A gold sheet feeding device capable of accurately feeding gold sheets

Abstract

The present invention discloses a gold sheet feeding device that can accurately feed gold sheets. A transmission assembly for driving the action of a paddle assembly is provided between a rocker arm and a driving connecting rod. The rocker arm is driven by a driving motor. The rocker arm cooperates with the first driving surface of an adjusting arm constituting a driving groove through a rocker shaft of the transmission assembly, and can drive the paddle rod of the paddle assembly to feed the gold sheet until the needle hole of the gold sheet is accurately delivered to the bottom of the machine needle. The paddle rod of the paddle assembly is driven back by cooperating with the rocker shaft of the transmission assembly and the second driving surface of the driving groove, thereby driving the paddle rod to reciprocate and feed the gold sheet. During the feeding process, since the elastic body always drives and presses the movable adjusting arm, the first driving surface of the movable adjusting arm can elastically adhere to the rocker shaft, which can effectively and elastically transmit power to the paddle rod, so that the paddle rod can smoothly, accurately and controllably feed the gold sheet to a preset position. Optimized structure. Convenient debugging and installation, reduced and eliminated tolerance effects, and avoided backlash, noise and impact.

Description

Technical Field

[0001] The invention relates to a gold sheet feeding device capable of accurately feeding sheets. Background Art

[0002] The gold sheet feeding device is used to transport gold sheets. The existing feeding device paddle structure generally includes two schemes.

[0003] In solution 1, a driving link is connected to the paddle lever. A U-shaped or Y-shaped socket is located above the driving link, which mates with a swing shaft or bearing mounted on the driving rocker. A motor drives the rocker lever to reciprocate, and the reciprocating rocker lever, via the bearing or swing shaft, reciprocates with the inner walls of the two arms of the U-shaped or Y-shaped socket, driving the paddle lever to advance and retract the paddle. Because the rocker lever needs to reciprocate, the swing shaft or bearing needs to slide and rotate simultaneously within the U-shaped or Y-shaped socket. Therefore, a certain clearance is required between the swing shaft or bearing and the U-shaped or Y-shaped socket to allow the swing shaft or bearing to slide and rotate simultaneously within the U-shaped or Y-shaped socket. This clearance structure results in the reciprocating swing shaft or bearing engaging the inner wall of one arm of the U-shaped or Y-shaped socket and then moving in the opposite direction. This can cause the swing shaft or bearing to collide with the inner wall of the other arm when switching to the opposite arm, resulting in unstable operation of the paddle lever, a certain amount of hysteresis, and noise.

[0004] In addition, during the production and processing process, tolerances must be set for the U-shaped or Y-shaped sockets, and the power from the drive motor is transmitted to the paddle lever through multiple transmission components such as the swing arm and transmission connecting rod assembly installed on the motor shaft. The production of multiple transmission components requires tolerances. The superposition of multiple tolerances causes uncertainty in the final movement of the paddle lever. Even for products produced in the same batch, the final position of the final assembled drive paddle lever is difficult to predict, that is, the superposition of multiple tolerances and reverse clearance makes it difficult to accurately control and predict the position and retraction position of the drive motor that drives the paddle lever through the transmission assembly after assembly. Relevant technical personnel are required to repeatedly debug the corresponding feeding devices one by one. This structure causes greater work pressure and burden on debugging.

[0005] In order to reduce the difficulty of debugging and solve the problem of accurately delivering the needle hole of the gold piece to the embroidery piece position just below the needle, the setting lever is usually debugged to deliver the piece to a position close to the preset position. The final delivery of the piece is achieved by setting a torsion spring. Figure 3 In the figure, mark 1a drives the pick lever to the preset position, that is, the needle hole of the sequin can be accurately transported to the embroidery position just below the needle.

[0006] Solution 2: The driving motor drives the rocker arm and the transmission structure to drive the paddle lever to retract, and the paddle lever drives the paddle lever to advance the piece through the return spring to achieve the feeding of the piece.

[0007] Both of the above solutions require a spring to feed the sheets. As the gold sheet belt is continuously conveyed, the tension varies depending on the belt size at different stages. The required feeding force also varies depending on the size and specifications of the gold sheets being conveyed. Furthermore, the force driving the paddle lever also varies depending on the age of the spring. Therefore, using a spring to feed the sheets can lead to problems such as misfeeding, uncontrollable feeding accuracy, and unstable feeding. Summary of the Invention

[0008] The present invention aims to solve the problems existing in the use of an existing gold sheet feeding device and provides a feeding device which can accurately feed gold sheets.

[0009] The technical solution for solving the existing problems of the present invention is: a gold sheet feeding device that can accurately feed sheets, comprising a mounting plate, a base plate, at least one group of paddle assemblies, a driving motor corresponding to each group of paddle assemblies, and a rocker arm mounted on the driving motor shaft, each group of paddle assemblies comprising a driving connecting rod rotatably mounted on the mounting plate, a paddle rod rotatably connected to the driving connecting rod, a transmission assembly that drives the paddle assembly to move is provided between the rocker arm and the driving connecting rod. As an improvement, the transmission assembly comprises a swing shaft, a transmission arm that cooperates with the swing shaft to drive the paddle assembly, a stationary arm and a movable adjusting arm are provided on the transmission arm, a driving groove that can accommodate the swing shaft is provided between the adjusting arm and the stationary arm, the adjusting arm is located on the inner wall of the driving groove and is provided with a first driving surface that cooperates with the swing shaft to drive the paddle assembly to feed the sheet to a preset position; the stationary arm is located on the inner wall of the driving groove and is provided with a second driving surface that cooperates with the swing shaft to drive the paddle assembly to retract, and the adjusting arm is provided with an elastic body that drives the movable adjusting arm to press against the swing shaft.

[0010] As a further improvement, the transmission arm is arranged on the driving connecting rod, and the swing shaft is arranged on the swing rod.

[0011] As a further improvement, the opening direction of the driving slot is toward the rear side, and the rear side is the direction in which the paddle lever retracts; the stationary arm is provided with a bent arm adapted to the second driving surface of the driving slot.

[0012] As a further improvement, the transmission arm and the driving connecting rod are coaxially fixed on the first rotating shaft, and the first rotating shaft can be rotatably mounted on the mounting plate.

[0013] As a further improvement, the adjustment arm can slide to cooperate with the transmission arm; a guide structure for guiding the adjustment arm to slide is provided between the adjustment arm and the transmission arm; the elastomer drives the adjustment arm to slide relative to the transmission arm and cooperate with the swing shaft; and an installation groove for installing the elastomer is provided on the transmission arm.

[0014] As a further improvement, the transmission arm is connected to a guide sleeve for guiding the sliding movement of the adjustment arm.

[0015] As a further improvement, a protective frame for protecting the transmission assembly is provided on the mounting plate, and the drive motor is mounted on the protective frame.

[0016] As a further improvement, the guide structure includes a guide groove and a guide column arranged between the adjustment arm and the transmission arm.

[0017] As a further improvement, the motor shaft of the drive motor is also connected to a first swing arm that drives the cutter assembly to slice. The cutter assembly includes a cutter shaft arranged on a mounting plate, a cutter arranged at one end of the cutter shaft, and a drive block arranged at the other end of the cutter shaft. A cutter transmission structure is provided between the drive block and the first swing arm.

[0018] As a further improvement, the swing shaft is provided with a bearing that matches the driving groove provided on the transmission arm.

[0019] Compared with the prior art, the present invention has the following advantages: a transmission assembly is provided between the rocker arm and the drive connecting rod to drive the paddle assembly. The transmission assembly includes a rocker shaft, a transmission arm that cooperates with the rocker shaft to drive the paddle assembly, and a stationary arm and a movable adjustment arm. The adjustment arm includes a first drive surface that cooperates with the rocker shaft to drive the paddle assembly to a preset position. The stationary arm includes a second drive surface that cooperates with the rocker shaft to drive the paddle assembly back. The adjustment arm includes an elastic body that presses the movable adjustment arm against the rocker shaft. The rocker arm is driven by a drive motor. The rocker arm cooperates with the first drive surface of the adjustment arm that forms a drive slot through the rocker shaft of the transmission assembly to drive the paddle rod of the paddle assembly to a preset position, thereby accurately delivering the needle hole of the sequin to directly below the sequin needle. The rocker shaft of the transmission assembly cooperates with the second drive surface of the drive slot to drive the paddle rod of the paddle assembly back, thereby driving the paddle rod to reciprocate and deliver the sequin. During the film feeding process, the elastic body constantly presses the movable adjustment arm, allowing the first driving surface of the movable adjustment arm to elastically contact the swing shaft. This effectively and elastically transmits power to the paddle lever, allowing the paddle lever to smoothly, accurately, and controllably feed the film to the preset position. This completely eliminates the torsion spring that drives the paddle lever, optimizing the structure.

[0020] The elastic drive pressure adjustment arm of the elastomer cooperates with the swing shaft, which can greatly facilitate debugging and installation. It can effectively eliminate the gap between the swing shaft and the drive slot during the feeding and retracting process without affecting the rotation and sliding of the swing during operation, effectively reducing and eliminating the influence of tolerances, avoiding backlash, noise and impact, and greatly reducing the difficulty and cost of manufacturing and debugging.

[0021] The sheet feeding device structure of the present invention can be used for single gold sheets, upper and lower stacked sheets and multiple gold sheets arranged side by side. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the paddle lever drive of the present invention.

[0024] Figure 3 It is an exploded schematic diagram of the present invention.

[0025] Figure 4 It is a schematic diagram of an exploded view from another perspective of the present invention.

[0026] Figure 5 yes Figure 4 Enlarged schematic diagram of point a.

[0027] Figure 6 It is a schematic diagram of another perspective decomposition of the present invention.

[0028] Figure 7 2 is a schematic diagram of another embodiment of the driving connecting rod of the present invention.

[0029] Figure 8 2 is a schematic diagram of the state in which the paddle lever of the present invention is located at the starting position.

[0030] Figure 9 2 is a schematic diagram of the state in which the paddle lever of the present invention retracts the paddle.

[0031] Figure 10 It is a schematic diagram of the state in which the paddle lever of the present invention delivers the piece to a preset position. DETAILED DESCRIPTION

[0032] See also Figure 1-10 This embodiment provides a sequin feeding device capable of accurately feeding sequins, comprising a mounting plate 1, a base plate 2, at least one set of paddle assemblies, a drive motor 3 corresponding to each paddle assembly, and a rocker 31 mounted on the shaft of the drive motor 3. The paddle assemblies can be a single set, serving as a single sequin feeding device, or can be stacked with two, three, or multiple sequins, or even multiple sequins arranged side by side. The specific structure of the mounting plate 1 and base plate 2 can be modified based on the application scenario and the number of paddle assembly sets, in accordance with existing technologies.

[0033] Each paddle assembly includes a drive link 4 rotatably mounted on the mounting plate 1 and a paddle lever 41 rotatably connected to the drive link 4. The paddle lever 41 cooperates with the film feed slot on the base plate 2 to feed the paddle. A transmission assembly is located between the rocker 31 and the drive link 4 to drive the paddle assembly. This transmission assembly, located between the rocker 31 and the drive link 4, transmits the swinging force of the rocker 31 to the drive link 4, enabling the drive link 4 to drive the paddle lever 41 to feed and retract the film. Referring to the accompanying drawings, this embodiment uses a single paddle assembly and a single drive motor, taking a single gold piece as an example.

[0034] The transmission assembly includes a swing shaft 32 and a transmission arm 5 that cooperates with the swing shaft 32 to drive the paddle assembly. The transmission arm 5 is equipped with a stationary arm 51 and a movable adjustment arm 52. A drive slot 53 is located between the adjustment arm 52 and the stationary arm 51 to accommodate the swing shaft 32. The adjustment arm 52, located within the drive slot 53, has a first drive surface 54 that cooperates with the swing shaft 32 to drive the paddle assembly to a predetermined position. The stationary arm 51, located within the drive slot 53, has a second drive surface 55 that cooperates with the swing shaft 32 to retract the paddle assembly. The adjustment arm 52 has an elastic member 6 that presses the movable adjustment arm 52 against the swing shaft 32. The swing shaft 32 can directly engage with the drive slot 53. To improve its lifespan, the swing shaft 52 may be equipped with a bearing that mates with the drive slot 53 of the transmission arm 5. The first and second drive surfaces provide the required motion paths for paddle feeding and retraction.

[0035] Because the adjustment arm 52 is elastically secured to the swing shaft 32, the curved surface structure of the first driving surface 54 can be fully adjusted during the film feeding process according to the film feeding path of the selector lever 41. By fully utilizing the first driving surface 54 in conjunction with the swing shaft 32, the sequins are directly fed to the preset position, ensuring a more precise fit between the needle hole of the sequins and the sequin needle. This avoids the need for spring-loaded feeding at the end of the film feeding process as in the prior art, thereby improving film feeding accuracy. Setting elasticity on the adjustment arm 52 can be beneficial to production and rapid debugging. During the debugging process, it is only necessary to ensure that the first driving surface 54 of the adjustment arm 52 can finally drive the paddle lever 41 to the preset feeding position. When retracting in the reverse direction, when the swing shaft 32 cooperates with the second driving surface of the stationary arm 51, the adjustment arm 52 is still always in close contact with the swing shaft 32 under the action of elasticity. The elastic setting of the adjustment arm 52 can effectively eliminate the gap between the inner walls on both sides of the driving groove 53 and the swing shaft 32. At the same time, the adjustment arm 52 elastically clings to the swing shaft 32, which will not affect the relative rotation and sliding between the driving groove 53 and the swing shaft 32.

[0036] The transmission assembly can be configured to mount the transmission arm 5 on the rocker arm 31 and the rocker shaft 32 on the drive link 4 as needed. Referring to the figures, in this embodiment, the transmission arm 5 is mounted on the drive link 4, while the rocker shaft 32 is mounted on the rocker arm 31. The transmission arm 5 can be configured as part of the drive link 4 or rocker arm 31, or it can be independently mounted on either. In this embodiment, the transmission arm 5 and drive link 4 are coaxially fixed to a first rotating shaft 7, which is rotatably mounted on the mounting plate 1. The lower end of the drive link 4 is rotatably connected to the paddle lever 41.

[0037] The transmission arm 5 is arranged on the rocker arm 31 with the opening of the driving slot 53 facing downward or to one side, or the transmission arm 5 is arranged on the driving connecting rod 4 with the opening direction of the driving slot 53 facing upward or to one side.

[0038] In this embodiment, preferably, the opening direction of the driving slot 53 is toward the rear side, and the rear side is the direction in which the paddle lever 41 retracts; the stationary arm 51 is provided with a bent arm adapted to the second driving surface of the driving slot 53. The stationary arm 51 is set as a bent arm, and the opening direction of the driving slot 53 is toward the rear side, so that when the swing shaft 32 moves in coordination with the second driving surface of the stationary arm 51, the direction of movement and the direction of force can be as consistent as possible, thereby optimizing the transmission of power.

[0039] The adjustment arm 52 can rotate or slide relative to the transmission arm 5. In this embodiment, in order to facilitate production, assembly, and debugging, the adjustment arm 52 can slide and cooperate with the transmission arm 5, so that the first driving surface 54 of the adjustment arm 52 is driven by the elastic body 6 to cooperate with the swing shaft 32. A guide structure is provided between the adjustment arm 52 and the transmission arm 5 to guide the sliding of the adjustment arm 52; the elastic body 6 drives the adjustment arm 52 to slide relative to the transmission arm 5 and cooperate with the swing shaft 32; and the transmission arm 5 is provided with a mounting groove 61 for mounting the elastic body 6. The elastic body 6 can be a coil spring disposed between the transmission arm 5 and the adjustment arm 51 and located in the mounting groove 61.

[0040] See also Figure 7 As a solution, the guide structure includes a guide slot 56 and a guide post provided between the adjustment arm 52 and the transmission arm 5. The guide post can be provided on the transmission arm 5, and the guide slot 56 can be provided on the adjustment arm 52. The guide post can be replaced by two connecting bolts. The connecting bolts not only position and connect the transmission arm 5 and the adjustment arm 52, but also cooperate with the guide slot 56 to form a positioning for the directional sliding of the adjustment arm 52.

[0041] See also Figure 1-4 , 6, 8-10, the transmission arm 5 is connected to a guide sleeve for guiding the sliding movement of the adjustment arm 52. The guide sleeve 9 cooperates with the transmission arm 5 to form a guide groove, thereby guiding the adjustment arm 52 and allowing the adjustment arm 52 to slide smoothly within the guide groove. Of course, the guide structure is not limited to the above two structures, and other specific structures can also be set according to existing technologies.

[0042] A protection frame 11 for protecting the transmission assembly is provided on the mounting plate 1 , and the drive motor 3 is mounted on the protection frame 11 .

[0043] The second driving surface 55 is arranged close to the swing shaft 32. During the installation and debugging of the transmission arm 5, the second driving surface 55 can be close to the swing shaft 32, while the first driving surface of the adjustment arm 52 is always close to the swing shaft 32, completely eliminating the gap between the swing shaft 32 and the first and second driving surfaces, and effectively preventing backlash.

[0044] The motor shaft of the drive motor 3 is also connected to a first swing arm 8 that drives the cutter assembly to slice. The cutter assembly 82 includes a cutter shaft 81 mounted on the mounting plate 1, a cutter 82 disposed at one end of the cutter shaft 81, and a drive block 83 disposed at the other end of the cutter shaft 81. A cutter transmission structure is provided between the drive block 83 and the first swing arm 8. The cutter transmission structure can be fully based on existing technology. See the accompanying drawings. The cutter transmission structure includes an adjustable length transmission connecting rod 84. One end of the transmission connecting rod 84 is rotatably connected to the drive block 83 via a universal joint, and the other end of the transmission connecting rod 84 is rotatably connected to the first swing arm 8 via a shaft. This allows for both plucking and slicing with a single motor.

[0045] It should be noted that the film feeding device of the present invention can completely drive the paddle lever 41 to feed the paddle to a preset position by adjusting the first driving surface 54 of the arm 52. Therefore, during the paddle feeding stage, the torsion spring is completely unnecessary to drive the driving link 4 to feed the paddle. In the accompanying drawings, the torsion spring on the driving link 4 is an optional feature and is described in the background technology, and is not required for the present invention.

[0046] See also Figure 8-10 , Figure 8 The position of the transmission arm 5 can be used as the starting state of the film feeding device. When the device of the present invention is feeding films, the working process is as follows: when it is necessary to feed films, the drive motor 3 is started, driving the rocker arm 31 to rotate clockwise. The rocker shaft 32 on the rocker arm 31 cooperates with the driving slot 53. Since the driving link 4 and the transmission arm 5 are connected to the mounting plate 1 through the first rotating shaft 7, the rocker shaft 32 that rotates clockwise with the rocker arm 31 cooperates with the second driving surface 55 of the stationary arm 51 to drive the driving link 4 to rotate through the transmission arm 5 and the first rotating shaft, so that the other end of the driving link 4 drives the paddle rod 41 back to the paddle position to prepare for paddle, see Figure 9 In the position shown, when the paddle lever 41 is driven to retreat, the elastic body 6 drives the first driving surface 54 of the regulating arm 52 to always be close to the swing shaft 32 , eliminating the gap between the driving slot 53 and the swing shaft 32 .

[0047] After the second driving surface 55 of the stationary arm 51 drives the paddle rod 41 to retreat to the paddle position, the driving motor 3 drives the rocking rod 31 to reverse, that is, rotate counterclockwise, and the rocking shaft 32 that reverses with the rocking rod 31 cooperates with the first driving surface 54 of the adjusting arm 52 without gap, and drives the driving connecting rod 4 to rotate through the transmission arm 5 and the first rotating shaft 7, so that the other end of the driving connecting rod 4 drives the paddle rod 41 to move forward to feed the film. Since the elastic body 6 drives the first driving surface 54 of the adjusting arm 52 to always be close to the rocking shaft 32, the first driving surface 54 of the adjusting arm 52 can directly drive the paddle rod 41 to feed the film to the preset position, that is, to transport the needle hole of the gold film to the bottom of the needle, so that the needle can embroider the film quickly and accurately. Figure 10 Position shown.

[0048] After the film is fed, the drive motor 3 rotates clockwise again, driving the plucking rod 41 to retreat. When the drive motor 3 rotates clockwise, the first swing arm 8 and the transmission connecting rod 84 installed on the motor shaft of the drive motor 3 drive the cutter to slice the film through the drive block 83 and the knife shaft 81, completing a piece of gold embroidery. The drive motor 3 rotates clockwise again until the plucking rod 41 retreats to the plucking position, and the plucking continues.

[0049] Each time the driving motor 3 rotates counterclockwise, it drives the paddle lever 41 to feed the slices and simultaneously drives the cutter 82 of the cutter assembly to lift up; each time the driving motor rotates clockwise, it drives the paddle lever 41 to retract and simultaneously drives the cutter 82 of the cutter assembly to slice.

[0050] For the convenience of description, the above uses clockwise and counterclockwise rotation. Figure 8-10 The description of the device status in the description is not intended to limit the present application.

Claims

1. A sequin feeding device capable of accurately feeding sequins, comprising a mounting plate, a base plate, at least one set of paddle assemblies, a drive motor corresponding to each paddle assembly, and a rocker mounted on the drive motor shaft. Each paddle assembly includes a drive connecting rod rotatably mounted on the mounting plate, and a paddle rod rotatably connected to the drive connecting rod. A transmission assembly for driving the paddle assembly is disposed between the rocker and the drive connecting rod. The device is characterized in that: The transmission assembly includes a swing shaft, a transmission arm that cooperates with the swing shaft to drive the paddle assembly, the transmission arm is provided with a stationary arm and a movable adjustment arm, a driving groove that can accommodate the swing shaft is provided between the adjustment arm and the stationary arm, the adjustment arm is located on the inner wall of the driving groove and is provided with a first driving surface that cooperates with the swing shaft to drive the paddle assembly to a preset position; the stationary arm is located on the inner wall of the driving groove and is provided with a second driving surface that cooperates with the swing shaft to drive the paddle assembly to retract, and the adjustment arm is provided with an elastic body that drives and presses the movable adjustment arm to fit tightly against the swing shaft.

2. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: The transmission arm is arranged on the driving connecting rod, and the swing shaft is arranged on the swing rod.

3. The gold sheet feeding device capable of accurately feeding gold sheets according to claim 1, characterized in that: The opening direction of the driving slot is toward the rear side, and the rear side is the direction in which the paddle lever retreats; the stationary arm is provided with a bent arm adapted to the second driving surface of the driving slot.

4. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: The transmission arm and the driving connecting rod are coaxially fixed on the first rotating shaft, and the first rotating shaft is rotatably mounted on the mounting plate.

5. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: The adjustment arm can be slidably matched with the transmission arm; a guide structure for guiding the sliding of the adjustment arm is provided between the adjustment arm and the transmission arm; the elastic body drives the adjustment arm to slide relative to the transmission arm and fit closely with the swing shaft; and a mounting groove for mounting the elastic body is provided on the transmission arm.

6. The gold sheet feeding device capable of accurately feeding sheets according to claim 1 or 5, characterized in that: The transmission arm is connected with a guide sleeve for guiding the sliding movement of the regulating arm.

7. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: A protection frame for protecting the transmission assembly is provided on the mounting plate, and the drive motor is installed on the protection frame; the second drive surface is arranged close to the swing shaft.

8. The gold sheet feeding device capable of accurately feeding sheets according to claim 5, characterized in that: The guide structure includes a guide groove and a guide column arranged between the adjustment arm and the transmission arm.

9. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: The motor shaft of the drive motor is also connected to a first swing arm that drives the cutter assembly to slice. The cutter assembly includes a cutter shaft arranged on a mounting plate, a cutter arranged at one end of the cutter shaft, and a drive block arranged at the other end of the cutter shaft. A cutter transmission structure is provided between the drive block and the first swing arm.

10. The gold sheet feeding device capable of accurately feeding sheets according to claim 1, characterized in that: The swing shaft is provided with a bearing which matches the driving groove provided on the transmission arm.

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