Waste gas collecting hood of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machine waste gas treatment, in particular to an injection molding machine waste gas collecting hood which comprises two symmetrical concentric-square-shaped frames, two symmetrical shells arranged up and down between the two concentric-square-shaped frames, a cleaning mechanism arranged in the upper shell, and semicircular holes formed in the two ends of the shells in a penetrating mode. The top end of the upper shell is fixedly connected with an exhaust pipe in a penetrating mode, and the interior of the upper shell is fixedly connected with a filter plate. According to the device, the filter plate is fixed in the upper shell, particulate matter in waste gas can be prevented from being attached to the inner wall of the exhaust pipe, the three brushes can move through rotation of the two reciprocating lead screws, and the brushes on the top face of the rotating plate can make contact with the filter plate, so that the particulate matter on the filter plate can be cleared away; particulate matters are prevented from blocking the filter plate, so that the condition that the waste gas filtering effect of the filter plate is reduced can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment for injection molding machines, in particular to a waste gas collecting hood for injection molding machines. Background Art

[0002] An injection molding machine is a machine that heats thermoplastics into molten plastics, applies high pressure to the molten plastics, and injects them into plastic molds to form them. It is widely used in the production process of plastic parts and is of great significance to industrial production. In the process of heating and melting the plastics by the injection molding machine, the moisture and harmful substances in the plastic raw materials will be discharged out of the injection molding machine, making the workshop full of plastic waste gas; in today's increasingly green environmental protection, the method of directly emitting waste gas is obviously not conducive to environmental protection and the health of workers. Therefore, injection molding machines in factories are often equipped with waste gas treatment systems.

[0003] Chinese patent publication number CN211334319U discloses an injection molding machine waste gas collection device. By rotating a bidirectional screw, a first air collecting hood and a second air collecting hood are brought closer to or farther away from each other. When the first air collecting hood and the second air collecting hood are brought closer to each other to a certain extent, the first air collecting hood and the second air collecting hood abut against each other. When abutting, a cavity is formed between the first air collecting hood and the second air collecting hood. A heating component passes through the cavity. Waste gas generated by the heating component is emitted into the cavity. The first protective cover and the second protective cover play a role in blocking the emission of waste gas, thereby improving the waste gas collection effect.

[0004] Although the above patent can block the emission of exhaust gas and improve the collection effect of exhaust gas, since the exhaust gas contains dust particles and moisture, the exhaust gas is directly transported from the conveying pipe. The particles in the exhaust gas will be adsorbed on the inner wall of the conveying pipe under the action of moisture. Since the conveying pipe is relatively long, it is very difficult to clean the dust particles on the inner wall of the cleaner. Utility Model Content

[0005] The utility model aims to provide an exhaust gas collecting hood for an injection molding machine to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An injection molding machine exhaust gas collecting hood comprises two symmetrical circular frames, two symmetrical shells are arranged above and below the two circular frames, a cleaning mechanism is arranged inside the upper shell, semicircular holes are penetrated at both ends of the shell, an exhaust pipe is penetrated and fixedly connected to the top end of the upper shell, a filter plate is fixedly connected to the inside of the upper shell, a plurality of blocks are fixedly provided on the opposite side surfaces of the upper shell at equal intervals, the cleaning mechanism comprises two symmetrical reciprocating screws rotating between the opposite side surfaces of the upper shell 2, a movable plate is screwed together between the two reciprocating screws, the top surface of the movable plate is rotatably connected to a rotating plate, and brushes are fixedly connected to the two side surfaces and the top surface of the rotating plate.

[0008] Furthermore, two symmetrical bidirectional screws are rotatably connected between the inner top surface and the inner bottom surface of the circular frame, and both ends of the outer walls of the bidirectional screws are screwed and connected with sliders fixed to the shell at corresponding positions.

[0009] Furthermore, the bottom end of the bidirectional screw rod passes through the bottom surface of the circular frame at the corresponding position and is fixedly connected to a double-groove pulley, and two adjacent double-groove pulleys are connected via a belt transmission, the bottom end of one of the bidirectional screw rods is fixedly connected to a rotating wheel, and both ends of the bottom surface of the circular frame are fixedly connected to support legs.

[0010] Furthermore, a side surface of the shell located at the top is fixedly connected to a support plate, one end of the reciprocating screw rod passes through the side surface of the shell at the corresponding position and is fixedly connected to a single-groove pulley, the two single-groove pulleys are driven by a second belt, the top surface of the support plate is fixedly connected to a motor, and the output end of the motor is fixedly connected to the reciprocating screw rod at the corresponding position.

[0011] Furthermore, notches are provided at both ends of the top surface of the movable plate, rotating blocks which rotate inside the notches at corresponding positions are fixedly connected at both ends of the bottom surface of the rotating plate, and a torsion spring is provided between the rotating block and the notches at corresponding positions.

[0012] Preferably, both ends of the top surface of the rotating plate are fixedly connected with connecting blocks.

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

[0014] 1. By fixing the filter plate in the upper shell, the particles in the exhaust gas can be prevented from adhering to the inner wall of the exhaust pipe. The three brushes can be moved by the rotation of the two reciprocating screws. Since the brushes on the top surface of the rotating plate can contact the filter plate, the particles on the filter plate can be cleaned off to prevent the particles from blocking the filter plate, thereby avoiding the situation where the filter plate's filtering effect on the exhaust gas is reduced;

[0015] 2. The rotating plate can be rotated and restored to its original state through the action of multiple blocks and two torsion springs. In the process of the rotating plate quickly returning to its original state, the rotating plate will swing back and forth due to the action of inertia, thereby flicking off the particles attached to the brush, preventing the particles on the brush from blocking the filter plate again. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection between two circular frames and two shells in the utility model;

[0018] Figure 3 It is a schematic diagram of one of the housings in the utility model;

[0019] Figure 4 It is a schematic diagram of the cleaning mechanism structure in the utility model.

[0020] In the figure: 1. circular frame; 11. bidirectional screw; 12. double-groove pulley; 13. rotating wheel; 14. supporting leg; 2. shell; 21. semicircular hole; 22. exhaust pipe; 23. filter plate; 24. stopper; 25. supporting plate; 26. slider; 3. cleaning mechanism; 31. reciprocating screw; 32. moving plate; 33. rotating plate; 34. brush; 35. single-groove pulley; 36. motor; 37. notch; 38. rotating block; 39. connecting block. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figures 1 to 4In the embodiment of the utility model, an injection molding machine exhaust gas collecting hood includes two symmetrical circular frames 1, two symmetrical shells 2 are arranged between the two circular frames 1, a cleaning mechanism 3 is arranged inside the upper shell 2, both ends of the shell 2 are penetrated with semicircular holes 21, an exhaust pipe 22 is fixedly connected to the top of the upper shell 2, a filter plate 23 is fixedly connected to the inside of the upper shell 2, and a plurality of blocks 24 are fixedly arranged on the opposite sides of the upper shell 2 at equal intervals, the cleaning mechanism 3 includes two symmetrical reciprocating screws 31 rotating between the opposite sides of the upper shell 2, a moving plate 32 is screwed and connected between the two reciprocating screws 31, a rotating plate 33 is rotatably connected to the top surface of the moving plate 32, and brushes 34 are fixedly connected to the two side surfaces and the top surface of the rotating plate 33.

[0023] Specifically, first, one end of the exhaust pipe 22 is connected to the pipe in the exhaust gas treatment system, and then the two shells 2 are put on the outside of the heating component of the injection molding machine, so that the exhaust gas generated by the heating component is dissipated between the two shells 2. Since the exhaust gas generated by the heating component has a high temperature, the exhaust gas will float into the upper shell 2. Since a filter plate 23 is fixed inside the upper shell 2, the filter plate 23 can filter the particulate matter in the exhaust gas, and can prevent the particulate matter in the exhaust gas from adhering to the inner wall of the exhaust pipe 22. The filtered exhaust gas enters the exhaust gas treatment system through the exhaust pipe 22. Due to the action of the filter plate 23, the particulate matter in the exhaust gas will adhere to the filter plate 23. Then, the movable plate 32 can be moved along the length direction of the reciprocating screw rods 31 by rotating the two reciprocating screw rods 31, so that the three brushes 34 can be moved. The brush 34 located on the top surface of the rotating plate 33 can The particles on the filter plate 23 are cleaned off and fall into the interior of the shell 2 below, but some of the particles will adhere to the brush 34 above. Since the rotating plate 33 can rotate when it contacts the block 24 during movement, the rotating plate 33 will quickly return to its original state when the rotating plate 33 is disengaged from the block 24. During the process of the rotating plate 33 quickly returning to its original state, the rotating plate 33 will swing back and forth due to the action of inertia, thereby bouncing off the particles attached to the brush 34 and dropping them into the interior of the shell 2 below. Then, the staff can separate the two shells 2 when the injection molding machine is stopped, and clean up the particles that fall into the lower shell 2, so as to prevent the particles in the exhaust gas from adhering to the inner wall of the exhaust pipe 22 and preventing the particles from blocking the filter plate 23, thereby avoiding the situation where the filtering effect of the filter plate 23 on the exhaust gas is reduced.

[0024] Embodiment 1

[0025] like Figure 2As shown, in this embodiment, two symmetrical bidirectional screws 11 are rotatably connected between the inner top surface and the inner bottom surface of the circular frame 1, and both ends of the outer wall of the bidirectional screw 11 are screwed together with sliders 26 fixed to the shell 2 at the corresponding position, and the bottom end of the bidirectional screw 11 passes through the bottom surface of the circular frame 1 at the corresponding position and is fixedly connected to a double-groove pulley 12, and two adjacent double-groove pulleys 12 are connected by a belt transmission, and the bottom end of one of the bidirectional screws 11 is fixedly connected to a rotating wheel 13, and both ends of the bottom surface of the circular frame 1 are fixedly connected to support legs 14.

[0026] In this embodiment, the four bidirectional screws 11 can be rotated simultaneously by the rotation of the rotating wheel 13. The rotating bidirectional screws 11 can make the two sliders 26 at the corresponding positions move in opposite directions, so that the two shells 2 can be pressed together or separated.

[0027] Embodiment 2

[0028] like Figure 3 and Figure 4 As shown, in the present embodiment, a side surface of the shell 2 located at the top is fixedly connected to a support plate 25, one end of the reciprocating screw rod 31 passes through the side surface of the shell 2 at the corresponding position and is fixedly connected to a single-groove pulley 35, and the two single-groove pulleys 35 are driven by a second belt, and a motor 36 is fixedly connected to the top surface of the support plate 25, and the output end of the motor 36 is fixedly connected to the reciprocating screw rod 31 at the corresponding position, and notches 37 are provided at both ends of the top surface of the movable plate 32, and both ends of the bottom surface of the rotating plate 33 are fixedly connected to a rotating block 38 that rotates inside the notch 37 at the corresponding position, a torsion spring is arranged between the rotating block 38 and the notch 37 at the corresponding position, and both ends of the top surface of the rotating plate 33 are fixedly connected to a connecting block 39.

[0029] In this embodiment, the two reciprocating screws 31 can be rotated by the drive of the motor 36, so that the moving plate 32 can be moved along the length direction of the reciprocating screw 31, so that the three brushes 34 can be moved, and the brush 34 located on the top surface of the rotating plate 33 can clean the particles on the filter plate 23 and fall into the interior of the shell 2 below, but some of the particles will adhere to the brush 34 above. Since the rotating plate 33 can be rotated when it contacts the stopper 24 during the movement, the rotating plate 33 is disengaged from the stopper 24, and the rotating plate 33 is in the corresponding position. The rotating plate 33 quickly returns to its original shape under the action of the torsion spring. During the process of the rotating plate 33 quickly returning to its original shape, the rotating plate 33 will swing back and forth due to the action of inertia, so that the particles attached to the brush 34 can be bounced off and fall into the interior of the shell 2 below. Then the staff can separate the two shells 2 when the injection molding machine is stopped, and clean up the particles that fall into the lower shell 2, so as to prevent the particles in the exhaust gas from adhering to the inner wall of the exhaust pipe 22 and prevent the particles from blocking the filter plate 23, thereby avoiding the situation where the filtering effect of the filter plate 23 on the exhaust gas is reduced.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An injection molding machine exhaust gas collecting hood, characterized in that: The invention comprises two symmetrical circular frames (1), two symmetrical shells (2) are arranged between the two circular frames (1), a cleaning mechanism (3) is arranged inside the upper shell (2), semicircular holes (21) are penetrated at both ends of the shell (2), an exhaust pipe (22) is penetrated and fixedly connected at the top of the upper shell (2), a filter plate (23) is fixedly connected inside the upper shell (2), a plurality of stoppers (24) are fixedly fixed at equal intervals on two opposite side surfaces inside the upper shell (2), the cleaning mechanism (3) comprises two symmetrical reciprocating screws (31) which rotate between two opposite side surfaces inside the upper shell (2), a moving plate (32) is screwedly connected between the two reciprocating screws (31), a rotating plate (33) is rotatably connected to the top surface of the moving plate (32), and brushes (34) are fixedly connected to both side surfaces and the top surface of the rotating plate (33).

2. The waste gas collecting hood for an injection molding machine according to claim 1, characterized in that: Two symmetrical bidirectional screws (11) are rotatably connected between the inner top surface and the inner bottom surface of the circular frame (1), and both ends of the outer wall of the bidirectional screw (11) are screwed and connected with sliders (26) fixed to the housing (2) at corresponding positions.

3. The waste gas collecting hood for an injection molding machine according to claim 2, characterized in that: The bottom end of the bidirectional screw (11) passes through the bottom surface of the circular frame (1) at the corresponding position and is fixedly connected to a double-groove pulley (12). Two adjacent double-groove pulleys (12) are connected via a belt transmission. The bottom end of one of the bidirectional screws (11) is fixedly connected to a rotating wheel (13). Both ends of the bottom surface of the circular frame (1) are fixedly connected to support legs (14).

4. The waste gas collecting hood for an injection molding machine according to claim 1, characterized in that: A support plate (25) is fixedly connected to one side of the housing (2) located at the top, one end of the reciprocating screw rod (31) passes through the side of the housing (2) at a corresponding position and is fixedly connected to a single-groove pulley (35), a second belt transmission is used between the two single-groove pulleys (35), a motor (36) is fixedly connected to the top surface of the support plate (25), and an output end of the motor (36) is fixedly connected to the reciprocating screw rod (31) at a corresponding position.

5. The waste gas collecting hood for an injection molding machine according to claim 4, characterized in that: Notches (37) are provided at both ends of the top surface of the movable plate (32), and rotating blocks (38) that rotate inside the notches (37) at corresponding positions are fixedly connected at both ends of the bottom surface of the rotating plate (33), and a torsion spring is provided between the rotating block (38) and the notches (37) at corresponding positions.

6. The waste gas collecting hood for an injection molding machine according to claim 5, characterized in that: Both ends of the top surface of the rotating plate (33) are fixedly connected with connecting blocks (39).

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