Tool structure of circuit board burning station

Abstract

A tool structure of a circuit board burning station comprises a horizontally-arranged rack, a containing area for bearing a circuit board is arranged on the rack, a probe used for burning the circuit board is arranged on the containing area, a horizontally-arranged pressing rod is arranged above the containing area of the circuit board, and pressing columns are connected to the positions, close to the two ends, of the lower end face of the pressing rod. The driving unit drives the pressing rod to move downwards to the limiting position where the pressing column abuts against the upper plate face of the circuit board or drives the pressing rod to move upwards to the position where the pressing column and the upper plate face of the circuit board are arranged at intervals, the pressing column is in guiding sliding fit with the pressing rod in the rod length direction of the pressing rod, and a locking piece used for locking the relative positions of the pressing rod and the pressing column is further arranged between the pressing rod and the pressing column. The relative positions of the pressing columns on the pressing rods can be reasonably adjusted, so that when the pressing columns abut against circuit boards of different sizes, the board edges of the circuit boards can still be effectively pressed and fixed, and the burning applicability of the circuit boards of different sizes is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit board processing, concretely relates to a kind of tooling structure of circuit board burning station. BACKGROUND

[0002] Vehicle-mounted radar is usually composed of sensor, controller and wire harness, wherein the sensor is installed on the front or tail bumper of the vehicle, and the controller is installed on the vehicle body. The sensor transmits and receives ultrasonic waves, and the signals are transmitted to the controller for operation, so that the driver can master the conditions in front of and behind the vehicle, and avoid collision between the vehicle body and obstacles. Among them, the controller mainly includes a shell and a circuit board. In order to have computing power, the circuit board needs to be programmed during production to record specific programs in the form of digital signals into the chip on the circuit board.

[0003] The patent document with the title "burning jig and burning device" (document number CN112286536A) discloses a technical solution including a base, the base is provided with multiple groups of first burning probes; a carrier plate is elastically supported on the base and has multiple first burning stations and multiple second burning stations, the carrier plate is used for carrying a to-be-burned board; a pressing plate is provided with multiple groups of second burning probes and is connected with multiple first pressing columns and multiple second pressing columns, the multiple first pressing columns are used for rigidly pressing the carrier plate, thereby pressing and holding the carrier plate on the base, and the multiple second pressing columns are used for elastically pressing the to-be-burned board, thereby pressing and holding the to-be-burned board on the carrier plate.

[0004] The patent document with the title "burning tooling" (document number CN115586905A) discloses a technical solution including a tooling box, a cover plate, a pressing device, multiple probes and a circuit board carrier plate, the cover plate is cover-provided on the tooling box; the pressing device is located above the cover plate, and the pressing device can reciprocate up and down; the multiple probes are provided through the cover plate; the circuit board carrier plate is located between the pressing device and the cover plate, and the circuit board carrier plate is used for carrying a to-be-burned circuit board of a corresponding type, and the circuit board carrier plate and the cover plate are detachably connected, so that the circuit board carrier plate can be replaced.

[0005] When burning the circuit board, the circuit board needs to be pressed and held. By arranging pressing columns on the pressing plate or pressing rod, the pressing columns press the circuit board by lifting the pressing plate or pressing rod, so as to ensure the stability of the circuit board during burning. In the prior art, since the middle part of the circuit board is usually arranged with chips and other electronic components, the pressing of the circuit board is usually realized by pressing the edge position of the circuit board with the pressing columns. However, the position of the pressing column on the pressing plate or pressing rod is generally fixed and cannot be adjusted. When burning circuit boards of different sizes, the pressing column cannot press the edge of the board body, but will press other electronic components such as chips, which will cause damage to the electronic components. Therefore, without replacing the tooling, the applicability of the burning structure still needs to be improved. SUMMARY

[0006] The utility model provides a kind of tooling structure of circuit board burning station, the position of pressing column on pressing rod is adjustable, to hold to different sizes of circuit board, guarantee the integrity of circuit board in burning process.

[0007] In order to achieve the above object, the technical scheme is as follows: a kind of tooling structure of circuit board burning station, including flat rack, the placing area of bearing circuit board is provided on rack and the placing area is equipped with probe for circuit board burning, the placing area of circuit board is provided with flat pressing rod above, the lower end surface of pressing rod is connected with pressing column at the position close to both ends, drive unit drives pressing rod to move down to the limit position of pressing column on the upper surface of circuit board or drives pressing rod to move up to the interval arrangement between pressing column and the upper surface of circuit board, pressing column and pressing rod form guiding sliding fit along the length direction of pressing rod, locking member for locking the relative position of both is further provided between pressing rod and pressing column.

[0008] Compared with prior art, the technical effect of the utility model is: by the cooperation of the guiding sliding of pressing column along the length direction of pressing rod, the relative position of pressing column on pressing rod can be reasonably adjusted, so that pressing column can still effectively hold and fix the edge of circuit board when pressing different sizes of circuit board, avoid the interference between pressing column and electronic component on board, thereby optimize the applicability of different sizes of circuit board burning. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the three-dimensional appearance schematic diagram of the utility model;

[0010] Figure 2 It is the state schematic diagram when circuit board is not placed on rack;

[0011] Figure 3 It is Figure 2 Middle part structure schematic diagram;

[0012] Figure 4 It is the lower end surface schematic diagram of pressing rod;

[0013] Figure 5 It is the sectional view of pressing rod structure;

[0014] Figure 6 It is the first embodiment schematic diagram of pressing column;

[0015] Figure 7 It is the second embodiment schematic diagram of pressing column. PREFERRED EMBODIMENT

[0016] The utility model will be further explained in detail as follows in combination with the drawings and related contents: Figures 1-7

[0017] ​The utility model provides a kind of fixture structure of circuit board burning station, including horizontal rack 10, the placing area of bearing circuit board A is provided on rack 10 and the placing area is equipped with probe 20 for burning to circuit board A, the placing area of circuit board A is provided with horizontal press bar 30 above, the lower end surface of press bar 30 is connected with pressing column 31 at the position close to both ends, drive unit 40 drives press bar 30 to descend to the limit position of pressing column 31 and press bar 30 or drive press bar 30 to ascend to the interval arrangement between pressing column 31 and the upper board surface of circuit board A, pressing column 31 is guided and slidably cooperated between the bar length direction of press bar 30, locking member 32 for locking the relative position between press bar 30 and pressing column 31 is further provided.

[0018] In the above scheme, when the program of circuit board A is burned, circuit board A is placed in the specific placing area on rack 10, and probe 20 naturally abuts against the burning point on circuit board A. When drive unit 40 drives press bar 30 to descend to the limit position of pressing column 31 and press against the upper board surface of circuit board A, circuit board A is effectively fixed under the pressing action of pressing column 31, so as to ensure the stability of circuit board A in the burning process. After the burning operation is completed, drive unit 40 drives press bar 30 to ascend to the interval arrangement between pressing column 31 and the upper board surface of circuit board A, and pressing column 31 is automatically separated from circuit board A, so as to cancel the pressing of circuit board A, and circuit board A can be taken off from rack 10.

[0019] When circuit board A of different sizes is burned, since pressing column 31 is guided and slidably cooperated with press bar 30 in the bar length direction of press bar 30, the relative position of pressing column 31 on press bar 30 can be adjusted, so that pressing column 31 is aligned with the to-be-pressed board edge area of circuit board A placed on rack 10. After adjustment, locking member 32 is used to lock the position between pressing column 31 and press bar 30, so as to ensure the stability of the position of pressing column 31 on press bar 30. In this way, the present application can adaptively adjust pressing column 31 according to the board width (or board length) of circuit board A, so that pressing column 31 accurately presses the board edge of circuit board A, and is suitable for circuit board A of different sizes to burn the program.

[0020] As a preferred scheme, locking member 32 is a bolt, the upper end surface of press bar 30 is provided with a strip-shaped hole 301 penetrating through the shaft of press bar 30 from top to bottom, the long diameter direction of strip-shaped hole 301 is arranged along the bar length direction of press bar 30, the bolt passes through strip-shaped hole 301, and the lower end of the bolt is connected into connecting hole 311 on pressing column 31 and forms threaded cooperation, the bolt head 321 on the upper end of the bolt is pressed on the upper end surface of press bar 30, and the top surface 312 of pressing column 31 is pressed on the hole along the short diameter direction of strip-shaped hole 301.

[0021] When the position of the pressing column 31 needs to be adjusted, the bolt serving as the locking member 32 can be rotated to be screwed out of the connecting hole 311 on the pressing column 31, so that the pre-tightening force of the bolt head 321 on the top surface 312 of the pressing column 31 on the upper and lower end surfaces of the pressing rod 30 is cancelled, the bolt can be slid along the long diameter direction of the strip-shaped hole 301 to adjust the relative position of the pressing column 31 on the pressing rod 30. After the adjustment is completed, the bolt is tightened again, so that the bolt head 321 is pre-tightened on the top surface 312 of the pressing column 31 on the upper and lower end surfaces of the pressing rod 30, that is, the position locking of the pressing column 31 is completed.

[0022] It should be noted that, in order to avoid the situation that the pressing column 31 cannot be locked or unlocked when the bolt is rotated, the bolt needs to be rotated again while maintaining the posture of the pressing column 31.

[0023] Further, two strip-shaped holes 301 are arranged on the pressing rod 30 along the length direction of the rod, the connecting arm 50 is connected to the rod body of the pressing rod 30 between the two strip-shaped holes 301, the arm body of the connecting arm 50 is located in the horizontal direction perpendicular to the rod body of the pressing rod 30, and the driving unit 40 is connected to the pressing rod 30 through the connecting arm 50. The connecting arm 50 serves as a transition connecting member between the driving unit 40 and the pressing rod 30, is connected to the solid rod body of the pressing rod 30 between the two strip-shaped holes 301, and can be fixed and connected to the pressing rod 30 by using a pin or a bolt.

[0024] As a preferred solution, the pressing column 31 is wedge-shaped as a whole with a large upper end and a small lower end, and the lower end surface 313 of the pressing column 31 is long strip-shaped and arranged in parallel with the board edge of the circuit board A opposite to the placement area. Through the wedge-shaped design of the pressing column 31, the area of the lower end surface 313 is reduced while ensuring that the size of the top surface 312 meets the connection requirements, so that the bottom of the pressing column 31 can avoid the electronic components on the circuit board A as much as possible, and the situation that the electronic components on the board are damaged due to extrusion interference is avoided. At the same time, the long strip-shaped lower end surface 313 has a longer span interval at the corresponding contact position on the circuit board A than the circular end surface, so as to ensure the stable pressing effect on the whole circuit board A.

[0025] Further, in order to avoid the situation that the pressing column 31 and the bolt are rotated synchronously when the bolt serving as the locking member 32 is rotated, the position of the pressing column 31 needs to be limited, the present application provides the following two limiting methods:

[0026] One is to combine the bolt with a limiting member 33. Figure 4 The other is to use a limiting member 33 to limit the rotation of the bolt. Figure 6As shown, the lower end surface of the pressing rod 30 is provided with a limiting strip 33 arranged along the length direction of the rod, and the side of the pressing column 31 close to the limiting strip 33 is provided with a vertical plane 314, which is arranged in parallel with the limiting strip 33 and forms a resistance sliding fit therebetween. By the plane 314 on the pressing column 31 resisting the limiting strip 33 arranged in parallel therewith, when the bolt is rotated, the plane 314 on the pressing column 31 is blocked by the limiting strip 33 so that the pressing column 31 cannot be rotated, thereby facilitating the locking and unlocking of the pressing column 31. It should be noted that the limiting strip 33 needs to be protruded downward from the lower end surface of the pressing rod 31 by a certain distance to avoid excessive rotation of the bolt during the unlocking process, which causes the plane 314 on the pressing column 31 to completely separate from the limiting strip 33.

[0027] Secondly, as shown in Figure 7 the top surface 312 of the pressing column 31 is connected with a limiting block 315 protruding upward and the limiting block 315 is inserted into the corresponding strip-shaped hole 301, and the opposite side of the limiting block 315 in the short diameter direction of the strip-shaped hole 301 is arranged in abutment with the hole wall of the strip-shaped hole 301 to form a limiting fit for limiting the circumferential rotation of the limiting block 315. By inserting the limiting block 315 into the strip-shaped hole 301, the circumferential rotation of the limiting block 315 is limited by the hole wall of the strip-shaped hole 301, thereby avoiding the synchronous rotation of the pressing column 31 with the bolt when the bolt is rotated. As described in the previous embodiment, in this scheme, the limiting block 315 also needs to have a certain protruding height to avoid excessive rotation of the bolt during the unlocking process, which causes the limiting block 315 to completely separate from the strip-shaped hole 301.

[0028] In addition, as shown in Figure 1 and Figure 2 In order to facilitate the positioning of the circuit board A on the rack 10, at least two positioning pins 11 are arranged horizontally and spaced apart in the placement area of the rack 10 carrying the circuit board A, and when the circuit board A is located in the placement area, the positioning pins 11 are inserted into the corresponding positioning holes A1 on the circuit board A, thereby ensuring that the horizontal position of the circuit board A on the rack 10 is stable and will not shift or deflect.

[0029] Further, the placement area of the rack 10 carrying the circuit board A is provided with support columns 12 supporting the circuit board A, the number of support columns 12 is at least three and they are connected to each other to form a polygon, and the upper end surfaces of the support columns 12 are arranged in a common plane. The support columns 12 cooperate with each other, and the upper end surfaces thereof form a stable support surface for supporting the lower surface of the circuit board A. In this way, when the pressing column 31 presses the upper surface of the circuit board A, the support columns 12 not only provide support effect, but also elevate the lower surface of the circuit board A, so that the electronic components or solder joints arranged on the lower surface are not directly pressed against the rack 10, thereby avoiding the damage of the electronic components on the lower surface of the circuit board A due to excessive pressure.

Claims

1. A tool structure of a circuit board burning station, comprising a horizontal rack (10), a placing area for bearing a circuit board (A) is arranged on the rack (10), and a probe (20) for burning the circuit board (A) is arranged on the placing area, a horizontal pressing rod (30) is arranged above the placing area of the circuit board (A), a pressing column (31) is connected to the lower end face of the pressing rod (30) near the two ends, a driving unit (40) drives the pressing rod (30) to move downward to the limiting position where the pressing column (31) presses the upper board surface of the circuit board (A) or drives the pressing rod (30) to move upward to the position where the pressing column (31) is arranged to be spaced from the upper board surface of the circuit board (A), characterized in that: The pressing column (31) is in sliding fit with the pressing rod (30) along the length direction of the pressing rod (30), and a locking member (32) is arranged between the pressing rod (30) and the pressing column (31) for locking the relative position of the two.

2. The tooling structure of a circuit board burning station according to claim 1, wherein: The locking member (32) is a bolt, the upper end surface of the pressing rod (30) is provided with a strip-shaped hole (301) penetrating through the rod body from top to bottom, the long diameter direction of the strip-shaped hole (301) is arranged along the length direction of the pressing rod (30), the bolt passes through the strip-shaped hole (301), the lower end of the bolt is connected into a connecting hole (311) on the pressing column (31) and forms a threaded fit, the bolt head (321) of the upper end of the bolt is pressed on the upper end surface of the pressing rod (30), and the top surface (312) of the pressing column (31) is pressed on the hole along the short diameter direction of the strip-shaped hole (301).

3. The tooling structure of a circuit board burning station according to claim 2, wherein: Two strip-shaped holes (301) are arranged on the pressing rod (30) along the length direction of the pressing rod (30), the connecting arm (50) is connected to the rod body of the pressing rod (30) between the two strip-shaped holes (301), the arm body of the connecting arm (50) is arranged in a horizontal direction perpendicular to the rod body of the pressing rod (30), and the driving unit (40) is connected to the pressing rod (30) through the connecting arm (50).

4. The tooling structure of a circuit board burning station according to claim 1 or 2 or 3, characterized in that: The pressing column (31) is in the form of a wedge with a large upper end and a small lower end, the lower end surface (313) of the pressing column (31) is in the form of a long strip and is arranged in parallel with the plate edge of the circuit board (A) opposite the placement area.

5. The tooling structure of a circuit board burning station according to claim 4, wherein: The lower end surface of the pressing rod (30) is provided with a limiting strip (33) arranged along the length direction, one side of the pressing column (31) near the limiting strip (33) is provided with an upright plane (314), the plane (314) is arranged in parallel with the limiting strip (33) and forms a sliding fit in abutment therebetween.

6. The tooling structure of a circuit board burning station according to claim 4, wherein: The top surface (312) of the pressing column (31) is connected with a limiting block (315) protruding upward and the limiting block (315) is inserted into the corresponding strip-shaped hole (301), the opposite side of the limiting block (315) in the short diameter direction of the strip-shaped hole (301) is arranged in abutment with the hole wall of the strip-shaped hole (301) to form a limiting fit for limiting the circumferential rotation of the limiting block (315).

7. The tooling structure of a circuit board burning station according to claim 1, wherein: At least two positioning pins (11) are arranged in the placement area of the rack (10) for carrying the circuit board (A) in horizontal intervals, and the positioning pins (11) are inserted into the corresponding positioning holes (A1) on the circuit board (A) when the circuit board (A) is located in the placement area.

8. The tool structure of a circuit board burning station according to claim 1 or 7, characterized in that: The placement area of the rack (10) for carrying the circuit board (A) is provided with support columns (12) for supporting the circuit board (A), the number of the support columns (12) is at least three and the support columns (12) are connected to each other to form a polygon, and the upper end surfaces of the support columns (12) are arranged in a plane.

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