Lifting mechanism of upper carrier plate frame of temporary storage machine

Abstract

The utility model provides a lifting mechanism of a carrier plate frame on a temporary storage machine, and belongs to the technical field of PCB (printed circuit board) processing equipment. The temporary storage machine comprises a rack and a longitudinal guide rail arranged on the rack, a plurality of plate carrying frames are longitudinally and slidably connected to the longitudinal guide rail, the lifting mechanism comprises at least one rotating wheel rotationally connected to the rack, the axis of the rotating wheel is parallel to the longitudinal guide rail, and a spiral guide groove is formed in the circumferential face of the rotating wheel. A bearing matched with the spiral guide groove is rotationally connected to the carrier, the axis of the bearing is parallel to the supporting rod, the rotating wheel is driven by a driving mechanism to rotate, and the bearing is connected to the lower side spiral face of the spiral guide groove in a rolling mode. The utility model has the advantage of stable lifting of the carrier plate frame.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board processing equipment and relates to a lifting mechanism of a board loading rack on a temporary storage machine. Background Art

[0002] During the PCB processing process, the coating needs to be temporarily stored in multiple processes such as curing and cooling, so that it can enter the corresponding processing link again after meeting the process requirements; the applicant learned during the actual application of the equipment to users that the PCB board temporary storage machine has the following problems: due to the large number of carriers (40 layers in a single row), the prior method (the method with application number CN202322227240.2) is adopted, and the carrier is pushed upward as "inching", which has a strong setback and the movement of the carrier is not smooth. There is a probability of PCB board dislocation, "jumping" and slipping on the carrier. In addition, the high load caused by the synchronous upward movement of many carriers by the same pushing mechanism has a relatively low movement accuracy. There is a problem that the end carrier does not detach from the longitudinal track or the two carriers detach from the end track at the same time, resulting in equipment operation failure. Utility Model Content

[0003] The purpose of the utility model is to provide a lifting mechanism for a plate carrier on a temporary storage machine in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the utility model is to improve the stability of the lifting of the plate carrier.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a lifting mechanism for a plate rack on a temporary storage machine, characterized in that the temporary storage machine includes a frame and a longitudinal guide rail arranged on the frame, and a plurality of plate racks are longitudinally slidably connected to the longitudinal guide rail. The lifting mechanism includes at least one rotating wheel rotatably connected to the frame, the axis of the rotating wheel is parallel to the longitudinal guide rail, and a spiral guide groove is provided on the circumferential surface of the rotating wheel. A bearing that cooperates with the spiral guide groove is rotatably connected to the carrier, and the axis of the bearing is parallel to the support rod. The rotating wheel is driven to rotate by a driving mechanism, and the bearing is rollingly connected to the lower spiral surface of the spiral guide groove.

[0005] Furthermore, there are four rotating wheels, which are coaxial and alternately arranged, and each rotating wheel carries a plurality of plate carriers on the same set of longitudinal guide rails.

[0006] Furthermore, among adjacent rotating wheels, there is a gap between the top plate carrier supported by the rotating wheel located below and the bottom plate carrier supported by the rotating wheel located above.

[0007] Furthermore, the number of turns of the spiral guide groove is greater than 2; from bottom to top, the spacing between the lower spiral surfaces between adjacent turns of the spiral guide groove gradually increases, and the minimum spacing between adjacent turns of the spiral guide groove is not less than the thickness of the carrier.

[0008] It is not difficult to see that this solution is based on the applicant's prior application. The longitudinal movement mode of the board carrier is changed from "inching" to smooth linear movement, which can improve the jitter of the board carrier during the longitudinal movement, improve the continuity and smoothness of the longitudinal movement, significantly reduce the shaking of the support rod, improve the stability and reliability of the board carrier, and overcome the disadvantage of damaging the board surface coating due to mutual friction between the PCB board surface and the support rod.

[0009] There are a large number of plate carriers on the same set of longitudinal guide rails. If they are driven by the same rotary wheel, the load will inevitably be heavy. The plate carriers near the bottom are under greater weight and are easily damaged or stuck. The running resistance between the plate carriers and the longitudinal guide rails is large, which affects the operational reliability and also places extremely high requirements on the precision of each part. Therefore, in this solution, multiple rotary wheels are used to share the load of multiple plate carriers on the same set of longitudinal guide rails. The load of a single rotary wheel is reduced, the clamping force between the plate carriers is reduced, the running resistance of the plate carriers on the longitudinal guide rails is reduced, the machining precision requirements for each part are reduced, and the operational reliability of the equipment is improved.

[0010] Furthermore, since the spiral guide groove on the wheel is of a "variable pitch" design, when the wheel rotates, it ensures that the bearings at different positions of the spiral guide groove are effectively supported without being suspended, which further shares the load and allows more carriers to be independently driven when the wheel rotates, making the up and down movement smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the horizontal vertical buffer temporary storage machine.

[0012] Figure 2 It is a side view of the horizontal vertical buffer temporary storage machine after removing the outer protective plate.

[0013] Figure 3 It is a structural diagram of a single lifting mechanism.

[0014] Figure 4 yes Figure 3 Enlarged view of part A in the figure.

[0015] Figure 5 This is a diagram of the coordination between the rotating wheel and the plate carrier.

[0016] In the figure, 1, frame; 2, longitudinal guide rail; 31, rotating wheel; 32, spiral guide groove; 4, plate carrier; 41, carrier; 42, support rod; 43, bearing. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figures 1 to 5As shown, the horizontal vertical buffer temporary storage machine includes a frame 1 and two sets of longitudinal guide rails 2 arranged in parallel on the frame 1, and a plurality of plate carriers 4 are longitudinally slidably connected to the two sets of longitudinal guide rails 2. The plate carriers 4 include a carrier 41 and a plurality of support rods 42 fixed alternately on the carrier 41;

[0019] The lifting mechanism includes at least one rotating wheel 31 rotatably connected to the frame 1, the axis of the rotating wheel 31 is parallel to the longitudinal guide rail, a spiral guide groove 32 is provided on the circumferential surface of the rotating wheel 31, a bearing 43 matching the spiral guide groove 32 is rotatably connected to the carrier 41, the axis of the bearing 43 is parallel to the support rod 42, the rotating wheel 31 is driven to rotate by the driving mechanism, and the bearing 43 is rollingly connected to the lower spiral surface of the spiral guide groove 32.

[0020] The lifting mechanism includes four longitudinally coaxial rotating wheels 31 arranged alternately, and each rotating wheel 31 carries 11 plate carriers 4 on the same set of longitudinal guide rails 2.

[0021] There is a gap between the top plate carrier 4 carried by the lower wheel 31 and the bottom plate carrier 4 carried by the upper wheel 31 in the adjacent wheels 31. In other words, the plate carriers 4 carried by the adjacent wheels 31 are independent, and each wheel 31 bears 11 plate carriers 4.

[0022] The number of turns of the spiral guide groove 32 is greater than 2; from bottom to top, the spacing between the lower spiral surfaces of adjacent turns of the spiral guide groove 32 gradually increases, and the minimum spacing between adjacent turns of the spiral guide groove 32 is not less than the thickness of the carrier 41 .

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lifting mechanism for a plate rack on a temporary storage machine, characterized in that: The temporary storage machine comprises a frame (1) and a longitudinal guide rail (2) arranged on the frame (1); a plurality of plate carriers (4) are longitudinally slidably connected to the longitudinal guide rail (2); the plate carriers (4) comprise a carrier (41) and a plurality of support rods (42) fixed alternately on the carrier (41); a lifting mechanism (3) can drive the plate carriers (4) on the same group of longitudinal guide rails (2) to move up or down; the lifting mechanism (3) comprises at least one rotating wheel (31) rotatably connected to the frame (1); the axis of the rotating wheel (31) is parallel to the vertical guide rail; a spiral guide groove (32) is provided on the circumference of the rotating wheel (31); a bearing (43) matched with the spiral guide groove (32) is rotatably connected to the carrier (41); the axis of the bearing (43) is parallel to the support rod (42); the rotating wheel (31) is driven to rotate by a driving mechanism; and the bearing (43) is rollingly connected to the lower spiral surface of the spiral guide groove (32).

2. The lifting mechanism of the plate rack on the temporary storage machine according to claim 1, characterized in that: The lifting mechanism (3) comprises four longitudinally coaxial rotating wheels (31) arranged alternately, and each rotating wheel (31) carries a plurality of plate carriers (4) on the same set of longitudinal guide rails (2).

3. The lifting mechanism of the plate rack on the temporary storage machine according to claim 2, characterized in that: In adjacent rotating wheels (31), there is a gap between the top plate carrier (4) carried by the rotating wheel (31) located at the bottom and the bottom plate carrier (4) carried by the rotating wheel (31) located at the top.

4. A lifting mechanism for a plate rack on a temporary storage machine according to claim 2 or 3, characterized in that: The number of turns of the spiral guide groove (32) is greater than 2; from bottom to top, the spacing between the lower spiral surfaces between adjacent turns of the spiral guide groove (32) gradually increases, and the minimum spacing between adjacent turns of the spiral guide groove (32) is not less than the thickness of the carrier (41).

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