A non-linkage chuck rotation device

Abstract

The present invention provides a non-linked chuck rotating device, including a hollow rotating shaft fixed on a seat bearing, characterized in that a moving shaft with an inner spring is provided in the hollow rotating shaft, an outer clamping claw is hinged on the outer end of the moving shaft, an inner clamping claw is movably connected to the moving shaft inside the outer clamping claw, the inner and outer clamping claws are respectively matched with the corresponding inner and outer through holes on the support cover, and a push cylinder with an outer spring is sleeved on the support cover. The outer clamping claw is used to fix the outer end surface of the paper disc, and the inner clamping claw is used to fix the radial direction of the paper disc core, and there is no linkage when fixing, which effectively guarantees the necessary fixing force, so that the paper disc will not deviate or fall out when rotating with the hollow rotating shaft, and ensures safe production, and has the advantages of convenient and fast loading, reliable fixing, and timely withdrawal of the disc core without any interference.

Description

Technical Field

[0001] The present invention relates to a non-linkage chuck rotating device, belonging to the technical field of the design and manufacture of clamping and rotating mechanisms. Background Art

[0002] With the progress of science and technology, the requirements of each production enterprise for related equipment are getting higher and higher, including the safety, environmental protection, noise pollution, production cost, etc. of production equipment. Therefore, each manufacturing enterprise is committed to innovating and improving its own products to achieve a more reasonable state and more diverse structural designs.

[0003] The traditional chuck rotating device is a linkage chuck setting, and the two chuck jaws for positioning and fixing act at the same time. Therefore, the acting force will be divided into two forces for movement. Whether it is the chuck jaw for positioning or for fixing, when positioning and fixing the paper disk, its acting force will decrease. As a result, when the paper disk rotates at high speed, it will shift or come off due to insufficient positioning force and fixing force, thus bringing potential safety hazards and affecting normal production. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-linkage chuck rotating device, which enables accurate positioning and reliable fixing of the paper disk, ensures the safety of production, and improves efficiency and quality.

[0005] The present invention is completed through the following technical solutions: a non-linkage chuck rotating device, including a hollow rotating shaft fixed on a pedestal bearing, characterized in that a moving shaft with an inner spring is arranged in the hollow rotating shaft, an outer chuck jaw is hinged at the outer end of the moving shaft, an inner chuck jaw is movably fitted on the moving shaft inside the outer chuck jaw, the inner and outer chuck jaws are respectively fitted with corresponding inner and outer through holes on the support cover, a push cylinder with an outer spring is sleeved on the support cover, so that the moving shaft rotates with the hollow rotating shaft, and in the process of the moving shaft moving outwards and extending, the inner and outer chuck jaws are retracted to facilitate loading the paper disk onto the support cover, and then in the process of the moving shaft moving inwards and retracting, the inner and outer chuck jaws are expanded to radially and externally fix the loaded paper disk. After the paper tape on the paper disk is used up, in the process of the moving shaft moving outwards and extending again, while the inner and outer chuck jaws are retracted, the core is pushed out through the push cylinder to prepare for loading a new paper disk.

[0006] A shaft disk is arranged at the outer end of the hollow rotating shaft, and a synchronous pulley is fixed at the inner end. The synchronous pulley is connected to a power machine through a synchronous belt, so that under the drive of the power machine, the hollow rotating shaft rotates through the synchronous belt and the synchronous pulley.

[0007] The support cover is a cylindrical cover with a cavity. The outer end of the cylindrical cover is closed, and the inner end is connected to the shaft disc of the hollow rotating shaft. A plurality of outer through holes for mating with the outer clamping jaws and a plurality of inner through holes for mating with the inner clamping jaws are arranged at intervals on the support cover. Among them: an inclined surface with a gradually decreasing aperture from the inside to the outside is provided on the outside of the outer through hole, and the inner through hole is a strip-shaped through hole, so that the inner and outer clamping jaws can extend and retract along the corresponding through holes.

[0008] The moving shaft consists of a stepped shaft on the outside and a straight rod shaft on the inside. Among them: the straight rod shaft is connected to the synchronous pulley, and the end of the straight rod shaft is connected to an external power cylinder. The stepped shaft includes a tapered shaft with a gradually increasing diameter from the inside to the outside connected to the straight rod shaft, a straight cylinder shaft connected to the large diameter of the tapered shaft, and radial protrusions arranged at intervals on the outer end of the straight cylinder shaft.

[0009] A plurality of inner clamping jaws are arranged at intervals along the circumference of the moving shaft. Each inner clamping jaw is an L-shaped block composed of a horizontal block and a vertical block. The end of the horizontal block of the inner clamping jaw is hinged to the support cover through a hinge shaft, and the end of the vertical block is in rolling fit with the outer wall of the stepped shaft of the moving shaft through a roller. A push rod with a disc spring is arranged radially at the corner of the horizontal block and the vertical block. One end of the inner clamping spring is connected to the horizontal block, and the other end is connected to the outer end of the hollow rotating shaft. When the moving shaft moves outwards, the roller at the end of the vertical block of the inner clamping jaw first rolls along the axial surface of the straight cylinder shaft to stretch the inner clamping spring. When the roller at the end of the vertical block of the inner clamping jaw enters the tapered shaft, under the action of the retraction of the inner clamping spring, the push rod at the corner of the horizontal block and the vertical block retracts radially to facilitate the loading of the paper tray. On the contrary, the push rod protrudes radially to abut against the inner wall of the paper tray core to radially fix the paper tray.

[0010] A plurality of outer clamping jaws are arranged at intervals along the circumference of the moving shaft. Each outer clamping jaw is a toggle plate. The outer clamping jaw is hinged to the radial protrusion at the outer end of the moving shaft through a hinge shaft. The outer end of the outer clamping jaw is connected to one end of the outer clamping spring, and the other end of the outer clamping spring is fixed on the moving shaft. The inner end of the outer clamping jaw is connected with a roller, and the roller is in rolling fit with the inclined surface on the support cover. When the moving shaft moves outwards, the inner end of the outer clamping jaw rolls along the inclined surface outside the through hole of the support cover and retracts into the support cover to facilitate the loading of the paper tray, and at the same time stretches the outer clamping spring. On the contrary, the inner end of the outer clamping jaw radially protrudes under the action of the retraction of the outer clamping spring to fix the paper tray from the end face.

[0011] A plurality of screws are arranged at intervals along the circumference on the shaft disc at the outer end of the hollow rotating shaft, and the loading of paper trays of different sizes is adapted by adjusting the plurality of screws.

[0012] The outer end of the push cylinder is provided with a shaft hole for mating with the support cover, and the inner end is open and sleeved on the shaft disc of the hollow rotating shaft. The outer spring is placed between the push cylinder and the shaft disc of the hollow rotating shaft, so as to push the push cylinder to move inwards when loading the paper tray, so that the paper tray is sleeved on the inner end of the support cover. After the paper tape on the paper tray is used up, the paper tray core is withdrawn by the outer spring.

[0013] The present invention has the following advantages and effects: By adopting the above solution, it is convenient to fix from the outer end face of the paper tray through the outer clamping jaws, and to fix from the radial direction of the paper tray core through the inner clamping jaws, and the fixings are not linked during the fixing process, effectively ensuring the due fixing force, so that the paper tray will not shift or come off when rotating with the hollow rotating shaft, ensuring safe production. It has the advantages of convenient and fast loading, reliable fixing, timely withdrawal of the tray core, and no interference at all. It is actually an ideal non-linked chuck rotating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural sectional view of the present invention;

[0015] Figure 2 It is a structural sectional view of the present invention when loading a paper tray;

[0016] Figure 3 It is an axonometric view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The following further describes the present invention with reference to the drawings.

[0018] The non-linked chuck rotating device provided by the present invention includes a hollow rotating shaft 4 fixed on a pedestal bearing 3. A moving shaft 1 with an inner spring 11 is arranged in the hollow rotating shaft 4. The outer end of the moving shaft 1 is hinged with an outer clamping jaw 8. An inner clamping jaw 7 is movably connected to the moving shaft 1 on the inner side of the outer clamping jaw 8. The inner and outer clamping jaws 7 and 8 are respectively matched with corresponding inner through holes and outer through holes 92 on a support cover 9. A push cylinder 6 with an outer spring 61 is sleeved on the support cover 9;

[0019] An axle disc 41 is arranged at the outer end of the hollow rotating shaft 4, and a synchronous pulley 2 is fixed at the inner end. The synchronous pulley 2 is connected to a power machine (not shown in the figure) through a synchronous belt, so that under the drive of the power machine, the hollow rotating shaft 4 rotates through the synchronous belt and the synchronous pulley 2;

[0020] The support cover 9 is set as a cylindrical cover with a cavity. The outer end of the cylindrical cover is closed, and the inner end is connected to the outside of the axle disc 41 of the hollow rotating shaft 4. Six outer through holes 92 matched with the outer clamping jaws 8 and six inner through holes 93 matched with the inner clamping jaws 7 are arranged at intervals on the support cover 9. Among them: an inclined surface 91 with a gradually decreasing aperture from the inside to the outside is arranged on the outside of the outer through hole 92, so that the outer clamping jaw 8 can extend and retract along the corresponding outer through hole 92. The inner through hole 93 is set as a strip-shaped through hole, so that the inner clamping jaw 7 can extend and retract along the corresponding inner through hole 93;

[0021] The moving shaft 1 is composed of a stepped shaft on the outside and a straight rod shaft 12 on the inside. Specifically: The straight rod shaft 12 is connected to the synchronous pulley 2, and the end of the straight rod shaft 12 is connected to an external power cylinder (not shown in the figure) so that the moving shaft 1 can move horizontally under the drive of the power cylinder. The stepped shaft includes a tapered shaft 13 connected to the straight rod shaft 12 with a diameter gradually increasing from the inside to the outside, a straight cylinder shaft 14 connected to the large diameter of the tapered shaft 13, and radial protrusions 15 spaced apart at the outer end of the straight cylinder shaft 14;

[0022] Six outer clamping jaws 8 are arranged at intervals along the circumference of the moving shaft 1. Each outer clamping jaw 8 is a seesaw. The outer clamping jaw 8 is hinged to the radial protrusion 15 at the outer end of the moving shaft 1 through a hinge shaft 81. One end of an outer clamping spring 83 is connected to the outer end of the outer clamping jaw 8, and the other end is fixed on the moving shaft 1. The inner end of the outer clamping jaw 8 is connected with a roller 82, and the roller 82 is in rolling fit with the inclined surface 91 on the support cover 9. When the moving shaft 1 moves outwards, the inner end of the outer clamping jaw 8 rolls into the support cover 9 along the inclined surface 91 on the outside of the outer through-hole 92 of the support cover 9 by the roller 82 and retracts, which is convenient for loading the paper tray B onto the support cover 9, and at the same time stretches the outer clamping spring 83; After the paper tray B is loaded, the push cylinder 6 is pushed to move inwards to compress the outer spring 61. When the thrust of the power cylinder is released and the moving shaft 1 moves inwards under the action of the inner spring 11, the inner end of the outer clamping jaw 8 radially protrudes under the action of the retraction of the outer clamping spring 83 to fix the paper tray B from the end face;

[0023] Six inner clamping jaws 7 are arranged at intervals along the circumference of the moving shaft 1. Each inner clamping jaw 7 is an L-shaped block composed of a horizontal block and a vertical block. The end of the horizontal block of the inner clamping jaw 7 is hinged to the support cover 9 through a hinge shaft 71, and the end of the vertical block is in mating connection with the outer wall of the stepped shaft of the moving shaft 1 through a roller 74. A top column 73 with a disc spring is radially arranged at the corner of the horizontal block and the vertical block. One end of an inner clamping spring 72 is connected to the horizontal block, and the other end is connected to the outer end of the hollow rotating shaft 4. When the moving shaft 1 moves outwards, the roller 74 at the end of the vertical block of the inner clamping jaw 7 first rolls along the axial surface of the straight cylinder shaft 14 to stretch the inner clamping spring 72. When the roller 74 at the end of the vertical block of the inner clamping jaw 7 enters the tapered shaft 13, under the action of the retraction of the inner clamping spring 72, the horizontal block, the vertical block and the top column 73 at the corner swing around the hinge shaft 71 and radially retract, so as to facilitate loading the paper tray B onto the support cover 9. When the thrust of the power cylinder is released and the moving shaft 1 moves inwards under the action of the inner spring 11, when the roller 74 at the end of the vertical block of the inner clamping jaw 7 transitions from the tapered shaft 13 to the straight cylinder shaft 14, the inner clamping spring 72 is stretched, and at the same time the top column 73 radially protrudes and abuts against the inner wall of the paper tray core to fix the paper tray B radially;

[0024] Six screw rods 5 are arranged at intervals along the circumference on the shaft disc 41 at the outer end of the hollow rotating shaft 4, and the six screw rods 5 are adjusted to accommodate paper trays of different sizes for loading;

[0025] The outer end of the push cylinder 6 is provided with a shaft hole for mating with the support cover 9, the inner end is open and sleeved on the shaft disc 41 of the hollow rotating shaft 4, and the outer spring 61 is placed between the push cylinder 6 and the shaft disc 41 of the hollow rotating shaft 4, so as to push the push cylinder 6 to move inwards when loading the paper tray, so that the paper tray is sleeved into the inner end of the support cover 9. After the paper tape on the paper tray is used up, while the power cylinder is used to push the moving shaft 1 to move outwards, the outer clamping jaws 8 and the inner clamping jaws 7 are retracted, and at the same time, the push cylinder 6 is driven by the outer spring 61 to move outwards to withdraw the paper tray core.

Claims

1. A non-linkage chuck rotating device, comprising a hollow rotating shaft fixed on a pedestal bearing, characterized in that A hollow rotating shaft is provided with a moving shaft with an inner spring. The outer end of the moving shaft is hinged with an outer clamping jaw. An inner clamping jaw is movably fitted on the moving shaft inside the outer clamping jaw. The inner and outer clamping jaws are respectively fitted with corresponding inner and outer through holes on the support cover. A push cylinder with an outer spring is sleeved on the support cover. A shaft disc is provided at the outer end of the hollow rotating shaft, and a synchronous pulley is fixed at the inner end. The synchronous pulley is connected to a power machine through a synchronous belt. The support cover is provided as a cylindrical cover with a cavity. The outer end of the cylindrical cover is closed, and the inner end is connected to the shaft disc of the hollow rotating shaft. A plurality of outer through holes for mating with the outer clamping jaw and a plurality of inner through holes for mating with the inner clamping jaw are spacedly arranged on the support cover. Among them: an inclined surface with a gradually decreasing aperture from inside to outside is provided on the outside of the outer through hole, and the inner through hole is provided as a strip-shaped through hole.

2. The non-linkage chuck rotating device according to claim 1, characterized in that The moving shaft is composed of a stepped shaft on the outside and a straight rod shaft on the inside. Among them: the straight rod shaft is connected to the synchronous pulley, the end of the straight rod shaft is connected to an external power cylinder, and the stepped shaft includes a tapered shaft with a gradually increasing diameter from inside to outside connected to the straight rod shaft, a straight cylinder shaft connected to the large diameter of the tapered shaft, and radial protrusions spacedly arranged at the outer end of the straight cylinder shaft.

3. The non-linkage chuck rotating device according to claim 1, characterized in that A plurality of inner clamping jaws are spacedly arranged along the circumference of the moving shaft. Each inner clamping jaw is provided as an L-shaped block composed of a horizontal block and a vertical block. The end of the horizontal block of the inner clamping jaw is hinged to the support cover through a hinge shaft, and the end of the vertical block is fitted with the outer wall of the stepped shaft of the moving shaft through a roller. A jack with a disc spring is radially arranged at the corner of the horizontal block and the vertical block. One end of the inner clamping spring is connected to the horizontal block, and the other end is connected to the outer end of the hollow rotating shaft.

4. The non-linkage chuck rotating device according to claim 1, characterized in that A plurality of outer clamping jaws are spacedly arranged along the circumference of the moving shaft. Each outer clamping jaw is provided as a toggle. The outer clamping jaw is hinged to the radial protrusion at the outer end of the moving shaft through a hinge shaft. The outer end of the outer clamping jaw is connected to one end of the outer clamping spring, and the other end of the outer clamping spring is fixed on the moving shaft. A roller is connected to the inner end of the outer clamping jaw, and the roller is in rolling cooperation with the inclined surface on the support cover.

5. The non-linkage chuck rotating device according to claim 1, characterized in that A plurality of screws are spacedly arranged along the circumference on the shaft disc at the outer end of the hollow rotating shaft.

6. The non-linkage chuck rotating device according to claim 1, characterized in that The outer end of the push cylinder is provided with a shaft hole for mating with the support cover, the inner end is open and sleeved on the shaft disc of the hollow rotating shaft, and the outer spring is placed between the push cylinder and the shaft disc of the hollow rotating shaft.

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