CN112536500A

CN112536500A - Supporting frame

Info

Publication number: CN112536500A
Application number: CN201910900096.XA
Authority: CN
Inventors: 庄明伦
Original assignee: Giga Byte Technology Co Ltd
Current assignee: Giga Byte Technology Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-03-23

Abstract

A supporting frame comprises a rod body, at least one elastic thimble, at least one clamping sheet, a resetting piece and at least one jacking piece. The rod body extends along a long axis direction, and the elastic thimble is arranged in the rod body and is vertical to the long axis direction. The elastic thimble telescopically protrudes out of the rod body, at least a part of the elastic thimble protruding out of the rod body is provided with a slip-resistant line, the clamping piece is movably arranged on the rod body and is used for clamping the slip-resistant line of the elastic thimble, the reset piece is used for normally driving the clamping piece to move towards the elastic thimble, and the jacking piece is provided with a body and a linear driving device which is connected with the body and the rod body so as to drive the rod body to move along the direction vertical to the long axis direction.

Description

Supporting frame

Technical Field

The present invention relates to a peripheral device of a welding table, and more particularly to a support frame for mounting on a welding table.

Background

A Ball Grid Array (Ball Grid Array) bonding machine or a general bonding platform provides a bonding stage for placing a circuit substrate to be processed.

The soldering station is usually supported on two opposite sides of the circuit board by two parallel side walls, so that the protruding structures (electronic components or soldering pins) on the bottom can be suspended to ensure that the circuit board can be horizontally arranged.

The upper surface of the circuit board is pressed by the heating tool regardless of whether the circuit board is subjected to soldering or desoldering. This pressure will cause the depression to bend, affecting the performance of the welding or desoldering operation. Meanwhile, the bending of the circuit substrate may cause displacement of the welding point, empty welding or short circuit, and even cause the circuit to be torn apart, which may result in the failure of the circuit substrate. Meanwhile, since the circuit substrate is heated during the soldering or the desoldering process, the circuit substrate may be softened or deformed, and if the circuit substrate is bent seriously, the effect of recovering to a completely flat state is limited even if the circuit substrate is pressed and baked.

Therefore, a support frame is arranged on the welding workbench and is placed below the circuit substrate. The support frame is provided with a plurality of flat head screws. After the flat head screw is rotated and adjusted to protrude out of the height of the support frame, the flat head screw can be supported on the part without parts or pins below the circuit substrate through the screw, so that the circuit substrate is prevented from being bent and deformed after being stressed.

However, in the adjustment process of the supporting frame, the circuit substrate needs to be repeatedly lifted and aligned and the screw needs to be adjusted in a rotating manner. Each screw must be individually rotated to adjust the height, so that the operation is slow and time and effort are consumed if the operation is applied to a large substrate.

Disclosure of Invention

In view of the above problems, the present invention provides a supporting frame, which includes a rod, at least one elastic pin, at least one locking piece, a restoring piece, and at least one lifting piece. The rod body extends along a long axis direction. The elastic thimble is arranged in the rod body and is vertical to the long axis direction. The elastic thimble is telescopically protruded out of the rod body, and at least the part of the elastic thimble protruded out of the rod body is provided with a slip-resistant texture. The clamping piece is movably arranged on the rod body and is used for clamping the anti-slip lines of the elastic thimble. The reset piece is used for normally driving the clamping and pulling piece to move towards the elastic thimble. The lifting member has a body and a linear driving device connected to the body and the rod to drive the rod to move along a direction perpendicular to the long axis.

In at least one embodiment, the rod body is provided with an accommodating hole for accommodating the elastic thimble, and an axial direction of the accommodating hole is perpendicular to the long axis direction.

In at least one embodiment, the elastic thimble includes a cylinder and a compression spring, the cylinder and the compression spring are disposed in the containing hole, and the compression spring is used for pushing the cylinder to protrude out of an opening of the containing hole.

In at least one embodiment, the post has a flange, and the opening of the receiving hole extends inward to form a stop portion for stopping the flange.

In at least one embodiment, the post is a screw, the flange is a head of the screw, and the anti-slip texture is a thread of the screw.

In at least one embodiment, the accommodating hole penetrates through the rod body along a direction perpendicular to the long axis direction, and one bottom of the accommodating hole is sealed by an end plug; one end of the compression spring is abutted against the end plug, and the other end of the compression spring is abutted against the cylinder.

In at least one embodiment, the end plug is a screw.

In at least one embodiment, the end plug is fixed at the bottom of the accommodating hole in a tight fit mode.

In at least one embodiment, the support frame further includes a sliding frame slidably disposed on the rod body, and the locking piece is disposed on the sliding frame.

In at least one embodiment, the sliding frame includes a first sliding portion and a second sliding portion slidably coupled to the rod, the rod is disposed between the first sliding portion and the second sliding portion, and the locking piece spans the rod and is connected to the first sliding portion and the second sliding portion.

In at least one embodiment, the sliding frame includes a horizontal portion disposed across the rod body and connecting the first sliding portion and the second sliding portion.

In at least one embodiment, the restoring member is a spring, one end of which is connected to the rod body and the other end of which is connected to the sliding frame.

In at least one embodiment, the reset element includes a first magnetic element and a second magnetic element respectively disposed on the rod and the sliding frame, and the first magnetic element and the second magnetic element are magnetically repulsive or magnetically attractive to push the sliding frame to move on the rod.

In at least one embodiment, the support frame further comprises a horizontal gauge disposed on the rod or the sliding frame.

In at least one embodiment, the linear driving device includes a gear, a rack and a guiding frame, the gear is pivoted to the guiding frame, the rack is connected to the rod, and the guiding frame is disposed on the body for guiding the rack.

In at least one embodiment, the gear is connected to a coaxially disposed hand wheel.

In at least one embodiment, the supporting frame has two lifting members respectively disposed at two ends of the rod body or close to the two ends of the rod body.

When the support frame of the invention supports the circuit board, the circuit board is only required to be placed on the two side walls of the welding platform, and the elastic thimble is kept in a release state, so that the circuit board can compress the elastic thimble to a height which can be just supported, and then the elastic thimble is fixed by the clamping sheet, so that the height of the elastic thimble can be kept. Therefore, when the circuit board is installed, the operation of repeatedly adjusting the supporting height is omitted, and the welding operation can be faster.

Drawings

Fig. 1 is an exploded perspective view of a first embodiment of the present invention.

Fig. 2 is a perspective view of a first embodiment of the present invention.

Fig. 3 is a partial cross-sectional view of a first embodiment of the invention.

Fig. 4 is another partial cross-sectional view of the first embodiment of the present invention.

Fig. 5 and 6 are partial plan views of the first embodiment of the present invention.

Fig. 7 is a perspective view of a partial element of the first embodiment of the present invention.

Fig. 8, 9, and 10 are front views of application examples of the present invention.

Fig. 11 and 12 are partial plan views of the second embodiment of the present invention.

Fig. 13 is a perspective view of a modification of the present invention.

Fig. 14 and 15 are partial plan views of modified examples of the present invention.

Fig. 16, 17 and 18 are partial plan views of another modification of the present invention.

The reference numbers are as follows:

100 support frame

110 rod body

112 containing hole

116 end plug

112a opening

112b stop part

114 guide rail

120 elastic thimble

120a anti-slip pattern

122 column

122a flange

124 compression spring

130 sliding rack

131 first sliding part

131a guide groove

132 second sliding part

132a guide groove

133 horizontal part

140 clamping piece

150 reset piece

151 first magnetic member

152 second magnetic member

160 jacking member

162 body

163 fixing element

164 linear drive

164a Gear

164b rack

164c guide frame

164e hand wheel

180 level gauge

190 shifting block

200 welding bench

210 work bench

220 side wall

300 circuit board

Detailed Description

Referring to fig. 1, fig. 2, fig. 3 and fig. 8, a supporting frame 100 according to a first embodiment of the present invention is configured to be disposed on a soldering stage 200 to be supported on a bottom of a circuit board 300 for performing a desoldering or soldering operation on an electronic component on the circuit board 300.

As shown in fig. 1, 2 and 3, the supporting frame 100 includes a rod 110, one or more resilient pins 120, a sliding frame 130, one or more locking pieces 140, a restoring member 150 and two lifting members 160.

As shown in fig. 1, 2 and 3, the shaft 110 extends along a long axis. The cross-sectional shape of the shaft 110 may be any shape, and is not limited to the rectangular shape shown in the figure. The rod body 110 is provided with a plurality of accommodating holes 112 corresponding to the number of the elastic pins 120 for accommodating the elastic pins 120, openings 112a of the plurality of accommodating holes 112 face the same direction, and the axial direction of the accommodating holes 112 is perpendicular to the long axis direction.

As shown in fig. 1, 2 and 3, the elastic thimble 120 is disposed in the accommodating hole 112 and protrudes outward through the opening 112a of the accommodating hole 112. Therefore, the elastic needle 120 is disposed in the rod 110 and perpendicular to the long axis direction. The resilient pin 120 includes a cylinder 122 and a compression spring 124 disposed in the receiving hole 112. The receiving hole 112 penetrates through the rod 110 along a direction perpendicular to the long axis direction, and a bottom of the receiving hole 112 is closed by an end plug 116. One end of the compression spring 124 abuts against the end plug 116, and the other end abuts against the cylinder 122, the compression spring 124 pushes the cylinder 122 to protrude out of the opening 112a of the receiving hole 112, so that the elastic thimble 120 can protrude out of the rod 110 in a retractable manner. Meanwhile, the elastic thimble 120 is provided with a non-slip texture 120a at least on the portion protruding from the rod body 110.

The end plug 116 is screwed to the bottom of the receiving hole 112, for example, the end plug 116 is a screw, especially a headless screw; the end plug 116 may also be fixed to the bottom of the receiving hole 112 in a tight fit manner, for example, the end plug 116 is an elastic body and has a diameter before being pressed larger than the diameter of the receiving hole 112.

As shown in fig. 3, the cylinder 122 has a flange 122a, and the opening 112a of the receiving hole 112 extends inward to form a stop portion 112b for stopping the flange 122 a. Therefore, under the urging of the compression spring 124, the post 122 only partially protrudes from the rod body 110 through the opening 112a, and cannot be removed from the accommodating hole 112. In one embodiment, the post 122 is a screw, the flange 122a is a head of the screw, and the anti-slip feature 120a is a thread of the screw.

As shown in fig. 1, 2 and 4, the sliding frame 130 is slidably disposed on the rod 110, and the locking piece 140 is disposed on the sliding frame 130, such that the locking piece 140 is movably disposed on the rod 110 for locking the anti-slip pattern 120a of the elastic thimble 120. In one embodiment, the sliding frame 130 includes a first sliding portion 131, a second sliding portion 132 and a horizontal portion 133, the horizontal portion 133 can be used to connect the first sliding portion 131 and the second sliding portion 132, and the rod 110 is disposed between the first sliding portion 131 and the second sliding portion 132. The first sliding portion 131 and the second sliding portion 132 can be slidably coupled to the rod 110 by matching the guide rail 114 with the

guide grooves

131a,132 a. The locking piece 140 crosses over the rod 110 and is connected to the first sliding portion 131 and the second sliding portion 132, and can move towards the portion of the elastic thimble 120 protruding from the rod 110.

As shown in fig. 1, 2 and 3, the restoring element 150 is used for pushing the latch 140 to move toward the resilient thimble 120. Specifically, the reset element 150 is connected to the rod 110 and the sliding frame 130, and pushes the sliding frame 130 to move on the rod 110, thereby indirectly pushing the latch 140 to move toward the resilient pin 120. However, the present invention does not exclude the locking piece 140 directly slidably coupled to the rod 110 by a sliding structure such as the guide rail 114/guide groove.

As shown in fig. 5 and 6, in the first embodiment, the reset element 150 is a spring, one end of which is connected to the rod 110 and the other end of which is connected to the sliding rack 130, and pushes the sliding rack 130 to move toward the direction of the elastic needle 120.

As shown in fig. 5 and 6, the spring may be a compression spring or an extension spring, and the position of the reset element 150 depends on the direction of the elastic force of the spring and the relative positions of the latch 140 and the elastic pin 120.

As shown in fig. 1, 2 and 7, two raising members 160 are disposed at two ends of the rod 110, or near two ends of the rod 110.

As shown in fig. 7 and 8, each of the lifting members 160 has a body 162 and a linear driving device 164. The linear driving device 164 is connected to the body 162 and the rod 110 to drive the rod 110 to move along a direction perpendicular to the long axis. The body 162 may be disposed on the welding worktable 200 to quickly fix the supporting stand 100 at a predetermined position on the welding worktable 200.

As shown in fig. 7 and 8, the linear driving device 164 includes a gear 164a, a rack 164b and a guiding frame 164 c. The gear 164a is engaged with the rack 164b, the gear 164a is pivoted to the guiding frame 164c, and the rack 164b is connected to the rod 110. The guiding frame 164c is disposed on the body 162 and used for guiding the rack 164b to guide the rod 110 to move along a direction perpendicular to the long axis direction. The gear 164a rotates to drive the rod 110 to rise and fall to match the height of the circuit board 300 on different welding stations 200. One embodiment of the guide frame 164c is a guide channel for the rack 164b to slide along a straight line. The gear 164a is further connected to a coaxially disposed hand wheel 164e, and the hand wheel 164e is used for being operated and rotated by a user to rotate the gear 164 a.

As shown in fig. 8 and 9, a specific application of the supporting stand 100 according to the first embodiment of the present invention is shown. The support frame 100 is placed on the working table 210 of the welding workbench 200; the bottom of the body 162 includes a fixing element 163. In the embodiment, the fixing element 163 is a magnet, and the fixing element 163 can be attracted to the work bench 210 by the magnetic force of the fixing element 163, so that the supporting frame 100 can be stably fixed on the work bench 210, but can be quickly removed. Of course, in the embodiment, the fixing element 163 may also be replaced by a suction cup, a velcro tape, a sticky buckle tape, or a repeatedly adhesive material, so as to fix the supporting frame 100 on the working platform 210. In addition, when the fixing element 163 is a magnet, it can be embedded in the body 162, or can be attached to the bottom of the body 162, which is not limited herein.

As shown in fig. 8 and 9, the supporting frame 100 is located between the two side walls 220, and the elastic pins 120 protrude upward. At this time, the sliding frame 130 is forced to move, so that the locking piece 140 is temporarily separated from the elastic thimble 120, and the circuit board 300 is placed from above, so that two opposite sides of the circuit board 300 are abutted against the side wall 220, and the bottom surface of the circuit board 300 presses the elastic thimble 120 downwards, so that the elastic thimble 120 is retracted to just contact the circuit board 300. To enhance the fixing, the circuit board may be fixed to the side wall 220 by fixing members (e.g., screws) passing through the fixing holes of the circuit board and fixed to the side wall 220. Then, the carriage 130 is released. As shown in fig. 5 or fig. 6, the reset element 150 will push the sliding rack 130 to move toward the elastic thimble 120 again, so that the locking piece 140 is locked on the anti-slip pattern 120a of the elastic thimble 120, thereby fixing the protruding height of the elastic thimble 120. The elastic thimble 120 can quickly complete the height adjustment of the supporting frame 100 by directly pressing the circuit board 300 to be soldered and then fixing the protruding height by the latch piece 140.

As shown in fig. 7 and 10, when the height of the sidewall 220 is changed by changing different welding stations 200, the rod 110 can move up and down by rotating the operation portion of the linear driving device 164 and the rotating gear 164a, so that the height of the top edge of the sidewall 220 can be within the range of the flexible thimble 120.

Fig. 11 and fig. 12 are partial top views of a supporting frame 100 according to a second embodiment of the present invention. In the second embodiment, the reset element 150 includes a first magnetic element 151 and a second magnetic element 152. The first magnetic member 151 is disposed on the rod 110, the second magnetic member 152 is disposed on the sliding frame 130, and the first magnetic member 151 and the second magnetic member 152 are magnetically repulsive or attractive to push the sliding frame 130 to move on the rod 110, thereby indirectly pushing the latch sheet 140 to move toward the elastic thimble 120.

As shown in fig. 11 and 12, the first magnetic element 151 is disposed on the rod 110. The sliding frame 130 includes a horizontal portion 133 disposed across the stick body 110. The horizontal portion 133 may be used to connect the first sliding portion 131 and the second sliding portion 132. The second magnetic member 152 may be disposed on the horizontal portion 133.

As shown in fig. 11, the latch 140 is located between the resilient thimble 120 and the first magnetic member 151. At this time, the first magnetic element 151 and the second magnetic element 152 are magnetically attracted to each other, and the locking piece 140 is pushed inward to be locked on one side of the resilient thimble 120, so as to be locked on the resilient thimble 120. Therefore, when a circuit board is to be placed, the sliding rack 130 is pulled outward first, and the locking piece 140 is driven to separate from the elastic thimble 120; when the circuit board is placed and the flexible pin 120 is extended to a suitable length, the sliding frame 130 is released to drive the locking piece 140 to move toward the flexible pin 120 again, and the locking piece is locked on the flexible pin 120

As shown in fig. 12, if the elastic thimble 120 is disposed between the latch piece 140 and the first magnetic member 151, the first magnetic member 151 and the second magnetic member 152 are magnetically repulsive, and the carriage 130 is normally pushed to drive the latch piece 140 to move toward the elastic thimble 120, and at this time, the latch piece 140 is pushed outward to be latched on the other side of the elastic thimble 120. When a circuit board is to be placed, the sliding rack 130 is pushed inward to drive the locking piece 140 to separate from the elastic thimble 120; when the circuit board is placed and the flexible pin 120 is extended to a suitable length, the sliding frame 130 is released, so that the sliding frame 130 drives the locking piece 140 to move towards the flexible pin 120 again, and the locking piece is locked on the flexible pin 120.

As shown in fig. 13, 14 and 15, the support stand 100 of the above embodiments may further include a horizontal gauge 180 disposed on the rod 110 or the sliding rack 130. The horizontal gauge 180 on the sliding frame 130 may be located on the first sliding portion 131, the second sliding portion 132, or the horizontal portion 133. The horizontal gauge 180 can be used to display the horizontal state of the supporting stand 100, so that the user can adjust the two lifting members 160 to keep the stick body 110 in the horizontal state.

As shown in fig. 16, 17 and 18, the support frame 100 of the above embodiments may further include one or more shifting blocks 190 disposed on the rod 110 or the sliding frame 130. The shifting block 190 facilitates the user to apply force to operate the sliding rack 130 to move, so as to easily disengage the catch piece 140 from the resilient thimble 120 or move towards the resilient thimble 120.

As shown in fig. 16, the supporting frame 100 may include a plurality of shifting blocks 190, which are disposed on the rod 110 and the sliding frame 130, and the plurality of shifting blocks 190 on the sliding frame 130 may be disposed on the first sliding portion 131 and the second sliding portion 132, respectively, or the horizontal portion 133 may be further disposed with the shifting blocks 190; alternatively, the dial 190 may be provided only in one of the first sliding portion 131, the second sliding portion 132, and the horizontal portion 133. Therefore, when pushing the sliding rack 130, the user can easily press and push the thumb block 190 with fingers, and at the same time, apply force to the rod 110 and the sliding rack 130, so that the sliding rack 130 moves relative to the rod 110.

As shown in fig. 17, the plurality of shift blocks 190 may be provided only on the carriage 130, and the shift blocks 190 may be provided on the first sliding portion 131, the second sliding portion 132, and the horizontal portion 133, respectively; alternatively, the dial 190 may be provided only in one of the first sliding portion 131, the second sliding portion 132, and the horizontal portion 133. Since the rod 110 can be fixed by the raising member 160, the user can press and push the toggle block 190 with his/her finger to apply force to the sliding frame 130, so as to operate the sliding frame 130 to move relative to the rod 110.

As shown in fig. 18, the dial 190 may be provided only on the lever body 110. Since the first sliding portion 131, the second sliding portion 132 and the horizontal portion 133 are relatively easy for the user to grasp, the user can apply a force to the rod 110 through the thumb block 190 to facilitate the movement of the operation sliding frame 130 relative to the rod 110.

Claims

1. A support frame, comprising:

a rod body extending along a long axis direction;

at least one elastic thimble arranged in the rod body and vertical to the long axis direction; the elastic thimble is telescopically extruded out of the rod body, and at least the part of the elastic thimble extruded out of the rod body is provided with a slip-resistant line;

at least one clamping sheet movably arranged on the rod body and used for clamping the anti-slip lines of the elastic thimble;

a reset piece for normally driving the clamping and pulling piece to move towards the elastic thimble; and

at least one lifting piece is provided with a body and a linear driving device, and the linear driving device is connected with the body and the rod body so as to drive the rod body to move along the direction vertical to the long axis direction.

2. The support bracket as claimed in claim 1, wherein the rod body is provided with a receiving hole for receiving the resilient thimble, and an axial direction of the receiving hole is perpendicular to the long axis direction.

3. The support bracket of claim 2 wherein the resilient pin comprises a post and a compression spring, the post and the compression spring being disposed in the receiving hole, and the compression spring being configured to urge the post to protrude out of an opening of the receiving hole.

4. The support bracket of claim 3 wherein the post has a flange and the opening of the receiving hole extends inwardly to form a stop for stopping the flange.

5. The support of claim 4, wherein the post is a screw, the flange is a head of the screw, and the anti-slip feature is a thread of the screw.

6. The support as claimed in claim 4, wherein the receiving hole extends through the rod body in a direction perpendicular to the long axis, and a bottom of the receiving hole is closed by an end plug; one end of the compression spring is abutted against the end plug, and the other end of the compression spring is abutted against the column body.

7. A support as claimed in claim 6, wherein the end plug is a screw.

8. A support as claimed in claim 6, wherein the end plug is secured to the base of the receiving bore with a close fit.

9. The support of claim 1, further comprising a sliding bracket slidably disposed on the rod, wherein the locking tab is disposed on the sliding bracket.

10. The support of claim 9, wherein the carriage comprises a first sliding portion and a second sliding portion slidably coupled to the rod, the rod is disposed between the first sliding portion and the second sliding portion, and the latch is connected to the first sliding portion and the second sliding portion across the rod.

11. The support of claim 10, wherein the carriage includes a horizontal portion disposed across the bar connecting the first sliding portion and the second sliding portion.

12. The support of claim 9, wherein the return member is a spring having one end connected to the bar and the other end connected to the carriage.

13. The support of claim 9, wherein the restoring member comprises a first magnetic member and a second magnetic member respectively disposed on the rod and the sliding rack, and the first magnetic member and the second magnetic member are magnetically repulsive or magnetically attractive to push the sliding rack to move on the rod.

14. The support of claim 9, further comprising a horizontal gauge disposed on the mast or the carriage.

15. The support frame of claim 1, wherein the linear driving device comprises a gear, a rack and a guiding frame, the gear is pivotally mounted on the guiding frame, the rack is connected to the rod, and the guiding frame is mounted on the body for guiding the rack.

16. The support of claim 15 wherein the gear is connected to a coaxially disposed hand wheel.

17. The support of claim 1, wherein the support has two raising members respectively disposed at or near two ends of the rod.