阅读说明：本技术 一种旋盖头摩擦离合器、旋盖头及其旋盖机 (Cap screwing head friction clutch, cap screwing head and cap screwing machine ) 是由 潘文新 于 2021-01-25 设计创作，主要内容包括：本发明公开了一种旋盖头摩擦离合器、旋盖头及其旋盖机,其中旋盖头摩擦离合器,包括：连接套,所述连接套用于与旋盖机的驱动轴连接；转盘,转盘与连接套同轴设置,所述转盘与所述连接套固定连接；固定块,固定块与所述连接套同轴设置,固定块的圆周面上环绕设置有第一凹槽,所述固定块包括第一固定块和第二固定块；连接件,连接件的圆周面上环绕设置有第二凹槽,所述转盘通过所述连接件与所述固定块连接。本发明实施例提供的旋盖头摩擦离合器使得瓶盖拧紧后,旋盖头与驱动轴之间的转动较为平滑,可增加瓶盖拧紧的精准度,减小生产误差。(The invention discloses a friction clutch of a cap screwing head, the cap screwing head and a cap screwing machine thereof, wherein the friction clutch of the cap screwing head comprises: the connecting sleeve is used for being connected with a driving shaft of the cap screwing machine; the rotary table and the connecting sleeve are coaxially arranged, and the rotary table is fixedly connected with the connecting sleeve; the fixing block is coaxially arranged with the connecting sleeve, a first groove is formed in the circumferential surface of the fixing block in a surrounding mode, and the fixing block comprises a first fixing block and a second fixing block; the periphery of the connecting piece is provided with a second groove in an encircling manner, and the turntable is connected with the fixed block through the connecting piece. According to the friction clutch of the cap screwing head provided by the embodiment of the invention, after the bottle cap is screwed down, the cap screwing head and the driving shaft rotate smoothly, the accuracy of screwing the bottle cap can be increased, and the production error is reduced.)

1. A spinner head friction clutch comprising:

the connecting sleeve is used for being connected with a driving shaft of the cap screwing machine;

the rotary table and the connecting sleeve are coaxially arranged, and the rotary table is fixedly connected with the connecting sleeve;

the fixing block and the connecting sleeve are coaxially arranged, a first groove is formed in the circumferential surface of the fixing block in a surrounding mode, the fixing block comprises a first fixing block and a second fixing block, and the first fixing block and the second fixing block are fixedly connected and jointly limit the first groove;

the connecting piece, the connecting piece with the fixed block coaxial setting, and set up in the first recess, the connecting piece is equipped with the second recess, the second recess encircles the periphery setting of connecting piece, the internal face of second recess with the carousel butt, the outer wall of second recess with the fixed block butt.

2. The capping head friction clutch of claim 1 wherein the connecting member is an engineered plastic.

3. The capping head friction clutch of claim 2 wherein the connecting member is a PEEK material.

4. The capping head friction clutch of claim 1 wherein the first fixed block and the second fixed block are connected by screws.

5. The friction clutch of claim 4, further comprising a spring, wherein the first groove is disposed on a circumferential surface of the second fixed block, the spring is disposed between the first fixed block and the second fixed block, and the spring abuts against a top surface of the connecting member.

6. The friction clutch of the capping head as claimed in claim 1, wherein the center of the upper end surface of the connecting sleeve is provided with a transmission hole, the connecting sleeve protrudes upward to form a boss, the boss is provided with a plurality of connecting holes, and the connecting holes are communicated with the transmission hole.

7. A screw-cap head, comprising:

the capping head friction clutch of any of claims 1 to 6, wherein the anchor block is provided with a central aperture;

the upper end of the rotating shaft penetrates through the center hole and is fixedly connected with the fixing block.

8. The screw cap head according to claim 7, wherein the central hole is communicated with the upper and lower parts, the upper end of the rotating shaft is positioned above the fixed block, and the upper end of the rotating shaft is connected with the inner side wall of the connecting sleeve through a bearing.

9. The screw cap head according to claim 7, further comprising a screw cap, a cap pressing pad, a guide post and a compression spring, wherein the rotating shaft is provided with a cavity with a downward opening, the screw cap is fixed at the lower end of the rotating shaft and defines a containing chamber together with the cavity at the bottom of the rotating shaft, the compression spring is arranged in the containing chamber, a guide hole which is communicated with the containing chamber from top to bottom is formed in the center of the screw cap, the guide hole is communicated with the containing chamber, a limiting boss is arranged at the upper end of the guide post and is arranged in the containing chamber, the diameter of the limiting boss is larger than that of the guide hole, the lower end of the guide post penetrates through the guide hole and is fixedly connected with the cap pressing pad, and the upper end of the limiting boss is abutted against the compression spring.

10. A capping machine, comprising:

the capping head of any one of claims 7 to 9;

and the driving shaft is in transmission connection with the connecting sleeve.

Technical Field

The invention relates to the technical field of packaging, in particular to a friction clutch of a cap screwing head, the cap screwing head and a cap screwing machine thereof.

Background

The cap screwing machine is one of main devices of an automatic filling production line and is used for screw capping bottle openings of glass bottles or PET bottles, and cap screwing heads are key components of the cap screwing machine and directly influence the operation efficiency and the sealing quality.

Because the number of turns that the screw thread between each beverage bottle and the corresponding bottle lid was aimed at is different, and the required number of turns of screwing of every bottle lid screwing also all has slight difference, and in order to let the bottle lid of each beverage bottle screw the degree roughly the same, the beverage bottle lid all screws on the beverage bottle through the spiral cover head that has magnetic damper, when the bottle lid was screwed up to certain degree, after its moment of torsion exceeded magnetic damper's peak value, relative rotation between spiral cover head and the drive shaft, avoids spiral cover head to continue to screw up the bottle lid.

However, after the torque exceeds the peak value, the magnetic damper has obvious torque fluctuation in the peak value interval, so that the rotation of the screw cap relative to the driving shaft has obvious pause and frustration, the accuracy of the screwing degree control of the bottle cap is low, and a large error exists.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

In a first aspect, the invention provides a friction clutch for a capping head, comprising a connecting sleeve, a clutch body and a clutch cover, wherein the connecting sleeve is used for being connected with a driving shaft of a capping machine; the turntable and the connecting sleeve are coaxially arranged, and the turntable is fixedly connected with the connecting sleeve; the fixing block is coaxially arranged with the connecting sleeve, a first groove is formed in the circumferential surface of the fixing block in a surrounding mode, the fixing block comprises a first fixing block and a second fixing block, and the first fixing block and the second fixing block are fixedly connected and jointly limit the first groove; the connecting piece, connecting piece and fixed block coaxial arrangement, and set up in first recess, the connecting piece is equipped with the second recess, and the periphery setting of second recess surrounding connecting piece, the internal face and the carousel butt of second recess, the outer wall face and the fixed block butt of second recess.

The friction clutch of the screwing head provided by the embodiment of the invention at least has the following beneficial effects: the connecting sleeve is used for being connected with a driving shaft of the cap screwing machine to realize the transmission of the driving shaft to the cap screwing head, and the flange plate is fixedly connected with the connecting sleeve, keeps relatively static with the connecting sleeve and rotates along with the rotation of the driving shaft; the first fixing block and the second fixing block jointly limit a first groove, the connection with the rotary table is realized through a connecting piece, the inner wall surface of a second groove of the connecting piece is abutted against the rotary table, the outer wall surface of the second groove is abutted against the fixing block, and the connecting piece provides certain friction force for the rotary table under the clamping action of the first fixing block and the second fixing block so as to complete the transmission of the rotary table to the fixing block; when the bottle cap is screwed on the bottle cap, the torque borne by the cap screwing head is smaller than the friction force of the connecting piece to the rotating disc, the rotating disc and the fixed block are kept relatively static due to the friction force of the connecting piece, when the bottle cap is screwed on the bottle opening, the torque borne by the cap screwing head is larger than the friction force of the connecting piece to the rotating disc, the rotating disc and the fixed block rotate relatively, and the cap screwing head does not continuously screw the bottle cap any more; according to the friction clutch of the cap screwing head provided by the embodiment of the invention, through the arrangement of the connecting piece, after the bottle cap is screwed down, the rotation between the cap screwing head and the driving shaft is smooth, the accuracy of screwing the bottle cap and a bottle opening is favorably increased, and the production error is reduced.

According to some embodiments of the invention, the connector is an engineered plastic part.

The engineering plastic part has the characteristics of good rigidity, small creep, high mechanical strength, good heat resistance and the like, and for the screw cap head, the screw cap head is usually required to operate in an environment with high oxygen enrichment or high oxygen enrichment content, and compared with a magnetic sheet of a magnetic damper, the engineering plastic part cannot rust, is favorable for keeping the sanitary condition of a product, and reduces the risk of product pollution.

According to some embodiments of the invention, the connector is a PEEK material part.

The rotary-cover head has the advantages that the rotary-cover head is smooth in rotation and not easy to wear after the torque borne by the rotary-cover head exceeds the friction force provided by the connecting piece for the rotary disc, and the practical performance of the rotary-cover head friction clutch is favorably improved.

According to some embodiments of the invention, the first fixing block and the second fixing block are connected by a screw.

First fixed block passes through bolted connection with the second fixed block, and bolted connection is comparatively reliable, and is stable, and through adjusting screw's elasticity, can adjust the elasticity degree between first fixed block and the second fixed block to a certain extent conveniently, changes the extreme frictional force that the connecting piece provided the carousel promptly, is convenient for also realize the installation between fixed block, connecting piece and the carousel three, is favorable to improving this spiral cover head friction clutch's practicality.

According to some embodiments of the invention, the friction clutch of the screw cap head further comprises a spring plate, the first groove is arranged on the circumferential surface of the second fixed block, the spring plate is arranged between the first fixed block and the second fixed block, and the spring plate is abutted against the top surface of the connecting piece.

The friction clutch of the cap screwing head also comprises an elastic sheet which is arranged between the first fixed block and the second fixed block, the distance between the first fixed block and the second fixed block is adjusted through the screw, so that the first fixed block and the second fixed block press the connecting piece after overcoming the elasticity of the elastic sheet, the friction clutch of the cap screwing head can conveniently adjust the tightness degree of the fixed block pressing the connecting piece through the arrangement of the elastic sheet, thereby can adjust the frictional force of connecting piece to the carousel to a certain extent, thereby in the actual production, can adjust the frictional force that the connecting piece provided to the carousel according to the moment of torsion that produces after bottle lid and the bottleneck are screwed to a certain extent, be favorable to satisfying the user demand of different production goods, the usable tension tensioning fixed block of shell fragment and connecting piece are favorable to keeping the synchronous rotation of fixed block and connecting piece, are favorable to improving this spiral cover head friction clutch's practicality.

According to some embodiments of the invention, the center of the upper end surface of the connecting sleeve is provided with a transmission hole, the connecting sleeve protrudes upwards to form a boss, the boss is provided with a plurality of connecting holes, and the connecting holes are communicated with the transmission hole.

The connecting hole is formed in the convex block and communicated with the transmission hole, after the connecting sleeve is sleeved into the driving shaft, the connecting sleeve penetrates through the connecting hole and then is connected with the driving shaft through the limiting part, the connection stability of the connecting sleeve and the driving shaft is improved, the transmission of the driving shaft to the screwing head is achieved, and the practicability of the friction clutch of the screwing head is improved.

In a second aspect, the present invention provides a capping head comprising a capping head friction clutch as described in any one of the first aspect, the fixed block being provided with a central aperture; the upper end part of the rotating shaft penetrates through the center hole and is fixedly connected with the fixing block.

The capping head provided by the embodiment of the invention at least has the following beneficial effects: be provided with the friction clutch of the spiral cover head in the spiral cover head, accomplish the transmission from the actuating lever to the spiral cover head through the friction clutch of the spiral cover head, compare in magnetic damping formula clutch, the spiral cover head of applying this friction clutch of the spiral cover head rotates more smoothly relatively after accomplishing the spiral cover of bottle lid and bottleneck, is favorable to controlling the spiral accuracy of closing of bottle lid and bottleneck, reduces the error of production.

According to some embodiments of the invention, the central hole is communicated up and down, the upper end of the rotating shaft is positioned above the fixed block, and the upper end of the rotating shaft is connected with the inner side wall of the connecting sleeve through a bearing.

The upper end of pivot is passed through the bearing and is connected with the inside wall of adapter sleeve, and after accomplishing the closure soon of bottle lid and bottleneck for the rotation between spiral cover head and the drive shaft is comparatively level and smooth, is favorable to increasing the precision that bottle lid and bottleneck closed soon, reduces production error.

According to some embodiments of the invention, the cap screwing head further comprises a cap screwing head, a cap pressing pad, a guide post and a compression spring, the rotating shaft is provided with a cavity with a downward opening, the cap screwing head is fixed at the lower end of the rotating shaft and defines an accommodating cavity together with the cavity at the bottom of the rotating shaft, the compression spring is arranged in the accommodating cavity, the center of the cap screwing head is provided with a guide hole which is communicated up and down, the guide hole is communicated with the accommodating cavity, the upper end of the guide post is provided with a limit boss, the limit boss is arranged in the accommodating cavity, the diameter of the limit boss is larger than the aperture of the guide hole, the lower end of the guide post penetrates through the guide hole and is fixedly connected with the cap pressing pad, and the upper.

The spiral cover is used for picking up the bottle lid, is provided with pressure spring in the holding cavity, and the upper end and the pressure spring butt of spacing boss, the lower extreme of guide post are fixed and are provided with the gland pad, and at the in-process that bottle lid and bottleneck closed soon, because pressure spring's elastic force, the gland pad of guide post lower extreme applys a decurrent power to the bottle lid to accomplish gradually closing soon of bottle lid and bottleneck, be favorable to improving the practicality of this spiral cover head.

In a third aspect, the present invention provides a capping machine comprising a capping head as described in any one of the second aspects; the drive shaft, drive shaft and adapter sleeve transmission are connected.

According to the capping machine provided by the embodiment of the invention, the capping machine at least has the following beneficial effects: the cap screwing machine completes transmission of the driving shaft and screwing operation of the bottle cap and the bottle opening through the cap screwing head, and compared with a magnetic damping clutch, the cap screwing machine utilizes the cap screwing head, after the bottle cap and the bottle opening are screwed, the cap screwing machine rotates relatively smoothly, the screwing accuracy of the bottle cap and the bottle opening is controlled, and production errors are reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a friction clutch for a capping head according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of a capping head friction clutch shown in FIG. 1;

fig. 3 is a schematic perspective view of a cap screwing machine according to an embodiment of the present invention.

In the drawings: 100-connecting sleeves; 110-boss; 111-connection hole; 120-drive hole; 200-a turntable; 300-fixing block; 310-a first fixed block; 320-a second fixed block; 400-a connector; 410-loading the wafer; 420-lower slice; 500-a rotating shaft; 510-a containment chamber; 520-a bearing; 600-screwing a cover; 700-capping pad; 800-a guide post; 900-hold down spring; 1000-spring plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of the terms are not limited to a certain number, and a plurality of the terms are two or more, and the terms larger, smaller, larger, and the like are understood to include the number of the terms, and the terms larger, smaller, and the like are understood to include the number of the terms. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. Additionally, appearing throughout and/or representing three side-by-side scenarios, e.g., A and/or B represents a scenario satisfied by A, a scenario satisfied by B, or a scenario satisfied by both A and B.

In the description of the present invention, there is a phrase containing a plurality of parallel features, wherein the phrase defines the closest feature, for example: b, C disposed on A, E connected to D, B disposed on A, E connected to D, C is not limited; however, terms indicating relationships between features such as "spaced apart", "arranged in a ring", etc. do not fall within this category. The phrase preceded by the word "mean" indicates that it is a definition of all features in the phrase, and if it is B, C, D, it indicates that both B, C and D are located on a.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

An embodiment of the present invention will be described below with reference to fig. 1 to 3.

Referring to fig. 1-2, an embodiment of the present invention provides a capping head friction clutch, comprising: the connecting sleeve 100, the rotating disc 200, the fixing block 300 and the connecting piece 400.

The connecting sleeve 100 is used for connecting with a driving shaft of a cap screwing machine.

The rotary table 200 is coaxially arranged with the connecting sleeve 100, and the rotary table 200 is fixedly connected with the connecting sleeve 100.

The fixing block 300 is coaxially arranged with the connecting sleeve 100, a first groove is arranged around the circumference of the fixing block 300, the fixing block 300 comprises a first fixing block 310 and a second fixing block 320, and the first fixing block 310 and the second fixing block 320 are fixedly connected and jointly define the first groove.

The connecting piece 400 and the fixed block 300 are coaxially arranged, the connecting piece 400 is arranged in the first groove, the connecting piece 400 is provided with a second groove, the second groove is arranged around the circumferential surface of the connecting piece 400, the inner wall surface of the second groove is abutted against the rotary table 200, and the outer wall surface of the second groove is abutted against the fixed block 300.

The connecting sleeve 100 is used for connecting with a driving shaft of a cap screwing machine to complete the transmission of the driving shaft to a cap screwing head, such as: the center of the upper end surface of the connecting sleeve 100 is provided with a transmission hole 120, and the driving shaft is connected with the transmission hole 120. The rotary plate 200 is fixedly connected to the lower end of the connecting sleeve 100, for example, by a plurality of screws. When the driving shaft rotates, the driving shaft drives the connecting sleeve 100 to rotate, and the rotating disc 200 and the connecting sleeve 100 keep relatively static and rotate along with the rotation of the driving shaft.

The fixing block 300 is used for being connected with a rotating shaft 500 of the cap screwing head to realize transmission from a driving shaft to the cap screwing head, a first groove is arranged around the circumferential surface of the fixing block 300, the first groove can be an annular groove arranged on the outer side of the fixing block 300, the fixing block 300 comprises a first fixing block 310 and a second fixing block 320, the first fixing block 310 and the second fixing block 320 jointly define the first groove, and the rotating disc 200 is arranged between the first fixing block 310 and the second fixing block 320. The circumferential surface of the turntable 200 is provided with a second groove in a surrounding manner, the inner wall surface of the second groove is abutted against the turntable 200, and the outer wall surface of the second groove is abutted against the fixed block 300.

The friction clutch of the cap screwing head provided by the embodiment of the invention realizes the clutch effect through the friction force provided by the connecting piece 400 to the rotary disc 200. The connecting piece 400 clamps the rotary disc 200 to a certain extent under the action of the fixing block 300, and the friction force provided by the connecting piece 400 to the rotary disc 200 can be controlled to a certain extent through the pressing action of the first fixing block 310 and the second fixing block 320 on the connecting piece 400, and in the screwing process of the bottle cap and the bottle opening, as the torque of the bottle cap borne by the screwing head is smaller than the friction force provided by the connecting piece 400 to the rotary disc 200, the fixing block 300 and the rotary disc 200 are kept relatively static and rotate along with the rotation of the driving shaft. When the bottle cap is screwed at the bottle mouth, the torque of the bottle cap borne by the cap screwing head is larger than the friction force provided by the connecting piece 400 to the rotary disc 200, the rotary disc 200 and the fixed block 300 rotate relatively, and the bottle cap is not screwed any more.

Therefore, the friction clutch of the capping head provided by the embodiment of the invention is provided with the connecting piece 400, when the torque of the bottle cap borne by the capping head is larger than the friction force provided by the connecting piece 400 to the rotary disc 200, the rotary disc 200 and the fixed block 300 rotate smoothly, so that the practicability of the friction clutch of the capping head is improved, the accuracy of screwing the bottle cap and the bottle mouth is improved, and the production error is reduced.

In some embodiments of the present invention, the connector 400 is an engineered plastic part. The beverage packaging process has higher requirement on the environment, and the operating environment of the screw cap head is usually rich in oxygen or oxygen, so that the surface of the magnet of the magnetic damper is easy to rust, the product is possibly polluted, and the safety and sanitation of the bottle mouth are caused. The friction clutch of the capping head is beneficial to reducing the pollution of the capping head to a product or a bottle opening and increasing the practicability of the friction clutch of the capping head through the arrangement of the connecting piece 400.

In some embodiments of the present invention, the connector 400 is a PEEK material part. Polyether-ether-ketone (PEEK) is a high polymer consisting of repeating units containing one ketone bond and two ether bonds in a main chain structure, and belongs to a special high polymer material. The PEEK has high temperature resistance, the melting point is 343 ℃, the softening point is 168 ℃, and the heat generated when the screwing head friction clutch connecting piece 400 and the rotating disc 200 rotate relatively can be effectively met. PEEK has better mechanical properties, has rigidity and flexibility, and especially to fatigue resistance under the alternating stress comparatively outstanding, has better self-lubricating nature to satisfy the demand smooth rotation, PEEK has better wearability, is difficult by wearing and tearing taking place the in-process of relative rotation, is favorable to improving this spiral cover head friction clutch's durability.

It is noted that polyetheretherketone PEEK has been successfully used in the automotive industry for its good friction resistance and can replace metals, including: stainless steel and titanium, and can be used for manufacturing engine inner covers, automobile bearings, sealing parts, brake pads and the like. The PEEK has good mechanical properties, high temperature resistance, wear resistance and high pressure resistance, and is commonly used for manufacturing valve plates, piston rings, sealing elements and the like of compressors. The composite PEEK material part connector 400 also falls within the protection scope of the present invention.

In some embodiments of the present invention, the connecting member 400 may also be Polyoxymethylene (POM), which is an engineering plastic with excellent comprehensive properties, such as strength, modulus, wear resistance, toughness, fatigue resistance and creep resistance, and also has excellent electrical insulation, solvent resistance and processability, and has good self-lubricity, so as to meet the requirement of smooth rotation.

In some embodiments of the present invention, the connection member 400 includes an upper plate 410 and a lower plate 420, the second groove is disposed around the circumferential surface of the lower plate 420, the lower end surface of the upper plate 410 abuts against the upper end surface of the rotation plate 200, the upper end surface of the upper plate 410 abuts against the lower end surface of the first fixing block 310, the outer side surface of the lower plate 420 abuts against the inner side surface of the rotation plate 200, and the inner side surface of the lower plate 420 abuts against the outer side surface of the second fixing block 320.

Connecting piece 400 includes upper segment 410 and lower segment 420, be favorable to accomplishing the installation of connecting piece 400 and carousel 200, embolia second fixed block 320 with lower segment 420 after, embolia carousel 200 again, the lateral surface of lower segment 420 and the medial surface butt of carousel 200, after the medial surface of lower segment 420 and the lateral surface butt of second fixed block 320, overlap upper segment 410 on carousel 200 again, upper segment 410 and lower segment 420 have injectd the second recess jointly, the contact surface with carousel 200 contact promptly, accomplish being connected of connecting piece 400 and carousel 200, be favorable to improving this spiral cover head friction clutch's practicality.

In some embodiments of the present invention, the first fixing block 310 and the second fixing block 320 are connected by a screw. First fixed block 310 passes through bolted connection with second fixed block 320, bolted connection is comparatively reliable, and is stable, be convenient for adjust the clamp force between first fixed block 310 and the second fixed block 320, thereby adjust connecting piece 400 to the frictional force size of carousel 200, also be convenient for realize fixed block 300, installation between connecting piece 400 and the carousel 200 three, be convenient for spiral cover head friction clutch's dismouting, and the maintenance and the change in later stage, be favorable to improving this spiral cover head friction clutch's practicality. The number of the screws may be multiple, such as 3, 5, etc., which is beneficial to maintaining the connection stability of the first fixing block 310 and the second fixing block 320.

In some embodiments of the present invention, the friction clutch of the capping head further includes a resilient plate 1000, the first groove is disposed on a circumferential surface of the second fixing block 320, and the resilient plate 1000 is disposed between the first fixing block 310 and the second fixing block 320. The first fixed block 310 of screw adjustment and the distance between the second fixed block 320 are passed through to the first friction clutch of spiral cover head, make first fixed block 310 and second fixed block 320 overcome behind the shell fragment 1000 elasticity and compress tightly connecting piece 400, this spiral cover head friction clutch passes through the setting of shell fragment 1000, can adjust the elasticity degree that fixed block 300 compressed tightly connecting piece 400 conveniently, thereby can adjust the frictional force of connecting piece 400 to carousel 200 to a certain extent, thereby in the actual production, the moment of torsion that can produce after screwing according to bottle lid and bottleneck to a certain extent is adjusted the frictional force that engineering plastics provided carousel 200, be favorable to satisfying the user demand of different production goods, be favorable to improving this spiral cover head friction clutch's practicality. The friction clutch of the cap screwing head is favorable for keeping the synchronous rotation of the connecting piece 400 and the fixed block 300 by utilizing the tension of the elastic sheet 1000, and is favorable for realizing the transmission of the turntable 200 to the fixed block 300. The friction clutch with the screwing cap head is suitable for production of different products, such as threaded cap bottle openings of glass bottles or PET bottles, and can also be suitable for products with different bottle opening calibers, and the requirements of different production scenes and production products are met.

In some embodiments of the present invention, a transmission hole 120 is formed in the center of the upper end surface of the connection sleeve 100, the connection sleeve 100 protrudes upward to form a boss 110, a plurality of connection holes 111 are formed in the boss 110, and the connection holes 111 are communicated with the transmission hole 120. Be provided with connecting hole 111 on the lug, connecting hole 111 and transmission hole 120 intercommunication, after adapter sleeve 100 emboliaed the drive shaft, pass behind connecting hole 111 through stoppers such as screws and consolidate the drive shaft, be favorable to increasing the connection steadiness of adapter sleeve 100 and drive shaft, realize the drive of drive shaft to the spiral cover head, be favorable to improving this spiral cover head friction clutch's practicality.

The embodiment of the invention also provides a cap screwing head, which comprises: in the friction clutch of the screw cap head according to any one of the above embodiments, the fixing block 300 is provided with a central hole; the upper end of the rotating shaft 500 penetrates through the central hole and is fixedly connected with the fixing block 300. Be provided with the friction clutch of the spiral cover head in the spiral cover head, accomplish the transmission from the actuating lever to the spiral cover head through the friction clutch of the spiral cover head, compare in magnetic damping formula clutch, the spiral cover head of applying this friction clutch of the spiral cover head rotates more smoothly relatively after accomplishing the spiral cover of bottle lid and bottleneck, is favorable to controlling the spiral accuracy of closing of bottle lid and bottleneck, reduces the error of production.

In some embodiments of the present invention, the central holes are communicated up and down, the upper end of the rotating shaft 500 is located above the fixing block 300, and the upper end of the rotating shaft 500 is connected with the inner sidewall of the connecting sleeve 100 through the bearing 520. The upper end of the rotating shaft 500 is connected with the inner side wall of the connecting sleeve 100 through the bearing 520, after the bottle cap and the bottle mouth are screwed, the rotating shaft 500 and the fixing block 300 rotate smoothly, namely, the rotating smoothness of the screwing head and the driving shaft is increased, and compared with the screwing head which is connected with the driving shaft through a magnetic damper, the pause and contusion generated when the screwing head rotates relative to the driving shaft can be reduced, the accuracy of screwing the bottle cap and the bottle mouth is increased, and the production error is reduced.

In some embodiments of the present invention, the screw cap head further includes a screw cap 600, a gland gasket 700, a guide post 800 and a compression spring 900, the rotating shaft 500 is provided with a cavity with a downward opening, the screw cap 600 is fixed at the lower end of the rotating shaft 500 and defines a containing chamber 510 together with the cavity at the bottom of the rotating shaft 500, the compression spring 900 is disposed in the containing chamber 510, the center of the screw cap 600 is provided with a guide hole communicated up and down, the guide hole is communicated with the containing chamber 510, the upper end of the guide post 800 is formed with a limit boss, the limit boss is disposed in the containing chamber 510, the diameter of the limit boss is larger than the aperture of the guide hole, the lower end of the guide post 800 passes through the guide hole and is fixedly connected with the gland gasket 700, and the upper end of the limit boss abuts.

The spiral cover 600 is used for completing the picking of the bottle cap and the rotary closing operation of the follow-up bottle cap and the bottle mouth, a compression spring 900 is arranged in the accommodating cavity 510, the upper end of a limit boss is abutted against the compression spring 900, the lower end of the guide column 800 is fixedly provided with a pressure cover pad 700, in the rotary closing process of the bottle cap and the bottle mouth, due to the elastic force of the compression spring 900, the pressure cover pad 700 at the lower end of the guide column 800 applies a downward force to the bottle cap, the gradual rotary closing of the bottle cap and the bottle mouth is favorably completed, and the practicability of the spiral cover head is favorably improved. The diameter of the limiting bump is larger than the aperture of the guiding hole, and the limiting bump limits the guiding post 800, so that the guiding post 800 is clamped at the guiding hole on the screw cap 600, and the pre-tightening force of the pressing spring 900 on the pressing pad 700 is maintained.

Referring to fig. 3, an embodiment of the present invention further provides a cap screwing machine, including: a screw-on head as described in any one of the embodiments above; and the driving shaft is in transmission connection with the connecting sleeve 100. The cap screwing machine completes transmission of the driving shaft and screwing operation of the bottle cap and the bottle opening through the cap screwing head, and compared with a magnetic damping clutch, the cap screwing machine utilizes the cap screwing head, after the bottle cap and the bottle opening are screwed, the cap screwing machine rotates relatively smoothly, the screwing accuracy of the bottle cap and the bottle opening is controlled, and production errors are reduced.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.