CN-122025457-A - Automatic pressing and attaching device for display key cap

CN122025457ACN 122025457 ACN122025457 ACN 122025457ACN-122025457-A

Abstract

The invention relates to the technical field of key cap processing equipment, and particularly discloses an automatic pressing and attaching device for a display key cap, which comprises a frame, a pressing mechanism and a control assembly, wherein the pressing mechanism comprises a circuit board positioning tool driven by an air cylinder and used for placing a key shaft, the circuit board positioning tool is provided with an auxiliary positioning assembly which comprises a symmetrical transverse moving seat, a longitudinal moving beam and a lateral pressing strip, a transverse sliding groove with an elastic pushing piece is arranged in the circuit board, the lateral pressing strip is driven to press and hang the key cap, a first unlocking assembly and a second unlocking assembly are arranged on the frame, and the first unlocking assembly and the second unlocking assembly are respectively and automatically driven to release the key cap before pressing and after pressing, so that automatic operation of stable limiting and accurate pressing is realized.

Inventors

ZHANG KAI
GUO HUI
JIAN CHANGZHOU
XING XINXIN

Assignees

江苏嘉视电子科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (10)

1. The utility model provides an automatic laminating device that presses of display button cap, includes the frame, sets up pressing mechanism in the frame and is used for controlling pressing mechanism's control assembly, control assembly includes barometer, time controller and pressurize button, its characterized in that: The pressing mechanism comprises a storage plate which is driven by an air cylinder to move up and down, and the storage plate is used for bearing a circuit board positioning tool provided with a key shaft; the object placing plate is provided with at least one group of auxiliary positioning components corresponding to the key shaft assembly grooves on the circuit board positioning tool; each group of auxiliary positioning components comprises two transverse moving seats which are symmetrically arranged, a longitudinal moving beam which is in sliding connection with the transverse moving seats, and a lateral pressing bar which is fixed on the longitudinal moving beam and is used for abutting against the key cap from the lateral direction; A transverse chute is arranged in the storage plate, a limiting bottom plate and an elastic pushing piece for providing elastic force for the limiting bottom plate so as to enable the lateral pressing strip to press the key cap are arranged in the transverse chute, and one end of the limiting bottom plate is fixedly connected with the transverse moving seat; the rack is provided with a first unlocking component which is used for driving the transverse moving seat to overcome the elastic force of the elastic pushing piece to horizontally move before the object placing plate drives the key cap to move upwards to the attaching position so as to enable the lateral pressing bar to loosen the key cap; And a second unlocking component is further arranged on the frame and used for driving the horizontal moving seat to horizontally move when the object placing plate moves downwards to reset after the pressing is finished, so that the lateral pressing strip releases the key cap again, and the circuit board positioning tool is convenient to take out.
2. The automatic pressing and attaching device for the display key cap of claim 1, wherein the first unlocking component comprises a first clamping column, a first push rod, a first sliding seat, an upper end supporting column and an upper end connecting strip, wherein the inner wall of the frame is provided with a radial guide groove, and the first sliding seat is arranged in the radial guide groove in a limiting sliding manner; The upper half of the transverse moving seat is penetrated and provided with a first driving groove for accommodating the first clamping column, and the first driving groove consists of a chute at the upper end and a vertical groove at the lower end.
3. The device for automatically pressing and attaching the display button cap according to claim 2, wherein one end of the first push rod is fixedly connected with the first clamping column, and the other end of the first push rod extends into the radial guide groove and is fixedly connected with the first sliding seat; The top of the first sliding seat is in abutting connection with an upper end supporting column, the upper end of the upper end supporting column is fixedly connected with an upper end connecting strip, and the upper end connecting strip is fixedly arranged at the upper end of the inner wall of the rack.
4. The automatic pressing and attaching device for the display key cap of claim 3, wherein the second unlocking component comprises a second clamping column, a second push rod, a second slide seat, a lower end supporting column and a lower end connecting strip, wherein one end of the second push rod is fixedly connected with the second clamping column, and the other end of the second push rod is fixedly connected with the second slide seat; the lower half part of the transverse moving seat is provided with a second driving groove for accommodating the second clamping column, and the second driving groove is an inclined groove.
5. The automatic pressing and attaching device for the display key cap of claim 4, wherein the second slide seat is arranged in the radial guide groove in a limiting sliding mode, one end of the lower end supporting column is in abutting connection with the bottom surface of the second slide seat, and the other end of the lower end supporting column is fixedly connected to the lower end connecting strip.
6. The automatic pressing and attaching device for the display key caps of claim 5, wherein a plurality of balls are movably mounted on contact surfaces of the first sliding seat, the second sliding seat and the radial guide groove, and matching sliding grooves for accommodating the balls are concavely formed in the side walls of the radial guide groove.
7. The automatic pressing and attaching device for the display key cap of claim 6, wherein the lower connecting bar is arranged on the frame in a limiting sliding manner, an inner screw hole is formed in the middle of the lower connecting bar in a penetrating manner, and a vertical screw rod is connected in the inner screw hole in a rotating manner; The vertical screw is installed on the frame in a limiting rotation mode, the upper end of the vertical screw is coaxially connected with a driven bevel gear, the driven bevel gear is connected with a driving bevel gear in a meshed mode, and the driving bevel gear is driven to rotate by a rotary driving piece.
8. The automatic pressing and attaching device for the display key cap of claim 7, wherein the elastic pushing piece comprises a reset spring and a guide rod, wherein the reset spring is in abutting connection with one side of the limiting bottom plate, and a cushion block is arranged on one side, far away from the reset spring, of each transverse chute; The guide rod extends into the storage plate from the outside and sequentially penetrates through the limiting bottom plates and the reset springs in series.
9. The automatic pressing and attaching device for the display key caps of claim 8, wherein the pressure maintaining keys are arranged in two groups and symmetrically arranged on the bottom plate of the frame, and the pressing mechanism can be started by pressing both hands simultaneously.
10. The automatic pressing and attaching device for the display key cap of claim 9, wherein the end part of a piston rod of the air cylinder is sequentially screwed with a link block and an adjusting nut through internal and external threads, and the upper end of the link block is in abutting connection with the lower end face of the storage plate.

Description

Automatic pressing and attaching device for display key cap Technical Field The invention relates to the technical field of key cap processing equipment, in particular to an automatic pressing and attaching device for a display key cap. Background The key cap is used as an important component of man-machine interaction equipment (such as a display control panel, a keyboard, a remote controller, an instrument panel and the like), and the assembly quality of the key cap directly influences the use handfeel, the appearance and the durability of a product. In the prior art, the key cap is usually installed on the key shaft through a buckle structure, and the traditional assembly mode is mostly dependent on manual pressing or auxiliary positioning by using a simple jig. However, with the development of light and thin display devices with high integration, the size of the keys on the control panel is finer, the arrangement is more compact, the manual operation is not only inefficient, but also the key caps are easy to be skewed, damaged or attached due to uneven pressing force and inaccurate alignment, which seriously affects the consistency and yield of the product, and further affects the overall quality of the display. To solve the above problems, some semi-automatic or automatic press-fit devices for press-fit caps have appeared in the market, for example, a device that a cylinder drives a press head to press down is adopted, so that press-fit efficiency can be improved to a certain extent. The device is still obviously insufficient when being applied to the lamination of the display key caps, 1, most devices lack an effective limiting mechanism for the key caps before lamination, the key caps are in a hanging state in the process of moving upwards along with a workpiece and are easy to shake and deviate, so that the key caps are inaccurate in alignment with key shafts, and particularly, the influence on densely arranged keys on a display panel is more obvious, 2, the existing devices are not generally designed with an automatic release mechanism of a lateral limiting mechanism in the lamination process, if lateral lamination is continued until the lamination is instant, the normal pressing of the key caps can be interfered instead, so that buckles cannot be completely embedded or the stress of the key caps is uneven, 3, the operation safety is insufficient, and the risk of clamping injury caused by false touch starting exists. Disclosure of Invention The invention aims to provide the display button cap automatic pressing and attaching device which can realize accurate positioning, automatic limiting and releasing, is safe and reliable and has strong adaptability, so as to solve the problems in the background technology. In order to achieve the aim, the invention provides the technical scheme that the automatic pressing and attaching device for the display button cap comprises a frame, a pressing mechanism arranged on the frame and a control component for controlling the pressing mechanism, wherein the control component comprises a barometer, a pressing time controller and a pressure maintaining button, The pressing mechanism comprises a storage plate which is driven by an air cylinder to move up and down, and the storage plate is used for bearing a circuit board positioning tool provided with a key shaft; the object placing plate is provided with at least one group of auxiliary positioning components corresponding to the key shaft assembly grooves on the circuit board positioning tool; each group of auxiliary positioning components comprises two transverse moving seats which are symmetrically arranged, a longitudinal moving beam which is in sliding connection with the transverse moving seats, and a lateral pressing bar which is fixed on the longitudinal moving beam and is used for abutting against the key cap from the lateral direction; A transverse chute is arranged in the storage plate, a limiting bottom plate and an elastic pushing piece for providing elastic force for the limiting bottom plate so as to enable the lateral pressing strip to press the key cap are arranged in the transverse chute, and one end of the limiting bottom plate is fixedly connected with the transverse moving seat; the rack is provided with a first unlocking component which is used for driving the transverse moving seat to overcome the elastic force of the elastic pushing piece to horizontally move before the object placing plate drives the key cap to move upwards to the attaching position so as to enable the lateral pressing bar to loosen the key cap; And a second unlocking component is further arranged on the frame and used for driving the horizontal moving seat to horizontally move when the object placing plate moves downwards to reset after the pressing is finished, so that the lateral pressing strip releases the key cap again, and the circuit board positioning tool is convenient to take out. Preferably, the first unlocking comp