A small tufting machine

Abstract

The invention aims to provide a small tufting machine with high adjustment, high compatibility and high productivity in a simple structure. The machine has a frame mechanism, a yarn guide mechanism, a needle mechanism, a hook mechanism, a base fabric feeding mechanism and an electric control mechanism. The bottom of the base fabric feeding mechanism is spread in a horizontal direction. On one side of the base fabric, the needle mechanism and the yarn guide mechanism are arranged to implant yarn into the base fabric. On the other side of the base fabric, the hook mechanism is arranged to form loop pile or cut pile.

Description

Technical Field

[0001] This invention relates to the textile industry, specifically to the tufting industry, and particularly to a small tufting machine for manufacturing pile fabrics such as carpets. Background Technology

[0002] Pile fabrics have long been a necessity in people's daily lives. Tufting machines are currently widely used in the manufacture of these fabrics. However, existing tufting machines often produce large sizes, requiring different products to be tufted on different machines, making them unsuitable for small-batch orders and custom sizes.

[0003] To improve this situation, Patent Document 1 discloses a tufting machine that adds a needle holder adjustment mechanism, a hook holder adjustment mechanism, and a table adjustment mechanism, and an external transmission mechanism, so as to cooperate with the moving mechanism to adjust the position according to the size of the carpet to be processed.

[0004] Existing technical documents: Patent documents: Patent document 1: Chinese Patent Publication CN115852602 A. Summary of the Invention

[0005] The problem the invention aims to solve: However, the tufting machine in Patent Document 1 still has many shortcomings in actual use. Specifically, the power transmission path between the needle holder mechanism and the frame mechanism is complex, resulting in high energy consumption, which is not conducive to energy saving and mass production, and also leads to the overall large size of the equipment. In addition, the yarn guiding mechanism is formed in the form of a flat yarn guide frame, with the yarn far from the yarn guide plate, making it prone to bounce, and the large size of the mechanism causes obvious vibration when the machine speed is high.

[0006] To address the aforementioned problems, the present invention aims to provide a small tufting machine that can achieve high adjustability, high compatibility, and high productivity with a simple structure.

[0007] Technical means to solve the problem: The present invention provides a small tufting machine, characterized in that it comprises a frame mechanism and a yarn guiding mechanism, a needle mechanism, a hook mechanism, a base fabric feeding mechanism, and an electrical control mechanism mounted on the frame mechanism; the bottom of the base fabric feeding mechanism extends in a generally horizontal direction, and on one side of the base fabric, there is a needle mechanism for inserting yarn into the base fabric and a yarn guiding mechanism for supplying yarn to the needle mechanism, and on the other side of the base fabric, there is a hook mechanism for forming loop pile or cut pile.

[0008] Invention effects: This invention provides a small tufting machine that can be widely used in production of various scales and customized in various sizes. Attached Figure Description

[0009] Figure 1 This is a front view showing the overall structure of a small tufting machine according to an embodiment of the present invention; Figure 2 It shows along Figure 1 The sectional view of the small tufting machine is shown by cutting along line AA. Figure 3 It is shown Figure 1 A side view of the frame mechanism of the small tufting machine shown; Figure 4 It is shown Figure 1 Side view of the bottom fabric feeding mechanism of the small tufting machine shown; Figure 5 It is shown Figure 1 A schematic diagram of the base fabric feeding process for a small tufting machine is shown. Figure 6 It is shown Figure 1 The front view of the yarn guiding mechanism of the small tufting machine shown; Figure 7 It is shown Figure 1 A side view of the transmission mechanism of the small tufting machine shown; Figure 8 It is shown Figure 1 A side view of the hook mechanism of the small tufting machine shown; Figure 9 It is shown Figure 1 Side view of the table mechanism and hook mechanism of the small tufting machine shown; Figure 10 It is shown Figure 1 Front view of the table mechanism and hook mechanism of the small tufting machine shown; Symbol explanation: 1-Bottom fabric feeding mechanism; 2-Frame mechanism; 3-Electrical control mechanism; 4-Yarn guiding mechanism; 5-Needle mechanism; 6-Hook mechanism. Detailed Implementation

[0010] The present invention will be further described below with reference to the following embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the invention. The same or corresponding reference numerals in the figures denote the same components, and repeated descriptions are omitted. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0011] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Furthermore, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0012] This invention can provide a small tufting machine, such as Figure 1 and Figure 2 As shown, the device includes: a frame mechanism 2, a yarn guiding mechanism 4, a needle mechanism 5, a hook mechanism 6, a base fabric feeding mechanism 1, and an electrical control mechanism 3. The yarn guiding mechanism 4, needle mechanism 5, hook mechanism 6, base fabric feeding mechanism 1, and electrical control mechanism 3 are all mounted on the frame mechanism 2. Above the base fabric, which is spread out in a generally horizontal direction, there is a needle mechanism 5 for inserting yarn (also called pile) into the base fabric, and a yarn guiding mechanism 4 for supplying yarn to the needle mechanism 5. Below the base fabric, there is a hook mechanism 6 for forming loop pile or cut pile. Furthermore, in the following description, unless otherwise specified, "up and down" refers to... Figure 1 The up and down directions in the middle.

[0013] Specifically, such as Figure 3 As shown, the frame mechanism 2 includes: a pair of frame uprights 2-1, which are L-shaped when viewed from the side and are vertically installed parallel to each other and spaced apart; and a plurality of transverse frames 2-2, 2-3, which are sandwiched between the pair of frame uprights 2-1 in a horizontally extending manner. More specifically, the transverse frames 2-2 are installed at the bottom of the pair of frame uprights 2-1 to form a stable support structure with the pair of frame uprights 2-1, and the transverse frames 2-3 are respectively installed at the top and middle of the pair of frame uprights 2-1, for suspending the yarn guiding mechanism 4 and needle mechanism 5 (described later), and supporting the hook mechanism 6 and bottom fabric feeding mechanism 1 (described later), etc. In some embodiments, the transverse frames 2-2, 2-3 are formed as beams and may be made of two different types of aluminum profiles, or they may not be distinguished.

[0014] Also, such as Figure 1 As shown, the electrical control mechanism 3 is installed on one side of the frame mechanism 2, preferably integrally formed with the frame mechanism 2, and controls the yarn guiding mechanism 4, needle mechanism 5, hook mechanism 6 and bottom fabric feeding mechanism 1 through computer programs, etc.

[0015] Also, such as Figure 4As shown, the base fabric feeding mechanism 1 is mounted on the frame mechanism 2. Specifically, a roll of fabric with the base fabric wound on rollers is mounted to one end of the frame mechanism 2 via a base fabric rod mounting seat 1-1. The base fabric on the roll is fed sequentially via guide rollers 1-2, 1-4, 1-7, 1-10 and licker rollers 1-6, 1-9. Furthermore, in some embodiments, these rollers and the base fabric rod mounting seat are arranged with axial length dimensions that are the same as or slightly larger than the width of the base fabric, so that their axes face the same direction (in this embodiment, this is to align with the width of the base fabric). Figure 1 The guide rollers 1-7 and the licker rollers 1-6 are arranged parallel to each other (orthogonal to the paper surface). More specifically, in some embodiments, the guide rollers 1-7 and the licker rollers 1-6 are arranged on both sides of the frame mechanism 2 to spread the base fabric horizontally. This horizontally spread base fabric area is the operating area for the needle mechanism 5 and the hook mechanism 6 (described later) to perform looping and cutting of the pile. However, this is not a limitation, and the arrangement of the guide rollers and licker rollers can be adjusted according to specific circumstances, as long as the base fabric operating area is ensured. On both sides of the base fabric operating area, a front base fabric motor 1-3 and a front base fabric reducer 1-5 for driving the licker rollers 1-6, and a rear base fabric motor 1-11 and a rear base fabric reducer 1-8 for driving the licker rollers 1-9 are respectively provided. The licker rollers 1-6 and 1-9 rotate under the power drive of the motors and reducers on the front and rear sides, thereby cooperating with each other to realize the transport of the base fabric.

[0016] Next, combined Figure 5 Further explanation of the backing fabric feeding mechanism 1. In some embodiments, a device for clamping and tightening the backing fabric is also provided at one end of the backing fabric feeding mechanism 1. Specifically, the base 1-12 of this device is mounted on the transverse frame 2-3, which is an aluminum profile, and the installation position can be adjusted according to the width of the carpet, for example, by means of existing technologies such as bolting to achieve relative loading and unloading. A cylinder connecting seat 1-13 is mounted on the base 1-12, and a telescopic cylinder 1-14 is mounted on the cylinder connecting seat 1-13. A clamp 1-16 and a protrusion 1-17 are mounted on the tip of the telescopic cylinder 1-14, and a clamping cylinder 1-15 is mounted on the clamp 1-16. More specifically, the clamp 1-16 and the protrusion 1-17 clamp and fix one end of the backing fabric under the drive of the clamping cylinder 1-15, and the telescopic cylinder 1-14 can be adjusted in length according to preset requirements, thereby tightening the backing fabric to a specified tightness.

[0017] Furthermore, a needle mechanism 5 and a yarn guiding mechanism 4 are provided above the base fabric. The yarn guiding mechanism 4 is used to supply yarn to the needle mechanism 5. Figure 1 As shown, the yarn guiding mechanism 4 is mounted on one side of the top of the frame mechanism 2 via the transverse frame 2-3. The connection method between the two is not limited and can employ known methods such as welding or bolting. Figure 6As shown, the yarn guiding mechanism 4 includes a yarn collecting unit and a lower yarn guiding unit. Since the yarn guiding mechanism 4 is an axisymmetric structure, the following description only considers a single-sided structure. The yarn collecting unit includes: a yarn guide frame aluminum plate 4-8 extending vertically; a pair of yarn collecting plate supports 4-9 mounted above the yarn guide frame aluminum plate 4-8; a yarn collecting plate 4-11 supported by the pair of yarn collecting plate supports 4-9; and a ball bearing aluminum seat 4-10 mounted between the pair of yarn collecting plate supports 4-9. In some embodiments, after the yarn is collected by the yarn collecting plate 4-11, the yarn tension is maintained by the ball bearing aluminum seat 4-10, and then the yarn is fed to the yarn guiding unit via the yarn guide frame aluminum plate 4-8 and the nylon tube.

[0018] The yarn guiding unit is installed below the yarn collecting unit, specifically connected to the yarn guide frame aluminum plate 4-8 of the yarn collecting unit. More specifically, the yarn guiding unit includes: a plurality of yarn guiding devices 4-7 arranged in a V-shape symmetrical about the yarn guiding mechanism 4 for passing the yarn through; a sub-yarn guiding plate 4-1 located below each yarn guiding device 4-7; a main yarn guiding plate 4-2 located at the bottom of the plurality of yarn guiding devices 4-7; a roller 4-4 located below the main yarn guiding plate 4-2; roller yarn guiding plates 4-3 installed on both sides of the roller 4-4; an adjustable yarn guiding plate 4-5 located below the roller 4-4; and a needle beam yarn guiding plate 4-6 located below the adjustable yarn guiding plate 4-5 and connected to the needle beam. In some embodiments, each row of yarn guiding devices 4-7 is in the horizontal direction ( Figure 1 Multiple yarn guiding devices 4-7 are arranged in a left-right direction. Simultaneously, each row of yarn guiding devices 4-7 is recessed towards the center at a predetermined interval relative to the adjacent row above, thus forming a V-shaped inclined arrangement. Furthermore, in some embodiments, the roller 4-4 is used to ensure consistent yarn tension under the roller; for example, it can be a cylindrical rotating part, but it is not limited to this, as long as it can perform feeding, drafting, and output functions in the textile machinery. Also, in some embodiments, when the yarn guiding mechanism 4 is working, the yarn is fed to the yarn guiding device 4-7 of the yarn guiding unit via the yarn collecting unit with a certain yarn tension. It then passes through the branch yarn guiding plate 4-1 and the main yarn guiding plate 4-2 before being transmitted to the roller yarn guiding plate 4-3. The roller 4-4 then ensures consistent yarn tension under the roller, and the yarn is then transmitted to the adjustable yarn guiding plate 4-5, and finally to the needle beam 5-11 via the needle beam yarn guiding plate 4-6.

[0019] Furthermore, the needle mechanism 5 is a mechanism that inserts yarn into the base fabric by reciprocating the needle in the vertical direction. Figure 7As shown, the needle mechanism 5 includes a needle moving unit and a needle overall moving unit. The needle moving unit is used to reciprocate the needle in the vertical direction. Specifically, the needle moving unit includes: a main motor 5-1, mounted on the main head 5-13 to provide driving force; a pulley 5-2 connected to and driven by the main motor 5-1; an eccentric sleeve having an eccentric drive shaft connected and linked to the pulley 5-2, and a pair of eccentric components coaxially mounted on the eccentric drive shaft in a manner that rotates in opposite directions; a pair of push rod connectors 5-7, each connected to and linked to the pair of eccentric components; a push rod connecting plate 5-8, connected to the pair of push rod connectors 5-7; a pair of push rods 5-9, each connected to the push rod connecting plate 5-8; a pair of push rod seats 5-10, each slidably penetrated by the pair of push rods 5-9; and a needle beam 5-11, connected to the pair of push rod seats 5-10.

[0020] In some embodiments, the pair of eccentric components have identical structures. Taking one of the eccentric components as an example, it includes: an eccentric sprocket seat 5-3, which is penetrated by an eccentric drive shaft; a sprocket 5-4, which is rotatably mounted on the eccentric sprocket seat 5-3; an eccentric wheel 5-5, which is rotatably mounted on the sprocket 5-4; and an eccentric connecting rod 5-6, which is rotatably mounted on the eccentric wheel 5-5. Specifically, the pulley 5-2 is movably connected to the eccentric drive shaft of the eccentric sleeve, and a pair of push rod connectors 5-7 are movably connected to a pair of eccentric components (specifically, eccentric connecting rods 5-6) of the eccentric sleeve, thereby forming a complete power transmission path.

[0021] More specifically, in some embodiments, the main motor 5-1 generates driving force, which is transmitted to the eccentric drive shaft via belt drive through pulley 5-2. The power is then transmitted sequentially to sprocket 5-4, eccentric wheel 5-5, and eccentric connecting rod 5-6 via eccentric sprocket seat 5-3, and finally to push rod connector 5-7. Push rod connector 5-7, push rod connecting plate 5-8, and push rod 5-9 move together as a whole under the action of power, causing push rod 5-9 to slide up and down within push rod seat 5-10, ultimately driving needle beam 5-11 to move up and down. Furthermore, since the pair of eccentric components are configured in opposite directions, after power is transmitted to sprocket 5-4, the sprocket drive causes the pair of eccentric components to rotate in opposite directions. This opposite rotation counteracts the inertial force generated by the eccentric rotation, thus avoiding uneven force distribution caused by the eccentric components and ensuring stable up and down movement of the needle beam and needle.

[0022] The needle mechanism 5 has a needle-moving unit for moving the entire needle mechanism 5. The needle-moving unit includes: a connecting plate 5-22 vertically mounted on the main head 5-13; a vertical moving motor 5-16 and a moving reducer 5-15 mounted on the connecting plate 5-22; a gear 5-14 mounted on the moving reducer 5-15; a rack 5-23 meshing with the gear 5-14 and displacing relative to it; a connecting plate 5-21 horizontally mounted on the connecting plate 5-22; a horizontal moving motor 5-17 and a moving reducer 5-18 mounted on the connecting plate 5-21; a gear 5-19 mounted on the moving reducer 5-18; and a rack 5-20 meshing with the gear 5-19 and displacing relative to it. The vertical movement of the entire needle mechanism 5 is achieved by the vertical moving motor 5-16, the moving reducer 5-15, the gear 5-14, and the rack 5-23 mounted on the connecting plate 5-22. Figure 7 The needle mechanism 5 is adjusted horizontally (up and down) by means of a horizontal moving motor 5-17, a moving reducer 5-18, a gear 5-19, and a rack 5-20 mounted on the connecting plate 5-21, thereby achieving the overall horizontal (up and down) movement of the needle mechanism 5. Figure 7 The displacement can be adjusted (left or right). Additionally, in some embodiments, the needle mechanism 5 also includes a support beam 5-12 mounted on the side of the main head 5-13 for support.

[0023] Furthermore, a hook mechanism 6 is provided above the base fabric. The hook mechanism 6 includes a hook moving unit 7 and a hook overall moving unit. The following will be combined with... Figure 8 , 9 A detailed description is provided. Specifically, the hook-based moving unit includes: a mounting plate 6-6 horizontally mounted on the transverse frame 2-3 and movable relative to it; a mounting plate 6-3 vertically mounted on the transverse frame 2-3 and movable relative to it; a motor 6-1 and a reducer 6-2 mounted through the mounting plate 6-3 and used to provide power; a gear 6-4 mounted on the reducer 6-2; and a rack 6-5 meshing with the gear 6-4 and mounted on the transverse frame 2-3. In some embodiments, the power generated by the motor 6-1 drives the gear 6-4 and rack 6-3 through the reducer 6-2 in a rack and pinion transmission, thereby driving the mounting plates 6-3 and 6-6 in a predetermined direction (…). Figure 8 The hook mechanism 6 moves in a direction perpendicular to the paper. Thus, the hook mechanism 6 can move as a whole in coordination with the needle mechanism 5 as required.

[0024] Furthermore, the hook moving unit 7, used for manufacturing pile, includes: a hook beam base 7-14 mounted on the mounting plate 6-6; a pair of hook beam shaft supports 7-13 mounted on the hook beam base 7-14; a hook beam shaft 7-6 mounted horizontally between the pair of hook beam shaft supports 7-13; a hook beam support 7-8 mounted on the hook beam shaft 7-6; a hook beam 7-9 mounted on the hook beam support 7-8; a modular hook 7-10 mounted on the hook beam 7-9 and used to hook pile in conjunction with a needle; a rocker arm 7-7 connected to one end of the hook beam shaft 7-6; a connecting rod 7-5 connected to the other end of the rocker arm 7-7; an eccentric wheel 7-4 connected to the connecting rod 7-5; and a motor 7-3 connected to the eccentric wheel 7-4 and mounted on the mounting plate 6-6. In some embodiments, the motor 7-3 generates power to drive the eccentric wheel 7-4 to rotate, and transmits the power to the rocker arm 7-7 via the connecting rod 7-5. The power then passes sequentially through the hook beam shaft 7-6, hook beam support 7-8, and hook beam 7-9, finally reaching the module hook 7-10, thus cooperating with the needle of the needle mechanism 5. Alternatively, in some embodiments, the hook mechanism 6 can also be driven by a motor to power a servo cylinder 7-1, achieving up-and-down movement through the extension and retraction of the servo cylinder. Furthermore, in some embodiments, a support plate 7-12 and a cylinder 7-11 are mounted on the hook beam shaft support 7-13 on the side of the pair of hook beam shaft support seats 7-13 furthest from the motor 7-3. Additionally, in some embodiments, a pair of support assemblies 7-2 with auxiliary support can also be formed.

[0025] like Figure 10As shown, the hook mechanism 6 also includes a looping unit and a cutting unit. Specifically, in the looping unit, the hook motor 7-15 is fixed to the mounting plate 6-6 via a base to generate power; the eccentric wheel 7-16 is connected to the hook motor 7-15 and moves under its drive; the connecting rod 7-17 is connected to the eccentric wheel 7-16; the rocker arm 7-18 is connected to the connecting rod 7-17; the hook beam shaft 7-19 is connected to the rocker arm 7-18; and one end of the rocker arm 7-20 is connected to the hook beam shaft 7-19. The hook beam rocker foot 7-30 is configured as a crank-connecting rod. The top end of the hook beam rocker foot 7-30 is connected to the other end of the rocker arm 7-20 via a hook connecting rod 7-21, and a hook assembly 7-22 is mounted on this top end. Furthermore, the bottom end of the hook beam rocker foot 7-30 is mounted on the rocker shaft 7-29 in a fan-shaped motion centered on the rocker shaft 7-29. The rocker shaft 7-29 is fixed to the mounting plate 6-6 via another base. In some embodiments, when making loop pile products, the drive hook motor 7-15 controls the needle beam and hook beam via the electronic control mechanism 3 to form a pattern on the base fabric. Specifically, the hook motor 7-15 generates driving force to rotate the eccentric wheel 7-16, and transmits the power to the rocker arm 7-18 via the connecting rod 7-17, and then to the rocker arm 7-20 via the hook beam shaft 7-19, thus causing the rocker arm 7-20 to perform a fan-shaped motion under the influence of the eccentric motion. This fan-shaped motion is further transmitted to the hook beam rocker foot 7-30 via the hook connecting rod 7-21. The hook beam rocker foot then performs a fan-shaped motion with the rocker shaft 7-29 as the center, which in turn drives the hook assembly 7-22 installed on it to move, thus achieving looping.

[0026] In the shearing unit, a knife motor 7-28 is fixed to a mounting plate 6-6 via another base to generate power; a knife eccentric wheel 7-27 is connected to the knife motor 7-28 and moves under its drive; a connecting rod 7-26 is connected to the knife eccentric wheel 7-27, a knife rocker arm 7-25 is connected to the connecting rod 7-26, one end of the knife beam shaft 7-24 is connected to the knife rocker arm 7-25, and the other end of the knife beam shaft 7-24 is mounted near the top of the hook beam rocker foot 7-30. A knife beam seat 7-23 is provided on the knife beam shaft 7-24, and a knife assembly is mounted on the knife beam seat 7-23. In some embodiments, when making circular cut products, the knife motor 7-28 is driven, and the needle beam, hook beam, and knife beam are controlled by the electronic control mechanism 3 to form a pattern on the base fabric. Specifically, the blade motor 7-28 generates driving force to rotate the blade eccentric wheel 7-27, and transmits the power to the blade rocker arm 7-25 through the connecting rod 7-26. Thus, the blade rocker arm 7-25, driven by the eccentric motion, performs a fan-shaped motion through the hook beam rocker foot 7-30, thereby driving the blade assembly mounted on it to move and achieve circular cutting.

[0027] Based on the above, the small tufting machine according to the present invention does not require a swing arm assembly to form a transmission path. Instead, it directly transmits power to the eccentric drive shaft via a pulley. The positive and negative sprockets within the eccentric sleeve drive a pair of eccentric components to rotate in opposite directions, canceling out the centrifugal force and inertial force generated during movement. Then, the circular motion is converted into the up-and-down motion of the needle beam via a connecting rod. Thus, there is no need for a swing arm and rocker arm to cooperate in driving the needle beam up and down, greatly simplifying the power transmission path of the needle mechanism, while also making the equipment structure simple and its size reduced.

[0028] Furthermore, in existing devices, the yarn guide frame is laid out horizontally, the yarn is far from the guide plate, and its excessive size causes significant vibration when the machine is running at high speed. In this invention, the yarn guide frame is formed in a V-shape and is vertically installed near the needle mechanism, close enough to the machine body, and is also equipped with side supports. Therefore, the small tufting machine according to this invention operates with virtually no vibration, significantly increasing machine speed and noticeably improving equipment output.

[0029] Furthermore, in this invention, the hook mechanism cleverly integrates the looping unit and the cutting unit by setting a crank connecting rod, which not only adds the loop cutting function, but also changes the eccentric motion of the hook into a fan-shaped swing motion, thereby enabling more functions to be achieved with a simple mechanism.

[0030] Furthermore, this invention incorporates multiple electric lifting devices, making adjustments more convenient and faster, and maximizing its adaptability to the production of products of various special sizes. Additionally, the electrical control mechanism is directly mounted on the machine body, resulting in an aesthetically pleasing and easy-to-operate design, while also making the equipment more compact.

[0031] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely one specific embodiment of the present invention and are not limited to the scope of protection of the present invention. The present invention can be embodied in various forms without departing from its essential characteristics. Therefore, the embodiments described herein are for illustrative purposes only and not for limitation. Since the scope of the present invention is defined by the claims rather than the specification, all changes falling within the scope defined by the claims, or their equivalents, should be understood to be included in the claims. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A small tufting machine, characterized in that, It has a frame structure and a yarn guiding mechanism, a needle mechanism, a hook mechanism, a base fabric feeding mechanism, and an electrical control mechanism installed on the frame structure; The bottom of the base fabric feeding mechanism extends in a generally horizontal direction. On one side of the base fabric, there is a needle mechanism for inserting yarn into the base fabric and a yarn guiding mechanism for supplying yarn to the needle mechanism. On the other side of the base fabric, there is a hook mechanism for forming loop pile or cut pile. The yarn guiding mechanism forms an axisymmetric structure and includes a yarn collecting unit and a yarn guiding unit located below the yarn collecting unit. The yarn collecting unit includes: a yarn guide frame extending in a vertical direction; a pair of yarn collecting plate supports mounted above the yarn guide frame; a yarn collecting plate supported by the pair of yarn collecting plate supports; and a ball bearing seat mounted between the pair of yarn collecting plate supports. The yarn guiding unit includes: a plurality of yarn guiding devices arranged in a V-shape relative to the axis of symmetry of the yarn guiding mechanism and used to allow the yarn to pass through; a sub-yarn guiding plate located below each yarn guiding device; a main yarn guiding plate located at the bottom of the plurality of yarn guiding devices; a roller located below the main yarn guiding plate; roller guiding plates installed on both sides of the roller; an adjustable yarn guiding plate located below the roller; and a needle beam guiding plate located below the adjustable yarn guiding plate and connected to the needle beam. After being collected by the yarn collecting plate, the yarn tension is maintained by the ball bearing seat, and then it is fed to the yarn guiding unit with a certain yarn tension via the yarn guide frame and nylon tube. After passing through the branch yarn guide plate and the main yarn guide plate, it is transmitted to the roller yarn guide plate. The rollers then ensure consistent yarn tension under the rollers, and the yarn is then transmitted to the adjustable yarn guide plate, and finally to the needle beam yarn guide plate. The needle mechanism includes a needle moving unit and a needle overall moving unit; The needle moving unit includes: a main motor mounted on the main head to provide driving force; a pulley connected to and driven by the main motor; an eccentric sleeve having an eccentric drive shaft and a pair of eccentric components; a pair of push rod connectors respectively connected to and driven by the pair of eccentric components; a push rod connecting plate connected to the pair of push rod connectors; a pair of push rods respectively connected to the push rod connecting plate; a pair of push rod seats slidably penetrated by the pair of push rods; and a needle beam connected to the pair of push rod seats. The eccentric drive shaft is connected to and drives the pulley. The pair of eccentric components are coaxially mounted on the eccentric drive shaft in such a way that they rotate in opposite directions.

2. The small tufting machine according to claim 1, characterized in that, One of the pair of eccentric components includes: an eccentric sprocket seat through which an eccentric drive shaft passes; a sprocket rotatably mounted on the eccentric sprocket seat; an eccentric wheel rotatably mounted on the sprocket; and an eccentric connecting rod rotatably mounted on the eccentric wheel.

3. The small tufting machine according to claim 1, characterized in that, The needle integral moving unit includes: a connecting plate arranged vertically on the main body head; a vertical moving motor and a moving reducer mounted on the connecting plate; a gear mounted on the moving reducer; a rack that meshes with the gear and is displaced relative to it; a connecting plate arranged horizontally on the connecting plate; a horizontal moving motor and a moving reducer mounted on the connecting plate; a gear mounted on the moving reducer; and a rack that meshes with the gear and is displaced relative to it.

4. The small tufting machine according to claim 1, characterized in that, The hook mechanism includes a hook moving unit and a hook overall moving unit; The hook integral moving unit includes: a mounting plate that is horizontally mounted on a transverse frame and can be relatively movable; a mounting plate that is vertically mounted on the transverse frame and can be relatively movable; a motor and a reducer that are mounted through the mounting plate and are used to provide power; a gear mounted on the reducer; and a rack that meshes with the gear and is mounted on the transverse frame.

5. The small tufting machine according to claim 4, characterized in that, The hook moving unit includes: a hook beam base mounted on a mounting plate; a pair of hook beam shaft supports mounted on the hook beam base; a hook beam shaft mounted horizontally between the pair of hook beam shaft supports; a hook beam support mounted on the hook beam shaft; a hook beam mounted on the hook beam support; a modular hook mounted on the hook beam and used to hook out fluff in conjunction with a needle; a rocker arm connected to one end of the hook beam shaft; a connecting rod connected to the other end of the rocker arm; an eccentric wheel connected to the connecting rod; and a motor connected to the eccentric wheel and mounted on the mounting plate.

6. The small tufting machine according to claim 4, characterized in that, The hook mechanism also includes a loop pile unit and a cut pile unit; The loop unit includes: a hook motor, which is fixed to the mounting plate via a base; an eccentric wheel, which is connected to the hook motor; a connecting rod, which is connected to the eccentric wheel; a rocker arm, which is connected to the connecting rod; a hook beam shaft, which is connected to the rocker arm, forming a crank-connecting rod structure and having a hook assembly mounted on its top end; and a rocker arm, one end of which is connected to the hook beam shaft. The shearing unit includes: a cutter motor, which is fixed to the mounting plate via another base; a cutter eccentric wheel, which is connected to the cutter motor; a connecting rod, which is connected to the cutter eccentric wheel; a cutter rocker arm, which is connected to the connecting rod; a cutter beam shaft, one end of which is connected to the cutter rocker arm, and the other end is installed near the top of the hook beam rocker foot, and is provided with a cutter beam seat; and a cutter beam seat on which a cutter kit is installed.

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