KR20050022082A - Fuel return hose assembly machine - Google Patents

Abstract

PURPOSE: An assembling device of a fuel return hose is provided to increase the productivity by automatically assembling the fuel return hose, to improve the quality of the product by decreasing the failure rate, and to manage the assembling process efficiently by testing and assembling the fuel return hose at the same time. CONSTITUTION: A fuel return hose assembling device comprises at least four connector jigs(10) and hose jigs(11) arranged in a line on a table(110) of a frame(100) to set a connector and a hose, a jig plate(12) supporting the jig and combining the connector with the hose on the jig by axially moving, at least four rows of guide shafts(13) guiding movement of the jig plate, an insert cylinder(14) arranged longitudinally and axially in the lower part of the table and connected to the first plate to transmit power, clamping connector jigs(15), hose jigs(16) and cylinders(17a,17b) arranged in the upper parts of the jigs to hold the connectors and the hoses in assembling the connectors and the hoses, and a control panel controlling the components and supplying pneumatic pressure.

Description

Fuel return hose assembly machine

The present invention relates to equipment for assembling a fuel return hose applied to a fuel system of a vehicle engine.

In particular, by adopting the automation concept, many connectors and hoses can be assembled in the form of assembly, and the work time per assembly can be reduced, thereby improving efficiency in terms of workability and productivity, and reducing defects due to all automation. The present invention relates to a fuel return hose assembly machine capable of increasing the quality of the product and also performing the quality inspection of the product in accordance with various test equipments for the finished product.

In general, the fuel pumped from the fuel tank in the fuel system of the vehicle is filtered in the filter, the pressure is adjusted in the pressure regulator, then sent to the injector is injected, the excess fuel is returned to the fuel tank through the fuel return hose.

The means for fuel return can be divided into hose type and pipe type.In case of the specification connected to each injector, the hose is applied a lot, and in the case of the specification using the delivery pipe, Mostly applicable.

In recent years, a lot of fuel return means of hoses having an excellent effect in response has been applied.

Existing fuel return hoses are connected to each injector in a one-to-one speed, joined together, and then mounted to extend to the fuel tank side.

The fuel return hose is composed of a plurality of connectors fastened to the injector side, a hose connecting each connector, a check valve for preventing backflow of the fuel, and the like.

The assembly work of the existing fuel return hose has been performed by manually inserting the hose into the connector of the connector and then crimping the insertion part with a separate connection member. This was inconvenient and time-consuming, and inefficient in terms of workability and productivity.

In addition, due to the adoption and manual labor of the connection member, it is difficult to ensure the airtightness of the connector and the connection portion of the hose, there was a problem that the defective rate for the product is high.

Therefore, the present invention has been devised in view of such a point, and when the assembly of the fuel return hose, the existing manual concept is excluded and an automation concept can be introduced to achieve a drastic improvement in workability or productivity. To provide a fuel return hose assembly machine that can reduce the defective rate and obtain a high quality product, and also to perform the performance test on the product at the same time, thereby improving the efficiency of the overall process related to the assembly of the fuel return hose. There is this.

The present invention for achieving the above object is arranged in a row side by side while maintaining a constant pitch on the table of the frame and at least four connector jig and hose jig for setting the connector and the hose, and supporting each jig Each jig plate one-to-one to the jig and movable in the axial direction for coupling of the connectors and hoses on the jig, and at least four rows of side-by-side guide shafts for guiding when the jig plate is moved, and axially elongated at the bottom of the table. Insert cylinder for braking power connected to the first plate, and each clamping connector jig and clamping hose jig for each connector and hose that are arranged on the upper part of the jig and when assembling the connector and hose, and each clamping Control of the cylinder and the operating element and providing air pressure It characterized in that it comprises a control panel for.

Also, a stopper cylinder disposed at 90 ° with respect to the axial direction at one end on the table, and a rack directly connected to the axis thereof and a plurality of stoppers disposed side by side along the axial direction at one side of each jig and restraining the position of the plate. It is characterized in that it comprises a rack and an electrically movable shaft through one side pinion, the position setting means for setting the exact position of the plate by turning or restoring the stopper by the rotation of the shaft, characterized in that it further comprises do.

The apparatus may further include a test unit connected to a hose positioned at one end of the table in parallel with the jig at one end of the table in order to perform a leak test of the product by checking pressure and the like with the air injection. It features.

In addition, it characterized in that it further comprises a marking unit for marking on the hose while being disposed in the 90 ° direction with respect to the jig at one end of the table to perform marking on the finished product.

In addition, each jig plate is fixed on each plate is characterized in that each has a block for maintaining the spacing connected to each other by a slidable pin to transfer the traction between the neighboring plates.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 4, the control panel 120 for controlling the operating elements such as all cylinders, etc. are arranged on the upper part of the frame 100, in the middle of the composition to the workspace where the actual hose connection work is performed In the lower portion, an air tank / valve 130 that is connected to the pneumatic unit 140 side for generating air pressure provided to a cylinder or the like is disposed.

Since the frame 100 is free to move by at least four auto casters, the frame 100 is not restricted by the working space.

In addition, a lamp is installed above the control panel 120, and a pneumatic unit 140 connected to each cylinder side for distributing air pressure according to predetermined control is installed on the left side when viewed from the front view. On the right side, a safety sensor 150 and a warning light for safety during work are installed.

In addition, the frame 100 is provided with a test unit 23 for checking the pressure in the hose and the state of the check valve and the like through the operation of the air injection, etc. to perform a leak test of the product, the air injection at this time The test cylinder 32 to be carried out is installed so that the air inlet can be positioned immediately behind the hose seated in the final jig plate 12 while being arranged side by side on the line on which the jig is arranged.

The test unit 23 is a part for performing various inspections with a digital pressure gauge and a pressure sensor by supplying air to the assembled product, and includes a digital pressure gauge, a pressure sensor, a booster valve, etc. in addition to the test cylinder 32. Leak test, check valve reverse check, check valve open check, etc.

In addition, the frame 100 is installed with a marking unit 24 for performing marking on the finished product.

This marking unit 24 comprises a marking cylinder 30 which is arranged in a 90 ° direction with respect to the jig at one end of the table.

For practical assembly of the fuel return hose, at least four connector jigs 10 are provided on the table 110 of the frame 100 to maintain a constant pitch interval along the axial direction (left and right horizontal directions when viewed from the front and top views). And hose jig 11 are arranged side by side alternately one by one.

In one embodiment of the present invention, the jig for the connector and the hose is composed of five by adopting a method of integrally assembling the check valve jig (160).

These jigs are supported by each jig plate 12 and can be moved together as the plate moves.

The connector jig 10 and the hose jig 11 are provided with a seating groove for accommodating a part of the connector and the hose, and the connector (including the valve) and the hose placed therein are clamped to the upper part. It can be fixed by the jig 15 and the clamping hose jig 16.

Each jig plate 12 includes two linear blocks 28 on both sides of the bottom surface, and is fitted on four rows of guide shafts 13 arranged side by side along the axial direction on the table 110 in the axial direction. You will be guided when you move.

The insert cylinder 14 is provided as a means for moving the jig and the plate.

The insert cylinder 14 is first installed at the bottom of the table 110 in the axial direction and extends from the rod by using a bar and an assembly connection block 29 for assembly (the leftmost one in the front view and the top view). Connected with the jig plate 12, all the jig plate 12 can be moved in conjunction with the first jig plate 12 is pulled or pushed by the cylinder forward and backward operation.

To this end, each jig plate 12 is provided with a "c" shaped gap maintaining block 26 on one side of the jig, and each gap maintaining block 26 is slidable between the blocks and at the same time interlocked with each other. It is connected by a pin 25 that can perform.

Accordingly, when each jig plate 12 attached by the forward operation of the insert cylinder 14 falls after assembly of the connector and the hose, each jig plate 12 is sequentially connected by the first jig plate 12. Finally, the interval holding blocks 26 are able to maintain a constant pitch interval by the locking action of the pin 25.

The exact setting of the pitch interval as described above can be achieved by in-situ setting means for selectively restraining the flow of each plate.

To this end, a stopper cylinder 18 is installed at one end of the table 110 (left side when viewed in front view and plan view) in a 90 ° direction with respect to the axial direction, and side by side in the axial direction at one side of each jig. The shaft 22 is installed.

At this time, the shaft 22 is supported at both ends in a rotatable structure by the shaft support bracket 31 on the table 110.

A rack 19 is coupled to the rod of the stopper cylinder 18, and a pinion 25 engaged with the rack 19 is mounted at one end of the shaft 22, so that when the stopper cylinder 18 is operated, The pinion transmission allows the shaft 22 to be rotated.

A plurality of stoppers 20 are integrally mounted to the shaft 22 so that one side of the jig plate 12 can be restrained or released while being folded or restored with rotation of the shaft.

In one embodiment of the present invention, five stoppers 20 are provided to restrain the jig plate 12 on which the connector jig 10 and the check valve jig 160 are disposed.

As such, each jig plate 12 is limited in its movement by the stopper 20, so that it is possible to maintain an accurate setting position between the plates.

The clamping connector jig 15 and the clamping hose jig 16 and respective clamping cylinders 17a and 17b are provided as a means for holding the connector and the hose in assembling the connector and the hose.

The clamping cylinders 17a and 17b are installed with the rod downwards on the cylinder support bracket 27 which is erected at a constant height on the jig plate 12, and the rod is for pressing the upper side of the connector and the hose. Each clamping connector jig 15 and clamping hose jig 16 are mounted.

Accordingly, when the clamping cylinders 17a and 17b are operated, the jig at the end of the rod is lowered and coalesced with the lower jig to fix the connector and the hose.

Of the above jig, the jig for clamping the hose can hold the hose firmly by using the seating groove which can accommodate about 1/2 of the cross section of the hose, and the jig for clamping the connector removes a part of the connector body. While receiving it will have a separate groove that can accommodate the connector (providing parts connected to the injector) protruding thereon.

In the case of a cylinder having a clamping hose jig 16 for clamping a long hose among the above clamping cylinders 17a and 17b, the lifting and lowering operation is more precisely provided with at least one guide bar. It is desirable to be able to.

Therefore, looking at the operation of the fuel return hose assembly according to the invention configured as described above are as follows.

As shown in Fig. 6, in the initial state of the fuel return hose assembly machine, the clamping cylinders 17a, 17b, the stopper cylinder 18, the marking cylinder 30 and the test cylinder 32 remain in the reverse state, The insert cylinder 14 remains forward.

In the following, all operations other than manual work by the operator are performed by the control of the control panel according to the switch operation.

First, when the stopper cylinder 18 moves forward, the shaft 22 rotates by the rack and pinion transmission so that the stopper 20 holds each jig plate 12, so that the clamping connector jig 15 and the clamping hose jig ( 16) can be maintained at a constant pitch interval.

Next, load a hose, connector and check valve on each jig.

This is done manually by the operator.

When the loading of the hose, connector and check valve is complete (Fig. 5a), the switch on the front of the equipment is operated by "on" to start the equipment.

First, by stopping the stopper 20 by moving the stopper cylinder 18 forward, the jig and the jig plate 12 can be restrained, and the clamping cylinder 17b then moves forward (down) and the hose The hose is clamped between the jig 11 and the clamping hose jig 16 (FIG. 5B).

The insert cylinder 14 then retracts and pulls all the jig plates 12 in sequence starting with the initial jig plate 12, thereby providing a connector jig 10 and a hose jig 11 on each jig plate 12. Connectors, hoses, check valves can be combined (Fig. 5c).

After coupling the connector, hose, 첵 valve as described above, the clamping cylinder (17a) is lowered to close the connection with the upper injector while clamping the connector with the clamping connector jig (15) (Fig. 5d).

After a few seconds have elapsed, the test cylinder 32 of the test unit 23 is advanced to apply a predetermined pressure, and the leak test on the hose connection part, the reverse check valve check, and the connector / check valve open test are performed in this order. do.

After completing all the inspections, the marking cylinder 30 of the marking unit 24 is advanced to perform marking on the corresponding product, and the test cylinder 32 and the clamping cylinders 17a and 17b are reversed. , Unload the product.

Subsequently, the forward movement of the insert cylinder 14 and the stopper cylinder 18 are reversed to complete one cycle for assembling the fuel return hose.

The fuel return hose assembled after completing the above 1 cycle is shown in FIG. 7.

Reference numeral 170 denotes a connector, 180 a hose, 190 a check valve, and 200 an injector.

Here, the posture of the connector is showing the posture of the state used in the actual vehicle, and when assembled, the connection part with the injector is in an upright position.

As described above, the present invention provides an automated equipment that can automatically perform the assembly of the fuel return hose, which has the advantage of increasing first workability and productivity, and secondly, lowering the defective rate of the product to increase the product quality. Third, the assembly and performance test of the third product can be performed at the same time, so that the overall assembly process of the fuel return hose can be efficiently performed.

1 is a front view of a fuel return hose assembly according to the present invention

Figure 2 is a side view of the fuel return hose assembly according to the invention

3 is a plan view of a fuel return hose assembly machine according to the present invention;

Figure 4 is a partial perspective view of the fuel return hose assembly according to the invention

5a, 5b, 5c, and 5d are partial front views showing the operation of the fuel return hose assembly according to the present invention.

6 is a flowchart showing the operation of the fuel return hose assembly according to the present invention.

7 is a perspective view showing a fuel return hose assembled through the fuel return hose assembly according to the present invention

<Explanation of symbols for main parts of drawing>

10: connector jig 11: hose jig

12: jig plate 13: guide shaft

14 Insert cylinder 15 Clamping connector jig

16: clamping hose jig 17a, 17b: clamping cylinder

18: stopper cylinder 19: rack

20: stopper 21: pinion

22: shaft 23: test unit

24: marking unit 25: pin

26: space maintenance block 27: cylinder support bracket

28: linear block 29: connection block for assembly

30: marking cylinder 31: shaft support bracket

32: test cylinder

100: frame 110: table

120: control panel 130: air tank / valve

140: pneumatic unit 150: safety sensor

160: Jig for check valve 170: Connector

180: hose 190: check valve

200: injector

Claims (5)

At least four connector jig 10 and hose jig 11 arranged in a row in a row in order to maintain a constant pitch on the table 110 of the frame 100; Each jig plate 12 one-to-one assigned to the jig to support each jig and axially movable for coupling of the connectors and hoses on the jig; An insert cylinder (14) connected to the first plate and braking power while being arranged in the axial direction at the bottom of the table and at least four rows of side-by-side guide shafts (13) for guiding the movement of the jig plate (12); The clamping connector jig 15 and the clamping hose jig 16 and the clamping cylinders 17a and 17b which are arranged on the upper part of the jig and hold the connector and the hose on the jig when assembling the connector and the hose. ; A control panel 120 for controlling the operating element and providing air pressure; Fuel return hose assembly comprising a. 2. The stopper cylinder (18) arranged at one end on the table in an axial direction with respect to the axial direction, and the rack (19) directly connected to the shaft thereof and one side of each jig, arranged side by side along the axial direction. And a plurality of stoppers 20 for constraining the position of the plate and consisting of the rack 19 and the shaft 22 that are electrically movable through one side pinion 21, so that the stopper 20 is rotated by the rotation of the shaft 22. And an exact position setting means for setting the exact position of the plate by flipping or restoring). The test unit according to claim 1, wherein the test unit is connected to a hose positioned at an end while in line with a jig at one end of the table to check a pressure and the like with air injection to perform a leak test of the product. A fuel return hose assembly, characterized in that it further comprises 23). The fuel return hose according to claim 1, further comprising a marking unit (24) for marking on the hose while being disposed at 90 ° with respect to the jig at one end of the table to perform marking on the finished product. Assembly machine. According to claim 1, wherein each jig plate 12 is fixed on each plate and connected to each other by a slidable pin (25) for each spacing block for transmitting a traction force between neighboring plates ( 26. A fuel return hose assembly machine comprising: a.