A clip and transfer device

Abstract

The application relates to a clamp, which comprises a clamp base, a pushing member, a first elastic member, a guide mechanism and two sets of clamping mechanisms; one side of the clamp base is provided with a clamping opening, and the two sets of clamping mechanisms are respectively arranged on the two opposite sides of the clamping opening; each set of clamping mechanisms is connected with the pushing member; the clamping mechanism comprises a linkage member and a clamping member, one end of the clamping member is rotationally connected to the clamp base, and the linkage member is rotationally connected to the middle part of the clamping member; one end of the pushing member close to the clamping opening is provided with a first connecting part, and one end of the linkage member away from the clamping member is rotationally connected to the first connecting part; the first elastic member is arranged between the pushing member and the clamp base; under a natural state, the first elastic member forces the pushing member to move away from the clamping opening, and the free ends of the two clamping members are tightly close to each other to jointly close the clamping opening. Based on the above, the opening range of the clamping opening can be expanded, and the PCB board can be conveniently loaded into the clamping opening and firmly clamped. In addition, a transfer device is also provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of clamps, in particular to a clamp and a transfer device. BACKGROUND

[0002] In the automatic coating process of the PCB, the PCB needs to be suspended and clamped during the baking and cooling stages. The clamp used in the process is usually a clamp.

[0003] REFERENCE Figure 1 The existing clamp includes a clamp base 1, a push rod 101, a hinged rod 102, a linkage rod 103, a clamping rod 104, and a tension spring 105. One side of the clamp base 1 is provided with a clamping opening 11. One end of the clamping rod 104 is hinged to the clamp base 1, and the other end of the clamping rod 104 is close to the clamping opening 11 and serves to close the clamping opening 11. One end of the linkage rod 103 is rotatably connected to the middle part of the clamping rod 104, and the other end of the linkage rod 103 is rotatably connected to the hinged rod 102. The push rod 101 is rotatably connected to the clamp base 1 through a connecting piece. One end of the push rod 101 is rotatably connected to the linkage rod 103, and the middle part of the hinged rod 102 is hinged to the clamp base 1. The other end of the push rod 101, which is away from the linkage rod 103, is exposed to the clamp base 1.

[0004] By applying force to the exposed end of the push rod 101, the push rod 101 can drive the hinged rod 102 to rotate, thereby causing the linkage rod 103 connected to the hinged rod 102 to rotate and drive the clamping rod 104 to move away from one end of the clamping opening 11, thereby serving to open the clamping opening 11. One end of the tension spring 105 is fixed to the clamp base 1, and the other end of the tension spring 105 is connected to the hinged rod 102. The tension spring 105 can always generate an elastic force acting on the hinged rod 102, so that the hinged rod 102 is always rotated to the position where the clamping rod 104 abuts against the clamping opening 11, and can stably clamp the PCB when the PCB enters the clamping opening 11.

[0005] However, the clamp in the above scheme has the effect of automatically opening the clamping opening, but the opening mode is unilateral, and the range of opening of the clamp is small. As the PCB shakes during the suspension and transfer process, the position of the clamping opening deviates after the clamp is opened. When the PCB enters the clamping opening, it may not completely enter the clamping opening but abut against the side wall of the clamping opening. The position of the PCB may deviate when the clamping rod is reset to clamp the PCB, resulting in reduced stability of clamping. SUMMARY

[0006] In order to improve the stability of the PCB clamping and transfer, the present application provides a clamp and a transfer device.

[0007] In a first aspect, the clamp provided in this application adopts the following technical solution: a clamp includes a clamp base, a pushing member, a first elastic member, a guide mechanism, and two sets of clamping mechanisms. The guide mechanism is disposed in the clamp base and forms a limiting space, and the pushing member is movably disposed inside the limiting space. A clamping opening is provided on one side of the clamp base, and the two sets of clamping mechanisms are respectively disposed on two opposite sides of the clamping opening, and each set of clamping mechanisms is connected to the pushing member.

[0008] The clamping mechanism includes a linkage and a clamping component. One end of the clamping component is rotatably connected to the fixture base, and the linkage is rotatably connected to the middle of the clamping component. The end of the pushing component near the clamping opening is provided with a first connecting part, and the end of the linkage component away from the clamping component is rotatably connected to the first connecting part.

[0009] The first elastic element is disposed between the pushing member and the clamp base. One end of the first elastic element is fixed to the clamp base.

[0010] The other end of the clamping member is connected to the pusher member; in its natural state, the first elastic member forces the pusher member to move away from the clamping opening, and the free ends of the two clamping members abut tightly against each other to close the clamping opening.

[0011] By adopting the above technical solution, the clamp of this application, by setting two sets of clamping mechanisms on opposite sides of the clamping opening, can simultaneously clamp both sides of the PCB board to improve clamping stability. By setting a pushing member to move within the limited space enclosed by the guiding mechanism, when the pushing member moves towards the clamping opening, it can drive the linkage member to move towards the clamping opening, thereby driving the clamping member to rotate away from the clamping opening, thus opening the clamping opening for clamping the PCB board. The arrangement of the two sets of clamping mechanisms enables the clamping opening to open on both sides, with a larger opening range. This ensures that the PCB board remains aligned with the clamping opening even if it shakes during suspension and transfer, allowing the PCB board to be firmly clamped inside the clamping opening, thus improving the stability of the PCB board during suspension and operation. Furthermore, the first elastic member forces the pushing member to move away from the clamping opening, so that the two clamping members remain mutually abutting and jointly closing the clamping opening.

[0012] Optionally, the pushing component includes an integrally formed extension and a pushing component, with the extension and the pushing component arranged at an angle; the extension is movably disposed inside the limiting space, while the first connecting part is disposed on the pushing component; the clamp base is provided with a blocking wheel, which is located between the clamping port and the pushing component; in the open state, the pushing component abuts against the blocking wheel, and the free ends of the two clamping components move away from each other and open the clamping port.

[0013] By adopting the technical scheme, the extension part of the pushing member is movably arranged in the limiting space, which can guide the moving direction of the pushing member and make the pushing member move towards or away from the clamping opening.

[0014] Optionally, the guide mechanism comprises a plurality of rotating wheels arranged to rotate freely, each rotating wheel is arranged on the two sides of the extension part in the width direction, and all the rotating wheels are arranged at intervals along the extension direction of the extension part; in the natural state, the connecting position of the pushing part and the extension part abuts against one of the rotating wheels.

[0015] By adopting the technical scheme, the extension part of the pushing member is movably arranged in the limiting space, which can guide the moving direction of the pushing member and make the pushing member move towards or away from the clamping opening. In addition, since the extension part and the pushing part are arranged at an angle, when the pushing member moves away from the clamping opening under the elastic force of the first elastic member, the connecting position of the extension part and the pushing part can abut against one of the rotating wheels, thereby further limiting the pushing member, so that the clamp can normally keep the state that the two clamping parts abut against each other.

[0016] Optionally, the clamp base is provided with a first sliding groove, the sliding direction of the first sliding groove is perpendicular to the extension direction of the extension part; the first sliding groove is internally provided with a first sliding member, and the rotating wheel is rotatably installed on the first sliding member; a second elastic member is arranged between the first sliding member and the inner wall of the first sliding groove, and the second elastic member is used to force the first sliding member to move towards the extension part; the side surface of the extension part is provided with a limiting groove matched with the clamping of the rotating wheel, and in the open state, the rotating wheel is matched and clamped in the limiting groove; the clamping opening is further provided with a first unlocking mechanism for forcing the rotating wheel to disengage from the limiting groove.

[0017] By adopting the technical scheme, the rotating wheel is slidably arranged in the first sliding groove by arranging the first sliding groove, and the rotating wheel is forced to abut against the side surface of the extension part by the elastic force of the second elastic member, which can guide the movement of the pushing member. The first unlocking mechanism is arranged to automatically reset the clamping part and clamp the PCB when the PCB is clamped in the clamping opening.

[0018] When the pushing member moves towards the clamping opening and opens the clamping opening, the rotating wheel is opposite to the limiting groove of the extension part and can be clamped in the limiting groove. At this time, the clamping mechanism can be kept open by removing the external force acting on the pushing member. Therefore, in actual production and processing, the clamping opening opening mechanism can be arranged away from the PCB clamping station to be suitable for the clamping and suspension transfer of the PCB in a narrow space. Moreover, the PCB transferred in the prior art must be unloaded by opening the clamping mechanism by another clamping mechanism. The above design can make the two clamping mechanisms in the scheme be the same group, simplify the overall process steps, and improve the production efficiency to a certain extent.

[0019] Optionally, the first unlocking mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod. One end of the first connecting rod is connected to the first sliding member, and the other end of the first connecting rod is slidingly arranged on the clamp base body, and the sliding direction of the first connecting rod is arranged in the same direction as the sliding direction of the first sliding member. One end of the second connecting rod is rotatably connected to the first connecting rod, and the other end of the second connecting rod is rotatably connected to the third connecting rod. The second connecting rod and the first connecting rod are arranged at an acute angle. The third connecting rod is movably inserted into the clamp base body. One end of the third connecting rod away from the second connecting rod is partially located in the clamping opening.

[0020] By adopting the above technical scheme, when the PCB enters the clamping opening, it can abut against the end of the third connecting rod and push the third connecting rod to move away from the clamping opening, thereby driving the second connecting rod to move away from the clamping opening. At this time, the acute angle between the second connecting rod and the first connecting rod is reduced, thereby forcing the first connecting rod connected to the second connecting rod to move along the first sliding groove away from the extension part, and driving the rotating wheel to move away from the limiting groove. After the rotating wheel moves away from the limiting groove, the pushing member can move away from the clamping opening under the elastic force of the first elastic member, thereby enabling the two clamping members to automatically reset and jointly clamp the PCB.

[0021] Optionally, the limiting groove is provided with a guide surface on the side close to the clamping opening, and the guide surface is inclined outwardly towards the clamping opening.

[0022] By adopting the above technical scheme, when the first unlocking mechanism forces the rotating wheel to move away from the limiting groove, the pushing member moves away from the clamping opening under the elastic force of the first elastic member. At this time, the rotating wheel can always abut against the side of the limiting groove provided with the guide surface, so as to enable the rotating wheel to stably move away from the limiting groove, and enable the pushing member to stably reset, thereby reducing the instantaneous force when the clamping member clamps the PCB, and further reducing the possibility of scratching the PCB.

[0023] Optionally, the rotating connection between the clamping piece and the clamp base is provided with a locking mechanism, the locking mechanism comprises a fixed piece, a movable piece and a third elastic piece, the fixed piece is fixedly connected to the clamp base, one side of the fixed piece facing the linkage piece is provided with a movable slot, the movable piece is movably inserted into the movable slot, and the third elastic piece is arranged between the movable piece and the inner wall of the movable slot; one side of the linkage piece close to the fixed piece is provided with a clamping groove, the clamping groove is matched with the movable piece, and in the open state, the movable piece is matched and inserted into the clamping groove; the clamping opening is also provided with a second unlocking mechanism for forcing the movable piece to separate from the clamping groove.

[0024] By adopting the above technical scheme, when an external force acts on the pushing piece and drives the pushing piece to move towards the clamping opening, the movable piece can be finally clamped in the clamping groove of the pushing piece, and the clamping piece can also be kept in an open state. In addition, by arranging the second unlocking mechanism, the movable piece can automatically separate from the clamping groove when the PCB is loaded into the clamping opening, so that the two clamping pieces are automatically reset to clamp the PCB together.

[0025] Optionally, the second unlocking mechanism is provided with two groups, and the two groups of second unlocking mechanisms are used to force the movable piece to separate from the clamping groove; wherein the second unlocking mechanism comprises a second sliding piece, a fourth connecting rod and a fifth connecting rod, the clamp base is provided with a second sliding slot, and the second sliding piece is slidingly arranged in the second sliding slot; the fourth connecting rod is fixedly connected to the second sliding piece, one end of the fourth connecting rod away from the second sliding piece is fixedly connected to the movable piece; one end of the fifth connecting rod is hinged to the second sliding piece, and the other end of the fifth connecting rod is hinged to another fifth connecting rod; the hinged part of the two fifth connecting rods is partially located in the clamping opening.

[0026] By adopting the above technical scheme, by arranging the hinged part of the two fifth connecting rods in the clamping opening, the fifth connecting rod can be pushed to move upwards after the PCB is loaded into the clamping opening, and the second sliding piece can be driven to move along the extension direction of the second sliding slot; the movement of the second sliding piece can drive the fourth connecting rod to move outward, thereby driving the movable piece to separate from the clamping groove, releasing the locking between the linkage piece and the clamping piece, so that the clamping piece can be automatically reset to clamp the PCB together under the elastic force of the first elastic piece.

[0027] Optionally, the hinged part of the two fifth connecting rods is provided with a telescopic rod, one end of the telescopic rod away from the fifth connecting rod is connected to the clamp base; the telescopic direction of the telescopic rod is arranged in the same direction as the extension direction of the extension part.

[0028] By adopting the above technical scheme, the telescopic rod is arranged to limit the movement direction of the fifth connecting rod, reduce the situation that the two groups of second unlocking mechanisms move towards each other, so that the PCB can smoothly drive the movable piece to separate from the clamping groove when the PCB enters the clamping opening and abuts against the fifth connecting rod.

[0029] Secondly, the transfer device provided in this application adopts the following technical solution: A transfer device includes a frame, a chain drive mechanism and an opening clamping mechanism. The chain drive mechanism includes a chain belt fixed to the frame and a drive motor for driving the chain belt to rotate. The chain belt is arranged with clamps as described above. The opening clamping mechanism includes a pressing member fixed to the frame. The movable end of the pressing member is directly opposite the pushing member. When the clamp is open, the movable end of the pressing member extends outward and moves the pushing member toward the clamping opening.

[0030] By adopting the above technical solution, a chain is set to arrange and fix each clamp. When the drive motor runs, it drives the chain to move, so that each clamp can move sequentially to the work position where the PCB board is to be clamped. Then, the top pressure component pushes the pusher component to move towards the clamping port, which can make the two clamping components move away from each other and open the clamping port smoothly. The clamping port on both sides has a larger opening range, which can still be aligned with the clamping port when the PCB board shakes during the suspension and transfer process, thus improving the stability of the PCB board during suspension and operation.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. By setting two sets of clamping mechanisms, the clamping opening can be opened from both sides, resulting in a wider opening range and greater capacity.

[0033] It can keep the PCB board aligned with the clamping opening even when the PCB board shakes during the suspension and transfer process, and the PCB board can be firmly clamped inside the clamping opening, thus improving the stability of the PCB board during suspension and operation.

[0034] 2. By setting up a guiding mechanism, the multiple rotating wheels of the guiding mechanism together form a limiting space, which can guide...

[0035] The movement of the pusher component allows the exposed force acting on it to compel it to move towards / away from the clamping opening.

[0036] 3. By setting a first elastic element, the first elastic element always generates an elastic force acting on the pushing element and forces it to move.

[0037] The movement of the clamping parts away from the clamping opening allows the two clamping parts to remain in a state of mutual contact and joint closure of the clamping opening under normal conditions. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the comparison documents;

[0039] Figure 2 This is a schematic diagram of the structure when the clamp is closed in Example 1;

[0040] Figure 3This is a schematic diagram of the structure when the clamp is opened in Embodiment 2;

[0041] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0042] Figure 5 This is a partial cross-sectional view of the clamp in Embodiment 2, mainly showing the structure of the first unlocking mechanism;

[0043] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0044] Figure 7 This is a schematic diagram of the structure when the clamp is opened in Example 3;

[0045] Figure 8 This is a partial cross-sectional view of the locking mechanism in Embodiment 3;

[0046] Figure 9 This is a schematic diagram of the first unlocking mechanism in Embodiment 3;

[0047] Figure 10 This is a schematic diagram of the transfer device in Example 4.

[0048] Explanation of reference numerals in the attached drawings: 1. Fixture base; 11. Clamping opening; 12. Blocking wheel; 13. First sliding groove; 131. First sliding element; 132. Second elastic element; 14. First shaft hole; 15. Second shaft hole; 16. Mounting chamber; 17. Second sliding groove; 2. Pushing element; 21. Extension; 22. Pushing part; 23. Limiting groove; 231. Guide surface; 3. First elastic element;

[0049] 4. Guide mechanism; 41. Rotating wheel; 5. Clamping mechanism; 51. Linkage component; 511. Snap-fit ​​groove; 52. Clamping component; 6. First unlocking mechanism; 61. First connecting rod; 62. Second connecting rod; 63. Third connecting rod; 631. Support block; 64. Rubber pad; 7. Locking mechanism;

[0050] 71. Fastener; 711. Movable slot; 72. Movable component; 73. Third elastic component;

[0051] 8. Second unlocking mechanism; 81. Second sliding component; 82. Fourth link; 83. Fifth link; 84. Telescopic rod; 9. Frame; 91. Chain drive mechanism; 911. Sprocket; 912. Chain belt; 913. Drive motor; 101. Push rod; 102. Hinge rod; 103. Linkage rod; 104. Clamping rod; 105. Tension spring. Detailed Implementation

[0052] The following is in conjunction with the appendix Figures 2-10 This application will be described in further detail.

[0053] The embodiment of the present application discloses a clamp.

[0054] With reference to Figure 2 The clamp comprises a clamp base 1, a pushing member 2, a first elastic member 3, a guide mechanism 4 and two sets of clamping mechanisms 5. One side of the clamp base 1 is provided with a clamping opening 11 for the PCB to enter, and the two sets of clamping mechanisms 5 are symmetrically arranged on the two sides of the clamping opening 11. The clamping mechanism 5 comprises a linkage member 51 and a clamping member 52. One end of the clamping member 52 is rotationally connected to the clamp base 1, and the other end of the clamping member 52 is provided as a free end. The free end of the clamping member 52 is partially located outside the clamping opening 11, and the free ends of the clamping members 52 of the two clamping mechanisms 5 can abut each other and jointly clamp the PCB. The middle part of the clamping member 52 is provided with a second connecting part, and one end of the linkage member 51 is rotationally connected to the second connecting part.

[0055] The pushing member 2 comprises an integral extension part 21 and a pushing part 22. The extension direction of the extension part 21 is perpendicular to the side of the clamp base 1 provided with the clamping opening 11, and the pushing part 22 is arranged perpendicularly to the side of the extension part 21 close to the clamping opening 11. The end of the extension part 21 away from the clamping opening 11 extends to the outside of the clamp base 1, and is used for being pushed by an external clamping opening opening mechanism and moving towards the clamping opening 11.

[0056] The guide mechanism 4 comprises a plurality of rotating wheels 41, each of which is rotationally connected to the clamp base 1. All the rotating wheels 41 are divided into two groups, and the rotating wheels 41 in the two groups are arranged on the two sides of the extension part 21 in the width direction and are arranged at intervals along the extension direction of the extension part 21. All the rotating wheels 41 jointly enclose a limiting space, and the extension part 21 is arranged in the limiting space and can move towards / away from the clamping opening 11 along the limiting space.

[0057] The connecting position of the pushing part 22 and the extension part 21 is located at one end of the pushing part 22. The middle part of the pushing part 22 is provided with a first connecting part, and one end of the linkage member 51 away from the clamping member 52 is rotationally connected to the first connecting part. When the extension part 21 moves towards the clamping opening 11, the pushing part 22 can drive the linkage member 51 to move towards the clamping opening 11, and in turn drive the free end of the clamping member 52 to rotate away from the clamping opening 11 to open the clamping opening 11.

[0058] The first elastic member 3 is arranged as a tension spring, one end of the first elastic member 3 is connected to the clamp base 1, and the other end of the first elastic member 3 is connected to the pushing part 22; the first elastic member 3 is always in a tension state, and in a natural state, the first elastic member 3 can generate an elastic force acting on the pushing part 22, so as to force the pushing member 2 to move away from the clamping opening 11, at this time, the connection position of the pushing part 22 and the extension part 21 can abut against one of the rotating wheels 41, thereby playing a limiting role; and the free ends of the two clamping members 52 can be in a close abutting state. It can be understood that the natural state mentioned here refers to the state of the pushing member 2 when it is not pushed by an external force.

[0059] The clamp base 1 is further provided with a blocking wheel 12, the blocking wheel 12 is rotationally connected to the clamp base 1 and located between the pushing part 22 and the clamping opening 11; in the open state, the pushing part 22 can move towards the clamping opening 11 and abut against the blocking wheel 12, so as to open the two clamping members 52 to a specific angle, at this time, the pushing member 2 will not move to a position partially located in the clamping opening 11, and the possibility of collision between the PCB and the pushing member 2 when the PCB is loaded into the clamping opening 11 can be reduced.

[0060] The implementation principle of the embodiment 1 of the application is that when the clamp moves to the position of the PCB to be suspended and transferred, an external clamp opening mechanism pushes the pushing member 2 to move towards the clamping opening 11, so as to drive the linkage 51 to move towards the clamping opening 11, and then drive the clamping member 52 to rotate away from the clamping opening 11.

[0061] The clamping member 52 is rotationally connected to the clamp base 1 at a position away from the clamping opening 11, and the clamping member 52 is arranged to be rotationally connected to the linkage 51 at a position close to the clamping opening 11.

[0062] The clamping member 52 is rotationally connected to the clamp base 1 at a position away from the clamping opening 11, and the clamping member 52 is arranged to be rotationally connected to the linkage 51 at a position close to the clamping opening 11.

[0063] The embodiment 2 of the application further discloses a clamp, and the remaining components are the same as those of the embodiment 1, which will not be described here.

[0064] With reference to Figure 3 , one side surface of the extension part 21 in the embodiment is provided with an inner recessed limiting groove 23, the limiting groove 23 is used for clamping and limiting with the rotating wheel 41. With reference to Figure 4The first sliding slot 13 is internally slidably provided with a first sliding piece 131, so that the first sliding piece 131 can slide along the extension direction of the first sliding slot 13, and the rotating wheel 41 is rotationally connected to the first sliding piece 131.

[0065] The first sliding slot 13 is internally slidably provided with a first sliding piece 131, so that the first sliding piece 131 can slide along the extension direction of the first sliding slot 13, and the rotating wheel 41 is rotationally connected to the first sliding piece 131.

[0066] Referring to Figure 5 , the clamping opening 11 is internally provided with a first unlocking mechanism 6 for forcing the rotating wheel 41 to be separated from the limiting slot 23. The first unlocking mechanism 6 comprises a first connecting rod 61, a second connecting rod 62 and a third connecting rod 63. Meanwhile, referring to Figure 6 , the clamping base 1 is internally provided with a first shaft hole 14 which is in communication with the first sliding slot 13, and the axis direction of the first shaft hole 14 is arranged in the same direction as the extension direction of the first sliding slot 13; the outer diameter of the first connecting rod 61 is equal to the inner diameter of the first shaft hole 14, and the first connecting rod 61 is movably inserted into the first shaft hole 14; one end of the first connecting rod 61 is fixedly connected to the first sliding piece 131.

[0067] Back to Figure 5 , the inner end wall of the clamping opening 11 is provided with a second shaft hole 15, and the axis direction of the second shaft hole 15 is arranged in the same direction as the extension direction of the extension part 21; the outer diameter of the third connecting rod 63 is equal to the outer diameter of the second shaft hole 15, and the third connecting rod 63 is movably inserted into the second shaft hole 15. One end of the third connecting rod 63 is connected with a supporting block 631, and the supporting block 631 is located inside the clamping opening 11, and a rubber pad 64 is fixedly bonded to the side of the supporting block 631 which is away from the third connecting rod 63, so as to reduce the contact stress between the PCB and the third connecting rod 63.

[0068] The clamping opening 11 is internally provided with a mounting chamber 16, which is located between the first shaft hole 14 and the second shaft hole 15, and the first shaft hole 14 and the second shaft hole 15 are in communication with the mounting chamber 16; the second connecting rod 62 is arranged inside the mounting chamber 16, one end of the second connecting rod 62 is rotationally connected to the end of the first connecting rod 61 away from the first sliding part 131, and the other end of the second connecting rod 62 is rotationally connected to the end of the third connecting rod 63 away from the supporting block 631; the second connecting rod 62 and the first connecting rod 61 are always arranged at an acute angle.

[0069] In the embodiment, the number of the first connecting rods 61 is two, in order to simultaneously connect the two first connecting rods 61 to the second connecting rod 62, the two first connecting rods 61 can be first fixedly connected to a connecting rod, and then connected to the second connecting rod 62 through the connecting rod.

[0070] When the PCB enters the inside of the clamping opening 11, the PCB abuts against the rubber pad 64 and pushes the third connecting rod 63 to move into the second shaft hole 15, so as to drive the rotationally connected part of the second connecting rod 62 and the first connecting rod 61 to rotate in a direction away from the extension part 21, and finally drive the first connecting rod 61 to move in a direction away from the extension part 21, so that the rotating wheel 41 is separated from the corresponding limiting groove 23, and the limiting between the rotating wheel 41 and the limiting groove 23 is released; at this time, the pushing part 2 can be reset in a direction away from the clamping opening 11 under the elastic force of the first elastic part 3, so as to automatically reset the two clamping parts 52 to jointly clamp the PCB.

[0071] Back to Figure 4 , the side wall of the limiting groove 23 close to the clamping opening 11 is further provided with a guide surface 231, the guide surface 231 is outwardly inclinedly arranged in a direction close to the clamping opening 11, which can facilitate the rotating wheel 41 to separate from the limiting groove 23 along the guide surface 231.

[0072] The implementation principle of the embodiment 2 is that: after the clamp in the embodiment is opened by the external clamp opening mechanism, the cooperation between the rotating wheel 41 and the limiting groove 23

[0073] can keep the open state, so that in actual production and processing, the clamp opening mechanism can be arranged at a position away from the PCB clamping station, so as to be suitable for clamping and suspension transfer of the PCB in a narrow space.

[0074] In addition, the opening clamp mechanism in the prior art needs to be arranged at the clamping station of the PCB board, and another set of opening clamp mechanism is necessarily arranged at the unloading station of the rear-end PCB board to open the clamp so as to take the PCB board off the clamp; the clamp in the embodiment has the effect of keeping open, the closing of the clamp is automatically realized by the feeding of the PCB board, and therefore only one set of opening clamp mechanism needs to be arranged at the unloading position, the clamp is kept open after the clamp is opened to take the PCB board off, and the clamp kept open can be circulated to the clamping station of the PCB board again, thereby simplifying the overall process steps and improving the production efficiency to a certain extent.

[0075] Embodiment 3 refers to Figure 7 The embodiment of the application further discloses a clamp, the remaining components are the same as those of the embodiment 1, and details are not repeated here; the difference from the embodiment 1 is that:

[0076] Meanwhile refer to Figure 8 The rotating connection part of the clamping piece 52 and the clamp base 1 is provided with a locking mechanism 7, the locking mechanism 7 is wrapped around the rotating connection part of the clamping piece 52 and the clamp base 1.

[0077] The locking mechanism 7 comprises a fixed piece 71, a movable piece 72 and a third elastic piece 73; the fixed piece 71 is fixedly connected to the clamp base 1, and the connection position of the fixed piece 71 and the clamp base 1 is located at the rotating connection part of the clamping piece 52 and the clamp base 1; one side of the fixed piece 71 facing the linkage piece 51 is provided with a movable groove 711, the third elastic piece 73 is connected to the inner end wall of the movable groove 711, and the movable piece 72 is movably inserted into the movable groove 711 and connected with the third elastic piece 73. The third elastic piece 73 in the embodiment is also a compression spring, and the third elastic piece 73 can always generate a spring force acting on the movable piece 72 and force the movable piece 72 to partially expose in the movable groove 711.

[0078] Refer to Figure 8 The side of the linkage piece 51 close to the fixed piece 71 is provided with an inner recessed clamping groove 511, the shape of the clamping groove 511 is matched with the shape of the movable piece 72, in the opening state, the linkage piece 51 is pushed by the pushing piece 2 to move towards the direction close to the clamping opening 11, so that the clamping groove 511 can be moved to the position opposite to the movable piece 72, at this time, the movable piece 72 can be automatically clamped into the clamping groove 511 under the action of the spring force of the third elastic piece 73, so that the clamp is kept in the open state, which is convenient for use. In the embodiment, the moving direction of the movable piece 72 and the setting direction of the clamping groove 511 are both perpendicular to the extension direction of the extension part 21.

[0079] Refer to Figure 9The inside of the clamping opening 11 is provided with a second unlocking mechanism 8, and the number of the second unlocking mechanism 8 is two groups, and the two groups of second unlocking mechanisms 8 are used to force the movable part 72 to be separated from the clamping groove 511. The second unlocking mechanism 8 includes a second sliding part 81, a fourth connecting rod 82 and a fifth connecting rod 83. The surface of the clamp base body 1 is provided with a second sliding groove 17, the extension direction of the second sliding groove 17 is perpendicular to the extension direction of the extension part 21, and the second sliding part 81 is movably arranged in the second sliding groove 17. The fourth connecting rod 82 is fixedly connected to the second sliding part 81, and the end of the fourth connecting rod 82 away from the second sliding part 81 is fixedly connected to the movable part 72.

[0080] One end of the fifth connecting rod 83 is hinged to the second sliding part 81, the other end of the fifth connecting rod 83 is hinged to another fifth connecting rod 83, and the hinge part of the two fifth connecting rods 83 is partially located in the inside of the clamping opening 11. The hinge part of the two fifth connecting rods 83 is also connected with an extension rod 84, the other end of the extension rod 84 is fixedly connected to the clamp base body 1, and the extension direction of the extension rod 84 is arranged in the same direction as the extension direction of the extension part 21. The extension rod 84 includes two movable rods which are movably sleeved with each other, and the specific structure is prior art, which will not be repeated here; the setting of the extension rod 84 is used to limit the movement path of the fifth connecting rod 83, so that when the PCB board enters the clamping opening 11, the fifth connecting rod 83 can be pushed to move and drive the movable part 72 to be separated from the clamping groove 511, and then the two clamping parts 52 are automatically reset to clamp the PCB board together.

[0081] The implementation principle of the embodiment 3 of the application is that the clip can also be kept in an open state by the way of the embodiment, so that the opening mechanism can be arranged at

[0082] The position away from the PCB clamping station, so as to be suitable for clamping and suspending and transferring the PCB in a narrow space, and the overall process steps are simplified, and the production efficiency is improved to a certain extent.

[0083] The embodiment 4 of the application also discloses a transfer device.

[0084] Referring to Figure 10A kind of transfer device, including rack 9, chain drive mechanism 91 and open clip mechanism;Wherein, chain drive mechanism 91 includes sprocket 911, chain belt 912 and drive motor 913, the number of sprocket 911 is provided with two, two sprocket 911 interval arrangement and respectively rotationally connected in rack 9;Chain belt 912 is installed between two sprocket 911, and chain belt 912 is interval arranged with the clip of embodiment 1 or embodiment 2 or embodiment 3, and PCB board is suspended and transferred by the clip.Hydraulic motor 913 is fixed to rack 9, the output shaft of drive motor 913 is rotationally connected with one of sprocket 911, and chain belt 912 is rotated by controlling drive motor 913 to drive sprocket 911, so that each clip can be moved to the clamping station of PCB board in turn.

[0085] Open clip mechanism includes the top pressure piece fixed to rack 9 and the buffer pad arranged in the movable end of top pressure piece;The top pressure piece of this embodiment is set as hydraulic cylinder, when hydraulic cylinder acts and the movable end of hydraulic cylinder extends outward, buffer pad can abut against the exposed end of extension part 21 and push push piece 2 to move in the direction close to clamping port 11, so as to open the clip and make PCB board enter clamping port 11 and be firmly clamped by clamping piece 52.

[0086] The implementation principle of the transfer device of the embodiment of the application is as follows: by controlling the operation of drive motor 913, drive motor 913 drives chain belt 912 to move, so that each clip can be moved to the station to be clamped of PCB board in turn;Then, the action of top pressure piece is controlled, and top pressure piece drives push piece 2 to move in the direction close to clamping port 11, so that two clamping pieces 52 can move away from each other and smoothly open clamping port 11;The opening range of clamping port 11 opened on both sides is larger, so that it can still be aligned to clamping port 11 when PCB board shakes during suspension and transfer, and the stability of PCB board during suspension and transfer is improved.

[0087] The above is the preferred embodiment of the application, not limited to the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A clip, characterized in that: The utility model relates to a clamping device, including clamp base (1), pusher (2), first elastic part (3), guide mechanism (4) and two groups of clamping mechanism (5), guide mechanism (4) is located in clamp base (1) and forms the limited space, pusher (2) is movably arranged in the limited space inside, one side of clamp base (1) is equipped with the clamping mouth (11), two groups of clamping mechanism (5) are arranged at the two opposite sides of clamping mouth (11) respectively, and each group of clamping mechanism (5) is connected with pusher (2); Wherein, clamping mechanism (5) includes linkage (51) and clamping piece (52), one end of clamping piece (52) is rotatably connected to clamp base (1), linkage (51) is rotatably connected to the middle part of clamping piece (52), one end of pusher (2) close to clamping mouth (11) is equipped with first connecting part, one end of linkage (51) away from clamping piece (52) is rotatably connected to the first connecting part; First elastic part (3) is arranged between pusher (2) and clamp base (1), one end of first elastic part (3) is fixed to clamp base (1), and the other end of first elastic part (3) is connected to pusher (2);In the natural state, first elastic part (3) forces pusher (2) to move away from the direction of clamping mouth (11), and the free end of two clamping pieces (52) is tightly attached to close clamping mouth (11) together; Pusher (2) includes integral elongated part (21) and pusher (22), and elongated part (21) and pusher (22) are arranged at an angle;Elongated part (21) is movably arranged in the limited space, and the first connecting part is arranged in pusher (22);Clamp base (1) is provided with blocking wheel (12), and blocking wheel (12) is located between clamping mouth (11) and pusher (22);In the open state, pusher (22) abuts against blocking wheel (12), the free end of two clamping pieces (52) is away from each other and opens clamping mouth (11); Guide mechanism (4) includes a plurality of rotating wheels (41) rotatably arranged, each rotating wheel (41) is arranged on both sides of the width direction of elongated part (21), and all rotating wheels (41) are arranged along the extension direction of elongated part (21);In the natural state, the connecting position of pusher (22) and elongated part (21) abuts against one of rotating wheels (41); The clamp base (1) is provided with a first sliding groove (13), and the sliding direction of the first sliding groove (13) is perpendicular to the extension direction of the extension part (21); the first sliding groove (13) is internally provided with a first sliding piece (131), and the rotating wheel (41) is rotatably installed on the first sliding piece (131); the first sliding piece (131) and the inner wall of the first sliding groove (13) are provided with a second elastic piece (132), and the second elastic piece (132) is used for forcing the first sliding piece (131) to move towards the extension part (21); the side surface of the extension part (21) is provided with a limiting groove (23) matched with the clamping of the rotating wheel (41), and in the opening state, the rotating wheel (41) is matched and clamped in the limiting groove (23); the clamping opening (11) is further provided with a first unlocking mechanism (6) for forcing the rotating wheel (41) to be separated from the limiting groove (23).

2. The clip of claim 1, wherein: The first unlocking mechanism (6) comprises a first connecting rod (61), a second connecting rod (62) and a third connecting rod (63); wherein one end of the first connecting rod (61) is connected to the first sliding piece (131), the other end of the first connecting rod (61) is slidably arranged on the clamp base (1), and the sliding direction of the first connecting rod (61) is arranged in the same direction as the sliding direction of the first sliding piece (131); one end of the second connecting rod (62) is rotatably connected to the first connecting rod (61), the other end of the second connecting rod (62) is rotatably connected to the third connecting rod (63), and the second connecting rod (62) and the first connecting rod (61) are arranged at an acute angle; the third connecting rod (63) is movably inserted into the clamp base (1); one end of the third connecting rod (63) away from the second connecting rod (62) is partially located inside the clamping opening (11).

3. The clip of claim 1, wherein: The side of the limiting groove (23) close to the clamping opening (11) is provided with a guide surface (231), and the guide surface (231) is inclined outwardly towards the clamping opening (11).

4. The clip of claim 1, wherein: The rotating connection between the clamping piece (52) and the clamp base (1) is provided with a locking mechanism (7), the locking mechanism (7) comprises a fixed piece (71), a movable piece (72) and a third elastic piece (73), the fixed piece (71) is fixedly connected to the clamp base (1), the side of the fixed piece (71) facing the linkage (51) is provided with a movable groove (711), the movable piece (72) is movably inserted into the movable groove (711), and the third elastic piece (73) is arranged between the movable piece (72) and the inner wall of the movable groove (711); The side of the linkage (51) close to the fixed piece (71) is provided with a clamping groove (511), the clamping groove (511) is matched with the insertion of the movable piece (72), and in the opening state, the movable piece (72) is matched and inserted into the clamping groove (511); the clamping opening (11) is further provided with a second unlocking mechanism (8) for forcing the movable piece (72) to be separated from the clamping groove (511).

5. The clip of claim 4, wherein: The second unlocking mechanism (8) is provided with two groups, and the two groups of second unlocking mechanisms (8) are used for forcing the movable part (72) to be separated from the clamping groove (511); wherein the second unlocking mechanism (8) comprises a second sliding part (81), a fourth connecting rod (82) and a fifth connecting rod (83), the clamp base body (1) is provided with a second sliding groove (17), and the second sliding part (81) is slidingly arranged in the second sliding groove (17); the fourth connecting rod (82) is fixedly connected to the second sliding part (81), and one end, away from the second sliding part (81), of the fourth connecting rod (82) is fixedly connected to the movable part (72); one end of the fifth connecting rod (83) is hingedly connected to the second sliding part (81), and the other end of the fifth connecting rod (83) is hingedly connected to another fifth connecting rod (83); the hinged portions of the two fifth connecting rods (83) are partially located in the clamping opening (11).

6. The clip of claim 5, wherein: The hinged portions of the two fifth connecting rods (83) are provided with telescopic rods (84), one end, away from the fifth connecting rod (83), of the telescopic rod (84) is connected to the clamp base body (1); and the telescopic direction of the telescopic rod (84) is arranged in the same direction as the extension direction of the extension part (21).

7. A transfer device comprising a frame (9), a chain drive (91) and an opening mechanism (92), characterized in that: The chain transmission mechanism (91) comprises a chain belt (912) fixed to the rack (9) and a driving motor (913) for driving the chain belt (912) to rotate, and the chain belt (912) is arranged with the clamps as claimed in any one of claims 1-6; the clamping opening mechanism (92) comprises a top pressing part fixed to the rack (9), and the movable end of the top pressing part is opposite to the pusher (2); in the open state of the clamps, the movable end of the top pressing part protrudes outward and moves the pusher (2) to the direction close to the clamping opening (11).

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