A jacquard weaving method

Abstract

The invention discloses a large jacquard weaving method, comprising the following steps: step one, designing and assembling; step two, determining the actual number of thread strands; step three, calculating the empty needle ratio; step four, making a sample card; step five, making a pattern plate; step six, drawing in the harness and reed; in the step three, for products with different hangers, empty needles can be used without changing the number of hangers, so that two hangers are combined into one hanger, and the specific method is: if the number of empty needles is more than half, the odd and even numbers of the original thread strands are marked separately, the odd numbers are area a, the even numbers are area b, and the two areas a and b are evenly treated with empty needles; the invention improves the existing assembly process, and proposes an assembly method for the maximum number of thread strands when designing and assembling, so that when switching products with different warp densities or different hangers, the machine modification can be completed simply and quickly, the machine modification process is greatly reduced, the machine modification cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a jacquard weaving method. Background Art

[0002] The textile industry is a traditional industry in my country. The country has vigorously developed the textile industry and introduced many advanced textile equipment. In particular, the popularity of jacquard machines has made the product colors more colorful and met the personalized consumer needs. At present, jacquard products have become the mainstream of woven products, and the supporting equipment and technology are becoming more and more mature. In the existing technology, the method of weaving jacquard products is: according to the product process requirements, loom width, tap needle number and height and other factors, the number of hangings, hanging methods and pattern plate width, etc., as well as the subsequent supporting drawing and reeding work, according to the different process products The installation and manufacturing processes involved are different, and a series of work such as installation, hanging, drawing and reeding need to be redone. The whole process of replacing the installation and changing the process is collectively referred to as machine modification. Since the machine modification processes are relatively numerous and complicated, the cost of machine modification is high and the downtime is long, the cost of replacing products with different processes is very high. As the market changes faster and faster, the order volume is getting smaller and smaller, and the number of machine modifications is increasing, the high cost of machine modification and frequent downtime make it increasingly difficult for factories to bear. Therefore, there is an urgent need for a large jacquard weaving method with fewer machine modification processes, low cost of machine modification, simple operation, and applicable to different product processes. Summary of the invention

[0003] The object of the present invention is to provide a jacquard weaving method to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a jacquard weaving method, comprising the following steps: step one, designing and assembling; step two, determining the actual number of harness threads; step three, calculating the empty needle ratio; step four, making a sample card; step five, making a pattern plate; step six, drawing in the heddle and reed;

[0005] In the above step 1, for products with different warp densities, when designing and installing the jacquard machine, the number of harness threads is determined according to the highest warp density of the fabric produced;

[0006] In the above step 2, the number of harnesses used is calculated according to the actual warp density of the fabric to be produced;

[0007] In the above step 3, the surplus harness in the above step 2 is treated with uniform empty needles, and the proportion of the number of empty needles is calculated as follows: the number of harness roots n per hanging minus the actual number of used roots n', to find out how many empty needles n0 are needed, and then the number of empty needles n0 is divided by the number of harness roots n, and the integer is taken to get the proportion of uniform empty needles;

[0008] In the above step 4, according to the ratio obtained in the above step 4, the designed pattern is designed by weaving CAD software to produce a sample card;

[0009] In the above step 5, the sample card produced in the above step 5 is processed with a pattern plate to obtain a pattern plate file;

[0010] In the above step six, the pattern card file is imported into the jacquard machine, the jacquard machine is started, the used needles are lifted up, the empty needles are lowered, and the lifted heald threads are threaded through the heald and reed.

[0011] Preferably, in the step 2, the total number of thread bundles = the number of thread bundles × the number of threads in each bundle, the number of thread bundles under a vertical needle is equal to the number of pattern cycles, and the symmetrical pattern should be multiplied by 2. The thread bundles hung under a vertical needle are twisted into bundles, then the number of thread bundles = the number of vertical needles = pattern width × warp density = the number of warp yarns in the cloth body / the number of pattern cycles.

[0012] Preferably, in the step three, in actual production, in order to facilitate operation, the number of harness threads must be an even number, so the odd number of empty needles needs to be doubled.

[0013] Preferably, in step three, for products with different handles, empty needles can be used without changing the number of handles, so that two handles can be combined into one. The specific method is: if the number of empty needles is more than half, the odd and even numbers of the original thread are marked separately, with odd numbers as area a and even numbers as area b, and areas a and b are evenly treated with empty needles.

[0014] Preferably, in step 4, the specific steps of making a sample card are: pattern editing, design coloring, modifying the design drawing, establishing organization, generating a shuttle file, determining the organization configuration table and designing a sample card.

[0015] Preferably, in step 5, the pattern card processing needs to select a specific weaving file format according to the model of the jacquard machine faucet, and the suffix of the pattern card file is selected as the file type of "WB".

[0016] Preferably, in the step six, when threading the products with different hooks, the needles of the two areas ab need to lift the healds separately, that is, first lift the needle of area a, and drop the whole area b, then lift the needle of area b, and drop the whole area a; when the needle of area a is lifted, the first, third, and fifth hooks are threaded, and when the needle of area b is lifted, the second, fourth, and sixth hooks are threaded, so that the first hook and the second hook are threaded with different healds; when drawing, area a and area b are combined to draw one picture, the patterns woven by the two hooks are different, and they are combined together into a completed large picture, achieving the effect of three hooks.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention improves the existing assembly process and proposes an assembly method with the maximum number of threads when designing and assembling, so that when switching products with different warp densities or different handles, the machine modification can be completed simply and quickly, which greatly reduces the machine modification process and reduces the machine modification cost, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 The present invention provides an embodiment: a jacquard weaving method, comprising the following steps: step one, designing and assembling; step two, determining the actual number of harness threads; step three, calculating the empty needle ratio; step four, making a sample card; step five, making a pattern plate; step six, drawing in the heddle and reed;

[0021] In the above step 1, for products with different warp densities, when designing and installing the jacquard machine, the number of harness threads is determined according to the highest warp density of the fabric produced;

[0022] In the above step 2, the number of harness threads used is calculated according to the actual warp density of the fabric to be produced; wherein, the total number of harness threads = the number of harness threads × the number of threads in each bundle, the number of harness threads under a vertical needle is equal to the number of pattern cycles, and the symmetrical pattern should be multiplied by 2, and the harness threads hung under a vertical needle are twisted into bundles, then the number of harness threads = the number of vertical needles = the pattern width × the warp density = the number of warp yarns in the cloth body / the number of pattern cycles;

[0023] In the above step 3, the surplus wires in the above step 2 are treated with uniform empty needles, and the ratio of the number of empty needles is calculated as follows: the number of wires n per hanging minus the actual number of wires used n', to find out how many empty needles n0 are needed, and then the number of empty needles n0 is divided by the number of wires n, and the ratio of uniform empty needles is obtained; for example, the number of wires per hanging is 1000, the actual number of wires used is 800, and 200 empty needles are obtained. The least common multiple of n and n0 is found, and the least common multiple of 1000:200 is 5:1, that is, 5 needles are used and 1 needle is empty; and In actual production, for the convenience of operation, the number of thread strands must be an even number, so the number of empty needles of the odd number needs to be doubled, that is, 10 needles are used and 2 empty needles are used; for products with different handles, empty needles can be used to combine two handles into one without changing the number of handles. The specific method is: if the empty needles are more than half, mark the odd and even numbers of the original thread strands separately, the odd numbers are area a, the even numbers are area b, and the two areas a and b are treated with even empty needles; for example: the installed thread strands are 2688 needles per strand and six straight threads, each strand is 42cm, and the warp density is 64 strands / cm. The machine needs to be changed to a bath towel product, each width is 84cm, and the warp density is 28 / cm; the original thread strands per strand n is 2688, and the density required for the changed machine is 28 / cm. The actual number of needles n' is 1176 needles, so the empty needles are more than half, so this method can be used;

[0024] In the above step 4, according to the ratio obtained in the above step 4, the designed pattern is designed by the weaving CAD software to produce a sample card; wherein the specific steps of producing the sample card are: pattern editing, design coloring, modifying the design drawing, establishing the organization, generating the shuttle file, determining the organization configuration table and designing the sample card;

[0025] In the above step 5, the sample card produced in the above step 5 is processed with a pattern plate to obtain a pattern plate file; the pattern plate processing needs to select a specific weaving file format according to the model of the jacquard machine faucet, and the suffix of the pattern plate file is selected as the file type of "WB";

[0026] In the above step six, the pattern card file is imported into the jacquard machine, the jacquard machine is started, the used needles are lifted up, the empty needles are dropped down, and the lifted healds are threaded into the healds and reeds; when threading the healds for products with different hooks, the needles in the two areas a and b need to be lifted up separately, that is, the needles in the area a are lifted up first, and the area b is fully dropped, and then the needles in the area b are lifted up, and the area a is fully dropped; when the needles in the area a are lifted up, the first, third, and fifth hooks are threaded, and when the needles in the area b are lifted up, the second, fourth, and sixth hooks are threaded, so that the first hook and the second hook are threaded with different healds; when drawing, the area a and the area b are combined to draw a picture, and the patterns woven by the two hooks are different, and they are combined together into a completed large picture, achieving the effect of three hooks.

[0027] Based on the above, the advantage of the present invention is that the invention introduces the concept of empty needles. The specific principle is: when designing the structure, the highest warp density in the fabric to be produced is considered. When making the structure, there is a surplus of wire threads. In this way, when producing products with low warp density, it is only necessary to evenly empty a part of the wire threads. This method is simple to operate and has few machine modification steps. It can be applied to products with different warp densities or products with different handles. It can meet the switching of small and large flower-shaped products without changing the structure, thereby effectively improving production efficiency.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A jacquard weaving method, comprising the following steps: Step 1: design and manufacture; Step 2: determine the actual number of harness threads; Step 3: calculate the empty needle ratio; Step 4: make a sample card; Step 5: make a pattern plate; Step 6: draw in the heald and reed; it is characterized by: In the above step 1, for products with different warp densities, when designing and installing the jacquard machine, the number of harness threads is determined according to the highest warp density of the fabric produced; In the above step 2, the number of harnesses used is calculated according to the actual warp density of the fabric to be produced; In the above step 3, the surplus harness in the above step 2 is treated with uniform empty needles, and the proportion of the number of empty needles is calculated as follows: the number of harness roots n per hanging minus the actual number of used roots n', to find out how many empty needles n0 are needed, and then the number of empty needles n0 is divided by the number of harness roots n, and the integer is taken to get the proportion of uniform empty needles; In the above step 4, according to the ratio obtained in the above step 4, the designed pattern is designed by weaving CAD software to produce a sample card; In the above step 5, the sample card produced in the above step 5 is processed with a pattern plate to obtain a pattern plate file; In the above step 6, the pattern card file is imported into the jacquard machine, the jacquard machine is started, the used needles are raised, the empty needles are lowered, and the raised healds are threaded into the healds and reeds; In the step 2, the total number of harness threads = the number of harness threads × the number of threads in each bundle. The number of harness threads under a vertical needle is equal to the number of pattern cycles. The symmetrical pattern should be multiplied by 2. The harness threads hung under a vertical needle are twisted into bundles. The number of harness threads = the number of vertical needles = the pattern width × the warp density = the number of warp yarns in the cloth body / the number of pattern cycles. In the step 3, in actual production, in order to facilitate operation, the number of harness threads must be an even number, so the number of odd-numbered empty needles needs to be doubled; In the step 3, for products with different handles, without changing the number of handles, empty needles are used to combine two handles into one, and the specific method is: if the empty needles are more than half, the odd and even numbers of the original harness are marked separately, the odd numbers are area a, the even numbers are area b, and the two areas a and b are evenly treated with empty needles; In the step 4, the specific steps of making the sample card are: pattern editing, design coloring, modifying the design drawing, establishing organization, generating shuttle files, determining the organization configuration table and designing the sample card; In the step 5, the pattern card processing needs to select a specific weaving file format according to the model of the jacquard machine faucet, and the suffix of the pattern card file is selected as the file type of "WB"; In the step six, when threading the heddle for products with different hooks, the needles in areas a and b need to be lifted separately, that is, the needles in area a are lifted first, and area b is completely dropped, and then the needles in area b are lifted, and area a is completely dropped; when the needles in area a are lifted, the first, third, and fifth hooks are threaded, and when the needles in area b are lifted, the second, fourth, and sixth hooks are threaded, so that the first hook and the second hook are threaded with different heddle wires; when drawing, area a and area b are combined to draw one picture, and the patterns woven by the two hooks are different, and they are combined together to form a completed large picture, achieving the effect of three hooks.

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