RU2176232C2 - Primer calibration pliers-marker - Google Patents

Abstract

FIELD: devices for assembly and marking of initiation means. SUBSTANCE: the primer calibration pliers-marker has a body, squeezing member and a marking member connected to the squeezing member for joint action on the primer, and drive components of the squeezing member. The squeezing member is made in the form of a multi-tab collet having bosses on the tabs facing inside for formation of squeezing beads. The marking member is made in the form of marking rods-marks with spherical working surfaces installed radially in the collet tabs. The primer marker has a body, marking member and drive components of marking member squeezing. The marking member is made in the form of a multi-tab collet provided with marking rods-marks with spherical working surfaces installed radially in the collet tabs. EFFECT: uniform squeezing and clear marking of primers. 2 cl, 2 dwg

Description

 The invention relates to devices for assembling and marking initiation means.

 The connection of detonator capsules with means for transmitting a blast signal (electric igniter, fire-retardant cord and fire-retardant tube) is performed by crimping devices of various designs. These devices differ in forming crimping elements and type of drive.

 Known crimping device containing two pairs of cams, moved by a manual drive [1]. In this case, the cams included in the pairs move towards each other, and the pairs themselves are installed along the detonator axis with offset and mutually perpendicular. This device provides an almost uniform compression sleeve detonator capsule with means for transmitting a blast signal, but does not mark them.

 As a prototype, a crimping numbering device comprising a housing, a crimping element, a marking element connected to the crimping element with the possibility of joint action on the detonator capsule and the compression drive parts of the crimping element [2] is taken. Uneven loading of the walls of the sleeve of the detonator capsule that occurs during the operation of this crimping numbering device causes the sleeve to bend, form longitudinal folds and cracks leading to leaks, and explosive particles entering the cracks can cause unauthorized explosions.

 The objective of the invention is to obtain uniform crimping and clear marking of the detonator capsule when it is connected to the means for transmitting a blast signal.

 This task is achieved by the fact that in the crimp-marker device of the detonator caps, comprising a housing, a crimp element, a marking element connected to the crimp element with the possibility of joint action on the detonator capsule and the compression drive parts of the crimp element, the crimp element is made in the form of a multi-petal collet having on the petals facing inward protrusions to form compression zigzag, and the marking element is made in the form of marking rods-stamps with spherical working surfaces, installed detecting collet radially in the petals.

 According to the second variant, the marker of detonator capsules, comprising a housing, a marking element and details of the compression drive of the marking element, the marking element is made in the form of a multi-petal collet equipped with marking rods with spherical working surfaces mounted radially in the petals of the collet.

 In FIG. 1 shows a cross-section of a crimp-marking device for detonator caps; in FIG. 2 - collet.

 The crimp-marking device (Fig. 1) consists of a housing 1 mounted on a table behind a protective fence, a conical sleeve 2, a collet 3, a cover 4 with a handle 5.

 Collet 3 (Fig. 2) has petals with protrusions 7. Radial stigma rods 8 are installed in the petals 6. An emphasis 9 is screwed and locked into the collet 3, defining the place for crimping and marking on the sleeve of the detonator capsule.

The device operates as follows:
- the detonator capsule connected to the blast signal transmission means is placed in a collet 3;
- by screwing the cover 4 by the handle 5 onto the housing 1, the collet 3 is pressed into the conical sleeve 2, while the petals 6 of the collet 3 are brought together, and the protrusions 7 and the stigma rods 8 are formed on the detonator capsule, respectively, of the crimping and impression marks.

 Practical use are collets 3 with the number of petals from 6 to 10.

 On a collet with six petals, it is possible to place stigma rods 8 with alphanumeric characters that have a font height of up to 2 mm.

 The number of stigma rods 8 may be less than the number of petals 6, however, to avoid bending the detonator capsule sleeve, they must be evenly distributed. Therefore, it is possible to install stigma rods 8 without signs.

 The working surface of the rods-stamp 8 is made spherical. In this case, the boundaries of the transitions between the impressions on the sleeve of the detonator capsule are smooth without cracks.

 The quality of the print improves with an increase in the overall stiffness of the liner and means for transmitting a blast signal.

 Placement of signs on the sleeve of the detonator capsule must ensure the safety of its equipment and the safety of the sign prints after the detonator caps are triggered.

 It is possible to mark previously compressed detonator capsules. To do this, use a collet without protrusions 7.

 For marking the sleeves before they are equipped, a collet 3 with flat working surfaces of the stigma-stems 8 is used. For marking with this collet, rods calibrated by its inner diameter are inserted into the sleeve.

 Collet 3 with stamping rods 8 is applicable in crimping-marking machines with mechanical, pneumatic and hydraulic actuators both from manufacturers of initiating means and from consumers.

 Moreover, the use of collet 3 provides uniform loading of the sleeve, ensures the tightness of the connection of the detonator capsule with means for transmitting a blast signal.

 The implementation of the stigma rods 8 of hardened steel provides low wear of their working surfaces.

Sources of information
1. Patent N 2.409.549, 86-40, 1946. Crimp device for detonator caps.

 2. Copyright certificate N 1277568, C 06 C 7/02 1985. Crimp-numbering for CD (prototype).

Claims (2)

 1. The crimp-marker of the detonator capsules, comprising a housing, a crimp element, a marking element connected to the crimp element with the possibility of joint action on the detonator capsule and details of the compression drive of the crimp element, characterized in that the crimp element is made in the form of a multi-leaf collet having on the petals, the inwardly facing protrusions for forming compression zigs, and the marking element is made in the form of marking rods-marks with spherical working surfaces mounted radially in the petal ah collet.  2. Marker of detonator capsules, comprising a housing, a marking element and details of the compression drive of the marking element, characterized in that the marking element is made in the form of a multi-leaf collet equipped with marking rods-stamps with spherical working surfaces mounted radially in the petals of the collet.

Images