JPH0645991B2 - A device that trims the assembled Venetian blinds to a specified length. - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention provides a device for trimming both ends of an assembled Venetian blind. The Venetian blind has an upper rail, a lower rail, and an armor plate supported at both ends by a cross member of a ladder-shaped tape fixed to the upper and lower rails. A cord fixed to the lower rail and passing through a hole in the armor plate is hung on a pulley of the upper rail. By pulling up the cords, the armor plates will be collected as the lower rails are pulled up by the upper rails.

Background of the Invention Benetti Amblinds are currently in volume production to supply those with standard width windows. For those who need Venetian blinds for windows that are not of standard width, a special order made by assembling ladder tape and cord with upper and lower rails and armor plates made to the correct length. Must be made. This hinders sales of non-standard-width Benetti Amblinds at retail stores. In commerce, Venetian blinds are said to have a width (distance between sides) and a droop length (vertical distance). For convenience, in the present specification, the distance between the side portions of the Venetian blind is hereinafter referred to as the length thereof.

The present invention was made to enable a retail store having a number of pre-assembled Venetian blinds of various lengths to trim unwanted lengths from the blinds upon customer request. . The possible range is 150 mm between blinds for blinds with cord pulleys and ladder tapes located no closer than 150 mm from the ends of the blinds. If a maximum of 150 mm is cut from the blind, i.e. 75 mm from both ends of the blind, there is still an acceptable distance of 75 mm between the ends of the blind and the rudder tape.

DISCLOSURE OF THE INVENTION Broadly speaking, the present invention is directed to an assembled stretched Venetian blind blind armor having an upper rail and a lower rail supported by ladder tape on an armor board supported in the ladder tape. Forming a length trimming device for use with the upper rail support;
An upper rail clamp device on the upper rail support; a bearing device at each end of the upper rail support; two vertical posts respectively engaged in the bearing device; 1 drive and; two trimming units, each trimming unit engaged with a carriage lifting device, a blade carriage, a rest position on the blade carriage and a blind armor plate mounted on the device and a cutting relationship A pair of relatively movable armor plate trimming blades mounted horizontally movable to and from an operating position; a device for moving the blade pair between a rest position and an operating position, and the blades relative to each other. An armor plate trimming device with a moving device; a vertical track and associated blur for each blade carriage A carriage support including a device for moving the carriage along a vertical track; each including a horizontal track, such that the upper and lower ends of the carriage support are respectively moved to these tracks by a carriage support moving device. Upper and lower horizontal guides engaged; first
Choice of drive device, device for moving blade pair between rest position and operating position, device for moving blades relative to each other, device for moving blade carriage in vertical track, and carriage support device in track in horizontal guide And a control device for operating the same.

<Embodiment> Hereinafter, a presently preferred embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the device has a back plate 2, side plates 3 and 4 (a part of which is cut away to facilitate the description of the device), a base member 5, and a work table 6.
Upper and lower horizontal guides 7 and 8 including tracks 9 and 10, respectively, are fixed to the back plate 2.

Two vertical carry members 11 and 12 are attached to the guides 7 and 8 at both ends. At the upper ends of the support members 11 and 12 there is a drive unit 14 each having an accessory drive wheel 13 drivingly engaged with the T-shaped track 9. At the lower ends of members 11 and 12 are non-drive support wheels (not shown) engaged in T-shaped track 10. The support members 11 and 12 are channel-shaped, with the legs of the channels bent inwardly as shown at 15 to form a track 16. Inside each of the support members 11 and 12, there is a threaded feed screw 17, which is supported at the lower end of the support members 11 and 12 by a bearing device (not shown) and at the upper end of the screw 17
Is connected to a bidirectional rotary motor 19 fixed to the end plates 18 of the members 11 and 12.

There is a threaded nut 20 on each screw 17,
The arms 21 projecting horizontally from the respective support members 1
It has passed through the tracks 16 of 1 and 12 and is guided by the tracks so that the nut 20 moves up and down when the screw 17 is rotated by the electric motor 19. Blade carriage 2
2 is fixed to each arm 21 and the blade structure is attached to each blade carriage. The three operating states of the blade structure are shown in FIGS. It can be seen from FIG. 3 that the blade carriage 22 has a guide path 23 and a support surface 24. The blade holder 25 has a vertical lug 26 which engages the guideway 23 and rests on the support surface 24. A stop bar 27 on the blade holder 25 slides in a lug 28 on the blade carriage 22 and there is a collar 29 on the bar 27. The pillar portion 31 of the blade holder 25
There is a blade 30 fixed to. The post portion 31 is an upright portion of the base in which a blade bar 32 is slidably mounted vertically. The blade 30 is provided at the upper end of the pillar 31.
Is fixed and the blades 33 on top of the blade bar 32 are associated with the blades 30 to form a pair of cutters for cutting off the edges of the blind armor plates. The blade bar 32 is elastically pushed into its base by its spring 32a to its lower stop position.

A cam bar 34 having a lug 35 at one end and a cam surface 36 at the other end is horizontally slidably mounted in the blade holder 25. The cam surface 36 is located adjacent to the cam roller 37 fixed to the blade bar 32. A groove 38 is provided in the cam bar 34, and a pin 38 a fixed to the blade holder 25 is engaged with the groove 38. There is a hydraulic piston cylinder assembly or electric solenoid assembly, generally indicated at 39, which engages the lug 35.

Referring now to FIG. 4, this is the first stage of operation of the trim blade. Note that pin 38a is at the right end of groove 38. The lugs 35 are pulled when the blade assembly is aligned with the armor plates and the hydraulic assembly is biased, as will be described later. The cam bar 34 is prevented from moving with respect to the blade holder 25 due to the firm engagement between the cam roller 37 and the cam surface 36 by the action of the spring 32a. As a result, the combination of blade holder 25 and cam bar 34 moves to the right until collar 29 abuts lug 28. This moves the pair of blades behind the armor plate to be cut into the open position between the blades 30 and 33.

When the lug 35 is subsequently pulled, the lug 28 and the collar 29
Since the blade holder cannot move any more due to the contact of the above, the cam bar 34 moves with respect to the blade holder 25. When the cam bar 34 moves, the cam surface 36 is moved by the cam roller 37.
The arrangement shown in FIG. 5 has been applied to push the blade bar 32 up under. The blade 33 moves past the blade 30 so that the blind armor plate is trimmed. The distance traveled by the cam bar 34, and thus the upward movement of the blade bar 33, is controlled by the contact between the pin 38a and the left end of the groove 38.

To return the respective parts to the state shown in FIG.
It is possible by the action of the hydraulic unit 39 which is performing the pressing in combination with the action of a. One blade carriage has an associated armor plate detector which controls the lowering movement of the blade carriage to accurately align the trim blade with the armor plate to be trimmed. This will be explained later when the work order of the apparatus is explained.

There are two vertical cylindrical posts 40 fixed to the base member 5 at the lower end and at the upper end to a flange 41 bent inwardly of the side walls 3 and 4. The upper rail support 42 having the upper rail clamp device 42a is provided with a bush 44 slidably engaged with the post 40. The upper rail support 42 is fixed to a bush 44, and a shaft 47 that can be driven by an upper sprocket 45 and an electric motor 48.
The endless chain 43 hung on the lower sprocket 46 attached to the upper and lower parts can be moved up and down to fit blinds having various hanging lengths.

In the operating procedure, the electric motor 48 is biased through the control panel 51 as necessary to raise and lower the upper rail so that the blind to be trimmed is suspended from the upper rail support in a suspended state. . Blind upper rail 5
0 is then clamped to the upper rail support 42 by a clamp 42a such that the upper rail center is between the members 11 and 12, but for this purpose the upper rail support 42
Has a ruler shown at 49.

The drive unit 14 is then biased via the control panel 51 so that the position of the members 11 and 12 is correct with respect to the armor plate, with the blade assembly at the correct distance from the edge of the blind armor plate. Try to give the finished length. The electric motor 19 is then biased through the control panel 51 to move the blade carriage to a position where the blade structure is aligned with the armor plate where the trimming process begins.

The machine is now in the automatic armor plate trimming stage, but prior to its start, the lower rail 52 of the blind is secured by springs 53 or the like. In the automatic armor plate trim operation,
This process is instructed from the control panel 51, which is as follows. The motor 19 synchronously lowers the blade carriage until the armor plate detector turns off the motor 19.

Although there are various types of armor plate detectors, one of the presently preferred ones is described below. The preferred detector operates on the basis of two light beams. Reference is now made to Figures 6-8. FIG. 6 shows a side cross section of the two armor plates S1 and S2 of the blind and the lower rail 52. There is a light beam housing fixed to each of the blade carriages 22. Each light beam housing has a first sensor system having an emitter A1 and a receiver A2 and a second sensor B having an emitter and a receiver. The distance between the light beams emitted from A1 and B is
These do not hit both adjacent blind armor plates.

In FIG. 6, A1 and A2 are on and B is off. When the control system is energized in this state, the electric motor 19 starts driving and the blade carriage rises. When the state shown in FIG. 7 is entered, that is, A1-A2 is cut off (light beam is turned off), and B is also turned off, the electric motor 19 is stopped. At this time, the vertical position of the blade housing 22 is a position where the cutting blades 30-33 are advanced and the armor plate S1 is positioned between the blades 30-33 to be ready for trimming. When the electric motor 19 is stopped, the sequence controller in the control panel urges the hydraulic structure 39 to move the cam bar 34 and the blade holder 25 forward to perform the flat plate trim operation as described above, and then to move the blade holder 25. Move on to the next operation of returning to the rest position.

When the blade holder 25 returns to the rest position, the next operation in the process begins, which energizes the motor 19 and raises the blade carriage so that the detector light beam connects between A1 and A2. The ascent continues until the light beam from A1 to A2 is blocked again. The blade carriage is now aligned with the armor plate S2 and the above steps are repeated. Note that neither detector will be on during the blade carriage lift.

The foregoing is subsequently repeated until all armor plates have been trimmed. When the last armor plate is trimmed and the blade carriage is raised to the position shown in FIG. 8, the detectors A1-A2 are turned on due to the reflection of the upper rail 50 of the blind, and so is B. In this state, all the operations are automatically stopped, or if desired, the blade carriage is lowered until it returns to the position shown in FIG.
You can also start the bias of 9. In both cases this is the end of the process and the controller is switched off.

After trimming the armor plate of the blinds, the blinds can be placed on the workbench 6 and the ends of the upper and lower rails can be introduced into a trimming device such as 54 to trim the upper and lower rails. The trimming device 54 has sockets 57 and 58 of the same shape as the upper and lower rails of the blind. The length to be cut is determined by the machine operator and then the guillotine blade is lifted by the piston cylinder assembly 56 and the material is cut from its ends with the upper and lower rails held firmly in sockets 57 and 58.

A properly programmed sequence controller also drives unit 1 when the required length dimension of the blind is keyed in the information bank forming part of the control unit.
It is also possible to urge 4 to move the support members 11 and 12 to predetermined positions on the guides 7 and 8. The raising of the upper rail 50 of the blind can likewise be achieved automatically by the information input into the information bank.

[Brief description of drawings]

1 is a perspective view of the device of the present invention, FIG. 2 is a partial view showing the engagement between a blade carriage support and its support guide device, and FIG. 3 is a blade carriage and blade assembly in a stationary state. Figure 4 is a cutaway perspective view of Figure 4, a view similar to Figure 3 showing the blade assembly in the working position and Figure 5 similar to Figure 4 showing the blade assembly during the cutting operation. FIG. 6 is a schematic diagram showing a first operating state of the armor plate detector, FIG. 7 is a diagram similar to FIG. 6 showing the armor plate detector in a detecting state, and FIG. Figure 7 is a view similar to Figure 6 showing the armor plate detector in the lower rail detection state. In the figure, 6 is a work table, 7 and 8 are horizontal guides, 9 and 10 are tracks, 11 and 12 are carriage support members, 14 is a drive unit, 16 is a track, 17 is a feed screw, 19 is a bidirectional rotary electric motor, 20 is a threaded nut, 21 is an arm, 22 is a blade carriage, 25 is a blade holder, 26 is a vertical lug, 27 is a stop bar, 28 is a lug, 29 is a collar, 30, 33 are blades, 32a
Is a spring, 34 is a cam bar, 35 is a lug, 36 is a cam surface, 37 is a cam roller, 38 is a groove, 38a is a pin, 39 is a hydraulic structure, 40 is a vertical cylindrical post, 41 is a flange, 42 is an upper rail support,
42a is a clamp, 43 is an endless chain, 48 is an electric motor, and 51 is a control panel.

Claims (6)

[Claims] 1. A length trimming device for an assembled stretched Benetti amblind armor plate having an upper rail, an armor plate supported in a ladder tape, and a lower rail connected by the ladder tape. Is an upper rail support; an upper rail clamp device on the upper rail support; a bearing device at each end of the upper rail support; two vertical posts respectively engaged in the bearing device; an upper part on the post A first drive device for moving the rail support up and down; two trimming units, each trimming unit engaging a blade carriage with a carriage raising and lowering device, and a blind mounted on the blade carriage, in a rest position and on the device A pair of relative movements mounted horizontally movable between the armor plate and the operating position in a cutting relationship. A possible armor plate trimming blade; an armor plate trimming device consisting of a device for moving a pair of blades between a rest position and an operating position, and a device for moving the blades relative to each other; a vertical track for each blade carriage. And a carriage support including a device for moving the blade carriage attached thereto along a vertical track; each including a horizontal track, and the upper and lower ends of the carriage support being respectively attached to these tracks by a carriage support moving device. Upper and lower horizontal guides engaged to move along; a first drive device, a device for moving the blade pair between a rest position and an operating position, a device for relatively moving the blades, a vertical track for the blade carriage. And a control device for selectively operating the carriage moving device in the track in the horizontal guide Assembled stretched Bene' Chiang blind length trim arrangement of armor plate. 2. A device for moving a blade carriage in a vertical track has a screw member engaged in a threaded socket in the blade carriage and an electric motor for rotating the screw member, and for a blade pair in a rest position. Claim 1 wherein the motor can be energized according to an operating program in the controller, and the motor is de-energized according to a detector that detects the alignment of the blade pair with the armor plate to be trimmed. A length trimming device for an armor plate of the assembled expanded Benetti unblind according to paragraph. 3. A blade holder mounted on a blade carriage so that each blade assembly can move horizontally within a predetermined limit, and a horizontal movement relative to the blade holder within a predetermined limit. A cam bar mounted in the blade holder, a stationary blade mounted on a post on the blade holder, a blade mounted on a bar that is vertically movable in the blade holder, a cam surface on the cam bar, and a cam surface. A cam engaging member on the blade bar in engagement, a device for pushing the cam bar downward, an interconnect between the blade holder and the cam bar for limiting mutual movement between the blade holder and the cam bar, and a horizontal And a device for exerting a force on the cam bar in a direction, the length of the armor plate of the assembled stretched Venetian blinds according to claim 1. Apparatus. 4. The assembled trimmed venetian unblind armor plate length trim device of claim 3 wherein the cam bar force applying device is a hydraulic assembly including a piston and a cylinder. 5. An apparatus for moving an upper rail up and down comprises two endless chains suspended on upper and lower sprockets, a connecting body between the chain and each bearing device, and a chain drive unit. A pre-assembled stretched Benetti Amblind armor plate length trim device. 6. A device for moving a blade carriage along a track within a carriage support includes a threaded rod rotated by a reversible electric motor, the threaded rod engaging a threaded hole in the blade carriage. A preassembled stretched Venetian unblinded armor plate length trim device as claimed in claim 1.