JPH024128Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a card feed roller pressing device, and is used to press the feed roller against the nose portion of a date plate.

Conventional technology In conventional cards, the height from the top of the quad frame to the pressurized receiving member on the top of the step that holds the feed roller differs depending on the model, so this height must be adjusted for each machine. For example, in a weight hook as disclosed in Japanese Utility Model Publication No. 58-48373, the engagement between the lower end surface of the upper end hook portion curved at 180 degrees and the lower end portion that engages with the upper end hook portion of the spring is measured. The hole was dimensioned longitudinally and connected to the upper end hook of the spring.

Problems to be Solved by the Invention In the above conventional configuration, in order to connect the upper end hook portion of the spring to the engagement hole of the weight hook, the spring must be stretched and the hook portion must be hooked into the engagement hole. However, this spring has a large spring constant and is difficult to stretch by hand, so it is difficult to fit the hook part of the spring into the engagement hole of the weight hook or remove it from the engagement hole. There was an inconvenience that was extremely troublesome.

This invention is an attempt to solve the above-mentioned conventional disadvantages.

Means for Solving the Problems This invention is a feed roller pressurizing device for cards, in which the weight transmission rod is provided with a long hole at the lower end that engages with the upper end of the spring, and at the upper end in the longitudinal direction. A right-angled upper end bent portion is formed, and a screw member that presses the upper surface of the step that holds the feed roller is screwed into the upper end bent portion in the longitudinal direction of the weight transmission rod, and a threaded member that presses the upper surface of the step that holds the feed roller is screwed into the upper end bent portion. On the side extension line, an eccentric cam equipped with a rotatably slidable spring mounting member is provided horizontally so as to be rotatable, and a spring for pressurizing the feed roller is provided between the spring mounting member and the lower end of the weight transmission rod. It is characterized in that it can be worn.

Function: In the device of this invention, when the screw screwed into the screw hole in the bent portion of the upper end of the weight transmission rod is moved upwardly, the bent portion of the upper end of the weight transmission rod moves toward the step that holds the feed roller. , since the engagement hole at the lower end of the weight transmission rod moves toward the upper end hook of the spring, the upper end hook of the spring can fit into the engagement hole of the weight transmission rod without stretching the spring with a large spring constant. This means that it can be combined with After the weight transmission rod has been connected, play in the joint between the engagement hole of the weight transmission rod and the upper end hook of the spring is eliminated by advancing the screw threaded into the screw hole downward and pulling it upward. If the eccentric cam is rotated back and forth 180 degrees via the operating member in this state, a force equivalent to the stretched length of the spring will act as a pressing force on the feed roller via the step. .

Embodiment The feed roller 2 that feeds the wrap to the taker-in roller 1 of the card is arranged horizontally and e.g.
It is rotatably held by a step 3 disposed at an inclination angle of θ ₁ =15°, and is brought into contact with a nose portion 4a at the tip of the dish plate 4. Reference numeral 5 denotes a support member that holds the step 3 at an angle set relative to the card frame 6. The direction in which the feed roller 2 is pressed against the nose portion 4a is determined by the angle θ ₂ that the weight transmission rod 7 makes with the horizontal direction, and this size is usually
θ ₂ =75°.

The upper end of the weight transmission rod 7 is bent at right angles toward the step 3 that holds the feed roller 2, and the weight transmission rod 7 is bent at the upper end bent portion 7a.
A screw hole 8 parallel to the screw hole 8 is provided, and the lower end of the screw 9 that is threaded into the screw hole 8
Recessed hole 1 of pressure receiving member 10 fixed to the upper end surface of
0a, the lower end 7b of the weight transmission rod 7
The upper hook portion 12a of the spring 12, which is connected to the elongated hole 11 provided in the feed roller 2, presses the feed roller 2 against the nose portion 4a in a direction forming an angle θ ₂ =75° with respect to the horizontal direction. 9a is a locking nut that holds the screw 9 in the adjusted position.

An eccentric cam 15 is provided below the spring 12 and is pivotally connected at an eccentric position to a bracket 13 fixed to the card frame 6 at an eccentric position. The eccentric cam 15 is rotatably held by a shaft 14 that passes through a through hole 16 provided at an eccentric position, and a snap ring 18 is fitted into an annular groove 17 formed in the shaft 14.
It is held so that it does not come off the shaft 14. The eccentric cam 15 is fitted into a small diameter portion 15a on the side of the bracket 13, which has a slightly smaller diameter, so that a spring mounting member 19 can rotate. 20 is connected to the lower end hook portion 12b of the spring 12. An operation handle 21 having a grip portion 21a at one end is attached to the circumferential surface of the eccentric cam 15, and is directed toward the center O of the eccentric cam 15.
A pin 22 is fixedly provided at a position closer to the bracket 13 than the operating handle 21 and also pointing toward the center O.

The rotation of the eccentric cam 15 is not limited to the case where the operating handle 21 is used;
A hexagonal protrusion may be provided on the end face of the hexagonal protrusion, and the rotation may be performed using a wrench or the like engaged with the protrusion.

On the cam mounting surface 13a of the bracket 13, the center O of the eccentric cam 15 is located at the center of the shaft 14 (eccentric center).
A stopper 23 is fixedly installed to stop the rotated pin 22' when the pin 22' is rotated by 180 degrees with respect to C and reaches the position indicated by O'. The 180° rotation of the eccentric cam 15 by the operation handle 21 is controlled by a mark made on the cam mounting surface 13a of the bracket 13, omitting the use of the pin 22 and stopper 23.
The eccentric cam 15 may be held at a position rotated by 180 degrees.

Next, the operation of the device will be explained.

When connecting the spring 12 to the weight transmission rod 7, the screw 9 screwed into the screw hole 8 of the upper end bent portion 7a is rotated and retracted upward.
Since the tip of the weight transmission rod 7 is supported by the concave hole 10a of the pressure receiving member 10, the weight transmission rod 7 is lowered, and the elongated hole 11 provided in the lower end 7b is supported by the spring 12.
moves toward the upper end hook portion 12a. Therefore,
By moving the spring 12 around the hole 20 of the spring mounting member 19 or along the small diameter portion 15a of the eccentric cam 15 together with the spring mounting member 19, the spring constant is large and it is difficult to stretch it by hand. Also in the case of the spring 12, the weight transmission rod 7
The connection between the spring 12 and the spring 12 can be carried out very easily.

When pressurizing the feed roller 2 via the weight transmission rod 7, the weight transmission rod 7 is moved upward by rotating the screw 9 and moving it forward downward.
When the gap at the joint between the elongated hole 11 of the lower end 7b and the upper end hook 12a of the spring 12 becomes exactly zero, tighten the locking nut 9a to insert the screw 9 into the upper end bent portion 7a of the weight transmission rod 7. sticks to. Next, when the eccentric cam 15 is rotated by grasping the grip 21a of the operating handle 21 to the position shown by the chain double-dashed line in FIG. 1, where the pin 22 is stopped by the stopper 23, the center O of the eccentric cam 15
rotates 180 degrees with respect to the center C of the shaft 14 and moves to the position shown at O'. Since the protruding portion 19a is rotated and slid along the small diameter portion 15a of the eccentric cam 15 so as to be oriented in the direction shown in FIG.

Therefore, the pressure of the feed roller 2 by the screw 9 is parallel to the holding direction of the weight transmission rod 7 with respect to the nose portion 4a of the dish plate 4.
In addition, the pressing force on the feed roller 2 in this case is determined by adjusting the length of the spring 12 stretched by the 180° rotation of the eccentric cam 15, ′=l, to an appropriate magnitude considering the value of the spring constant. By setting
Since it can be easily adjusted to a predetermined value (approximately 110 kg on one side), the taker-in roller 1 can provide the optimum carding effect to the not-illustrated lap fed by the feed roller 2. Note that the connection between the weight transmission rod 7 and the spring 12 can be removed very easily by lowering the weight transmission rod 7 by rotating the screw 9, without stretching the spring 12 as in the case of connecting the two. Can be done.

Effects of the invention This invention screws together a threaded member that comes into contact with the upper end surface of the step that holds the feed roller at the bent portion of the upper end of the weight transmission rod, and also connects the weight to the rotatable spring mounting member attached to the eccentric cam. Since a spring for pressurizing the feed roller is installed between the lower end of the transmission rod, by retracting the screw member and lowering the weight transmission rod, the spring constant is large and difficult to stretch by hand. This provides an excellent practical effect in that the spring can be attached to and detached from the weight transmission rod very easily in its natural length state.

Furthermore, before the spring is stretched by the rotation of the eccentric cam, the weight transmission rod is moved upward by the advancement of the screw member and a preset initial tension is applied to the spring. It has a special effect of being able to freely adjust the pressure applied to it.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of this invention, and FIG. 2 is a left front view of the main part. 2...Feed roller, 3...Step, 7...
...Weight transmission rod, 7a...Top end bent part, 7
b...Lower end, 8...Screw hole, 9...Screw, 11
...Elongated hole, 12...Spring, 15...Eccentric cam, 1
9... Spring mounting member.

Claims (1)

[Claims for Utility Model Registration] The weight transmission rod is provided with a long hole at the lower end that engages with the upper end of the spring, and at the upper end is formed an upper end bent portion perpendicular to the length direction, and this upper end bent portion A screw member that presses the top surface of the step that holds the feed roller is screwed together in the length direction of the weight transmission rod, and on the lower extension line of the weight transmission rod in the length direction,
An eccentric cam equipped with a spring mounting member that can rotate and slide is provided horizontally so as to be rotatable, and a spring for pressurizing the feed roller is installed between the spring mounting member and the lower end of the weight transmission rod. A feed roller pressurizing device for cards.