Design Of Tongue Opening Gallbladder Shoes

The tongue opening type gallbladder shoes are formed on the basis of tongue shaped shoes.

1. finished product drawing
As shown in Fig. 2-3-4, the shoes and gallbladder parts are segmented from the front part. The whole tongue shoe is first designed, and then the shoe gall parts are split on the front.

2. structure design drawing
The structure design of tongue opening type gallbladder shoes is shown in figure 2-3-5.

First design the components of the tongue type shoes, then design the shoes and gallbladder parts. The design of shoes and gallbladder parts is still carried out in three steps.

The first step is to design the original shoe gall according to the pattern requirements of the finished product, and set the width of the shoe bladder Jo point on the front width line. Connect the J00 line to the auxiliary line, and the shoe gallbladder line changes under the Jo0 line. Before the Jo0 line 1/2, the shoe gallbladder line is convex, forming a concave line after the Jo0 line 1/2, extending parallel to the AJ line and extending back to the O'point. Determination of shoe gallbladder after smooth shape
Boundary line. The shoe dash line and the original back middle curve form the original shoe gall, and the original shoe shoe is made as a duplicate board. The length of the replica board can be taken to V'.

The second step: as the back line of the shoes, the tongue of the whole tongue shoe is kept open, and the line is changed and the EV line is extended as the middle line of the back of the shoe. The J2 point is found by intersecting the arc between the point and the midline. The J2 point is the conversion length point, and the actual length J'point is also found, and the length difference is determined. In the design of the cover shoe, "1 pieces are added to the shoe cover and 1 pieces are added to the surround strip", and only a gap is maintained between the fence strip and the shoe cover. When designing a gall bladder, there should be only 1 gaps. For this reason, the length difference of 2 parts should be added to the shoes to determine the distance from the width of the shoe parts.
J2 point only 1 parts of the length difference, locate J3 point. The direction of the opening of the gallbladder is different from that of the shoe, which is easier to carry over.

The third step: design the outline of the shoe bladder parts. Use the replica board to design the shoe gall parts in the straight line of the back. First, the J point of the replica board is aligned with the J3 point on the back midline, and the J'point is determined to ensure that the width of the shoe gallbladder remains unchanged. Then draw the outline line of the shoe parts like the shoe covers, and the parts that are not long enough to be linked up. The front section can be used as a parallel line to control the upper and lower lengths (AJ long and A'J). Length) equal. After the graphic design is completed, the difference between the inside and outside of the line and the outline of the shoe should be concentrated. This processing method is like dealing with the shoe with cover, making only a difference between the concave arc. Finally, finish the bottom line and make the difference between inside and outside.

Attention to the length of the shoes will be less than half the length of the bar, still use the method of stretching the bottom edge, so that the back midline bend, is conducive to the last.