CN110670250A

CN110670250A - Cylindrical sewing jig capable of being assembled and disassembled quickly

Info

Publication number: CN110670250A
Application number: CN201810710073.8A
Authority: CN
Inventors: 陈旭辉
Original assignee: Qixiang Needle Car (shanghai) Co Ltd; Chee Siang Industrial Co Ltd
Current assignee: Qixiang Needle Car (shanghai) Co Ltd; Chee Siang Industrial Co Ltd
Priority date: 2018-07-02
Filing date: 2018-07-02
Publication date: 2020-01-10

Abstract

The invention relates to a rapidly detachable cylindrical sewing jig which comprises a driving feeding barrel and a replacing barrel with a sewing pattern clamp, wherein the replacing barrel is assembled and connected to the driving feeding barrel along a first direction of a forward central shaft, the driving feeding barrel is provided with a fastener and a rotating piece, the fastener keeps the replacing barrel and the driving feeding barrel in a clamping state, and the rotating piece can rotate to drive the fastener to be converted from the clamping state into a separation state, so that the replacing barrel can be separated from the driving feeding barrel along a second direction opposite to the central shaft. Therefore, the user can assemble or disassemble the replacement cylinder only through pushing, rotating and other bare-handed actions without using tools, and the standby time of the sewing machine for replacing the replacement cylinder is shortened.

Description

Cylindrical sewing jig capable of being assembled and disassembled quickly

Technical Field

The invention relates to a cylindrical jig suitable for sewing circular arc surfaces such as hat edges or trouser leg patterns, in particular to a cylindrical sewing jig which can be quickly assembled and disassembled on a computer-controlled sewing machine without using tools.

Background

Traditionally, various circular-arc-surface sewed articles such as cylindrical leather, trouser legs, hat rims and the like are sewed, a cylindrical Machine base is mainly arranged on one side of a Machine base body of a sewing Machine in a protruding mode, and the Machine base is generally called a cylindrical base sewing Machine (Cylinder BedSewing Machine).

The machine table of general cylindrical base sewing machine includes rectangular box-shaped machine table portion and cylindrical portion projected from machine table portion, on the cylindrical portion a needle plate is set, and is correspondent to the machine needle of front end of sewing machine arm, and in the cylindrical portion a feed tooth capable of moving forward and backward is set, and its feed tooth groove is set, and in the front and rear of needle-falling hole of the needle plate a hook-and-loop device and a drive mechanism are set, and the described hook-and-loop device and machine needle can be combined together and acted to form stitch, and the described drive mechanism is used for driving the described feed tooth which can be moved forward and backward.

The tubular bed sewing machine is only suitable for sewing around a circumference stitch because the feeding direction is fixed, and is inconvenient to operate or even impossible to implement if the tubular bed sewing machine is applied to sewing products with zigzag stitches or curve patterns.

In recent years, the computer control drive is developed and widely applied to automatic sewing machines, and a cylindrical sewing machine controlled by a computer can simultaneously carry out two-axis control feeding of circumferential direction rotation and axial movement, so that the curve pattern sewing on the cylindrical surface is realized; however, since the cylindrical or arc-shaped sewn product is less likely to be gripped than a generally flat sewn product and it takes a long time to replace the sewn product, it is still a subject to be improved how to shorten the time for replacing the sewn product by stopping the tubular sewing machine.

Disclosure of Invention

To solve the above technical problems, the present invention aims to: to provide a cylindrical sewing jig which can be quickly attached to and detached from a computer-controlled sewing machine without using a tool, and which enables a user to assemble or separate a replacement cylinder to a drive feed cylinder by moving, rotating, or the like, thereby shortening the standby time of the sewing machine in replacing the replacement cylinder.

The secondary purpose of the invention is to quickly align and assemble the feeding cylinder and the replacing cylinder, and the assembling and disassembling actions of the sewing jig can be completed by holding the replacing cylinder, so that a user can easily use the sewing jig.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a cylindrical sewing jig capable of being quickly assembled and disassembled comprises a driving feeding barrel and a replacing barrel with a sewing pattern clamp, wherein the replacing barrel is assembled and connected to the driving feeding barrel along a first direction of a forward central shaft, the driving feeding barrel is provided with a plurality of fasteners and a rotating piece, the fasteners keep the replacing barrel and the driving feeding barrel in a clamping state, and the rotating piece can rotate to drive the fasteners to be converted from the clamping state into a separation state, so that the replacing barrel can be separated from the driving feeding barrel along a second direction opposite to the central shaft.

The cylindrical sewing jig capable of being assembled and disassembled quickly is characterized in that a guide device is arranged between the rotating piece and the replacing cylinder, so that the replacing cylinder and the driving feeding cylinder can be assembled and connected quickly in a contraposition mode, and the replacing cylinder can synchronously drive the rotating piece to rotate and displace when rotating along the central shaft.

The guide device comprises a guide groove arranged on the replacement cylinder and a positioning guide block arranged on the driving feeding cylinder, the positioning guide block is provided with a fixed blocking piece and a movable blocking piece arranged at an interval with the fixed blocking piece, and the movable blocking piece can be pushed by the rotation of the replacement cylinder and is close to the fixed blocking piece.

The cylindrical sewing jig capable of being assembled and disassembled quickly is characterized in that the driving feeding barrel is provided with a limiting hook which is clamped and abutted against the rotating piece, so that the rotating piece is in a limiting state incapable of rotating, and the limiting hook can be separated from the rotating piece by being pushed along the first direction by the replacing barrel, so that the rotating piece is in a release state capable of rotating freely.

The cylindrical sewing jig capable of being assembled and disassembled quickly is characterized in that the driving feeding barrel is further provided with a resetting piece connected with the rotating piece, so that the rotating piece can rotate from the release state to the limiting state in which the rotating piece is clamped and positioned with the limiting hook.

The cylindrical sewing jig capable of being assembled and disassembled quickly is characterized in that the rotating piece is further provided with an abutting block capable of moving axially in a penetrating mode, and two sides of the abutting block are adjacent to the limiting hook and the replacing cylinder respectively, so that the replacing cylinder can indirectly drive the limiting hook to actuate.

The cylindrical sewing jig capable of being quickly assembled and disassembled is characterized in that a plurality of elastic sheets are arranged on the outer peripheral surface of the driving feeding barrel, each elastic sheet is provided with a free section which is in contact with the replacing barrel, a fixed section which is connected with the driving feeding barrel and an arched section which spans the rotating piece to form elastic acting force, and the arched sections are connected between the free end and the fixed end.

The cylindrical sewing jig capable of being assembled and disassembled quickly is characterized in that a plurality of holding hooks are arranged on the peripheral surface of the driving feeding barrel, a groove is formed on one side of each holding hook adjacent to the driving feeding barrel, and a rotating track capable of keeping the rotating piece to rotate is formed by the plurality of grooves.

The cylindrical sewing jig capable of being quickly assembled and disassembled is characterized in that the rotating piece is provided with a limiting groove hole, and a limiting pin connected with the driving feeding barrel penetrates through the limiting groove hole to limit the rotating angle range of the rotating piece.

The fixture is provided with a positioning hook and a spring for keeping the positioning hook in a clamped state, one end of the positioning hook is provided with a hook part which is in contact with the replacement cylinder, the other opposite end of the positioning hook is provided with an inclined part which can be in contact with the rotating part, the rotating part is provided with a recess at the corresponding position of the inclined part, and the recess pushes against the inclined part of the positioning hook when the rotating part rotates, so that the hook part leaves the replacement cylinder to form a separated state.

The quick-detachable cylindrical sewing jig is characterized in that the driving feeding barrel and the replacing barrel are respectively provided with an opening at the corresponding position of the clamping hook part, and the clamping hook part is provided with a blocking surface and a guide inclined surface.

Compared with the prior art, the invention adopting the technical scheme has the advantages that: through the design of a fastener and a rotating piece between the driving feeding barrel and the replacing barrel, the replacing barrel can be manually operated to move forward, rotate, retreat and the like in the direction of a single central shaft, the assembly and separation operation between the two barrel bodies are completed, the standby time of the sewing machine in replacing the replacing barrel is greatly shortened, and a user can use the sewing machine easily.

Drawings

FIG. 1 is a perspective view of the cylindrical sewing jig of the present invention mounted on a sewing machine;

FIG. 2 is an exploded view of the cylindrical sewing jig of the present invention;

FIG. 3 is a schematic cross-sectional view of the fastener mounting location of the drive feed cartridge of the present invention;

FIG. 4 is a schematic cross-sectional view of the mounting location of the retaining hook of the present invention for driving a feed cartridge;

FIG. 5 is a schematic cross-sectional view of the mounting location of the abutting block of the driving feed cylinder of the present invention;

FIGS. 6A-6C are schematic views of an alternative cartridge assembly to a drive feed cartridge;

fig. 7A to 7D are schematic views of the replacement cartridge separated from the drive feed cartridge.

Description of reference numerals: 1-a sewing machine; 2-a base; 3, driving the feeding cylinder; 30-a fastener; 301-positioning hook; 302-a spring; 303-hook part; 304-an inclined portion; 305-a blocking face; 306-a guide ramp; 31-a holding hook; 311-a groove; 32-a rotating member; 321-a loop; 322-recess; 323-card slot; 324-a counter block; 325-limit slot hole; 326-a limit pin; 33-positioning guide block; 331-fixing the blocking piece; 332-a movable flap; 34-a limit hook; 341-an elastic member; 35-a regressive piece; 36-a spring plate; 361-free section; 362-a fixed segment; 363-an arch-shaped segment; 37-opening; 38-a relief hole; 4-replacing the cartridge; 40-sewing pattern clamps; 41-opening; 42-a guide groove; 43-end face; 5-central axis; 6-a first direction; 7-second direction.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings, the advantages and features of which will become apparent as the description proceeds.

Referring to fig. 1 and 2, the cylindrical sewing jig of the present invention is mounted on a base 2 of a sewing machine 1, and includes a driving feed cylinder 3 connected to the base 2 and a replacement cylinder 4 capable of being quickly assembled and disassembled to the driving feed cylinder 3, the driving feed cylinder 3 is driven by a driving device (not shown) to perform rotation and axial movement, the replacement cylinder 4 is provided with a sewing pattern clamp 40 at a side away from the driving feed cylinder 3, and is assembled to the driving feed cylinder 3 along a first direction 6 of a forward central shaft 5.

As shown in the figure, the driving feeding barrel 3 is provided with at least one fastener 30, a plurality of holding hooks 31, a rotating member 32, a positioning guide block 33, a limiting hook 34, a returning member 35 and at least one elastic sheet 36, and one side of the replacement barrel 4 adjacent to the driving feeding barrel 3 is provided with at least one opening 41 corresponding to the position of the fastener 30 and a guide groove 42 corresponding to the position of the positioning guide block 33, so that the replacement barrel 4 and the driving feeding barrel 3 can be quickly aligned and assembled through a guide device formed by the positioning guide block 33 and the guide groove 42, and the sewing path of the sewing pattern clamp 40 is located at the sewing position below the machine needle.

Referring to fig. 2 and 3, the fastener 30 includes a positioning hook 301 and a spring 302 acting on the positioning hook 301. One end of the positioning hook 301 is provided with a hook part 303 contacting the replacing cylinder 4, and the other opposite end is pivoted with the driving feeding cylinder 3 and is provided with an inclined part 304 contacting with the rotating part 32; the spring 302 is a torsion spring with two ends respectively abutting against the positioning hook 301 and the driving feeding barrel 3, so that the fastener 30 can keep the replaceable barrel 4 and the driving feeding barrel 3 in a fastened state. The driving feeding barrel 3 is also provided with an opening 37 at a position corresponding to the hooking portion 303, and the hooking portion 303 is provided with a blocking surface 305 capable of hooking the opening 41 of the replacement barrel 4 and a guiding inclined surface 306 contacting the end surface 43 of the replacement barrel 4 to drive the positioning hook 301 to swing.

Referring to fig. 2 and 4, the plurality of holding hooks 31 are disposed on the outer circumferential surface of the driving feeding barrel 3, and each holding hook 31 is formed with a groove 311 on one side adjacent to the driving feeding barrel 3, and the plurality of grooves 311 together form a rotating track for the rotating member 32 to be disposed, so that the rotating member 32 is restricted to be sleeved on the outer circumference of the driving feeding barrel 3 and can rotate freely and cannot move axially relative to the outer circumference.

Referring to fig. 2 and 5, the rotating component 32 is a ring 321, and a recess 322 in a trapezoid shape is formed at a position of the ring 321 corresponding to the inclined portion 304, the recess 322 can push against the inclined portion 304 of the positioning hook 301 when the rotating component 32 rotates, and a slot 323 is formed at a position of the ring 321 corresponding to the position-limiting hook 34. The recess 322 can push against the inclined portion 304 of the positioning hook 301 when the rotating member 32 rotates, so that the hook portion 303 will leave the opening 41 of the replaceable cartridge 4 to form a disengaged state, and then the replaceable cartridge 4 will be able to be separated from the driving feeding cartridge 3 along a second direction 7 opposite to the central shaft 5.

In a preferred embodiment, the inner side of the ring 321 is further provided with an axially movable abutting block 324 and a limiting slot 325, and two sides of the abutting block 324 are respectively adjacent to the limiting hook 34 and the end surface 43 of the replaceable cartridge 4, so that the replaceable cartridge 4 can indirectly drive the limiting hook 34 located on the other side of the ring 321 to move; a limit pin 326 connected with the driving feeding cylinder 3 is inserted into the limit slot 325 to limit the rotation angle range of the rotating member 32.

The positioning guide 33 comprises a fixed stop 331 fixed on the outer peripheral surface of the driving feed cylinder 3 and a movable stop 332 spaced from the fixed stop 331, the outer peripheral profiles of the fixed stop 331 and the movable stop 332 correspond to the concave shape of the guide groove 42, and the movable stop 332 is assembled on the rotating member 32 and can rotate simultaneously with the rotating member 32 to approach the fixed stop 331, so that the movable stop 332 of the rotating member 32 can be driven to rotate synchronously when the replacing cylinder 4 rotates along the central shaft 5.

The limit hook 34 is pivotally disposed on the outer circumferential surface of the driving feeding barrel 3, and the limit hook 34 is pushed by an elastic member 341 and is kept clamped and fixed in the clamping groove 323 of the rotating member 32, so that the rotating member 32 is in a non-rotatable limiting state, and the limit hook 34 can be pushed by the replacing barrel 4 along the first direction 6 to be separated from the rotating member 32, so that the rotating member 32 is in a free-rotatable releasing state.

The return element 35 is connected to the rotating element 32 and can return the rotating element 32 from the released state to the restricted state where the rotating element is engaged with the limit hook 34.

The elastic sheet 36 is disposed on the outer circumferential surface of the driving feeding barrel 3, and is formed with a free section 361 capable of contacting with the replacing barrel 4, a fixed section 362 connected with the driving feeding barrel 3, and an arch section 363 spanning the rotating member 32 to form an elastic acting force, the arch section 363 is connected between the free section 361 and the fixed section 362, and the free section 361 penetrates into a yielding hole 38 formed on the outer circumferential surface of the driving feeding barrel 3, so that when the replacing barrel 4 is mounted on the driving feeding barrel 3 and clamped, the free section 361 of the elastic sheet 36 will push against the end surface 43 of the replacing barrel 4, thereby eliminating the axial gap between the driving feeding barrel 3 and the replacing barrel 4.

Referring to the assembly operation shown in fig. 6A to 6C, when the driving feeding cylinder 3 and the replacing cylinder 4 are to be assembled, first, the guide groove 42 of the replacing cylinder 4 corresponds to the positioning guide block 33 of the driving feeding cylinder 3, and the replacing cylinder 4 is moved close to the driving feeding cylinder 3 along the first direction 6.

Subsequently, the end surface 43 of the replacement cartridge 4 will contact the positioning hook 301 of the fastener 30, and the hook portion 303 of the positioning hook 301 will be affected by the pushing action between the guiding inclined surface 306 and the end surface 43, and then deflect upwards to enable the replacement cartridge 4 to continuously move towards the first direction 6.

Finally, when the replacement cartridge 4 continues to move to the opening 41 beyond the guiding slope 306, the positioning hook 301 will be turned downward to the opening 41 by the torsion spring, so that the wall surface of the opening 41 is clamped and contacted with the blocking surface 305 of the clamping hook 303, and at the same time, the end surface 43 of the replacement cartridge 4 will be contacted and contacted by the spring piece 36 (fig. 6C, please refer to fig. 7A).

Referring to the disassembly operation schematic shown in fig. 7A to 7D, when the driving feeding cylinder 3 and the replacing cylinder 4 are to be disassembled, first, the replacing cylinder 4 is pushed to move toward the first direction 6, so that the end surface 43 of the replacing cylinder 4 contacts the abutting block 324 of the rotating member 32, and then, the abutting block 324 moves toward the first direction 6 relative to the ring 321, and pushes the limiting hook 34 to separate from the slot 323, so that the ring 321 is changed from the limiting state to the releasing state.

Subsequently, the replacement cylinder 4 is rotated so that the guide groove 42 drives the movable blocking piece 332 of the rotating piece 32 to further drive the ring 321 to generate a rotational displacement along the central shaft 5, at this time, the recess 322 of the ring 321 will contact the inclined portion 304 of the positioning hook 301 to further push the positioning hook 301 to deflect upwards, so that the hook portion 303 of the positioning hook 301 leaves the opening 41 of the replacement cylinder 4 to present the release state.

Then, the replacement cylinder 4 is moved along the second direction 7 of the central shaft 5, so that the replacement cylinder 4 is away from the driving feeding cylinder 3 to complete the separation operation, and finally, the rotating member 32 of the driving feeding cylinder 3 is acted by the returning member 35 and returns to the original position (as shown in fig. 2) where the limit hook 34 is clamped in the clamping groove 323.

In the above operation, the user of the sewing machine can prepare more than two groups of the replacement cylinders 4 to be assembled on the sewing machine in turn, and the replacement cylinder 4 which is not assembled on the sewing machine is disassembled and clamped to replace the sewing material, so as to achieve the purpose of shortening the time for replacing the sewing material during the machine halt.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a tool is made up to cylindric that can quick assembly disassembly which characterized in that contains: the sewing machine comprises a driving feeding barrel and a replacing barrel with a sewing pattern clamp, wherein the replacing barrel is assembled and connected with the driving feeding barrel along a first direction of a forward central shaft, the driving feeding barrel is provided with at least one fastener and a rotating piece, the fastener keeps the replacing barrel and the driving feeding barrel in a clamping state, and the rotating piece can rotate to drive the fastener to be converted into a separation state from the clamping state, so that the replacing barrel can be separated from the driving feeding barrel along a second direction opposite to the central shaft.

2. The jig is made up to cylindric of quick loading and unloading of claim 1, characterized in that: a guiding device is arranged between the rotating piece and the replacing cylinder, so that the replacing cylinder and the driving feeding cylinder can be quickly aligned and assembled, and the replacing cylinder can synchronously drive the rotating piece to rotate and displace when rotating along the central shaft.

3. The jig is made up to cylindric of quick loading and unloading of claim 2, characterized in that: the guiding device comprises a guide groove arranged on the replacement cylinder and a positioning guide block arranged on the driving feeding cylinder, the positioning guide block is provided with a fixed blocking piece and a movable blocking piece arranged at an interval with the fixed blocking piece, and the movable blocking piece can be pushed by the rotation of the replacement cylinder and is close to the fixed blocking piece.

4. The jig is made up to cylindric of quick loading and unloading of claim 1, characterized in that: the driving feeding barrel is provided with a limiting hook which is clamped and abutted against the rotating piece, so that the rotating piece is in a limiting state incapable of rotating, and the limiting hook can be pushed by the replacing barrel along the first direction to be separated from the rotating piece, so that the rotating piece is in a release state capable of freely rotating.

5. The jig is made up to cylindric of quick loading and unloading of claim 4, characterized in that: the driving feeding barrel is further provided with a resetting piece connected with the rotating piece, so that the rotating piece can rotate from the release state to the limiting state in which the rotating piece is clamped and positioned with the limiting hook.

6. The jig is made up to cylindric of quick loading and unloading of claim 4, characterized in that: the rotating piece is further provided with an abutting block capable of moving axially in a penetrating mode, and two sides of the abutting block are adjacent to the limiting hook and the replacement cylinder respectively, so that the replacement cylinder can indirectly drive the limiting hook to actuate.

7. The jig is made up to cylindric of quick loading and unloading of claim 6, characterized in that: the outer peripheral surface of the driving feeding barrel is provided with an elastic sheet, the elastic sheet is provided with a free section which is in contact with the replacing barrel, a fixed section which is connected with the driving feeding barrel and an arched section which spans the rotating piece to form elastic acting force, and the arched section is connected between the free end and the fixed end.

8. The jig is made up to cylindric of quick loading and unloading of claim 1, characterized in that: the periphery of the driving feeding barrel is provided with a plurality of holding hooks, a groove is formed on one side of each holding hook adjacent to the driving feeding barrel, and a rotating track capable of rotating for holding the rotating piece is formed by the plurality of grooves.

9. The jig is made up to cylindric of quick loading and unloading of claim 1, characterized in that: the rotating piece is provided with a limiting groove hole, and a limiting pin connected with the driving feeding barrel penetrates through the limiting groove hole and is used for limiting the rotating angle range of the rotating piece.

10. The jig is made up to cylindric of quick loading and unloading of claim 1, characterized in that: the fastener is provided with a positioning hook and a spring for keeping the positioning hook in the clamping state, one end of the positioning hook is provided with a hook part which is contacted with the replacing cylinder, the other opposite end of the positioning hook is provided with an inclined part which can be contacted with the rotating part, the rotating part is provided with a depression at the corresponding position of the inclined part, and the depression pushes against the inclined part of the positioning hook when the rotating part rotates, so that the hook part leaves the replacing cylinder to form the separation state.

11. The jig is sewed up to cylindric of quick loading and unloading of claim 10, characterized in that: the driving feeding barrel and the replacing barrel are respectively provided with an opening at the corresponding position of the clamping hook part, and the clamping hook part is provided with a blocking surface and a guiding inclined surface.