Wire coil locking device for enamelling machine

Abstract

The utility model discloses a wire coil locking device for an enamelling machine, which comprises a rotation driving mechanism, a pneumatic pull rod mechanism and a clamping mechanism, and is characterized in that the rotation driving mechanism comprises a bearing seat, a main rotating shaft movably arranged in the bearing seat in a penetrating manner, and a transmission mechanism arranged on the main rotating shaft and used for driving the main rotating shaft to rotate; the pneumatic pull rod mechanism comprises an air cylinder coaxial with the main rotating shaft and a pneumatic pull rod fixedly installed at the output end of the air cylinder, and the pneumatic pull rod movably penetrates through the main rotating shaft. The clamping mechanism is arranged at the end, away from the direction of the air cylinder, of the main rotating shaft and comprises a positioning piece and a tensioning piece which are coaxial with the main rotating shaft, the tensioning piece is arranged at the end of the main rotating shaft and used for tensioning a center hole of the wire coil, and the positioning piece is fixed to the portion, between the tensioning piece and the bearing seat, of the main rotating shaft and used for being matched with the wire coil in an inserted mode so as to limit the wire coil. According to the device, the clamping mechanism is matched with the pneumatic pull rod mechanism, so that the wire coil can be automatically locked or released, the operation is simple and quick, the coil replacement difficulty is low, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for enameling machines, in particular to a wire reel locking device for enameling machines. Background Art

[0002] In the production process of enameled wire, the enameled wire is usually wound on a wire reel of an enameling machine for easy transportation, storage and use. In the prior art, before the enameled wire is wound, the wire reel is usually installed on the main shaft of the enameling machine through a center hole for winding. When the wire reel is full of enameled wire, the wire reel is removed from the main shaft manually or with the assistance of a forklift for unwinding.

[0003] At present, the upper drum of the wire drum is usually installed on the main shaft, and then the wire drum is locked to the end of the main shaft through the cooperation of the nut and the thread of the main shaft, so that the wire drum can rotate and rewind the wire under the drive of the main shaft. However, the use of nut locking to fix the wire drum is easy to cause the wire drum to get stuck after winding the enameled wire, and it has certain requirements on the operating strength and experience of the operator; the wire drum locked to the end of the main shaft by the nut has a gap between its center hole and the main shaft, resulting in the wire drum being not firmly locked, and it is easy to move and shake during the winding process. At the same time, the nut is subjected to multiple impacts on the wire drum and is easy to loosen, resulting in the safety hazard of the wire drum falling off during high-speed operation. In addition, in order to enhance the reliability of locking, the thread on the end of the main shaft is usually designed to be relatively long, and the screw-in distance of the nut is relatively large. Manual removal of the reel will result in a long reel change time and low efficiency, and the weight of the reel is heavy, which requires a lot of physical effort from employees when removing the reel, which is time-consuming and laborious. After the reel is full of wire, the reel continues to rotate due to inertia when the main shaft stops. When removing the reel manually, the reel can only be manually stopped to stop rotating and then pulled out from the shaft, which poses a great safety hazard. Removing the reel with the assistance of a forklift may damage the equipment or the reel due to the insufficient operating accuracy of the forklift in actual operation. Utility Model Content

[0004] The utility model provides a wire reel locking device for an enameling machine, which solves the technical problems in the prior art that the wire reel on the enameling machine is not firmly locked and the reel is difficult to change.

[0005] According to one aspect of the utility model, a wire reel locking device for an enameling machine is provided, comprising a rotary drive mechanism, a pneumatic pull rod mechanism and a clamping mechanism, the rotary drive mechanism comprising a bearing seat, a main rotating shaft movably inserted in the bearing seat and a transmission mechanism installed on the main rotating shaft for driving the main rotating shaft to rotate; the pneumatic pull rod mechanism comprises a cylinder coaxially arranged with the main rotating shaft and a pneumatic pull rod fixedly installed at the output end of the cylinder, the pneumatic pull rod movably inserted in the main rotating shaft; the clamping mechanism is arranged at one end of the main rotating shaft away from the cylinder, comprising a positioning member and a tensioning member coaxially arranged with the main rotating shaft, the tensioning member being arranged at the end of the main rotating shaft for tightening the center hole of the wire reel, the positioning member being fixed on the main rotating shaft between the tensioning member and the bearing seat, and being used for plugging and cooperating with the wire reel to limit the position of the wire reel.

[0006] Furthermore, the transmission mechanism includes a rotary drive motor, a first transmission wheel fixed to the output end of the rotary drive motor, and a second transmission wheel transmission-connected to the first transmission wheel, and the second transmission wheel is coaxially arranged and fixedly connected to the main shaft.

[0007] Furthermore, the main shaft includes a driving shaft fixed on the transmission mechanism and a mounting shaft arranged at one end of the driving shaft away from the transmission mechanism. The driving shaft and the mounting shaft are fixedly connected by a positioning member, and the tensioning member is installed at one end of the mounting shaft away from the positioning member.

[0008] Furthermore, the positioning member includes a first positioning plate fixed on the driving shaft and a second positioning plate fixed on the mounting shaft. The first positioning plate and the second positioning plate are fixedly connected. A clamping rod is provided at the end of the second positioning plate away from the bearing seat, which is used to plug and cooperate with the wire drum to limit the circumferential rotation of the wire drum.

[0009] Furthermore, the tensioning member includes an outer expansion sleeve fixed to the end of the pneumatic pull rod and an inner expansion sleeve movably mounted on the pneumatic pull rod. The inner expansion sleeve is fixed to the inner wall of the main rotating shaft and protrudes from the end of the main rotating shaft. One end of the inner expansion sleeve is fixed to the inner wall of the main rotating shaft, and the other end protrudes from the end of the main rotating shaft. It is used to extend into the center hole of the wire drum and be plugged into and cooperate with the outer expansion sleeve to tighten the center hole of the wire drum.

[0010] Furthermore, a locking piece is provided at one end of the outer expansion sleeve away from the inner expansion sleeve, and the locking piece is threadedly connected to the end of the pneumatic pull rod for locking the outer expansion sleeve.

[0011] Furthermore, the pneumatic pull rod includes a first pneumatic pull rod fixed to the output end of the cylinder and a second pneumatic pull rod fixed to one end of the first pneumatic pull rod away from the cylinder. The second pneumatic pull rod and the first pneumatic pull rod are coaxially arranged and fixed by threads.

[0012] Furthermore, a sliding sleeve is fixedly installed on one side of the output end of the cylinder. The sliding sleeve is sleeved on the first pneumatic pull rod and movably cooperates with the first pneumatic pull rod to guide and protect the extension and retraction of the first pneumatic pull rod.

[0013] Furthermore, a pneumatic rotary joint is installed at one end of the cylinder away from the pneumatic pull rod, which is used to provide power to the output end of the cylinder.

[0014] Furthermore, the wire drum locking device for the enameling machine also includes a base for support, and the bearing seat, cylinder and rotary drive motor are fixedly installed on the base.

[0015] The utility model has the following beneficial effects:

[0016] The utility model relates to a wire drum locking device for an enameling machine, wherein a clamping mechanism is arranged at the end of the main rotating shaft so that the clamping mechanism performs axial positioning and circumferential limiting on the wire drum through a positioning piece fixed on the main rotating shaft, so that the wire drum is positioned at the end of the main rotating shaft and radial rotation is prevented from occurring between the wire drum and the main rotating shaft through plug-in cooperation with the wire drum; a tensioning member is arranged at the end of the main rotating shaft, and the wire drum is sleeved on the main rotating shaft between the positioning member and the tensioning member, and the tensioning member can move toward the direction of the positioning member through cooperation with a pneumatic pull rod mechanism so that the wire drum abuts against the positioning member, and can extend into the center hole of the wire drum for tensioning, so that the wire drum is locked in the axial and radial directions through the limiting of the positioning member and the tensioning of the tensioning member, so that the axial movement and radial shaking of the wire drum can be effectively prevented, and the locking of the wire drum is firm and reliable, which can be It effectively prevents the high-speed rotating wire drum from accidentally falling off the main shaft, greatly improving the safety of wire winding; by setting a transmission mechanism on the main shaft to drive its rotation, the main shaft can be protected from vibration or impact, and shaking can be prevented at high speed, effectively improving the stability of rotation, so that the wire drum clamped on the main shaft can rotate stably and uniformly with the main shaft to wind up the wire, so that the wire arrangement of the wire drum is uniform and tight, effectively improving the wire arrangement quality of the enameling machine on the wire drum; at the same time, the tensioner can tighten or loosen the center hole of the wire drum through the telescopic cooperation with the pneumatic pull rod. Compared with the manual operation or forklift operation in the prior art, the wire drum can be quickly replaced, saving time and labor, with a high degree of automation, greatly improving the speed and work efficiency of reel change, and will not cause damage to the wire drum. The device is safe and reliable for locking the wire drum, and is easy to disassemble, which can realize automatic reel change, greatly improving work efficiency and safety.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a top view of the wire reel locking device for an enameling machine according to a preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the clamping mechanism of the preferred embodiment of the utility model.

[0021] Legend:

[0022] 100, wire drum; 200, rotary drive mechanism; 201, bearing seat; 202, main shaft; 2021, drive shaft; 2022, mounting shaft; 203, transmission mechanism; 2031, rotary drive motor; 2032, first transmission wheel; 2033, second transmission wheel; 300, pneumatic pull rod mechanism; 301, cylinder; 302, pneumatic pull rod; 3021, first pneumatic pull rod; 3022, second pneumatic pull rod; 303, sliding sleeve; 304, pneumatic rotary joint; 400, clamping mechanism; 401, positioning member; 4011, first positioning plate; 4012, second positioning plate; 4013, clamping rod; 402, tensioning member; 4021, outer expansion sleeve; 4022, inner expansion sleeve; 4023, locking member; 500, base. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0024] like Figure 1 and Figure 2As shown, the locking device of the wire drum 100 for the enameling machine of this embodiment includes a rotary drive mechanism 200, a pneumatic pull rod mechanism 300 and a clamping mechanism 400. The rotary drive mechanism 200 includes a bearing seat 201, a main shaft 202 movably inserted in the bearing seat 201, and a transmission mechanism 203 installed on the main shaft 202. The transmission mechanism 203 is fixed on the main shaft 202, and controls the main shaft 202 to rotate in the bearing seat 201 by transmitting force. Two bearing seats 201 are provided along the axial direction of the main shaft 202 to improve the stability of the support for the main shaft 202, so that the rotation of the main shaft 202 remains stable and radial shaking is avoided. Optionally, the bearing seat 201 can also be set to multiple. The main rotating shaft 202 is provided with a transmission mechanism 203 to drive its rotation, so that the main rotating shaft 202 can be protected from vibration or impact, and shaking can be prevented at high speed, thereby effectively improving the stability of rotation, so that the wire drum 100 clamped on the main rotating shaft 202 can rotate stably and uniformly with the main rotating shaft 202 to reel in, so that the wire arrangement of the wire drum 100 is uniform and tight, and the wire arrangement quality of the enameling machine on the wire drum 100 is effectively improved. The pneumatic pull rod mechanism 300 includes a cylinder 301 coaxially arranged with the main rotating shaft 202 and a pneumatic pull rod 302, the pneumatic pull rod 302 is fixedly installed at the output end of the cylinder 301, the main rotating shaft 202 is a hollow shaft, and the pneumatic pull rod 302 is movably arranged in the main rotating shaft 202, so that the pneumatic pull rod 302 can be extended and retracted in the main rotating shaft 202 by the drive of the cylinder 301.The clamping mechanism 400 is arranged at one end of the main shaft 202 away from the cylinder 301, and is used to clamp the wire drum 100 to the end of the main shaft 202. The clamping mechanism 400 includes a positioning member 401 and a tensioning member 402 coaxially arranged with the main shaft 202. The tensioning member 402 is arranged at the end of the main shaft 202 and is used to cooperate with the pneumatic pull rod mechanism 300. The tensioning member 402 is an elastic member, and its maximum outer diameter in the natural state is adapted to the inner diameter of the center hole of the wire drum 100, so that The wire drum 100 can be smoothly inserted into the center hole of the wire drum 100 and sleeved on the main rotating shaft 202 for winding. The maximum outer diameter of the wire drum 100 in the tensioned state is greater than the inner diameter of the center hole of the wire drum 100, so that the center hole of the wire drum 100 can be locked by the tensioning force, so that the tensioning member 402 can be extended into the center hole of the wire drum 100 and tightened to realize the winding of the wire drum 100 by controlling the contraction of the pneumatic pull rod 302, and the tensioning member 402 can lose the tension on the wire drum by controlling the extension of the pneumatic pull rod 302. The tensioning force of the center hole of the drum 100 is used to realize the lower drum of the drum 100; the positioning member 401 is fixed on the main rotating shaft 202 between the tensioning member 402 and the bearing seat 201, and is used to limit the axial position of the drum 100 and to be plugged with the drum 100 to limit the radial position of the drum 100, so as to position the drum 100 at the end of the main rotating shaft 202 and prevent the drum 100 and the main rotating shaft 202 from rotating relative to each other. The tensioning member 402 can be turned toward the end of the main rotating shaft 202 by cooperating with the pneumatic pull rod mechanism 300. The directional movement of the positioning member 401 makes the wire drum 100 abut against the positioning member 401, and can be extended into the center hole of the wire drum 100 for tightening, so that the wire drum 100 is locked in both axial and radial directions through the limiting of the positioning member 401 and the tightening of the tightening member 402, which can effectively prevent the axial movement and radial shaking of the wire drum 100. The locking of the wire drum 100 is firm and reliable, which can effectively prevent the high-speed rotating wire drum 100 from accidentally falling off the main shaft 202, greatly improving the safety of winding. Compared with the manual operation or forklift operation in the prior art, the wire drum 100 can be quickly replaced, saving time and labor, with a high degree of automation, greatly improving the speed and work efficiency of reel replacement, and will not cause damage to the wire drum 100.

[0025] When in use, start the cylinder 301 to drive the pneumatic pull rod 302 to extend axially along the main rotating shaft 202, so that the tensioner 402 is in a natural state, and then the wire drum 100 is sleeved on the main rotating shaft 202 between the positioning member 401 and the tensioner 402, so that it is plugged into and matched with the positioning member 401 for axial and radial limiting, and then control the pneumatic pull rod 302 to shrink toward the wire drum 100, so that the tensioner 402 extends into the center hole of the wire drum 100, and the wire drum 100 is in a tensioned state inside the wire drum 100 under the pull of the pneumatic pull rod 302, and at the same time, the wire drum 100 abuts against the positioning member 401 under the action of the tensioning force to lock the wire drum 100, thereby completing the upper coil of the wire drum 100. When the reel needs to be replaced, the pneumatic pull rod 302 is controlled to extend in a direction away from the wire reel 100, so that the tensioning member 402 returns to a natural state and contacts the locking of the wire reel 100, and then the wire reel 100 is removed for replacement.

[0026] like Figure 1 As shown, the transmission mechanism 203 includes a rotary drive motor 2031, a first transmission wheel 2032 fixed to the output shaft of the rotary drive motor 2031, and a second transmission wheel 2033 connected to the first transmission wheel 2032, the second transmission wheel 2033 is sleeved outside the main shaft 202 and fixedly connected to the main shaft 202, so that the rotary drive motor 2031 drives the first transmission wheel 2032 to rotate, so as to transmit the transmission force to the second transmission wheel 2033, thereby driving the main shaft 202 to rotate synchronously. Specifically, the rotary drive motor 2031 is arranged on one side of the main shaft 202 and its output shaft is parallel to the main shaft 202, the first transmission wheel 2032 is coaxially arranged and fixedly connected with the output shaft of the rotary drive motor 2031, and the first transmission wheel 2032 and the second transmission wheel 2033 are connected to each other by a conveyor belt. Optionally, the first transmission wheel 2032 and the second transmission wheel 2033 can be gear shafts, and the two can rotate synchronously by meshing with a chain. A transmission mechanism 203 is provided on the main shaft 202 to rotate through transmission, thereby preventing the main shaft 202 from being directly affected by the vibration or impact of the rotating drive motor 2031, preventing shaking at high speed, and effectively improving the stability of rotation, so that the wire drum 100 clamped on the main shaft 202 can rotate stably and uniformly with the main shaft 202 to wind up the wire, so that the wire arrangement of the wire drum 100 is uniform and tight, effectively improving the wire arrangement quality of the enameling machine on the wire drum 100.

[0027] like Figure 1As shown, the main rotating shaft 202 includes a coaxially arranged driving shaft 2021 and an installation shaft 2022. The driving shaft 2021 is movably inserted into two bearing seats 201. One end of the driving shaft 2021 is fixedly connected to the second transmission wheel 2033 of the transmission mechanism 203, and the other end is detachably fixedly connected to the installation shaft 2022 through a positioning member 401. The tensioning member 402 is arranged at one end of the installation shaft 2022 away from the positioning member 401, so that the positioning member 401 and the tensioning member 402 cooperate to lock the wire drum 100 on the installation shaft 2022 for winding. The outer diameter of the mounting shaft 2022 matches the inner diameter of the center hole of the wire drum 100, so that the wire drum 100 can be smoothly mounted on the mounting shaft 2022. The length of the mounting shaft 2022 is less than or equal to the length of the center hole of the wire drum 100, so that the tensioning member 402 arranged at the end of the mounting shaft 2022 can extend into the center hole of the wire drum 100, and abut against the inner wall of the center hole of the wire drum 100 through the tensioning force to tighten it. Optionally, the mounting shaft 2022 is provided with multiple specifications so that it can be replaced according to wire drums 100 of different sizes, thereby improving the flexibility and practicality of the device and expanding the scope of application.

[0028] like Figure 1 and Figure 2 As shown, the positioning member 401 is arranged between the driving shaft 2021 and the installation shaft 2022, and includes a first positioning plate 4011 and a second positioning plate 4012. The first positioning plate 4011 is sleeved on the outside of the driving shaft 2021 and fixedly connected to the driving shaft 2021, and the second positioning plate 4012 is sleeved on the outside of the installation shaft 2022 and fixedly connected to the installation shaft 2022; optionally, the first positioning plate 4011 is welded and fixed to the driving shaft 2021, and the second positioning plate 4012 is welded and fixed to the installation shaft 2022. Preferably, the first positioning plate 4011 and the second positioning plate 4012 have the same size and shape, both of which are disc-shaped. The first positioning plate 4011 and the second positioning plate 4012 are arranged opposite to each other and are detachably fixedly connected by bolts, so that the driving shaft 2021 and the installation shaft 2022 are fixed by the positioning member 401. When it is necessary to replace the installation shaft 2022 of different sizes to adapt to the wire drum 100, the connection between the first positioning plate 4011 and the second positioning plate 4012 can be released to remove the installation shaft 2022 for replacement, which is simple to operate and highly flexible. The second positioning plate 4012 is provided with a clamping rod 4013 at one end away from the first positioning plate 4011, and the wire drum 100 is correspondingly provided with a plug hole, so that the second positioning plate 4012 can insert the clamping rod 4013 into the plug hole to radially limit the wire drum 100, ensure that the wire drum 100 rotates synchronously with the installation shaft 2022 to reel in, and prevent the wire drum 100 from radially shaking and affecting the efficiency and quality of reeling.

[0029] like Figure 1 and Figure 2As shown, the tensioning member 402 is arranged at one end of the mounting shaft 2022 away from the positioning member 401, and includes an inner expansion sleeve 4022 and an outer expansion sleeve 4021. The inner expansion sleeve 4022 is fixed to the inner wall of the mounting shaft 2022 and protrudes from the outer portion of the mounting shaft 2022, so that the inner expansion sleeve 4022 can contact the center hole of the wire drum 100, and the outer expansion sleeve 4021 is fixed to the end of the pneumatic pull rod 302, so that it can be telescopically moved with the pneumatic pull rod 302. 4022 is arranged between the outer expansion sleeve 4021 and the second positioning plate 4012, and the pneumatic pull rod 302 is movably arranged in the inner expansion sleeve 4022. The inner expansion sleeve 4022 and the outer expansion sleeve 4021 are adapted in shape and size, and are used for plugging and matching to tighten the central hole of the wire drum 100, so that the outer expansion sleeve 4021 can be plugged with the outer expansion sleeve 4021 as the pneumatic pull rod 302 contracts, and separated from the outer expansion sleeve 4021 as the pneumatic pull rod 302 extends. Specifically, the outer expansion sleeve 4021 is a conical head, and the large end of the conical head is arranged in a direction away from the inner expansion sleeve 4022. A conical opening is opened in the inner expansion sleeve 4022 in the direction of the conical head for the conical head to be inserted.

[0030] The maximum outer diameters of the inner expansion sleeve 4022 and the outer expansion sleeve 4021 are matched with the inner diameter of the center hole of the wire drum 100, so that when the wire drum 100 is put on the coil, the wire drum 100 can be smoothly passed through the outer expansion sleeve 4021 and the inner expansion sleeve 4022 and sleeved on the mounting shaft 2022 without disassembly, and the operation of putting on the coil is simple, fast and efficient; after the putting on the coil is completed, the end of the inner expansion sleeve 4022 protruding from the mounting shaft 2022 contacts the inner wall of the center hole of the wire drum 100, controls the pneumatic pull rod 302 to contract, and makes the outer expansion sleeve 4021 on the pneumatic pull rod 302 move toward the wire drum 100, and is inserted into the inner expansion sleeve 4022 under the drive of the pneumatic pull rod 302 to abut against the inner wall of the center hole of the wire drum 100, so as to achieve the locking of the wire drum 100. Specifically, when the air cylinder 301 is turned on to drive the pneumatic pull rod 302 to contract, the outer expansion sleeve 4021 on the pneumatic pull rod 302 moves toward the inner expansion sleeve 4022, so that the conical head of the outer expansion sleeve 4021 is inserted into the conical mouth of the inner expansion sleeve 4022, and the pneumatic pull rod 302 continues to contract under the drive of the air cylinder 301, so that the outer expansion sleeve 4021 is driven by the pneumatic pull rod 302 to gradually open the conical mouth of the inner expansion sleeve 4022 and abut against the inner wall of the center hole of the wire drum 100, thereby realizing the alignment of the wire drum 100. Locking of the reel 100; when it is necessary to change the reel, the pneumatic pull rod 302 is extended by the cylinder 301, so that the outer expansion sleeve 4021 on the pneumatic pull rod 302 moves in the direction away from the inner expansion sleeve 4022, so that the conical head of the outer expansion sleeve 4021 is disengaged from the conical mouth of the inner expansion sleeve 4022, and the inner expansion sleeve 4022 and the outer expansion sleeve 4021 are separated and restored to a natural state, and the tensioning effect on the center hole of the wire reel 100 is lost, so that the wire reel 100 can be directly removed from the mounting shaft 2022 for reel replacement.

[0031] like Figure 1 and Figure 2 As shown, the pneumatic pull rod 302 is inserted into the outer expansion sleeve 4021 and extends out of the large end of the conical head of the outer expansion sleeve 4021. The extended end of the pneumatic pull rod 302 is provided with an external thread, and a locking member 4023 is threadedly connected to the external thread, which is used to lock the outer expansion sleeve 4021 on the pneumatic pull rod 302. Preferably, the locking member 4023 is a nut. The maximum outer diameter of the locking member 4023 is less than or equal to the maximum outer diameter of the outer expansion sleeve 4021, so that when the outer expansion sleeve 4021 is gradually extended into the conical mouth of the inner sleeve driven by the pneumatic pull rod 302, the locking member 4023 is prevented from limiting the outer expansion sleeve 4021 and affecting the insertion depth of the outer expansion sleeve 4021 in the inner expansion sleeve 4022; and the maximum outer diameter of the locking member 4023 is less than or equal to the inner diameter of the center hole of the wire drum 100, so as to avoid blocking the insertion of the wire drum 100.

[0032] like Figure 1 As shown, the pneumatic pull rod 302 is movably arranged in the main rotating shaft 202 along the axial direction of the main rotating shaft 202, and includes a first pneumatic pull rod 3021 and a second pneumatic pull rod 3022 which are coaxially arranged. One end of the first pneumatic pull rod 3021 is fixed to the output end of the cylinder 301, and the other end is threadedly connected to the second pneumatic pull rod 3022, so that the first pneumatic pull rod 3021 and the second pneumatic pull rod 3022 can be telescopically moved in the main rotating shaft 202 under the drive of the cylinder 301. Specifically, the inner expansion sleeve 4022 is fixed to the inner wall of the installation shaft 2022 and extends in a direction away from the drive shaft 2021. The second pneumatic pull rod 3022 is movably arranged in the inner expansion sleeve 4022. The outer expansion sleeve 4021 is fixed to the end of the second pneumatic pull rod 3022. When in use, the cylinder 301 is turned on to drive the second pneumatic pull rod 3022 to contract, so that the outer expansion sleeve 4021 moves in the direction of the installation shaft 2022 to be inserted into the inner expansion sleeve 4022. The inner expansion sleeve 4022 is in the cylinder 301. It opens under continuous drive and abuts against the inner wall of the center hole of the wire drum 100 to tighten the center hole of the wire drum 100, thereby fixing the upper disk of the wire drum 100; the cylinder 301 is turned on to drive the second pneumatic pull rod 3022 to extend, so that the outer expansion sleeve 4021 moves in a direction away from the installation shaft 2022 to separate from the inner expansion sleeve 4022. After separation, the inner expansion sleeve 4022 returns to its natural state and loses the tension on the center hole of the wire drum 100, so that the wire drum 100 can be removed from the installation shaft 2022 for replacement.

[0033] like Figure 1As shown, a sliding sleeve 303 is provided between the cylinder 301 and the second transmission wheel 2033. The sliding sleeve 303 is movably mounted on the first pneumatic rod 3021 and fixedly connected to the cylinder 301, and is used to guide the axial extension and contraction of the first pneumatic rod 3021, to prevent the first pneumatic rod 3021 from being too long and causing radial shaking, to ensure the smooth movement of the first pneumatic rod 3021, and at the same time to protect the first pneumatic rod 3021 from being affected or damaged by external forces, thereby increasing the service life of the device.

[0034] like Figure 1 As shown, a pneumatic rotary joint 304 is installed at one end of the cylinder 301 away from the pneumatic pull rod 302, which is used to provide power to the output end of the cylinder 301 to drive the pneumatic pull rod 302 fixed to the output end of the cylinder 301 to perform telescopic movement. Preferably, a support seat for providing support is provided at the bottom of the cylinder rotary joint 304, and the cylinder rotary joint 304 is movably matched with the support seat so that the cylinder rotary joint 304 can rotate smoothly on the support seat. Optionally, the cylinder 301 can also be directly connected to the solenoid valve, and gas is introduced into the cylinder 301 through the solenoid valve to drive the pneumatic pull rod 302 at its output end to perform telescopic movement.

[0035] like Figure 1 As shown, the locking device for the wire drum 100 for the enameling machine also includes a base 500 arranged at the bottom for providing support. The bearing seat 201, the cylinder 301 and the rotary drive motor 2031 are fixedly mounted on the base 500 to improve the stability of the device, ensure the stability of the wire drum 100 winding, and improve the winding quality. Optionally, the bearing seat 201, the cylinder 301 and the rotary drive motor 2031 are fixed to the base 500 by screws.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wire reel locking device for an enameling machine, characterized in that: include: A rotation drive mechanism (200) comprises a bearing seat (201), a main rotating shaft (202) movably arranged in the bearing seat (201), and a transmission mechanism (203) mounted on the main rotating shaft (202) for driving the main rotating shaft (202) to rotate; A pneumatic pull rod mechanism (300) comprises a cylinder (301) coaxially arranged with the main rotating shaft (202) and a pneumatic pull rod (302) fixedly mounted on the output end of the cylinder (301), wherein the pneumatic pull rod (302) is movably arranged in the main rotating shaft (202); The clamping mechanism (400) is arranged at one end of the main rotating shaft (202) away from the cylinder (301), and comprises a positioning member (401) and a tensioning member (402) coaxially arranged with the main rotating shaft (202); the tensioning member (402) is arranged at the end of the main rotating shaft (202) and is used to tighten the center hole of the wire drum (100); the positioning member (401) is fixed on the main rotating shaft (202) between the tensioning member (402) and the bearing seat (201) and is used to be plugged into and matched with the wire drum (100) to limit the position of the wire drum (100).

2. The wire reel locking device for an enameling machine according to claim 1, characterized in that: The transmission mechanism (203) comprises a rotary drive motor (2031), a first transmission wheel (2032) fixed to the output end of the rotary drive motor (2031), and a second transmission wheel (2033) transmission-connected to the first transmission wheel (2032); the second transmission wheel (2033) is coaxially arranged and fixedly connected to the main rotating shaft (202).

3. The wire reel locking device for an enameling machine according to claim 1, characterized in that: The main rotating shaft (202) comprises a driving shaft (2021) fixed on the transmission mechanism (203) and a mounting shaft (2022) arranged at one end of the driving shaft (2021) away from the transmission mechanism (203); the driving shaft (2021) and the mounting shaft (2022) are fixedly connected via the positioning member (401); and the tensioning member (402) is installed at one end of the mounting shaft (2022) away from the positioning member (401).

4. The wire reel locking device for an enameling machine according to claim 3, characterized in that: The positioning member (401) comprises a first positioning plate (4011) fixed on the driving shaft (2021) and a second positioning plate (4012) fixed on the mounting shaft (2022); the first positioning plate (4011) and the second positioning plate (4012) are fixedly connected; the end of the second positioning plate (4012) away from the bearing seat (201) is provided with a clamping rod (4013) for plugging and fitting with the wire drum (100) to limit the circumferential rotation of the wire drum (100).

5. The wire reel locking device for an enameling machine according to claim 1, characterized in that: The tensioning member (402) comprises an outer expansion sleeve (4021) fixed to the end of the pneumatic pull rod (302) and an inner expansion sleeve (4022) movably sleeved on the pneumatic pull rod (302). One end of the inner expansion sleeve (4022) is fixed to the inner wall of the main shaft (202), and the other end is arranged to protrude from the end of the main shaft (202) and is used to extend into the center hole of the wire drum (100) and to be plugged into and matched with the outer expansion sleeve (4021) to tighten the center hole of the wire drum (100).

6. The wire reel locking device for an enameling machine according to claim 5, characterized in that: A locking piece (4023) is provided at one end of the outer expansion sleeve (4021) away from the inner expansion sleeve (4022), and the locking piece (4023) is threadedly connected to the end of the pneumatic pull rod (302) for locking the outer expansion sleeve (4021).

7. The wire reel locking device for an enameling machine according to claim 1, characterized in that: The pneumatic pull rod (302) comprises a first pneumatic pull rod (3021) fixed to the output end of the cylinder (301) and a second pneumatic pull rod (3022) fixed to one end of the first pneumatic pull rod (3021) away from the cylinder (301), wherein the second pneumatic pull rod (3022) and the first pneumatic pull rod (3021) are coaxially arranged and fixed by threads.

8. The wire reel locking device for an enameling machine according to claim 7, characterized in that: A sliding sleeve (303) is fixedly mounted on one side of the output end of the cylinder (301); the sliding sleeve (303) is sleeved on the first pneumatic pull rod (3021) and movably cooperates with the first pneumatic pull rod (3021) to guide and protect the extension and retraction of the first pneumatic pull rod (3021).

9. The wire reel locking device for an enameling machine according to claim 1, characterized in that: A pneumatic rotary joint (304) is installed at one end of the cylinder (301) away from the pneumatic pull rod (302) for providing power to the output end of the cylinder (301).

10. The wire reel locking device for an enameling machine according to claim 2, characterized in that: The locking device for the wire drum (100) for an enameling machine further comprises a base (500) for support, and the bearing seat (201), the cylinder (301) and the rotary drive motor (2031) are fixedly mounted on the base (500).

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