TWM587869U - Limiting device of PCB frame clip bracket - Google Patents

Abstract

The present invention provides a limiting device for a PCB frame clip bracket, which includes two clip arms that are symmetrically arranged on both sides of a cross bar that can be swiveled relative to each other. The two clip arms each form a span, and the two A PCB accommodating slot is formed around the frame between the cross section and the cross bar. The PCB accommodating slot has a PCB accommodating inlet. Two elastic elements are symmetrically arranged on the two clamping arms, and the two elastic elements respectively drive the two. The two clamping arms are configured to pinch the PCB insertion inlet in a reverse rotation, and two stoppers are symmetrically arranged on the outside of the two clamping arms. The two clamping arms are configured to pinch the PCB insertion inlet in a reverse rotation. The two limiters are accepted to be held along a reference plane, so as to improve the problem that it is difficult to accurately clamp the PCB due to shaking when the clamp arm swings in the traditional bracket.

Description

Limiting device of PCB frame clip bracket

The present invention relates to the structure technology of PCB jigs, and in particular to a limit device for a PCB frame clip type bracket.

During the manufacturing process of the printed circuit board (Printed circuit board, referred to as PCB), the processes such as ink coating, drying, and baking are usually used, and the conveying equipment is usually used to carry the PCB one by one through the work station of the above process to improve Capacity.

In PCB conveying equipment, it is often seen to use clamps to clamp the edges of the PCB, so that the PCB is held in a suspended form by the clamps, and the movable parts such as chains or belts are used to drive the clamps to move, thereby carrying The suspended PCB moves on the production line through the work station of the above process.

Taking the existing PCB baking equipment as an example, a continuous mobile PCB has been used to enter the tunnel oven for baking operations; for this reason, a loop-movable conveyor line is commonly used, and fixtures (such as (Taiwan Patent I225029). This fixture is used to clamp a frame part of the PCB that is not covered with ink, so that each piece of PCB can be held by the fixture at intervals, and moved into the oven in a hanging manner on the conveyor line to receive bake.

It is also known that the PCB is generally a quadrangular thin plate, and the area specifications (that is, the length and width dimensions) of the PCB are large or small, and the plate body is thick or thin. When the above-mentioned clamp is used to hang and transport the PCB through the oven, it is easy to cause the clamped PCB to shake, and the thinner the PCB, the more obvious the shaking phenomenon is.

Therefore, the industry usually increases the distance between the hanging fixtures on the PCB conveyor line in the oven to avoid accepting the clamped PCB during the mobile baking process. Defects such as ink sticking due to shaking. When the distance between the hanging fixtures on the board conveying line in the oven is larger, the number of pieces that can be hung on the oven to be baked in a unit of time will be relatively restricted, which will hinder the improvement of PCB baking capacity. .

In order to solve this problem, the industry developed a PCB frame clip bracket as disclosed in the Taiwan Patent No. I660655 and a method for carrying the PCB by using the bracket. The brackets are used to fix multiple edges of a quadrangular PCB. It can prevent the PCB from shaking during the mobile baking process, thereby reducing the distance between the PCB and other PCBs during the mobile baking process, and can effectively improve the PCB baking capacity.

However, in the above-mentioned Taiwan Patent No. I660655, the two clamp arms of the bracket are used to clamp the two ends of the PCB in a swinging manner. The length of the clamping arm will be increased due to the larger area of the clamped PCB between the end spans, which will cause the excessively long clamping arm to easily shake during the swing process, making it difficult to accurately align the spans. The end edges of the PCB are clamped. Therefore, how to avoid the excessively long clamping arm from shaking during the swinging process, so that the span can accurately clamp the end edges of the PCB has become a subject to be improved.

In view of this, the purpose of the present invention is to improve the problem that it is difficult to accurately clamp the PCB due to shaking when the clamp arm swings in the traditional bracket.

In order to solve the above-mentioned problem, the present invention provides a PCB frame clip-type bracket limiting device, which includes: two clamp arms, which are symmetrically arranged on both sides of a cross bar used as a fixed end, which can be symmetrically swiveled relative to each other. A clamp portion is symmetrically formed on the clamp arm, and a PCB receiving slot is formed around the frame between the two span portion and the crossbar. The PCB receiving slot has a PCB receiving inlet at an end relatively far from the crossbar. Two elastic elements are symmetrically arranged on the two clamp arms, and the two elastic elements respectively drive the two clamp arms to relatively reversely swing and clamp the PCB insertion inlet; two open clamp pushers are symmetrically disposed on the two clamps. On the outside of the arm, the two-clamp pushers respectively drive the two-clamp arms to elastically open the PCB placement inlet in a forward swing; and two limiters are symmetrically disposed on the outside of the two-clamp arms. The two clamping arms accept the two limiters to be protected along a reference plane during the process of pinching the PCB insertion inlet in the reverse rotation.

In a further implementation, the reference plane is parallel to the ground. The reference plane is connected to a transmission plane. The transmission surface is constructed by a plurality of rolling wheels. The two open-clamp pushers and the two limiters are respectively located on the reference plane.

In a further implementation, the two clamp arms respectively have a first arm portion, a second arm portion, and a pivotal portion located between the first arm portion and the second arm portion, and the two clamp arms They are arranged symmetrically on both sides of the crossbar via the pivoting portions, the cross-section is formed on the first arm portion, and the two open-clamp pushers drive and release each of the second arm portions in a pressure-contact manner. Wherein, the two span portions each have a clamping opening for clamping the PCB. The jaw is V-shaped. The length of the first arm portion is greater than the length of the second arm portion.

In a further implementation, each of the limiters has two limit rods, a limit slot is formed between the two limit rods, and the two limit rods can relatively open and close the limit slot. The slot is located on one end side of the reference plane, and protects two opposite end faces of each of the clamping arms. The two limiting rods are oppositely disposed on the upper and lower edges of one end side of the reference plane. The two limiting rods open and close the limiting slot in a swinging manner. The two limiting rods open and close the limiting slot in a vertically moving manner. The two opposite end surfaces are respectively formed on a first arm portion of each of the clamp arms. The two opposite end surfaces are respectively formed at the pivot joint portions of the clamping arms.

In a further implementation, a two-clamp pusher is further included, and the two-clamp pushers are symmetrically arranged on the outside of the two-clamp arms. Between the two clamps, the two closed clamp pushers respectively drive the first arm portions in a pressure-contact manner, so that the two clamp arms clamp the PCB into the inlet. The two open clamp pushers, the two limiters and the two closed clamp pushers are respectively located on the reference plane.

In a further implementation, the cross bar is bridged on a double-rotating conveying chain inside a device. The bracket is moved to a picking end by the conveying chain. The device is an oven.

According to the above-mentioned technical means, the technical effects that the new model can produce are: Yu: The clamp arm is protected by the limiter to avoid shaking during rotation, so that the clamp arm can accurately clamp the PCB.

In addition, related technical details on which the new model can be implemented will be explained in subsequent implementations and drawings.

10‧‧‧ Bracket

101‧‧‧PCB receiving slot

102‧‧‧PCB entrance

103‧‧‧ datum plane

11‧‧‧ Crossbar

111‧‧‧ Block

112‧‧‧pole

12‧‧‧ Clamp Arm

121‧‧‧ first arm

122‧‧‧Second Arm

123‧‧‧ Pivot

124‧‧‧ Cross Section

125‧‧‧ jaw

125, 126‧‧‧ face

13‧‧‧Elastic element

20‧‧‧ Opening pusher

30a, 30b ‧‧‧ stopper

301, 302‧‧‧ limit lever

303‧‧‧ limit slot

40‧‧‧closed pusher

50‧‧‧ conveyor chain

501‧‧‧Capture terminal

60‧‧‧Scroll wheel

61‧‧‧Transmission surface

70‧‧‧PCB

80‧‧‧ Equipment

FIG. 1 is a top view of the novel limiting device.

FIG. 2 is a front view of FIG. 1.

FIG. 3 is a schematic perspective view of the first embodiment of the stopper in FIG. 1.

FIG. 4 is a schematic perspective view of a second embodiment of the stopper in FIG. 1.

5a to 5d are schematic diagrams of the operations of FIG. 1, respectively.

First, please refer to FIG. 1, FIG. 2, and FIG. 3 together to disclose the aspect of a preferred embodiment of the present invention, and explain the limit device of the PCB frame clip bracket provided by the present invention, including two open-clamp pushers. 20 and two limiters 30a. Wherein: the main structure of the PCB frame clip bracket 10 includes a cross bar 11, two clamp arms 12, and two elastic elements 13, wherein the cross bar 11 is used as a fixed end, and at least one of the cross bar 11 is protruded near the middle section. The sheet-like blocking portion 111 is used to support the PCB 70. The two clamping arms 12 are symmetrically disposed on both sides of the crossbar 11, so that the blocking portion 111 is located between the two clamping arms 12. A span portion 124 for clamping the PCB 70 is formed symmetrically on the two clamping arms 12, and a PCB receiving slot 101 is formed between the two span portion 124 and the blocking portion 111 to form a PCB receiving slot. The end of 101, which is relatively far from the blocking portion 111, has a PCB receiving inlet 102, so that the PCB 70 can enter and exit the PCB receiving slot 101 through the PCB receiving inlet 102.

In specific implementation, the crossbar 11 is bridged on both sides of a conveying chain 50 that can be rotated in the interior of a device 80, so that the carriage 10 can be moved in a circle by being driven by the conveying chain 50. The bracket 10 can be moved to a picking end 501 to pick up the PCB 70 by the conveying chain 50. The device 80 may be an oven in practice, but is not limited thereto.

A vertical pole 112 is respectively convex on both sides of the crossbar 11. A pivot joint portion 123 is formed symmetrically on each of the two clamp arms 12, and the two clamp arms 12 are pivotally connected to the pole 112 via the pivot joint portion 123. It is further pivotably connected to both sides of the crossbar 11 in a pivotable manner. Further, the two clamp arms 12 each have a first arm portion 121 and a second arm portion 122. The span portion 124 is formed on the first arm portion 121, and the pivot portion 123 is located on the first arm. Between the portion 121 and the second arm portion 122. The length of the first arm portion 121 is greater than the length of the second arm portion 122, so that the two clamping arms 12 can clamp PCBs 70 of different sizes. Furthermore, the two-span portions 124 each have a clamping opening 125, and the two-span portions 124 clamp the PCB 70 through the clamping openings 125. The jaw 125 may be V-shaped or other geometric shapes.

The two clamping arms 12 are symmetrically disposed with two elastic elements 13, and the two elastic elements 13 are used to drive the two clamping arms 12 to pinch the PCB insertion inlet 102 in a reverse rotation. Further, the two elastic elements 13 are implemented as torsion springs, and are respectively disposed on the two pivot joint portions 123. Both ends of the two torsion springs are respectively pressed against the second arm portion 122 and the cross bar of the clamp arm 12. The uprights 112 on 11 enable the first arm portions 121 of the two clamping arms 12 to swing in a relatively close direction through the driving of the two elastic elements 13 respectively, thereby pinching the PCB placement inlet 102.

The two-clamping pushers 20 are symmetrically arranged on the outside of the two-clamping arms 12, and the two-clamping pushers 20 can respectively drive the two-clamping arms 12 to elastically open the PCB insertion inlet 102 in a forward rotation. The clamp pusher 20 may be a pneumatic cylinder in practice. Further, the two-clamp pusher 20 can press the second arm portion 122 of the two-clamp arm 12 respectively. When the two-clamp pusher 20 exerts a greater force on the second arm portion 122 than the two elastic elements 13 apply to When the elastic force of the second arm portion 122 causes the first arm portion 121 of the two clamp arms 12 to swing in a direction away from each other, the PCB insertion inlet 102 is opened. Conversely, when the two-clamp pusher 20 releases the second arm portion 122, the first arm portion 121 of the two-clamp arm 12 is swiveled in a relatively close direction by the driving of the two elastic elements 13, respectively, thereby pinching the PCB.放入 102。 Set the entrance 102.

The two limiters 30a are symmetrically arranged on the outside of the two clamp arms 12, and the two clamp arms 12 are received during the process of pinching the PCB insertion inlet 102 in a reverse rotation. The two limiters 30a are protected along a reference plane 103, which is parallel to the ground, and the two open clip pushers 20 and the two limiters 30a are respectively located on the reference plane 103, and the The reference plane 103 is externally connected to a transmission surface 61. The transmission surface 61 is implemented by a plurality of rolling wheels 60 in practice. Further, each of the limiters 30a has two limit levers 301 and 302, a limit groove 303 is formed between the two limit levers 301 and 302, and the two limit levers 301 and 302 can be relatively stretched. The limiting slot 303 is opened and closed. The limiting slot 303 is located on one end side of the reference plane 103, so that the two limiting rods 301, 302 are disposed on the upper and lower edges of one end side of the reference plane 103, respectively, to protect the second Opposing the end faces 125 and 126 to guide each of the two clamping arms 12 to swing along the reference plane 103, so that the clamping mouth 125 on the span 124 follows the reference plane 103, so that the clamping mouth 125 can accurately clamp the PCB 70 . In practice, the two opposite end faces 125 and 126 may be formed on the first arm portion 121 (as shown in FIG. 3) of each of the clamp arms 12, or may be formed on the pivot joint portion 123 of each of the clamp arms 12 ( As shown in Figure 4). The two opposite end faces 125 and 126 are defined in the present invention as the end faces of the two clamp arms 12 that are parallel to the swing direction of the two clamp arms 12, that is, the end faces that are perpendicular to the rotation axis of the two clamp arms 12. In practice, the end surface may be an end surface outside the two clamp arms 12 or an end surface inside the two clamp arms 12. In specific implementation, as shown in FIG. 3, the two limit rods 301 and 302 of each of the limiters 30 a open and close the limit slot 303 in a swinging manner. Alternatively, as shown in FIG. 4, the two limit levers 301 and 302 of each of the limiters 30 b open and close the limit slot 303 by moving vertically.

Please refer to FIG. 1, FIG. 2, and FIG. 3 in combination to explain that the present invention further includes a two-clamp pusher 40 which is symmetrically arranged on the outside of the two-clamp arms 12, and each of the stoppers 30 a is located Between each of the opening clamp pushers 20 and each of the closing clamp pushers 40, the two opening clamp pushers 20, the two limiters 30 a and the two closing clamp pushers 40 are respectively located on the reference plane 103. The two closed clip pushers 40 can respectively drive the two clip arms 12 to pinch the PCB placement inlet 102. The closed-clamp pusher 40 may be a pneumatic cylinder in practice. Further, the two closed clamp pushers 40 can press the first arm portions 121 of the two clamp arms 12 respectively, and when the two stoppers 30a protect the two clamp arms 12, respectively, The two-clamp pusher 40 applies a pushing force to the first arm portion 121 to cause the first arm portion 121 of the two-clamp arm 12 to swing in a relatively close direction along the limiting groove 303, thereby pinching the PCB placement inlet 102.

According to the above configuration, please refer to FIGS. 5 a to 5 d in succession, and sequentially disclose the action explanatory diagrams of the new model, explaining that when the carriage 10 is moved to the pickup end 501 by the conveying chain 50, the carriage 10 is opened through the clamp Driven by the pusher 20, the PCB insertion inlet 102 is opened (as shown in FIG. 5 a). At the same time, the limiter 40 closes its limit slot 303 to protect the two clamp arms 12. Then, the PCB 70 enters the PCB accommodating slot 101 (as shown in FIG. 5b) through the PCB loading inlet 102 via the carrying of the scroll wheel 60. When the end of the PCB 70 contacts the stopper 111, the open clamp pusher 20 releases the two clamp arms 12, so that the two clamp arms 12 can be driven along the reference plane through the driving of the elastic element 13 and the closed clamp pusher 40, respectively. 103 rotates in a relatively close direction to pinch the PCB insertion inlet 102 (as shown in FIG. 5c), so that the two clamping arms 12 grip the PCB 70 (as shown in FIG. 5d). Then, the limiter 40 opens its limit slot 303 so that the bracket 10 holding the PCB 70 is driven away from the capturing end 501 by the conveying chain 50.

The above embodiments merely express the preferred embodiments of the present invention, but cannot be construed as limiting the scope of the patent of the present invention. Therefore, the new model shall be subject to the content of the claims defined in the scope of the patent application.

Claims (20)

A limiting device for a PCB frame clip-type bracket includes: two clip arms, which are symmetrically arranged on both sides of a cross bar used as a fixed end, which can be symmetrically rotated relative to each other, and the two clip arms respectively form a span symmetrically. A frame is formed between the two-span portion and the cross bar to form a PCB receiving slot. The end of the PCB receiving slot relatively far from the cross bar has a PCB receiving inlet. The two clamping arms are symmetrically disposed on the two clamping arms. Two elastic elements, which respectively drive the two clamping arms to pivotally clamp the PCB insertion inlet in a reverse rotation; two opening clamp pushers are symmetrically arranged on the outside of the two clamping arms, and the two openings The clamp pushers respectively drive the two clamp arms to elastically open the PCB placement entrance in a forward swing; and two limiters are symmetrically arranged on the outside of the two clamp arms, and the two clamp arms are pivoted in the reverse direction. During the process of pinching the PCB into the ground, the two limiters are accepted for protection along a reference plane. The limit device of the PCB frame clip bracket according to claim 1, wherein the reference plane is parallel to the ground. The limiting device of the PCB frame clip bracket according to claim 2, wherein the reference plane is externally connected to a transmission surface. The limit device of the PCB frame clip bracket according to claim 3, wherein the transmission surface is constructed by a plurality of rolling wheels. The limiting device of the PCB frame clip bracket according to claim 1, 2 or 3, wherein the two open clip pushers and the two limiters are respectively located on the reference plane. The limit device of the PCB frame clip bracket according to claim 2, wherein the two clip arms have a first arm portion, a second arm portion, and a first arm portion and a second arm, respectively. The two clamping arms are symmetrically disposed on both sides of the crossbar through the pivoting portions, respectively, and the span portion is formed on the first arm portion. The touch driving and releasing each of the second arm portions. The limiting device of the PCB frame clip bracket according to claim 6, wherein each of the two spans has a clamping opening for clamping the PCB. The limiting device of the PCB frame clip bracket according to claim 7, wherein the clip is V-shaped. The limiting device of the PCB frame clip bracket according to claim 6, wherein the length of the first arm portion is greater than the length of the second arm portion. The limit device of the PCB frame clip bracket according to claim 6, wherein each of the limiters has two limit levers, a limit groove is formed between the two limit levers, and the two limit levers The limiting groove can be relatively opened and closed. The limiting groove is located on one end side of the reference plane, and respectively protects two opposite end faces of the clamping arms. The limit device of the PCB frame clip bracket according to claim 10, wherein the two limit rods are oppositely disposed on the upper and lower edges of one end side of the reference plane. The limit device of the PCB frame clip bracket according to claim 11, wherein the two limit levers are used to open and close the limit slot in a swinging manner. The limiting device of the PCB frame clip bracket according to claim 11, wherein the two limiting rods open and close the limiting slot by moving vertically. The limiting device of the PCB frame clip bracket according to claim 10, wherein the two opposite end surfaces are respectively formed on a first arm portion of each of the clip arms. The limiting device of the PCB frame clip bracket according to claim 10, wherein the two opposite end surfaces are respectively formed at the pivot joints of the clip arms. The limit device of the PCB frame clip bracket according to claim 6, further comprising two closed clip pushers, the two closed clip pushers are symmetrically arranged outside the two clip arms, and each of the limiters is located Between each of the open-clamp pushers and each of the closed-clamp pushers, the two closed-clamp pushers drive the first arm portions in a pressure-contact manner respectively, so that the two-clamped arms clamp the PCB into the inlet. The limiting device of the PCB frame clip bracket according to claim 16, wherein the two open clip pushers, the two limiters and the two closed clip pushers are respectively located on the reference plane. The limit device of the PCB frame clip bracket according to claim 1, wherein the cross bar is bridged on a double-rotating conveying chain inside a device. The limiting device of the PCB frame clip bracket according to claim 18, wherein the bracket is moved to a picking end by the conveying chain. The limit device of the PCB frame clip bracket according to claim 19, wherein the device is an oven.