A continuous capping device

Abstract

The utility model relates to screwing device technical field, specifically disclose a continuous screwing device, include: hoist feeding device, hoist feeding device includes hopper and hoist mechanism, hoist mechanism includes conveyer belt, discharge chute, back material mechanism and two blow mouth, the surface of conveyer belt is equipped with the cross bar for placing the bottle cap, back material mechanism includes back material chute and back material passageway, back material chute is butt joint with conveyer belt, and the bottom wall department of back material chute is equipped with the discharge port, and the discharge port communicates one end of back material passageway, and the other end of back material passageway is connected hopper, conveying device, and the conveying direction of conveying device is equipped with screwing station, clamping device, clamping device is used for clamping the bottle that waits for screwing cap, screwing device, screwing device is used for screwing the bottle cap on the bottle that waits for screwing cap. The utility model has solved the existing screwing device when the recovery of bottle cap feeding is completed, because the position of bottle cap falling is not fixed, and part bottle cap can possibly fall to the outside of device, thereby leading to the problem of the reduction of production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cap screwing device technology, and in particular to a continuous cap screwing device. Background Technology

[0002] In traditional capping machines, bottle caps are fed using a lifting and feeding device. During operation, this device runs continuously. Once feeding is complete, excess caps are typically collected by allowing them to fall naturally. However, because the falling locations are not fixed, some caps may fall onto the ground or other undesignated areas outside the machine. This not only reduces production efficiency but also leads to frequent cap replenishment during production, increasing production costs and operational complexity. Utility Model Content

[0003] To address the problem that existing capping devices sometimes drop caps outside the device during the cap feeding and recycling process, resulting in reduced production efficiency, this invention provides a continuous capping device.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] An embodiment of this utility model provides a continuous cap-screwing device, comprising:

[0006] A lifting and feeding device is used to feed bottle caps. The lifting and feeding device includes a hopper and a lifting mechanism. The lifting mechanism includes a conveyor belt, a discharge chute for discharging bottle caps, a return mechanism for returning bottle caps, and two air inlets. The surface of the conveyor belt is provided with several crossbars for placing bottle caps. The two air inlets are used to blow the bottle caps located on the crossbars toward the discharge chute and the return mechanism, respectively. The return mechanism includes a return chute and a return channel. The return chute is connected to the conveyor belt. The bottom wall of the return chute is provided with a discharge port. The discharge port is connected to one end of the return channel, and the other end of the return channel is connected to the hopper.

[0007] A conveying device for conveying bottles to be capped, wherein a capping station is provided in the conveying direction of the conveying device;

[0008] A clamping device for clamping the bottle to be capped;

[0009] A tightening device is provided at the capping station to tighten the cap onto the bottle to be capped.

[0010] According to some embodiments of the present invention, the discharge chute and the return chute are both located on one side of the top of the conveyor belt, and the two air inlets are respectively located on the other side of the top of the conveyor belt.

[0011] According to some embodiments of the present invention, the conveyor belt is provided with a first baffle, which is positioned above the path of the air blowing port toward the discharge chute or the return chute.

[0012] According to some embodiments of the present invention, a second baffle is provided at the connection between the hopper and the return channel to prevent the bottle cap from flying off.

[0013] According to some embodiments of this utility model, the height of the crossbar is matched with the height of the bottle cap.

[0014] According to some embodiments of the present invention, the clamping device includes two clamping arms that can move perpendicular to the conveying direction of the conveying device.

[0015] According to some embodiments of the present invention, the tightening device includes three or more cap-tightening wheels and a first driving device for driving the cap-tightening wheels to rotate, wherein the cap-tightening wheels are arranged in a circular array around the center of the cap-tightening station.

[0016] According to some embodiments of the present invention, the surface of the cap-tightening wheel is provided with friction teeth.

[0017] According to some embodiments of the present invention, the tightening device further includes a fixing plate and a second driving device for driving the cap tightening wheel to move. The second driving device is disposed on the fixing plate. There are four cap tightening wheels. The fixing plate has four through slots. The four cap tightening wheels pass through the through slots respectively.

[0018] According to some embodiments of the present invention, the cap-tightening device further includes a pressure roller that can move in a vertical direction.

[0019] This utility model has at least the following beneficial effects: By setting up a lifting and feeding device, the lifting mechanism of this device has a crossbar on the surface of the conveyor belt for placing bottle caps. The air blowing port can blow the bottle caps towards the return mechanism. The return mechanism sends the bottle caps back to the hopper through the return trough and return channel, realizing automatic feeding and recycling of bottle caps, preventing bottle caps from falling outside the device, avoiding the trouble of frequent manual replenishment of bottle caps, improving production efficiency and reducing labor costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0021] Figure 2This is a schematic diagram of the tightening device according to an embodiment of the present invention;

[0022] Figure 3 This is a bottom view of the tightening device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the clamping device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a lifting and feeding device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the lifting and feeding device according to an embodiment of the present invention, with part of the first baffle removed. Detailed Implementation

[0026] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0027] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intermediary element (e.g., the third element) between the element and the other element.

[0029] An embodiment of this utility model provides a continuous cap-screwing device, such as... Figure 1-6 As shown, it includes:

[0030] The lifting and feeding device 100 is used to feed bottle caps. The lifting and feeding device 100 includes a hopper 110 and a lifting mechanism 120. The lifting mechanism 120 includes a conveyor belt 121, a discharge chute 124 for discharging bottle caps, a return mechanism 125 for returning bottle caps, and two air nozzles 129. The surface of the conveyor belt 121 is provided with several crossbars 122 for placing bottle caps. The two air nozzles 129 are used to blow the bottle caps located on the crossbars 122 toward the discharge chute 124 and the return mechanism 125, respectively. The return mechanism 125 includes a return chute 126 and a return channel 128. The return chute 126 is connected to the conveyor belt 121. The bottom wall of the return chute 126 is provided with a discharge port 127. The discharge port 127 is connected to one end of the return channel 128, and the other end of the return channel 128 is connected to the hopper 110.

[0031] The conveying device 200 is used to convey bottles to be capped, and the conveying device 200 has a capping station in the conveying direction;

[0032] Clamping device 300, used to clamp a bottle to be capped;

[0033] Tightening device 400, capping device is set at the capping station, tightening device 400 is used to screw the cap onto the bottle to be capped.

[0034] The hopper 110 is used to store a large number of bottle caps and is typically designed in a funnel shape or with a sloping bottom to allow the caps to slide automatically towards the lifting mechanism 120 under gravity. The bottom of the hopper 110 connects to the conveyor belt 121 of the lifting mechanism 120, ensuring that the bottle caps can smoothly enter the lifting process. The conveyor belt 121 is inclined and has several crossbars 122 mounted on its surface, with gaps between the crossbars 122 to accommodate the bottle caps. The conveyor belt 121 circulates under the drive of a motor, lifting the bottle caps on the crossbars 122 from bottom to top. The spacing and shape of the crossbars 122 are designed according to the size of the bottle caps to ensure that the bottle caps can be stably placed on the crossbars 122, preventing them from falling or becoming misaligned during the lifting process. Two air inlets 129 are provided in the top area of ​​the conveyor belt 121, used to blow the bottle caps towards the discharge chute 124 or the return mechanism 125, respectively. The position and angle of the air inlets 129 are precisely adjusted to ensure that the bottle caps can be accurately separated. The first air inlet 129 blows bottle caps towards the discharge chute 124 for normal discharge. The second air inlet 129 blows bottle caps towards the return mechanism 125 for recycling non-compliant or excess bottle caps. The return chute 126 connects to the top of the conveyor belt 121 to receive bottle caps blown back by the air inlets 129. The bottom wall of the return chute 126 has a discharge outlet 127 through which bottle caps enter the return channel 128. The return channel 128 is inclined, with one end connected to the discharge outlet 127 of the return chute 126 and the other end connected to the hopper 110. Under the action of gravity, the bottle caps slide back to the hopper 110 along the return channel 128, achieving recycling.

[0035] The conveying device 200 is responsible for orderly transporting bottles to the capping station. The conveying device 200 includes a conveyor belt 121 or conveyor chain. Using a stable conveyor belt 121 or conveyor chain ensures the bottles remain stable during transport, preventing tipping or displacement. The conveying speed of the conveyor belt 121 or conveyor chain can be adjusted according to the capping speed to achieve synchronous operation. One or more capping stations are set in the conveying direction of the conveying device 200, each corresponding to a tightening device 400. A positioning mechanism may be provided at the capping station to ensure the bottle is in the correct position during capping.

[0036] The clamping device 300 is used to secure the bottle during the capping process, preventing it from rotating or moving. The clamping device 300 may include a clamping mechanism, employing pneumatic or electric clamping mechanisms such as jaws or clamping blocks, capable of quickly and stably clamping the bottle. The clamping force of the clamping mechanism is adjustable to accommodate bottles of different sizes and materials. The clamping device 300 is linked with the conveying device 200 and the tightening device 400 to ensure that the bottle is automatically clamped upon reaching the capping station and automatically released after the cap is tightened.

[0037] The tightening device 400 is the actuating component of this continuous capping device, responsible for accurately tightening the cap onto the bottle. The tightening device 400 includes a tightening mechanism and a lifting mechanism. The tightening mechanism can use an electric or pneumatic tightening shaft, equipped with a torque sensor to precisely control the tightening torque, ensuring the cap is tightened properly without being too tight or too loose. A tightening head matching the shape of the bottle cap is installed at the end of the tightening shaft to ensure the cap does not slip or get damaged during tightening. The tightening device 400 is equipped with a lifting mechanism, such as a cylinder or electric slide, which lowers during cap tightening to bring the tightening head into contact with the bottle cap, and rises after tightening to prepare for the next operation. The tightening device 400 works in conjunction with the conveying device 200 and the clamping device 300. After the bottle is in position, the clamping device 300 clamps the bottle, the tightening device 400 lowers and activates the tightening shaft, and rises after tightening, the clamping device 300 releases, and the bottle continues to be conveyed.

[0038] The working principle of this utility model is as follows:

[0039] First, bottle caps enter the conveyor belt 121 of the lifting mechanism 120 from the hopper 110 and are lifted upwards by the crossbar 122. At the top, the air nozzle 129 blows the bottle caps towards the discharge chute 124 for normal discharge; unwanted bottle caps are blown towards the return mechanism 125 and returned to the hopper 110 via the return channel 128. Then, bottles to be capped are conveyed to the capping station by the conveyor device 200, and the clamping device 300 clamps the bottles. The tightening device 400 starts and tightens the bottle caps onto the bottles. After capping is completed, the clamping device 300 releases. The capped bottles continue to be conveyed to the next process by the conveyor device 200, and new bottles enter the capping station, repeating the above process to achieve continuous capping.

[0040] In some embodiments, the discharge chute 124 and the return chute 126 are both located on one side of the top of the conveyor belt 121, and the two air inlets 129 are respectively located on the other side of the top of the conveyor belt 121.

[0041] Both the discharge chute 124 and the return chute 126 are located on the top side of the conveyor belt 121. This layout allows bottle caps to be discharged and returned on the same side of the conveyor belt 121, simplifying the device structure and reducing space occupation. Concentrating the discharge chute 124 and the return chute 126 on the same side of the conveyor belt 121 makes more efficient use of space, resulting in a more compact device. Discharge and return operations on the same side of the conveyor belt 121 facilitate centralized management and maintenance, and also make it easier to observe the flow of bottle caps. Two air inlets 129 are located on the top of the conveyor belt 121 on the other side. This layout allows the air inlets 129 to face the discharge chute 124 and the return chute 126, forming an effective airflow channel. The air inlets 129 facing the discharge chute 124 and the return chute 126 allow for more precise blowing of bottle caps to designated positions. By adjusting the airflow direction and intensity at the blowing port 129, it can be ensured that the bottle cap can accurately enter the discharge trough 124 or the return trough 126.

[0042] Furthermore, the conveyor belt 121 is provided with a first baffle 123, which is positioned above the path of the air blowing port 129 towards the discharge chute 124 or the return chute 126.

[0043] When the air outlet 129 blows the bottle cap towards the discharge trough 124 or the return trough 126, the airflow may cause some splashing of the bottle cap. The first baffle 123 is positioned above the path of the air outlet 129 towards the discharge trough 124 or the return trough 126, effectively preventing the bottle cap from splashing to other locations during the blowing process. The first baffle 123 ensures that the bottle cap accurately enters the discharge trough 124 or the return trough 126, reducing the possibility of the bottle cap deviating from its target position due to splashing. Simultaneously, the first baffle 123 can guide the airflow from the air outlet 129, making the airflow more concentrated on the bottle cap.

[0044] In some embodiments, a second baffle 111 is provided at the connection between the hopper 110 and the return channel 128 to prevent bottle caps from flying off.

[0045] At the connection between the return channel 128 and the hopper 110, bottle caps re-enter the hopper 110 through the return channel 128. Since the bottle caps in the return channel 128 may have a certain speed and kinetic energy, the second baffle 111 effectively prevents the bottle caps from flying out of the hopper 110 upon entering. This prevents bottle caps from flying out of the hopper 110, avoiding them scattering outside the device and reducing safety hazards to operators and the surrounding environment. Simultaneously, the second baffle 111 also acts as a guide, allowing the bottle caps to enter the hopper 110 more smoothly. By guiding the bottle caps into the hopper 110, it reduces the likelihood of jamming or accumulation during the return process, improving return efficiency.

[0046] In some embodiments, the height of the crossbar 122 is matched with the height of the bottle cap.

[0047] The height of the crossbar 122 is matched with the height of the bottle cap to ensure that the bottle cap is stably placed on the crossbar 122 on the conveyor belt 121 without shaking or rolling. In some embodiments, the crossbar 122 can also serve to screen the front and back of the bottle cap. Some bottle caps have an outwardly protruding rim. In this case, when the rim of the bottle cap faces the conveyor belt 121, the bottle cap may lose its balance due to tilting during the lifting process of the conveyor belt 121 and fall back into the hopper 110. This is because the presence of the rim makes it impossible for the bottle cap to remain horizontal on the conveyor belt 121. When the rim of the bottle cap faces away from the conveyor belt 121, the bottle cap can be stably placed on the crossbar 122 until it is conveyed to the discharge chute 124. This is because when the rim faces away from the conveyor belt 121, the bottle cap can remain horizontal and thus be stably placed on the crossbar 122. This design can automatically screen the front and back of the bottle cap, reduce manual intervention, and improve production efficiency. When packaging bottled products, this device can be used to screen and stabilize bottle caps, ensuring that no errors occur during the cap installation process.

[0048] In some embodiments, the clamping device 300 includes two clamping arms 310 that can move perpendicular to the conveying direction of the conveying device 200.

[0049] The two clamping arms 310 can move perpendicular to the conveying direction of the conveying device 200, thereby clamping the bottle to be capped from both sides and ensuring the bottle remains stable during the capping process. Clamping the bottle from both sides effectively prevents it from shaking or tilting during capping, ensuring the quality of the capping. The two clamping arms 310 can move independently, accommodating bottles of different diameters and improving the versatility and flexibility of the device. The two clamping arms 310 can precisely center the bottle, ensuring the cap is accurately screwed onto the center of the bottle. Precise centering ensures the cap is securely screwed onto the bottle, avoiding capping failures due to inaccurate bottle positioning. This also reduces defects caused by inaccurate bottle positioning, improving production efficiency and product quality. The movement of the clamping arms 310 can be achieved by a cylinder, motor, or other driving device.

[0050] In some embodiments, the tightening device 400 includes three or more capping wheels 410 and a first drive device 420 for driving the capping wheels 410 to rotate, the capping wheels 410 being arranged in a circular array around the center of the capping station.

[0051] The capping rollers 410 are arranged in a circular array around the center of the capping station, ensuring that the cap receives uniform torque during the capping process, thus achieving uniform tightening. By applying force evenly through multiple capping rollers 410, uneven tightening caused by single-point force application is avoided, ensuring the cap is securely screwed onto the bottle. Uniform force application reduces damage to caps or bottles caused by uneven tightening, improving product yield.

[0052] Furthermore, the surface of the capping wheel 410 is provided with friction teeth.

[0053] The friction teeth significantly increase the friction between the capping roller 410 and the bottle cap, ensuring that the capping roller 410 can firmly grip the bottle cap and apply sufficient torque. By increasing friction, the bottle cap can be firmly screwed onto the bottle, avoiding loose caps or slippage caused by insufficient friction.

[0054] In some embodiments, the tightening device 400 further includes a fixing plate 430 and a second driving device 440 for driving the cap-tightening wheels 410 to move. The second driving device 440 is disposed on the fixing plate 430. There are four cap-tightening wheels 410. The fixing plate 430 is provided with four through slots 450. The four cap-tightening wheels 410 pass through the through slots 450 respectively.

[0055] The fixing plate 430 is used to fix and support the capping rollers 410, ensuring that the capping rollers 410 remain stable during operation. The second drive device 440 is used to drive the capping rollers 410 to move, and can adjust the position of the capping rollers 410 according to the size and position of the bottle cap, ensuring that the capping rollers 410 can accurately contact the bottle cap. Through the second drive device 440, the position of the capping rollers 410 can be adjusted to adapt to bottle caps of different diameters and heights, improving the versatility and flexibility of the device. The fixing plate 430 has four through slots 450, through which the four capping rollers 410 pass respectively. This design allows the capping rollers 410 to move within the through slots 450, thereby allowing for flexible adjustment according to the size and position of the bottle cap.

[0056] In some embodiments, the cap screwing device further includes a pressure roller 460 that can move in a vertical direction.

[0057] The clamping roller 460 can move vertically. During the capping process, the clamping roller 460 moves downward, pressing the cap firmly against the bottle to ensure a tight contact between the cap and the bottle. The clamping roller 460 ensures a tight contact between the cap and the bottle, preventing loose capping due to gaps between them. The clamping roller 460 provides additional downward pressure during the capping process, assisting the capping roller 410 in applying torque more effectively, ensuring the cap is securely screwed onto the bottle.

[0058] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A continuous capping device, characterized in that, include: A lifting and feeding device (100) is used to feed bottle caps. The lifting and feeding device (100) includes a hopper (110) and a lifting mechanism (120). The lifting mechanism (120) includes a conveyor belt (121), a discharge chute (124) for discharging bottle caps, a return mechanism (125) for returning bottle caps, and two air inlets (129). The surface of the conveyor belt (121) is provided with several crossbars (122) for placing bottle caps. The two air inlets (129) The device is used to blow bottle caps located on the crossbar (122) toward the discharge trough (124) and the return mechanism (125) respectively. The return mechanism (125) includes a return trough (126) and a return channel (128). The return trough (126) is connected to the conveyor belt (121). The bottom wall of the return trough (126) is provided with a discharge port (127). The discharge port (127) is connected to one end of the return channel (128). The other end of the return channel (128) is connected to the hopper (110). A conveying device (200) is used to convey bottles to be capped, and the conveying device (200) has a capping station in the conveying direction; A clamping device (300) is used to clamp the bottle to be capped; Tightening device (400), the cap tightening device is set on the cap tightening station, the tightening device (400) is used to tighten the cap onto the bottle to be capped.

2. The continuous capping device according to claim 1, characterized in that, The discharge chute (124) and the return chute (126) are both located on the top side of the conveyor belt (121), and the two air inlets (129) are respectively located on the other side of the top of the conveyor belt (121).

3. The continuous capping device according to claim 2, characterized in that, The conveyor belt (121) is provided with a first baffle (123), which is located above the path of the air blowing port (129) towards the discharge trough (124) or the return trough (126).

4. The continuous capping device according to claim 1, characterized in that, The connection between the hopper (110) and the return channel (128) is provided with a second baffle (111) to prevent the bottle cap from flying off.

5. A continuous capping device according to claim 1, characterized in that, The height of the crossbar (122) is matched with the height of the bottle cap.

6. A continuous capping device according to claim 1, characterized in that, The clamping device (300) includes two clamping arms (310) that can move perpendicular to the conveying direction of the conveying device (200).

7. A continuous capping device according to claim 1, characterized in that, The tightening device (400) includes three or more cap-tightening wheels (410) and a first drive device (420) for driving the cap-tightening wheels (410) to rotate, the cap-tightening wheels (410) being arranged in a circular array around the center of the cap-tightening station.

8. A continuous capping device according to claim 7, characterized in that, The surface of the capping wheel (410) is provided with friction teeth.

9. A continuous capping device according to claim 7, characterized in that, The tightening device (400) further includes a fixing plate (430) and a second driving device (440) for driving the cap tightening wheel (410) to move. The second driving device (440) is disposed on the fixing plate (430). There are four cap tightening wheels (410). The fixing plate (430) has four through slots (450). The four cap tightening wheels (410) pass through the through slots (450) respectively.

10. A continuous capping device according to claim 7, characterized in that, The capping device also includes a pressure roller (460) that can move in a vertical direction.

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