File for sand core finishing

Abstract

The utility model discloses a sand core trimming file which comprises a tool body, the tool body comprises a tip section, a tool body and a connecting section, the connecting section and the tip section are distributed at the upper end and the lower end of the tool body, a handheld structure is arranged on the tool body, and the width size of the tip section is gradually reduced from the middle of the tool body to the end of the tool body. The tip section comprises a file blade and a file head, and a sand surface structure is detachably arranged on the outer ring of the connecting section; the trimming device has the advantages of being good in trimming effect, convenient to maintain and use and simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of files, and particularly relates to a file for core trimming. Background Art

[0002] There are many fine strip-shaped cutter teeth on the surface of a file, which is a manual tool for filing the surface of a workpiece smooth. It is usually used for micro-processing of the surfaces of metals, woods, and leathers. The application of files is very early. The oldest file found so far is a bronze file in Egypt around 1500 BC.

[0003] Modern files are generally processed from carbon steel through processes such as rolling, forging, annealing, grinding, tooth chopping, and quenching.

[0004] Since there is no special filing tool for the flow marks of core coatings, general files can only be used for core trimming. However, traditional steel files have poor effects when used to remove flow marks. When the force is insufficient, the flow marks are difficult to remove, while when the force is too large, it is easy to cause damage to the core and easy to cause wear of the file. In practical applications, files are consumable tools for core making and the consumption is large.

[0005] The problems of the prior art are that in the trimming process, the tool body of a general file is easy to wear, which affects the service life of the file and the quality of the core. After wear, the processing effect of the file is poor, the operation is inconvenient, and it affects the use. After the file is severely worn, it can only be replaced as a whole, resulting in an increase in cost. In order to improve the trimming quality of the file, on the basis of maintaining the advantages of the original file, it is very necessary to design a file for core trimming. Summary of the Invention

[0006] The purpose of the utility model is to solve the problems existing in the prior art, and provide a file for core trimming, which has the advantages of good trimming effect, convenient maintenance and use, and simple structure.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a file for core trimming, including a tool body, the tool body includes a tip section, a blade body, and a connecting section. The connecting section and the tip section are distributed at the upper and lower ends of the blade body. A handheld structure is arranged on the blade body. The width dimension of the tip section gradually decreases from the middle of the tool body to the end. The tip section includes a file blade and a file head. A sand surface structure is detachably arranged on the outer circle of the connecting section.

[0008] In the above solution, the blade body in the middle of the tool body connects the tip section and the connecting section. The handheld structure on the blade body is used for holding by hand, which is convenient for operating the file. The file blade and the file head of the tip section can be used for scraping burrs. The sand surface structure is detachably arranged on the outer circle of the connecting section, which is convenient for removing the flow marks of the coating. After the sand surface structure is worn, it can be conveniently disassembled and replaced.

[0009] Furthermore, the tool body is of a metal structure, and the handheld structure includes a flexible cushion layer provided on the outer circle of the blade body.

[0010] The metal structure has stable performance and is convenient for dressing operations. A flexible cushion layer is provided on the outer circle of the blade body to facilitate handheld operation.

[0011] Furthermore, a first limiting portion is provided on the blade body, and the first limiting portion corresponds to the upper and lower ends of the handheld structure in position.

[0012] The first limiting portion is provided to limit the upper and lower end faces of the handheld structure, preventing the handheld structure from sliding up and down and making the connection of the handheld structure stable.

[0013] Furthermore, a hot melt adhesive is provided between the sand surface structure and the connection section, and the length of the sand surface structure accounts for 1 / 5 - 1 / 4 of the length of the tool body.

[0014] The connection between the sand surface structure and the connection end is achieved through the hot melt adhesive. When the sand surface structure is worn, the sand surface structure can be replaced by heating the hot melt adhesive. The setting of the length of the sand surface structure ensures that there is enough sand surface structure for sand core grinding and dressing.

[0015] Furthermore, a second limiting portion is provided on the blade body, and the second limiting portion corresponds to the upper end of the sand surface structure in position.

[0016] The upper end of the sand surface structure is limited by the second limiting portion, which is convenient for the connection and positioning of the sand surface structure.

[0017] Furthermore, the second limiting portion includes an annular protrusion provided on the blade body.

[0018] The sand surface structure is positioned by the annular protrusion structure, which has a simple structure and is convenient to manufacture.

[0019] Furthermore, the cross-sections of the blade body and the connection section are rectangular, and the thickness of the tool body does not exceed 5 mm.

[0020] The cross-sections of the blade body and the connection section are rectangular, and the thickness of the tool body does not exceed 5 mm, which has a simple structure and is convenient for operation.

[0021] Furthermore, the file blades are symmetrically arranged on both sides of the file head, and both the file head and the file blades are of a flat and blunt structure.

[0022] The file blades are symmetrically arranged on both sides of the file head, which is convenient for use. Both the file head and the file blades are of a flat and blunt structure, avoiding accidental injuries caused by overly sharp edges.

[0023] Compared with the prior art, the beneficial effects of the present utility model are:

[0024] 1. By detachably arranging a sanded surface structure on the connecting section of the tool body, the worn sanded surface structure can be replaced in time, ensuring the grinding effect of the file, being convenient to use, and cooperating with the file blade and file head at the tip section to meet the use requirements for core trimming and ensuring the trimming effect.

[0025] 2. By arranging a hot-melt adhesive on the connecting section to detachably bond the sanded surface structure, it is convenient to disassemble and replace the sanded surface structure after wear, facilitating maintenance and use; the tool body part can be reused, reducing the usage cost.

[0026] 3. By arranging a handheld structure, it is convenient to hold, and cooperating with the first limiting part and the second limiting part to limit the handheld structure and the sanded surface structure, the overall structure is simple, convenient to use, and has stable performance. Description of the Drawings

[0027] Figure 1 The front view of the structure of a file for core trimming according to Embodiment 1 of the present utility model;

[0028] Figure 2 The schematic diagram of the structure of the sanded surface structure in Embodiment 1 of the present utility model;

[0029] Figure 3 The left view of the structure of a file for core trimming according to Embodiment 1 of the present utility model;

[0030] Figure 4 The front view of the structure of a file for core trimming according to Embodiment 2 of the present utility model;

[0031] In the figure: 1, tip section; 2, blade body; 3, connecting section; 4, flexible cushion layer; 5, file blade; 6, file head; 7, sanded surface structure; 8, first limiting part; 9, second limiting part. Detailed Embodiment

[0032] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. In the description of the present utility model, it should be noted that the terms front, back, left, right, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product of this utility model is usually placed. It is only for the convenience of describing the present utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0033] Embodiment 1

[0034] As shown Figures 1-3 in the figure, a file for core trimming includes a tool body. The tool body includes a tip section 1, a blade body 2, and a connecting section 3. The connecting section 3 and the tip section 1 are distributed at the upper and lower ends of the blade body 2. A handheld structure is provided on the blade body 2. The width dimension of the tip section 1 gradually decreases from the middle of the tool body towards the end. The tip section 1 includes a file edge 5 and a file tip 6. A sand surface structure 7 is detachably provided on the outer ring of the connecting section 3.

[0035] In the above solution, the blade body 2 is arranged in the middle of the tool body to connect the tip section 1 and the connecting section 3. The handheld structure on the blade body 2 is used for holding by hand, which is convenient for operating the file. The file edge 5 and the file tip 6 of the tip section 1 can be used for scraping burrs. The sand surface structure 7 is detachably provided on the outer ring of the connecting section 3, which is convenient for removing paint flow marks. After the sand surface structure 7 is worn, it can be conveniently disassembled and replaced.

[0036] The tip section 1 is a structure that narrows from near the middle of the file towards the upper part, and the size becomes smaller towards the top. The file edge 5 has a certain slope to facilitate scraping burrs, but it is not fully sharpened to avoid accidental injury. The middle part of the file is appropriately polished to increase the roughness so that the tape is not easy to slip off. The lower part of the file is set as a straight section to facilitate bonding the sand surface structure 7, which is suitable for removing paint flow marks. The front and rear structures of the tool body are the same, which is convenient for use.

[0037] Both the blade body 2 and the connecting section 3 have a rectangular cross-section. The tool body is 250 mm long, the blade body 2 and the connecting section 3 are 15 mm wide and 1 mm thick, and the tip section 1 is narrower towards the file tip.

[0038] The sand surface structure 7 is made by bonding sandpaper on the connecting section 3 of the file. The sandpaper corresponds to the length of the connecting section 3 and is bonded by hot melt adhesive. The vertical length of the sand surface structure 7 is 50 mm. The sandpaper is wear-resistant sandpaper, which is cut and formed and then wrapped around the outer ring of the connecting section 3.

[0039] The sand surface structure 7 is a replaceable structure. After being worn through use, it can be directly heated to melt the hot melt adhesive, and then a new sandpaper can be bonded again.

[0040] The tape of the handheld structure can be wound around the blade body 2 in a full-wrap or cross-wrap manner. The vertical length of the handheld structure is 60 mm and the thickness is more than 3 mm to achieve a protective effect. The handheld structure can also be a polished surface structure provided on the blade body 2.

[0041] The tip structure includes a file edge 5 and a file tip, both of which are directly ground from a stainless steel sheet. Both the front and back sides need to be ground to present a certain inclined surface. The edge is not too sharp, and the edge thickness is preferably 0.4 mm - 0.7 mm to avoid accidental injury and meet the trimming requirements.

[0042] The vertical length of the tip structure is 100 mm, and the length can be adjusted according to the actual use effect. The file blade 5 and the file tip need to be polished regularly to avoid wear and affect the use.

[0043] The file for core trimming provided by the utility model adopts the replaceable sand surface structure 7. When the sandpaper is worn, the characteristics of the hot melt adhesive can be fully utilized to replace the sandpaper in a timely and convenient manner without affecting the normal use of the file, and the use cost is relatively low. This file is especially suitable for removing the flow marks of the core coating. Compared with the traditional steel file, this design has high efficiency in removing flow marks, is easy to operate, and saves costs.

[0044] Furthermore, the tool body is of a metal structure, and the handheld structure includes a flexible cushion layer 4 arranged on the outer circle of the tool body 2.

[0045] The metal structure has stable performance and is convenient for trimming operations. A flexible cushion layer 4 is arranged on the outer circle of the tool body 2 to facilitate handheld operation.

[0046] The tool body is made of stainless steel, and the flexible cushion layer 4 includes a rubber cushion layer or a tape wound around the outer circle of the tool body 2.

[0047] Furthermore, a hot melt adhesive is arranged between the sand surface structure 7 and the connecting section 3, and the length of the sand surface structure 7 accounts for 1 / 5 - 1 / 4 of the length of the tool body.

[0048] The connection between the sand surface structure 7 and the connecting end is realized through the hot melt adhesive. When the sand surface structure 7 is worn, the sand surface structure 7 can be replaced by heating the hot melt adhesive. The length setting of the sand surface structure 7 ensures that there is enough sand surface structure 7 for core grinding and trimming.

[0049] The sand surface structure includes sandpaper, and the length of the sand surface structure 7 is preferably 1 / 5 of the length of the tool body.

[0050] Furthermore, the cross sections of the tool body 2 and the connecting section 3 are rectangular, and the thickness of the tool body does not exceed 5 mm.

[0051] The cross sections of the tool body 2 and the connecting section 3 are rectangular, and the thickness of the tool body does not exceed 5 mm, with simple structure and convenient operation.

[0052] Preferably, the thickness of the tool body does not exceed 2 mm.

[0053] Furthermore, the file blades 5 are symmetrically arranged on both sides of the file head 6, and both the file head 6 and the file blades 5 are of flat and blunt mouth structures.

[0054] The symmetric arrangement of the file blades 5 on both sides of the file head 6 is convenient for use. Both the file head 6 and the file blades 5 are of flat and blunt mouth structures, avoiding too sharp edges and causing accidental injuries.

[0055] The cutting edges of the file head 6 and the file blade 5 are directly ground from stainless steel sheets, and both the front and back sides need to be ground to present a certain inclined surface, as long as the trimming requirements are met.

[0056] Embodiment 2

[0057] As Figure 4 shown, a file for core trimming in this embodiment is further modified as follows on the basis of Embodiment 1:

[0058] Further, a first limiting portion 8 is provided on the tool body 2, and the first limiting portion 8 corresponds to the upper and lower ends of the handheld structure.

[0059] The first limiting portion 8 is provided to limit the upper and lower end faces of the handheld structure, avoiding the up and down sliding of the handheld structure and making the connection of the handheld structure stable.

[0060] Further, a second limiting portion 9 is provided on the tool body 2, and the second limiting portion 9 corresponds to the upper end of the sand surface structure 7.

[0061] The upper end of the sand surface structure 7 is limited by the second limiting portion 9, which is convenient for the connection and positioning of the sand surface structure 7.

[0062] Further, the second limiting portion 9 includes an annular protrusion provided on the tool body 2.

[0063] The sand surface structure 7 is positioned by the annular protrusion structure, which has a simple structure and is convenient for manufacturing.

[0064] The cross-section of the annular protrusion is rectangular, and the height of the annular protrusion does not exceed the height of the grinding surface of the sandpaper. The first limiting portion 8 is also of an annular protrusion structure.

[0065] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A file for sand core dressing, characterized in that: The utility model comprises a tool body, wherein the tool body comprises a tip section, a blade body and a connecting section, wherein the connecting section and the tip section are distributed at the upper and lower ends of the blade body, the blade body is provided with a hand-held structure, the tip section gradually decreases in width from the middle part to the end part of the tool body, the tip section comprises a file blade and a file head, and the outer ring of the connecting section is detachably provided with a sand surface structure.

2. The file for sand core dressing according to claim 1, characterized in that: The tool body is a metal structure, and the handheld structure comprises a flexible cushion layer arranged on the outer circle of the blade body.

3. The file for sand core dressing according to claim 1, characterized in that: A limiting portion 1 is arranged on the blade, and the limiting portion 1 corresponds to the upper and lower ends of the hand-held structure.

4. The file for sand core dressing according to claim 1, characterized in that: Hot melt adhesive is arranged between the sand surface structure and the connecting section, and the length of the sand surface structure accounts for 1 / 5-1 / 4 of the length of the tool body.

5. The file for sand core dressing according to claim 1, characterized in that: A second limiting portion is arranged on the blade, and the second limiting portion corresponds to the upper end position of the sand surface structure.

6. The file for sand core dressing according to claim 5, characterized in that: The second limiting portion includes an annular protrusion arranged on the blade body.

7. The file for sand core dressing according to claim 1, characterized in that: The cross-sections of the blade body and the connecting section are rectangular, and the thickness of the tool body does not exceed 5 mm.

8. The file for sand core dressing according to claim 1, characterized in that: The file blades are symmetrically arranged on both sides of the file head, and the file head and the file blades are both flat and blunt structures.

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