JPH0470563A - Apparatus for inspecting leather - Google Patents

Abstract

PURPOSE:To easily detect a flaw visually by pressing down leather by a press frame and raising a push-up element from the under surface of the leather to stretch the leather to develop a flaw place on the surface of the leather. CONSTITUTION:A press frame 5 is raised and leather B is drawn in an inspection region A to be developed and, thereafter, the press frame 5 is allowed to fall to press the leather B on an inspection table 1. Then, push-up elements 6 are raised to apply stretching force to the leather B. This force is increased and decreased so as to be set to a tolerant elastic deformation range on the basis of the value adjusted to the air cylinder mechanism pushing up the elements 6 to avoid the local deformation of the leather B before cutting. When stretching force is applied to the leather B, a flaw such as scratch or blood stripes is developed on the surface of the leather and can be easily marked by a worker.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention mainly relates to an inspection device for leather such as leather shoes.

(Prior Art) When natural leather is used as a material for leather shoes, it may be partially stretched during the processing process.

As a result, defects such as para-rings and veins inside the leather appear on the surface, which impairs the product value in terms of appearance.

For example, in the production of leather shoes, after the leather is cut and sewn, the leather is stretched during the fishing process, and it is only at this time that the above-mentioned defects of the leather become apparent. , As a result, this product is determined to be defective.

(Problem to be solved by the invention) However, since a considerable number of processing steps have gone through before such defective products are discovered, not only is the entire processing cost wasted, but even if there is only one defect, If there is, the entire material of the product is wasted. Moreover, in addition to this economic loss, the occurrence of defective products causes a shortage of lofts, resulting in inconveniences such as delivery delays.

Therefore, in order to avoid such a situation, it is reasonable to unfold the leather before cutting it, find out whether there is a defective part in it, mark it, and avoid the defective part. However, it is difficult to visually detect defective areas by simply laying out the leather on an inspection table.

(Objective of the Invention) The present invention has been made based on the above circumstances, and it is possible to stretch the leather within the range of elastic deformation before cutting the leather, so that defects can be easily detected visually. The purpose of this invention is to provide an inspection device for inspecting leather.

(Means for Solving the Problems) Therefore, in the present invention, as is clear from the illustrated embodiment, a predetermined inspection area is defined on the inspection table (1), and a holding frame ( 5) is disposed above the inspection table (1) so as to be movable up and down, and under the inspection table (1) there are a plurality of push-up elements (5) arranged corresponding to the inspection areas.
6), the push-up elements (6) are constructed so that they can be raised individually at a set pressure, and an operating means ( 9,
10).

(Function) Then, the leather is spread on the inspection table (1), the holding frame (5) is lowered onto it, and the leather is placed between it and the inspection table (1), When the push-up element (6) is pushed up from below, the leather in the test area is subjected to local stretching within the range of its permissible elastic deformation. As a result, defects such as para-rings and blood lines appear on the surface, so defective locations can be easily detected and marked by visual inspection.

(Example) Hereinafter, in Figure 0, an example of the present invention will be specifically described with reference to the drawings, reference numeral 1 is an examination table, and an examination area A is defined in the center. There are pillars 2 on both sides of the examination table l,
2 is erected, and from there there is a beam 3 pointing towards the inspection area A.
, 3 has been extended. An air cylinder mechanism 4.4 is attached to the ends of the beams 3, 3, and a piston rod 4A protrudes from the lower end of the air cylinder mechanisms 4, 4.
, 4A, a restraining frame 5 configured to surround the inspection area A is suspended.

On the other hand, under the inspection table 1, a plurality of elongated spike-shaped push-up elements 6 are arranged in parallel in the front and back. These push-up elements 6 are pushed up within a predetermined pressure by separate air cylinder mechanisms 7, so that they can protrude above the examination table 1.

The pressure of each air cylinder mechanism 7 can be adjusted individually by operating a pressure adjustment knob 8a on an operation panel 8 provided at the front edge of the examination table l.

Further, operating means 9 and 10 for vertically moving the restraining frame 5 and the push-up element 6 are installed at desired locations on the examination table 1 in the form of switch elements or the like.

In such a configuration, the leather B is pulled into the inspection area A with the restraining frame 5 raised and spread out, and then the restraining frame 5 is lowered to restrain the leather B on the inspection table 1, and,
By raising each push-up element 6, stretching force is applied to the leather B, but the force at this time is controlled by each air cylinder mechanism 7.
Since the value is adjusted for , it is within the allowable elastic deformation range and local deformation before cutting is avoided. When the leather is stretched in this way, loose rings, blood lines, etc. appear on the surface, and the operator can easily mark them.

In this embodiment, an illumination light is provided above the inspection table to facilitate the detection of defects, but the illumination device is placed below the inspection area A, that is, where the push-up element 6 is arranged. It is also possible to add a configuration that is provided on the side where the defective part is detected by transmitting light.

In addition to the air cylinder mechanism described above, the operating means 9 and 10 may be a hydraulic mechanism, a mechanism using a cam and a spring, or other various mechanisms.

(Effects of the Invention) The present invention has been described in detail above, and the leather is held down by the holding frame in the inspection area on the inspection table, and the push-up element is raised from below to stretch the leather. By doing this, defects are revealed on the surface and visually inspected.
Since it can be easily detected, it is possible to suppress the occurrence of defective products in subsequent processing processes and eliminate material waste.
In addition to reducing economic costs, it is possible to avoid inconveniences such as a shortage of quantity at the loft and a delay in delivery.

Furthermore, since a plurality of push-up elements are provided, even small defects can be easily identified by partially stretching the leather.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the main part, and Figs. 3 and 4 are perspective views showing the conditions of unfolding, pressing, and stretching the leather. . 1... Inspection table, 4... Air cylinder mechanism, 5
... Pressing frame, 6... Push-up element. 7... Air cylinder mechanism, 9, 10... Operating means. Figure 3 Figure 4

Claims (1)

[Claims] A predetermined inspection area is defined on the inspection table (1), and a restraining frame (5) surrounding this area is arranged so as to be movable up and down above the inspection table (1). A plurality of push-up elements (6) are arranged corresponding to the inspection area, and the push-up elements (6) are configured so that they can be raised individually at a set pressure, and ) and operating means (9, 10) for vertically moving the push-up element (6).