KR200455112Y1 - Extended Mendrel - Google Patents

Abstract

The present invention relates to an extended mandrel, and more particularly, to a mechanism structure for easily separating a mandrel by reducing the diameter of an expansion segment connected to an extended mandrel used in the winding operation after the coil winding operation is completed in the winding machine. .

The present invention supports a cylindrical mandrel, and a rotating shaft to rotate smoothly; Located in the center between the left and right fixed discs, the left and right fixed discs coupled to the fixed disc contacting the winding machine support plate, the fixed disc contacting the winding machine support plate coupled to the rotating shaft from the center while penetrating the rotating shaft. A central mandrel is formed by fastening the left and right fixed discs to the central fixed disc and each rod for fixing the fixed disc; A worm gear rotating shaft positioned between a fixed disc contacting the winding machine support plate and a right fixed disc, a gear box connected to the worm gear rotating shaft and fixed to the center of the right fixed disc, and a rotating shaft connected to the gear box; A left and right disc assembly connected to a screw thread inserted in the right-hand screw type screw nut of the rotating shaft and a thread inserted in a left screw type screw nut, and a plurality of extensions for stacking the left and right disc assembly and winding wires or wires Expandable mandrel, characterized in that it is possible to enlarge and reduce the diameter of the segment for expansion by constructing a connecting bar to which the segments are linked.

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Description

{Extension Type Mandrel}

The present invention relates to a mechanism structure for easily separating the extended mandrel used for the winding work after the coil winding work in the designed winding machine by changing the position of the extension segment (50) included in the extended mandrel.

In general, parts with the same shape as a mandrel are used in mechanical processing processes such as press processing or rolling processing under the name of coilers that wind flat plate materials or wires of a certain thickness in a coil shape, or uncoilers that unwind coil materials linearly. Or, it is used in various industries, such as a core rod or a mandrel, used in electric-related parts such as a wound core or an induction coil. Particularly, it is used to rewind the coil after fixing the tip of the coil that has passed through the skin pass mill or pay off reel, which is used when the coiled coil of the hot rolling process is installed and sent to the skin pass mill during the machining process. A tension reel to be used is used.

And in the case of coil manufacturing process among electric parts, coiling or uncoiling is performed by connecting and rotating the mandrel, which is the core of the coil, to the driving motor, where the used mandrel is manufactured. It is made to shrink and expand to meet various inner diameter sizes of coils.

The extension drive of the mendrel is generally of a cam type and a sliding method. Cam type expansion type mendrel is disclosed in Korean Patent Publication No. 10-2008-0023676. 'Extensible reel mandrel', Republic of Korea Patent Publication No. 2003-0053349,'Tension reel grip segmentation device for preventing end mark generation', Republic of Korea Patent Publication No. 10-2005-0061819,'Rubber sleeve slip prevention device for payoff reel' Etc. are disclosed.

The cam-type expandable mandrel presented above is a segment that is installed and rotated at regular intervals between a plurality of segments constituting the outer surface of the mandrel and an operating shaft that moves or rotates back and forth by a hydraulic cylinder or drive motor. It is made of a cam that elevates, but when the outer diameter is small as the cam is installed in the space between the working shaft and the segment and a minimum space to be rotated is secured, the production of the mandrel becomes difficult and the production cost is significantly increased.

Therefore, the cam-type expandable mandrel is applied only to a medium-to-large-sized coil having a large core diameter, and by improving this, it is possible to accommodate both a medium-sized core diameter and a small-sized core diameter.

Republic of Korea Patent Publication 2003-0035551'Coil winder's two-stage extended mandrel device' Republic of Korea Utility Model 20-0438162'Extended reel for coilers and uncoilers', Utility Model Publication No. 2000-0012945,'Cylindrical 'Expansion reel device' and the like discloses a sliding type expandable mandrel.

The conventional sliding-type expansion type mandrel presented above is moved up and down by an operating shaft rotated or rotated by a shared-pressure cylinder or a driving motor, and an inclined sliding surface at an angle formed on the operating shaft or a sleeve coupled thereto. It consists of a plurality of segments with a protruding jaw and an elastic body that pulls the segment toward the center of the mendrel when the mandrel is reduced.

Here, the segment is to cut a pipe-shaped material into equal parts to form a set, or to manufacture a plurality of castings of a certain shape to form a set. Accordingly, the segments installed around the working shaft are radially moved while forming a cylindrical body so that the mandrel is expanded.

Segment type mandrel may differ in the degree of expansion of each segment depending on the processing and assembly precision of the segment and the working shaft, but it is very difficult to maintain an accurate circular cross-section due to expansion or contraction.

In particular, it is most important that the winding core or induction coil of the transformer, which is an electrical-related part, is processed into a coil having a precise circular cross-section to increase efficiency and prevent disturbance. There was a limit to precision expansion.

In addition, only the reversing motion of the working shaft does not smoothly lower the segment in the center direction of the shaft, so an elastic body that pulls the segment is combined with the segment and installed on the mandrel. As the elastic body has to be added to the mandrel, the number of parts constituting the mandrel increases, and the structure thereof becomes complicated, so that assembly, inspection and maintenance of the device are difficult.

In the case of a winding machine that winds a winding coil with an inner diameter of more than 2 meters, it is a common winding method to use a winding coil after using the mendrel and then separating the mendrel. In this case, the coil to be wound is tensioned in the center direction of the mendrel, and since continuous work, a tremendous force accumulates in the center direction of the mandrel supporting the winding coil. A powerful hydraulic force was used to separate the work. In the case of a device for winding a coil having a large inner diameter, a device capable of solving this problem was needed because the size of the device increased and the manufacturing cost was high.

In order to achieve the above object,
The present invention supports a cylindrical mandrel, and a rotating shaft (70) for smooth rotation; A fixed disk (1) in contact with the winding machine support plate coupled to the rotating shaft (70) at the center while penetrating through the rotating shaft (70), and a left fixed disk (10) coupled with the fixing disk (1) in contact with the winding machine support plate. And the right fixed disc (7), the left fixed disc 10 and the right fixed disc (7) located in the middle of the central fixed disc 40, and the fixed disc fixing rod (80) the left fixed disc ( 10) the right fixed disc (7) is fastened to form a cylindrical mandrel; The gear box fixed to the center of the right fixed disk (7) connected to the worm gear rotating shaft (5) and the worm gear rotating shaft (5) located between the fixed disk (1) and the right fixed disk (7) in contact with the winding machine support plate (2), and the rotation shaft 70 connected to the gear box (2); Left and right disc assemblies 20 and 30 connected to the threads 71 inserted into the right screw type screw nut of the rotating shaft 70 and the threads 75 inserted into the left screw type screw nut, and the left and right discs It is possible to enlarge and reduce the diameter of the segment (50) for expansion by configuring the connecting rod (60) to link the assembly (20, 30) and a plurality of segments (50) for stacking while winding wires or wires. It provides an extended mendrel.
In addition, the worm gear rotating shaft support bracket (4) fixed to the fixed disk (1) in contact with the winding machine support plate; A worm gear rotating shaft 5 supported by the worm gear rotating shaft support bracket 4 and driving a spur gear of the gear box 2; The thread 71 inserted into the right screw type screw nut which is fastened with the gear box 2 and conveys the left and right disc assemblies 30 and 20 for transporting the connecting rod and the screw thread 75 inserted into the left screw type screw nut 75 It provides an extended mandrel, characterized in that for clamping the position of the segment for expansion (50) including a rotating shaft (70) with a.
Lastly, the first disc for transporting the connecting rod with a bush inserted therein is provided with screws 71 inserted in the right-hand screw type screw nuts and threads 75 inserted in the left-hand screw type screw nuts at both ends. The transfer guide portion 72, the transfer guide portion 73 of the second and fourth discs for transferring the connecting rod with the bush inserted and the transfer guide portion 74 of the third disc for transferring the connecting rod with the bush inserted A rotating shaft 70 provided; Disc 21 for transporting the connecting rod with the right-hand screw type screw nut inserted, the first disc 22 for transferring the connecting rod with the bush 27 inserted, and the second disc for transferring the connecting rod with the bush 27 inserted ( On the outer circumferential surface of 23), a right disc assembly 20 for transporting a cylindrical connecting rod and a right disc for transporting a connecting rod based on a central fixing disc 40 are combined with a rod 24 for fixing the right disc for transferring the connecting rod With the configuration of the assembly 20 and the left disk assembly 30 for the transfer of the connecting rod symmetrical structure; The thread 71 inserted into the right-hand screw type screw nut of the rotating shaft 70 interlocks with the right-hand screw type screw nut in which the right-hand screw type screw nut of the connecting rod conveying rod 20 is inserted, 21 The right disc assembly 20 for transporting the connecting rod is moved along the outer circumferential surface of the rotating shaft 70 so that the diameter of the expanding segment 50 connected to the connecting rod 60 can be enlarged and reduced. Gives

The expanded mendrel according to the present invention has the following effects.

First, since the structure does not use hydraulic force to expand and contract the expansion and contraction of the plurality of segments 50 included in the mandrel, it is possible to minimize the size of the mechanism and also make the production cost low.

Second, since a gearbox combined with a worm gear and a spur gear having a deceleration function is used, it is possible to contract and expand a plurality of segments for expansion 50 in the axial direction of the mandrel with a small rotational force on the worm gear rotating shaft 5.

Third, when the inner diameter of the mandrel changes slightly due to the tension of the coil during winding work or fails to maintain the roundness, the extended type mandrel proposed in the present invention applies a force against the coil tension to the worm gear rotating shaft (5) to change the inner diameter. There is an advantage that can compensate.

Accordingly, the present invention aims to improve this conventional technical problem, to provide a new type of expandable mandrel that can be easily assembled as a simple structure, and can be easily inspected and repaired.

In particular, the present invention is excellent in retaining and clamping extended segments using worms and spur gears, and this clamping technology ensures that the windings and the mendrel are in close contact, so that the mendrel is smooth regardless of the diameter of the winding core required during winding. It is a structure that can be easily separated when separated to help improve the efficiency of winding work.

The present invention relates to a mechanism structure for easily separating a mandrel from a wire or a wire that is easily wound by changing the position of the extension segment (50) connected to the extended mandrel used in the winding operation after the coil winding operation is finished in the winding machine.

More specifically, when the worm gear rotating shaft 5 supported by the worm gear rotating shaft support bracket 4 fixed to the fixed disk 1 in contact with the winding machine support plate is rotated, the gearbox 2 connected to the worm gear rotating shaft 5 The spur gear rotates, and the rotation shaft 70 connected to the spur gear of the gearbox 2 rotates. And the right disc assembly 20 for transporting the connecting rod inserted into the rotating shaft 70 and the left disc assembly 30 for transporting the connecting rod are moved along the outer circumferential surface of the rotating shaft 70, and the left for transporting the connecting rod The right disc assembly 30 and 20 and the segment for expansion 50 are linked to the connecting rod 60, so that the segment for expansion depends on the moving direction of the left and right disc assemblies 30 and 20 for transporting the connecting rod. It is characterized in that it is possible to enlarge and reduce the diameter of (50). Therefore, it is designed to facilitate the separation of the mandrel from the center of the wound wires after winding the wires or wires.

1 is a perspective view of an extended mendrel with some segments removed to show the internal structure. A rotating shaft 70 supporting a cylindrical mandrel and rotating smoothly; A fixed disk (1) in contact with the winding machine support plate coupled to the rotating shaft (70) at the center while penetrating through the rotating shaft (70), and a left fixed disk (10) coupled with the fixing disk (1) in contact with the winding machine support plate. And the right fixed disc (7), the left fixed disc 10 and the right fixed disc (7) located in the middle of the central fixed disc 40, and the fixed disc fixing rod (80) the left fixed disc ( 10) the right fixed disc (7) is fastened to form a cylindrical mandrel; The gear box fixed to the center of the right fixed disk (7) connected to the worm gear rotating shaft (5) and the worm gear rotating shaft (5) located between the fixed disk (1) and the right fixed disk (7) in contact with the winding machine support plate (2), and the rotation shaft 70 connected to the gear box (2); Left and right disc assemblies 20 and 30 connected to the threads 71 inserted into the right screw type screw nut of the rotating shaft 70 and the threads 75 inserted into the left screw type screw nut, and the left and right discs It is possible to enlarge and reduce the diameter of the segment (50) for expansion by forming a connecting rod (60) linked to the assembly (20, 30) and a plurality of segments (50) for stacking while winding wires or wires. It is an extended mendrel.

The movement of the extension segment 50 is an extension segment in which an extension segment guide bar 51 installed on the side of the extension segment 50 is cut on the upper surface of the right fixed disk 7 and the upper surface of the left fixed disk 10. It moves along the guide surface 6 of the guide bar.

Figure 2 removes the fixing rod 80 coupled to the left and right fixed disks (7, 10) in order to show the interior of the expanded mandrel more specifically, a plurality of extension segments (50) except one ) Is a perspective view showing a removed state, and FIG. 3 is an exploded view of an extended type mandrel.

3 to 4, the inside of the mandrel supports a cylindrical mandrel, and a rotating shaft 70 for smooth rotation passes through the center, and between the right fixed disc 7 and the left fixed disc 10 It is a frame structure with a central fixed disk 40, and the right fixed disk 7 and the left fixed disk 10 left and right fixed disks 7 and 10 are combined with a fixing rod 80 to form a cylindrical mandrel. A frame is formed, and a right disk assembly 20 for transporting a connecting rod and a left disk assembly 30 for transporting a connecting bar are inserted on the left side based on the center fixing disk 40.
The left and right connecting rods are connected to the connecting rods 60 at the ends of the fixing rods 28 and 38 of the disc assemblies 20 and 30 for transport, and the connecting rods 60 are extended segments 50 ) Is linked to the bottom frame.
7 is an exploded view of the right disc assembly 20 for transporting the connecting rod.
The fixing rod 28 is fixed to one side portion is coupled to the original plate, the other side is connected to the connecting rod 60, and is coupled to the right disc fixing rod 24 for transferring the connecting rod to the middle portion.
The fixing rod 28 is a right-hand screw type screw nut of the right-hand disc assembly 20 for the connection rod conveying, the connecting rod conveying disc 21 is inserted, and the bushing-inserting first rod 22 for transferring the connecting rod is inserted. , Combined along the outer circumferential surface of each of the second disks 23 for transporting the connecting rod into which the bush is inserted, is formed in a radial form.

The right disk assembly 20 for transporting the connection bar includes a disk 21 for transporting a connection bar with a right-screw type screw nut inserted, a second disk 23 for transporting a connection bar with a bush inserted, and the right-screw type screw nut. The first disc 22 for transporting the connecting rod with the bush inserted in the middle of the second disc 23 for transporting the connecting rod with the bush inserted therein and the discs 21 , 22, 23) are combined with a rod 24 for fixing the right disk for transporting a plurality of connecting rods along the outer circumferential surfaces, respectively, to form a cylindrical shape as in FIGS. 3 and 7.
The left disk assembly 30 for transporting the connecting rod is symmetrical to the right disk assembly 20 for transporting the connecting bar based on the center fixing disk 40 coupled to the center of the rotating shaft 70.

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4 is a view showing an operation mechanism of an extended mendrel. The expansion mandrel includes a worm gear rotating shaft support bracket 4 fixed to a fixed disk 1 in contact with a winding machine support plate; A worm gear rotating shaft 5 supported by the worm gear shaft support bracket 4 and driving a spur gear of the gear box 2; The thread 71 inserted into the right screw type screw nut which is fastened with the gear box 2 and conveys the left and right disc assemblies 30 and 20 for transporting the connecting rod and the screw thread 75 inserted into the left screw type screw nut 75 ).
When the worm gear rotating shaft 5 inserted into the worm gear rotating shaft supporting bracket 4 is rotated with the above configuration, the spur gear of the gear box 2 connected to the worm gear rotating shaft 5 and the rotating shaft 70 connected to the gear box 2 ) Will rotate. The rotating shaft 70 is provided with a thread 71 inserted into a right-screw type screw nut located at both ends and a thread 75 inserted into a left-screw type screw nut. Due to the above configuration, the left and right disc assemblies 30 and 20 for transporting the connecting rod inserted in the rotating shaft 70 move in the direction of the rotating shaft when the rotating shaft 70 rotates, and the left and right for transporting the connecting rod The connecting rod 60 connected to the fixing rods 28 and 38 of the disc assembly of the disc assemblies 30 and 20 can expand and contract the expansion segment 50 toward the center of the expandable mandrel.
Therefore, after completion of the winding work, the mandrel is easily separated from the center of the wound wires.
In addition, the configuration of the worm gear rotating shaft 5 and the spur gear of the gearbox 2 is characterized by maintaining or clamping the position of the expansion segment 50.
5 is a perspective view of a mandrel in a state where there is no fixation rod 80 for joining the left and right fixed discs 7 and 10, and FIG. 6 is a fixation rod for joining the left and right fixed discs 7 and 10 It is a mandrel perspective view with (80), and FIG. 7 is an exploded view of the right disk assembly 20 for transporting the connecting rod.

8 is a partially cut perspective view of the right fixed disk 7.
It is installed in the gearbox (2) in the center between the fixed disc (1) and the right fixed disc (7) in contact with the winding machine support plate, and the rotation of the worm gear rotating shaft (5) is the spur gear and gearbox of the gearbox (2). (2) is connected to the rotating shaft 70 is rotated. In this way, through the worm and the spur gear, the friction is small, and the advantage of pursuing small size and light weight, and the positioning and maintenance/clamping function of the expanding segment 50 is possible, and the positioning of the expanding segment 50 is also possible. Simultaneously acts as an additional device for and the auxiliary elastic body for returning to the original shape.

9 is a perspective view of the rotating shaft 70. On both ends of the rotating shaft 70, there are threads 71 inserted into the right-screw type screw nut and threads 75 inserted into the left-thread screw nut, and the threads 71 and 75 are left and right for transporting the connecting rod. The left and right disc assemblies 20 and 30 for transporting the connecting rod are transferred in the direction of the rotating shaft 70 in connection with the right screw type screw nut 26 and the bush 27 of the disc assemblies 20 and 30.
To facilitate smooth transfer, the transfer guide portions (72, 73, 74) are placed on the rotating shaft (70), and the connection rod transfer disc (22, 30) with the bushes of the left and right disc assemblies (20, 30) for transfer of the connection rod is inserted. 23, 32, 33) through the center. The guide rods of the rotating shaft 70 are rotated as the rotating shaft 70 rotates, as the rotating rod 70 rotates as the rotating rod 70 is rotated. Slip feed along (72, 73, 74).

10 is an exemplary view before and after the expansion segment 50 is expanded.
Segment type mendrel has the same curvature in a predetermined shape, so even if it forms an accurate circular cross section at initial setting, it cannot maintain an accurate circular cross section due to mismatch of the curvature of the core and the curvature of the segment when expanding or contracting. Have However, in the present design, the circular cross section and the extended segment curvature are reduced only when they are set and separated, so there is an advantage of accurately maintaining the desired circular cross section.

1 is a perspective view of an expandable mendrel with some of the segments for expansion

Figure 2 is a perspective view showing the interior of the extended mendrel

3 is an internal exploded view of an extended mendrel

Figure 4 is an implementation of the operation mechanism of the extended mendrel

Figure 5 is a perspective view of the fixed disk without a rod for fixing the left and right fixed disks

6 is a perspective view of the fixed disk with the left and right fixed disk angle bars

Figure 7 is an exploded view of the right disc assembly for transporting the connecting bar

8 is a partially cut perspective view of the right fixed disc

9 is a perspective view of the rotating shaft

10 is an exemplary view before and after the segment for expansion is expanded.

[Description of codes]

1: fixed disc in contact with the winding machine support plate, 2: gear box, 3: connection bracket, 4: worm gear rotation shaft support bracket, 5: worm gear rotation shaft, 6: guide surface of extension segment guide bar, 7: right fixed disc, 8: Reference surface in contact with the winding machine support plate, 10: left fixed disc, 20: right disc assembly for transporting the connecting rod, 21: disc for transporting the connecting rod with the right screw type screw nut, 22: agent for transferring the connecting rod with the bush inserted 1 disc, 23: 2nd disc for transferring the connecting rod with the bush inserted, 24: rod for fixing the right disc for transferring the connecting rod, 25: round rod for fixing the right disc for transferring the connecting rod, 26: screw nut for right-hand screw type, 27 : Bush, 28: Fixing rod, 30: Left disc assembly for transporting the connecting rod, 31: Disc for transferring the connecting rod with the left-hand screw type screw nut, 32: Third disc for transferring the connecting rod with the bush, 33: 4th disc for transporting the connecting rod with the bush inserted, 34: rod for fixing the left circular plate for transferring the connecting rod, 35: round rod for fixing the left circular plate for transferring the connecting rod, 36: left-hand screw type screw nut, 37: bush, 38: fixing For the rod, 40: center fixing disc, 41: support bracket of the center fixing disc with bearing, 42: weight reduction hole, 50: expansion segment, 51: expansion segment guide bar, 60: connecting rod, 70 : Rotating shaft, 71: Thread inserted into the right-hand screw type screw nut, 72: Transfer guide part of the first disc for transporting the connecting rod with the bush inserted, 73: Second and fourth discs for transferring the connecting rod with the bush inserted Transfer guide part of, 74: transfer guide part of the third disc for transporting the connecting bar with the bush inserted, 75: thread inserted into the left-hand screw type screw nut, 80: angle rod for fixing the left and right fixed disc

Claims (3)

A rotating shaft 70 supporting a cylindrical mandrel and rotating smoothly; A fixed disk (1) in contact with the winding machine support plate coupled to the rotating shaft (70) at the center while penetrating the rotating shaft (70), and a left fixed disk (10) coupled with the fixing disk (1) in contact with the winding machine support plate. And the right fixed disc (7), the left fixed disc 10 and the right fixed disc (7) located in the middle of the central fixed disc 40, and the fixed disc fixing rod (80) the left fixed disc ( 10) the right fixed disc (7) is fastened to form a cylindrical mandrel; The gear box fixed to the center of the right fixed disk (7) connected to the worm gear rotating shaft (5) and the worm gear rotating shaft (5) located between the fixed disk (1) and the right fixed disk (7) in contact with the winding machine support plate (2), and the rotation shaft 70 connected to the gear box (2); Left and right disc assemblies 20 and 30 connected to the threads 71 inserted into the right screw type screw nut of the rotating shaft 70 and the threads 75 inserted into the left screw type screw nut, and the left and right discs It is possible to enlarge and reduce the diameter of the segment (50) for expansion by configuring the connecting rod (60) to link the assembly (20, 30) and a plurality of segments (50) for stacking while winding wires or wires. Extended Mendrel According to claim 1, A worm gear rotating shaft support bracket (4) fixed to the fixed disk (1) in contact with the winding machine support plate; A worm gear rotating shaft 5 supported by the worm gear rotating shaft support bracket 4 and driving a spur gear of the gear box 2; The thread 71 inserted into the right screw type screw nut which is fastened with the gear box 2 and conveys the left and right disc assemblies 30 and 20 for transporting the connecting rod and the screw thread 75 inserted into the left screw type screw nut 75 Expanded mandrel, characterized in that for clamping the position of the segment (50) for expansion, including a rotating shaft (70) with) According to claim 1, Both ends are provided with threads 71 inserted into the right screw type screw nut and threads 75 inserted into the left screw type screw nut. 32, 33, the rotating shaft (70) having a guide portion (72, 73, 74); The rotating shaft 70 penetrates through the center of the disk, and the right screw type screw nut coupled with the thread 71 inserted into the right screw type screw nut of the rotating shaft 70 is inserted into the connecting rod transfer disk 21, bush (27) the second disc 23 for transferring the connecting rod into which the insert was inserted, the disc 21 for transferring the connecting rod into which the right-hand screw type screw nut was inserted, and the second disc for transferring the connecting rod into which the bush 27 was inserted ( 23) a first disk 22 for transporting a connecting rod into which a bush 27 located in the middle is inserted; A fixing rod 28 radially coupled to the outer circumferential surfaces of the respective disks 21, 22, and 23; Cylindrical connection bar transfer right disc assembly 20 including a plurality of connection bar transfer right disc fixing bars 24 coupled to the middle of each of the discs 21, 22, and 23 fixing rods 28 )Wow; Based on the central fixing disk 40 coupled to the center of the rotating shaft 70, it is symmetrical to the right disk assembly 20 for transporting the connecting rod, and the thread 75 inserted into the left-hand screw screw nut of the rotating shaft 70 and A left disk assembly 30 for transporting a connecting bar, including a disk 31 for transporting a connecting bar into which a combined left screw type screw nut is inserted; Expandable mendrel, characterized in that it comprises a connecting rod (60) linked to the fixing rod (28)

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