A bead clamp for conveying beads

Abstract

The present invention discloses a bead clamp for conveying beads, wherein a pair of clamping arms of the bead clamp are configured to clamp a normally closed clamping opening. When in use, the bead clamp is clamped and closed in all other positions except for being controlled to open at the bead receiving position and the bead embroidery position, which can effectively prevent beads from falling during conveying. A stop structure for the bead clamp and / or the cover plate is provided on the bottom plate to stop the bead clamp and / or the cover plate from retreating to the bead receiving position; when the bead clamp returns to the bead receiving position, the bead clamp and / or the cover plate are just stopped by the stop structure. The driving member that continues to retreat, in combination with the clamping opening structure, drives the bead clamp to open, so that the clamping openings of the clamping arms of the bead clamp are opened from their actually closed clamping state. The size of the clamping openings of the pair of clamping arms of the bead clamp can be accurately controlled by the distance the driving member moves further backward, thereby receiving beads of corresponding sizes.

Description

Technical Field

[0001] The invention relates to a bead clamp for conveying beads. Background Art

[0002] The bead feeding clamp mechanism is used to transport beads at the bottom of the bead feeding device. Existing bead feeding clamps consist of a bead clamp and a drive plate that drives the clamp forward and backward. The clamp typically clamps and advances or lags forward as the drive plate advances, and opens and retreats or lags backward as the drive plate retreats. To facilitate bead transport, the clamp's opening or clamping depends entirely on the continuous advancement and retreat of the drive plate. If the drive plate stops advancing or retreats unevenly, it becomes difficult to predict the clamp's clamping or opening state. When the clamp's gripping opening separates from the base plate and is about to enter the beading position, beads can easily fall from the clamp, primarily because the clamp's gripping is not precisely controlled. When the clamp's gripping opening enters the bead receiving position, the degree of clamp opening cannot be precisely controlled. Therefore, a clamp must be configured to closely match the beads. However, a pre-set clamp can only transport beads with a narrow outer diameter range. This clamp is not well suited for transporting beads of a wide variety of sizes and types.

[0003] The existing bead clamp cannot accurately control the size of the bead clamp opening. Usually, in order to clamp the beads, the bead clamp needs to be opened to the maximum extent. When conveying tube beads with a long length and a small outer diameter, the tube beads are easily tilted after they are separated from the bead guide rod when receiving the tube beads, resulting in the existing bead clamp being unable to convey the tube beads. Summary of the Invention

[0004] The invention aims to solve the problems existing in the use of the existing bead clamp for conveying beads and provides a bead clamp for conveying beads which can accurately open the bead clamp at the bead receiving position and control the opening size of the bead clamp.

[0005] The technical solution of the present invention to solve the existing problems is: a bead clamp for conveying beads, comprising a base plate, a bead clamp sliding on the base plate, and a driving member for driving the bead clamp forward and backward. A clamping structure that can control the opening of the bead clamp is provided between the driving member and the bead clamp. The bead clamp is provided with a pair of matching clamping arms, and a clamping opening is provided at the corresponding position between the pair of clamping arms. The driving member is provided with a driving assembly. As an improvement, the pair of clamping arms of the bead clamp are configured to clamp the bead clamp at the normally closed clamping opening. The pair of clamping arms are connected to a cover plate. The base plate is provided with a bead clamp or / and a cover plate that stops retreating to a bead receiving position, and a stop structure that opens the clamping opening of the bead clamp in combination with the clamping structure.

[0006] It also includes a driving and pressing structure that is arranged at a driving and pressing position to delay the cover plate from sliding back and forth to control the hysteresis sliding of the bead clamp combined with the clamping structure to open the bead clamp. The cover plate is provided with a driving and pressing boss that cooperates with the driving and pressing structure. When the clamping mouth of the bead clamp approaches or / and enters the bead embroidery position, the driving and pressing boss just enters the driving and pressing position and cooperates with the driving and pressing structure.

[0007] As a further improvement, the stop structure includes a guide groove arranged on the bottom plate, the cover plate or bead clamp is provided with a stop block that can slide in the guide groove, and the rear end of the guide groove is provided with a first end position of the stop block.

[0008] As a further improvement, the front end of the guide groove is provided with a second end position of a stop block.

[0009] As a further improvement, the first and / or second end positions are provided with an elastic body; the stop structure stops the bead from retreating to the bead receiving position or retreating to the bead clamp and / or cover plate close to the bead receiving position.

[0010] As a further improvement, the front end of the driving and pressing boss is provided with a guiding inclined surface that matches the driving and pressing structure.

[0011] As a further improvement, the clamping opening is provided with an upwardly protruding extension.

[0012] As a further improvement, the clamping structure includes a control finger handle and a driving finger groove that are arranged between the driving member and the driving arm of the bead clamp. The rear end of the driving finger groove and the control finger handle are matched with each other and a second inclined surface is provided at the clamping mouth of the bead clamp clamping arm that drives a pair of clamping arms to retreat or open as the driving member retreats.

[0013] As a further improvement, the rear portion of the bead clamp is provided with a pair of adjustment arms for driving the bead clamp to clamp, and also includes an adjustment structure that cooperates with the adjustment arms and drives the adjustment arms to keep the bead clamp normally closed and clamped.

[0014] As a further improvement, the bead clamp adjustment arm is an elastic adjustment arm; the pair of adjustment arms are arranged on the outside of the bead clamp; and the pair of adjustment arms are provided with a bent arm facing the adjustment structure.

[0015] As a further improvement, matching connecting holes and connecting pins are provided between the pair of clamping arms and the cover plate.

[0016] Compared with the prior art, the present invention has the beneficial effect of setting a pair of clamping arms of the bead clamp to clamp a normally closed clamping mouth. When the bead clamp is in use, except for being controlled to open at the bead receiving position and the bead embroidery position, the bead clamp in other position states is clamped and closed, which can effectively prevent the beads from falling during the conveying process.

[0017] A stop structure is provided on the base plate to prevent the bead clamp and / or cover plate from retreating to the bead receiving position. When the bead clamp returns to the bead receiving position, the bead clamp and / or cover plate are stopped by the stop structure. The further retreating drive member, in conjunction with the opening mechanism, drives the bead clamp to open, causing the clamping openings of the clamping arms to open from their closed, clamped state. The further rearward movement of the drive member can be used to accurately control the size of the openings of the clamping arms, thereby receiving beads of corresponding sizes.

[0018] A driving pressure boss that cooperates with the driving pressure structure is provided on the cover plate. When the clamping mouth of the bead clip approaches or / and enters the bead embroidery position, the driving pressure boss just enters the driving pressure position and cooperates with the driving pressure structure, thereby delaying the backward sliding of the cover plate, controlling the delayed sliding of the bead clip and combining the opening structure to open the bead clip to complete the bead embroidery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a partially exploded schematic diagram of the present invention.

[0021] Figure 3 The figure is a schematic diagram of the perspective structure of the bead clip of the present invention located at the bead embroidery position when viewed from above.

[0022] Figure 4 yes Figure 3 AA section view.

[0023] Figure 5 This is a top perspective structural diagram of the bead clip of the present invention in the bead receiving position.

[0024] Figure 6 yes Figure 5 BB cross-sectional view.

[0025] Figure 7 It is a top view of the present invention with the cover plate removed.

[0026] Figure 8 A schematic diagram of the three-dimensional structure of the present invention from another perspective with the cover plate removed.

[0027] Figure 9 A schematic diagram of the three-dimensional structure of the present invention from another perspective.

[0028] Figure 10 Bottom view of the present invention. DETAILED DESCRIPTION

[0029] See also Figure 1-10, this embodiment provides a bead feeding clamp mechanism, comprising a base plate 1, a bead clamp sliding on the base plate 1, and a driving member 2 for driving the bead clamp forward and backward, wherein the driving member 2 is provided with a driving assembly for transmitting power to drive the driving member 2 to slide. An opening and closing structure for controlling the opening of the bead clamp is provided between the bead clamp and the driving member 2. The bead clamp is provided with a pair of cooperating clamping arms 3 that can be opened and closed. A clamping opening 31 is provided at the corresponding position between the pair of clamping arms, and the pair of clamping arms 3 is connected to a cover plate 5. Preferably, the cover plate 5 can be connected and arranged above the clamping arms 3. The pair of clamping arms 3 of the bead clamp are configured to clamp a bead clamp with a normally closed clamping opening. The rear part of the bead clamp described in this embodiment is provided with a pair of adjusting arms 4 for driving the bead clamp to clamp and close, and also includes an adjusting structure that cooperates with the adjusting arms 4 and drives the adjusting arms 4 to keep the bead clamp normally closed.

[0030] The cover plate 5 is provided with a pressure-propelling projection 61 that cooperates with the pressure-propelling structure 6. When the bead clamp's gripping opening 31 approaches and / or enters the bead embroidery position, the pressure-propelling projection 61 precisely enters the pressure-propelling position and cooperates with the pressure-propelling structure 6. That is, the pressure-propelling structure 6 only cooperates with the pressure-propelling projection 61 to pressure the cover plate 5; the pressure-propelling structure 6 does not pressure the cover plate area not covered by the pressure-propelling projection 61. A guide slope 64 is provided at the front end of the pressure-propelling projection 61, which cooperates with the pressure-propelling structure 6.

[0031] The bottom plate 1 is provided with a stop structure for stopping the bead clamp or / and the cover plate 5 from retreating to the bead receiving position and for opening the bead clamp holding opening 31 in combination with the clamp opening structure. The stop structure can be used to stop the cover plate 5 or / and the bead clamp.

[0032] The stop structure includes a guide groove 11 provided on the base plate 1. The cover plate 5 or the bead clamp is provided with a stop block 53 that can slide within the guide groove 11. The rear end of the guide groove 11 is provided with a first stop position 12 for the stop block. When the stop block 53 enters the stop position 12 and is stopped, the clamping opening 31 of the bead clamp is exactly in the bead receiving position.

[0033] The front end of the guide groove 11 is provided with a second end position of a stop block 53. The first end position can be used to stop the cover plate 5 and / or the bead clamp from advancing into the embroidery bead position, so that the bead clamp entering the embroidery bead position can be clamped when it is about to engage with the embroidery needle, preventing the beads from falling and not being penetrated by the embroidery needle.

[0034] The first and / or second end positions are provided with an elastic member. If the first end position is provided with an elastic member, the stop structure will prevent the bead clamp and / or cover plate 5 from retracting to the bead receiving position or to a position close to the bead receiving position. The retraction of the driver 2 can drive the bead clamp back and squeeze the elastic member, thus returning the bead clamp to the bead receiving position. Similarly, if the second end position is provided with an elastic member, the forward movement of the driver 2 can also drive the bead clamp forward and squeeze the elastic member, thus allowing the clamp's clamping opening to enter the bead receiving position.

[0035] If necessary, a clamping structure for controlling the bead clamp to further clamp can be provided between the bead clamp and the driving member 2 as required.

[0036] The regulating arm 4 is provided with elasticity.

[0037] The regulating arm 4 is an elastic regulating arm 4 .

[0038] The clamping opening 31 is provided with an upwardly protruding extension portion to facilitate clamping beads of different heights.

[0039] The bead clamp, the driving member 2, the clamping structure and the clamping structure can adopt existing technical structures.

[0040] In this embodiment, the driving member 2 includes a driving plate that cooperates with the driving assembly of the bead clamp. The front end of the driving plate is provided with a sliding groove 21 for accommodating a pair of clamping arms 3 of the bead clamp. A pair of adjustment arms 4 are also arranged in the sliding groove 21, and the two sides of the driving plate constitute driving arms 22.

[0041] The drive assembly may include a rocker arm 7, a slide 71 connected to a drive plate and adapted to engage with the rocker arm, and a drive motor (not shown) for driving the rocker arm 7. The slide 71 is provided with a corresponding connecting shaft and a U-shaped sliding insert between the rocker arm 7 and the slide 71.

[0042] In this embodiment, the inner wall of the drive plate's sliding groove 21, or the inner side of the drive arm 22, is equipped with a protruding control finger 23 facing the bead clamp. The outer wall of the bead clamp's pair of clamping arms 3 is provided with a drive finger groove 32 that mates with the control finger 23. The drive finger groove 32 and the front end of the control finger 23 are equipped with a first inclined surface 24 that advances or lags the bead clamp as the drive member 2 advances, further tightening the bead clamp. The first inclined surface 24 can be provided solely on the control finger 23 or the drive finger groove 32, or on both the control finger 23 and the drive finger groove 32. The first inclined surface 24 between the drive finger groove 32 and the control finger 23 forms a clamping structure.

[0043] The mating point between the driving finger groove 32 and the rear end of the control finger handle 23 is provided with a second inclined surface 25 that allows the driver 2 to retract, thereby driving the bead clamp to retract or retract with a delayed delay, and opens the clamping opening 31 of the bead clamp's clamping arm 3. The second inclined surface 25 can be provided solely on the control finger handle 23 or the driving finger groove 32, or it can be provided simultaneously on both the control finger handle 23 and the driving finger groove 32. The second inclined surface 25 between the driving finger groove 32 and the control finger handle 23 forms the opening mechanism.

[0044] To prevent the control finger handle 23 from disengaging from the driving finger groove 32, appropriate curved surfaces can be provided on the first and second inclined surfaces to facilitate better coordination between the pair of extension arms and the pair of clamping arms 3. At the same time, a sliding groove can be provided in the driving finger groove 32 to accommodate the forward and backward sliding of the control finger handle 23, so that the bead clamp can lag behind the movement of the driving member 2, allowing the control finger handle 23 of the driving member to better coordinate with the driving finger groove 32, thereby better controlling the opening and closing of the clamping arms 3.

[0045] The adjustment structure cooperates with a pair of adjustment arms 4 of the bead clamp to drive the clamping openings 31 of a pair of clamping arms of the bead clamp to maintain a normally closed clamping state, which is beneficial to conveying beads and preventing beads from collapsing or falling. In particular, after the clamping opening 31 of the bead clamp extends out of the bottom plate, the bead clamp can be kept in a normally closed state at the same time, making it convenient for the bead clamp to open from the normally closed starting position at the bead receiving position, so that the degree of opening of the bead clamp can be controlled by the clamping structure.

[0046] Matching connecting holes 51 and connecting pins 52 are provided between the pair of clamping arms 3 and the cover plate 5; in this embodiment, a pair of connecting holes 51 are provided on the cover plate 5, which respectively match the connecting pins 52 provided on the pair of clamping arms 3.

[0047] The pair of adjustment arms 4 are arranged on the outside of the bead clamp; the pair of adjustment arms 4 are provided with bent arms 41 facing the adjustment structure. The bent arms 41 are more convenient to cooperate with the adjustment structure.

[0048] The adjustment structure can be provided on the cover plate 5 and / or the base plate 1. In this embodiment, the cover plate 5 is provided with a protrusion 54 at the bottom thereof, which cooperates with the pair of adjustment arms 4 and presses against the adjustment arms 4 to drive the bead clamp to clamp. The protrusion 54 constitutes the adjustment structure. To improve the compatibility of the cover plate 5, the protrusion 54 can be in an elongated strip shape to facilitate cooperation with adjustment arms 4 of various lengths.

[0049] The driving and pressing structure 6 includes a support seat 62 arranged on the bottom plate 1, a rolling wheel 63 arranged in the support seat 62, and an elastic body 60 is provided on the support seat 62 to cooperate with the driving and pressing rolling wheel 63 and the protrusion entering the driving and pressing position.

[0050] When the bead clip of the present invention is in use, when the driver 2 drives the bead clip toward or / and into the bead embroidery position, the driving and pressing boss 61 on the cover plate 5 enters the driving and pressing position and is pressed by the roller 63. This increases the resistance to the bead clip's advancement through the combination of the cover plate 5 and the base plate 1, thereby delaying the bead clip's advancement. This delayed advancement creates a speed difference with the driver 2, which is advancing at a normal speed. Of course, the stop block 53 can also cooperate with the second end position to stop the cover plate and the bead clip. The front end of the control finger handle 23 between the driver 2 and the bead clip cooperates with the first inclined surface 24 of the driving finger groove 32, further driving the pair of clamping arms 3 to further clamp the clamping opening 31 to prevent beads that have escaped from the base plate 1 from falling. After the bead clamp enters the bead embroidery position with the driver 2, the embroidery needle is inserted into the bead hole, and the needle handle strikes the bead or before the strike, the driver 2 drives the bead clamp backward. During the retreat, the driving pressure boss 61 is also pressed by the rolling wheel 63, thereby increasing the resistance to the bead clamp's advance through the cover plate 5 in conjunction with the base plate 1, delaying the bead clamp's retreat. The delayed retreating bead clamp forms a speed difference with the driver 2 retreating at a normal speed. The rear end of the control finger handle 23 between the driver 2 and the bead clamp cooperates with the second inclined surface 25 of the driving finger groove 32, causing the clamping opening 31 of the clamping arm 3 to open and release the bead. The bead clamp continues to retreat with the driver 2 until the driving pressure boss 61 is released from the driving position. After the driving pressure boss 61 is released from the rolling wheel 63, the rolling wheel 63 no longer drives the cover plate 5. The pressure between the cover plate 5, the bead clamp and the base plate 1 is released, and the resistance is reduced. The bead clamp, under the action of the adjustment arm 4, closes and clamps the clamping openings 31 of the pair of clamping arms 3 until it returns to the bead receiving position. The stop block 53 on the cover plate 5 is stopped at the first end position 12 of the guide groove 11, and the bead clamp connected to the cover plate 5 is also stopped. The driving motor can be used to control the rocker arm 7 to continue to drive the slide 71 to drive the driving member 2 to move backward. The stopped bead clamp cooperates with the driving member 2 that continues to retreat. The rear end of the control finger handle 23 between the driving member 2 and the bead clamp cooperates with the second inclined surface 25 of the driving finger groove 32, so that the clamping opening 31 of the clamping arm 3 of the bead clamp is opened. The distance that the rocker arm 7 drives the slide 71 to drive the driving member 2 to move backward can be controlled by the driving motor to accurately control the size of the clamping opening 31 of the clamping arm 3 of the bead clamp, so as to receive the corresponding bead. After receiving the bead, the driving member 2 drives the bead clamp forward to deliver the bead to the bead embroidery station to continue embroidering the next bead.

[0051] Of course, the driving of the bead clip can also adopt other existing technical structures. The specific action can adopt the corresponding existing technical structure as needed.

[0052] In the present invention, the front direction refers to the direction in which the bead clip delivers beads toward the beading position, and the rear direction refers to the direction in which the bead clip returns to the bead receiving position. The front position is the front end, and the position opposite the front end is the rear end. The term "close" in the present invention refers to the meaning of "close" in the art and is not limited to a specific position. It can be a position within a certain distance, usually not exceeding the middle position.

Claims

1. A bead clamp for conveying beads, comprising a base plate, a bead clamp sliding on the base plate, and a driving member for driving the bead clamp forward and backward; a clamping mechanism for controlling the opening of the bead clamp is provided between the driving member and the bead clamp; the bead clamp is provided with a pair of cooperating clamping arms, a clamping opening is provided at corresponding positions between the pair of clamping arms; the driving member is provided with a driving assembly, and is characterized in that: The pair of clamping arms of the bead clip are configured to clamp the bead clip of the normally closed clamping mouth, and the pair of clamping arms are connected to a cover plate, and the bottom plate is provided with a stop structure for stopping the bead clip or / and the cover plate from retreating to the bead receiving position, and opening the clamping mouth of the bead clip in combination with the clamping structure; it also includes a driving and pressing structure arranged at a driving and pressing position to delay the sliding of the cover plate to control the hysteresis sliding of the bead clip in combination with the clamping structure to open the bead clip, and the cover plate is provided with a driving and pressing boss that cooperates with the driving and pressing structure, and when the clamping mouth of the bead clip approaches or / and enters the bead embroidery position, the driving and pressing boss just enters the driving and pressing position and cooperates with the driving and pressing structure; the rear part of the bead clip is provided with a pair of adjustment arms that drive the bead clip to clamp, and also includes an adjustment structure that cooperates with the adjustment arm and drives the adjustment arm to keep the bead clip normally closed and clamped.

2. The bead clamp for conveying beads according to claim 1, characterized in that: The stop structure includes a guide groove arranged on the bottom plate, the cover plate or the bead clip is provided with a stop block which can slide in the guide groove, and the rear end of the guide groove is provided with a first end position of the stop block.

3. The bead clamp for conveying beads according to claim 2, characterized in that: The front end of the guide groove is provided with a second end position of a stop block.

4. The bead clamp for conveying beads according to claim 3, characterized in that: The first or / and second end position is provided with an elastic body; the stop structure stops the bead from retreating to the bead receiving position or retreating to the bead clamp or / and cover plate close to the bead receiving position.

5. The bead clamp for conveying beads according to claim 1, characterized in that: The front end of the driving and pressing boss is provided with a guiding inclined surface which matches the driving and pressing structure.

6. The bead clamp for conveying beads according to claim 1, characterized in that: The clamping opening is provided with an upwardly protruding extension portion.

7. The bead clamp for conveying beads according to claim 1, characterized in that: The clamping structure includes a control finger handle and a driving finger groove that are arranged between the driving member and the driving arm of the bead clamp. The rear end of the driving finger groove and the control finger handle are matched with each other and a second inclined surface is provided at the clamping mouth of the bead clamp clamping arm that drives a pair of clamping arms to retreat or open as the driving member retreats.

8. The bead clamp for conveying beads according to claim 1, characterized in that: The bead clamp adjusting arm is an elastic adjusting arm; the pair of adjusting arms are arranged on the outside of the bead clamp; and the pair of adjusting arms are provided with a bent arm facing the adjusting structure.

9. The bead clamp for conveying beads according to claim 1, characterized in that: Matching connecting holes and connecting pins are provided between the pair of clamping arms and the cover plate.

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