JPH0622600U - Ejector unit - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an ejector unit that is inexpensive and easy to replace. [Structure] The pipe joints 3a, 3b, 3c are attached to the respective openings of the substantially T-shaped channel 2 provided in the unit main body 1, and the nozzles 4 and the diffuser 5 are attached to the pipe joints 3a, 3b facing each other, and the other pipe joints 3a, 3b, 3c. The tubes 6 are detachably attached to the joints 1c. [Effect] Each unit can be individually replaced according to the work without replacing the unit main body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ejector unit that sucks a work.

[0002]

[Prior art]

 A unit having a substantially T-shaped flow passage, a nozzle portion for supplying compressed air to the flow passage, a diffuser portion provided in the flow passage on an extension line thereof, and a tube connecting portion in a direction intersecting with these as a unit. An ejector, which is integrally formed and sucks a desired work by applying a vacuum pressure to the tube connecting portion by the compressed air flowing from the nozzle portion to the diffuser portion, has been already known without particular exemplification. The work sucked by the above-mentioned known ejector requires a large suction flow rate due to the unevenness of the surface, air permeates like paper, and the surface is slippery like a metal plate. Some ejectors require a relatively large vacuum pressure, but some require a relatively high vacuum pressure, while others such as lint and dust require little vacuum pressure. However, those having various suction flow rates and vacuum pressures are required depending on the workpiece to be sucked.

Therefore, conventionally, the ejector has been experimentally operated to determine the nozzle diameter, vacuum pressure, etc. required for the workpiece to be sucked. When the desired performance cannot be obtained by this, the unit is used as a unit. The entire ejector that has been formed is being replaced. However, replacing the entire ejector requires preparing multiple types of ejectors with different flow path dimensions of the nozzle and diffuser parts, which not only increases the number of ejectors and makes them expensive, but also requires replacement. The work is troublesome.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to provide an ejector unit that is inexpensive and easy to replace.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, an ejector unit of the present invention comprises a unit body having a substantially T-shaped flow path, pipe fittings attached to respective openings of the flow path, and a pair of pipes facing each other. A nozzle and diffuser detachably attached to the joint, and a tube detachably attached to the pipe joint in the direction intersecting with the nozzle and diffuser are provided, and the work is sucked by the vacuum pressure generated in the tube by the pressure fluid flowing from the nozzle to the diffuser. It is characterized by that.

[0006]

[Action]

 Appropriate nozzles, diffusers, and tubes are connected to the pipe fittings attached to each opening of the T-shaped flow path of the unit body to operate the unit, and the desired suction performance required for the work cannot be obtained. At this time, by exchanging one or more of these, it is possible to obtain an ejector unit having a suction performance according to the work. In this case, each of these parts can be replaced only by the pipe joint provided at the opening of the flow path, and it is not necessary to replace the entire ejector unit. It is possible to obtain an ejector unit having a suction performance according to the work. Therefore, the number of parts required is reduced and the unit as a whole can be made inexpensive, and the pipe joint facilitates replacement work.

[0007]

【Example】

 FIG. 1 shows a first embodiment of the present invention, This ejector unit A T-shaped unit body 1 made of a synthetic resin having a substantially T-shaped flow path 2; Pipe fittings 3a attached to the respective openings of the flow path 2 respectively, 3b, 3c, A nozzle 4 and a diffuser 5 detachably attached to the pipe joints 3a and 3b facing each other, A tube 6 detachably attached to the pipe joint 3c in the direction intersecting with these, These pipe fittings 3a, 3b, 3c is When the nozzle part 4 etc. is inserted through the release bush 8,  The seal member 9 hermetically seals the outer peripheral surface thereof, and the metal chuck 10,  ..These lock these, When pressing the release bush 8, Chuck 10, ..Can be removed by releasing the lock by It is configured as a so-called one-touch fitting.  The nozzle 4 is A compressed air flow path 12 formed in the axial direction, Inlet pipe joint 13 connected to a compressed air tube (not shown) attached to the base end opening of the flow path 12, And a variable throttle 14 in the flow path 12, The tip is removably inserted into the pipe joint 1a. Also, The diffuser 5 A parallel portion 16 having a diameter larger than that of the flow path 12, An outlet pipe joint 17 at the tip of the flat portion 16, The base end is detachably attached to the pipe joint 1b, For the pipe joint 3c, The tube 6 communicating with the suction pad 19 is removably inserted. And The pipe joints 13 and 17 are also It is configured as a so-called one-touch fitting.

The nozzle 4 and the diffuser 5 may be formed of a tube of synthetic resin such as urethane resin or polyamide resin. Further, a plurality of unit main bodies 1 can be arranged side by side to form a multiple-type ejector unit. Further, a silencer, a valve, a check valve, a speed controller, a sensor such as a pressure gauge, and a filter (all not shown) can be attached to the pipe joints 13 and 17, if necessary.

In the first embodiment, when compressed air is supplied from the tube inserted into the inlet pipe joint 13 of the nozzle 4, the air flowing through the flow passage 12 to the parallel portion 16 of the diffuser 5 causes the unit body 1 to flow. Negative pressure is generated in the flow path 2, and the suction pad 18 connected to the tube 6 sucks the work 19 by this. In this case, the flow rate of the compressed air flowing through the nozzle 4 can be adjusted by the variable throttle 14, and the opening amount of the variable throttle 14 can be fixed to the nut 15. In the first embodiment described above, the required suction flow rate, vacuum pressure, etc. differ depending on the nature of the workpiece 19 to be sucked, but by using the nozzle 4, diffuser 5, and tube 6 as appropriate, the workpiece 19 It is possible to obtain an ejector having a desired performance depending on the properties of When the work 19 is dust or the like, it is needless to say that the suction pad 18 need not be provided. The nozzle 4, the diffuser 5 and the tube 6 can be replaced by the pipe joints 3a, 3b provided on the unit body 1. Easy with 3c. Further, it is sufficient to prepare a plurality of types of nozzles 4, diffusers 5 and tubes 6 having the same insertion diameter into each pipe joint but different inner diameters of the flow path 12, the parallel portion 16 and the tube 6, and the unit main body 1 is common. The ejector unit can be made inexpensive because the number of required parts is reduced.

FIG. 2 shows a second embodiment of the present invention. In a nozzle 21 of the second embodiment, a solenoid valve 23 is attached in a flow path 22. The solenoid valve 23 is a well-known three-port solenoid valve that switches the outlet port to an inlet port and an exhaust port (both ports are not shown) to communicate with each other by exciting and releasing the solenoid. The port and the outlet port communicate with the upstream side and the downstream side of the flow path 22, respectively, and the discharge port is open to the outside. Since the other structure and operation of the second embodiment are the same as those of the first embodiment, the same reference numerals are given to the main parts of the drawing, and the detailed description will be omitted.

[0011]

[Effect of device]

 In the ejector unit of the present invention, a pipe joint is provided at each opening of the substantially T-shaped flow path of the unit body, and a nozzle, a diffuser, and a tube are detachably attached to these pipe joints, respectively. By attaching the nozzle, diffuser, and tube to the unit body, it is possible to obtain an ejector unit that has a suction flow rate, vacuum pressure, etc. that suits the characteristics of the work piece, so it is easy to replace them and the entire unit can be replaced. It can be cheap.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is a sectional view of a second embodiment.

[Explanation of symbols]

 1 unit main body 2 flow paths 3a, 3b, 3c pipe joint 4 nozzle 5 diffuser 6 tube

Claims (1)

[Scope of utility model registration request] 1. A unit body having a substantially T-shaped flow passage, and pipe fittings attached to respective openings of the flow passage,
A nozzle and a diffuser detachably attached to a pair of pipe joints facing each other, and a tube detachably attached to the pipe joint in a direction intersecting with the pair, and a tube is detachably attached to the pipe by a pressure fluid flowing from the nozzle to the diffuser. An ejector unit that sucks a workpiece with vacuum pressure.