Tension controller for metal wire take-up

Abstract

The invention belongs to the technical field of metal wire production, and discloses a metal wire take-up tension controller which comprises a base, a take-up drawing mechanism is arranged on the upper surface of the base, the take-up drawing mechanism comprises two supporting legs which are vertically fixed to the upper surface of the base and symmetrically distributed, and the upper ends of the two supporting legs are fixedly connected with rectangular boxes; a winding shaft penetrating through the two rectangular boxes is rotationally connected between the two rectangular boxes, the winding shaft is driven by external driving equipment, first bevel gears connected to the winding shaft in a sleeving mode are arranged in the two rectangular boxes correspondingly, and transverse shafts perpendicular to the winding shaft are rotationally connected to the two rectangular boxes correspondingly; one end of each transverse shaft is sleeved with a second bevel gear which is located in the rectangular box and meshed with the corresponding first bevel gear, two symmetrically-distributed vertical plates are vertically fixed to the upper surface of the base, and the free ends of the two transverse shafts are rotationally connected to the two vertical plates correspondingly; by means of the structure, tension can be achieved while the metal wire is wound.

Description

Technical Field

[0001] The invention belongs to the technical field of metal wire production, in particular to a tension controller for metal wire take-up. Background Art

[0002] Metal wire is made of metal wire rods, coils or bars, and is processed into wire products of various specifications and models through professional equipment such as wire drawing equipment and annealing equipment. After multiple processes such as drawing-annealing-redrawing-reannealing, the product is called metal wire.

[0003] Wire drawing is a metal plastic processing process in which a wire rod or wire blank is pulled out from the die hole of a wire drawing die under the action of a drawing force to produce a small-section steel wire or non-ferrous metal wire. Wires of various metals and alloys with different cross-sectional shapes and sizes can be produced by drawing.

[0004] In the process of drawing the metal wire, it is often necessary to control the force or the pulling time in order to achieve the preset drawing effect. Traditional metal wire drawing equipment often requires additional wire-winding equipment to wind up the metal wire during use in order to complete the drawing work, resulting in the overall structure of the equipment being not simple enough, and the additional wire-winding equipment definitely requires another power source, which in turn leads to poor energy saving of the overall equipment. Summary of the invention

[0005] In order to solve the problem in the above background technology that an additional wire taking-up device is needed, the present invention provides a tension controller for wire taking-up.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tension controller for wire winding includes a base, a winding and pulling mechanism is arranged on the upper surface of the base, the winding and pulling mechanism includes two supporting legs vertically fixed to the upper surface of the base and symmetrically distributed, the upper ends of the two supporting legs are fixedly connected with rectangular boxes, a winding shaft passing through the two rectangular boxes is rotatably connected, the winding shaft is driven by an external driving device, a first bevel gear sleeved on the winding shaft is arranged in the two rectangular boxes, and a horizontal shaft vertically distributed on the winding shaft is rotatably connected to the two rectangular boxes, a second bevel gear located in the rectangular box and meshing with the first bevel gear is sleeved on one end of the horizontal shaft, two symmetrically distributed vertical plates are vertically fixed to the upper surface of the base, and the free ends of the two horizontal shafts are rotatably connected to the two vertical plates respectively.

[0007] Preferably, two symmetrically distributed rectangular frames are slidably connected to the upper surface of the base, the two transverse axes pass through the two rectangular frames respectively, and a worm located in the rectangular frame is sleeved on the surface of the transverse axis, a discharge shaft is rotatably connected between the two rectangular frames, and both ends of the discharge shaft are sleeved with worm wheels located in the rectangular frame and meshing with the worm.

[0008] Preferably, an adjustment mechanism is provided above the base, and the adjustment mechanism includes a U-shaped seat fixed on the surface of the rectangular frame, the U-shaped seat is penetrated by an inner gear ring rotatably connected thereto, the inner gear ring is penetrated by a circular gear meshing therewith, an electric telescopic rod is fixedly installed between the circular gear and the inner gear ring, and both ends of the discharge shaft are provided with internal tooth grooves matching the circular gear.

[0009] Preferably, a driving rod coaxially fixed with the circular gear is provided on the outer side of the U-shaped seat, a connecting shaft is vertically fixed to the free end of the driving rod, a positioning plate is integrally fixed to the end of the connecting shaft away from the driving rod, a rocker arm is rotatably connected to the supporting leg, and the end of the rocker arm away from the supporting leg is sleeved on the connecting shaft.

[0010] Preferably, a strip-shaped slide groove is provided on the surface of the transverse axis, a rectangular slide bar which is adapted to the strip-shaped slide groove is fixed integrally in the worm, and a locking assembly is provided on the upper surface of the base.

[0011] Preferably, the locking assembly includes two mounting grooves opened on the upper surface of the base and symmetrically distributed, a plurality of equally spaced telescopic round rods are vertically fixed in the mounting grooves, an inclined plane block 1 is fixedly connected to the upper end of the telescopic round rod, and a spring 1 mounted on the telescopic round rod is fixedly connected between the inclined plane block 1 and the inner wall of the mounting groove.

[0012] Preferably, a rod body 1 is vertically fixed to the upper surface of the two rectangular frames, a bending rod is telescopically inserted into the upper end of the rod body 1, a spring 2 is commonly sleeved on the rod body 1 and the bending rod, and the two ends of the spring 2 are respectively fixed on the bending rod and the rod body 1, and a limiting rod is fixedly installed on the free end of the bending rod.

[0013] Preferably, an L-rod is vertically fixed on the upper surface of the two rectangular frames, and an extension rod is telescopically inserted into the free end of the L-rod. The extension rod and the L-rod are jointly sleeved with a same spring three, and the two ends of the spring three are respectively fixed on the L-rod and the extension rod. An inclined plane block two is fixedly installed on the end of the extension rod away from the L-rod, and an inclined plane block three is fixed on the upper surface of the base.

[0014] Preferably, the lower surface of the inclined plane block 2 is inclined, and slopes from top to bottom from the side close to the bending rod to the side far from the bending rod.

[0015] Preferably, a rectangular block is integrally fixed on the upper surface of the second inclined block, and an L-shaped rod is fixed on the upper surface of the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a winding and drawing mechanism, the wire can be wound with tension at the same time, so that the wire drawing work can be completed directly without the use of additional wire-winding equipment, making the overall structure of the device relatively simple, and only one power source is needed to complete the wire-winding and drawing work; 2. By setting an adjustment mechanism, the unwinding shaft can be driven to move in the horizontal direction. The farther the distance between the unwinding shaft and the winding shaft is, the longer the wire is pulled and the more tension it is subjected to. When the distance between the unwinding shaft and the winding shaft is closer, the time for the wire to be pulled is shorter and the tension it receives is less, thus completing the overall tension adjustment of the device. And the unwinding shaft can continue to release the wire outwards during the horizontal movement; 3. By setting a locking component, the position of the unloading shaft and the rectangular frame can be locked to prevent the rectangular frame from moving toward the side of the rectangular box due to tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at B in the middle; Figure 4 For the present invention Figure 1 Schematic diagram of the enlarged structure at C in the middle; Figure 5 The structure of the locking assembly in the present invention is shown in FIG. Figure 1 ; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at D in the middle; Figure 7 The structure of the locking assembly in the present invention is schematically shown. Figure 2 ; Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure at E in the middle.

[0018] In the figure: 1, base; 2, winding and pulling mechanism; 21, supporting leg; 22, rectangular box; 23, winding shaft; 24, first bevel gear; 25, horizontal shaft; 26, second bevel gear; 27, vertical plate; 28, rectangular frame; 29, worm; 210, unwinding shaft; 211, worm wheel; 3, adjustment mechanism; 31, U-shaped seat; 32, inner gear ring; 33, circular gear; 34, electric telescopic rod 1; 35, inner tooth groove; 36, driving rod; 37, connecting rod Connecting shaft; 38, positioning plate; 39, rocker arm; 310, strip slide; 311, rectangular slide; 4, locking assembly; 41, mounting slot; 42, telescopic round rod; 43, inclined plane block one; 44, spring one; 45, rod body one; 46, bending rod; 47, spring two; 48, limit rod; 49, L-rod; 410, extension rod; 411, inclined plane block two; 412, spring three; 413, inclined plane block three; 414, L-shaped rod body; 415, rectangular block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the present invention provides a tension controller for wire winding, comprising a base 1 and a winding and drawing mechanism 2 located on the upper surface of the base 1 .

[0021] The winding and pulling mechanism 2 includes two support legs 21 vertically fixed on the upper surface of the base 1 and symmetrically distributed. The upper ends of the two support legs 21 are fixedly connected to rectangular boxes 22. A winding shaft 23 is rotatably connected between the two rectangular boxes 22 and passes through them. The winding shaft 23 is driven by an external driving device.

[0022] The external driving device is a motor; The winding shaft 23 is driven by the motor to rotate and can wind up the metal wire.

[0023] A first bevel gear 24 sleeved on the winding shaft 23 is provided in each of the two rectangular boxes 22, and a horizontal shaft 25 vertically distributed to the winding shaft 23 is rotatably connected to each of the two rectangular boxes 22. A second bevel gear 26 located in the rectangular box 22 and meshing with the first bevel gear 24 is sleeved on one end of the horizontal shaft 25. This structure enables the winding shaft 23 to rotate while driving the horizontal shaft 25 to rotate synchronously. Two symmetrically distributed vertical plates 27 are vertically fixed to the upper surface of the base 1. The free ends of the two horizontal shafts 25 are rotatably connected to the two vertical plates 27 respectively, and the two vertical plates 27 can support the ends of the horizontal shaft 25.

[0024] Two symmetrically distributed rectangular frames 28 are slidably connected to the upper surface of the base 1, and the two transverse axes 25 pass through the two rectangular frames 28 respectively. The rectangular frames 28 can only slide along the transverse axes 25, and there are movable grooves on both sides of the rectangular frames 28 for the transverse axes 25 to pass through. A worm 29 located in the rectangular frame 28 is sleeved on the surface of the transverse axis 25. A discharge shaft 210 is rotatably connected between the two rectangular frames 28. Both ends of the discharge shaft 210 are sleeved with worm wheels 211 located in the rectangular frame 28 and meshing with the worm gear 29. The worm wheel 211 and the worm gear 29 can both transmit and lock, and can create a speed difference between the discharge shaft 210 and the winding shaft 23.

[0025] like Figure 2 , Figure 3 , Figure 4 As shown, an adjustment mechanism 3 is arranged above the base 1 .

[0026] The adjustment mechanism 3 includes a U-shaped seat 31 fixed on the surface of the rectangular frame 28, and an inner gear ring 32 connected to the U-shaped seat 31 is penetrated, and a circular gear 33 meshing with the inner gear ring 32 is penetrated, and the circular gear 33 can drive the inner gear ring 32 to rotate and can also be extended and retracted in the inner gear ring 32. An electric telescopic rod 34 is fixedly installed between the circular gear 33 and the inner gear ring 32, and both ends of the discharge shaft 210 are provided with inner tooth grooves 35 adapted to the circular gear 33, and the electric telescopic rod 34 can drive the circular gear 33 to enter the inner tooth groove 35; When the circular gear 33 is located outside the inner tooth groove 35, the unloading shaft 210 rotates alone; When the electric telescopic rod 1 34 drives the circular gear 33 to enter the inner tooth groove 35, the discharge shaft 210 can drive the inner tooth groove 35 to rotate, and the inner gear ring 32 and the electric telescopic rod 1 34 also rotate accordingly; Both ends of the electric telescopic rod 34 are bent.

[0027] A driving rod 36 coaxially fixed with the circular gear 33 is arranged on the outside of the U-shaped seat 31. When the circular gear 33 rotates, it can drive the driving rod 36 to rotate accordingly. A connecting shaft 37 is vertically fixed to the free end of the driving rod 36. A positioning plate 38 is integrally fixed to the end of the connecting shaft 37 away from the driving rod 36. A swing rod 39 is rotatably connected to the support leg 21. The end of the swing rod 39 away from the support leg 21 is sleeved on the connecting shaft 37. The positioning plate 38 can prevent the rocker arm 39 from falling off the connecting shaft 37 when the driving rod 36 moves toward the inner tooth groove 35 following the circular gear 33 .

[0028] A strip-shaped slide groove 310 is provided on the surface of the horizontal shaft 25, and a rectangular slide bar 311 adapted to the strip-shaped slide groove 310 is integrally fixed in the worm 29; The worm 29 can not only rotate along the horizontal axis 25 but also slide along the horizontal axis 25 along the rectangular frame 28, thereby preventing the worm 29 from being separated from the worm wheel 211; The two ends of the worm 29 are against the two sides of the rectangular frame 28, so the rectangular frame 28 can drive the worm 29 to move horizontally; like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a locking assembly 4 is provided on the upper surface of the base 1; The locking assembly 4 includes two symmetrically distributed mounting grooves 41 provided on the upper surface of the base 1, a plurality of equally distributed telescopic round rods 42 are vertically fixed in the mounting grooves 41, an inclined plane block 1 43 is fixedly connected to the upper end of the telescopic round rod 42, the side of the inclined plane block 1 43 away from the inclined plane block 3 413 is inclined, and is inclined from top to bottom from the side close to the inclined plane block 3 413 to the side away from the inclined plane block 3 413, and a spring 1 44 sleeved on the telescopic round rod 42 is fixedly connected between the inclined plane block 1 43 and the inner wall of the mounting groove 41; A rod body 45 is vertically fixed to the upper surface of the two rectangular frames 28, and a bending rod 46 is telescopically inserted into the upper end of the rod body 45. A spring 2 47 is commonly sleeved on the rod body 45 and the bending rod 46, and the two ends of the spring 2 47 are respectively fixed on the bending rod 46 and the rod body 45, and a limiting rod 48 is fixedly installed on the free end of the bending rod 46.

[0029] An L rod 49 is vertically fixed to the upper surface of the two rectangular frames 28, and an extension rod 410 is telescopically inserted into the free end of the L rod 49. The extension rod 410 and the L rod 49 are sleeved with a same spring 3 412, and the two ends of the spring 3 412 are respectively fixed to the L rod 49 and the extension rod 410, and an inclined plane block 2 411 is fixedly installed on the end of the extension rod 410 away from the L rod 49, and an inclined plane block 3 413 is fixed to the upper surface of the base 1; The lower surface of the second inclined block 411 is inclined, and slopes from top to bottom from the side close to the bending rod 46 to the side away from the bending rod 46;.

[0030] A rectangular block 415 is integrally fixed on the upper surface of the second inclined block 411 , and an L-shaped rod 414 is fixed on the upper surface of the base 1 .

[0031] The working principle and use process of the present invention: The motor is started to drive the reel 23 to rotate, so that the reel 23 reels the drawn metal wire; When the winding shaft 23 rotates, it can drive the two first bevel gears 24 coaxially fixed thereto to rotate, the first bevel gears 24 can drive the second bevel gears 26 meshing therewith to rotate, and the second bevel gears 26 can drive the horizontal shaft 25 to rotate; When the horizontal shaft 25 rotates, it can drive the worm 29 to rotate, and the worm 29 can drive the worm wheel 211 meshing with it to rotate, and the worm wheel 211 can drive the unwinding shaft 210 to rotate, so that the unwinding shaft 210 releases the metal wire wound on its surface; The unwinding shaft 210 and the reeling shaft 23 have the same rotation direction. The reeling shaft 23 reels the metal wire, and the unwinding shaft 210 releases the metal wire. By setting the cooperation between the worm 29 and the worm wheel 211, the rotation speed of the reeling shaft 23 is greater than that of the unwinding shaft 210. Therefore, the reeling shaft 23 and the unwinding shaft 210 will generate a tension on the metal wire during operation, thereby completing the drawing of the metal wire. When the distance between the unwinding shaft 210 and the reeling shaft 23 is closer, the time for the metal wire to be pulled is shorter, and the tension received is less, thus completing the adjustment of the tension of the whole device; And the unloading shaft 210 can continue to release the metal wire outward during the horizontal movement; When the circular gear 33 rotates, it can drive the driving rod 36 fixed coaxially therewith to rotate, and the driving rod 36 can drive the swing rod 39 to swing through the connecting shaft 37, so that the rectangular frame 28 and the discharge shaft 210 move in the horizontal direction; By providing the positioning plate 38, it is possible to prevent the swing rod 39 from falling off the connecting shaft 37 when the driving rod 36 moves along the circular gear 33 toward the side close to the inner tooth groove 35; A rod body 45 is vertically fixed on the upper surface of the two rectangular frames 28, and a bending rod 46 is telescopically inserted on the upper end of the rod body 45. A spring 47 is sleeved on the rod body 45 and the bending rod 46, and the two ends of the spring 47 are respectively fixed on the bending rod 46 and the rod body 45, and a limit rod 48 is fixed on the free end of the bending rod 46. When the rectangular frame 28 drives the limiting rod 48 to move in the direction indicated by the arrow G, the limiting rod 48 can push the inclined surface block 1 43 downward through the inclined surface of the inclined surface block 1 43, so that the limiting rod 48 moves smoothly. When the limiting rod 48 moves to the preset position, it will be stuck by one of the inclined surface blocks 1 43, so that it cannot move in the opposite direction of the arrow G, so that the rectangular frame 28 and the unwinding shaft 210 will not move toward the side close to the winding shaft 23 due to the pulling force; When the limiting rod 48 moves to the side of the inclined plane block 3 413 along the direction indicated by the arrow G, it will be restricted by the inclined plane block 3 413 and move upward, so that the limiting rod 48 drives the bending rod 46 to move upward, and at the same time, the bending rod 46 pushes the inclined surface of the inclined plane block 2 411 so that the inclined plane block 2 411 moves toward the side close to the L rod 49, so that the bending rod 46 is stuck on the upper surface of the inclined plane block 2 411. At this time, the rectangular frame 28 can drive the limiting rod 48 to move in the opposite direction of the arrow G; When the limit rod 48 moves to the side of the inclined plane block three 413 along the direction indicated by the arrow G, it will be restricted by the inclined plane block three 413 and move upward, so that the limit rod 48 drives the bending rod 46 to move upward. At the same time, the bending rod 46 pushes the inclined surface of the inclined plane block two 411 so that the inclined plane block two 411 moves toward the side close to the L rod 49, so that the bending rod 46 is stuck on the upper surface of the inclined plane block two 411. At this time, the rectangular frame 28 can drive the limit rod 48 to move in the opposite direction of the arrow G.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension controller for taking up a metal wire, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a winding and pulling mechanism (2), the winding and pulling mechanism (2) comprising two supporting legs (21) vertically fixed to the upper surface of the base (1) and symmetrically distributed, the upper ends of the two supporting legs (21) being fixedly connected to a rectangular box (22), a winding shaft (23) passing through the two rectangular boxes (22) being rotatably connected therebetween, the winding shaft (23) being driven by an external driving device, and the two rectangular boxes (22) being provided with a sleeve connected to the winding shaft ( The first bevel gear (24) is arranged on the rectangular box (23), and the two rectangular boxes (22) are rotatably connected to a transverse shaft (25) which is vertically distributed with the winding shaft (23), and one end of the transverse shaft (25) is sleeved with a second bevel gear (26) which is located in the rectangular box (22) and meshes with the first bevel gear (24). Two symmetrically distributed vertical plates (27) are vertically fixed to the upper surface of the base (1), and the free ends of the two transverse shafts (25) are rotatably connected to the two vertical plates (27) respectively.

2. A wire take-up tension controller according to claim 1, characterized in that: The upper surface of the base (1) is slidably connected to two symmetrically distributed rectangular frames (28); the two transverse axes (25) pass through the two rectangular frames (28) respectively; a worm (29) located in the rectangular frame (28) is sleeved on the surface of the transverse axis (25); a discharge shaft (210) is rotatably connected between the two rectangular frames (28); and worm wheels (211) located in the rectangular frame (28) and meshing with the worm (29) are sleeved at both ends of the discharge shaft (210).

3. A wire take-up tension controller according to claim 2, characterized in that: An adjustment mechanism (3) is arranged above the base (1), the adjustment mechanism (3) comprising a U-shaped seat (31) fixed on the surface of the rectangular frame (28), an inner gear ring (32) rotatably connected to the U-shaped seat (31) passes through the U-shaped seat (31), a circular gear (33) meshing with the inner gear ring (32) passes through the inner gear ring (32), an electric telescopic rod (34) is fixedly installed between the circular gear (33) and the inner gear ring (32), and inner gear grooves (35) matching the circular gear (33) are provided at both ends of the discharge shaft (210).

4. A wire take-up tension controller according to claim 3, characterized in that: A driving rod (36) coaxially fixed to the circular gear (33) is arranged on the outside of the U-shaped seat (31); a connecting shaft (37) is vertically fixed to the free end of the driving rod (36); a positioning plate (38) is integrally fixed to one end of the connecting shaft (37) away from the driving rod (36); a swing rod (39) is rotatably connected to the support leg (21); and one end of the swing rod (39) away from the support leg (21) is sleeved on the connecting shaft (37).

5. A wire take-up tension controller according to claim 4, characterized in that: The surface of the transverse axis (25) is provided with a strip-shaped slide groove (310), a rectangular slide bar (311) adapted to the strip-shaped slide groove (310) is integrally fixed in the worm (29), and a locking assembly (4) is provided on the upper surface of the base (1).

6. A wire take-up tension controller according to claim 5, characterized in that: The locking assembly (4) comprises two symmetrically distributed mounting grooves (41) formed on the upper surface of the base (1), a plurality of equally spaced telescopic round rods (42) being vertically fixed in the mounting grooves (41), an inclined surface block (43) being fixedly connected to the upper end of the telescopic round rod (42), and a spring (44) sleeved on the telescopic round rod (42) being fixedly connected between the inclined surface block (43) and the inner wall of the mounting grooves (41).

7. A wire take-up tension controller according to claim 6, characterized in that: A rod body (45) is vertically fixed to the upper surface of each of the two rectangular frames (28); a bending rod (46) is telescopically inserted into the upper end of the rod body (45); a spring (47) is sleeved on the rod body (45) and the bending rod (46); and two ends of the spring (47) are respectively fixed on the bending rod (46) and the rod body (45); and a limit rod (48) is fixedly mounted on the free end of the bending rod (46).

8. A wire take-up tension controller according to claim 7, characterized in that: An L rod (49) is vertically fixed to the upper surface of the two rectangular frames (28); an extension rod (410) is telescopically inserted into the free end of the L rod (49); a spring three (412) is sleeved on the extension rod (410) and the L rod (49); two ends of the spring three (412) are respectively fixed to the L rod (49) and the extension rod (410); an inclined plane block two (411) is fixedly mounted on one end of the extension rod (410) away from the L rod (49); and an inclined plane block three (413) is fixed to the upper surface of the base (1).

9. A wire take-up tension controller according to claim 8, characterized in that: The lower surface of the second inclined surface block (411) is inclined, and is inclined from top to bottom from a side close to the bending rod (46) to a side away from the bending rod (46).

10. A wire take-up tension controller according to claim 8, characterized in that: A rectangular block (415) is integrally fixed to the upper surface of the second inclined surface block (411), and an L-shaped rod body (414) is fixed to the upper surface of the base (1).

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