Manufacturing method of ceiling fan shroud

Abstract

A method for manufacturing a ceiling fan ball includes the following steps: (1) making a round blank using metal sheet or rolled metal sheet; (2) first drawing out a round tube-shaped seat blank; (3) second drawing out a round tube-shaped seat blank; (4) punching holes in the closed end plate of the round tube-shaped seat blank, the diameter of the punching holes being smaller than the diameter of the closed end plate; (5) turning the closed end plate after punching to form a round tube-shaped seat with the round tube-shaped seat being a cylindrical shape with openings at the top and bottom; (6) punching holes in the round tube-shaped seat to form connecting holes and stamping to form support grooves; (7) reverse stretching to form a spherical curved surface seat blank; (8) trimming; (9) shaping; forming a spherical curved surface seat; (10) making clearance grooves and positioning grooves. It is suitable for continuous completion in steps on an automated production line, with uniform standards, high quality, and reduced labor intensity for workers; compared with the existing technology of manufacturing with die-cast aluminum, it reduces energy consumption and labor intensity, and improves manufacturing efficiency and quality.

Description

Technical Field

[0001] This invention relates to a ceiling fan, and more particularly to a hanging ball of a ceiling fan. Background Technology

[0002] The existing technology, Chinese Patent 200820002255.1, describes a ceiling fan bracket structure. This bracket has a tapered, downward-tapering receiving interface, within which a rigid hanging ball is embedded. A stop ring is protruding at a predetermined position on the outer circumference of the hanging ball. The diameter of the stop ring is larger than the inner diameter of the receiving interface. A shock-absorbing sleeve covers at least the outer circumference below the stop ring of the hanging ball, with the curvature of its inner circumference matching the curvature of the outer circumference of the hanging ball. The outer circumference of the shock-absorbing sleeve is in complete contact with the inner circumference of the receiving interface. The hanging ball 30 is a downward-tapering, conical hollow body, housed within the receiving interface 24. It has an axial through-hole 31 at its center for attaching the upper end of a hanging rod 50. On two opposite sides of the through-hole 31, a notch 311 is recessed downwards from the top surface to accommodate the hanging rod 50. The 0 is inserted above the through hole 31, and a fixing pin 51 is inserted at the upper end. The two ends of the fixing pin 51 are engaged with the notches 311 on both sides of the through hole 31. The bottom end of the hanging rod 50 is used to fix a ceiling fan motor (not shown) to suspend the ceiling fan motor. The hanging ball 30 can be made of a hard material such as zinc or aluminum, and a stop ring 32 to prevent it from falling is protruding around the radial outer periphery of the upper end of the hanging ball 30. The problem is that the hanging ball 30 can be made of a hard material such as zinc or aluminum, and is made by die casting, which consumes a lot of energy, involves many machining steps, and has low efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a method for manufacturing a ceiling fan shroud, which features low energy consumption, few machining steps, and high efficiency.

[0004] This invention is achieved as follows: a method for manufacturing a ceiling fan shroud, characterized by the following steps:

[0005] (1) Use metal sheets or rolled metal sheets to make round blanks;

[0006] (2) First drawing of the cylindrical blank.

[0007] (3) Second drawing of the cylindrical blank.

[0008] (4) Punch holes on the closed end plate of the round tube blank, and the diameter of the punched holes is smaller than the diameter of the closed end plate;

[0009] (5) Flang the end plate after punching to form a cylindrical seat with openings at the top and bottom;

[0010] (6) Punch holes in the round tube seat to make connecting holes and stamp support grooves;

[0011] (7) Reverse stretching to produce a spherical curved surface blank;

[0012] (8) Trim the edges;

[0013] (9) Shaping; forming a spherical curved surface seat

[0014] (10) Make the clearance groove and positioning groove.

[0015] The special feature of the method for manufacturing a ceiling fan shroud ball is that after step (3), a third extension of the annular seat plate is also included.

[0016] The special feature of the hanging ball manufactured by the above-mentioned method for manufacturing ceiling fan hanging balls is that the hanging ball is integrally formed from a metal plate, and the hanging ball includes a cylindrical seat and a spherical curved surface seat. The cylindrical seat is provided with two support grooves and two connecting holes, and the spherical curved surface seat is provided with a positioning groove along the generatrix.

[0017] The special feature of the hanging ball is that the connecting hole and the support groove on the cylindrical seat are staggered.

[0018] The special feature of the hanging ball is that it is made of cold-rolled steel sheet.

[0019] The special feature of the hanging ball is that the spherical curved surface seat is also provided with a clearance groove, which corresponds to the connecting hole.

[0020] This invention discloses a method for manufacturing ceiling fan shrouds, which is suitable for continuous step-by-step completion on an automated production line, ensuring uniformity, high quality, and reducing the labor intensity of workers. Compared with the existing technology that uses die-cast aluminum, it reduces energy consumption and labor intensity, and improves manufacturing efficiency and quality. Attached Figure Description

[0021] Figure 1 This is a perspective view of the hanging ball of the present invention.

[0022] Figure 2 This is a three-dimensional sectional view of the hanging ball of the present invention.

[0023] Figure 3 This is a front view of the circular plate blank of the present invention.

[0024] Figure 4 This is one of the stretching process diagrams of the present invention.

[0025] Figure 5 This is the second diagram of the stretching process of the present invention.

[0026] Figure 6 This is a diagram illustrating the punching steps of the present invention.

[0027] Figure 7 This is a diagram illustrating the flanging steps of the present invention.

[0028] Figure 8 This is a step diagram of the connecting hole and support groove of the present invention.

[0029] Figure 9 This is one of the step diagrams for the spherical curved surface seat of the present invention.

[0030] Figure 10 This is the second step diagram of the spherical curved surface seat of the present invention.

[0031] Figure 11 This is a diagram showing the punching steps of the spherical curved surface seat of the present invention.

[0032] Figure 12 This is a step diagram of the spherical clearance groove and positioning groove of the present invention. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Example 1

[0035] like Figure 1 , Figure 2 The diagram shows the structure of the ceiling fan's swivel ball.

[0036] A method for manufacturing a ceiling fan shroud includes the following steps:

[0037] (1) Using sheet metal or rolled sheet metal to make round blanks; such as Figure 3 As shown,

[0038] (2) The first drawing process produces a cylindrical blank and a circular ring plate, such as... Figure 4 As shown;

[0039] (3) Second drawing of the cylindrical blank, such as Figure 5 As shown, through the second stretching, the height of the cylindrical blank increases and the diameter of the cylindrical blank decreases; the die head needs to be replaced during the second stretching.

[0040] (4) Punch holes in the closed end plate of the cylindrical blank; the diameter of the punched holes is smaller than the diameter of the closed end plate. Figure 6 As shown, after punching, the closed end plate of the round tubular blank is annular;

[0041] (5) In Figure 7In the state shown, the punched and closed end plate is flanged to form a cylindrical seat with openings at the top and bottom; as shown. Figure 8 As shown,

[0042] (6) Punch holes in the round tube seat to make connecting holes and stamp support grooves;

[0043] (7) Reverse stretching to produce a spherical curved surface blank;

[0044] (8) Trim the edges;

[0045] (9) Shaping; forming a spherical curved surface seat, such as Figure 11 As shown,

[0046] (10) Construct clearance grooves and positioning grooves. For example... Figure 12 As shown.

[0047] This embodiment is applicable to cases where the diameter of the circular tube seat is relatively large, such as a diameter of 27 mm.

[0048] The structure and method of the hanging ball are suitable for automated production lines. The hanging ball is made in one piece, requiring fewer operators, reducing labor intensity, and increasing production efficiency.

[0049] Example 2

[0050] Based on Example 1, a third extension of the annular plate is also included. Example 2 can be implemented when the diameter of the circular tube seat is small and the height is large, such as when the diameter of the circular tube is 22 mm;

[0051] In other words, the number of stretching cycles is closely related to the diameter of the round tube seat; during implementation, the number of stretching cycles should be increased or decreased appropriately according to the specifications.

[0052] Example 3

[0053] The hanging ball manufactured according to this method is as follows:

[0054] The hanging ball is made of a single piece of metal plate, such as Figure 1 , Figure 2 As shown, the hanging ball includes a cylindrical seat 1 and a spherical curved seat 2. The cylindrical seat 11 is provided with two support grooves 11 and two connecting holes 12, and the spherical curved seat 2 is provided with a positioning groove 21 along the generatrix.

[0055] The connecting hole 12 and the support groove 12 on the cylindrical seat 1 are staggered, that is, there is a central angle between them.

[0056] The hanging ball is made of cold-rolled steel sheet.

[0057] The spherical curved surface seat 2 is also provided with a clearance groove 22, which corresponds to the connecting hole 12.

[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for manufacturing a ceiling fan shroud, characterized in that: The hanging ball is integrally formed from a metal plate. The hanging ball includes a cylindrical base and a spherical curved base. The cylindrical base is provided with two support grooves and two connecting holes. The spherical curved base is provided with a positioning groove along the generatrix. The spherical curved base is also provided with a clearance groove, which corresponds to the connecting hole. It includes the following steps: (1) Use metal sheets or coiled metal sheets to make round blanks; (2) First drawing of the cylindrical blank, (3) Second drawing of the cylindrical blank, (4) Punch holes on the closed end plate of the round tube blank, and the diameter of the punched holes is smaller than the diameter of the closed end plate; (5) Flang the end plate after punching to form a cylindrical seat with openings at the top and bottom; (6) Punch holes in the round tube seat to make connecting holes and stamp support grooves; (7) Reverse stretching to produce a spherical curved surface blank; (8) Trimming; (9) Shaping; forming a spherical curved surface seat (10) Make the clearance groove and positioning groove.

2. The method for manufacturing a ceiling fan shroud according to claim 1, characterized in that: The step (3) is followed by a third extension of the annular plate surrounding the cylindrical seat.

3. The method for manufacturing a ceiling fan shroud according to claim 1, characterized in that: The connecting holes and support grooves on the cylindrical seat are staggered.

4. The method for manufacturing a ceiling fan shroud according to claim 1, characterized in that: The hanging ball is made of cold-rolled steel sheet.

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