CN113771544B

CN113771544B - Leather carving picture carved and highlighted on cow leather and manufacturing method thereof

Info

Publication number: CN113771544B
Application number: CN202111199180.7A
Authority: CN
Inventors: 赵麓麓
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-12-02
Anticipated expiration: 2041-10-14
Also published as: CN113771544A

Abstract

The invention discloses a leather carving picture with a carved and highlighted appearance on a cowhide, which is mainly characterized in that the carved picture with the highlighted appearance on the cowhide plane at least shows four areas on the cowhide plane respectively: a first compaction recess region, a prominent region presented relative to the first compaction recess region, a second compaction recess region distributed within the prominent region, and a decorative region distributed within the first compaction recess region and/or the second compaction recess region on the plane of the cowhide; also discloses a manufacturing method of the leather carving picture engraved and highlighted on the cowhide, which is mainly characterized in that the step of dividing the boundary line of the cut is to obviously highlight the highlighted area; tamping the first compacted concave region and the second compacted concave region to enable an intersection region to exist between adjacent tamping stamps and to enable each tamping region to be flat; the embossed area is made more striking by carving the decorative area at the chisel, and the problem of cracking caused by the indentation remained on the sunken plane in the prior art is solved.

Description

Leather carving picture carved on cow leather and with convex display and manufacturing method thereof

Technical Field

The invention relates to the technical field of leather processing, in particular to a leather carving picture with a raised display carved on cow leather and a manufacturing method thereof.

Background

The effect of the existing three-dimensional patterns carved on the cowhide is not obvious, and the three-dimensional layering sense of the carved leather is not strong; at present, the manufacturing methods for engraving the convex leather carving three-dimensional patterns on the cowhide mainly comprise two methods, one method is manual manufacturing, and the other method is mechanical manufacturing, and the two methods have a common defect that the outline of the convex leather carving patterns on the cowhide canvas is in round angle or positive slope transition with the basal plane of the cowhide canvas. A positive slope is a slope with an upper profile smaller than a lower profile.

As shown in fig. 1, the leather carving three-dimensional pattern is carved and highlighted on a square cowhide canvas, the shape of the leather carving three-dimensional pattern is hexagonal, a round hole is arranged in the hexagon, and the outlines of the hexagon and the round hole are both transited to the square cowhide canvas through round corners, so that the pattern outline is prevented from collapsing when the cowhide canvas is beaten by a tool hammer during manual carving, and then transited through the round corners; the mechanized messenger obtains protruding skin carving solid pattern through mould punching press process, because in stamping process, the blanking force of equipment output is invariable, if do not have fillet or just sloping domatic transition will take place protruding skin carving solid pattern's profile large tracts of land to sink on the base face of cow hide canvas, be more difficult to make the drawing of patterns of protruding skin carving solid pattern after the sculpture and mould in addition, and then there is fillet or just sloping domatic effect that has leaded to carved protruding skin carving solid pattern on the cow hide unobvious. The mechanical manufacturing has the disadvantage that some products with negative slope surfaces, i.e. slope surfaces formed by the upper profile being larger than the lower profile, cannot be realized by mechanical operation, and the prominent three-dimensional effect is not obvious because the product cannot be demoulded;

especially, when the circular holes in fig. 1 are engraved mechanically, the smaller the circular holes are, the more difficult the effect of the convex leather-engraved three-dimensional pattern is generated, generally, in the convex leather-engraved three-dimensional pattern, in the outline of the convex three-dimensional pattern, the outline shape similar to a circle or other irregular closed loops, the height of the bottom surface is higher than the base surface of the cowhide canvas, because the shape is small and is difficult to be made into the same height as the base surface of the cowhide canvas, the collapse of the local line outline is avoided, and therefore, the three-dimensional effect of the convex leather-engraved three-dimensional pattern is not obvious;

especially, the flowers and the plants of the Tang grass style pattern mainly comprising the flower and the plant elements are fully covered with the whole canvas, so that the flowers and the plant elements are required to form concave planes at closed loop outlines formed among the flower and the plant elements so as to be highlighted, and the concave planes at the closed loop outlines are different in depth just because of the reasons, so that the three-dimensional effect of the highlighted leather carving three-dimensional pattern is not obvious;

in addition, another drawback of the manual manufacture of the raised leather carving three-dimensional pattern is that there is an indentation at the plane or the round corner of the raised leather carving three-dimensional pattern, which is formed when the raised leather carving three-dimensional pattern is depressed, and the indentation is formed by striking with the hammer, because the force of each striking is inconsistent when the hammer is struck with the hammer, the depth of the depressed plane is inconsistent, therefore, the indentation with high hammering force cannot be repaired and remains on the depressed plane, and the indentation is shown in fig. 2 at the round corner and the round hole plane. As time goes on, the indentation remained on the concave plane will generate stress crack, which affects the whole effect of the convex leather carving three-dimensional pattern and is not easy to be collected.

With the improvement of living standard, the leather carving three-dimensional patterns on the cowhide not only can decorate leather bag products, but also can highlight leather carving works with high quality, thereby becoming necessary collections of art enthusiasts; meanwhile, the high-quality convex leather carving works can also enable the technology to be inherited and popularized.

In order to produce and prepare the luggage leather with beautiful style, good visual effect of relief patterns and obvious touch feeling, the Chinese patent with the publication number of CN104445039B discloses a method for preparing the luggage leather, which mainly comprises the steps of placing the cowhide carved with the relief patterns in a three-dimensional forming die, pressing the relief pattern part on the inner side of the corium layer of the cowhide, forming a convex pattern structure consistent with the relief patterns on the outer surface of the corium layer of the cowhide, performing antiseptic treatment on the cowhide with the convex pattern structure formed on the corium layer, and performing glue injection treatment on the hypodermis tissue layer of the cowhide after the antiseptic treatment so that soft glue injected into the hypodermis tissue layer of the cowhide can effectively enhance the overall elasticity; there is no mention of any means for treating the rounded or beveled corners at the transition between the outer surface of the dermis and the relief pattern profile.

Chinese patent publication No. CN100486820 discloses a method for carving genuine leather, which comprises drawing a pattern to be carved on a colored genuine leather fabric with an oil painting stick, contrasting the colors of the carved genuine leather fabric by the colors of the oil painting stick, and using the color difference to set off the pattern when carving. Carving the patterns by a carving knife or other tools along the patterns drawn by the oil painting stick, generally only a superficial grain carving surface layer is needed, a net layer is exposed, and knife marks with different depths and sizes are carved, wherein the length and width directions of the knife marks can be random according to the patterns. The grain surface layer with darker leather color is compared with the reticular layer with lighter color to form the leather engraving effect. The technology is popularized, and the effect of convex-concave layering is not obvious.

The invention discloses a method for making leather carving picture, which is a Chinese patent with the publication number of CN1049629C, selecting processed middle and small cowhide, coating water on the surface of the leather for wetting, coating resin, tracing, wetting again to make the water content of the leather reach 20-30 wt%, carving along the lines of the pattern traced on the leather surface with a carving knife, selecting the width and depth of the nick according to the requirement of the picture, dyeing according to the requirement of the picture, wetting again, making three-dimensional according to the requirement of the picture, and finally fixing and brightening with a fixing agent and a brightening agent. The document does not mention which means are used to treat the rounded and beveled corners at the transition between the outer surface of the dermis and the relief pattern profile.

The invention patent with publication number CN1123745A discloses a genuine leather carving art, which mainly adopts the method that a hammer and a tool similar to a blunderpunch (a tool with a head of a deviation, an arc or a circle made according to a pattern) are used for knocking a convex surface and a concave surface along a previous notch; finally, the leather fixing agent and the brightener are sprayed to protect the picture. The prior art is a common method, and the beating force is not easy to master, so that the indentation defect shown in figure 2 is caused.

Disclosure of Invention

The invention aims to overcome the technical problem that the three-dimensional effect of the pattern of the convex leather carving is not obvious due to the fact that the pattern contour of the convex leather carving is in transition with the basal plane of the cowhide canvas by adopting a technical means of round corner transition or a positive slope structure on the cowhide canvas. And secondly, the problem that the flatness and the smoothness of the local small-area regular or irregular closed-loop contour within the contour of the raised leather carving three-dimensional pattern are inconsistent is solved. Thirdly, the crack defect caused by the indentation remained on the concave plane is overcome.

In order to overcome the technical problems, the invention provides a leather carving picture convexly carved on cowhide, which is characterized in that the carving picture convexly shown on the plane of the cowhide is carved on the plane of the cowhide, the carving picture consists of a plane pattern and/or a three-dimensional pattern, the carving picture convexly shown on the plane of the cowhide at least appears to be composed of four areas on the plane of the cowhide, and the four areas are respectively as follows: a first compaction depression region, a prominent region presented relative to the first compaction depression region, a second compaction depression region distributed within the prominent region, and a decoration region distributed within the first compaction depression region and/or the second compaction depression region on the cowhide plane;

the decorative area is provided with a groove, and a plurality of geometric figure units are formed in the decorative area by arranging the trend of the groove.

The invention also provides a method for manufacturing the leather carving picture by carving and highlighting on the cowhide, which at least comprises the following steps:

firstly, shaping the back of cowhide; wetting the front side of the cowhide; step three, coating a film on the master plate pattern; fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step; step five, tracing; sixthly, performing secondary wetting treatment on the front side of the cowhide; seventhly, carving the boundary line of the area; step eight, wetting the boundary of the cut; step nine, dividing the boundary line of the cut; step ten, wetting the first compaction concave area and the second compaction concave area; step eleven, tamping the first compaction concave area; step twelve, tamping the second compacted concave area; step thirteen, correcting the first compaction concave region and the second compaction concave region after tamping; fourteen, wetting the tamping imprints of the first compacting sunken area and the second compacting sunken area; fifteen, carving the decorative area;

the invention also provides another manufacturing method for engraving the convex leather engraving picture on the cowhide, which at least comprises the following steps:

step one, carrying out shaping treatment on the back of cow leather; wetting the front side of the cowhide; step three, carving the boundary line of the area; step four, wetting the boundary of the cut; step five, dividing the boundary line of the cut; wetting the first compaction concave area and the second compaction concave area; step seven, tamping the first compaction sunken area; step eight, tamping the second compaction concave area; step nine, correcting the first compaction concave area and the second compaction concave area after tamping; step ten, wetting the tamping marks of the first compaction concave area and the second compaction concave area; step eleven, carving the decorative area with a chisel;

compared with the prior art, the invention has the beneficial effects that: the step of dividing the boundary line of the cut is to obviously highlight the highlighted area; tamping the first compacted concave region and the second compacted concave region to enable an intersection region to exist between adjacent tamping stamps and to enable each tamping region to be flat; the appearing highlighted area is more striking by carving the decorative area, and the problem of cracking caused by the indentation remained on the concave plane in the prior art is solved.

Through the implementation of the invention, when the leather bag decoration is applied to decoration of leather bag products, the striking degree of the leather carving works is raised, the raised area is beautiful and neat, and the quality is improved. When the artificial handicraft is collected, the surfaces of the first sunken area and the second sunken area are smooth and flat without indentations, no cracking phenomenon is generated, and the collection value is high; meanwhile, the technology can be further innovated, inherited and popularized through the concept disclosed by the invention.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIGS. 1 and 2 are schematic structural views of a leather carving picture highlighted by carving on the leather presented by the prior art;

FIG. 3 is a schematic view of a leather carving picture with a convex surface carved on a cowhide according to the present invention;

FIG. 4 is a broken away cross-sectional view of FIG. 3;

FIG. 5 is an enlarged partial view of the area A shown in FIG. 4;

fig. 6 and 7 are provided by the present invention, respectively: the schematic diagram of the three-dimensional surface morphology presented in step nine in the first method and step five in the second method, and fig. 6 is a broken cross-sectional view to present the morphology of the inclined three-dimensional surface to be expressed in fig. 7;

FIGS. 8, 9, 10 and 11 are schematic views of the structure of a cylindrical rigid punch head with a geometric profile at the bottom according to the invention;

FIGS. 12, 13, 14, 15, 16, 17 are schematic illustrations of tamping a first compaction recess region and tamping a second compaction recess region, respectively, in accordance with the present invention;

FIG. 18 is a flower pattern of the embossed flowers engraved on the hide of the cow as in EXAMPLE 1;

FIG. 19 is the flower pattern presented by the tracing step in example 1;

FIG. 20 is the flower-shaped pattern presented by the dividing cut boundary step in example 1;

FIG. 21 is a schematic illustration of the step of tamping the first recessed area presented in example 1;

FIG. 22 is a schematic structural view of the embossed leather carving picture showing a flower-shaped pattern according to example 1;

FIG. 23 is a schematic structural view of a rigid cylinder chisel;

it should be clear that: the drawings disclosed herein are for purposes of illustration only, and are not intended to be exhaustive of the embodiments; it is only for the purpose of facilitating the understanding of the gist of the present invention by those skilled in the art, and any changes and substitutions that can be easily made by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the protection scope of the present patent application.

Detailed Description

It should be understood that the cow leather mentioned in the present invention is any one of vegetable tanning leather, hide carving leather, bark of tree paste (cake), tannin extract and leather belt, and is not called uniformly due to differences in local culture. Therefore, the above designation is generalized to bovine hide for the purpose of disambiguating its understanding.

As shown in fig. 3-5, a leather carving picture with a convex pattern engraved on the surface of cow leather, and a carving picture with a convex pattern embossed on the surface of cow leather, wherein the carving picture is composed of a plane pattern and/or a three-dimensional pattern, the carving picture embossed on the surface of cow leather is at least represented by four areas on the surface of cow leather, and the four areas are respectively: on the plane of the cowhide, a first compaction recess region 1, a prominent region 3 presented relative to the first compaction recess region, second compaction recess regions 2 distributed within the prominent region, and decorative regions 4 distributed within the first compaction recess region and/or the second compaction recess region;

according to different styles of engravings, the plane patterns and/or the three-dimensional patterns can be distributed in the highlighted areas, and the plane patterns and/or the three-dimensional patterns can also be distributed outside the highlighted areas.

In order to highlight the three-dimensional effect of the three-dimensional pattern in the highlight area, the decorative area 4 is arranged through the first compacted concave area and/or the second compacted concave area, so that the three-dimensional effect of the three-dimensional pattern in the highlight area is highlighted.

The decorative area is provided with a groove 5, and a plurality of geometric figure units 6 are formed in the decorative area by arranging the trend of the groove.

More specifically, the geometric elements 6 comprise regular geometric elements and/or irregular geometric elements.

Further preferably, the geometric figure unit 6 may be a regular triangle, square, rectangle, isosceles trapezoid, parallelogram, equilateral polygon, etc., and the geometric figure unit 6 may be an irregular four-transformation, polygon, etc. The decorative area 4 is formed by an irregular arrangement of several geometric elements 6.

Of course, the geometric figure unit 6 in the decoration region 4 may also include a few circles or ellipses other than the above, which are doped in the decoration region 4, but it is not limited to the circles or ellipses in the decoration region 4, and the stereoscopic effect of the stereoscopic pattern in the highlight region cannot be highlighted if the circles or ellipses are limited in the decoration region 4.

Furthermore, a geometric pattern is arranged in the geometric figure unit 6.

Further preferably, the geometric pattern is at least one of a dotted shape, a linear shape, a reticulate pattern or a plane shape, and the geometric pattern is used for showing the same three-dimensional effect of the three-dimensional pattern in the highlight area;

further, the groove 5 is in a V shape.

The invention provides two manufacturing methods for engraving a convex leather engraving picture on cow leather, wherein the first method at least comprises the following steps:

step one, carrying out shaping treatment on the back of cow leather; wetting the front side of the cowhide; step three, coating a film on the master plate pattern; fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step; step five, tracing; sixthly, performing secondary wetting treatment on the front side of the cowhide; step seven, engraving the boundary line of the area; step eight, wetting the boundary of the cut; step nine, dividing the boundary line of the cut; step ten, wetting the first compaction concave area and the second compaction concave area; step eleven, tamping the first compaction concave area; step twelve, tamping the second compacted concave area; step thirteen, correcting the first compaction concave region and the second compaction concave region after tamping; fourteen, wetting and processing tamping marks of the first compaction concave area and the second compaction concave area; fifthly, carving the decorative area;

the invention provides two manufacturing methods for engraving a convex leather engraving picture on cow leather, and the second method at least comprises the following steps:

firstly, shaping the back of cowhide; wetting the front side of the cowhide; step three, carving the boundary line of the area; step four, wetting the boundary of the cut; step five, dividing the boundary line of the cut; wetting the first compaction concave area and the second compaction concave area; step seven, tamping the first compaction sunken area; step eight, tamping the second compaction concave area; step nine, correcting the first compaction concave area and the second compaction concave area after tamping; step ten, wetting the tamping imprints of the first compacting sunken area and the second compacting sunken area; step eleven, carving the decorative area;

the difference between the above two methods is shown by the comparison: the second method omits the third step in the first method, and the master plate pattern is coated with a film; fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step; step five, tracing; step six, performing secondary wetting treatment on the front surface of the cowhide, and describing so far, the method comprises the following steps: the steps omitted in the second method are the steps which are already skilled in the art to master the structural elements of the same convex leather carving picture to be carved on the basis of implementing the first method, so that the manufacturing efficiency is improved, and the omitted steps do not influence the picture quality;

in order to make the technical structural elements of the embossed leather carving picture on the cowhide clearly understood and reproduced by the technical personnel in the field, the making method of the embossed leather carving picture on the cowhide is described in the following with the figures, when the technical personnel in the field can not grasp and present the structural elements of the same embossed leather carving picture, the first making method is adopted, the making method at least comprises the following steps:

firstly, carrying out shaping treatment on the back surface of the cowhide, namely adhering the back surface of the cowhide by using an adhesive tape, and preventing the contour line of the cowhide breadth from stretching when the first compaction concave area and/or the second compaction concave area are/is manufactured;

wetting the front side of the cowhide, adhering the back side of the cowhide by using an adhesive tape, enabling the front side of the cowhide to face upwards, and wiping the front side of the cowhide by using sponge or towel to wet the front side of the cowhide; wetting the cowhide with water until a trace can be carved on the wetted cowhide with a stylus;

step three, laminating a film on the master plate pattern, and coating plastic films on the front side and the back side of the master plate pattern;

fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step;

drawing, namely drawing the outline in the master mask pattern on the front surface of the cow leather by using a stylus along the outline edge of the master mask pattern, taking down the master mask pattern after drawing is finished, and marking the front surface of the cow leather with the outline of the pattern to be carved;

step six, carrying out secondary wetting treatment on the front side of the cowhide, and wiping the front side of the cowhide by dipping water with a sponge or a towel to wet the front side of the cowhide;

step seven, carving the boundary lines of the areas, cutting the marks of the pattern outline obtained by tracing in the step five into fibers of the cowhide skin layer along the marks of the pattern outline by a graver, and enabling the pattern outline on the cowhide to present the cut boundary lines of the first compacted concave area, the highlighted area and the second compacted concave area;

step eight, wetting the cut boundary, namely wiping the cut boundary obtained in the step seven by dipping sponge or towel in water to wet the cut boundary;

step nine, dividing the boundary line of the cut, and using a tool with the bottom being an inclined plane, wherein the inclined plane at the bottom of the tool is provided with one of a pockmark-shaped pattern, a linear pattern, a reticulate pattern or a plane pattern; the inclined plane of the tool faces the first compaction concave area or the second compaction concave area, the handle end part of the tool with the inclined plane at the bottom is knocked successively along the boundary line of the cut, and meanwhile, the nicking tool is moved along the direction of the boundary line of the cut to divide the boundary line of the cut until the tool with the inclined plane at the bottom is divided along the boundary line of the cut; the outline of the first compaction sunken area or the second compaction sunken area is extruded by a tool with an inclined plane at the bottom after being beaten, so that an obvious three-dimensional inclined plane is formed on the outline of the first compaction sunken area or the second compaction sunken area, and the three-dimensional inclined plane presents one of a spotted pattern, a linear pattern, a reticulate pattern or a planar pattern; simultaneously, chiseling the outline of the highlighted area into a three-dimensional surface which is vertical to or inclined relative to the plane of the cowhide by the back surface of the tool with the bottom being an inclined surface; the configuration of the outline of the highlighted area perpendicular to the plane of the hide is shown in fig. 6. The configuration of the outline of the highlighted area inclined to the plane of the cowhide is shown in fig. 7.

The outline of the convex area is vertical to the plane of the cowhide or is relatively inclined to the plane of the cowhide, the included angle formed by the back of the tool with the inclined bottom and the plane of the cowhide is mainly determined, and when the back of the tool with the inclined bottom and the plane of the cowhide are attached, the edge outline surface of the convex area is vertical to the plane of the cowhide; as shown in fig. 7, when the tool with the inclined bottom surface is inclined to the plane of the cowhide, that is, the back surface of the tool with the inclined bottom surface forms an included angle with the plane of the cowhide, the edge contour surface of the protruding region forms a three-dimensional surface inclined relative to the plane of the cowhide, and the three-dimensional surface inclined relative to the plane of the cowhide may be a tangent slope surface mentioned in the background art or a negative slope surface, so as to significantly improve the three-dimensional effect of the three-dimensional surface, and the negative slope surface is also unavailable in the prior art, and the technical structural feature of the negative slope surface is convenient to realize the presentation of a downward curved geometric three-dimensional figure in the actual engraving process, for example: the outermost vegetable leaves of cabbage, which have not been rolled down before coating the cabbage heart; for another example: the lotus flower leaves have large areas, so the edge contour of the lotus flower leaves is actually presented in a downward curled shape; therefore, the three-dimensional effect to be presented by the downward-curling shape is solved through the technical structural element characteristics of the negative slope.

Because the incision boundary lines are subjected to wetting treatment in the step eight, in the process of dividing the incision boundary lines, the contour of the convex area is always attached to the convex area on the back surface of the tool with the inclined surface at the bottom in the moving process of the tool with the inclined surface at the bottom, so that the formed three-dimensional surface is smooth and has no fillet, and the three-dimensional effect of forming the three-dimensional surface by carving and chiseling the contour of the convex area is obviously improved;

step ten, wetting the first compaction sunken area and the second compaction sunken area, and wiping the first compaction sunken area and the second compaction sunken area obtained in the step nine by soaking sponge or towel;

step eleven, tamping the first compaction concave area, tamping the cylinder rigid punch head with the geometric shape outline at the bottom in the first compaction concave area along the outline of the first compaction concave area, and successively and regularly tamping the first compaction concave area by hammering the cylinder rigid punch head to ensure that the first compaction concave area presents the tamping imprint of the cylinder rigid punch head with the geometric shape outline, wherein the region covered by the tamping imprint is lower than the front surface of the cowhide in the step two, and an intersection region exists between the adjacent tamping imprints;

the cylinder steel punch head with the geometric shape outline at the bottom is shown in figures 8-11, the geometric shape of the bottom of the cylinder steel punch head is shown in figure 8 to be a smooth surface shape, the geometric shape of the bottom of the cylinder steel punch head is shown in figure 9 to be a pockmark shape, the geometric shape of the bottom of the cylinder steel punch head is shown in figure 10 to be a linear shape, the geometric shape of the bottom of the cylinder steel punch head is shown in figure 11 to be a reticulate pattern, and different geometric shapes of the cylinder steel punch heads are selected, so that a tamping stamp with the geometric shape outline can be presented in the first compaction recess area.

Because the back of the cowhide is subjected to shaping treatment in advance in the first step, the shape of the cowhide cannot be extended and deformed by tamping.

Step twelve, tamping the second compaction concave area, tamping the cylinder rigid punch head with the geometrical outline at the bottom of the cylinder rigid punch head along the outline of the second compaction concave area and in the second compaction concave area successively and regularly by hammering the cylinder rigid punch head to the second compaction concave area, so that a tamping mark of the cylinder rigid punch head with the geometrical outline is presented in the second compaction concave area, the area covered by the tamping mark is lower than the front surface of the cow leather in the step two, and an intersection area exists between the adjacent tamping marks; as shown in fig. 16-17.

The first tamping stamp and the second tamping stamp are in a cross region, the second tamping stamp is hammered to make the water in the cross region diffuse from the ramming region to the periphery, after the second tamping stamp is completed, the first tamping stamp and the second tamping stamp are in wetting and wetting states, and the water flows into the ramming region through the cross region, so that the water flows into the ramming region, and the water flows into the ramming region. And a good foundation is laid for the subsequent carving decorative area working procedure.

Step thirteen, correcting the first compacted concave area and the second compacted concave area after tamping;

observing the first compacted concave region and the second compacted concave region after tamping by naked eyes, and correcting the parts with obvious unevenness in the two regions, namely continuing the cylinder rigid punch head with the geometric shape outline at the bottom adopted in the step twelve and the step thirteen to tamp the parts with obvious unevenness in the first compacted concave region and the second compacted concave region into tamping marks in a local range;

secondly, the first compacted concave area and the second compacted concave area after being compacted are touched by the finger belly in a sliding mode, the contact area of each tamping mark and the finger belly is sensed by the skin, no obvious sliding resistance exists between the finger belly and each tamping mark, the first compacted concave area and the second compacted concave area after being corrected are qualified, and the post-processing standard is met.

The first compacted concave area, the second compacted concave area and the highlighted area after correction form a distinct concave-convex layering sense, so that the three-dimensional effect of the shape of the highlighted area is further highlighted; as shown in fig. 17.

Step fourteen, wetting the tamping imprints of the first compacting sunken area and the second compacting sunken area, and wiping the tamping imprints in the step eleven, the step twelve and the step thirteen by dipping sponge or towel;

fifthly, carving a decorative area on the chisel, on the basis of the thirteenth step, adopting a rigid cylinder chisel of which the bottom cutting edge is V-shaped, wherein the blade of the V-shaped cutting edge of the rigid cylinder chisel is a blunt blade, and by hammering the handle part of the rigid cylinder chisel, the V-shaped cutting edge of the rigid cylinder chisel carves the covered tamping prints of the first compacting sunken area and the second compacting sunken area, so that a V-shaped groove is formed on the tamping print, cowhide at the V-shaped groove is extruded to two sides of the V-shaped cutting edge of the rigid cylinder chisel, under the prewetting of the fourteenth step, the hammering force generated by hammering the handle part of the rigid cylinder chisel is transmitted to the V-shaped cutting edge of the rigid cylinder chisel, namely a V-shaped groove is formed on the tamping print, and the lowest part of the V-shaped groove, namely, the corresponding fibrous tissue below the cowhide is extruded and deformed;

meanwhile, the moisture wetted by the groove part in the V-shaped shape is extruded and filled to the area covered by the tamping stamp by the rigid column chisel, and simultaneously the tamping stamp is filled, so that the area covered by the tamping stamp has no stamp;

the handle part of the rigid cylinder chisel is beaten successively, so that the end points of the adjacent V-shaped grooves are connected to form a regular and/or irregular geometric figure unit; the tamping seal impression in the geometric figure unit is fully filled; the decorative area composed of a plurality of geometric figure units can be obtained by repeating the steps, and the flatness of the first compaction sunken area and the second compaction sunken area is further ensured.

The structure of the decorative area is like the ground of a dry riverbed, ground cracks are like V-shaped grooves in the embodiment, and local ground units sealed into a closed loop by the ground cracks are like geometric figure units in the embodiment;

or, more vividly, the structure of the decoration area is similar to that of Ru porcelain, namely a natural cracking phenomenon of the glaze surface of porcelain, also called crack glaze. The V-shaped grooves in this embodiment approximate cracks in the crack glaze, and the geometric cells in the embodiment approximate the glaze surrounded by cracks. The presence of the grooves in turn ensures the flatness of the first and second compacted concave regions. The flatness and smoothness of the local small-area regular or irregular closed loop contour are inconsistent. Meanwhile, tamping imprint left by a tamping area can not be generated in the geometric figure unit, so that cracking defects of the decorative area can not be caused.

When the person skilled in the art is familiar with and presents the structural elements of the same highlighted leather carving picture, it adopts a second manufacturing method, which at least comprises the following steps:

step one, carrying out shaping treatment on the back surface of the cowhide, and adhering the back surface of the cowhide by using an adhesive tape to prevent the contour line of the cowhide breadth from stretching when the first compaction sunken area and/or the second compaction sunken area are/is manufactured;

wetting the front side of the cowhide, adhering the back side of the cowhide by using an adhesive tape, enabling the front side of the cowhide to face upwards, and wiping the front side of the cowhide by using sponge or towel to wet the front side of the cowhide; wetting the front surface thereof with water; wetting with water until a stylus can be used for scribing a trace on the wetted cowhide;

thirdly, carving the boundary lines of the areas, and cutting into fibers of the cowhide skin layer along the mark marks of the pattern contour through a carving knife, so that the pattern contour on the cowhide presents the boundary lines of the cuts of the first compaction sunken area, the convex area and the second compaction sunken area;

step four, wetting the cut boundary, namely wiping the cut boundary obtained in the step three by dipping sponge or towel in water to wet the cut boundary;

step five, dividing the boundary line of the cut, and using a tool with the bottom being an inclined plane, wherein one of a pockmark-shaped pattern, a linear pattern, a reticulate pattern or a plane pattern is arranged on the inclined plane of the bottom of the tool; the inclined plane of the tool faces the first compaction sunken area or the second compaction sunken area, the end part of the handle of the tool with the inclined plane at the bottom is beaten successively along the boundary line of the cut, and meanwhile, the nicking tool is moved along the direction of the boundary line of the cut to divide the boundary line of the cut until the tool with the inclined plane at the bottom is divided along the boundary line of the cut; the outline of the first compaction sunken area or the second compaction sunken area is extruded by a tool with an inclined plane at the bottom after being beaten, so that an obvious three-dimensional inclined plane is formed on the outline of the first compaction sunken area or the second compaction sunken area, and the three-dimensional inclined plane presents one of a spotted pattern, a linear pattern, a reticulate pattern or a planar pattern; simultaneously, chiseling the outline of the highlighted area into a three-dimensional surface which is vertical to or inclined relative to the plane of the cowhide by the back surface of the tool with the bottom being an inclined surface;

as the cut boundary lines are subjected to wetting treatment in the fourth step, in the process of dividing the cut boundary lines, the contour of the convex area is always attached to the convex area on the back surface of the tool with the inclined surface at the bottom in the moving process of the tool with the inclined surface at the bottom, so that the formed three-dimensional surface is smooth and has no fillet, and the three-dimensional effect of forming the three-dimensional surface by carving and chiseling the contour of the convex area is obviously improved;

wetting the first compaction concave area and the second compaction concave area, and wiping the first compaction concave area and the second compaction concave area obtained in the fifth step by soaking sponge or towel in water;

compacting the first compaction concave area, compacting the cylinder rigid punch head with the geometric shape outline at the bottom along the outline of the first compaction concave area and in the first compaction concave area, and gradually and regularly compacting the first compaction concave area by hammering the cylinder rigid punch head to ensure that the first compaction concave area presents the compaction print of the cylinder rigid punch head with the geometric shape outline, wherein the area covered by the compaction print is lower than the front surface of the cowhide in the second step, and an intersection area exists between the adjacent compaction prints;

step eight, tamping a second compaction concave area, tamping the cylinder rigid punch head with the geometric shape outline at the bottom in the second compaction concave area along the outline of the second compaction concave area, and successively and regularly tamping the second compaction concave area by hammering the cylinder rigid punch head to ensure that the second compaction concave area presents the tamping imprint of the cylinder rigid punch head with the geometric shape outline, wherein the region covered by the tamping imprint is lower than the front surface of the cowhide in the step two, and an intersection region exists between the adjacent tamping imprints;

step nine, correcting the first compaction concave area and the second compaction concave area after tamping;

observing the first compacted concave region and the second compacted concave region after tamping by naked eyes, and correcting the parts with obvious unevenness in the two regions, namely continuing the cylinder rigid punch head with the geometric shape outline at the bottom adopted in the seventh step and the eighth step to carry out successive regular tamping on the parts with obvious unevenness in the first compacted concave region and the second compacted concave region in a local range to form tamping marks;

the first compacted concave area, the second compacted concave area and the highlighted area after correction form a distinct concave-convex layering sense, so that the three-dimensional effect of the shape of the highlighted area is further highlighted;

step ten, wetting the tamping imprints of the first compaction concave area and the second compaction concave area, and wiping the tamping imprints of the step seven, the step eight and the step nine by dipping sponge or towel in water;

step eleven, carving a decorative area on a chisel, on the basis of the step eleven, adopting a rigid cylinder chisel of which the bottom cutting edge is V-shaped, wherein the cutting edge of the V-shaped cutting edge of the rigid cylinder chisel is a blunt cutting edge, and hammering the handle part of the rigid cylinder chisel to ensure that the V-shaped cutting edge of the rigid cylinder chisel carves the tamping printing covered by the first compacting sunken area and the second compacting sunken area so as to form a V-shaped groove on the tamping printing, so that cowhide at the V-shaped groove is extruded to two sides of the V-shaped cutting edge of the rigid cylinder chisel, under the pre-wetting of the step eleven, hammering force generated by hammering the handle part of the rigid cylinder chisel is transmitted to the V-shaped cutting edge of the rigid cylinder chisel, namely a V-shaped groove is formed on the tamping printing, and the lowest part of the V-shaped groove, namely, corresponding fibrous tissue below the cowhide is extruded and deformed;

the handle part of the rigid cylinder chisel is beaten successively, so that the end points of the adjacent V-shaped grooves are connected to form a regular and/or irregular geometric unit; the tamping seal impression in the geometric figure unit is fully filled; the decorative area composed of a plurality of geometric figure units can be obtained by repeating the steps, and the flatness of the first compaction concave area and the second compaction concave area is further ensured.

The difference is found by comparing the above two methods: the second method omits the third step in the first method, namely, the film is coated on the master mask pattern; fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step; step five, tracing; step six, performing secondary wetting treatment on the front surface of the cowhide, and describing so far, the method comprises the following steps: the step omitted by the second method is the step omitted by the technical personnel skilled in the art to master the structural elements of the same convex leather carving picture to be carved on the basis of implementing the first method, the omitted step improves the manufacturing efficiency, and the omitted step does not influence the picture quality;

in the step of tamping the first compaction recess region and the second compaction recess region, a cylindrical rigid punch head with a geometric shape outline at the bottom is adopted, and the geometric shape outline of the bottom of the cylindrical rigid punch head is preferably one of a circle or an ellipse because the circle or the ellipse does not have a crossing point of right-angle transition, so that the tamping impression has no stress concentration part in the tamping process, and the tamping impression is filled to disappear in the subsequent manufacturing process.

Example 1

In order that those skilled in the art will clearly understand the concept of the present invention, a flower shown in fig. 18 will now be used to clearly and completely describe the gist of the present invention.

As shown in fig. 18, the outline of the flower is surrounded by a closed-loop cloud line, and the area between the cloud line and the outline of the flower is the first compacted concave area 1. The areas within the outline of the flower are the highlighted area 3, the flower core 7 within the outline of the flower, and the outline areas in the non-flower shaped pattern within the outline of the flower, such as the first strikethrough area 8, the second strikethrough area 9, the third strikethrough area 10, and the fourth strikethrough area 11, which are all distributed within the highlighted area 3, and thus are the second compacted recessed area 2.

As shown in fig. 19, a circular cowhide picture is selected in this embodiment, and when the person skilled in the art cannot grasp and present the structural elements of the same highlighted leather carving picture, the depiction on the cowhide picture is realized through the steps one to six in the first method step. The method comprises the following specific steps:

wetting the front side of the cowhide, adhering the back side of the cowhide picture by using an adhesive tape, enabling the front side of the cowhide picture to face upwards, and wiping the front side of the cowhide picture by using sponge or towel to wet the front side of the cowhide picture by using water; wetting the cowhide painting with water until the cowhide painting can be marked with traces by a stylus;

step three, coating a film on the master plate pattern, coating the master plate pattern with a plastic film on the front and back surfaces of the flower, wherein the flower is shown in figure 18;

fourthly, placing the master mask pattern processed in the third step on the front side of the cowhide picture after the wetting treatment in the second step;

drawing, namely drawing the outline in the master mask pattern on the front side of the cowhide picture by using a stylus along the outline edge of the master mask pattern, taking down the master mask pattern after drawing is finished, and showing mark marks of the outline of the pattern to be engraved on the front side of the cowhide;

after the traces of the outlines of the flower-shaped pattern, the cloud line pattern, the flower center 7 and the non-flower-shaped pattern in the outline of the flower in fig. 18, such as the outlines of the first bottom transparent area 8, the second bottom transparent area 9, the third bottom transparent area 10 and the fourth bottom transparent area 11, are printed on the cowhide canvas as shown in fig. 19, the boundary lines of the engraved areas are realized through the seventh step, which is specifically as follows:

cutting the mark of the pattern contour obtained by drawing in the fifth step into fibers of a leather layer of the cowhide picture along the mark of the pattern contour by using a graver, so that the pattern contour on the cowhide presents the cut boundary lines of a first compaction sunken area, a convex area and a second compaction sunken area;

step eight, wetting the boundary of the cut, namely wiping the boundary of the cut obtained in the step seven by dipping sponge or towel so as to wet the boundary of the cut by water;

step nine, dividing the cut boundary lines, which are represented by the thick solid lines in fig. 20; using a tool with an inclined bottom, wherein a pockmark pattern, a linear pattern, a reticulate pattern or a planar pattern is arranged on the inclined bottom of the tool; as can be seen from fig. 20, the inclined surface of the tool is faced to the first compacting depression area 1, the handle end of the tool with the inclined bottom is successively knocked along the boundary line of the cut, and the nicking tool is moved along the direction of the boundary line of the cut to divide the boundary line of the cut until the tool with the inclined bottom is completely divided along the boundary line of the cut.

Or the inclined plane of the tool faces the second compaction sunken area, the handle end part of the tool with the inclined plane at the bottom is knocked successively along the boundary line of the cut, and meanwhile, the nicking tool is moved along the direction of the boundary line of the cut to divide the boundary line of the cut until the tool with the inclined plane at the bottom is divided along the boundary line of the cut.

The outline of the first compaction sunken area or the second compaction sunken area is extruded by a tool with an inclined plane at the bottom after being beaten, so that the outline of the first compaction sunken area or the second compaction sunken area forms an obvious three-dimensional inclined plane, and the three-dimensional inclined plane presents one of a spotted pattern, a linear pattern, a reticulated pattern or a planar pattern; simultaneously, chiseling the outline of the highlighted area into a three-dimensional surface which is vertical to or relatively inclined with the plane of the cowhide picture frame by the back surface of the tool with the bottom being an inclined surface; the outline of the convex area is vertical to the plane of the cowhide or a three-dimensional surface which is inclined relatively is mainly determined by an included angle formed by the back of the tool with the inclined surface at the bottom and the plane of the cowhide, and when the back of the tool with the inclined surface at the bottom is attached to the plane of the cowhide picture, the edge outline surface of the convex area is vertical to the plane of the cowhide picture; when the tool with the inclined surface at the bottom is inclined to the cow leather drawing plane, namely, an included angle exists between the back surface of the tool with the inclined surface at the bottom and the cow leather plane, the edge contour surface of the convex display area is a three-dimensional surface inclined relative to the cow leather plane, the three-dimensional surface inclined relative to the cow leather plane can be a tangent slope surface mentioned in the background technology or a negative slope surface, so that the three-dimensional effect of the three-dimensional surface is remarkably improved, the negative slope surface cannot be obtained in the prior art, and the technical structural element characteristic of the negative slope surface is convenient to realize the display of a downward curved geometric three-dimensional figure in the actual engraving process, for example: the outermost vegetable leaves of cabbage, which have not been rolled down before coating the cabbage heart; for another example: the lotus flower leaves have large areas, so the edge contours of the flower leaves are also in downward curling shapes; therefore, the three-dimensional effect to be presented by the downward-curling shape is solved through the technical structural element characteristics of the negative slope.

In the present embodiment, the outline of the flower in fig. 20 can be formed into a negative slope surface or a positive slope surface by using a tool having a slope at the bottom and a cowhide picture, and when the negative slope surface is formed, the upper plane of the outline of the flower is large and the lower plane of the outline of the flower is small, so that the three-dimensional effect is prominent as if the flower core petal or flower petal is curled and extended outward.

In the prior art, the slope surface can only become a positive slope surface, and the root part of the slope surface can not be back gouged, so that fillet transition exists.

As the step eight is used for wetting the boundary lines of the notches, in the process of cutting the boundary lines of the notches, the contour of the highlighted area is always attached to the highlighted area on the back surface of the tool with the inclined bottom in the process of moving the tool with the inclined bottom, so that the formed solid surface is smooth and has no round angle, and the solid effect of forming the solid surface by chiseling the contour of the highlighted area is obviously improved;

step ten, wetting the first compaction concave area and the second compaction concave area, and wiping the first compaction concave area and the second compaction concave area obtained in the step nine by soaking sponge or towel with water;

step eleven, tamping the first compaction concave region, namely the area between the cloud line and the outline of the flower in the embodiment is the first compaction concave region.

And (3) successively and regularly tamping the first compacted concave region along the profile of the first compacted concave region by hammering the cylindrical steel punch head, so that the first compacted concave region presents a tamping mark of the cylindrical steel punch head with the profile of the geometric shape, the area covered by the tamping mark is lower than the front surface of the cow leather in the second step, and an intersection area exists between the adjacent tamping marks, as shown in figure 21.

And step twelve, tamping the second compaction concave area, tamping the cylinder rigid punch head with the geometrical outline at the bottom of the cylinder rigid punch head along the outline of the second compaction concave area and in the second compaction concave area by beating the cylinder rigid punch head to tamp the second compaction concave area gradually and regularly, so that the second compaction concave area presents a tamping mark of the cylinder rigid punch head with the geometrical outline, the area covered by the tamping mark is lower than the front surface of the cow leather in the step two, and an intersection area exists between adjacent tamping marks, so far, describing that the flower shape is a convex area.

Step thirteen, correcting the first compaction concave region and the second compaction concave region after tamping;

Furthermore, the regular and/or irregular geometric elements are not limited to the above-described method steps, but may also be generated by predefining the geometry of the bottom V-shaped edge of a rigid cylinder chisel. For example, a geometric figure formed in the bottom V-shaped edge of a rigid cylinder chisel; as shown in fig. 23, the pattern formed in the V-shaped blade is a circle, and after the handle portion of the rigid cylinder chisel is beaten successively, a circle of V-shaped grooves is formed on the tamping stamp, so that the lines of the adjacent V-shaped grooves are tangent to each other to form two regular geometric pattern units, thereby increasing the efficiency of carving the decorative region.

Similarly, the geometric shape of the V-shaped cutting edge at the bottom of the rigid cylinder chisel is predefined to be irregular, a circle of irregular V-shaped grooves are formed in tamping, after the handle part of the rigid cylinder chisel is beaten successively, lines of the adjacent V-shaped grooves are tangent or overlapped to form an intersection area to generate a geometric figure unit, and the efficiency of carving a decorative area by the chisel is improved.

As shown in fig. 22, the decorative region 4 is structured like a dried river bed ground, and ground cracks are like V-shaped grooves in this embodiment. Local ground units blocked into closed loops by ground cracks are like the geometric figure units in the embodiment;

or, more vividly, the structure of the decorative area is similar to that of a Ru porcelain piece, namely a natural cracking phenomenon of a porcelain glaze surface, which is also called crack glaze. The V-shaped grooves in this embodiment approximate cracks in the crack glaze, and the geometric figure units in this embodiment approximate the glaze surrounded by cracks. The presence of the grooves in turn ensures the flatness of the first and second compacted pit regions. Further avoiding the defects of the prior art and ensuring that the flatness and the smoothness of the local small-area regular or irregular closed loop contour are inconsistent. Meanwhile, tamping imprint left by a tamping area can not be generated in the geometric figure unit, so that cracking defects of the decorative area can not be caused.

The method can be mastered after being repeatedly implemented for dozens of times by a person skilled in the art, so the method can be implemented by the second method area of the invention, the third step in the first method is omitted in the second method, and the master plate pattern is coated; fourthly, placing the master mask pattern processed in the third step on the front surface of the cowhide subjected to the wetting treatment in the second step; step five, tracing; sixthly, performing secondary wetting treatment on the front surface of the cowhide, wherein the omitted step improves the manufacturing efficiency, and does not influence the picture quality;

the invention is not limited to the precise arrangements that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. The leather carving picture with the raised display on the cowhide is characterized in that the carving picture with the raised display on the plane of the cowhide is carved on the plane of the cowhide, the carving picture is composed of a plane pattern and/or a three-dimensional pattern, the carving picture with the raised display on the plane of the cowhide at least appears to be composed of four areas on the plane of the cowhide, and the four areas are respectively as follows: on the plane of the cowhide, a first compaction recess region (1), a prominent region (3) presented relative to the first compaction recess region, second compaction recess regions (2) distributed within the prominent region, and decorative regions (4) distributed within the first compaction recess region and/or the second compaction recess region;

the decorative area is provided with a groove (5), a plurality of geometric figure units (6) are formed in the decorative area by arranging the trend of the groove, and the manufacturing method at least comprises the following steps:

wetting the front side of the cowhide, adhering the back side of the cowhide by using an adhesive tape, enabling the front side of the cowhide to face upwards, and wiping the front side of the cowhide by using sponge or towel to wet the front side of the cowhide;

drawing, namely drawing the outline in the master plate pattern on the front surface of the cow leather along the outline edge of the master plate pattern by using a stylus, taking down the master plate pattern after drawing is finished, and marking the outline of the required carving pattern on the front surface of the cow leather;

step six, carrying out secondary wetting treatment on the front side of the cowhide, and wiping the front side of the cowhide by dipping water in a sponge or a towel to wet the front side of the cowhide;

step seven, carving the boundary lines of the areas, cutting the mark print of the pattern contour obtained by tracing in the step five into the fibers of the cowhide skin layer along the mark print of the pattern contour through a graver, and enabling the pattern contour on the cowhide to present the cut boundary lines of the first compaction sunken area, the convex area and the second compaction sunken area;

step nine, dividing the boundary line of the cut, and using a tool with the bottom being an inclined plane, wherein the inclined plane at the bottom of the tool is provided with one of a pockmark-shaped pattern, a linear pattern, a reticulate pattern or a plane pattern; the inclined plane of the tool faces the first compaction concave area or the second compaction concave area, the handle end part of the tool with the inclined plane at the bottom is knocked successively along the boundary line of the cut, and meanwhile, the nicking tool is moved along the direction of the boundary line of the cut to divide the boundary line of the cut until the tool with the inclined plane at the bottom is divided along the boundary line of the cut; the outline of the first compaction sunken area or the second compaction sunken area is extruded by a tool with an inclined plane at the bottom after being beaten, so that the outline of the first compaction sunken area or the second compaction sunken area forms an obvious three-dimensional inclined plane, and the three-dimensional inclined plane presents one of a spotted pattern, a linear pattern, a reticulated pattern or a planar pattern; simultaneously, chiseling the outline of the highlighted area into a three-dimensional surface which is vertical to or inclined relative to the plane of the cowhide by the back surface of the tool with the bottom being an inclined surface;

step ten, wetting the first compacted concave area and the second compacted concave area, and wiping the first compacted concave area and the second compacted concave area obtained in the step nine by soaking sponge or towel with water;

step twelve, tamping the second compaction concave area, tamping the cylinder rigid punch head with the geometric shape outline at the bottom of the cylinder rigid punch head along the outline of the second compaction concave area and in the second compaction concave area, and tamping the second compaction concave area by hammering the cylinder rigid punch head to ensure that the second compaction concave area presents the tamping imprint of the cylinder rigid punch head with the geometric shape outline, wherein the region covered by the tamping imprint is lower than the front surface of the cowhide in the step two, and an intersection region exists between the adjacent tamping imprints;

the first compacted sunken area, the second compacted sunken area and the prominent area after correction form a clear concave-convex hierarchical sense, so that the three-dimensional effect of the prominent area is further highlighted;

fifthly, carving the decorative area by gold chisel, on the basis of the thirteenth step, adopting a rigid cylinder chisel of which the bottom cutting edge is V-shaped, hammering a handle part of the rigid cylinder chisel to ensure that the V-shaped cutting edge of the rigid cylinder chisel carves the tamping printing chisels covered by the first compacting sunken area and the second compacting sunken area to ensure that a V-shaped groove is formed on the tamping printing, transmitting hammering force generated by hammering the handle part of the rigid cylinder chisel to the V-shaped cutting edge of the rigid cylinder chisel under the prewetting of the fourteenth step, and transmitting the hammering force to the instant process of tamping printing by the V-shaped cutting edge of the rigid cylinder chisel to form a V-shaped groove on the tamping printing, wherein the lowest part of the V-shaped groove, namely the fiber tissue under the corresponding cowhide layer is extruded and deformed;

the handle part of the rigid cylinder chisel is beaten successively, so that the end points of the adjacent V-shaped grooves are connected to form a regular and/or irregular geometric figure unit; the tamping seal marks in the geometric figure units are all filled; the decorative area composed of a plurality of geometric figure units can be obtained by repeating the steps, and the flatness of the first compaction concave area and the second compaction concave area is further ensured.

2. The leather carving picture on cowhide with prominence according to claim 1, characterized in that the geometric figure unit (6) is provided with geometric patterns.