Clamp device for probe machine

Abstract

The utility model relates to the technical field of probe machines, and provides a clamp device for a probe machine, which comprises a rack and two groups of clamping assemblies arranged on the rack and used for clamping a circuit board, and the distance between the two groups of clamping assemblies is adjustable. The clamping assembly comprises a lower supporting plate, an upper pressing plate hinged to the lower supporting plate and a driving part used for driving the upper pressing plate to deflect to achieve clamping / loosening. The distance between the two clamping assemblies is adjusted according to the size of a to-be-detected circuit board so as to adapt to the size of the to-be-detected circuit board, then the two sides of the circuit board are put on the lower supporting plates in the two clamping assemblies respectively, and the position of the circuit board is adjusted. And then the driving part drives the clamping opening of the upper pressing plate to deflect towards the direction of the lower supporting plate so as to tightly press and fix the circuit board, and the driving part can accurately control the deflection stroke and the clamping force of the upper pressing plate, so that the clamping requirements of soft and hard circuit boards with different thicknesses are met, and meanwhile, the effect of protecting the circuit board is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a probe machine technical field, concretely is a clamp device for probe machine. BACKGROUND

[0002] In the probe machine application, the clamping of circuit board is the key link in the detection process, traditionally, mainly through the air bag clamp to the circuit board clamping, however, the air bag clamp exposes a series of technical defects in practical application.

[0003] Firstly, the air bag clamp system configuration is complex, needs additional gas source device and a complete pneumatic system support, this not only increases the equipment cost, also brought the larger noise pollution, secondly, since the air bag clamp mouth size usually designs wide, to adapt to different size circuit board, but when detecting small area circuit board, the middle part of clamp mouth often becomes the main stress area, due to the elasticity of gas in the air bag and the flowability of pneumatic system, the pressure of the middle part of clamp mouth is difficult to control accurately, leads to the clamp mouth to produce deformation and drumming phenomenon, the deformation gradually intensifies with the lapse of time, makes the clamping ability of clamp to small thin plate decline, and the clamping reliability significantly reduces, in addition, since the air pressure system lacks flexibility, the clamping force is difficult to realize accurate regulation and control, and it is easy to cause the damage of circuit board.

[0004] Therefore, the utility model provides a clamp device for probe machine to solve the above -mentioned problems. UTILITY MODEL CONTENT

[0005] The embodiment of the utility model aims at providing a clamp device for probe machine to solve the above -mentioned problems.

[0006] In order to realize the above -mentioned purpose, the utility model provides the following technical scheme:

[0007] A clamp device for probe machine, including frame and two groups of clamping components for clamping circuit board on the frame, the distance between the two groups of clamping components is adjustable, the clamping component includes lower support plate, upper pressing plate hinged on the lower support plate and drive part for driving the deflection of upper pressing plate to realize clamping / unloading.

[0008] In an alternative, the upper pressing plate is provided with a plurality of unloading grooves.

[0009] In an alternative, the upper pressing plate clamp mouth is inverted V-shaped.

[0010] In an alternative: the driving component includes a box frame arranged on the lower support plate, an abutting piece arranged on the upper pressing plate, and a push block abutting against the abutting piece, the abutting piece has a curvature, the box frame is provided with a first guide rail and an integrated electric cylinder capable of displacement and force control feedback, the first guide rail is slidably provided with a sliding block, the sliding block is connected with the push block, and a push rod is arranged between the driving end of the integrated electric cylinder and the push block;

[0011] The driving component further includes a plurality of groups of magnetic attraction groups for driving the upper pressing plate to deflect and loosen, the magnetic attraction group includes a first magnetic attraction piece arranged on the lower support plate and a second magnetic attraction piece arranged on the upper pressing plate, and the first magnetic attraction piece is arranged opposite to the second magnetic attraction piece.

[0012] In an alternative: the tail end of the integrated electric cylinder is connected with the box frame, and a joint bearing is arranged between the tail end of the integrated electric cylinder and the box frame.

[0013] In an alternative: the clamp device further includes a distance adjusting assembly for adjusting the distance between the two groups of clamping assemblies.

[0014] In an alternative: the distance adjusting assembly includes at least one second guide rail arranged on the rack, two sliding seats are slidably arranged on the second guide rail, the two sliding seats are respectively connected with the lower support plates of the two groups of clamping assemblies, the rack is further provided with a second guide rail and a driving piece for driving the rotation of a reversible screw rod, and a connecting seat is threadedly arranged on the normal thread segment and the reverse thread segment of the reversible screw rod.

[0015] Compared with the prior art, the embodiments of the utility model have the following advantages:

[0016] 1. The distance between the two groups of clamping assemblies is adjusted according to the size of the circuit board to be detected, so that it is adapted to the size of the circuit board to be detected, and then the two sides of the circuit board are respectively placed on the lower support plates in the two groups of clamping assemblies, and the position of the circuit board is adjusted, then the driving component drives the upper pressing plate to deflect towards the lower support plate, so as to press and fix the circuit board, the driving component can accurately control the deflection stroke and clamping force of the upper pressing plate, so as to adapt to the clamping requirements of soft and hard circuit boards with different thicknesses, and also play a role in protecting the circuit board.

[0017] 2. The upper pressing plate has an inverted V-shaped (micro) clamping opening, when clamping the circuit board, the four corners of the circuit board are first clamped under stress, thereby improving the stability of the clamping of the circuit board.

[0018] 3. The tail end of the integrated electric cylinder is connected with the box frame, and a joint bearing is arranged between the tail end of the integrated electric cylinder and the box frame, which can fine tune the relative parallelism of the motion of the integrated electric cylinder and the first guide rail, protect the integrated electric cylinder, and further improve the durability of the integrated electric cylinder.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application. Together with the general description of the application given above, the drawings serve to explain principles of the application.

[0021] Figure 1 It is a structural schematic view of the utility model embodiment.

[0022] Figure 2 It is a structural schematic view of the clamping assembly in the utility model embodiment.

[0023] Figure 3 It is a partial schematic view of the upper pressing plate clamping opening in the utility model embodiment.

[0024] Figure 4 It is a Figure 2 E-E direction sectional view (clamping state) in the utility model embodiment.

[0025] Figure 5 It is a Figure 2 E-E direction sectional view (loose state) in the utility model embodiment.

[0026] Figure 6 It is a Figure 2 F-F direction sectional view in the utility model embodiment.

[0027] Figure 7 It is a Figure 1 Enlarged view of A in the utility model embodiment.

[0028] Legend: 1 - rack, 2 - clamping assembly, 201 - lower support plate, 202 - upper pressing plate, 203 - force releasing groove, 204 - driving part, 2041 - box frame, 2042 - integrated electric cylinder, 2043 - push rod, 2044 - first guide rail, 2045 - sliding block, 2046 - push block, 2047 - abutting piece, 2048 - first magnetic attraction piece, 2049 - second magnetic attraction piece, 20410 - joint bearing, 3 - distance adjusting assembly, 301 - second guide rail, 302 - positive and negative toothed screw, 303 - driving piece, 304 - sliding seat, 305 - connecting seat. DETAILED DESCRIPTION

[0029] The application will be further described in detail below with reference to the drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application, and the skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0030] Please refer to Figure 1 and Figure 3 A fixture device for a probe machine, comprising a frame 1 and two sets of clamping assemblies 2 arranged on the frame 1 for clamping a circuit board, the distance between the two sets of clamping assemblies 2 is adjustable, and the clamping assembly 2 comprises a lower support plate 201, an upper pressing plate 202 hingedly arranged on the lower support plate 201, and a driving component 204 for driving the upper pressing plate 202 to deflect to achieve clamping / detaching.

[0031] The distance between the two sets of clamping assemblies 2 is adjusted according to the size of the circuit board to be detected, so that it is adapted to the size of the circuit board to be detected, and then the two sides of the circuit board are respectively placed on the lower support plates 201 in the two sets of clamping assemblies 2, and the position of the circuit board is adjusted, then the clamping opening of the upper pressing plate 202 is driven by the driving component 204 to deflect towards the lower support plate 201, so as to press and fix the circuit board, the driving component 204 can accurately control the deflection stroke and clamping force of the upper pressing plate 202, so as to adapt to the clamping requirements of soft and hard circuit boards of different thicknesses, and also play a role in protecting the circuit board.

[0032] Further, a plurality of unloading grooves 203 are arranged on the upper pressing plate 202, which can reduce the deformation of the upper pressing plate 202 during processing, and also facilitate the stress release of the clamping force acting on the upper pressing plate 202 in the middle part during clamping and use, reduce the cumulative deformation of the two ends of the upper pressing plate 202, and improve the long-term precision retention of the upper pressing plate 202.

[0033] Further, the clamping opening of the upper pressing plate 202 is in inverted V shape (micro type), when clamping the circuit board, the four corners of the circuit board are first clamped under stress, which improves the stability of clamping the circuit board.

[0034] Please refer to Figure 1 , Figures 4-6 In an embodiment of the utility model, the driving component 204 comprises a box frame 2041 arranged on the lower support plate 201, an abutting piece 2047 arranged on the upper pressing plate 202, and a push block 2046 abutting with the abutting piece 2047, the abutting piece 2047 has an arc, the box frame 2041 is provided with a first guide rail 2044 and an integrated electric cylinder 2042 capable of displacement and force control feedback, the first guide rail 2044 is slidably provided with a sliding block 2045, the sliding block 2045 is connected with the push block 2046, and a push rod 2043 is arranged between the driving end of the integrated electric cylinder 2042 and the push block 2046.

[0035] The driving component 204 further comprises a plurality of groups of magnetic attraction groups for driving the upper pressing plate 202 to deflect and release, the magnetic attraction groups comprising a first magnetic attraction piece 2048 arranged on the lower supporting plate 201 and a second magnetic attraction piece 2049 arranged on the upper pressing plate 202, the first magnetic attraction piece 2048 and the second magnetic attraction piece 2049 being oppositely arranged.

[0036] It should be noted that the integrated cylinder 2042 is integrated with a displacement sensor and a force sensor, so as to realize accurate displacement (i.e. driving distance) and force control feedback, and ensure the accuracy of clamping control, and the corresponding feedback and control technology belongs to the prior art, which will not be described here.

[0037] In the embodiment, the clamping action specifically comprises: driving the push block 2046 to move laterally towards the abutting piece 2047 by the integrated cylinder 2042, since the push block 2046 abuts against the abutting piece 2047 and the abutting piece 2047 is connected with the upper pressing plate 202, when the push block 2046 moves, the push block 2046 will abut against the abutting piece 2047 and drive the upper pressing plate 202 to deflect towards the lower supporting plate 201, so as to realize the pressing and fixing of the circuit board; the releasing action specifically comprises: driving the push block 2046 to move laterally away from the abutting piece 2047 by the integrated cylinder 2042, and attracting the second magnetic attraction piece 2049 by the first magnetic attraction piece 2048, so as to drive the upper pressing plate 202 to deflect away from the lower supporting plate 201, and realize the releasing of the circuit board.

[0038] Further, in the embodiment, the push block 2046 is made of high-force brass material, so as to ensure its durability.

[0039] Further, in the embodiment, the tail end of the integrated cylinder 2042 is connected with the box frame 2041, and a joint bearing 20410 is arranged between the tail end of the integrated cylinder 2042 and the box frame 2041, so as to fine-tune the relative parallelism of the motion of the integrated cylinder 2042 and the first guide rail 2044, protect the integrated cylinder 2042, and improve the durability of the integrated cylinder 2042.

[0040] Please refer to Figure 1 and Figure 7 In an embodiment of the utility model, the clamp device further comprises a distance adjusting assembly 3 for adjusting the distance between the two groups of clamping assemblies 2.

[0041] The distance adjusting assembly 3 comprises at least one second guide rail 301 arranged on the frame 1, two sliding seats 304 are slidingly arranged on the second guide rail 301, the two sliding seats 304 are respectively connected with the lower supporting plates 201 of the two sets of clamping assemblies 2, the frame 1 is further provided with a second guide rail 301 and a driving member 303 for driving the rotation of the reverse toothed screw 302, the driving member 303 is a servo motor, the positive thread section and the reverse thread section of the reverse toothed screw 302 are both threadedly connected with a connecting seat 305, and the two connecting seats 305 are fixedly connected with the two sliding seats 304 respectively.

[0042] In the embodiment, the reverse toothed screw 302 is driven to rotate by the driving member 303, so as to drive the two sets of clamping assemblies 2 to move synchronously in opposite directions or in the same direction, thereby adjusting the distance between the two sets of clamping assemblies 2 to adapt to the size of the circuit board to be measured.

[0043] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A clamping device for a probe machine, characterized in that, It includes a frame (1) and two sets of clamping assemblies (2) mounted on the frame (1) for clamping circuit boards. The distance between the two sets of clamping assemblies (2) is adjustable. Each clamping assembly (2) includes a lower support plate (201), an upper pressure plate (202) hinged on the lower support plate (201), and a driving component (204) for driving the upper pressure plate (202) to deflect to achieve clamping / unloading.

2. The clamping device for a probe machine according to claim 1, characterized in that, The upper pressure plate (202) is provided with several pressure relief grooves (203).

3. The clamping device for a probe machine according to claim 1, characterized in that, The clamping opening of the upper pressure plate (202) is inverted V-shaped.

4. The clamping device for a probe machine according to claim 1, characterized in that, The driving component (204) includes a box frame (2041) on the lower support plate (201), an abutment (2047) on the upper pressure plate (202), and a push block (2046) abutting against the abutment (2047). The abutment (2047) has an arc. The box frame (2041) is provided with a first guide rail (2044) and an integrated electric cylinder (2042) capable of displacement and force control feedback. A slider (2045) is slidably provided on the first guide rail (2044). The slider (2045) is connected to the push block (2046). A push rod (2043) is provided between the driving end of the integrated electric cylinder (2042) and the push block (2046). The driving component (204) further includes several sets of magnetic suction groups for driving the upper pressure plate (202) to deflect and loosen. The magnetic suction group includes a first magnetic suction member (2048) disposed on the lower support plate (201) and a second magnetic suction member (2049) disposed on the upper pressure plate (202). The first magnetic suction member (2048) and the second magnetic suction member (2049) are arranged opposite to each other.

5. The clamping device for a probe machine according to claim 4, characterized in that, The tail end of the integrated electric cylinder (2042) is connected to the box frame (2041), and a spherical bearing (20410) is provided between the tail end of the integrated electric cylinder (2042) and the box frame (2041).

6. The clamping device for a probe machine according to claim 1, characterized in that, The clamping device also includes a distance adjustment component (3) for adjusting the distance between the two sets of clamping components (2).

7. The clamping device for a probe machine according to claim 6, characterized in that, The adjusting assembly (3) includes at least one second guide rail (301) mounted on the frame (1). Two slide blocks (304) are slidably mounted on the second guide rail (301). The two slide blocks (304) are respectively connected to the lower support plates (201) in the two sets of clamping assemblies (2). The frame (1) is also provided with the second guide rail (301) and a driving component (303) for driving the positive and negative threaded screws (302) to rotate. The positive thread section and the negative thread section of the positive and negative threaded screws (302) are both provided with connecting seats (305) in a threaded manner. The two connecting seats (305) are respectively fixedly connected to the two slide blocks (304).

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