A processing device for a three-piece aerosol can

Abstract

The present application relates to the field of aerosol can processing, in particular to a three-piece aerosol can processing device, comprising a fixed support and a pressing cylinder, the pressing cylinder being arranged on the fixed support, the processing device further comprising a movable support and a plurality of lifting clamps evenly distributed around the movable support, the movable support being arranged on the fixed support and being movable relative to the fixed support along the working direction of the pressing cylinder, each lifting clamp being provided with an extrusion ejector pin, the extrusion direction of the extrusion ejector pin being perpendicular to the pressing direction of the pressing cylinder, and the movable support being provided with a clamping driving assembly for driving all the lifting clamps to open and close synchronously, the valve being lifted by the lifting clamps so as to be pressed horizontally, and the valve being positioned in the lifting clamps by all the extrusion ejector pins, so as to ensure that the valve is coaxial with the can body and the quality of the aerosol can is ensured.

Description

Technical Field

[0001] This invention relates to the field of aerosol can processing, specifically to a processing apparatus for a three-piece aerosol can. Background Technology

[0002] Currently, in the production line of aerosol cans, valve insertion falls under the processing category. The valve insertion process is usually carried out manually or by a single-head valve insertion machine. Manual valve insertion is inefficient, labor-intensive, and costly. If the valve is not coaxial with the can opening and excessive lateral pressure is applied, it may cause damage or jamming. Current straightening devices may not be able to fully straighten the valve if it is too tilted at the can opening, and may not provide sufficient clamping force to stabilize the valve. Alternatively, the valve itself may be tilted and unable to receive clamping force, resulting in inaccurate valve insertion.

[0003] The currently disclosed Chinese patent CN111251245B discloses a dual-head automatic valve insertion device for a rotary multi-can separator. It includes a frame with a rotary table driven by a power unit. The rotary table has several radially spaced grooves for positioning and conveying aerosol cans, arranged according to a graduated rule. Each groove holds at least two aerosol cans. A worktable is positioned above the rotary table, and several workstation holes are formed according to the graduated rule. The key feature is that each workstation hole includes at least two valve insertion workstation holes. A dual-head valve insertion device is installed at each of the two valve insertion workstation holes. The dual-head valve insertion device includes an insertion frame mounted on the top surface of the worktable, with two transition pipes at the bottom of the insertion frame. The transition pipe passes through the valve insertion station hole. Two receiving valve pipes are inclinedly arranged at the top of the can-entry station frame. Two swing pipes are arranged between the transition pipe and the receiving valve pipes. The two swing pipes are connected to the can-entry station frame by a rotating shaft. One end of the rotating shaft extends out of the can-entry station frame and is connected to a cam. The cam is connected to one end of a crank, and the other end of the crank is connected to the piston rod of a cylinder. The cylinder is arranged on the can-entry station frame. The other end of the rotating shaft extends out of the can-entry station frame from the other side and is connected to a swing block. The can-entry station frame is equipped with a limit switch adapted to the swing block, so that the pipe opening of the swing pipe is opposite the receiving valve pipe at the upper limit position and opposite the inlet of the transition pipe at the lower limit position.

[0004] According to the aforementioned patent, the valve chuck of the valve straightening device positions the valve in the axial position of the aerosol can. The cylinder piston rod continues to move downward, and the pressure sleeve further applies downward force to the valve, pressing the valve to the aerosol can opening to complete the valve positioning. However, although this patent combines the downward movement of the cylinder piston rod and the clamping movement of the valve chuck, the clamping force on the valve still cannot be kept stable. There are still cases where the valve is misaligned and cannot be clamped, which leads to valve damage when the cylinder piston rod presses down on the valve. Therefore, there is currently a need for an adjustment mechanism that can keep the valve coaxial with the aerosol can. Summary of the Invention

[0005] To address the problems existing in the current technology, this invention provides a processing device for a three-piece aerosol can. The invention lifts the valve by lifting the clamping plate, so that the valve is pressed down in a horizontal state, and the valve is positioned therein by all the extrusion pins, ensuring that the valve is coaxial with the can body and thus ensuring the quality of the aerosol can.

[0006] To address the problems of existing technologies, this invention provides a processing device for a three-piece aerosol can, including a fixed support and a pressing cylinder for squeezing the valve. The pressing cylinder is mounted on the fixed support, and its working end is directly opposite the valve hole of the can. The processing device also includes a movable support and multiple lifting clamps evenly distributed around the movable support. The movable support is mounted on the fixed support and can move relative to the fixed support along the working direction of the pressing cylinder. Each lifting clamp is provided with a squeezing pin, and the squeezing direction of the squeezing pin is perpendicular to the pressing direction of the pressing cylinder. The movable support is provided with a clamping drive assembly for driving all the lifting clamps to open and close synchronously.

[0007] Preferably, the upper end of the lifting clamp is rotatably connected to the movable support, and the lower end of the lifting clamp has a support platform for supporting the valve, the support surface of the support platform being perpendicular to the clamping surface of the lifting clamp.

[0008] Preferably, an elastic ring is connected between all the lifting clamps, and each lifting clamp has a snap-fit ​​part for fixing the elastic ring. The outer surface of the elastic ring is provided with a sponge layer around it. When all the lifting clamps are in a downward vertical state, the elastic ring is in a normal state.

[0009] Preferably, the compression pin is located at the position of the elastic ring on the lifting clamp. The compression end of the compression pin passes through the surface of the lifting clamp from the outside to the inside and contacts the sponge layer. The compression pin is perpendicular to the surface of the lifting clamp. The lifting clamp has a through hole for the compression pin to pass through. The outer surface of the lifting clamp also has a guide channel for guiding the compression pin. A first spring is fixedly connected between the compression pin and the lifting clamp in the guide channel. A first linear actuator is provided on the outside of the guide channel to drive the compression pin to move. When the first spring is in the normal state, the sponge layer in contact with the compression pin is in the normal state.

[0010] Preferably, the movable support has an integrally connected inner sleeve and an outer sleeve, the fixed support has a movable cavity into which the inner sleeve is inserted, the working end of the pressing cylinder is located in the inner sleeve, the outer sleeve is sleeved on the fixed support, the clamping drive assembly is installed on the outer sleeve, a second spring is fixedly connected between the inner sleeve and the outer sleeve and between the top of the movable support and the bottom of the fixed support, and the fixed support is provided with a second linear actuator for driving the movable support to move. When the second spring is in the normal state, the movable support is in a state close to the fixed support.

[0011] Preferably, the working end of the pressing cylinder is fixedly provided with a rubber sleeve for pressing the valve. The rubber sleeve is slidably disposed in the inner sleeve. A third spring is fixedly connected between the lower end of the rubber sleeve and the bottom of the movable support. When the third spring is in the normal state, the second spring is in the normal state.

[0012] Preferably, the valve has a valve body, which is in the shape of a straight tube, and the rubber sleeve has a socket for inserting the valve body.

[0013] Preferably, the upper end of the lifting clamp has a movable hinge portion, and the edge of the movable support has a fixed hinge portion that is rotatably connected to the movable hinge portion. A hinge shaft is provided between the fixed hinge portion and the movable hinge portion. One end of the hinge shaft is fixedly connected to the movable hinge portion, and the other end of the hinge shaft extends outward through the fixed hinge portion. The extended end of the hinge shaft has an end head with a diameter larger than that between the hinge shafts. A torsion spring sleeved on the hinge shaft is fixedly connected between the end head and the fixed hinge portion. When the torsion spring is in the normal state, the lifting clamp is in a vertical state that remains downward.

[0014] Preferably, the clamping drive assembly is provided with a lifting collar, which is slidably sleeved on the outer sleeve, and a pull rope is fixedly connected between the lower half of each lifting clamp and the lifting collar.

[0015] Preferably, a guide wheel is rotatably connected to the edge of the movable support at the position corresponding to each pull rope, and the end of the pull rope connected to the lifting collar passes around the outside of the guide wheel.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: The present invention lifts the valve by raising the clamping plate, so that the valve is pressed down in a horizontal state. Compared with the existing method of directly clamping the valve for straightening, this improves the accuracy of valve insertion. Furthermore, the valve is positioned in place by all the extrusion pins, ensuring that the valve and the can are coaxial, thus achieving a stable connection between the valve and the can and ensuring the quality of the aerosol can. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a processing device for a three-piece aerosol can.

[0018] Figure 2 This is a partial three-dimensional structural cross-sectional view of a processing device for a three-piece aerosol can.

[0019] Figure 3 This is a front view of a processing device for a three-piece aerosol can.

[0020] Figure 4 yes Figure 3 Plan view at point AA.

[0021] Figure 5 This is a schematic diagram of the lifting clamp of a three-piece aerosol can processing device with the clamp extended outwards.

[0022] Figure 6 This is a schematic diagram of the valve of a three-piece aerosol can processing device, showing the state from being raised to being pressed down.

[0023] Figure 7 yes Figure 4 Enlarged diagram of point B.

[0024] Figure 8 yes Figure 4 Enlarged diagram of point C.

[0025] Figure 9 yes Figure 4 Enlarged diagram of point D.

[0026] Figure 10 yes Figure 3 Enlarged diagram of point E.

[0027] The diagram is labeled as follows: 1. Tank body; 2. Valve; 21. Valve body; 3. Downward-pressing cylinder; 4. Fixed support; 41. Movable cavity; 411. Second spring; 412. Second linear actuator; 5. Movable support; 51. Inner sleeve; 511. Rubber sleeve; 5111. Insertion hole; 512. Third spring; 52. Outer sleeve; 6. Lifting clamp; 61. Support platform; 611. Snap-fit ​​part; 62. Elastic ring; 621. Sponge layer; 63. 631. Movable hinge; 631. Hinge shaft; 6311. End; 632. Torsion spring; 64. Fixed hinge; 7. Pressing pin; 71. Guide channel; 711. First spring; 712. First linear actuator; 8. Clamping drive assembly; 81. Lifting collar; 811. Anti-detachment ring; 812. Fourth spring; 813. Third linear actuator; 82. Pull rope; 821. First connecting part; 822. Second connecting part; 83. Guide wheel. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figures 1-6 As shown, a processing device for a three-piece aerosol can includes a fixed support 4 and a pressing cylinder 3 for squeezing the valve 2. The pressing cylinder 3 is mounted on the fixed support 4, and the working end of the pressing cylinder 3 is directly opposite the valve hole of the can body 1. The processing device also includes a movable support 5 and multiple lifting clamps 6 evenly distributed around the movable support 5. The movable support 5 is mounted on the fixed support 4 and can move relative to the fixed support 4 along the working direction of the pressing cylinder 3. Each lifting clamp 6 is provided with a squeezing pin 7. The squeezing direction of the squeezing pin 7 is perpendicular to the pressing direction of the pressing cylinder 3. The movable support 5 is provided with a clamping drive assembly 8 for driving all the lifting clamps 6 to open and close synchronously.

[0030] During the valve insertion process, tank 1 is conveyed to the area below the pressing cylinder 3 via a conveying device. Valve 2 is inserted into the valve hole of tank 1. At this time, valve 2 is not fixed to tank 1 and is still in an inclined state. To keep valve 2 horizontally pressed into the valve hole, the clamping drive assembly 8 drives all the lifting clamps 6 to clamp valve 2 within them. As the movable support 5 moves relative to the fixed support 4, it moves valve 2 away from tank 1. After valve 2 is lifted, it remains parallel to all the lifting clamps 6. The extrusion pins 7 on the lifting clamping plate 6 push out towards the valve 2, causing the valve 2 to be positioned between all the extrusion pins 7, so that the valve 2 and the tank body 1 remain coaxial. After the valve 2 is lifted to the designated height, the pressing cylinder 3 is activated, pressing down the valve 2. The lifting clamping plate 6 moves downward together with the valve 2 to support it, until the valve 2 is squeezed into the valve hole on the tank body 1, thus completing the valve insertion process. This ensures the accurate insertion of the valve 2, guarantees the sealing between the valve 2 and the tank body 1, and prevents damage to the valve 2.

[0031] See Figures 2-7 As shown, the upper end of the lifting clamp 6 is rotatably connected to the movable support 5, and the lower end of the lifting clamp 6 has a support platform 61 for supporting the valve 2. The support surface of the support platform 61 is perpendicular to the clamping surface of the lifting clamp 6.

[0032] The upper end of the lifting clamp 6 is rotatably connected to the movable support 5, which allows the lifting clamp 6 to open and close on the movable support 5. The support platform 61 at the lower end of the lifting clamp 6 can provide the support required for the valve 2. At the same time, the support surface of the support platform 61 is perpendicular to the clamping surface of the lifting clamp 6, which can ensure that the valve 2 is stably supported. As the movable support 5 moves upward, the valve 2 remains horizontal after being lifted, avoiding the situation where the valve 2 is squeezed in an inclined state, preventing damage to the valve 2, and effectively achieving precise installation between the valve 2 and the tank 1.

[0033] See Figures 2-7 As shown, an elastic ring 62 is connected between all the lifting clamps 6. Each lifting clamp 6 has a snap-fit ​​part 611 for fixing the elastic ring 62. The outer surface of the elastic ring 62 is provided with a sponge layer 621 surrounding it. When all the lifting clamps 6 are kept in a downward vertical state, the elastic ring 62 is in a normal state.

[0034] When the lifting clamp 6 expands outward, the elastic ring 62 deforms. After the lifting clamp 6 closes inward, the elastic ring 62 returns to its normal state. At this time, the valve 2 is surrounded in the elastic ring 62 and is squeezed by the sponge layer 621, which limits the valve 2 and ensures that the valve 2 is coaxial with the tank body 1. This effectively controls the position of the valve 2 and ensures that the correct position and direction can be maintained when inserting the valve.

[0035] See Figures 2-7 As shown, the extrusion pin 7 is located at the position of the elastic ring 62 on the lifting clamp plate 6. The extrusion end of the extrusion pin 7 passes through the surface of the lifting clamp plate 6 from the outside to the inside and contacts the sponge layer 621. The extrusion pin 7 is perpendicular to the surface of the lifting clamp plate 6. The lifting clamp plate 6 has a through hole for the extrusion pin 7 to pass through. The outer surface of the lifting clamp plate 6 also has a guide channel 71 for guiding the extrusion pin 7. A first spring 711 is fixedly connected between the extrusion pin 7 and the lifting clamp plate 6 in the guide channel 71. A first linear actuator 712 for driving the extrusion pin 7 to move is provided on the outside of the guide channel 71. When the first spring 711 is in the normal state, the sponge layer 621 in contact with the extrusion pin 7 is in the normal state.

[0036] To further stabilize valve 2 and ensure that valve 2 remains coaxial with tank 1, the first linear actuator 712 drives the compression pin 7 to move. The first linear actuator 712 is an electromagnetic drive structure. The compression pin 7 compresses the sponge layer 621, thereby indirectly compressing valve 2 through the elastic ring 62. All compression pins 7 are driven synchronously, so that valve 2 is positioned in the elastic ring 62. At this time, both the sponge layer 621 and the elastic ring 62 are in a deformed state, and the first spring 711 is in a compressed state, controlling the position of valve 2 and further ensuring that valve 2 is coaxial with tank 1. When valve 2 is fixed to tank 1, the first linear actuator 712 stops, the first spring 711 returns to its normal state, the compression pin 7 pops out, and the sponge layer 621 and the elastic ring 62 also return to their normal state, releasing the fixation of valve 2.

[0037] See Figures 2-7 As shown, the movable support 5 has an inner sleeve 51 and an outer sleeve 52 integrally connected. The fixed support 4 has a movable cavity 41 into which the inner sleeve 51 is inserted. The working end of the pressing cylinder 3 is located in the inner sleeve 51. The outer sleeve 52 is sleeved on the fixed support 4. The clamping drive assembly 8 is installed on the outer sleeve 52. A second spring 411 is fixedly connected between the inner sleeve 51 and the outer sleeve 52 and between the top of the movable support 5 and the bottom of the fixed support 4. The fixed support 4 is provided with a second linear actuator 412 for driving the movable support 5 to move. When the second spring 411 is in the normal state, the movable support 5 is in a state close to the fixed support 4.

[0038] The movable support 5 is moved by the second linear actuator 412, which is an electromagnetic drive structure. The movement of the movable support 5 lifts the valve 2. When the second linear actuator 412 drives the movable support 5 away from the fixed support 4, the second spring 411 is stretched until the movable support 5 moves to the designated position and the valve 2 is surrounded by all the lifting clamps 6. Then, the second linear actuator 412 stops, the second spring 411 returns to its normal state, and the movable support 5 moves closer to the fixed support 4, completing the lifting movement of the valve 2 and achieving precise control and positioning of the movable support 5.

[0039] See Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, a rubber sleeve 511 for pressing valve 2 is fixedly provided at the working end of the lower cylinder 3. The rubber sleeve 511 is slidably disposed in the inner sleeve 51. A third spring 512 is fixedly connected between the lower end of the rubber sleeve 511 and the bottom of the movable support 5. When the third spring 512 is in the normal state, the second spring 411 is in the normal state.

[0040] After valve 2 is lifted and the second spring 411 returns to its normal state, valve 2 comes into contact with the rubber sleeve 511. At this time, the third spring 512 is in its normal state and provides support for the movable support 5, ensuring that the movable support 5 can return to its original position without external force, thus achieving the contact between valve 2 and rubber sleeve 511. After the lowering cylinder 3 drives the rubber sleeve 511 to press down valve 2, since valve 2 is supported on the support platform 61 on all the lifting clamps 6, valve 2 moves downward in the form of being supported on the support platform 61, maintaining a parallel state. At this time, the second spring 411 between the movable support 5 and the fixed support 4 is in a stretched state until valve 2 is pressed into the valve hole of the tank body 1. The flexible material of the rubber sleeve 511 also has a buffering effect on the downward pressure of valve 2.

[0041] See Figure 5 , Figure 6 and Figure 8 As shown, valve 2 has a valve body 21, which is in the shape of a straight tube, and the rubber sleeve 511 has a socket 5111 that allows the valve body 21 to be inserted into it.

[0042] When valve 2 is raised to the position, the valve body 21 on valve 2 is inserted into the insertion hole 5111 on the rubber sleeve 511, ensuring that valve 2 is coaxial with tank body 1, effectively achieving the effect of precise valve insertion, and preventing valve 2 from failing to insert or being damaged due to misalignment between valve 2 and valve hole.

[0043] See Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, the upper end of the lifting clamp 6 has a movable hinge part 63, and the edge of the movable support 5 has a fixed hinge part 64 that is rotatably connected to the movable hinge part 63. A hinge shaft 631 is provided between the fixed hinge part 64 and the movable hinge part 63. One end of the hinge shaft 631 is fixedly connected to the movable hinge part 63, and the other end of the hinge shaft 631 extends outward through the fixed hinge part 64. The extended end of the hinge shaft 631 has an end head 6311 with a diameter larger than that between the hinge shafts 631. A torsion spring 632 is fixedly connected between the end head 6311 and the fixed hinge part 64 and is sleeved on the hinge shaft 631. When the torsion spring 632 is in the normal state, the lifting clamp 6 is in a vertical state that keeps downward.

[0044] The function of the torsion spring 632 is to ensure that the lifting clamp 6 always remains in a downward vertical state, and to ensure that the valve 2 is clamped in all the lifting clamps 6. The angle of the lifting clamp 6 is changed by the connection between the movable hinge part 63 and the fixed hinge part 64, thereby realizing the control and adjustment of the lifting clamp 6.

[0045] See Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, the clamping drive assembly 8 is provided with a lifting collar 81, which is slidably sleeved on the outer sleeve 52. A pull rope 82 is fixedly connected between the lower half of each lifting clamp 6 and the lifting collar 81.

[0046] The lifting collar 81 has a first connecting part 821 fixed to the pull rope 82, and the lifting clamp 6 has a second connecting part 822 fixed to the pull rope 82. The upper end of the lifting collar 81 is provided with an anti-detachment ring 811. A fourth spring 812 sleeved on the outer sleeve 52 is fixedly connected between the anti-detachment ring 811 and the lifting collar 81. The movable support 5 is provided with a third linear actuator 813 for driving the lifting collar 81 to move. The third linear actuator 813 is an electromagnetic drive structure.

[0047] When the pull rope 82 is pulled, the lifting collar 81 slides on the outer sleeve 52, thereby simultaneously lifting each lifting clamp 6. The vertical state of the lifting clamp 6 is restored by the torsion spring 632, and the opening of the lifting clamp 6 is controlled by the pull rope 82, thereby realizing the operation and adjustment of the clamp.

[0048] See Figure 9 As shown, a guide wheel 83 is rotatably connected to the edge of the movable support 5 and to the position of each pull rope 82. The end of the pull rope 82 connected to the lifting collar 81 passes around the outside of the guide wheel 83.

[0049] The guide wheel 83 guides the pull rope 82 outward, causing the pull rope 82 between the guide wheel 83 and the lifting clamp 6 to be in an outward tilted state. This ensures that the outward pull of the pull rope 82 can drive the lifting clamp 6 to unfold outward, and that the pull of the pull rope 82 is effectively transmitted to the lifting clamp 6, thereby achieving the purpose of unfolding the lifting clamp 6 outward. The guiding effect of the guide wheel 83 allows the pull of the pull rope 82 to be better utilized, ensuring the stability and effective operation of the lifting clamp 6.

[0050] This invention lifts the valve 2 by raising the clamping plate 6, so that the valve 2 is pressed down in a horizontal state. Compared with the existing method of directly clamping the valve 2 for straightening, this improves the accuracy of valve insertion. Furthermore, the valve 2 is positioned in the center by all the extrusion pins 7, ensuring that the valve 2 is coaxial with the can body 1 and ensuring the quality of the aerosol can.

[0051] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A processing apparatus for a three-piece aerosol can, comprising a fixed support (4) and a pressing cylinder (3) for extruding a valve (2); The pressing cylinder (3) is mounted on the fixed support (4), and the working end of the pressing cylinder (3) is directly opposite the valve hole of the tank body (1); Its features are, The processing device also includes a movable support (5) and multiple lifting clamps (6) evenly distributed around the movable support (5); The movable support (5) is set on the fixed support (4), and the movable support (5) can move relative to the fixed support (4) along the working direction of the downward cylinder (3); Each lifting clamp (6) is provided with a pressing pin (7), and the pressing direction of the pressing pin (7) is perpendicular to the pressing direction of the pressing cylinder (3); The movable support (5) is equipped with a clamping drive assembly (8) for driving all lifting clamps (6) to open and close synchronously; The upper end of the lifting clamp (6) is rotatably connected to the movable support (5), and the lower end of the lifting clamp (6) has a support platform (61) for supporting the valve (2), the support surface of the support platform (61) being perpendicular to the clamping surface of the lifting clamp (6); All the lifting plates (6) are connected by an elastic ring (62). Each lifting plate (6) has a snap-fit ​​part (611) for fixing the elastic ring (62). The outer surface of the elastic ring (62) is provided with a sponge layer (621) around it. When all the lifting plates (6) are in a downward vertical state, the elastic ring (62) is in a normal state. The extrusion pin (7) is located at the position of the elastic ring (62) on the lifting clamp (6). The extrusion end of the extrusion pin (7) passes through the surface of the lifting clamp (6) from the outside to the inside and contacts the sponge layer (621). The extrusion pin (7) is perpendicular to the surface of the lifting clamp (6). The lifting clamp (6) has a through hole for the extrusion pin (7) to pass through. The outer surface of the lifting clamp (6) also has a guide channel (71) for guiding the extrusion pin (7). A first spring (711) is fixedly connected between the extrusion pin (7) and the lifting clamp (6) in the guide channel (71). A first linear actuator (712) is provided on the outside of the guide channel (71) for driving the extrusion pin (7) to move. When the first spring (711) is in the normal state, the sponge layer (621) in contact with the extrusion pin (7) is in the normal state. The movable support (5) has an integrally connected inner sleeve (51) and outer sleeve (52), and the fixed support (4) has a movable cavity (41) into which the inner sleeve (51) is inserted. The working end of the pressing cylinder (3) is located in the inner sleeve (51), and the outer sleeve (52) is sleeved on the fixed support (4). The clamping drive assembly (8) is installed on the outer sleeve (52). A second spring (411) is fixedly connected between the inner sleeve (51) and the outer sleeve (52) and between the top of the movable support (5) and the bottom of the fixed support (4). The fixed support (4) is provided with a second linear actuator (412) for driving the movable support (5) to move. When the second spring (411) is in the normal state, the movable support (5) is in a state close to the fixed support (4). The working end of the downward cylinder (3) is fixedly provided with a rubber sleeve (511) for pressing against the valve (2). The rubber sleeve (511) is slidably disposed in the inner sleeve (51). A third spring (512) is fixedly connected between the lower end of the rubber sleeve (511) and the bottom of the movable support (5). When the third spring (512) is in the normal state, the second spring (411) is in the normal state. The valve (2) has a valve body (21), which is a straight tube. The rubber sleeve (511) has a socket (5111) that allows the valve body (21) to be inserted into it.

2. The processing apparatus for a three-piece aerosol can according to claim 1, characterized in that, The upper end of the lifting clamp (6) has a movable hinge (63), and the edge of the movable support (5) has a fixed hinge (64) that is rotatably connected to the movable hinge (63). A hinge shaft (631) is provided between the fixed hinge (64) and the movable hinge (63). One end of the hinge shaft (631) is fixedly connected to the movable hinge (63), and the other end of the hinge shaft (631) extends outward through the fixed hinge (64). The extended end of the hinge shaft (631) is provided with an end head (6311) with a diameter larger than that between the hinge shaft (631). A torsion spring (632) is fixedly connected between the end head (6311) and the fixed hinge (64) and is sleeved on the hinge shaft (631). When the torsion spring (632) is in the normal state, the lifting clamp (6) is in a vertical state that is kept downward.

3. The processing apparatus for a three-piece aerosol can according to claim 1, characterized in that, The clamping drive assembly (8) is provided with a lifting collar (81), which is slidably sleeved on the outer sleeve (52). A pull rope (82) is fixedly connected between the lower half of each lifting clamp (6) and the lifting collar (81).

4. The processing apparatus for a three-piece aerosol can according to claim 3, characterized in that, A guide wheel (83) is rotatably connected to the edge of the movable support (5) and at the position corresponding to each pull rope (82). The end of the pull rope (82) connected to the lifting collar (81) passes around the outside of the guide wheel (83).

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