Pneumatic plastic beautifying boosting device

Abstract

The utility model relates to the field of modelling equipment, and particularly discloses a pneumatic modelling boosting device which comprises a gun body provided with a first air chamber, a second air chamber and a valve cavity, the first air chamber is connected with an air inlet pipe, and a piston and a firing pin are arranged in the second air chamber; the first air chamber and the second air chamber are communicated through a first vent hole, a control valve is arranged on the air outlet side of the first vent hole, a trigger is arranged on the gun body, and the trigger can control opening and closing of the first vent hole by pressing the control valve. The piston is connected with the firing pin through a limiting sleeve, a limiting ring is arranged in an inner cavity of the limiting sleeve, a friction ring is arranged at the top of the firing pin and arranged above the limiting ring, and the diameter of the friction ring is larger than the hole diameter of the limiting ring. According to the utility model, the predetermined process requirement can be realized by utilizing lower air pressure, the requirement on corollary equipment is low, and the control is easy.

Description

Technical Field

[0001] This utility model relates to a plasticizing device, and more particularly to a pneumatic plasticizing booster device. Background Technology

[0002] Needle-free injection is a technique that uses high-pressure, high-speed airflow or mechanical power to directly deliver medications or cosmetic ingredients into the skin or subcutaneous tissue, eliminating the need for traditional needle punctures. In the field of aesthetic medicine, it has gained increasing attention due to its "non-invasive and low-pain" characteristics. The mesotherapy booster device, used to connect to the non-invasive injector, is the main driving and control device for non-invasive injection.

[0003] Existing mesotherapy booster devices include a switching valve, a firing mechanism, and an air intake mechanism. The air intake mechanism is connected to the firing mechanism via the switching valve. The operator controls the high-pressure gas in the air intake mechanism to enter the firing mechanism through the switching valve. The firing pin of the firing mechanism thrusts into the non-invasive injector, providing instantaneous pressure and propelling the active ingredient in the non-invasive injector at high speed. However, the existing firing pin is directly driven by high-pressure gas, lacking instantaneous energy release capability, resulting in the active ingredient not reaching the required velocity in the non-invasive injector. Furthermore, the needle-free injection process requires precise operation. The existing switching valve directly controls the opening and closing of the air passage through the valve core. Opening the air passage requires the valve core to apply significant thrust, and the operator needs to apply considerable pressure to the button, which can easily lead to misalignment and affect the cosmetic effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a pneumatic plastic injection device that delivers a faster terminal velocity for the impact pin, achieves predetermined process requirements with lower air pressure, has low requirements for supporting equipment, and is easy to operate.

[0005] To address the aforementioned technical problems, this utility model provides a pneumatic plastic injection device, comprising a gun body having a first air chamber, a second air chamber, and a valve chamber. The first air chamber is connected to an air inlet pipe, and the second air chamber contains a piston and a firing pin. The first and second air chambers are connected through a first vent hole, and a control valve is provided on the outlet side of the first vent hole. The gun body is equipped with a trigger, which can control the opening and closing of the first vent hole by pressing the control valve. The piston is connected to the firing pin through a limiting sleeve, and a limiting ring is provided in the inner cavity of the limiting sleeve. A friction ring is provided on the top of the firing pin, and the friction ring is located above the limiting ring, with the diameter of the friction ring being larger than the aperture of the limiting ring.

[0006] As an improvement to the above solution, the firing pin is further provided with an air passage extending from its top surface to the side wall surface below the friction ring; a return spring is provided between the piston and the second air chamber.

[0007] As an improvement to the above solution, the control valve is disposed in the valve cavity and includes a traveling valve element, a valve core element, a ejector pin, and a valve cover. The traveling valve element includes a sealing end, a sleeve cavity, a power ring, and a first air passage communicating from the top surface of the traveling valve element to the sleeve cavity. The sealing end is used to block the first vent hole. The power ring is located outside the sleeve cavity and abuts against the side wall of the valve cavity. The valve core element is fixedly disposed in the valve cavity and includes a valve core column and a valve core seat. The valve core column is disposed in the center of the valve core seat and sleeved in the sleeve cavity. The valve core element has a second air passage communicating from the top surface of the valve core column to the bottom surface of the valve core seat. The valve core seat has a third air passage communicating between its upper surface and its bottom surface. The valve cover is disposed at the bottom of the valve cavity and has a limiting hole. The ejector pin is disposed in the limiting hole, with its bottom abutting against the trigger and its top being able to be driven by the trigger to press against the bottom surface of the valve core seat, thereby blocking the second air passage.

[0008] As an improvement to the above solution, the valve chamber includes an upper valve chamber and a lower valve chamber that are interconnected, and the traveling valve is located in the upper valve chamber; a stepped portion is provided at the junction of the upper valve chamber and the lower valve chamber, and the valve core seat is pressed onto the stepped portion by the valve cover.

[0009] As an improvement to the above solution, the gun body includes a handle portion arranged horizontally and a working portion arranged vertically at the front end of the handle portion. The first air chamber is located inside the handle portion, the second air chamber is located inside the working portion, and the air inlet pipe is located at the rear end of the handle portion.

[0010] As an improvement to the above solution, the handle portion is further provided with an exhaust channel, which is located below the first air chamber and communicates with the second air chamber through a second vent hole; the sealing end is provided with a first sealing element for blocking the first vent hole; the outer wall of the moving valve is provided with a second sealing element for blocking the second vent hole.

[0011] As an improvement to the above solution, the bottom of the moving valve is provided with a first air chamber, the top of the valve cover is provided with a second air chamber, and the third air passage connects the first air chamber and the second air chamber.

[0012] As an improvement to the above solution, the ejector pin includes a limiting post and a tapered portion disposed on the top of the limiting post. The limiting post is disposed in the limiting hole, and a third sealing element is provided at the connection between the tapered portion and the limiting post.

[0013] As an improvement to the above solution, the top of the working part is provided with an adjustment mechanism, which includes a top cover, a knob and an adjustment screw. The top cover is located on the top of the second air chamber, and the adjustment screw is connected to the top cover by a thread. The top of the adjustment screw is fixedly connected to the knob, and the bottom of the adjustment screw extends into the second air chamber. By rotating the knob, the depth of the adjustment screw extending into the second air chamber can be controlled.

[0014] As an improvement to the above solution, the lower part of the second air chamber is provided with a lower cover; the lower cover is provided with a firing pin guide, and the firing pin can extend outward from the firing pin guide.

[0015] Implementing the embodiments of this utility model has the following beneficial effects:

[0016] With the above structure, the terminal velocity of the firing pin is faster, the predetermined process requirements can be achieved with lower air pressure, the requirements for supporting equipment are low, and it is easy to operate.

[0017] With the above-mentioned control valve, the ejector pin is less affected by the gas pressure in the first gas chamber. Therefore, the operator only needs to apply a small amount of force to move the ejector pin, thereby controlling the supply of compressed gas. The operation is sensitive and quick, making it easy to use in fields such as medical aesthetics that require precise operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a pneumatic plastic booster device according to this utility model;

[0019] Figure 2 This is an exploded view of a pneumatic plastic booster device according to this utility model;

[0020] Figure 3 This is a cross-sectional view of a pneumatic plastic-assisted propulsion device according to this utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of part A;

[0022] Figure 5 This is a schematic diagram of the assembly structure of the piston and firing pin of this utility model;

[0023] Figure 6 This is a schematic diagram illustrating the airflow principle of a pneumatic plastic booster device according to this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0025] like Figures 1-3 As shown, a specific embodiment of this utility model provides a pneumatic plastic injection device, including a gun body 1 having a first air chamber 11, a second air chamber 12, and a valve chamber 13. The first air chamber 11 is connected to an air inlet pipe 14, and the second air chamber 12 contains a piston 2 and a firing pin 3. The first air chamber 11 and the second air chamber 12 are connected through a first vent hole 15, and a control valve 4 is provided on the air outlet side of the first vent hole 15. The gun body 1 is equipped with a trigger 5, which can control the opening and closing of the first vent hole 15 by pressing the control valve 4. Figure 5 As shown, the piston 2 is connected to the firing pin 3 via a limiting sleeve 6. The inner cavity of the limiting sleeve 6 is provided with a limiting ring 61. The top of the firing pin 3 is provided with a friction ring 31, which is positioned above the limiting ring 61, and the diameter of the friction ring 31 is larger than the aperture of the limiting ring 61. Preferably, the firing pin 3 also has an air passage 32 extending from its top surface to the side wall surface below the friction ring 31; a return spring 21 is provided between the piston 2 and the second air chamber 12.

[0026] like Figure 6 As shown, during operation, the operator installs the matching syringe on the gun body 1. When the trigger 5 is pressed, the control valve 4 connects the first air chamber 11 and the second air chamber 12. High-pressure gas enters the second air chamber 12, pushing the piston 2 downward. Initially, the friction ring 31 of the firing pin 3 abuts against the limiting ring 61 of the limiting sleeve 6, and the top of the firing pin is a certain distance from the piston 2. When the firing pin 3 follows the piston 2 downward to the predetermined position, the resistance of the syringe increases, and the firing pin 3 stops moving. The piston 2 continues to move downward under the drive of air pressure. When the bottom of the piston 2 contacts the top of the firing pin 3, due to the presence of the air passage 32, the air at the top of the firing pin 3 can quickly flow through the air passage 32 to the side of the firing pin 3. The momentum of the piston 2 is instantly transferred to the firing pin 3, and the firing pin 3 rushes into the preset position of the syringe at high speed, pushing the effective substance in the syringe to be ejected, meeting the needs of medical aesthetics. With the above structure, the terminal velocity of the firing pin 3 is faster, and the predetermined process requirements can be achieved with lower air pressure. The requirements for supporting equipment are low, and it is easy to operate.

[0027] In some embodiments, the control valve 4 can be a conventional valve having a valve core directly connected to the trigger 5 and capable of displacement by the trigger. When the valve core is in a predetermined position, it can block the first vent hole 15; when it is displaced by the trigger 5, it can open the first vent hole 15. To improve the ease of operation and precision of the trigger 5, this embodiment proposes a novel control valve 4, combined with... Figure 4 As shown, the control valve 4 is disposed in the valve cavity 13 and includes a traveling valve element 41, a valve core element 42, a pin 43, and a valve cover 44. The traveling valve element 41 includes a sealing end 411, a sleeve cavity 412, a power ring 413, and a first air passage 414 communicating from the top surface of the traveling valve element 41 to the sleeve cavity 412. The sealing end 411 is used to block the first vent hole 15. The power ring 413 is located outside the sleeve cavity 412 and abuts against the side wall of the valve cavity 13. The valve core element 42 is fixedly disposed in the valve cavity 13 and includes a valve core column 421 and a valve core seat 422. The valve core 421 is located in the center of the valve core seat 422 and sleeved within the sleeve cavity 412. The valve core component 42 has a second air passage 423 connecting the top surface of the valve core 421 to the bottom surface of the valve core seat 422. The valve core seat 422 has a third air passage 424 connecting its upper surface and bottom surface. The valve cover 44 is located at the bottom of the valve cavity 13 and has a limiting hole 441. The ejector pin 43 is located in the limiting hole 441, with its bottom abutting against the trigger 5 and its top able to be driven by the trigger 5 to press against the bottom surface of the valve core seat 422, thereby blocking the second air passage 423. The bottom of the movable valve component 41 has a first air chamber 415, and the top of the valve cover 44 has a second air chamber 442. The third air passage 424 connects the first air chamber 415 and the second air chamber 442.

[0028] It should be noted that when the trigger 5 is in the released state, the ejector pin 43 separates from the valve core 42, and the gas in the first air chamber 11 enters the second air passage 423 from the first air passage 414. After being ejected from the second air passage 423, it sequentially enters the second air chamber 442, the third air passage 424, and the first air chamber 415 to reach the bottom of the moving valve 41. Since the bottom area of ​​the moving valve 41 is larger than the area of ​​its sealing end 411, the air pressure will push the moving valve 41 to rise, and the sealing end 411 will block the first vent 15, thus blocking the connection between the first air chamber 11 and the second air chamber 12.

[0029] When the operator presses the trigger 5, the ejector pin 43 moves upward, blocking the outlet of the second air passage 423. Air in the second air chamber 442, the third air passage 424, and the first air chamber 415 will flow out from the gap between the ejector pin 43 and the limiting hole 441, causing a relatively low pressure to form on the bottom surface of the moving valve 41. The moving valve 41 moves downward, and the sealing end 411 leaves the first vent hole 15, connecting the first air chamber 11 and the second air chamber 12.

[0030] With the control valve 4 described above, the ejector pin 43 is less affected by the gas pressure in the first gas chamber 415. Therefore, the operator only needs to apply a small amount of force to move the ejector pin 43, thereby controlling the supply of compressed gas. The operation is sensitive and quick, making it convenient for use in fields such as medical aesthetics that require precise operation.

[0031] In some embodiments, the valve chamber 13 includes an upper valve chamber 13a and a lower valve chamber 13b that are interconnected, and the traveling valve 41 is located in the upper valve chamber 13a; a stepped portion 131 is provided at the junction of the upper valve chamber 13a and the lower valve chamber 13b, and the valve core seat 422 is pressed against the stepped portion 131 by the valve cover 44. With the upper and lower valve chamber design, the traveling valve 41, valve core 42, ejector pin 43, and valve cover 44 only need to be sequentially installed into the valve chamber 13. The traveling valve 41 moves in the upper valve chamber 13a, while the valve core 42 is fixed in a predetermined position in the valve chamber 13. The traveling valve 41, valve core 42, and valve cover 44 all have a sealing design with respect to the valve chamber 13 to prevent gas from escaping from the gaps between them.

[0032] Preferably, the gun body 1 includes a horizontally arranged handle portion 1a and a vertically arranged working portion 1b at the front end of the handle portion 1a. The first air chamber 11 is located inside the handle portion 1a, the second air chamber 12 is located inside the working portion 1b, and the air inlet pipe 14 is located at the rear end of the handle portion 1a. When the operator holds the handle portion 1a, the working portion 1b is naturally in a vertical position, facilitating operation.

[0033] To achieve rapid reset of piston 2, an exhaust channel 16 is provided inside the handle portion 1a. The exhaust channel 16 is located below the first air chamber 11 and communicates with the second air chamber 12 through a second vent hole 161. The sealing end 411 is provided with a first sealing element 416 for blocking the first vent hole 15. The outer wall of the traveling valve 41 is provided with a second sealing element 417 for blocking the second vent hole 161. When the first vent hole 15 is closed, piston 2 tends to reset upward under the action of the reset spring 21. At this time, the second sealing element 417 moves above the second vent hole 161, so that the second air chamber 12 communicates with the second vent hole 161. The gas above piston 2 can be quickly discharged from the exhaust channel 16, accelerating the reset speed of piston 2 and shortening the working cycle of the firing pin 3.

[0034] Preferably, the ejector pin 43 includes a limiting post 431 and a tapered portion 432 disposed on the top of the limiting post 431. The limiting post 431 is disposed in the limiting hole 441, and a third sealing member 433 is provided at the connection between the tapered portion 432 and the limiting post 431. The third sealing member 433 is used to seal the limiting hole 441 when the trigger 5 is released and the bottom surface of the tapered portion 432 abuts against the limiting hole 441, preventing compressed gas from flowing out of the limiting hole 441 during daily use.

[0035] To control the working stroke of the firing pin 3, an adjustment mechanism is provided on the top of the working part 1b. The adjustment mechanism includes a top cover 71, a knob 72, and an adjustment screw 73. The top cover 71 is located on the top of the second air chamber 12. The adjustment screw 73 is threadedly connected to the top cover 71. The top of the adjustment screw 73 is fixedly connected to the knob 72, and the bottom of the adjustment screw 73 extends into the second air chamber 12. By rotating the knob 72, the depth of the adjustment screw 73 in the second air chamber 12 can be controlled. The side of the top cover 71 can also be provided with a scale. The top cover 71 can also be provided with an indicator 74 extending to the side of the top cover 71. The indicator 74 moves with the top cover 71. According to the relationship between the indicator 74 and the scale, the current piston 2 stroke adjustment amount can be obtained.

[0036] In some embodiments, for ease of assembly, a lower cover 8 is provided at the lower part of the second air chamber 12; the lower cover 8 is provided with a firing pin guide 81, from which the firing pin 3 can extend outward. The lower cover 8 also serves as a connecting mechanism for the corresponding syringe; after the corresponding syringe is installed on the lower cover 8, the firing pin 3 extends into the syringe and connects with the corresponding actuator of the syringe.

[0037] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A pneumatic plastic-assisted propulsion device, characterized in that, The gun body includes a first gas chamber, a second gas chamber, and a valve chamber, wherein a piston and a firing pin are disposed in the second gas chamber; The first air chamber and the second air chamber are connected through a first vent hole. A control valve is provided on the outlet side of the first vent hole, and a trigger is provided on the gun body. The piston is connected to the firing pin via a limiting sleeve. The inner cavity of the limiting sleeve is provided with a limiting ring. The top of the firing pin is provided with a friction ring. The friction ring is located above the limiting ring, and the diameter of the friction ring is larger than the aperture of the limiting ring.

2. The pneumatic plastic-assisted propulsion device as described in claim 1, characterized in that, The firing pin is also provided with an air passage extending from its top surface to the side wall surface below the friction ring; a return spring is provided between the piston and the second air chamber.

3. The pneumatic plastic-assisted propulsion device as described in claim 1 or 2, characterized in that, The control valve is disposed in the valve cavity and includes a traveling valve element, a valve core element, a ejector pin, and a valve cover. The traveling valve includes a sealing end, a sleeve cavity, a power ring, and a first air passage that communicates from the top surface of the traveling valve to the sleeve cavity. The sealing end is used to block the first vent hole, and the power ring is located outside the sleeve cavity and abuts against the side wall of the valve cavity. The valve core is fixedly disposed in the valve cavity, including a valve core column and a valve core seat. The valve core column is disposed in the center of the valve core seat and sleeved in the sleeve cavity. The valve core has a second air passage that connects the top surface of the valve core column to the bottom surface of the valve core seat. The valve core seat has a third air passage that connects its upper surface and bottom surface. The valve cover is located at the bottom of the valve cavity and has a limiting hole. The pin is located in the limiting hole, with its bottom abutting against the trigger and its top being able to be driven by the trigger to press against the bottom surface of the valve core seat, thereby blocking the second air passage.

4. The pneumatic plastic-assisted propulsion device as described in claim 3, characterized in that, The valve chamber includes an upper valve chamber and a lower valve chamber that are interconnected, and the movable valve element is located in the upper valve chamber; a stepped portion is provided at the junction of the upper valve chamber and the lower valve chamber, and the valve core seat is pressed against the stepped portion by the valve cover.

5. The pneumatic plastic-assisted propulsion device as described in claim 3, characterized in that, The gun body includes a handle portion arranged horizontally and a working portion arranged vertically at the front end of the handle portion. The first air chamber is located inside the handle portion, and the second air chamber is located inside the working portion. The first air chamber is connected to an air inlet pipe, which is located at the rear end of the handle portion.

6. The pneumatic plastic-assisted propulsion device as described in claim 5, characterized in that, The handle portion shown also has an exhaust channel located below the first air chamber and connected to the second air chamber via a second vent hole; the sealing end has a first sealing element for sealing the first vent hole; the outer wall of the moving valve has a second sealing element for sealing the second vent hole.

7. The pneumatic plastic-assisted propulsion device as described in claim 3, characterized in that, The bottom of the moving valve is provided with a first air chamber, the top of the valve cover is provided with a second air chamber, and the third air passage connects the first air chamber and the second air chamber.

8. The pneumatic plastic-assisted propulsion device as described in claim 3, characterized in that, The ejector pin includes a limiting post and a tapered portion disposed on the top of the limiting post. The limiting post is disposed in the limiting hole, and a third sealing element is provided at the connection between the tapered portion and the limiting post.

9. The pneumatic plastic-assisted propulsion device as described in claim 5, characterized in that, The top of the working part is provided with an adjustment mechanism, which includes a top cover, a knob and an adjustment screw. The top cover is located on the top of the second air chamber. The adjustment screw is connected to the top cover by a thread. The top of the adjustment screw is fixedly connected to the knob. The bottom of the adjustment screw extends into the second air chamber. By rotating the knob, the depth of the adjustment screw extending into the second air chamber can be controlled.

10. The pneumatic plastic-assisted propulsion device as described in claim 3, characterized in that, The lower part of the second air chamber is provided with a lower cover; the lower cover is provided with a firing pin guide, and the firing pin can extend outward from the firing pin guide.

Images