Rotary cap screwing machine

Abstract

The utility model discloses a rotary cap screwing machine which comprises a bottle conveying mechanism, a bottle cap supply mechanism and a cap screwing mechanism. The cap screwing mechanism comprises a positioning rotating disc, a rotating shaft and a disc mounting frame, the bottle conveying mechanism conveys bottles into and out of the positioning rotating disc, a plurality of positioning blocks are evenly arranged on the positioning rotating disc around the circle center, arc positioning grooves are formed in the outer sides of the positioning blocks, and the positioning rotating disc can rotate under driving of a motor. The disc mounting frame is mounted at the top of the rotating shaft, a plurality of cap screwing clamping jaws are arranged at the bottom of the disc mounting frame around the circle center, each cap screwing clamping jaw comprises a lifting mechanism, a rotating mechanism and a clamping jaw mechanism, the lifting mechanisms can drive the clamping jaw mechanisms to ascend and descend, and the cap screwing clamping jaws correspond to the positioning blocks in position; when the cap screwing clamping jaws rotate along with the positioning rotary disc, the clamping jaw mechanism clamps bottle caps supplied by the bottle cap supply mechanism, the lifting mechanism is used for lowering the clamping jaw mechanism to cover bottle openings of bottles with the bottle caps, and the rotating mechanism is used for screwing the bottle caps. The device further comprises a control main body which is installed on the movable arm.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cap screwing machine, specifically refers to a rotary cap screwing machine. BACKGROUND

[0002] In the field of product packaging, cap screwing machine plays a vital role. The existing rotary cap screwing machine has exposed many deficiencies in actual application. The traditional rotary cap screwing machine's bottle conveying mechanism often has the problem of poor conveying stability. In the process of conveying bottles, it is easy to have the phenomenon of uneven arrangement of bottles, bottle jamming, etc., which leads to interruption of the whole production process and seriously affects the production efficiency. For example, in some simple conveyor belt designs, there is a lack of effective material distribution and guiding device, and it is impossible to accurately send the bottles one by one into the cap screwing station in order.

[0003] Its cap supply mechanism also has defects. On the one hand, the caps are prone to accumulate or be insufficient in the supply process. The existing hopper structure and cap conveying method lack precise control and monitoring mechanism, and the cap conveying amount cannot be adjusted in time when the bottle flow on the production line changes, and the cap supply cannot be adapted to it. On the other hand, the selection and arrangement of caps are not fine enough, and it is easy to mix in substandard caps or caps of different shapes, which affects the quality of cap screwing.

[0004] In terms of cap screwing mechanism, the cap screwing jaw of the traditional rotary cap screwing machine has poor flexibility and is difficult to adapt to caps and bottles of different shapes and sizes. The gripping force and cap screwing torque of the jaw cannot be accurately adjusted according to actual needs, often leading to over-tightening or over-loosening of the caps, and the product sealing cannot be effectively guaranteed. Moreover, the positioning accuracy in the cap screwing process is not high, and the bottles are prone to shift during cap screwing, making the cap screwing position inaccurate and increasing the product scrap rate.

[0005] In addition, the existing rotary cap screwing machine generally lacks a perfect detection and rejection system. After cap screwing is completed, it is difficult to comprehensively and efficiently detect the quality of cap screwing, and the products with unscrewed caps or no caps cannot be timely discovered and rejected, leading to a large number of unqualified products flowing into the subsequent process, wasting a lot of manpower and material resources for secondary screening, and seriously affecting the overall quality image of the products and the economic benefits of the enterprise. At the same time, the overall automation degree of the equipment is low, and the collaborative work between various mechanisms is not smooth, which requires a lot of manual intervention and adjustment, increasing the production cost and production cycle, and making it difficult to meet the urgent needs of modern large-scale, high-precision and high-efficiency production. UTILITY MODEL CONTENTS

[0006] In order to solve the problems in the above-mentioned prior art, the utility model provides a rotary cap screwing machine, which can efficiently and accurately complete the cap screwing operation.

[0007] The utility model discloses a rotary cap machine, including bottle conveying mechanism, bottle cap supply mechanism and cap screwing mechanism, the cap screwing mechanism includes positioning turntable, main shaft and disc mounting frame, bottle conveying mechanism sends the bottle into and removes the positioning turntable, the positioning turntable is around the even with several positioning blocks of circle center, the outside of positioning block is equipped with arc locating groove, the positioning turntable can rotate under motor drive, the positioning turntable circle center is equipped with main shaft, the disc mounting frame is installed at the top of main shaft, the disc mounting frame bottom is around the even with several cap screwing clamping jaw of circle center, the cap screwing clamping jaw includes elevating system, rotating mechanism and clamping jaw mechanism, elevating system can drive clamping jaw mechanism elevating, the cap screwing clamping jaw with positioning block position corresponds, when the cap screwing clamping jaw rotates with the positioning turnplate, the clamping jaw mechanism takes the bottle cap that bottle cap supply mechanism supplies, elevating system is used for lowering the clamping jaw mechanism and covers the bottle cap on the bottle mouth of bottle, rotating mechanism is used for screwing the bottle cap, still including control main body, the control main body is installed on the movable arm.

[0008] Further, the bottle conveying mechanism includes a conveying belt, a guide plate, an inlet bottle dial and an outlet bottle dial, one side of the positioning turntable is provided with the conveying belt, the conveying belt is provided with the guide plate above, the guide plate is provided with the inlet bottle dial and the outlet bottle dial on both sides, both sides of the guide plate are provided with guide arc surfaces, the two guide arc surfaces are concentric with the inlet bottle dial and the outlet bottle dial respectively; the inlet bottle dial and the outlet bottle dial rotate at the same speed under the drive of the motor, the side surfaces of the inlet bottle dial and the outlet bottle dial are uniformly provided with a plurality of limiting grooves, the limiting grooves are used for clamping the bottles, the inlet bottle dial and the outlet bottle dial are both provided with double layers; the inlet bottle dial sends the bottles on the conveying belt into the positioning turntable, and the outlet bottle dial sends the bottles on the positioning turntable back to the conveying belt.

[0009] Further, the bottle cap supply mechanism further includes a hopper, a bottle cap conveying mechanism and a bottle cap supply channel, the bottle cap conveying mechanism conveys the bottle caps stored in the hopper to the bottle cap supply channel, the bottle cap supply channel is arc-shaped, and the outer side of the bottle cap supply channel is provided with a retaining edge; a bottle cap dial is installed on the outlet bottle dial through a connecting shaft, the bottle cap dial is concentric with the bottle cap supply channel, and the side surface of the bottle cap dial is provided with a plurality of bottle cap limiting grooves; the bottom of the hopper is provided with a cap cleaning window and an agitating device, the cap cleaning window can be opened to take out the bottle caps, and the agitating device includes a second air cylinder and a push block, the push block is fixed to the end of the push rod of the second air cylinder, the push block extends into the hopper, and the second air cylinder drives the push block to move to push the bottle caps in the hopper.

[0010] Furthermore, the bottle cap conveying mechanism includes a bottle cap elevator, a material sorting chute and a bottle cap chute. The material sorting chute is provided at the top of the bottle cap elevator, and the bottom end of the bottle cap elevator extends into the hopper. The bottle cap elevator conveys the bottle caps in the hopper to the material sorting chute at the top. After passing through the material sorting chute, the bottle caps fall into the bottle cap chute, and the bottle cap chute guides the bottle caps to the bottle cap supply channel.

[0011] Furthermore, the bottle conveying mechanism also includes a material dividing screw, which is arranged at the inlet end of the conveyor belt. The material dividing screw includes a screw body, an adjustment bracket, a screw drive motor and a transmission connecting rod. The screw body is installed on the adjustment bracket. The adjustment bracket is used to adjust the front and back and height of the screw body. The screw drive motor is fixedly installed on one side of the conveyor belt. The rotating shaft of the screw drive motor is connected to the rotating shaft of the screw body through two levels of the transmission connecting rod.

[0012] Furthermore, a selective material blocking device is provided at the exit where the bottle cap chute and the bottle cap thumbwheel are docked, and the selective material blocking device includes an electromagnetic push rod and a gear rod, and the gear rod is installed on the end of the bottle cap chute through a rotating pair, and the push rod end of the electromagnetic push rod is connected to the gear rod through a connecting piece, and the two ends of the connecting piece are respectively rotatably connected to the gear rod and the push rod of the electromagnetic push rod; a bottle low-material detection sensor is provided on the side of the conveyor belt away from the material-distributing screw, and the bottle low-material detection sensor is electrically connected to the electromagnetic push rod, and when the bottle low-material detection sensor detects that the bottle is low-material, the push rod of the electromagnetic push rod extends to drive the gear rod to rotate to the bottle cap chute to block the bottle cap from passing through.

[0013] Furthermore, a bottle cap low-material detection sensor is provided on the bottle cap chute, and a first bottle cap detection sensor is provided at the bottom of the bottle cap chute. When the first bottle cap detection sensor does not detect the bottle cap but the bottle cap low-material detection sensor detects the bottle cap, it can be determined that the bottle cap chute is blocked; the bottle cap low-material detection sensor and the first bottle cap detection sensor are both electrically connected to the control body, and the control body is provided with a warning light and a display screen.

[0014] Furthermore, it also includes a bottle clamping device, which includes a pulley and a bottle clamping belt. A plurality of pulleys are provided around the positioning turntable, and the bottle clamping belt is installed on the pulley. When the positioning turntable drives the bottle to rotate, the bottle clamping belt contacts the side of the bottle, and the bottle clamping belt presses the bottle into the arc positioning groove of the positioning block.

[0015] Further, the bottle clamping device further comprises a first air cylinder and a pulley mounting plate, one side of the positioning turntable is provided with the first air cylinder, a push rod tail end of the first air cylinder is provided with the pulley mounting plate, two pulleys are mounted on the pulley mounting plate, and the two pulleys on the pulley mounting plate abut against the bottle clamping belt; the tightness of the bottle clamping belt can be adjusted by changing the extension distance of the push rod of the first air cylinder; the first air cylinder is electrically connected with the control main body, and the control main body is provided with a tightness control button.

[0016] Further, the detection mechanism is arranged at the outlet end of the conveying belt, and the detection mechanism comprises a bottle detection sensor, a cap detection support, a second cap detection sensor and a cap height detection sensor; the bottle detection sensor is arranged above the conveying belt and used for detecting the passing of the bottle; the cap detection support is arranged above the bottle detection sensor; the second cap detection sensor and the cap height detection sensor are mounted on the cap detection support; the cap detection support is height-adjustable; the rejection mechanism comprises a rejection swing rod and a rejection collection box; the rejection collection box is arranged at one side of the outlet end of the conveying belt; the rejection collection box is provided with the rejection swing rod close to one side of the conveying belt; the rejection swing rod swings above the conveying belt under the drive of a motor; the motor driving the rejection swing rod is electrically connected with the detection mechanism.

[0017] The rotary cap screwing machine has the following advantages: the bottle conveying mechanism is arranged, the bottle conveying stability is improved, the problems such as bottle jamming are reduced, the material distribution screw rod can accurately distribute materials, and the timing of the bottle entering the cap screwing mechanism is adjusted; the cap supply mechanism is arranged, the agitating device is arranged at the bottom of the hopper, the bottom-accumulated caps are pushed, and the cap accumulation is avoided to ensure normal cap conveying; the rejection mechanism is arranged, the multi-sensor combination of the detection mechanism is combined to comprehensively detect the cap screwing quality, the defective products are timely rejected, and the subsequent screening cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the rotary cap screwing machine;

[0019] Figure 2 FIG. 3 is a structural schematic view of the cap screwing mechanism of the rotary cap screwing machine;

[0020] Figure 3 FIG. 5 is a structural schematic view of the hopper of the rotary cap screwing machine;

[0021] Figure 4 FIG. 7 is a structural schematic view of the cap supply channel of the rotary cap screwing machine;

[0022] Figure 5 is a structure diagram of the rejecting mechanism of the rotary cap screwing machine;

[0023] Figure 6 is a structure diagram of the distributing screw of the rotary cap screwing machine;

[0024] Wherein, 1-bottle conveying mechanism, 11-conveying belt, 111-bottle shortage detection sensor, 12-guide plate, 121-guide arc surface, 13-bottle entering wheel, 14-bottle discharging wheel, 141-bottle cap wheel, 1411-bottle cap limiting groove, 15-distributing screw, 151-screw main body, 152-adjusting support, 153-screw driving motor, 154-transmission connecting rod, 2-bottle cap supplying mechanism, 21-hopper, 211-cap cleaning window, 212-agitating device, 22-bottle cap conveying mechanism, 221-bottle cap elevator, 222-arranging chute, 223-bottle cap chute, 2231-bottle cap shortage detection sensor, 2232-first cap detection sensor, 224-selective material blocking device, 2241-electromagnetic push rod, 2242-blocking rod, 2243-connector, 23-bottle cap supplying channel, 231-blocking edge, 3-cap screwing mechanism, 31-positioning turntable, 311-positioning block, 32-rotation shaft, 33-disc mounting rack, 34-cap screwing clamping jaw, 341-lifting mechanism, 342-rotating mechanism, 343-clamping jaw mechanism, 4-bottle clamping device, 41-pulley, 42-bottle clamping belt, 43-first air cylinder, 44-pulley mounting plate, 5-detecting mechanism, 51-bottle detection sensor, 52-cap detection support, 53-second cap detection sensor, 54-cap height detection sensor, 6-rejecting mechanism, 61-rejecting swing rod, 62-rejecting collection box, 7-control main body, 71-movable arm. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] As Figures 1-6The utility model discloses a rotary cap machine, including bottle conveying mechanism 1, bottle cap supply mechanism 2 and cap mechanism 3, the cap mechanism 3 includes positioning turntable 31, main shaft 32 and disc mounting frame 33, bottle conveying mechanism 1 is sent into and removes bottle and positioning turntable 31 on the positioning turntable 31 is evenly provided with a plurality of positioning block 311 around the center, the outside of positioning block 311 is equipped with arc locating groove, positioning turntable 31 can rotate under motor drive, the main shaft 32 is equipped at the center of positioning turntable 31, disc mounting frame 33 is installed at the top of main shaft 32, disc mounting frame 33 bottom around the center is equipped with a plurality of cap clamping jaw 34, cap clamping jaw 34 includes lifting mechanism 341, rotating mechanism 342 and clamping jaw mechanism 343, lifting mechanism 341 can drive clamping jaw mechanism 343 to lift, cap clamping jaw 34 and positioning block 311 position correspond, when cap clamping jaw 34 rotates with positioning turntable 31, clamping jaw mechanism 343 takes the bottle cap that bottle cap supply mechanism 2 supplies, lifting mechanism 341 is used to lower clamping jaw mechanism 343 and covers the bottle cap on the bottle mouth, rotating mechanism 342 is used for screwing the bottle cap, still including control main body 7, control main body 7 is installed on movable arm 71.

[0027] Further, the bottle conveying mechanism 1 includes a conveyor belt 11, a guide plate 12, a bottle feeding dial 13 and a bottle discharging dial 14, one side of the positioning turntable 31 is provided with the conveyor belt 11, the upper side of the conveyor belt 11 is provided with the guide plate 12, both sides of the guide plate 12 are provided with the bottle feeding dial 13 and the bottle discharging dial 14, both sides of the guide plate 12 are provided with guide arc surfaces 121, and the bottle feeding dial 13 and the bottle discharging dial 14 are concentric with the guide arc surfaces 121 respectively; the bottle feeding dial 13 and the bottle discharging dial 14 rotate at the same speed under the drive of a motor, and the side surfaces of the bottle feeding dial 13 and the bottle discharging dial 14 are uniformly provided with a plurality of limiting grooves, the limiting grooves are used for clamping the bottles, and the bottle feeding dial 13 and the bottle discharging dial 14 are both provided with double layers; the bottle feeding dial 13 sends the bottles on the conveyor belt 11 into the positioning turntable 31, and the bottle discharging dial 14 sends the bottles on the positioning turntable 31 back to the conveyor belt 11.

[0028] Further, the bottle cap feeding mechanism 2 further comprises a hopper 21, a bottle cap conveying mechanism 22 and a bottle cap feeding channel 23, the bottle cap conveying mechanism 22 conveys the bottle caps stored in the hopper 21 to the bottle cap feeding channel 23, the bottle cap feeding channel 23 is in the shape of a circular arc, the outer side of the bottle cap feeding channel 23 is provided with a baffle 231; a bottle cap dial 141 is installed above the bottle dial 14 through a connecting shaft, the bottle cap dial 141 is concentric with the bottle cap feeding channel 23, the side of the bottle cap dial 141 is provided with a plurality of bottle cap limiting grooves 1411; the bottom of the hopper 21 is provided with a cap cleaning window 211 and an agitating device 212, the cap cleaning window 211 can be opened for taking out the bottle caps, the agitating device 212 comprises a second cylinder and a push block, the push block is fixed to the end of the push rod of the second cylinder, the push block extends into the hopper 21, and the second cylinder drives the push block to move to push the bottle caps in the hopper 21.

[0029] Further, the bottle cap conveying mechanism 22 comprises a bottle cap elevator 221, a material sorting chute 222 and a bottle cap chute 223, the top end of the bottle cap elevator 221 is provided with the material sorting chute 222, the bottom end of the bottle cap elevator 221 extends into the hopper 21, the bottle cap elevator 221 conveys the bottle caps in the hopper 21 to the material sorting chute 222 at the top, the bottle caps fall into the bottle cap chute 223 after passing through the material sorting chute 222, and the bottle cap chute 223 guides the bottle caps to the bottle cap feeding channel 23.

[0030] Further, the bottle conveying mechanism 1 further comprises a material distributing screw 15, the material distributing screw 15 is arranged at the inlet end of the conveying belt 11, the material distributing screw 15 comprises a screw main body 151, an adjusting support 152, a screw driving motor 153 and a transmission connecting rod 154, the screw main body 151 is installed on the adjusting support 152, the adjusting support 152 is used for adjusting the front and back and height of the screw main body 151, the screw driving motor 153 is fixedly installed at one side of the conveying belt 11, and the rotating shaft of the screw driving motor 153 is connected with the rotating shaft of the screw main body 151 through two-stage transmission connecting rods 154.

[0031] Further, the bottle cap chute 223 is provided with a selective blocking device 224 at the outlet where the bottle cap chute 223 is in butt joint with the bottle cap dial 141, the selective blocking device 224 comprises an electromagnetic push rod 2241 and a blocking rod 2242, the blocking rod 2242 is installed at the end of the bottle cap chute 223 through a revolute pair, the push rod end of the electromagnetic push rod 2241 is connected with the blocking rod 2242 through a connecting piece 2243, the two ends of the connecting piece are respectively in revolute connection with the blocking rod 2242 and the push rod of the electromagnetic push rod 2241; the conveying belt 11 is provided with a bottle shortage detection sensor 111 at the side away from the material distributing screw 15, the bottle shortage detection sensor 111 is electrically connected with the electromagnetic push rod 2241, when the bottle shortage detection sensor 111 detects bottle shortage, the push rod of the electromagnetic push rod 2241 is extended to drive the blocking rod 2242 to rotate to block the bottle cap passing through the bottle cap chute 223.

[0032] Further, the bottle cap chute 223 is provided with a bottle cap shortage detection sensor 2231, the bottom of the bottle cap chute 223 is provided with a first bottle cap detection sensor 2232, when the first bottle cap detection sensor 2232 does not detect a bottle cap but the bottle cap shortage detection sensor 2231 detects a bottle cap, it can be judged that the bottle cap chute 223 is blocked; the bottle cap shortage detection sensor 2231 and the first bottle cap detection sensor 2232 are electrically connected with the control main body 7, the control main body 7 is provided with a warning light and a display screen.

[0033] Further, the bottle clamping device 4 is further provided with a pulley 41 and a bottle clamping belt 42, a plurality of pulleys 41 are arranged around the positioning turntable 31, the bottle clamping belt 42 is installed on the pulleys, when the positioning turntable 31 drives the bottle to rotate, the bottle clamping belt 42 contacts the side surface of the bottle, and the bottle clamping belt 42 presses the bottle in the arc positioning groove of the positioning block 311.

[0034] Further, the bottle clamping device 4 is further provided with a first air cylinder 43 and a pulley mounting plate 44, one side of the positioning turntable 31 is provided with the first air cylinder 43, the push rod end of the first air cylinder 43 is provided with the pulley mounting plate 44, two pulleys 41 are installed on the pulley mounting plate 44, the two pulleys 41 on the pulley mounting plate 44 abut against the bottle clamping belt 42, and the tightness of the bottle clamping belt 42 can be adjusted by changing the extension distance of the push rod of the first air cylinder 43; the first air cylinder 43 is electrically connected with the control main body 7, and the control main body 7 is provided with a tightness control button.

[0035] Further, the detection mechanism 5 is arranged at the outlet end of the conveying belt 11, and the detection mechanism 5 comprises a bottle detection sensor 51, a cap detection support 52, a second cap detection sensor 53 and a cap height detection sensor 54; the bottle detection sensor 51 is arranged above the conveying belt 11 and is used for detecting the passing of the bottle; the cap detection support 52 is arranged above the bottle detection sensor 51; the second cap detection sensor 53 and the cap height detection sensor 54 are installed on the cap detection support 52, and the cap detection support 52 is adjustable in height; the rejection mechanism 6 comprises a rejection swing rod 61 and a rejection collection box 62; the rejection collection box 62 is arranged at one side of the outlet end of the conveying belt 11, and the rejection collection box 62 is provided with the rejection swing rod 61 close to one side of the conveying belt 11; the rejection swing rod 61 swings above the conveying belt 11 under the drive of a motor; the motor driving the rejection swing rod 61 is electrically connected with the detection mechanism 5.

[0036] The rotary cap screwing machine has the following advantages: the bottle conveying mechanism is provided, the bottle conveying stability is improved through cooperation of the bottle feeding gear wheel, the bottle discharging gear wheel and the guide plate, the problems such as bottle jamming are reduced, the material distribution screw rod can accurately distribute materials, and the timing of the bottle entering the cap screwing mechanism is adjusted; the cap feeding mechanism is provided with a stirring device at the bottom of the hopper, the bottom-accumulated caps are pushed, and the cap accumulation is avoided to ensure normal cap conveying; the rejection mechanism is provided, the cap quality is comprehensively detected by the multi-sensor combination of the detection mechanism, the defective products are timely rejected, and the subsequent screening cost is reduced.

[0037] The above description of the utility model and its implementation mode is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by the above description, without departing from the creative purpose of the utility model, similar structure modes and embodiments can be designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A rotary capping machine, characterized in that: The invention comprises a bottle conveying mechanism (1), a bottle cap supplying mechanism (2) and a capping mechanism (3); the capping mechanism (3) comprises a positioning turntable (31), a main shaft (32) and a disc mounting frame (33); the bottle conveying mechanism (1) conveys bottles into and out of the positioning turntable (31); a plurality of positioning blocks (311) are evenly arranged around the center of the positioning turntable (31); arc positioning grooves are arranged on the outer sides of the positioning blocks (311); the positioning turntable (31) can be rotated by a motor; the main shaft (32) is arranged at the center of the positioning turntable (31); the disc mounting frame (33) is mounted on the top of the main shaft (32); a plurality of capping clamps (311) are arranged around the center of the disc mounting frame (33) at the bottom thereof. 4), the capping clamp (34) comprises a lifting mechanism (341), a rotating mechanism (342) and a clamping mechanism (343), the lifting mechanism (341) can drive the clamping mechanism (343) to rise and fall, and the capping clamp (34) corresponds to the position of the positioning block (311); when the capping clamp (34) rotates with the positioning turntable (31), the clamping mechanism (343) clamps the bottle cap supplied by the bottle cap supply mechanism (2), the lifting mechanism (341) is used to lower the clamping mechanism (343) to cover the bottle cap on the bottle mouth, and the rotating mechanism (342) is used to tighten the bottle cap; and also includes a control body (7), the control body (7) is installed on the movable arm (71).

2. The rotary capping machine according to claim 1, characterized in that: The bottle conveying mechanism (1) comprises a conveyor belt (11), a guide plate (12), a bottle feed thumbwheel (13) and a bottle discharge thumbwheel (14); the conveyor belt (11) is provided on one side of a positioning turntable (31); the guide plate (12) is provided above the conveyor belt (11); the bottle feed thumbwheel (13) and the bottle discharge thumbwheel (14) are provided on both sides of the guide plate (12); guide arc surfaces (121) are provided on both sides of the guide plate (12); the two guide arc surfaces (121) are respectively aligned with the bottle feed thumbwheel (13) and the bottle discharge thumbwheel (14) are concentric; the bottle-feeding dial wheel (13) and the bottle-discharging dial wheel (14) rotate at the same speed under the drive of a motor; a plurality of limiting grooves are evenly arranged on the sides of the bottle-feeding dial wheel (13) and the bottle-discharging dial wheel (14); the limiting grooves are used to clamp bottles; the bottle-feeding dial wheel (13) and the bottle-discharging dial wheel (14) are both provided with double layers; the bottle-feeding dial wheel (13) sends bottles on the conveyor belt (11) to the positioning turntable (31), and the bottle-discharging dial wheel (14) sends bottles on the positioning turntable (31) back to the conveyor belt (11).

3. The rotary capping machine according to claim 2, characterized in that: The bottle cap supply mechanism (2) further comprises a hopper (21), a bottle cap conveying mechanism (22) and a bottle cap supply channel (23); the bottle cap conveying mechanism (22) conveys the bottle caps stored in the hopper (21) to the bottle cap supply channel (23); the bottle cap supply channel (23) is arc-shaped, and a retaining edge (231) is provided on the outer side of the bottle cap supply channel (23); a bottle cap dial wheel (141) is installed above the bottle discharge dial wheel (14) via a connecting shaft, and the bottle cap dial wheel (141) is connected to the bottle cap supply channel The bottle cap wheel (141) is concentric with the bottle cap path (23), and a plurality of bottle cap limiting grooves (1411) are provided on the side of the bottle cap dial wheel (141); a bottle cap cleaning window (211) and a stirring device (212) are provided at the bottom of the hopper (21); the bottle cap cleaning window (211) can be opened to remove the bottle caps, and the stirring device (212) includes a second cylinder and a push block, the push block is fixed to the end of the push rod of the second cylinder, the push block extends into the hopper (21), and the second cylinder drives the push block to move and push the bottle caps in the hopper (21).

4. The rotary capping machine according to claim 3, characterized in that: The bottle cap conveying mechanism (22) comprises a bottle cap elevator (221), a material sorting chute (222) and a bottle cap chute (223). The top of the bottle cap elevator (221) is provided with the material sorting chute (222). The bottom end of the bottle cap elevator (221) extends into the hopper (21). The bottle cap elevator (221) conveys the bottle caps in the hopper (21) to the material sorting chute (222) at the top. After passing through the material sorting chute (222), the bottle caps fall into the bottle cap chute (223). The bottle cap chute (223) guides the bottle caps to the bottle cap supply channel (23).

5. The rotary capping machine according to claim 4, characterized in that: The bottle conveying mechanism (1) further comprises a material dividing screw (15), the material dividing screw (15) being arranged at the inlet end of the conveyor belt (11), the material dividing screw (15) comprising a screw body (151), an adjustment bracket (152), a screw driving motor (153) and a transmission connecting rod (154), the screw body (151) being mounted on the adjustment bracket (152), the adjustment bracket (152) being used to adjust the front and rear direction and height of the screw body (151), the screw driving motor (153) being fixedly mounted on one side of the conveyor belt (11), and the rotating shaft of the screw driving motor (153) being connected to the rotating shaft of the screw body (151) via two-stage transmission connecting rods (154).

6. The rotary capping machine according to claim 5, characterized in that: A selective material blocking device (224) is provided at the outlet where the bottle cap chute (223) and the bottle cap thumbwheel (141) are connected. The selective material blocking device (224) comprises an electromagnetic push rod (2241) and a shift rod (2242). The shift rod (2242) is mounted on the end of the bottle cap chute (223) via a rotating pair. The push rod end of the electromagnetic push rod (2241) is connected to the shift rod (2242) via a connecting piece (2243). The two ends of the connecting piece are respectively connected to the shift rod (2241). 42) and the push rod of the electromagnetic push rod (2241) are rotatably connected; a bottle low material detection sensor (111) is provided on the side of the conveyor belt (11) away from the distributing screw (15), and the bottle low material detection sensor (111) is electrically connected to the electromagnetic push rod (2241). When the bottle low material detection sensor (111) detects that the bottle is low in material, the push rod of the electromagnetic push rod (2241) extends to drive the gear lever (2242) to rotate to the bottle cap slide groove (223) to block the bottle cap from passing through.

7. The rotary capping machine according to claim 6, characterized in that: The bottle cap chute (223) is also provided with a bottle cap low-material detection sensor (2231), and the bottom of the bottle cap chute (223) is provided with a first bottle cap detection sensor (2232). When the first bottle cap detection sensor (2232) does not detect a bottle cap, but the bottle cap low-material detection sensor (2231) detects a bottle cap, it can be determined that the bottle cap chute (223) is blocked. The bottle cap low-material detection sensor (2231) and the first bottle cap detection sensor (2232) are both electrically connected to the control body (7), and the control body (7) is provided with a warning light and a display screen.

8. The rotary capping machine according to claim 1, characterized in that: The invention also includes a bottle clamping device (4), the bottle clamping device (4) including a pulley (41) and a bottle clamping belt (42), a plurality of pulleys (41) are arranged around the positioning turntable (31), and the bottle clamping belt (42) is installed on the pulleys. When the positioning turntable (31) drives the bottle to rotate, the bottle clamping belt (42) contacts the side of the bottle, and the bottle clamping belt (42) presses the bottle into the arc positioning groove of the positioning block (311).

9. The rotary capping machine according to claim 8, characterized in that: The bottle clamping device (4) further comprises a first air cylinder (43) and a pulley mounting plate (44); the first air cylinder (43) is provided on one side of the positioning turntable (31); the pulley mounting plate (44) is installed at the end of the push rod of the first air cylinder (43); two pulleys (41) are installed on the pulley mounting plate (44); the two pulleys (41) on the pulley mounting plate (44) are against the bottle clamping belt (42); the tightness of the bottle clamping belt (42) can be adjusted by changing the distance that the push rod of the first air cylinder (43) extends; the first air cylinder (43) is electrically connected to the control body (7); and the control body (7) is provided with a tightness control button.

10. The rotary capping machine according to claim 2, characterized in that: The invention also includes a detection mechanism (5), which is arranged at the outlet end of the conveyor belt (11). The detection mechanism (5) includes a bottle detection sensor (51), a bottle cap detection bracket (52), a second bottle cap detection sensor (53) and a bottle cap height detection sensor (54). The bottle detection sensor (51) is arranged above the conveyor belt (11) to detect the passage of bottles. The bottle cap detection bracket (52) is arranged above the bottle detection sensor (51). The second bottle cap detection sensor (53) and the bottle cap height detection sensor (54) are installed above the conveyor belt (11). The bottle cap detection bracket (52) is height-adjustable; the rejection mechanism (6) is further provided, the rejection mechanism (6) comprising a rejection swing arm (61) and a rejection collection box (62); the rejection collection box (62) is provided on one side of the outlet end of the conveyor belt (11); the rejection swing arm (61) is provided on the side of the rejection collection box (62) close to the conveyor belt (11); the rejection swing arm (61) is driven by a motor to swing to above the conveyor belt (11); the motor driving the rejection swing arm (61) is electrically connected to the detection mechanism (5).

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