A sewing presser foot for a pin marking machine

Abstract

The utility model discloses a sewing presser foot of pin marking machine, it includes installation support, is fixed on the fixed frame, presser foot plate, is fixed in the lower extreme of installation support, is equipped with the axle rod on it and is used for needle bar to pass through the through -going orifice, fixed knife, is fixed on the presser foot plate, and is equipped with the cutter mouth of corresponding through -going orifice on fixed knife, movable knife, rotates and is installed on the axle rod, and abuts and set up above fixed knife, drive arrangement, is installed on the installation support, is used for driving movable knife rotation about axle rod, the utility model discloses fixed knife fixed on the presser foot plate, through the cooperation of drive cylinder, push rod, fixed sleeve seat, first swing arm, second swing arm and linkage spare, can drive movable knife and rotate about the axle rod located on the presser foot plate, in the rotation process, movable knife and fixed knife cooperate with each other, can accurate and fast cut off the needle thread, and the whole structure is stable, and the action of cutting thread is simple and efficient, is more suitable for installing on pin marking machine and uses, and can adapt to the needle thread cutting of different sewing mode, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of..., and in particular to a sewing presser foot for a label attaching machine. Background Technology

[0002] Label attaching machines are specialized sewing equipment commonly used in modern industry. They are used to attach socks, gloves, and other products together or to attach labels (which are rigid paper pieces) indicating the material, size, and price of the products. Products sewn together by a label attaching machine are not permanently fixed but can be quickly removed during use.

[0003] The sewing machine head of a label attaching machine is equipped with a sewing presser foot to hold the label in place and cut the thread after the label is sewn onto the sock. Therefore, the sewing presser foot typically includes both a presser foot device and a thread-cutting device. For example, Chinese Patent CN202110357531.6 discloses a thread-cutting device for a sewing machine and its movable blade. This design includes a base plate, a reciprocating mechanism, a swing mechanism, and a cutting blade assembly. The reciprocating mechanism includes a moving part, the swing mechanism includes a swing arm, and the cutting blade assembly includes a movable blade and a fixed blade. The movable blade is fixed to the moving part and correspondingly formed above the swing arm, while the fixed blade is fixed to the swing arm and formed above the movable blade. The movable blade includes a first cutting section, a second cutting section, and a hook section formed between the first and second cutting sections, arranged longitudinally. The hook section, after picking up the hook thread, clamps it between the movable blade and the fixed blade and cuts the thread by sliding relative to the fixed blade through the first cutting section. In practical applications, although the above-mentioned mechanism has a good cutting effect on needle and thread, its structure is still relatively complex and more suitable for larger sewing equipment. Label attaching machines are smaller and only need to quickly and accurately cut the needle and thread after sewing. Therefore, it is necessary to develop a simpler and more practical sewing presser foot to cooperate with the presser foot and thread cutting. Utility Model Content

[0004] To solve the above problems, this utility model proposes a sewing presser foot for a label attaching machine.

[0005] The technical solution adopted by this utility model is: a sewing presser foot for a label attaching machine, wherein a fixing frame is provided on one side of the sewing machine head of the label attaching machine, comprising: The mounting bracket is fixed to the mounting frame. A pressure foot plate is fixed to the lower end of the mounting bracket. The pressure foot plate is provided with a shaft and a through-hole for the needle bar to pass through. A fixed blade is fixed to the pressure foot plate, and the fixed blade is provided with a cutting edge corresponding to the through opening; The movable blade is rotatably mounted on the shaft and abuts against the fixed blade above it; A drive unit, mounted on the mounting bracket, is used to drive the movable blade to rotate around the shaft. The movable blade, positioned at the edge of the cutting edge, cooperates with the fixed blade to cut the needle thread.

[0006] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0007] Preferably, the driving device includes: Drive cylinder, used to drive the push rod to move back and forth; A fixed sleeve is fixed to the mounting bracket; A linkage component, wherein a transmission rod is provided on the linkage component, and the transmission rod passes through the fixed sleeve; The first swing arm has one end fixed to the transmission rod and the other end provided with a connecting rod, and one end of the push rod is installed on the connecting rod; The second swing arm has one end rotatably connected to the linkage, and the other end is provided with a lower connecting rod, on which the movable blade is mounted.

[0008] Preferably, the pressure foot plate is provided with a positioning rod, the upper pressure plate is provided above the movable blade, the shaft and the positioning rod are used to cooperate in installing the upper pressure plate, the shaft is provided with a first nut, the positioning rod is provided with a second nut, and a first compression spring is provided between the first nut and the upper pressure plate, and between the second nut and the upper pressure plate.

[0009] Preferably, the movable blade is provided with a through hole for the lower connecting rod to pass through, and a second compression spring is sleeved on the outside of the transmission rod, with the upper and lower ends of the second compression spring abutting against the linkage and the movable blade, respectively.

[0010] Preferably, the fixed sleeve is provided with at least one bearing, and the transmission rod is arranged vertically and passes through the bearing.

[0011] Preferably, the front and rear ends of the cutting edge are respectively provided with a first front cutting position and a first rear cutting position, and the front and rear ends of the movable blade are respectively provided with a second front cutting position and a second rear cutting position. The second front cutting position cuts the needle thread at the first front cutting position, and the second rear cutting position cuts the needle thread at the first rear cutting position.

[0012] Preferably, the presser foot plate is provided with a mounting groove for matching and placing the presser foot plate, and the through opening is located at the bottom of the mounting groove.

[0013] More preferably, the pressure foot plate is further provided with a clearance groove, which is located on the rear side of the mounting groove and communicates with the mounting groove.

[0014] Compared with the prior art, this utility model has the following beneficial effects: The fixed blade is fixed to the presser foot plate. Through the cooperation of the drive cylinder, push rod, fixed sleeve, first swing arm, second swing arm and linkage, the movable blade can be driven to rotate around the shaft located on the presser foot plate. During the rotation, because the fixed blade has a cutting edge, when the movable blade passes the edge of the cutting edge, it can form a scissor-like cutting effect, accurately and quickly cutting the needle and thread. In addition, the sewing presser foot can be driven to rise and fall as a whole, so that the label on the sock is pressed down by the presser foot plate for sewing. The overall structure is stable, the thread cutting action is simple and efficient, and it is more suitable for use on the label attaching machine. It can also be adapted to the needle and thread cutting of different sewing methods, making it highly practical. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a front-view overall structural diagram of one embodiment of this application; Figure 2 This is a rear-view overall structural diagram of one embodiment of this application; Figure 3 This is a bottom-view overall structural diagram of one embodiment of this application; Figure 4 This is an overall structural diagram of a drive cylinder in one embodiment of this application; Figure 5 This is an assembly structure diagram of the mounting bracket and pressure foot plate in one embodiment of this application; Figure 6 This is an assembly structure diagram of the pressure foot plate, fixed blade, movable blade, and second swing arm in one embodiment of this application; Figure 7 This is an assembly structure diagram of the fixed blade and the movable blade in one embodiment of this application.

[0017] The components in the attached diagram are labeled as follows: 1-Mounting bracket, 2-Pressure foot plate, 21-Mounting groove, 22-Through opening, 23-Shaft rod, 24-Positioning rod, 25-First nut, 26-Second nut, 27-Leaning groove, 3-Fixed blade, 31-First front cutting position, 32-First rear cutting position, 4-Moving blade, 41-Second front cutting position, 42-Second rear cutting position, 5-Upper pressure plate, 6-Drive cylinder, 61-Push rod, 7-First swing arm, 71-Connecting rod, 8-Fixed sleeve, 81-Bearing, 9-Linkage component, 91-Transmission rod, 10-Second swing arm, 101-Lower connecting rod.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Detailed implementation plan: See below Figures 1-7 This utility model relates to a sewing presser foot for a label attaching machine. The sewing machine head of the label attaching machine has a fixed bracket on one side, comprising: Mount bracket 1 and fix it on the fixed frame; The presser foot plate 2 is fixed to the lower end of the mounting bracket 1. The presser foot plate 2 is provided with a shaft 23 and a through hole 22 for the needle bar to pass through. The fixed blade 3 is fixed on the pressure foot plate 2, and the fixed blade 3 is provided with a cutting edge corresponding to the through opening 22; The movable blade 4 is rotatably mounted on the shaft 23 and abuts against the fixed blade 3 above it; The drive unit, mounted on the mounting bracket 1, is used to drive the movable blade 4 to rotate around the shaft 23. The movable blade 4, at the edge of the cutting edge, works with the fixed blade 3 to cut the needle thread.

[0023] As a preferred embodiment of this example, please refer to Figure 1 , Figure 2 and Figure 4 As can be seen, the drive unit includes: Drive cylinder 6 is used to drive push rod 61 to move back and forth; The fixed sleeve 8 is fixed on the mounting bracket 1; Linkage component 9, with transmission rod 91 on linkage component 9, the transmission rod 91 passing through fixed sleeve 8; The first swing arm 7 has one end fixed to the transmission rod 91 and the other end provided with a connecting rod 71. One end of the push rod 61 is installed on the connecting rod 71. The second swing arm 10 is rotatably connected to the linkage 9 at one end, and a lower connecting rod 101 is provided at the other end, with the movable knife 4 installed on the lower connecting rod 101.

[0024] Working principle of the drive device: When it is necessary to drive the movable blade 4 to rotate around the shaft 23, the drive cylinder 6 works and drives the push rod 61 to move forward. Since the end of the push rod 61 is mounted on the connecting rod 71, and the connecting rod 71 is fixed on the first swing arm 7, the first swing arm 7 can be driven to rotate around the axis of the transmission rod 91. Since the transmission rod 91 is fixed on the first swing arm 7, the transmission rod 91 can rotate. Since the transmission rod 91 is fixed on the linkage 9, the linkage 9 can rotate around the axis of the transmission rod 91. Since the second swing arm 10 is set between the linkage 9 and the movable blade 4, the second swing arm 10 can be driven to swing, and the movable blade 4 can be driven to rotate around the shaft 23.

[0025] Then, please see Figure 1 and Figure 5 As can be seen, in this embodiment, the presser foot plate 2 is provided with a positioning rod 24, the upper pressure plate 5 is provided above the movable blade 4, the shaft 23 and the positioning rod 24 are used to cooperate in installing the upper pressure plate 5, the shaft 23 is provided with a first nut 25, the positioning rod 24 is provided with a second nut 26, and a first compression spring is provided between the first nut 25 and the upper pressure plate 5, and between the second nut 26 and the upper pressure plate 5.

[0026] Here, the positioning rod 24 is designed to work with the shaft 23 for positioning and installing the upper pressure plate 5. Furthermore, by providing a first nut 25 on the shaft 23 and a second nut 26 on the positioning rod 24, first compression springs can be installed between the first nut 25 and the upper pressure plate 5, and also between the second nut 26 and the upper pressure plate 5. This allows for better downward pressure on the upper pressure plate 5 and the movable blade 4, enabling the movable blade 4 to rotate more stably around the shaft 23.

[0027] Next, please refer to Figure 1 As can be seen, in this embodiment, the movable blade 4 is provided with a through hole for the lower connecting rod 101 to pass through, and the transmission rod 91 is fitted with a second compression spring on the outside. The upper and lower ends of the second compression spring abut against the linkage 9 and the movable blade 4, respectively.

[0028] Here, the second compression spring is provided to help press the movable blade 4, thereby allowing the movable blade 4 to rotate more stably around the shaft 23.

[0029] Then, please see Figure 3 To make the transmission rod 91 rotate more stably in the fixed sleeve 8, it can be seen that in this embodiment, the fixed sleeve 8 is provided with at least one bearing 81, the transmission rod 91 is arranged vertically and passes through the bearing 81.

[0030] As another preferred embodiment of this example, please refer to Figure 6 and Figure 7 As can be seen, the front and rear ends of the cutting edge are respectively provided with a first front cutting position 31 and a first rear cutting position 32, and the front and rear ends of the movable blade 4 are respectively provided with a second front cutting position 41 and a second rear cutting position 42. The second front cutting position 41 cuts the needle thread at the first front cutting position 31, and the second rear cutting position 42 cuts the needle thread at the first rear cutting position 32.

[0031] Here, by setting a first front cutting position 31 and a first rear cutting position 32 at the front and rear ends of the cutting edge respectively, and setting a second front cutting position 41 and a second rear cutting position 42 at the front and rear ends of the movable blade 4 respectively, two cutting positions for cutting the needle thread can be formed, which is suitable for use in label attaching machines with more different sewing methods.

[0032] Then, please see Figure 5 As can be seen, in this embodiment, the presser foot plate 2 is provided with a mounting groove 21 for matching and placing the presser foot plate 2, and the through opening 22 is provided at the bottom of the mounting groove 21.

[0033] More specifically, the pressure foot plate 2 is also provided with a clearance groove 27, which is located on the rear side of the mounting groove 21 and is connected to the mounting groove 21.

[0034] Here, after placing the presser foot 2 in the mounting groove 21, the presser foot 2 can be fixedly installed. The setting of the clearance groove 27 allows for easy insertion of fingers to remove the presser foot 2 from the mounting groove 21.

[0035] Note that in this embodiment, the labeling machine is equipped with a lifting drive mechanism for driving the fixed frame to rise and fall. By driving the fixed frame to rise and fall, the sewing presser foot located on the fixed frame can be lifted and lowered as a whole, thereby causing the presser foot plate 2 to press down the material below.

[0036] The sewing presser foot of the label attaching machine of this utility model is described above only as a preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. All equivalent structural transformations made under the inventive concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A sewing presser foot for a label attaching machine, wherein a fixing bracket is provided on one side of the sewing machine head of the label attaching machine, characterized in that, include: The mounting bracket is fixed to the mounting frame. A pressure foot plate is fixed to the lower end of the mounting bracket. The pressure foot plate is provided with a shaft and a through-hole for the needle bar to pass through. A fixed blade is fixed to the pressure foot plate, and the fixed blade is provided with a cutting edge corresponding to the through opening; The movable blade is rotatably mounted on the shaft and abuts against the fixed blade above it; A drive unit, mounted on the mounting bracket, is used to drive the movable blade to rotate around the shaft. The movable blade, positioned at the edge of the cutting edge, cooperates with the fixed blade to cut the needle thread.

2. The sewing presser foot of a label attaching machine according to claim 1, characterized in that, The driving device includes: Drive cylinder, used to drive the push rod to move back and forth; A fixed sleeve is fixed to the mounting bracket; A linkage component, wherein a transmission rod is provided on the linkage component, and the transmission rod passes through the fixed sleeve; The first swing arm has one end fixed to the transmission rod and the other end provided with a connecting rod, and one end of the push rod is installed on the connecting rod; The second swing arm has one end rotatably connected to the linkage, and the other end is provided with a lower connecting rod, on which the movable blade is mounted.

3. The sewing presser foot of a label attaching machine according to claim 2, characterized in that, The pressure foot plate is provided with a positioning rod, and an upper pressure plate is provided above the movable blade. The shaft and the positioning rod are used to cooperate in installing the upper pressure plate. A first nut is provided on the shaft, and a second nut is provided on the positioning rod. A first compression spring is provided between the first nut and the upper pressure plate, and between the second nut and the upper pressure plate.

4. The sewing presser foot of a label attaching machine according to claim 3, characterized in that, The movable blade has a through hole for the lower connecting rod to pass through, and a second compression spring is sleeved on the outside of the transmission rod. The upper and lower ends of the second compression spring abut against the linkage and the movable blade, respectively.

5. The sewing presser foot of a label attaching machine according to claim 4, characterized in that, The fixed sleeve is provided with at least one bearing, and the transmission rod is arranged vertically and passes through the bearing.

6. A sewing presser foot for a label attaching machine according to any one of claims 1-5, characterized in that, The front and rear ends of the cutting blade are respectively provided with a first front cutting position and a first rear cutting position, and the front and rear ends of the movable blade are respectively provided with a second front cutting position and a second rear cutting position. The second front cutting position cuts the needle thread at the first front cutting position, and the second rear cutting position cuts the needle thread at the first rear cutting position.

7. The sewing presser foot of a label attaching machine according to claim 6, characterized in that, The presser foot plate is provided with a mounting groove for matching and placing the presser foot plate, and the through opening is located at the bottom of the mounting groove.

8. The sewing presser foot of a label attaching machine according to claim 7, characterized in that, The pressure foot plate is also provided with a clearance groove, which is located behind the mounting groove and communicates with the mounting groove.

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