A headform clamping device and method

Abstract

The application discloses a head mould clamping device and method, comprising a head mould mounting seat, a mounting support, a pressing device, and a tightening device; the head mould clamping device can keep the head mould orientation unchanged when the head mould is tightened, solves the problem that the head mould neck part cannot be self-adapted due to different inner contour shapes, the bearing outer ring of the head mould clamping device is in contact with the pressing block and keeps relatively still, the tightening screw is relatively fixed with the bearing inner ring, the head mould orientation is kept unchanged, the tightening force is smooth and almost without friction during the process of tightening the head mould, the pressing block is uniformly distributed in the circumference, the design of the tension pressing head mould can be self-adapted to the head moulds with different neck shapes and sizes, the user does not need to separately customize the head mould with a unified mechanical interface, can directly purchase and use in the market, can reduce the test cost and shorten the procurement cycle, is economic and practical, convenient and simple to operate, and increases the user-friendly experience.

Description

Technical Field

[0001] This invention relates to the field of clamping device technology, and in particular to a head mold clamping device and method. Background Technology

[0002] A head model is a model designed and made according to the shape of the human head. The application fields of head models are very wide, including beauty and hairdressing teaching, clothing design, instrument design and many other aspects. Head models of various shapes and sizes can be used in different fields according to needs, and can also be used for practice, demonstration and other operations. They are quite common in daily life.

[0003] When using head molds, their replacement and installation are usually quite troublesome. When displaying or practicing with head molds, it is usually necessary to replace the head mold. However, due to the different shapes of the inner contour of the neck of the head mold, it cannot achieve self-adaptation. It is difficult to select a fixture when replacing it, and it is difficult to keep the head mold orientation unchanged when replacing it. The manual adjustment later is time-consuming and laborious. It usually requires a head mold with a uniform mechanical interface to be customized separately, which has the disadvantage of high production cost.

[0004] Therefore, those skilled in the art are dedicated to developing a head mold clamping device and method to overcome the shortcomings of the prior art. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the head mold clamping device disclosed in the prior art cannot achieve self-adaptation during the clamping process due to the different inner contour shapes of the neck of the head mold, and it is difficult to keep the head mold orientation unchanged when changing the head mold. The subsequent manual adjustment is time-consuming and laborious, and usually requires the customization of a head mold with a uniform mechanical interface, resulting in high manufacturing costs.

[0006] To achieve the above objectives, the first aspect of the present invention provides a head mold clamping device and method, including a head mold mounting base, a mounting bracket, a clamping device, and a tightening device; the top of the mounting bracket is fixedly connected to the head mold mounting base; the top of the head mold mounting base is connected to the clamping device; and the tightening device passes through the middle of the head mold mounting base and the mounting bracket.

[0007] Furthermore, the head mold mounting base includes a rotating support base at the top; the head mold mounting base includes a cavity inside; and the head mold mounting base includes an outer rotary curved surface.

[0008] Furthermore, the bottom of the mounting bracket includes a mechanical interface, which can be installed on different drive mechanisms; specifically, the mounting bracket includes a mounting frame and mounting screws; the bottom of the mounting frame includes four openings for the installation of four mounting screws; the inner walls on both sides of the mounting frame include protruding rods for support; the top of the mounting frame includes an opening for the passage of a tightening device.

[0009] Furthermore, the tightening device includes a tightening nut, a tightening screw, a bearing shaft, a bearing, and a fixing screw; the tightening nut is installed at the connection between the mounting bracket and the head mold mounting base, and in the middle of the tightening screw, fixing the relative positions of the mounting bracket, the tightening screw, and the head mold mounting base; the inner ring of the bearing is installed on the bearing shaft; the bearing shaft and the tightening screw are fixed together by the fixing screw, with no relative movement; the tightening screw passes through the middle of the head mold mounting base from the top of the outer end, and the bottom is located inside the mounting bracket; the bottom of the tightening screw includes an external hexagonal surface, which allows the operator to rotate the tightening screw by rotating the external hexagonal surface with a wrench, thereby causing the tightening screw to move up and down;

[0010] Furthermore, the clamping device includes clamping blocks; there are multiple clamping blocks; the bottom of each clamping block includes a first mounting base; the first mounting base is mounted on a rotating support base by a pin, allowing the clamping block to rotate axially along the axis of the pin; the sides of the clamping block are arc-shaped, and the bottom includes a base plate; the base plates of the clamping blocks can be joined together to form a circle; each clamping block includes multiple inner edges; the inner edges can be hollow or solid; all the clamping blocks can be combined to form a cylinder with an open top; when the bearing moves downward, the outer ring of the bearing contacts the inner edges of the clamping block, and pressure is applied to each inner edge through the bearing, causing the clamping block to rotate around the pin axis until the head mold is clamped;

[0011] In a specific embodiment of the present invention, each clamping block has two inner edges, which are symmetrically arranged along the center line of the clamping block.

[0012] In a specific embodiment of the present invention, three clamping blocks are included;

[0013] A second aspect of the present invention provides a head mold clamping method, specifically including the following steps:

[0014] Step 1: Insert the head mold clamping device of the present invention into the head mold from below in the initial state until the device can no longer move upward;

[0015] Step 2: The operator uses a hexagonal socket wrench to rotate the outer hexagonal face of the tightening screw. The tightening screw moves downward, and the outer ring of the bearing contacts the inner edge of the clamping block. The bearing applies pressure to each inner edge, causing the clamping block to rotate around the axis of the pin until the head mold is clamped.

[0016] Step 3: Install the head mold clamping device of the present invention on different drive mechanisms through the mechanical interface under the mounting bracket to achieve a secure installation of the head mold;

[0017] Step 4: When it is necessary to remove the head mold, the operator uses a hexagonal socket wrench to rotate the outer hexagonal face of the tightening screw in the opposite direction. The tightening screw moves upward, the outer ring of the bearing loosens its contact with the inner edge of the clamping block, and the head mold clamping device of the present invention is pulled downward or the head mold is pulled upward. The clamping block rotates around the axis of the pin to separate the device from the head mold.

[0018] By adopting the above solution, the head mold clamping device disclosed in this invention has the following advantages:

[0019] (1) The head mold clamping device of the present invention realizes that the head mold orientation remains unchanged when the clamping device tightens the head mold, and solves the problem that the head mold neck inner contour shape is different and cannot adapt to the self-adaptation.

[0020] (2) The head mold clamping device of the present invention has a bearing outer ring that contacts the clamping block and remains relatively stationary, and a tightening screw that is relatively fixed to the bearing inner ring, keeping the head mold orientation unchanged, thus achieving smooth tightening force with almost no friction during the tightening process of the head mold;

[0021] (3) The head mold clamping device of the present invention has a design in which the clamping blocks are evenly distributed around the circumference and are subjected to tension and compression of the head mold, which can adapt to various irregular neck shapes and different sizes of head molds.

[0022] (4) The head mold clamping device of the present invention can adapt to various neck irregularities and different sizes of head molds. Users do not need to customize head molds with uniform mechanical interfaces separately. They can directly purchase and use them on the market, which can reduce test costs and shorten the procurement cycle. It is economical and practical.

[0023] (5) The head mold clamping device of the present invention is easy and simple to operate, which increases the user-friendly experience;

[0024] In summary, the head mold clamping device and method disclosed in this invention achieves a constant head mold orientation when the clamping device tightens the head mold, solving the problem of the head mold's neck inner contour shape being inconsistent and unable to adapt. The outer ring of the clamping device's bearing and the pressure block remain relatively stationary, while the tightening screw and the inner ring of the bearing are relatively fixed, maintaining a constant head mold orientation. This results in smooth tightening force with almost no friction during the head mold tightening process. The pressure block is evenly distributed around the circumference, and the design of the tension-pressure head mold can adapt to various head molds with different neck shapes and sizes. Users do not need to customize head molds with a uniform mechanical interface; they can directly purchase and use them on the market, reducing testing costs and shortening the procurement cycle. It is economical, practical, easy to operate, and enhances the user-friendly experience.

[0025] The following will further explain the concept, specific technical solution and technical effects of the present invention in conjunction with specific embodiments, so as to fully understand the purpose, features and effects of the present invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the head mold clamping device of the present invention;

[0027] Figure 2 This is a side view of the internal structure of the head mold clamping device of the present invention;

[0028] Figure 3 This is a schematic diagram comparing the initial state and the clamping state of the head mold clamping device of the present invention;

[0029] Figure 4 This is a schematic diagram of the clamping block of the head mold clamping device of the present invention;

[0030] Figure 5 This is a schematic diagram of the head mold mounting base of the head mold clamping device of the present invention;

[0031] Figure 6 This is a schematic diagram of the head mold clamping device of the present invention and the inside of the head mold neck during head mold installation;

[0032] Figure 7 This is a schematic diagram of the actual use of the head mold clamping device of the present invention;

[0033] In the diagram, 1. Head mold mounting base; 2. Mounting frame; 3. Mounting screw; 4. Tightening nut; 5. Tightening screw; 6. Bearing shaft; 7. Bearing; 8. Fixing screw; 9. Clamping block; 10. First mounting base; 11. Rotary support base; 12. Inner edge; 13. Pin.

[0034] Figure 3 In the middle, the left side shows the initial state of the head mold clamping device of the present invention; the right side shows the clamping state of the head mold clamping device of the present invention. Detailed Implementation

[0035] The following describes several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, which are described exemplarily, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0036] If there are experimental methods that do not specify the conditions, they are usually carried out according to the standard conditions, such as the relevant instructions or manuals.

[0037] like Figures 1-5 As shown, a head mold clamping device of the present invention includes a head mold mounting base 1, a mounting bracket, a clamping device, and a tightening device; the top of the mounting bracket is fixedly connected to the head mold mounting base 1; the top of the head mold mounting base 1 is connected to the clamping device; the tightening device passes through the middle of the head mold mounting base 1 and the mounting bracket.

[0038] The head mold mounting base 1 includes a rotating support base 11 at its top; the head mold mounting base 1 includes a cavity inside; the head mold mounting base 1 includes an outer rotary curved surface;

[0039] The mounting bracket includes a mounting frame 2 and mounting screws 3; the bottom of the mounting frame 2 includes four openings for the installation of four mounting screws 3; the inner walls on both sides of the mounting frame 2 include protruding rods for support; the top of the mounting frame 2 includes an opening for the passage of a tightening device.

[0040] The tightening device includes a tightening nut 4, a tightening screw 5, a bearing shaft 6, a bearing 7, and a fixing screw 8. The tightening nut 4 is installed at the connection between the mounting bracket and the head mold mounting base 1, and at the middle of the tightening screw 5, fixing the relative positions of the mounting bracket, the tightening screw 5, and the head mold mounting base 1. The inner ring of the bearing 7 is installed on the bearing shaft 6. The bearing shaft 6 and the tightening screw 5 are fixed together by the fixing screw 8, with no relative movement. The tightening screw 5 passes through the middle of the head mold mounting base 1 from the top of the outer side, and its bottom is located inside the mounting bracket. The bottom of the tightening screw 5 includes an outer hexagonal surface, which allows the operator to rotate the tightening screw 5 by rotating the outer hexagonal surface with a wrench, thereby causing the tightening screw 5 to move up and down.

[0041] The clamping device includes clamping blocks 9; there are 3 clamping blocks 9; the bottom of each clamping block 9 includes a first mounting base 10; the first mounting base 10 is mounted on a rotating support base 11 via a pin 13, allowing the clamping block 9 to rotate axially along the axis of the pin 13; the sides of each clamping block 9 are arc-shaped, and the bottom includes a base plate; the base plates of each clamping block 9 can be joined together to form a circle; each clamping block 9 includes multiple inner edges 12; the inner edges 12 can be hollow or solid; all clamping blocks 9 can be combined to form a cylinder with an open top; when the bearing 7 moves downward, the outer ring of the bearing 7 contacts the inner edges 12 of the clamping block 9, and the bearing 7 applies pressure to each inner edge 12, causing the clamping block 9 to rotate around the axis of the pin 13 until the head mold is clamped.

[0042] Each clamping block 9 has two inner edges 12, which are symmetrically arranged along the center line of the corresponding clamping block 9;

[0043] Example 1: Using the head mold clamping device of the present invention to clamp the head mold.

[0044] Initial state as Figure 3 As shown in the left figure,

[0045] Step 1: Insert the head mold clamping device of the present invention into the head mold from below in the initial state until the device can no longer move upward;

[0046] Step 2: The operator uses a hexagonal socket wrench to rotate the outer hexagonal face of the tightening screw. The tightening screw moves downwards, and the outer ring of the bearing contacts the inner edge of the clamping block. The bearing applies pressure to each inner edge, causing the clamping block to rotate around the pin's axis until the head mold is clamped; achieving the desired result. Figure 6 The clamping effect shown;

[0047] At this point, the overall clamping effect is as follows: Figure 7 As shown;

[0048] Step 3: Install the head mold clamping device of the present invention on different drive mechanisms through the mechanical interface under the mounting bracket to achieve a secure installation of the head mold;

[0049] When the head mold needs to be replaced, the operator uses a hexagonal socket wrench to rotate the outer hexagonal face of the tightening screw in the opposite direction. The tightening screw moves upward, the outer ring of the bearing loosens its contact with the inner edge of the clamping block, and the operator pulls the head mold clamping device downward or pulls the head mold upward. The clamping block rotates around the pin's axis, separating from the head mold, as shown in the image. Figure 3 The initial effect is shown in the left image; then replace with the next head model and repeat the above steps;

[0050] In summary, the head mold clamping device and method disclosed in this invention achieves a constant head mold orientation when the clamping device tightens the head mold, solving the problem of inconsistent adaptation due to varying inner contour shapes of the head mold neck. The outer ring of the clamping device bearing remains relatively stationary in contact with the pressure block, and the tightening screw is relatively fixed to the inner ring of the bearing, maintaining a constant head mold orientation. This ensures smooth tightening force with almost no friction during the head mold tightening process. The pressure block is evenly distributed around the circumference, and the design of the tension-pressure head mold can adapt to various head molds with irregular neck shapes and different sizes. Users do not need to customize head molds with uniform mechanical interfaces; they can directly purchase and use them on the market, reducing testing costs and shortening the procurement cycle. It is economical, practical, easy to operate, and enhances the user-friendly experience.

[0051] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A headform clamping device, characterised in that, The head mold mounting seat (1) is fixedly connected to the top of the mounting support, and the head mold mounting seat (1) is connected to the top of the pressing device; the tightening device penetrates the head mold mounting seat (1) and the middle part of the mounting support; The top of the head mold mounting seat (1) comprises a rotary support seat (11), and the inside of the head mold mounting seat (1) comprises a cavity; the head mold mounting seat (1) comprises a rotary curved surface on the outside; The tightening device comprises a tightening nut (4), a tightening screw (5), a bearing shaft (6), a bearing (7) and a fixing screw (8); the tightening nut (4) is installed at the connection between the mounting support and the head mold mounting seat (1) and the middle part of the tightening screw (5), so as to fix the relative positions of the mounting support, the tightening screw (5) and the head mold mounting seat (1); the inner ring of the bearing (7) is installed on the bearing shaft (6); the bearing shaft (6) and the tightening screw (5) are fixed as a whole by the fixing screw (8) and do not move relative to each other; the tightening screw (5) penetrates from the middle part of the head mold mounting seat (1) to the top end of the outside of the head mold mounting seat (1) and is located at the inside of the mounting support at the bottom; the bottom of the tightening screw (5) comprises an outer hexagonal surface, which is convenient for an operator to rotate the outer hexagonal surface by a wrench to rotate the tightening screw (5), so as to move the tightening screw (5) up and down; The bottom of the mounting support comprises a mechanical interface, which can be installed on different driving mechanisms; The pressing device comprises a plurality of pressing blocks (9); the bottom of each pressing block (9) comprises a first mounting seat (10); the first mounting seat (10) is installed on the rotary support seat (11) by a pin (13), so that the pressing block (9) can rotate axially along the shaft of the pin (13); the side of the pressing block (9) is arc-shaped, and the bottom comprises a bottom plate; the bottom plates of the pressing blocks (9) can be combined to form a circular shape; each pressing block (9) comprises a plurality of inner edges (12); the inner edges (12) can be hollow or solid; all the pressing blocks (9) can be combined to form a cylindrical body with an open top.

2. The hairpiece holding device of claim 1, wherein The mounting support comprises a mounting frame (2) and mounting screws (3); the bottom of the mounting frame (2) comprises four openings for the installation of the four mounting screws (3); the inner walls on both sides of the mounting frame (2) comprise protruding rod bodies for supporting; the top of the mounting frame (2) comprises an opening for the passage of the tightening device.

3. The hairpiece holding device of claim 1, wherein Each pressing block (9) has two inner edges (12) arranged symmetrically along the center line of the pressing block (9).

4. The hairpiece holding device of claim 1, wherein The pressing device comprises three pressing blocks (9).

5. A headform clamping method, characterized by, The head mold clamping device according to any one of claims 1-4, specifically comprising the following steps: Step 1, the head mold clamping device is inserted into the inside of the head mold from below the head mold in the initial state until the device cannot continue to move upward; Step 2, the operator rotates the outer hexagonal surface of the tail end of the tightening screw (5) through a hex socket wrench, the tightening screw (5) moves downward, the outer ring of the bearing (7) contacts the inner edges (12) of the compression block (9), the bearing (7) exerts pressure on each inner edge (12), allowing the compression block (9) to perform axial rotational movement around the shaft of the pin, until the head mold is compressed tightly; Step 3, install the head mold clamping device on different driving mechanisms through the mechanical interface below the installation bracket, to achieve firm installation of the head mold; Step 4, when the head mold needs to be removed, the operator reversely rotates the outer hexagonal surface of the tail end of the tightening screw (5) through a hex socket wrench, the tightening screw (5) moves upward, the outer ring of the bearing (7) loosens the contact with the inner edges (12) of the compression block (9), the head mold clamping device is pulled downward or the head mold is pulled upward, the compression block (9) performs axial rotational movement around the shaft of the pin (13), achieving separation of the device and the head mold.

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