CN117163762A - Spool fixing device - Google Patents

Abstract

This application relates to the technical field of bobbin fixing, and provides a bobbin fixing device, which includes a base, a central shaft, a positioning snap ring, a positioning snap cap and a compression spring. A limiting slot is provided at the center of the base, and the central shaft is A limiting piece is provided at one end, the compression spring passes through the central axis and is in contact with the limiting piece, the central axis passes through the center of the base, and the compression spring is located at the limiting piece. In the groove, the positioning cap is connected to one end of the central axis away from the limiting piece, the base is provided with a positioning pin on one side facing the positioning cap, and the positioning ring is movably inserted into the positioning cap. between the base and the positioning cap. Based on this, in this application, when the fixing device rotates, the spool will not shake or shift, so that the spool can maintain the uniformity of the winding process during the winding process, and can also better control the tension of the winding. Tightening force ensures process quality and overall practicality.

Description

A spool fixing device

Technical field

The present application relates to the technical field of bobbin fixing, and in particular to a bobbin fixing device.

Background technique

The traditional spool is installed on the mounting base through fastening bolts. After the installation is completed, the mounting base drives the spool to rotate. When the spool is fully wound with textile thread, remove the bolt, replace it with a new spool, and tighten the bolt again. After repeating it several times, a gap was created between the threads, which caused looseness between the mounting base and the winding shaft, causing the spool to shake when rotating, resulting in uneven winding distribution, so further improvements were needed.

Contents of the invention

In order to improve the above problems, the purpose of this application is to provide a spool fixing device.

A spool fixing device provided by this application adopts the following technical solution:

A spool fixing device includes a base, a central shaft, a positioning snap ring, a positioning snap cap and a compression spring. A limiting slot is provided at the center of the base, a limiting piece is provided at one end of the central shaft, and the compression spring passes through It is provided on the central axis and is in contact with the limiting piece. The central axis passes through the center of the base, and the compression spring is located in the limiting groove. The positioning cap is connected to the One end of the central axis away from the limiting piece, a positioning pin is provided on one side of the base toward the positioning cap, and the positioning ring is movably inserted between the base and the positioning cap. The spool is sleeved on the base and is limited by the positioning pin, and the positioning snap ring is in contact with the spool.

By adopting the above technical solution, before the spool is installed and used, the base is first installed on the shaft core of the external drive motor through fastening bolts, and then the spool is threaded on the base, and at the same time, the positioning pin is inserted into the spool to limit the position. ; After the spool is installed, pull out the positioning cap toward the side away from the spool. At this time, the compression spring is compressed and the positioning ring is inserted between the base and the positioning cap so that the spool can be limited by the positioning pin. Then loosen the positioning cap and extend the compression spring. At this time, the positioning cap contacts the positioning ring, thus stably limiting the installation position of the spool. When the fixing device rotates, the spool will not shake or deflect. By shifting, the bobbin can maintain the uniformity of the winding process during the winding process, and at the same time, it can better control the tension of the winding, ensure process quality, and have strong overall practicability.

Optionally, the base includes a support rod and a first limiting arm, the support rod is integrally formed with the first limiting arm, and the support rod is connected to the center of one side of the first limiting arm to form a T-shaped, the limiting groove is opened on the first limiting arm, and a stainless steel pipe is provided between the central axis and the support rod.

By adopting the above technical solution, the support rod and the first limit arm are integrally formed, so that when the spool is sleeved on the support rod, it can naturally fit with the first limit arm, thereby realizing the limit on one side of the spool, and on the Under the action of the positioning pin, an effective limit is achieved to facilitate the synchronous rotation of the spool; by arranging a stainless steel tube between the central shaft and the support rod, the gap between the support rod and the central shaft can be further reduced during the synchronous rotation. Friction maintains the support stability of the central shaft and further improves the smoothness of the spool during operation.

Optionally, a counterbore is provided in the center of the positioning snap ring, and a plug-in slot is provided on the peripheral side. The plug-in slot is connected to the countersunk hole. When the spool is sleeved on the support rod and one side is against Connected to the first limiting arm, the positioning cap is pulled toward the side away from the support rod, and the compression spring contracts. At this time, the positioning snap ring is inserted into the central shaft through the insertion slot. , and one end of the support rod away from the first limiting arm is in contact with the countersunk hole. After the positioning cap is released, the compression spring extends, and at this time, the positioning cap abuts On the positioning snap ring,

By adopting the above technical solution and using the counterbore opened, when the positioning snap ring is inserted into the support rod, the end of the support rod can quickly contact the counterbore, so that when the positioning snap ring is in contact with the spool, Achieve fast positioning and fit; use the positioning cap to limit the positioning snap ring, so that the positioning snap ring can effectively maintain the limit support of the spool during the process of contacting the spool, so that the spool can be rotated at high speed. There will be no shaking or deflection. This structure makes the process simple and easy to install and remove the positioning snap ring, which indirectly facilitates the quick installation or replacement of the spool.

Optionally, an electromagnetic coil is provided on one side of the first limiting arm facing the support rod. When the spool is sleeved on the support rod, the electromagnetic coil attracts the spool.

By adopting the above technical solution and using the provided electromagnetic coil, when the spool is sleeved on the support rod, in addition to the physical positioning of the positioning pin, the electromagnetic coil is also used to absorb the spool to achieve double limiting of the spool and further improve the stability.

Optionally, it includes a driving base and a moving base, the first limiting arm is fixedly connected to the driving base, the moving base is located on one side of the driving base, and the gap between the driving base and the moving base is A driving part is provided in between, the driving part includes a motor and a screw rod, the screw rod is rotationally connected to the driving base, the screw screw is threadedly connected to the moving base, and the motor is connected to the screw. At one end, the screw drives the movable base close to or away from the driving base; the movable base is provided with a support member that is rotationally connected to the positioning cap.

By adopting the above technical solution and using the provided movable base, the screw drives the movable base away from or close to the installation base, and the movable base drives the support member to contact the positioning cap, so that when the spool is set and ready for winding, the spool There is a certain amount of support at both ends. When the base is rotating, the spool can rotate evenly with the cooperation of the supporting parts, further improving stability.

Optionally, the support member includes a second limiting arm and a telescopic member. The telescopic member includes a telescopic cylinder and a contact block. The second limiting arm is provided with a limiting hole on one side toward the positioning cap. , a relief hole is opened on the peripheral side of the second limiting arm, the telescopic cylinder is vertically installed on the second limiting arm, and the abutting block is connected to the output end of the telescopic cylinder and is located on the Above the second limiting arm, when the positioning cap is inserted into the limiting hole, the telescopic cylinder drives the contact block to be inserted into the relief hole and abut against the Position the card cap.

By adopting the above technical solution and using the second telescopic arm, the positioning cap can be inserted into the limit hole to achieve a rapid support effect; the telescopic cylinder abuts the positioning cap through the abutting block, which can further reduce the positioning The amount of shaking of the clamp cap is to avoid the gap fit between the positioning clamp cap and the relief hole, which will cause the central shaft to shake a lot, thereby affecting the winding quality of the spool.

Optionally, a positioning groove is provided on the peripheral side of the positioning cap. When the positioning cap is inserted into the limiting hole, the positioning groove is connected with the relief hole, and the abutment The block passes through the relief hole and abuts in the positioning groove.

By adopting the above technical solution and using the opened positioning groove, when the abutting block abuts on the positioning groove, the positioning card cap can be automatically pulled out by the movable base. At this time, the positioning card cap does not need to be manually pulled out, and the lifting Process efficiency.

Optionally, the contact block is provided with a limited opening, the positioning snap ring is engaged in the limit opening, and the contact block drives the positioning retaining ring to automatically engage or disengage from the support rod.

By adopting the above technical solution, the positioning snap ring is snapped into the limit opening, so that the abutment block can drive the positioning snap ring to rise and fall at the same time, eliminating the need for manual installation and disassembly, thereby improving process efficiency.

Optionally, when the spool is to be installed on the support rod, the telescopic cylinder drives the positioning snap ring to separate from the support rod through the abutment block, and the abutment block disengages from the positioning groove, At the same time, the screw rod drives the movable base away from the mounting base. At this time, the spool to be wound can be sleeved on the support rod; after the spool is wound, the screw rod drives the movable base. Approach the mounting base so that the positioning snap cap is inserted into the limiting hole. At the same time, the telescopic cylinder drives the positioning snap ring to be inserted into the support rod through the abutment block, and the abutment block abutting in the positioning groove.

By adopting the above technical solution and using the above action structure, the telescopic cylinder and the movable base act simultaneously, which can quickly realize the process of insertion or detachment. In the process of further improving the stability of the operation of the spool, the loading or unloading of the spool can be accelerated. The efficiency of blanking, flexible process design and easy use.

Optionally, the driving base is provided with a first receiving block, the movable base is provided with a second receiving block, and the spool is jointly in contact with the first receiving block and the second receiving block.

By adopting the above technical solution and utilizing the first receiving block and the second receiving block to support and position the spool, the spool can be peripherally protected to avoid contamination of the position near the bottom.

To sum up, this application includes at least one of the following beneficial effects:

1. Before installing and using the spool, first install the base on the shaft core of the external drive motor through fastening bolts, then thread the spool through the base, and at the same time insert the positioning pin on the spool to limit the position; the spool is installed Finally, pull out the positioning card cap toward the side away from the spool. At this time, the compression spring is compressed, and the positioning snap ring is inserted between the base and the positioning card cap so that the spool can be limited by the positioning pin, and then the positioning ring is released. The clamp cap and the compression spring are extended. At this time, the positioning clamp cap is in contact with the positioning snap ring, thereby stably limiting the installation position of the spool. When the fixing device rotates, the spool will not shake or shift, realizing the spool During the winding process, it can maintain the uniformity of the winding process, and at the same time, it can better control the tension of the winding, ensuring the quality of the process, with strong overall practicability and great market promotion value;

2. The support rod and the first limit arm are integrally formed, so that when the spool is sleeved on the support rod, it can naturally fit with the first limit arm, thereby limiting one side of the spool and functioning as a positioning pin. to achieve effective limiting, which is convenient for driving the spool to rotate synchronously; by setting a stainless steel tube between the central axis and the support rod, the friction between the support rod and the central axis can be further reduced during the synchronous rotation, maintaining The support stability of the central shaft further improves the smoothness of the spool during operation;

3. By using the counterbore, when the positioning snap ring is inserted into the support rod, the end of the support rod can quickly contact the counterbore, so that when the positioning snap ring is in contact with the spool, rapid positioning can be achieved. Fitting; the positioning cap is used to limit the positioning snap ring, so that the positioning snap ring can effectively maintain the limit support for the spool during the process of contacting the spool, so that the spool will not produce any damage even when the spool is running at high speed. In order to avoid the phenomenon of shaking or deflection, this structure can be used to simplify the process and quickly realize the installation and removal of the positioning snap ring, which indirectly facilitates the rapid installation or replacement of the spool;

4. Using the second telescopic arm, the positioning cap can be inserted into the limit hole to achieve a quick support effect; the telescopic cylinder contacts the positioning cap through the abutment block, which can further reduce the shaking of the positioning cap. The amount is to avoid the clearance fit between the positioning cap and the relief hole, which will cause the central axis to shake a lot, thereby affecting the winding quality of the spool;

5. The telescopic cylinder and the movable base act simultaneously, which can quickly realize the process of insertion or detachment. In the process of further improving the stability of the spool operation, it can speed up the efficiency of loading or unloading the spool, and the process design is flexible. Easy to use.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present application;

Figure 2 is a cross-sectional view of Figure 1;

Figure 3 is a cross-sectional view of Figure 1 after the bobbin is sleeved;

Figure 4 is a schematic structural diagram of the positioning snap ring of this application;

Figure 5 is a schematic diagram of the overall structure of Embodiment 2 of the present application;

FIG. 6 is a cross-sectional view of FIG. 5 .

Explanation of reference symbols:

100. Base; 110. Limiting groove; 120. Positioning pin; 130. Support rod; 140. First limiting arm; 200. Central shaft; 210. Limiting piece; 300. Positioning snap ring; 310. Counterbore; 320. Plug-in slot; 400. Positioning cap; 410. Positioning slot; 500. Compression spring; 600. Stainless steel tube; 700. Driving base; 710. Driving parts; 711. Motor; 712. Screw; 720. First Undertaking block; 800, movable seat; 810, support; 820 second limit arm; 821, limit hole; 822, relief hole; 830, telescopic member; 831, telescopic cylinder; 832, contact block; 833, Limiting opening; 840, second receiving block; 900, spool.

Detailed ways

In this specification, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like is intended to be in conjunction with a specific feature of the embodiment or example representation. , structures, materials or features are included in at least one embodiment or example of the present application. Furthermore, the specific features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field belonging to this application; the terms used herein are for the purpose of describing specific embodiments only and are not intended to be used in LIMITATIONS ON THIS APPLICATION. In the description of the embodiments of this application, unless otherwise explicitly stated and limited, technical terms such as "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection; it can also be a fixed connection. Detachable connection; or integrated; or mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

Some embodiments of the present application will be described in detail below with reference to Figures 1-6. Those skilled in the art may combine and combine the different embodiments or examples represented in this application and the features of the different embodiments or examples without conflict.

Embodiment 1: A spool fixing device, see Figures 1 and 2, including a base 100, a central shaft 200, a positioning snap ring 300, a positioning cap 400 and a compression spring 500. The base 100 includes a support rod 130 and a first limiter. The arm 140 and the first limiting arm 140 are circular. The supporting rod 130 and the first limiting arm 140 are integrally formed. The supporting rod 130 is connected to the center of one side of the first limiting arm 140 to form a T shape. The first limiting arm A limit slot 110 is provided at the center of the side of 140 away from the support rod 130, and a limit piece 210 is provided at one end of the central shaft 200. The limit piece 210 and the central shaft 200 are integrally formed into a T shape, and the compression spring 500 is inserted through the central shaft 200. , and abuts on the limiting piece 210 , the end of the central shaft 200 away from the limiting piece 210 passes through the limiting groove 110 and the support rod 130 in sequence, and the compression spring 500 is located in the limiting groove 110 .

Among them, the positioning cap 400 is connected to an end of the central shaft 200 away from the limiting piece 210. The first limiting arm 140 is provided with positioning pins 120 on one side facing the support rod 130. There are two positioning pins 120, which are symmetrically distributed on the first positioning arm 140 and the supporting rod 130. On a limiting arm 140. The positioning snap ring 300 is movably inserted between the support rod 130 and the positioning snap cap 400 .

In some embodiments, referring to Figures 2 and 3, before the spool 900 is installed and used, the first limiting arm 140 is installed on the shaft core (not shown in the figure) of the external drive motor 711 through fastening bolts. The spool 900 is inserted through the support rod 130 from one side of the positioning cap 400, and one side of the spool 900 is in contact with the first limiting arm 140, and the positioning pin 120 on the first limiting arm 140 is inserted into the spool. The limit is realized on 900.

After the spool 900 is installed, pull out the positioning cap 400 toward the side away from the spool 900. At this time, the compression spring 500 is compressed, and the positioning ring 300 is inserted between the support rod 130 and the positioning cap 400, so that the spool 900 The position can be limited by the positioning pin 120, and then the positioning cap 400 is released, and the compression spring 500 is extended. At this time, the positioning cap 400 is in contact with the positioning snap ring 300, and the positioning snap ring 300 is in contact with the spool 900 and is away from the first limit. The other side of the position arm 140 thus stably limits the installation position of the spool 900 .

In some embodiments, a stainless steel tube 600 is disposed between the central shaft 200 and the support rod 130 , so that the friction between the support rod 130 and the central shaft 200 can be further reduced during synchronous rotation, and the central shaft 200 can be maintained The support stability further improves the smoothness of the spool 900 during operation.

In some embodiments, a counterbore 310 is provided at the center of the positioning snap ring 300, and a plug-in slot 320 is provided at the periphery. The plug-in slot 320 is connected with the countersunk hole 310, and the spool 900 is sleeved on the support rod 130 and one side is against it. Connected to the first limiting arm 140, the positioning cap 400 is pulled toward the side away from the support rod 130, and the compression spring 500 contracts. At this time, the positioning snap ring 300 is inserted into the central shaft 200 through the insertion slot 320, and the support rod 130 One end away from the first limiting arm 140 is in contact with the countersunk hole 310 of the positioning snap ring 300. The counterbore 310 is used so that when the positioning snap ring 300 is inserted into the support rod 130, the end of the support rod 130 can The positioning snap ring 300 quickly contacts the counterbore 310 so that when the positioning snap ring 300 contacts the spool 900, the positioning snap ring 300 can be quickly positioned and fitted.

In the same way, after the positioning cap 400 is loosened, the positioning cap 400 is in contact with the positioning ring 300. The spool 900 is finally installed and limited through the first limiting arm 140 and the positioning ring 300, and the positioning cap is used. 400 limit positioning snap ring 300, so that the positioning snap ring 300 can effectively maintain the limit support for the spool 900 during the process of contacting the spool 900, so that the spool 900 will not shake even when running at high speed. or offset phenomenon.

It should be noted that in this embodiment, the side of the positioning cap 400 facing the support rod 130 and the side of the support rod 130 facing the positioning cap 400 may be provided with a guide angle (not shown in the figure) to facilitate the positioning of the cap. The ring 300 is inserted between the support rod 130 and the positioning cap 400. With this structure, the positioning cap 400 can be directly inserted into the support rod 130 without having to pull the positioning cap 400 toward the side away from the first limiting arm 140 in advance. and the positioning cap 400. When the positioning cap 400 is inserted between the support rod 130 and the positioning cap 400, the positioning cap 400 can still fully resist the positioning ring 300 under the action of the compression spring 500. catch.

The implementation principle of the embodiment of the present application is: before the spool 900 is installed and used, the base 100 is first installed on the shaft core of the external drive motor 711 through fastening bolts, and then the spool 900 is threaded on the base 100, and at the same time, the positioning pin is 120 is plugged into the spool 900 to limit the position; after the spool 900 is installed, pull out the positioning cap 400 toward the side away from the spool 900. At this time, the compression spring 500 is compressed, and the positioning snap ring 300 is inserted into the base 100 and between the positioning caps 400, so that the spool 900 can be limited by the positioning pin 120, and then release the positioning cap 400, and the compression spring 500 is extended. At this time, the positioning cap 400 abuts the positioning ring 300, thereby stabilizing The installation position of the spool 900 is limited.

Embodiment 2: Referring to Figures 5 and 6, the difference between this embodiment and Embodiment 1 is that an electromagnetic coil is provided on the side of the first limiting arm 140 facing the support rod 130. When the spool 900 is sleeved on the support rod, 130, the electromagnetic coil absorbs the spool 900. Using the set electromagnetic coil, when the spool 900 is set on the support rod 130, in addition to the physical positioning of the positioning pin 120, the electromagnetic coil also absorbs the spool 900 to achieve double limiting. The spool is 900, and the stability is further improved.

In some embodiments, the driving base 700 and the moving base 800 are included, the first limiting arm 140 is fixedly connected to the driving base 700, the moving base 800 is located on one side of the driving base 700, and the driving base 700 is A driving member 710 is provided between the base 700 and the moving base 800. The driving member 710 includes a motor 711 and a screw rod 712. The screw rod 712 is rotationally connected to the driving base 700. The screw is threadedly connected to the moving base 800. The motor 711 is connected to the screw. At one end, the motor 711 is a servo motor 711. When the motor 711 rotates, the screw drives the moving base 800 away from or close to the mounting base.

Specifically, the movable base 800 is provided with a support 810 that is rotationally connected to the positioning cap 400. The movable base 800 drives the support 810 to abut the positioning cap 400, so that the spool 900 is set and ready for winding. , both ends of the spool 900 have a certain supporting force. When the spool 900 is rotationally connected to the driving base 700, the spool 900 can rotate evenly with the cooperation of the support member 810, further improving stability.

In some embodiments, the support member 810 includes a second limiting arm 820 and a telescopic member 830 . The telescopic member 830 includes a telescopic cylinder 831 and a contact block 832 . The second limiting arm 820 is provided with a limited position toward one side of the positioning cap 400 . Position hole 821. A relief hole 822 is opened on the peripheral side of the second limit arm 820. The relief hole 822 is connected with the limit hole 821. The telescopic cylinder 831 is installed vertically on the second limit arm 820 and away from the positioning cap. On one side of 400, the output end of the telescopic cylinder 831 is facing, the abutment block 832 is connected to the output end of the telescopic cylinder 831 and is located above the second limiting arm 820. When the positioning cap 400 is inserted into the limiting hole 821 , the telescopic cylinder 831 drives the abutment block 832 to be inserted into the relief hole 822 and abut against the positioning cap 400 .

Among them, a positioning groove 410 is provided on the peripheral side of the positioning cap 400. When the positioning cap 400 is inserted into the limiting hole 821, the positioning groove 410 is connected with the relief hole 822, and the abutment block 832 passes through the relief hole 822. When the contact block 832 contacts the positioning groove 410 and the positioning groove 410 is opened, the positioning cap 400 can be automatically pulled out by the moving base 800. At this time, the positioning cap 400 is no longer in contact with the positioning groove 410. It needs to be pulled out manually to improve process efficiency.

In some embodiments, the contact block 832 is provided with a limited opening 833, and the positioning snap ring 300 is engaged in the limit opening 833. The contact block 832 drives the positioning retaining ring 300 to automatically engage or disengage from the support rod 130. During the movement, the block 832 can drive the positioning snap ring 300 to rise and fall simultaneously, eliminating the need for manual installation and disassembly, thereby improving process efficiency.

Specifically, when the spool 900 is to be installed on the support rod 130, the telescopic cylinder 831 drives the positioning snap ring 300 to separate from the support rod 130 through the abutment block 832, and the abutment block 832 disengages from the positioning groove 410. At the same time, the screw rod 712 drives the movable base 800. away from the installation base. At this time, the spool 900 to be wound can be set on the support rod 130; after the spool 900 is wound, the screw rod 712 drives the movable base 800 close to the installation base, so that the positioning cap 400 is plugged into the limit In the position hole 821, at the same time, the telescopic cylinder 831 drives the positioning snap ring 300 to be inserted into the support rod 130 through the abutment block 832, and the abutment block 832 abuts in the positioning groove 410. Using the above action structure, the telescopic cylinder 831 moves with the The seats 800 act simultaneously, which can quickly realize the process of insertion or detachment. In the process of further improving the operation stability of the spool 900, it can speed up the efficiency of loading or unloading the spool 900.

In some embodiments, the driving base 700 is provided with a first receiving block 720, and the moving base 800 is provided with a second receiving block 840. The first receiving block 720 and the second receiving block 840 have the same structure, and the spool 900 jointly abuts on On the first receiving block 720 and the second receiving block 840, the first receiving block 720 and the second receiving block 840 are used to support and position the spool 900, so that the spool 900 can be peripherally protected to avoid contamination near the bottom.

The examples of this specific implementation mode are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. The same components are represented by the same reference numerals. Therefore: all equivalent changes made based on the structure, shape, and principle of this application should be covered by the protection scope of this application.

Claims (10)

1. A spool fixation device characterized by: contain base (100), center pin (200), location snap ring (300), location block cap (400) and compression spring (500), spacing groove (110) have been seted up in the center department of base (100), the one end of center pin (200) is provided with spacing piece (210), compression spring (500) wear to locate center pin (200), and the butt in spacing piece (210), center pin (200) pass the center of base (100), just compression spring (500) are located in spacing groove (110), location block cap (400) connect in center pin (200) keep away from the one end of spacing piece (210), base (100) orientation one side of location block cap (400) is provided with locating pin (120), location block ring (300) activity peg graft in between base (100) and location block cap (400), the spool is located on base (100), and through locating pin (120) spacing, location block cap (300) butt in on the spool.

2. A spool fixation device according to claim 1 wherein: the base (100) comprises a supporting rod (130) and a first limiting arm (140), the supporting rod (130) and the first limiting arm (140) are integrally formed, the supporting rod (130) is connected to one side center of the first limiting arm (140) to form a T shape, the limiting groove (110) is formed in the first limiting arm (140), and a stainless steel tube (600) is arranged between the central shaft (200) and the supporting rod (130).

3. A spool fixation device according to claim 2 wherein: the center department of location snap ring (300) has seted up counter bore (310), and grafting groove (320) have been seted up to the week side, grafting groove (320) with counter bore (310) intercommunication, spool cover is located bracing piece (130) and one side butt in first spacing arm (140), location block cap (400) are kept away from one side pulling of bracing piece (130), compression spring (500) shrink, at this moment location snap ring (300) peg graft in center pin (200) through grafting groove (320), just bracing piece (130) are kept away from one end butt of first spacing arm (140) in counter bore (310), loosen behind location block cap (400), compression spring (500) are elongated, location block cap (400) butt in at this moment on location snap ring (300).

4. A spool fixation device according to claim 2 wherein: and an electromagnetic coil is arranged on one side of the first limiting arm (140) facing the supporting rod (130), and when the spool is sleeved on the supporting rod (130), the electromagnetic coil adsorbs the spool.

5. A spool fixation device according to claim 4 wherein: the device comprises a driving seat (700) and a moving seat (800), wherein the first limiting arm (140) is fixedly connected to the driving seat (700), the moving seat (800) is positioned on one side of the driving seat (700), a driving piece (710) is arranged between the driving seat (700) and the moving seat (800), the driving piece (710) comprises a motor (711) and a screw rod (712), the screw rod (712) is rotationally connected with the driving seat (700), the screw rod is in threaded connection with the moving seat (800), the motor (711) is connected to one end of the screw rod, and the screw rod drives the moving seat (800) to be close to or far away from the driving seat (700); the movable seat (800) is provided with a supporting piece (810) which is rotationally connected with the positioning clamp cap (400).

6. A spool fixation device according to claim 5 wherein: the support piece (810) comprises a second limiting arm (820) and a telescopic piece (830), the telescopic piece (830) comprises a telescopic cylinder (831) and an abutting block (832), one side of the second limiting arm (820) faces the positioning clamp cap (400) is provided with a limiting hole (821), a yielding hole (822) is formed in the periphery of the second limiting arm (820), the telescopic cylinder (831) is vertically installed in the second limiting arm (820), the abutting block (832) is connected to the output end of the telescopic cylinder (831) and located above the second limiting arm (820), and when the positioning clamp cap (400) is inserted in the limiting hole (821), the telescopic cylinder (831) drives the abutting block (832) to be inserted in the yielding hole (822) and abut against the positioning clamp cap (400).

7. A spool fixation device according to claim 6 wherein: the positioning groove (410) is formed in the periphery of the positioning clamp cap (400), when the positioning clamp cap (400) is arranged in the limiting hole (821) in a penetrating mode, the positioning groove (410) is communicated with the yielding hole (822), and the abutting block (832) passes through the yielding hole (822) to abut against the positioning groove (410).

8. A spool fixation device according to claim 7 wherein: the supporting block (832) is provided with a limiting opening (833), the positioning clamping ring (300) is clamped in the limiting opening (833), and the supporting block (832) drives the positioning clamping ring (300) to be automatically clamped or separated from the supporting rod (130).

9. A spool fixation device according to claim 7 wherein: when the spool is to be mounted on the supporting rod (130), the telescopic cylinder (831) drives the positioning clamping ring (300) to be separated from the supporting rod (130) through the abutting block (832), the abutting block (832) is separated from the positioning groove (410), and meanwhile, the screw rod (712) drives the movable seat (800) to be separated from the mounting seat, so that the spool to be wound can be sleeved on the supporting rod (130); after the spool winds the wire, the screw rod (712) drives the movable seat (800) to be close to the mounting seat, so that the positioning clamp cap (400) is inserted into the limiting hole (821), meanwhile, the telescopic cylinder (831) drives the positioning clamp ring (300) to be inserted into the supporting rod (130) through the abutting block (832), and the abutting block (832) is abutted into the positioning groove (410).

10. A spool fixation device according to claim 5 wherein: the driving seat (700) is provided with a first bearing block (720), the moving seat (800) is provided with a second bearing block (840), and the bobbins are jointly abutted to the first bearing block (720) and the second bearing block (840).