A width adjustment mechanism

Abstract

The present invention discloses a width adjustment mechanism, which relates to the technical field of circuit board conveying. It includes a frame body, and also includes: an opposed sensor, a horizontal frame, a vertical frame, a connecting frame, side plates, a first driving member, a conveyor belt, a horizontal driving mechanism and a locking and releasing mechanism. The locking and releasing mechanism includes: a telescopic member, a positioning pin and a locking assembly. The locking assembly includes: a fixing plate, a fixing cylinder, a sliding plate, a sliding cylinder, an elastic member, a limiting seat, a roller and an inclined plate. The structure of the present invention is compact and occupies a small space. The width adjustment is realized by using the existing horizontal driving mechanism, saving the motor and the motion mechanism. Moreover, the present invention does not need to use expensive drag chain cables, saving costs and leaving a larger space inside the drag chain at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board conveying, and specifically to a width adjustment mechanism. Background Art

[0002] A circuit board, also known as a printed wiring board or printed circuit board, plays an important role in miniaturizing and visualizing circuits, mass-producing fixed circuits, and optimizing the layout of electrical appliances by providing a connection circuit between various components. As electronic devices become more complex and require more components, the circuits and components on the PCB surface become more and more dense.

[0003] During the production and processing of circuit boards, they need to be conveyed. Since different types of circuit boards have different sizes, in order to convey multiple types of circuit boards with the same device, it is necessary to adjust the distance between two conveyor belts to adapt to the corresponding size of the circuit board. Traditional width adjustment mechanisms require additional motors and drive mechanisms, which occupy a large space and increase the usage cost. Therefore, there is an urgent need for a width adjustment mechanism to solve the above problems. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a width adjustment mechanism to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A width adjustment mechanism includes a frame body, and further includes:

[0007] An opposed sensor, connected to the frame body;

[0008] A horizontal frame, slidably connected to the frame body;

[0009] A vertical frame, connected to the horizontal frame;

[0010] A connecting frame, slidably connected to the vertical frame;

[0011] Side plates, there are two groups of the side plates. One group of the side plates is slidably connected to the connecting frame, and the other group of the side plates is connected to the connecting frame. Guide rails are provided on the opposite sides of the two groups of the side plates;

[0012] A first driving member, connected to the side plates;

[0013] A conveyor belt, connected to the guide rails and connected to the output end of the first driving member;

[0014] A horizontal driving mechanism, one end of which is connected to the frame body and the other end is connected to the horizontal frame, for driving the horizontal frame to move horizontally;

[0015] The locking and releasing mechanism is connected to the frame body at one end and to a group of the side plates at the other end, and is used for locking and releasing the side plates slidably connected to the connecting frame.

[0016] As a further scheme of the present invention: The horizontal driving mechanism includes:

[0017] A second driving member, connected to the frame body;

[0018] A threaded rod, connected to the output end of the second driving member and threadedly connected to the cross frame;

[0019] A fixed base, connected to the frame body and rotatably connected to the threaded rod.

[0020] As a further scheme of the present invention: The locking and releasing mechanism includes:

[0021] A telescopic member, connected to the frame body;

[0022] A positioning pin, connected to the output end of the telescopic member;

[0023] A locking assembly, connected to a group of the side plates at one end and to the connecting frame at the other end, and is used for locking the side plates slidably connected to the connecting frame.

[0024] As a further scheme of the present invention: The locking assembly includes:

[0025] A fixing plate, connected to a group of the side plates;

[0026] A fixed cylinder, connected to the fixing plate;

[0027] A sliding plate, connected to the fixed cylinder;

[0028] A sliding cylinder, connected to the sliding plate and slidably connected to the fixed cylinder;

[0029] An elastic member, connected to the fixing plate at one end and to the sliding plate at the other end;

[0030] A limiting seat, connected to the sliding plate, and a clamping groove is provided on the limiting seat, and the clamping groove is matched with the positioning pin;

[0031] A roller, rotatably connected to the sliding plate;

[0032] An inclined plate, connected to the connecting frame, and the upper part of the inclined plate near the roller is a hypotenuse.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The present invention has a compact structure and small occupied space. The width adjustment is realized by using the existing horizontal driving mechanism, saving the motor and the motion mechanism. And the present invention does not need to use expensive drag chain cables, saving costs and leaving a larger space inside the drag chain. Brief Description of the Drawings

[0035] Figure 1 This is a schematic structural diagram of a width adjustment mechanism in an embodiment of the present invention.

[0036] Figure 2 This is a schematic structural diagram of a locking and releasing mechanism in an embodiment of the present invention.

[0037] Figure 3 This is a schematic structural diagram of a locking component in an embodiment of the present invention.

[0038] In the figure: 1, frame body; 2, opposed sensors; 3, horizontal frame; 4, vertical frame; 5, connecting frame; 6, side plate; 7, first driving member; 8, conveyor belt; 9, second driving member; 10, threaded rod; 11, fixed base; 12, telescopic member; 13, fixing plate; 14, sliding plate; 15, fixed cylinder; 16, sliding cylinder; 17, elastic member; 18, limit seat; 19, roller; 20, inclined plate; 21, positioning pin. Detailed Description of the Embodiment

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0040] In an embodiment of the present invention, please refer to Figures 1 to 3 , a width adjustment mechanism, including a frame body 1, further including:

[0041] Opposed sensors 2, connected to the frame body 1;

[0042] Horizontal frame 3, slidably connected to the frame body 1;

[0043] Vertical frame 4, connected to the horizontal frame 3;

[0044] Connecting frame 5, slidably connected to the vertical frame 4;

[0045] Side plates 6, there are two groups of the side plates 6, one group of the side plates 6 is slidably connected to the connecting frame 5, the other group of the side plates 6 is connected to the connecting frame 5, and guide rails are provided on the opposite sides of the two groups of the side plates 6;

[0046] First driving member 7, connected to the side plate 6;

[0047] Conveyor belt 8, connected to the guide rail and connected to the output end of the first driving member 7;

[0048] A horizontal driving mechanism, with one end connected to the frame 1 and the other end connected to the cross-frame 3, is used to drive the cross-frame 3 to move horizontally;

[0049] A locking and releasing mechanism, with one end connected to the frame 1 and the other end connected to a group of the side plates 6, is used to lock and release the side plates 6 that are slidably connected to the connecting frame 5.

[0050] A longitudinal driving mechanism (not shown in the figure) is provided on the vertical frame 4. The longitudinal driving mechanism is connected to the connecting frame 5 and is used to drive the connecting frame 5 to move longitudinally. In the initial state, the locking and releasing mechanism locks a group of side plates 6. When it is necessary to adjust the distance between the two groups of side plates 6, the horizontal driving mechanism drives the cross-frame 3 to move horizontally, thereby driving the two groups of side plates 6 to move horizontally. The pair of sensors 2 monitors the position of the cross-frame 3. When the designated position is reached, the horizontal driving mechanism stops working, the locking and releasing mechanism releases the lock on the side plates 6, the horizontal driving mechanism continues to work, drives the cross-frame 3 to move horizontally, the cross-frame 3 drives the connecting frame 5 to move horizontally, thereby driving a group of side plates 6 connected thereto to move horizontally, and the side plates 6 slidably connected thereto stop moving, thereby adjusting the distance between the two groups of side plates 6. After the adjustment is completed, the locking and releasing mechanism locks the side plates 6 again. The first driving member 7 drives the conveyor belt 8 to rotate, places the circuit board on the two conveyor belts 8, and transports the circuit board through the conveyor belt 8. The first driving member 7 can be a stepper motor, a servo motor, etc.

[0051] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the horizontal driving mechanism includes:

[0052] A second driving member 9, connected to the frame 1;

[0053] A threaded rod 10, connected to the output end of the second driving member 9 and threadedly connected to the cross-frame 3;

[0054] A fixed base 11, connected to the frame 1 and rotatably connected to the threaded rod 10.

[0055] The second driving member 9 drives the threaded rod 10 to rotate. The fixed base 11 ensures the stable rotation of the threaded rod 10, and the threaded rod 10 drives the cross-frame 3 to move horizontally. The second driving member 9 can be a stepper motor, a servo motor, etc.

[0056] As an embodiment of the present invention, please refer to Figures 1 to 3 , the locking and releasing mechanism includes:

[0057] An expansion member 12, connected to the frame 1;

[0058] A positioning pin 21, connected to the output end of the expansion member 12;

[0059] The locking component is connected to one group of the side plates 6 at one end and to the connecting frame 5 at the other end, and is used to lock the side plate 6 that is slidably connected to the connecting frame 5.

[0060] In the initial state, the locking component locks the side plate 6 that is slidably connected to the connecting frame 5, so that this group of side plates 6 is locked together with the connecting frame 5. When it is necessary to adjust the distance between the two groups of side plates 6, after the horizontal driving mechanism drives the cross frame 3 to move to the designated position, the telescopic member 12 works to drive the positioning pin 21 to move longitudinally. The positioning pin 21 drives the locking component to move longitudinally, so that the locking component releases the limit on the side plate 6. The horizontal driving mechanism works again to drive the cross frame 3 to move, so that the other group of side plates 6 moves horizontally. The side plate 6 that is slidably connected to the connecting frame 5 cannot follow the connecting frame 5 due to the limitation of the telescopic member 12 and the positioning pin 21, thereby adjusting the distance between the two groups of side plates 6. After the adjustment is completed, the telescopic member 12 moves in the reverse direction, so that the positioning pin 21 disengages from the locking component, and the locking component locks the side plate 6 again. The telescopic member 12 can be a cylinder, an electric telescopic rod, etc.

[0061] As an embodiment of the present invention, please refer to Figures 1 to 3 , the locking component includes:

[0062] The fixed plate 13 is connected to one group of the side plates 6;

[0063] The fixed cylinder 15 is connected to the fixed plate 13;

[0064] The sliding plate 14 is connected to the fixed cylinder 15;

[0065] The sliding cylinder 16 is connected to the sliding plate 14 and is slidably connected to the fixed cylinder 15;

[0066] The elastic member 17 is connected to the fixed plate 13 at one end and to the sliding plate 14 at the other end;

[0067] The limit seat 18 is connected to the sliding plate 14. A clamping groove is provided on the limit seat 18, and the clamping groove is matched with the positioning pin 21;

[0068] The roller 19 is rotatably connected to the sliding plate 14;

[0069] The inclined plate 20 is connected to the connecting frame 5. The upper part of the inclined plate 20 is a bevel on the side close to the roller 19.

[0070] In the initial state, the elastic member 17 is in a compressed state. The elastic member 17 generates a reaction force to squeeze the sliding plate 14, causing the roller 19 to abut against the inclined plate 20. A frictional force is generated between the roller 19 and the inclined plate 20 to limit the side plate 6, enabling the side plate 6 to move along with the connecting frame 5. When it is necessary to adjust the distance between the two sets of side plates 6, after the horizontal driving mechanism drives the cross frame 3 to a specified position, the telescopic member 12 operates to drive the positioning pin 21 to move longitudinally. The positioning pin 21 is inserted into the internal card slot of the limit seat 18. The positioning pin 21 drives the limit seat 18 to move longitudinally. The limit seat 18 drives the sliding plate 14 to move longitudinally. The sliding plate 14 drives the roller 19 to move longitudinally, causing the roller 19 to disengage from the inclined plate 20. At the same time, the elastic member 17 undergoes elastic deformation. When the horizontal driving mechanism drives the connecting frame 5 to move horizontally again, since the positioning pin 21 is inserted into the card slot, the limit seat 18 is limited, and thus the side plate 6 is limited, enabling one set of side plates 6 to remain stationary while the other set of side plates 6 moves horizontally along with the connecting frame 5, thereby adjusting the distance between the two sets of side plates 6. After the adjustment is completed, the telescopic member 12 drives the positioning pin 21 to move in the reverse direction and disengage from the limit seat 18. Under the reaction force of the elastic member 17, the roller 19 is made to abut against the inclined plate 20 again to limit the side plate 6. The elastic member 17 can be a spring, a spring sheet, etc.

[0071] The working principle of the present invention is as follows: In the initial state, the elastic member 17 is in a compressed state. The elastic member 17 generates a reaction force to squeeze the sliding plate 14, causing the roller 19 to abut against the inclined plate 20. A frictional force is generated between the roller 19 and the inclined plate 20 to limit the side plate 6. When it is necessary to adjust the distance between the two sets of side plates 6, the second driving member 9 drives the threaded rod 10 to rotate. The fixed base 11 ensures the stable rotation of the threaded rod 10. The threaded rod 10 drives the cross frame 3 to move horizontally, thereby driving the two sets of side plates 6 to move horizontally. The pair of sensors 2 monitors the position of the cross frame 3. When the specified position is reached, the second driving member 9 stops operating. The telescopic member 12 operates to drive the positioning pin 21 to move longitudinally. The positioning pin 21 is inserted into the internal card slot of the limit seat 18. The positioning pin 21 drives the limit seat 18 to move longitudinally. The limit seat 18 drives the sliding plate 14 to move longitudinally. The sliding plate 14 drives the roller 19 to move longitudinally, causing the roller 19 to disengage from the inclined plate 20. At the same time, the elastic member 17 undergoes elastic deformation. At this time, the second driving member 9 operates again to drive the connecting frame 5 to move horizontally. Since the positioning pin 21 is inserted into the card slot, the limit seat 18 is limited, and thus the side plate 6 is limited, enabling one set of side plates 6 to remain stationary while the other set of side plates 6 moves horizontally along with the connecting frame 5, thereby adjusting the distance between the two sets of side plates 6. After the adjustment is completed, the telescopic member 12 drives the positioning pin 21 to move in the reverse direction and disengage from the limit seat 18. Under the reaction force of the elastic member 17, the roller 19 is made to abut against the inclined plate 20 again to limit the side plate 6.

[0072] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0073] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A width-adjusting mechanism, comprising a frame body, characterized in that, It further includes: An opposed sensor, connected to the frame; A cross frame, slidably connected to the frame; A vertical frame, connected to the cross frame; A connecting frame, slidably connected to the vertical frame; Side plates, there are two groups of the side plates, one group of the side plates is slidably connected to the connecting frame, the other group of the side plates is connected to the connecting frame, and guide rails are provided on the opposite sides of the two groups of the side plates; A first driving member, connected to the side plate; A conveyor belt, connected to the guide rail and connected to the output end of the first driving member; A horizontal driving mechanism, one end of which is connected to the frame and the other end is connected to the cross frame, for driving the cross frame to move horizontally; A locking and releasing mechanism, one end of which is connected to the frame and the other end is connected to one group of the side plates, for locking and releasing the side plate slidably connected to the connecting frame; The locking and releasing mechanism includes: A telescopic member, connected to the frame; A positioning pin, connected to the output end of the telescopic member; A locking component, one end of which is connected to one group of the side plates and the other end is connected to the connecting frame, for locking the side plate slidably connected to the connecting frame; The locking component includes: A fixing plate, connected to one group of the side plates; A fixing cylinder, connected to the fixing plate; A sliding plate, connected to the fixing cylinder; A sliding cylinder, connected to the sliding plate and slidably connected to the fixing cylinder; An elastic member, one end of which is connected to the fixing plate and the other end is connected to the sliding plate; A limiting seat, connected to the sliding plate, and a clamping groove is provided on the limiting seat, and the clamping groove is matched with the positioning pin; A roller, rotatably connected to the sliding plate; An inclined plate, connected to the connecting frame, and the upper part of the inclined plate close to the roller is a hypotenuse; In the locked state, the roller abuts against the inclined plate, and the positioning pin is in a separated state from the limiting seat; in the width-adjusting state, the positioning pin is inserted into the clamping groove on the limiting seat, and the roller is separated from the inclined plate.

2. The width adjustment mechanism according to claim 1, characterized in that, The horizontal driving mechanism includes: A second driving member, connected to the frame; A threaded rod, connected to the output end of the second driving member and threadedly connected to the cross frame; A fixed base, connected to the frame and rotatably connected to the threaded rod.

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