A retractable brush rod card point automatic forming device

Abstract

The application discloses a retractable brush rod card point automatic forming device, which comprises an outer base, a sliding groove and a mounting groove are arranged on the outer base, the sliding groove is in a tapered structure with a wide upper part and a narrow lower part, and the mounting groove is arranged on the bottom surface of the sliding groove; an inner core rod, a forming groove for accommodating the brush rod is arranged on the inner core rod; wherein the inner core rod is elastically connected to the mounting groove, a protruding part is arranged on the outer side surface of the inner core rod, the protruding part is in a circular table structure with a wide upper part and a narrow lower part, a plurality of notches are arranged on the side wall of the forming groove in a circumferential direction, the notches extend downward from the upper end surface of the inner core rod, the notches are used for separating the side wall of the forming groove to form a plurality of forming units, and a forming protruding point is arranged on the inner wall of one forming unit. Compared with the prior art, the application solves the problem that the brush rod of the existing cosmetic brush is difficult to be accurately machined with a recess for a card point.

Description

Technical Field

[0001] This invention relates to the field of cosmetic brush handle processing technology, and in particular to an automatic forming device for retractable brush handle clamping points. Background Technology

[0002] In the process of using cosmetics, a brush is usually used to apply liquid cosmetic ingredients, and the bristles of the brush are used to ensure even application.

[0003] Cosmetic containers and brushes are typically secured to the lid or other parts to prevent loss. Therefore, to secure the cosmetic brush to other parts, recesses are created on the brush handle for easy connection and fixation. However, due to the small diameter of the brush handle, it is difficult to precisely control the machining depth and position of the recesses. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic forming device for the locking points of a retractable brush handle, so as to solve the problem that it is difficult to accurately process the locking point grooves on the brush handles of existing cosmetic brushes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a retractable brush rod automatic forming device, comprising:

[0006] The outer base has a sliding groove and a mounting groove. The sliding groove has a tapered structure that is wider at the top and narrower at the bottom, and the mounting groove is located on the bottom surface of the sliding groove.

[0007] The inner core rod has a molding groove for storing the brush handle;

[0008] The inner core rod is elastically connected to the mounting groove. A protrusion is provided on the outer side of the inner core rod. The protrusion has a frustum-shaped structure that is wider at the top and narrower at the bottom. Several notches are arranged circumferentially on the side wall of the molding groove. The notches extend downward from the upper end of the inner core rod. The notches are used to divide the side wall of the molding groove into several molding units. A molding protrusion is provided on the inner wall of each molding unit.

[0009] As a further description of the above technical solution:

[0010] A spring is installed inside the mounting slot, with one end of the spring contacting the inner core rod and the other end contacting the bottom surface of the mounting slot.

[0011] As a further description of the above technical solution:

[0012] The threaded rod of the fixing screw passes through the through hole on the bottom surface of the mounting slot and is threaded to the inner core rod. The back of the outer base is provided with a storage slot for storing the head of the fixing screw, and the spring is sleeved on the threaded rod.

[0013] As a further description of the above technical solution:

[0014] A round rod is provided between the head of the fixing screw and the threaded rod. The diameter of the threaded rod is smaller than the diameter of the round rod, and a spring is sleeved on the round rod.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In this invention, when it is necessary to process a recess on the outer surface of a makeup brush handle, the brush handle is first inserted into the forming groove of the inner core rod, and then the brush handle is continued to be inserted downwards. The inner core rod is pressed downwards into the outer base, and the protrusion on the outer side of the inner core rod is squeezed by the inner wall of the groove. Several forming units are squeezed close together and adhered to each other. During this pressing process, the forming protrusions on the inner wall of the forming unit are squeezed to form a recess on the outer surface of the brush handle. When the brush handle is released, the inner core rod returns to its original position under the action of elastic force. As the inner core rod moves upwards, the protrusion on the outer side of the inner core rod is no longer squeezed by the inner wall of the groove and eventually extends out of the groove. During this upward movement, several forming units are pushed outwards and returned to their original position due to the elastic deformation ability of the inner core rod itself. The forming protrusions on the inner wall of the forming unit are then separated from the outer surface of the brush handle, and the brush handle can then be pulled out.

[0017] 2. In this invention, after the brush handle of the cosmetic brush is pressed down and inserted into the automatic forming device for the locking point, the locking point is precisely processed on the surface of the brush handle. Then, the brush handle is released, and the brush handle can be released from the automatic forming device for the locking point. The locking point processing is simple and efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a retractable brush rod automatic forming device.

[0020] Figure 2 This is a structural breakdown diagram of a retractable brush rod automatic forming device.

[0021] Figure 3 This is a cross-sectional view of a retractable brush rod automatic forming device.

[0022] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0023] Legend:

[0024] 1. Outer base; 11. Slide groove; 111. Second chamfered surface; 12. Mounting groove; 13. Storage groove;

[0025] 2. Inner core rod; 21. Molding groove; 22. Protrusion; 23. Notch; 24. Molding protrusion; 25. First chamfered surface;

[0026] 3. Spring;

[0027] 4. Fixing screw; 41. Threaded rod; 42. Round rod. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example 1

[0034] Please see Figure 1-4 This invention provides a technical solution: a retractable brush rod automatic forming device, comprising:

[0035] The outer base 1 is provided with a sliding groove 11 and a mounting groove 12. The sliding groove 11 has a tapered structure that is wider at the top and narrower at the bottom, and the mounting groove 12 is provided on the bottom surface of the sliding groove 11.

[0036] The inner core rod 2 has a molding groove 21 for storing the brush rod;

[0037] The inner core rod 2 is elastically connected to the mounting groove 12. A protrusion 22 is provided on the outer side of the inner core rod 2. The protrusion 22 has a frustum-shaped structure that is wider at the top and narrower at the bottom. Several notches 23 are arranged circumferentially on the side wall of the molding groove 21. The notches 23 extend downward from the upper end of the inner core rod 2. The notches 23 are used to divide the side wall of the molding groove 21 into several molding units. A molding protrusion 24 is provided on the inner wall of each molding unit.

[0038] After the brush handle of a cosmetic brush is pressed down and inserted into the automatic forming device, the brush handle surface is precisely machined with locking points. Then, the brush handle is released, and the brush handle can be released from the automatic forming device. The locking point processing is simple and efficient.

[0039] The sidewall of the molding groove 21 has four circumferentially arranged notches 23, which form four independent molding units to process four recesses for installation on the outer surface of the makeup brush handle.

[0040] The number of notches 23 can be flexibly set according to the needs of machining the number of pits on the outer surface of the makeup brush handle.

[0041] The top opening of the forming groove 21 is provided with a first chamfered surface 25, which makes it easy to insert the brush rod into the forming groove 21 of the inner core rod 2 and avoid collision damage.

[0042] The top opening of the slide groove 11 is provided with a second chamfered surface 111 to avoid friction damage between the inner core rod 2 and the top of the slide groove 11 during the up and down movement, and to facilitate the downward pressing of the inner core rod 2.

[0043] Working principle: Under normal conditions, the protrusion 22 on the outer side of the inner core rod 2 extends out of the slide groove 11, and the several molding units on the inner core rod 2 are in a separated state.

[0044] When it is necessary to process a recess on the outer surface of the makeup brush handle, first insert the brush handle into the forming groove 21 of the inner core rod 2, and then continue to insert the brush handle downward. The inner core rod 2 is pressed downward into the outer base 1. The protrusion 22 on the outer side of the inner core rod 2 is squeezed by the inner wall of the slide groove 11. Several forming units are squeezed close together and stick together. During this pressing process, the forming protrusion 24 on the inner wall of the forming unit is squeezed to form a recess on the outer surface of the brush handle.

[0045] Release the brush rod, and the inner core rod 2 returns to its original position under the action of elastic force. As the inner core rod 2 moves upward, the protrusion 22 on the outer side of the inner core rod 2 is no longer squeezed by the inner wall of the slide groove 11 and eventually extends out of the slide groove 11. During this upward process, several molding units are pushed outward and reset due to the elastic deformation ability of the inner core rod 2 itself. The molding protrusion 24 on the inner wall of the molding unit then detaches from the outer surface of the brush rod, and the brush rod can then be pulled out.

[0046] Example 2

[0047] This embodiment further improves upon the above embodiment by providing the following technical solution: A spring 3 is provided inside the mounting groove 12, with one end of the spring 3 contacting the inner core rod 2 and the other end contacting the bottom surface of the mounting groove 12. The spring 3 is compressed during the downward pressing of the inner core rod 2, providing power for the upward reset of the inner core rod 2.

[0048] The threaded rod 41 of the fixing screw 4 passes through the through hole on the bottom surface of the mounting groove 12 and is threaded to the inner core rod 2. The back of the outer base 1 is provided with a storage groove 13 for storing the head of the fixing screw 4, and the spring 3 is sleeved on the threaded rod 41.

[0049] The fixing screw 4 enables the detachable connection between the inner core rod 2 and the outer base 1, and the fixing screw 4 limits the upward distance of the inner core rod 2 to prevent the inner core rod 2 from detaching from the outer base 1.

[0050] Example 3

[0051] Based on the above embodiments, this embodiment further improves upon the following technical solution: a round rod 42 is provided between the head of the fixing screw 4 and the threaded rod 41, the diameter of the threaded rod 41 is smaller than the diameter of the round rod 42, and the spring 3 is sleeved on the round rod 42.

[0052] The end face of the round rod 42 effectively controls the threaded connection between the inner core rod 2 and the threaded rod 41, preventing the threaded rod 41 from extending into the forming groove 21 and avoiding stripping of the threads between the inner core rod 2 and the fixing screw 4 during the pressing process, thus ensuring a reliable threaded connection. Furthermore, the spring 3 contacts the smooth outer surface of the round rod 42, preventing damage to the spring 3.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A retractable brush rod automatic forming device, characterized in that, include: The outer base has a sliding groove and a mounting groove. The sliding groove has a tapered structure that is wider at the top and narrower at the bottom, and the mounting groove is located on the bottom surface of the sliding groove. The inner core rod has a molding groove for storing the brush handle; The inner core rod is elastically connected to the mounting groove. A protrusion is provided on the outer side of the inner core rod. The protrusion has a frustum-shaped structure that is wider at the top and narrower at the bottom. Several circumferentially arranged notches are provided on the side wall of the molding groove. The notches extend downward from the upper end of the inner core rod. The notches are used to divide the side wall of the molding groove into several molding units. A molding protrusion is provided on the inner wall of each molding unit.

2. The retractable brush rod automatic forming device according to claim 1, characterized in that, A spring is installed inside the mounting groove, with one end of the spring contacting the inner core rod and the other end contacting the bottom surface of the mounting groove.

3. The retractable brush rod automatic forming device according to claim 2, characterized in that, The threaded rod of the fixing screw passes through the through hole on the bottom surface of the mounting groove and is threaded to the inner core rod. The back of the outer base is provided with a storage groove for storing the head of the fixing screw, and the spring is sleeved on the threaded rod.

4. The retractable brush rod automatic forming device according to claim 3, characterized in that, A round rod is provided between the head of the fixing screw and the threaded rod, the diameter of the threaded rod being smaller than the diameter of the round rod, and the spring is sleeved on the round rod.

5. The retractable brush rod automatic forming device according to claim 1, characterized in that, The sidewall of the forming groove has four notches arranged in a circumferential direction.

6. The retractable brush rod automatic forming device according to claim 1, characterized in that, The top opening of the forming groove is provided with a first chamfered surface.

7. The retractable brush rod automatic forming device according to claim 1, characterized in that, The top opening of the chute is provided with a second chamfered surface.

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