Bottle opening thread machining equipment for fire extinguisher manufacturing

Abstract

The invention discloses bottleneck thread machining equipment for fire extinguisher manufacturing, and relates to the technical field of thread machining. The bottleneck thread machining equipment comprises a machining table, an outer clamping piece and an inner supporting piece; the outer clamping piece comprises a clamping table, a chuck and a rotating head, the rotating head connected with the motor is arranged on the clamping table, and the chuck is installed on the rotating head; the inner supporting piece comprises a main rod body, a push rod, a connecting rod, a push ring, a fixing cylinder and a fixing rod. The push rod is unfolded and abuts against the inner wall and the outer wall of the fire extinguisher bottle body with clamping jaws of the chuck. Through the cooperative action of the outer clamping piece and the inner supporting piece, the problem that the thin-wall metal bottle opening is elastically or plastically deformed due to radial clamping force is avoided. The partition assembly synchronously rotates and unfolds to form a complete circular plate, in the thread turning process, a physical partition barrier is automatically formed, when a tool bit retracts in the radial direction, high-pressure gas injection is automatically triggered, tiny chippings remaining in a thread tooth groove are removed, and the situation that the machined surface is scratched by the chippings or the next cutting is interfered by the chippings is avoided.

Description

Technical Field

[0001] This invention relates to the field of thread processing technology, and in particular to a device for processing the bottle neck thread of a fire extinguisher. Background Technology

[0002] As a common fire-fighting device, fire extinguishers require high-precision threads machined into their bottle necks to ensure a reliable sealing connection with the valve, guaranteeing the extinguisher's pressure resistance and long-term sealing performance. The quality of the thread machining directly affects the safety and lifespan of the fire extinguisher, making it a critical process in this manufacturing field.

[0003] Currently, traditional lathes or general-purpose tapping equipment are commonly used for threading fire extinguisher bottle necks. These devices typically clamp the workpiece radially directly with a mechanical chuck, and the clamping mechanism is mostly a rigid design. Since fire extinguisher bottle necks are mostly thin-walled metal structures, rigid clamping can lead to concentrated clamping force, causing localized deformation of the bottle neck. Therefore, how to balance clamping stability, processing adaptability, and efficiency when performing high-precision threading on thin-walled bottle necks has become a noteworthy technical problem in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a device for machining the threaded neck of a fire extinguisher bottle. This device, through the coordinated action of the outer clamping member and the inner support member, avoids the problem of elastic or plastic deformation of the thin-walled metal bottle neck caused by radial clamping force. The partition assembly rotates and unfolds synchronously into a complete circular plate, automatically forming a physical barrier during thread turning. When the cutting head retracts radially, it automatically triggers a high-pressure gas jet to remove fine debris remaining in the thread grooves, thus preventing scratches on the machined surface or interference with the next cut.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for machining the thread of a fire extinguisher bottle neck, comprising: A processing table, on which a movable frame is installed to connect with the cutting head; The external clamping component includes a clamping platform, a chuck, and a rotating head. The clamping platform is equipped with a rotating head connected to a motor, and the rotating head is equipped with a chuck. The chuck is used to clamp the outer wall of the fire extinguisher bottle and drives the fire extinguisher bottle to rotate through the rotating head. The internal support component includes a main rod, a push rod, a connecting rod, a push ring, a fixed cylinder, and a fixed rod. One end of the fixed rod passes through the main rod and connects to the fixed cylinder. A push rod corresponding to the number of jaws of the chuck is hinged to the port of the fixed cylinder. A spiral groove is provided on the main rod. The push ring is sleeved on the main rod. A sliding groove on the outer circumference of the push ring is engaged by a slider on the inner wall of the fixed cylinder. Several connecting rods hinged to the outside of the push ring are movably connected to the push rod. The push ring is driven to reciprocate along the main rod by the rotation of the main rod. This is used to push the push rod to unfold or retract. When the push rod unfolds, it abuts against the inner and outer walls of the fire extinguisher bottle, respectively, with the jaws of the chuck pressing against the outer wall of the fire extinguisher bottle.

[0006] As an optional implementation, the processing table is provided with a movable frame connected to the fixed rod, and the main rod is connected to the reduction motor on the movable frame.

[0007] As an optional implementation, the fixed cylinder is provided with a number of strip grooves, the number of which corresponds to the number of connecting rods, and the strip grooves allow the connecting rods to pass through.

[0008] As an optional implementation, the ports of the push rod and the claw that contact the fire extinguisher bottle are covered with elastic bushings.

[0009] As an optional implementation, the inner wall of the push ring is also provided with a slide rod that engages with the spiral groove. The spiral groove rotates clockwise or counterclockwise to push the slide rod and the push ring to move back and forth.

[0010] As an optional implementation, the main rod and the fixed cylinder are also provided with a partition assembly for sealing the mouth of the fire extinguisher bottle. The partition assembly includes sealing plate one, sealing plate two, sealing plate three, sealing plate four, baffle and stop block. Sealing plate one, sealing plate two, sealing plate three and sealing plate four are all provided with rings. The ring of sealing plate one is fixed to the main rod, and the rings of sealing plate two, sealing plate three and sealing plate four rotate around the fixed cylinder.

[0011] As an optional implementation, the sealing plate 1, sealing plate 2, sealing plate 3 and sealing plate 4 are all quarter-circular structures of the same size. The upper and lower surfaces of both sides of sealing plate 2 and sealing plate 3 are fixed with baffles and blocks. The edge of sealing plate 1 is fixed with a block, and the edge of sealing plate 4 is fixed with a baffle. By rotating sealing plate 1, the blocks slide in the arc groove, causing sealing plate 2, sealing plate 3 and sealing plate 4 to rotate, unfold / fold.

[0012] As an optional implementation, the circular plate formed by the unfolded sealing plate one, sealing plate two, sealing plate three and sealing plate four is larger than the size of the fire extinguisher bottle mouth, and the circular plate is used to separate the fire extinguisher bottle mouth and the bottle body.

[0013] As an optional implementation, the cross-section of the stop block is "T" shaped, and the arc groove is used to lock the stop block.

[0014] As an optional implementation, the sealing plate is provided with an air port, and the air pump on the moving frame is connected to the air port through the airflow channel on the main rod.

[0015] The technical effects and advantages of this invention are as follows: 1. Through the coordinated action of the outer clamping component and the inner support component, synchronous and opposing clamping of the inner and outer walls of the fire extinguisher bottle is achieved. The push rod of the inner support component and the clamping point of the claw of the outer clamping component correspond one-to-one, forming a balance of internal and external forces. This transforms the concentrated stress of traditional unidirectional rigid clamping into a uniformly distributed balanced force system, fundamentally avoiding the problem of elastic or plastic deformation of the thin-walled metal bottle mouth caused by radial clamping force. The bottle body geometry remains stable during processing, thereby ensuring that the machined internal thread has a uniform pitch, complete tooth profile, and accurate dimensions.

[0016] 2. The automatically deployable / folding partition assembly consists of four interconnected fan-shaped sealing plates. This assembly operates synchronously with the internal support mechanism: when the push rod deploys for internal support, the partition assembly simultaneously rotates and unfolds into a complete circular plate, tightly covering the bottle opening. During thread cutting, this automatically formed physical barrier effectively prevents metal fragments generated during cutting from splashing or falling into the fire extinguisher bottle. This eliminates the need for additional cleaning procedures and improves the pass rate and efficiency of mass production.

[0017] 3. The chip removal action is intelligently linked with the cutter head movement. When the cutter head retracts radially, it automatically triggers high-pressure gas jets to remove the fine chips remaining in the thread grooves. This avoids chips scratching the machined surface or interfering with the next cut, resulting in a smoother, burr-free thread surface, reducing chip adhesion and repeated cutting, reducing abnormal tool wear, and achieving full automation of the process. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a diagram showing the internal structure of the fire extinguisher's thread machining according to the present invention; Figure 3 This is a partial structural diagram of the movable frame connected to the main rod and the fixed rod of the present invention; Figure 4 This is a diagram showing the unfolded support structure of the inner support member of the present invention; Figure 5 This is a diagram of the shrinkage structure of the partition component of the present invention; Figure 6 This is an unfolded structural diagram of the partition component of the present invention; Figure 7 This is a structural diagram of the partition component of the present invention; Figure 8 This is a partial separation view of the partition component of the present invention; Figure 9The following are structural diagrams of sealing plate two, sealing plate three, and sealing plate four of the present invention; Figure 10 This is an unfolded structural diagram of the partition component of the present invention; Figure 11 For the present invention Figure 10 Enlarged view of point B; Figure 12 This is a structural diagram of Embodiment 2 of the present invention.

[0019] In the picture: 1. Machining table; 2. Moving frame; 3. External clamping component; 31. Clamping table; 32. Chuck; 33. Rotating head; 4. Internal support component; 41. Main rod body; 411. Spiral groove; 42. Push rod; 43. Connecting rod; 44. Push ring; 45. Fixed cylinder; 451. Strip groove; 452. Moving cylinder; 453. Fixed cylinder; 46. Fixed rod; 461. Limiting rod; 5. Partition assembly; 51. Sealing plate one; 52. Sealing plate two; 53. Sealing plate three; 54. Sealing plate four; 55. Baffle; 56. Stop block; 57. Ring body; 58. Arc groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, see Figures 1-11 A device for machining the threads of a fire extinguisher bottle neck, comprising: The processing table 1 is equipped with a movable frame 2 connected to the cutting head, an external clamping component 3 for holding the outside of the fire extinguisher, and an internal support component 4 for supporting the inside of the fire extinguisher bottle. The movable frame 2 can drive the cutting head to reciprocate and move up and down. The external clamping component 3 and the internal support component 4 clamp the fire extinguisher bottle inside and out, thereby avoiding the problem that the pressure concentration during rigid clamping can easily cause elastic deformation of the fire extinguisher bottle, resulting in deviation between the actual thread size and the design parameters, which directly affects the fitting accuracy with the bottle valve and reduces the sealing performance. At the same time, the movable frame 2 is used to install and control the feed and lifting movement of the cutting head, and has multi-axis adjustment capability to adapt to the processing needs of different bottle mouth specifications.

[0022] The external clamping component 3 includes a clamping platform 31, a chuck 32, and a rotating head 33. The clamping platform 31 is provided with a rotating head 33 connected to a motor. The rotating head 33 is equipped with a chuck 32. The chuck 32 is used to clamp the outer wall of the fire extinguisher bottle and drives the fire extinguisher bottle to rotate through the rotating head 33. The jaws on the chuck 32 move in opposite directions, placing the fire extinguisher bottle between the jaws. As the jaws move towards each other, they slowly clamp the fire extinguisher bottle. The jaws of the chuck 32 adopt a synchronous radial movement design to ensure that the clamping force is evenly applied to the outer wall of the fire extinguisher bottle.

[0023] The inner support component 4 includes a main rod 41, a push rod 42, a connecting rod 43, a push ring 44, a fixed cylinder 45, and a fixed rod 46. One end of the fixed rod 46 passes through the main rod 41 and connects to the fixed cylinder 45. A movable frame 2 connected to the fixed rod 46 is provided on the processing table 1, and the main rod 41 is connected to the reduction motor on the movable frame 2. The position of the inner support component 4 can be adjusted through the movable frame 2.

[0024] The port of the fixed cylinder 45 is hinged to a push rod 42 corresponding to the number of jaws of the chuck 32. A spiral groove 411 is provided on the main rod body 41. The push ring 44 is sleeved on the main rod body 41. Several connecting rods 43, which are hinged to the outer side of the push ring 44, are movably connected to the push rod 42. The push ring 44 is driven to reciprocate along the main rod body 41 by the rotation of the main rod body 41. The connecting rods 43 push the push rod 42 to unfold or retract. When the push rod 42 unfolds, it and the jaws of the chuck 32 abut against the inner and outer walls of the fire extinguisher bottle respectively. A sliding rod is also provided on the inner wall of the push ring 44, which is engaged with the spiral groove 411. The spiral groove 411 rotates clockwise or counterclockwise to push the sliding rod and the push ring 44 to reciprocate.

[0025] Specifically, the fixed rod 46 is connected to the liftable support seat on the movable frame 2. The fixed rod 46 can rotate around the support seat. The support seat is also equipped with a clamping block that can clamp the fixed rod 46. Before clamping, the inner support 4 is inserted into the bottle body from the bottle opening. At this time, the main rod body 41 is driven to rotate by the reduction motor. During the rotation, the main rod body 41 drives the push ring 44 to move towards the push rod 42. As the push ring 44 moves, the push rod 42 is pushed to unfold through the connecting rod 43. When the push rod 42 unfolds, it will contact the inner wall of the fire extinguisher bottle. The extension and retraction of the chuck 32 and the unfolding and retraction of the push rod 42 can be performed synchronously. The position where the chuck contacts the outer wall of the bottle body is symmetrical to the position where the push rod 42 contacts the inner wall of the bottle body, thereby achieving a balance between the working forces of the two to avoid damage to the bottle body.

[0026] The fixed cylinder 45 is provided with several strip grooves 451, the number of which corresponds to the number of connecting rods 43. The strip grooves 451 allow the connecting rods 43 to pass through, and the connecting rods 43 can move along the strip grooves 451 during both expansion and contraction. The ports of the push rod 42 and the claw that contact the fire extinguisher bottle body are covered with elastic bushings. In order to protect the fire extinguisher bottle body from damage, the elastic bushings prevent direct metal contact with the bottle body. The elastic bushings, such as polyurethane or rubber, increase friction to prevent slippage and prevent direct metal contact from scratching the bottle surface. At the same time, during the threading process of the fire extinguisher bottle mouth, the fire extinguisher needs to rotate, and the inner support 4 also needs to rotate synchronously with the fire extinguisher bottle body. Therefore, a rotatable ring is fitted on the outer wall of the push ring 44. The push ring 44 is penetrated by the limiting rod 461 on the fixed rod 46, and the push ring 44 moves back and forth along the limiting rod 461.

[0027] Simultaneous execution of internal and external clamping: The motor of the external clamping start-up drive rotating head 33 starts, and the jaws of the chuck 32 retract inward synchronously, gently contacting and clamping the outer wall of the bottle. The inner support unfolds, and the geared motor drives the main rod 41 to rotate. The surface of the main rod 41 is provided with a spiral groove 411, and the sliding rod of the inner wall of the push ring 44 is embedded in the groove. When the main rod 41 rotates, the spiral groove 411 pushes the sliding rod, causing the push ring 44 to move along the axial direction of the main rod 41 towards the bottom of the bottle. The push rod 42 unfolds, and when the push ring 44 moves outward, the connecting rod 43 hinged to its outer side moves accordingly. The other end of the connecting rod 43 is hinged to the push rod 42, thereby pushing the push rod 42 outward, so that the elastic bushing at its end tightly abuts against the inner wall of the bottle. The unfolded position of the push rod 42 corresponds one-to-one with the clamping point of the jaws of the external chuck 32, forming a balance of internal and external forces, effectively offsetting the radial clamping force and preventing deformation of the thin-walled bottle.

[0028] After push rod 42 is fully extended, the clamping block on the moving frame 2 locks the fixed rod 46, ensuring the stability of the inner support 4 during processing. At this time, the bottle body is firmly clamped between the inner and outer clamps and the force is even. The rotating head 33 drives the bottle body to rotate at a uniform speed, and the moving frame 2 controls the cutter head to perform axial feed and radial cutting according to preset thread parameters, such as pitch and thread angle, to process high-precision internal threads on the inner wall of the bottle mouth. Because the bottle body is internally supported, processing vibration and deformation are avoided, and the thread dimensional accuracy is improved.

[0029] The partition component 5 is used to isolate the bottle opening from the inside of the bottle body during the processing to prevent metal fragments from falling into the bottle and affecting the future use of the fire extinguisher. The main rod 41 and the fixed cylinder 45 are also equipped with a partition assembly 5 for sealing the mouth of the fire extinguisher bottle. The partition assembly 5 includes a sealing plate 51, a sealing plate 52, a sealing plate 53, a sealing plate 54, a baffle 55, and a stop block 56. Each of the sealing plates 51, 52, 53, and 54 is provided with an annular body 57. The annular body 57 of the sealing plate 51 is fixed to the main rod 41. The annular bodies 57 of the sealing plates 52, 53, and 54 rotate around the fixed cylinder 45. The fixed cylinder 45 includes a fixed cylinder 453 and a movable cylinder 452. The movable cylinder 452 has a strip groove 451. The fixed cylinder 453 is movably connected to the movable cylinder 452. The plate inside the fixed cylinder 453 is connected to the limiting rod 461. The annular bodies 57 of the sealing plates 52, 53, and 54 rotate around the fixed cylinder 453.

[0030] Sealing plate 1 51, sealing plate 2 52, sealing plate 3 53, and sealing plate 4 54 are all quarter-circular structures of the same size. The outer arc edges of sealing plate 2 52, sealing plate 3 53, and sealing plate 4 54 are all fixed with gradually increasing arc-shaped sealing edges. When the partition component 5 unfolds into a circle, the arc-shaped sealing edges of sealing plate 2 52, sealing plate 3 53, and sealing plate 4 54 seal the gap between the unfolded part and the bottle mouth. The upper and lower surfaces of both sides of sealing plate 2 52 and sealing plate 3 53 are fixed with baffles 55 and blocks 56. The edge of sealing plate 1 51 is fixed with blocks 56, and the edge of sealing plate 4 54 is fixed with baffles 55. By rotating sealing plate 1 51, the blocks 56 slide in the arc groove 58, causing sealing plate 2 52, sealing plate 3 53, and sealing plate 4 54 to rotate, unfold, or fold.

[0031] The circular plate formed by the unfolded sealing plates 51, 52, 53, and 54 is larger than the size of the fire extinguisher bottle opening. This circular plate is used to separate the fire extinguisher bottle opening from the bottle body. The stop block 56 has a "T" shaped cross-section, and the arc groove 58 is used to hold the stop block 56 in place. The stop block 56 slides along the arc groove 58 and will not detach from it.

[0032] In the initial folded state, when the equipment is in standby mode, the four sealing plates are folded together and surround the outer perimeter of the fixed cylinder 45, without occupying too much radial space, which facilitates the entry and exit of the inner support 4 into and out of the bottle opening.

[0033] The main rod 41 rotates, driving the push ring 44 to move and unfold the push rod 42, while simultaneously causing the sealing plate 51 fixed thereon to rotate. The stop 56 of the sealing plate 51 is embedded in the arc groove 58 of the sealing plate 52 and pushes its baffle 55, thereby causing the sealing plate 52 to rotate and unfold around the fixed cylinder 45. The movement of the sealing plate 52 is transmitted to the sealing plate 3 53 and sealing plate 4 54 in sequence through the stop 56 and baffle 55 mechanism on its other side.

[0034] Completely sealed, when the push rod 42 is fully extended and presses against the inner wall of the bottle, the four sealing plates also rotate and unfold to the same plane, splicing together to form a complete circular plate. The diameter of the circular plate is slightly larger than the inner diameter of the fire extinguisher bottle mouth, which can tightly cover the bottle mouth. In the cutting area, the inner side of the bottle mouth and the inside of the bottle body are physically isolated.

[0035] After processing, the main rod 41 is folded. After processing is completed, the main rod 41 is reversed, the push ring 44 moves back, the push rod 42 retracts, and the sealing plate 51 rotates in the opposite direction. Through the linkage mechanism, each sealing plate is pulled back in sequence to restore the folded state, so that the inner support 4 can be removed from the bottle.

[0036] Specifically, during the rotation of the main rod 41, the push ring 44 moves along the limiting rod and slowly unfolds the push rod 42 to press against the body of the fire extinguisher. At the same time, the sealing plate 1 51 rotates, and the stop block 56 slides along the arc groove 58 of the sealing plate 2 52 and contacts the baffle 55 of the sealing plate 2 52, thereby driving the sealing plate 2 52 to rotate. Similarly, the sealing plate 2 52 drives the sealing plate 3 53 to rotate until the stop block 56 of the sealing plate 3 53 slides along the arc groove 58 of the sealing plate 4 54 and contacts the baffle 55 of the sealing plate 4 54. At this time, the sealing plate on the edge of the sealing plate 1 51 contacts the edge of the sealing plate 4 54. The sealing plates 1 51, 2 52, 3 53 and 4 54 unfold to form a circular plate that separates the mouth and body of the fire extinguisher. At the same time, the push rod 42 unfolds and presses against the body of the fire extinguisher. During the rotation of the body, the blade moves to process the internal thread on the inside of the mouth. At the same time, the presence of the circular plate prevents debris from falling into the body of the extinguisher.

[0037] Example 2, see Figure 9 The difference between this embodiment and embodiment two lies in the sealing plate 51 and the main rod 41. In this embodiment, the sealing plate 51 is provided with an air port and further integrates a pneumatic debris cleaning system, which is used to quickly remove accumulated debris in the bottle mouth area during the processing interval to ensure the surface finish of the thread. The air pump on the moving frame 2 is connected to the air port through the airflow channel on the main rod 41. The main rod 41 is provided with a trigger to control the air pump. During the cutting head movement processing, when the cutting head moves towards the inner wall of the bottle mouth, it will contact the inner wall of the bottle mouth, thereby processing the internal thread in the inner wall of the bottle mouth. Since multiple processing is required to form a complete internal thread, the cutting head will continuously move laterally and radially along the bottle mouth during the thread processing process. When it moves radially along the bottle mouth, it indicates that the cutting head is in a disengaged state from the bottle mouth. At this time, air can be blown out of the metal debris in the bottle mouth.

[0038] Cleaning process: In multi-pass thread cutting, after each radial entry and turning of a section of thread, the cutter head needs to radially withdraw from the bottle wall and move axially to prepare for the next cut. When the cutter head radially withdraws to a safe position, its tool holder or slider will contact or sense the trigger on the main body 41. The air pump start-up trigger signal is sent to the control system, and the air pump is started immediately. Compressed gas is ejected at high speed from the air port of the sealing plate 51 through the pipeline and the airflow channel inside the main body 41. Since the partition component 5 has been unfolded to form a circular plate at this time, and the sealing plate 51 is usually rotated and positioned at the bottom of the bottle mouth, the debris accumulates here due to gravity. The high-speed airflow can concentrate and sweep away the metal debris accumulated at the bottom of the bottle mouth and in the thread profile, blowing it away from the processing area. Before the cutter head completes its axial movement and prepares for the next radial entry, it will leave the trigger, and the air pump will automatically stop working. This process is fast and automatic and does not affect the processing cycle.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for machining the threaded neck of a fire extinguisher, characterized in that, include: A processing table (1) is provided with a movable frame (2) connected to the cutting head. An external clamping component (3) is used to clamp the outside of the fire extinguisher. It is located on the processing table (1) and includes a clamping table (31), a chuck (32) and a rotating head (33). The clamping table (31) is provided with a rotating head (33) connected to a motor. The rotating head (33) is equipped with a chuck (32). The chuck (32) is used to clamp the outer wall of the fire extinguisher and drives the fire extinguisher to rotate through the rotating head (33). An inner support member (4), used to support the inside of the fire extinguisher bottle, is located on the processing table (1) and includes a main rod (41), a push rod (42), a connecting rod (43), a push ring (44), a fixed cylinder (45), and a fixed rod (46). One end of the fixed rod (46) passes through the main rod (41) and connects to the fixed cylinder (45). The port of the fixed cylinder (45) is hinged with a push rod (42) corresponding to the number of jaws of the chuck (32). The main rod (41) A spiral groove (411) is provided on the top, and a push ring (44) is sleeved on the main rod body (41). Several connecting rods (43) hinged on the outer ring of the push ring (44) are movably connected to the push rod (42). The push ring (44) is driven to move back and forth along the main rod body (41) by the rotation of the main rod body (41). The connecting rods (43) push the push rod (42) to unfold or retract. When the push rod (42) unfolds, the chuck (32) and the claws of the chuck (32) respectively abut against the inner and outer walls of the fire extinguisher bottle.

2. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 1, characterized in that, The processing table (1) is provided with a movable frame (2) connected to the fixed rod (46), and the main rod (41) is connected to the reduction motor on the movable frame (2).

3. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 2, characterized in that, The fixed cylinder (45) is provided with a number of strip grooves (451), the number of strip grooves (451) corresponds to the number of connecting rods (43), and the strip grooves (451) allow the connecting rods (43) to pass through.

4. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 3, characterized in that, The push rod (42) and the port of the claw that contact the fire extinguisher bottle are both covered with elastic bushings.

5. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 4, characterized in that, The inner wall of the push ring (44) is also provided with a slide rod that is engaged in the spiral groove (411). The spiral groove (411) rotates clockwise or counterclockwise to push the slide rod and the push ring (44) to move back and forth.

6. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 5, characterized in that, The main rod (41) and the fixed cylinder (45) are also provided with a partition assembly (5) for sealing the mouth of the fire extinguisher bottle. The partition assembly (5) includes a sealing plate one (51), a sealing plate two (52), a sealing plate three (53), a sealing plate four (54), a baffle (55), and a stop block (56). A ring body (57) is provided on the sealing plate one (51), the sealing plate two (52), the sealing plate three (53), and the sealing plate four (54). The ring body (57) of the sealing plate one (51) is fixed on the main rod (41), and the ring body (57) of the sealing plate two (52), the sealing plate three (53), and the sealing plate four (54) rotates around the fixed cylinder (45).

7. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 6, characterized in that, The sealing plate 1 (51), sealing plate 2 (52), sealing plate 3 (53) and sealing plate 4 (54) are all quarter-circular structures of the same size. The upper and lower sides of the two sides of sealing plate 2 (52) and sealing plate 3 (53) are fixed with baffles (55) and blocks (56). The edge of sealing plate 1 (51) is fixed with blocks (56) and the edge of sealing plate 4 (54) is fixed with baffles (55). By rotating sealing plate 1 (51), the blocks (56) slide in the arc groove (58) to drive sealing plate 2 (52), sealing plate 3 (53) and sealing plate 4 (54) to rotate, unfold / fold.

8. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 7, characterized in that, The circular plate formed by the unfolded sealing plate one (51), sealing plate two (52), sealing plate three (53) and sealing plate four (54) is larger than the size of the fire extinguisher bottle mouth. This circular plate is used to separate the fire extinguisher bottle mouth and the bottle body.

9. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 8, characterized in that, The cross-section of the stop (56) is "T" shaped, and the arc groove (58) is used to hold the stop (56).

10. The equipment for processing the bottle neck thread of a fire extinguisher according to claim 9, characterized in that, An air inlet is provided on the sealing plate (51), and the air pump on the moving frame (2) is connected to the air inlet through the airflow channel on the main rod (41).

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