Rotary capping machine

Abstract

The present application discloses a rotary capping machine, which includes an equipment body, a loading mechanism, a cap feeding mechanism, a capping mechanism and a unloading mechanism. The equipment body defines a loading area, a capping area and a unloading area. The loading mechanism and the cap feeding mechanism are arranged in the loading area, the capping mechanism is arranged in the capping area, and the unloading mechanism is arranged in the unloading area. The loading mechanism is used to transfer the container to be capped from the loading area to the capping area. The cap feeding mechanism is used to transfer the cap from the loading area to the capping area. The capping mechanism is used to tighten the cap transferred to the capping area onto the container. The unloading mechanism is used to transfer the container that has completed capping from the capping area to the unloading area.

Description

Technical Field

[0001] The utility model relates to the technical field of capping machines, in particular to a rotary capping machine. Background Art

[0002] A capping machine is a machine that screws a cap onto the mouth of a bottle or jar containing a liquid or semi-solid to prevent leakage of the liquid or semi-solid in the container to be capped.

[0003] First, the capping machine continuously transports the caps and containers to be capped to the capping position. Then, the capping head of the capping machine grabs the caps and screws them onto the mouth of the container to be capped by high-speed rotation. Finally, the capping machine unloads the capped containers one by one, and the whole capping operation is completed by this reciprocating process.

[0004] It is understandable that in the actual operation process, the capping machine needs to meet the requirements of capping operations for containers with different cross-sectional areas. However, usually, during the capping process, the part of the capping machine that fixes the container cannot be adjusted. In other words, if the size of the next batch of containers to be capped that are delivered to the capping position changes, the operator must power off the running capping machine and then manually adjust the position of the fixed containers to be capped on the capping machine. However, it is difficult to manually adjust the appropriate position of the container to be capped on the capping machine. Careless operation may cause the container to fall from the fixed position of the capping machine during the capping process, which undoubtedly reduces the working efficiency of the capping machine. Utility Model Content

[0005] In order to solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides a rotary capping machine, wherein the rotary capping machine comprises:

[0006] The equipment body defines a loading area, a capping area, and a unloading area;

[0007] A feeding mechanism, the feeding mechanism is arranged in the feeding area, the feeding mechanism comprises a feeding conveyor, a first rotating member, a first arc plate and a first translation driving member, the feeding conveyor forms a first inlet and a first outlet, the first rotating member is arranged close to the first outlet, the first rotating member forms a plurality of first clamping grooves with the same intervals, the first arc plate is horizontally installed close to the first rotating member, the first arc plate and the first clamping groove form a first placement space, the containers to be screwed with caps are sequentially transferred from the first inlet to the first outlet, and further the first arc plate is arranged on the first translation driving member, the first translation driving member drives the first arc plate to move away from or close to the center of the first rotating member in the horizontal direction, so that the size of the first placement space is adjustable;

[0008] A cap feeding mechanism, which is arranged in the feeding area and is used to transfer the caps from the feeding area to the cap screwing area;

[0009] A capping mechanism, the capping mechanism is arranged in the capping area, the capping mechanism comprises a third rotating member, a third curved plate and a second translation driving member, the third rotating member is arranged close to the first rotating member and the second rotating member, the third rotating member extends in a direction away from its own center to form a plurality of clamping grooves with equal intervals, the third curved plate is horizontally installed close to the third rotating member, the third curved plate and the clamping grooves form a third placement space, the third curved plate is arranged on the second translation driving member, the second translation driving member drives the third curved plate to move away from or close to the center of the third rotating member in a horizontal direction, so that the size of the third placement space is adjustable;

[0010] A material unloading mechanism, which is arranged in the material unloading area, and includes a material unloading conveying member, a fourth rotating member, a fourth curved plate and a third translation driving member, the material unloading conveying member forms a third inlet and a third outlet, the fourth rotating member is arranged close to the third inlet, the fourth curved plate is horizontally installed close to the fourth rotating member, the fourth curved plate and the third clamping groove form a fourth placement space, the fourth curved plate is arranged on the third translation driving member, and the third translation driving member drives the fourth curved plate to move in a horizontal direction away from or close to the center of the fourth rotating member, so that the size of the fourth placement space is adjustable.

[0011] According to an embodiment of the utility model, the cover feeding mechanism includes a cover feeding conveyor, a cover feeding drive, a second rotating member and a second arc plate, the cover feeding conveyor forms a second inlet and a second outlet, the second outlet is close to the cover rotating area, the cover feeding conveyor is drivably arranged on the cover feeding drive, the second rotating member is drivably and rotatably installed horizontally around its own center of circle in the loading area, the second rotating member is arranged close to the second outlet, the second rotating member forms a plurality of second clamping grooves with equal intervals, the second arc plate is horizontally installed close to the second rotating member, and the second arc plate and the second clamping groove both form a second placement space.

[0012] According to one embodiment of the utility model, the screw cap mechanism also includes a rotating central axis and a screw cap member, the rotating central axis is drivable and installed in the screw cap area to rotate around its own center of circle, the rotating central axis is set at a predetermined height of the device body, the rotating central axis is installed parallel to the third rotating member, and the rotating central axis is set to be separated from the third rotating member by a predetermined distance.

[0013] According to an embodiment of the utility model, one end of the rotary cover member is vertically mounted on the rotating central axis, so that the rotary cover member can rotate around the center of the rotating central axis as the rotating central axis rotates.

[0014] According to an embodiment of the utility model, the unloading mechanism further comprises an unloading driving member, the unloading conveying member is drivably arranged on the unloading driving member, and the unloading driving member drives the unloading conveying member to convey the container on which the cap has been screwed on from the third inlet to the third outlet.

[0015] According to an embodiment of the utility model, the loading mechanism further includes a loading drive, the loading conveyor is drivably disposed on the loading drive, and the loading drive drives the loading conveyor to convey the container from the first inlet to the first outlet.

[0016] According to an embodiment of the utility model, the rotation direction of the first rotating member is set to be the same as the conveying direction of the loading conveyor member, and the rotation direction of the fourth rotating member is set to be the same as the conveying direction of the unloading conveyor member.

[0017] According to an embodiment of the present invention, the sizes of the first placement space, the third placement space and the fourth placement space are adapted to the size of the cross-section of the bottle body of the container, and the size of the second placement space is adapted to the cross-sectional area of ​​the lid.

[0018] According to an embodiment of the present invention, the rotation direction of the second rotating member is set to be the same as the conveying direction of the cap conveying member.

[0019] According to an embodiment of the present invention, the third rotating member and the first rotating member rotate in opposite directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A stereoscopic view from one viewing angle of the rotary capping machine of the utility model is shown.

[0021] Figure 2 A stereoscopic view from another viewing angle of the rotary capping machine of the utility model is shown.

[0022] Figure 3 A three-dimensional diagram of the feeding mechanism of the rotary capping machine of the utility model is shown.

[0023] Figure 4 A three-dimensional diagram of the cap feeding mechanism of the rotary capping machine of the utility model is shown.

[0024] Figure 5 A stereoscopic diagram of the capping mechanism and the feeding mechanism of the rotary capping machine of the utility model is shown. DETAILED DESCRIPTION

[0025] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] refer to Figures 1 to 5 A rotary capping machine according to a preferred embodiment of the utility model will be described in detail below. The rotary capping machine is used to automatically tighten a cap 800 onto the bottle mouth of a container 900 to be capped containing a liquid or a semi-solid to prevent leakage of the liquid or semi-solid in the container 900, and then the container 900 with the cap 800 tightened is sequentially unloaded from the rotary capping machine.

[0029] The rotary capping machine includes an equipment body 10, a loading mechanism 20, a cap feeding mechanism 30, a capping mechanism 40 and a lowering mechanism 50. The equipment body 10 defines a loading area 101, a capping area 102 and a lowering area 103. The loading mechanism 20 and the cap feeding mechanism 30 are arranged in the loading area 101, the capping mechanism 40 is arranged in the capping area 102, and the lowering mechanism 50 is arranged in the lowering area 103. The loading mechanism 20 is used to transfer the container 900 to be capped from the loading area 101 to the capping area 102. The cap feeding mechanism 30 is used to transfer the cap 800 from the loading area 101 to the capping area 102. The capping mechanism 40 is used to tighten the cap 800 transferred to the capping area 102 onto the container 900. The unloading mechanism 50 is used to transfer the containers 900 that have completed capping from the capping area 102 to the unloading area 103 .

[0030] Specifically, the feeding mechanism 20 includes a feeding conveyor 21, a feeding drive 22 and a first rotating member 23. In this embodiment, the feeding conveyor 21 is implemented as a conveyor belt, the feeding drive 22 is implemented as a motor, and the first rotating member 23 is implemented as a turntable.

[0031] The loading conveyor 21 is installed in the loading area 101. The loading conveyor 21 forms a first inlet 2101 and a first outlet 2102, and the first outlet 2102 is close to the capping area 102. The loading conveyor 21 is drivably arranged on the loading drive 22, and the loading drive 22 drives the loading conveyor 21 to transfer the container 900 from the first inlet 2101 to the first outlet 2102.

[0032] The first rotating member 23 is horizontally installed in the loading area 101 so as to be driven to rotate around its own center, and is disposed close to the first outlet 2102 of the loading conveyor 21. The first rotating member 23 forms a plurality of first engaging grooves 2301 with equal intervals.

[0033] It should be noted that the rotation direction of the first rotating member 23 is set to be the same as the conveying direction of the loading conveyor 21. In this way, when the first rotating member 23 is driven to rotate continuously, until the first clamping groove 2301 is aligned with the first outlet 2102. At this time, the containers 900 conveyed from the first inlet 2101 to the first outlet 2102 are sequentially clamped into the first clamping groove 2301 under the continuous conveyance of the loading conveyor 21 and the continuous rotation of the first rotating member 23. Further, the containers 900 on the first clamping grooves 2301 rotate around the center of the first rotating member 23 as the first rotating member 23 rotates.

[0034] It is understandable that the first rotating member 23 continuously rotates to generate centrifugal force, so that the container 900 transferred to the first engaging groove 2301 is easily thrown out from the first engaging groove 2301 .

[0035] The feeding mechanism 20 further includes a first arc plate 24. The first arc plate 24 is horizontally mounted near the first rotating member 23, and a predetermined distance is separated between the first arc plate 24 and the first rotating member 23, so that each of the first engaging grooves 2301 of the first arc plate 24 and the first rotating member 23 forms a first placement space 2302.

[0036] The size of the first placement space 2302 is adapted to the size of the cross-section of the bottle body of the container 900 , so that the container 900 can be just fixed in the first placement space 2302 to prevent the container 900 from being thrown out due to the centrifugal force generated when the first rotating member 23 rotates.

[0037] It is worth mentioning that the feeding mechanism 20 further includes a first translation driving member 25. The first arc plate 24 is disposed on the first translation driving member 25, and the first translation driving member 25 drives the first arc plate 24 to move away from or close to the center of the first rotating member 23 in the horizontal direction, so that the distance between the first arc plate 24 and the first rotating member 23 is adjustable, that is, the size of the first placement space 2302 is adjustable. In this way, the first arc plate 24 moves away from or close to the center of the first rotating member 23 in the horizontal direction, so that the containers 900 with different cross-sectional sizes can be fixed in the first placement space 2302.

[0038] In this embodiment, the first translation driving member 25 is implemented as a screw motor. It can be understood that when the rotary capping machine is working, the first translation driving member 25 can drive the first arc-shaped plate 24 to move horizontally to adjust the size of the first placement space 2302, without the operator manually stopping the rotary capping machine, thereby ensuring the smoothness of the rotary capping machine.

[0039] Preferably, a sensor is also installed at the first outlet 2102 of the loading conveyor 21. The sensor is arranged to be in communication connection with the first translation drive 25. The sensor obtains the cross-sectional size of the container 900 transmitted to the first outlet 2102 by scanning, and transmits a signal to the first translation drive 25, and the first translation drive 25 further controls the first arc plate 24 to move away from or close to the center of the first rotating member 23 until the size of the first placement space 2302 is able to fix the container 900.

[0040] The cap feeding mechanism 30 includes a cap feeding conveyor 31, a cap feeding driving member 32 and a second rotating member 33. In this embodiment, the cap feeding conveyor 31 is implemented as a conveyor belt, the cap feeding driving member 32 is implemented as a motor, and the second rotating member 33 is implemented as a turntable.

[0041] The cap conveying member 31 is installed in the loading area 101. The cap conveying member 31 forms a second inlet 3101 and a second outlet 3102, and the second outlet 3102 is close to the capping area 102. The cap conveying member 31 is drivably arranged on the cap conveying driving member 32, and the cap conveying driving member 32 drives the cap conveying member 31 to convey the cap 800 from the second inlet 3101 to the second outlet 3102.

[0042] The second rotating member 33 is horizontally installed in the loading area 101 so as to be driven to rotate around its own center of circle, and the second rotating member 33 is arranged near the second outlet 3102 of the cap feeding conveying member 31. The second rotating member 33 forms a plurality of second engaging grooves 3301 at the same intervals. The rotation direction of the second rotating member 33 is arranged to be the same as the conveying direction of the cap feeding conveying member 31.

[0043] In this way, the second rotating member 33 is driven to rotate continuously until the second engaging groove 3301 is aligned with the second outlet 3102. At this time, the cap 800 conveyed from the second inlet 3101 to the second outlet 3102 is engaged in the second engaging groove 3301 under the continuous conveyance of the cap conveying member 31 and the continuous rotation of the second rotating member 33. Furthermore, the caps 800 on the plurality of second engaging grooves 3301 rotate around the center of the second rotating member 33 as the second rotating member 33 rotates.

[0044] It is understandable that the second rotating member 33 generates centrifugal force during the continuous rotation, so that the cover 800 transferred to the second clamping groove 3301 is easily thrown out from the second clamping groove 3301 .

[0045] The cover feeding mechanism 30 further includes a second arc plate 34. The second arc plate 34 is horizontally mounted near the second rotating member 33, and a predetermined distance is separated between the second arc plate 34 and the second rotating member 33, so that each of the second engaging grooves 3301 of the second arc plate 34 and the second rotating member 33 forms a second placement space 3302. The size of the second placement space 3302 is adapted to the cross-sectional area of ​​the cover 800, so that the cover 800 can be fixed in the second placement space 3302, and the cover 800 is prevented from being thrown out due to the centrifugal force generated when the second rotating member 33 rotates.

[0046] The cover screwing mechanism 40 includes a third rotating member 41, which is installed in the cover screwing area 102 and is disposed close to the first rotating member 23 and the second rotating member 33. In this embodiment, the third rotating member 41 is implemented as a rotating disk, and the third rotating member 41 can be driven to rotate around its own center.

[0047] The third rotating member 41 extends in a direction away from its own center to form a plurality of clamping grooves 4101 with equal intervals, so as to clamp the bottle mouth of the container 900 upward in the clamping grooves 4101 to facilitate the subsequent capping operation.

[0048] Preferably, the clamping groove 4101 is implemented with a narrow upper opening and a wide lower opening, so that the container 900 can be more stably clamped in the clamping groove 4101.

[0049] It should be noted that the third rotating member 41 rotates in opposite directions to the first rotating member 23. Thus, after the first rotating member 23 and the third rotating member 41 rotate until the clamping groove 4101 is aligned with the first clamping groove 2301, the container 900 in the first clamping groove 2301 can be transferred to the clamping groove 4101.

[0050] It is understandable that the third rotating member 41 generates centrifugal force during the continuous rotation, so that the container 900 is easily thrown out of the clamping groove 4101.

[0051] The screw cap mechanism 40 further includes a third curved plate 42, which is horizontally mounted near the third rotating member 41, and the third rotating member 41 is spaced a predetermined distance apart, so that the third curved plate 42 and each of the clamping grooves 4101 form a third placement space 4102. The size of the third placement space 4102 is adapted to the cross-sectional size of the container 900, so that the container 900 can be fixed in the third placement space 4102, and the container 900 is prevented from being thrown out due to the centrifugal force generated when the third rotating member 41 rotates.

[0052] It is worth mentioning that the capping mechanism 40 further includes a second translation driving member 43. In this embodiment, the second translation driving member 43 is implemented as a screw motor. The third curved plate 42 is disposed on the second translation driving member 43. The second translation driving member 43 drives the third curved plate 42 to move away from or close to the center of the third rotating member 41 in the horizontal direction, so that the distance between the third curved plate 42 and the third rotating member 41 is adjustable, and the size of the third placement space 4102 is also adjustable. In this way, the containers 900 with different cross-sectional sizes can be fixed in the third placement space 4102.

[0053] Furthermore, the cover screwing mechanism 40 further includes a rotating central axis 44 and at least one cover screwing member 45 .

[0054] The rotating central axis 44 is drivably mounted on the cover rotation area 102 so as to rotate around its own center. The rotating central axis 44 is disposed at a predetermined height of the device body 10, and is mounted parallel to the third rotating member 41, and the rotating central axis 44 is disposed at a predetermined distance from the third rotating member 41.

[0055] One end of the rotary cover member 45 is vertically mounted on the rotating central shaft 44 , so that the rotary cover member 45 can rotate around the center of the rotating central shaft 44 as the rotating central shaft 44 rotates.

[0056] Furthermore, the cover screw 45 is also equipped with a hydraulic telescopic rod, so that the cover screw 45 can move up and down away from or close to the rotating central axis 44. The cover screw 45 forms a clamping cover part 451 at one end away from the rotating central axis, and the clamping cover part 451 is equipped with a negative pressure pump, so that the cover 800 can be sucked onto the clamping cover part 451 under the negative pressure of the negative pressure pump.

[0057] Specifically, the first rotating member 23 and the third rotating member 41 are driven to rotate, so that the container 900 in the first clamping groove 2301 of the first rotating member 23 is transferred to the clamping groove 4101 of the third rotating member 41. The second rotating member 33 is driven to rotate, so that the second clamping groove 3301 of the second rotating member 33 and the clamping groove 4101 of the third rotating member 41 are constantly approaching or moving away from each other.

[0058] At the same time, the rotating central axis 44 is driven to rotate and drives the cap screwing member 45 to rotate together, and the cap screwing member 45 is lowered to the cap clamping portion 451 close to the cap 800 in the second clamping groove 3301 through the hydraulic telescopic rod. Under the negative pressure of the negative pressure pump, the cap 800 is adsorbed from the second clamping groove 3301 to the cap clamping portion 451. The cap screwing member 45 quickly rotates the cap 800 to the bottle mouth of the container 900 in the first clamping groove 2301. After the cap screwing is completed, the cap screwing member 45 is lifted up and away from the container 900 by the hydraulic telescopic rod, so as to prevent the cap screwing member 45 from accidentally hitting the container 900 during the rotation of the rotating central axis 44.

[0059] The unloading mechanism 50 includes an unloading conveying member 51, an unloading driving member 52 and a fourth rotating member 53. In this embodiment, the unloading conveying member 51 is implemented as a conveyor belt, the unloading driving member 52 is implemented as a motor, and the fourth rotating member 53 is implemented as a turntable.

[0060] The unloading conveyor 51 is installed in the unloading area 103. The unloading conveyor 51 forms a third inlet 5101 and a third outlet 5102, and the third inlet 5101 is close to the capping area 102. The unloading conveyor 51 is drivably arranged on the unloading driving member 52, and the unloading driving member 52 drives the unloading conveyor 51 to convey the container 900 that has completed the capping from the third inlet 5101 to the third outlet 5102.

[0061] The fourth rotating member 53 is horizontally installed in the unloading area 103 so as to be drivable and rotatable around its own center of circle, and the fourth rotating member 53 is arranged near the third inlet 5101 of the unloading conveying member 51. The fourth rotating member 53 is installed below the second rotating member 33 and is separated from the second rotating member 33 by a predetermined distance. The fourth rotating member 53 forms a plurality of third engaging grooves 5301 with the same interval.

[0062] It should be noted that the rotation direction of the fourth rotating member 53 is set to be the same as the conveying direction of the unloading conveying member 51. In this way, when the fourth rotating member 53 is driven to rotate continuously, until the third clamping groove 5301 is aligned with the third inlet 5101. At this time, the containers 900 that have been completed by the screw capping and are conveyed from the third inlet 5101 to the third outlet 5102 are sequentially clamped into the third clamping groove 5301 under the continuous conveyance of the unloading conveying member 51 and the continuous rotation of the fourth rotating member 53. Further, the containers 900 on the third clamping grooves 5301 rotate around the center of the fourth rotating member 53 as the fourth rotating member 53 rotates.

[0063] It can be understood that the fourth rotating member 53 continuously rotates to generate centrifugal force, so that the container 900 transferred to the third engaging groove 5301 is easily thrown out of the third engaging groove 5301 .

[0064] The unloading mechanism 50 further includes a fourth curved plate 54. The fourth curved plate 54 is horizontally mounted near the fourth rotating member 53, and a predetermined distance is separated between the fourth curved plate 54 and the fourth rotating member 53, so that each of the third engaging grooves 5301 of the fourth curved plate 54 and the fourth rotating member 53 forms a fourth placement space 5302.

[0065] The size of the fourth placement space 5302 is adapted to the size of the cross-section of the bottle body of the container 900 , so that the container 900 can be just fixed in the fourth placement space 5302 to prevent the container 900 from being thrown out due to the centrifugal force generated when the fourth rotating member 53 rotates.

[0066] It is worth mentioning that the unloading mechanism 50 further includes a third translation driving member 55. The fourth curved plate 54 is disposed on the third translation driving member 55, and the third translation driving member 55 drives the fourth curved plate 54 to move away from or close to the center of the fourth rotating member 53 in the horizontal direction, so that the distance between the fourth curved plate 54 and the fourth rotating member 53 is adjustable, that is, the size of the fourth placement space 5302 is adjustable. In this way, the fourth curved plate 54 moves away from or close to the center of the fourth rotating member 53 in the horizontal direction, so that the containers 900 with different cross-sectional sizes can be fixed in the fourth placement space 5302.

[0067] In this embodiment, the third translation driving member 55 is implemented as a screw motor. It can be understood that while the rotary capping machine is working, the third translation driving member 55 can drive the fourth arc-shaped plate 54 to move horizontally to adjust the size of the fourth placement space 5302, without the operator manually stopping the rotary capping machine, thereby ensuring the smoothness of the rotary capping machine.

[0068] Preferably, the third inlet 5101 of the unloading conveyor 51 is further provided with a sensor. The sensor is arranged to be in communication connection with the third translation drive 55. The sensor obtains the cross-sectional size of the container 900 conveyed to the third inlet 5101 by scanning, and transmits a signal to the third translation drive 55, and the third translation drive 55 further controls the fourth curved plate 54 to move away from or close to the center of the fourth rotating member 53 until the size of the fourth placement space 5302 is able to fix the container 900.

[0069] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Rotary capping machine, characterized in that, The rotary capping machine comprises: The equipment body defines a loading area, a capping area, and a unloading area; A feeding mechanism, the feeding mechanism is arranged in the feeding area, the feeding mechanism comprises a feeding conveyor, a first rotating member, a first arc plate and a first translation driving member, the feeding conveyor forms a first inlet and a first outlet, the first rotating member is arranged close to the first outlet, the first rotating member forms a plurality of first clamping grooves with the same intervals, the first arc plate is horizontally installed close to the first rotating member, the first arc plate and the first clamping groove form a first placement space, the containers to be screwed with caps are sequentially transferred from the first inlet to the first outlet, and further the first arc plate is arranged on the first translation driving member, the first translation driving member drives the first arc plate to move away from or close to the center of the first rotating member in the horizontal direction, so that the size of the first placement space is adjustable; A cap feeding mechanism, which is arranged in the feeding area and is used to transfer the caps from the feeding area to the cap screwing area; the cap feeding mechanism comprises a second cap feeding rotating member; A capping mechanism, the capping mechanism is arranged in the capping area, the capping mechanism comprises a third rotating member, a third curved plate and a second translation driving member, the third rotating member is arranged close to the first rotating member and the second rotating member, the third rotating member extends in a direction away from its own center to form a plurality of clamping grooves with equal intervals, the third curved plate is horizontally installed close to the third rotating member, the third curved plate and the clamping grooves form a third placement space, the third curved plate is arranged on the second translation driving member, the second translation driving member drives the third curved plate to move away from or close to the center of the third rotating member in a horizontal direction, so that the size of the third placement space is adjustable; A material unloading mechanism, which is arranged in the material unloading area, and includes a material unloading conveying member, a fourth rotating member, a fourth arc plate and a third translation driving member, wherein the fourth rotating member forms a plurality of third clamping grooves with equal intervals; the material unloading conveying member forms a third inlet and a third outlet, the fourth rotating member is arranged close to the third inlet, the fourth arc plate is horizontally installed close to the fourth rotating member, the fourth arc plate and the third clamping groove form a fourth placement space, the fourth arc plate is arranged on the third translation driving member, and the third translation driving member drives the fourth arc plate to move in a horizontal direction away from or close to the center of the fourth rotating member, so that the size of the fourth placement space is adjustable.

2. The rotary capping machine according to claim 1, characterized in that: The cap feeding mechanism includes a cap feeding conveyor, a cap feeding driving member and a second arc plate, the cap feeding conveyor forms a second inlet and a second outlet, the second outlet is close to the cap rotating area, the cap feeding conveyor is drivably arranged on the cap feeding driving member, the second rotating member is drivably and horizontally installed in the loading area around its own center of circle, the second rotating member is arranged close to the second outlet, the second rotating member forms a plurality of second clamping grooves with equal intervals, the second arc plate is horizontally installed close to the second rotating member, and the second arc plate and the second clamping groove both form a second placement space.

3. The rotary capping machine according to claim 2, characterized in that: The cap screwing mechanism also includes a rotating central axis and a cap screwing member. The rotating central axis is installed in the cap screwing area so as to be drivable and rotatable around its own center of circle. The rotating central axis is arranged at a predetermined height of the device body. The rotating central axis is installed parallel to the third rotating member, and the rotating central axis is arranged to be separated from the third rotating member by a predetermined distance.

4. The rotary capping machine according to claim 3, characterized in that: One end of the rotary cover member is vertically mounted on the rotating central axis, so that the rotary cover member can rotate around the center of the rotating central axis as the rotating central axis rotates.

5. The rotary capping machine according to claim 2, characterized in that: The unloading mechanism further comprises an unloading driving member, the unloading conveying member is drivably disposed on the unloading driving member, and the unloading driving member drives the unloading conveying member to convey the container on which the cap has been screwed on from the third inlet to the third outlet.

6. The rotary capping machine according to claim 5, characterized in that: The loading mechanism further includes a loading drive, the loading conveyor is drivably disposed on the loading drive, and the loading drive drives the loading conveyor to transfer the container from the first inlet to the first outlet.

7. The rotary capping machine according to claim 6, characterized in that: The rotation direction of the first rotating member is set to be the same as the conveying direction of the loading conveying member, and the rotation direction of the fourth rotating member is set to be the same as the conveying direction of the unloading conveying member.

8. The rotary capping machine according to claim 7, characterized in that: The sizes of the first placement space, the third placement space and the fourth placement space are adapted to the size of the cross-section of the bottle body of the container, and the size of the second placement space is adapted to the size of the cross-sectional area of ​​the cover.

9. The rotary capping machine according to claim 2, characterized in that: The rotation direction of the second rotating member is set to be the same as the conveying direction of the cap conveying member.

10. The rotary capping machine according to claim 1, characterized in that: The third rotating member and the first rotating member rotate in opposite directions.

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