes a rotating shaft fixedly installed on one end of the half gear, the rotating shaft is rotatably connected to the end plate of the fixed protective door, and the outer periphery of one end of the rotating shaft away from the half gear is integrally formed with a protruding block protruding outward.

[0009] As a further solution of the utility model: the dislocation component also includes a circular hole opened inside the bonding plate, the circular hole is used for the rotation of the rotating shaft, and the inside of the bonding plate is formed with a docking hole on the outer axis of the circular hole.

[0010] As a further solution of the utility model: a torsion spring is fixedly connected between one end surface of the half gear and one end of the outer wall of the fixed protective door, and the torsion spring is sleeved on the outer periphery of the rotating shaft.

[0011] As a further solution of the utility model: the outer periphery of the protrusion is consistent with the inner wall of the docking hole.

[0012] As a further solution of the utility model: a connecting groove is opened on one side of the fixed vertical plate, and a connecting slider is slidably connected to the inner wall of the connecting groove, one end of the connecting slider is fixedly connected to the top of the rack, and the cross-section of the connecting slider and the connecting groove presents a "convex" shaped structure.

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

[0014] 1. By setting up a protective mechanism, it is possible to avoid the situation where the mobile protective door is opened due to force, thereby preventing the staff from coming into contact with the mold being injected, thereby reducing the safety risks during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the protection mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation of the bump of the utility model.

[0019] In the figure: 1. Fixed protective door; 2. Through slot; 3. Movable protective door; 4. Fixed vertical plate; 5. Fixed ear; 6. Electric push cylinder; 7. Laminating plate; 8. Rack; 9. Connecting slide groove; 10. Connecting slider; 11. Half gear; 12. Rotating shaft; 13. Torsion spring; 14. Docking hole; 15. Bump. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 to Figure 4 In the embodiment of the utility model, the safety protection device for the injection molding machine includes a fixed protection door 1, a through groove 2 is opened inside the fixed protection door 1, a movable protection door 3 is slidably installed on the back end of the fixed protection door 1, and the movable protection door 3 is used to close the through groove 2, and one end of the movable protection door 3 is fixedly connected to a bonding plate 7 which is opposite to the inner end of the fixed protection door 1, and a protection mechanism is fixedly installed on the outer end of the fixed protection door 1, and the protection mechanism is used to prevent the movable protection door 3 in the closed state from being opened by mistake; the protection mechanism includes a power component and a misalignment component, and the misalignment component is distributed at the output end of the power component and the inside of the bonding plate 7, and when the two parts of the misalignment component are in a misaligned state, the movable protection door 3 is used to prevent the movable protection door 3 from being opened, and when the two parts of the misalignment component are in an aligned state, the movable protection door 3 can be opened smoothly.

[0022] In this embodiment: First, after the movable protective door 3 is completely closed, the movable protective door 3 drives the bonding plate 7 to fit with the inner end of the fixed protective door 1. At this time, by starting the power component, the power component drives the two parts of the dislocation mechanism to be dislocated. At this time, the bonding plate 7 is limited and cannot move. Then the movable protective door 3 cannot move, which can prevent the movable protective door 3 from being unable to be opened, thereby avoiding the problem of ineffective protection caused by the movable protective door 3 being opened.

[0023] Please refer to Figure 3 and Figure 4 The power assembly includes a fixed vertical plate 4 fixedly installed on one end of the outside of the fixed protective door 1, a fixed ear 5 is fixedly installed on the top of one side of the fixed vertical plate 4, an electric push cylinder 6 is installed on the bottom end of the fixed ear 5, a rack 8 is fixedly installed on the output end of the electric push cylinder 6, and a half gear 11 is meshed on the outer periphery of the rack 8.

[0024] In this embodiment: by starting the electric push cylinder 6, the output end of the electric push cylinder 6 pushes the top crossbar of the rack 8 to move downward, and the rack 8 moving downward engages with the half gear 11 during the downward movement, that is: the rack 8 moving downward drives the half gear 11 to rotate, and since the tooth blocks on the outer periphery of the half gear 11 are distributed in the direction of one hundred and eighty degrees, the maximum rotation angle of the half gear 11 is one hundred and eighty degrees.

[0025] Please refer to Figure 3 and Figure 4 The offset assembly includes a rotating shaft 12 fixedly mounted on one end of the half gear 11, the rotating shaft 12 is rotatably connected to the end plate of the fixed protective door 1, and an outer periphery of the end of the rotating shaft 12 away from the half gear 11 is integrally formed with a protruding block 15 protruding outward. The offset assembly also includes a circular hole opened inside the bonding plate 7, the circular hole is used for the rotating shaft 12 to rotate, and a docking hole 14 is formed on the outer axis of the circular hole inside the bonding plate 7.

[0026] In this embodiment: during the rotation of the half gear 11, the half gear 11 drives the rotating shaft 12 to rotate synchronously, the synchronously rotating rotating shaft 12 drives the protrusion 15 to rotate synchronously, and the rotating protrusion 15 drives the docking hole 14 to be misaligned, and the bonding plate 7 cannot move at this time.

[0027] Please refer to Figure 3 and Figure 4 A torsion spring 13 is fixedly connected between one end surface of the half gear 11 and one end of the outer wall of the fixed protective door 1 . The torsion spring 13 is sleeved on the outer periphery of the rotating shaft 12 . The outer periphery of the protrusion 15 coincides with the inner wall of the docking hole 14 .

[0028] In this embodiment: when the half gear 11 rotates, the rotating half gear 11 drives one end of the torsion spring 13 to be twisted, while the end of the torsion spring 13 connected to the fixed protective door 1 remains stationary, so the torsion spring 13 is twisted, and after the rack 8 moves upward and is completely misaligned with the half gear 11, the torsion spring 13 is reset, driving the rotating shaft 12 to reset, and the rotating shaft 12 drives the protrusion 15 to reset, and the completely reset protrusion 15 is aligned with the docking hole 14, and the movable protective door 3 can be opened.

[0029] Please refer to Figure 3 A connecting groove 9 is opened on one side of the fixed vertical plate 4, and a connecting slider 10 is slidably connected to the inner wall of the connecting groove 9. One end of the connecting slider 10 is fixedly connected to the top of the rack 8, and the cross-section of the connecting slider 10 and the connecting groove 9 is a "convex" shaped structure.

[0030] In this embodiment, when the rack 8 moves up and down, the rack 8 drives the connecting slider 10 to move along the connecting slide groove 9 to maintain the stability of the up and down movement of the rack 8.

[0031] 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 safety protection device for an injection molding machine, comprising a fixed protection door (1), wherein a through slot (2) is provided inside the fixed protection door (1), a movable protection door (3) is slidably mounted on the back end of the fixed protection door (1), and the movable protection door (3) is used to close the through slot (2), wherein the fixed protection door (1) is provided with a movable protection door (3) for closing the through slot (2), and the device is characterized in that: One end of the movable protective door (3) is fixedly connected to a fitting plate (7) which is in contact with the inner end of the fixed protective door (1); an outer end of the fixed protective door (1) is fixedly mounted with a protective mechanism, the protective mechanism being used to prevent the movable protective door (3) in a closed state from being opened by mistake; The protective mechanism comprises a power component and a misalignment component. The misalignment component is distributed at the output end of the power component and inside the bonding plate (7). When the two parts of the misalignment component are in a misaligned state, they are used to prevent the movable protective door (3) from being opened. When the two parts of the misalignment component are in an aligned state, the movable protective door (3) can be opened smoothly.

2. The safety protection device for injection molding machine according to claim 1, characterized in that: The power assembly comprises a fixed vertical plate (4) fixedly mounted on one end of the outside of the fixed protective door (1), a fixed ear (5) fixedly mounted on the top of one side of the fixed vertical plate (4), an electric push cylinder (6) mounted on the bottom end of the fixed ear (5), a rack (8) fixedly mounted on the output end of the electric push cylinder (6), and a half gear (11) meshing on the outer periphery of the rack (8).

3. The safety protection device for injection molding machine according to claim 2, characterized in that: The dislocation assembly comprises a rotating shaft (12) fixedly mounted on one end of the half gear (11), the rotating shaft (12) being rotatably connected to an end plate of the fixed protective door (1), and a protruding block (15) protruding outwards is integrally formed on the outer periphery of one end of the rotating shaft (12) away from the half gear (11).

4. The safety protection device for injection molding machine according to claim 3, characterized in that: The dislocation assembly further comprises a circular hole formed inside the bonding plate (7), the circular hole being used for the rotation of the rotating shaft (12), and a docking hole (14) is formed inside the bonding plate (7) on the outer axis of the circular hole.

5. The safety protection device for injection molding machine according to claim 4, characterized in that: A torsion spring (13) is fixedly connected between one end surface of the half gear (11) and one end of the outer wall of the fixed protective door (1), and the torsion spring (13) is sleeved on the outer periphery of the rotating shaft (12).

6. The safety protection device for injection molding machine according to claim 5, characterized in that: The outer periphery of the protrusion (15) matches the inner wall of the docking hole (14).

7. The safety protection device for injection molding machine according to claim 3, characterized in that: A connecting slide groove (9) is provided on one side of the fixed vertical plate (4), and a connecting slider (10) is slidably connected to the inner wall of the connecting slide groove (9), and one end of the connecting slider (10) is fixedly connected to the top of the rack (8), and the cross-section of the connecting slider (10) and the connecting slide groove (9) is a "convex"-shaped structure.

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