Fixing tool for pre-drilling center hole in hub part of net wheel

Abstract

The net wheel hub center hole pre-drilling fixing tool comprises a supporting table, a supporting rod is installed in the middle of the supporting table, a positioning block is installed on the upper portion of the supporting rod, an installation block is arranged on the supporting table, a pressing mechanism is arranged on the upper portion of the installation block and comprises an air cylinder and a supporting block, and the supporting block is located at the position close to the circle center of the supporting table. The air cylinder is in driving connection with a piston rod, a pressing block is installed on the piston rod, and at least one part of the pressing block is located above the supporting block. According to the net wheel fixing device, the net wheel is fixed by pressing the rim of the net wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of net wheel processing, and more specifically, to a fixing tool for pre-drilling a center hole in the hub of a net wheel. Background Art

[0002] When pre-drilling the center hole in the hub of a net wheel, a fixture is required for fixation. Currently, the fixing method used is three-jaw centripetal clamping, but this fixing method cannot be used for products with a diameter less than 10 inches. The diameters of some existing net wheel hubs are much less than 10 inches, resulting in the inapplicability of the current fixing method. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned existing technologies and provide a fixing tool for pre-drilling a center hole in the hub of a net wheel.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a fixing tool for pre-drilling a center hole in the hub of a net wheel, which includes a support table. A support rod is installed at the middle position of the support table, and a positioning block is installed on the upper part of the support rod. An installation block is arranged on the support table, and a pressing mechanism is arranged on the upper part of the installation block. The pressing mechanism includes a cylinder and a support block. The support block is located at a position close to the center of the support table. The cylinder is drivingly connected with a piston rod, and a pressing block is installed on the piston rod. At least a part of the pressing block is located above the support block.

[0006] Further, the positioning block is in the shape of a frustum of a cone, and the diameter of the upper end of the positioning block is smaller than that of the lower end.

[0007] Further, an installation plate is installed at the lower part of the support table, and an installation ring is arranged on the outer periphery of the support rod. The installation ring is located below the installation plate, and a spring is connected between the installation ring and the installation plate.

[0008] Further, the installation block can move along the radial direction of the support table.

[0009] Further, a screw rod groove is formed on the support table, a screw rod is rotatably arranged in the screw rod groove, a screw rod nut block is arranged on the screw rod, and the installation block is installed on the screw rod nut block. A driving mechanism for driving the screw rod to rotate is arranged on the support table.

[0010] Further, a plurality of screw rod grooves are provided, and the plurality of screw rod grooves are uniformly arranged on the support table.

[0011] Further, the driving mechanism includes a driving motor. A driving motor is arranged in each screw rod groove, and the driving motor is drivingly connected with the corresponding screw rod.

[0012] Furthermore, the driving mechanism includes a driving motor which is arranged in one of the screw rod grooves and is drivingly connected to the screw rod located in the screw rod groove. The outer ends of the screw rods all penetrate through the support platform and are connected with bevel gears. A support ring is connected to the outer periphery of the support platform. A bevel gear ring is rotatably arranged on the support ring, and the bevel gear ring is meshed with each bevel gear.

[0013] The beneficial effects of the present utility model are as follows: it can press the end face of the rim, thereby fixing the net wheel and preparing for drilling the center hole; the pressing mechanism can move radially along the support platform to adjust the position, which is applicable to net wheels of different sizes. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the detection device for the production of large circular knitting machine cylinders in this embodiment;

[0015] Figure 2 It is a top view of the detection device for the production of large circular knitting machine cylinders in this embodiment;

[0016] Figure 3 It is a schematic diagram of the use state of the detection device for the production of large circular knitting machine cylinders in this embodiment.

[0017] Reference numerals: 1, base; 2, support platform; 3, mounting block; 4, cylinder; 5, piston rod; 6, pressing block; 7, bevel gear ring; 8, driving motor; 9, support block; 10, mounting plate; 11, support rod; 12, positioning block; 13, mounting ring; 14, spring; 15, screw rod groove; 16, screw rod; 17, screw rod nut block; 18, bevel gear; 19, support ring. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] As shown in the appended Figure 1 - appended Figure 3As shown, a fixing tool for pre-drilling a center hole of a hub of a net wheel comprises a base 1, a support platform 2 is arranged on the upper part of the base 1, a support rod 11 is installed in the middle of the support platform 2, a positioning block 12 is installed on the upper part of the support rod 11, a threaded hole is provided on the top of the support rod 11, a step hole is provided in the middle of the positioning block 12, a screw passes through the step hole on the positioning block 12 and is screwed into the threaded hole of the support rod 11, thereby fixing the positioning block 12 on the support rod 11. The positioning block 12 and the support rod 11 are detachably connected, and the positioning block 12 of a suitable size can be selected according to different types of rims, so that the positioning block 12 can be extended into the lower end of the shaft hole of the rim hub for positioning and auxiliary support.

[0020] A mounting block 3 is provided on the support platform 2, and a clamping mechanism is provided on the upper part of the mounting block 3. The clamping mechanism includes a cylinder 4 and a support block 9. The support block 9 is located near the center of the support platform 2. The cylinder 4 is driven and connected to a piston rod 5. A pressure block 6 is installed on the piston rod 5. At least a part of the pressure block 6 is located above the support block 9. After the hub of the mesh wheel is centrally positioned by the positioning block 12, the lower end surface of the rim is located on the support block 9, and the rim is supported by the support block 9. The cylinder 4 controls the piston rod 5 to contract, and the piston rod 5 drives the pressure block 6 to descend, so that the pressure block 6 is pressed on the upper end surface of the rim. The pressure block 6 and the support block 9 cooperate to clamp and fix the rim, thereby completing the fixation of the mesh wheel.

[0021] The positioning block 12 is a truncated cone structure, and the diameter of the upper end of the positioning block 12 is smaller than the diameter of the lower end, so that the positioning block 12 can better extend into the shaft hole of the hub of the net wheel. As the portion of the positioning block 12 extending into the shaft hole of the hub increases, the diameter of the extending portion also increases accordingly, and finally it can resist the inner wall of the shaft hole to achieve support.

[0022] The support rod 11 is arranged through the support platform 2, and a mounting plate 10 is installed at the lower part of the support platform 2. A mounting ring 13 is arranged on the outer periphery of the support rod 11, and the mounting ring 13 is located below the mounting plate 10. A spring 14 is connected between the mounting ring 13 and the mounting plate 10. The support rod 11 can move downward a certain distance through the setting of the spring 14. The positioning block 12 can move downward after being pressed by the hub of the net wheel, so that the lower end surface of the rim contacts the support block 9.

[0023] The mounting block 3 can move along the radial direction of the support platform 2, so that the distance between the clamping mechanism on the mounting block 3 and the center of the support platform 2 changes, thereby being suitable for mesh wheels of different sizes.

[0024] A lead screw groove 15 is formed in the support table 2. A lead screw 16 is rotatably arranged in the lead screw groove 15. A lead screw nut block 17 is arranged on the lead screw 16. The mounting block 3 is mounted on the lead screw nut block 17. A driving mechanism for driving the rotation of the lead screw 16 is arranged on the support table 2. There are several lead screw grooves 15, and the several lead screw grooves 15 are evenly arranged on the support table 2. The driving mechanism drives the rotation of the lead screw 16 to drive the movement of the lead screw nut block 17, thereby adjusting the position of the mounting block 3.

[0025] The driving mechanism includes a driving motor 8. The driving motor 8 is mounted in the lead screw groove 15, and the driving motor 8 is drivingly connected to the lead screw 16. Each lead screw 16 is directly driven by the associated driving motor 8.

[0026] The driving mechanism includes a driving motor 8. The driving motor 8 is arranged in one of the lead screw grooves 15 and is drivingly connected to the lead screw 16 located in the lead screw groove 15. The outer ends of the lead screws 16 all pass through the support table 2 and are connected with bevel gears 18. A support ring 19 is connected to the outer periphery of the support table 2. A bevel gear ring 7 is rotatably arranged on the support ring 19. The bevel gear ring 7 is meshed with each bevel gear 18. Only one driving motor 8 needs to be arranged. The driving motor 8 drives the rotation of the associated lead screw 16. The lead screw 16 drives the rotation of the bevel gear 18. The bevel gear 18 then drives the rotation of the engaged bevel gear ring 7. The bevel gear ring 7 drives the rotation of the remaining bevel gears 18, so that the remaining lead screws 16 also rotate synchronously, thereby synchronously adjusting the movement of each lead screw nut block 17.

[0027] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fixing tool for pre-drilling a center hole in the hub of a net wheel, characterized in that It includes a support platform (2), a support rod (11) is installed at the middle position of the support platform (2), a positioning block (12) is installed on the upper part of the support rod (11), an installation block (3) is arranged on the support platform (2), a pressing mechanism is arranged on the upper part of the installation block (3), the pressing mechanism includes a cylinder (4) and a support block (9), the support block (9) is located at a position close to the center of the support platform (2), the cylinder (4) is drivingly connected with a piston rod (5), a pressing block (6) is installed on the piston rod (5), and at least a part of the pressing block (6) is located above the support block (9).

2. The fixing tool for pre-drilling the center hole of the hub of a net according to claim 1, characterized in that, The positioning block (12) is in the shape of a frustum of a cone, and the diameter of the upper end of the positioning block (12) is smaller than that of the lower end.

3. The fixing tool for pre-drilling the center hole of the hub of a net wheel according to claim 1, characterized in that, The installation block (3) can move along the radial direction of the support platform (2).

4. The fixing tooling for pre-drilling a central hole in the hub of a net according to claim 3, characterized in that, A lead screw groove (15) is formed on the support platform (2), a lead screw (16) is rotatably arranged in the lead screw groove (15), a lead screw nut block (17) is arranged on the lead screw (16), the installation block (3) is installed on the lead screw nut block (17), and a driving mechanism for driving the lead screw (16) to rotate is arranged on the support platform (2).

5. The fixing tool for pre-drilling the center hole of the hub of a net according to claim 4, characterized in that, A plurality of the lead screw grooves (15) are provided, and the plurality of lead screw grooves (15) are evenly arranged on the support platform (2).

6. The fixing tool for pre-drilling the center hole of the hub of a net according to claim 5, characterized in that, The driving mechanism includes a driving motor (8), and a driving motor (8) is arranged in each lead screw groove (15), and the driving motor (8) is drivingly connected with the corresponding lead screw (16).

7. The fixing tool for pre-drilling the center hole of the hub of a net according to claim 5, characterized in that, The driving mechanism includes a driving motor (8), the driving motor (8) is arranged in one of the lead screw grooves (15) and is drivingly connected with the lead screw (16) located in the lead screw groove (15), the outer ends of the lead screws (16) all penetrate through the support platform (2) and are connected with bevel gears (18), a support ring (19) is connected to the outer periphery of the support platform (2), a bevel gear ring (7) is rotatably arranged on the support ring (19), and the bevel gear ring (7) is meshed with each bevel gear (18).

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