JP7384610B2 - hose piping structure - Google Patents

Description

The present invention relates to a hose piping structure for connecting multiple hoses in a narrow space.

For example, a machine tool is configured with a fluid circuit in which compressed air and coolant are sent to a turret device, and lubricating oil is supplied to a drive unit for moving a tool to a processing position. Processing equipment that uses these various fluids is equipped with multiple hoses that are connected at various locations. FIG. 5 is a perspective view showing a conventional hose piping structure for connecting hoses within a machine tool. Here, a branch flow path is constructed in which two hoses 101 and 102 are piped to the base block 100, and various joints such as elbows 111, 112, 113, a cheese 115, and an adapter 116 are used.

Japanese Patent Application Publication No. 2004-316667

However, in the conventional hose piping structure, since joints such as the elbow 111 and the cheese 115 are screwed, it is difficult to adjust the angle for piping the hoses 101 and 102 in a predetermined direction. In addition, since the hose rotates when the threaded portion is tightened, the hose must be assembled later, making piping work difficult in a narrow space such as inside a machine tool. The piping work requires the use of tools such as spanners to tighten joints, but tools with long handles are difficult to handle in narrow spaces.

Therefore, an object of the present invention is to provide a hose piping structure suitable for piping in a narrow place, in order to solve this problem.

The hose piping structure according to the present invention includes a base block having a female-threaded base side connection port, and an input side connection port for the base side connection port, and the input side connection port and two or more branched flows. A branch block is formed with two or more hose connection ports that communicate with each other via a channel, and a male threaded portion screwed into the base side connection port is formed on one end of the cylindrical member, and the input side is formed on the other end of the cylindrical member. a block joint that is formed with a fitting portion that is fitted into the connection port and connects flow paths between the base block and the branch block; and a fixing bracket that fixes the base block and the branch block connected by the block joint. The fixing bracket is arranged to fix the hose connection port side of the branch block together with the base block, and is provided with a holding fitting to fix the branch block to the fixing bracket.

According to the above configuration, one end of the block joint is screwed into the base side connection port as a male threaded portion, and the fitting portion of the block joint pushed up into the base block is fitted into the input side connection port of the branch block. , the flow paths of the base block and the branch block are connected, and both blocks are fixed by a fixing bracket. At this time, since the branch block is connected to the block joint with the hose connected to the branch block in advance, piping can be easily performed even in a narrow space.

It is a perspective view shown from one direction about a hose piping structure. It is a perspective view shown from another direction about a hose piping structure. FIG. 3 is a sectional view showing a connecting portion between a manifold and a branch block. FIG. 3 is a cross-sectional view showing a connecting portion between a manifold and a branch block in a separated state. FIG. 2 is a perspective view showing a conventional hose piping structure.

An embodiment of a hose piping structure according to the present invention will be described below with reference to the drawings. 1 and 2 are perspective views showing the hose piping structure from different directions. The hose piping structure of this embodiment is built into a machine tool, and branches coolant flowing through a manifold 1 into two hoses 3 and 4. Inside the manifold 1, in addition to the flow to the hoses 3 and 4, flow paths are formed that flow to a plurality of output ports 11 via coolant valves (not shown). Note that the manifold 1 is the same as the base block 100 shown in FIG.

The manifold 1 is a block in the shape of a rectangular parallelepiped, and is arranged with its longitudinal direction vertical in the machine tool. The manifold 1 is configured such that four tapped output ports 11 are formed on one side, and four coolant valves (not shown) are assembled on the adjacent mounting surface 12 shown by cross hatching. ing. The manifold 1 has an input port 15 (see FIG. 3) formed on the lower surface, and internal channels communicating with the four output ports 11 are switched between communication and cutoff by opening and closing a coolant valve.

Here, FIGS. 3 and 4 are cross-sectional views showing a connecting portion between the manifold 1 and the branch block 2. As shown in FIG. The manifold 1 has an output port 16 formed on the upper surface 14 and a flow path 17 communicating with the input port 15 on the lower surface 13. Although not shown, this flow path 17 is connected to a flow path that communicates with the four output ports 11 via coolant valves. A plurality of ports are thus formed in the manifold 1, and the output port 11, the input port 15, and the output port 16 are all tapped screw types.

Next, the branch block 2 allows the coolant flowing through the manifold 1 to flow in two directions, and the flow path is such that a horizontal flow path 22 is connected to an input port 21, and two output ports 23 are connected to the horizontal flow path 22. , 24 are formed so as to communicate with each other. Hoses 3 and 4 for sending coolant to predetermined locations within the machine tool are connected to the output ports 23 and 24 via hose joints 25 and 26, respectively. The hose piping structure of this embodiment is configured such that the branch block 2 to which the hoses 3 and 4 are connected can be connected to the manifold 1 in that state.

To connect the manifold 1 and the branch block 2, a block joint 5 is embedded in the joint where the two overlap, and the output port 16 and the input port 21 are connected so as to communicate both channels. Here, in the manifold 1 which is a base block, the output port 16 is a base side connection port, and the input port 21 of the branch block 2 is connected thereto as an input side connection port. The block joint 5 is a cylindrical member that matches the output port 16 and the input port 21, and is divided into two parts in the axial direction: a threaded part 5A on the manifold 1 side and a fitting part 5B on the branch block 2 side.

The threaded portion 5A of the block joint 5 on the manifold 1 side is formed with a male thread 51 that engages with a female thread 160 formed in the output port 16, and is a tapered thread because airtightness is particularly required. On the other hand, in the fitting part 5B of the block joint 5 on the side of the branch block 2, an O-ring 52 is inserted into the annular groove on the center side of the cylindrical outer circumferential surface that is fitted into the input port 21, and the end side has a 180° angle. Plane portions 53 for rotation transmission are formed at symmetrical positions.

A wrench is fitted into the block joint 5 so as to sandwich two flat portions 53, and the rotated male screw 51 is tightened into the female screw 160 of the output port 16. The block joint 5 fixed to the manifold 1 has a fitting part 5B protruded from the upper surface 14, and the branch block 2 with the hoses 3 and 4 connected has its input port 21 located above the fitting part 5B. It is designed to be inserted from The manifold 1 and the branch block 2 are connected by a block joint 5, so that their flow paths communicate with each other.

By the way, the above-mentioned Patent Document 1 discloses a configuration in which a joint is embedded similarly to the present embodiment in order to connect the flow paths of the block-shaped first and second valve bodies. The joint is a cylindrical member having a partition wall in the center and O-rings fitted in both ends. Such fittings are incorporated into each valve body with mating surfaces superimposed on each other.

However, in the conventional structure in which both sides are sealed with O-rings, there is a risk that the O-rings may become misaligned in a structure where vibrations are transmitted, such as a machine tool. Moreover, since the coolant flowing through the machine tool contains chips, this will damage the O-ring and reduce the sealing performance. Therefore, a threaded portion 5A is formed as a connection structure between the block joint 5 and the manifold 1. On the other hand, the connection structure between the block joint 5 and the branch block 2 is a fitting structure because a screw-in structure is not appropriate in a narrow space.

Next, in the hose piping structure, as shown in FIGS. 1 and 2, hoses 3 and 4 extend from the branch block 2, and when the machine tool is in operation, the connection between the manifold 1 and the branch block 2 is caused by vibration. A moment acts on . In this regard, in the present embodiment, one side of the block joint 5 is a threaded portion 5A, and the male thread 51 is screwed into the female thread 160 of the output port 16 to be firmly connected. However, since the branch block 2 side is of a fit-in type, if left as is, the connection portion may become misaligned.

Therefore, a fixing bracket 6 is used to make the branch block 2 and the manifold 1 an integral structure. The fixing bracket 6 is arranged on the hoses 3 and 4 side so as to support the load caused by the moment, and has a flat surface that widely contacts the entire side of the manifold 1 and the lower portion of the output ports 23 and 24 in the branch block 2. It has a shaped fixing part 61. The fixing part 61 has bolt holes formed at a plurality of locations, is applied to the manifold 1 or the branch block 2, and is fixed using bolts and nuts. In addition, projecting parts 611 are formed on both left and right sides of the fixing part 61 in accordance with the position of the branch block 2, and holding fittings 7 are provided therein in order to more stably fix the branch block 2.

The holding fitting 7 has a U-shape that matches the shape of the branching block 2, and further bent portions at both ends thereof are overlapped with the overhanging portions 611. Both ends of the holding fitting 7 are fixed to the fixing bracket 6 with bolts, and are also fixed to the branch block 2 with bolts. Therefore, even if one of the block joints 5 is a fit-in type, the manifold 1 and the branch block 2 are firmly assembled by the fixing bracket 6, and the state is further stabilized by the holding fitting 7.

Furthermore, the fixing bracket 6 is formed with support parts 62 and 63 extending in the upper and lower directions from the planar fixing part 61 in a perpendicular direction. In such a fixing bracket 6, the fixing part 61 and the supporting parts 62, 63 are cut from a single metal plate, and the supporting parts 62, 63 are bent to extend in the orthogonal direction to increase the bending rigidity in the longitudinal direction. It is bent into an L-shape. The fixing bracket 6 has supporting parts 62 and 63 (not shown) fixed inside the machine tool so as to support the manifold 1 and the branch block 2.

Therefore, in the hose piping structure of this embodiment, after the block joint 5 is fixed to the manifold 1 using a wrench, the branch block 2 to which the hoses 3 and 4 are connected in advance can be fitted into the block joint 5. Improves workability in narrow spaces such as inside machine tools. Moreover, the fitting of the branch block 2 into the block joint 5 does not require rotation as in the conventional case, so that the hoses 3 and 4 can be routed in the correct direction. Furthermore, since the manifold 1 side of the block joint 5 has a threaded portion 5A, it is possible to handle coolant mixed with chips, and the hose piping structure is suitable for machine tools. The structure using the fixing bracket 6 and the holding fitting 7 is also excellent as a hose piping structure for a machine tool where vibrations occur.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit thereof.
For example, in the embodiment described above, the hose piping structure in a fluid circuit in a machine tool in which the base block is the manifold 1 has been described as an example, but other fluid circuits may be used.
Further, it is preferable that the fixed bracket 6 includes support parts 62 and 63, but this is not necessarily necessary for piping at a location that is not subject to vibration.

1...Manifold 2...Branch block 3, 4...Hose 5...Block joint 5A...Threaded part 5B...Fitting part 6...Fixing bracket 7...Holding metal fitting 16...Output port 21...Input port 23, 24...Output port 25, 26... Hose joint 51...male thread 52...O ring 53...flat part

Claims (3)

a base block having a female threaded base side connection port;
a branching block in which an input side connection port for the base side connection port is formed, and two or more hose connection ports communicating with the input side connection port via two or more branch flow paths;
A male screw part is formed at one end of the cylindrical member to be screwed into the base side connection port, and a fitting part is formed at the other end to be fitted into the input side connection port, so that the base block and the branch block are connected to each other. A block joint that connects the flow path,
a fixing bracket that fixes the base block and the branch block connected by the block joint;
A hose piping structure having
The fixing bracket is arranged to fix the hose connection port side of the branch block together with the base block, and the hose piping structure is provided with a holding fitting to fix the branch block to the fixing bracket. The hose piping structure according to claim 1, wherein the female thread formed at the base side connection port of the base block and the male thread portion formed at the block joint are tapered threads. 3. The hose piping structure according to claim 1, wherein the fitting portion of the block joint has a cylindrical outer peripheral surface formed with a flat surface for rotation transmission and an annular groove for attaching an O-ring.

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