A sand feeding mechanism for water jet cutting machine

Abstract

A sand feeding mechanism for a water jet cutting machine relates to a field of stone or ceramic processing technology, in particular to the sand feeding mechanism technology for a water jet cutting machine, including a tool fixing seat, a multi-dimensional water jet moving component, and a sand feeding mechanism, characterized in that the sand feeding mechanism includes three sections of sand feeding pipes, the second section of the sand feeding pipe runs through the rotating shaft of the multi-dimensional water jet moving component, the first section of the sand feeding pipe is a hose and is connected between one end of the second section of the sand feeding pipe and the sand joint of the water jet head, the third section of the sand feeding pipe is a hose and is wound into a threaded shape, one end of the third section of the sand feeding pipe is connected to the other end of the second section of the sand feeding pipe, and the other end of the third section of the sand feeding pipe is connected to a sand source. Compared with the prior art, the present invention has the advantages of reliable abrasive supply, not greatly limiting the two-dimensional rotation and swing amplitude and mode of the water jet head, and not allowing the abrasive to penetrate into the bearing and affect the normal rotation of the inverted L-shaped connecting plate.

Description

Technical Field

[0001] The invention relates to the technical field of stone or ceramic processing, in particular to the technology of a sand feeding mechanism for a water jet cutting machine. Background Art

[0002] As disclosed in patent CN 2019224639918, the existing five-axis water jet cutting machine includes a tool fixing seat, an inverted L-shaped connecting plate driven by a rotating motor arranged on the tool fixing seat, a water jet fixing frame driven by a swinging motor arranged on the inverted L-shaped connecting plate, and a water jet head fixed on the water jet fixing frame. The rotation axis of the water jet fixing frame is arranged at an angle with the rotation axis of the inverted L-shaped connecting plate. The rotating motor is located on one side of the rotation axis of the inverted L-shaped connecting plate. The rotating motor drives the rotation of the inverted L-shaped connecting plate through a transmission member. A sand valve is arranged at the rotation axis of the inverted L-shaped connecting plate. The sand valve includes a disc-shaped warehouse body and an end cover arranged on the upper port of the disc-shaped warehouse body. A transmission shaft is arranged on the axis of the disc-shaped warehouse body and passes through the end cover upward. The end cover is connected to the tool fixing seat. The rotating motor drives the transmission shaft to rotate through the transmission member and then drives the rotation of the inverted L-shaped connecting plate. The sand inlet on the end cover is connected to the sand source through a transmission pipe, and the sand outlet at the bottom of the disc-shaped warehouse body is connected to the sand inlet of the water jet head through a transmission hose. When in use, the transmission hose The tube rotates synchronously with the rotation of the L-shaped connecting plate, while the transmission tube does not move. The sand is first introduced into the disc-shaped bin body and then introduced into the water cutter head through the transmission hose. In the middle, the transmission tube or the transmission hose will not be twisted and deformed due to the rotation of the L-shaped connecting plate to close the transmission channel, so that the sand can be reliably supplied while the two-dimensional rotation and swing amplitude and mode of the water cutter head will not be greatly restricted. Therefore, while the abrasive can be reliably supplied, the two-dimensional rotation and swing amplitude and mode of the water cutter head will not be greatly restricted. In this sand valve structure, since the rotating shaft of the inverted L-shaped connecting plate is rotatably connected to the tool fixing seat through a bearing, the disc-shaped bin body set on the rotating shaft is only closed by the end cover. Due to its structure, the cover cannot completely isolate the disc-shaped bin body from the bearing, and the abrasive introduced into the disc-shaped bin body is fine sand. Therefore, during use, the sand is easy to seep out from the gap between the disc-shaped bin body and the end cover and enter the bearing, causing the bearing to fail and affecting the normal rotation of the inverted L-shaped connecting plate. Summary of the invention

[0003] The object of the present invention is to provide a sand feeding mechanism for a water jet cutting machine which can reliably supply abrasive without greatly limiting the two-dimensional rotation and swing amplitude and mode of the water jet head, and the abrasive will not penetrate into the bearing and affect the normal rotation of the inverted L-shaped connecting plate.

[0004] The present invention is implemented as follows: it includes a tool fixing seat, a multidimensional water jet moving component arranged on the tool fixing seat and driven by a rotating motor to drive a water jet head to move in multiple dimensions, and a sand feeding mechanism. The rotating shaft of the multidimensional water jet moving component is connected to the bearing of the tool fixing seat. The rotating motor is located on one side of the rotating shaft of the multidimensional water jet moving component and drives the multidimensional water jet moving component to rotate through a transmission component. The special feature of the present invention is that the sand feeding mechanism includes three sections of sand feeding pipes. The second section of the sand feeding pipe runs through the rotating shaft of the multidimensional water jet moving component. The first section of the sand feeding pipe is a hose and is connected between one end of the second section of the sand feeding pipe and the sand joint of the water jet head. The third section of the sand feeding pipe is a hose and is wound into a threaded shape. The threaded third section of the sand feeding pipe is arranged along the rotating axis of the multidimensional water jet moving component. One end of the threaded third section of the sand feeding pipe is connected to the other end of the second section of the sand feeding pipe. The other end of the threaded third section of the sand feeding pipe is connected to a sand source.

[0005] During operation, the first section of the sand delivery pipe and the second section of the sand delivery pipe rotate synchronously with the overall rotation of the multidimensional water jet moving component. When the overall rotation direction of the multidimensional water jet moving component is consistent with the thread direction of the third section of the sand delivery pipe, the number of thread turns of the third section of the sand delivery pipe increases; when the overall rotation direction of the multidimensional water jet moving component is opposite to the thread direction of the third section of the sand delivery pipe, the number of thread turns of the third section of the sand delivery pipe decreases. In this way, as long as the overall forward and reverse rotation of the multidimensional water jet moving component does not exceed 360 degrees, it can be ensured that the number of thread turns of the third section of the sand delivery pipe does not increase or decrease by more than one circle, thereby ensuring that the thread shape of the third section of the sand delivery pipe will not change, and then ensuring that the third section of the sand delivery pipe guides sand smoothly and will not close the sand guiding channel due to bending. The second section of the sand delivery pipe rotates synchronously with the overall rotation of the multidimensional water jet moving component, ensuring that the second section of the sand delivery pipe will not be twisted due to the overall rotation relative to the multidimensional water jet moving component, thereby ensuring that the second section of the sand delivery pipe guides sand smoothly.

[0006] Here, the multi-dimensional water jet moving component includes an inverted L-shaped connecting plate arranged on a tool fixing seat and driven by a rotating motor, a water jet fixing frame arranged on the inverted L-shaped connecting plate and driven by a swinging motor, and a water jet head fixed on the water jet fixing frame.

[0007] Since the water jet fixing frame swings back and forth within a certain angle (such as within a positive and negative 60 degree angle) instead of cyclically rotating like the rotation of the inverted L-shaped connecting plate, even if the water jet fixing frame swings and rotates to cause relative movement between the transmission hose and the water jet fixing frame, it will not cause the first section of the sand delivery pipe to be twisted and deformed, thereby closing the sand delivery pipe and preventing sand from being transmitted, thereby achieving the purpose of reliable abrasive supply while not greatly restricting the two-dimensional rotation and swing amplitude and mode of the water jet head.

[0008] Compared with the prior art, the present invention has the advantages of reliable abrasive supply without greatly limiting the two-dimensional rotation and swing amplitude and mode of the water jet head, and the abrasive will not penetrate into the bearing to affect the normal rotation of the inverted L-shaped connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural schematic diagram of Embodiment 1 of the sand feeding mechanism for a water jet cutting machine of the present invention;

[0010] Figure 2 It is a structural schematic diagram of Example 2 of the sand feeding mechanism for a water jet cutting machine of the present invention. DETAILED DESCRIPTION

[0011] The present invention is now described in further detail with reference to the accompanying drawings and embodiments:

[0012] like Figure 1 As shown, the present invention comprises a tool fixing seat 1, a multi-dimensional water jet moving component 3 which is arranged on the tool fixing seat 1 and driven by a rotating motor 2 to drive a water jet head 301 to move in multiple dimensions, and a sand feeding mechanism 4, wherein a rotating shaft 302 of the multi-dimensional water jet moving component 3 is connected to a bearing 5 of the tool fixing seat 1, the rotating motor 2 is located on one side of the rotating shaft 302 of the multi-dimensional water jet moving component 3, and the rotating motor 2 drives the multi-dimensional water jet moving component 3 to rotate through a transmission component 6, and the special feature of the sand feeding mechanism 4 is that the sand feeding mechanism 4 comprises three sections of sand feeding pipes, and the second section of the sand feeding pipe 402 passes through the sand feeding pipe 403. The rotating shaft 302 passes through the multi-dimensional water jet moving component 3, the first section of the sand delivery pipe 401 is a hose and is connected between one end of the second section of the sand delivery pipe 402 and the sand joint 303 of the water jet head 301, the third section of the sand delivery pipe 403 is a hose and is wound into a threaded shape, the threaded third section of the sand delivery pipe 403 is arranged along the rotating axis A of the multi-dimensional water jet moving component 3, one end of the threaded third section of the sand delivery pipe 403 is connected to the other end of the second section of the sand delivery pipe 402, and the other end of the threaded third section of the sand delivery pipe 403 is connected to the sand source 7.

[0013] The first section sand delivery pipeline 401, the second section sand delivery pipeline 402 and the third section sand delivery pipeline 403 are manufactured as a whole.

[0014] The multi-dimensional water jet moving component 3 includes an inverted L-shaped connecting plate 304 arranged on the tool fixing seat 1 and driven by the rotating motor 2, a water jet fixing frame 306 arranged on the inverted L-shaped connecting plate 304 and driven by the swinging motor 305, and a water jet head 301 fixed on the water jet fixing frame 306.

[0015] The included angle between the rotation axis of the water jet fixing bracket 306 and the rotation axis of the inverted L-shaped connecting plate 304 is 45 degrees, and the included angle between the cutting line of the water jet head 301 and the rotation axis of the water jet fixing bracket 306 is 45 degrees.

[0016] Example 2: Figure 2 As shown, this embodiment is based on Embodiment 1, the first section sand delivery pipeline 401 and the second section sand delivery pipeline 402 are connected by a first pipe joint 404, and the second section sand delivery pipeline 402 and the third section sand delivery pipeline 403 are connected by a second pipe joint 405.

[0017] Since the first section sand delivery pipe 401 and the third section sand delivery pipe 403 will rotate relative to the multi-dimensional water jet moving component 3 respectively, they will be damaged due to fatigue over time. The use of pipe joints can facilitate the replacement of damaged sand delivery pipes and save maintenance costs because the entire sand delivery mechanism 4 does not need to be replaced.

Claims

1. A sand feeding mechanism for a water jet cutting machine, comprising a tool fixing seat, a multi-dimensional water jet moving member arranged on the tool fixing seat and driven by a rotating motor to drive a water jet head to move in multiple dimensions, and a sand feeding mechanism, wherein the rotating shaft of the multi-dimensional water jet moving member is connected to a bearing of the tool fixing seat, the rotating motor is located on one side of the rotating shaft of the multi-dimensional water jet moving member and drives the multi-dimensional water jet moving member to rotate through a transmission member, characterized in that: The sand delivery mechanism comprises three sections of sand delivery pipes, the second section of the sand delivery pipe runs through the rotating shaft of the multi-dimensional water jet moving component, the first section of the sand delivery pipe is a hose and is connected between one end of the second section of the sand delivery pipe and the sand joint of the water jet head, the third section of the sand delivery pipe is a hose and is wound into a threaded shape, the threaded third section of the sand delivery pipe is arranged along the rotation axis of the multi-dimensional water jet moving component, one end of the threaded third section of the sand delivery pipe is connected to the other end of the second section of the sand delivery pipe, and the other end of the threaded third section of the sand delivery pipe is connected to a sand source, the first section of the sand delivery pipe and the second section of the sand delivery pipe rotate synchronously with the rotation of the multi-dimensional water jet moving component as a whole, and when the rotation direction of the multi-dimensional water jet moving component as a whole is consistent with the thread direction of the third section of the sand delivery pipe, the number of thread turns of the third section of the sand delivery pipe is increased; When the rotation direction of the multi-dimensional water jet moving component as a whole is opposite to the thread direction of the third section of the sand delivery pipe, the number of threads of the third section of the sand delivery pipe is reduced. In this way, as long as the forward and reverse rotation of the multi-dimensional water jet moving component as a whole does not exceed 360 degrees, the number of threads of the third section of the sand delivery pipe can be increased or decreased by no more than one circle, thereby ensuring that the thread shape of the third section of the sand delivery pipe will not change, thereby ensuring that the third section of the sand delivery pipe guides sand smoothly and the sand guiding channel will not be closed due to bending. The second section of the sand delivery pipe rotates synchronously with the rotation of the multi-dimensional water jet moving component as a whole, ensuring that the second section of the sand delivery pipe will not be twisted due to the relative rotation of the multi-dimensional water jet moving component as a whole, thereby ensuring that the second section of the sand delivery pipe guides sand smoothly; The multi-dimensional water jet moving component comprises an inverted L-shaped connecting plate arranged on a tool fixing seat and driven by a rotating motor, a water jet fixing frame arranged on the inverted L-shaped connecting plate and driven by a swinging motor, and a water jet head fixed on the water jet fixing frame; The water jet fixing frame swings back and forth within a positive and negative angle of 60 degrees, and does not rotate in a circular motion like the rotation of the inverted L-shaped connecting plate. Even if the swinging and rotation of the water jet fixing frame causes relative movement between the transmission hose and the water jet fixing frame, it will not cause the first section of the sand delivery pipe to be twisted and deformed, thereby closing the sand delivery pipe and preventing sand from being transported. This achieves the purpose of reliable abrasive supply while not greatly restricting the two-dimensional rotation and swing amplitude and mode of the water jet head.

2. The sand feeding mechanism for a water jet cutting machine according to claim 1, characterized in that: The first section of the sand delivery pipeline and the second section of the sand delivery pipeline are connected through a first pipe joint, and the second section of the sand delivery pipeline and the third section of the sand delivery pipeline are connected through a second pipe joint.

3. The sand feeding mechanism for a water jet cutting machine according to claim 1, characterized in that: The first section of the sand conveying pipeline, the second section of the sand conveying pipeline and the third section of the sand conveying pipeline are manufactured as a whole.

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