CN107139100B

CN107139100B - Keyboard clamping mechanism based on dual functions of pressure and suction

Info

Publication number: CN107139100B
Application number: CN201710435511.XA
Authority: CN
Inventors: 莫伟健; 黄万演; 李东昆; 阮惠鹏
Original assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Current assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Priority date: 2017-06-11
Filing date: 2017-06-11
Publication date: 2023-01-17
Anticipated expiration: 2037-06-11
Also published as: CN107139100A

Abstract

The invention discloses a pressure and suction dual-action-based keyboard clamping mechanism, and aims to provide a pressure and suction dual-action-based keyboard clamping mechanism which combines a pressing plate module fixing mode and a vacuum adsorption fixing mode and can enable a keyboard to be tested to be flat and fixed. The device comprises a bottom plate, an in-out mechanism, a vacuum adsorption bearing mechanism and a pressing plate mechanism, wherein the in-out mechanism is fixedly arranged on the bottom plate, the vacuum adsorption bearing mechanism is in sliding fit with the in-out mechanism, the pressing plate mechanism is arranged above the in-out mechanism, and the in-out mechanism, the vacuum adsorption bearing mechanism and the pressing plate mechanism are all electrically connected with an external MCU control module. The invention is applied to the technical field of keyboard quality testing.

Description

Keyboard clamping mechanism based on dual functions of pressure and suction

Technical Field

The invention relates to a keyboard clamping mechanism, in particular to a keyboard clamping mechanism based on dual functions of pressure and suction.

Background

The keyboard is used as a device for inputting instructions and data in computer operation, the hand feeling of the keys is one of indexes for detecting the quality of the keyboard, and various keyboard hand feeling test equipment is produced in order to ensure the hand feeling quality of each keyboard. Because the keyboard to be tested is generally a semi-finished product, namely PCBA, in the keyboard hand feeling test, keys are added on the PCBA, the rigidity is not enough to ensure that the keyboard is kept flat in the assembling or moving, taking and placing processes, the keyboard often has a bending deformation state when reaching a hand feeling test station, and the unevenness of the placement of the keyboard can influence the accuracy of a test result, so how to ensure that the keyboard is flat in the test process is the key point of the whole test system.

At present, most of keyboard test equipment in the market adopts a relatively rough pressure plate structure or a simple vacuum adsorption structure to fix a keyboard.

The existing keyboard pressing plate module is fixed in the middle section of a long edge of a pressing plate by adopting an air cylinder, two linear sliding rails are fixed on two sides of the long edge of the pressing plate, the pressing plate is pressed on a keyboard by utilizing contraction or push-out of the air cylinder, a plurality of square avoiding grooves are processed in the middle of the pressing plate and used for avoiding keys of the keyboard when the pressing plate presses downwards, and the purpose of flattening the keyboard is achieved by utilizing a long and thin strip material between the square avoiding grooves to press the gap between the keys of the keyboard. However, the whole plane of the pressing plate is stressed after the pressing plate is pressed down, and the pressing plate is fixed at one side, so that the whole strength is insufficient, the pressing plate is easy to deform, the service life is short and the like; meanwhile, the pressing plate is thin due to the test requirement and the shape limitation of a product, the remaining material after the key avoiding groove is machined is thin, the strength is not enough in the processes of machining, transporting, installing or testing, local deformation is easily generated, and the keyboard is pressed unevenly so that test errors occur.

The existing fixing mode of keyboard vacuum adsorption is that a plurality of vacuum suction nozzle assemblies are installed on the front surface of a support plate bearing a keyboard, the tail end of each vacuum assembly penetrates through the support plate, and is connected with a vacuum generator after being tightly matched with an air pipe installation nozzle at the tail end of the vacuum assembly through an air pipe, and the vacuum generator is used for generating certain negative pressure vacuum to adsorb a product through a plastic suction nozzle. Because the general length of vacuum assembly is longer, and every vacuum assembly all need connect an trachea alone, so this kind of structure is comparatively complicated, and the space that occupies is great, and the trachea is more pleasing to the eye and not conform to the simplicity and convenience of installation maintenance, has also limited vacuum suction nozzle's installation quantity simultaneously, because vacuum suction nozzle's quantity can't arrange too much, can appear the product adsorption affinity not enough in overcoming the condition of the elasticity that produces because of recovering behind the keyboard plastic deformation, leads to the unable absorption of product smooth risk great. Vacuum suction does not exceed 1 atmosphere because the vacuum negative pressure is the biggest, so the suction of each vacuum suction nozzle is certain, can not infinitely increase, when great bending deformation appears in keyboard corner, be in when the total suction of vacuum of this department is less than the keyboard and overcome the required elasticity of deformation, the vacuum can be destroyed and can't suck the keyboard. Due to the unevenness of the product, an operator needs to lightly press the product with hands after placing the product to enable the product to be smoothly contacted with the vacuum suction nozzle so as to be adsorbed, and in the process, due to the fact that the manual operation cannot ensure the pressure, the risk that the product is crushed exists.

Therefore, no matter the pressing plate module is fixed or the vacuum adsorption is fixed, all the keyboards to be tested can not be guaranteed to be fixed smoothly.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a keyboard clamping mechanism which combines a pressing plate module fixing mode and a vacuum adsorption fixing mode and can enable a keyboard to be tested to be flat and fixed and is based on double functions of pressure and suction.

The technical scheme adopted by the invention is as follows: the device comprises a bottom plate, an in-out mechanism, a vacuum adsorption bearing mechanism and a pressing plate mechanism, wherein the in-out mechanism is fixedly arranged on the bottom plate, the vacuum adsorption bearing mechanism is in sliding fit with the in-out mechanism, the pressing plate mechanism is arranged above the in-out mechanism, and the in-out mechanism, the vacuum adsorption bearing mechanism and the pressing plate mechanism are all electrically connected with an external MCU control module.

Further, the in-out mechanism comprises a supporting plate symmetrically installed on the bottom plate, an in-out guide rail installed at the upper end of the supporting plate, a supporting frame assembly which is in sliding fit with the supporting plate through the in-out guide rail, and an in-out air cylinder installed on the supporting plate and connected with the supporting frame assembly, the supporting frame assembly comprises two main supports which are symmetrically arranged and two cross beams which are connected with the two main supports, an output shaft of the in-out air cylinder is connected with one of the main supports, a first mounting hole of the vacuum adsorption bearing mechanism is formed in the main support, and a second mounting hole of the pressing plate mechanism is formed in the supporting plate.

Further, the pressing plate mechanism is installed on the supporting plate through the installation hole II, the pressing plate mechanism comprises a pressing plate assembly and a pressing plate moving assembly, the pressing plate assembly comprises a pressing plate, a reinforcing plate and a pressing plate positioning pin, the reinforcing plate is connected to the upper end of the pressing plate through a plurality of high screws, the pressing plate positioning pin is arranged at the lower end of the pressing plate, the pressing plate moving assembly comprises a fixing plate, a cylinder fixing block, a pressing cylinder and a pressing plate fixing block, the cylinder fixing block is symmetrically arranged on the outer side face of the fixing plate, the pressing cylinder is connected to the lower end of the cylinder fixing block, the pressing plate fixing block is connected with an output shaft of the pressing cylinder through a connecting block, the inner side face of the fixing plate is symmetrically provided with a connecting linear guide rail, the pressing plate fixing block is in sliding fit with the fixing plate through the linear guide rail, and the pressing plate assembly is installed on the pressing plate fixing block.

Further, a plurality of buffer springs are further arranged between the pressing plate and the reinforcing plate, two limiting screws are arranged on the connecting block, two limiting lugs are arranged on the air cylinder fixing block, and the limiting screws are matched with the limiting lugs.

Further, the vacuum adsorption bearing mechanism is installed on the main support through the first installation hole, the vacuum adsorption bearing mechanism comprises a support plate and a support plate guide sleeve, an electrostatic conduction device, a product positioning pin and a plurality of product placement guide blocks which are all arranged on the support plate, the support plate guide sleeve is matched with the pressure plate positioning pin, a plurality of communicated vacuum cavity holes are transversely and longitudinally formed in the support plate, internal threads are all formed in ports of the vacuum cavity holes, an air pipe connector is installed on one port, other ports are locked and sealed through a screw and a raw rubber tape, the air pipe connector is connected with an external vacuum generator, a plurality of suction nozzle installation holes are formed in the upper end face of the support plate, the suction nozzle installation holes are all communicated with the vacuum cavity holes, vacuum suction nozzle installation columns are installed in the suction nozzle installation holes, one ends of the suction nozzle installation columns are tightly matched with the support plate, and vacuum suction nozzles are installed at the other ends of the support plate.

The invention has the beneficial effects that: the device adopts a design combining a pressing plate module fixing mode and a vacuum adsorption fixing mode, and comprises a bottom plate, an in-out mechanism, a vacuum adsorption bearing mechanism and a pressing plate mechanism, wherein the in-out mechanism is fixedly arranged on the bottom plate, the vacuum adsorption bearing mechanism is in sliding fit with the in-out mechanism, the pressing plate mechanism is arranged above the in-out mechanism, and the in-out mechanism, the vacuum adsorption bearing mechanism and the pressing plate mechanism are all electrically connected with an external MCU control module; the invention has compact, light and simple structure, convenient operation and easy maintenance.

Meanwhile, a buffer spring is arranged between the pressing plate and the reinforcing plate, so that the product is protected, and the product is prevented from being damaged due to overload of force of the pressing plate.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the access mechanism of the present invention;

FIG. 3 is a schematic view of the overall structure of the platen mechanism of the present invention;

FIG. 4 is a schematic diagram of the present novel platen assembly;

FIG. 5 is a schematic diagram of the present novel platen motion assembly;

FIG. 6 is a schematic structural diagram of a vacuum adsorption carrying mechanism of the present invention;

fig. 7 is a partial cross-sectional schematic view of a vacuum suction support mechanism of the present invention.

Detailed Description

As shown in fig. 1 to 6, in this embodiment, the present invention includes a bottom plate 1, an in-out mechanism 2, a vacuum adsorption bearing mechanism 3, and a platen mechanism 4, wherein the in-out mechanism 2 is fixedly mounted on the bottom plate 1, the vacuum adsorption bearing mechanism 3 is in sliding fit with the in-out mechanism 2, the platen mechanism 4 is disposed above the in-out mechanism 2, and the in-out mechanism 2, the vacuum adsorption bearing mechanism 3, and the platen mechanism 4 are all electrically connected to an external MCU control module.

The design combines two modes of fixing by the pressing plate and fixing by vacuum adsorption to clamp the product, and provides a reliable fixing mode for high-precision testing of the product; the invention has compact, light and simple structure, convenient operation and easy maintenance.

In this embodiment, the in-out mechanism 2 includes a support plate 21 symmetrically installed on the bottom plate 1, an in-out guide rail 22 installed at the upper end of the support plate 21, a support frame assembly 23 slidably fitted with the support plate 21 through the in-out guide rail 22, and an in-out cylinder 24 installed on the support plate 21 and connected to the support frame assembly 23, the support frame assembly 23 includes two main brackets 231 symmetrically installed and two cross beams 232 connecting the two main brackets 231, an output shaft of the in-out cylinder 24 is connected to one of the main brackets 231, a first mounting hole 25 of the vacuum adsorption bearing mechanism 3 is opened on the main bracket 231, and a second mounting hole 26 of the platen mechanism 4 is opened on the support plate 21.

In the design, products are conveniently placed on the vacuum adsorption bearing mechanism 3, then the products are transported to the position right below the pressing plate mechanism 4 through the in-out mechanism 2, so that the clamping and leveling are facilitated, and meanwhile, the operation safety of workers is guaranteed.

In this embodiment, the pressing plate mechanism 4 is installed on the supporting plate 21 through the second installation hole 26, the pressing plate mechanism 4 includes a pressing plate assembly 41 and a pressing plate moving assembly 42, the pressing plate assembly 41 includes a pressing plate 411, a reinforcing plate 413 connected to the upper end of the pressing plate 411 through a plurality of equal-height screws 412, and a pressing plate positioning pin 414 disposed at the lower end of the pressing plate 411, the pressing plate moving assembly 42 includes a fixing plate 421 symmetrically disposed, a cylinder fixing block 422 installed on the outer side surface of the fixing plate 421, a pressing cylinder 423 connected to the lower end of the cylinder fixing block 422, and a pressing plate fixing block 425 connected to an output shaft of the pressing cylinder 423 through a connecting block 424, a plurality of linear guide rails 426 are symmetrically disposed on the inner side surface of the fixing plate 421, the pressing plate fixing block 425 is slidably fitted to the fixing plate 421 through the linear guide rails 426, and the pressing plate assembly 41 is installed on the pressing plate fixing block 425.

This design has used both ends fixed mode of pushing down in step, utilizes two sets of linear guide 426 is fixed respectively the both ends of clamp plate subassembly 41, each group uses two linear guide 426, and the one end at clamp plate subassembly 41 is fixed to side by side and become the certain distance, can improve the intensity of mechanism greatly with this mode, promotes life. Both ends of clamp plate assembly 41 are all connected push down cylinder 423 uses same solenoid valve and same gas circuit simultaneous control the push down cylinder 423 at clamp plate assembly 41 both ends makes its ascending descending motion that rises in step, guarantees clamp plate 411 atress is even when pressing to the product, reduces clamp plate 411 produces the risk of warping because of the atress is uneven.

In this embodiment, a plurality of buffer springs 415 are further disposed between the pressing plate 411 and the reinforcing plate 413, two limit screws 427 are disposed on the connecting block 424, two limit bumps 428 are disposed on the cylinder fixing block 422, and the limit screws 427 are matched with the limit bumps 428.

According to the design, after the pressing plate 411 is contacted with a product, the pressing cylinder 423 continues to press downwards to compress the buffer spring 415, the pressing cylinder 423 controls the pressing speed of the pressing plate 411 to slow down, when the limiting screw 427 on the connecting block 424 is contacted with the limiting lug 428 on the cylinder fixing block 422, the pressing cylinder 423 stops working, the pressing action of the pressing plate 411 stops, at the moment, the pressing plate 411 only presses the keyboard downwards by the elastic force of the buffer spring 415, and the product cannot be damaged by the overload of the force of the pressing cylinder 423.

In this embodiment, the vacuum adsorption bearing mechanism 3 is installed on the main support 231 through the first mounting hole 25, the vacuum adsorption bearing mechanism 3 includes a support plate 31, and a support plate guide sleeve 32, an electrostatic guiding device 33, a product positioning pin 34 and a plurality of product placing guide blocks 35 all disposed on the support plate 31, the support plate guide sleeve 32 is matched with the press plate positioning pin 414, a plurality of communicated vacuum cavity holes 36 are transversely and longitudinally disposed inside the support plate 31, an internal thread is tapped at a port of each vacuum cavity hole 36, an air pipe joint 37 is installed at a port of one of the vacuum cavity holes 36, other ports are locked and sealed by a rice screw 38 and a raw rubber tape, the air pipe joint 37 is connected with an external vacuum generator, a plurality of suction nozzle mounting holes 39 are disposed on an upper end surface of the support plate 31, the suction nozzle mounting holes 39 are all communicated with the vacuum cavity holes 36, vacuum suction nozzle mounting posts 310 are installed in the suction nozzle mounting holes 39, one end of the vacuum nozzle mounting posts 310 is closely matched with the support plate 31, and a vacuum suction nozzle 311 is installed at the other end.

This design is in a plurality of counter bores of support plate 31's up end processing, promptly suction nozzle mounting hole 39, counter bore degree of depth require the precision to guarantee 0.05mm, in order to ensure vacuum nozzle 311's mounting height, the counter bore does not run through support plate 31, installs in every counter bore vacuum nozzle erection column 310, vacuum nozzle erection column 310 is the step round pin form, and middle diameter is big, the restriction vacuum nozzle erection column 310 with support plate 31 complex mounting height and with vacuum nozzle 311 complex mounting height, vacuum nozzle erection column 310 both ends diameter is little, respectively with support plate 31 with vacuum nozzle 311 tight fit installation. The carrier plate 31 is processed with a plurality of vacuum cavity holes 36 with a diameter of 6mm from the side surface, all the vacuum cavity holes 36 are required to be communicated and communicated with all the suction nozzle mounting holes 39, as shown in fig. 6, internal threads are required to be tapped at the ports of all the vacuum cavity holes 36, wherein one port is reserved for mounting the air pipe joint 37 to be connected with an external vacuum generator, and the other holes are all locked and sealed by the raw material tape by the base rice screw 38. This design, used space is little, and the structure is succinct, and it is convenient to maintain, and the space restriction is less, vacuum suction nozzle 311 quantity can arrange a plurality ofly according to the condition, strengthens vacuum suction, guarantees that the product adsorbs smoothly. The vacuum suction nozzle 311 includes a micro vacuum suction nozzle and a medium vacuum suction nozzle.

The invention is applied to the technical field of keyboard quality testing.

While the embodiments of the invention have been described in terms of practical embodiments, they are not to be construed as limiting the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present disclosure.

Claims

1. The utility model provides a keyboard clamping machine constructs based on pressure and suction dual function which characterized in that: the device comprises a bottom plate (1), an in-out mechanism (2), a vacuum adsorption bearing mechanism (3) and a pressing plate mechanism (4), wherein the in-out mechanism (2) is fixedly installed on the bottom plate (1), the vacuum adsorption bearing mechanism (3) is in sliding fit with the in-out mechanism (2), the pressing plate mechanism (4) is arranged above the in-out mechanism (2), and the in-out mechanism (2), the vacuum adsorption bearing mechanism (3) and the pressing plate mechanism (4) are electrically connected with an external MCU control module; the in-out mechanism (2) comprises support plates (21) symmetrically arranged on the bottom plate (1), in-out guide rails (22) arranged at the upper ends of the support plates (21), support frame assemblies (23) in sliding fit with the support plates (21) through the in-out guide rails (22), and in-out air cylinders (24) arranged on the support plates (21) and connected with the support frame assemblies (23), wherein each support frame assembly (23) comprises two main supports (231) symmetrically arranged and two cross beams (232) connecting the two main supports (231), an output shaft of each in-out air cylinder (24) is connected with one of the main supports (231), the main supports (231) are provided with first mounting holes of the vacuum adsorption bearing mechanisms (3), and the support plates (21) are provided with second mounting holes of the pressing plate mechanisms (4); the pressing plate mechanism (4) is installed on the supporting plate (21) through the second installation hole, the pressing plate mechanism (4) comprises a pressing plate assembly (41) and a pressing plate moving assembly (42), the pressing plate assembly (41) comprises a pressing plate (411), a reinforcing plate (413) connected to the upper end of the pressing plate (411) through a plurality of equal-height screws (412), and a pressing plate positioning pin (414) arranged at the lower end of the pressing plate (411), the pressing plate moving assembly (42) comprises a fixing plate (421) which is symmetrically arranged, a cylinder fixing block (422) installed on the outer side surface of the fixing plate (421), a pressing cylinder (423) connected to the lower end of the cylinder fixing block (422), and a pressing plate fixing block (425) connected with an output shaft of the pressing cylinder (423) through a connecting block (424), a connecting linear guide rail (426) is symmetrically arranged on the inner side surface of the fixing plate (421), the pressing plate fixing block (425) is in sliding fit with the fixing plate (421) through the linear guide rail (426), and the pressing plate assembly (41) is installed on the pressing plate fixing block (425); the vacuum adsorption bearing mechanism (3) is installed through the first mounting hole on the main support (231), the vacuum adsorption bearing mechanism (3) comprises a support plate (31) and a support plate guide sleeve (32), an electrostatic guide device (33), a product positioning pin (34) and a plurality of product placing guide blocks (35) which are all arranged on the support plate (31), the support plate guide sleeve (32) is matched with the press plate positioning pin (414), a plurality of communicated vacuum cavity holes (36) are transversely and longitudinally formed in the support plate (31), internal threads are respectively formed in the port of each vacuum cavity hole (36), one of the internal threads is formed in the port of each vacuum cavity hole (36) and is provided with an air pipe joint (37), other ports are locked and sealed through a base rice screw (38) and a raw rubber belt, the air pipe joint (37) is connected with an external vacuum generator, a plurality of suction nozzle mounting holes (39) are formed in the upper end face of the support plate (31), the suction nozzle mounting holes (39) are respectively communicated with the vacuum cavity holes (36), a vacuum nozzle mounting post (310) is installed in each vacuum mounting hole (39), and one end of each suction nozzle mounting post (310) is tightly matched with the vacuum cavity hole (31) and is provided with the vacuum mounting post (311).

2. The keyboard clamping mechanism based on double functions of pressure and suction according to claim 1, characterized in that: a plurality of buffer springs (415) are further arranged between the pressing plate (411) and the reinforcing plate (413), two limiting screws (427) are arranged on the connecting block (424), two limiting lugs (428) are arranged on the air cylinder fixing block (422), and the limiting screws (427) are matched with the limiting lugs (428).