JP2005095970A - Scraper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To double the life of a tool by applying measures for the wear of the scraping/abutting edge with a sintered hard alloy to the tip end of the spatula-like part, in a scraping tool (hand tool called a chaplet bar or a scraper, and attachment of a vibrator) for scraping and stripping coating, stains, rust and welding spatters, etc., on a metallic surface. <P>SOLUTION: In the scraper, a sintered hard alloy body 3 which serves as a scraping/abutting edge 33 in two parts at the tip end of the front and rear sides is brazed, or mounted as a detachable component, at the tip end of the spatula part 1 having a handle 2 in the base. The scraper is designed such that, even if one abutting edge 33 is worn or broken, the other edge 33 can perform the scraping operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a peeling tool such as a scraper or a keel rod that scrapes off a metal surface such as painting, dirt, rust, and spatter of welding.

  As the peeling tool, a manual tool and a machine tool are known, and the former is a tool in which a peeling blade body is provided at the tip of a spatula-shaped portion and a handle handle portion is formed at the base (Patent Document 1). This is an attachment for a vibration tool in which a peeling blade body is provided at the tip of a spatula-shaped portion and an equipment mounting handle is formed at the base (Patent Document 2).

  In addition, a cemented carbide blade is adopted at the tip of the peeling blade, and the mounting shape is mounted in a plate shape on the lower surface of the tip of the blade (Patent Document 1) or mounted in a shape added to the tip. (Patent Document 2).

Japanese Patent Laid-Open No. 9-23988. JP-A-8-90454.

  A peeling tool using the above-mentioned cemented carbide has an acute angle tip of 45 degrees or less. Particularly, cemented carbide is a sintered alloy, and since it is brittle, the tip is sharp and easily broken. And if a front-end | tip part is worn out or a defect | deletion, the peeling effect of the said peeling tool will reduce.

  Accordingly, the present invention focuses on the fact that the cutting edge of the cemented carbide alloy exhibits a sufficient peeling function even without sharpening the cutting edge angle to a small angle, and the peeling of the novel structure that reduces the wear rate of the instrument to 1/2. A tool is proposed.

  The peeling tool according to the present invention is characterized in that a cemented carbide body in which the front and back end edges serve as contact corners for peeling is provided at the tip of a spatula-like portion in which a handle portion is connected to the base portion. Is.

  Therefore, the peeling tool is used as a manual tool or a vibration tool, and is peeled off by rubbing a deposit such as a metal surface at the peeling contact corner of the cemented carbide body. Since there are two places on the front and back, even if one is worn or damaged, the other can be peeled off, so that it has twice the durability of the conventional instrument. Moreover, since the contact corner is not sharp, durability against defects is also increased.

  Next, an embodiment of the present invention will be described. 1 and 2 show a first embodiment of the present invention, which is an attachment attached to a vibration tool main body (not shown).

  The basic configuration is similar to the conventional one, in which the base of the spatula-shaped portion 1 is a mounting handle portion 2 having a shape adapted to be mounted on the vibration tool body. The hard alloy body 3 is brazed.

  The cemented carbide body 3 is formed by sintering into a predetermined shape, and the shape is a rectangular rod-like body having a length corresponding to the tip width of the spatula-like portion 1, and the tip surface 31 is flat and front and back. Is formed perpendicularly to the tip surface 31 and formed on the back surface with a recess 32 into which the tip of the spatula-shaped portion 1 is fitted. The part 1 and the cemented carbide body 3 are integrated by brazing.

  Thus, the attachment is attached to the vibration tool main body, and the metal surface A such as the object to be cleaned is attached to the corner portion (the peeling contact corner portion) 33 with the front and back surfaces of the tip surface 31 of the cemented carbide body 3. By abutting and moving the vibration tool to move the abutting position, the deposit on the metal surface A is peeled off (scraped off).

  In particular, since the contact portion of the cemented carbide body 3 has an angle (90 degrees), it is possible to remove dirt and rust without any trouble. In addition, the thickness of the spatula-shaped portion 1 and the cemented carbide body 3 may be matched without forming the concave portion 32 in particular.

  Next, FIGS. 3 and 4 show a second embodiment of the present invention, which is an example applied to a keren rod as a manual tool. As in the conventional structure, the basic configuration is such that the base of the spatula-shaped portion 4 is the handle handle 5 and the cemented carbide body 6 is brazed to the tip of the spatula-shaped portion 4.

  The cemented carbide body 6 is the same as that of the first embodiment. In particular, the tip surface 61 is formed in a concave portion so that a corner portion (contact corner portion for peeling) 62 with the front and back surfaces is formed. It is an acute angle.

  Thus, as a manual tool, the metal surface A such as the object to be cleaned is brought into contact with the corner 62 (peeling contact corner) of the front end surface 61 of the cemented carbide body 6 with the force of the hand. The deposits on the surface A are peeled off (scraped off), and since the contact corner portion 62 of the cemented carbide body 6 is formed with an acute angle, an effective scraping operation can be performed.

  Next, FIG. 5 and FIG. 6 show a third embodiment of the present invention, and without brazing the cemented carbide body 6 directly to the tip of the spatula-like portion 4 as in the first and second embodiments, A cemented carbide body part is used as a detachable part 7, and the tip of the spatula-like part 4 is formed in an attachment receiving part 8 to which the part can be attached.

  That is, the cemented carbide part 7 is formed by brazing a cemented carbide body 72 to both side edges of the elongated rod-shaped attachment part 71, and the attachment part 71 has a front and rear width that can correspond to an attachment receiving part 8 described later. In addition, the cemented carbide body 72 may have a contact angle portion of 90 degrees as in the first embodiment, or may have an acute angle as in the second embodiment.

  The attachment receiving portion 8 is formed at the tip of the spatula-shaped portion 4, and is specifically configured so long as one cemented carbide body 72 in the cemented carbide part 7 is held at the tip of the spatula-shaped portion 4. For example, as shown in the drawing, a holding part 81 having a storage step at the tip of the spatula-like part 4, a holding / removing body 82 corresponding to the holding part 81, and a holding / removing body 82 are held. The cemented carbide part 7 is clamped by the clamping part 81 and the clamping attachment / detachment body 82.

  Accordingly, the cemented carbide part 7 has the front and back and front and back cemented carbide contact corners 73, and the contact corners 73 can be effectively scraped off, and the contact corners 73 are damaged or worn. Can be used again by changing the mounting of the carbide parts 7 before and after, and when the four contact corners cannot be used, the carbide parts 7 can be replaced. There is an advantage that the cemented carbide portion can be a consumable part compared to the first and second embodiments.

1 is an overall view of a first embodiment of the present invention. Explanatory drawing of the same use condition (peeling work). The whole figure of a second embodiment of the present invention. Explanatory drawing of the same use condition (peeling work). The whole figure of the cemented carbide parts of a third embodiment of the present invention. Explanatory drawing of the same use state (mounting and peeling work of cemented carbide parts).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,4 Spatula-shaped part 2 Mounting pattern part 5 Handle pattern part 3,6 Cemented carbide body 31,61 Tip surface 32 Fitting recessed part 33,62 Contact corner part 7 Carbide component 71 Mounting part 72 Cemented carbide body 73 Abutting corner portion 8 Mounting receiving portion 81 Clamping portion 82 Clamping detachable body 83 Clamping screw

Claims (8)

  A peeling tool characterized in that a cemented carbide body having front and rear surface leading edges serving as contact corners for peeling is provided at the tip of a spatula-like portion having a handle portion continuously provided on a base portion.   The peeling tool according to claim 1, wherein a cemented carbide body is brazed to the tip of the spatula portion.   The peeling tool according to claim 1, wherein a cemented carbide body is brazed to the tip of the mounting portion, and a mounting receiving portion for mounting the mounting portion is provided at the tip of the spatula-shaped portion.   4. The peeling tool according to claim 3, wherein a cemented carbide body is brazed to both side edges of the elongated rod-shaped mounting portion, and the mounting receiving portion is structured to sandwich the cemented carbide body on one edge side with the mounting portion.   The peeling tool according to any one of claims 1 to 4, wherein a contact angle portion for peeling the front and back is 90 degrees.   The peeling tool according to any one of claims 1 to 4, wherein a tip end surface of the cemented carbide body is a concave portion, and a contact angle portion for peeling the front and back surfaces is an acute angle.   The peeling tool according to any one of claims 1 to 6, wherein the handle portion is a manual tool using the handle portion as a handle handle portion. The peeling tool according to any one of claims 1 to 6, wherein the handle portion is an attachment portion of the vibration tool with the handle portion attached to the vibration tool body.

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