Circuit board test fixture clamping structure

Abstract

The utility model discloses a circuit board test fixture clamping structure, comprising a workbench provided with four guide grooves, two of which are located at the left half part of the workbench and are distributed in a V shape, the other two of which are located at the right half part of the workbench and are also distributed in a V shape, and the closer to the center of the workbench, the closer to the center of the workbench, the other two guide grooves are distributed in a V shape. The smaller the distance between the two guide grooves of the left half part is, the smaller the distance between the two guide grooves of the right half part is; the four clamping plates are arranged above the workbench and are respectively matched with the four guide grooves; the driving assembly is used for driving the clamping plates to synchronously move in the direction close to or away from the center of the workbench along the guide grooves. According to the utility model, when the driving assembly works, the four clamping plates can be driven to move along the guide grooves in the direction close to or away from the center of the workbench, so that the four clamping plates can synchronously contract or expand in the radial direction, and the distance between the two clamping plates on the same side can be changed; therefore, the utility model can be suitable for circuit boards with various dimensions.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board test technical field especially relates to a circuit board test fixture clamping structure. BACKGROUND

[0002] Circuit board needs to carry out a series of circuit detection in the production process, through the running situation of contact detection circuit and welding spot, need through the fixture to clamp and fix the circuit board in the detection process, then through the automatic detection equipment to the circuit board detection.

[0003] The universality of the existing test fixture clamping structure is poor, usually only applicable to single size specification circuit board. Therefore in the actual use process, after a batch of circuit board test, when testing the next batch of circuit board, if the size specification of circuit board has changed, then need to replace or adjust the fixture, make it with the size of the next batch of circuit board match, can continue testing. For this, the applicant thinks that it is necessary to improve the structure of the test fixture, improve its universality, make it applicable to more size specification circuit board. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that provides a circuit board test fixture clamping structure to improve the universality of test fixture, make it applicable to more size specification circuit board.

[0005] The utility model solves the technical problem that adopts the technical scheme that provides a circuit board test fixture clamping structure, it includes:

[0006] Workbench, be provided with four guide slots on the workbench, two guide slots are located in the left half department of the workbench and show V shape distribution, and the other two guide slots are located in the right half department of the workbench and also show V shape distribution, and, the closer to the center of the workbench, the smaller the interval of the two guide slots of left half department, the smaller the interval of the two guide slots of right half department also,

[0007] Clamping plate, the number of clamping plate is four, four clamping plate is distributed in the top of the workbench and is matched in four guide slots setting respectively,

[0008] First sliding sleeve, the number of first sliding sleeve is also four, four first sliding sleeve is located in the below of the workbench and is connected with four clamping plate corresponding respectively,

[0009] First guide rod, the number of first guide rod is also four, four first guide rod is parallel to four guide slots and is arranged in the directly below of guide slot respectively, and four first sliding sleeve is respectively sliding sleeve joint on four first guide rod,

[0010] Second sliding sleeve, the number of which is also four, four said second sliding sleeve is fixedly connected to the bottom of four said first sliding sleeve;

[0011] Second guide rod, the number of which is two and one left and right parallel arrangement below said workbench; Wherein, the two second sliding sleeve of the left half of the workbench is slidingly connected to the left second guide rod, and the two second sliding sleeve of the right half of the workbench is slidingly connected to the right second guide rod; And, the two first guide rod and the second guide rod below the left half of the workbench constitute an isosceles triangle in the projection plane parallel to the workbench, and the two first guide rod and the second guide rod below the right half of the workbench also constitute an isosceles triangle in the projection plane parallel to the workbench;

[0012] Driving assembly, said driving assembly is used for driving two said second guide rod moves towards or moves away from.

[0013] Preferably, the first sliding sleeve is connected with the corresponding clamping plate through a connecting neck plate, the connecting neck plate passes through the corresponding guide groove from bottom to top, and there is a gap between the outer wall of the connecting neck plate and the inner wall of the guide groove.

[0014] Preferably, the connecting neck plate is provided with a roller on both sides, so as to facilitate the sliding of the connecting neck plate along the corresponding guide groove.

[0015] Preferably, the inner end of the four first guide rods is fixed on a adapter, and the adapter is fixedly installed on the bottom of the center of the workbench.

[0016] Preferably, the driving assembly comprises a first screw, a first nut, a second screw, a second nut and a motor.

[0017] The first screw and the second screw are coaxially connected through a shaft coupling; And the screw rotation direction of the first screw and the second screw is opposite.

[0018] The first nut is threadedly connected to the first screw, and the first nut is further fixedly connected with the second guide rod below the left half of the workbench through a first connecting plate.

[0019] The second nut is threadedly connected to the second screw, and the second nut is further fixedly connected with the second guide rod below the right half of the workbench through a second connecting plate.

[0020] The motor is used to drive the first screw and the second screw to rotate synchronously.

[0021] Preferably, the end of the first screw away from the second screw is installed on a first support through a bearing.

[0022] The second screw is installed on the second support through a bearing at one end away from the first screw;

[0023] The motor is in transmission connection with the one end of the second screw away from the first screw;

[0024] The first support, the second support and the motor are fixed on a mounting base.

[0025] Preferably, the clamping plates comprise vertical upright plates and horizontal bottom plates; the inner side of the vertical upright plates is provided with rubber pads; and the horizontal bottom plates are connected to the inner side of the bottom of the vertical upright plates.

[0026] The working principle of the utility model is as follows:

[0027] When clamping the circuit board, the manipulator transfers the circuit board to the upper side of the workbench of the utility model, and then the manipulator moves the circuit board downward, so that the circuit board is located at the clamping position and is slightly higher than the upper surface of the workbench by a certain distance;

[0028] Then, the motor is started to drive the first screw and the second screw to rotate synchronously, and since the rotation directions of the threads of the first screw and the second screw are opposite, the first nut and the second nut move toward each other during rotation; during this period, the first nut and the second nut drive the two second guide rods to move toward each other through the first connecting plate and the second connecting plate, and the movement of the two second guide rods toward each other drives the two clamping plates on the left side and the two clamping plates on the right side to move toward the center of the workbench; during the movement, the clamping plates move along the first guide rod and the second guide rod by means of the first sliding sleeve and the second sliding sleeve, and then move along the guide grooves toward the center of the workbench, so that the four clamping plates finally move in the direction toward the center of the workbench, that is, the distance between the left clamping plates and the right clamping plates gradually decreases during the movement, and at the same time, the distance between the two clamping plates on the left side and the distance between the two clamping plates on the right side also gradually decrease; finally, after the four clamping plates move to the predetermined position, the four clamping plates clamp the circuit board from the left and right sides of the circuit board;

[0029] Then, the circuit board can be subjected to circuit detection by automatic detection equipment;

[0030] After detection, the motor works in reverse, and during this process, the four clamping plates move along the guide grooves toward the direction away from the center of the workbench, so as to release the clamping of the circuit board; after release, the manipulator picks up and transfers the circuit board to the next process.

[0031] Based on the working principle, the four clamping plates can be radially contracted (or expanded) synchronously, the spacing between the two clamping plates on the same side can be changed, and therefore the circuit board testing jig clamping structure can better match circuit boards of different sizes, the spacing between the two clamping plates on the same side is larger when a larger size circuit board is clamped, and the spacing between the two clamping plates on the same side is smaller when a smaller size circuit board is clamped. Since the spacing between the two clamping plates on the same side can be automatically adapted, the circuit board testing jig clamping structure has good versatility and can be applied to circuit boards of various sizes, and the jig does not need to be replaced or adjusted during the test process due to changes in the size of the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure diagram of the circuit board testing jig clamping structure provided by the utility model;

[0033] Figure 2 is the structure diagram hidden behind the workbench on the basis of Figure 1

[0034] Figure 3 is the enlarged view of the clamping plate and the corresponding components below it in the utility model;

[0035] Figure 4 is the state of clamping the circuit board when the circuit board testing jig clamping structure of the utility model works Figure 1 ;

[0036] Figure 5 is the state of clamping the circuit board when the circuit board testing jig clamping structure of the utility model works Figure 2 ;

[0037] Figure 6 is the structure diagram hidden behind the circuit board and the workbench on the basis of Figure 5 DETAILED DESCRIPTION

[0038] The utility model will be further described in detail in combination with specific embodiments, but the implementation mode of the utility model is not limited thereto.

[0039] The utility model provides a kind of circuit board testing jig clamping structure, it includes workbench 100, clamping plate 200, first sliding sleeve 300, first guide rod 410, second sliding sleeve 500, second guide rod 610 and drive assembly 700.

[0040] Referring to Figure 1 ​​The workbench 100 is provided with four guide grooves 110 symmetrically arranged on the left and right, two of which are located on the left half of the workbench 100 and are V-shapedly distributed, and the other two are located on the right half of the workbench 100 and are also V-shapedly distributed. The closer to the center of the workbench 100, the smaller the interval between the two guide grooves 110 on the left half, and the smaller the interval between the two guide grooves 110 on the right half.

[0041] Referring to Figure 1 and Figure 2 The number of clamping plates 200 is four, which are arranged above the workbench 100 and matched with the four guide grooves 110 respectively.

[0042] Referring to Figure 2 and Figure 3 The number of first sliding sleeves 300 is also four, which are located below the workbench 100 and connected with the four clamping plates 200 respectively.

[0043] Referring to Figure 2 and Figure 3 The number of first guide rods 410 is also four, which are parallel to the four guide grooves 110 and arranged directly below the guide grooves 110. The four first sliding sleeves 300 are slidingly sleeved on the four first guide rods 410 respectively.

[0044] Referring to Figure 2 and Figure 3 The number of second sliding sleeves 500 is also four, which are fixedly connected to the bottom of the four first sliding sleeves 300 respectively.

[0045] Referring to Figure 2 and Figure 3 The number of second guide rods 610 is two, which are arranged below the workbench 100 in parallel. The two second sliding sleeves 500 below the left half of the workbench 100 are slidingly sleeved on the left second guide rod 610, and the two second sliding sleeves 500 below the right half of the workbench 100 are slidingly sleeved on the right second guide rod 610. The two first guide rods 410 and the second guide rod 610 below the left half of the workbench 100 form an isosceles triangle in the projection plane parallel to the workbench 100, and the two first guide rods 410 and the second guide rod 610 below the right half of the workbench 100 also form an isosceles triangle in the projection plane parallel to the workbench 100.

[0046] Referring to Figure 2 The driving assembly 700 is used to drive the two second guide rods 610 to move towards or away from each other.

[0047] In some embodiments, referring to Figure 3 , the first sliding sleeve 300 is connected with the corresponding clamping plate 200 through a connecting neck plate 310. The connecting neck plate 310 passes through the corresponding guide slot 110 from bottom to top, and there is a gap between the outer wall of the connecting neck plate 310 and the inner wall of the guide slot 110.

[0048] Further, the connecting neck plate 310 is provided with a roller 320 on each side to facilitate the sliding of the connecting neck plate 310 along the corresponding guide slot 110.

[0049] Thus, when the first sliding sleeve 300 moves along the first guide rod 410, the first sliding sleeve 300 drives the upper clamping plate 200 to move along the guide slot 110 through the connecting neck plate 310. During the movement, the rollers 320 on both sides of the connecting neck plate 310 can rotate along the inner wall of the guide slot 110, so that the connecting neck plate 310 and the clamping plate 200 can move smoothly and avoid being stuck.

[0050] In some embodiments, referring to Figure 2 , the inner ends of the four first guide rods 410 are fixed to an adapter 420, which is fixedly installed at the bottom of the center of the workbench 100. Specifically, the adapter 420 is provided with four insertion holes around it, and the inner ends of the four first guide rods 410 are respectively inserted and fixed in the four insertion holes. The middle part of the adapter 420 is fixed to the bottom of the center of the workbench 100 by screws, so that each first guide rod 410 can be fixedly installed at the bottom of the workbench 100.

[0051] In some embodiments, referring to Figure 2 , the driving assembly 700 includes a first screw rod 710, a first nut 720, a second screw rod 730, a second nut 740, and a motor 750.

[0052] The first screw rod 710 and the second screw rod 730 are coaxially connected through a shaft coupling 760, and the rotation directions of the threads of the first screw rod 710 and the second screw rod 730 are opposite.

[0053] The first nut 720 is threadedly connected to the first screw rod 710, and the first nut 720 is further fixedly connected with the second guide rod 610 below the left half workbench 100 through the first connecting plate 620.

[0054] The second nut 740 is threadedly connected to the second screw rod 730, and the second nut 740 is further fixedly connected with the second guide rod 610 below the right half workbench 100 through the second connecting plate 630.

[0055] The motor 750 is used to drive the first screw rod 710 and the second screw rod 730 to rotate synchronously.

[0056] Further, referring to Figure 2 , one end of the first screw rod 710 away from the second screw rod 730 is installed on the first support 820 through a bearing 810. One end of the second screw rod 730 away from the first screw rod 710 is installed on the second support 830 through a bearing 810. The motor 750 is in transmission connection with one end of the second screw rod 730 away from the first screw rod 710, so as to drive the first screw rod 710 and the second screw rod 730 to rotate synchronously. The first support 820, the second support 830 and the motor 750 are all fixed on a mounting base plate 900.

[0057] In some embodiments, referring to Figure 3 , the clamping plate 200 comprises vertical upright plates 210 and a horizontal bottom plate 220. The inner side of the vertical upright plate 210 is provided with a rubber pad 230. The horizontal bottom plate 220 is connected to the inner side of the bottom of the vertical upright plate 210. The rubber pad 230 can play a buffering role when the clamping plate 200 clamps the circuit board, avoiding rigid contact with the circuit board. The horizontal bottom plate 220 can play a role in placing and supporting the bottom of the circuit board.

[0058] The working principle of the utility model is as follows:

[0059] When clamping the circuit board, the manipulator transfers the circuit board a to the upper side of the workbench 100 of the utility model, and then the manipulator moves the circuit board a downwardly, so that the circuit board a is located at the clamping position and is slightly higher than the upper surface of the workbench 100 by a certain distance;

[0060] Afterwards, the motor 750 is started to drive the first screw rod 710 and the second screw rod 730 to rotate synchronously, and since the rotation directions of the threads of the first screw rod 710 and the second screw rod 730 are opposite, the first nut 720 and the second nut 740 move towards each other during the rotation; during this period, the first nut 720 and the second nut 740 drive the two second guide rods 610 to move towards each other through the first connecting plate 620 and the second connecting plate 630, and the movement of the two second guide rods 610 towards each other drives the two clamping plates 200 on the left and the two clamping plates 200 on the right to move towards the center of the workbench 100, and during the movement, the clamping plates 200 move along the first guide rod 410 and the second guide rod 610 at the same time by means of the first sliding sleeve 300 and the second sliding sleeve 500, and then move along the guide groove 110 to point to the center of the workbench 100, so that finally the four clamping plates 200 move synchronously along the direction pointing to the center of the workbench 100, that is, the distance between the left clamping plate 200 and the right clamping plate 200 gradually decreases during the movement, and at the same time, the distance between the two clamping plates 200 on the left and the distance between the two clamping plates 200 on the right also gradually decrease; finally, after the four clamping plates 200 move to the predetermined position, the four clamping plates 200 clamp the circuit board a from the left and right sides of the circuit board a, and the clamped state is as shown in Figure 4 ;

[0061] Subsequently, the circuit board a can be subjected to circuit detection by automatic detection equipment;

[0062] After detection is completed, the motor 750 works in reverse, and during this process, the four clamping plates 200 move along the guide groove 110 to the direction away from the center of the workbench 100, so as to release the clamping of the circuit board a; after release, the mechanical hand picks up and transfers the circuit board to the next process.

[0063] Based on the above working principle, it can be known that in the utility model, when the clamping plates 200 on the left and right sides move towards (or away from) each other, each clamping plate 200 moves towards (or away from) the center of the workbench 100, so that the four clamping plates 200 can synchronously contract (or expand) radially, and the distance between the two clamping plates 200 on the same side can change, so that the utility model can better match circuit boards a of different sizes, when clamping a circuit board a of a larger size, the distance between the two clamping plates 200 on the same side is larger (see Figure 4 ), and when clamping a circuit board a of a smaller size, the distance between the two clamping plates 200 on the same side is smaller (see Figure 5 and Figure 6). Since the spacing between the two clamps 200 on the same side can automatically adaptively change, the circuit board test fixture clamping structure has good versatility, and can be suitable for circuit boards of various sizes, and during the test process, the fixture does not need to be replaced or adjusted due to the change of the size of the circuit board.

[0064] The preferred embodiments of the utility model are described above only, and are not used to limit the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A circuit board test fixture clamping structure, characterized in that, The utility model relates to a kind of automatic feeding device for automatic feeding of multiple products, including: Workbench (100), four guide grooves (110) are provided on the workbench (100), two guide grooves (110) are located in the left half of the workbench (100) and are V-shapedly distributed, and the other two guide grooves (110) are located in the right half of the workbench (100) and are also V-shapedly distributed;And the closer to the center of the workbench (100), the smaller the interval of the two guide grooves (110) in the left half, and the smaller the interval of the two guide grooves (110) in the right half. Clamp plate (200), the number of the clamp plate (200) is four, four The clamp plate (200) is evenly arranged above the workbench (100) and is matched with four The guide groove (110) is arranged. First sliding sleeve (300), the number of the first sliding sleeve (300) is also four, four The first sliding sleeve (300) is located below the workbench (100) and is connected with four The clamp plate (200) is correspondingly connected. First guide rod (410), the number of the first guide rod (410) is also four, four First guide rod (410) is parallel to four The guide groove (110) and is arranged directly below the guide groove (110), and four The first sliding sleeve (300) is slidably sleeved on four The first guide rod (410) is arranged. Second sliding sleeve (500), the number of the second sliding sleeve (500) is also four, four The second sliding sleeve (500) is fixedly connected to the bottom of four The first sliding sleeve (300). Second guide rod (610), the number of the second guide rod (610) is two and is arranged in parallel on the left and right below the workbench (100);Wherein, two The second sliding sleeve (500) under the left half of the workbench (100) is slidably sleeved on the left second guide rod (610), and two The second sliding sleeve (500) under the right half of the workbench (100) is slidably sleeved on the right second guide rod (610);And two The first guide rod (410) and the second guide rod (610) under the left half of the workbench (100) form an isosceles triangle in the projection plane parallel to the workbench (100), and two The first guide rod (410) and the second guide rod (610) under the right half of the workbench (100) also form an isosceles triangle in the projection plane parallel to the workbench (100). Driving assembly (700), the driving assembly (700) is used to drive two The second guide rod (610) moves towards or moves away.

2. The test fixture clamping structure of claim 1, wherein The first sliding sleeve (300) is connected with the corresponding clamp plate (200) through a connecting neck plate (310), the connecting neck plate (310) passes through the corresponding guide groove (110) from bottom to top, and there is a gap between the outer wall of the connecting neck plate (310) and the inner wall of the guide groove (110).

3. The test fixture clamping structure of claim 2, wherein Rollers (320) are arranged on both sides of the connecting neck plate (310) to facilitate the sliding of the connecting neck plate (310) along the corresponding guide groove (110).

4. The test fixture clamping structure of claim 1, wherein The inner ends of the four first guide rods (410) are fixed to an adapter (420) which is fixedly installed at the bottom of the center of the workbench (100).

5. The test fixture clamping structure of claim 1, wherein The driving assembly (700) comprises a first screw rod (710), a first nut (720), a second screw rod (730), a second nut (740) and a motor (750). The first screw rod (710) and the second screw rod (730) are coaxially connected through a shaft coupling (760), and the screw rotation directions of the first screw rod (710) and the second screw rod (730) are opposite. The first nut (720) is threadedly connected to the first screw rod (710), and the first nut (720) is further fixedly connected to the second guide rod (610) below the left half workbench (100) through a first connecting plate (620). The second nut (740) is threadedly connected to the second screw rod (730), and the second nut (740) is further fixedly connected to the second guide rod (610) below the right half workbench (100) through a second connecting plate (630). The motor (750) is used to drive the first screw rod (710) and the second screw rod (730) to synchronously rotate.

6. The test fixture clamping structure of claim 5, wherein The end of the first screw rod (710) away from the second screw rod (730) is installed on a first support (820) through a bearing (810). The end of the second screw rod (730) away from the first screw rod (710) is installed on a second support (830) through a bearing (810). The motor (750) is in transmission connection with the end of the second screw rod (730) away from the first screw rod (710). The first support (820), the second support (830) and the motor (750) are all fixed on a mounting base plate (900).

7. The test fixture clamping structure of claim 1, wherein The clamping plate (200) comprises a vertical stand plate (210) and a horizontal bottom plate (220), the inner side of the vertical stand plate (210) is provided with a rubber pad (230), and the horizontal bottom plate (220) is connected to the inner side of the bottom of the vertical stand plate (210).

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