Upper pulling machine with crochet needle protecting mechanism

Abstract

The invention belongs to the technical field of upper pulling machines, and particularly relates to an upper pulling machine with a crochet needle protecting mechanism, which comprises a machine body, a mounting part is formed on one side of the machine body, a feeding disc assembly is arranged at the upper end of the mounting part, an avoiding space is formed between the lower end of the feeding disc assembly and the side wall of the mounting part, and a crochet needle rod is arranged in the machine body. One end of the crochet needle rod is connected with a power source I for driving the crochet needle rod to move, the other end of the crochet needle rod extends out of the machine body and is connected with a crochet needle, a crochet needle protecting seat is mounted on the side surface of the machine body, a cavity for the crochet needle rod to move up and down is formed in the crochet needle protecting seat, and a shaft sleeve piece is mounted on the periphery of the crochet needle rod. By installing the crochet needle protecting base on the side face of the machine body, the stability of the crochet needle rod and the crochet needle in the movement process can be improved, through the matched design of the shaft sleeve piece and the sliding block, the existing movement track of the crochet needle rod cannot be affected, the supporting and limiting effects can be provided for the end of the crochet needle rod, and the movement stability of the lengthened crochet needle rod is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of the puller, in particular to a puller with a needle protection mechanism. BACKGROUND

[0002] The puller is a special sewing machine suitable for athletic shoes, California insole stitching, work gloves, medium-thick fur, diving suits or stuffed toys and other objects. The puller mainly provides the power required for operation through an electric motor. The rotation of the electric motor is converted into linear reciprocating motion, rotary motion or other required forms of motion for the puller through a transmission mechanism, such as a belt transmission mechanism, a transmission shaft and an eccentric transmission mechanism, to drive the main shaft to drive the needle rod shaft and the needle hook shaft to produce a sewing action.

[0003] As disclosed in a feeding disc mounting structure of a puller with patent number CN201921527387.0, the puller includes a machine shell, a feeding shaft and a feeding disc. The mounting structure includes a mounting table protruding from one side of the machine shell. The feeding shaft is arranged on the mounting table. The mounting table has an extension protruding from one side of the mounting table and extending outside the mounting table. The feeding disc is rotatably connected to the extension. The design of the extension provides a gap between the lower part of the work piece and the side wall of the mounting table, so that the work piece is not blocked and normal sewing can be ensured.

[0004] Because the extension moves the mounting position of the feeding disc to the side away from the machine body, the length of the upper needle hook also needs to be lengthened to cooperate with the machine needle to sew the work piece clamped between the feeding disc and the presser foot wheel. However, the lengthened needle hook will cause poor motion stability, thereby affecting the synchronous motion between the machine needle and the needle hook, resulting in unqualified sewing quality and affecting normal sewing. SUMMARY

[0005] The purpose of the present application is to provide a puller with a needle protection mechanism, which solves the problem of unstable motion of the existing needle hook through the needle protection seat.

[0006] The purpose of the present application is achieved in that a puller with a needle hook protection mechanism, comprising a machine body, one side of the machine body is formed with a mounting part, the upper end of the mounting part is provided with a feeding disc assembly, the lower end of the feeding disc assembly and the side wall of the mounting part are formed with a avoiding space, a needle hook rod is arranged in the machine body, one end of the needle hook rod is connected with a power source one for driving its movement, the other end of the needle hook rod extends out of the machine body and is connected with a needle hook, a needle hook protection seat is installed on the side of the machine body, a cavity for the up-down movement of the needle hook rod is formed in the needle hook protection seat, a shaft sleeve is installed on the outer periphery of the needle hook rod, and sliding blocks are rotatably connected to the two sides of the shaft sleeve.

[0007] Preferably, the two sides of the shaft sleeve are respectively formed with circular rotating parts, and the outer periphery of the circular rotating parts is rotatably connected with the sliding blocks, so as to swing the shaft sleeve and the needle hook rod up and down.

[0008] Preferably, the two ends of the shaft sleeve are respectively formed with limiting parts, and the two side faces of the limiting parts are respectively formed with limiting planes one, and the two side walls of the cavity are formed with limiting planes two matched with the limiting planes one, so as to limit the left-right swing of the shaft sleeve.

[0009] Preferably, the shaft sleeve is located on the outer periphery of the end of the needle hook rod away from the machine body, and the vertical sliding groove is located on the end of the needle hook protection seat away from the machine body.

[0010] Preferably, the lower end face of the needle hook protection seat is installed with a lower cover plate, the rear side of the lower cover plate is formed with an oil return part, one end of the oil return part extends into the machine body, and the upper end face of the needle hook protection seat is installed with an upper cover plate.

[0011] Preferably, the feeding disc assembly comprises a feeding disc and a pressing wheel arranged on one side thereof, a transmission shaft is arranged in the mounting part, the upper end of the transmission shaft is connected with the feeding disc, and the lower end of the transmission shaft is connected with a power source two through a transmission mechanism.

[0012] Preferably, the upper end of the mounting part is provided with a transmission seat extending away from the machine body, a transmission gear set is arranged in the transmission seat, the upper end of the transmission shaft is connected with the transmission gear set at the inner end, and the feeding disc is connected with the transmission gear set at the outer end.

[0013] Preferably, the side of the machine body is provided with an extension frame, and the side of the extension frame is installed with the needle hook protection seat.

[0014] Preferably, the machine body is integrally formed with a partition plate, so that the machine body is divided into an upper mounting cavity and a lower mounting cavity, the upper mounting cavity is provided with a transmission assembly, the lower mounting cavity is integrally formed with a motor fixing seat, a power source two is mounted on the rear side of the motor fixing seat, and the power source two is transversely mounted in the lower mounting cavity; a plurality of motor fixing holes are formed in the motor fixing seat, and a mounting hole for the motor shaft to extend out is formed in the motor fixing seat; a bearing is arranged between the outer periphery of the motor shaft and the motor fixing seat.

[0015] Preferably, the lower end of the feeding disc is connected with a transmission shaft, the end of the transmission shaft is provided with a bevel gear one, the end of the motor shaft of the power source two is provided with a bevel gear two matched with the bevel gear one; the upper end face of the partition plate is integrally formed with a recess, and an oil outlet hole is formed in the recess.

[0016] The present application has the following prominent and beneficial technical effects compared with the prior art: 1. In the present application, the hook needle seat is mounted on the side of the machine body, which can improve the stability of the hook needle rod and the hook needle movement, and the cooperation of the shaft sleeve and the sliding block can provide support and limiting effect for the end of the hook needle rod without affecting the existing movement track of the hook needle rod, thereby ensuring the stability of the movement of the lengthened hook needle rod.

[0017] 2. The design of the integral machine body prevents the oil in the upper mounting cavity from dripping outside during actual work, compared with the gap between the base and the machine body in the prior art, oil can flow out from the gap, but the integral machine body eliminates the assembly gap between the partition plate and the machine body, so there is no problem of oil flowing out from the gap, which greatly improves the sealing performance, reduces the assembly steps and reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The present application is a three-dimensional structure diagram Figure 1 .

[0019] Figure 2 The present application is a three-dimensional structure diagram Figure 2 .

[0020] Figure 3 The present application is a three-dimensional structure diagram

[0021] Figure 4 The present application is a three-dimensional structure diagram

[0022] Figure 5 The present application is a three-dimensional structure diagram Figure 1 .

[0023] Figure 6 The present application is a three-dimensional structure diagram Figure 2 .

[0024] Figure 7 It is the structure schematic view of the bottom of the body.

[0025] Figure 8 It is the structure schematic view of the top of the body.

[0026] Figure 9 It is the sectional structure schematic view of the utility model.

[0027] The figure mark: 1 - body;2 - installation part;3 - feeding disc assembly;4 - avoiding space;5 - hook needle rod;6 - hook needle guard;7 - cavity;8 - shaft sleeve;9 - sliding block;10 - vertical sliding slot;11 - circular rotation part;12 - limiting part;13 - limiting plane one;14 - limiting plane two;15 - lower cover plate;16 - upper cover plate;17 - feeding disc;18 - press wheel;19 - transmission shaft;20 - transmission mechanism;21 - power source two;22 - transmission seat;23 - transmission gear set;24 - extension frame;25 - oil return part;30 - partition;31 - upper installation cavity;32 - lower installation cavity;33 - transmission assembly;34 - motor fixing seat;35 - motor fixing hole;36 - motor shaft;37 - installation hole;38 - bearing;39 - bevel gear one;40 - bevel gear two;41 - recess;42 - oil outlet hole. DETAILED DESCRIPTION

[0028] The specific embodiments of the application are described in further detail below in combination with the drawings.

[0029] As Figures 1-9 shown, a puller with a hook needle protection mechanism, including body 1, one side of body 1 is formed with installation part 2, the upper end of installation part 2 is provided with feeding disc assembly 3, the lower end of feeding disc assembly 3 and the side wall of installation part 2 are formed with avoiding space 4, the lower part of the work piece can be prevented from interfering with installation part 2 during the sewing process through this avoiding space 4, so as to be blocked and affect normal sewing, therefore, the larger the avoiding space 4 is, the more beneficial it is to sew large volume objects, therefore, in order to increase the avoiding space, as Figure 6 shown, the diameter of the feeding disc can be increased, or as Figure 5 shown, a set of transmission gears is added, so that the position where the sewing object is placed between the feeding disc and the press wheel moves away from the side of body 1, thereby increasing the horizontal width of the avoiding space between the lower part of feeding disc assembly 3 and the side wall of installation part 2, so as to facilitate the sewing operation.

[0030] However, when the feeding position is far away, the length of the upper hook needle also needs to be lengthened to cooperate with the machine needle to sew the workpiece clamped between the feeding disc and the presser foot. The machine body 1 is provided with a hook needle rod 5, one end of the hook needle rod 5 is connected with a power source one for driving the movement of the hook needle rod 5, the other end of the hook needle rod 5 extends out of the machine body 1 and is connected with a hook needle. Since the movement track of the hook needle is relatively complex, the power source one needs to drive the hook needle rod to move forward and backward, up and down, left and right. The movement principle of the hook needle rod is the prior art, and therefore will not be repeated here.

[0031] The lengthened hook needle will cause the stability of the movement to be poor, thereby affecting the synchronous movement between the machine needle and the hook needle, causing the hook to miss the line, resulting in unqualified sewing quality, and affecting normal sewing. Therefore, in the present application, a hook needle protection seat 6 is installed on the side of the machine body 1, a cavity 7 for the up and down movement of the hook needle rod 5 is formed in the hook needle protection seat 6, a shaft sleeve 8 is installed on the outer periphery of the hook needle rod 5, the power source one can drive the hook needle rod 5 to move forward and backward and swing left and right in the shaft sleeve 8, slide blocks 9 are rotatably connected to the two sides of the shaft sleeve 8, vertical sliding grooves 10 for the up and down sliding of the slide blocks 9 are formed on the two sides of the cavity 7. The stability of the movement of the hook needle rod and the hook needle can be improved. Through the cooperation design of the shaft sleeve 8 and the slide blocks 9, the existing movement track of the hook needle rod can be not affected, and the end of the hook needle rod can be supported and limited, thereby ensuring the stability of the movement of the lengthened hook needle rod.

[0032] The two sides of the shaft sleeve 8 are respectively formed with circular rotating parts 11, the outer periphery of the circular rotating parts 11 is rotatably connected with the slide blocks 9, so as to swing the shaft sleeve 8 and the hook needle rod 5 up and down. The power source one can drive the hook needle rod 5 to swing up and down in the slide blocks 9 through the circular rotating parts 11 of the shaft sleeve 8. The power source one can also drive the hook needle rod 5 to slide up and down in the vertical sliding grooves 10 through the slide blocks 9.

[0033] The two ends of the shaft sleeve 8 are respectively formed with limiting parts 12, the two sides of the limiting parts 12 are respectively formed with limiting planes one 13, the two side walls of the cavity 7 are formed with limiting planes two 14 matched with the limiting planes one 13, so as to limit the left and right swinging of the shaft sleeve 8 and improve the stability.

[0034] The lengthened hook needle rod 5 has poor stability at the end far away from the machine body, therefore the shaft sleeve 8 is arranged on the outer periphery of the end of the hook needle rod 5 far away from the machine body 1, and the vertical sliding grooves 10 are located at the end of the hook needle protection seat 6 far away from the machine body 1, so as to increase the stability of the end of the hook needle rod 5.

[0035] The lower end face of the needle guard needle seat 6 is provided with a lower cover plate 15 for closing the lower port of the cavity 7, and the rear side of the lower cover plate 15 is formed with an oil return part 25, one end of the oil return part 25 extending into the machine body 1 and being inclined to the side, so that the oil in the needle guard needle seat 6 can flow back into the machine body, reducing the risk of oil leakage.

[0036] The feeding disc assembly 3 comprises a feeding disc 17 and a pressing wheel 18 arranged on one side of the feeding disc 17, and a feeding space is arranged between the feeding disc 17 and the pressing wheel 18.

[0037] The upper end of the mounting part 2 is provided with a transmission seat 22 extending away from the machine body 1, and the transmission seat 22 is provided with a transmission gear set 23, the upper end of the transmission shaft 19 is connected with the inner end of the transmission gear set 23, and the feeding disc 17 is connected with the outer end of the transmission gear set 23, so that the position of the placed seam between the feeding disc and the pressing wheel moves away from the machine body 1, thereby increasing the transverse width of the avoiding space between the lower side of the feeding disc assembly 3 and the side wall of the mounting part 2, facilitating the sewing operation.

[0038] As shown in the drawings, Figure 2 In the case that the needle hook rod is too long, the extension frame 24 is arranged on the side of the machine body 1, and the needle guard needle seat 6 is arranged on the side of the extension frame 24, so that the stability of the needle hook rod 5 end can be ensured when the stability of the needle guard needle seat 6 is ensured, and the instability caused by excessively lengthening the size of the needle guard needle seat 6 can be effectively prevented.

[0039] The machine body 1 is integrally formed with a partition plate 30, so that the machine body 1 is divided into an upper mounting cavity 31 and a lower mounting cavity 32, the transmission assembly 33 is arranged in the upper mounting cavity 31, and the motor fixing seat 34 is formed in the lower mounting cavity 32, the power source two 21 is arranged on the rear side of the motor fixing seat 34 and is horizontally arranged in the lower mounting cavity 32, so that the internal space of the bottom of the machine body 1 is utilized to reduce the occupied space outside.

[0040] The utility model discloses a design of integral machine body, so that in actual working process, the oil in the upper mounting cavity 31 will not drip to the outside, compared with the gap between the base and the machine body in the prior art, the oil will flow out from the gap, but the integral machine body makes the partition plate 30 and the machine body 1 will not have the assembly gap, so there will be no problem of oil flowing out from the gap, and the assembly steps are reduced, and the production cost is reduced.

[0041] Combining Figures 7-9 The motor fixing seat 34 is provided with a plurality of motor fixing holes 35, so that the motor is fixed on the motor fixing seat 34 through fasteners. The motor fixing seat 34 is provided with an installation hole 37 for the motor shaft 36 to extend out.

[0042] Specifically Figure 8 The outer periphery of the motor shaft 36 and the motor fixing seat 34 are provided with a bearing 38, which provides axial support force for rotation and improves stability during rotation.

[0043] The lower end of the feeding disc 17 is connected with a transmission shaft 19, the end of the transmission shaft 19 is provided with a bevel gear one 39, the motor shaft 36 of the power source two 21 is provided with a bevel gear two 40 matched with the bevel gear one 39, the bevel gear one 39 and the bevel gear two 40 are vertically arranged, so that the transversely arranged power source two is driven to the vertically arranged transmission shaft 19.

[0044] The upper end surface of the partition plate 30 is formed with a recessed part 41 for collecting oil liquid dripping on the partition plate 30, the recessed part 41 is provided with an oil outlet hole 42, so that the oil liquid accumulated in the partition plate 30 is cleaned through the oil outlet hole 42.

[0045] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A banding machine having a needle guard mechanism, characterized by, The utility model provides a needle hooking device, including body (1), one side of body (1) is shaped with installation part (2), the upper end of installation part (2) is provided with the feeding tray subassembly (3), the lower end of feeding tray subassembly (3) is shaped with the avoidance space (4) between the side wall of installation part (2), be provided with needle hooking rod (5) in body (1), one end of needle hooking rod (5) is connected with power source one for driving its movement, the other end of needle hooking rod (5) extends body (1) and is connected with needle hooking, the side of body (1) is installed with the needle hooking protection seat (6), the cavity (7) for the up-down movement of needle hooking rod (5) is set up in the needle hooking protection seat (6), the outer periphery of needle hooking rod (5) is installed with the shaft sleeve (8), the both sides of shaft sleeve (8) are rotatably connected with sliding block (9), the both sides of cavity (7) are set up with the vertical sliding slot (10) for the up-down sliding of sliding block (9).

2. The banding machine with a guard hook mechanism according to claim 1, characterized in that: The both sides of shaft sleeve (8) are shaped with circular rotating part (11) respectively, the outer periphery of circular rotating part (11) is rotatably connected with sliding block (9), so as to swing up and down for shaft sleeve (8), needle hooking rod (5).

3. The harness puller machine having a needle guard mechanism according to claim 2, characterized in that: The both ends of shaft sleeve (8) are shaped with limiting portion (12) respectively, the both sides of limiting portion (12) are shaped with limiting plane one (13) respectively, the both side walls of cavity (7) are shaped with limiting plane two (14) matched with limiting plane one (13), so as to limit swing left and right for shaft sleeve (8).

4. The harness puller machine having a needle guard mechanism according to claim 1, characterized in that: Shaft sleeve (8) is located at the outer periphery of the one end of needle hooking rod (5) away from body (1), and the vertical sliding slot (10) is located at the one end of needle hooking protection seat (6) away from body (1).

5. The harness puller machine having a needle guard mechanism according to claim 4, characterized in that: The lower end surface of needle hooking protection seat (6) is provided with a lower cover plate (15), and the rear side of lower cover plate (15) is formed with an oil return portion (25) extending into body (1).

6. The banding machine with a guard hook mechanism according to claim 1, characterized in that: The feeding tray subassembly (3) comprises a feeding tray (17) and a pressure roller (18) arranged on one side of the feeding tray (17), and the installation part (2) is provided with a transmission shaft (19), the upper end of the transmission shaft (19) is connected with the feeding tray (17), and the lower end of the transmission shaft (19) is connected with a power source two (21) through a transmission mechanism (20).

7. The harness puller machine having a needle guard mechanism according to claim 6, characterized in that: The upper end of the installation part (2) is provided with a transmission seat (22) extending away from the body (1), the transmission seat (22) is provided with a transmission gear set (23) therein, the upper end of the transmission shaft (19) is connected with the inner end of the transmission gear set (23), and the feeding tray (17) is connected with the outer end of the transmission gear set (23).

8. The harness puller machine having a needle guard mechanism of claim 1, wherein: The side of the body (1) is provided with an extension frame (24), and the extension frame (24) is provided with the needle hooking protection seat (6) on the side.

9. The harness puller machine having a needle guard mechanism of claim 1, wherein: The machine body (1) is integrally formed with a partition plate (30), so that the machine body (1) is divided into an upper mounting cavity (31) and a lower mounting cavity (32), the upper mounting cavity (31) is provided with a transmission assembly (33), the lower mounting cavity (32) is formed with a motor fixing seat (34), the rear side of the motor fixing seat (34) is mounted with a power source two (21), the power source two (21) is horizontally mounted in the lower mounting cavity (32); a plurality of motor fixing holes (35) are formed in the motor fixing seat (34), and a mounting hole (37) for the motor shaft (36) to extend out is formed in the motor fixing seat (34); a bearing (38) is arranged between the outer periphery of the motor shaft (36) and the motor fixing seat (34).

10. The harness puller machine having a needle guard mechanism according to claim 9, characterized in that: The lower end of the feeding disc (17) is connected with a transmission shaft (19), the end of the transmission shaft (19) is provided with a bevel gear one (39), the end of the motor shaft (36) of the power source two (21) is mounted with a bevel gear two (40) matched with the bevel gear one (39); the upper end surface of the partition plate (30) is formed with a recessed part (41), and the recessed part (41) is provided with an oil outlet hole (42).

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