RU2094848C1 - Instrument for applying label on car - Google Patents

Abstract

FIELD: criminal protection, in particular, application of theft protection signs on assemblies of car. SUBSTANCE: instrument is designed as holder and hard-alloy insertion which working piece is designed as at least one plunger 5 which applies alphanumeric signs. Encoded point regions for shape of each sign on working piece of plunger 5 have at least one or several sharpened conic spikes or polyhedral pyramids which extend over upper working edge of sign to be applied. Device provides possibility to identify car after alternation of its label which was applied by manufacturer. EFFECT: increased protection of source identification label against alternations and simplified design of instrument for its application. 5 dwg

Description

 The invention relates to forensics and can be used when applying a protective marking on the units of the vehicle, providing the ability to identify the vehicle when changing its markings applied at the factory.

 It is known that when searching for a car and establishing its owner, it is especially important to establish registration numbers on marked units of the vehicle: on its engine and body. Such numbers are applied at specific places by mechanical means: knurling, engraving and impact marking using punches, the working part of which is made in the form of one or more embossed letters, numbers, symbols, or combinations thereof. When a vehicle is stolen and stolen, the factory numbers (its primary marking), by which its ownership to a specific owner can be established, are destroyed (for example, by sawing or cutting), and a secondary (repeated) marking is applied at the same place, having a different combination of digital and letter designations of signs.

 A known method of marking a vehicle, proposed as a means of additional protective marking after applying the serial number on the unit of the vehicle. This method involves the use of a coinage with a warhead in the form of a blunt needle for marking at double the depth of the broken metal layer in coded point regions along the contour of the mark. Due to this, when restoring an identifiable number after removal by mechanical means (cutting, cutting) to the main depth of the marking, it is possible to identify the number by coded dotted areas, the location of which within each character is known.

 However, the use of coinage in this method is associated with a number of disadvantages. First of all, it’s rather difficult to accurately set the warhead of the coin in front of the corresponding coding area of the mark already applied. To perform this work manually requires a very high qualification of the employee, hardness of the hand and good vision. In addition, the force of impact of the hammer on the hammer head should be stable during working time, since the depth of applying additional protective marking depends on this. For the possible mechanization of the application of protective marking, the use of expensive precision equipment will be required, providing increased accuracy of the guidance coordinates of the warhead of the coinage. In these cases, the use of coinage both manually and with the help of a robotic installation, the application of additional protective marking is carried out sequentially, which reduces labor productivity due to time-consuming.

The prototype of the selected device for the mechanical marking of metal parts, the most common when marking the units of the vehicle. Such a device is a punch, the end face 1 of the working part of which (Fig. 1 2) is made in the form of one or more embossed letters, numbers, symbols or combinations of 2. The punch can be made integral or composite in the form of a holder and a hard-alloy soldered into it under pressure inserts, for example, from VK-7 or VK-8 alloy. As a rule, when marking mass-produced products, compound punches are used. The holder can be made of carbon steel, for example, grades U7A or U8A, with the hardening of its tail to a hardness of HRC 40 HRC 45. The profile of embossed letters, numbers and symbols can be pointed, flat, round and unfolded. The most common in practice are punches with a pointed profile, the angle of sharpening of which in most cases is 90 ^o . Carbide punches provide high quality marking, have high wear resistance. After their use in the metal of the marked part 3, the recess 4 (Fig. 3 4), as a rule, up to 0.5 mm, which corresponds to the relief of the working part of the punch.

 However, from the point of view of ensuring the protection of the marking applied to the product from changes, as well as the possibility of restoring the original sign after changing it, if it is necessary to identify the vehicle, the device selected for the prototype has several disadvantages. The marks obtained during marking have a standard style and font sizes, the same marking depth throughout the profile / up to 0.4 mm /. When it is mechanically removed to a depth of a metal layer that is disturbed by marking, starting from a double marking depth or more, it becomes impossible to restore the original marking. In addition, if the marking is removed to a depth that allows its fragments to be restored by chemical etching, then it becomes difficult to identify the characters from the identified fragments, since it is impossible to establish the belonging of the identified fragment to a particular character, and therefore the set of characters to which the identified fragments may belong is indicated.

 The purpose of the invention is to ensure the reliability of protective marking of vehicle assemblies with a minimum degree of complication of the marking device used and the procedure for handling it.

 The goal is achieved by the fact that on each punch there is one or more pointed spikes located at characteristic points, while each spike has the shape of a cone or a multifaceted pyramid.

 Example. In FIG. 1 shows the marking surface 1 of a standard carbide insert with a pointed profile of sign 2, resulting in depressions on the matrix 3. The difference between the proposed punch 5 with a carbide insert bearing a relief mark 2 is the presence of a pointed cone of a conical or pyramidal shape 6 / Fig. 3, 5 /, which, when used for its intended purpose, leads to the formation in the matrix 3 of a depression 4 of a pointed profile with local recesses 7. The characteristic points of this sign of the unit in which the spikes are located are the points at the beginning and at the end of the sign / Fig. 5/. The spikes can be in the form of a cone or a multifaceted pyramid, which allows you to get prints of various shapes and makes it possible to identify the punch used in marking.

 The use of the described device can be carried out both with manual and mechanized marking. At the same time, it is advisable to label products on solid materials (steel, cast iron) in order to reduce the wear of the studs in two passes: first, mark with the same type of punch of a conventional design (without spikes), then repeat the marking, placing a studded in the groove on the surface of the marked part punch according to this invention. For products made of light materials (aluminum alloys, brass, etc.), marking is carried out, as usual, in one pass.

The proposed device for marking a vehicle provides the following advantages:
protects identification (primary) marking from changes;
simplifies the design of a device for applying protective coding marking;
provides the ability to restore the identification (primary) marking, the relief image of which is destroyed mechanically.

Claims (1)

 A tool for marking a vehicle, consisting of a holder and a carbide insert, the working part of which is made in the form of one or more punches, which are embossed alphabetic and / or digital characters, characterized in that on each puncheon there is one or more pointed spikes located in characteristic points of the sign, with each spike having the shape of a cone or a multifaceted pyramid.

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