Fixing device for helical blade welding

Abstract

The invention discloses a fixing device for helical blade welding, which comprises a shaft body fixing mechanism for fixing a helical blade shaft body, and further comprises a base, a baffle plate assembly, a transmission assembly and a pushing mechanism, the two baffle assemblies are oppositely arranged on the base and can abut against the two ends of the spiral blade correspondingly. The transmission assembly is rotatably arranged on the base, one end of each pushing mechanism is movably arranged on the transmission assembly, the other end of each pushing mechanism abuts against the side face of the corresponding spiral blade, rotation of the transmission assembly can drive the pushing mechanisms to move, and pushing of the pushing mechanisms can drive the spiral blades to rotate at the same angular speed of a shaft body. According to the fixing device for welding the spiral blade, the previous spot welding process can be omitted, the spiral blade rotates along with rotation of the shaft body under the condition that the positions of the two sides are fixed during welding, and machine welding is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of spiral blade production and processing, and in particular relates to a spiral blade welding fixing device. Background Art

[0002] Spiral blades are mainly used to convey materials with high viscosity and compressibility. This type of spiral surface has the function of stirring and mixing materials while completing the conveying operation.

[0003] Usually, the spiral blades need to be welded to the corresponding shaft for use. The spiral blades and the shaft are usually produced separately, and then fixed together by welding. When the factory is welding, because the spiral blades are sleeved on the surface of the shaft, the spiral blades will be displaced when welding with traditional welding robots. Therefore, it is usually necessary to manually spot weld the spiral blades to achieve preliminary fixation. Then, the welded spiral blades and shaft are fixed with a three-jaw chuck, and then welded by a welding robot, which makes the welding process more complicated. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a fixing device for spiral blade welding to solve the technical problem mentioned in the above background technology that the spiral blades will be displaced during welding because they are directly mounted on the shaft and need to be fixed to the shaft before welding.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0006] A fixing device for spiral blade welding, comprising an axis fixing mechanism for fixing the axis of the spiral blade, and also comprising a base, a baffle assembly, a transmission assembly and a pushing mechanism;

[0007] 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;

[0008] The transmission component is rotatably disposed on the base, and the pushing mechanism is provided with multiple groups. One end of the pushing mechanism is movably disposed on the transmission component, and the other end abuts against the side surface of the spiral blade. The rotation of the transmission component 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.

[0009] In the present application, the transmission assembly and the driving mechanism are used to make the spiral blades and the shaft body rotate at the same angular velocity, and the two ends of the spiral blades are restricted by the baffle assembly and will not undergo axial displacement. Therefore, when welding, the spiral blades and the shaft body rotate together as if spot welding is performed, thereby making the welding process more labor-saving and eliminating the need for prior spot welding and fixing.

[0010] Furthermore, the pushing mechanism includes 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 or bottom end of the spiral blade. The limiting plate can further limit the radial displacement of the spiral blade, and the limiting plate close to the ground can further provide support.

[0011] Furthermore, the pushing mechanisms are arranged at equal intervals, and adjacent pushing mechanisms are respectively located on both sides of the shaft body. This structure can make the overall pushing force on the spiral blade more uniform, so that the rotation of the spiral blade is smoother.

[0012] Furthermore, 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 movable seat, and the other end is connected to the pushing base, the pushing rod is arranged on the pushing base and can abut the side of the spiral blade, and the limiting connecting rod is arranged on the pushing base or the pushing rod.

[0013] Furthermore, a connecting plate is provided at a point of 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] Furthermore, an unlocking mechanism is 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 limiting rod is squeezed by the unlocking mechanism to move away from the limiting groove, and then the push rod is squeezed to make the push rod rotate along the axial direction of the rotating shaft and away from the shaft body, thereby avoiding interference between the push mechanism and the baffle assembly during movement.

[0015] Further, 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 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. The unlocking connecting plate and the rotating push rod are respectively provided with two groups, and correspond to the pushing mechanisms located on the upper side and the lower side respectively.

[0016] Further, 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. The baffle body is an annular plate and can always abut against the end surface of the spiral blade during its rotation.

[0017] Furthermore, the transmission assembly includes a transmission fixing plate and a lead screw; the transmission fixing plate is fixed on the base, the lead screw is rotatably connected to the transmission fixing plate, and the movable seat is movably disposed on the lead screw.

[0018] Furthermore, 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 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 driving mechanism, which can make it easier for the lead screw to adjust its own rotation speed in accordance with the rotation requirements of the shaft.

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

[0020] In the present application, the transmission assembly and the driving mechanism are used to make the spiral blades and the shaft body rotate at the same angular velocity, and the two ends of the spiral blades are restricted by the baffle assembly and will not undergo axial displacement. Therefore, when welding, the spiral blades and the shaft body rotate together as if spot welding is performed, thereby making the welding process more labor-saving and eliminating the need for prior spot welding and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0023] Figure 2 is a schematic diagram of the propulsion mechanism in the present invention;

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

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

[0026] Reference numerals:

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

[0028] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0029] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words 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 terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 cannot be understood as a limitation on the present application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0032] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The embodiment of the present invention is intended to introduce and illustrate the structural composition of a fixing device for spiral blade welding and the matching relationship between the various component structures. Unless otherwise specified, the dimensions, materials and manufacturing processes of each component in the fixing device for spiral blade welding in the embodiment of the present invention can be selected according to specific circumstances and are not specifically limited or explained herein.

[0034] Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. For those skilled in the art, the present invention can be fully understood without the description of these details.

[0035] Please also read Figure 1-Figure 4, this embodiment provides a fixing device for welding a spiral blade 11, including a shaft fixing mechanism for fixing the shaft 10 of the spiral blade 11, and also includes a base 2, a baffle assembly 3, a transmission assembly 4 and a pushing mechanism 5;

[0036] There are two groups of baffle assemblies 3 which are arranged opposite to each other on the base 2, and the two baffle assemblies 3 can respectively abut against the two ends of the spiral blade 11; it should be understood that the spiral blade 11 always abuts against the baffle assembly 3 when rotating, and the two baffle assemblies 3 abut against the two ends of the spiral blade 11, thereby limiting the axial movement of the baffle assembly 3 on its shaft body 10.

[0037] The transmission assembly 4 is rotatably arranged on the base 2, and the pushing mechanism 5 is provided with multiple groups. One end of the pushing mechanism 5 is movably arranged on the transmission assembly 4, and the other end abuts against the side of the spiral blade 11. The rotation of the transmission assembly 4 can drive the pushing mechanism 5 to move, and the pushing of the pushing mechanism 5 can drive 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, and the spiral blade 11 is sleeved on the shaft body 10, and its two ends are respectively limited by the baffle assembly 3. The multiple groups of pushing mechanisms 5 move simultaneously with the driving of the transmission assembly 4. Since the pushing mechanism 5 abuts against the side 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 weld.

[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 assembly 4, the moving speed of the pushing mechanism 5 is adjusted, so that the spiral blade 11 can rotate at the same angular velocity as the shaft body 10, so that the spiral blade 11 and the shaft body 10 are relatively static, 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 a corresponding structure that drives it to rotate. It is described in detail in the prior art and will not be repeated here.

[0039] In the present application, the transmission assembly 4 and the driving mechanism 5 are used to make the spiral blade 11 and the shaft 10 rotate at the same angular velocity, and the two ends of the spiral blade 11 are restricted by the baffle assembly 3 and will not undergo axial displacement, so that when welding, the spiral blade 11 and the shaft 10 rotate together as if spot welding is performed, thereby making the welding process more labor-saving and eliminating the need for prior spot welding.

[0040] In other schemes, the pushing mechanism 5 includes a moving seat 51, a pushing assembly 52, a limiting link 53 and a limiting plate 54: the moving seat 51 is movably arranged on the transmission assembly 4, the pushing assembly 52 is arranged on the moving seat 51, and abuts against the spiral blade 11; the limiting plate 54 is connected to the pushing assembly 52 through the limiting link 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 refer to the side end faces away from and close to the ground, respectively. 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 the limiting plate 54 close to the ground can further provide support. At the same time, as a preference, in order to facilitate pushing, the pushing assembly 52 abuts against the side of the spiral blade 11 away from its axis.

[0041] In other schemes, 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 are located on both sides of the shaft body 10, which means that the pushing mechanisms 5 are located on the side of the shaft body 10 close to the ground and away from the ground. By arranging the pushing mechanisms 5 at equal intervals and one above and one below, the overall pushing force on the spiral blade 11 can be made more uniform, so that the rotation of the spiral blade 11 is smoother.

[0042] In other embodiments, the pushing assembly 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, and the rounded corner abuts against the spiral blade 11, which can reduce the damage of the multiple spiral blades 11.

[0043] In other embodiments, a connecting plate 524 is provided at a point of the push rod 523 away from the push base 5222, and a flexible pad 525 is provided at one end of the connecting plate 524 away from the push 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 an extrusion state when it does not push the spiral blade 11 in the initial state under the action of the push rod 523.

[0044] In other schemes, an unlocking mechanism 7 is further provided; the push rod 523 is rotatably connected to the push base 5222 through the rotating shaft 61, and a limiting groove is provided on the rotating shaft 61. A limiting rod 62 can be 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 make 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 assembly 4 drives the push base 5222 to approach the unlocking mechanism 7, and the limiting rod 62 is squeezed by the unlocking mechanism 7 to move away from the limiting groove. Then, by squeezing the push rod 523, the push rod 523 is rotated along the axial direction of the rotating shaft 61 and away from the shaft body 10, thereby avoiding interference between the push mechanism 5 and the baffle assembly 3 during the movement. Specifically, the limiting rod 62 is arranged in the horizontal direction.

[0045] In other schemes, the limit rod 62 is provided with a push groove 621 with an inclined surface, and the unlocking mechanism 7 includes a fixed frame 71, an unlocking connecting plate 72, an unlocking push rod 73 and a rotating push plate 74; the fixed frame 71 is fixed on the base 2, the unlocking connecting plate 72 is fixed on the fixed frame 71, and the unlocking push rod 73 is fixed on the unlocking connecting plate 72, and can slide the limit rod 62 away from the rotating shaft 61 by squeezing the inclined surface of the push groove 621; the rotating push plate 74 is obliquely arranged on the unlocking connecting plate 72, and can rotate the push rod 523 and move away from the spiral blade 11 by squeezing the push rod 523. Specifically, the unlocking push rod 73 first squeezes the push groove 621, and the rotating push plate 74 squeezes 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 the unlocking connecting plate 72 and the rotating push rod are respectively provided with two groups, and correspond to the pushing mechanism 5 located on the upper side and the lower side respectively.

[0046] In other solutions, the baffle assembly 3 includes a baffle connecting rod 31 and a baffle body 32; the baffle connecting rod 31 is detachably fixed on the base 2, and the baffle body 32 is detachably fixed on the baffle connecting rod 31, and the baffle body 32 can abut against the end surface of the spiral blade 11. The baffle body 32 is an annular plate, and can always abut against the end surface of the spiral blade 11 during the rotation process. Preferably, the baffle body 32 is composed of two semicircular plates detachably combined, thereby facilitating later disassembly.

[0047] In other embodiments, the transmission assembly 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 achieved by a corresponding motor or other mechanism, so that the moving seat 51 moves at a desired speed.

[0048] In other solutions, a driving gear 81 is provided on the rotating end of the shaft fixing mechanism, and a driven gear 82 is coaxially fixed on the lead screw 42, and the driving gear 81 meshes with the driven gear 82. Thus, the meshing of the two gears realizes the rotation of the shaft 10, that is, the rotation of the lead screw 42, that is, the movement of the driving mechanism 5, which can make it easier for the lead screw 42 to adjust its own rotation speed in accordance with the rotation requirements of the shaft 10.

[0049] It is also worth noting that, preferably, the welding robot is also provided with a corresponding block or a similar mechanism, and the relevant structure of CN212918224U can be similarly referred to. Corresponding optimization can be made during the specific implementation. The block abuts against the back side of the spiral blade opposite to the pushing mechanism, and can give the pushing mechanism a certain reverse force to reduce the deformation effect of the spiral blade.

[0050] The above-mentioned spiral blade welding fixing device can save the early spot welding process, so that during welding, the spiral blades can rotate with the rotation of the shaft body while the positions on both sides are fixed, making machine welding more convenient.

[0051] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people 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 limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All 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 component is rotatably disposed on the base, and the pushing mechanism is provided with multiple groups. One end of the pushing mechanism is movably disposed on the transmission component, and the other end abuts against the side surface of the spiral blade. The rotation of the transmission component 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.

2. A spiral blade welding fixing device according to claim 1, characterized in that: The pushing mechanism includes 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.

3. A spiral blade welding fixing device according to claim 2, 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.

4. A spiral blade welding fixing device according to claim 2, characterized in that: 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 seat, and the other end is connected to the pushing base; the pushing rod is arranged on the pushing base and can abut the side of the spiral blade; the limiting connecting rod is arranged on the pushing base or the pushing rod.

5. A spiral blade welding fixing device according to claim 4, 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.

6. A spiral blade welding fixing device according to claim 4, characterized in that: An unlocking mechanism is also provided; the pushing rod is rotatably connected to the pushing base via a rotating shaft, a limiting groove is provided on the rotating shaft, and a limiting rod can also 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 cause the pushing rod to rotate away from the shaft body.

7. A spiral blade welding fixing device according to claim 6, characterized in that: 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.

8. 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.

9. A spiral blade welding fixing device according to any one of claims 1 to 8, 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.

10. A spiral blade welding fixing device according to claim 9, 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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