Safety handle with automatic falling-off function

Abstract

The utility model relates to the technical field of numerical control machining, and discloses a safety handle with an automatic falling-off function, which comprises a wire winding drum, the end part of the wire winding drum is fixedly connected with a connecting table, the side wall of the connecting table is fixedly connected with a prismatic column, the outer side of the prismatic column is sleeved with a sleeve, and the prismatic column is fixedly connected with the connecting table. A first magnetic block is fixedly connected to the end, away from the connecting table, of the prismatic column, a second magnetic block is fixedly connected to the inner wall of the sleeve, a connecting rod is fixedly connected to the wall of the sleeve, a handle is fixedly connected to the wall of the connecting rod, and a metal elastic strip is fixedly connected to the inner wall of the sleeve. After the handle provided by the utility model is used and the handle is loosened by a hand, the hand-cranking handle is automatically separated from the wire winding drum and falls into the tray, so that a solution is provided for eliminating the potential safety hazard.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to a safety handle with an automatic falling-off function. Background Art

[0002] CNC machining is a technology that uses computers to control machine tools. By inputting program instructions, the machine tool's movement and machining process are controlled, resulting in precise machining of workpieces. CNC machining is widely used in industries such as machinery manufacturing, aerospace, automotive, and mold manufacturing.

[0003] When using a CNC wire-cut EDM machine, manual adjustment of the wire drum is required. The wire drum is equipped with a hand crank that can be easily installed and removed. If the hand crank is not removed after manual adjustment of the wire drum, it may be thrown out when the wire drum rotates at high speed, causing a safety accident. Therefore, this application designs a safety handle with an automatic detachment function. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that when an electric spark CNC wire cutting machine tool is in use, the wire rolling barrel needs to be manually adjusted, and the wire rolling barrel is equipped with a hand crank handle that can be easily installed and disassembled. After the hand crank handle is used to manually debug the wire winding barrel, if the hand crank handle is not removed, when the wire winding barrel rotates at high speed, the hand crank handle may be thrown out, causing a safety accident. A safety handle with an automatic falling-off function is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A safety handle with an automatic shedding function comprises a wire reel, the end of the wire reel is fixedly connected to a connecting platform, a prismatic column is fixedly connected to the side wall of the connecting platform, a sleeve is sleeved on the outer side of the prismatic column, the end of the prismatic column facing away from the connecting platform is fixedly connected to a first magnetic block, the inner wall of the sleeve is fixedly connected to a connecting rod, the rod wall of the connecting rod is fixedly connected to a handle, the inner wall of the sleeve is fixedly connected to a metal elastic strip, the end of the metal elastic strip is pressed tightly against the end of the prismatic column, the end of the sleeve is fixedly connected to an insertion rod, the inner wall of the connecting platform is provided with a slot, and the insertion rod is plugged into the inner wall of the slot.

[0007] Preferably, a rectangular groove is provided on the inner wall of the insertion rod, and the insertion rod is fixedly connected to a fixing rod on the inner wall of the rectangular groove. A clamping plate and a torsion spring are movably sleeved on the rod wall of the fixing rod, one end of the torsion spring is fixedly connected to the inner wall of the clamping plate, and the other end of the torsion spring is fixedly connected to the inner wall of the insertion rod, and a clamping groove is provided on the inner wall of the connecting platform.

[0008] Preferably, a first pull rope is fixedly connected to the side wall of the card plate, a cavity is opened on the inner wall of the sleeve, a slider is slidably provided on the inner wall of the sleeve in the cavity, a spring is fixedly connected to the inner wall of the sleeve in the cavity, the spring is tightly arranged on the side wall of the slider, and the end of the first pull rope facing away from the card plate extends to the interior of the cavity and is fixedly connected to the slider.

[0009] Preferably, a second pull rope is fixedly connected to the connection between the slider and the spring, the second pull rope extends to the inside of the connecting rod and is fixedly connected to a traction rope, and the traction rope extends to the outside of the connecting rod and is fixedly connected to a pull ring.

[0010] Preferably, the end of the card plate is configured as an arc surface, the inner wall of the connecting platform located in the card slot is configured as a fan-shaped groove, and the end of the card plate is pressed against the inner wall of the card slot.

[0011] Preferably, the end of the insertion rod is provided with a rounded corner, and the connecting platform is located on the inner wall of the slot and matches the insertion rod.

[0012] Compared with the prior art, the present invention provides a safety handle with an automatic falling-off function, which has the following beneficial effects:

[0013] 1. The safety handle with automatic falling-off function, when the handle is released, the pull ring and the traction rope lack tension, so that the slider will be pushed by the spring to pull the first pull rope to move, the elastic force of the spring is greater than the torsion force of the torsion spring, so that the first pull rope can be moved to drive the card to shrink to the inner wall of the rectangular groove. At this time, there is no limit between the prismatic column and the sleeve, and the magnetic poles of the first magnetic block and the second magnetic block on the opposite side are the same and are pushed apart under the action of magnetic repulsion. At the same time, the metal elastic strip can play an auxiliary rebound effect, so that the sleeve can fall off from the side wall of the prismatic column, and the handle can fall off automatically.

[0014] 2. The safety handle with automatic shedding function is sleeved on the side wall of the prismatic column through the sleeve, and the insertion rod is inserted into the inner wall of the slot. Pulling the pull ring can pull the traction rope and the movement of the second pull rope can drive the slider to move and drive the spring to compress. At this time, the first pull rope lacks tension, and the torsion spring can push the clamping plate to clamp the inner wall of the slot, which can improve the stability of the insertion rod and sleeve sleeved on the prismatic column, facilitate the subsequent rotation of the handle to drive the connecting rod and sleeve to rotate, and the transmission prismatic column, connecting platform and wire reel to rotate, so that the handle can remain stable and more labor-saving when used.

[0015] 3. The safety handle with automatic detachment function can improve the stability of clamping inside the card slot by setting the end of the card plate as an arc surface. The card slot is set as a fan-shaped groove, which can facilitate the ejection and retraction of the card plate without affecting the clamping effect of the card plate inside the card slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a safety handle with an automatic shedding function proposed by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the partial A in the middle part;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the partial B in the middle part;

[0019] Figure 4 for Figure 2 Structural stereogram of the middle prismatic column.

[0020] In the figure: 1 wire reel, 2 connecting platform, 3 prismatic column, 4 sleeve, 5 first magnetic block, 6 second magnetic block, 7 connecting rod, 8 handle, 9 insertion rod, 10 fixing rod, 11 clamping plate, 12 torsion spring, 13 first pull rope, 14 slider, 15 spring, 16 second pull rope, 17 traction rope, 18 pull ring, 19 metal elastic strip. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figures 1-4 , a safety handle with automatic shedding function, includes a wire winding drum 1, the end of the wire winding drum 1 is fixedly connected to a connecting platform 2, a prismatic column 3 is fixedly connected to the side wall of the connecting platform 2, a sleeve 4 is sleeved on the outside of the prismatic column 3, the end of the prismatic column 3 facing away from the connecting platform 2 is fixedly connected to a first magnetic block 5, the inner wall of the sleeve 4 is fixedly connected to a second magnetic block 6, a connecting rod 7 is fixedly connected to the cylinder wall of the sleeve 4, a handle 8 is fixedly connected to the rod wall of the connecting rod 7, a metal elastic strip 19 is fixedly connected to the inner wall of the sleeve 4, the end of the metal elastic strip 19 is tightly set on the end of the prismatic column 3, the end of the sleeve 4 is fixedly connected to an insertion rod 9, a slot is opened in the inner wall of the connecting platform 2, the insertion rod 9 is inserted in the inner wall of the slot, and the end of the insertion rod 9 is opened with a chamfered corner, and the connecting platform 2 is located on the inner wall of the slot and matches the insertion rod 9.

[0023] The inner wall of the insertion rod 9 is provided with a rectangular groove, and the insertion rod 9 is located on the inner wall of the rectangular groove and is fixedly connected to a fixed rod 10. A card plate 11 and a torsion spring 12 are movably sleeved on the rod wall of the fixed rod 10. One end of the torsion spring 12 is fixedly connected to the inner wall of the card plate 11, and the other end of the torsion spring 12 is fixedly connected to the inner wall of the insertion rod 9. A card groove is provided on the inner wall of the connecting platform 2, and a first pull rope 13 is fixedly connected to the side wall of the card plate 11. The inner wall of the sleeve 4 is provided with a cavity, and the sleeve 4 is located on the inner wall of the cavity. There is a slider 14, and the sleeve 4 is located on the inner wall of the cavity and is fixedly connected to a spring 15. The spring 15 is pressed against the side wall of the slider 14. The end of the first pull rope 13 facing away from the card plate 11 extends to the inside of the cavity and is fixedly connected to the slider 14. The connection between the slider 14 and the spring 15 is fixedly connected to the second pull rope 16. The second pull rope 16 extends to the inside of the connecting rod 7 and is fixedly connected to the traction rope 17. The traction rope 17 extends to the outside of the connecting rod 7 and is fixedly connected to the pull ring 18.

[0024] During use, after the sleeve 4 is sleeved on the side wall of the prismatic column 3, the insertion rod 9 is inserted into the inner wall of the slot. At this time, pulling the pull ring 18 can pull the traction rope 17 and the second pull rope 16 to move, which can drive the slider 14 to move and drive the spring 15 to compress. At this time, the first pull rope 13 lacks tension, and the torsion spring 12 can push the clamping plate 11 to clamp the inner wall of the slot, which can improve the stability of the insertion rod 9 and the sleeve 4 sleeved on the prismatic column 3, facilitate the subsequent rotation of the handle 8 to drive the connecting rod 7 and the sleeve 4 to rotate, and the transmission prismatic column 3, the connecting platform 1 and the wire reel 1 to rotate, so that the handle can remain stable and more labor-saving when used.

[0025] When the handle 8 is subsequently released, the pull ring 18 and the traction rope 17 lack tension, so that the slider 14 will be pushed by the spring 15 to move the first pull rope 13. The elastic force of the spring 15 is greater than the torsion of the torsion spring 12, which can move the first pull rope 13 and drive the card plate 11 to shrink to the inner wall of the rectangular groove. At this time, there is no limit between the prismatic column 3 and the sleeve 4. The magnetic poles of the first magnetic block 5 and the second magnetic block 6 on the opposite side are the same and are pushed apart under the action of magnetic repulsion. At the same time, the metal elastic strip 19 can play an auxiliary role in the rebound, so that the sleeve 4 can fall off from the side wall of the prismatic column 3, and the handle can fall off automatically.

[0026] In order to improve the stability of the clamping of the clamping plate 11 in the clamping slot, as shown in FIG. Figures 1-4 As shown, the end of the card plate 11 is set as an arc surface, the inner wall of the connecting platform 2 located in the card slot is set as a fan-shaped groove, and the end of the card plate 11 is pressed against the inner wall of the card slot.

[0027] The end of the card plate 11 is set as an arc surface to improve the stability of the clamping inside the card slot. The card slot is set as a fan-shaped slot to facilitate the ejection and retraction of the card plate 11 without affecting the clamping effect of the card plate 11 inside the card slot.

[0028] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A safety handle with an automatic detachment function, comprising a wire winding cylinder (1), characterized in that: The end of the winding drum (1) is fixedly connected to a connecting platform (2), a prismatic column (3) is fixedly connected to the side wall of the connecting platform (2), a sleeve (4) is sleeved on the outer side of the prismatic column (3), an end of the prismatic column (3) facing away from the connecting platform (2) is fixedly connected to a first magnetic block (5), an inner wall of the sleeve (4) is fixedly connected to a second magnetic block (6), a connecting rod (7) is fixedly connected to the wall of the sleeve (4), a handle (8) is fixedly connected to the rod wall of the connecting rod (7), a metal elastic strip (19) is fixedly connected to the inner wall of the sleeve (4), the end of the metal elastic strip (19) is pressed against the end of the prismatic column (3), the end of the sleeve (4) is fixedly connected to an insertion rod (9), a slot is provided on the inner wall of the connecting platform (2), and the insertion rod (9) is inserted into the inner wall of the slot.

2. The safety handle with an automatic detachment function according to claim 1, wherein: A rectangular groove is provided on the inner wall of the insertion rod (9), and the insertion rod (9) is fixedly connected to a fixing rod (10) on the inner wall of the rectangular groove. A clamping plate (11) and a torsion spring (12) are movably sleeved on the rod wall of the fixing rod (10), one end of the torsion spring (12) is fixedly connected to the inner wall of the clamping plate (11), and the other end of the torsion spring (12) is fixedly connected to the inner wall of the insertion rod (9), and a clamping groove is provided on the inner wall of the connecting platform (2).

3. The safety handle with an automatic detachment function according to claim 2, wherein: A first pull rope (13) is fixedly connected to the side wall of the card plate (11), a cavity is opened on the inner wall of the sleeve (4), a slider (14) is slidably provided on the inner wall of the cavity of the sleeve (4), a spring (15) is fixedly connected to the inner wall of the cavity of the sleeve (4), and the spring (15) is pressed against the side wall of the slider (14), and one end of the first pull rope (13) facing away from the card plate (11) extends to the interior of the cavity and is fixedly connected to the slider (14).

4. The safety handle with an automatic detachment function according to claim 3, characterized in that: A second pull rope (16) is fixedly connected to the connection point between the slider (14) and the spring (15); the second pull rope (16) extends to the inside of the connecting rod (7) and is fixedly connected to a traction rope (17); the traction rope (17) extends to the outside of the connecting rod (7) and is fixedly connected to a pull ring (18).

5. The safety handle with an automatic detachment function according to claim 2, characterized in that: The end of the card plate (11) is configured as an arc surface, the inner wall of the connecting platform (2) located in the card slot is configured as a fan-shaped slot, and the end of the card plate (11) is pressed against the inner wall of the card slot.

6. The safety handle with an automatic detachment function according to claim 1, characterized in that: The end of the insertion rod (9) is provided with a rounded corner, and the connecting platform (2) is located on the inner wall of the slot and matches the insertion rod (9).

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