Injection molding machine with mechanical safeguard mechanism

Abstract

The utility model discloses an injection molding machine with mechanical protection mechanism relates to loudspeaker production technical field, the utility model discloses a movable die, fixed mould, injection molding machine body is provided with the frame on the injection molding machine body and is fixed, and the frame has first protective door and second protective door, first protective door is fixedly connected with movable die, and second protective door is slidably connected with first protective door, the top of frame is fixedly provided with drive gear plate, and the top of first protective door is rotatably provided with gear set, and second protective door is provided with driven gear plate, first protective door and movable die fixed connection can make movable die when moving first protective door, second protective door can move to avoid the problem of not timely protection, simultaneously, through the cooperation of gear set, drive gear plate, driven gear plate makes second protective door close first, if movable die moves, and the staff's limbs are still in the frame, then second protective door will contact with the limbs, and the staff is reminded movable die is moving.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker manufacturing technology, specifically to an injection molding machine with a mechanical protective mechanism. Background Technology

[0002] A loudspeaker is an electroacoustic transducer that converts electrical signals (electrical energy) into sound signals (sound energy). It is the core output component of audio playback systems (such as televisions and car audio systems). Essentially, it generates sound waves by physically vibrating the air, which are ultimately perceived as sound by the human ear. It is widely used in daily life, entertainment, communication, and industry, and is a key device for achieving "sound output." The plastic speaker frame is manufactured using an injection molding machine, which is a core piece of equipment in the plastics processing industry.

[0003] When producing speaker frames using injection molding machines, steps such as demolding, mold cleaning, and applying release agent are required after the fixed mold and moving mold separate. Most of these steps are done manually, so protective devices are needed to prevent workers from being pinched. However, some existing injection molding machine protective mechanisms have a delayed response in the initial stage of moving mold closing. Often, the protective mechanism only starts to activate after the moving mold has already moved a certain distance. If the operator is close to the mold closing area at this time, there is still a risk of being pinched, indicating that the timeliness of the protective mechanism is insufficient. Utility Model Content

[0004] The purpose of this invention is to provide an injection molding machine with a mechanical protective mechanism to overcome the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection molding machine with a mechanical protective mechanism, comprising an injection molding machine body having a moving mold, a fixed mold, and a hydraulic system, a frame fixedly mounted on the injection molding machine body, and a first protective door and a second protective door slidably mounted on the frame; the first protective door is fixedly connected to the moving mold, and the second protective door is slidably connected to the first protective door; a drive gear plate is fixedly mounted on the top of the frame, a gear set is rotatably mounted on the top of the first protective door, and a driven gear plate is mounted on the second protective door.

[0006] Preferably, the top of the frame has two roller tracks, and the bottom of both the first and second protective doors are provided with two rollers.

[0007] Preferably, the top of the frame is provided with a first slide groove and a second slide groove, and the drive tooth plate is fixedly disposed in the first slide groove.

[0008] Preferably, the gear set includes a drive gear meshing with a drive gear plate and a driven gear meshing with a driven gear plate, wherein the drive gear and the driven gear are fixedly connected.

[0009] Preferably, a fixed block is fixedly installed on the side of the second protective door close to the first protective door, and a movable block is fixedly installed on the driven tooth plate. The movable block is slidably connected to the second protective door, and two springs are fixedly installed between the fixed block and the movable block.

[0010] Preferably, a rubber sleeve is fixedly installed on the side of the second protective door near the fixed mold.

[0011] Preferably, a magnetic block is embedded inside the rubber sleeve.

[0012] In the above technical solution, this utility model provides an injection molding machine with a mechanical protective mechanism, which has the following beneficial effects: the first protective door and the second protective door block the opening of the frame during injection molding. The first protective door is fixedly connected to the moving mold, so that the first and second protective doors can move when the moving mold moves, thereby avoiding the problem of untimely protection. At the same time, the second protective door closes first through the cooperation of the gear set, the drive gear plate, and the driven gear plate. If the worker's limbs are still inside the frame when the moving mold moves, the second protective door will contact the limbs to remind the worker that the moving mold is moving. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0015] Figure 2 A schematic diagram of the structure of the first protective door provided in an embodiment of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the drive gear plate provided in an embodiment of the present utility model;

[0017] Figure 4 A schematic diagram of the gear set provided in an embodiment of this utility model;

[0018] Figure 5 A schematic diagram of the spring provided for an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Frame; 2. Injection molding machine body; 3. Moving mold; 4. Fixed mold; 5. Hydraulic system; 6. First protective door; 7. Second protective door; 8. Moving block; 9. Fixed block; 10. First slide rail; 11. Second slide rail; 12. Drive gear plate; 13. Drive gear; 14. Driven gear; 15. Driven gear plate; 16. Slide rod; 17. Spring; 18. Roller; 19. Connecting plate; 20. Raceway; 21. Rubber sleeve. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-5 An injection molding machine with a mechanical protective mechanism is disclosed. The proposed technical solution includes an injection molding machine body 2 comprising a moving mold 3, a fixed mold 4, and a hydraulic system 5. A frame 1 is fixedly mounted on the injection molding machine body 2, and a first protective door 6 and a second protective door 7 are slidably mounted on the frame 1. The first protective door 6 is fixedly connected to the moving mold 3, and the second protective door 7 is slidably connected to the first protective door 6. A drive gear plate 12 is fixedly mounted on the top of the frame 1, a gear set is rotatably mounted on the top of the first protective door 6, and a driven gear plate 15 is mounted on the second protective door 7. The moving mold 3, fixed mold 4, and other components on the injection molding machine body 2 are housed within the frame 1, and the hydraulic system 5 is connected to the moving mold 3. The mold 3 is connected, and the hydraulic system 5 drives the moving mold 3 to move back and forth. This is in the existing technology. The frame 1 has an opening for the operator to move around. When the moving mold 3 is separated from the fixed mold 4, the moving mold 3 and the fixed mold 4 are on opposite sides of the opening. The first protective door 6 and the second protective door 7 are slidably installed on the side wall of the frame 1. A connecting plate 19 is fixedly installed between the inner side of the first protective door 6 and the moving mold 3. The gear set is rotatably installed on the top of the first protective door 6 near the fixed mold 4. The first gear set meshes with the driving gear plate 12 and the driven gear plate 15. The driving gear plate 12 is on the upper side of the gear set, the driven gear plate 15 is on the lower side of the gear set, and the driving gear plate 12 is above the opening. Figure 1 As shown, when the first protective door 6 and the second protective door 7 overlap and open, demolding and cleaning can be performed. When the moving mold 3 moves towards the fixed mold 4, the first protective door 6 is directly driven to move along with it through the connecting plate 19, thereby avoiding the problem of untimely response of the protective mechanism. When the first protective door 6 moves towards the fixed mold 4, the gear set on the first protective door 6 meshes with the drive gear plate 12, thereby driving the gear set to rotate counterclockwise during the movement. When the gear set rotates counterclockwise, it will push the driven gear plate 15 to move towards the fixed mold 4, thereby driving the second protective door 7 to move. The moving speed of the second protective door 7 is greater than the moving speed of the moving mold 3. At this time, if the worker's limbs are between the moving mold 3 and the fixed mold 4, the second protective door 7 will collide with the worker's limbs, so that the worker knows that the moving mold 3 is moving towards the fixed mold 4.

[0023] Specifically, two raceways 20 are provided at the top of the frame 1, and two rollers 18 are rotatably installed at the bottom of both the first protective door 6 and the second protective door 7; the two rollers 18 on both sides of the bottom of the first protective door 6 and the second protective door 7 are located within the corresponding raceways 20. The cooperation between the rollers 18 and the raceways 20 can support and limit the first protective door 6 and the second protective door 7, and reduce friction, such as... Figure 1 As shown, when the moving mold 3 separates from the fixed mold 4, both the first protective door 6 and the second protective door 7 are located at the end of the raceway 20 away from the fixed mold 4.

[0024] Specifically, the top of the frame 1 is provided with a first slide groove 10 and a second slide groove 11. The drive tooth plate 12 is fixedly installed in the first slide groove 10. The top of the first protective door 6 is slidably installed in the first slide groove 10, and the top of the second protective door 7 is slidably installed in the second slide groove 11. The top of the first protective door 6 is slidably connected to the side wall of the first slide groove 10. The first slide groove 10 and the second slide groove 11 further limit the first protective door 6 and the second protective door 7, thereby preventing them from deviating or falling off.

[0025] Specifically, the gear set includes a drive gear 13 that meshes with the drive gear plate 12, and a driven gear 14 that meshes with the driven gear plate 15. The drive gear 13 and the driven gear 14 are fixedly connected. Figure 4 As shown, the widths of the first protective door 6 and the second protective door 7 are the same as the opening width of the frame 1. The drive gear plate 12 is located directly above the opening on the side closest to the hydraulic system 5, and the length of the drive gear plate 12 is equal to half the opening width. When the first protective door 6 moves to the right of the fixed mold 4, the drive gear plate 12 drives the gear set to rotate counterclockwise, which in turn causes the driven gear 14 to rotate counterclockwise, driving the driven gear plate 15 to move to the right. At this time, the speed at which the driven gear plate 15 moves is twice the speed at which the moving mold 3 moves. When the moving mold 3 moves to the middle position of the opening, the first protective door 6 and the second protective door 7 have blocked the opening. The second protective door 7 is in contact with the side wall of the opening and will not move further. As the moving mold 3 moves, when the drive gear 13 and the drive gear plate 12... When separated, the first protective door 6 will no longer push the second protective door 7 to move. At this time, the driven gear 14 is still engaged with the driven gear plate 15. As the first protective door 6 moves towards the fixed mold 4, the gear set rotates clockwise. When the moving mold 3 and the fixed mold 4 are fully closed, the first protective door 6 and the second protective door 7 overlap and both abut against the side wall of the opening. When the injection molding is completed and the moving mold 3 moves away from the fixed mold 4, the second protective door 7 does not move at first. The first protective door 6 moves to the left first under the drive of the connecting plate 19 and the moving mold 3. When the gear set on the first protective door 6 abuts against the drive gear plate 12 again, the drive gear plate 12 drives the gear set to rotate clockwise. At this time, the driven gear 14 drives the second protective door 7 to move towards the moving mold 3, so that all parts are reset.

[0026] Specifically, a fixed block 9 is fixedly installed on the side of the second protective door 7 near the first protective door 6, and a movable block 8 is fixedly installed on the driven toothed plate 15. The movable block 8 is slidably connected to the second protective door 7. Two springs 17 are fixedly installed between the fixed block 9 and the movable block 8. Two sliding rods 16 are also fixedly installed on the fixed block 9. Both sliding rods 16 are slidably connected to the movable block 8. When the gear set drives the driven toothed plate 15 to move, the fixed block 9 is driven to move through the springs 17, which in turn drives the second protective door 7 to move. The movable block 8 can only slide on the second protective door 7 and cannot separate from it. When the second protective door 7 comes into contact with the worker's limbs, since the moving mold 3 is still moving, the movable block 8 will slide towards the fixed block 9, and the springs 17 will generate a certain amount of compression. The second protective door 7 will not move, thereby preventing the second protective door 7 from excessively squeezing the worker.

[0027] Specifically, a rubber sleeve 21 is fixedly installed on the side of the second protective door 7 near the fixed mold 4; the rubber sleeve 21 can prevent the second protective door 7 from injuring the staff when it comes into contact with the staff's limbs.

[0028] Specifically, a magnetic block is embedded in the rubber sleeve 21; the side wall of the opening of the frame 1 can be attracted to the magnetic material. When the moving mold 3 moves and the second protective door 7 first comes into contact with the side wall of the opening, the magnetic block is attracted to the side wall of the opening, thereby preventing the second protective door 7 from moving easily.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine with a mechanical protective mechanism, comprising an injection molding machine body (2) having a moving mold (3), a fixed mold (4), and a hydraulic system (5), characterized in that, A frame (1) is fixedly installed on the injection molding machine body (2), and a first protective door (6) and a second protective door (7) are slidably installed on the frame (1). The first protective door (6) is fixedly connected to the moving mold (3), and the second protective door (7) is slidably connected to the first protective door (6); The top of the frame (1) is fixedly provided with a drive gear plate (12), the top of the first protective door (6) is rotatably provided with a gear set, and the second protective door (7) is provided with a driven gear plate (15).

2. The injection molding machine with a mechanical protective mechanism according to claim 1, characterized in that, The frame (1) has two roller tracks (20) on the top, and the bottom of the first protective door (6) and the second protective door (7) are each provided with two rollers (18).

3. An injection molding machine with a mechanical protective mechanism according to claim 2, characterized in that, The top of the frame (1) is provided with a first slide groove (10) and a second slide groove (11), and the drive tooth plate (12) is fixedly installed in the first slide groove (10).

4. An injection molding machine with a mechanical protective mechanism according to claim 3, characterized in that, The gear set includes a drive gear (13) meshing with a drive gear plate (12) and a driven gear (14) meshing with a driven gear plate (15). The drive gear (13) and the driven gear (14) are fixedly connected.

5. An injection molding machine with a mechanical protective mechanism according to claim 4, characterized in that, A fixed block (9) is fixedly installed on the side of the second protective door (7) near the first protective door (6), and a moving block (8) is fixedly installed on the driven toothed plate (15). The moving block (8) is slidably connected to the second protective door (7), and two springs (17) are fixedly installed between the fixed block (9) and the moving block (8).

6. An injection molding machine with a mechanical protective mechanism according to claim 5, characterized in that, A rubber sleeve (21) is fixedly installed on the side of the second protective door (7) near the fixed mold (4).

7. An injection molding machine with a mechanical protective mechanism according to claim 6, characterized in that, The rubber sleeve (21) is inlaid with a magnetic block.

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