Strength testing device for production of carbon fiber road glass wheel seat

Abstract

The invention discloses a strength testing device for carbon fiber road wheel seat production, and relates to the technical field of road wheel production. According to the device, a base plate is arranged above a supporting side plate, a side pressing main plate extending upwards is fixedly arranged at one end of the base plate, and an inserting groove part is formed in the top of the side, away from the side pressing main plate, of the base plate. The inserting column hole is formed in one side of the inserting column body, the front end of the carbon fiber lure wheel seat can simulate the design that a fishing rod grab handle is inserted, the front end of the carbon fiber lure wheel seat is limited, meanwhile, the carbon fiber lure wheel seat is arranged between the side pressing main plate and the inserting main column on the other side, and the inserting column body is inserted into the inserting column body through movement of the base plate. And the strength test can be performed on the carbon fiber road glass wheel seat in a simulated use operation state, so that the deformation difference under long-time operation can be measured.

Description

Technical Field

[0001] The present invention belongs to the technical field of the production of fishing reels, and particularly relates to a strength testing device for the production of carbon fiber fishing reel seats. Background Art

[0002] A fishing reel is a fishing tool specifically used for the fishing method of lure fishing, mainly divided into types such as spinning reels, baitcasting reels, and drum reels, which are widely used in both sea fishing and freshwater fishing. The spinning reel is the most common and general type of winding reel, suitable for most fishing scenarios. When using a fishing reel, it needs to be assembled on the handle of the fishing rod, so that the fishing reel is assembled on one side of the handle through a support. When operating, one hand holds the handle of the fishing rod, and the other hand operates the fishing reel.

[0003] During the actual process of lure fishing, it is necessary to frequently make flicking movements of the lure. Since the fishing reel is tightly sleeved on one side of the handle, when exerting force, a certain tilting force will be applied to the fishing reel, which may cause deformation damage between the fishing reel seat and the handle. However, there is a lack of equipment for symmetrically detecting the strength of the fishing reel seat in the existing technology. Summary of the Invention

[0004] In view of the above-mentioned drawbacks existing in the prior art, the present invention provides a strength testing device for the production of carbon fiber fishing reel seats, which can effectively solve the problems of the existing technology.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a strength testing device for the production of carbon fiber fishing reel seats, including: a support base, a functional backing plate fixedly arranged on one side of the support base, a support side plate fixedly arranged on the other side of the support base, an insertion post body arranged on the top of the functional backing plate, an insertion post hole opened on the surface of the insertion post body, and a carbon fiber fishing reel seat clamped into the insertion post hole groove;

[0007] It further includes:

[0008] A base plate is placed above the support side plate. One end of the base plate is fixedly provided with a laterally pressing main board extending upward. On the top of the side of the base plate away from the laterally pressing main board, a plug-in groove part is opened. A plug-in main post is inserted into the groove of the plug-in groove part. A main post side groove is opened on the surface of the plug-in main post. A side groove internal screw is assembled in the groove of the main post side groove. An embedded moving part is connected to the outside of the side groove internal screw. A dynamometer is hung on the surface of the embedded moving part. A through hole is opened at the bottom of the plug-in main post;

[0009] A clamping plate insertion rod is inserted into the through hole. One end of the clamping plate insertion rod is fixedly provided with a pressure measuring clamping plate attached to the side wall of the plug-in main post. A threaded hole is also provided between the two through holes. A clamping plate screw is threadedly connected in the threaded hole. The front end of the clamping plate screw passes through the threaded hole and is connected to the pressure measuring clamping plate.

[0010] Furthermore, the surface of the pressure measuring clamping plate is provided with two groups of clamping plate grooves with upper and lower spacings, and the clamping plate inner screws are installed in the clamping plate grooves, and the clamping plate inner screws are externally engaged with the movable inner sleeve block.

[0011] Furthermore, the top of the movable inner sleeve block is provided with sleeve block insertion holes on both sides, and the center of the movable inner sleeve block is provided with a sleeve block screw hole.

[0012] Furthermore, a disassembly plug is inserted into the sleeve block socket, and a clamping block portion is fixed on the top of the disassembly plug. The thickness of the clamping block portion superimposed on the movable inner sleeve block is less than the groove depth of the clamping plate groove.

[0013] Furthermore, the top of the screw in the upper clamping plate passes through the pressure measuring clamping plate and extends upward to provide a turning handle, and the bottom of the lower support base is provided with a dial.

[0014] Furthermore, a top groove of the functional pad is provided on the top of the functional pad, the bottom of the column body slides along the groove of the top groove of the pad, and a connecting protrusion is fixed on the end surface of the column body away from the column hole.

[0015] Furthermore, an adjusting main screw is installed on the top of the functional pad through a motor, and a clamping piece is fixed to the kit of the external meshing connection of the adjusting main screw.

[0016] Furthermore, an opening pressure plate is attached above the opening of the column insertion hole, and a clamping plate connecting rod is fixed on the top of the opening pressure plate.

[0017] Furthermore, the card connecting rod is slidably connected to the top of the column body, and the bottom of the open pressure plate is fixed with a lower pressing block extending into the column hole groove, and the top of the lower pressing block is fixed with a spring part, and the top of the spring part is connected to the top of the column hole groove.

[0018] Furthermore, a displacement groove is provided on the top of the supporting side plate, a displacement slider sliding along the displacement groove is fixed on the bottom of the base plate, an adjusting sub-screw is installed on the top of the supporting side plate, and a sliding sleeve is fixed on the external meshing connection of the adjusting sub-screw, and a sleeve bending rod is slidably connected inside the sliding sleeve. A circular hole allowing the sleeve bending rod to slide through is provided on the surface of the base plate.

[0019] The present invention has the following beneficial effects:

[0020] The present invention has a stud hole opened on one side of the stud body, enabling the front end of the carbon fiber fishing reel seat to be designed to simulate insertion into the fishing rod handle, limiting the front end of the carbon fiber fishing reel seat. At the same time, on the other side, the carbon fiber fishing reel seat is placed between the side pressure main board and the plug-in main column. Through the movement of the base board, the strength test of the carbon fiber fishing reel seat can be carried out under the simulated use operation state, so as to measure the deformation difference under long-term operation. Moreover, the carbon fiber fishing reel seat can be clamped by using the pressure measuring clamping plate and the side pressure main board, and the stud body on the other side makes a reciprocating motion, thereby carrying out the strength test of the other end of the fishing reel seat under the simulated use operation state. Thus, the symmetrical strength test of both ends of the fishing reel seat can be realized, and the use height of the dynamometer and the clamping patch part can also be adjusted, so as to make adaptive adjustment according to the actual contact points of the fishing reel seat, and improve the applicable range for different fishing reel seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the present invention;

[0023] Figure 2 Side view of the present invention;

[0024] Figure 3 Enlarged view of the side pressure main board of the present invention;

[0025] Figure 4 Enlarged view of the pressure measuring clamping plate of the present invention;

[0026] Figure 5 Structural schematic diagram of the opening pressing plate of the present invention;

[0027] Figure 6 Side view of the opening pressing plate of the present invention;

[0028] Figure 7 Structural schematic diagram of the base board of the present invention;

[0029] Figure 8 Exploded view of the sleeve block jack and the disassembly and assembly stud of the present invention;

[0030] Figure 9 Cross-sectional view of the moving inner sleeve block of the present invention.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1. Support base; 2. Functional backing plate; 3. Support side plate; 4. Plug post body; 5. Top groove of the backing plate; 6. Main adjusting screw; 7. Clamping piece; 8. Connecting convex block; 9. Plug post hole; 10. Open pressing plate; 11. Card plate connecting rod; 12. Lower pressing block; 13. Spring part; 14. Carbon fiber fishing reel seat; 15. Displacement slider; 16. Base plate; 17. Side pressing main board; 18. Auxiliary adjusting screw; 19. Sliding sleeve block; 20. Socketed bending rod; 21. Plugging main column; 22. Plugging groove part; 23. Side groove of the main column; 24. Inner screw in the side groove; 25. Embedded moving part; 26. Dynamometer; 27. Pressure measuring clamping plate; 28. Plug rod of the clamping plate; 29. Screw of the clamping plate; 30. Groove of the clamping plate; 31. Inner screw of the clamping plate; 32. Moving inner sleeve block; 33. Socket hole of the sleeve block; 34. Threaded hole of the sleeve block; 35. Disassembling and assembling plug post; 36. Clamping and pasting block part; 37. Displacement groove part. Detailed implementation manners

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-9As shown in the figure, the present invention is a strength testing device for the production of a carbon fiber fishing reel seat, including: a support base 1, a functional backing plate 2 fixedly arranged on one side of the support base 1, a support side plate 3 fixedly arranged on the other side of the support base 1, an insertion post body 4 arranged on the top of the functional backing plate 2, an insertion post hole 9 opened on the surface of the insertion post body 4, and a carbon fiber fishing reel seat 14 clamped into the groove of the insertion post hole 9; one end of the carbon fiber fishing reel seat 14 is adapted to the width of the insertion post hole 9, the front end of the carbon fiber fishing reel seat 14 can extend into the groove of the insertion post hole 9, and the outer shape of the groove in the insertion post hole 9 is arc-shaped, which can be adapted to the front end of the carbon fiber fishing reel seat 14, and a concave area is also arranged at the bottom of the groove of the insertion post hole 9, so that after the carbon fiber fishing reel seat 14 extends into the groove of the insertion post hole 9, it can move downward by a part, thereby simulating the structure of actual assembly. A backing plate top groove 5 is opened on the top of the functional backing plate 2, and the bottom of the insertion post body 4 extends into the groove of the backing plate top groove 5 to improve the stability of the horizontal movement of the insertion post body 4 above the functional backing plate 2. A connecting convex block 8 is fixedly arranged at one end of the insertion post body 4 away from the insertion post hole 9, and clamping members 7 are arranged on both sides of the connecting convex block 8, so that the clamping members 7 are in a state of clamping on both sides of the connecting convex block 8. A main adjusting screw 6 is connected to the top of the functional backing plate 2 through a motor. After the main adjusting screw 6 rotates, a kit externally engaged with the main adjusting screw 6 moves horizontally along the surface of the main adjusting screw 6, and the top of the kit is fixed to the bottom of the clamping member 7. Therefore, the insertion post body 4 can be driven to move. After the front end of the carbon fiber fishing reel seat 14 is locked, the pulling action in the actual use process can be simulated by the movement of the insertion post body 4 to achieve strength testing.An opening pressing plate 10 is attached to the top position of the opening of the plug hole 9. The bottom of the opening pressing plate 10 is beveled. When the front end of the carbon fiber fishing reel seat 14 is horizontally inserted into the plug hole 9, it will move along the bevel of the opening pressing plate 10. The groove width of the plug hole 9 is adapted to the front end of the carbon fiber fishing reel seat 14, so that the front end of the carbon fiber fishing reel seat 14 can just enter the groove of the plug hole 9 along the bevel of the opening pressing plate 10, and the bottom of the front end of the carbon fiber fishing reel seat 14 moves downward into the concave area. A clamping plate link 11 is fixedly arranged at the top of the opening pressing plate 10. At the same time, the other end of the clamping plate link 11 slides along the top of the plug main body 4, enabling the opening pressing plate 10 to move up and down. A pressing block 12 extending into the groove of the plug hole 9 is arranged at the bottom of the opening pressing plate 10. Both the pressing block 12 and the groove of the plug hole 9 are arc-shaped and match the front end of the carbon fiber fishing reel seat 14. Spring parts 13 are fixedly arranged at the top of both sides of the pressing block 12, and the top ends of the spring parts 13 are fixed to the top of the groove of the plug hole 9. In this way, through the elastic force of the main column side groove 23, after the carbon fiber fishing reel seat 14 moves horizontally and abuts against the opening pressing plate 10 to move it upward, the opening pressing plate 10 will drive the pressing block 12 to compress the spring parts 13. Subsequently, after the carbon fiber fishing reel seat 14 enters the groove of the plug hole 9 and moves downward, the pressing block 12 presses the top of the front end of the carbon fiber fishing reel seat 14 through the elastic action of the spring parts 13, and the opening pressing plate 10 covers the opening of the plug hole 9 again to limit the carbon fiber fishing reel seat 14.

[0037] A displacement groove portion 37 is provided at the top of the support side plate 3, and a displacement slider 15 that slides along the inside of the displacement groove portion 37 is fixedly provided at the bottom of the base plate 16. Multiple groups of the displacement groove portions 37 are horizontally spaced along the upper part of the support side plate 3, so that the displacement slider 15 can enter the carbon fiber fishing reel seat 14 at different positions according to the actual length of the carbon fiber fishing reel seat 14, and thus it can be applicable to carbon fiber fishing reel seats 14 of different lengths for strength testing. Through the connection of the displacement slider 15, the base plate 16 is placed above the support side plate 3. And a side pressure main board 17 extending upward is fixedly provided at one end of the base plate 16. A plug-in groove portion 22 is provided at the top of the side of the base plate 16 away from the side pressure main board 17. A plug-in main column 21 is plugged into the inside of the plug-in groove portion 22. A plug block adapted to the plug-in groove portion 22 is provided at the bottom of the plug-in main column 21. At the same time, there are extension portions on both sides of the bottom of the plug-in main column 21 and they are attached to the side wall of the base plate 16 to keep the plug-in main column 21 stable. After assembly, the plug-in main column 21 and the side pressure main board 17 are parallel to each other, and the plug-in main column 21, the side pressure main board 17 and the base plate 16 form a U-shaped structure. The other end of the carbon fiber fishing reel seat 14 is placed inside the U-shape. Along with the displacement of the base plate 16, the side pressure main boards 17 or the plug-in main columns 21 on both sides can push and press the carbon fiber fishing reel seat 14, thereby simulating the push and press on the other side of the carbon fiber fishing reel seat 14 during actual use, and thus performing strength detection. An adjusting auxiliary screw rod 18 is installed at the top of the support side plate 3. A sliding sleeve block 19 is fixedly provided on the kit externally engaged with the adjusting auxiliary screw rod 18. A socket bending rod 20 is slidably connected inside the sliding sleeve block 19. A round hole allowing the socket bending rod 20 to slide through is provided on the surface of the base plate 16. By sliding the socket bending rod 20 inside the sliding sleeve block 19, the horizontal position of the socket bending rod 20 can be adjusted. At the same time, the round hole on the surface of the base plate 16 also enables the displacement slider 15 to drag the base plate 16 to displace when entering the carbon fiber fishing reel seat 14 at different positions. Driven by the motor connected to the adjusting auxiliary screw rod 18, the sliding sleeve block 19 drags the socket bending rod 20 to move, and further the side pressure main board 17 or the plug-in main column 21 presses one end of the carbon fiber fishing reel seat 14 to perform a simulated strength test.

[0038] A main column side groove 23 is provided on the surface of the plug-in main column 21, and a side groove inner screw 24 is installed in the groove of the main column side groove 23. The side groove inner screw 24 is connected to the outside of the embedded movable part 25, and a dynamometer 26 is hung on the surface of the embedded movable part 25. A through hole is provided at the bottom of the plug-in main column 21, and the dynamometer 26 is embedded in the embedded movable part 25. The embedded movable part 25 can move longitudinally under the drive of the side groove inner screw 24, so as to adjust the action point of the dynamometer 26. The clamping plate insertion rod 28 is passed through the through hole, and the through holes are arranged in two groups with a horizontal spacing. There is a threaded hole between the two groups of through holes, and the clamping plate screw 29 is installed in the threaded hole, wherein one end of the clamping plate screw 29 passes through the threaded hole to connect the pressure clamping plate The other end of the clamping plate rod 28 is positioned between the side pressure main plate 17 and the plug-in main column 21. The front end of the clamping plate rod 28 is fixed to the pressure clamping plate 27, and the other end extends through the through hole to the positions on both sides of the clamping plate screw 29. By lifting the plug-in main column 21 upward and orienting the end face of the pressure clamping plate 27 toward the side pressure main plate 17, the end face of the pressure clamping plate 27 can be used to fit the carbon fiber lure reel seat 14. The pressure clamping plate 27 can be adjusted in distance from the side pressure main plate 17 by rotating the clamping plate screw 29, thereby stably clamping carbon fiber lure reels 14 of different thicknesses using the side pressure main plate 17 and the pressure clamping plate 27.

[0039] The surface of the pressure measuring clamping plate 27 is provided with two groups of clamping plate grooves 30 distributed at upper and lower intervals. A clamping plate inner screw 31 is installed in the clamping plate groove 30. The clamping plate inner screw 31 is externally engaged with a movable inner sleeve block 32. The top of the movable inner sleeve block 32 is provided with a sleeve block socket 33 on both sides. The center of the movable inner sleeve block 32 is provided with a sleeve block screw hole 34. The top of the upper clamping plate inner screw 31 passes through the pressure measuring clamping plate 27 and extends upward to set a turning handle. A dial is provided at the bottom of the lower support base 1. A disassembly plug post 35 is inserted in the sleeve block socket 33. The top of the disassembly plug post 35 The clamping block portion 36 is fixedly provided on the part. The thickness of the clamping block portion 36 superimposed on the movable inner sleeve block 32 is less than the groove depth of the clamping plate groove 30. By turning the dial, the screw 31 in the lower clamping plate can be adjusted. By adjusting the upper handle, the upper spring portion 13 can be adjusted, thereby adjusting the positions of the two groups of movable inner sleeve blocks 32, and then changing the position of the clamping block portion 36 combined with the movable inner sleeve block 32, changing the contact point with the carbon fiber lure reel seat 14, and performing adaptive adjustment according to the actual point position to improve the clamping ability of the carbon fiber lure reel seat 14 with different special-shaped structures.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0041] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intensity testing device for the production of a carbon fiber fishing reel seat, comprising: A support base (1), a functional pad (2) fixed to one side of the support base (1), a support side plate (3) fixed to the other side of the support base (1), a column body (4) provided on the top of the functional pad (2), a column hole (9) provided on the surface of the column body (4), and a carbon fiber lure reel seat (14) inserted into a groove of the column hole (9); It is characterized by further comprising: The base plate (16) is placed above the supporting side plate (3). One end of the base plate (16) is fixed with a side pressure main plate (17) extending upward. The top of the base plate (16) away from the side pressure main plate (17) is provided with a plug-in groove portion (22). The plug-in main column (21) is plugged into the groove of the plug-in groove portion (22). The surface of the plug-in main column (21) is provided with a main column side groove (23). The groove of the main column side groove (23) is equipped with a side groove inner screw (24). The side groove inner screw (24) is connected to an embedded movable portion (25). A dynamometer (26) is hung on the surface of the embedded movable portion (25). The bottom of the plug-in main column (21) is provided with a through hole. A clamping plate insert rod (28) is inserted into the through hole. One end of the clamping plate insert rod (28) is fixed with a pressure measuring clamping plate (27) attached to the side wall of the plug-in main column (21). A threaded hole is further provided between the two groups of through holes. A clamping plate screw (29) is threadedly connected in the threaded hole. The front end of the clamping plate screw (29) passes through the threaded hole and is connected to the pressure measuring clamping plate (27).

2. The strength testing device for the production of a carbon fiber fishing reel seat according to claim 1, characterized in that, The surface of the pressure measuring clamping plate (27) is provided with two groups of clamping plate grooves (30) distributed at upper and lower intervals. A clamping plate inner screw (31) is installed in the clamping plate groove (30), and the clamping plate inner screw (31) is externally engaged with a movable inner sleeve block (32).

3. The strength testing device for the production of a carbon fiber fishing reel seat according to claim 2, characterized in that, The top of the movable inner sleeve block (32) is provided with sleeve block jacks (33) on both sides, and the center of the movable inner sleeve block (32) is provided with a sleeve block screw hole (34).

4. The strength testing device for producing a carbon fiber fishing reel seat according to claim 1, characterized in that, A disassembly plug post (35) is inserted into the sleeve block insertion hole (33), and a clamping block portion (36) is fixed on the top of the disassembly plug post (35). The thickness of the clamping block portion (36) superimposed on the movable inner sleeve block (32) is less than the groove depth of the clamping plate groove (30).

5. The strength testing device for the production of a carbon fiber fishing reel seat according to claim 1, characterized in that, The top of the screw rod (31) in the upper clamping plate passes through the pressure measuring clamping plate (27) and extends upward to provide a rotating handle, and the bottom of the lower supporting base (1) is provided with a dial.

6. The strength testing device for the production of a carbon fiber fishing reel seat according to claim 1, characterized in that, A top groove (5) is provided on the top of the functional pad (2), the bottom of the column body (4) slides along the groove of the top groove (5), and a connecting protrusion (8) is fixed on the end surface of the column body (4) away from the column hole (9).

7. The strength testing device for producing a carbon fiber fishing reel seat according to claim 1, characterized in that, An adjusting main screw (6) is installed on the top of the functional pad (2) via a motor, and a clamping piece (7) is fixed to a set of externally meshed connections of the adjusting main screw (6).

8. A strength testing device for the production of a carbon fiber fishing reel seat according to claim 1, characterized in that, An opening pressing plate (10) is attached to the top of the opening of the column insertion hole (9), and a clamping plate connecting rod (11) is fixed on the top of the opening pressing plate (10).

9. The strength testing device for producing a carbon fiber fishing reel seat according to claim 8, characterized in that, The pallet link rod (11) is slidably connected to the top of the plug post body (4). A downward pressing block (12) extending into the slot of the plug post hole (9) is fixedly provided at the bottom of the opening pressing plate (10). A spring portion (13) is fixedly provided at the top of the downward pressing block (12), and the top of the spring portion (13) is connected to the top of the slot of the plug post hole (9).

10. A strength testing device for the production of a carbon fiber fishing reel seat according to claim 9, characterized in that, A displacement groove portion (37) is formed at the top of the support side plate (3). A displacement slider (15) that slides along the inside of the displacement groove portion (37) is fixedly provided at the bottom of the base plate (16). An adjusting secondary screw rod (18) is installed at the top of the support side plate (3). A sliding sleeve block (19) is fixedly provided on the kit externally engaged with the adjusting secondary screw rod (18). A socketed bending rod (20) is slidably connected inside the sliding sleeve block (19). A round hole allowing the socketed bending rod (20) to slide through is formed on the surface of the base plate (16).

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