Z-axis rack lifting glue spraying structure

Abstract

The utility model discloses a kind of Z-axis rack lifting glue spraying structures, belong to packaging machinery technical field, solve the existing glue spraying device and the spacing of material between glue spraying assembly is increased due to material reduction Glue spraying error problem.It includes the external connecting plate body of being plate-shaped and being fixed by installation through-hole and external support frame, external connecting plate body one side is fixed with the drive motor of horizontal output shaft, output shaft coaxial connection cylindrical gear, gear is engaged with the rack tooth portion of vertical extension, rack tooth portion side away from tooth portion is fixed with sliding rod, sliding rod is sleeved with the sliding seat of being fixed with external connecting plate body, sliding rod lower end installs glue spraying assembly.Drive motor drives gear rotation to drive rack and sliding rod lifting, sliding seat guarantees sliding stability, can drive glue spraying assembly subsidence in real time with material reduction, always keep appropriate spacing, with the advantages of accurate adjustment, response fast, wear small, maintenance cost low.

Description

Technical Field

[0001] This utility model provides a rack and pinion lifting structure, belonging to the technical field, and particularly relates to a Z-axis rack and pinion lifting adhesive spraying structure. Background Technology

[0002] In fields such as packaging that require glue spraying, Z-axis lifting glue spraying devices are a type of equipment used to drive the glue spraying components to rise and fall vertically, thereby adapting to materials to be processed at different heights and ensuring the accuracy of glue spraying position and effect. Its core function is to adjust the distance between the glue spraying components and the materials so that the glue spraying operation can be carried out at a suitable distance to meet the process requirements for glue spraying accuracy.

[0003] Existing Z-axis lifting and spraying devices often employ cylinder-driven or screw-nut-driven structures. While cylinder-driven devices can lift and lower the spraying assembly, their stroke control precision is limited, making it difficult to adjust the height of the spraying assembly in real-time and accurately according to subtle changes in the decreasing material. This can easily lead to deviations in the spraying distance from the ideal value due to adjustment lag or insufficient precision. Screw-nut-driven structures are prone to wear and tear on the screw and nut due to long-term friction, increasing maintenance costs and difficulty. Furthermore, their slow transmission response means that as the material decreases, the spraying assembly cannot be lowered synchronously, causing the distance between the assembly and the material to gradually increase, resulting in spraying errors. Moreover, existing structures often lack stable and precise guiding components, causing the sliding rod to wobble during lifting and lowering, further affecting spraying accuracy. Unlike the device in this application, which uses gear and rack meshing transmission combined with a sliding seat to guide the sliding rod, ensuring both precise synchronization of the transmission and stable guidance of the sliding rod, allowing for real-time and precise adjustment of the spraying assembly's lowering as the material decreases. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of insufficient adjustment accuracy, delayed response, or unstable guidance in the existing Z-axis lifting glue spraying device, which leads to glue spraying errors. It provides a Z-axis rack and pinion lifting glue spraying structure, which realizes real-time and precise sinking adjustment of the glue spraying component as the material decreases through gear and rack meshing transmission and stable guiding structure.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a Z-axis rack lifting adhesive spraying structure, including an external connecting plate, a drive motor, a gear, a rack, a sliding rod, an adhesive spraying assembly, and an adjustment assembly. The external connecting plate is plate-shaped and used to fix it to an external support frame for support. It has multiple evenly distributed mounting holes. The drive motor is fixed to one side of the external connecting plate by fasteners passing through the mounting holes, and the drive motor has an output shaft extending horizontally. The gear is coaxially connected to the output shaft of the drive motor and is driven by the drive motor to rotate around a horizontal axis. This gear is a cylindrical gear, and its tooth shape matches the tooth groove shape of the rack, with the outer circumferential teeth fully meshing within the tooth groove of the rack. The rack is a vertically extending elongated metal piece with a side that meshes with the gear. The rack, on the other side, is bolted to the side of the sliding rod extending vertically. The length of the rack in the vertical direction is greater than the length of the sliding rod, and it can synchronously drive the sliding rod to move vertically as the gear rotates. The glue spraying assembly is installed at the lower end of the sliding rod and includes a rectangular glue spraying body with heat dissipation fins on the outer side wall. The glue spraying body has a glue inlet at the top and a conical glue spraying head integrally formed at the bottom for performing glue spraying operations. The adjustment assembly includes a sliding seat that is sleeved on the outside of the sliding rod and fixed to the external connecting plate. The sliding seat and the sliding rod are engaged to ensure the stability of the sliding rod during the lifting process.

[0006] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0007] This invention provides stable support through an external connecting plate, and drives a motor to drive a gear and rack for precise lifting and lowering of the sliding rod and the glue spraying assembly, solving the problem of insufficient adjustment accuracy in existing devices. The fixed connection between the rack and the sliding rod, and the engaging guide of the sliding seat, ensure stable lifting and lowering of the glue spraying assembly without shaking, avoiding glue spraying errors caused by unstable guidance. The gear and rack transmission responds quickly and can drive the glue spraying assembly to sink in real time as the material decreases, always maintaining a suitable distance between the glue spraying assembly and the material, effectively eliminating glue spraying errors caused by changes in distance. Moreover, the structure is simple, wear is minimal, and maintenance costs are reduced.

[0008] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of the Z-axis rack and pinion lifting adhesive spraying structure of this utility model;

[0010] Figure 2This is an exploded view of the rack assembly of the Z-axis rack lifting and spraying adhesive structure of this utility model;

[0011] Figure 3 This is a partial view of the glue spraying assembly of the Z-axis rack and pinion lifting glue spraying structure of this utility model;

[0012] Figure 4 This is a three-dimensional schematic diagram of the external connecting plate of the Z-axis rack and pinion lifting adhesive spraying structure of this utility model;

[0013] Figure 5 This is a schematic diagram of the rack meshing of the Z-axis rack lifting and spraying adhesive structure of this utility model.

[0014] As shown in the figure:

[0015] 1. External connecting plate; 2. Drive motor; 3. Gear; 4. Rack; 5. Sliding rod; 6. Glue spraying assembly; 7. Adjustment assembly; 8. Sliding seat. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] like Figures 1 to 5 As shown, the Z-axis rack and pinion lifting adhesive spraying structure of this utility model includes an external connecting plate 1, a drive motor 2, a gear 3, a rack 4, a sliding rod 5, an adhesive spraying assembly 6, and an adjustment assembly 7.

[0020] The external connecting plate 1 is a rectangular plate structure made of high-strength alloy. It is bolted to the external support frame through four mounting holes on its edge to form the support base of the entire device. The drive motor 2 is a servo motor, which is fixed to the right side wall of the external connecting plate 1 by bolts passing through the mounting holes. The output shaft extends horizontally to the left to ensure stable power transmission.

[0021] Gear 3 is a cylindrical gear made of No. 45 steel. It is coaxially fixed to the output shaft of the drive motor 2 by a key connection. Its module is 2mm and the number of teeth is 20. The gear teeth are hardened to improve wear resistance. Rack 4 is a long strip of carbon steel with a length of 500mm. It is arranged vertically. Its left side is machined with teeth that are compatible with gear 3. The tooth pitch matches the module of gear 3. Its right side is fixed to the left side wall of sliding rod 5 by 4 M8 bolts. The length of rack 4 is greater than the 300mm length of sliding rod 5 to ensure that sliding rod 5 has sufficient lifting stroke.

[0022] The sliding rod 5 is a cylindrical alloy rod with a diameter of 30mm, extending vertically. Its lower end is bolted to the glue spraying assembly 6 via a flange. The glue spraying assembly 6 has a rectangular aluminum alloy body, 100mm long, 80mm wide, and 120mm high. Ten heat dissipation fins with a thickness of 2mm are evenly distributed on the outer wall. A glue inlet with a diameter of 10mm is opened at the center of the top, which is connected to the external glue supply pipe. The lower end has an integrally formed conical glue spraying head with a cone angle of 60° and a glue nozzle diameter of 0.8mm to ensure accurate glue dispensing.

[0023] The sliding seat 8 of the adjusting component 7 is a hollow square structure made of wear-resistant cast iron. It is fixed to the lower part of the external connecting plate 1 by bolts. Its inner side has a clearance of 0.1mm with the outer wall of the sliding rod 5 to form a sliding guide and prevent radial shaking when the sliding rod 5 is raised or lowered.

[0024] During operation, the drive motor 2 receives a control signal and drives the gear 3 to rotate. The meshing transmission between the gear 3 and the rack 4 causes the rack 4 to move vertically, which in turn drives the sliding rod 5 and the glue spraying assembly 6 to rise and fall synchronously. When the material to be processed decreases due to continuous processing, the control system drives the motor 2 to rotate forward according to the material height change command. The gear 3 drives the rack 4 and the sliding rod 5 to move downward, so that the glue spraying assembly 6 sinks synchronously with the decrease of material, always keeping the distance between the glue spraying head and the material surface stable at 10-15mm, ensuring glue spraying accuracy.

[0025] In the above description, the support and drive transmission part of the Z-axis rack and pinion lifting adhesive spraying structure mainly includes a plate-shaped external connecting plate 1, which is fixedly connected to the external support frame through multiple evenly distributed mounting through holes to provide overall support. The drive motor 2 is fixed to one side of the external connecting plate 1 by fasteners passing through these mounting through holes and has an output shaft extending in the horizontal direction. The gear 3, which is coaxially connected to the output shaft of the drive motor 2, is a cylindrical gear. Its tooth shape is adapted to the tooth groove shape of one side of the vertically extending rack 4, and the outer peripheral teeth of the gear 3 are fully engaged in the tooth groove of the rack 4. It is driven by the drive motor 2 to rotate around the horizontal axis, thereby driving the rack 4 to move in the vertical direction.

[0026] In this implementation scheme, the external connecting plate 1 forms a rigid support foundation through a fixed connection with the external support frame via mounting through holes, ensuring that components such as the drive motor 2 and gear 3 do not loosen or shift during operation. The tight connection between the drive motor 2 and the external connecting plate 1 ensures the coaxiality of its output shaft and gear 3, preventing eccentric wobbling during transmission. The tooth shapes of gear 3 and rack 4 are matched and fully meshed, ensuring zero backlash in their transmission, allowing the rotational motion of the drive motor 2 to be precisely converted into the vertical linear motion of rack 4. From the implementation points, this part achieves stability in power transmission and precision in motion conversion through rigid support and zero-backlash meshing transmission. From an innovation perspective, compared to the low precision of existing cylinder drives or the high wear of lead screw drives, the meshing structure of gear 3 and rack 4 not only has high transmission efficiency and fast response speed, but also exhibits low wear over long-term use, maintaining stable transmission precision. In addressing the issue of glue spraying errors, the stable support of the external connecting plate 1 prevents overall structural swaying from interfering with glue spraying positioning. The precise control of the drive motor 2, combined with the backlash-free transmission of the gear 3 and rack 4, allows the rack 4 to drive subsequent components downwards in real time according to the material reduction, ensuring timely and accurate adjustment of the distance between the glue spraying assembly and the material. This eliminates glue spraying errors caused by adjustment lag or insufficient precision from the transmission source.

[0027] In actual installation, the external support frame adopts a rectangular frame structure welded from existing steel profiles. The external connecting plates are secured to the frame's vertical beams via M10 expansion bolts through their mounting holes, ensuring the connection strength meets overall load-bearing requirements. The drive motor uses an existing servo driver and PLC control system. The servo driver is connected to the drive motor via a power cable, while the PLC control system is connected to the servo driver and sensors on the external material conveyor line via signal cables. The drive motor rotation angle parameters corresponding to different material stacking heights are pre-programmed into the PLC. The glue supply system for the glue spraying assembly uses an existing electric glue pump and a stainless steel glue storage tank. The glue pump inlet is connected to the bottom outlet of the glue storage tank via a pipe with a filter screen, and the outlet is sealed to the glue inlet of the glue spraying assembly via a high-pressure resistant polyurethane hose. The top of the glue storage tank has a feeding port with a breather valve. During operation, the external material conveyor line will... The adhesive material is conveyed to the bottom of the adhesive spraying assembly. A diffuse reflection photoelectric sensor installed next to the conveyor line detects the material and sends a signal to the PLC. The PLC first controls the adhesive supply pump to start, pressurizing the adhesive in the storage tank and delivering it to the spraying head for spraying. At the same time, an infrared distance sensor installed on the side of the adhesive spraying assembly monitors the distance between the spraying head and the material surface in real time and feeds the data back to the PLC. When the material gradually decreases due to the adhesive spraying process, causing the distance to exceed the preset value, the PLC immediately sends a command to the servo driver. The servo driver drives the motor to run, and through the meshing of gears and racks, it drives the sliding rod and the adhesive spraying assembly to sink until the distance returns to the preset range. Then the motor stops, and the adhesive supply pump continues to supply adhesive to complete the subsequent adhesive spraying operation. After the material is sprayed, the conveyor line sends the material away. When the sensor can no longer detect the material, the PLC controls the adhesive supply pump to stop, and the motor reverses to drive the adhesive spraying assembly back to the initial position, waiting for the next batch of material to enter.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A Z-axis rack and pinion lifting adhesive spraying structure, characterized in that, include: The external connecting plate (1) is plate-shaped and is used to fix it to the external support frame to provide support; The drive motor (2) is installed on one side of the external connecting plate (1) and has an output shaft extending in the horizontal direction; The gear (3) is coaxially connected to the output shaft of the drive motor (2) and is driven by the drive motor (2) to rotate around the horizontal axis; A vertically extending rack (4) has teeth on one side, which mesh with the gear (3) so that the rack (4) moves vertically when the gear (3) rotates; The sliding rod (5) extends vertically and is fixedly connected to the side of the rack (4) away from the teeth, and moves vertically synchronously with the rack (4); The glue spraying assembly (6) is installed at the lower end of the sliding rod (5) and is used to perform glue spraying operations; The adjustment assembly (7) includes a sliding seat (8) sleeved on the outside of the sliding rod (5) and fixedly connected to the external connecting plate (1), wherein the sliding seat (8) and the sliding rod (5) are engaged accordingly.

2. The Z-axis rack and pinion lifting adhesive spraying structure according to claim 1, characterized in that, The external connecting plate (1) has a plurality of evenly distributed mounting through holes, and the drive motor (2) is fixed to the surface of the external connecting plate (1) by fasteners passing through the mounting through holes.

3. The Z-axis rack and pinion lifting adhesive spraying structure according to claim 1, characterized in that, The gear (3) is a cylindrical gear (3), the shape of the gear teeth (3) is adapted to the shape of the tooth groove of the rack (4), and the outer peripheral teeth of the gear (3) are fully engaged in the tooth groove of the rack (4).

4. The Z-axis rack and pinion lifting adhesive spraying structure according to claim 1, characterized in that, The rack (4) is a long strip of metal, and its length extending in the vertical direction is greater than that of the sliding rod (5) in the vertical direction. The rack (4) is fixed to the side of the sliding rod (5) by bolts.

5. The Z-axis rack and pinion lifting adhesive spraying structure according to claim 1, characterized in that, The glue spraying assembly (6) includes a cuboid-shaped glue spraying body with heat dissipation fins on its outer side wall. The upper part of the glue spraying body has a glue inlet, and the lower end of the glue spraying body is integrally formed with a conical glue spraying head.

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