TW445323B - Over-lock sewing machine - Google Patents

Abstract

To adjust the position of a cloth cutting width easily and surely only through a knob operation in the cloth cutting mechanism of an overlock sewing machine while holding always constant the cutting pressures of a drive knife and a fixed knife. A movable knife 18 located at a movable knife drive A is energized under appropriate pressure so as to roughly abut against a fixed knife 16 located on a fixed knife table B. The movable knife drive A is freely oscillationally mounted on a main spindle 2 freely slidably mounted in a machine body frame 1. The fixed knife table B is secured to the axial end of the main spindle 2 in such a way as to be movable along with the main spindle 2, and the movable knife drive A and the fixed knife table B can be moved at the same time by a control shaft member 3 axially reciprocating to and from the machine body frame 1.

Description

445323

V. Description of the invention (l) [Application fields in the industry] The present invention relates to an overlock sewing machine, which is located in the cloth cutting mechanism of the overlock sewing machine. One side can keep the driving blade and the fixed blade between each other. The cutting pressure of the section can be operated with a knob, which is simple and sure = the position of the cutting width of the entire cloth. ^ [Known technology] There is a kind of small overlock sewing machine that cuts the edge of the cloth while covering the edge. The operation of cutting the edge of the cloth is performed on the edge of the needle plate by the fixed piece and the drive mechanism of the sewing machine. Driven by a movable knife room that can be moved up and down. In overlock sewing machines, there is also a type in which the cloth is adjusted to a desired size [problem to be solved by the invention] When the pseudo-arm is swinging freely with the bearing, the position is fixed and cannot be moved in the sliding direction. The upper blade The change of the increase. As a result of intensive research, the end of the fixed blade holder with a fixed blade is fixed on the upper end-a blade formed as a bearing portion can swing freely on the main body frame, and can be inserted in the axial direction of the main body frame. One of the shafts of the bearing part in the conventional model is to support the upper knife on the sewing machine frame, and the shaft moves in the axial direction. Therefore, if the fixed knife is moved upward and downward on the left and right, the pressure of the fixed blade also moves with it. [Solving Means of Invention] In order to solve the above-mentioned problems, the overlock sewing machine device invented by the inventor: the main body seat; the sliding body is mounted on the above; the main shaft of the fixed blade seat is described in the machine; The main blade's movable blade drive body; the operating shaft member which moves backward through the male thread;

445323 V. Description of the invention (2)

The movable blade is set at the end, and the other force is close to the above-mentioned solid; install the movable blade to make the movable blade a spring shaft member; the movable blade connection plate of the above-mentioned operating shaft member and the main spring "and fixed at The operation head is connected to the main and fixed side, and one side can be composed of a knob that drives the blade and the shaft end of the cow. The above problem can be solved by simply using the spin on the side 2 = holding-fixed I '. Correct adjustment cloth The position of the edge-breaking pressure and the position of this breaking pressure width 'solve the above-mentioned problems. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the national plane. A perspective view of the main part of the present invention in an overlock sewing machine. A movable blade driving body A; a fixed movable blade moon shaft member C, etc. FIG. 1 is a main component fixed blade holder B assembled in the Ming Dynasty; and a main body frame 1 is formed as a part of an overlock sewing machine main frame, and Roughly-it becomes a cuboid. In the main body frame 1, guide holes la, screw holes lb, and auxiliary guide holes lc are formed. The hole directions of these guide holes la, screw holes Ib, and auxiliary guide holes 1c are all Parallel to each other (see Figure 2). In the aforementioned guide hole 1 a, the main shaft 2 is penetrated, and the operating shaft member is installed in the screw hole 1 b. The auxiliary guide shaft 4 is penetrated in the auxiliary guide hole lc (see FIGS. 1 and 2). On the main shaft 2, A movable blade driving body a is installed. The movable blade driving body A is used for reciprocating the movable blade i 8 in a downward and downward direction. Further, the movable blade 18 is reciprocated in an upward and downward direction and is roughly clamped with the fixed blade 16 The tight-shaped crossover is to cut the cloth edge of the operator (refer to Figure 6).. The movable blade drive body A is composed of a swing transmission part 5; a bearing part 6;

445323 V. Description of the invention (3)-one by one = ^ drive company 7; and bearing unit 8. Two bearing portions 6, 6 are formed on both sides of the swing transmission portion 5 in the ^ direction (refer to FIG. 3). The shaft 丨 in the eight parts 6 and 6 passes through the above-mentioned main shaft 2 (refer to FIG. 4 and the whole moving body A is based on the axis of the main shaft 2 in the bearing parts 6 and 6 as a piece; two for the main body frame 1 A structure that swings up and down freely (refer to Section 6)

(Photo) D s j, the two bearing parts δ and 6 are spaced at an appropriate interval, and each bearing part is 6 mm. If the entire drive transmission part 5 ', the blade driving link 7 and the bearing part 8 are integrated as described above, the two bearing parts β and β pass through the main body frame 1 (see Figs. I and 2). 、 The main shaft 2 is mounted on the 4 movable blade drive body A, and the swinging transmission part 5 is driven by the mechanism shown in the figure. +, +. Red 9 is driven from Hongji Putian Guwei 'above. The shaft that returns to the main shaft 2 The heart makes a sway motion for the heart. Also, as the ^ of the shaft member 3 in the substantially middle portion of the axial direction, a male thread 3a is formed (refer to FIG. 3), and the male thread 3a and the female thread of the screw hole lb on the frame 1 of the μ zone are engaged with each other. ν When the main shaft is rotated in the circumferential direction of the shaft, the operating shaft structure can be moved backward on the frame 1 in the axial direction. The D-axis member 3 is at the axial ends of the male thread 3a part with respect to the main machine. (Refer to FIG. 3), and the stopper portion 3b is a screw hole of the stopper frame 1. The vicinity of the openings at both ends can be limited to: 4 different from the axial movement range of the main machine, which can prevent the operating member from acting as the shaft member 3 (refer to Figures 2, 4, and 5? Excessive movement of the member 3 in the axial direction). 〇 The stopper portion 3b can be specifically used as a schematic diagram, and the axial end of the shaft member 3 is known as a buckle for pushing M. Also,

For the purpose of α, the pressing head 445323 V. Description of the invention (4) 3c is the base 15 which abuts on the fixed blade holder b described later, and often forms a pressing state for it as the fixed blade holder B For position adjustment (refer to Figure 2). * Also, the auxiliary guide shaft 4 is the same as above. The main shaft 2 and the operating shaft member 3: are moved together in the axial direction, so that the fixed blade holder B can be moved in a stable state (see FIG. 2). The guide shaft 4 is slidably fitted into the auxiliary guide hole 1 () formed in the main body frame 1 above, and its end is fixed on the upper seat 15. < 『ΐΐ2, operation shaft member 3, and The auxiliary guide shaft 4 is connected by the connecting plate 10 to be able to move at the same time (refer to J, 2 = flat = :, against the ends of the main shaft 2 and the auxiliary guide shaft 4 and the uranium 4 minus rattan is fastened to The female thread 2a formed at the end of the main shaft 2 and the female thread "of the auxiliary guide shaft 4" are fixed inside (refer to the nail drawing). The ends of the i-axis "3 of the auxiliary guide plate 10 are penetrated through the formation In the above coupling, _, the through hole 10a, and the operating shaft 3 lies in the position of the flange -12 (refer to FIG. 3) from the end of the shaft. The interposed bullet ΪΓ3 shaft 2 On the axis Λ lies between the main body frame 1 ㈣ and the joint plate 10 of the section 6 f). On the axis 4 is that the main body frame 1 and Lian often have elasticity: 背 Γ deviates from the main body frame. 1 Between the connecting plates 10, the thrust is lifted (see Figure 1 '2). Part 5, blade drive company 7 ^ = A is from the bearing part 6 via the swing drive diagram. The blade drive company 7 7 θ It is formed as a whole (refer to 3rd and 6th as the shaft member 3 and the auxiliary guide bearing portion 6 are bent downward, and by the operation, the downward, and following the swing transmission portion 5

The 445323 blade drive and even the guard 7 will also perform a swing motion in the up and down direction. I. The swing motion of the invention description (5). The fixed knife holder B is constituted by a fixed knife 1 § fixed to the base] 5. The end of the main shaft 2 is fixed on the base 15 (refer to FIG. 3) 'and the pushing end of the operation extraction member 3 is abutted against the base 15 so that the base 15 can follow A component that moves while operating the shaft member 3 in the axial direction. Also, a protruding portion 4b is formed at the end of the auxiliary guide shaft 4, and the 胄 protruding portion # is inserted into the horizontally long hole 15a formed in the base 15.

The connection between 4 and the base 15 (see Figure 4). The auxiliary center of the guide shaft 4 has an eccentric V S axis. The protrusions are discussed in detail, and the position of the water of the fixed blade 16 squared at the above-mentioned horizontal long hole center .μ ^ can be finely adjusted. A blade 18 is used for the shaft portion 7 of the movable blade shaft member c, and the shaft adjacent to the shaft 7 of the movable blade shaft member c. A spring seat 19 is provided through the two ends of the movable blade drive. Between the shaft 8 and the spring seat 19, a blade portion 8 of a knife pusher / A is installed, and the bearing portion is held by the fixed knife; 6 is provided with Λ elastic bullet 20 to make the movable blade state. The spring seat 19 is made up of a pressure change of the cushion diagram (Fig. 3), and the shape of the spring seat is closely changed (Fig. 3). Fig. 19a and screw 19b (refer to the second and the movable blade driving body A, the fixed blade 々—π shanshi 4 and the shaft member 3, can be spaced B ± # ^ The main car part 8 and the fixed blade seat and the movable blade driving body A are as described above. The movable blade is always maintained-a fixed distance spring 20 is always maintained-fixed 1 = blade 16 is the taste house pushed by the above blade Force to become close to the state (

Page 8 445323

The auxiliary guide shaft 4 is assisted so that its structure is composed of the main shaft 2 and the operating shaft member 3. V. Description of the invention (6) (see Figs. 1 and 2) In addition, there are also simplifications in the present invention. In this embodiment, the holder B is supported. [〔Action〕 f Rotating the spinner 12 'can make the operating shaft member 3 and the operating shaft member 3 rotate in the circumferential direction, === direction, the mosquito 3 a is now in the main body engaged with the male thread 3 a : J: The male screw of 3 is rotated, so that the operating shaft member 3 is added in the hole 1b relative to the host machine. 筮 益 阁 e —The body machine 1 moves in the axial direction. & 疋 In the normal state, the narrowest width of the cut edge of the cloth edge is 2 /, the distance between the cutting line of the fixed blade 16 and the movable blade 18 and the main machine plus 1 is L; the figure 5 of the towel is The cloth edge is cut off, and the cutting line between the fixed blade 16 and the movable blade 18 is set to a distance L between two, which indicates that the distance L is large, and the distance L is large. As the above-mentioned distance moves along with the axial movement of the operation shaft member 3, the main shaft 2 and the auxiliary guide shaft 4 will follow to move, so that the fixed tool holder ^. On this day, through the connecting plate 10, the operating shaft members 3 and = 2 move together with Nissho, so that the movable blade driving body 8 and the fixed knife can often move together. As a result, it is possible to perform a shearing operation with constant elastic pressure between the movable 18 on the movable driving body A and the fixed blade i 6 mounted on the fixed blade holder B (refer to FIGS. 4 and 5). ’,,‘ 疋 [Effect of the invention] The overlock sewing machine for the i-th invention in the scope of patent application is:

Page 9 445323 V. Description of the invention (7) __ The movable blade 18 on the moving body A — appropriate pressure to make the two blades, the fixed blades on the fixed blade holder β, slide on the rack ii, It is in a close-fitting state, which is mounted on the main body drive body A; the above-mentioned-workable flaw can be moved freely by the movable knife main shaft 2-and moved ^; and the knife seat β is fixed on the main shaft 2 and can be connected with the The operating shaft member 3 is configured such that the upper frame f moves toward the main body frame 1 in the axial direction while moving backward. The movable blade driving body 4 and the fixed blade holder B piece 1 8 and the fixed blade j 6 ′ can be operated by the operating shaft member. 3 — While holding the movable blade driving body A and the fixed blade y 疋 for a while, the movable blade can be adjusted. Therefore, move d at the same time to maintain a certain cutting condition with a full cutting edge width. The movable blade 18 can be moved and can still be fixed frequently. The overlock sewing machine with two == 2 pieces is, · Main =, its end ^: Said main = Knife spindle 2 formed as a bearing portion 8 at one end, and has a spindle 2 Mounted on the above-mentioned main body frame j can be moved at 7: and the warp-mediary via the above-mentioned A; the warp-median male thread 3a can operate the movable shaft member 3 which can move the movable blade to drive the body; The movable blade 18 is moved backward in the axial direction, and the elastic pressure of the negative end of the shaft portion 17 of the upper Λ shaft portion 8 is closely adhered in the second direction: the movable blade station of the movable blade 18 is placed in a factory The blade I pushes the piece I component C of the spring 20 and connects and fixes the above-mentioned connecting plate 1 of the operation shaft member 3 and the main shaft 2. ; And, fixed on the operating shaft to form 2 forces: the head is formed by the rotary knob 12, so that when the end of the cloth edge = 3 is adjusted, the fixed blade 16 and the movable blade month η can be broken from two a to the width 'J The pressure between the moving blades 1 8 is often kept constant,

Page 10 445323

V. Description of the invention (8) The adjustment operation is simple and the structure is simplified. # 2 r ^ 费 ′ and the main shaft 2 is moved by the operating vehicle ^ 2 The shaft 2 can be moved in the axial direction together The tower 3 is moved via a male screw ’and the operation shaft is moved. The pattern 3 & can move the driving body A and the fixed blade of the fixed blade 1 to the main body frame in the axial direction. The rotary blade 12 'can make the movable blade cut the wide side of the cloth, and When the pressure is always maintained at a tight point, the blade is adjusted in the previous model, and the cut of the fixed cloth edge is not marked after the adjustment—the tightness of i, the force caused by the changes in the pattern 3a on the main frame Later in the month, the operation shaft member was invented by a male screw. The invention of the machine tool was ^, and its end was the main shaft 2 and the operation shaft member 3-, and moved freely. The auxiliary guide shaft 4 of the seat β is to slide the main shaft 2 and the guide shaft ^ on the frame 1. Therefore, the fixed knife month B can be stably cut at the same time. When the cloth edge cutting width is adjusted, the first Two or three items! T The π invention of the fourth item is located at both ends of the axial range of the patent application. In the above, the male thread 3a of the above-mentioned operating shaft member 3 and the shaft structure are located at the m-limiting portion 3b. Therefore, the movement range of the operation wheel direction can be restricted, and Ah can prevent excessive movement when adjusting the cloth edge cutting width 445323. 5. Description of the invention (9) degrees To protect the safety of the mechanism. [Brief description of the drawings] Figure 1: A perspective view of the structure of the present invention. I Figure 2: A plan view of the structure of the present invention. Figure 3: An exploded perspective view of the structure of the present invention. : The positional relationship diagram of each part when the trimming width of the cloth edge is adjusted to the minimum, and the distance between the cutting line of the fixed blade and the movable blade and the main body frame is represented by L. Figure 5: Adjusting the trimming width of the cloth edge It is the largest, and the positional diagram of each part when the distance between the cutting line of the fixed blade and the movable blade and the main body frame is represented by L '. Figure 6: A schematic diagram of the state where the movable blade driving body swings around the main axis. Figure 7: A schematic view of the state of the main shaft, operating shaft components, auxiliary shafts, and guide shafts mounted on the main body frame. [Symbols] A ...… movable blade drive body B… fixed blade holder 1…… main machine Frame 2 ... Main draw 3 ... Operating shaft member 3a ... Male screw 31 "... Stopper 4 ... Auxiliary guide shaft 7 ... Blade drive link 8 ... Auxiliary bearing portion 10 ... Link plate 12 ... • •• Swivel t. 16… The fixed blade 17 by the vehicle 18 ... ... ... ... ... ... movable blade 20 presses the blade spring

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Claims (1)

445323 VI. Application for patent scope 1. An overlock sewing machine comprising: applying a proper pressure to a fixed blade of a movable blade on a movable blade driving body, and a state on the fixed blade holder, so as to make the two blades approximately close to each other It is mounted on the main body frame to slide freely; the movable blade drive body is free; the J king shaft is mounted to swing to fix the fixed knife and moon seat to the main movement; the movable blade drive body and fixed knife can be combined with the Spindle together 2 · —A kind of overlock machine, including: 同时 The blade holder moves at the same time. Main body frame; fixed blade holder with fixed blades; a main shaft which can be slidably mounted on the main body of the above-mentioned fixed blade holder; the end of the machine head is fixed with a bearing portion formed on one end thereof by the main shaft Installed on the above main machine: 可 区 动 连 # ， 经 经 介 体 ； East has a movable blade drive screw that can swing freely. It can be moved backwards in the axial direction for the main body frame above: through the bearing A movable blade is provided at the -end of the shaft portion, and the above-mentioned fixed ... the movable blade is closely attached to the movable blade shaft member of the blade pressing spring of the blade by elastic pressure; the end plate describes the end of the operating sleeve member and the main shaft. The head is connected and fixed, and the knob is fixed at the end of the operation shaft member. Page 13 445323 6. Scope of patent application 3. For example, the overlock sewing machine of the scope of patent application No. 2 includes: It can be moved with the above-mentioned main shaft and operating shaft member, and its end is abutted against the fixed blade The auxiliary guide shaft of the seat is slidably mounted on the main body frame. 4. For the overlock sewing machine with the scope of patent application No. 2 or 3: ¾, it includes: The stopper is provided at both axial ends of the male thread part of the operating shaft member. Page 14