JPS6031147B2 - Seat clamp device - Google Patents

Description

Detailed Description of the Invention In a facsimile machine, when wrapping a sheet around the peripheral surface of a drum and clamping the front and rear ends of the sheet, this has conventionally been done using separate gripping claws and pressing members. The mechanism for opening and closing members at an opportune time is complex, and in particular, the pressing member that clamps the rear end of the sheet separates from the circumferential surface after the leading edge of the sheet is held in its mouth, stops rotating by one rotation, and then closes the seat. When located at the rear end, it requires a complicated movement in which it comes into pressure contact with the drum circumferential surface again and rotates, and the mechanism is complicated and is likely to cause failure.

An object of the present invention is to provide an apparatus that can clamp the front and rear ends of a sheet using a single pressing member.

The present invention will be explained below with reference to the illustrated embodiments.

Figure 1 shows the outline of a facsimile machine, with arrow 2
A drum 3 rotatable in the direction shown in FIG. 1 is supported by a main shaft 4 on both side plates of the apparatus 1, and a pressing member 6 clamps the front and rear ends of the sheet 7 with its green portions on both sides. The strainer member 8 presses against the circumferential surface of the drum during winding of the sheet 7 to strain the sheet, and serves as a cover 5 for covering the upper part of the drum 3.
is opened when the drum 3 is at rest, and the sheet 7 is attached to and removed from the drum 3. With the cover 5 closed, the drum 3 rotates in the direction of arrow 2, and the sheet 7 is scanned by the scanning head 9 during transmission and by the recording head 11 during reception. Reference numeral 12 indicates a scanning signal control device. A stopping mechanism for stopping the drum 3 at a fixed position is constituted by a heart cam 13 fixed to the main shaft 4 and a trochanter 14 pressed against the heart cam 13, and a friction section 15 is configured to press and slide on the circumferential surface of the drum during paper making. This allows the sheet end to be separated. In FIGS. 2 and 3, a chevron-shaped support section 21 is disposed in a long hole 3a bored along the generatrix of the drum 3, and a relatively thin pressing member 6 fixed on the top thereof is , are in pressure contact with step portions 3b and 3c provided along the long hole 3a.

As shown in FIG. 3, a two-arm member 22 is fixed to the leg portion of the support member 21, and the one arm portion 22a and the main shaft 4
The end portions of compressible springs 24 are respectively engaged with the fittings 23 fixed to the drum, and the pressing member 6 is brought into pressure contact with the circumferential surface of the drum. The driven part 25, which is provided with a cam 25a at its free end, is attached to a side plate (not shown) by means of a shaft 26.
A leaf spring 27 whose base is fixed to an immovable member is in pressure contact with the upper right side of the leaf spring 27. Information board 28
, 29 form a sheet insertion opening, a pair of support plates 31 to which the cover 5 is fixed are connected to both side plates by shafts 32, and a shaft 34 fixed to the support plates 32 is connected to the cover 5. 5 is in a position where it can press the upper surface of the leaf spring 27 when it is released.

A pair of support members 35 are pivotally attached to the shaft 32,
An ironing member 8 is rotatably attached to the end of one arm, and the ironing member 8 is moved around the drum by the elasticity of a torsion spring 36 whose one end is locked to the shaft 32 and the other end to the support member 35. It has a rotational habit of pressing against the surface. Each end of the support member 21 is slightly elongated in the circumferential direction of the drum 3, and is embedded in a step provided at the peripheral end of the drum, with a bent piece 21a formed on the outside thereof.
A pin 37 is fixed in the tank.

As shown in FIG. 7, the base of a locking member 38 is pivotally attached to the arm 35a of the support member 35 through a shaft 40', and a stopper 39 fixed to the support member 35 and the locking member The locking member 38 is in pressure contact with the stopper 39 due to the elasticity of the torsion spring 41 locked to each of the locking members 38 .
The pin 37 cooperates with a locking member 38 to release the squeezing member 8, as will be described later, and the pin 42 provided at the free end of the support member 35 It cooperates with the lower edge of the piece 21a to increase the straining effect. A support member 43 is further pivotally connected to the shaft 26 of the driven member 25, and a shaft 44 fixed to the free end of the support member 43 has a base portion of a 9E paper lever 45 having a friction member 15 fixed to the free end thereof. 45a is pivotally mounted.

The paper ejection lever 45 is moved clockwise in FIG. The friction member 15 is given a rotational habit, and by bringing the upper edge of the locking plate 46 into contact with the stopper 49, the friction member 15
is normally located at a distance from the drum circumference. drum 3
is held at a predetermined position shown in FIG. 3 by a stop mechanism (not shown), and when the cover 5 is opened in this state as shown in FIG. 4, the shaft 34 engages the driven member 25 via the leaf spring 27. Press to rotate the member 25 clockwise.

As a result, the one arm portion 22b of the two arm member 22 is attached to the cam green 25a.
As shown in FIG. 4, the supporting member 21 is
Rotate clockwise around the right end of the pressing part 6.
The - side edge of is open. The above-mentioned shaft 34 is connected to the support member 4
Press the short arm 43a of No. 3 to rotate the arm 43 counterclockwise. At this time, since the locking plate 46 comes off the stopper 49, the friction section 15 slides in the circumferential direction while being in pressure contact with the drum circumferential surface, and if the sheet 7 is already clamped to the drum circumferential surface, It functions to pull out the end portion from under the pressing member 6. As shown in FIG. 4, the lower green part of the locking plate 46 is fixed to the stationary member, and as a result, the friction member 15 rotates counterclockwise as it collides with the member 51. It is separated from the drum circumference again. Paper is fed to the drum 3 by inserting the leading end of the sheet 7 into the inside of the pressing member 6 as shown in FIG.

Incidentally, as shown in FIG. 3, the support member 35 of the squeezing section 8 is prevented from rotating by bringing its leg portion 35a into pressure contact with the stepped portion 27a of the push spring 27 (see FIG. 2). The squeezing member 8 is held at a retracted position away from the drum circumferential surface. When the cover 5 is opened, the shaft 3
4 releases the leaf spring 27 downward, the leg portion 35a separates from the stepped portion 27a of the leaf spring 27, the support member 35 rotates counterclockwise as shown in FIG. Press it against the surrounding surface. When the cover 5 is closed in this state, the driven part village 25 and the support member 43 return to rotation, the green part on one side of the pressing member 6 closes to clamp the tip of the sheet 7, and the friction member 15 also It is held in its original position as shown in the figure.

Next, when the drum 3 is rotated by operating a starter metal 0 (not shown), the sheet 7 is wrapped around the drum circumferential surface as shown in FIG. density. When the pressing member 8 is in pressure contact with the circumferential surface of the drum, the pin 42 of the support member 35
is located within the rotation path of the bent piece 21a of the support member 21. When the drum 3 rotates approximately once, the lower green part of the bent piece 21a rides on the pin 42 as shown in FIG.
As shown in FIG. 7, the support member 21 rotates counterclockwise around the green portion on the left side, and presses the pressing member 6 at the rear end of the sheet.
Open the side green part. When the pressing member 6 presses the rear end of the sheet 7, the sheet 7 between the squeezing member 8 and the pressing member 6
There is a drawback that the loosening of the sheet 7 causes the wrapping of the sheet 7 around the drum circumferential surface to become loose. However, as the bent piece 21a rides on the pin 42 and presses it downward, as shown in FIG. As a result, the above-mentioned inconvenience has been resolved. To close the pressing member 6, as shown in FIG.
This is done by crossing Qin and departing from this.

When the bent piece 21a is rotated a little more from this state, the pin 37 of the bent piece 21a comes into pressure contact with the free end of the locking part village 38, rotating it counterclockwise, as shown in FIG. As the pin 37 advances and bites into the notch of the locking part village 38, the locking part village 38 raises the support member 35, and the same part village 35 is moved to the ninth position.
Rotate clockwise as shown. As a result, as shown in FIG. 9, the leg portion 35a is once again engaged with the stepped portion of the leaf spring 27, and the support member 35 is held in its original position, and the squeezing member 8 is moved to a position retracted from the drum circumferential surface. Retained. When the pin 37 further rotates from the position shown in FIG.
1 returns to the original position shown in FIG. 1st
Figure 0 shows yet another embodiment of the present invention,
The pressing member 61 is normally buried at a position indicated by the imaginary line 61A, and the leg portion 61a of the pressing member 61 is moved by the cam portion 63 provided at the free end of the driven member 62 that follows the opening and closing of the lid 5 in the above embodiment. is specially highlighted. A pressing member 61 whose one side edge is engaged with a stopper 64 provided at both ends of the drum 3 rotates about this as shown in the figure. The protruding portion 61b provided at the other end of the pressing member 61 is connected to the stepped portion 66 of the holding member 66 whose base portion is pivotally connected to the drum 3 via a shaft 65.
It is locked and held by a. In this state, seat 7
is inserted and the lid 5 is closed, one side twill portion 6 of the pressing member 61
The leading end of the sheet 7 is brought into pressure contact with the stepped portion 3b and clamped by 1c. When the drum 3 is rotated in the direction of arrow 2 in this state, the rear end of the sheet 7 is inserted into the open side of the pressing member, and then the free end of the holding member 66 is inserted into the driven pin 67. By colliding with and releasing the pressing member, the rear end of the sheet is pressed against the stepped portion 3c of the drum 3 and clamped. In the above-mentioned embodiment, since the recording needle was provided close to the circumferential surface of the drum, the pressing member for clamping the trailing edge of the sheet opened only after the drum 3 had rotated once. If the reading head (or the reading head) is separated from the drum circumferential surface, or if a plunger or the like is used to perform the approach action only during scanning, the rear end clamp of the pressing member 61 can be used as in the device shown in FIG. can be rotated while remaining open,
Also, by doing so, the mechanism becomes simpler. FIG. 11 shows a further embodiment in which the pressing member 71
is performed regardless of the lid 5 mentioned above.

The cam 72 pivotally attached to the main shaft 4 is integrated with a rotating member (not shown) provided at one end of the drum, and the cam 72 is rotated by manually rotating the rotating member. be done. The cam 72 is given a reversing and rolling habit by a compression spring 73 whose one end is locked to the drum. cam 72
When rotated clockwise from the position shown, the stopper 7
4 follows this and rotates counterclockwise. Note that the cam 72 is fixed to another stable point of the spring 73. The stopper 74 is pivotally connected to the drum 3 by a shaft 74b, and is given a counterclockwise rotational tendency by a spring (not shown).
Due to its rotation, the free end 74a joins the hole provided in the side plate 75, and by pressing the safety switch 76, the drum 3 is fixed in a predetermined position, and even if the start switch is activated by mistake, the drum 3 No drive is given to . Further, when the cam 72 rotates in the direction of the arrow, the trochanter 77 is pushed and moved. The driven member 78 on which the trochanter is mounted is pivotally connected to the drum 3 by a shaft 79, and a pin 81 mounted on the free end of the driven member 78 rotates counterclockwise as shown in FIG. Press the lower surface of the pressing member 71 as shown in FIG. The pressing section 71 is pulled inward by a spring 82 that is fixed to the drum 3 at one end, and is pulled while one side edge is fixed to a stopper 83 provided at each end of the drum 3. The pressing member 71 rotates about the center as shown in FIG. This position of the pressing member 71 is maintained by locking a pin 83 having a notch fixed to the pressing member to the stepped portion 84a of the holding member 84. The holding member 84 is pivotally connected to the drum 3 by a shaft 85. In this state, when the leading end of the sheet 7 is inserted as shown in FIG. 6 and the cam 72 is returned to the original position shown in FIG. 11, the left side green part of the pressing member 71 closes and the leading end of the sheet be clamped. When the drum 3 is rotated in this state, the rear end of the sheet is opened by the pressing member 7.
1 is inserted inside the other side edge of 1. In addition, holding village 8
The free end of the seat 7 abuts against the immovable pin 86 to release the pressing member 71, thereby closing the pressing member 71 and clamping the rear end of the seat 7. In this way, the pressing member 7 can be moved by the rotation of the cam 72, regardless of the opening/closing operation of the lid described above.
1, that is, the front and rear ends of the sheet can be clamped. According to the present invention, it is possible to clamp the leading and trailing ends of the sheet with a single pressing member, and the mechanism is simpler than the conventional device in which the leading and trailing ends are clamped using separate clamping members. When cranking,
By keeping the rotation of the drum in a stopped state, it is possible to easily perform the sheet clamping operation, and furthermore, by preventing the sheet from being clamped in conjunction with the opening and closing of the opening/closing lid, When detecting the sheet winding state, the inconvenience of the sheet clamp being released by opening the opening/closing lid is eliminated, and the clamping action is ensured.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a facsimile, FIG. 2 is a perspective view of a sheet clamping device showing an embodiment of the present invention, FIG. 3 is a side view of the device, and FIGS. 4 to 9 are FIG. 10 is a front view of a clamping device showing another embodiment of the present invention, FIG. 11 is a front view of a clamping device showing yet another embodiment of the present invention, and FIG. 12 is the same as above. It is an action diagram. 3...Drum, 6,61,71...Press member, 7...Sheet, 8...String member. Hakama I Zuzoku 2 figure 3 figure 4 figure 5 figure 6 figure 7 figure disgusting figure 0 figure 0 rare figure 0 digit good figure 2 figure

Claims (1)

[Scope of Claims] 1. A cam that is mounted on a shaft inside the drum and rotates back and forth by manual operation, and a cam that is installed so as to be able to move toward and away from the step of a long hole provided along the generatrix of the drum circumference. , Hirao includes a pressing member for clamping the leading and trailing ends of the sheet, which has a habit of coming into pressure contact with the stepped portion of the drum, and an interlocking member that is swingably provided in the vicinity of the rotation locus of the cam and comes into contact with the circumferential surface of the cam. a driven member having a pressing member that comes into contact with a substantially central portion of the lower surface of the pressing member; and a driven member that is swingably provided on the drum side near one side of the pressing member, and the pressing member is mounted on a stepped portion of the drum. a holding member that holds one side of the pressing member in that position when the pressing member is separated from the drum; and a holding member that is located near the pressing member at the drum stop position and moves the pressing member to the drum stage as the drum rotates. a member that collides with the holding member held apart from the holding member to release the holding member; When the cam rotates by manual operation, when the end comes out of contact with the periphery of the cam, it detects the rotation of the cam and drives the drum. A detection control member that puts the cam into an inactive state, and a driven member is interlocked by rotating the cam.
As a result of the interlocking of this driven member, the pressing member is separated from the drum tiered portion via the pressing actuating member, and one side of the pressing member in this state is held by the holding member, and the leading end of the sheet is moved to the drum tiered portion. The insertion is possible, and then the cam is returned to the initial position to release the pushing member of the driven member from pushing up, while one side of the pushing member is kept separated by the holding member. When the drum rotates, the rear end of the sheet can be inserted into the
A sheet clamp device that clamps the front and rear ends of the sheet by releasing the holding member by a release member when the rear end of the sheet is inserted when the drum rotates.