EA032817B1 - Clip-applier - Google Patents

Abstract

The invention is related to food industry, namely, to equipment for packing of various products in a tubular or bag-like casing, in particular, in sausage production. The disclosed invention solves the problem of a reliable clip-applier that allows utilization of clips with legs of different heights and different casing types while eliminating non-symmetrical closing of clips. Said objective is attained by provision of a clip-applier comprising a body (1), a mechanism (5) to feed clips (6) to the clip application zone, and a mechanism for crimping the clips (6) including a lower (7) and an upper (8) crimping tool, the lower crimping tool (7) being rotatable about an axis with a rotation radius r, wherein the upper crimping tool (8) is movable over a curvilinear path, namely, a part of circumference of radius R, and wherein r <<R, the surface of the upper crimping tool (8) in the area where the crimp (6) legs meet has an alignment projection (9) having substantially an isosceles cross-section, lateral sides of which are inclined so that their intersection point is directed toward the lower crimping tool (7).

Description

The invention relates to the food industry, and in particular to equipment designed for packaging various products in a tubular or bag-like sleeve casing, in particular in the production of sausages.

The invention relates to an automatic clipper designed for automatic pinching and corking with H2-H21 type clips in accordance with TU RB 03327523.008 of various plastic fillers into polymer, cellophane, proteinosin and others, used for mechanical clipping, sleeve casings, cutting the shell between the loaves, interacting with the pumping device and, if necessary, securing the twine loop under the paper clip, applying the manufacturing date (or expiration date) by branding the paper clip.

Such clippers contain in most cases a cam drive that defines the law of movement of the locking levers with clamping tools fixed to them. To transfer force to the closing levers, for example, a simple lever or a crank-lever mechanism are used [1].

For the clippers described above, staples are usually used, made of stamped aluminum wire tape, interconnected at the ends of their legs, forming a common bond plane. The paper clips made in this way are wound on a coil having a certain inner diameter. A reel with the required number of staples is mounted on the clipper.

The free end of the chain of clips is introduced into the guide channel, through which the clip is fed to the lower clamping tool (matrix) by means of a feed mechanism.

The movement of the rapprochement of the clamping tools is performed with a time offset, by means of a mechanical connection, which allows you to set the necessary law of motion. First, a paper clip is fed, laying it on the matrix, the lower locking lever carrying the matrix is rotated to the locked position of the tools. In this position, the very first clip is installed in the corresponding matrix slot and is preloaded by a spring-loaded clip and a formed sheath bundle (flagellum). As long as the lower clamping tool (die) remains in this position, the upper clamping tool (punch) is moved to the lower locking tool by turning around the same axis.

Immediately prior to closing the clip, the frontmost clip is separated from the subsequent chain of clips using the cutting elements provided on the clipping tools. At this moment, the separated clip is free and pressed against the lower clamping tool only by tensioning the sheath bundle. As the clamping tools come closer together, the clip deforms until the clamping tools come close to the end point of the closure and the clip is completely closed around the sheath bundle.

In modern conditions of using automatic clippers, there is a need for clipping various types of products into various types of sleeve casings. For various types of shells, it is necessary to use various types of paper clips both in physical properties (the material from which they are made) and in geometric parameters (paper pitch, thickness, overall dimensions, etc.). When using various clips, both the amount of their clamping and the opening angle of both closing levers moving relative to each other change. As a result, depending on the length of the legs of the undeformed clip, the upper clamping tool acts on both legs simultaneously.

This problem is solved in the closest in design to the claimed clipper technical solution according to [2].

The clipper according to the specified patent contains a housing with a clamping mechanism fixed on it, made in the form of two pairs of converging shaped cheeks, an axial pulling mechanism for the cheeks, a clip feeding mechanism to the clipping zone and a clip clamping mechanism made in the form of movable mounted relative to each other between the open position and the position of the circuit, the lower and upper clamping tools, and the lower clamping tool is configured to move from the open position to the position of the circuit due to rotation around the axis, and the upper clamping tool is made with the possibility of rectilinear movement from the open position to the position of the circuit.

As mentioned earlier, for the devices described above, staples made of stamped aluminum wire tape are usually used, interconnected at the ends of their legs, forming a common bond plane. The clips made in this way are wound on a coil having a certain inner diameter. A reel with the required number of staples is mounted on the clipper.

The free end of the staple chain is introduced into the guide channel, through which the staple is fed to the lower clamping tool using a feed mechanism. In this position, the very first clip is installed in the corresponding socket of the lower clamping tool and is preloaded by a spring-loaded clip. When winding from the reel, the chain of staples retains the residual curvature from the winding, which leads to incorrect orientation of the staple when the lower clamping tool is installed in the bed. At the time of separation, the paper clip is free and pressed against the lower clamping tool only

- 1 032817 due to the tension of the shell sheath. When using sufficiently strong shells, the paper clip can partially be pressed against the lower clamping tool (matrix) due to the tension of the flagellum. However, if the clipper is used for clipping various types of sheaths, then the weak effect of the flagellum formed from a less durable sheath on the paper clip can lead to the displacement of the paper clip, which will damage the sheath. As a result, the action of the upper clamping tool on the legs of the paper clip can lead to an asymmetrical closure of the paper clip, and this, in turn, leads to leaky corking of the product, which is unacceptable.

A known design of the clip feeding mechanism [3] for clippers of this kind, in which the clip feeding drive is integrated in the matrix drive lever and has a rigid kinematic connection with the cam shaft using drive roller chains. The feed plug of this device works synchronously with the matrix drive lever, performing useful work (feeding a clip to the desired step) in a certain phase of the operation cycle. The feed is carried out at the moment when the clamping process of the paper clip is completed and the matrix drive lever begins to return to its original position (lower position).

Known unwanted effects.

1. At the beginning of the supply phase, the portion of the paper clip meshed with the feed fork and the portion of the paper clip located in the input channel of the paper clip is at a relatively large angle. Each time the paper clip is moved to the required step, the chain of paper clips experiences an additional load from the friction forces moving along such a channel path, overcoming the friction forces caused by the bending of the paper chain. Since the clipper is used to work with various types of shells, there is a need to use staples with various geometric and mechanical properties. When using staples with poorer mechanical properties, there is a possibility of stretching the chain of clips, and hence violation of the pitch between the clips. As a result, the engagement conditions of the feed fork and the staple chain are violated. For this reason, the paper clip is deformed, and as a result, the paper clip is jammed in the guide channel. What can lead to malfunctions of the clipper.

2. The drive of the clip feed mechanism is connected to the main drive by a chain roller transmission, therefore, excess power is transferred to the clip feed fork. In the event of congestion caused by stretching the paper clip, the feed mechanism experiences increased loads, which can cause breakdown of one of the components of the feed mechanism, or chain tension. When the drive chain is stretched, the engagement condition of the feed fork and the staple chain is violated, which can lead to malfunctions of the clipper.

3. The use of a roller chain as a drive element is undesirable from the point of view of sanitization in view of the difficulty of washing out all the chain links. Attempts to protect the chain drive dramatically worsen service conditions.

To make adjustments to the clip clamp value (stroke value of the upper clamping element, the punch), clippers use the already known punch stroke adjustment mechanism [4].

The known design of the punch stroke controller consists of the following main units: screw, nut, cover, plate, scale.

The adjustment knob is installed in the nut hole. Using a wrench, a nut is rotated, which, through a threaded connection, transmits torque to the screw. Since the screw is fixed against rotation, an axial linear movement of the screw occurs. The clip clamp is determined by the pitch of the thread between the screw and nut. If the direction of the thread winding is right, then when the nut is turned clockwise, the screw rises, the axis moves up, the stroke of the punch decreases, therefore, the height of the clamp clamp increases and the clamp clamp decreases.

To ensure the rotation of the nut with the muscular strength of the operator, a clearance between the nut and the cover is necessary. There is also always a gap in the threaded connection between the screw and the nut. The presence of all these gaps adversely affects the height of the clamped paper clip. During the operation of the equipment there are vibrations and shock loads. These loads adversely affect the threaded connection between the screw and the nut, since they lead to the unscrewing of the nut and, as a result, during operation, it is possible to change the height of the clamped staple.

The claimed invention solves the problem of creating a reliable clipper that allows you to use staples with legs of varying heights, and various types of shells that exclude asymmetrical closure of staples, as well as a stroke adjuster for the upper clamping tool and a staple feed mechanism for this clipper that solve the same problem.

The task in the clipper, containing the housing, with a pinch mechanism mounted on it, made in the form of two pairs of converging shaped cheeks made with the possibility of axial broaching, a clip supply mechanism to the clipping zone and a clip clip mechanism made in the form of relative to each other between the open position and the position of the circuit, the lower and upper clamping tools, and the lower clamping tool is made with the possibility of movement from the open position to position NIJ-circuit by rotation about the axis of rotation with a radius r, is solved in that the upper clamping tool is arranged to move from the open position to the position of the curved closure

- 2 032817 trajectories in the form of a section of a circle with radius R, with r << R, and the surface of the upper clamping tool in the region of convergence of the legs of the paper clip is made with a centering protrusion, which is a generally isosceles cross section, the sides of which are made inclined so that their intersection point is toward the lower clamping tool.

The clipper is preferably provided with upper curved guides for moving said upper clamping tool along the radius R.

The cross section of the centering protrusion is preferably triangular, with an apex angle directed toward the lower clamping tool.

The upper clamping tool is configured to move from the open position to the circuit position along the specified curved guides under the influence of a lever mounted on the first axis, made with the possibility of changing position and connected by an additional lever with a stroke control, consisting of a screw with a transverse beam fixed to it, associated with the specified additional lever and by means of a thread with an adjusting nut; a base plate and a cover, and the stroke amount controller is provided with a controllable linear actuator configured to transmit a force directed toward the action of the work load during clipping onto said screw by acting on said crosshead.

The lower clamping tool is configured to move from the open position to the locking position under the influence of the lower clamping tool drive lever associated with the profile cam, and the staple feed mechanism is provided with a separate profile cam connected to the feed fork through the lever to give the feed fork reciprocating motion a vertical plane, and a controllable linear actuator for giving through the second lever to the feed fork a reciprocating movement on the specified second axis, with it profile cam clip feed mechanism configured to synchronize movement of the lower clamping tool and feed mechanism of the lever clip.

The task in the regulator of the magnitude of the stroke of the upper clamping element containing a screw, with a transverse beam fixed to it, connected with an additional lever and by means of a thread with an adjusting nut; the base plate and the cover, it is decided that the stroke magnitude regulator is equipped with a controllable linear actuator configured to transmit a force directed towards the action of the work load during clipping onto said screw by acting on said crosshead.

The problem in the paper clip feed mechanism, comprising a feed fork mounted on a second axis and controlled by a paper feed drive lever, is solved by the fact that the mechanism is provided with a separate profile cam of the paper feed mechanism associated with the paper feed drive lever for imparting a feed fork reciprocating motion in a vertical plane, and a controllable linear actuator for giving through the second lever of the feed drive the feed fork for a reciprocating movement on said second axis, wherein the cam profile of the paper clip feed mechanism is designed to synchronize the movements of the lower clamping element and the clip feed lever.

All linear drives used in the claimed devices are preferably made in the form of pneumatic cylinders controlled by a clipper control system.

Examples of the implementation of the claimed clipper, its constituent elements and the procedure for its operation are shown in the following non-limiting drawings.

FIG. 1 is a schematic representation of the claimed clipper;

FIG. 2 is a view A in FIG. 1;

FIG. 3 - paper feed mechanism in the paper feed position;

FIG. 4 - region B in FIG. 3, increased;

FIG. 5 is a paper clip feeding mechanism in a preparation position for a paper clip feeding;

FIG. 6 - region B in FIG. 5, increased;

FIG. 7 - regulator of the magnitude of the stroke of the upper clamping element in the adjustment position;

FIG. 8 - stroke magnitude control of the upper clamping element in the locked position; FIG. 9 is a schematic diagram of a filler assembly with a clipper during operation;

FIG. 10 - possible positions of the paper clip in case of various residual deformations of the paper chain after unwinding from the coil;

FIG. 11 - region G in FIG. 10, increased;

FIG. 12 - movement of clamping tools;

FIG. 13 - the position of the paper clip at the moment of the beginning of the action of the upper clamping tool;

FIG. 14 - the position of the paper clip at the moment of contact with the cutting part of the upper clamping tool;

FIG. 15 - position of the paper clip at the time of separation;

FIG. 16 - the position of the legs of the paper clip at the point of closure;

FIG. 17 - clip clips at the maximum point of closure of the clamping tools.

The claimed clipper includes a housing 1 (see Fig. 1, 2), with a mechanism 2 attached to it

- 3 032817 modes, made in the form of 2 pairs of converging shaped cheeks 3 and 4 (see Fig. 9), made with the possibility of axial broaching (the mechanism of axial broaching of the cheeks is not shown in the drawing), the paper feed mechanism 5 (see Fig. 3-6) into the clipping zone, and the clip clamping mechanism 6, made in the form of mounted with the possibility of movement with respect to each other between the open position and the locking position of the lower clamping tool (matrix) 7 and the upper clamping tool (punch) 8.

On the surface of the punch 8 (see Fig. 11, 13-17) in the region of convergence of the legs of the paper clip 6, a centering protrusion 9 is made, made in this example with a triangular cross section, with an angle at the apex directed towards the matrix 7. Form of the cross section the centering protrusion can be different: trapezoidal, semicircular or biconcave, the main thing is that its sides are equal and made inclined so that their intersection point is directed towards the matrix 7 for uniform folding of the legs of the clip 6 when clip IAOD.

The clipper is equipped with upper curved guides 10 for moving the said punch 8 along the radius R under the influence of the lever 11 mounted on the first axis 12, made with the possibility of changing position. The axis 12 is connected by an additional lever 13 with the regulator of the stroke 14 of the upper clamping tool (hereinafter - the punch 8). The regulator of the stroke 14 of the punch 8 (see Fig. 7, 8) consists of a screw 15 with a transverse beam 16 fixed to it, connected with the indicated additional lever 13 and by means of a thread with an adjusting nut 17; the base plate 18 and the cover 19. The regulator of the stroke 14 of the punch 8 is equipped with a controllable linear actuator made in this example in the form of a pneumatic cylinder 20 with the possibility of transmitting the force directed towards the action of the working load during clipping onto the screw 15 by acting on the crosshead 16.

The matrix 7 is made with the possibility of movement from the open position to the position of the circuit under the influence of the lever 21 of the matrix drive mechanism (see Fig. 3-6) associated with the profile cam 22 of the matrix drive mechanism. The feed mechanism 5 of the paper clip 6 is provided with a separate profile cam 23 of the paper feed mechanism connected to the feed fork 24 through the lever 25 of the paper feed mechanism to give the feed fork 24 a vertical reciprocating movement and controlled by a linear actuator, in this example, in the form of a pneumatic cylinder 26, controlled by a clipper control system (not shown in the drawing), for giving, through a second lever 27, a feed fork 24 of a reciprocating movement on the second axis 28. The cam profiles 23 of the paper feed mechanism and cam 22 of the matrix drive mechanism is designed to synchronize the movements of the matrix 7 and the lever 25 of the paper feed mechanism.

Before the start of the work cycle, the clip clamp is adjusted (i.e., the stroke of the punch).

The governor for the stroke 14 of the punch 8 is further shown in FIG. 4 and 5 in the upper and lower extreme positions.

Using the adjusting knob (not shown), which is installed in the hole 29, the nut 17 is rotated. The linear axial movement of the nut 17 is limited by the end surfaces of the cover 19 and the base plate 18. The nut 17 transfers the torque to the screw 15 due to the threaded connection. Traverse 16 rigidly connected to the screw 15. Since the screw 15 from rotation is fixed by the lever 13 and the first axis 12, there is an axial linear movement of the screw 15. The size of the clip clamp is determined by the thread step between the screw 15 and the nut 17. The preferred direction of thread winding is right. Therefore, rotating the nut 17 clockwise, lift the screw 15, and, accordingly, reduce the clamping value of the paper clip 6, the axis 12 moves up, the stroke of the punch 8 decreases, the height of the clamped paper clip 6 increases. Rotating the nut 17 counterclockwise, lower the screw 15 and increase the clamping value of the paper clip 6, the axis 12 moves down, the stroke of the punch 8 increases, the height of the clamped paper clip 6 decreases.

After supplying a control signal to the pneumatic cylinder 20, it transfers its force directed towards the action of the working load during clipping to the screw 15 through the yoke 16. As a result, the gaps in the thread between the screw 16 and the nut 17, as well as the gaps between the nut 17 and the cover, are selected 19. In this operating position, the muscular strength of the operator is not enough to turn the nut 17 with the knob. There is no clearance in the threaded connection between the screw 15 and the nut 17. The absence of gaps positively affects the height of the clamped paper clip. Fluctuations and impact loads do not affect the threaded connection between the screw 15 and the nut 17 and do not lead to the unscrewing of the nut 17. As a result, the height of the clamped paper clip is excluded during operation.

The claimed clipper operates as shown in FIG. 9.

A sleeve casing 31 is put on the filling tube 30.

A brake device 32 is mounted on the tube 30 with the sheath 31 on. The braking device 32 creates the required holding force of the sheath 31 when it is filled with the product and prevents air from entering the interior of the sheath with the product (loaf 33).

Clamping of the shell 31 is performed, while the cheeks 3 and 4 of the clamping mechanism 2 approach radially with respect to the clipping shell with the product. Clamping of the shell 31 occurs. After this

- 4 032817 th cheeks 3 perform axial displacement in the direction of the loaf 33, creating a stretched flagellum 34 from the shell 31. To form a flagellum 34, the shell 31 is pulled through the cheeks 4 and the brake device 32 using the supply of the shell 31 located on the filling tube 30.

The filing of the paper clip 6 is as follows (see Fig. 3-6).

The feed mechanism 5 of the clip 6 and the lever 21 of the matrix drive mechanism are divided as two independent mechanisms, each of which is driven by its own profile of the cams 23 and 22, respectively. The engagement and disengagement of the feed fork 24 and the chain of clips 6 is carried out by synchronizing the movement of the lever 21 of the matrix drive mechanism 7 and the lever 25 of the paper clip mechanism 6. The mutual movement of the lever 21 of the matrix drive mechanism and the lever 25 of the paper clip mechanism is achieved by mutual coordination of the control profiles of the cams 22 and 23 of these mechanisms, respectively.

The lever 21 of the drive mechanism of the matrix, the lever 25 of the paper feed mechanism, as well as the clamping bar 35 have a common axis of rotation, therefore, the engagement of the feed fork 24 and the chain of clips 6 is possible at any of the angles of the path of movement of the levers 25 and 21. The feed fork 24 oscillates around axis 28, providing a rise in the chain of clips 6 above the matrix 7 and the supply of the clip to the desired step N. The driving force of the fork 24 is obtained from the rotation of the eccentric shaft 36, which has an eccentricity C at an angle of X °, which in turn is driven through the lever 27 from a controlled pneumatic cylinder 26. The pneumatic cylinder 26 is mounted on the lever 27 of the paper feed mechanism with a swivel at point P. The moment of turning on the pneumatic cylinder 26 can be adjusted with a delay or ahead of the cycle time using the clipper control system (not shown in the drawing).

When the lever 21 of the drive mechanism of the matrix 7 moves to the clipping point (see Fig. 5, 6), the lever 25 of the feed mechanism 5 moves in the same direction, but with a delay. At the moment when the lever 21 carrying the matrix 7 reaches the clipping point, the feed fork 24 is completely disengaged from the chain of clips 6. The clip 6 is installed in the place necessary for clipping and is pressed by the bar 35. The bar 35 is spring-loaded with respect to the lever 21 s using the elastic element 37, ensuring reliable fixation of the chain of clips 6 on the clipping tool (matrix 7). At the command of the clipper control system, the pneumatic cylinder 26 makes a return stroke, forcing the supply fork 24 to return to its original state (the gearing position during feeding is shown by a dotted line in Fig. 6). Thus, the synchronization of the movements of the matrix 7 and the lever 25 of the paper clip feeding mechanism is made in such a way that the engagement of the feed fork 24 and the chain of paper clips 6 is carried out at the end of the clipping cycle (the lever of the matrix 7 drive mechanism is in its lowest position (see Fig. 4 )

Fixation of the chain of clips 6 on the matrix 7 occurs along the last two clips. After the last paper clip is detached during clipping, the paper clip following it remains securely fixed in its mounting position 38. When the lever 21 of the matrix drive mechanism is returned to the lower position (see Fig. 2), the step linking of the chain of paper clips 6, the forks 24 and matrices 7.

In automatic mode, the cycle is repeated many times.

The matrix 7 is made with the possibility of movement from the open position to the position of the circuit due to rotation around an axis with a radius of rotation r, the punch 8 is made with the possibility of movement from the open position to the position of the circuit along a curved path in the form of a section of a circle with radius R, while r << R (see Figs. 1 and 12).

Paper clips 6 are fed in the described manner to the clipping zone (see Fig. 9), already pre-installed and fixed on the matrix 7. When the punch 8 and the matrix 7 come together, one clip 6 is separated from the chain of clips, and they are clamped simultaneously around the shell 31 flagellum 34. (It should be noted that two staples 6 of two parallel chains are placed on the formed flagellum 34. One staple 6 is applied to the end of the previous loaf 33, the other to the beginning of the next.

The punch 8 moves in guides 10 along a curved path (see Fig. 12), first acting on the free leg of the paper clip 6 (see Fig. 13), being installed in the desired position in the matrix 7 (see Fig. 14). The radius R of the rapprochement of the punch 8 is much larger than the radius r of the motion of the matrix 7, so the installation of the clip 6 occurs without additional deformation of the free leg. After this, the connected leg is separated and at the same time the beginning of the free leg is bent. The moment of separation of the paper clip 6 from the chain of paper clips and the moment of the beginning of deformation of the paper clip 6 are combined. With such simultaneous action on both legs, it is likely that one of the legs can reach the closing position earlier, due to unequal force from the punch 8 on both legs of the clip 6. But for the correct closing of the legs of the clip 6, they must converge symmetrically with respect to the axis of symmetry of the clip.

On the profile of the punch 8 at the point where the legs of the clip 6 should close, a centering protrusion 9 is made (see Fig. 11, 13-17), which stops the overrun of any of the legs relative to the axis of symmetry of the clip 6 and into which the leg of the unevenly laid paper clip rests 6, shifting it and giving the correct position. Further movement of the punch 8 leads to a symmetric

- 5 032817 relative to the axis of symmetry of the paper clip 6 to the information of its legs (see Fig. 13-17), and the closure of the paper clip 6.

Then, the flagellum 34 is divided between the staples, the cutting knife 39 (see Fig. 9).

During the rest of the work cycle, all mechanisms return to their original state. At the end of the work cycle, two clips are simultaneously fed. The sticky loaf 33 is removed from the clipping zone using an unloading tray.

Through the interior of the tube 30, the product 31 is filled with the product 31 for the next portion. Filling takes place using a pumping device that is not part of this technical system.

After filling the desired portion, the operator starts the claimed clipper in automatic mode. At the same time, all the previously listed operations are cyclically performed until the entire supply of the shell 31 located on the filling tube 30 is used up.

Thus, the task in the claimed clipper is solved due to the following technical results, the moment of separation of the paper clip from the chain of paper clips and the moment of deformation of the paper clip are combined, and the punch moves in curved guides having a radius of curvature significantly greater than the radius of movement of the lower clamping tool (matrix );

on the profile of the punch at the point where the legs should be closed, a protrusion of the claimed form is made, compensating for the asymmetric placement of the paper clip and ensuring its symmetrical closure;

gaps in the moving elements of the regulator of the stroke value of the upper clamping tool (punch) are excluded, which adversely affect the height of the compressed paper clip;

the convenience of adjusting the size of the clip clip;

the use of an independent linear drive of the staple feed mechanism allows the necessary and sufficient force to be applied to the staple chain. In case of violation of the pitch of the staples in the chain, for any reason, there is no likelihood of failure of the staple feed mechanism due to excessive applied force.

The use of a time-controlled paper clip feeding mechanism allows the paper clip to be automatically fed sequentially several steps forward without completing a complete clipping cycle. Using the control system, you can carry out half the cycle of work and return to its original position, while separation and deformation of the paper clip will not occur. Such an opportunity is in demand during commissioning procedures or in the case when it is necessary to advance the chain of staples a few steps forward when detecting violations of the geometry of staples without completing complete work cycles (removing the defective section of staples).

The use of pneumatic cylinders as all of these linear actuators improves the conditions of sanitary treatment, as well as the conditions of maintenance and commissioning. To adjust the pitch of the staple feed, it is enough to adjust the length of the linear actuator rod and, in manual mode, control the progress of the feed fork. In already known designs with a chain drive, to check the correctness of the step setting, it is necessary to carry out a full duty cycle, since the feed fork feeds the staple only at a certain moment in the clipping cycle. When moving in the opposite direction, a chain of staples is fed in the opposite direction.

Sources of information.

1. European patent EP 1428760, publ. 01/17/2007.

2. Patent of Russia RU 2386573, publ. 04/20/2010 (prototype).

3. Polv-clip company website: https: //drive.google.com/drive/folders/0BltI-czVnpIbaFJDUkJVMUhubk0 (prototype).

4. European patent EP 1731432, publ. 06/17/2009 (prototype).

Claims (6)

CLAIM 1. Clipper, comprising a housing (1), with a clamping mechanism (2) mounted on it, made in the form of two pairs of converging shaped cheeks (3, 4) made with the possibility of their axial broaching, the paper clip feeding mechanism (5) (6) in the clipping zone and the clamping mechanism of the clip, made in the form of mounted with the possibility of movement relative to each other between the open position and the position of the circuit, lower (7) and upper (8) clamping tools, and the lower clamping tool (7) is made with the possibility of movement from open position to position замык closure due to rotation around an axis with a turning radius r, characterized in that the upper clamping tool (8) is configured to move from the open position to the closure position along a curved path in the form of a section of a circle with radius R, while r << R, moreover, the surface of the upper clamping tool (8) in the region of convergence of the legs of the clip (6) is made with a centering protrusion (9), which is a generally isosceles cross section, the sides of which are inclined so that their intersection point directed towards the lower clamping tool (7). - 6 032817 2. The clipper according to claim 1, characterized in that it is provided with upper curved guides (10) for moving the said upper clamping tool (8) along the radius R. 3. The clipper according to claim 1, characterized in that the cross section of the centering protrusion (9) is triangular, with an angle at the apex directed towards the lower clamping tool (7). 4. The clipper according to claim 2, characterized in that the upper clamping tool (8) is configured to move from the open position to the circuit position along the specified curved guides (10) under the influence of a lever (11) mounted on the first axis (12), made with the possibility of changing position and connected by an additional lever (13) with a regulator (14) of the stroke value, consisting of a screw (15) with a transverse beam (16) fixed to it, connected with the specified additional lever (13) and by means of a thread - with an adjustment nut (17); the base plate (18) and the cover (19), and the controller (14) of the stroke is equipped with a controllable linear actuator configured to transmit forces directed towards the action of the work load during clipping onto said screw (15) by acting on said crosshead ( 16). 5. The clipper according to claim 4, characterized in that the linear actuator is made in the form of a pneumatic cylinder (20). 6. Clipper according to claim 1, characterized in that the lower clamping tool (7) is configured to move from the open position to the locking position under the influence of the lever (21) of the drive of the lower clamping tool (7) associated with the profile cam (22), and the clip supply mechanism (5) is provided with a separate profile cam (23) connected to the feed fork (24) through a lever (25) to give the feed fork (24) a reciprocating movement in the vertical plane and controlled by a linear drive ( 26) for giving through the second lever (27) I give a reverse fork (24) on the specified second axis (28), and the cam profile (23) of the paper clip mechanism (5) (6) is designed to synchronize the movements of the lower clamping tool (7) and the lever (25) of the mechanism (5 ) feed the paper clip (6).