Flexible welding clamp for lifting vertical cylinder of drying machine

Abstract

The invention provides a dryer lifting vertical cylinder flexible welding clamp which comprises a rack, a positioning device, a transverse sliding device and a guide rail assembly, the positioning device comprises two positioning mechanisms, each positioning mechanism comprises a positioning assembly and a lead screw sliding block mechanism, and the transverse sliding device comprises a connecting rod and two sliding assemblies. Each sliding assembly comprises a bracket assembly and a supporting assembly. The two positioning assemblies are matched with the lead screw sliding block mechanism to achieve flexible sliding in the longitudinal direction, the positioning distance can be rapidly adjusted according to workpieces of different length specifications, the adaptability of the clamp is remarkably improved, and the multi-variety and small-batch production requirements are met. And through sliding fit of the bracket assembly and the supporting assembly, stable and efficient transverse demolding and transferring after workpiece welding are completed are achieved, positioning accuracy and transferring convenience are overall considered, it is ensured that in the batch production process, the workpiece size consistency is high, the machining process is coherent and efficient, and reliable guarantee is provided for large-scale production.

Description

Technical Field

[0001] This invention relates to the field of drying mechanism fixture technology, and in particular to a flexible welding fixture for a dryer lifting cylinder. Background Technology

[0002] As a core load-bearing and transmission component in drying equipment, the structural integrity and dimensional accuracy of the dryer lifting cylinder directly affect the operational stability, material transfer efficiency, and overall service life of the drying equipment. It has wide applications in various fields such as agricultural machinery, grain processing, and industrial drying. Currently, the welding of dryer lifting cylinders in the industry mostly adopts a manual, free-assembly welding method, lacking dedicated precision positioning and auxiliary transfer equipment, resulting in numerous technical challenges during the processing.

[0003] In existing technologies, traditional welding fixtures are mostly rigid structures with fixed specifications, which can only accommodate lifting cylinder workpieces of a single length and size. When processing workpieces of different specifications, the entire fixture must be replaced or complex modifications must be made. This is not only cumbersome and time-consuming, but also increases the investment cost of production equipment. Furthermore, their versatility is extremely poor, making it difficult to meet the production needs of multiple varieties and small batches. Regarding positioning accuracy, traditional processing relies on manual calibration of the workpiece position, resulting in vague positioning references and a lack of stable guiding and locking mechanisms. This causes the workpiece to easily shift during welding, leading to misalignment of weld joints, excessive dimensional deviations, poor consistency in batch production, and frequent problems such as excessive clearances and assembly difficulties during subsequent assembly, seriously affecting the overall operating performance of the drying equipment.

[0004] Therefore, it is necessary to propose a flexible welding fixture for the lifting cylinder of a dryer to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide a flexible welding fixture for the lifting cylinder of a dryer, so as to solve the problem of poor adaptability caused by the inability of existing fixtures to adapt to workpieces of different specifications.

[0006] To achieve the above objectives, the present invention provides a flexible welding fixture for a dryer lifting cylinder, comprising a frame, a positioning device, a transverse sliding device, and a guide rail assembly; wherein, The guide rail assembly extends longitudinally and is fixed to the frame; The positioning device includes two positioning mechanisms arranged opposite each other along the longitudinal direction. Each positioning mechanism includes a positioning component and a lead screw and slider mechanism. The positioning component is slidably mounted on the guide rail assembly along the longitudinal direction. The positioning component is connected to the lead screw and slider mechanism. The lead screw and slider mechanism is slidably connected to the frame to drive the positioning component to slide along the longitudinal direction. The lateral sliding device includes a connecting rod and two sliding components arranged opposite each other in the longitudinal direction. Each sliding component includes a bracket assembly and a support assembly. The bracket assembly extends laterally and is connected to the frame. The support assembly is slidably connected to the bracket assembly in the lateral direction. The two support assemblies are connected by the connecting rod. The top of the support assembly is used for placing the workpiece.

[0007] Preferably, the guide rail assembly includes two longitudinal guide rails arranged laterally opposite each other, the two longitudinal guide rails are connected to both sides of the frame, and the positioning component is slidably mounted on the longitudinal guide rails.

[0008] Preferably, the positioning component includes a positioning seat, wherein the positioning seat has slide rails protruding downward on both sides of its bottom along the lateral direction, and the slide rails are recessed to form slide grooves. The slide rails are slidably connected to the longitudinal guide rails by passing through the slide grooves.

[0009] Preferably, the positioning component further includes a clamping member, and slots are provided on both sides and the top of the positioning seat. The clamping member is detachably clamped in the slots of the positioning seat to clamp the positioning seat and the workpiece together.

[0010] Preferably, the lead screw and slider mechanism includes a lead screw, a lead sleeve, and two fixed seats arranged longitudinally opposite each other. The fixed seats are connected to the frame, and each fixed seat has a built-in bearing. The two ends of the lead screw are respectively connected to the bearings of the two fixed seats and are rotatably arranged. The lead sleeve is threadedly connected to the lead screw, and the positioning seat is connected to the lead sleeve.

[0011] Preferably, each of the bracket assemblies includes a bracket and a flow strip, the bracket being fixed to the frame, the flow strip extending laterally and connected to the bracket, and the flow strip being disposed above the longitudinal guide rail, and the support assembly being slidably connected laterally to the flow strip.

[0012] Preferably, each of the support components includes a slide plate and two pads spaced laterally, the slide plate being slidably connected to the flow strip, the pads being connected to the slide plate, and the connecting rod connecting the two slide plates.

[0013] Preferably, each of the support components further includes a side stop roller that is rotatably mounted, and the inner and outer side walls of the slide are both connected to the side stop roller.

[0014] Preferably, there are two connecting rods, which are spaced apart laterally.

[0015] Preferably, the lead screw and slider mechanism further includes a rocker arm, wherein the end of the lead screw away from the workpiece extends out of the fixed base, and the rocker arm is connected to the extended end of the lead screw.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a flexible welding fixture for a dryer lifting cylinder, comprising a frame, a positioning device, a transverse sliding device, and a guide rail assembly. The guide rail assembly extends longitudinally and is fixed to the frame. The positioning device includes two positioning mechanisms arranged opposite each other longitudinally. Each positioning mechanism includes a positioning component and a screw-slider mechanism. The positioning component is slidably mounted on the guide rail assembly longitudinally and connected to the screw-slider mechanism. The screw-slider mechanism is slidably connected to the frame to drive the positioning component to slide longitudinally. The transverse sliding device includes a connecting rod and two sliding components arranged opposite each other longitudinally. Each sliding component includes a bracket assembly and a support assembly. The bracket assembly extends transversely and is connected to the frame. The support assembly is slidably connected transversely to the bracket assembly. The two support assemblies are connected by a connecting rod. The top of the support assembly is used for placing the workpiece. Two positioning components, in conjunction with a lead screw and slider mechanism, enable flexible longitudinal sliding, allowing for rapid adjustment of the positioning spacing according to workpieces of different lengths and specifications. This significantly improves the adaptability of the fixture and meets the production needs of multiple varieties and small batches. Furthermore, the sliding cooperation between the bracket and support components enables smooth and efficient lateral demolding and transfer of workpieces after welding. Overall, the fixture balances positioning accuracy with convenient transfer, ensuring high workpiece dimensional consistency and a smooth and efficient processing flow during mass production, thus providing a reliable guarantee for large-scale production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 This is a side view of the overall structure in one embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the positioning mechanism in one embodiment of the present invention; Figure 4 This is a perspective view of a lateral sliding device according to one embodiment of the present invention.

[0019] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] Explanation of icon numbers: 10. Frame; 20. Positioning device; 210. Positioning assembly; 211. Positioning seat; 212. Slide rail; 213. Clamping component; 220. Lead screw and slider mechanism; 221. Lead screw; 222. Lead sleeve; 223. Fixed seat; 224. Bearing; 225. Handle; 30. Lateral sliding device; 310. Connecting rod; 320. Bracket assembly; 321. Bracket; 322. Flow strip; 330. Support assembly; 331. Slide plate; 332. Pad; 333. Side roller; 40. Guide rail assembly; 410. Longitudinal guide rail. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0025] Please see the appendix Figure 1-4This invention provides a flexible welding fixture for a dryer lifting cylinder according to one embodiment, comprising a frame 10, a positioning device 20, a transverse sliding device 30, and a guide rail assembly 40. First, it should be noted that in this application, "longitudinal" refers to the length direction of the frame 10, and "transverse" refers to the width direction of the frame 10. Please refer to the accompanying drawings for details; the specific design is as follows: The guide rail assembly 40 extends longitudinally and is fixed to the frame 10; the positioning device 20 includes two positioning mechanisms arranged opposite each other longitudinally, each positioning mechanism including a positioning component 210 and a lead screw 221 slider mechanism 220. The positioning component 210 is slidably mounted on the guide rail assembly 40 longitudinally and is connected to the lead screw 221 slider mechanism 220. The lead screw 221 slider mechanism 220 is slidably connected to the frame 10 to drive the positioning component 210 to slide longitudinally; the transverse sliding device 30 includes a connecting rod 310 and two sliding components arranged opposite each other longitudinally. Each sliding component includes a bracket assembly 320 and a support assembly 330. The bracket assembly 320 extends transversely and is connected to the frame 10. The support assembly 330 is slidably connected transversely to the bracket assembly 320. The two support assemblies 330 are connected by the connecting rod 310. The top of the support assembly 330 is used for placing the workpiece.

[0026] Specifically, the flexible welding fixture for the dryer lifting cylinder in this application includes a frame 10, a positioning device 20, a transverse sliding device 30, and a guide rail assembly 40. The frame 10 is used for the installation and connection of various devices and components. The positioning device 20 is used for positioning the workpiece. It adopts two positioning mechanisms arranged opposite each other along the longitudinal direction, which, together with the lead screw 221, slider mechanism 220, and guide rail assembly 40, realize the flexible sliding of the positioning assembly 210 along the longitudinal direction. This allows the fixture to quickly adjust the positioning distance according to workpieces of different lengths and specifications, breaking the limitation of traditional rigid fixtures that can only adapt to workpieces of a single size. This significantly improves the flexible adaptability of the fixture and meets the needs of multi-variety and small-batch production. The transverse sliding device 30 facilitates the demolding and transfer of workpieces after welding. It connects two support components 330 through a connecting rod 310 to form a synchronous and linked transfer structure. With the sliding cooperation of the bracket component 320 and the support component 330, it realizes stable and efficient transverse demolding and transfer of workpieces after welding, replacing the traditional manual handling or external lifting equipment assistance method. This reduces labor intensity and avoids collision damage during workpiece transfer. The overall structural design takes into account both positioning accuracy and transfer convenience, ensuring high consistency of workpiece size and smooth and efficient processing flow during mass production, providing a reliable guarantee for large-scale production.

[0027] In a preferred embodiment of the present invention, the guide rail assembly 40 includes two longitudinal guide rails 410 arranged laterally opposite each other, the two longitudinal guide rails 410 are connected to both sides of the frame 10, and the positioning assembly 210 is slidably mounted on the longitudinal guide rails 410.

[0028] It should be noted that the longitudinal guide rail 410 provides a stable and accurate longitudinal sliding reference for the positioning component 210: the longitudinal guide rails 410, which are symmetrically distributed on both sides, can bear the weight of the positioning component 210 and the workpiece in an even manner, avoiding sliding offset caused by uneven force on one side of the guide rail, ensuring the straightness of the positioning component 210 when moving longitudinally, thereby improving the coaxiality and dimensional accuracy of the workpiece positioning. At the same time, the layout of the dual guide rails enhances the overall load-bearing capacity and structural stability of the guide rail component 40.

[0029] In a preferred embodiment of the present invention, the positioning component 210 includes a positioning seat 211. The positioning seat 211 has slide rails 212 protruding downward on both sides of its bottom along the lateral direction. The slide rails 212 are recessed to form slide grooves. The slide rails 212 are slidably connected to the longitudinal guide rail 410 by passing through the slide grooves.

[0030] It is important to note that the embedded design of the slide groove and the longitudinal guide rail 410 can limit the displacement of the positioning component 210 in the lateral direction, avoiding positional shifts caused by lateral swaying during workpiece positioning or welding, and ensuring the stability of the positioning reference. At the same time, the slide rail 212 has a larger contact area with the guide rail through the slide groove, resulting in more even force distribution during sliding, reducing localized wear, improving the smoothness of sliding, and making the position adjustment of the positioning component 210 more effortless and efficient.

[0031] In a preferred embodiment of the present invention, the positioning component 210 further includes a clamping member 213. The positioning seat 211 has slots on both sides and the top. The clamping member 213 is detachably clamped in the slots of the positioning seat 211 to clamp the positioning seat 211 and the workpiece.

[0032] It is worth noting that the detachable clamping component 213 can be flexibly adjusted in installation position or replaced with a suitable model according to the workpiece's shape, size, and structural characteristics, adapting to the clamping requirements of different specifications of dryer lifting cylinders. This eliminates the need for a complete replacement of the clamping fixture, significantly reducing equipment investment costs for multi-variety production. The slot design provides a precise installation reference for the clamping component 213, ensuring a firm connection between the clamping component 213 and the positioning seat 211. This prevents workpiece displacement due to loose clamping during welding, thereby ensuring the alignment accuracy of the weld joint and the consistency of workpiece dimensions.

[0033] In a preferred embodiment of the present invention, the lead screw 221 slider mechanism 220 includes a lead screw 221, a lead sleeve 222, and two fixed seats 223 arranged longitudinally opposite each other. The fixed seats 223 are connected to the frame 10. Each fixed seat 223 has a built-in bearing 224. The two ends of the lead screw 221 are respectively connected to the bearings 224 of the two fixed seats 223 and are rotatably arranged. The lead sleeve 222 is threadedly connected to the lead screw 221, and the positioning seat 211 is connected to the lead sleeve 222.

[0034] It is worth noting that the fixed base 223 provides a stable mounting support for the lead screw 221, and the built-in bearing 224 effectively reduces the frictional resistance during the rotation of the lead screw 221, making its rotation smoother and reducing the labor intensity of manual adjustment. At the same time, the bearing 224 prevents direct wear between the lead screw 221 and the fixed base 223, extending the service life of the transmission mechanism. The threaded drive between the lead screw 221 and the threaded sleeve 222 has high-precision displacement transmission characteristics, enabling micro-adjustments of the positioning component 210 along the longitudinal direction, ensuring that the workpiece positioning accuracy meets processing requirements, and solving the problem of insufficient positioning accuracy in traditional manual calibration. Furthermore, the threaded drive structure has a self-locking function; once the positioning component 210 is adjusted to the correct position, it can lock itself, preventing positional displacement due to external forces during welding and ensuring positioning stability.

[0035] Furthermore, each of the bracket assemblies 320 includes a bracket 321 and a flow strip 322. The bracket 321 is fixed to the frame 10, the flow strip 322 extends laterally and is connected to the bracket 321, and the flow strip 322 is disposed above the longitudinal guide rail 410. The support assembly 330 is slidably connected to the flow strip 322 laterally.

[0036] It should be noted that the flow strip 322 replaces the traditional sliding contact with rolling contact, significantly reducing the frictional resistance between the support component 330 and the bracket component 320. This makes it easier and more flexible for the support component 330 to slide the workpiece laterally, enabling rapid and stable demolding and transfer of the workpiece. The bracket 321 provides a stable mounting base for the flow strip 322, ensuring that the flow strip 322 will not deform or shift when bearing the weight of the workpiece, thus guaranteeing the stability of the transfer process. Simultaneously, the layout design of the flow strip 322 positioned above the longitudinal guide rail 410 fully utilizes the longitudinal space of the frame 10, avoids interference with the positioning device 20, and makes the overall fixture structure compact, reducing the space occupied by the equipment and improving the flexibility of the workshop production layout.

[0037] Furthermore, each of the support components 330 includes a slide plate 331 and two pads 332 arranged laterally at intervals. The slide plate 331 is slidably connected to the flow strip 322, the pads 332 are connected to the slide plate 331, and the connecting rod 310 is connected between the two slide plates 331.

[0038] It should be understood that the slide plate 331, as the core load-bearing component of the support assembly 330, forms a smooth sliding fit with the flow strip 322, providing a stable sliding foundation for workpiece transfer. The two pads 332, arranged laterally at intervals, increase the contact area between the workpiece and the slide plate 331, which can evenly distribute the weight of the workpiece and avoid excessive local pressure that could cause workpiece deformation, making it particularly suitable for processing the lifting cylinder of a thin-walled dryer. The pads 332 can be made of wear-resistant and non-slip materials, which can enhance the friction between the workpiece and the slide plate 331, prevent the workpiece from sliding and shifting during transfer, and avoid scratches caused by direct contact between the workpiece surface and the slide plate 331, ensuring the appearance quality of the workpiece. The connecting rod 310 ensures that the two support assemblies 330 slide synchronously, further improving the stability of workpiece transfer and preventing workpiece tilting due to inconsistent sliding speeds on both sides.

[0039] Furthermore, each of the support components 330 also includes a side-stop roller 333 that is rotatably disposed thereon, and the inner and outer side walls of the slide plate 331 are both connected to the side-stop roller 333.

[0040] It should be noted that the rotatable design of the side guard roller 333 allows for rolling friction between it and adjacent components, replacing the traditional sliding friction. This reduces sliding resistance, making the slide plate 331 move more flexibly, while also reducing wear between components and extending the service life of the support assembly 330.

[0041] Furthermore, there are two connecting rods 310, and the two connecting rods 310 are arranged laterally at intervals.

[0042] It should be noted that the two spaced connecting rods 310 can form a symmetrical force structure, making the connection between the two slide plates 331 more robust. This prevents a single connecting rod 310 from deforming or breaking due to concentrated force, and improves the load-bearing capacity of the support assembly 330. It is suitable for transferring heavy dryer lifting cylinder workpieces.

[0043] Furthermore, the lead screw 221 slider mechanism 220 also includes a rocker arm 225, with one end of the lead screw 221 away from the workpiece extending out of the fixed base 223, and the rocker arm 225 connected to the extended end of the lead screw 221.

[0044] Understandably, the crank handle 225 provides a convenient force-applying component for manually adjusting the lead screw 221. Operators can drive the lead screw 221 to rotate by turning the crank handle 225 without the need for additional tools, thereby driving the positioning component 210 to move longitudinally, simplifying the operation process and reducing the difficulty of operation.

[0045] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A flexible welding fixture for a dryer lifting cylinder, characterized in that, Includes a frame, positioning device, lateral sliding device, and guide rail assembly; among which, The guide rail assembly extends longitudinally and is fixed to the frame; The positioning device includes two positioning mechanisms arranged opposite each other along the longitudinal direction. Each positioning mechanism includes a positioning component and a lead screw and slider mechanism. The positioning component is slidably mounted on the guide rail assembly along the longitudinal direction. The positioning component is connected to the lead screw and slider mechanism. The lead screw and slider mechanism is slidably connected to the frame to drive the positioning component to slide along the longitudinal direction. The lateral sliding device includes a connecting rod and two sliding components arranged opposite each other in the longitudinal direction. Each sliding component includes a bracket assembly and a support assembly. The bracket assembly extends laterally and is connected to the frame. The support assembly is slidably connected to the bracket assembly in the lateral direction. The two support assemblies are connected by the connecting rod. The top of the support assembly is used for placing the workpiece.

2. The flexible welding fixture for the lifting cylinder of the dryer according to claim 1, characterized in that, The guide rail assembly includes two longitudinal guide rails arranged laterally opposite each other, the two longitudinal guide rails being connected to both sides of the frame, and the positioning component being slidably mounted on the longitudinal guide rails.

3. The flexible welding fixture for the dryer lifting cylinder according to claim 2, characterized in that, The positioning component includes a positioning seat, on which slide rails are formed by downward protrusions on both sides of the bottom of the positioning seat in the horizontal direction. The slide rails are recessed to form slide grooves, and the slide rails are slidably connected to the longitudinal guide rails by passing through the slide grooves.

4. The flexible welding fixture for the lifting cylinder of the dryer according to claim 3, characterized in that, The positioning assembly also includes a clamping member. The positioning seat has slots on both sides and top. The clamping member is detachably clamped in the slots of the positioning seat to clamp the positioning seat and the workpiece.

5. The flexible welding fixture for the lifting cylinder of the dryer according to claim 3, characterized in that, The lead screw and slider mechanism includes a lead screw, a lead sleeve, and two fixed seats arranged longitudinally opposite each other. The fixed seats are connected to the frame, and each fixed seat has a built-in bearing. The two ends of the lead screw are respectively connected to the bearings of the two fixed seats and are rotatably arranged. The lead sleeve is threadedly connected to the lead screw, and the positioning seat is connected to the lead sleeve.

6. The flexible welding fixture for the lifting cylinder of the dryer according to claim 2, characterized in that, Each of the bracket assemblies includes a support and a flow strip, the support being fixed to the frame, the flow strip extending laterally and connected to the support, and the flow strip being disposed above the longitudinal guide rail, and the support assembly being laterally slidably connected to the flow strip.

7. The flexible welding fixture for the dryer lifting cylinder according to claim 6, characterized in that, Each of the support components includes a slide plate and two pads spaced laterally, the slide plate being slidably connected to the flow strip, the pads being connected to the slide plate, and the connecting rod connecting the two slide plates.

8. The flexible welding fixture for the lifting cylinder of the dryer according to claim 7, characterized in that, Each of the support components also includes a side stop roller that is rotatably mounted, and the inner and outer side walls of the slide are connected to the side stop roller.

9. The flexible welding fixture for the lifting cylinder of the dryer according to claim 7, characterized in that, The number of connecting rods is two, and the two connecting rods are arranged at a lateral interval.

10. The flexible welding fixture for the lifting cylinder of the dryer according to claim 5, characterized in that, The lead screw and slider mechanism also includes a rocker arm, with the end of the lead screw away from the workpiece extending out of the fixed base, and the rocker arm connected to the extended end of the lead screw.

Images