Breathing mask production line conveying equipment and method

Abstract

The invention belongs to the technical field of breathing mask production and conveying, and particularly relates to breathing mask production line conveying equipment and method.The breathing mask production line conveying equipment comprises a plurality of breathing masks and conveying equipment, and the conveying equipment comprises a conveying frame, a conveying belt, two roll shafts, a supporting plate, a sterilization spray pipe, a conveying cavity and a motor; the two roll shafts are installed in the conveying frame through bearings respectively, the two roll shafts are sleeved with the conveying belt, the supporting plate is fixedly installed above the conveying frame, the sterilization spray pipe is fixedly installed below the supporting plate and located above the conveying belt, and the sterilization spray pipe is connected with an external liquid pump pipeline. And the external liquid pump is connected with an external disinfectant pipeline, and the conveying cavity is fixedly installed on one side of the conveying frame. And the existing conveying equipment is not combined with sterilization equipment or the sterilization effect is poor due to hydraulic pressure.

Description

Technical Field

[0001] The present invention belongs to the technical field of production and transportation of breathing masks, and particularly relates to a conveying device and method for a breathing mask production line. Background Art

[0002] A breathing mask usually consists of a headband, a forehead cushion, a mask frame, an interface cover, an elastic band, and a silicone sealing cover, and directly contacts the patient and ventilates through the patient's mouth and nasal cavity. Therefore, special attention needs to be paid to sterilization during the production of breathing masks; After the production of breathing masks is completed, they are packaged. The breathing masks are all transported through a conveying device and then packaged by workers. However, additional bacteria will be generated when the breathing masks come into contact with air during transportation. Therefore, a sterilization process needs to be set on the conveying device. Since the disinfectant is sprayed out by a hydraulic pump, and at the same time the hydraulic pump is driven by electricity, when the voltage is unstable, the hydraulic pressure during the operation of the hydraulic pump is also unstable, resulting in the breathing masks not being fully sterilized. This phenomenon has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of the present invention is to provide a conveying device and method for a breathing mask production line to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A conveying device and method for a breathing mask production line, including a number of breathing masks and a conveying device. The conveying device includes a conveying frame, a conveyor belt, two roller shafts, a support plate, a sterilization spray pipe, a conveying cavity, and a motor; The two roller shafts are respectively installed inside the conveying frame by bearings. The conveyor belt is sleeved outside the two roller shafts. The support plate is fixedly installed above the conveying frame. The sterilization spray pipe is fixedly installed below the support plate and is located above the conveyor belt. The sterilization spray pipe is connected to an external liquid pump through a pipeline, and the external liquid pump is connected to an external disinfectant pipeline. The conveying cavity is fixedly installed on one side of the conveying frame. The motor is fixedly installed on one side of the conveying frame, and the output end is connected to one of the roller shafts; A sleeve is installed inside the middle of the inner wall of the conveying frame by bearings. The sleeve is in a penetrating shape, and a roller is fixedly sleeved on the outer side of the front end. A cylinder is fixed on the right side of the inner wall of the conveying cavity, and a push-pull rod is fixed to the output end of the cylinder. There is a hole on the front side of the conveying cavity, and the sleeve penetrates through the hole. A gear is fixed to the rear end of the sleeve. A number of tooth blocks are arranged below the push-pull rod and are meshed with the gear through the tooth blocks. A sliding hole is arranged on one side of the roller, and a top rod is slidably connected in the sliding hole. The outer end of the top rod is fixed with a top plate. The inner end of the top rod is spherical, and a limiting disk is fixed on the outer side. A compression spring is fixed between the limiting disk and the inner wall of the roller. After the sleeve rotates, the top plate contacts the inner side of the conveyor belt.

[0005] The present invention further illustrates that a stroke control module is provided inside the cylinder, and a hydraulic recognition module is provided inside the external liquid pump. The hydraulic recognition module is electrically connected to the stroke control module. The hydraulic recognition module is used to recognize the hydraulic pressure of the external liquid pump in real time, so as to judge the spraying force of the disinfectant from the sterilization nozzle. The stroke control module is used to control the reciprocating stroke size of the cylinder according to the spraying force of the disinfectant from the sterilization nozzle.

[0006] The present invention further illustrates that a buffer chamber is fixed to the left side of the inner wall of the conveying chamber. A buffer plate is slidably connected to the inner wall of the buffer chamber, and hydraulic oil is filled on the right side of the buffer plate. A buffer spring is connected between the left side of the buffer plate and the left side of the inner wall of the buffer chamber. The right side of the buffer plate is fixedly connected to the left end of the push rod. Two liquid holes are provided on the surface of the buffer plate.

[0007] The present invention further illustrates that a telescopic section is inserted into the sleeve, and the rear end of the telescopic section is fixed to the inner wall of the conveying chamber. A sphere is fixed to the front end of the telescopic section, and a limiting rod is fixed to the front end of the sphere. The telescopic section is connected to the right side of the buffer chamber through a pipeline, and the inner diameter of the pipeline is twice the inner diameter of the liquid hole. After the telescopic section extends out, the sphere contacts the spherical part of the ejector rod, and the limiting rod fits with the spherical part of the ejector rod.

[0008] The present invention further illustrates that a limiting block is fixed to one side of the cylinder. The inside of the push rod is hollow, and a sliding rod is slidably connected to the inner wall. Sliding grooves are provided on both the left and right sides of the push rod. A top ball is slidably connected to the inner wall of the left sliding groove, and a push rod is slidably connected to the inner wall of the right sliding groove. A slide rail is fixed to the right side of the buffer plate. Two blocking blocks are slidably connected to the inner wall of the slide rail. Both blocking blocks are in contact with the right side of the buffer plate and are respectively located inside the two liquid holes. A return spring is connected between the two blocking blocks. The top ball is located on the right side of the two blocking blocks and between the two blocking blocks. After the top ball moves to the left, it is inserted between the two blocking blocks.

[0009] The present invention further illustrates that the operation method of the conveying device includes the following steps: Step S1: The breathing mask is placed on the conveyor belt. The motor runs, and the conveyor belt is driven by the roller shaft to convey the breathing mask. When the breathing mask moves below the sterilization nozzle, the motor stops running, and the external liquid pump runs. The disinfectant is sprayed onto the breathing mask through the sterilization nozzle for disinfection work. Step S2: After disinfection, the motor starts again, and the disinfected breathing mask enters the subsequent process through the conveyor belt. Step S3, repeating steps S1 to S2 until all the breathing masks have been transmitted.

[0010] The present invention further describes that, while the breathing mask in step S1 is moved to the bottom of the sterilization nozzle via the conveyor belt, the cylinder operates to shorten the distance between the breathing mask and the sterilization nozzle, and precisely control the distance between the two.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention operates the cylinder to mesh the tooth block with the gear, thereby driving the top plate to rotate around the center through the push rod until it contacts and squeezes the inner surface of the conveyor belt, pushing the breathing mask upward, shortening the distance between the breathing mask and the sterilization nozzle, thereby enhancing the sterilization effect, and when the push-pull rod moves, it drives the buffer plate to slide to the right along the inner wall of the buffer cavity, and the buffer spring is deformed by force, thereby initially buffering the movement of the push-pull rod, and at the same time, the hydraulic oil on the right side of the buffer plate is squeezed and then flows back and forth between the liquid holes, and is further buffered by hydraulic means, and the speed of the push-pull rod is fully slowed down, thereby preventing the top plate from rotating around the center too fast to push the breathing mask up, and preventing the breathing mask from jumping on the conveyor belt and falling under the conveying equipment, thereby further protecting the breathing mask; When the buffer plate moves to the right, part of the liquid cannot pass through the liquid hole quickly, and thus enters the telescopic joint through the pipe, causing the telescopic joint to extend. The telescopic joint has a small extension force but can also support the spherical part of the ejector rod, thereby applying an outward force to the ejector plate, increasing the force of the ejector mask, and the force of the ejector plate against the inner surface of the conveyor belt increases, so that the ejector mask can rise slightly further upward, further shortening the distance between the arc-shaped mask and the sprayed disinfectant, thereby further improving the sterilization effect, and the ejector mask has a small rise amplitude and will not touch the sterilization nozzle and be damaged by it; When the hydraulic pressure of the external liquid pump is small, in order to ensure the sterilization effect, the hydraulic oil on the right side of the buffer plate can be fully squeezed into the telescopic joint, so that it can be further extended and provide supporting force after extension. The push rod further lifts the breathing mask upward through the top plate, and remains stable after lifting. At this time, the arc-shaped mask can be evenly sprayed with the sprayed disinfectant to receive enough disinfectant for disinfection, and the disinfection effect is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation position of the roller of the present invention; Figure 3 is a plan view of the delivery cavity of the present invention; Figure 4 It is a schematic internal structure diagram of the conveying cavity and the drum of the present invention; Figure 5 It is a schematic diagram of the installation position of the expansion joint of the present invention; Figure 6 It is a schematic internal structure diagram of the buffer cavity of the present invention; Figure 7 It is a schematic internal structure diagram of the push-pull rod of the present invention; Figure 8 It is a schematic internal structure diagram of the slide rail of the present invention; Figure 9 It is a schematic diagram of the pipeline connection mode between the buffer cavity and the expansion joint of the present invention; In the figure: 1, conveying frame; 2, conveyor belt; 3, roller shaft; 4, support plate; 5, sterilization spray pipe; 6, conveying cavity; 61, cylinder; 611, limit block; 62, push-pull rod; 621, sliding rod; 622, top ball; 623, push rod; 63, buffer cavity; 631, buffer plate; 632, buffer spring; 633, liquid hole; 64, slide rail; 641, block; 642, return spring; 7, motor; 8, sleeve; 81, gear; 82, expansion joint; 821, sphere; 822, limit rod; 9, drum; 91, ejector rod; 92, top plate; 93, limit disc; 94, compression spring. Specific embodiments

[0013] The following further non-limiting detailed description of the technical solution of the present invention is made in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0014] Please refer to Figures 1-9 , the present invention provides a technical solution: a respiratory mask production line conveying device and method, including a plurality of respiratory masks and a conveying device, the conveying device includes a conveying frame 1, a conveyor belt 2, two roller shafts 3, a support plate 4, a sterilization spray pipe 5, a conveying cavity 6 and a motor 7; The two roller shafts 3 are respectively installed on the inside of the conveying frame 1 by bearings, the conveyor belt 2 is sleeved on the outside of the two roller shafts 3, the support plate 4 is fixedly installed above the conveying frame 1, the sterilization spray pipe 5 is fixedly installed below the support plate 4 and is located above the conveyor belt 2, the sterilization spray pipe 5 is connected to an external liquid pump through a pipeline, and the external liquid pump is connected to an external disinfectant through a pipeline. The conveying cavity 6 is fixedly installed on one side of the conveying frame 1, and the motor 7 is fixedly installed on one side of the conveying frame 1 and its output end is connected to one of the roller shafts 3; In the middle of the inner wall of the conveyor frame 1, a sleeve 8 is installed through a bearing. The sleeve 8 is in a through shape, and a roller 9 is sleeved and fixed on the outer side of the front end. On the right side of the inner wall of the conveying cavity 6, a cylinder 61 is fixed, and a push-pull rod 62 is fixed at the output end of the cylinder 61. There is a hole on the front side of the conveying cavity 6, and the sleeve 8 is inserted into the hole. A gear 81 is fixed at the rear end of the sleeve 8. A number of tooth blocks are arranged below the push-pull rod 62 and are meshed with the gear 81 through the tooth blocks. A sliding hole is arranged on one side of the roller 9, and a push rod 91 is slidably connected in the sliding hole. The outer end of the push rod 91 is fixed with a top plate 92. The inner end of the push rod 91 is spherical, and a limiting disc 93 is fixed on the outer side. A compression spring 94 is fixed between the limiting disc 93 and the inner wall of the roller 9. After the sleeve 8 rotates, the top plate 92 contacts the inner side of the conveyor belt 2; Place the breathing mask on the conveyor belt 2. The motor 7 operates to drive one of the roller shafts 3 to rotate, and drives the other roller shaft 3 to rotate through the conveyor belt 2, so as to convey the breathing mask through the conveyor belt 2. When the breathing mask is conveyed below the sterilization spray pipe 5, the motor 7 stops operating. The external liquid pump extracts the disinfectant and inputs it into the sterilization spray pipe 5 through the pipeline, and then sprays it onto the breathing mask from its interior. At the same time, to ensure the sterilization effect, the cylinder 61 operates to drive the push-pull rod 62 to move to the right. Through the engagement of the tooth blocks and the gear 81, the gear 81 is driven to rotate. The gear 81 drives the sleeve 8 to rotate, and the sleeve 8 drives the roller 9 to rotate, so as to drive the top plate 92 to rotate around the center through the push rod 91 until it contacts and presses the inner surface of the conveyor belt 2, pushing the breathing mask upward and shortening the distance between the breathing mask and the sterilization spray pipe 5, thereby enhancing the sterilization effect.

[0015] A stroke control module is arranged inside the cylinder 61, and a hydraulic pressure identification module is arranged inside the external liquid pump. The hydraulic pressure identification module is electrically connected to the stroke control module. The hydraulic pressure identification module is used to identify the hydraulic pressure of the external liquid pump in real time, so as to judge the spraying force of the disinfectant from the sterilization spray pipe 5. The stroke control module is used to control the reciprocating stroke size of the cylinder 61 according to the spraying force of the disinfectant from the sterilization spray pipe 5; The external liquid pump is driven by electricity, and the stability of the voltage determines the hydraulic pressure of the liquid pump. During the process of the hydraulic pressure fluctuating greatly or little, the spraying force of the disinfectant from the sterilization spray pipe 5 is low. Therefore, according to the hydraulic pressure, the reciprocating stroke size of the cylinder 61 is controlled. The greater the stroke of the cylinder 61, the greater the rotation angle of the gear 81, so that the distance that the top plate 92 pushes the breathing mask upward is greater, and the distance between the breathing mask and the sterilization spray pipe 5 is greater. On the one hand, it fully ensures that the breathing mask is sterilized. On the other hand, when the spraying force of the disinfectant is strong, the distance between the breathing mask and the sterilization spray pipe 5 is large, avoiding the breathing mask from colliding with the sterilization spray pipe 5 and playing a role in protecting the breathing mask.

[0016] A buffer chamber 63 is fixed on the left side of the inner wall of the conveying chamber 6, a buffer plate 631 is slidably connected to the inner wall of the buffer chamber 63, and the right side of the buffer plate 631 is filled with hydraulic oil, a buffer spring 632 is connected between the left side of the buffer plate 631 and the left side of the inner wall of the buffer chamber 63, and the right side of the buffer plate 631 is fixed to the left end of the push-pull rod 62; The surface of the buffer plate 631 is provided with two liquid holes 633; However, the air source of the cylinder 61 is unstable, so the speed of the reciprocating movement is uncontrollable. As a result, when the push-pull rod 62 moves, the buffer plate 631 is driven to slide to the right along the inner wall of the buffer chamber 63, and the buffer spring 632 is deformed by the force, thereby initially buffering the movement of the push-pull rod 62. At the same time, the hydraulic oil on the right side of the buffer plate 631 is squeezed and then flows back and forth between the liquid holes 633, and is further buffered by hydraulic means, thereby fully slowing down the movement speed of the push-pull rod 62, thereby preventing the top plate 92 from rotating around the center too fast to push the breathing mask up, and preventing the breathing mask from jumping on the conveyor belt 2 and falling under the conveying equipment, thereby further protecting the breathing mask.

[0017] An expansion joint 82 is inserted into the sleeve 8, and the rear end of the expansion joint 82 is fixed to the inner wall of the delivery chamber 6, a sphere 821 is fixed to the front end of the expansion joint 82, and a limit rod 822 is fixed to the front end of the sphere 821. The expansion joint 82 is connected to the right pipe of the buffer chamber 63, and the inner diameter of the pipe is twice the inner diameter of the liquid hole 633; After the telescopic joint 82 is extended, the ball 821 contacts the spherical part of the top rod 91, and the limiting rod 822 fits the spherical part of the top rod 91; Through the above steps, since the inner diameter of the pipe between the buffer chamber 63 and the telescopic joint 82 is twice the inner diameter of the liquid hole 633, when the buffer plate 631 moves to the right, part of the liquid cannot quickly pass through the liquid hole 633, and enters the telescopic joint 82 through the pipe, so that the telescopic joint 82 is extended. The telescopic joint 82 extends with little force but can also support the spherical part of the top rod 91, thereby applying an outward force to the top plate 92 to increase the force of the top breathing mask, and the force of the top plate 92 against the inner surface of the conveyor belt 2 is increased, the breathing mask can further rise slightly upward, further shortening the distance between the arc-shaped mask and the sprayed disinfectant, thereby further improving the sterilization effect, and the breathing mask rises slightly and will not touch the sterilization nozzle 5 and be punctured by it.

[0018] A limit block 611 is fixed on one side of the cylinder 61, the interior of the push-pull rod 62 is hollow, and a slide rod 621 is slidably connected to the inner wall. Slide grooves are provided on both the left and right sides of the push-pull rod 62, and a top ball 622 is slidably connected to the inner wall of the left slide groove, and a push rod 623 is slidably connected to the inner wall of the right slide groove; A slide rail 64 is fixed to the right side of the buffer plate 631. Two blocks 641 are slidably connected to the inner wall of the slide rail 64. The two blocks 641 are both fitted to the right side of the buffer plate 631 and are respectively located on the inner sides of the two liquid holes 633. A return spring 642 is connected between the two blocks 641. The top ball 622 is located on the right side of the two blocks 641 and between the two blocks 641. The top ball 622 moves to the left and is inserted between the two blocks 641. When the hydraulic pressure of the external liquid pump is relatively small, in order to ensure the sterilization effect, the stroke of the cylinder 61 is increased, so that the distance that the push-pull rod 62 moves to the right increases. At this time, the push rod 623 contacts the limit block 611, and the limit block 611 supports the push rod 623. The push rod 623 inserts the top ball 622 between the two blocking blocks 641 through the slide rod 621, so that it slides in the opposite direction through the slide rail 64. The two blocking blocks 641 block the liquid hole 633. After that, the cylinder 61 continues to run, and the hydraulic oil on the right side of the buffer plate 631 can be fully squeezed into the telescopic joint 82, so that it can be further extended and provide support force after extension. The push rod 91 further lifts the breathing mask upward through the top plate 92, and remains stable after lifting. At this time, the arc-shaped mask can be evenly sprayed with the sprayed disinfectant to receive enough disinfectant for disinfection, and the disinfection effect is guaranteed; At the same time, the return spring 642 is deformed, and when the cylinder 61 is reset, the return spring 642 is reset and pushes the top ball 622 out from between the blocking blocks 641, so that the delivery of the breathing mask can operate normally.

[0019] The operation method of the conveying equipment comprises the following steps: Step S1, the breathing mask is placed on the conveyor belt 2, the motor 7 is running, and the conveyor belt 2 is driven by the roller 3 to transport the breathing mask. When the breathing mask moves to the bottom of the sterilization nozzle 5, the motor 7 stops running, and the external liquid pump is running to spray the disinfectant onto the breathing mask through the sterilization nozzle 5 to perform the disinfection work; Step S2: After the disinfection is completed, the motor 7 is started again, and the disinfected respiratory mask enters the subsequent process through the conveyor belt 2; Step S3, repeating steps S1 to S2 until all the breathing masks have been transmitted.

[0020] While the breathing mask in step S1 is moved to below the sterilizing nozzle 5 via the conveyor belt 2, the cylinder 61 operates to shorten the distance between the breathing mask and the sterilizing nozzle 5 and precisely control the distance between the two.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, 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 should not be construed as a limitation on the present invention.

[0022] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A conveying device for a breathing mask production line, comprising a plurality of breathing masks and a conveying device, characterized in that: The conveying device includes a conveying frame (1), a conveyor belt (2), two roller shafts (3), a support plate (4), a sterilization spray pipe (5), a conveying cavity (6), and a motor (7); The two roller shafts (3) are respectively installed inside the conveying frame (1) by bearings. The conveyor belt (2) is sleeved outside the two roller shafts (3). The support plate (4) is fixedly installed above the conveying frame (1). The sterilization spray pipe (5) is fixedly installed below the support plate (4) and above the conveyor belt (2). The sterilization spray pipe (5) is connected to an external liquid pump through a pipeline, and the external liquid pump is connected to an external disinfectant pipeline. The conveying cavity (6) is fixedly installed on one side of the conveying frame (1). The motor (7) is fixedly installed on one side of the conveying frame (1), and its output end is connected to one of the roller shafts (3); A sleeve (8) is installed in the middle of the inner wall of the conveying frame (1) by bearings. The sleeve (8) is in a through shape, and a roller (9) is fixedly sleeved on the outer side of the front end. A cylinder (61) is fixed on the right side of the inner wall of the conveying cavity (6), and a push-pull rod (62) is fixed at the output end of the cylinder (61). There is a hole on the front side of the conveying cavity (6), and the sleeve (8) passes through the hole. A gear (81) is fixed at the rear end of the sleeve (8). There are several tooth blocks arranged below the push-pull rod (62), and they are meshed with the gear (81). A sliding hole is arranged on one side of the roller (9), and a push rod (91) is slidably connected in the sliding hole. The outer end of the push rod (91) is fixed with a top plate (92). The inner end of the push rod (91) is spherical, and a limit disk (93) is fixed on the outer side. A compression spring (94) is fixed between the limit disk (93) and the inner wall of the roller (9). After the sleeve (8) rotates, the top plate (92) contacts the inner side of the conveyor belt (2).

2. The conveying device for a respiratory mask production line according to claim 1, wherein: A stroke control module is arranged inside the cylinder (61), and a hydraulic pressure identification module is arranged inside the external liquid pump. The hydraulic pressure identification module is electrically connected to the stroke control module. The hydraulic pressure identification module is used to identify the hydraulic pressure of the external liquid pump in real time, so as to judge the spraying force of the disinfectant from the sterilization spray pipe (5). The stroke control module is used to control the reciprocating stroke size of the cylinder (61) according to the spraying force of the disinfectant from the sterilization spray pipe (5).

3. The conveying device for a respiratory mask production line according to claim 2, wherein: A buffer cavity (63) is fixed on the left side of the inner wall of the conveying cavity (6). A buffer plate (631) is slidably connected to the inner wall of the buffer cavity (63), and hydraulic oil is filled on the right side of the buffer plate (631). A buffer spring (632) is connected between the left side of the buffer plate (631) and the left side of the inner wall of the buffer cavity (63). The right side of the buffer plate (631) is fixedly connected to the left end of the push-pull rod (62); Two liquid holes (633) are arranged on the surface of the buffer plate (631).

4. The conveying device for a respiratory mask production line according to claim 3, characterized in that: A telescopic joint (82) is inserted into the interior of the sleeve (8), and the rear end of the telescopic joint (82) is fixed to the inner wall of the conveying cavity (6). A sphere (821) is fixed to the front end of the telescopic joint (82), and a limiting rod (822) is fixed to the front end of the sphere (821). The telescopic joint (82) is connected to the right-side pipe of the buffer cavity (63), and the inner diameter of the pipe is twice the inner diameter of the liquid hole (633). After the telescopic joint (82) extends out, the sphere (821) contacts the spherical part of the ejector rod (91), and the limiting rod (822) fits against the spherical part of the ejector rod (91).

5. The conveying device for a respiratory mask production line according to claim 4, characterized in that: A limiting block (611) is fixed to one side of the air cylinder (61). The interior of the push-pull rod (62) is hollow, and a sliding rod (621) is slidably connected to the inner wall. Chutes are formed on both the left and right sides of the push-pull rod (62), and a top ball (622) is slidably connected to the inner wall of the left chute, and a push rod (623) is slidably connected to the inner wall of the right chute. A slide rail (64) is fixed to the right side of the buffer plate (631). Two blocking blocks (641) are slidably connected to the inner wall of the slide rail (64). Both of the blocking blocks (641) are in contact with the right side of the buffer plate (631) and are respectively located inside the two liquid holes (633). A return spring (642) is connected between the two blocking blocks (641). The top ball (622) is located on the right side of the two blocking blocks (641) and between the two blocking blocks (641). After the top ball (622) moves to the left, it is inserted between the two blocking blocks (641).

6. A method for operating a conveying device of a respiratory mask production line, the conveying device of a respiratory mask production line according to claim 5, characterized in that: The operation method of the conveying device includes the following steps: Step S1: The breathing mask is placed on the conveyor belt (2), and the motor (7) operates. The conveyor belt (2) is driven by the roller shaft (3) to convey the breathing mask. After the breathing mask moves below the sterilization spray pipe (5), the motor (7) stops operating, and an external liquid pump operates to spray disinfectant onto the breathing mask through the sterilization spray pipe (5) for disinfection work. Step S2: After disinfection is completed, the motor (7) starts again, and the disinfected breathing mask enters the subsequent process through the conveyor belt (2). Step S3: Repeat Step S1 to Step S2 until all the breathing masks are conveyed.

7. The operating method of a conveying device for a respiratory mask production line according to claim 6, characterized in that: While the breathing mask in Step S1 moves below the sterilization spray pipe (5) through the conveyor belt (2), the air cylinder (61) operates to shorten the distance between the breathing mask and the sterilization spray pipe (5) and precisely control the distance between the two.

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