Filling and capping machine

Abstract

The invention relates to a filling and capping machine which comprises a conveying belt, a material distributing mechanism is arranged above the conveying belt, a cap screwing manipulator is arranged above the conveying belt at the rear end of the material distributing mechanism, a reverse cap rotating mechanism is arranged above the conveying belt between the material distributing mechanism and the cap screwing manipulator, the material distributing mechanism comprises a bottom pipe, and a notch is formed in the lower end of the bottom pipe. Discharging inclined plates are symmetrically arranged on the side wall of the notch, a material distributing gear is rotationally arranged in the notch, the axis of the material distributing gear and the axis of the bottom pipe are eccentrically arranged, and the tooth tip of the material distributing gear is higher than the top ends of the discharging inclined plates. According to the material distributing mechanism, the direction of the bottle cap can be judged only through cooperation of the material distributing gear and the discharging inclined plate, and the overall structure is light and simple.

Description

Technical Field

[0001] The invention belongs to the technical field of capping, and in particular relates to a filling and capping machine. Background Art

[0002] Disposable bottled water is often sealed with a screw cap so that it can be opened frequently for drinking outdoors. When sealing the cap, it is necessary to ensure that the cap opening faces downward so that the cap can be embedded in the bucket, and that the starting position of the cap thread coincides with the starting position of the bucket thread.

[0003] Therefore, disposable bucket capping needs to be used with a cap sorter or a vibration plate to adjust the opening direction of the bottle cap downwards, so as to facilitate direct rotation and capping. However, the structure of the cap sorter or vibration plate is complex and the equipment is large. The cap sorter often includes a bottle cap conveyor belt, a bottle cap bucket, a capping motor, a photoelectric sensor, a PLC controller, etc. The vibration plate includes a chassis, a spring plate, a vibration coil, a speed regulator, a vibration plate, a material tray, a feeding plate, a protective cover, a controller, a linear feeder, etc. The overall structure is bloated and the cost is high. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a filling and capping machine, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: A filling and capping machine proposed in the present invention includes a conveyor belt for conveying water buckets to each process position, a material distribution mechanism is provided above the conveyor belt, a hopper is provided above the material distribution mechanism, and the hopper and the material distribution mechanism are connected by a pipeline.

[0006] Furthermore, a capping robot is provided above the conveyor belt at the rear end of the material dispensing mechanism.

[0007] Furthermore, a reverse capping mechanism is provided above the conveyor belt between the material dispensing mechanism and the capping robot.

[0008] Furthermore, the material distribution mechanism includes a bottom tube, the upper end of the bottom tube is connected to the pipeline, the pipeline is connected to the hopper, the lower end of the bottom tube is provided with a notch, the side walls of the notch are symmetrically provided with discharge inclined plates, and a material distribution gear is rotatably provided in the notch.

[0009] Furthermore, in order to use gravity to determine the opening direction of the bottle cap, the axis of the dividing gear is eccentrically arranged with respect to the axis of the bottom tube, the tooth tip of the dividing gear is higher than the top of the discharge inclined plate, and the dividing gear is arranged in the gap between the discharge inclined plates.

[0010] Furthermore, a material dividing motor is connected to the center of the material dividing gear, and the material dividing motor is arranged on the side wall of the bottom tube.

[0011] Furthermore, in order to transport the separated bottle caps to the bottle mouth of the bucket, the side wall of the groove on the bottom tube is provided with an inclined rail, and the end of the inclined rail is provided with a material drop groove, the width of the material drop groove is adapted to the diameter of the bottle caps, and an arc groove is provided at one end of the inclined rail close to the bottom tube, and the radius of the arc groove is adapted to the rotation radius of the material dividing gear.

[0012] Furthermore, the pipeline at the upper end of the bottom pipe includes a first transition pipe, a tipping pipe and a second transition pipe, the first transition pipe is arranged at the lower end of the hopper, the second transition pipe is arranged at the upper end of the bottom pipe, and the tipping pipe is connected between the first transition pipe and the second transition pipe.

[0013] Furthermore, the cross-sectional size of the tipping tube is adapted to the bottle cap, the cross-sectional height of the tipping tube is adapted to the height of the bottle cap, the cross-sectional length of the tipping tube is adapted to the diameter of the bottle cap, a gathering cavity is provided at the end of the first transition tube, and an adjustment cavity is provided at the upper end of the second transition tube.

[0014] Furthermore, the reverse cover rotation mechanism includes a bracket, a plurality of reversing wheels are symmetrically provided on the inner side of the upper wall of the bracket, a plurality of transmission wheels coaxially connected to the reversing wheels are provided on the upper wall of the bracket, a reversing belt is surrounded by the reversing wheels, a transmission belt is surrounded by the transmission wheels, a reversing motor is provided on one of the transmission wheels, and under the action of the reversing motor, the rotation direction of the reversing belt is the same as the rotation direction of the internal threads of the bottle cap and the bucket.

[0015] Furthermore, the reversing wheels on both sides are arranged in an open trumpet shape, the center distance of the reversing wheel close to one end of the hopper is the largest, and the center distance of the remaining reversing wheels is the smallest and is adapted to the diameter of the bottle cap.

[0016] Furthermore, in order to better make the thread of the bottle cap fall into the bottom of the outer thread of the bucket during the process of clamping and reversing the bottle cap, a pressure groove is provided at the inner center of the upper wall of the bracket, and a pressure plate is hinged in the pressure groove. The opening directions of the pressure plate and the pressure groove are toward the hopper, and a spring is connected between the pressure plate and the pressure groove.

[0017] The beneficial effects achieved by the present invention are as follows: 1. The material distribution mechanism can determine the direction of the bottle cap only with the cooperation of the material distribution gear and the discharging inclined plate. The overall structure is light and simple. The tooth tip of the material distribution gear is eccentrically set with the bottle cap. If the bottle cap opens downward, the bottle cap can be supported by the tooth tip of the material distribution gear and the top of the discharging inclined plate to keep the bottle cap balanced. When the material distribution gear rotates, the bottle cap can be transported to the inclined rail. If the bottle cap opens upward, because the tooth tip of the material distribution gear is higher than the top of the discharging inclined plate, the end face of the bottle cap cannot be supported by a balanced force on the same horizontal plane, the bottle cap tilts, and slides out along the slope of the discharging inclined plate under the action of gravity; 2. The cross-sectional height of the tipping tube is adapted to the height of the bottle cap, so that only one bottle cap can pass through its inner cavity at a time, so that the material dividing gear and the discharging inclined plate below can perform the material dividing action to avoid crowding and conflict of multiple bottle caps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 An exploded view of the first transition duct, the lay-down duct and the second transition duct; Figure 3 is a cross-sectional view of a first transition duct, a lay-down duct, and a second transition duct; Figure 4 It is a fracture view of the structural diagram of the material distribution mechanism; Figure 5 It is a fracture view of the cross-sectional view of the material distribution mechanism; Figure 6 The status of the bottle cap and the dispensing mechanism Figure 1 ; Figure 7 The status of the bottle cap and the dispensing mechanism Figure 2 ; Figure 8 The status of the bottle cap and the dispensing mechanism Figure 3 ; Fig. 9 A bottom view of the reverse cover-turning mechanism; Fig.10 It is a cross-sectional view of the reverse cover mechanism.

[0019] Among them, 1. conveyor belt, 2. material distribution mechanism, 3. hopper, 4. reverse cover turning mechanism, 5. cover screwing robot, 6. first transition tube, 7. laying down tube, 8. second transition tube, 9. gathering chamber, 10. adjustment chamber, 11. bottom tube, 12. material distribution gear, 13. material distribution motor, 14. inclined rail, 15. material drop chute, 16. discharging inclined plate, 17. notch, 18. bracket, 19. reversing wheel, 20. reversing belt, 21. pressing groove, 22. pressing plate, 23. spring, 24. transmission wheel, 25. transmission belt, 26. reversing motor, 27. bottle cap.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] like Figure 1 As shown, a filling and capping machine proposed in an embodiment of the present invention includes a conveyor belt 1, which is used to transport water buckets to various process positions. A dividing mechanism 2 is provided above the conveyor belt 1, and a hopper 3 is provided above the dividing mechanism 2. The hopper 3 is connected to the dividing mechanism 2 through a pipeline. The hopper 3 is used to hold bottle caps. The bottle caps are conveyed into the dividing mechanism 2. The dividing mechanism 2 can determine the opening direction of the bottle caps and convey the bottle caps with the opening facing downward to the bottle mouth of the bucket. The bottle caps with the opening facing upward are discharged and fall into the recovery bucket so as to be added to the hopper 3 again.

[0024] A capping robot 5 is provided above the conveyor belt 1 at the rear end of the distributing mechanism 2. The capping robot 5 can be controlled to move downward to the height of the bottle cap and clamp the bottle cap, and then tighten the bottle cap at the bottle mouth of the bucket. The capping robot 5 can adjust the torque of the capping under the control of the servo motor.

[0025] A reverse capping mechanism 4 is provided above the conveyor belt 1 between the dispensing mechanism 2 and the capping robot 5. The rotation direction of the reverse capping mechanism 4 is opposite to the rotation direction of the capping robot 5. The rotation direction of the reverse capping mechanism 4 is opposite to the rotation direction of the bottle cap and the internal thread of the bucket. When the bottle cap falls on the bottle mouth of the bucket, the bottle cap floats on the end of the bottle mouth supported by the internal thread. At this time, the internal thread of the bottle cap and the thread at the bottle mouth of the bucket cannot engage at the starting point of the thread, which is not conducive to the direct rotation operation of the subsequent capping robot 5. The reverse capping mechanism 4 can prevent the bottle cap from rotating in the opposite direction of the thread, thereby causing the bottle cap to fall into the starting engagement position of the thread so that the subsequent capping robot 5 can directly tighten the bottle cap.

[0026] like Figure 4 and Figure 5As shown, the dispensing mechanism 2 includes a bottom tube 11, the upper end of the bottom tube 11 is connected to the pipeline, and the pipeline is connected to the hopper 3 so that the bottle caps can fall into the bottom tube 11. A notch 17 is provided at the lower end of the bottom tube 11, and a discharge inclined plate 16 is symmetrically provided on the side wall of the notch 17. A dispensing gear 12 is rotatably provided in the notch 17.

[0027] In order to use gravity to determine the opening direction of the bottle cap, the axis of the dividing gear 12 is eccentrically arranged with the axis of the bottom tube 11, the tooth tip of the dividing gear 12 is higher than the top of the discharging inclined plate 16, and the dividing gear 12 is arranged in the gap between the discharging inclined plates 16. Preferably, the height difference between the tooth tip of the dividing gear 12 and the discharging inclined plate 16 is the depth of the inner opening of the bottle cap; Figure 6 As shown in the figure, when the bottle cap falls, if the opening side of the bottle cap faces downward, the inner side wall of the sealing end of the bottle cap will be lifted up by the tooth tip of the material distribution gear 12, and the port of the opening end of the bottle cap will be lifted up by the top of the discharge inclined plate 16, and the bottle cap will remain stationary due to the balanced support force; Figure 7 As shown, if the opening side of the bottle cap faces upward, the bottle cap will only contact the tooth tip of the discharging gear 12 first. When the bottle cap is horizontal, the discharging inclined plate 16 cannot provide support for it. Because the axis of the discharging gear 12 is eccentric to the axis of the bottom tube 11, the bottle cap will tilt to one side under the action of gravity, and slide out of the notch 17 along the slope of the discharging inclined plate 16 and fall into the recovery barrel, waiting to be added to the hopper 3 again later.

[0028] The center of the material distribution gear 12 is connected to a material distribution motor 13, which is arranged on the side wall of the bottom tube 11. Figure 8 As shown, when the bottle cap opening is supported and fixed downward by the dividing gear 12 and the discharging inclined plate 16, the dividing motor 13 is started and drives the dividing gear 12 to rotate. When the dividing gear 12 rotates, the tooth tip of the dividing gear 12 in the bottle cap opening groove drives the bottle cap to move out of the groove 17.

[0029] In order to transport the separated bottle caps to the bottle mouth of the bucket, Figure 4 and Figure 5 As shown, a ramp 14 is provided on the side wall of the notch 17 on the bottom tube 11, and a feeding trough 15 is provided at the end of the ramp 14. The width of the feeding trough 15 is adapted to the diameter of the bottle cap. An arc groove is provided at one end of the ramp 14 close to the bottom tube 11, and the radius of the arc groove is adapted to the rotation radius of the dividing gear 12. When the bottle cap is driven by the dividing gear 12 to rotate to the upper end of the ramp 14, the open end of the bottle cap will contact the groove surface of the ramp 14. As the dividing gear 12 continues to rotate into the arc groove, the tooth tip of the dividing gear 12 separates from the bottle cap, and all the bottle caps move to the ramp 14. The bottle caps will slide downward under the action of gravity and fall from the feeding trough 15 to the bucket below, thereby completing the feeding action of the bottle caps.

[0030] like Figure 2 and Figure 3As shown, the pipeline at the upper end of the bottom tube 11 includes a first transition tube 6, a tipping tube 7 and a second transition tube 8. The first transition tube 6 is arranged at the lower end of the hopper 3, and the second transition tube 8 is arranged at the upper end of the bottom tube 11. The tipping tube 7 is connected between the first transition tube 6 and the second transition tube 8. The bottle caps in the hopper 3 pass downward through the first transition tube 6, the tipping tube 7 and the second transition tube 8 in sequence, and then fall into the bottom tube 11 for separation processing.

[0031] In order to make each material falling into the bottom tube 11 maintain a horizontal posture, that is, the opening faces downward or upward, rather than a vertical posture with the opening facing right or left, the cross-sectional size of the tipping tube 7 is adapted to the bottle cap, the cross-sectional height of the tipping tube 7 is adapted to the height of the bottle cap, the cross-sectional length of the tipping tube 7 is adapted to the diameter of the bottle cap, a gathering chamber 9 is provided at the end of the first transition tube 6, and an adjustment chamber 10 is provided at the upper end of the second transition tube 8. If the bottle cap is in a vertical state when it falls from the hopper 3, the bottle cap will gradually tilt when passing through the gathering chamber 9, and when it enters the tipping tube 7, it will be completely adjusted to the same angle as the tipping tube 7, so that the bottle cap is adjusted from a vertical state to a posture close to the horizontal, and only one bottle cap can pass through the tipping tube 7 at a time, which can prevent multiple bottle caps from stacking and unloading, and prevent affecting the orderly operation of the lower dividing gear 12. After the bottle cap passes through the tipping tube 7, it is gradually adjusted to a horizontal posture from the adjustment chamber 10, and finally falls into the bottom tube 11.

[0032] like Figure 1 , Fig. 9 and Fig.10 As shown, the reverse capping mechanism 4 includes a bracket 18, and a plurality of groups of reversing wheels 19 are symmetrically arranged on the inner side of the upper wall of the bracket 18. The upper wall of the bracket 18 is provided with a plurality of transmission wheels 24 coaxially connected with the reversing wheels 19. A reversing belt 20 is arranged around the reversing wheel 19, and a transmission belt 25 is arranged around the transmission wheel 24. A reversing motor 26 is arranged on one of the transmission wheels 24. Under the action of the reversing motor 26, the rotation direction of the reversing belt 20 is the same as the rotation direction of the internal threads of the bottle cap and the bucket, so that the bottle cap rotates in the opposite direction of the threads on the bucket. After the reversing motor 26 is started, all the transmission wheels 24 will be driven to rotate through the transmission belt 25, and the transmission wheel 24 will drive the reversing wheel 19 below to rotate, and the reversing wheel 19 drives the reversing belt 20 to rotate. When the bucket carrying the bottle cap passes through the reversing belt 20, the reversing belt 20 applies friction to the bottle cap, so that the bottle cap rotates relative to the bucket, and the rotation direction is opposite to the screwing direction of the bottle cap, so that the internal thread of the bottle cap is at the starting bite position of the thread at the bottle mouth of the bucket, so that the capping robot 5 can directly screw.

[0033] The reversing wheels 19 on both sides are arranged in an open trumpet shape. The center distance of the reversing wheel 19 close to one end of the hopper 3 is the largest, and the center distances of the remaining reversing wheels 19 are the smallest and are adapted to the diameter of the bottle caps. The reversing wheels 19 with gradually narrowing distances can clamp the bottle caps better and more gently to prevent the bottle caps from flying out.

[0034] In order to better make the thread of the bottle cap fall into the bottom of the outer thread of the bucket during the process of clamping and reversing the bottle cap, a pressing groove 21 is provided at the inner center of the upper wall of the bracket 18, and a pressing plate 22 is hinged in the pressing groove 21. The opening directions of the pressing plate 22 and the pressing groove 21 are toward the hopper 3. A spring 23 is connected between the pressing plate 22 and the pressing groove 21. When the bottle cap enters the reversing belt 20, the bottle cap is rotated by the reversing belt 20, and the pressing plate 22 will also press the bottle cap downward, causing the bottle cap to rotate and move downward, so that the bottle cap reaches the starting point of the thread engagement.

[0035] During specific use, start the conveyor belt 1, place the bucket on the conveyor belt 1, pour all the bottle caps into the hopper 3, and the bottle caps fall into the first transition pipe 6 one by one under the action of gravity. When the bottle caps reach the gathering chamber 9, the bottle caps in any posture will be adjusted to a nearly horizontal posture, and then continue to slide down into the tipping tube 7. Due to the size of the tipping tube 7, only one bottle cap can pass through each tipping tube 7. The bottle caps continue to slide down into the adjustment chamber 10 and gradually adjust to a horizontal posture, that is, the opening is facing downward or upward, and then fall into the bottom tube 11.

[0036] Start the dispensing motor 13. If the opening side of the bottle cap faces downward, the inner wall of the sealing end of the bottle cap will be lifted up by the tooth tip of the dispensing gear 12, and the port of the open end of the bottle cap will be lifted up by the top of the discharging inclined plate 16. The bottle cap remains balanced. When the dispensing motor 13 rotates, it will drive the dispensing gear 12 to rotate. When the dispensing gear 12 rotates, the tooth tip of the dispensing gear 12 in the opening groove of the bottle cap will drive the bottle cap to move out of the groove 17. When the bottle cap is driven by the dispensing gear 12 to rotate to the upper end of the inclined rail 14, the open end of the bottle cap contacts the groove surface of the inclined rail 14. As the dispensing gear 12 continues to rotate into the circular arc groove, the tooth tip of the dispensing gear 12 separates from the bottle cap, and all the bottle caps move to the inclined rail 14. The bottle caps will slide downward under the action of gravity and fall from the drop chute 15 onto the bucket below.

[0037] If the opening side of the bottle cap faces upward, the bottle cap will only contact the tooth tip of the material distribution gear 12 first, and the discharge inclined plate 16 cannot provide support for it. The bottle cap tilts to one side under the action of gravity and slides out of the notch 17 along the slope of the discharge inclined plate 16 and falls into the recovery bin.

[0038] The water bucket under the feeding chute 15 continues to move along the conveyor belt 1. When the water bucket reaches the position of the bracket 18, it will gradually be clamped by the open reversing wheel 19 and the reversing belt 20. The reversing motor 26 drives the transmission wheel 24 to rotate through the transmission belt 25. The transmission wheel 24 drives the reversing belt 20 on the lower reversing wheel 19 to rotate. The reversing belt 20 applies friction to the bottle cap, causing the bottle cap to rotate in the opposite direction of the thread on the water bucket.

[0039] During this process, the pressing plate 22 exerts pressure on the bottle cap under the action of the spring 23, thereby assisting the bottle cap to reach the starting point of the thread engagement. When the bucket moves to the outside of the reverse cover turning mechanism 4, the bottle cap reverses to the starting engagement position of the bucket thread.

[0040] The conveyor belt 1 continues to drive the water bucket to move to the capping robot 5, and the capping robot 5 moves downward, grabs the bottle cap, and tightens the bottle cap according to the set torque, thereby completing the packaging operation of the bottled water.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A filling and capping machine, comprising a conveyor belt (1), characterized in that: Also includes: A material distribution mechanism (2) is arranged above the conveyor belt (1), comprising a bottom tube (11), the upper end of the bottom tube (11) being connected to a hopper (3) via a pipeline, the lower end of the bottom tube (11) being provided with a notch (17), the side wall of the notch (17) being symmetrically provided with a discharge inclined plate (16), a material distribution gear (12) being rotatably arranged in the notch (17), the axis of the material distribution gear (12) being eccentrically arranged with the axis of the bottom tube (11), the tooth tip of the material distribution gear (12) being higher than the top of the discharge inclined plate (16), and the center of the material distribution gear (12) being connected to a material distribution motor (13); The capping robot (5) is arranged on the conveyor belt (1) at the rear end of the material distribution mechanism (2) and is used for rotating the bottle caps.

2. The filling and capping machine according to claim 1, characterized in that: The pipeline at the upper end of the bottom pipe (11) comprises a first transition pipe (6), a tipping pipe (7) and a second transition pipe (8), wherein the first transition pipe (6) is arranged at the lower end of the hopper (3), the second transition pipe (8) is arranged at the upper end of the bottom pipe (11), and the tipping pipe (7) is connected between the first transition pipe (6) and the second transition pipe (8).

3. The filling and capping machine according to claim 2, characterized in that: The cross-sectional dimensions of the tipping tube (7) are adapted to the bottle cap, the cross-sectional height of the tipping tube (7) is adapted to the height of the bottle cap, the cross-sectional length of the tipping tube (7) is adapted to the diameter of the bottle cap, a retracting cavity (9) is provided at the end of the first transition tube (6), and an adjustment cavity (10) is provided at the upper end of the second transition tube (8).

4. The filling and capping machine according to claim 3, characterized in that: A ramp (14) is provided on the side wall of the notch (17) on the bottom tube (11), a material drop groove (15) is provided at the end of the ramp (14), the width of the material drop groove (15) is adapted to the diameter of the bottle cap, and an arc groove is provided at one end of the ramp (14) close to the bottom tube (11), the radius of the arc groove is adapted to the rotation radius of the material dividing gear (12).

5. The filling and capping machine according to claim 1, characterized in that: The material distribution gear (12) is arranged in the gap between the discharging inclined plates (16), and the material distribution motor (13) is arranged on the side wall of the bottom tube (11).

6. The filling and capping machine according to claim 1, characterized in that: A reverse cover-turning mechanism (4) is provided above the conveyor belt (1) between the material distribution mechanism (2) and the cover-turning robot (5), the reverse cover-turning mechanism (4) comprising a bracket (18), a plurality of groups of reverse wheels (19) are symmetrically provided on the inner side of the upper wall of the bracket (18), a plurality of groups of transmission wheels (24) coaxially connected to the reverse wheels (19) are provided on the upper wall of the bracket (18), a reverse belt (20) is provided around the reverse wheels (19), a transmission belt (25) is provided around the transmission wheels (24), and a reverse motor (26) is provided on one of the transmission wheels (24).

7. The filling and capping machine according to claim 6, characterized in that: The rotation direction of the reversing belt (20) is the same as the rotation direction of the internal threads of the bottle cap and the bucket.

8. The filling and capping machine according to claim 6, characterized in that: The reversing wheels (19) on both sides are arranged in an open trumpet shape, the reversing wheel (19) close to one end of the hopper (3) has the largest center distance, and the center distances of the other reversing wheels (19) are the smallest and are adapted to the diameter of the bottle cap.

9. The filling and capping machine according to claim 6, characterized in that: A pressing groove (21) is provided at the center of the inner side of the upper wall of the bracket (18), a pressing plate (22) is hinged in the pressing groove (21), the opening direction of the pressing plate (22) and the pressing groove (21) faces the hopper (3), and a spring (23) is connected between the pressing plate (22) and the pressing groove (21).

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