Positioning device for helical blade production

Abstract

The invention discloses a positioning device for spiral blade production. The positioning device comprises a base, a supporting assembly, a fixing frame, a pushing frame and a positioning mechanism. The supporting assembly is arranged on the base; the fixing frame and the pushing frame are respectively arranged on the base, and the positioning mechanisms are respectively arranged on the fixing frame and the pushing frame; the positioning mechanism comprises a fixing plate, a spherical positioning assembly, an angle limiting component and a pushing component. The fixing plate is arranged on the fixing frame or the pushing frame; the spherical positioning assembly comprises a plurality of positioning balls and a connecting rod, and the positioning balls rotationally abut against the spiral blade; a plurality of angle limiting parts are arranged, and the positioning ball can rotate towards the spiral blade through sliding of the pushing part; the pushing part is arranged on the fixing plate in a sliding mode, and sliding of the pushing part can enable the angle limiting part to slide towards the connecting rod. According to the positioning device for producing the spiral blade, the spiral blade can be positioned and limited in a point and line fitting mode, and abrasion and the like caused during positioning can be reduced.

Description

Technical Field

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

[0002] Spiral blades are mainly used to transport materials with high viscosity and compressibility. This type of spiral surface has the function of stirring and mixing materials during the conveying process. When processing the spiral blades, the finished blades need to be welded to the central shaft body to complete the production of the spiral blades.

[0003] The existing production method is that workers first put the spiral blades on the central axis, then successively perform multi-point welding on the spiral blades to fix them, and finally successively perform comprehensive welding on the central axis on the spiral blades. The above processing method does not have a positioning tool, resulting in low precision in the welding of the spiral blades, which greatly affects the quality of the spiral blade production and makes the spiral blades extremely susceptible to damage during use.

[0004] Therefore, relevant technicians have designed a positioning device as shown in CN221695799U, which specifically achieves positioning by clamping the blade surface of the spiral blade with multiple clamps. However, as is well known, the blade surface of the spiral blade is a spiral surface, and the existing clamps are usually polygonal shapes such as rectangles. The clamping points with the spiral blade are usually the two end points or one of the end points of the clamps. In order to prevent the movement of the spiral blade, a large force is usually required for clamping, so that the force is concentrated on a single point, which is easy to cause certain damage to the side of the spiral blade. Summary of the invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a positioning device for spiral blade production, so as to solve the technical problem mentioned in the above background technology that the positioning point of the existing positioning device is an isolated single point, which easily causes wear to the spiral blade.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0007] A positioning device for spiral blade production, used for installing and positioning the spiral blade and the shaft, comprising a base, a support assembly, a fixing frame, a pushing frame and a positioning mechanism;

[0008] The support assembly is arranged on the base and can support the shaft;

[0009] The fixed frame and the pushing frame are respectively arranged on the base, the pushing frame can move toward the fixed frame, and the positioning mechanism is provided with a plurality of groups, which are respectively arranged on the fixed frame and the pushing frame;

[0010] The positioning mechanism includes a fixed plate, a spherical positioning assembly, an angle limiting component and a pushing component; the fixed plate is arranged on the fixed frame or the pushing frame; the spherical positioning assembly includes a positioning ball and a connecting rod, and there are multiple positioning balls, one of the positioning balls is fixed on the positioning plate, the positioning ball is hinged to another positioning ball through the connecting rod, and the positioning ball can abut against the spiral blade; there are multiple angle limiting components, and they are slidably arranged on the fixed plate, and the sliding of the pushing component can cause the positioning ball to rotate toward the spiral blade; the pushing component is slidably arranged on the fixed plate, and the sliding of the pushing component can cause the angle limiting component to slide toward the connecting rod.

[0011] Furthermore, the angle limiting component includes a limiting push component, a transmission component and a limiting component; the limiting push component is slidably disposed on the fixed plate, the transmission component and the limiting component are rotatably disposed on the fixed plate respectively, the sliding of the pushing component can drive the transmission component to rotate forward, so that the limiting pushing component pushes the connecting rod to rotate toward the spiral blade, and the limiting component can limit the transmission component from reversing. Due to the limitation of the limiting component, even if the limiting push component leaves the transmission component, the transmission component can maintain the position limitation of the limiting push component under the limitation of the limiting component.

[0012] Furthermore, the limiting push assembly includes a limiting rack and a push rod; the limiting rack is slidably connected to the fixed plate, and the positive rotation of the transmission assembly can drive the limiting rack to slide toward the connecting rod, and the push rod is fixed on the limiting rack and can push the connecting rod. By setting it as a cylindrical rod, the friction between the connecting rod and the push rod can be reduced, thereby reducing possible wear.

[0013] Furthermore, the transmission assembly includes a transmission shaft, a driving gear, a driven gear and a ratchet; the transmission shaft is rotatably connected to the fixed plate, the driving gear, the driven gear and the ratchet are respectively coaxially fixed on the fixed plate, the driven gear is meshed with the limiting rack, the sliding of the pushing component can drive the driving gear to rotate, and the limiting assembly can limit the reversal of the ratchet.

[0014] Furthermore, the limiting assembly includes a limiting link, a pawl and a torsion spring; the limiting link is arranged on the fixed plate, the pawl is rotatably arranged on the limiting link and is connected to the fixed plate through the torsion spring, and the pawl can limit the reversal of the ratchet.

[0015] Furthermore, the pushing component includes a sliding plate, a lifting plate, a driving rack and a height adjustment component; the sliding plate is slidably connected to the fixed plate, the lifting plate can be lifted and slidably connected to the sliding plate, the driving rack is fixedly arranged on the sliding plate and can drive the pushing component to slide; the height adjustment component is arranged on the sliding plate and can change the height of the lifting plate, so that the rack can drive different angle limiting components in the same group of positioning mechanisms. Specifically, the driving gears in each angle limiting component are of different heights, and the driving rack is adjusted in height under the drive of the height adjustment component to mesh with and drive different driving gears.

[0016] Furthermore, the height adjustment assembly includes a height fixing plate, a height adjustment shaft and a support plate; the height fixing plate is fixed on the sliding plate, the bottom of the height adjustment shaft is rotatably connected to the lifting plate and passes through the sliding plate, and the support plate is fixed on the height adjustment shaft and is located between the sliding plate and the lifting plate; the height adjustment shaft can rotate to make the support plate on top of or leave the height fixing plate. By placing the support plate on different fixing plates or leaving the fixing plate and dropping to the lowest point, the height position adjustment of the driving rack is achieved, so that a single rack can drive and adjust each driving component in this group.

[0017] Furthermore, each of the sliding plates on the fixed plate or the push plate is slidably connected to a connecting plate, and a telescopic rod corresponding to the height adjustment shaft can be rotatably provided on the connecting plate, and one end of the telescopic rod is rotatably connected to the connecting plate, and the other end is fixed to the height adjustment shaft. Through this structure, each driving rack can be driven to slide at the same time, and the height position of each driving rack can be changed at the same time, making the adjustment more convenient.

[0018] Furthermore, a pushing member is provided on the base, and the pushing member is connected to the pushing frame and can drive the pushing frame to slide.

[0019] Furthermore, the support assembly includes a support frame and a support plate; the support frame is fixed on the base, and the support plate is fixed on the support frame. Reference may be made to the support structure shown in CN221695799U.

[0020] Compared with the prior art, the advantages of the present invention include:

[0021] In the present application, by adjusting the angle of each positioning ball in each positioning mechanism, each positioning ball can make adaptive changes according to the shape of different spiral blades, so that it can abut the side of the spiral blade at multiple points, and the spiral blade can be positioned and restricted by points and lines. Compared with the existing positioning devices, the positioning result can have more contact points with the spiral blade, and at the same time, it fits the shape of the spiral blade, which can reduce the wear caused by positioning.

[0022] At the same time, by adjusting the angles of the positioning balls, the device can adapt to spiral blades of different shapes, making the device more adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is an overall schematic diagram of a positioning device for spiral blade production in the present invention;

[0025] Figure 2 A top view of a positioning device for producing spiral blades in the present invention;

[0026] Figure 3 is a schematic diagram of the positioning mechanism in the present invention;

[0027] Figure 4 for Figure 3 A cross-sectional schematic diagram of the positioning mechanism shown.

[0028] Reference numerals:

[0029] Axle 11, spiral blade 12, pushing member 13, base 2, supporting assembly 3, supporting frame 31, supporting plate 32, fixing frame 4, pushing frame 5, positioning mechanism 6, fixing plate 61, spherical positioning assembly 62, positioning ball 621, connecting rod 622, angle limiting component 7, limiting pushing assembly 71, limiting rack 711, pushing rod 712, transmission assembly 72, transmission shaft 721, driving gear 722, driven gear 723, ratchet 724, limiting assembly 73, limiting connecting rod 731, pawl 732, torsion spring 733, pushing component 8, sliding plate 81, lifting plate 82, driving rack 83, height adjustment assembly 84, height fixing plate 841, height adjustment shaft 842, supporting plate 843, connecting plate 91, telescopic rod 92. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The embodiment of the present invention is intended to introduce and illustrate the structural composition of a positioning device for spiral blade production and the matching relationship between the various component structures. Unless otherwise specified, the size, material and manufacturing process of each component in the positioning device for spiral blade production in the embodiment of the present invention can be selected according to the specific situation and are not specifically limited or explained here.

[0036] 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.

[0037] Please also read Figure 1-Figure 4 , this embodiment provides a positioning device for the production of a spiral blade 12, which is used to install and position the spiral blade 12 and the shaft 11, including a base 2, a support assembly 3, a fixing frame 4, a pushing frame 5 and a positioning mechanism 6;

[0038] The support assembly 3 is disposed on the base 2 and can support the shaft 11;

[0039] The fixed frame 4 and the pushing frame 5 are respectively arranged on the base 2, and the pushing frame 5 can move toward the fixed frame 4. There are multiple groups of positioning mechanisms 6, which are respectively arranged on the fixed frame 4 and the pushing frame 5; that is, the fixed frame 4 and the pushing frame 5 are respectively provided with a plurality of positioning mechanisms 6, and by moving the pushing frame 5 toward the fixed frame 4, the positioning mechanisms 6 on the pushing frame 5 and the positioning mechanisms 6 on the fixed frame 4 are respectively abutted against the spiral blade 12, thereby achieving the purpose of positioning the spiral blade 12. Preferably, the fixed frame 4 and the pushing frame 5 are respectively located on both sides of the base 2, and when the shaft 11 and the spiral blade 12 are placed, the spiral blade 12 should be placed between the positioning mechanisms 6 on the fixed frame 4 and the pushing frame 5 whose axes are adjacent.

[0040] The positioning mechanism 6 includes a fixed plate 61, a spherical positioning component 62, an angle limiting component 7 and a pushing component 8; the fixed plate 61 is arranged on the fixed frame 4 or the pushing frame 5; the spherical positioning component 62 includes a positioning ball 621 and a connecting rod 622, and a plurality of positioning balls 621 are provided, one positioning ball 621 is fixed on the positioning plate, and the positioning ball 621 is hinged to another positioning ball 621 through the connecting rod 622, and the positioning ball 621 can abut the spiral blade 12; specifically, the plurality of positioning balls 621 are connected by the connecting rod 622 to form an unclosed linear distribution, and through the hinge, each positioning ball 621 can be rotated to a desired angle to abut the side of the spiral blade 12, so that each positioning ball 621 is distributed in the spiral trend of the spiral blade 12 to achieve multi-point abutment. There are multiple angle limiting components 7, which are slidably arranged on the fixed plate 61. The sliding of the pushing component 8 can make the positioning ball 621 rotate toward the spiral blade 12. Specifically, except for the positioning ball 621 fixed on the fixed plate 61, the other positioning balls 621 correspond to the pushing components 8 one by one. The sliding of the pushing component 8 can make the corresponding positioning balls 621 rotate toward the side of the spiral blade 12, so that the positioning balls 621 abut against the spiral blade 12. The pushing component 8 is slidably arranged on the fixed plate 61. The sliding of the pushing component 8 can make the angle limiting component 7 slide toward the connecting rod 622.

[0041] That is, by pushing the component 8 to slide toward the angle limiting component 7, the angle limiting component 7 slides toward the connecting rod 622 and squeezes the connecting rod 622, thereby changing the angle of the positioning ball 621, so that the positioning ball 621 abuts against the side of the spiral blade 12. It is worth mentioning that the pushing component 8 can be set to correspond to different angle limiting components 7 by changing the shape, and can also be set in multiple forms and correspond to each angle limiting component 7 one by one.

[0042] When the structure of the present application is in use, the angles of the positioning balls 621 in the positioning mechanisms 6 are first changed by the pushing components 8 to correspond to the shape of the spiral blade 12, and then the shaft 11 is placed on the supporting assembly 3, and the pushing frame 5 is controlled to move toward the fixed frame 4, so that the adjacent positioning mechanisms 6 on the fixed frame 4 and the pushing frame 5 respectively abut against the opposite surfaces of the spiral blade 12, thereby achieving the positioning of the spiral blade 12.

[0043] In the present application, by adjusting the angle of each positioning ball 621 in each positioning mechanism 6, each positioning ball 621 can make adaptive changes according to the shape of different spiral blades 12, so that it can abut the side of the spiral blade 12 at multiple points, and the spiral blade 12 can be positioned and restricted by points and lines. Compared with the existing positioning device, the positioning result can have more contact points with the spiral blade 12, and at the same time fit the shape of the spiral blade 12, which can reduce the wear caused by positioning.

[0044] At the same time, by adjusting the angles of the positioning balls 621 , the device can adapt to spiral blades 12 of different shapes, making the device more adaptable.

[0045] In other schemes, the angle limiting component 7 includes a limiting pushing component 71, a transmission component 72 and a limiting component 73; the limiting pushing component 71 is slidably provided on the fixed plate 61, and the transmission component 72 and the limiting component 73 are respectively rotatably provided on the fixed plate 61, and the sliding of the pushing component 8 can drive the transmission component 72 to rotate forward, so that the limiting pushing component 8 pushes the connecting rod 622 to rotate toward the spiral blade 12, and the limiting component 73 can limit the transmission component 72 from reversing.

[0046] Specifically in this embodiment, the sliding of the push component 8 toward the transmission component 72 can make the transmission component 72 rotate forward, and the sliding of the push component 8 away from the transmission component 72 can make the transmission component 72 reverse. It should be understood that the forward rotation of the transmission component 72 drives the limited push component 71 to move toward the connection stem, and realizes the purpose of pushing the connecting rod 622 to rotate the connecting rod 622. After the limited push component 71 continuously abuts the connecting rod 622 and the positioning ball 621 abuts the spiral blade 12, the spiral blade 12 gives the connecting rod 622 a tendency to rotate in the opposite direction, that is, gives the limited push component 71 a tendency to slide in the opposite direction, and the reverse sliding of the limited push component 71 can reverse the transmission component 72, and the reverse of the transmission component 72 is limited by the limiting component 73, so each positioning ball 621 can be maintained at the required angle, and it is difficult to change the angle even if it abuts the spiral blade 12. And due to the limitation of the limiting component 73, even if the limited push component 71 leaves the transmission component 72, the transmission component 72 can maintain the position limitation of the limited push component 71 under the limitation of the limiting component 73.

[0047] In other embodiments, the limiting push assembly 71 includes a limiting rack 711 and a push rod 712; the limiting rack 711 is slidably connected to the fixed plate 61, and the positive rotation of the transmission assembly 72 can drive the limiting rack 711 to slide toward the connecting rod 622. The push rod 712 is fixed on the limiting rack 711 and can push the connecting rod 622. Preferably, the push rod 712 is a cylindrical rod, and by being set as a cylindrical rod, the friction between the push rod 712 and the connecting rod 622 can be reduced, thereby reducing possible wear.

[0048] In other embodiments, the transmission assembly 72 includes a transmission shaft 721, a driving gear 722, a driven gear 723 and a ratchet 724; the transmission shaft 721 is rotatably connected to the fixed plate 61, the driving gear 722, the driven gear 723 and the ratchet 724 are respectively coaxially fixed on the fixed plate 61, the driven gear 723 is meshed with the limiting rack 711, the sliding of the pushing component 8 can drive the driving gear 722 to rotate, and the limiting assembly 73 can limit the reverse rotation of the ratchet 724. Preferably, the transmission shaft 721 passes through the top and bottom surfaces of the fixed plate 61, and the driven gear 723 is located on the top surface of the fixed plate 61.

[0049] In other embodiments, the limiting assembly 73 includes a limiting link 731, a pawl 732 and a torsion spring 733; the limiting link 731 is disposed on the fixing plate 61, the pawl 732 is rotatably disposed on the limiting link 731 and connected to the fixing plate 61 through the torsion spring 733, and the pawl 732 can limit the reverse rotation of the ratchet 724. Through the cooperation between the ratchet 724 and the pawl 732, the transmission shaft 721 rotates forward, that is, drives the pawl 732 to repeatedly move away from the ratchet 724, and the ratchet 724 is limited by the pawl 732 when it reverses.

[0050] In other schemes, the pushing component 8 includes a sliding plate 81, a lifting plate 82, a driving rack 83 and a height adjustment assembly 84; the sliding plate 81 is slidably connected to the fixed plate 61, the lifting plate 82 is slidably connected to the sliding plate 81 in a liftable manner, the driving rack 83 is fixedly mounted on the sliding plate 81, and can drive the pushing component 8 to slide; the height adjustment assembly 84 is disposed on the sliding plate 81, and can change the height of the lifting plate 82, so that the rack can drive different angle limiting components 7 in the same group of positioning mechanisms 6. Specifically, the driving gears 722 in each angle limiting component 7 are of different heights, and the driving rack 83 is adjusted in height under the drive of the height adjustment assembly 84, so as to mesh and drive different driving gears 722. Preferably, the sliding plate 81 and the lifting plate 82 are both concave plates.

[0051] In other embodiments, the height adjustment assembly 84 includes a height fixing plate 84161, a height adjustment shaft 842 and a support plate 843; the height fixing plate 84161 is fixed on the sliding plate 81, the bottom of the height adjustment shaft 842 is rotatably connected to the lifting plate 82 and passes through the sliding plate 81, and the support plate 843 is fixed on the height adjustment shaft 842 and is located between the sliding plate 81 and the lifting plate 82; the height adjustment shaft 842 can rotate to make the support plate 843 on the top of the height fixing plate 84161 or leave it. The number of height fixing plates 84161 is determined by the number of pushing components 8 in the same group of positioning mechanisms 6, and the number is N-1. By placing the support plate 843 on different fixing plates 61 or leaving the fixing plate 61 and descending to the lowest point, the height position adjustment of the driving rack 83 is achieved, so that a single rack can drive and adjust each pushing component 8 in this group.

[0052] In other schemes, each sliding plate 81 on the fixed plate 61 or the push plate is also slidably connected to a connecting plate 91, and a telescopic rod 92 corresponding to the height adjustment shaft 842 can be rotatably provided on the connecting plate 91, and one end of the telescopic rod 92 is rotatably connected to the connecting plate 91, and the other end is fixed on the height adjustment shaft 842. Specifically, the sliding plate 81 slides along the connecting line of each positioning mechanism 6 on the fixed plate 61 or the push plate, that is, the axis of the shaft body 11 slides left and right. Through this structure, each driving rack 83 can be driven to slide at the same time, and the height position of each driving rack 83 can be changed at the same time, making the adjustment more convenient.

[0053] In other solutions, the base 2 is further provided with a pusher 13, which is connected to the pusher frame 5 and can drive the pusher frame 5 to slide. Preferably, the pusher 13 is a cylinder or a linear motor, etc., and is set as a cylinder in this application.

[0054] In other schemes, the support assembly 3 includes a support frame 31 and a support plate 32; the support frame 31 is fixed on the base 2, and the support plate 32 is fixed on the support frame 31. It should be understood that the support plate 32 is an arc-shaped plate adapted to the shaft body 11, and can support and fix the shaft body 11. It can preferably be an arc-shaped plate with an angle of more than 180°, and can achieve a small range of interference assembly on the shaft body 11, with an insertion of 3 to 5 mm, so as to facilitate the fixation of the shaft body 11. It should also be understood that the support assembly 3 is arranged on both sides. The support structure shown in CN221695799U can also be referred to.

[0055] The above-mentioned positioning device for spiral blade production can position and limit the spiral blades by points and lines, and can reduce the wear caused by positioning.

[0056] 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 positioning device for spiral blade production, used for installing and positioning spiral blades and shafts, characterized in that: It includes a base, a supporting assembly, a fixing frame, a pushing frame and a positioning mechanism; The support assembly is arranged on the base and can support the shaft; The fixed frame and the pushing frame are respectively arranged on the base, the pushing frame can move toward the fixed frame, and the positioning mechanism is provided with a plurality of groups, which are respectively arranged on the fixed frame and the pushing frame; The positioning mechanism includes a fixed plate, a spherical positioning assembly, an angle limiting component and a pushing component; the fixed plate is arranged on the fixed frame or the pushing frame; the spherical positioning assembly includes a positioning ball and a connecting rod, and there are multiple positioning balls, one of the positioning balls is fixed on the positioning plate, the positioning ball is hinged to another positioning ball through the connecting rod, and the positioning ball can abut against the spiral blade; there are multiple angle limiting components, and they are slidably arranged on the fixed plate, and the sliding of the pushing component can cause the positioning ball to rotate toward the spiral blade; the pushing component is slidably arranged on the fixed plate, and the sliding of the pushing component can cause the angle limiting component to slide toward the connecting rod.

2. A positioning device for spiral blade production according to claim 1, characterized in that: The angle limiting component includes a limiting pushing component, a transmission component and a limiting component; the limiting pushing component can be slidably arranged on the fixed plate, and the transmission component and the limiting component can be rotatably arranged on the fixed plate respectively, and the sliding of the pushing component can drive the transmission component to rotate forward, so that the limiting pushing component pushes the connecting rod to rotate toward the spiral blade, and the limiting component can limit the reverse rotation of the transmission component.

3. A positioning device for spiral blade production according to claim 2, characterized in that: The limiting pushing assembly includes a limiting rack and a pushing rod; the limiting rack is slidably connected to the fixed plate, and the positive rotation of the transmission assembly can drive the limiting rack to slide toward the connecting rod. The pushing rod is fixed on the limiting rack and can push the connecting rod.

4. A positioning device for spiral blade production according to claim 3, characterized in that: The transmission assembly includes a transmission shaft, a driving gear, a driven gear and a ratchet; the transmission shaft is rotatably connected to the fixed plate, the driving gear, the driven gear and the ratchet are respectively coaxially fixed on the fixed plate, the driven gear is meshed with the limiting rack, the sliding of the pushing component can drive the driving gear to rotate, and the limiting assembly can limit the reversal of the ratchet.

5. A positioning device for spiral blade production according to claim 4, characterized in that: The limiting assembly includes a limiting link, a pawl and a torsion spring; the limiting link is arranged on the fixing plate, the pawl is rotatably arranged on the limiting link and is connected to the fixing plate through the torsion spring, and the pawl can limit the reversal of the ratchet.

6. A positioning device for spiral blade production according to claim 1, characterized in that: The pushing component includes a sliding plate, a lifting plate, a driving rack and a height adjustment component; the sliding plate is slidably connected to the fixed plate, the lifting plate is slidably connected to the sliding plate in a liftable manner, the driving rack is fixedly mounted on the sliding plate and can drive the pushing component to slide; the height adjustment component is arranged on the sliding plate and can change the height of the lifting plate, so that the rack can drive different angle limiting components in the same group of positioning mechanisms.

7. A positioning device for spiral blade production according to claim 6, characterized in that: The height adjustment assembly includes a height fixing plate, a height adjustment shaft and a support plate; the height fixing plate is fixedly mounted on the sliding plate, the bottom of the height adjustment shaft is rotatably connected to the lifting plate and passes through the sliding plate, the support plate is fixedly mounted on the height adjustment shaft and is located between the sliding plate and the lifting plate; the height adjustment shaft can rotate to allow the support plate to be on top of or away from the height fixing plate.

8. A positioning device for spiral blade production according to claim 7, characterized in that: Each of the sliding plates on the fixed plate or the pushing plate is also slidably connected with a connecting plate, and the connecting plate is also rotatably provided with a telescopic rod corresponding to the height adjustment shaft one by one, one end of the telescopic rod is rotatably connected to the connecting plate, and the other end is fixed on the height adjustment shaft.

9. A positioning device for spiral blade production according to claim 1, characterized in that: The base is also provided with a pushing member, which is connected to the pushing frame and can drive the pushing frame to slide.

10. A positioning device for spiral blade production according to claim 1, characterized in that: The support assembly comprises a support frame and a support plate; the support frame is fixed on the base, and the support plate is fixed on the support frame.

Images