Injection molding machine

Abstract

The invention relates to the field of injection molding processing, in particular to an injection molding machine. An injection molding machine comprises a machine base, a sliding rail is fixed to the machine base through screws, a movable mold is connected to the sliding rail in a sliding mode, a fixed mold is fixed to the sliding rail through screws, a transverse rod is welded to the machine base, two clamping plates are connected to the transverse rod in a sliding mode, the lower end of each clamping plate is rotationally connected with an adjusting rod, and a chuck is welded to each adjusting rod. A plurality of rubber heads are bonded to each chuck, and a servo motor is arranged between each adjusting rod and the corresponding clamping plate. The transverse rod is fixedly connected with a longitudinal rod, the longitudinal rod is connected with a sliding block in a sliding mode, the sliding block is fixedly connected with the moving end of a telescopic rod, the fixed end of the telescopic rod is fixedly connected to the transverse rod, the sliding block is rotationally connected with one ends of two connecting rods, and the other end of each connecting rod is rotationally connected to the corresponding clamping plate. The part can be prevented from being collided and deformed when falling off from the mold, so that the yield is improved.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and more particularly to an injection molding machine. Background Art

[0002] An injection molding machine is a molding device that uses a plastic molding mold to make thermoplastics or thermosetting plastics into plastic products of various shapes. Injection molding machines are widely used. At present, plastic baffles for air-conditioning outlets are generally manufactured by injection molding. After demolding, the existing injection molding machine directly drops the parts into the slide and collects them. However, when the parts are not completely cooled, their strength will be too low, or there will be edges and corners at the bottom of the parts after injection molding. In both cases, the collision between the parts and the slide will cause deformation and scrapping, which will lead to an increase in the defective rate. Summary of the invention

[0003] The invention provides an injection molding machine, aiming to avoid deformation caused by collision when parts fall off from a mold, thereby improving the yield rate.

[0004] The above purpose is achieved through the following technical solutions:

[0005] An injection molding machine comprises a machine base, a slide rail is fixed on the machine base by screws, a movable mold is slidably connected to the slide rail, a fixed mold is fixed to the slide rail by screws, a cross bar is welded on the machine base, two clamping plates are slidably connected to the cross bar, the lower end of each clamping plate is rotatably connected to an adjusting rod, and a clamp is welded to each adjusting rod.

[0006] A plurality of rubber heads are bonded to each chuck, and a servo motor is arranged between each adjusting rod and the clamping plate.

[0007] The cross bar is fixedly connected with a longitudinal bar, the longitudinal bar is slidably connected with a slider, the slider is fixedly connected with the movable end of the telescopic rod, the fixed end of the telescopic rod is fixedly connected to the cross bar, the slider is rotatably connected to one end of two connecting rods, and the other end of each connecting rod is rotatably connected to the corresponding clamping plate.

[0008] A finished product box is fixed on the machine base by screws. The finished product box is located below the cross bar. An inclined plate is rotatably connected inside the finished product box. A spring is welded between the inclined plate and the finished product box. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of an injection molding machine;

[0010] Figure 2 It is a structural schematic diagram of the movable mold and the fixed mold part;

[0011] Figure 3 It is the structural diagram of the motor part;

[0012] Figure 4 It is a structural schematic diagram of the crossbar part;

[0013] Figure 5 It is a structural schematic diagram of the splint part;

[0014] Figure 6 It is a structural schematic diagram of the chuck part;

[0015] Figure 7 It is a structural schematic diagram of the finished box part;

[0016] Figure 8 This is a schematic diagram of the structure inside the finished box.

[0017] In the figure:

[0018] Machine base 11; locker 101; operating table 102; ladder 103; slide rail 104; blocking rod 105;

[0019] Movable mold 12; push plate 201; blocking plate 202; threaded rod 203; threaded disk 204; motor 205;

[0020] Fixed mold 13; extrusion tube 301; raw material box 302;

[0021] Crossbar 14; longitudinal bar 401; slider 402; telescopic rod 403; clamp 404; connecting rod 405; adjusting rod 406; clamp 407; rubber head 408; servo motor 409;

[0022] Finished product box 15; inclined plate 501; lifting plate 502; slot 503; push plate 504; threaded rod 505; discharge port 506. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 5 , in order to solve the problem of increasing the yield of parts.

[0026] A slide rail 104 is welded on the machine base 11, and the movable mold 12 is slidably connected to the slide rail 104. A fixed mold 13 is provided on the slide rail 104, and the two are fixed by screws. The cross bar 14 is welded on the top of the machine base 11, and two clamps 404 are slidably connected to the front and rear sides of the cross bar 14. Two adjusting rods 406 are respectively rotatably connected to the lower end of the cross bar 14, and each adjusting rod 406 is fixedly connected to a chuck 407.

[0027] Initially, the movable mold 12 and the fixed mold 13 are in a closed state. After the molten plastic is injected into the inside and cooled, the movable mold 12 is slid to the left, so that the part follows the movable mold 12 to separate from the fixed mold 13. Then, the two clamps 404 are driven to slide relatively on the cross bar 14, thereby driving the two adjustment rods 406 to move inward, and then driving the two clamps 407 to move inward to clamp the part. The adjustment rod 406 can be fixed after adjusting the length, thereby meeting the clamping requirements of the asymmetric parts. As the movable mold 12 continues to move, the part is separated from the movable mold 12, and then the two adjustment rods 406 are driven. The two clamps 404 are then moved in the opposite direction, so that the two clamps 407 no longer clamp the parts, and the processed parts are dropped for collection. Since the parts may not be sufficiently cooled after processing, the shaping is incomplete, and when they fall from between the two molds, the center of gravity is shifted, which makes it easy for the corners of the parts to collide during the falling process. The present invention can adjust the injection molded parts so that they fall with their larger and more stable side facing downward, thereby avoiding collisions during the falling process, which leads to an increase in the defective rate of parts.

[0028] like Figure 6 , in order to solve the problem that when the chuck 407 clamps the part with too much force, the part is deformed.

[0029] A plurality of rubber heads 408 are respectively bonded to the inner side of each clamp 407 . A servo motor 409 is fixed on the clamp plate 404 . An output shaft of the servo motor 409 is fixedly connected to the adjustment rod 406 .

[0030] The two servo motors 409 are driven to rotate synchronously in the same direction, thereby driving the adjusting rod 406 to rotate at the same time. When the clamp 404 moves inward, since the surface of the part contacted by the chuck 407 is not necessarily flat, a plurality of arc-shaped rubber heads 408 are provided to meet the clamping requirements of different contact surfaces. At the same time, the rubber heads 408 are soft in texture, thereby preventing the clamp 407 from moving too far due to the clamp 407 causing excessive pressure on the part and thus causing deformation.

[0031] like Figure 4 and Figure 5 , in order to solve the problem of the movement of the splint 404.

[0032] A longitudinal rod 401 is welded to the cross bar 14, a slider 402 is slidably connected to the longitudinal rod 401, a movable end of a telescopic rod 403 is welded to the slider 402, a fixed end of the telescopic rod 403 is welded to the cross bar 14, one end of two connecting rods 405 are respectively rotatably connected to one end of the slider 402, and the other end of each connecting rod 405 is rotatably connected to the corresponding clamping plate 404.

[0033] When it is necessary to move the clamping plate 404 inward, the telescopic rod 403 is driven to contract, thereby driving the slider 402 to move upward along the longitudinal rod 401, and then lifting the end of the connecting rod 405 connected to the slider 402, so that the connecting rod 405 is rotated, and the other end rotates inward, thereby driving the two clamping plates 404 to slide inward along the cross bar 14, thereby achieving the purpose of clamping the parts. Similarly, when it is necessary to release the parts, the telescopic rod 403 is driven to extend.

[0034] like Figure 7 and Figure 8 , in order to solve the problem of deformation caused by impact during the falling process of parts.

[0035] A finished product box 15 is fixedly connected to the machine base 11 . The finished product box 15 is located below the cross bar 14 . An inclined plate 501 is rotatably connected inside the finished product box 15 . A spring is fixedly connected between the inclined plate 501 and the finished product box 15 .

[0036] When the two clamps 407 separate and the parts fall, the parts fall into the finished product box 15 and then collide with the inclined plate 501 in the finished product box 15. The spring between the inclined plate 501 and the finished product box 15 is compressed, thereby buffering the parts. After that, the spring resets and drives the inclined plate 501 to an inclined state, thereby causing the parts to slide along the inclined plate 501 into the finished product box 15 for unified collection.

[0037] like Figure 7 and Figure 8 , to solve the problem of unified collection of parts.

[0038] A lifting plate 502 is slidably connected inside the finished product box 15, a spring is fixed between the lifting plate 502 and the finished product box 15, a slot 503 of the same shape as the lifting plate 502 is provided below the finished product box 15, a push plate 504 is slidably connected inside the finished product box 15, a threaded rod 505 is rotatably connected to the finished product box 15, the threaded rod 505 and the push plate 504 are threadedly connected, and a discharge port 506 is provided on the finished product box 15.

[0039] When the part slides down from the inclined plate 501 and onto the lifting plate 502, the lifting plate 502 is pressed, so that the spring between the lifting plate 502 and the finished product box 15 is compressed, and the part slowly falls under the finished product box 15, and the lifting plate 502 is pressed down into the slot 503. At this time, the lifting plate 502 and the bottom surface of the finished product box 15 are in the same plane, and then the threaded rod 505 is driven to rotate, and then the thread drives the push plate 504 to move, and then the part is pushed out of the finished product box 15 from the discharge port 506. In the whole process, the part is always in a slow sliding state, thereby avoiding damage to the part caused by collision.

[0040] like Figures 1 to 3 , to solve the problem of moving the movable mold.

[0041] A threaded rod 203 is fixedly connected to the movable mold 12, and the threaded rod 203 is slidably connected to the machine base 11. A threaded disk 204 is rotatably connected to the machine base 11, and the threaded disk 204 and the threaded rod 203 are threadedly connected. A motor 205 is fixedly connected to the machine base 11, and a belt transmission is provided between the output shaft of the motor 205 and the threaded disk 204.

[0042] The driving motor 205 rotates, and then the output shaft of the motor 205 drives the threaded disk 204 to rotate through the belt and the pulley, and then the thread drives the threaded rod 203 to move, and then drives the movable mold 12 to move. The threaded rod 203 and the movable mold 12 are fixedly connected with screws, so that different movable molds 12 can be easily replaced. By changing the rotation direction of the motor 205, the rotation direction of the threaded disk 204 can be changed, and the threaded rod 203 can move the movable mold 12 left and right.

[0043] like Figures 1 to 3 , in order to solve the problem of parts detaching from the movable mold 12.

[0044] A push plate 201 is slidably connected to the movable mold 12 , a plurality of thin rods are fixedly connected to the push plate 201 , a blocking plate 202 is fixedly connected to the plurality of thin rods, a return spring is fixedly connected between the blocking plate 202 and the movable mold 12 , and a blocking rod 105 is fixedly connected to the machine base 11 .

[0045] To prevent deformation caused by excessive pressure from the chuck 407 on the part, it is necessary to assist the part to separate from the movable mold 12. After the injection molding is completed, the movable mold 12 moves to the left, and the return spring is in an extended state, so that the blocking plate 202, the thin rod and the push plate 201 synchronously follow the movable mold 12 to move left. When the blocking plate 202 contacts the blocking rod 105, as the movable mold 12 continues to move to the left, the blocking plate 202, the thin rod and the push plate 201 stop moving, and the return spring is compressed, so that a relative displacement is generated between the push plate 201 and the movable mold 12, thereby pushing the part and assisting it to separate from the movable mold 12. Afterwards, during the process of the movable mold 12 moving to the right, the compressed return spring drives the blocking plate 202, the thin rod and the push plate 201 to reset.

[0046] like Figures 1 to 3 , to solve the problem of injection molding work.

[0047] An extrusion tube 301 is fixedly connected to the fixed mold 13 , a raw material box 302 is fixedly connected to the machine base 11 , and a heating tube is fixedly connected and communicated between the raw material box 302 and the extrusion tube 301 .

[0048] Plastic particles are added to the raw material box 302. The plastic particles melt in the heating tube and flow into the extrusion tube 301. The extrusion tube 301 is connected to a spiral blade for rotation, which drives the spiral blade to rotate and then injects the molten plastic between the fixed mold 13 and the movable mold 12, thereby realizing injection molding.

[0049] like Figure 1 , in order to solve the problem of adding raw materials into the raw material box 302.

[0050] A ladder 103 is fixed to one side of the base 11 by screws. When the plastic particles in the raw material box 302 are reduced, since the raw material box 302 is relatively high, in order to facilitate workers to add raw materials thereto, a ladder 103 is provided so that workers can go up and down easily, thereby facilitating the addition of raw materials.

[0051] like Figure 1 , to increase the practicality of the equipment.

[0052] A plurality of storage cabinets 101 are provided below the machine base 11 , and an operating table 102 is provided on the machine base 11 .

[0053] Since different molds need to be replaced during the use of the injection molding machine to facilitate the processing of different parts, different raw materials need to be replaced according to the requirements of the parts. Molds and raw materials of different shapes can be placed in the multiple storage cabinets 101 below. Placing them there can avoid pollution such as dust and is convenient for subsequent removal and use.

Claims

1. An injection molding machine, characterized in that: The machine base (11) comprises a slide rail (104) fixedly connected to the machine base (11), a movable mold (12) slidably connected to the slide rail (104), a fixed mold (13) fixedly connected to the slide rail (104), a cross bar (14) fixedly connected to the machine base (11), two clamping plates (404) slidably connected to the cross bar (14), the lower end of each clamping plate (404) is rotatably connected to an adjusting rod (406), and each adjusting rod (406) is fixedly connected to a clamping head (407).

2. The injection molding machine according to claim 1, characterized in that: A plurality of rubber heads (408) are fixedly connected to each clamping head (407), and a servo motor (409) is fixedly connected between each adjusting rod (406) and the clamping plate (404).

3. The injection molding machine according to claim 2, characterized in that: The cross bar (14) is fixedly connected to a longitudinal bar (401), a slider (402) is slidably connected to the longitudinal bar (401), a movable end of a telescopic rod (403) is fixedly connected to the slider (402), a fixed end of the telescopic rod (403) is fixedly connected to the cross bar (14), one end of two connecting rods (405) is rotatably connected to the slider (402), and the other end of each connecting rod (405) is rotatably connected to a corresponding clamping plate (404).

4. The injection molding machine according to claim 1, characterized in that: A finished product box (15) is fixedly connected to the machine base (11). The finished product box (15) is located below the cross bar (14). An inclined plate (501) is rotatably connected inside the finished product box (15). A spring is fixedly connected between the inclined plate (501) and the finished product box (15).

5. The injection molding machine according to claim 4, characterized in that: A lifting plate (502) is slidably connected inside the finished product box (15), a spring is fixedly connected between the lifting plate (502) and the finished product box (15), a slot (503) having the same shape as the lifting plate (502) is provided below the finished product box (15), a push plate (504) is slidably connected inside the finished product box (15), a threaded rod (505) is rotatably connected to the finished product box (15), the threaded rod (505) and the push plate (504) are threadedly connected, and a discharge port (506) is provided on the finished product box (15).

6. The injection molding machine according to claim 1, characterized in that: A threaded rod (203) is fixedly connected to the movable mold (12), the threaded rod (203) and the machine base (11) are slidably connected, a threaded disk (204) is rotatably connected to the machine base (11), the threaded disk (204) and the threaded rod (203) are threadedly connected, a motor (205) is fixedly connected to the machine base (11), and a belt transmission is provided between the output shaft of the motor (205) and the threaded disk (204).

7. The injection molding machine according to claim 6, characterized in that: The movable mold (12) is slidably connected to a push plate (201), a plurality of thin rods are fixedly connected to the push plate (201), the plurality of thin rods are all fixedly connected to a blocking plate (202), a return spring is fixedly connected between the blocking plate (202) and the movable mold (12), and a blocking rod (105) is fixedly connected to the machine base (11).

8. The injection molding machine according to claim 1, characterized in that: An extrusion tube (301) is fixedly connected to the fixed mold (13), a raw material box (302) is fixedly connected to the machine base (11), and a heating tube is fixedly connected and communicated between the raw material box (302) and the extrusion tube (301).

9. The injection molding machine according to claim 8, characterized in that: A ladder (103) is fixedly connected to one side of the machine base (11).

10. The injection molding machine according to claim 1, characterized in that: A plurality of storage cabinets (101) are arranged below the machine base (11), and an operating table (102) is arranged on the machine base (11).

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