Capping device with pressure self-adjusting mechanism

Abstract

The invention relates to the technical field of capping devices, in particular to a capping device with a pressure self-adjusting mechanism. Comprising a rack, a self-pressure-regulating rotary capping mechanism and a lifting assembly are arranged on the upper portion and the lower portion of the rack respectively, and the lifting assembly is used for lifting a workpiece to the position below the self-pressure-regulating rotary capping mechanism for rotary capping treatment. Jacking of the servo electric cylinder is matched with the self-pressure-regulating rotary capping mechanism for capping, and the problem of large pressure fluctuation caused by gas rod capping is avoided. And meanwhile, the pressure self-adjusting function is achieved, and through cooperation of a pressure adjusting spring and a servo electric cylinder, the pressure between the capping sealer and the barrel cover can be automatically balanced according to the actual height and the jacking condition of the workpiece. Even if small errors occur in the jacking process, the capping sealer can move upwards along the rotating shaft, the pressure adjusting spring contracts to achieve buffering, the problem that a barrel cover is damaged or not sealed tightly due to too large or too small pressure is effectively solved, and the stability of capping quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of capping devices, and specifically to a capper with a pressure self-regulating mechanism. Background Art

[0002] Capping devices play an extremely important role in pharmaceutical packaging, mainly used for automatically sub-packaging sterile raw materials and then capping and sealing them. After capping and sealing, it can prevent the leakage of drug raw materials in the container and avoid losses and pollution caused by leakage during transportation.

[0003] In traditional capping processes, an air rod is usually used to directly push the capper to perform capping operations on workpieces (such as aluminum barrels, etc.). However, some capping devices do not have a buffer mechanism. When there are air pressure fluctuations in the air rod, it is easy to cause the thrust of the air rod to be too large or too small. When the thrust is too large, it will damage the barrel lid, affecting the integrity and service life of the barrel lid; when the thrust is too small, it is easy to cause the barrel lid to be poorly sealed, unable to ensure the sealing performance of the workpiece.

[0004] CN201510515259.4 discloses a press head device for an automatic capping machine. Although a ring spring is provided at the press head position for buffering in this solution. However, the press head driven by the air rod uses a top pressurization method, and the spring not only needs to buffer the pressure but also needs to bear the pressure conduction to conduct the pressure of the air cylinder to the pressing plate. Therefore, the spring needs to repeatedly undergo large-stroke compression and rebound, with a large deformation. It is prone to fatigue deformation after long-term use, resulting in damage or detachment.

[0005] In addition, the rotary capping knives of existing devices, such as those in CN202411320589.3, adopt a fixed structure, making it difficult to balance the pressure between the tool heads. When the position of the workpiece changes, it is easy to cause uneven pressure distribution between the tool heads, which in turn leads to scratches on the aluminum lid or the generation of aluminum ion chips due to intense friction. Summary of the Invention

[0006] The present invention aims to provide a capper with a pressure self-regulating mechanism to solve the above problems in the prior art, achieve efficient, stable, and accurate capping operations on workpieces, and meet the automated production requirements for workpieces of different specifications.

[0007] To solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0008] A capper with a pressure self-regulating mechanism, comprising a frame. An automatic pressure-regulating rotary capping mechanism and a lifting assembly are respectively provided on the upper and lower parts of the frame. The lifting assembly is used to lift the workpiece below the automatic pressure-regulating rotary capping mechanism for rotary capping treatment;

[0009] The self - regulating rotary capping mechanism includes: a motor, a speed - reducing component, a rotating shaft, a capping sealer, and a pressure - regulating spring; the motor drives the rotating shaft to rotate through the speed - reducing component, the capping sealer is arranged at the end of the rotating shaft and rotates synchronously with the rotating shaft, the bottom of the pressure - regulating spring is press - connected to the capping sealer, and after the workpiece is lifted to the position of the capping sealer, it drives the capping sealer to move upward along the rotating shaft and squeezes the pressure - regulating spring for self - pressure regulation;

[0010] The capping sealer is provided with a guiding part and a telescopic sealing structure. The guiding part is in the shape of a conical barrel, and the telescopic sealing structure is provided with guide wheels that cooperate with the guiding part. After the capping sealer rises, the guide wheels slide along the guiding part to realize the automatic contraction of the telescopic sealing structure.

[0011] Optionally, the capping sealer includes a rotating - shaft connecting sleeve, an adjusting flange, a fixed flange, and a capping disc;

[0012] The top of the rotating - shaft connecting sleeve is provided with a groove, the end of the pressure - regulating spring is press - connected in the groove, the groove is provided with a through - hole, the rotating shaft is arranged in the through - hole, keys are arranged on both sides of the rotating shaft, key grooves that cooperate with the keys are arranged in the through - hole, a limiting ring is arranged at the bottom of the rotating shaft, and a limiting - ring groove is arranged at the bottom of the through - hole;

[0013] The center position of the adjusting flange is provided with a center hole, and slot holes are arranged on both sides. The rotating - shaft connecting sleeve is arranged in the center hole, and screws are arranged on both sides of the rotating - shaft connecting sleeve, and the ends of the screws are arranged in the slot holes;

[0014] The adjusting flange, the fixed flange, and the capping disc are fixedly connected in sequence from top to bottom; a placing groove is arranged on the fixed flange, and the telescopic sealing structure is arranged in the placing groove.

[0015] Optionally, the guiding part is arranged at the lower part of the rotating - shaft connecting sleeve.

[0016] Optionally, the telescopic sealing structure is composed of two telescopic units arranged in opposite directions, and the two telescopic units are connected by a transverse spring. The telescopic unit includes a telescopic block, a telescopic guiding part, an adjusting mechanism, and a sealing cutter wheel. The telescopic block is arranged in the placing groove, the adjusting mechanism is arranged at the far end of the telescopic block and is located outside the placing groove, the sealing cutter wheel is arranged at the bottom of the adjusting mechanism and is located below the capping disc, the telescopic guiding part is arranged at the near end of the telescopic block, and the guide wheel is arranged at the top of the telescopic guiding part.

[0017] Optionally, the machine frame is provided with a support frame and a center positioning component. The support frame is provided with a plurality of rollers arranged at intervals, and the center positioning component is provided with an arc - shaped groove.

[0018] Optionally, the lifting assembly includes a jacking member, a servo electric cylinder, and a jacking positioning shaft. The jacking member includes a base plate and a jacking frame. The number of jacking frames is multiple and corresponds to the intervals between the rollers. When the jacking member is lifted, the jacking frames can pass through between the rollers and jack the aluminum barrel from the bottom to the self-pressure-regulating rotary capping mechanism. The servo electric cylinder is provided with a push rod, and the end of the push rod is connected to the bottom of the base plate.

[0019] Optionally, a receiving cavity is provided at the distal end of the telescopic block. A chuck and a locking screw are provided at the opening of the receiving cavity. One end of the adjusting mechanism is inserted into the receiving cavity and can slide along the receiving cavity. The adjusting mechanism is provided with a lateral adjusting screw. The lateral adjusting screw is inserted through the adjusting mechanism, and the end is rotatably connected to the bottom of the receiving cavity. The lateral adjusting screw is provided with a threaded portion near the bottom of the receiving cavity, and the adjusting mechanism is provided with an internal thread at the corresponding threaded portion position.

[0020] Optionally, the adjusting mechanism is further provided with a vertical receiving cavity. A second chuck and a second locking screw are provided at the opening of the vertical receiving cavity. The sealing cutter wheel includes a cutter head and a cutter wheel rotating shaft. The top of the cutter wheel rotating shaft is inserted into the vertical receiving cavity. The cutter wheel rotating shaft is provided with a second threaded portion, and the vertical receiving cavity is provided with an internal thread at the corresponding position.

[0021] The advantages of the present invention are as follows:

[0022] 1. The present invention uses a servo electric cylinder for jacking in cooperation with a self-pressure-regulating rotary capping mechanism for capping, avoiding the problem of large pressure fluctuations caused by pneumatic rod capping. At the same time, the present invention has a pressure self-regulating function. Through the cooperation of the pressure-regulating spring and the servo electric cylinder, it can automatically balance the pressure between the capping sealer and the barrel lid according to the actual height and jacking situation of the workpiece. Even if there are slight errors during the jacking process, the capping sealer can move upward along the rotating shaft, and the pressure-regulating spring contracts to achieve buffering, effectively avoiding problems such as barrel lid damage or poor sealing caused by excessive or too small pressure, and ensuring the stability of the capping quality. 2. The telescopic sealing structure of the present invention can automatically contract under the action of the guiding portion, and cooperate with the rotary capping action to effectively roll and form the edge of the barrel lid. At the same time, the position of the sealing cutter wheel can be finely adjusted in advance through the adjusting mechanism, further enhancing the adaptability of the equipment to different workpieces and the accuracy of capping. In addition, the automatic contraction design of the telescopic sealing structure can be directly positioned under the aluminum lid, avoiding indentations on the aluminum lid edge and improving the aesthetic degree.

[0023] 3. The conical barrel-shaped guiding portion of the present invention can be linked with the telescopic sealing structure to convert the pressure into the lateral power of the telescopic sealing structure. At the same time, the lateral spring has a balancing effect, enabling the sealing cutter wheel to maintain rotational balance when rolling and forming the edge of the barrel lid, ensuring the stability of each aluminum lid edge finishing, effectively avoiding scratches on the aluminum lid and reducing the generation of aluminum chip particles, thereby improving the quality and reliability of the sealing and extending the service life of the workpiece.

[0024] 4. The present invention uses a servo electric cylinder for the jacking operation, which has the characteristics of fast jacking speed and high jacking accuracy. It can quickly and accurately jack the aluminum barrel to the preset height, providing precise position guarantee for the subsequent capping and sealing process, and further improving the stability and consistency of the entire capping process. Since the present invention adopts the lower part jacking method, the pressure regulating spring only plays a buffering role, with small deformation amount, not easily undergoing fatigue deformation, and having a long service life. Description of the Drawings

[0025] Figure 1 Structural diagram of a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0026] Figure 2 State diagram of the lifting assembly after rising in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0027] Figure 3 Reference diagram of the usage state of a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0028] Figure 4 Structural diagram of the lower part of the frame in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0029] Figure 5 Structural diagram of the lifting assembly in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0030] Figure 6 Structural diagram of the self-pressure-regulating rotary capping mechanism in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0031] Figure 7 Explosion diagram of the self-pressure-regulating rotary capping mechanism in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0032] Figure 8 Structural diagram of the rotating shaft connecting sleeve in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0033] Figure 9 Internal structural diagram of the rotating shaft connecting sleeve in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0034] Figure 10 Structural diagram of the capping and sealing device in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0035] Figure 11 Structural diagram of the telescopic sealing structure in a capping machine with a pressure self-regulating mechanism in Embodiment 1.

[0036] Figure 12 Internal structure diagram of the capping sealer before lifting in a capping machine with a pressure self - regulating mechanism in Example 1.

[0037] Figure 13 Internal structure diagram of the capping sealer after lifting in a capping machine with a pressure self - regulating mechanism in Example 1.

[0038] Figure 14 State diagram of the capping machine with a pressure self - regulating mechanism in Example 1 after edging the barrel lid.

[0039] Figure 15 Structure diagram of the flexible connection flange in a capping machine with a pressure self - regulating mechanism in Example 1.

[0040] Figure 16 Structure diagram of the adjusting mechanism in a capping machine with a pressure self - regulating mechanism in Example 1.

[0041] Figure 17 Internal structure diagram of the adjusting mechanism in a capping machine with a pressure self - regulating mechanism in Example 1.

[0042] Figure 18 Structure diagram of the scale in a capping machine with a pressure self - regulating mechanism in Example 1.

[0043] Labels in the figure:

[0044] 1 - Frame, 11 - Support frame, 111 - Roller, 12 - Central positioning component, 121 - Arc groove.

[0045] 2 - Lifting component, 21 - Lifting part, 211 - Seat plate, 212 - Lifting frame, 22 - Servo electric cylinder, 221 - Push rod, 23 - Lifting positioning shaft, 231 - Lifting positioning shaft sleeve.

[0046] 3 - Self - regulating rotary capping mechanism, 31 - Motor, 32 - Reduction component, 321 - Mounting plate, 322 - Slewing bearing, 33 - Rotating shaft, 331 - Key, 332 - Limit ring, 34 - Capping sealer, 341 - Rotating shaft connecting sleeve, 3411 - Groove, 3412 - Through hole, 3413 - Keyway, 3414 - Limit ring groove, 3415 - Guide part, 3416 - Screw, 342 - Adjusting flange, 3421 - Central hole, 3422 - Slot hole, 343 - Fixed flange, 3431 - Placing groove, 344 - Capping disc, 35 - Pressure - regulating spring, 36 - Flexible connection flange.

[0047] 4 - Telescopic sealing structure, 41 - Telescopic unit, 411 - Telescopic block, 4111 - Accommodation cavity, 4112 - Chuck, 4113 - Locking screw, 412 - Telescopic guiding part, 4121 - Guide wheel, 413 - Adjusting mechanism, 4131 - Transverse adjusting screw, 4132 - Thread part, 4133 - Vertical accommodation cavity, 4134 - Second chuck, 4135 - Second locking screw, 414 - Sealing cutter wheel, 4141 - Cutter head, 4142 - Cutter wheel rotating shaft, 4143 - Second thread part, 42 - Transverse spring.

[0048] 5 - Aluminum barrel, 51 - Barrel lid.

[0049] 6 - Scale. Detailed implementation mode

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0051] Embodiment 1:

[0052] This embodiment discloses a capping machine with a pressure self - adjusting mechanism, as Figure 1 shown, including a frame 1, a lifting assembly 2 and a self - pressure - regulating rotary capping mechanism 3. The lifting assembly 2 is arranged at the lower part of the frame 1, and the self - pressure - regulating rotary capping mechanism 3 is arranged at the upper part of the frame 1.

[0053] As Figure 2 and Figure 3 shown, the frame 1 is provided with a support frame 11 and a central positioning assembly 12. The support frame 11 is provided with a plurality of rollers 111 arranged at intervals. The central positioning assembly 12 is provided with an arc - shaped groove 121. Taking a 30L aluminum barrel 5 as an example, the staff places the aluminum barrel 5 on the support frame 11, and then manually pushes the aluminum barrel 5 into the arc - shaped groove 121. The outer side of the aluminum barrel 5 matches the arc - shaped groove 121, so as to achieve the purpose of positioning the center of the aluminum barrel 5. The number of the central positioning assemblies 12 is two, and they are arranged up and down, which can stably position the center of the aluminum barrel 5. In specific implementation, different sizes of central positioning assemblies 12 can also be selected according to the volume and model of the aluminum barrel 5, so that the central axis of the aluminum barrel 5 is aligned with the central axis of the self - pressure - regulating rotary capping mechanism 3.

[0054] As Figure 4 and Figure 5As shown in the figure, the lifting assembly 2 includes a jacking member 21, a servo electric cylinder 22, and a jacking positioning shaft 23. The jacking member 21 includes a seat plate 211 and a jacking frame 212. The number of the jacking frames 212 is multiple and corresponds to the intervals between the rollers 111. When the jacking member 21 is lifted, the jacking frames 212 can pass through between the rollers 111 and jack up the aluminum barrel 5 from the bottom to the self-pressure-regulating rotary capping mechanism 3. A push rod 221 is provided on the servo electric cylinder 22, and the end of the push rod 221 is connected to the bottom of the seat plate 211. After the servo electric cylinder 22 works, it drives the lifting member 21 to lift and lower through the push rod 221. The number of the jacking positioning shafts 23 is two, which are respectively arranged on both sides of the push rod 221 and are slidably connected to the bottom of the frame 1 through the jacking positioning shaft sleeves 231. The jacking positioning shafts 23 are used to provide a stable and guiding effect on the jacking member 21, so that the jacking member 21 is always in a horizontal state, avoiding the inclination of the jacking member 21 and avoiding the problem of the misalignment of the central axis of the aluminum barrel 5 and the central axis of the self-pressure-regulating rotary capping mechanism 3.

[0055] After the aluminum barrel 5 is lifted, its top contacts the bottom of the self-pressure-regulating rotary capping mechanism 3, and the capping operation is carried out under the action of the self-pressure-regulating rotary capping mechanism 3. As Figure 6 shown in the figure, the self-pressure-regulating rotary capping mechanism 3 includes a motor 31, a speed reduction assembly 32, a rotating shaft 33, a capping sealer 34, and a pressure-regulating spring 35. The motor 31 and the speed reduction assembly 32 are built in the top of the frame 1. The speed reduction assembly 32 is a speed reduction box, which can be set separately or combined with the motor 31 as a speed reduction motor. An installation plate 321 is provided at the bottom of the speed reduction assembly 32 and is fixedly connected to the frame 1 through the installation plate 321. A slewing bearing 322 is provided below the installation plate 321, and the rotating shaft 33 passes through the slewing bearing 322. The capping sealer 34 is arranged at the bottom of the rotating shaft 33 and rotates synchronously with the rotating shaft 33.

[0056] As Figure 6 and Figure 7As shown in the figure, a rotating shaft connecting sleeve 341 is provided on the capping sealer 34, and the capping sealer 34 can slide along the rotating shaft 33 through the rotating shaft connecting sleeve 341. A pressure regulating spring 35 is arranged above the capping sealer 34 to regulate the pressure between the capping sealer 34 and the cap of the aluminum barrel 5. The existing capping device usually uses a pneumatic rod to directly push the capping machine to cap the aluminum barrel 5. When there is a pressure fluctuation in the pneumatic rod, it is easy to cause the thrust of the pneumatic rod to be too large or too small. When the thrust is too large, it is easy to damage the barrel cap 51. When the thrust is too small, it is easy to cause the barrel cap 51 to be not tightly sealed. In this solution, the servo electric cylinder 22 is used to lift the aluminum barrel 5 from below. The servo electric cylinder 22 has the characteristics of fast ejection speed and high ejection accuracy, and can quickly and effectively control the height of the aluminum barrel 5 after ejection. When the aluminum barrel 5 is lifted to the specified height, its top contacts the capping sealer 34 and generates pressure. The pressure regulating spring 35 can balance the pressure between the capping sealer 34 and the barrel cap 51. When an error occurs during the lifting process, resulting in the aluminum barrel 5 being over-lifted, the capping sealer 34 can be lifted upward, and at the same time, the pressure regulating spring 35 contracts to achieve a buffering effect. On the contrary, if the pressure regulating spring 35 is not provided, the capping sealer 34 cannot slide axially along the rotating shaft 33. When an error occurs during the lifting process, even if it rises slightly too much, it will cause the pressure between the barrel cap 51 and the capping sealer 34 to rise sharply, thereby affecting the capping effect.

[0057] As Figure 8 , Figure 9 and Figure 10 shown, a groove 3411 is provided at the top of the rotating shaft connecting sleeve 341, and the end of the pressure regulating spring 35 is crimped in the groove 3411. A through hole 3412 is provided on the groove 3411. The rotating shaft 33 is inserted through the through hole 3412. Keys 331 are provided on both sides of the rotating shaft 33, and key grooves 3413 matching the keys 331 are provided in the through hole 3412. A limit ring 332 is provided at the bottom of the rotating shaft 33, and a limit ring groove 3414 is provided at the bottom of the through hole 3412. After the rotating shaft 33 passes through the through hole 3412, the limit ring 332 at the end is arranged in the limit ring groove 3414. In the non-use state, the pressure regulating spring 35 presses down the rotating shaft connecting sleeve 341 to make the limit ring 332 in the limit ring groove 3414. When the aluminum barrel 5 is lifted, the capping sealer 34 can drive the rotating shaft connecting sleeve 341 to move upward along the rotating shaft 33.

[0058] As Figure 7 and Figure 10As shown in the figure, the capping sealer 34 further includes an adjusting flange 342, a fixed flange 343, a telescopic sealing structure 4, and a capping disc 344. The adjusting flange 342, the fixed flange 343, and the capping disc 344 are fixedly connected in sequence from top to bottom. A placement groove 3431 is provided on the fixed flange 343, and the telescopic sealing structure 4 is arranged in the placement groove 3431. A central hole 3421 is provided at the center of the adjusting flange 342, and slot holes 3422 are provided on both sides. A rotating shaft connecting sleeve 341 is arranged in the central hole 3421. Screws 3416 are provided on both sides of the rotating shaft connecting sleeve 341, and the ends of the screws 3416 are arranged in the slot holes 3422. After the rotating shaft 33 rotates, the rotating shaft connecting sleeve 341 can drive the adjusting flange 342 to rotate through the screws 3416. Since the screws 3416 can slide up and down along the slot holes 3422, when the aluminum bucket 5 is lifted, the capping sealer 34 and the adjusting flange 342 can be lifted upward relative to the rotating shaft connecting sleeve 341. At the same time, the screws 3416 slide down along the slot holes 3422. After the screws 3416 slide to the bottom of the slot holes 3422, the adjusting flange 342 pushes the rotating shaft connecting sleeve 341 to move upward together, and compresses the pressure regulating spring 35.

[0059] As Figure 15 shown, a flexible connection flange 36 is further provided outside the rotating shaft 311 and the pressure regulating spring 35. Flange discs 361 are respectively provided at the top and bottom of the flexible connection flange 36, and are hermetically connected to the machine frame 1 and the adjusting flange 342 through the flange discs 361 at the top and bottom respectively. The flexible connection flange 36 is made of silicone material and can contract and extend according to the lifting of the adjusting flange 342. The flexible connection flange 36 can provide sealing protection for the self-pressure regulating rotating capping mechanism 3, achieving the effects of waterproofing and dustproofing. The machine frame 1 of this embodiment is made of 304 stainless steel. The motor 31, the speed reduction component 32, and the servo electric cylinder 22 are all hermetically arranged inside the machine frame 1. Therefore, the overall sealing and waterproof effect of the device is good, and it can be washed with water and sterilized by VHP. The above waterproof and sealing design can facilitate the maintenance of the device during use. When applied in the RABS system, it can ensure that the surface of the device is clean and sterile, reduce the pollution risk during the production process, ensure the product quality, and improve the production efficiency.

[0060] The telescopic sealing structure 4 can automatically contract based on the lifting action of the aluminum bucket 5, so as to achieve the purpose of edge sealing. As Figure 11 、 12As shown in FIGS. 13 and 14, the telescopic sealing structure 4 is composed of two reversely arranged telescopic units 41, and the two telescopic units 41 are connected by a transverse spring 42. The telescopic unit 41 includes a telescopic block 411, a telescopic guiding portion 412, an adjusting mechanism 413 and a sealing cutter wheel 414. The telescopic block 411 is arranged in the placing groove 3431. The adjusting mechanism 413 is arranged at the distal end of the telescopic block 411 and is located outside the placing groove 3431. The sealing cutter wheel 414 is arranged at the bottom of the adjusting mechanism 413 and is located below the capping disc 344. The telescopic guiding portion 412 is arranged at the proximal end of the telescopic block 411. A conical barrel-shaped guiding portion 3415 is arranged at the bottom of the rotating shaft connecting sleeve 341. A guiding wheel 4121 is arranged at the top of the telescopic guiding portion 412. When the adjusting flange 342 rises relative to the rotating shaft connecting sleeve 341, the guiding wheel 4121 abuts against the inner wall of the conical barrel-shaped guiding portion 3415, and moves towards the central position under the guiding action of the inner wall; thereby driving the telescopic block 411, the adjusting mechanism 413 and the sealing cutter wheel 414 to retract inward, and completing the edge curling operation on the bottom of the barrel cover 51.

[0061] The transverse spring 42 is arranged between the telescopic blocks 411 between the two telescopic units 41, and mainly plays the roles of resetting and balancing the force. In the non-use state, the transverse spring 42 pushes the two telescopic units 41 to both sides, so that the two telescopic units 41 are in the extended state. When the aluminum barrel 5 is lifted, the telescopic unit 41 contracts inward under the guidance of the guiding portion 3415, and cooperates with the rotation of the capping sealer 34 to perform edge curling treatment on the bottom edge of the barrel cover 51. When the force on the two telescopic units 41 is uneven during the edge curling process, the transverse spring 42 can quickly conduct the force to achieve the purpose of balancing the extrusion forces of the two telescopic units 41 on the barrel cover 51.

[0062] Before use, the position of the sealing cutter wheel 414 can be pre-adjusted through the adjusting mechanism 413. The structure of the adjusting mechanism is as follows: As Figure 16 and Figure 17As shown in the figure, a receiving cavity 4111 is provided at the distal end of the telescopic block 411. A chuck 4112 and a locking screw 4113 are provided at the opening of the receiving cavity 4111. One end of the adjusting mechanism 413 is inserted into the receiving cavity 4111 and can slide along the receiving cavity 4111. A transverse adjusting screw 4131 is provided on the adjusting mechanism 413. The transverse adjusting screw 4131 is inserted through the adjusting mechanism 413, and the end is rotatably connected to the bottom of the receiving cavity 4111. A threaded portion 4132 is provided at a position of the transverse adjusting screw 4131 close to the bottom of the receiving cavity 4111. The adjusting mechanism 413 is provided with an internal thread at a position corresponding to the threaded portion 4132. After rotating the transverse adjusting screw 4131, the adjusting mechanism 413 can achieve fine transverse adjustment under the action of thread engagement. Different adjustment precisions can be achieved by selecting threaded portions 4132 with different pitches during production. The pitch of the threaded portion in this embodiment is 1.2 mm, and the transverse adjusting screw 4131 is a hexagon screw. When the transverse adjusting screw 4131 rotates 60°, a single-time transverse fine adjustment of 0.2 mm can be achieved. After the adjustment is completed, the locking screw 4113 can be tightened to clamp the adjusting mechanism 413 by the chuck 4112 to complete the locking.

[0063] A vertical receiving cavity 4133 is further provided on the adjusting mechanism 413. A second chuck 4134 and a second locking screw 4135 are provided at the opening of the vertical receiving cavity 4133. The sealing cutter wheel 414 includes a cutter head 4141 and a cutter wheel rotating shaft 4142. The top of the cutter wheel rotating shaft 4142 is inserted into the vertical receiving cavity 4133. A second threaded portion 4143 is provided on the cutter wheel rotating shaft 4142, and an internal thread is provided at the corresponding position in the vertical receiving cavity 4133. The working principle of the second threaded portion 4143 is the same as that of the threaded portion 4132, and a single-time up-and-down fine adjustment of 0.2 mm can also be achieved.

[0064] As Figure 18 shown in the figure, scales 6 are provided at the insertion position of the adjusting mechanism 413 into the receiving cavity 4111 and at the insertion position of the cutter wheel rotating shaft 4142 into the vertical receiving cavity 4133. The scales 6 can indicate the insertion depths of the adjusting mechanism 413 and the cutter wheel rotating shaft 4142. When the operator uses the adjusting mechanism 413 for fine adjustment, precise adjustment can be made according to the indication of the scales 6, thereby improving the operation stability and processing precision of the equipment.

[0065] The working process of this embodiment is as follows:

[0066] Working process:

[0067] 1. Positioning stage: Place the 30L aluminum bucket 5 on the support roller 111, and manually push the aluminum bucket 5 into the arc-shaped groove 121 of the upper and lower double-layer center positioning assembly 12 to ensure that the central axis of the bucket body is aligned with the main shaft of the equipment.

[0068] 2. Jacking stage: The servo cylinder 22 drives the ejector rod 221 to rise vertically, synchronously driving the seat plate 211 and the multi-point distributed jacking frames 212 to move upward along the jacking positioning shaft 23. After the jacking frame 212 passes through the roller gap, it lifts the bottom of the aluminum barrel 5, and the jacking height is precisely controlled by the servo cylinder 22 to the preset reference value.

[0069] 3. Capping contact stage: When the aluminum barrel 5 rises during the jacking stage, the barrel cap 51 contacts the capping sealer 34 and pushes it upward. After the capping sealer 34 rises, the pressure regulating spring 35 buffers and self-adjusts according to the pressure between the capping sealer 34 and the barrel cap 51 to stabilize the pressure during each capping process.

[0070] 4. Sealing operation stage:

[0071] a. The motor 31 drives the rotating shaft 33 to rotate through the reduction assembly 32;

[0072] b. The rotating shaft connecting sleeve 341 drives the adjusting flange 342 to rotate synchronously through the keyway structure;

[0073] c. As the rotating shaft connecting sleeve 341 moves upward along the rotating shaft 33, the inner wall of the guiding part 3415 forces the guide wheels 4121 of the telescopic unit 411 to move centripetally;

[0074] d. The double telescopic unit 41 symmetrically retracts inward at a speed of 0.1 mm / s under the balance of the transverse spring 42, and the capping knife wheel 414 rolls and forms the edge of the barrel cap 51.

[0075] In this solution, the conical barrel-shaped guiding part 3415 enables the pressurizing mechanism and the telescopic sealing structure 4 to be linked, so that the capping knife wheel 414 is driven to automatically retract inward during the pressurizing process. The transverse spring 42 can keep the rotation in a balanced state to ensure the stability of the aluminum cap edge trimming each time, protect the aluminum cap from scratches, and reduce the aluminum particles generated by the friction of the aluminum cap edge trimming.

[0076] 6. Reset and return stage: After the sealing is completed, the servo cylinder 22 retracts, the jacking frame 212 descends below the plane of the roller 111, and the operator moves the finished barrel out along the roller 111. Each actuator of the equipment automatically resets to the initial position, waiting for the next working cycle.

[0077] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A capping machine with a pressure self-regulating mechanism, comprising a frame (1), characterized in that, The upper and lower parts of the frame (1) are respectively provided with a self - regulating rotary capping mechanism (3) and a lifting component (2). The lifting component (2) is used to lift the workpiece below the self - regulating rotary capping mechanism (3) for rotary capping treatment; The self - regulating rotary capping mechanism (3) includes: a motor (31), a speed - reducing component (32), a rotating shaft (33), a capping sealer (34) and a pressure - regulating spring (35). The motor (31) drives the rotating shaft (33) to rotate through the speed - reducing component (32). The capping sealer (34) is arranged at the end of the rotating shaft (33) and rotates synchronously with the rotating shaft (33). The bottom of the pressure - regulating spring (35) is pressed against the capping sealer (34). When the workpiece is lifted to the position of the capping sealer (34), it drives the capping sealer (34) to move upward along the rotating shaft (33) and squeezes the pressure - regulating spring (35) for self - pressure regulation; A guiding part (3415) and a telescopic sealing structure (4) are arranged in the capping sealer (34). The guiding part (3415) is in the shape of a conical barrel. A guiding wheel (4121) matching with the guiding part (3415) is arranged on the telescopic sealing structure (4). After the capping sealer (34) rises, the guiding wheel (4121) slides along the guiding part (3415) to realize the automatic contraction of the telescopic sealing structure (4).

2. The capping machine with a pressure self-regulating mechanism according to claim 1, characterized in that The capping sealer (34) includes a rotating - shaft connecting sleeve (341), an adjusting flange (342), a fixed flange (343) and a capping disc (344); A groove (3411) is arranged at the top of the rotating - shaft connecting sleeve (341). The end of the pressure - regulating spring (35) is pressed in the groove (3411). A through - hole (3412) is arranged on the groove (3411). The rotating shaft (33) passes through the through - hole (3412). Keys (331) are arranged on both sides of the rotating shaft (33). Key grooves (3413) matching with the keys (331) are arranged in the through - hole (3412). A limiting ring (332) is arranged at the bottom of the rotating shaft (33), and a limiting - ring groove (3414) is arranged at the bottom of the through - hole (3412); A central hole (3421) is arranged at the central position of the adjusting flange (342), and slot holes (3422) are arranged on both sides. The rotating - shaft connecting sleeve (341) is arranged in the central hole (3421). Screws (3416) are arranged on both sides of the rotating - shaft connecting sleeve (341), and the ends of the screws (3416) are arranged in the slot holes (3422); The adjusting flange (342), the fixed flange (343) and the capping disc (344) are fixedly connected in sequence from top to bottom. A placing groove (3431) is arranged on the fixed flange (343), and the telescopic sealing structure (4) is arranged in the placing groove (3431).

3. The capping machine with a pressure self-regulating mechanism according to claim 2, characterized in that, The guiding part (3415) is arranged at the lower part of the rotating - shaft connecting sleeve (341).

4. A capping machine with a pressure self-regulating mechanism according to claim 3, characterized in that, The telescopic sealing structure (4) is composed of two reversely arranged telescopic units (41). The two telescopic units (41) are connected by a transverse spring (42). The telescopic unit (41) includes a telescopic block (411), a telescopic guiding part (412), an adjusting mechanism (413), and a sealing cutter wheel (414). The telescopic block (411) is arranged in the placement groove (3431). The adjusting mechanism (413) is arranged at the distal end of the telescopic block (411) and is located outside the placement groove (3431). The sealing cutter wheel (414) is arranged at the bottom of the adjusting mechanism (413) and is located below the capping disc (344). The telescopic guiding part (412) is arranged at the proximal end of the telescopic block (411), and the guiding wheel (4121) is arranged at the top of the telescopic guiding part (412).

5. A capping machine with a pressure self-regulating mechanism according to claim 1, characterized in that, A support frame (11) and a central positioning assembly (12) are arranged on the frame (1). A plurality of rollers (111) arranged at intervals are arranged on the support frame (11). An arc-shaped groove (121) is arranged on the central positioning assembly (12).

6. A capping device with a pressure self-regulating mechanism according to claim 5, characterized in that, The lifting assembly (2) includes a jacking member (21), a servo electric cylinder (22), and a jacking positioning shaft (23). The jacking member (21) includes a seat plate (211) and a jacking frame (212). The number of jacking frames (212) is multiple and corresponds to the intervals between the rollers (111). When the jacking member (21) is lifted, the jacking frame (212) can pass through between the rollers (111) and jack the aluminum barrel (5) from the bottom to the self-pressure regulating rotary capping mechanism (3). A push rod (221) is arranged on the servo electric cylinder (22), and the end of the push rod (221) is connected to the bottom of the seat plate (211).

7. A capping machine with a pressure self-regulating mechanism according to claim 4, characterized in that, A receiving cavity (4111) is arranged at the distal end of the telescopic block (411). A chuck (4112) and a locking screw (4113) are arranged at the opening of the receiving cavity (4111). One end of the adjusting mechanism (413) is inserted into the receiving cavity (4111) and can slide along the receiving cavity (4111). A transverse adjusting screw (4131) is arranged on the adjusting mechanism (413). The transverse adjusting screw (4131) is inserted through the adjusting mechanism (413), and the end is rotatably connected to the bottom of the receiving cavity (4111). The transverse adjusting screw (4131) is provided with a threaded portion (4132) near the bottom of the receiving cavity (4111), and the adjusting mechanism (413) is provided with an internal thread at the corresponding position of the threaded portion (4132).

8. A capping machine with a pressure self-regulating mechanism according to claim 7, characterized in that, A vertical receiving cavity (4133) is further arranged on the adjusting mechanism (413). A second chuck (4134) and a second locking screw (4135) are arranged at the opening of the vertical receiving cavity (4133). The sealing cutter wheel (414) includes a cutter head (4141) and a cutter wheel rotating shaft (4142). The top of the cutter wheel rotating shaft (4142) is inserted into the vertical receiving cavity (4133). The cutter wheel rotating shaft (4142) is provided with a second threaded portion (4143), and the vertical receiving cavity (4133) is provided with an internal thread at the corresponding position.

9. The capping machine with a pressure self-regulating mechanism according to claim 8, characterized in that, Scales (6) are arranged at the place where the adjusting mechanism (413) is inserted into the receiving cavity (4111) and at the place where the cutter wheel rotating shaft (4142) is inserted into the vertical receiving cavity (4133).

Images