Impeller production clamp convenient to demould

Abstract

The utility model relates to the technical field of clamp positioning, in particular to an impeller production clamp convenient to demould, which comprises a disc body, a through hole used for placing an impeller is arranged in the middle of the disc body, and a plurality of sliding grooves distributed in a radial shape are arranged on the top surface of the disc body. The multiple sliding grooves are slidably connected with clamping blocks matched with the sliding grooves in size and used for fixing an impeller, an annular groove is formed in the bottom end face of the disc body, a bevel gear is rotationally clamped to the end face, close to the clamping blocks, of the annular groove, and a bevel gear matched with the bevel gear is further rotationally connected into the annular groove through a rotating shaft. The end, outside the disc body, of the rotating shaft is coaxially connected with a cylindrical gear, a rack is arranged on the outer side of the cylindrical gear, and the rack is fixed to the end of a telescopic rod of a hydraulic rod through a bolt. The impeller production clamp convenient to demould is simple in structure, labor is reduced, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture positioning, in particular to an impeller production fixture which is convenient for demoulding. Background Art

[0002] The impeller is the main working part of the pump. It transfers the mechanical energy of the prime mover to the liquid and increases the energy of the liquid. When producing the impeller, a fixture is needed.

[0003] The patent with publication number CN210232246U discloses a five-axis machining center milling impeller fixture, including a tapered shank, a back disk end face locating seat, a center hole locating pin, and a nylon pressure head. The tapered shank is fixed in the shaft hole of the five-axis machining center, the back disk end face locating seat and the tapered shank are welded together, the center hole locating pin and the back disk end face locating seat are welded together, the nylon pressure head is threadedly connected to the center hole locating pin, the center hole of the impeller is radially positioned by the center hole locating pin, and axially positioned by the back disk end face locating seat, and the upper end face is pressed by a rotating pressure head configured by the machine tool.

[0004] Although the clamping of the impeller during milling by the five-axis machining center improves the impeller's production efficiency, production accuracy, and service life, its structure is complex and still requires a lot of manual labor. Utility Model Content

[0005] The utility model aims to provide an impeller production fixture which is convenient for demoulding, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An impeller production fixture that facilitates demoulding includes a disk body, a through hole for placing the impeller is opened in the center of the disk body, a plurality of radially distributed slide grooves are opened on the top surface of the disk body, and the plurality of slide grooves are slidably connected with clamping blocks of matching sizes and used to fix the impeller, a circular ring groove is opened on the bottom end surface of the disk body, a helical gear is rotatably clamped in the circular ring groove close to the end surface of the clamping block, a bevel gear that matches the helical gear is rotatably connected in the circular ring groove through a rotating shaft, a cylindrical gear is coaxially connected to one end of the rotating shaft outside the disk body, a rack is provided on the outside of the cylindrical gear, and the rack is fixed to the telescopic rod end of the hydraulic rod by bolts.

[0008] Preferably, the bottom ends of the plurality of slide grooves of the disk body are all connected to the annular groove, and the longitudinal section of the slide groove of the disk body is cross-shaped.

[0009] Preferably, a rubber film for preventing the impeller from being worn is pasted on one end surface of a plurality of the clamping blocks close to the center of the disk body, and a protrusion is integrally formed on the bottom end surface of the clamping block.

[0010] Preferably, the bevel gear is in a circular ring shape and has a plurality of spiral convex strips integrally formed on its top surface, and a plurality of notches matching with the convex strips on the top surface of the bevel gear are formed on the bottom end surface of the convex block.

[0011] Preferably, the top surface of the bevel gear has at least one circle of convex strips, the bottom surface of the protrusion has at least one groove, several grooves on the bottom surfaces of the protrusions are staggered and located on the same spiral circle, and the grooves on the bottom surfaces of the protrusions are engaged with the convex strips of the bevel gear; when several protrusions are engaged on the top surface of the bevel gear, the inner ends or outer ends of several protrusions are located on the same circular surface and the center of the circular surface and the center of the disk body are located on the same vertical line.

[0012] Preferably, a plurality of radially distributed helical teeth are integrally formed on the bottom surface of the helical gear and the helical teeth are meshed with the bevel gear. An arc groove is provided in the middle of the outer wall of the rotating shaft. A guide column for preventing the rotating shaft from deviating from its position is inserted at the bottom of the outer side wall of the disk body, and the guide column is tangent to the arc groove of the rotating shaft.

[0013] Preferably, a plurality of tooth grooves are integrally formed on the side wall of the rack strip, the gear teeth of the cylindrical gear are meshed with the tooth grooves of the rack, and the hydraulic rod is fixed to the external platform by bolts.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The impeller production fixture that is easy to demould is appropriately improved on the basis of the three-jaw chuck, and the structure becomes simple, easy to operate, and easy for users to quickly get started;

[0016] 2. The impeller production fixture that is easy to demould uses a hydraulic device as a power source, which reduces manual labor and improves production efficiency. At the same time, the hydraulic device makes the fixture more stable and facilitates impeller demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is one of the three-dimensional cross-sectional structural schematic diagrams in the utility model;

[0019] Figure 3 This is the second schematic diagram of the three-dimensional cross-sectional structure in the utility model;

[0020] Figure 4 It is a three-dimensional cross-sectional structural diagram of the disk body in the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the clamping block and the helical gear in the utility model.

[0022] In the figure:

[0023] 1. Plate body;

[0024] 2. Clamping block; 20. Bump; 21. Rubber membrane;

[0025] 3. Helical gear;

[0026] 4. Bevel gear;

[0027] 5. Rotating shaft; 50. Guide column;

[0028] 6. Cylindrical gear;

[0029] 7. Rack;

[0030] 8. Hydraulic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0033] An impeller production fixture for easy demoulding includes a disk body 1, a through hole for placing an impeller is opened in the center of the disk body 1, a plurality of radially distributed slide grooves are opened on the top surface of the disk body 1, and the plurality of slide grooves are slidably connected with clamping blocks 2 of matching sizes and used to fix the impeller, a circular ring groove is opened on the bottom end surface of the disk body 1, and a bevel gear 3 is rotatably clamped in the circular ring groove close to the end surface of the clamping block 2, and the bevel gear 3 belongs to a transmission component, and a bevel gear 4 that matches the bevel gear 3 is rotatably connected in the circular ring groove through a rotating shaft 5, and the bevel gear 4 is used to transmit the external driving force to the bevel gear 3, and the rotating shaft 5 is coaxially connected to a cylindrical gear 6 at one end outside the disk body 1, and the cylindrical gear 6 is used to transmit the driving force to the rotating shaft 5, and a rack 7 is provided at the gear teeth of the cylindrical gear 6, and the rack 7 is fixed to the telescopic rod end of the hydraulic rod 8 by bolts, which is the driving source.

[0034] In this embodiment, the bottom ends of several slide grooves of the disk body 1 are all connected to the annular groove, so that the protrusion 20 and the spiral protrusion on the bevel gear 3 can be engaged with each other. The longitudinal section of the slide groove of the disk body 1 is cross-shaped, which facilitates the clamping block 2 to slide in the slide groove of the disk body 1.

[0035] In this embodiment, a rubber film 21 for preventing the impeller from being worn is pasted on one end surface of a plurality of clamping blocks 2 close to the center of the disk body 1, and a protrusion 20 is integrally formed on the bottom end surface of the clamping block 2, so that the protrusion 20 slides by the rotation of the bevel gear 3, thereby causing the entire clamping block 2 to slide.

[0036] In this embodiment, the bevel gear 3 is annular and has a plurality of spiral convex strips integrally formed on its top surface. The bottom end surface of the protrusion 20 is provided with a plurality of grooves matching with the convex strips on the top surface of the bevel gear 3 for engaging with the spiral convex strips of the bevel gear 3.

[0037] In this embodiment, there is at least one circle of convex strips on the top surface of the bevel gear 3, at least one groove on the bottom surface of the protrusion 20, and the positions of the grooves on the bottom surfaces of several protrusions 20 are staggered and located on the same spiral circle. The grooves on the bottom surface of the protrusion 20 are engaged with the convex strips of the bevel gear 3, and the convex strips are used as a mechanism for sliding the clamping block 2; when several protrusions 20 are all engaged on the top surface of the bevel gear 3, the inner ends or outer ends of several protrusions 20 are all located on the same circular surface and the center of the circular surface is located on the same vertical line as the center of the disk body 1. When the bevel gear 3 rotates, the protrusion 20 engaged with the spiral convex strips on the bevel gear 3 will move with the rotation of the bevel gear 3.

[0038] In this embodiment, a plurality of radially distributed helical teeth are integrally formed on the bottom surface of the helical gear 3 and the helical teeth are meshed with the bevel gear 4 to drive the helical gear 3 to rotate. An arc groove is provided in the middle of the outer wall of the rotating shaft 5. A guide column 50 for preventing the rotating shaft 5 from deviating from its position is inserted at the bottom of the outer side wall of the disk body 1, and the guide column 50 is tangent to the arc groove of the rotating shaft 5.

[0039] In this embodiment, a plurality of tooth grooves are integrally formed on the long side wall of the rack 7, and the gear teeth of the cylindrical gear 6 mesh with the tooth grooves of the rack 7 to facilitate driving the rotating shaft 5. The hydraulic rod 8 is fixed to the external platform by bolts, and the hydraulic rod 8 is the source of driving force for the entire device.

[0040] When the impeller production fixture for easy demoulding of the utility model is used, the clamping block 2 on the top surface of the disk body 1 is first slid outward by the hydraulic rod 8. Since the bottom end protrusions 20 of a plurality of clamping blocks 2 are all engaged with the spiral protrusions on the top surface of the bevel gear 3, the plurality of clamping blocks 2 will move together with the rotation of the bevel gear 3. When the plurality of clamping blocks 2 move to a suitable distance, the bottom end of the impeller is placed at the center of the disk body 1. Then, the hydraulic rod 8 is moved again to make the plurality of clamping blocks 2 move together to the center of the disk body 1 to clamp the impeller. At the same time, a rubber film 21 is provided on the surface of the clamping block 2 to reduce the wear on the impeller.

[0041] The above shows and describes the basic principle, main features and advantages of the present embodiment of the utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiment. The above embodiment and description are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present embodiment may have various changes and improvements, which fall within the scope of the present utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

Claims

1. An impeller production fixture for easy demoulding, comprising a disc body (1), characterized in that: A through hole for placing an impeller is provided at the center of the disk body (1), a plurality of radially distributed slide grooves are provided on the top surface of the disk body (1), and a plurality of the slide grooves are slidably connected to clamp blocks (2) of matching sizes and used to fix the impeller. A circular ring groove is provided on the bottom end surface of the disk body (1), and a helical gear (3) is rotatably engaged with the end surface of the circular ring groove close to the clamp block (2). A bevel gear (4) matching the helical gear (3) is rotatably connected in the circular ring groove via a rotating shaft (5). A cylindrical gear (6) is coaxially connected to one end of the rotating shaft (5) outside the disk body (1), and a rack (7) is provided on the outer side of the cylindrical gear (6). The rack (7) is fixed to the end of the telescopic rod of the hydraulic rod (8) by bolts.

2. The impeller production fixture for easy demoulding according to claim 1 is characterized in that: The bottom ends of the plurality of slide grooves of the disk body (1) all penetrate into the annular groove, and the longitudinal section of the slide groove of the disk body (1) is in a cross shape.

3. The impeller production fixture for easy demoulding according to claim 1 is characterized in that: A rubber film (21) is pasted on one end surface of a plurality of the clamping blocks (2) close to the center of the disk body (1) to prevent the impeller from being worn, and a convex block (20) is integrally formed on the bottom end surface of the clamping block (2).

4. The impeller production fixture for easy demoulding according to claim 3 is characterized in that: The bevel gear (3) is in the shape of a ring and has a plurality of spiral convex strips integrally formed on its top surface. The bottom end surface of the convex block (20) is provided with a plurality of notches matching the convex strips on the top surface of the bevel gear (3).

5. The impeller production fixture for easy demoulding according to claim 4 is characterized in that: The top surface of the bevel gear (3) has at least one convex strip, the bottom surface of the convex block (20) has at least one notch, the notches on the bottom surfaces of the plurality of convex blocks (20) are staggered and located on the same spiral turn, and the notches on the bottom surfaces of the convex blocks (20) are engaged with the convex strip of the bevel gear (3); when the plurality of convex blocks (20) are engaged with the top surface of the bevel gear (3), the inner ends or outer ends of the plurality of convex blocks (20) are located on the same circular surface, and the center of the circular surface and the center of the disk body (1) are located on the same vertical line.

6. The impeller production fixture for easy demoulding according to claim 1 is characterized in that: The bottom surface of the helical gear (3) is integrally formed with a plurality of helical teeth distributed in a radial shape, and the helical teeth mesh with the bevel gear (4); a circular arc groove is provided in the middle of the outer wall of the rotating shaft (5); a guide column (50) for preventing the rotating shaft (5) from deviating from its position is inserted at the bottom of the outer side wall of the disk body (1); the guide column (50) is tangent to the circular arc groove of the rotating shaft (5).

7. The impeller production fixture for easy demoulding according to claim 1 is characterized in that: A plurality of tooth grooves are integrally formed on the long side wall of the rack (7); the gear teeth of the cylindrical gear (6) mesh with the tooth grooves of the rack (7); and the hydraulic rod (8) is fixed to the external platform by bolts.

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