Automatic material breaking mechanism of sewing machine

Abstract

The utility model discloses an automatic material breaking mechanism of a sewing machine, which comprises an air cylinder, a connecting plate connected with a telescopic shaft of the air cylinder, a knife handle fixing plate mounted at the bottom of the connecting plate, a lower limiting block mounted on one side of the connecting plate, and an upper limiting block mounted on the side wall of the air cylinder at the upper end of the lower limiting block. At least one guide column is arranged between the upper limiting block and the lower limiting block in a sleeved mode, the lower end of the guide column is fixedly connected with the lower limiting block, the upper end of the guide column penetrates out of the upper limiting block, a knife handle is installed on the knife handle fixing plate, and a blade is installed at one end of the knife handle. The sewing machine is simple in structure, capable of synchronously breaking materials in the material sewing process, high in machining speed and high in automation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to an automatic material breaking mechanism for a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewn together. A sewing machine can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products such as leather, plastic, and paper. The stitches are neat, beautiful, flat, and firm, and the sewing speed is fast and easy to use.

[0003] Sewing machines use two sewing needles that work side by side. Depending on the needs, it is sometimes necessary to cut the material between the two sewing needles, which is also called breaking. It mainly divides the material into two independent parts. The above materials include cloth, leather and other materials. In existing sewing machines, the material cutting process is generally completed by scissors or other knives after sewing is completed. It cannot be completed automatically and synchronously with the sewing process, and the processing speed is slow and the degree of automation is low. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides an automatic material breaking mechanism for a sewing machine, which has a simple structure and can simultaneously complete the breaking process during the sewing process, has a fast processing speed and a high degree of automation.

[0005] A sewing machine material automatic breaking mechanism comprises a cylinder and a connecting plate connected to a telescopic shaft of the cylinder, a knife handle fixing plate is installed at the bottom of the connecting plate, a lower limit block is installed on one side of the connecting plate, an upper limit block is installed on the side wall of the cylinder located at the upper end of the lower limit block, at least one guide column is sleeved between the upper limit block and the lower limit block, the lower end of the guide column is fixedly connected to the lower limit block, the upper end of the guide column passes through the upper limit block, a knife handle is installed on the knife handle fixing plate, and a blade is installed at one end of the knife handle.

[0006] In some embodiments, a longitudinally extending blade groove is provided at one end of the blade handle, and a blade is inserted into the blade groove. The blade can move in the blade groove and adjust the distance from the horizontal plane. A blade fixing hole connected to the blade groove is provided on one side of the blade handle, and a blade fastener inserted into the blade fixing hole is used to lock the blade.

[0007] In some embodiments, the blade is inserted into the blade groove at an angle, and the angle between the blade edge and the horizontal plane is an acute angle.

[0008] In some embodiments, a longitudinally through-going knife handle socket is provided at one end of the knife handle fixing plate, and the knife handle can move in the knife handle socket and adjust the distance between the knife handle and the horizontal plane. A knife handle fixing hole connected to the knife handle socket is provided on one side of the knife handle fixing plate, and a knife handle fastener inserted in the knife handle fixing hole is used to lock the knife handle.

[0009] In some embodiments, at least one elongated adjustment hole is opened at the other end of the handle fixing plate, a connecting hole is opened on the connecting plate, and connecting plate fasteners are inserted into the adjustment hole and the connecting hole to fasten the connecting plate and the handle fixing plate together.

[0010] In some embodiments, a first cylinder fixing plate is installed on one side wall of the cylinder, and a second cylinder fixing plate is installed on one side of the first cylinder fixing plate. The first cylinder fixing plate and the second cylinder fixing plate are vertically installed through a connecting block, and a through elongated adjustment groove is opened on the connecting block.

[0011] In some embodiments, the telescopic shaft and guide column of the cylinder are both in pairs and are arranged side by side, and the two guide columns and the upper limit block are sleeved together in a linearly slidable manner.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present application;

[0015] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present application;

[0016] Figure 3 It is a side structural schematic diagram of the present application;

[0017] Figure 4 It is a schematic diagram of the split structure of this application.

[0018] Reference numerals:

[0019] Cylinder 1, telescopic shaft 100;

[0020] Connecting plate 2, connecting hole 200, connecting plate fastener 201;

[0021] The handle fixing plate 3, the handle insertion hole 300, the handle fixing hole 301, the handle fastening

[0022] Part 302, adjustment hole 303;

[0023] Lower limit block 4, upper limit block 5, guide column 6;

[0024] The knife handle 7, the knife groove 700, the blade fixing hole 701, and the blade fastener 702;

[0025] Blade 8;

[0026] The first cylinder fixing plate 9, the second cylinder fixing plate 900, the connecting block 901, the adjusting

[0027] Joint groove 902 and screw connection 903. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Reference Figure 1-Figure 4A sewing machine material automatic breaking mechanism comprises a cylinder 1, a connecting plate 2 connected to a telescopic shaft 100 of the cylinder 1, a knife handle fixing plate 3 is stacked and installed at the bottom of the connecting plate 2, a lower limit block 4 is installed side by side on the rear side wall of the connecting plate 2, an upper limit block 5 is installed on the side wall of the cylinder 1 located at the upper end of the lower limit block 4, and the two are arranged in parallel, at least one guide column 6 is sleeved between the upper limit block 5 and the lower limit block 4, the lower end of the guide column 6 is fixedly connected to the lower limit block 4, and the upper end of the guide column 6 passes through the upper limit block 5, and the two can be slidably sleeved, a knife handle 7 is installed on the knife handle fixing plate 3, and a blade 8 is installed at one end of the knife handle 7.

[0033] When in use, the cylinder 1 is connected and fixed to the head of the sewing machine. When working, the cylinder 1 can drive the telescopic shaft 100 and the connecting plate 2 fixed thereto to move linearly up and down; when the connecting plate 2 moves, the lower limit block 4 and the guide column 6 fixed and vertically connected thereto move synchronously, and the guide column 6 moves along the middle hole opened in the upper limit block 5 or the sleeve installed in the middle hole; when the connecting plate 2 moves, the handle fixing plate 3, the handle 7 and the blade 8 also move linearly synchronously; the material is generally laid flat on the work surface, and two sewing needles arranged side by side are used to sew both sides of the material, and the blade 8 is located in the middle between the two sewing needles; when the blade 8 moves downward, the sharp blade will cut the material, and in the process of the material being pressed and moving straight along the work surface, the material will be automatically cut into two parts by the blade 8 while being sewn. The present application has a simple structure and a reasonable design, and can simultaneously complete the breaking process during the process of sewing the material, with a fast processing speed and a high degree of automation.

[0034] In some embodiments, a longitudinally through-going knife groove 700 is provided at one end of the knife handle 7, and the blade 8 is inserted into the knife groove 700. The blade 8 can move in the knife groove 700 and adjust the distance between it and the horizontal plane, that is, adjust the distance between the blade 8 and the material, so that it can be suitable for installing blades 8 of various specifications, and the adjustment is convenient; a blade fixing hole 701 connected to the knife groove 700 is provided on one side of the knife handle 7, and a blade fastener 702 inserted in the blade fixing hole 701 is used to lock the blade 8, and installation and disassembly are more convenient.

[0035] In some embodiments, the blade 8 is inserted into the blade groove 700 at an angle, and the angle between the blade edge of the blade 8 and the horizontal plane is an acute angle, which makes it easier to cut the material.

[0036] In some embodiments, a longitudinally through-going handle socket 300 is provided at one end of the handle fixing plate 3. The handle socket 300 is a non-circular hole and may be a through hole of a square or other shape to prevent the handle 7 from slipping and rotating. The handle 7 can move up and down in the handle socket 300 and adjust the distance with the horizontal plane, so as to be suitable for tools of different specifications and working scenes. A handle fixing hole 301 connected to the handle socket 300 is provided on one side of the handle fixing plate 3. A handle fastener 302 inserted in the handle fixing hole 301 is used to lock the handle 7, so that installation and disassembly are more convenient.

[0037] In some embodiments, two symmetrical adjustment holes 303 are provided at the other end of the handle fixing plate 3, which are elongated, and two connecting holes 200 are correspondingly provided on the connecting plate 2, which are through holes. Connecting plate fasteners 201 are inserted into the adjustment holes 303 and the connecting holes 200 to fasten the connecting plate 2 and the handle fixing plate 3 together; the handle fixing plate 3 can move linearly left and right through the two adjustment holes 303, so as to adjust the position of the handle fixing plate 3 and the blade 8 relative to the material, and then fix it with the connecting plate fasteners 201, which is convenient and flexible.

[0038] In some embodiments, a first cylinder fixing plate 9 is installed on one side wall of the cylinder 1, and a second cylinder fixing plate 900 is installed on one side of the first cylinder fixing plate 9, which is L-shaped. The first cylinder fixing plate 9 and the second cylinder fixing plate 900 are vertically installed through a connecting block 901. The second cylinder fixing plate 900 can be connected through a guide rod and a guide sleeve sliding assembly, and one end of the guide rod is fixedly connected to the main body of the sewing machine. This structural design can further prevent the cylinder 1 from swinging and improve stability. A through-long adjustment groove 902 is opened on the connecting block 901, and the relative position between the two can be adjusted through the adjusting groove 902. A screw connection 903 is screwed into the adjusting groove 902 for fixing.

[0039] In some embodiments, the telescopic shaft 100 and the guide column 6 of the cylinder 1 are both in pairs and are arranged side by side, which can improve the stability of operation and the working accuracy. The two guide columns 6 and the upper limit block 5 can be linearly slidably sleeved together.

[0040] The above-mentioned blade fastener 702, handle fastener 302, connecting plate fastener 201 and other fasteners may be threaded connectors such as bolts, screws and the like.

[0041] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the utility model have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. An automatic material breaking mechanism for a sewing machine, comprising a cylinder and a connecting plate connected to a telescopic shaft of the cylinder, characterized in that: A tool handle fixing plate is installed at the bottom of the connecting plate, a lower limit block is installed on one side of the connecting plate, an upper limit block is installed on the side wall of the cylinder located at the upper end of the lower limit block, at least one guide column is sleeved between the upper limit block and the lower limit block, the lower end of the guide column is fixedly connected to the lower limit block, the upper end of the guide column passes through the upper limit block, a tool handle is installed on the tool handle fixing plate, and a blade is installed on one end of the tool handle.

2. The automatic material breaking mechanism for a sewing machine as claimed in claim 1, characterized in that: A longitudinally penetrating knife groove is provided at one end of the knife handle, and a blade is inserted into the knife groove. The blade can move in the knife groove and adjust the distance between the blade and the horizontal plane. A blade fixing hole connected to the knife groove is provided on one side of the knife handle, and a blade fastener inserted into the blade fixing hole is used to lock the blade.

3. The automatic material breaking mechanism for a sewing machine as claimed in claim 2, characterized in that: The blade is inserted into the blade groove at an angle, and the angle between the blade edge and the horizontal plane is an acute angle.

4. The automatic material breaking mechanism for a sewing machine as claimed in claim 1 or 2, characterized in that: A longitudinally penetrating knife handle insertion hole is provided at one end of the knife handle fixing plate, and the knife handle can move in the knife handle insertion hole and adjust the distance between the knife handle and the horizontal plane. A knife handle fixing hole connected to the knife handle insertion hole is provided on one side of the knife handle fixing plate, and a knife handle fastener is inserted in the knife handle fixing hole to lock the knife handle.

5. The automatic material breaking mechanism for a sewing machine as claimed in claim 4, characterized in that: At least one long adjustment hole is opened at the other end of the knife handle fixing plate, and a connecting hole is opened on the connecting plate. Connecting plate fasteners are inserted into the adjustment hole and the connecting hole to fasten the connecting plate and the knife handle fixing plate together.

6. The automatic material breaking mechanism for a sewing machine as claimed in claim 5, characterized in that: A first cylinder fixing plate is installed on one side wall of the cylinder, a second cylinder fixing plate is installed on one side of the first cylinder fixing plate, the first cylinder fixing plate and the second cylinder fixing plate are vertically installed via a connecting block, and a through long adjustment groove is opened on the connecting block.

7. The automatic material breaking mechanism for a sewing machine as claimed in claim 1, characterized in that: The telescopic shaft and guide column of the cylinder are both arranged in pairs and side by side, and the two guide columns are sleeved together with the upper limit block in a linearly sliding manner.

Images