Box clamping mechanism

Abstract

The present invention relates to a box clamping mechanism, comprising two clamping devices arranged in parallel, the clamping device comprising a base, a driving device and a moving device, the driving device and the moving device being arranged on the base, the moving device being provided with at least one scooping claw, the driving device being connected to the moving device and being able to drive the scooping claw to slide along the moving device, so as to insert and pull out the scooping claw into and out of the slot of the box. During use, the present invention only needs to drive the scooping claw to the slot of the box to scoop up the box; at the same time, the scooping claw in the present invention can be moved at will, so it can be applied to boxes of different specifications; the present invention has the advantages of simple operation, wide range of use and strong applicability.

Description

Technical Field

[0001] The invention relates to a clamping mechanism, in particular to a box clamping mechanism. Background Art

[0002] In the production of liquid crystal panels, the box used to hold the panels is sometimes scooped up according to the needs of the process flow. The existing box scooping solution generally has a set of box scooping mechanisms on both sides of the box. The box scooping mechanism on each side has several scooping claws. The scooping claws penetrate into the bottom of the box from the gap between the rollers, and then rise to scoop up the box.

[0003] The existing box-lifting mechanism has three main disadvantages:

[0004] 1) The claws need to be adjusted manually. The existing claws are generally locked on the aluminum extrusion or guide groove. When the large and small boxes are switched, the staff manually loosens the quick-release screws, adjusts the claws to the appropriate position, and then locks the claws;

[0005] 2) The scooping claw must reach under the box from the gap between the rollers to scoop the box. If there are other mechanisms between the rollers, the scooping claw cannot reach under the box;

[0006] 3) When two or more boxes are stacked on top of each other, it is impossible to pick up the top box because the boxes are stuck together and the scooping claws cannot reach in. Summary of the invention

[0007] In order to overcome the above-mentioned defects, the present invention provides a box clamping mechanism, which can conveniently clamp each layer of boxes and lift them to a proper position, and is suitable for lifting operations of boxes of various sizes.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] A box clamping mechanism includes two clamping devices arranged in parallel, the clamping device includes a base, a driving device and a moving device, the driving device and the moving device are arranged on the base, at least one claw is provided on the moving device, the driving device is connected to the moving device and can drive the claw to slide along the moving device, so as to clamp the claw into and pull out of the groove on the side of the box.

[0010] Preferably, a slide rail is provided at the lower end of the base along the length direction of the base, the moving device is a lead screw, the lead screw includes a screw, a nut and a nut seat, the nut is slidably connected to the screw, the nut seat is fixedly connected to the nut, the claw is fixedly arranged on the nut seat, and a slider is also provided on the nut seat, the slider is stuck in the slide rail and can slide along the slide rail.

[0011] Preferably, the screw in the lead screw is provided with at least two thread segments with different pitches, each thread segment is provided with a claw, and the claw only reciprocates along the thread segment.

[0012] Preferably, it also includes a coupling, the screw includes a left screw and a right screw, the claw includes a left claw and a right claw, the left screw and the right screw are connected by a coupling, and the two are symmetrically distributed about the coupling, at least two left claws are provided on the left screw, and at least two right claws are provided on the right screw, and the driving device can drive the left claw and the right claw to slide synchronously relative to or toward each other along the moving device.

[0013] Preferably, the screw in the left lead screw is a left-thread screw, and the screw in the right lead screw is a right-thread screw, the left-thread screw includes a first left screw segment and a second left screw segment, the pitch of the first left screw segment is three times the pitch of the second left screw segment, the length of the first left screw segment is three times the length of the second left screw segment, and the second left screw segment is close to the coupling, and the right-thread screw includes a first right screw segment and a second right screw segment, the pitch of the first right screw segment is three times the pitch of the second right screw segment, the length of the first right screw segment is three times the length of the second right screw segment, and the second right screw segment is close to the coupling, the pitch of the first right screw segment is equal to the pitch of the first left screw segment, and the lengths of the two are also equal.

[0014] Preferably, two parallel brackets are provided, each bracket is provided with a vertical plate, the vertical plate is provided with a first drive motor and a first slide plate connected to the first drive motor, the clamping device is connected to the first slide plate, the first drive motor can drive the clamping device to move up and down, and the vertical plate is also provided with a second drive motor, the second drive motor can drive the clamping device to move horizontally forward and backward along the first slide plate.

[0015] Preferably, the base is provided with a slot for inserting the first slide, the vertical plate is provided with a vertical slide, and the first slide is provided with a first protrusion that cooperates with the first slide.

[0016] Preferably, each bracket is also fixedly provided with a third driving motor, the vertical plate is connected to the third driving motor, and the third driving motor can drive the vertical plate to move horizontally left and right along the bracket.

[0017] Preferably, a groove is provided on the bottom plate of the vertical plate, and the vertical plate is engaged with the bracket through the groove.

[0018] Preferably, the driving device comprises a motor and a transmission assembly, and the transmission assembly comprises a driving wheel fixedly connected to the motor, a driven wheel connected to the motion device, and a synchronous belt wound around the driving wheel and the driven wheel.

[0019] The beneficial effects of the present invention are:

[0020] 1) During use, the present invention only needs to drive the scooping claw to the groove of the box body to scoop up the box, instead of having to extend the scooping claw from the gap between the rollers to the bottom of the box to scoop up the box as in the prior art. If there is no gap between the rollers, the box cannot be scooped up, and when multiple boxes are stacked together, the upper or middle box cannot be scooped up. At the same time, the scooping claw in the present invention can be moved at will, so it can be applied to boxes of different specifications.

[0021] 2) In the present invention, a coupling is used to connect the left-thread screw and the right-thread screw, and the screw is provided with two thread segments with different pitches, so that four claws can be controlled by one motor to run in different directions and speeds, with a simple structure and very stable operation;

[0022] 3) The second drive motor in the present invention can drive the claw to move horizontally forward and backward, so that the claw can extend into and out of the slot of the box, further improving the clamping strength of the box. The first drive motor can drive the box to move up and down to achieve the lifting action of the box. The third drive motor can drive the box to move horizontally left and right, and the boxes can be aligned and stacked. Therefore, the first, second and third drive motors can be used in combination to achieve multi-directional movement of the box to meet operational requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0027] In the figure: 10-base, 11-slide rail, 20-driving device, 21-motor, 22-transmission assembly, 30-left lead screw, 31-left fishing claw, 32-left threaded screw, 33-left slider, 40-coupling, 50-right lead screw, 51-right fishing claw, 52-right threaded screw, 53-right slider, 60-box, 70-bracket, 71-vertical plate, 72-first slide plate, 73-first driving motor, 100-clamping device. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example: Figure 1-4 As shown, a box clamping mechanism includes two clamping devices 100 arranged in parallel, the clamping device 100 includes a base 10, a driving device 20 and a moving device, the driving device 20 and the moving device are arranged on the base, at least one claw is arranged on the moving device, the driving device 20 is connected to the moving device and can drive the claw to slide along the moving device, so as to clamp the claw into and pull out of the groove on the side of the box 60. The lower end of the base 10 is provided with a slide rail 11 along the length direction of the base, the moving device is a lead screw, the lead screw includes a screw rod, a nut and a nut seat, the nut is slidably connected to the screw rod, the nut seat is fixedly connected to the nut, the claw is fixedly arranged on the nut seat, and a slider is also arranged on the nut seat, the slider is clamped in the slide rail 11 and can slide along the slide rail. The clamping mechanism is used to clamp and lift the box 60 containing the liquid crystal panel. The box is provided with symmetrical grooves. The brackets in the present invention are respectively fixed on both sides of the box storage rack. The clamping device is connected to the vertical plate of the bracket. In this embodiment, the driving device is a motor 21 and a transmission assembly 22, and the motion device is a lead screw. The lead screws on both sides of the box are provided with a plurality of claws. The claws are L-shaped structures. When the box needs to be clamped, the motor 21 drives the claws into the grooves of the box and inserts the L-shaped claws into the grooves to clamp the box, and then the first driving motor 73 is used to Box lifting: During use, the present invention only needs to drive the scooping claws to the grooves on the sides of the box to scoop up the box, instead of having to extend the scooping claws from the gaps between the rollers to the bottom of the box to scoop up the box as in the prior art. If there is no gap between the rollers, the box cannot be scooped up, and when multiple boxes are stacked together, the upper or middle box cannot be scooped up. At the same time, the scooping claws in the present invention can be moved at will, so they can be suitable for boxes of different specifications. Therefore, the present invention has the advantages of simple operation, wide range of use and strong applicability.

[0030] The screw in the lead screw is provided with at least two thread segments with different pitches, each thread segment is provided with a claw, and the claw reciprocates only along the thread segment. A coupling 40 is also included, the lead screw includes a left lead screw 30 and a right lead screw 50, the claw includes a left claw 31 and a right claw 51, the left lead screw 30 and the right lead screw 50 are connected by the coupling 40, and the two are symmetrically distributed about the coupling, the left lead screw 30 is provided with at least two left claws 31, and the right lead screw 50 is provided with at least two right claws 51, and the driving device 20 can drive the left claw 31 and the right claw 51 to slide synchronously relative to or toward each other along the motion device. A coupling is used to connect the left screw 32 and the right screw 52. Since the coupling 40 has a large angular compensation capability, a compact structure and high transmission efficiency, even if the left screw and the right screw are not on the same axis, that is, when there is a certain axis angle, the two axes can rotate continuously and the torque and motion can be transmitted reliably. Therefore, there is no need to perform offset correction on the screw, making the entire operation very stable.

[0031] like Figure 2As shown, the screw in the left lead screw 30 is a left-thread screw 32, and the screw in the right lead screw 50 is a right-thread screw 52. The left-thread screw 32 includes a first left-thread segment and a second left-thread segment. The pitch of the first left-thread segment is three times the pitch of the second left-thread segment, and the length of the first left-thread segment is three times the length of the second left-thread segment. The second left-thread segment is close to the coupling 40. The right-thread screw 52 includes a first right-thread segment and a second right-thread segment. The pitch of the first right-thread segment is three times the pitch of the second right-thread segment, and the length of the first right-thread segment is three times the length of the second right-thread segment. The second right-thread segment is close to the coupling 40. The pitch of the first right-thread segment is equal to the pitch of the first left-thread segment, and the lengths of the two are also equal. In this embodiment, the two symmetrical long sides of the box body are respectively provided with four grooves with equal spacing. The width of the groove is generally 60mm, and the depth is generally between 15mm-20mm. The claw is slightly smaller than the groove. Correspondingly, four claws are provided on the lead screw on each side, namely, two left claws 31 are provided on the left screw 32 and two right claws 51 are provided on the right screw 52. The left claw 31 slides on the slide rail 11 through the left slider 33, and the right claw 51 slides on the slide rail 11 through the right slider 53. The two left claws are respectively provided at the first left screw tooth segment and the second left screw tooth segment, and the two right claws are respectively provided at the first right screw tooth segment and the second right screw tooth segment. The motor 21 is connected to the right screw Rod 52, when moving, motor 21 drives right-thread screw 52, ​​and drives left-thread screw 32 to move synchronously through coupling 40, the coupling is just located in the center of the box, at the beginning, the claws are all located at the end of the thread segment close to the coupling, the distance between the two claws close to the coupling is set to L, then the length of the first right thread segment and the first left thread segment is 3L, the length of the second right thread segment and the second left thread segment is L, when the motor is running, the left claw moves to the left, and the right claw moves to the right, until it moves to the other end of the thread segment, at this time, the eight claws just correspond to the eight slots of the box, and then the second driving motor is used to insert the claws into the slots to clamp the box. In the present invention, the left-thread screw and the right-thread screw are connected by a coupling, and the screw is provided with two thread segments with different pitches, so that the four claws are controlled by one motor to run in different directions and speeds, the structure is simple, and the operation is very stable.

[0032] like Figure 4As shown, the present invention is also provided with two parallel brackets 70, each bracket is provided with a vertical plate 71, the vertical plate is provided with a first drive motor 73 and a first slide 72 connected to the first drive motor, the clamping device is connected to the first slide, the first drive motor can drive the clamping device to move up and down, the vertical plate is also provided with a second drive motor, the second drive motor can drive the clamping device to move forward and backward horizontally along the first slide. The base 10 is provided with a slot for the first slide to be inserted, the vertical plate is provided with a vertical slide, and the first slide is provided with a first protrusion to cooperate with the first slide. A third drive motor is also fixed on each bracket, the vertical plate is connected to the third drive motor, and the third drive motor can drive the vertical plate to move horizontally left and right along the bracket. A groove is provided on the bottom plate of the vertical plate, and the vertical plate is engaged with the bracket through the groove. The second drive motor can drive the claw to move forward and backward horizontally, so that the claw can be inserted into and pulled out of the slot of the box, further improving the clamping strength of the box. The first drive motor can drive the box to move up and down to achieve the lifting action of the box. The third drive motor can drive the box to move left and right horizontally, so that the boxes can be aligned and stacked. The drive device 20 includes a motor 21 and a transmission assembly 22. The transmission assembly 22 includes a driving wheel fixedly connected to the motor, a driven wheel connected to the motion device, and a synchronous belt wound around the driving wheel and the driven wheel. The driven wheel is fixedly connected to the left screw or the right screw.

[0033] Operation process of the present invention: In this embodiment, the two symmetrical long sides of the box body are respectively provided with four grooves with equal spacing, and correspondingly, four claws are provided on the lead screw on each side, namely, two left claws 31 are provided on the left thread screw 32 and two right claws 51 are provided on the right thread screw 52. At the beginning, the claws are located at one end of the screw thread section close to the coupling, and the distance between the two claws close to the coupling is set to L. First, the motor 21 is started to drive the right thread screw 52 to rotate, and the left thread screw 32 is driven to move synchronously through the coupling 40, the left claw moves to the left, and the right claw moves to the right, until the distance moved by the left and right claws close to the coupling is L, and the distance moved by the left and right claws away from the coupling is 3L. At this time, the eight claws on both sides of the box body move to the groove facing the box body, and then the second drive motor drives the claws to move horizontally forward and insert into the groove, thereby clamping the box body, and finally the first drive motor drives the box body to move upward to lift the box body. When you need to put the box back on the storage rack, just follow the above steps in reverse order.

[0034] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A box clamping mechanism, characterized in that: The invention comprises two clamping devices (100) arranged in parallel, wherein the clamping device (100) comprises a base (10), a driving device (20) and a moving device, wherein the driving device (20) and the moving device are arranged on the base, and the moving device is provided with at least one scooping claw, and the driving device (20) is connected to the moving device and can drive the scooping claw to slide along the moving device, thereby clamping the scooping claw into and pulling out of a groove on the side of a box body (60); The clamping mechanism is further provided with two brackets (70) arranged in parallel, each bracket being provided with a vertical plate (71), the vertical plate being provided with a first drive motor (73) and a first slide plate (72) connected to the first drive motor, the clamping device (100) being connected to the first slide plate, the first drive motor being able to drive the clamping device to move up and down, the vertical plate being further provided with a second drive motor, the second drive motor being able to drive the clamping device to move forward and backward horizontally along the first slide plate; The base (10) is provided with a slot for inserting a first slide plate, the vertical plate is provided with a vertical slideway, and the first slide plate is provided with a first protrusion that cooperates with the first slideway; Each bracket is also fixed with a third drive motor, the vertical plate is connected to the third drive motor, and the third drive motor can drive the vertical plate to move horizontally left and right along the bracket; A slide rail (11) is provided at the lower end of the base (10) along the length direction of the base; the motion device is a screw pair, the screw pair comprises a screw rod, a nut and a nut seat; the nut is slidably connected to the screw rod; the nut seat is fixedly connected to the nut; the claw is fixedly arranged on the nut seat; a slider is also provided on the nut seat; the slider is clamped in the slide rail (11) and can slide along the slide rail; The screw in the screw pair is provided with at least two thread segments with different pitches, each thread segment is provided with a claw, and the claw only reciprocates along the thread segment; The box clamping mechanism further comprises a coupling (40); the screw pair comprises a left screw pair (30) and a right screw pair (50); the claw comprises a left claw (31) and a right claw (51); the left screw pair (30) and the right screw pair (50) are connected via the coupling (40), and the two are symmetrically distributed about the coupling; the left screw pair (30) is provided with at least two left claws (31); the right screw pair (50) is provided with at least two right claws (51); and the driving device (20) is capable of driving the left claw (31) and the right claw (51) to slide synchronously relative to or towards each other along the motion device.

2. The box clamping mechanism according to claim 1, characterized in that: The screw in the left screw pair (30) is a left-thread screw (32), and the screw in the right screw pair (50) is a right-thread screw (52). The left-thread screw (32) includes a first left-thread segment and a second left-thread segment. The pitch of the first left-thread segment is three times the pitch of the second left-thread segment. The length of the first left-thread segment is three times the length of the second left-thread segment. The second left-thread segment is close to the coupling (40). The right-thread screw (52) includes a first right-thread segment and a second right-thread segment. The pitch of the first right-thread segment is three times the pitch of the second right-thread segment. The length of the first right-thread segment is three times the length of the second right-thread segment. The second right-thread segment is close to the coupling (40). The pitch of the first right-thread segment is equal to the pitch of the first left-thread segment, and the lengths of the two are also equal.

3. The box clamping mechanism according to claim 1, characterized in that: A groove is provided on the bottom plate of the vertical plate, and the vertical plate is engaged with the bracket through the groove.

4. The box clamping mechanism according to claim 1, characterized in that: The driving device (20) comprises a motor (21) and a transmission assembly (22), wherein the transmission assembly (22) comprises a driving wheel fixedly connected to the motor, a driven wheel connected to the motion device, and a synchronous belt wound around the driving wheel and the driven wheel.

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