An air suction device of a plastic suction machine

Abstract

The utility model belongs to blister packing machine field, and disclose a kind of suction device of blister packing machine, including negative pressure equipment, suction pipe, placing box, shunt pipe, pipeline opening area adjusting assembly, sub-chamber, independent maintenance box and pipeline head, and pipeline opening area adjusting assembly is made of baffle, semicircle rotating part, bevel gear set and servo motor;When working, negative pressure equipment is cooperated with shunt pipe by suction pipe, and gas in sub-chamber is evenly sucked out through through-hole plate, to avoid material rupture;Servo motor drives bevel gear set to drive semicircle rotating part to rotate, and the sector opening on baffle is shielded or exposed, and the opening area of shunt pipe is accurately adjusted, to realize differentiated suction speed, and adapt to the complex forming demand of special-shaped workpiece;Independent maintenance box is convenient for equipment maintenance, and detachable pipeline head can expand suction range;The device has uniform suction capacity and flexible adjustment function, wide application range, and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming machines, specifically to a suction device for a vacuum forming machine. Background Technology

[0002] In the vacuum forming process, the suction device is the core component of the vacuum forming machine. Its performance directly determines the forming quality of the plastic material, the workpiece qualification rate, and the applicability of the equipment. With the rapid development of the plastic processing industry, the market demand for vacuum-formed products is becoming increasingly diversified. It not only needs to meet the production of conventional flat workpieces, but also the processing needs of irregularly shaped workpieces are gradually increasing. This places higher demands on the uniform suction capacity and suction adjustment flexibility of the suction device.

[0003] For example, Chinese utility model patent CN218985719U discloses a suction device for a vacuum forming machine, including a base. A vacuum pump is fixedly connected inside the base, and a suction pipe is fixedly connected to the input end of the vacuum pump. A diverter pipe is fixedly connected to the upper side of the outer wall of the suction pipe, and the upper part of the outer wall of the diverter pipe is fixedly connected to the inner wall of a first through groove, which is located on the upper surface of the base. In this utility model, by activating the vacuum pump, the air pressure inside the placement box is reduced under the action of the suction pipe and the diverter pipe. The arrangement of the first and second through grooves allows for the even extraction of gas from the placement box. The through holes on the upper surface of the placement box allow for the even extraction of gas from the plastic, thus solving the problems of continuous suction at one location leading to cracking of the plastic material in that area, and uneven heating of the plastic if the suction speed is too fast, thereby improving the molding effect.

[0004] However, the suction speed of this device and similar traditional suction devices is evenly distributed, making it only suitable for the production of common large flat workpieces. In the processing of irregularly shaped workpieces, some areas require higher suction speeds to form complex structures such as arcs. Traditional devices cannot adjust the suction speed according to the different areas, resulting in inaccurate forming of key parts of irregularly shaped workpieces, insufficient surface flatness, and even forming failure. In addition, existing devices mostly lack flexible opening area adjustment structures, making it difficult to adjust the suction speed according to the shape and material properties of the workpiece. This limits their applicability and fails to meet diverse production needs, hindering the expansion of the application of vacuum forming machines in the field of irregularly shaped workpiece processing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a suction device for a vacuum forming machine, thereby solving the problems mentioned in the background art, such as the inability of existing devices to adjust suction power differently for different areas.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a suction device for a vacuum forming machine, comprising a negative pressure device, an air outlet pipe on one side of the negative pressure device, and a suction pipe on the other side of the negative pressure device, and further comprising: Placement box, which is located on the outside of the suction tube; The system has multiple shunt tubes, which are positioned above the intake tube and connected to it. Multiple sets of pipe opening area adjustment components are installed on the diversion pipe.

[0007] Preferably, the placement box is provided with multiple component chambers above it, each component chamber has a perforated plate at its top, the end of the diversion pipe extends into the component chamber, and each component chamber has one and only one diversion pipe.

[0008] Preferably, the negative pressure equipment is provided with an independent maintenance box on the outside, and the independent maintenance box is provided with a hinged maintenance cover.

[0009] Preferably, the end of the suction pipe facing away from the negative pressure device is provided with a detachable pipe end cap.

[0010] Preferably, the pipe opening area adjustment component includes a baffle and a semi-circular rotating component. The baffle is fixedly installed inside the diversion pipe, and a fan-shaped opening is provided on the baffle. A rotatable semi-circular rotating component is provided on the inner side of the baffle.

[0011] Preferably, the centers of the baffle, the fan-shaped opening, and the semi-circular rotating component coincide, and the angle of the fan-shaped opening is less than 180 degrees.

[0012] Preferably, the baffle has a rotating shaft at its center, and the semi-circular rotating component is sleeved on the rotating shaft.

[0013] Preferably, a first bevel gear is coaxially connected to the side of the semicircular rotating component away from the baffle, a second bevel gear is provided on one side of the first bevel gear, and the first bevel gear and the second bevel gear are meshed together. A servo motor is fixedly provided on the outside of the shunt pipe, and the output end of the servo motor is coaxially fixedly connected to the second bevel gear.

[0014] Compared with the prior art, the present invention provides a suction device for a vacuum forming machine, which has the following beneficial effects: The suction device of this vacuum forming machine is equipped with a negative pressure device, suction pipe, placement box, diversion pipe, pipe opening area adjustment component, chamber, and independent maintenance box. Similar to existing structures, it can evenly suck out gas, avoiding excessive suction at a certain location that could cause material breakage. At the same time, it can change the opening area of ​​the diversion pipe to control the suction speed, which can meet the needs of manufacturing irregularly shaped workpieces that require different suction speeds in different areas. It has a wide range of applications and is highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the diversion pipe and placement box structure of this utility model; Figure 4 This is a cross-sectional schematic diagram of the diversion tube of this utility model; Figure 5 This is a cross-sectional schematic diagram of the diversion pipe of this utility model.

[0016] In the diagram: 1. Negative pressure device; 2. Suction pipe; 3. Placement box; 4. Diverter pipe; 5. Pipe opening area adjustment component; 6. Divider chamber; 7. Through-hole plate; 8. Independent maintenance box; 9. Maintenance cover plate; 10. Pipe end cap; 11. Baffle; 12. Fan-shaped opening; 13. Semi-circular rotating component; 14. Rotating shaft; 15. First bevel gear; 16. Second bevel gear; 17. Servo motor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 This utility model provides a technical solution: A suction device for a vacuum forming machine includes a negative pressure device 1, an air outlet pipe on one side of the negative pressure device 1, and a suction pipe 2 on the other side of the negative pressure device 1. It also includes: Placement box 3 is located on the outside of suction pipe 2; A multi-component flow tube 4 is provided above the intake tube 2 and is connected to the intake tube 2. Multiple sets of pipe opening area adjustment components 5 are installed on the diversion pipe 4.

[0019] Furthermore, multiple component chambers 6 are provided above the placement box 3, and a through-hole plate 7 is provided on the top of the component chamber 6. The end of the diversion pipe 4 extends into the component chamber 6, and there is one and only one diversion pipe 4 in each component chamber 6.

[0020] Furthermore, an independent maintenance box 8 is provided on the outside of the negative pressure equipment 1, and a hinged maintenance cover 9 is provided on the independent maintenance box 8. The maintenance cover 9 can be rotated and opened to facilitate the maintenance of the negative pressure equipment 1.

[0021] Furthermore, a detachable pipe end cap 10 is provided at the end of the suction pipe 2 facing away from the negative pressure device 1. The pipe end cap 10 can be disassembled and connected to pipes to add more branch pipes 4.

[0022] Furthermore, the pipe opening area adjustment component 5 includes a baffle 11 and a semi-circular rotating component 13. The baffle 11 is fixedly installed inside the diversion pipe 4, and a fan-shaped opening 12 is provided on the baffle 11. A rotatable semi-circular rotating component 13 is provided on the inner side of the baffle 11. The rotation of the semi-circular rotating component 13 can block or expose the fan-shaped opening 12. By controlling the posture of the semi-circular rotating component 13 after rotation, the pipe opening area can be controlled to achieve different air intake speeds, making it widely applicable.

[0023] Furthermore, the centers of the baffle 11, the fan-shaped opening 12, and the semi-circular rotating component 13 coincide, and the angle of the fan-shaped opening 12 is less than 180 degrees.

[0024] Furthermore, a rotating shaft 14 is provided at the center of the baffle 11, and a semi-circular rotating component 13 is sleeved on the rotating shaft 14. The rotating shaft 14 coincides with the center of the baffle 11, the fan-shaped opening 12 and the semi-circular rotating component 13, and the semi-circular rotating component 13 can rotate around the rotating shaft 14.

[0025] Furthermore, a first bevel gear 15 is coaxially connected to the side of the semicircular rotating component 13 facing away from the baffle 11. A second bevel gear 16 is provided on one side of the first bevel gear 15, and the first bevel gear 15 and the second bevel gear 16 are meshed together. A servo motor 17 is fixedly installed on the outside of the shunt pipe 4, and the output end of the servo motor 17 is coaxially fixedly connected to the second bevel gear 16. The servo motor 17 is used to drive the second bevel gear 16 to rotate. The second bevel gear 16 and the first bevel gear 15 form a bevel gear set, which can not only transmit rotation but also change the direction of the power source, facilitating the installation of the servo motor 17. It is recommended to install a housing on the outside of the servo motor 17. The rotation control of the servo motor 17 adopts existing technology, and its controller is provided by the supplier as a motor accessory.

[0026] Structural Description: Negative pressure device 1: The suction power source of the device, connected to the air outlet pipe on one side and the air intake pipe 2 on the other side, can form a continuous negative pressure environment to provide power for the suction cycle; Suction pipe 2: connects negative pressure device 1 and multi-component flow pipe 4 to transmit negative pressure suction. The end facing away from negative pressure device 1 is provided with pipe end cap 10, and the outer side is provided with placement box 3. Placement box 3: Located outside the suction pipe 2, it supports the multi-component chamber 6 above, providing installation support for the suction pipe 2 and the diversion pipe 4, while forming a relatively closed airflow channel; Diverter tube 4: Located above and connected to the intake tube 2, with its end extending into the chamber 6 (each group corresponds to a chamber 6), a servo motor 17 fixed on the outside, and a pipe opening area adjustment component 5 provided on the tube; Pipe opening area adjustment component 5: Installed on the diversion pipe 4, it consists of baffle 11, semi-circular rotating part 13, etc. It controls the air intake speed by adjusting the opening area of ​​the diversion pipe 4 to adapt to different molding requirements. Dividing chamber 6: Located above the placement box 3, with a perforated plate 7 installed on the top, and a set of diversion pipes 4 inside to achieve uniform distribution of suction force; Through-hole plate 7: Fixed to the top of the compartment 6, it provides a channel for gas to enter the compartment 6, helps the gas to be drawn out evenly, and avoids material breakage; Independent maintenance box 8: It is wrapped around the outside of the negative pressure equipment 1 to protect the negative pressure equipment 1. The maintenance cover 9 is hinged on the box body. Inspection cover 9: It is installed on the independent inspection box 8 by means of hinge, and can be rotated and opened and closed, providing a convenient passage for the maintenance of negative pressure equipment 1; Pipe end cap 10: It can be detachably installed at the end of the suction pipe 2 away from the negative pressure device 1. After disassembly, it can be connected to an extension pipe to add more branch pipes 4. Baffle 11: It is fixedly installed inside the diversion pipe 4, with a rotating shaft 14 at the center and a fan-shaped opening 12 on the plate to provide an installation base for the semi-circular rotating part 13; Fan-shaped opening 12: It is opened on the baffle 11, with an angle of less than 180 degrees, and coincides with the center of the baffle 11 and the semi-circular rotating part 13. It is the core channel for gas flow. Semicircular rotating component 13: It is sleeved on the rotating shaft 14 and can rotate around the shaft. It is connected to the first bevel gear 15 on the side away from the baffle 11. The ventilation area can be adjusted by blocking or exposing the fan-shaped opening 12. Rotating shaft 14: Installed at the center of baffle 11, coinciding with the center of baffle 11, fan-shaped opening 12, and semi-circular rotating component 13, providing rotational support for semi-circular rotating component 13; First bevel gear 15: Coaxially fixed to the side of the semi-circular rotating part 13 away from the baffle 11, meshing with the second bevel gear 16 to transmit power to the servo motor 17. Second bevel gear 16: meshes with first bevel gear 15, is coaxially fixed to the output end of servo motor 17, changes the power transmission direction and drives first bevel gear 15 to rotate; Servo motor 17: Fixed to the outside of the shunt pipe 4, the output end is connected to the second bevel gear 16, providing power for adjusting the pipe opening area. It is recommended to install a cover for protection on the outside.

[0027] Working Principle: When the suction device of this vacuum forming machine is working, the negative pressure device 1 is first activated, which creates a continuous negative pressure environment through the suction pipe 2. External air enters the device through the through-hole plate 7 at the top of the chamber 6 and is finally discharged through the exhaust pipe, completing the suction cycle. In the specific process, the suction force generated by the negative pressure device 1 is transmitted to the multi-group diversion pipes 4 through the suction pipe 2. Since each chamber 6 is equipped with a corresponding diversion pipe 4, and the end of the diversion pipe 4 extends directly into the interior of the chamber 6, the suction force can be evenly distributed to each chamber 6, avoiding excessive suction in a single area that could cause the plastic material to crack.

[0028] The pipe opening area adjustment component 5 adjusts the effective ventilation area of ​​the diversion pipe 4 through the cooperation of the baffle 11, the fan-shaped opening 12, and the semi-circular rotating component 13: the baffle 11 is fixed inside the diversion pipe 4, and the fan-shaped opening 12 (angle less than 180 degrees) on it provides a channel for gas flow, while the semi-circular rotating component 13, which is sleeved on the rotating shaft 14, can rotate around the shaft. When the semi-circular rotating component 13 rotates, its arc surface will partially or completely block the fan-shaped opening 12. By changing the size of the overlapping area of ​​the two, the opening area of ​​the diversion pipe 4 can be precisely controlled.

[0029] The servo motor 17 is fixed to the outside of the diverter pipe 4, and its output end is coaxially connected to the second bevel gear 16. The second bevel gear 16 meshes with the first bevel gear 15 on the side of the semi-circular rotating part 13 facing away from the baffle 11. When the servo motor 17 is started, the power is transmitted to the first bevel gear 15 through the second bevel gear 16. Through the direction conversion of the bevel gear set, the semi-circular rotating part 13 is driven to rotate around the rotating shaft 14 (the rotating shaft 14 coincides with the center of the baffle 11, the fan-shaped opening 12, and the semi-circular rotating part 13 to ensure adjustment accuracy). The operator can adjust the opening area adjustment components 5 of each group of pipes individually through the controller of the servo motor 17 according to the forming requirements of different areas of the irregular workpiece, so that the corresponding chambers 6 produce differentiated suction speeds. For example, the opening area can be increased in areas where an arc structure needs to be formed to increase the suction force and meet the processing requirements of complex-shaped workpieces.

[0030] The placement box 3 provides installation support for the suction pipe 2 and the diversion pipe 4, while forming a relatively closed airflow channel; the independent maintenance box 8 protects the negative pressure equipment 1, and its hinged maintenance cover 9 can be easily opened and closed, facilitating daily maintenance and troubleshooting; the detachable pipe end cap 10 of the suction pipe 2 away from the negative pressure equipment 1 allows users to disassemble and connect extension pipes according to production needs, adding more diversion pipes 4 and supporting structures, flexibly expanding the suction range of the device. Through the synergistic effect of the above components, the device can achieve uniform gas extraction and precise suction adjustment for the complex needs of irregularly shaped workpieces, greatly improving the adaptability and reliability of vacuum forming.

[0031] 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. A suction device for a vacuum forming machine, comprising a negative pressure device (1), an air outlet pipe provided on one side of the negative pressure device (1), and a suction pipe (2) provided on the other side of the negative pressure device (1), characterized in that, Also includes: Placement box (3) is located outside the suction pipe (2); A multi-component flow tube (4) is provided above the suction tube (2) and is connected to the suction tube (2); Multiple sets of pipe opening area adjustment components (5) are installed on the diversion pipe (4).

2. The suction device for a vacuum forming machine according to claim 1, characterized in that, The placement box (3) is provided with multiple component chambers (6) above it. A through-hole plate (7) is provided on the top of the component chamber (6). The end of the diversion pipe (4) extends into the component chamber (6), and there is one and only one diversion pipe (4) in each component chamber (6).

3. The suction device for a vacuum forming machine according to claim 1, characterized in that, The negative pressure device (1) is provided with an independent maintenance box (8) on the outside, and the independent maintenance box (8) is provided with a hinged maintenance cover (9).

4. The suction device for a vacuum forming machine according to claim 1, characterized in that, The suction pipe (2) is provided with a detachable pipe end cap (10) at the end away from the negative pressure device (1).

5. The suction device for a vacuum forming machine according to claim 2, characterized in that, The pipe opening area adjustment component (5) includes a baffle (11) and a semi-circular rotating component (13). The baffle (11) is fixedly installed inside the diversion pipe (4). A fan-shaped opening (12) is provided on the baffle (11). A rotatable semi-circular rotating component (13) is provided on the inner side of the baffle (11).

6. The suction device for a vacuum forming machine according to claim 5, characterized in that, The centers of the baffle (11), the fan-shaped opening (12), and the semi-circular rotating component (13) coincide, and the angle of the fan-shaped opening (12) is less than 180 degrees.

7. The suction device for a vacuum forming machine according to claim 6, characterized in that, The baffle (11) has a rotating shaft (14) at its center, and the semi-circular rotating part (13) is sleeved on the rotating shaft (14).

8. The suction device for a vacuum forming machine according to claim 7, characterized in that, The semi-circular rotating part (13) is coaxially connected to the side away from the baffle (11) with a first bevel gear (15), and a second bevel gear (16) is provided on one side of the first bevel gear (15). The first bevel gear (15) and the second bevel gear (16) are meshed and connected. A servo motor (17) is fixedly provided on the outside of the diverter (4), and the output end of the servo motor (17) is coaxially fixedly connected to the second bevel gear (16).

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