Linear lifting module

Abstract

The application belongs to the technical field of automatic processing, and particularly relates to a linear lifting module, which comprises a vertical lead screw, a lead screw seat movably arranged on the lead screw, and a lead screw motor for driving the lead screw to rotate; the module further comprises a hollow air shaft arranged in parallel with the lead screw, and a normally closed valve assembly arranged on the hollow air shaft and capable of being opened under pressure; the lead screw seat is provided with a through hole matched with the hollow air shaft, and the upper and lower ends of the through hole are both provided with sealing rubber sleeves matched with the hollow air shaft; a gas chamber is recessed and formed on the inner wall of the through hole, and the lead screw seat is provided with an air nozzle communicated with the gas chamber; the gas chamber is further provided with a trigger member for extruding the normally closed valve assembly to be opened when the lead screw seat is moved to a position; during operation, the cooperation of the hollow air shaft and the normally closed valve assembly can reduce the arrangement of the connecting air pipe moving together with the lead screw seat, and greatly improve the operation safety of the equipment.

Description

Technical Field

[0001] This invention relates to the field of automated processing technology, and in particular to a linear lifting module. Background Technology

[0002] Automation technology is widely used in industry, agriculture, military, scientific research, transportation, commerce, medical care, services and households. The introduction of automated equipment into production can not only reduce the human output in the production process, but also improve production efficiency and improve the productivity of mechanical production.

[0003] In the daily production process of automated equipment, lifting machinery is commonly used. However, when it is necessary to adhere and fix workpieces during transportation or to add cylinder modules for clamping, existing lifting equipment cannot meet the requirements. Most existing lifting equipment is driven by cylinders or lead screw motors. To install negative pressure adsorption modules or cylinder modules on the moving terminals of the lifting equipment, it is necessary to run long connecting air pipes so that the connecting air pipes move synchronously with the workpieces. However, the connecting air pipes directly exposed to the environment are not only risky due to their excessive length, but also cannot meet the requirements of high-precision on-site wiring, thus affecting the safety of the workpieces. Therefore, it is necessary to improve the existing lifting equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a linear lifting module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a linear lifting module, comprising a vertically arranged lead screw, a lead screw seat movably arranged on the lead screw, and a lead screw motor for driving the lead screw to rotate on a fixed axis; the module further comprises a hollow air shaft arranged parallel to the lead screw, wherein a normally closed valve assembly that opens under pressure is provided on the hollow air shaft corresponding to its inner cavity; the lead screw seat is provided with a through hole adapted to the hollow air shaft, and sealing sleeves adapted to the hollow air shaft are provided at both the upper and lower ends of the through hole; an air chamber is recessed in the inner wall of the through hole, and an air nozzle communicating with the air chamber is provided on the lead screw seat; the air chamber is also provided with a trigger element that squeezes the normally closed valve assembly to open when the lead screw seat moves to the correct position.

[0006] The linear lifting module of the present invention further includes a mounting plate, both ends of the lead screw are rotatably connected to the mounting plate, and the upper end of the hollow air shaft is connected to an air inlet pipe, the air inlet pipe facing away from the lead screw.

[0007] The linear lifting module of the present invention includes a mounting groove longitudinally provided on the mounting plate, wherein the lead screw and the hollow air shaft are both disposed in the mounting groove, and the hollow air shaft is located on the side of the lead screw facing the bottom surface of the mounting groove; both the upper and lower ends of the lead screw penetrate the inner wall of the mounting groove.

[0008] The linear lifting module of the present invention includes a normally closed valve assembly comprising an outer sleeve radially embedded in the hollow air shaft and a movable shaft coaxially slidably disposed within the outer sleeve; a sealing plate is provided inside the hollow air shaft to seal the outer sleeve, the sealing plate being located inside the hollow air shaft and connected to the movable shaft, one end of the movable shaft opposite to the sealing plate extending out of the hollow air shaft, and an air passage is provided on the side wall of the movable shaft on the side of the sealing plate facing the movable shaft, the air passage extending through the movable shaft and extending out of the end face of the outer sleeve; the normally closed valve assembly further includes an elastic reset member for resetting the movable shaft.

[0009] The trigger is elongated and vertically disposed in the air chamber. The movable shaft is located on the moving trajectory of the trigger. When the lead screw seat moves into position, the sealing plate is pushed away from the outer sleeve by the trigger.

[0010] In the linear lifting module of the present invention, the end face of the movable shaft extending out of the outer sleeve is provided with an arc-shaped protrusion, and the upper and lower end faces of the lead screw seat are provided with guide slopes corresponding to the arc-shaped protrusion.

[0011] The linear lifting module of the present invention includes an outer cylinder body and an inner cylinder body coaxially disposed within the outer cylinder body; a fixing step for fixing the inner cylinder body is provided on the inner wall of the outer cylinder body, the fixing step passing through one end of the outer cylinder body facing the sealing plate, and an elastic reset member disposed between the outer cylinder body and the inner cylinder body; when assembled in place, the inner walls of both the outer cylinder body and the inner cylinder body slide against the side wall of the movable shaft.

[0012] The linear lifting module of the present invention, wherein the movable shaft is circumferentially distributed with a plurality of sealing rings, the sealing rings being located within the inner cylinder body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: By connecting the hollow air shaft to an external air source device and setting the normally closed valve assembly at a preset position on the hollow air shaft, when the lead screw seat moves along the hollow air shaft to the preset position, the normally closed valve assembly is triggered to open, thereby connecting the hollow air shaft and the air nozzle through the normally closed valve assembly. This makes it easier for operators to set up the corresponding negative pressure module or air pipe module on the lead screw seat with only a very short connecting air pipe, greatly reducing the length of the connecting air pipe and lowering the risk of accidental damage to the connecting air pipe during the movement of the lead screw seat, thus greatly increasing the operational safety of the equipment. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a longitudinal sectional view of the structure of the present invention.

[0016] Figure 2 yes Figure 1 A magnified view of the local structure.

[0017] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0018] Figure 4 This is an internal structural diagram of the normally closed valve assembly of the present invention.

[0019] Figure 5 This is a state diagram of the normally closed valve assembly triggered by the triggering element of the present invention. Detailed Implementation

[0020] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0025] This embodiment discloses, as follows: Figures 1 to 5The linear lifting module shown includes a vertically arranged lead screw 10, a lead screw seat 20 movably mounted on the lead screw 10, and a lead screw motor 30 that drives the lead screw 10 to rotate on a fixed axis. The module also includes a hollow air shaft 40 arranged parallel to the lead screw 10, with a normally closed valve assembly 50 that opens under pressure corresponding to its inner cavity. The lead screw seat 20 has a through hole 60 adapted to the hollow air shaft 40, and sealing sleeves 70 adapted to the hollow air shaft 40 are provided at both the upper and lower ends of the through hole 60. An air chamber 601 is recessed into the inner wall of the through hole 60. When the lead screw seat 20 moves, the sealing sleeves 70 seal the air chamber 601 to prevent air leakage. The lead screw seat 20 has an air nozzle 80 communicating with the air chamber 601 for connecting a negative pressure module or an air pipe module on the lead screw seat 20. The air chamber 601 is also equipped with a trigger 90 that opens the normally closed valve assembly 50 when the lead screw seat 20 moves to the desired position. During installation, the hollow air shaft 40 is connected to an external air source device. By setting the normally closed valve assembly 50 in a preset position on the hollow air shaft 40, when the lead screw seat 20 moves to the preset position along the hollow air shaft 40, the normally closed valve assembly 50 is triggered to open, thereby connecting the hollow air shaft 40 and the air nozzle 80 through the normally closed valve assembly 50. This allows operators to easily connect the corresponding negative pressure module or air pipe module to the lead screw seat 20 using only a short connecting air pipe, greatly reducing the length of the connecting air pipe and lowering the risk of accidental damage to the connecting air pipe during the movement of the lead screw seat 20, thus significantly increasing the operational safety of the equipment.

[0026] In this embodiment, the module also includes a mounting plate 100. Both the upper and lower ends of the lead screw 10 are rotatably connected to the mounting plate 100. The upper end of the hollow air shaft 40 is connected to an air inlet pipe 110. The air inlet pipe 110 faces the side away from the lead screw 10 so as to facilitate connection with an external air source device.

[0027] In this embodiment, a mounting groove 120 is longitudinally provided on one side wall of the mounting plate 100. Both the lead screw 10 and the hollow air shaft 40 are disposed within the mounting groove 120, with the hollow air shaft 40 located on the side of the lead screw 10 facing the bottom surface of the mounting groove 120. Both the upper and lower ends of the lead screw 10 penetrate the inner wall of the mounting groove 120. The mounting groove 120 serves a protective purpose, preventing scratches on the surface of the hollow air shaft 40.

[0028] In this embodiment, the normally closed valve assembly 50 includes an outer sleeve 51 radially embedded in the hollow air shaft 40, and a movable shaft 52 coaxially slidably disposed within the outer sleeve 51. When assembled, the outer sleeve 51 is flush with the outer surface of the hollow air shaft 40 to avoid obstructing the sealing sleeve 70. A sealing plate 130 is provided inside the hollow air shaft 40 to seal the outer sleeve 51, and a sealing gasket 140 is provided on the side wall of the sealing plate 130 facing the movable shaft 52 to improve sealing performance.

[0029] Furthermore, the sealing plate 130 is located inside the hollow air shaft 40 and connected to the movable shaft 52. One end of the movable shaft 52, away from the sealing plate 130, extends out of the hollow air shaft 40, so that when the lead screw 10 moves into position, the movable shaft 52 can be pressed towards the interior of the hollow air shaft 40. An air passage 521 is provided on the side wall of the movable shaft 52 on the side of the sealing plate 130 facing the movable shaft 52. The air passage 521 extends along the movable shaft 52 and passes through the end face of the outer sleeve 51. Furthermore, the normally closed valve assembly 50 also includes an elastic reset member 53 for resetting the movable shaft 52. When the lead screw seat 20 moves to the preset position, the movable shaft 52 is pressed inward, thereby opening the sealing plate 130 and connecting the air chamber 601 to the hollow air shaft 40. When the lead screw seat 20 moves away from the preset position, the movable shaft 52 is reset by the elastic reset member 53, and the sealing plate 130 remains sealed to the outer sleeve 51.

[0030] In this embodiment, the trigger 90 is elongated and vertically disposed in the air chamber 601. The movable shaft 52 is located on the moving trajectory of the trigger 90. When the lead screw seat 20 moves into place, the sealing plate 130 pushes the movable shaft 52 inward through the trigger 90 and then pushes the sealing plate 130 away from the outer sleeve 51, thereby opening the outer sleeve 51 to connect the inner cavity 401 of the hollow air shaft 40 with the air chamber 601.

[0031] In this embodiment, an arc-shaped protrusion 150 is provided on one end face of the movable shaft 52 extending out of the outer sleeve 51, and guide slopes 160 are provided on the upper and lower end faces of the lead screw seat 20 corresponding to the arc-shaped protrusion 150, so as to increase the smoothness of the movable shaft 52 being triggered and avoid the lead screw seat 20 and the movable shaft 52 from getting stuck.

[0032] In this embodiment, the outer sleeve 51 includes an outer sleeve body 511 and an inner sleeve body 512 coaxially disposed within the outer sleeve body 511. A fixing step 170 is provided on the inner wall of the outer sleeve body 511 to fix the inner sleeve body 512. The fixing step 170 passes through one end of the outer sleeve body 511 facing the sealing plate 130. An elastic reset member 53 is disposed between the outer sleeve body 511 and the inner sleeve body 512. When assembled, there is a gap between the outer sleeve body 511 and the inner sleeve body 512 sufficient to install the elastic reset member 53, and the inner walls of both the outer sleeve body 511 and the inner sleeve body 512 slide against the side wall of the movable shaft 52 to ensure the stability and airtightness of the movable shaft 52. The elastic reset member 53 can be a spring, tension spring, or elastic metal strip, etc. During installation, it only needs to be fixed at the bottom of the gap, and the sealing plate 130 can be pulled tight against the outer sleeve body 511 to seal it.

[0033] In addition, for ease of installation and maintenance, the outer cylinder body 511 and the inner cylinder body 512 are detachably connected by bolts 180.

[0034] In this embodiment, the movable shaft 52 is circumferentially distributed with multiple sealing rings 190, which are located inside the inner cylinder body 512 to further enhance the sealing of the movable shaft 52 during movement and prevent air leakage.

[0035] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A linear lifting module, the module comprising a vertically arranged lead screw, a lead screw seat movably disposed on the lead screw, and a lead screw motor for driving the lead screw to rotate along a fixed axis; characterized in that, The module also includes a hollow air shaft arranged parallel to the lead screw, with a normally closed valve assembly that opens under pressure corresponding to its inner cavity; the lead screw seat has a through hole adapted to the hollow air shaft, and sealing sleeves adapted to the hollow air shaft are provided at both the upper and lower ends of the through hole; an air chamber is recessed in the inner wall of the through hole, and an air nozzle communicating with the air chamber is provided on the lead screw seat; the air chamber also has a trigger element that squeezes the normally closed valve assembly to open when the lead screw seat moves to the correct position; The normally closed valve assembly includes an outer sleeve radially embedded in the hollow air shaft and a movable shaft coaxially slidably disposed within the outer sleeve; a sealing plate is provided inside the hollow air shaft to seal the outer sleeve, the sealing plate is located inside the hollow air shaft and connected to the movable shaft, one end of the movable shaft opposite to the sealing plate extends out of the hollow air shaft, and an air passage is provided on the side wall of the movable shaft on the side of the sealing plate facing the movable shaft, the air passage passing through the movable shaft and extending out of the end face of the outer sleeve; the normally closed valve assembly also includes an elastic reset member for resetting the movable shaft; The end face of the movable shaft extending out of the outer sleeve is provided with an arc-shaped protrusion, and the upper and lower end faces of the lead screw seat are provided with guide slopes corresponding to the arc-shaped protrusion; The trigger is elongated and vertically disposed in the air chamber. The movable shaft is located on the moving trajectory of the trigger. When the lead screw seat moves into position, the sealing plate is pushed away from the outer sleeve by the trigger.

2. The linear lifting module according to claim 1, characterized in that, The module also includes a mounting plate, and both the upper and lower ends of the lead screw are rotatably connected to the mounting plate. The upper end of the hollow air shaft is connected to an air inlet pipe, which faces the side away from the lead screw.

3. The linear lifting module according to claim 2, characterized in that, The mounting plate has a longitudinal mounting groove, and the lead screw and the hollow air shaft are both located in the mounting groove. The hollow air shaft is located on the side of the lead screw facing the bottom of the mounting groove. Both the upper and lower ends of the lead screw penetrate the inner wall of the mounting groove.

4. The linear lifting module according to claim 1, characterized in that, The outer sleeve includes an outer cylinder body and an inner cylinder body coaxially disposed within the outer cylinder body; the inner wall of the outer cylinder body is provided with a fixing step for fixing the inner cylinder body, the fixing step passing through one end of the outer cylinder body facing the sealing plate, and the elastic reset member is disposed between the outer cylinder body and the inner cylinder body; when assembled in place, the inner walls of both the outer cylinder body and the inner cylinder body slide against the side wall of the movable shaft.

5. The linear lifting module according to claim 4, characterized in that, The movable shaft has multiple sealing rings distributed circumferentially, and the sealing rings are located inside the inner cylinder body.

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