CN1028212C - Hole punch with adjustable hole punch - Google Patents

Abstract

The invention relates to a perforating device with a perforating device underpart (10), at least two punch units (20) arranged to be adjustable in respect of their mutual spacing and a pressure lever (18) pivotably mounted or displaceably guided on the underpart (10) for displacing the hole punches (56) arranged in the perforator units (20). In order to be able to set, with simple and unloseable means, a large number of hole spaces which are customary in practice, the underpart contains a recess (22) which extends over the insertion length of the perforating device and is open at its upper edge, in which is arranged a scale support (24) which can be rotated about its longitudinal axis and bears a plurality of scales (24') which point upwards in different directions of rotation and are visible through the edge opening. The scale support (24) expediently has the shape of a round bar which can be locked in various positions of rotation on the underpart (10).

Description

The invention relates to a hole puncher, which has a base that can be placed on a table, at least two of which are arranged on the base, with adjustable mutual distances, each with a punching lower mold, a paper feeding slot and a The punch part of the punch, a pressure mechanism that can swing or guide on the base, preferably as a pressure plate, to move the punch, and an extension in front of the paper slot of the punch part The ruler of the insertion length of the base is used to adjust the punching distance between the punching parts.

This type of hole punch with adjustable punching parts is usually equipped with a fixed or replaceable scale, most of which are divided into millimeters or inches. The distance between the punched parts must be calculated by means of the various papers packed in file folders or in ring binders. It would be much simpler if the distances between different types of ring-shaped loose-leaf booklets were directly given on the scale. Since there are actually many ring-type loose-leaf books with different punching distances, the traditional multi-hole puncher cannot be easily achieved due to the requirement of clear marking. On the other hand, the proposed method of replacing the scales leads to troublesome replacement times, and there is a possibility that those scales which are temporarily not used will be lost.

From this point, the task of the present invention is: to improve the multi-hole puncher of the above-mentioned way, make the various punching distances between the punching parts by clearly positioning the scoring lines in different given positioning grooves, so that Adjustment made easy.

The present invention envisages that a multihole punch of the aforementioned type can be used for many different punching distances, and has the advantage that the scale used here is placed directly on the punch, the scale is clearly visible and cannot be lost. In order to achieve this purpose, the present invention proposes to set a longitudinal opening slot extending to the length of the insertion slit of the base, with the edge opening upwards, within the range in front of the paper slot of the punching part on the base, and a vertical opening that can be placed around the opening slot in this opening slot. A shaft-rotating scale rod with engraved graduations showing upwards at various positions of rotation, visible through openings in the edge.

According to a better design of the present invention, various scales on the scale rod are always upward, protruding from the edge opening of the base, and can be positioned and locked at a given rotational position of the base. The profile of scale rod is preferably round rod shape, but also can be made polygonal rod or flat rod.

Another excellent design of the present invention is: at both ends of the scale rod, there is a supporting journal that is integrally made as far as possible and protrudes concentrically with the shaft. It is clamped on the non-rotating shaft that is connected with the base. neck mounting hole. At the same time, it is suitable to make at least one journal installation hole detachably fastened on the base, preferably the journal sleeve can be positioned. Between the at least one journal mounting hole and the scale rod, preferably a spring-loaded detent is provided to lock the scale rod in a predetermined rotational position. For this purpose, a spring tongue with curved elastic force can be made on the journal sleeve preferably made of plastic, and a positioning hole that can be engaged with the positioning holes distributed along the circumference of the scale rod in the radial direction is arranged on it. bump. Although there are dimensional tolerances, in order to ensure reliable positioning, the positioning groove is preferably made to extend axially along the length of the scale rod.

Another option is: the positioning piece can consist of a positioning bead and a certain number of positioning holes. The positioning beads are arranged in the journal mounting hole, preferably in an eccentrically parallel opening in the journal sleeve, with a spring support below. The positioning grooves are distributed along the circumference on the end face of the scale rod towards the mounting hole of the relevant journal, taking the radius of the positioning beads as the distance.

In order to make the scale rod rotate easily, a supporting journal is tightened by the relevant journal installation hole, preferably by a journal sleeve, and an anti-rotation piece is installed on the part protruding from the journal installation hole. The best is the glued swivel head, which is easy to operate.

Because of the reason of manufacturing technology, the scale bar is suitable to be made up of two semicircular bars that are longitudinally separated, symmetrical to each other, and fit together and glued together, and the semicircle bar is suitable to be made into injection molded parts having the same profile with plastics.

Since the paper specifications may vary even if the punching distances are equal, a vertically protruding strip is additionally provided on the base, parallel to the scale rod, movable longitudinally, and positioned at various moving positions. A stop on the base to stop the edge of the paper to be punched. It is advantageous to do so.

Hereinafter, the present invention will be described in detail with structural examples shown schematically. They are:

Figure 1: Schematic representation of the front view of the multi-hole punch with rotatable scale rod and paper stop

Figure 2: Rear view of the multi-hole punch in partially cutaway schematic view

Figure 2a: Vertical section view of a perforated part

Figure 3: Diagram of a scale rod with a journal sleeve and a rotating head represented by a schematic exploded view according to Figure 1

Figure 4: Schematic of the two halves of the scale rod

The hole puncher shown in the figure essentially consists of a base 10 that can be placed on a table, a side wall 12 that is placed on the base 10, can swing around a horizontal axis 14, and has a pressure plate 18 with a handle 16. A punching part 20 arranged on the base 10 with an adjustable distance from each other, a scale rod 24 that can rotate around its longitudinal axis in an opening 22 extending in the lengthwise direction on the base 10 and a scale rod 24 on the side of the base 10 A paper blocking strip 30 with a paper blocking block 28 moves longitudinally in the notch 26 .

Punching part 20 has a quadrilateral opening 32, and it can be moved on the square installation bar 34 that is made by glass fiber reinforced plastics, and each is fixed on the arbitrary position of square installation bar 34 by a set screw 36, square installation bar 34 and The punching member 20 secured thereto in this manner constitutes an assembly which can be inserted into or removed from the punch base as a whole. In order to achieve this purpose, a clamping seat 38 is not centered on the base of the hole puncher, and it has an opening 40 that opens upwards and passes through to accommodate the square mounting rod 34 and a square mounting rod that engages with the opening 40 and can be tightened. Set screw 42 for the rod.

Each single punching part 20 has a paper entry gap 44 for punching paper at its bottom, a punching lower die 46 and a return spring effect made into a helical compression spring 48, with a snap ring 50, Put on the upper end stopper, the punching punch 56 that its upper terminal 54 protrudes above the punching part 20, the punching punch 56 can pass through the pressing plate 18 down, by means of the pressing rod 66 mounted on it, reverse Under the force of back-moving spring 48, by entering paper gap 44 and punching lower mold 46, beat to finish punching process below.

Within the range of the clamping seat 38, a support 58 is also made on the base 10, which has a vertically placed guide hole for the push rod 62 of the pressure rod 66 that is pressed against the pressure plate 18 under the action of the support spring 60. use. Spring-supported push rod 62 is in order to make pressure plate 18 form a rear end face 54 with the punch 56 of the punch 56 of its end stop plate when pressing plate 18 is in its upper terminal position. 66 free spaces between 64 . In this way, the punching parts can be easily adjusted to the mutual distance on the base without pressure. In addition, after loosening the positioning screw 42, the assembly consisting of the square mounting rod 34 and the punching part 20 can be removed from the base or loaded into the base with a knob.

In particular, as seen in FIG. 3, the scale rod 24 is in the form of a round rod, and a support journal 68, 70 concentric with the shaft protrudes from its two ends. The round bar and its supporting journal 68, 70 are suitably made of two longitudinally separated semicircular bars 25 (Fig. 4) by injection molding of plastics, and they are interlocked and (or) bonded to form a complete round bar. Before scale rod 24 is installed, put a journal sleeve 72 made of plastic injection molding on its longer support journal 70, and fix with a swivel head 74 on the end face, preferably fix with bonding method, make can't be Pivot on pivot and prevent from falling. The scale rod 24 installed in this way is then put into the notch 22 that has an opening on the upper edge of the base 10, and its support journal 68 is then inserted in the mounting hole 76. Thereafter, the journal sleeve 72 is placed in a positioning groove of a base 10 not shown in the figure by means of its positioning tongue 78, so that it cannot rotate. In addition, a spring tongue 80 is formed on the journal sleeve 72 , and a positioning protrusion 84 arranged radially inward at its terminal end can be engaged and positioned in the positioning groove 82 of the scale rod 24 . In this way, the scale rod 24 is braked by the base 10 in each predetermined rotational position indicated upwards by the prescribed scale 24'.

To sum up, point out the following points now: the present invention relates to a kind of puncher, and it has a puncher base 10, has at least two punching parts 20 that its mutual distance is adjustable and a can swing on base 10 or The moving platen 18 is guided to move the punch 56 of the punch unit 20 . In order to adjust the maximum punching distance in practical applications with simple and safe and accurate means, an opening 22 that extends beyond the insertion length of the puncher, opens upward, and extends along the length direction is provided on the base 10, in which A scale rod 24, rotatable about its longitudinal axis, has a plurality of graduations 24 displayed upwards in different rotational positions, visible through the edge opening. The profile of the scale rod 24 is suitably made into a round rod shape, and it can be positioned on the base 10 at a predetermined rotational position.

Claims (9)

1. A hole puncher with adjustable punching parts, which has a base (10) that can be placed on a table, at least two of which have an adjustable distance from each other on the base (10), each with a punching hole Lower die (46), a paper entry gap (44) and a punching part (20) of a punch (56), a pressure that can swing or guide to move on the base (10), preferably made into a pressing plate Mechanism (18), in order to move punch punch (56), there is also a scale (24) extending to the insertion length of base (10) in front of the paper entry gap (44) of punching part (20) , used to adjust the punching distance between the punching parts (20), it is characterized in that: in the range in front of the base (10) into the paper gap (44), there is an opening extending to the insertion length, opening upwards, extending along the length direction In the opening (22), there is a scale rod (24) that can rotate around the longitudinal axis, and it has a plurality of upwardly displayed scales at different rotational positions, and the scale (24') is always upwardly displayed. Rod (24) protrudes from the opening of the edge, and the scale rod (24) can be positioned and locked on the given rotational position of the base (10). Support journals (68, 70), which are clamped in non-rotatable journal mounting holes (72, 76) connected to the base (10), between at least one journal mounting hole (72) and the scale rod There are spring-supported locators between (24) to lock the scale rod (24) on a predetermined rotational position. The scale rod (24) is separated by two longitudinally, symmetrical to each other, and can be matched and bonded to each other. Semicircle bar (25) forms. 2. A hole punch according to claim 1, characterized in that the scale rod (24) is shaped like a round rod. 3. The hole punch according to claim 1, characterized in that: the scale rod (24) has a shape of a polygonal rod or a flat rod. 4. A hole punch according to claim 1, characterized in that at least one journal mounting hole is made to be detachably fastened to the base (10), preferably a positionable journal sleeve (72). 5. The hole punch according to claim 4, characterized in that: a spring tongue (80) with curved elastic force is formed on the journal sleeve (72) preferably made of plastic, and it has a The positioning holes (82) distributed on the circumference of the rod (24) can engage the positioning protrusions (84) in the radial direction. 6. A hole punch according to claim 5, characterized in that the positioning groove (82) extends axially along the length of the scale rod (24). 7. The hole punch according to claim 4, characterized in that: one of the supporting journals (70) is passed through the relevant journal mounting hole, preferably a journal sleeve (72), and is stretched out of the journal The portion of the mounting hole has an anti-rotation member, preferably a bonded swivel head (74). 8. A hole punch according to claim 1, characterized in that the semicircular rods (25) are preferably made of plastic injection molded parts of the same shape. 9. The hole punch according to claim 1, characterized in that: on the base plate (10), there is a paper stop strip ( 30), it has the stopper that protrudes on the base (10), to block the edge of the paper to be punched.

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