CN219546224U - Spring clamping sleeve - Google Patents

Abstract

The utility model provides a spring ferrule, which includes a cylindrical sleeve body. The peripheral surface of the sleeve body is provided with no less than two knife grooves arranged along the axial direction of the sleeve body. Elastomer, the section of the sipe is V-shaped, the sipe includes the first groove side, the second groove side and the groove bottom, the first groove side coincides with the axial section of the casing, and the elastic body is arranged on the second groove side , the elastic body presses the clamping knife on the side of the first groove, the clamping knife includes a cylindrical knife shaft and a knife body, the bottom surface of the groove is an arc surface, the bottom surface of the groove matches the knife shaft, and the two sides of the sleeve body The end is provided with a shaft sleeve matched with the end of the cutter shaft, the cutter body is arranged in the middle of the cutter shaft, and the side of the cutter body away from the cutter shaft is provided with a blade, and the blade is provided with a serrated tooth segment. The beneficial effect of the utility model is that due to the adoption of the above technical scheme, the paper core can be conveniently loaded and unloaded, and has the characteristics of simple structure and convenient operation, and the winding form of the material on the paper core is good.

Description

Spring ferrule

technical field

The utility model relates to the technical field of reel equipment, in particular to a spring ferrule used for rewinding and rewinding.

Background technique

Products or materials such as silk thread or film are mostly wound on a columnar or I-shaped carrier. In practical applications, in order to reduce costs, the columnar carrier mostly uses a hollow tubular paper core.

The production and use of silk thread or film products will involve winding and unwinding operations, that is, winding the product on the paper core or drawing it out from the paper core. During this step, the paper core needs to be fixed on a shaft On the top, the shaft provides the power for winding and the tension of the product when unwinding. Due to the limited carrying capacity of a single paper core, high-frequency paper core replacement may be involved in the process of winding and unwinding. Therefore, the fixing and dismounting of the paper core and the shaft need to be stable and convenient.

In the prior art, in order to facilitate the fixing and disassembly of the paper core and the shaft, the shaft is mostly in the form of an air-expanding shaft. However, the air-expanding shaft needs to be equipped with compressed air, corresponding pipelines and control systems, and the equipment is cumbersome.

Patent CN 211169349 U discloses a sleeve clamping device, which is provided with a cylindrical support body, the two ends of the support body are provided with supporting shafts in the axial direction, and the surface of the support body is provided with a plurality of grooves at equal intervals in the axial direction. The groove is provided with a movingly connected clamping knife, the upper end of the clamping knife protrudes from the outer surface of the support body, the blade of the clamping knife is parallel to the axis of the support body, the blade of the clamping knife is inclined in the same direction in the groove, and the support body is provided with a The axis runs through the support through hole of the support body, and a positioning surface is provided in the support through hole, and a supporting rotating shaft matched with it is arranged in the supporting through hole, and bearings or sleeves are arranged at both ends of the supporting rotating shaft. The two ends of the body are respectively provided with circular end caps, and the support body and the end caps are provided with threaded holes, and the end caps are fixed on both ends of the support body by screws. The utility model provides a compact structure, simple manufacture, which can automatically force Clamping and releasing, a sleeve clamping device with high holding force.

The sleeve clamping device in the patent CN 211169349 U can fix and disassemble the paper core conveniently, but when fixing the paper core, the friction between the blade of the card knife and the inner wall of the paper core is used to realize the clamping of the paper tube and the sleeve For the axial positioning of the device, due to the narrow blade and smooth blade surface of the clamping knife, its friction is limited. Therefore, after the paper core is fixed on the sleeve clamping device, it is necessary to install a plug at the end of the paper core. The head is fixed on the shaft by a nut, which affects the convenience of loading and unloading the paper core to a certain extent.

Utility model content

The purpose of this utility model is to provide a spring ferrule, which is arranged between the rotating shaft and the paper core to realize the unwinding and rewinding of the attachments on the paper core, which can effectively improve the convenience of loading and unloading between the paper core and the rotating shaft, especially After the paper core is installed on the spring ferrule, the axial limit capacity between the paper core and the spring ferrule is high, and it has the advantages of simple structure and convenient operation.

The technical scheme of the utility model is:

A spring ferrule, comprising a cylindrical sleeve body, the peripheral surface of the sleeve body is provided with no less than 2 knife grooves arranged along the axial direction of the sleeve body, and a clamping knife and an elastic body are arranged in the knife grooves, so that The section of the sipe is V-shaped, the sipe includes the side of the first groove, the side of the second groove and the bottom of the groove, the side of the first groove coincides with the axial section of the casing, and the side of the second groove is about 60° to the side of the first groove Angle, the elastic body is arranged on the side of the second groove, and the elastic body presses the clamping knife on the side of the first groove. The clamping knife includes a cylindrical knife shaft and a knife body, and the bottom surface of the groove is an arc surface. The bottom surface of the groove is matched with the cutter shaft, and the two ends of the sleeve body are provided with sleeves matched with the ends of the cutter shaft. The blade is provided with serrated tooth segments.

Specifically, three sipe grooves are provided on the peripheral surface of the casing. The elastic body is a shrapnel, and the shrapnel is connected to the side of the second groove through screws.

The two ends of the casing are stepped, and the ends of the casing are directly smaller than the diameter of the middle part of the casing. Both ends of the casing are provided with end hoops, the inner diameter of the end hoops matches the diameter of the end of the casing, the outer diameter of the end hoops matches the diameter of the middle part of the casing, the end hoops are screwed to the casing, and the inside of the end hoops A knife shaft pressing groove is provided, and the knife shaft pressing groove and the groove bottom surface of the knife groove form a shaft sleeve of the knife shaft.

In the utility model, the jamming knife can rotate in the knife groove through the knife shaft and the shaft sleeve. The range of rotation is between the side of the first groove and the side of the second groove. When it is on the side, the blades of the jammed knife protrude from the knife grooves, and the blades of the jammed knives in the three knife grooves are located on the same virtual cylinder, and the diameter of the virtual cylinder is smaller than the inner diameter of the paper core. When the knife body of the jammed knife is against the side of the second groove, the blade of the jammed knife is not in the knife groove. Due to the existence of shrapnel, the knife body cannot completely touch the side of the second groove, and the blade may protrude slightly The knife groove, but the height protruding from the knife groove is less than the height of the knife edge protruding from the knife groove when the cutter body is against the side of the first groove.

The sleeve body is driven by the rotating shaft driven by the motor, one end of the rotating shaft is coaxial with the output end of the motor and is fixedly connected, and the sleeve body is fixedly connected with the rotating shaft.

When it is necessary to load the paper core on the spring ferrule, place the paper core coaxially on the end of the sleeve body away from the motor, and push the paper core towards the direction of the sleeve body, so that the paper core contacts the blade of the card knife, and the motor drives the sleeve body Turn, the direction of rotation is from the side of the second groove to the side of the first groove, under the action of the paper core, the knife body rotates to the side of the second groove, so that the paper core can be smoothly placed on the sleeve body, and the blade will be partially embedded Inside the paper core, it can provide torque for the rotation of the paper core. The work of the spring ferrule is turned to the side of the first groove to the side of the second groove. The utility model is provided with serrated tooth segments on the blade, which increases the friction force between the spring ferrule and the paper core in the axial direction, and can effectively prevent the paper core from falling from the spring ferrule when the spring ferrule drives the paper core to rotate. It slides down, eliminating the need to install a plug between the end of the paper core and the rotating shaft, and has the characteristics of simple structure and convenient operation.

Preferably, two ends of the blade are respectively provided with segments, and the ratio of the length of each segment to the total length of the blade is 1:3.

The length of the tooth section should not be too large, too long tooth section will affect the loading and unloading of the paper core, and at the same time, it will also reduce the torque transmission performance of the spring ferrule to the paper core.

Specifically, the rotating shaft is a flat shaft, that is, a limiting plane parallel to the axis of the rotating shaft is milled out on the peripheral surface of the rotating shaft, and is used for circumferentially limiting with the spring ferrule. The rotating shaft and the spring ferrule are axially limited by the limit pin.

In another optional embodiment of the utility model,

The spring ferrule includes a rotating shaft driven by a motor, and the rotating shaft includes a first section, a second section and a third section with successively smaller diameters from the direction close to the motor to the direction away from the motor, from the first section to the second section and the second section. Between the second section and the third section, a gradual transition section is respectively provided. The peripheral surface of the transition section is composed of a conical surface and a straight surface. The radial section of the transition section is a bow-shaped section. A shaft hole matched with the gradual change sections on both sides of the second section, a lock nut is provided on the third section, and the lock nut is connected with the thread of the third section.

During the winding process of the material, it is necessary to maintain a high coaxiality between the paper core and the rotating shaft. In the prior art, the shaft hole of the spring ferrule and the rotating shaft are clearance fit, which is not conducive to maintaining the coaxiality between the sleeve body and the rotating shaft. The taper surface cooperation between the shaft holes improves the coaxiality between the sleeve body and the rotating shaft, thereby improving the coaxiality between the rotating shaft and the paper core. The straight face of the gradual change section is used for the circumferential limitation of the sleeve body and the rotating shaft.

Preferably, the sleeve body is hollow, and end plates are respectively provided at both ends of the sleeve body in the axial direction, and the two end plates are respectively provided with through holes matching the gradual change sections at both ends of the second section.

The hollow sleeve body reduces the self-weight of the spring ferrule, and the through hole on the end plate is used to match the gradual change section of the rotating shaft.

The advantages and positive effects of the utility model are: due to the adoption of the above technical scheme, the paper core can be conveniently loaded and unloaded, and the axial limit between the paper core and the rotating shaft is replaced by the tooth segment on the clamping knife, which has a simple structure. , easy to operate, the coaxiality between the paper core and the rotating shaft is high, and the winding shape of the material on the paper core is good.

Description of drawings

Fig. 1 is the structural schematic diagram of embodiment 1

Fig. 2 is the explosion schematic diagram of embodiment 1

Fig. 3 is a schematic diagram of the structure and principle of the cover body of embodiment 1

Figure 4 is a schematic diagram of the structure and principle of the stuck knife against the side of the first groove

Figure 5 is a schematic diagram of the structure and principle of the card knife near the side of the second groove

Figure 6 is a detailed view of A in Figure 4

Fig. 7 is the structural schematic diagram of embodiment 2

Fig. 8 is the schematic diagram of the rotating shaft of embodiment 2

In the picture:

1. Sleeve 2. Cutter 3. Shrapnel

4. Paper core 5. Rotary shaft 6. Lock nut

11. Slot 12. End collar 13. End plate

21. Cutter shaft 22. Cutter body 23. Thread section

51, the first paragraph 52, the second paragraph 53, the third paragraph

54. Gradient section 111, side of the first groove 112, side of the second groove

113. Groove bottom surface 121. Cutter shaft pressing groove 131. Through hole

541, tapered surface 542, straight surface

Detailed ways

Example 1

As shown in Figures 1, 2 and 3, the utility model:

A spring ferrule, comprising a cylindrical sleeve body 1, three knife grooves 11 arranged along the axial direction of the sleeve body are provided on the peripheral surface of the sleeve body 1, and a clamping knife 2 and a shrapnel 3 are arranged in the knife grooves. The section of the sipe 11 is V-shaped, the sipe includes a first groove side 111, a second groove side 112 and a groove bottom 113, the first groove side 111 coincides with the axial section of the casing 1, the second groove side 112 and the The side 111 of the first groove is at an angle of about 60°, and the shrapnel 3 is arranged on the side 112 of the second groove, and the shrapnel 3 presses the clamping knife 2 on the side 111 of the first groove, and the clamping knife 2 includes a cylindrical knife shaft 21 and cutter body 22, the groove bottom surface 113 is an arc surface, the groove bottom surface 113 is matched with the cutter shaft 21, and the two ends of the sleeve body 1 are provided with a shaft sleeve matched with the cutter shaft end, and the cutter body 22 It is arranged in the middle of the cutter shaft 21 , and the side of the cutter body away from the cutter shaft is provided with a blade, and the blade is provided with a serrated tooth section 23 .

Both ends of the sleeve 1 are stepped, and the end of the sleeve is directly smaller than the diameter of the middle of the sleeve. Both ends of the casing are provided with end hoops 12, the inner diameter of the end hoops 12 matches the diameter of the end of the casing, the outer diameter of the end hoops matches the diameter of the middle part of the casing, and the end hoops are threadedly connected with the casing. The inner side of the inner side is provided with a cutter shaft pressing groove 121, and the bottom surface of the cutter shaft pressing groove and the knife groove forms the axle sleeve of the cutter shaft.

As shown in Figures 4, 5, and 6,

In the utility model, the jamming knife 2 can rotate in the knife groove 11 through the knife shaft and the axle sleeve, and the range of its rotation is between the first groove side 111 and the second groove side 112. When on the side of the first groove, the blade of the jammed knife protrudes from the knife groove, and the blades of the jammed knife in the three knife grooves are located on the same virtual cylinder whose diameter is smaller than the inner diameter of the paper core 4 . When the cutter body 22 of the stuck knife was against the second groove side 112, the blade of the stuck knife was not in the knife groove 11. Due to the existence of the shrapnel 3, the cutter body 22 could not be completely against the second groove side 112, and the blade It is possible to protrude slightly from the sipe, but the height of the protruding sipe is less than the height of the blade protruding from the sipe when the knife body is against the side of the first groove.

The sleeve body is driven by the rotating shaft 5 driven by the motor, and one end of the rotating shaft is coaxial and fixedly connected with the output end of the motor, and the sleeve body 1 is fixedly connected with the rotating shaft 5 .

The rotating shaft is a flat shaft, that is, a limiting plane parallel to the axis of the rotating shaft is milled out on the peripheral surface of the rotating shaft, which is used for limiting the circumferential position of the spring ferrule. The rotating shaft and the spring ferrule are axially limited by the limit pin.

Preferably, two ends of the blade are respectively provided with segments 23, and the ratio of the length of each segment to the total length of the blade is 1:3.

The length of the tooth section should not be too large, too long tooth section will affect the loading and unloading of the paper core, and at the same time, it will also reduce the torque transmission performance of the spring ferrule to the paper core.

The working process of this example:

When it is necessary to load the paper core 4 on the spring ferrule, place the paper core coaxially on the end of the sleeve body away from the motor, and push the paper core towards the sleeve body so that the paper core contacts the blade of the card knife, and the motor drives the sleeve The body rotates, and the direction of rotation is from the side of the second groove to the side of the first groove. Under the action of the paper core, the cutter body rotates to the side of the second groove, so that the paper core can be smoothly placed on the sleeve body, and the blade will be partly Embedded inside the paper core, it can provide torque for the rotation of the paper core. The work of the spring ferrule is turned to the side of the first groove to the side of the second groove. The utility model is provided with serrated tooth segments on the blade, which increases the friction force between the spring ferrule and the paper core in the axial direction, and can effectively prevent the paper core from falling from the spring ferrule when the spring ferrule drives the paper core to rotate. It slides down, eliminating the need to install a plug between the end of the paper core and the rotating shaft, and has the characteristics of simple structure and convenient operation.

Example 2

A spring ferrule, comprising a cylindrical sleeve body 1, three knife grooves 11 arranged along the axial direction of the sleeve body are provided on the peripheral surface of the sleeve body 1, and a clamping knife 2 and a shrapnel 3 are arranged in the knife grooves. The section of the sipe 11 is V-shaped, the sipe includes a first groove side 111, a second groove side 112 and a groove bottom 113, the first groove side 111 coincides with the axial section of the casing 1, the second groove side 112 and the The side 111 of the first groove is at an angle of about 60°, and the shrapnel 3 is arranged on the side 112 of the second groove, and the shrapnel 3 presses the clamping knife 2 on the side 111 of the first groove, and the clamping knife 2 includes a cylindrical knife shaft 21 and cutter body 22, the groove bottom surface 113 is an arc surface, the groove bottom surface 113 is matched with the cutter shaft 21, and the two ends of the sleeve body 1 are provided with a shaft sleeve matched with the cutter shaft end, and the cutter body 22 It is arranged in the middle of the cutter shaft 21 , and the side of the cutter body away from the cutter shaft is provided with a blade, and the blade is provided with a serrated tooth segment 23 .

Both ends of the sleeve 1 are stepped, and the end of the sleeve is directly smaller than the diameter of the middle of the sleeve. Both ends of the casing are provided with end hoops 12, the inner diameter of the end hoops 12 matches the diameter of the end of the casing, the outer diameter of the end hoops matches the diameter of the middle part of the casing, and the end hoops are threadedly connected with the casing. The inner side of the inner side is provided with a cutter shaft pressing groove 121, and the bottom surface of the cutter shaft pressing groove and the knife groove forms the axle sleeve of the cutter shaft.

In the utility model, the jamming knife 2 can rotate in the knife groove 11 through the knife shaft and the axle sleeve, and the range of its rotation is between the first groove side 111 and the second groove side 112. When on the side of the first groove, the blade of the jammed knife protrudes from the knife groove, and the blades of the jammed knife in the three knife grooves are located on the same virtual cylinder whose diameter is smaller than the inner diameter of the paper core 4 . When the cutter body 22 of the stuck knife was against the second groove side 112, the blade of the stuck knife was not in the knife groove 11. Due to the existence of the shrapnel 3, the cutter body 22 could not be completely against the second groove side 112, and the blade It is possible to protrude slightly from the sipe, but the height of the protruding sipe is less than the height of the blade protruding from the sipe when the knife body is against the side of the first groove.

The sleeve body is driven by the rotating shaft 5 driven by the motor, and one end of the rotating shaft is coaxial and fixedly connected with the output end of the motor, and the sleeve body 1 is fixedly connected with the rotating shaft 5 .

Preferably, two ends of the blade are respectively provided with segments 23, and the ratio of the length of each segment to the total length of the blade is 1:3.

The length of the tooth section should not be too large, too long tooth section will affect the loading and unloading of the paper core, and at the same time, it will also reduce the torque transmission performance of the spring ferrule to the paper core.

As shown in Figure 7-8,

The spring ferrule includes a rotating shaft 5 driven by a motor, and the rotating shaft includes a first segment 51, a second segment 52 and a third segment 53 with successively smaller diameters from close to the motor to a direction away from the motor, the first segment to the second segment Between the second section and the third section, a transition section 54 is respectively provided. The peripheral surface of the transition section is composed of a tapered surface 541 and a straight surface 542. The radial section of the transition section is an excellent arc. The middle part of the sleeve body There are shaft holes matching the second section and the gradual transition sections on both sides of the second section respectively, and a lock nut 6 is provided on the third section, and the lock nut 6 is threadedly connected with the third section 53 .

During the winding process of the material, it is necessary to maintain a high coaxiality between the paper core and the rotating shaft. In the prior art, the shaft hole of the spring ferrule and the rotating shaft are clearance fit, which is not conducive to maintaining the coaxiality between the sleeve body and the rotating shaft. The taper surface cooperation between the shaft holes improves the coaxiality between the sleeve body and the rotating shaft, thereby improving the coaxiality between the rotating shaft and the paper core. The straight face of the gradual change section is used for the circumferential limitation of the sleeve body and the rotating shaft.

Preferably, the sleeve body 1 is hollow, and end plates 13 are respectively provided at both ends of the sleeve body in the axial direction, and through-holes 131 are respectively provided on the two end plates to match the gradual change sections at both ends of the second section.

The hollow sleeve body reduces the self-weight of the spring ferrule, and the through hole on the end plate is used to cooperate with the gradual change section 54 of the rotating shaft.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (6)

1. The utility model provides a spring cutting ferrule, includes cylindric cover body, be equipped with the sword groove that is equipped with sword and elastomer in the sword inslot that is not less than 2 along cover body axial settings on the global of cover body, its characterized in that: the section of the cutter groove is V-shaped, the cutter groove comprises a first groove side face, a second groove side face and a groove bottom face, the first groove side face is overlapped with the shaft section of the sleeve body, the elastic body is arranged on the second groove side face, the elastic body tightly presses the cutter on the first groove side face, the cutter comprises a cylindrical cutter shaft and a cutter body, the bottom face of the groove is an arc face, the bottom face of the groove is matched with the cutter shaft, shaft sleeves matched with the end parts of the cutter shaft are arranged at two ends of the sleeve body, the cutter body is arranged in the middle of the cutter shaft, a cutting edge is arranged on one side, away from the cutter shaft, of the cutter body, and a toothed segment is arranged on the cutting edge.

2. The spring ferrule of claim 1, wherein: tooth sections are respectively arranged at two ends of the cutting edge, and the ratio of the length of each tooth section to the total length of the cutting edge is 1:6-1:3.

3. The spring ferrule of claim 1, wherein: the spring cutting ferrule includes the pivot by motor drive, the pivot is by being close to the motor to keeping away from motor direction including the first section, second section and the third section that the diameter diminishes in proper order, is equipped with the gradual change section between first section to second section and second section to the third section respectively, the global of gradual change section comprises conical surface and straight face, the radial cross-section of gradual change section is the preferred bow, the middle part of the cover body be equipped with respectively with second section and second section both sides gradual change section matched with shaft hole, be equipped with lock nut in the third section, lock nut links to each other with the third section screw thread.

4. A spring clip according to claim 3, wherein: the sleeve body is hollow, end plates are respectively arranged at two ends of the sleeve body in the axial direction, and through holes matched with the transition sections at two ends of the second section are respectively arranged on the two end plates.

5. The spring ferrule of claim 1, wherein: the end hoops are arranged at two ends of the sleeve body and are in threaded connection with the sleeve body, cutter shaft pressing grooves are formed in the end hoops, and shaft sleeves of cutter shafts are formed in the bottom surfaces of the cutter shaft pressing grooves and the cutter grooves.

6. The spring ferrule of claim 1, wherein: the elastic body is a spring plate, and the spring plate is connected with the side face of the second groove through a screw.