An automatic assembly fixture for LCD

Abstract

The present invention discloses an automatic assembly fixture for LCDs, comprising a base, a translation drive mechanism, a slide, a mounting plate, a PCBA fixture base, a PCBA contour positioning slot, an LCD fixture base, an LCD contour positioning slot, a folding mechanism, a lifting and fixing frame, a universal pressing head, and a lifting and driving mechanism. Through the above-described method, the automatic assembly fixture for LCDs of the present invention achieves automated assembly, not only improving the accuracy and efficiency of assembly operations and reducing assembly difficulty, but also effectively avoiding the risk of scrapping PCBAs and lowering management and production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic industry assembly, in particular to an automatic assembly fixture for LCD. Background Art

[0002] Currently, manual operations are still used to insert the LCD into the gap of the PCBA for pre-assembly, and then the LCD and the PCB are placed together in a manual corner-folding fixture to fold and fix the LCD.

[0003] However, this operation method has the following disadvantages:

[0004] 1. It is difficult to align the LCD pins with the PCBA slots, and careful observation is required for assembly during the alignment gap, especially when the outer dimensions of the LCD screen are relatively large.

[0005] 2. Low production efficiency. After pre-assembly of the PCBA, personnel need to manually insert the LCD into the fixture and fold the corners. This makes insertion and folding difficult.

[0006] 3. Every time the production model is switched, the corresponding model's indenter needs to be replaced simultaneously. Frequent switching of indenters is prone to errors, and multiple models cannot be produced at the same time. If the wrong indenter is replaced, the PCBA will be damaged.

[0007] 4. Unable to standardize operations. Summary of the Invention

[0008] The main technical problem solved by the present invention is to provide an automatic assembly fixture for LCD, which has the advantages of high reliability, precise positioning, compact structure, etc., and has broad market prospects in the application and popularization of LCD assembly equipment.

[0009] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0010] Provided is an automatic assembly fixture for LCD, which includes: a base, a translation drive mechanism, a slide, a mounting plate, a PCBA fixture seat, a PCBA profiling positioning slot, an LCD fixture seat, an LCD profiling positioning slot, a folding mechanism, a lifting and fixing frame, a universal pressure head, and a lifting and driving mechanism.

[0011] The mounting plate is arranged on the slide, the LCD jig seat is arranged on the mounting plate, and the LCD profiling positioning groove is arranged on the upper part of the LCD jig seat, the PCBA jig seat is elastically arranged on the mounting plate, the PCBA jig seat is movably arranged above the LCD jig seat, and the PCBA profiling positioning groove is arranged on the PCBA jig seat, the translation drive mechanism drives the slide to move back and forth on the base to approach or move away from the universal pressure head, the lifting and fixing frame is arranged on the base, the lifting and fixing frame is arranged on the lifting and fixing frame, and drives the universal pressure head to move up and down to press the PCBA and LCD.

[0012] The folding mechanism is arranged on both sides of the PCBA fixture seat. The folding mechanism includes a folding press head, a folding positioning seat and a folding drive device that drives the folding press head to move back and forth. The folding positioning seat is arranged on the mounting plate. The folding press head is movably arranged in the movable groove of the folding positioning seat and extends or retracts under the action of the folding drive device to bend the pins of the LCD.

[0013] In a preferred embodiment of the present invention, the PCBA profiling positioning groove is communicated with the LCD profiling positioning groove.

[0014] In a preferred embodiment of the present invention, the PCBA fixture seat is connected to the mounting plate via a spring or a spring bolt to provide a buffer during press-fit assembly.

[0015] In a preferred embodiment of the present invention, a guide post movably connected to a guide hole on the mounting plate is provided on the PCBA fixture seat, and a spring is wound around the guide post between the PCBA fixture seat and the mounting plate.

[0016] In a preferred embodiment of the present invention, the mounting plate is detachably connected to the PCBA fixture seat and the LCD fixture seat, respectively, so that different fixtures can be replaced according to different products to improve adaptability.

[0017] In a preferred embodiment of the present invention, a movable guide column is provided on the angle pressing head, and the movable guide column is movably connected to the guide hole on the angle positioning seat for precise guidance.

[0018] In a preferred embodiment of the present invention, a position sensor is provided on the mounting plate or the slide.

[0019] In a preferred embodiment of the present invention, the LCD fixture seat is movably connected to the mounting plate via a fine-tuning platform.

[0020] In a preferred embodiment of the present invention, transmission guide rails are provided on both sides of the base, and the slide is slidably connected to the transmission guide rails via a slider to accurately locate the position of the slide.

[0021] In a preferred embodiment of the present invention, a movable frame is provided on the lifting fixed frame so as to be liftable, and the lifting drive mechanism is provided on the movable frame, wherein a clamping ring on one side of the movable frame is sleeved on the lifting fixed frame, and a fixing screw for locking the clamping ring is provided at the opening of the clamping ring.

[0022] The beneficial effects of the present invention are: realizing automated assembly, which not only improves the accuracy and efficiency of assembly operations and reduces assembly difficulty, but also effectively avoids the risk of scrapping PCBAs and reduces management and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of an automatic assembly fixture for LCDs of the present invention;

[0025] Figure 2 This is a partial structural diagram of a preferred embodiment of an automatic assembly fixture for LCDs of the present invention;

[0026] Figure 3 The figure is a schematic top view of a preferred embodiment of an automatic assembly fixture for LCDs of the present invention. Implementation Method

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-3 , embodiments of the present invention include:

[0029] An automatic assembly fixture for LCD, comprising: a base 1, a translation drive mechanism 2, a slide 3, a mounting plate 4, a PCBA fixture seat 5, a PCBA profiling positioning groove 6, an LCD fixture seat 7, an LCD profiling positioning groove, a folding mechanism, a lifting and fixing frame 9, a universal pressing head 10, and a lifting and driving mechanism 11.

[0030] The mounting plate is arranged on the slide, the LCD jig seat is arranged on the mounting plate through existing adjustment mechanisms such as the fine-tuning platform 22, and the LCD contour positioning groove for placing and positioning the LCD8 is arranged on the upper part of the LCD jig seat, the PCBA jig seat is elastically arranged on the mounting plate, and the PCBA jig seat is movably arranged above the LCD jig seat, and the PCBA contour positioning groove for placing and positioning the PCBA21 is arranged on the PCBA jig seat, the PCBA contour positioning groove and the LCD contour positioning groove prevent the LCD position from changing during alignment offset and folding.

[0031] The corner folding mechanism is located on both sides of the PCBA fixture. It includes a corner pressing head 12, a corner positioning seat 13, and a corner driving device 14 that drives the corner pressing head back and forth. The corner positioning seat is located on the mounting plate. The corner pressing head is movably disposed in a movable groove of the corner positioning seat and extends or retracts under the action of the corner driving device to improve the accuracy of bending and fixing the LCD pins.

[0032] Further preferably, the PCBA profiling positioning groove is communicated with the LCD profiling positioning groove.

[0033] Further preferably, the PCBA fixture seat is connected to the mounting plate through a spring 15 or a spring bolt or other device to play a buffering role during press assembly to prevent damage to the product.

[0034] Further preferably, the PCBA jig seat is provided with a guide post 16 movably connected to the guide hole on the mounting plate, and the spring can also be directly wound around the guide post between the PCBA jig seat and the mounting plate.

[0035] Further preferably, the mounting plate is detachably connected to the PCBA fixture seat and the LCD fixture seat, respectively, so that different fixtures can be replaced according to different products to improve adaptability.

[0036] Further preferably, a movable guide column 17 is provided on the angle pressing head, and the movable guide column is movably connected to the guide hole on the angle positioning seat for precise guidance.

[0037] Further preferably, a position sensor 18 is provided on the mounting plate or the slide.

[0038] The translation drive mechanism drives the slide back and forth on the base, moving it closer to or further away from the universal pressing head. The lifting and fixing frame is mounted on the base, and the lifting drive mechanism is mounted on the lifting and fixing frame, driving the universal pressing head to move up and down to press the PCBA and LCD together. The universal pressing head can not only flatten the PCBA, but also switch between models without having to replace the pressing head.

[0039] Further preferably, transmission guide rails 19 are provided on both sides of the base, and the slide is slidably connected to the transmission guide rails via a slider to accurately locate the position of the slide.

[0040] Further preferably, the translation drive mechanism adopts equipment such as a cylinder and a linear module.

[0041] Further preferably, a movable frame 20 is provided on the lifting fixed frame, and one side of the movable frame is mounted on the lifting fixed frame through a clamping ring, so that the movable frame can move up and down to adjust its height according to actual needs. When the adjustment is completed, the clamping ring can be locked with a fixing screw, and the lifting drive mechanism is provided on the movable frame.

[0042] Further preferably, the lifting drive mechanism adopts equipment such as a cylinder.

[0043] The working steps of the automatic assembly fixture for LCD include:

[0044] Step 1: Place the LCD and PCBA into the LCD fixture and PCBA fixture respectively;

[0045] Step 2: Press the start button, and the translation drive mechanism translates the fixture base to the bottom of the universal pressure head through the slide, so that the PCBA and LCD fixtures move relative to each other for assembly, without the need for manual pre-assembly.

[0046] Step 3: The lifting drive mechanism drives the universal pressing head downward to press the PCBA fixture seat, so that the PCBA and LCD fixture are pressed together. At this time, the LCD lead (fixed) pins pass through the holes on the PCBA.

[0047] Step 4: The corner driving cylinder drives the corner pressing head to extend to bend the LCD pins to fix the LCD on the PCBA and prevent the LCD pins from falling out of the PCBA. The LCD pins are automatically bent and clamped to the PCBA without manual operation.

[0048] Step 5: The lifting drive mechanism drives the universal pressure head to lift up, and the PCBA fixture seat resets upward to drive the PCBA and LCD to lift together so that the finished product can be removed.

[0049] The beneficial effects of the automatic assembly fixture for LCD of the present invention are:

[0050] 1. Realize the automated assembly process, improve the assembly efficiency of operators, and reduce the difficulty of assembly;

[0051] 2. Avoid the risk of scrapping PCBAs and reduce the management costs of scrapping caused by manual assembly;

[0052] 3. When switching between multiple models, there is no need to replace any accessories, and production can be carried out directly, and even mixed-flow production can be achieved.

[0053] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic assembly fixture for LCD, characterized in that: include: Base, translation drive mechanism, slide, mounting plate, PCBA fixture seat, PCBA profiling positioning slot, LCD fixture seat, LCD profiling positioning slot, folding mechanism, lifting and fixing frame, universal pressure head, lifting and driving mechanism, The mounting plate is arranged on the slide, the LCD jig seat is arranged on the mounting plate, and the LCD profiling positioning groove is arranged on the upper part of the LCD jig seat, the PCBA jig seat is elastically arranged on the mounting plate, the PCBA jig seat is movably arranged above the LCD jig seat, and the PCBA profiling positioning groove is arranged on the PCBA jig seat, the translation drive mechanism drives the slide to move back and forth on the base to approach or move away from the universal pressure head, the lifting and fixing frame is arranged on the base, the lifting and fixing frame is arranged on the lifting and fixing frame, and drives the universal pressure head to move up and down to press the PCBA and LCD. The folding mechanism is arranged on both sides of the PCBA fixture seat, and includes a folding press head, a folding positioning seat, and a folding drive device that drives the folding press head to move back and forth. The folding positioning seat is arranged on the mounting plate, and the folding press head is movably arranged in the movable groove of the folding positioning seat and extends or retracts under the action of the folding drive device to bend the pins of the LCD; The PCBA jig seat is connected to the mounting plate through a spring or spring bolt to act as a buffer during press-fit assembly. The PCBA jig seat is provided with a guide column that is movably connected to the guide hole on the mounting plate. The spring is wound on the guide column between the PCBA jig seat and the mounting plate. The LCD jig seat is movably connected to the mounting plate through a fine-tuning platform.

2. The automatic assembly fixture for LCD according to claim 1, characterized in that: The PCBA profiling positioning groove is communicated with the LCD profiling positioning groove.

3. The automatic assembly fixture for LCD according to claim 1, characterized in that: The mounting plate is detachably connected to the PCBA fixture seat and the LCD fixture seat, so that different fixtures can be replaced according to different products to improve adaptability.

4. The automatic assembly fixture for LCD according to claim 1, characterized in that: The folding angle pressure head is provided with a movable guide column, and the movable guide column is movably connected to the guide hole on the folding angle positioning seat for precise guidance.

5. The automatic assembly fixture for LCD according to claim 1, characterized in that: A position sensor is provided on the mounting plate or the slide.

6. The automatic assembly fixture for LCD according to claim 1, characterized in that: Transmission guide rails are provided on both sides of the base, and the slide is slidably connected to the transmission guide rails via a slider to accurately locate the position of the slide.

7. The automatic assembly fixture for LCD according to claim 1, characterized in that: A movable frame is provided on the lifting fixed frame so as to be liftable, and the lifting drive mechanism is provided on the movable frame, wherein a clamping ring on one side of the movable frame is sleeved on the lifting fixed frame, and a fixing screw for locking the clamping ring is provided at the opening of the clamping ring.

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