A round head machine transmission block rotating driving device

Abstract

The utility model discloses a kind of round head machine transmission block rotary drive devices, including shell, jumping fixed seat, needle bar drive mechanism, rotary drive mechanism and linkage execution mechanism, needle bar drive mechanism includes needle bar drive block, transmission block and transmission block black glue, transmission block black glue is fixed on transmission block, transmission block is adapted by bayonet, rotary drive mechanism includes jumping motor, jumping motor mounting seat, drive arm, connecting plate, swing arm, rotary shaft and jumping motor B plate, through the structure that transmission block, transmission block black glue and needle bar drive block bayonet adaptation in needle bar drive mechanism, the collaborative linkage of the collocation rotary drive mechanism and linkage execution mechanism, the bayonet disengagement or buckling timing and stroke of transmission block and needle bar drive block can be accurately controlled, to realize the accurate control to single needle bar movement state, avoid the embroidery quality problem caused by regulation and control deviation, it is favorable to further improve the operation scene adaptation range of round head machine.

Description

Technical Field

[0001] This utility model relates to the field of embroidery round head technology, specifically a rotary drive device for a round head machine transmission block. Background Technology

[0002] As a key piece of equipment in the embroidery industry for achieving refined and efficient embroidery operations, the needle bar drive and separation device of the embroidery head directly determines the embroidery accuracy, operational stability, and functional adaptability. Especially in embroidery scenarios that require the needle locking function (i.e., the machine keeps running but the needle bar stops moving), the performance of this device is particularly critical.

[0003] Existing devices lack a precise control mechanism for the movement of individual needle bars. When embroidery operations need to switch to a large stitch length embroidery mode or to achieve the function of needle bar "jumping" (i.e., the needle bar quickly switches embroidery positions without forming continuous stitches), the separation, engagement timing, and stroke of the needle bar and the transmission structure cannot be precisely controlled, resulting in insufficient embroidery stitch length accuracy and jerky jumping action, which in turn affects the quality of the embroidery and limits the range of applicable scenarios for round-head machines. Therefore, we need to propose a rotary drive device for the transmission block of a round-head machine. Utility Model Content

[0004] The purpose of this utility model is to provide a rotary drive device for a round-headed machine transmission block. By setting a structure in which the transmission block, the black adhesive of the transmission block and the needle bar drive block are matched with the locking slot, and coordinating the rotary drive mechanism and the linkage execution mechanism, the device achieves precise control over the timing and stroke of the locking slot between the transmission block and the needle bar drive block. This enables precise control over the movement state of a single needle bar, avoids embroidery quality problems caused by control deviations, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rotary drive device for a round-headed machine transmission block includes: a machine housing, a jump fixing base, a needle bar drive mechanism, a rotary drive mechanism, and a linkage execution mechanism; the needle bar drive mechanism includes a needle bar drive block, a transmission block, and a transmission block adhesive, the transmission block adhesive being fixed on the transmission block, and the transmission block and the needle bar drive block being adapted to each other via a bayonet; the rotary drive mechanism includes a jump motor, a jump motor mounting base, a drive arm, a connecting plate, a swing arm, a rotary shaft, and a jump motor B plate, the output end of the jump motor being drively connected to the drive arm, the end of the drive arm away from the jump motor being connected to the connecting plate, and the end of the connecting plate away from the drive arm being fixed to the swing arm.

[0007] Preferably, the linkage actuator includes a jumping rod, one end of which is fixedly connected to the rotating shaft, and the other end is linked to the transmission block, which is used to drive the transmission block to disengage or engage with the needle bar drive block under the drive of the rotating shaft.

[0008] Preferably, it also includes a manual locking mechanism, which is located at the bottom of the B plate of the jump motor. The manual locking mechanism includes a manual handle and a manual drive arm. One end of the manual drive arm is engaged with the drive arm, and the other end is integrally formed with the manual handle. Two sets of limiting rubber posts are also fixedly connected to the bottom of the B plate of the jump motor.

[0009] Preferably, it also includes a reset limiting mechanism, which includes a return spring, one end of which is connected to the swing arm and the other end of which is connected to the protrusion on the jump fixing seat.

[0010] Preferably, the top of the jumping fixed seat is provided with a bearing support mechanism, the bearing support mechanism includes a bearing fixed seat and a bearing, the bearing fixed seat is fixed to the jumping fixed seat by screws, the bearing is embedded in the inner hole of the bearing fixed seat, and the rotating shaft passes through and is interference-fitted to the inner ring of the bearing.

[0011] Preferably, a stepped pin is inserted at the linkage between the connecting plate and the drive arm.

[0012] Preferably, the swing arm is fixedly sleeved on the rotating shaft, and the rotating shaft is rotatably engaged with the jump fixing seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a structure in the needle bar drive mechanism where a transmission block, a black adhesive layer on the transmission block, and a locking mechanism for the needle bar drive block are fitted together. Combined with the coordinated linkage of the rotary drive mechanism and the linkage execution mechanism, it can precisely control the timing and stroke of the locking mechanism between the transmission block and the needle bar drive block. This allows for precise control of the movement state of a single needle bar, avoiding embroidery quality problems caused by control deviations, and further improving the adaptability of round-head machines to various operating scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the transmission block rotation drive device of this utility model;

[0016] Figure 2 This is a schematic diagram of the drive device structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the rotary drive mechanism of this utility model;

[0018] Figure 4This is a schematic diagram of the manual locking mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the bearing mounting base, bearing, and return spring of this utility model.

[0020] In the diagram: 10. Needle bar drive block; 20. Transmission block (black rubber); 30. Transmission block; 40. Jump rod; 50. Swing arm; 60. Jump fixing seat; 70. Connecting plate; 80. Rotating shaft; 90. Step pin; 100. Jump motor mounting seat; 110. Drive arm; 120. Jump motor; 130. Jump motor B plate; 140. Housing; 150. Manual handle; 160. Manual drive arm; 170. Limiting rubber post; 180. Bearing fixing seat; 190. Bearing; 200. Return spring. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This utility model provides a technical solution:

[0023] A rotary drive device for a round-head machine transmission block includes: a housing 140, a jump fixing seat 60, a needle bar drive mechanism, a rotary drive mechanism, and a linkage execution mechanism. By setting the housing 140 to provide a stable mounting carrier for each mechanism, and the jump fixing seat 60 to position and support core components such as the needle bar drive mechanism and the rotary drive mechanism, the device's overall structural stability is ensured, and the transmission accuracy is prevented from being affected by installation misalignment. At the same time, the housing 140 can provide dustproof and external collision protection for the internal components. The mounting holes of the jump fixing seat 60 are designed according to the standard dimensions of the round-head machine head, ensuring that the device can accurately adapt to the overall assembly requirements of the round-head machine.

[0024] The needle bar drive mechanism includes a needle bar drive block 10, a transmission block 30, and a transmission block black rubber 20. The transmission block black rubber 20 is fixed on the transmission block 30, and the transmission block 30 and the needle bar drive block 10 are fitted together via a bayonet. By setting the transmission block black rubber 20 to buffer the hard impact when the transmission block 30 and the needle bar drive block 10 are fitted together, and by using the bayonet structure to achieve precise matching between the two, the wear of the components is reduced and the movement state of the needle bar drive block 10 can be precisely controlled. The transmission block black rubber 20 is made of wear-resistant rubber material, which can extend its service life. The bayonet is designed with an arc-shaped structure, which makes the disengagement and engagement of the transmission block 30 and the needle bar drive block 10 smoother and avoids jamming.

[0025] The rotary drive mechanism includes a jump motor 120, a jump motor mounting base 100, a drive arm 110, a connecting plate 70, a swing arm 50, a rotating shaft 80, and a jump motor B plate 130. The output end of the jump motor 120 is connected to the drive arm 110 for transmission. The end of the drive arm 110 away from the jump motor 120 is connected to the connecting plate 70, and the end of the connecting plate 70 away from the drive arm 110 is fixed to the swing arm 50. By setting the jump motor mounting base 100 and the jump motor B plate 130 to fix the jump motor 120 together, and the drive arm 110, the connecting plate 70, and the swing arm 50 to form a continuous transmission link, the effect of ensuring lossless power transmission of the jump motor 120 and avoiding the impact of transmission breakage on the operation of the device is achieved. The drive arm 110 and the connecting plate 70 are fastened with bolts, and the swing arm 50 and the rotating shaft 80 are circumferentially fixed by a key connection, which further ensures the stability of power transmission and prevents relative slippage.

[0026] The linkage actuator includes a jump rod 40, one end of which is fixedly connected to the rotating shaft 80, and the other end is linked to the transmission block 30. It is used to drive the transmission block 30 to disengage or engage with the needle bar drive block 10 under the drive of the rotating shaft 80. By setting the jump rod 40 as the linkage medium between the rotating shaft 80 and the transmission block 30, the rotational power of the rotating shaft 80 is accurately transmitted to control the action of the locking pin (locking pin disengagement) and normal drive (locking pin engagement) functions. The jump rod 40 is made of high-strength alloy material, which can withstand long-term transmission force without deformation. It is linked with the transmission block 30 through a pin hole to ensure the synchronization of their actions.

[0027] The device also includes a manual locking mechanism located at the bottom of the B plate 130 of the jump motor. The manual locking mechanism includes a manual handle 150 and a manual drive arm 160. One end of the manual drive arm 160 is engaged with the drive arm 110, and the other end is integrally formed with the manual handle 150. Two sets of limiting rubber posts 170 are also fixedly connected to the bottom of the B plate 130 of the jump motor. By engaging the manual drive arm 160 with the drive arm 110, the motor rotation is locked. The manual handle 150 simplifies operation, while the limiting rubber posts 170 restrict the travel of the manual drive arm 160, thus preventing accidental motor rotation and avoiding excessive manual operation that could damage components. The surface of the manual handle 150 has anti-slip textures for easy gripping and force application by the operator. The limiting rubber posts 170 have a certain degree of elasticity and can act as a buffer when in contact with the manual drive arm 160, reducing damage from hard impacts.

[0028] The device also includes a reset limiting mechanism, which includes a return spring 200. One end of the return spring 200 is connected to the swing arm 50, and the other end is connected to the protrusion on the jump fixing seat 60. By setting the return spring 200 to generate a pull force after the swing arm 50 moves, the swing arm 50 is pulled back to its initial position, thus ensuring that the device can quickly reset after a single drive and prepare for the next action. The elasticity parameters of the return spring 200 are designed according to the weight and stroke of the swing arm 50, which ensures that the swing arm 50 can be pulled back quickly while avoiding excessive elasticity that would cause the swing arm 50 to impact other components when resetting.

[0029] The top of the jump mounting base 60 is provided with a bearing support mechanism, which includes a bearing mounting base 180 and a bearing 190. The bearing mounting base 180 is fixed to the jump mounting base 60 with screws, and the bearing 190 is embedded in the inner hole of the bearing mounting base 180. The rotating shaft 80 passes through and is interference-fitted with the inner ring of the bearing 190. By setting the bearing mounting base 180 to securely fix the bearing 190, and the interference fit between the rotating shaft 80 and the bearing 190 reduces rotational friction, the smoothness of the rotation of the rotating shaft 80 is improved and the service life of the rotating shaft 80 is extended. The bearing 190 is a deep groove ball bearing, which can withstand the radial force of the rotating shaft 80. The inner hole of the bearing mounting base 180 and the bearing 190 adopt an transition fit to ensure that the bearing 190 is installed firmly and does not affect its rotational performance.

[0030] A stepped pin 90 is inserted at the linkage between the connecting plate 70 and the drive arm 110. The stepped pin 90 enhances the connection strength between the connecting plate 70 and the drive arm 110, preventing relative displacement between the two during transmission. This ensures stable power transmission and avoids transmission failure due to loose connection. The stepped structure of the stepped pin 90 restricts its axial movement within the hole, preventing the pin from falling out. The pin is made of high-strength steel, which has good shear resistance and is suitable for long-term transmission stress requirements.

[0031] The swing arm 50 is fixedly sleeved on the rotating shaft 80, and the rotating shaft 80 is rotatably engaged with the jump fixing seat 60. By setting the swing arm 50 and the rotating shaft 80 to be fixedly sleeved, synchronous rotation is achieved. At the same time, the rotating shaft 80 and the jump fixing seat 60 are flexibly engaged, which ensures that the power of the swing arm 50 is accurately transmitted to the rotating shaft 80 and avoids the effect of relative sliding between the two on the driving accuracy. The fixed position of the swing arm 50 and the rotating shaft 80 is located in the middle of the rotating shaft 80, so that the rotating shaft 80 is subjected to balanced force and reduces the risk of bending and deformation of the rotating shaft 80 due to uneven force.

[0032] Working principle: When the round-head machine needs to lock the needle (the machine is running but the needle is not moving), the jump motor 120 starts and reverses, and its output end drives the drive arm 110 to rotate around the motor output shaft; the drive arm 110 pulls the swing arm 50 through the connecting plate 70, so that the swing arm 50 drives the rotating shaft 80 to rotate synchronously in the bearing 190; when the rotating shaft 80 rotates, it drives the jump rod 40 to make a pendulum motion, and the jump rod 40 further pushes the transmission block 30, so that the transmission block 30 (including the transmission block black glue 20) disengages from the latch of the needle bar drive block 10. At this time, the needle bar loses the transmission drive, and the needle is locked.

[0033] When unlocking is needed to resume normal embroidery or to achieve needle bar jumping, the jumping motor 120 rotates forward, while the drive arm 110, connecting plate 70, swing arm 50, and rotating shaft 80 drive in the opposite direction as described above. The jumping rod 40 drives the transmission block 30 to reset, causing the transmission block 30 to re-engage with the needle bar drive block 10. The needle bar drive block 10 moves with the transmission block 30 to achieve normal embroidery drive, or, under the intermittent forward and reverse control of the motor, drives the needle bar to quickly switch positions (jump), meeting the needs of large stitch spacing embroidery. If it is necessary to maintain the locked needle state for a long time, the operator rotates the manual handle 150, causing the manual drive arm 160 to engage with the drive arm 110, restricting the rotation of the drive arm 110, and thus preventing the jumping motor 120 from rotating back; at the same time, the limiting rubber post 170 limits the maximum rotation stroke of the manual drive arm 160 to avoid excessive operation and damage to components, ensuring the stability of the locked needle state. When the jump motor 120 stops driving, the return spring 200 generates a pull force, pulling the swing arm 50 back to its initial position. The swing arm 50 drives the rotating shaft 80, the jump rod 40, and the transmission block 30 to reset synchronously, preparing for the next locking or unlocking action and ensuring the continuous cyclic operation of the device.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary drive device for a round-head machine transmission block, characterized in that, include: Housing (140), jump fixing base (60), needle bar drive mechanism, rotary drive mechanism and linkage actuator; The needle bar drive mechanism includes a needle bar drive block (10), a transmission block (30), and a transmission block black glue (20). The transmission block black glue (20) is fixed on the transmission block (30), and the transmission block (30) and the needle bar drive block (10) are adapted to each other through a bayonet. The rotary drive mechanism includes a jump motor (120), a jump motor mounting base (100), a drive arm (110), a connecting plate (70), a swing arm (50), a rotating shaft (80), and a jump motor B plate (130). The output end of the jump motor (120) is connected to the drive arm (110) for transmission. The end of the drive arm (110) away from the jump motor (120) is connected to the connecting plate (70). The end of the connecting plate (70) away from the drive arm (110) is fixed to the swing arm (50).

2. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: The linkage actuator includes a jump rod (40), one end of which is fixedly connected to the rotating shaft (80), and the other end is linked to the transmission block (30). It is used to drive the transmission block (30) to disengage or engage with the needle bar drive block (10) under the drive of the rotating shaft (80).

3. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: It also includes a manual locking mechanism, which is located at the bottom of the B plate (130) of the jump motor. The manual locking mechanism includes a manual handle (150) and a manual drive arm (160). One end of the manual drive arm (160) is engaged with the drive arm (110), and the other end is integrally formed with the manual handle (150). Two sets of limiting rubber posts (170) are also fixedly connected to the bottom of the B plate (130) of the jump motor.

4. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: It also includes a reset limiting mechanism, which includes a return spring (200), one end of which is connected to the swing arm (50), and the other end is connected to the protrusion on the jump fixing seat (60).

5. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: The top of the jump fixing seat (60) is provided with a bearing support mechanism, which includes a bearing fixing seat (180) and a bearing (190). The bearing fixing seat (180) is fixed to the jump fixing seat (60) by screws. The bearing (190) is embedded in the inner hole of the bearing fixing seat (180). The rotating shaft (80) passes through and is interference-fitted to the inner ring of the bearing (190).

6. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: The connecting plate (70) and the drive arm (110) are connected by a stepped pin (90).

7. The rotary drive device for a round head machine transmission block according to claim 1, characterized in that: The swing arm (50) is fixedly sleeved on the rotating shaft (80), and the rotating shaft (80) is rotatably engaged with the jump fixing seat (60).

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