Cambered-surface tank-shaped metal canister, processing device thereof and gas mask

Abstract

The invention relates to the technical field of canisters, in particular to a cambered-surface can-shaped metal canister, a machining device of the cambered-surface can-shaped metal canister and a gas mask, and mainly solves the technical problems that an existing metal canister is poor in structural stability and dynamic protection performance, and the view of a wearer can be affected. The metal canister comprises a canister body and a canister cover, the canister body is of a barrel-shaped structure, a barrel opening of the canister body is connected with the canister cover, a hole is formed in the center of the barrel bottom of the canister body, the hole edge protrudes outwards to form a canister neck connecting opening, the canister neck connecting opening is used for being connected with a cover body, and the barrel bottom of the canister body is arranged to be an inwards-concave arc face so as to be attached to the cover body. The barrel bottom of the metal canister is arranged to be the inwards-concave cambered surface, so that the metal canister can be tightly attached to the outer surface of the convex-surface-shaped cover body, the canister is not prone to swinging in the using process, and the structural stability and the dynamic protection performance of the metal canister are effectively improved; meanwhile, as the gravity center of the canister deviates towards one side of the mask body, the total height of the canister protruding out of the mask body is reduced, and the lower view field of a wearer can be remarkably enlarged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter canister, in particular to an arc-surface can body shaped metal filter canister, a processing device thereof and a gas mask. BACKGROUND

[0002] The gas mask is a kind of personal protective equipment, which is mainly used to protect the respiratory system, eyes and facial skin of the personnel from the invasion of harmful substances such as toxic and harmful gases, dust and bacteria. The filter canister is the core component of the gas mask, which is mainly used to purify harmful substances. The metal filter canister occupies an irreplaceable position in the field of filter canister due to its excellent reliability. The metal filter canister comprises a shell, a filter layer and a filter smoke layer arranged in the shell. The shell generally comprises a can body and a can cover. The can body is in a barrel structure. The barrel opening of the can body is connected with the can cover. The center of the barrel bottom of the can body is provided with a hole, and the hole is outwardly convex to form a can neck connecting port. The can neck connecting port is used to connect the mask body.

[0003] The can body of the existing metal filter canister is generally formed by stamping process of sheet metal through processes such as blanking, stretching, shaping, edge cutting and punching. The barrel bottom of the can body is in a plane structure. However, since the outer surface of the mask body is generally provided in a convex surface shape, the metal filter canister cannot be closely attached to the mask body. The metal filter canister is easily swung by external force, which leads to poor structural stability and dynamic protection performance. In addition, there is a certain distance between the barrel bottom of the metal can body and the mask body. The total height of the filter canister protruding from the mask body is large, which also affects the field of vision of the wearer.

[0004] Therefore, there is an urgent need for a metal filter canister with strong structural stability, good dynamic protection performance and without affecting the field of vision of the wearer. SUMMARY

[0005] In order to overcome the technical defects of the existing metal filter canister, such as poor structural stability and dynamic protection performance and affecting the field of vision of the wearer, the present application provides an arc-surface can body shaped metal filter canister, a processing device thereof and a gas mask.

[0006] The arc-surface can body shaped metal filter canister provided by the present application comprises a can body and a can cover. The can body is in a barrel structure. The barrel opening of the can body is connected with the can cover. The center of the barrel bottom of the can body is provided with a hole, and the hole is outwardly convex to form a can neck connecting port. The can neck connecting port is used to connect the mask body. The barrel bottom of the can body is provided in an arc surface in a concave shape to be attached to the mask body.

[0007] The processing device of the arc-surface can body shaped metal filter canister provided by the present application comprises: a rack; a rotating shaft rotatably installed on the rack and connected with a first driving member for driving the rotation of the rotating shaft. The rotating shaft is arranged left and right. The core mold is a cylindrical structure and is fixedly sleeved on the rotating shaft. The outer wall of the core mold is used to be sleeved inside the barrel side wall of the metal canister to be processed. The left end surface of the core mold is set as an inwardly concave arc surface to form the barrel bottom of the metal canister to be processed, and the left end of the inner wall of the core mold is flush with the left end of the rotating shaft or extends outward from the left end of the rotating shaft. A positioning assembly comprising a second driving member and a positioning cylinder, wherein the second driving member is mounted on the frame and is used to output linear motion in the left and right directions, and the positioning cylinder is used to be fixedly sleeved on the canister neck connection port of the metal canister to be processed, and the positioning cylinder is rotatably mounted on the output end of the second driving member and is always coaxial with the rotation axis; The rolling assembly includes a third driving member and a rolling wheel. The third driving member is installed on the frame and is used to output linear motion in the radial direction and linear motion in the left and right directions. The rolling wheel is used to roll the bottom of the barrel of the metal filter canister to be processed. The rolling wheel is installed at the output end of the third driving member and is used to roll in the radial direction.

[0008] Optionally, the first driving member is a servo motor, and the rotating shaft is drivingly connected to the output shaft of the servo motor, or the output shaft of the servo motor directly serves as the rotating shaft.

[0009] Optionally, the rolling wheel is a flexible wheel.

[0010] Optionally, the third driving member includes a hydraulic cylinder for outputting linear motion in the left and right directions and a linear power member for outputting radial linear motion, the fixed part of the linear power member is fixed on the frame, the cylinder body of the hydraulic cylinder is fixed on the output part of the linear power member, and the rolling wheel is installed on the end of the piston rod of the hydraulic cylinder.

[0011] The gas mask provided by the present invention comprises a mask body, the outer surface of which is convex, and further comprises: The aforementioned arc-shaped metal canister is connected to the cover body through the can neck connection port, and the barrel bottom of the can body is in contact with the outer surface of the cover body.

[0012] The technical solution provided by the present invention has the following advantages compared with the prior art: The arc-shaped metal gas filter canister of the present invention can fit tightly with the outer surface of the convex cover because the bottom of the barrel is set to be a concave arc surface. The gas filter canister is not easy to swing during use, which effectively improves the structural stability and dynamic protection performance of the metal gas filter canister; at the same time, since the center of gravity of the gas filter canister is offset to one side of the cover body, the total height of the gas filter canister protruding from the cover body is reduced, which can significantly increase the wearer's downward field of view, thereby improving performance in specific conditions such as shooting.

[0013] The processing device for the arc-shaped metal gas filter canister provided by the present invention can produce the aforementioned arc-shaped metal gas filter canister, and thus has the aforementioned advantages.

[0014] The gas mask provided by the present invention has the above-mentioned advantages because it includes the aforementioned curved tank-shaped metal gas filter canister. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram showing the combination of a processing device and a gas filter canister in an embodiment of the present invention; Figure 2 A schematic structural diagram of a gas mask according to an embodiment of the present invention is shown.

[0018] In the picture: 1. Tank body; 2. Tank cover; 3. Tank neck connection; 4. Cover; 5. Rotating shaft; 6. Servo motor; 7. Core mold; 8. Positioning cylinder; 9. Third drive member; 10. Rolling wheel; 11. Flange ring. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0020] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] The following combination Figure 1 and Figure 2 Specific embodiments of the present invention are described in detail. Example 1

[0023] This embodiment provides a metal gas filter canister in the shape of a curved tank, comprising a tank body 1 and a can cover 2. The tank body 1 is a barrel-shaped structure, the barrel mouth of the tank body 1 is connected to the can cover 2, a hole is opened in the center of the barrel bottom of the tank body 1, and the hole is convex outward to form a tank neck connection port 3, the tank neck connection port 3 is used to connect to the cover body 4, and the barrel bottom of the tank body 1 is set to an inwardly concave curved surface so that it can fit the cover body 4.

[0024] It is easy to understand that the can cover 2 has an air vent as an air inlet, and the can neck connection port 3 is connected to the mask body 4 as an air outlet. When the wearer inhales, the outside air passes through the can cover 2 and is purified by the gas filter layer and the smoke filter layer in the gas filter canister before entering the mask body 4 through the air outlet for inhalation by the wearer.

[0025] It should be noted that, since the bottom of the tank body 1 has a central opening, the aforementioned arc surface is annular as a whole.

[0026] Specifically, the mouth of the tank body 1 extends outward to form a flange ring 11 to facilitate connection with the tank cover 2. Example 2

[0027] This embodiment provides a processing device for a metal gas filter canister in the shape of a curved tank, comprising a frame, a rotating shaft 5, a core mold 7, a positioning assembly, and a rolling assembly.

[0028] Among them, the rack mainly provides hardware support for other components.

[0029] Specifically, the rack may be of a frame type, a box type, or other common structures.

[0030] The rotating shaft 5 is rotatably mounted on the frame and is connected to a first driving member for driving the rotating shaft 5. The rotating shaft 5 is arranged on the left and right sides.

[0031] Specifically, the rotational installation of the rotating shaft 5 on the frame is not limited, and the rotational installation can be achieved, for example, by bearings, clearance sleeves or other common rotation support methods.

[0032] Specifically, the first driving element in this embodiment is a servo motor 6, and the output shaft of the servo motor 6 directly serves as the rotating shaft 5. In other embodiments, the rotating shaft 5 is also connected to the output shaft of the servo motor 6 through a transmission connection, and a combination of the servo motor 6 and a gearbox can also be used. Other rotating power elements such as a rotary cylinder can also be used.

[0033] Among them, the core mold 7 is a cylindrical structure and is fixedly sleeved on the rotating shaft 5. The outer wall of the core mold 7 is used to be sleeved on the barrel side wall of the metal filter canister to be processed. The left end face of the core mold 7 is set to be a concave arc surface to form the barrel bottom of the tank body 1 of the metal filter canister to be processed, and the left end of the inner wall of the core mold 7 is flush with the left end of the rotating shaft 5 or extends outward from the left end of the rotating shaft 5.

[0034] Specifically, the core mold 7 can be fitted onto the rotating shaft 5 through an interference fit, or can be fixed by a key or other structure.

[0035] It is easy to understand that the so-called "the left end of the inner wall of the core mold 7 is flush with the left end of the rotating shaft 5 or extends outward from the left end of the rotating shaft 5" is intended to avoid the rotating shaft 5 extending outward from the core mold 7 and interfering with the rolling action.

[0036] Among them, the positioning assembly includes a second driving member and a positioning cylinder 8. The second driving member is installed on the frame and is used to output linear motion in the left and right directions. The positioning cylinder 8 is used to be fixedly sleeved on the neck connection port 3 of the metal filter canister to be processed. The positioning cylinder 8 is rotatably installed on the output end of the second driving member and is always coaxial with the rotating shaft 5.

[0037] It is easy to understand that the reason why the positioning cylinder 8 is driven to move left and right by the second driving member is that as the rolling action proceeds, the inner side of the bottom of the canister will gradually concave to the right, and the greater the degree of concavity is, if the positioning cylinder 8 is kept in a fixed position, it is very likely to cause the neck connection port 3 of the canister and the bottom of the barrel to tear, causing structural damage, so the positioning cylinder 8 needs to be synchronously controlled to move to the right during rolling to compensate for the aforementioned distance change; the reason why the positioning cylinder 8 needs to be rotatably installed at the output end of the second driving member is because the positioning cylinder 8 is fixedly sleeved on the neck connection port 3 of the canister when in use, and the canister rotates with the core mold 7 and the rotating shaft 5, so the positioning cylinder 8 will also rotate; the reason why the positioning cylinder 8 is fixed on the neck connection port 3 of the canister is to avoid wear between the positioning cylinder 8 and the neck connection port 3.

[0038] Specifically, the second driving member can be a linear power element with high precision and strong controllability, such as a linear motor and an electric push rod.

[0039] Specifically, when the tank neck connection port 3 is provided with an external thread, the positioning tube 8 can be provided with an internal thread and directly screwed onto the tank neck connection port 3 to achieve relative fixation; when the tank neck connection port 3 and the cover body 4 are connected in other ways, the positioning tube 8 can be designed to be adaptable to the shape of the tank neck connection port 3, such as interference fit, snap connection, etc., as long as the two can be relatively fixed.

[0040] Specifically, the rotatable installation of the positioning cylinder 8 on the output end of the second driving member can be achieved through a bearing or a clearance sleeve.

[0041] It is easy to understand that the so-called "always coaxial with the rotation axis 5" requires two conditions to be met: first, the axis of the positioning cylinder 8 in the initial position is coaxial with the rotation axis 5; second, the rotation axis of the positioning cylinder 8 at the output end of the second driving member is coaxial with the rotation axis 5. In this way, the coaxial state of the positioning cylinder 8 and the rotation axis 5 can be maintained.

[0042] Among them, the rolling assembly includes a third driving member 9 and a rolling wheel 10. The third driving member 9 is installed on the frame and is used to output linear motion in the radial direction and linear motion in the left and right directions. The rolling wheel 10 is used to roll the bottom of the tank body 1 of the metal filter canister to be processed. The rolling wheel 10 is installed at the output end of the third driving member 9 and is used to roll in the radial direction.

[0043] Specifically, the rolling wheel 10 is a flexible wheel to avoid scratches on the bottom of the tank body 1 due to rigid contact.

[0044] It should be noted that, since the rotating parts such as the rotating shaft 5, the core mold 7 and the positioning cylinder 8 in this device are all coaxially arranged, that is, the axial and radial directions are consistent, the aforementioned "radial direction" is unambiguous.

[0045] Specifically, the third drive element 9 comprises a hydraulic cylinder for outputting lateral linear motion and a linear actuator for outputting radial linear motion. The fixed portion of the linear actuator is fixed to the frame, the cylinder body of the hydraulic cylinder is fixed to the output portion of the linear actuator, and the rolling wheel 10 is mounted on the end of the hydraulic cylinder's piston rod. During operation, the output portion of the linear actuator moves radially, driving the hydraulic cylinder and rolling wheel 10 to move radially as a whole. The hydraulic cylinder's piston rod moves laterally, providing stable pressure on the rolling wheel 10 to complete the rolling process.

[0046] More specifically, the linear power member can be a linear motor, an electric push rod or other linear power elements.

[0047] It should be noted that the left and right movement of the rolling wheel 10 is mainly used to provide stable pressure to deform the bottom of the can body 1, the left end face of the core mold 7 is used to limit the extreme position of the deformation of the bottom of the can body 1, and the rotation of the rotating shaft 5 is mainly coordinated with the radial movement of the rolling wheel 10 to achieve deformation within the entire area of ​​the bottom of the can.

[0048] The working principle of the processing device of the cambered can-shaped metal filter can of the embodiment is as follows: First, the can body 1 is formed into a flat barrel bottom shape, then the can body 1 is sleeved and fixed on the core mold 7, the positioning cylinder 8 is fixed on the can neck connecting port 3, the barrel bottom of the can body 1 is ensured not to be inclined during the deformation process, and the barrel bottom of the can body 1 does not bend and deform under the condition that no external load force is applied; the barrel bottom of the can body 1 starts to elastically bend and deform by the roller pressing wheel 10 driven by the hydraulic cylinder to apply a rightward pressure to the barrel bottom of the can body 1, the barrel bottom of the can body 1 starts to elastically bend and deform, the bending curvature of the barrel bottom of the can body 1 gradually increases with the increase of the roller pressing pressure, and when the roller pressing pressure exceeds the yield strength of the metal material, the bending deformation of the barrel bottom starts to change from the elastic bending deformation to the elastic-plastic bending deformation; the core mold 7 and the can body 1 are rotated and moved by the servo motor 6, the deformation of the barrel bottom of the can body 1 gradually accumulates, and the plastic bending deformation of the entire end surface is generated; the elastic deformation of the barrel bottom of the can body 1 is restored by unloading the external force, a part of the stress and strain is released, and the final plastic deformation of the barrel bottom of the can body 1 is generated until the rebounding is completed, and the cambered surface of the can body 1 is formed.

[0049] It should be noted that if the cambered surface is formed by using the stamping process, an arc degree forming process needs to be added, and the stamping is completed by the stamping cooperation of the upper die convex surface and the lower die concave surface. However, since the can neck connecting port 3 of the filter can is a convex structure, the cambered surface is easily deformed when the upper and lower die stamping process is used for cambered surface forming, and the can neck connecting port 3 is inclined, twisted and cracked. Therefore, the die stamping cambered surface forming process is only suitable for flat panel structures and is not suitable for the filter can body 1 with the convex can neck connecting port 3. Embodiment 3

[0050] The embodiment provides a gas mask, which comprises a mask body 4, the outer surface of the mask body 4 is convex, and the cambered can-shaped metal filter can is connected to the mask body 4 through the can neck connecting port 3, and the barrel bottom of the can body 1 is attached to the outer surface of the mask body 4.

[0051] Compared with the prior art, the gas mask has the advantages that the structure is simple, the barrel bottom structure of the can body 1 of the metal filter can is only changed, the dynamic protection performance, the dynamic air tightness, the field of view and the sighting performance of the gas mask are improved while the reliability of the filter can is ensured, the forming process is simple, the cambered surface forming of the metal filter can can be realized by using the roller pressing technology, and the gas mask technology development has a positive effect.

[0052] The above is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.

Claims

1. A metal gas filter canister with a curved surface, comprising a canister (1) and a canister cover (2), wherein the canister (1) is a barrel-shaped structure, the barrel mouth of the canister (1) is connected to the canister cover (2), the barrel bottom center of the canister (1) is opened and the hole is convex outward to form a canister neck connection opening (3), the canister neck connection opening (3) is used to connect to the cover (4), and is characterized in that: The bottom of the tank body (1) is configured as a concave arc surface so as to fit the cover body (4).

2. A processing device for a curved tank-shaped metal gas filter canister, characterized in that: include: frame; A rotating shaft (5) is rotatably mounted on the frame and connected to a first driving member for driving the rotating shaft (5), wherein the rotating shaft (5) is arranged left and right; The core mold (7) is a cylindrical structure and is fixedly sleeved on the rotating shaft (5). The outer side wall of the core mold (7) is used to be sleeved inside the barrel side wall of the metal gas filter canister to be processed. The left end face of the core mold (7) is set as an inwardly concave arc surface to form the barrel bottom of the tank body (1) of the metal gas filter canister to be processed, and the left end of the inner side wall of the core mold (7) is flush with the left end of the rotating shaft (5) or extends outward from the left end of the rotating shaft (5); A positioning assembly, comprising a second driving member and a positioning cylinder (8), wherein the second driving member is mounted on the frame and is used to output a linear motion in the left and right directions, the positioning cylinder (8) is used to be fixedly sleeved on the tank neck connection port (3) of the metal gas filter canister to be processed, and the positioning cylinder (8) is rotatably mounted on the output end of the second driving member and is always coaxial with the rotating shaft (5); A rolling assembly comprises a third driving member (9) and a rolling wheel (10), wherein the third driving member (9) is mounted on the frame and is used to output linear motion in the radial direction and linear motion in the left and right directions, and the rolling wheel (10) is used to roll the bottom of the tank body (1) of the metal filter canister to be processed, and the rolling wheel (10) is mounted on the output end of the third driving member (9) and is used to roll in the radial direction.

3. The processing device for arc-shaped metal canister according to claim 2, characterized in that: The first driving member is a servo motor (6), and the rotating shaft (5) is drivingly connected to the output shaft of the servo motor (6), or the output shaft of the servo motor (6) directly serves as the rotating shaft (5).

4. The processing device for arc-shaped metal canister according to claim 2, characterized in that: The rolling wheel (10) is a flexible wheel.

5. The processing device for arc-shaped metal canister according to claim 2, characterized in that: The third driving member (9) includes a hydraulic cylinder for outputting linear motion in the left and right directions and a linear power member for outputting radial linear motion, the fixed portion of the linear power member is fixed on the frame, the cylinder body of the hydraulic cylinder is fixed on the output portion of the linear power member, and the roller (10) is installed on the end of the piston rod of the hydraulic cylinder.

6. A gas mask, comprising a mask body (4), wherein the outer surface of the mask body (4) is convex, characterized in that: Also includes: The arc-shaped metal canister of claim 1 is connected to the cover (4) via the can neck connection port (3), and the bottom of the canister (1) fits the outer surface of the cover (4).

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