JPH0422908Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a workpiece holding jig that is used as a means for fixing workpieces processed by a processing device and can accommodate multiple workpieces of different thicknesses. It is.

(Prior Art) A work holding jig in a conventional simple processing equipment is shown in FIGS. 6 and 7. In both figures,
1 is a workpiece, 2 and 3 are holding members that press down the upper surface of the workpiece 1, and a processing device 4 is disposed below the holding members 2 and 3. The processing device 4 is used to press and hold the workpiece 1 with the holding member 2 or 3, and then process the workpiece 1.

This type of workpiece 1 does not particularly require forcible clamping by an actuator or the like since the resistance force in the thrust directions A and A' is small during machining.

In the above configuration, when the workpieces 1 having two different thicknesses, t and T, in the upper part 1a of the workpiece 1 are processed using the same equipment, the presser member 2 and the presser member 3 according to the thickness of the workpiece 1 are processed using the same equipment. The common method is to manually replace each time. In the figure, the holding member 2 corresponds to the workpiece 1 whose thickness t is small, and the holding member 3 corresponds to the workpiece 1 whose thickness T is thick.

On the other hand, in order to eliminate the need to manually replace the presser members 2 and 3, there is also an automated system. In this method, an actuator or the like is used to
The holding member 3 is also configured to be reciprocated to a predetermined position as appropriate.

(Problems to be Solved by the Invention) However, manually replacing the presser member in the prior art increases the number of work steps. That is,
As part of setup change work, it is necessary to attach and remove a plurality of bolts, etc., which wastes a lot of time and significantly reduces production capacity. In addition, a holding member 2 using an actuator, etc.
In the position switching method No. 3, the equipment becomes large-scale, resulting in problems such as an increase in equipment cost and an increase in space.

The present invention is intended to solve the above-mentioned problems.The purpose of this invention is to add a movable presser adjuster that serves as a guide means for thick workpieces, so that the thickness of the workpiece can be changed at the same time as the workpiece is inserted. To provide a work holding jig with a simple structure capable of holding a plurality of works.

(Means for Solving the Problems) As a means for solving the above-mentioned problems, the present invention provides a work support base that is arranged above a processing device and into which a work is loaded from the side, and a work support base that is arranged above a processing device and into which a work is loaded from the side. a fixed presser member having a bent portion on the tip side that is fixed to the workpiece and comes into contact with the upper surface of the workpiece having a predetermined thickness; It consists of a movable presser adjuster that presses down a workpiece that is thinner than the workpiece, and a biasing means that urges the movable presser adjuster toward the bent portion of the fixed presser member.

(Function) With the above configuration, when pressing a workpiece of a predetermined thickness, the movable presser adjuster is slightly displaced toward the fixed presser member against the force of the biasing means, and then the workpiece of the predetermined thickness is pressed. By loading the work into the work supporting base from the side and positioning it, the work can be reliably held down by the fixed holding member.

On the other hand, when pressing a workpiece that is thinner than the above-mentioned workpiece, the thin workpiece is loaded into the workpiece support base and positioned, and then the movable presser adjuster is moved to the workpiece side. By bringing the lower surface into contact with the upper surface of the thin workpiece, it can be held down reliably. That is, in this state, when processing a thin workpiece with the processing device, even if an upward external force is applied to the workpiece, the upward movement of the movable presser adjuster is inhibited by the bent portion of the fixed presser member. This makes it possible to press and hold thin workpieces using the movable presser foot adjuster.

In this way, by using the work holding jig of the present invention, it is possible to easily hold a plurality of workpieces with different thicknesses without replacing the jig itself or driving it with an actuator or the like.

(Example) Next, one embodiment of the present invention will be described.

In FIG. 4, 4 is a processing device, and 5 is a loading chute (workpiece support base) placed above the processing device 4. The loading chute 5 is provided with a hole 5a for supporting the upper part 1a of the workpiece 1. A plurality of workpieces 1 having different thicknesses are slid onto a carry-in chute 5 from the front in FIG. 4 and loaded. As shown in FIG. 3, the carry-in chute 5 is provided with a stopper 6 for positioning the loaded workpiece 1.

A pair of attachment stays 8 are fixed to both outer surfaces of the carry-in chute 5, and a work-holding bending member 9 having a substantially L-shaped cross section and having a tip portion bent toward the carry-in chute 5 side is fixed to the attachment stays. . The lower surface of the tip 9a of the bending member 9 is adapted to come into contact with the upper surface of the workpiece 1 of a predetermined thickness shown in FIG. The bending member 9 and the attachment stay 8 constitute a fixed presser member, which is an essential element of the present invention. Of course, both members 9 and 8 may be integrally constructed.

Between the bending member 9 and the loading chute 5, there is a first
A pair of movable presser adjusters 10 are arranged to hold down the thin workpiece 1 shown in the figure, and the pair of movable presser adjusters 10 are provided so as to be slidable in a direction orthogonal to the thickness direction of the upper part 1a of the workpiece 1. There is. As shown in Fig. 5, the movable presser foot adjuster 1
A tapered surface 10b is formed at both ends of 0.
As shown in FIG. 4, the upper and lower surfaces of the movable presser adjuster 10 are in surface contact with the lower surface of the bending member 9 and the upper surface of the carry-in chute 5, respectively. For this reason,
Movement of the movable presser adjuster 10 in the vertical direction is restricted.

A spring 11 is interposed between the movable presser adjuster 10 and the mounting stay 8, and this spring 11 always elastically urges the movable presser adjuster 10 toward the workpiece 1 with respect to the mounting stay 8. Movement of the movable presser adjuster 10 toward the workpiece 1 by the spring 11 is prevented by the front end surface of the movable presser adjuster 10 on the workpiece 1 side coming into contact with the inner surface of the tip portion 9a of the bending member 9.

With the work holding jig of the above embodiment, the work 1
A method of pressing the upper part 1a of the will be explained. First, a case will be described in which the upper part 1a of the work 1 presses a thin object. In FIG. 1, the workpiece 1 is inserted from the front onto the carry-in chute 5 until it comes into contact with the stopper 6 (see FIG. 3). When the workpiece 1 is positioned by the stopper 6, the lower surface of the movable presser adjuster 10 comes into contact with the upper surface of the workpiece 1.

When the processing device 4 (see Fig. 4) is operated in this state, a force P pushing up the workpiece 1 in the axial direction is generated.
However, upward movement of the workpiece 1 is reliably suppressed by the bending member 9 via the movable presser adjuster 10.

Next, a case where the upper part 1a of the work 1 presses a thick object will be described. In FIG. 2, the workpiece 1 is inserted from the front on the carry-in chute 5 until it comes into contact with the stopper 6 in the same manner as described above.
In this case, the pair of movable presser adjusters 10 float between the attachment stay 8 and the tip 9a of the bending member 9 due to the interruption of the workpiece 1, so the spring 11 contracts in synchronization with the insertion of the workpiece 1. As a result, the pair of movable presser adjusters 10 are pushed apart from each other. here,
The workpiece loading side end of the movable presser adjuster 10 is
As shown in FIG. 5, the tapered surface 10b is shaped so that the work 1 can easily cut in, and therefore also serves to guide the work 1 smoothly. Smooth loading of the workpiece 1 is also advantageous from the viewpoint of smoothly retracting the movable presser adjuster 10 to a predetermined position.

In this state, when the processing device 4 is operated, even if the force P pushing up the work 1 in the axial direction acts on the work 1 as described above, the upward movement of the work 1 is reliably suppressed by the bending member 9.

In addition, in this embodiment, the fixed pressing members 8, 9
A pair of movable presser adjusters are usually provided on both sides of the workpiece, but the number thereof is arbitrary.

(Effects of the invention) As described above, according to the invention, it is possible to reliably hold multiple workpieces with different thicknesses without requiring the installation of large-scale mechanical equipment such as an actuator, and in this case, the workpieces can be moved. With the presser foot adjuster, workpiece holding is completed at the same time as workpiece loading, so there is no special need for troublesome setup changes like in the past, making the work extremely simple, reducing work man-hours, and significantly increasing production capacity. can be increased.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of the present invention. Figure 1 is a sectional view showing the state when pressing a thin workpiece, and Figure 2 is a cross-sectional view when pressing a thick workpiece. FIG. 3 is a plan view showing the work holding jig, and FIG. 4 is a partially sectional front view showing the state when the work is being processed by the processing device while holding the work. FIG. 5 is a plan view of the movable presser adjuster. FIG. 6 is a plan view showing a conventional holding jig, and FIG. 7 is an overall front view showing a state in which a workpiece is processed by a processing device while being held down by the holding jig shown in FIG. 1...Workpiece, 5...Carrying chute (workpiece support base), 8...Mounting stay (fixed holding member), 9...Bending member (fixed holding member), 10...
Movable presser adjuster, 11...spring (biasing means).

Claims (1)

[Scope of utility model registration request] a workpiece support base disposed above the processing device and into which the workpiece is loaded from the side; a fixed holding member fixed to the workpiece support base and having a bent portion on the tip side that comes into contact with the upper surface of the workpiece having a predetermined thickness; , a movable presser adjuster that is slidably provided between the bent portion and the workpiece support base in a direction perpendicular to the workpiece thickness direction and that presses a workpiece that is thinner than the workpiece; and a movable presser adjuster that presses the workpiece that is thinner than the workpiece; A work holding jig comprising a biasing means for biasing toward a bent portion of the workpiece.