Head mold pneumatic control air tightness detection device

Abstract

The utility model relates to the field of air tightness detection, in particular to a pneumatic control air tightness detection device for a head mold. The utility model provides a pneumatic control air tightness detection device for a head mold, which comprises a detection box, a first connecting pipe, a first air pump, an air inlet pipe and a fixing assembly, the lower side in the detection box is connected with the first connecting pipe, the lower side of the detection box is provided with the first air pump, and the first connecting pipe penetrates through the detection box and is fixedly connected with the first air pump; the lower side of the first air pump is connected with an air inlet pipe, and the lower side in the detection box is provided with a fixing assembly. Through the design of the air bag, the expansion degree can be automatically adjusted according to the size of the head mold, so that the head molds with different sizes are effectively fixed; the air in the air storage tank is injected into the air bag through the second connecting pipe by the second air pump, so that the air bag is gradually expanded and firmly fixes the head mold, the expansion degree of the air bag can be flexibly adjusted according to the actual size of the head mold, and stable fixation is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection field especially relates to head mould pneumatic control airtightness detection device. BACKGROUND

[0002] The head mould pneumatic control airtightness detection device is a device for testing the airtightness of products or components. This device tests whether the measured object can effectively prevent gas leakage or the intrusion of external impurities by simulating the pressure change under actual use conditions.

[0003] The conventional head mould pneumatic control airtightness detection device usually realizes testing by directly wearing the gas mask on the head mould when detecting the airtightness of the gas mask or other protective equipment. However, the conventional device mainly relies on fixed clamps or supports to install the head mould. This way is difficult to cope with head moulds of different sizes and shapes, lacks flexibility, and increases the operation complexity and time cost every time the head mould of different specifications is replaced. In addition, due to the lack of adjustable fixing mechanism, the conventional device cannot automatically adjust the fixing method according to the specific size of the head mould, resulting in low efficiency when processing head moulds of different specifications, increasing the operation complexity and time cost.

[0004] In view of the above problems, it is necessary to design a head mould pneumatic control airtightness detection device that can fix head moulds of different sizes. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcoming of lacking adjustable fixing mechanism, the utility model provides a head mould pneumatic control airtightness detection device.

[0006] The technical scheme of the utility model is: a head mould pneumatic control airtightness detection device, comprising a detection box, a first connecting pipe, a first air pump, an air inlet pipe and a fixing assembly, the first connecting pipe is connected to the lower side of the detection box, the first air pump is installed on the lower side of the detection box, the first connecting pipe is fixedly connected with the first air pump penetrating through the detection box, the air inlet pipe is connected to the lower side of the first air pump, and the fixing assembly is arranged on the lower side of the detection box.

[0007] Further, the fixing assembly comprises a fixing seat, an air bag, a second connecting pipe, an air storage tank and a second air pump, the fixing seat is connected to the lower side of the detection box, the air bag is arranged in the fixing seat, the air storage tanks are symmetrically connected to the left and right sides of the lower side of the detection box, the second air pumps are installed on the side of the two air storage tanks facing each other, the second connecting pipes are connected to the side of the two second air pumps facing each other, and the air bags are fixedly connected with the second connecting pipes penetrating through the fixing seat.

[0008] Further, the fan, the heating pipe, the guide frame, the baffle, the sliding frame, the mounting frame, the guide rod, the screw rod and the motor are further included, the fan is symmetrically installed on the left and right of the detection box, the heating pipe is installed on the left side of the detection box, the heating pipe is located outside the fan on the left side, the guide frames are symmetrically connected outside the detection box, the motor is installed on the right side at the back of the detection box, the mounting frame is connected at the back of the detection box, the guide rod is arranged on the left side of the mounting frame, the screw rod is threadedly connected on the right side of the mounting frame, the output shaft of the motor is fixedly connected with the lower end of the screw rod, the sliding frame is slidably connected on the screw rod, the sliding frame is slidably connected with the guide rod, the baffles are symmetrically connected on the left and right of the sliding frame, and the two baffles are in contact with the corresponding guide frames.

[0009] Further, the protective shell is further included, and the motor is wrapped with the protective shell.

[0010] Further, the air bag is made of rubber material.

[0011] Further, a plurality of fixing holes are formed in the detection box.

[0012] The head mold can be automatically adjusted according to the actual size of the head mold, and the head mold can be effectively fixed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0014] Figure 2 It is a three-dimensional structure schematic view of the first connecting pipe, the first air pump and the air inlet pipe and other parts of the utility model.

[0015] Figure 3 It is a three-dimensional structure schematic view of the fixed seat, the air bag and the second connecting pipe and other parts of the utility model.

[0016] Figure 4 It is a sectional view of the baffle.

[0017] Figure 5 It is a sectional view of the protective shell.

[0018] In the drawing mark, 1 is detection box, 2 is first connecting pipe, 3 is first air pump, 4 is air inlet pipe, 5 is fixed seat, 6 is air bag, 7 is second connecting pipe, 8 is gas holder, 9 is second air pump, 10 is fan, 11 is heating pipe, 12 is guide frame, 13 is baffle, 14 is sliding frame, 15 is mounting frame, 16 is guide rod, 17 is screw rod, 18 is motor, 181 is protective shell. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] Example: A pneumatic control airtightness detection device for a head mold, such as... Figures 1-5 As shown, the device includes a detection box 1, a first connecting pipe 2, a first air pump 3, an air inlet pipe 4, a fan 10, a heating pipe 11, a guide frame 12, a baffle 13, a sliding frame 14, a mounting frame 15, a guide rod 16, a screw 17, a motor 18, a protective shell 181, and fixing components. The detection box 1 has multiple fixing holes. The first connecting pipe 2 is connected to the lower side of the detection box 1. The first air pump 3 is installed on the lower side of the detection box 1. The first connecting pipe 2 passes through the detection box 1 and is fixedly connected to the first air pump 3. The air inlet pipe 4 is connected to the lower side of the first air pump 3. Fans 10 are symmetrically installed on the left and right sides of the detection box 1. The fans 10 are used for control. The airflow inside the testing chamber 1 is circulated. A heating tube 11 is installed on the left side of the testing chamber 1, located outside the fan 10 on the left side. The heating tube 11 is used to heat the air drawn in by the fan 10. Guide frames 12 are symmetrically connected to the left and right sides of the outer side of the testing chamber 1. The guide frames 12 are used to guide the movement path of the baffle 13. A motor 18 is installed on the rear right side of the testing chamber 1. The motor 18 is covered by a protective shell 181, which protects the motor 18. A mounting bracket 15 is connected to the rear side of the testing chamber 1. A guide rod 16 is provided on the left side of the mounting bracket 15. The guide rod 16 is used to guide the linear movement of the sliding frame 14. To ensure smooth sliding of the sliding frame 14, a screw rod 17 is threadedly connected to the right side of the mounting bracket 15. The output shaft of the motor 18 is fixedly connected to the lower end of the screw rod 17. The sliding frame 14 is slidably connected to the screw rod 17. The sliding frame 14 is slidably connected to the guide rod 16. Baffles 13 are symmetrically connected to the left and right sides of the sliding frame 14. The two baffles 13 contact and cooperate with the corresponding guide frames 12. The baffles 13 are used to close or open the inlet of the fan 10. A fixing assembly is provided on the lower side of the test box 1. The fixing assembly includes a fixing seat 5, an air bag 6, a second connecting pipe 7, an air tank 8, and a second air pump 9. The fixing seat 5 is connected to the lower side of the test box 1. The fixed base 5 is equipped with an airbag 6, which is made of rubber. The airbag 6 is used to expand according to the size of the head mold and fix the head mold to ensure that the head mold remains stable during the test. The lower side of the test box 1 is symmetrically connected with air tanks 8, which are used to store gas. A second air pump 9 is installed on the opposite side of the two air tanks 8. The second air pump 9 is used to extract the gas in the air tanks 8. A second connecting pipe 7 is connected to the opposite side of the two second air pumps 9. The two second connecting pipes 7 pass through the fixed base 5 and are fixedly connected to the airbag 6. The second connecting pipe 7 is used to transport the gas in the air tank 8 to the airbag 6.

[0021] When it is necessary to use the device to detect the airtightness of the head mold, first of all, the worker opens the box door of the detection box 1, then places the head mold to be detected inside the air bag 6, and connects it with the first connecting pipe 2, ensures that the gas can smoothly enter the inner cavity of the head mold, starts the two second air pumps 9, the two second air pumps 9 will extract the gas in the corresponding gas storage tank 8, and deliver it to the air bag 6 through the two second connecting pipes 7, with the continuous injection of gas, the air bag 6 gradually expands, in the process of expansion of the air bag 6, it can be adjusted according to the size of the head mold to adapt to head molds of different sizes, until the air bag 6 completely fixes the head mold, turn off the two second air pumps 9, wear the gas mask correctly on the head mold, and close the box door of the detection box 1, then start the detection box 1 and the first air pump 3, so that the detection box 1 and the first air pump 3 are in working condition, the first air pump 3 inhales external gas, and sends the gas into the inner cavity of the head mold through the air inlet pipe 4 and the first connecting pipe 2, until the preset pressure value is reached, within the set time, the detection box 1 monitors the pressure change in the head mold, if the pressure does not decrease obviously, it indicates that the head mold has good airtightness; on the contrary, if the pressure decreases significantly, it indicates that the head mold has a leakage point, when it is necessary to simulate a high temperature environment, start the left fan 10 and the heating pipe 11, the left fan 10 inhales external air, the air is heated into hot air after passing through the heating pipe 11 and is sent into the detection box 1, repeat the above heating process, until the temperature in the detection box 1 reaches the target value, turn off the left fan 10 and the heating pipe 11, at the same time, start the motor 18, the output shaft of the motor 18 drives the screw 17 to rotate, the screw 17 drives the sliding frame 14 to move downward along the guide rod 16, the sliding frame 14 drives the two baffles 13 to move downward, until the two baffles 13 contact the outer side of the corresponding fan 10, thereby closing the inlet of the two fans 10, then turn off the motor 18, at this time, the detection box 1 forms a relatively closed high temperature environment, continue to monitor the pressure change in the head mold in the high temperature environment, if the pressure remains stable, it indicates that the head mold still has good airtightness under high temperature conditions.Conversely, if the pressure drops, it indicates that the head mold is affected by high temperature and appears leakage, when the head mold test is completed, the detection box 1 and the first air pump 3 are closed in turn, the motor 18 is started, the motor 18 is reversely operated, the output shaft of the motor 18 drives the screw rod 17 to reversely rotate, and then drives the sliding frame 14 and the two baffles 13 to move upwards along the guide rod 16, the two baffles 13 move upwards along the corresponding guide frame 12, until the two baffles 13 are separated from the outside of the corresponding fan 10, the motor 18 is closed, then the two fans 10 are started, the left fan 10 inhales external cold air and sends it into the detection box 1, the right fan 10 exhausts hot air, and the circulation cooling is continued until the temperature in the detection box 1 decreases to the preset value, the two fans 10 are closed, the box door of the detection box 1 is opened again, and the two second air pumps 9 are started, the two second air pumps 9 draw the gas in the air bag 6 out and draw the gas back into the corresponding gas storage tank 8 through the two second connecting pipes 7, until the air bag 6 returns to the original state, the two second air pumps 9 are closed, at this time, the staff can easily take out the head mold which has been detected.

[0022] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A head mold pneumatic control airtightness detection device, characterized in that: It includes a test box (1), a first connecting pipe (2), a first air pump (3), an air inlet pipe (4), and a fixing component. The first connecting pipe (2) is fixedly connected to the lower side of the test box (1). The first air pump (3) is installed on the lower side of the test box (1). The first connecting pipe (2) passes through the test box (1) and is fixedly connected to the first air pump (3). The air inlet pipe (4) is connected to the lower side of the first air pump (3). The fixing component is provided on the lower side of the test box (1).

2. The head mold pneumatic control airtightness detection device as described in claim 1, characterized in that: The fixing assembly includes a fixing seat (5), an airbag (6), a second connecting pipe (7), an air tank (8), and a second air pump (9). The fixing seat (5) is fixedly connected to the lower side of the test box (1). An airbag (6) is installed inside the fixing seat (5). An air tank (8) is symmetrically connected to the left and right sides of the lower side of the test box (1). A second air pump (9) is installed on the opposite side of the two air tanks (8). A second connecting pipe (7) is connected to the opposite side of the two second air pumps (9). The two second connecting pipes (7) pass through the fixing seat (5) and are fixedly connected to the airbag (6).

3. The head mold pneumatic control airtightness detection device as described in claim 2, characterized in that: It also includes a fan (10), a heating element (11), a guide frame (12), a baffle (13), a sliding frame (14), a mounting frame (15), a guide rod (16), a screw (17), and a motor (18). The fan (10) is symmetrically installed on the left and right sides of the test box (1). A heating element (11) is installed on the left side of the test box (1), located outside the fan (10) on the left. Guide frames (12) are symmetrically fixed to the left and right sides of the outer side of the test box (1). A motor is installed on the rear right side of the test box (1). 18) A mounting bracket (15) is installed on the rear side of the test box (1). A guide rod (16) is connected to the left side of the mounting bracket (15). A screw rod (17) is threadedly connected to the right side of the mounting bracket (15). The output shaft of the motor (18) is fixedly connected to the lower end of the screw rod (17). A sliding frame (14) is slidably connected to the screw rod (17). The sliding frame (14) is slidably connected to the guide rod (16). Baffles (13) are fixedly connected to the left and right sides of the sliding frame (14). The two baffles (13) are in contact with the corresponding guide frame (12).

4. The head mold pneumatic control airtightness detection device as described in claim 3, characterized in that: It also includes a protective shell (181), which covers the outside of the motor (18).

5. The head mold pneumatic control airtightness detection device as described in claim 4, characterized in that: The airbag (6) is made of rubber.

6. The head mold pneumatic control airtightness detection device as described in claim 5, characterized in that: The testing box (1) has multiple fixing holes.

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