A fixing device for spiral blade welding

Abstract

The present invention discloses a fixing device for spiral blade welding, which includes a shaft body fixing mechanism for fixing the shaft body of the spiral blade, and also includes a base, a baffle assembly, a transmission assembly and a pushing mechanism; there are two groups of baffle assemblies which are relatively arranged on the base, and the two baffle assemblies can respectively abut against the two ends of the spiral blade; the transmission assembly is rotatably arranged on the base, there are multiple groups of pushing mechanisms, one end of the pushing mechanism is movably arranged on the transmission assembly, and the other end abuts against the side surface of the spiral blade. The rotation of the transmission assembly can drive the pushing mechanism to move, and the pushing of the pushing mechanism can drive the blade of the spiral blade to rotate at the same angular velocity as the shaft body. The above-mentioned fixing device for spiral blade welding can eliminate the pre-welding spot welding process, so that the spiral blade rotates with the rotation of the shaft body when fixed at both sides during welding, making the machine welding more convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of production and processing of spiral blades, and specifically relates to a fixing device for welding spiral blades. Background Art

[0002] Spiral blades are mainly used for transporting materials with high viscosity and compressibility. This spiral surface type has the functions of stirring and mixing materials while completing the transportation operation.

[0003] Generally, spiral blades need to be welded and processed on corresponding shafts for use. Spiral blades and shafts are usually produced separately and fixed together by welding after production. When factories perform welding, since the spiral blade is sleeved on the surface of the shaft, displacement of the spiral blade will occur when using traditional welding robots for welding. Therefore, it is usually necessary to manually spot-weld the spiral blade for preliminary fixing, and then fix the welded spiral blade and shaft through a three-jaw chuck, and then use a welding robot to complete the welding, resulting in a more cumbersome welding process. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a fixing device for welding spiral blades to solve the technical problem mentioned in the above background art that the spiral blade will displace during welding when directly sleeved on the shaft and needs to be fixed to the shaft before welding.

[0005] To achieve the foregoing invention purpose, the technical solutions adopted by the present invention include:

[0006] A fixing device for welding spiral blades includes a shaft fixing mechanism for fixing the spiral blade shaft, and also includes a base, a baffle assembly, a transmission assembly, and a pushing mechanism;

[0007] There are two groups of the baffle assemblies, which are oppositely arranged on the base, and the two baffle assemblies can respectively abut against both ends of the spiral blade;

[0008] The transmission assembly is rotatably arranged on the base. There are multiple groups of the pushing mechanisms. One end of the pushing mechanism is movably arranged on the transmission assembly, and the other end abuts against the side surface of the spiral blade. The rotation of the transmission assembly can drive the movement of the pushing mechanism, and the pushing of the pushing mechanism can drive the spiral blade to rotate at the same angular velocity as the shaft.

[0009] In this application, through the transmission component and the pushing mechanism, the spiral blade and the shaft body rotate at the same angular velocity, and both ends of the spiral blade are restricted by the baffle component and will not have axial displacement. Therefore, during welding, the spiral blade and the shaft body rotate together just like spot welding, which makes the welding process more labor-saving and eliminates the process of pre-spot welding fixation.

[0010] Further, the pushing mechanism includes a moving seat, a pushing component, a limiting connecting rod and a limiting plate: the moving seat is movably arranged on the transmission component, the pushing component is arranged on the moving seat and abuts against the spiral blade; the limiting plate is connected to the pushing component through the limiting connecting rod and abuts against the top or bottom end of the spiral blade. The limiting plate can further limit the radial displacement of the spiral blade, and at the same time, the limiting plate close to the ground can further provide support.

[0011] Further, the pushing mechanisms are arranged at equal intervals, and adjacent pushing mechanisms are respectively located on both sides of the shaft body. With this structure, the overall driving force on the spiral blade can be made more uniform, making the rotation of the spiral blade smoother.

[0012] Further, the pushing component includes a pushing connecting rod, a pushing base and a pushing rod; one end of the pushing connecting rod is connected to the moving seat, and the other end is connected to the pushing base. The pushing rod is arranged on the pushing base and can abut against the side surface of the spiral blade, and the limiting connecting rod is arranged on the pushing base or the pushing rod.

[0013] Further, a connecting plate is provided at a point on the pushing rod away from the pushing base, and a flexible pad is provided at one end of the connecting plate away from the pushing rod.

[0014] Further, an unlocking mechanism is also provided; the pushing rod is rotatably connected to the pushing base through a rotating shaft, a limiting groove is provided on the rotating shaft, and a limiting rod is also slidably arranged on the pushing base. The limiting rod can be inserted into the limiting groove to limit the rotation of the rotating shaft; the unlocking mechanism is arranged on the base, and the unlocking mechanism can move the limiting rod away from the rotating shaft and then make the pushing rod rotate away from the shaft body. Through the extrusion of the unlocking mechanism, the limiting rod is moved away from the limiting groove, and then by extruding the pushing rod, the pushing rod rotates axially along the rotating shaft and away from the shaft body, thereby avoiding interference between the pushing mechanism and the baffle component during the movement process.

[0015] Further, a pushing groove with an inclined surface is provided on the limiting rod. The unlocking mechanism includes a fixing frame, an unlocking connecting plate, an unlocking push rod, and a rotating push plate. The fixing frame is fixedly arranged on the base. The unlocking connecting plate is fixedly arranged on the fixing frame. The unlocking push rod is fixedly arranged on the unlocking connecting plate and can slide the limiting rod away from the rotating shaft direction by pressing the inclined surface of the pushing groove. The rotating push plate is obliquely arranged on the unlocking connecting plate and can rotate the push rod and move it away from the spiral blade by pressing the push rod. There are two groups of unlocking connecting plates and rotating push rods, which are respectively located corresponding to the pushing mechanisms on the upper and lower sides.

[0016] Further, the baffle assembly includes a baffle link and a baffle body. The baffle link is detachably fixed on the base. The baffle body is detachably fixed on the baffle link. The baffle body can abut against the end face of the spiral blade. The baffle body is an annular plate and can always abut against its end face during the rotation of the spiral blade.

[0017] Further, the transmission assembly includes a transmission fixing plate and a lead screw. The transmission fixing plate is fixedly arranged on the base. The lead screw is rotatably connected to the transmission fixing plate. The moving seat is movably arranged on the lead screw.

[0018] Further, a driving gear is provided at the rotating end of the shaft fixing mechanism. A driven gear is coaxially fixed on the lead screw. The driving gear and the driven gear are meshed. Thus, the meshing of the two gears realizes the rotation of the shaft, that is, the rotation of the lead screw, that is, the movement of the pushing mechanism, which can more conveniently adjust the rotation speed of the lead screw according to the rotation requirement of the shaft.

[0019] Compared with the prior art, the advantages of the present invention include:

[0020] In this application, through the transmission assembly and the pushing mechanism, the spiral blade and the shaft rotate at the same angular velocity, and the two ends of the spiral blade are restricted by the baffle assembly and will not have axial displacement. Therefore, during welding, the spiral blade and the shaft rotate together as if they were spot-welded, which makes the welding process more labor-saving and eliminates the process of pre-spot welding and fixing. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1It is the overall schematic diagram of a fixing device for spiral blade welding in the present invention;

[0023] Figure 2 It is the schematic diagram of the pushing mechanism in the present invention;

[0024] Figure 3 It is the schematic diagram of the limiting rod in the present invention;

[0025] Figure 4 It is the schematic diagram of the unlocking mechanism in the present invention.

[0026] Reference numerals:

[0027] Shaft body 10, spiral blade 11, shaft body fixing mechanism 12, base 2, baffle assembly 3, baffle connecting rod 31, baffle body 32, transmission assembly 4, transmission fixing plate 41, lead screw 42, pushing mechanism 5, moving seat 51, pushing component 52, pushing connecting rod 521, pushing base 522, pushing rod 523, connecting plate 524, flexible pad 525, limiting connecting rod 53, limiting plate 54, rotating shaft 61, limiting rod 62, pushing groove 621, unlocking mechanism 7, fixing frame 71, unlocking connecting plate 72, unlocking push rod 73, rotating push plate 74, driving gear 81, driven gear 82. Detailed implementation manners

[0028] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention through long-term research and a large number of practices. The following will further explain and illustrate the technical solution, its implementation process and principle, etc. in combination with the drawings in the embodiments of the present application and specific implementation cases.

[0029] It should be noted that the embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as a limitation to the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] In the description of the present application, terms such as "first", "second", "third" and similar words do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a quantity limitation, but rather indicate the presence of at least one. Words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0031] In the description of the present application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application. In addition, when using position terms such as both sides, outer side, upper and lower, etc., it should be understood that they are only used for easy understanding and description, considering that the structure may be oriented to other positions.

[0032] In the description of the present application, unless otherwise clearly specified and defined, the technical terms or scientific terms used should have the ordinary meaning understood by those with ordinary skills in the field to which the present application pertains. Terms such as "installed", "connected", "coupled", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] The embodiments of the present invention are intended to introduce and explain the structural composition of the fixing device for spiral blade welding and the cooperation relationship between the various component structures. Unless otherwise specified, the dimensions, materials, manufacturing processes, etc. of the various components in the fixing device for spiral blade welding in the embodiments of the present invention can be selected according to specific circumstances, and no special limitations and explanations are made here.

[0034] Furthermore, in order to enable the public to have a better understanding of the present invention, in the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details.

[0035] Please refer to Figures 1 - 4, this embodiment provides a fixing device for welding a spiral blade 11, which includes a shaft body fixing mechanism for fixing the shaft body 10 of the spiral blade 11, and also includes a base 2, a baffle component 3, a transmission component 4 and a pushing mechanism 5;

[0036] There are two sets of baffle components 3 which are relatively arranged on the base 2, and the two baffle components 3 can respectively abut against both ends of the spiral blade 11; it should be understood that the spiral blade 11 always abuts against the baffle component 3 during rotation, and by abutting against both ends of the spiral blade 11 with the two baffle components 3, the baffle component 3 is restricted from moving axially on its shaft body 10.

[0037] The transmission component 4 is rotatably arranged on the base 2, there are multiple sets of pushing mechanisms 5, one end of the pushing mechanism 5 is movably arranged on the transmission component 4, and the other end abuts against the side surface of the spiral blade 11. The rotation of the transmission component 4 can drive the pushing mechanism 5 to move, and the pushing of the pushing mechanism 5 can drive the blades of the spiral blade 11 to rotate at the same angular velocity as the shaft body 10. It should be understood that the spiral blade 11 referred to in this application is a continuous type, the spiral blade 11 is sleeved on the shaft body 10, and both ends thereof are respectively restricted by the baffle component 3. Multiple sets of pushing mechanisms 5 move simultaneously with the drive of the transmission component 4. Since the pushing mechanism 5 abuts against the side surface of the spiral blade 11, the pushing of the pushing mechanism 5 will drive the spiral blade 11 to rotate. It should also be understood that the welding surface is located on the side opposite to the pushing mechanism 5, and the pushing mechanism 5 can offset the reverse force brought by the welded part.

[0038] It is worth mentioning that after the fixing mechanism fixes the shaft body 10, it can drive the shaft body 10 to rotate. By adjusting the rotation speed of the transmission component 4, the moving speed of the pushing mechanism 5 is further adjusted, so that the spiral blade 11 can rotate at the same angular velocity as the shaft body 10, making the spiral blade 11 and the shaft body 10 relatively stationary, so that the shaft body 10 and the spiral blade 11 are regarded as a whole. The fixing mechanism is a three-jaw chuck and the corresponding structure for driving its rotation, which is described in detail in the prior art and will not be elaborated here.

[0039] In this application, through the transmission component 4 and the pushing mechanism 5, the spiral blade 11 and the shaft body 10 rotate at the same angular velocity, and both ends of the spiral blade 11 are restricted by the baffle component 3 and will not have axial displacement. Therefore, during welding, the spiral blade 11 and the shaft body 10 rotate together just like spot welding, making the welding process more labor-saving and eliminating the prior spot welding process.

[0040] In other solutions, the pushing mechanism 5 includes a moving seat 51, a pushing component 52, a limiting connecting rod 53, and a limiting plate 54: The moving seat 51 is movably arranged on the transmission component 4, the pushing component 52 is arranged on the moving seat 51 and abuts against the spiral blade 11; The limiting plate 54 is connected to the pushing component 52 through the limiting connecting rod 53 and abuts against the top or bottom end of the spiral blade 11. It should be understood that the top and bottom ends of the spiral blade 11 respectively refer to the side end faces far from and close to the ground. Specifically, the limiting plate 54 is an arc-shaped plate corresponding to the spiral blade 11, and the inner diameter of the limiting plate 54 is the same as the outer diameter of the spiral blade 11. The limiting plate 54 can further limit the radial displacement of the spiral blade 11, and at the same time, the limiting plate 54 close to the ground can further provide support. At the same time, preferably, for the convenience of pushing, the pushing component 52 abuts against the side of the spiral blade 11 far from its axis.

[0041] In other solutions, the pushing mechanisms 5 are arranged at equal intervals, and adjacent pushing mechanisms 5 are respectively located on both sides of the shaft body 10. The pushing mechanisms 5 being located on both sides of the shaft body 10 means that the pushing mechanisms 5 are located on the side of the shaft body 10 close to the ground and the side far from the ground. By arranging the pushing mechanisms 5 at equal intervals, one above the other, the overall pushing force on the spiral blade 11 can be made more uniform, making the rotation of the spiral blade 11 smoother.

[0042] In other solutions, the pushing component 52 includes a pushing connecting rod 521, a pushing base 5222, and a pushing rod 523; One end of the pushing connecting rod 521 is connected to the moving seat 51, and the other end is connected to the pushing base 5222. The pushing rod 523 is arranged on the pushing base 5222 and can abut against the side of the spiral blade 11. The limiting connecting rod 53 is arranged on the pushing base 5222 or the pushing rod 523. Preferably, the end of the pushing rod 523 is provided with a rounded corner. By abutting against the spiral blade 11 through the rounded corner, the damage to the multi-spiral blade 11 can be reduced.

[0043] In other solutions, a connecting plate 524 is provided at a point on the pushing rod 523 far from the pushing base 5222, and a flexible pad 525 is provided at one end of the connecting plate 524 far from the pushing rod 523. The flexible pad 525 can increase the contact area with the spiral blade 11, making the pushing smoother. It should be understood that the flexible pad 525 is in a compressed state when it is not pushing the spiral blade 11 under the action of the pushing rod 523 in the initial state.

[0044] In other solutions, an unlocking mechanism 7 is further provided; the push rod 523 is rotatably connected to the push base 5222 through a rotating shaft 61, a limiting groove is provided on the rotating shaft 61, and a limiting rod 62 is slidably provided on the push base 5222, and the limiting rod 62 can be inserted into the limiting groove to limit the rotation of the rotating shaft 61; the unlocking mechanism 7 is provided on the base 2, and the unlocking mechanism 7 can move the limiting rod 62 away from the rotating shaft 61 and then make the push rod 523 rotate away from the shaft body 10. In the initial state, the limiting rod 62 is inserted into the limiting groove to limit the rotation of the rotating shaft 61. During the movement, the transmission component 4 drives the push base 5222 to approach the unlocking mechanism 7. Through the extrusion of the unlocking mechanism 7, the limiting rod 62 is moved away from the limiting groove, and then by extruding the push rod 523, the push rod 523 rotates along the axial direction of the rotating shaft 61 and away from the shaft body 10, thereby preventing the pushing mechanism 5 from interfering with the baffle component 3 during the movement. Specifically, the limiting rod 62 is arranged in the horizontal direction.

[0045] In other solutions, a pushing groove 621 with an inclined surface is provided on the limiting rod 62, and the unlocking mechanism 7 includes a fixing frame 71, an unlocking connecting plate 72, an unlocking push rod 73 and a rotating push plate 74; the fixing frame 71 is fixed on the base 2, the unlocking connecting plate 72 is fixed on the fixing frame 71, the unlocking push rod 73 is fixed on the unlocking connecting plate 72, and can make the limiting rod 62 slide away from the rotating shaft 61 by extruding the inclined surface of the pushing groove 621; the rotating push plate 74 is obliquely arranged on the unlocking connecting plate 72, and can make the push rod 523 rotate and move away from the spiral blade 11 by extruding the push rod 523. Specifically, after the unlocking push rod 73 first extrudes the pushing groove 621, the rotating push plate 74 then extrudes the push rod 523. The strength relationship between the unlocking push rod 73 and the rotating push plate 74 and the unlocking connecting plate 72 can be solved by adding or reducing reinforcing ribs. It should also be understood that two sets of unlocking connecting plates 72 and rotating push rods are respectively provided and are respectively corresponding to the pushing mechanisms 5 on the upper side and the lower side.

[0046] In other solutions, the baffle component 3 includes a baffle link 31 and a baffle body 32; the baffle link 31 is detachably fixed on the base 2, the baffle body 32 is detachably fixed on the baffle link 31, and the baffle body 32 can abut against the end face of the spiral blade 11. The baffle body 32 is an annular plate and can always abut against its end face during the rotation of the spiral blade 11. Preferably, the baffle body 32 is composed of two detachable semi-circular plates, thereby facilitating later disassembly.

[0047] In other solutions, the transmission component 4 includes a transmission fixing plate 41 and a lead screw 42; the transmission fixing plate 41 is fixed on the base 2, the lead screw 42 is rotatably connected to the transmission fixing plate 41, and the moving seat 51 is movably arranged on the lead screw 42. Preferably, the moving seat 51 is a ball nut. The rotation of the lead screw 42 can be realized by a corresponding motor or other mechanisms, so that the moving seat 51 moves at a required speed.

[0048] In other solutions, a driving gear 81 is provided at the rotating end of the shaft body fixing mechanism, and a driven gear 82 is coaxially fixed on the lead screw 42. The driving gear 81 and the driven gear 82 are meshed. Thus, the meshing of the two gears enables the rotation of the shaft body 10, i.e., the rotation of the lead screw 42, i.e., the movement of the pushing mechanism 5, and it is more convenient to adjust the rotation speed of the lead screw 42 according to the rotation requirement of the shaft body 10.

[0049] In addition, it is worth noting that preferably, a corresponding stopper or a similar mechanism is also provided on the welding robot. The relevant structure of CN212918224U can be referred to similarly, and corresponding optimizations can be made during specific implementation. The stopper abuts against the back surface of the spiral blade opposite to the pushing mechanism, and can give a certain reverse acting force to the pushing mechanism to reduce the deformation effect of the spiral blade.

[0050] The above-mentioned fixing device for welding the spiral blade can eliminate the previous spot welding process, enabling the spiral blade to rotate with the rotation of the shaft body while being fixed at both sides during welding, making the machine welding more convenient.

[0051] It should be understood that the above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fixing device for spiral blade welding, comprising an axis fixing mechanism for fixing the axis of the spiral blade, characterized in that: It also includes a base, a baffle assembly, a transmission assembly and a driving mechanism; The baffle assemblies are provided in two groups and are arranged on the base opposite to each other, and the two baffle assemblies can respectively abut against the two ends of the spiral blade; The transmission assembly is rotatably arranged on the base, and the pushing mechanism is provided with multiple groups. One end of the pushing mechanism is movably arranged on the transmission assembly, and the other end abuts against the side surface of the spiral blade. The rotation of the transmission assembly can drive the pushing mechanism to move, and the pushing of the pushing mechanism can drive the spiral blade to rotate at the same angular velocity as the shaft body. The pushing mechanism comprises a moving seat, a pushing assembly, a limiting connecting rod and a limiting plate: the moving seat is movably arranged on the transmission assembly, the pushing assembly is arranged on the moving seat and abuts against the spiral blade; the limiting plate is connected to the pushing assembly through the limiting connecting rod and abuts against the top end or the bottom end of the spiral blade; The pushing assembly includes a pushing connecting rod, a pushing base and a pushing rod; one end of the pushing connecting rod is connected to the moving base, and the other end is connected to the pushing base; the pushing rod is arranged on the pushing base and can abut against the side of the spiral blade; the limiting connecting rod is arranged on the pushing base or the pushing rod; An unlocking mechanism is also provided; the push rod is rotatably connected to the push base through a rotating shaft, a limiting groove is provided on the rotating shaft, and a limiting rod can be slidably provided on the pushing base, and the limiting rod can be inserted into the limiting groove to limit the rotation of the rotating shaft; the unlocking mechanism is provided on the base, and the unlocking mechanism can make the limiting rod move away from the rotating shaft and then make the push rod rotate away from the shaft body; The limit rod is provided with a push groove with an inclined surface, and the unlocking mechanism includes a fixed frame, an unlocking connecting plate, an unlocking push rod and a rotating push plate; the fixed frame is fixed on the base, the unlocking connecting plate is fixed on the fixed frame, the unlocking push rod is fixed on the unlocking connecting plate, and can slide the limit rod in the direction away from the rotating shaft by squeezing the inclined surface of the push groove; the rotating push plate is obliquely arranged on the unlocking connecting plate, and can rotate the push rod and move away from the spiral blade by squeezing the push rod.

2. A spiral blade welding fixing device according to claim 1, characterized in that: The pushing mechanisms are arranged at equal intervals, and adjacent pushing mechanisms are respectively located on both sides of the shaft body.

3. A spiral blade welding fixing device according to claim 1, characterized in that: The pushing rod is provided with a connecting plate at a point away from the pushing base, and the connecting plate is provided with a flexible pad at one end away from the pushing rod.

4. A spiral blade welding fixing device according to claim 1, characterized in that: The baffle assembly includes a baffle connecting rod and a baffle body; the baffle connecting rod is detachably fixed on the base, the baffle body is detachably fixed on the baffle connecting rod, and the baffle body can abut against the end surface of the spiral blade.

5. A spiral blade welding fixing device according to any one of claims 1 to 4, characterized in that: The transmission assembly comprises a transmission fixing plate and a lead screw; the transmission fixing plate is fixedly arranged on the base, the lead screw is rotatably connected to the transmission fixing plate, and the movable seat is movably arranged on the lead screw.

6. A spiral blade welding fixing device according to claim 5, characterized in that: A driving gear is provided on the rotating end of the shaft fixing mechanism, and a driven gear is coaxially fixed on the lead screw, and the driving gear is meshed with the driven gear.

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