Automatic cutting mechanism for hair dryer handle stub bar

Abstract

The automatic cutting mechanism for the stub bar of the blower handle comprises a bottom plate and a top plate, a supporting core column which vertically extends upwards is arranged on the bottom plate, the top plate is arranged above the supporting core column in an up-down moving mode, a cylindrical cutter which vertically extends downwards is arranged at the bottom of the top plate, and the shape of the supporting core column is matched with an inner cavity of the blower handle. When the blower handle is arranged on the supporting core column in a sleeving manner, the upper edge of the supporting core column abuts against the lower surface of an inner annular flange, connected with the stub bar, on the blower handle; the lower end face of the cylindrical cutter is provided with a plurality of cutting edge plates extending downwards, the cutting edge plates correspond to the stub bars one to one, the inner walls of the bottoms of the cutting edge plates obliquely extend downwards and outwards to form cutting edges aligned to the roots of the stub bars, when the top plate moves downwards, the cylindrical cutter moves downwards along with the cutting edge plates, and the cutting edges cut off the stub bars from the roots. The mechanism can realize automatic cutting of the hair dryer handle stub bar, saves time and labor, is high in efficiency, regular in cut, good in consistency and attractiveness, and low in reject ratio.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, and particularly relates to an automatic cutting mechanism for the sprue of a hair dryer handle. Background Art

[0002] A hair dryer is a common household appliance, which usually includes a barrel and a handle connected to the bottom of the barrel. The handle of the hair dryer is usually a cylindrical injection molded part. To ensure its roundness and dimensions, a three-point side gate injection method needs to be adopted. After molding and taking out, the sprue 2 is connected to the hair dryer handle 1 (as Figure 1 shown), and it needs to be cut manually with a utility knife, which is time-consuming, laborious, and has low efficiency. It is also easy to cause uneven cuts on the hair dryer handle 1, with poor consistency and aesthetics, and a high rejection rate. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problems existing in the prior art, and provide an automatic cutting mechanism for the sprue of a hair dryer handle.

[0004] To achieve the above purpose, the technical solution provided by the utility model is an automatic cutting mechanism for the sprue of a hair dryer handle, including:

[0005] A bottom plate, on which a support core column extending vertically upward is provided;

[0006] A top plate, which is movably arranged above the support core column up and down, and a cylindrical cutter extending vertically downward is provided at the bottom of the top plate;

[0007] The outer shape of the support core column matches the inner cavity of the hair dryer handle. When the hair dryer handle is sleeved on the support core column, the upper edge of the support core column abuts against the lower surface of the inner annular flange connected to the sprue on the hair dryer handle;

[0008] The lower end surface of the cylindrical cutter has a blade plate extending downward. There are multiple blade plates corresponding to the sprue one by one. The inner wall of the bottom of the blade plate extends downward and outward to form a blade edge, and the blade edge is aligned with the root of the sprue. When the top plate moves downward, the cylindrical cutter follows and moves downward, so that the blade edge cuts off the sprue from the root.

[0009] Preferably, the bottom plate includes a lower bottom plate and an upper bottom plate locked above the lower bottom plate. A first countersunk hole is opened on the lower surface of the upper bottom plate, and the first countersunk hole is used to embed the first outer annular flange at the bottom of the support core column. The countersunk depth of the first countersunk hole is equal to the thickness of the first outer annular flange.

[0010] Preferably, the top plate includes an upper top plate and a lower top plate locked below the upper top plate. A second countersunk hole is formed on the upper surface of the lower top plate. The second countersunk hole is used to embed a second outer annular flange at the top of the cylindrical cutter. The countersunk depth of the second countersunk hole is equal to the thickness of the second outer annular flange.

[0011] Further preferably, the automatic cutter for the hair dryer handle blank also includes a pressing component. The pressing component includes a thimble movably penetrating through the lower top plate in the vertical direction and a round nut connected to the bottom of the thimble. When the cutting edge cuts the blank, the lower end surface of the round nut presses against the upper surface of the inner annular flange.

[0012] Further preferably, the pressing component further includes a round wire spring for driving the thimble to move downward relative to the lower top plate. The round wire spring is sleeved on the thimble, and two end portions of the round wire spring respectively press against the lower surface of the lower top plate and the upper end surface of the round nut.

[0013] Further preferably, a cylindrical end is connected to the upper end portion of the thimble. The diameter of the end is greater than the outer diameter of the thimble. A third countersunk hole for accommodating the end is provided on the upper surface of the lower top plate. The difference between the countersunk depth of the third countersunk hole and the height of the end is greater than or equal to the root thickness of the blank.

[0014] Further preferably, there are multiple groups of the pressing components corresponding to the blanks one by one. The pressing components are located outside the cutting edge.

[0015] Preferably, the cylindrical cutter has an opening in its circumferential direction to avoid a button plate extending upward at the upper end of the hair dryer handle.

[0016] Further preferably, the upper end of the support core column has a support bar extending vertically upward. The outer wall of the support bar fits with the inner wall of the button plate. The upper end of the support bar is 3-5 mm higher than the button plate.

[0017] Preferably, the inside of the support core column is hollow to form a cavity for receiving the blank.

[0018] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0019] The automatic cutting mechanism for the nozzle of the hair dryer handle provided by the utility model includes a bottom plate and a top plate. A supporting core column extending vertically upward is provided on the bottom plate. The top plate is movably arranged above the supporting core column. A cylindrical cutter extending vertically downward is provided at the bottom of the top plate. By making the outer shape of the supporting core column match the inner cavity of the hair dryer handle, when the hair dryer handle is sleeved on the supporting core column, the upper edge of the supporting core column abuts against the lower surface of the inner annular flange connected to the nozzle on the hair dryer handle; the lower end surface of the cylindrical cutter has a blade plate extending downward, there are multiple blade plates corresponding to the nozzles one by one, and the bottom inner wall of the blade plate extends downward and outward to form a blade edge, so that the blade edge is aligned with the root of the nozzle. When the top plate moves downward, the cylindrical cutter follows and moves downward, and the blade edge cuts off the nozzle from the root. This mechanism can realize the automatic cutting of the nozzle of the hair dryer handle, which is time-saving, labor-saving and has high efficiency, and the cut is regular, with good consistency and aesthetics and low defect rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective schematic view of the hair dryer handle, at this time, the nozzle has not been cut off.

[0021] Figure 2 is a front view schematic view of the preferred embodiment of the utility model.

[0022] Figure 3 is Figure 2 the left view schematic view of

[0023] Figure 4 is Figure 2 the sectional view along the A-A direction in

[0024] Figure 5 is Figure 3 the sectional view along the B-B direction in

[0025] Figure 6 is Figure 2 the perspective schematic view of

[0026] Wherein: 1. Hair dryer handle; 2. Nozzle; 3. Inner annular flange; 4. Button plate; 10. Bottom plate; 11. Lower bottom plate; 111. Central hole; 12. Upper bottom plate; 121. First countersunk hole; 20. Top plate; 21. Upper top plate; 22. Lower top plate; 221. Second countersunk hole; 222. Third countersunk hole; 30. Supporting core column; 31. First outer annular flange; 32. Supporting strip; 33. Cavity; 40. Cylindrical cutter; 41. Blade plate; 42. Blade edge; 43. Second outer annular flange; 44. Opening; 50. Tightening assembly; 51. Thimble; 52. Round nut; 53. Round wire spring; 54. End. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] As Figures 2 to 6As shown in the figure, the automatic cutting mechanism for the nozzle of the hair dryer handle provided by the utility model includes a bottom plate 10 and a top plate 20. Among them, a supporting core column 30 extending vertically upward is provided on the bottom plate 10; the top plate 20 is movably arranged above the supporting core column 30 in the vertical direction, and a cylindrical cutter 40 extending vertically downward is provided at the bottom of the top plate 20; the outer contour of the supporting core column 30 matches the shape of the inner cavity of the hair dryer handle 1. When the hair dryer handle 1 is sleeved on the supporting core column 30, the upper edge of the supporting core column 30 abuts against the lower surface of the inner annular flange 3 connected to the nozzle 2 on the hair dryer handle 1; the lower end surface of the cylindrical cutter 40 has a blade plate 41 extending downward. There are multiple blade plates 41, which correspond to multiple nozzles 2 one by one. The inner wall of the bottom of the blade plate 41 extends obliquely downward and outward until it intersects with the outer wall of the bottom of the blade plate 41, forming a blade edge 42. The blade edge 42 is aligned with the root of the nozzle 2. When the top plate 20 moves downward, the cylindrical cutter 40 follows and moves downward, so that the blade edge 42 cuts off the nozzle 2 from the root.

[0028] The advantage of such a setting is that it can realize the automatic cutting of the nozzle of the hair dryer handle, which saves time and effort, has high efficiency, and the cut is regular, with good consistency and aesthetics, and a low defective rate.

[0029] In order to conveniently fix the supporting core column 30 and the cylindrical cutter 40, in this embodiment, the bottom plate 10 includes a lower bottom plate 11 and an upper bottom plate 12 locked above the lower bottom plate 11. A first countersunk hole 121 is opened on the lower surface of the upper bottom plate 12, and the first countersunk hole 121 is used to embed the first outer annular flange 31 at the bottom of the supporting core column 30. The countersunk depth of the first countersunk hole 121 is equal to the thickness of the first outer annular flange 31; the top plate 20 includes an upper top plate 21 and a lower top plate 22 locked below the upper top plate 21. A second countersunk hole 221 is opened on the upper surface of the lower top plate 22, and the second countersunk hole 221 is used to embed the second outer annular flange 43 at the top of the cylindrical cutter 40. The countersunk depth of the second countersunk hole 221 is equal to the thickness of the second outer annular flange 43.

[0030] To ensure the cutting effect of the nozzle 2, the automatic cutting mechanism for the nozzle of the hair dryer handle further includes a pressing component 50. The pressing component 50 includes a thimble 51 movably passing through the lower top plate 22 in the vertical direction and a round nut 52 connected to the bottom of the thimble 51. When the top plate 20 moves downward to drive the blade edge 42 to cut off the nozzle 2, the lower end surface of the round nut 52 abuts against the upper surface of the inner annular flange 3 on the hair dryer handle 1 to prevent shaking.

[0031] In order to realize the gradually increasing force pressing against the upper surface of the inner annular flange 3 when the top plate 20 moves downward, in this embodiment, the pressing component 50 further includes a round wire spring 53 for driving the thimble 51 to move downward relative to the lower top plate 22. The round wire spring 53 is sleeved on the thimble 51, and the two end parts of the round wire spring 53 respectively abut against the lower surface of the lower top plate 22 and the upper end surface of the round nut 52.

[0032]

[0032] In order to prevent the ejector pin 51 from detaching from the lower top plate 22, further, a cylindrical end 54 is connected to the upper end of the ejector pin 51. The diameter of the end 54 is larger than the outer diameter of the ejector pin 51. A third countersunk hole 222 for accommodating the end 54 is provided on the upper surface of the lower top plate 22. The difference between the countersunk depth of the third countersunk hole 222 and the height of the end 54 is greater than or equal to the root thickness of the sprue 2. For the convenience of processing, the ejector pin 51 and the end 54 are integrally formed.

[0033] In order to ensure the cutting effect of all the sprues 2, further, there are multiple sets of pressing components 50 which correspond to multiple sprues 2 one by one, and the pressing components 50 are located outside the cutting edge 42.

[0034]

[0033] In order to adapt to the hair dryer handle 1 and facilitate alignment, further, the cylindrical cutter 40 has an opening 44 in its circumferential direction to avoid the button plate 4 extending upward from the upper end of the hair dryer handle 1. At the same time, the upper end of the support core column 30 has a support strip 32 extending vertically upward. The outer wall of the support strip 32 is in contact with the inner wall of the button plate 4, and the upper end of the support strip 32 is 3 - 5 mm higher than the button plate 3 to avoid damage to the button plate 4 caused by the excessive downward movement of the top plate 20.

[0035] In order to prevent the cut sprues 2 from accumulating on the top of the support core column 30 and affecting subsequent cutting operations, further, the inside of the support core column 30 is hollow to form a cavity 33 for receiving the cut sprues 2. At the same time, a central hole 111 corresponding to the cavity 33 is provided at the center of the lower bottom plate 11, which can facilitate the discharge of the cut sprues 2.

[0036]

[0034] The above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope 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. The hair dryer handle material head automatic cutting mechanism includes: A bottom plate, wherein the bottom plate is provided with a supporting core column extending vertically upward; A top plate, the top plate is movably arranged above the supporting core column, and a cylindrical cutter extending vertically downward is provided at the bottom of the top plate; Features: The shape of the support stem matches the inner cavity of the hair dryer handle. When the hair dryer handle is mounted on the support stem, the upper edge of the support stem abuts against the lower surface of the inner annular flange on the hair dryer handle connected to the material head. The lower end face of the cylindrical cutter has a cutting edge plate extending downward, and there are multiple cutting edge plates corresponding one to one with the material head. The bottom inner wall of the cutting edge plate extends downward and outward at an angle to form a cutting edge, and the cutting edge is aligned with the root of the material head. When the top plate moves downward, the cylindrical cutter follows and moves downward, so that the cutting edge cuts off the material head from the root.

2. The hair dryer handle material head automatic cutting mechanism according to claim 1, characterized in that: The base plate includes a lower base plate and an upper base plate locked above the lower base plate. A first countersunk hole is opened on the lower surface of the upper base plate. The first countersunk hole is used to embed the first outer annular flange at the bottom of the supporting core column. The countersunk depth of the first countersunk hole is equal to the thickness of the first outer annular flange.

3. The hair dryer handle material head automatic cutting mechanism according to claim 1, characterized in that: The top plate includes an upper top plate and a lower top plate locked under the upper top plate. A second countersunk hole is opened on the upper surface of the lower top plate. The second countersunk hole is used to embed the second outer annular flange on the top of the cylindrical cutter. The countersunk depth of the second countersunk hole is equal to the thickness of the second outer annular flange.

4. The hair dryer handle material head automatic cutting mechanism according to claim 3, characterized in that: The automatic cutting mechanism for the hair dryer handle material head also includes a tightening component, which includes a pin that is movably arranged on the lower top plate and connected to the bottom of the pin. When the cutting edge cuts off the material head, the lower end surface of the round nut presses against the upper surface of the inner annular flange.

5. The hair dryer handle material head automatic cutting mechanism according to claim 4, characterized in that: The pressing assembly also includes a round wire spring for driving the ejector pin to move downward relative to the lower ejector plate. The round wire spring is sleeved on the ejector pin, and the two ends of the round wire spring respectively press against the lower surface of the lower ejector plate and the upper end surface of the round nut.

6. The hair dryer handle material head automatic cutting mechanism according to claim 4, characterized in that: The upper end of the ejector pin is connected to a cylindrical end head, the diameter of the end head is larger than the outer diameter of the ejector pin, the upper surface of the lower ejector plate is provided with a third countersunk hole for accommodating the end head, and the difference between the countersunk depth of the third countersunk hole and the height of the end head is greater than or equal to the root thickness of the material head.

7. The hair dryer handle material head automatic cutting mechanism according to claim 4, characterized in that: There are multiple groups of the clamping components corresponding to the material heads one by one, and the clamping components are located on the outside of the cutting edge.

8. The hair dryer handle material head automatic cutting mechanism according to claim 1, characterized in that: The cylindrical cutter has an opening in its circumferential direction to avoid the button plate extending upward from the upper end of the hair dryer handle.

9. The hair dryer handle material head automatic cutting mechanism according to claim 8, characterized in that: The upper end of the support core column is provided with a support strip extending vertically upward, the outer wall of the support strip is in contact with the inner wall of the button plate, and the upper end of the support strip is 3-5 mm higher than the button plate.

10. The hair dryer handle material head automatic cutting mechanism according to claim 1, characterized in that: The support core column is hollow inside, forming a cavity for receiving the material head.

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