EP3103558A1 - Improved pincer for a stamping press with a transfer system - Google Patents
Improved pincer for a stamping press with a transfer system Download PDFInfo
- Publication number
- EP3103558A1 EP3103558A1 EP16382259.6A EP16382259A EP3103558A1 EP 3103558 A1 EP3103558 A1 EP 3103558A1 EP 16382259 A EP16382259 A EP 16382259A EP 3103558 A1 EP3103558 A1 EP 3103558A1
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- EP
- European Patent Office
- Prior art keywords
- pincer
- fastening
- support body
- cylinder
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 210000000080 chela (arthropods) Anatomy 0.000 title claims abstract description 87
- 238000012546 transfer Methods 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
Definitions
- the present invention relates to an improved pincer for a stamping press with a transfer system, which makes it possible to significantly increase the production of the stamping press.
- Stamping presses are used in industry to shape metal workpieces, such as, for example, the shaped panels used in the automobile industry. These presses include an automatic panel positioning and transferring system, habitually called “transfer system", which allows for the sequential die-cutting of a panel along the plurality of dies that make up the press.
- the aforementioned positioning and transferring system hereinafter transfer system, includes a plurality of pneumatic pincers distributed along profiles located on both sides of the press dies. These pincer holder profiles are coupled to bars which are capable of performing a swing motion in the direction of travel of the panels to be stamped, such that a group of pincers associated with the same die is capable of fastening a panel to be stamped, transferring it to the following die, and returning to its respective die, whilst the panel is being stamped. This process is repeated with the subsequent panels to be stamped or die-cut.
- the aforementioned pincers comprise fastening arms for the panel to be stamped and a support body equipped with an inner cavity that houses a pneumatic cylinder.
- the function of this cylinder is to actuate a fastening arm for the pincer, which is jointly articulated with the support body.
- Each of the pincers includes tubes designed to supply the pneumatic circuit of the cylinder and electric cables that supply one or several occupancy sensors of the panel to be stamped.
- Stamping processes using presses that include the transfer system are intended to increase production (workpieces per minute), by increasing the working speed of the system.
- the greater the speed of the system the greater the effort exerted by the pincer on the panel to be stamped, in order to prevent it from slipping. If the panel slips, the stamping process is altered and stopped, which very adversely affects the performance of the press.
- the objective of the present invention is to provide an improved pincer for a stamping press with a transfer system that makes it possible to safely increase the working speed of the press and, consequently, the productivity thereof.
- the present invention provides an improved pincer for a stamping press with a transfer system, which comprises fastening arms of a workpiece to be stamped and a support body equipped with an inner cavity that houses a fluid-dynamic cylinder, said cylinder being capable of actuating a first fastening of the pincer, which is attached articulated with said support body, and is characterized in that a portion of said support body defines a second fastening arm, such that said second fastening arm is built into the support body of the pincer.
- the second fastening arm is integrated within or built into the support body of the pincer, i.e. it is a part of the same support body that incorporates the articulated arm. Thanks to this, a more rigid pincer is obtained, which is capable of fastening the workpiece to be stamped more safely; this, in turn, translates into an increase in the productivity of the press (possibility to accelerate the movement of the transfer system).
- the second fastening arm is made up of a plate that is attached together with the support body. This configuration facilitates the insertion of the electric cabling that supplies the occupancy sensor of the panel to be stamped, but has the disadvantage that it limits the pincer's fastening capacity.
- the pincer of the present invention provides other advantages, which are described below.
- the pincer preferably comprises an inlet and an outlet for the feed fluid of the fluid-dynamic cylinder (for example, a pneumatic cylinder), which are located on one side of said support body.
- the fluid-dynamic cylinder for example, a pneumatic cylinder
- the pincer comprises an occupancy sensor for the workpiece to be stamped, which includes a supply cable integrated within the portion of the support body that defines the second arm. This feature contributes to reducing the total height of the pincer, which makes it possible to save space.
- the first articulated fastening arm is configured in such a way that it comprises one end equipped with at least one through-hole for a fastening tip for the panel and a nut-and-bolt set configured so as to affix said fastening tip at the top of the interior of said hole.
- the fastening tip is introduced into a through-hole of the arm and affixed at the top of the interior of said hole, without the need to use an upper fixing plate, as in the case of the clamps disclosed in the prior art.
- This feature makes it possible to reduce both the length of the arm and the number of pincer components and, consequently, the weight thereof. Moreover, it also makes it possible to obtain an articulated arm with a smaller turn radius, which contributes to achieving a greater fastening effort.
- the end opposite the first articulated fastening arm comprises a slot which acts as a guide for an actuator bearing integrally attached with the cylinder rod that actuates said arm. It has been observed that this actuator bearing prolongs the useful life of the pincer.
- the first fastening arm is attached articulated with the body of the pincer at an articulation point that is substantially aligned with the second fastening arm. Consequently, shorter fastening tips may be used, which contributes to reducing the total weight of the arm.
- the rear chamber of the cylinder designed for the inlet and outlet of fluid comprises a shock-absorbing element that acts as a stopper for the cylinder piston, said shock-absorbing element being sized such that it absorbs the kinetic energy originating from the motion of the first articulated fastening arm of the pincer and contributes to obtaining a greater speed for the upper arm.
- the shock-absorbing element makes it possible to significantly reduce the noise produced by the pincer when it is in operation, which makes it possible to improve the environmental conditions at the workplace.
- the fluid-dynamic cylinder comprises a sealing gasket that is also configured to act as a scraper gasket for the cylinder rod.
- a sealing gasket that is also configured to act as a scraper gasket for the cylinder rod.
- the diameter of the fluid-dynamic cylinder is greater than 20 mm, for example, a diameter of 25 mm, which contributes to obtaining a pincer with greater fastening force.
- Figures 7 and 8 correspond to a pincer already known in the prior art.
- Figures 1 to 6 show an embodiment of the pincer wherein the fastening arms are actuated by a pneumatic cylinder by means of an actuator bearing associated with the cylinder rod.
- the pincer described in this embodiment is equipped with a support body made of treated steel and a pneumatic cylinder with a diameter of 25 or 32 mm.
- FIGs 1 to 4 represent several perspective views of the pincer 1 of the present invention, in the open and closed positions, with one or two fastening tips 2 for the panel to be stamped.
- Each pincer 1 includes two fastening arms 3 of the workpiece to be stamped and a support body 4 equipped with an inner cavity that houses a pneumatic cylinder 5 (see also Figures 5 and 6 ).
- This fluid-dynamic cylinder 5 actuates a first fastening arm 3a, which is attached articulated with one axis 17 of the support body 4.
- the rear chamber 18 of the pneumatic cylinder 5 comprises a shock-absorbing element 20 that acts as a stopper for the piston 19 of the cylinder 5.
- This shock-absorbing element absorbs the kinetic energy originating from the motion of the first fastening arm 3a, thereby reducing the noise produced by the pincer 1 when it is in operation.
- the pincer 1 of the present invention is characterized in that a portion 4a of the support body 4 defines the second fastening arm 3b of the pincer, such that said arm 3b is built into the support body 4 of the pincer 1. Thanks to this, a pincer 1 is obtained that is more rigid and with a shorter height, which makes it possible to fasten the workpiece to be stamped more safely, without the risk of slippage and with a high fastening force.
- the pincer with a piston diameter provides a fastening force of up to 180 decanewtons (daN) for a working pressure of 6 bar.
- FIGS. 7 and 8 represent a pincer 1' disclosed in the prior art, wherein the second fastening arm 3b' is configured by a plate 6 attached to the support body 4', which causes the total height of the pincer 1' to be greater; for example, a height of 58 mm vs. a height of 40 mm for the pincer 1 claimed herein.
- the electric cable 7' that supplies the occupancy sensor 8' of the panel to be stamped is placed between the plate 6 and the support body 4'.
- the cable 7 of the occupancy sensor 8 is integrated within the portion 4a of the support body 4 that defines the second fastening arm 3b, which contributes to obtaining a shorter total height and provides a more compact design (see Figures 5 and 6 ).
- the pincer 1 claimed herein comprises an air inlet and an air outlet 9, which are located on one side 4b of the support body 4 (see Figures 1 to 6 ), instead of being located on the rear part (see Figures 7 and 8 ), as in the case of the pincers 1' disclosed in the prior art. Thanks to this, the length of the pincer 1 is shorter than that of the pincers 1' disclosed in the prior art; for example, a length of 130 mm vs. a length of 150 mm (see Figures 5 and 7 ). Moreover, this lateral location makes it possible to use air inlet and outlet tubes with a greater diameter, in order to provide a higher air flow rate, which results in greater productivity.
- pincer 1 of the present invention lies in the particular configuration of the geometry of the articulated arm 3a, which includes the presence of one or more throughholes 11 at the free end thereof.
- the fastening tip 2 of the pincer 1 is affixed at the top of the interior of these holes by means of a nut-and-bolt set, without the need to use an additional fixing plate 13, as in the case of the pincers 1' disclosed in the prior art (see Figures 5 and 6 , as compared to Figures 7 and 8 ).
- This feature facilitates designing an articulated arm 3a with a smaller turn radius, which contributes to increasing the fastening effort of the pincer 1.
- the opposite end of the first articulated arm 3a of the pincer 1 has a slot 14 that acts as a guide for the actuator needle bearing 15, which is integrally attached with the rod 6 of the pneumatic cylinder 5 that actuates the articulated fastening arm 3a.
- Figures 5 and 6 represent the articulation axis 17 of the arm 3a. This axis 17 is substantially aligned with the second fastening arm 3b, which makes it possible to use a shorter fastening tip 2 (see, once again, Figures 5 and 6 as compared to Figures 7 and 8 ).
- the articulated fastening arm 3a of the pincer 1 opens at an approximate angle of 25o, actuated by the actuator bearing 15, until the piston 19 of the pneumatic cylinder 5 is stopped by the shock-absorbing element 20 (see Figure 6 ).
- the same articulated arm 3a closes upon detecting the workpiece by means of the occupancy sensor 8 integrated within the support body 4 of the pincer 1 (see Figure 5 ).
- the pincer 1 moves jointly with the workpiece actuated by the motion bar of the transfer system.
- the pincer 1 claimed herein guarantees perfect fastening of the workpiece to be stamped, even at high accelerations. When the working speed increases, the productivity very significantly increases.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Manipulator (AREA)
Abstract
Description
- The present invention relates to an improved pincer for a stamping press with a transfer system, which makes it possible to significantly increase the production of the stamping press.
- Stamping presses are used in industry to shape metal workpieces, such as, for example, the shaped panels used in the automobile industry. These presses include an automatic panel positioning and transferring system, habitually called "transfer system", which allows for the sequential die-cutting of a panel along the plurality of dies that make up the press.
- The aforementioned positioning and transferring system, hereinafter transfer system, includes a plurality of pneumatic pincers distributed along profiles located on both sides of the press dies. These pincer holder profiles are coupled to bars which are capable of performing a swing motion in the direction of travel of the panels to be stamped, such that a group of pincers associated with the same die is capable of fastening a panel to be stamped, transferring it to the following die, and returning to its respective die, whilst the panel is being stamped. This process is repeated with the subsequent panels to be stamped or die-cut.
- The aforementioned pincers comprise fastening arms for the panel to be stamped and a support body equipped with an inner cavity that houses a pneumatic cylinder. The function of this cylinder is to actuate a fastening arm for the pincer, which is jointly articulated with the support body. Each of the pincers includes tubes designed to supply the pneumatic circuit of the cylinder and electric cables that supply one or several occupancy sensors of the panel to be stamped.
- Stamping processes using presses that include the transfer system are intended to increase production (workpieces per minute), by increasing the working speed of the system. However, it has been demonstrated that, the greater the speed of the system, the greater the effort exerted by the pincer on the panel to be stamped, in order to prevent it from slipping. If the panel slips, the stamping process is altered and stopped, which very adversely affects the performance of the press.
- Therefore, in light of the above, there is a clear need to obtain pincers for stamping presses with a transfer system which are capable of exerting a greater effort on the panel to be stamped, in order to increase the speed of the press (cycles per minute) and achieve an increase in production (panels per minute).
- The objective of the present invention is to provide an improved pincer for a stamping press with a transfer system that makes it possible to safely increase the working speed of the press and, consequently, the productivity thereof.
- Following this objective, according to a first aspect, the present invention provides an improved pincer for a stamping press with a transfer system, which comprises fastening arms of a workpiece to be stamped and a support body equipped with an inner cavity that houses a fluid-dynamic cylinder, said cylinder being capable of actuating a first fastening of the pincer, which is attached articulated with said support body, and is characterized in that a portion of said support body defines a second fastening arm, such that said second fastening arm is built into the support body of the pincer.
- One difference between the pincers disclosed in the prior art and the pincer of the present invention lies in that the second fastening arm is integrated within or built into the support body of the pincer, i.e. it is a part of the same support body that incorporates the articulated arm. Thanks to this, a more rigid pincer is obtained, which is capable of fastening the workpiece to be stamped more safely; this, in turn, translates into an increase in the productivity of the press (possibility to accelerate the movement of the transfer system).
- In the pincers disclosed in the prior art, the second fastening arm is made up of a plate that is attached together with the support body. This configuration facilitates the insertion of the electric cabling that supplies the occupancy sensor of the panel to be stamped, but has the disadvantage that it limits the pincer's fastening capacity.
- In addition to providing a greater fastening capacity, the pincer of the present invention provides other advantages, which are described below.
- According to a preferred embodiment, the pincer preferably comprises an inlet and an outlet for the feed fluid of the fluid-dynamic cylinder (for example, a pneumatic cylinder), which are located on one side of said support body.
- It has been observed that this feature makes it possible to save space (shorter total length of the body) and, moreover, makes it possible to place tubes with a larger diameter in order to feed a higher fluid flow rate. Using a higher fluid flow rate translates into an increase in productivity (more cycles per minute). In the prior art, the fluid inlets and outlets are located on the rear part of the body of the pincer, which conditions the length thereof.
- Advantageously, according to the same preferred embodiment, the pincer comprises an occupancy sensor for the workpiece to be stamped, which includes a supply cable integrated within the portion of the support body that defines the second arm. This feature contributes to reducing the total height of the pincer, which makes it possible to save space.
- Also advantageously, the first articulated fastening arm is configured in such a way that it comprises one end equipped with at least one through-hole for a fastening tip for the panel and a nut-and-bolt set configured so as to affix said fastening tip at the top of the interior of said hole.
- In the present invention, the fastening tip is introduced into a through-hole of the arm and affixed at the top of the interior of said hole, without the need to use an upper fixing plate, as in the case of the clamps disclosed in the prior art. This feature makes it possible to reduce both the length of the arm and the number of pincer components and, consequently, the weight thereof. Moreover, it also makes it possible to obtain an articulated arm with a smaller turn radius, which contributes to achieving a greater fastening effort.
- Preferably, the end opposite the first articulated fastening arm comprises a slot which acts as a guide for an actuator bearing integrally attached with the cylinder rod that actuates said arm. It has been observed that this actuator bearing prolongs the useful life of the pincer.
- Advantageously, the first fastening arm is attached articulated with the body of the pincer at an articulation point that is substantially aligned with the second fastening arm. Consequently, shorter fastening tips may be used, which contributes to reducing the total weight of the arm.
- According to a preferred embodiment, the rear chamber of the cylinder designed for the inlet and outlet of fluid comprises a shock-absorbing element that acts as a stopper for the cylinder piston, said shock-absorbing element being sized such that it absorbs the kinetic energy originating from the motion of the first articulated fastening arm of the pincer and contributes to obtaining a greater speed for the upper arm.
- The shock-absorbing element makes it possible to significantly reduce the noise produced by the pincer when it is in operation, which makes it possible to improve the environmental conditions at the workplace.
- Advantageously, the fluid-dynamic cylinder comprises a sealing gasket that is also configured to act as a scraper gasket for the cylinder rod. In this way, the friction coefficient with the cylinder rod is reduced, which contributes to obtaining a greater working speed.
- Preferably, the diameter of the fluid-dynamic cylinder is greater than 20 mm, for example, a diameter of 25 mm, which contributes to obtaining a pincer with greater fastening force.
- Thanks to the aforementioned characteristics, an improved pincer is obtained which has a simple, compact design and presents the following advantages with respect to the pincers disclosed in the prior art:
- It presents 39% less components
- It has a 16% lower weight
- The length thereof is 33% shorter
- The fastening force thereof is 75% greater
- All these advantages result in a reduction in maintenance costs and a very significant increase in the productivity of the stamping press.
- In order to contribute to a better understanding of the above, a set of drawings is attached wherein, schematically, and only as a non-limiting example, an embodiment is represented.
- The drawings in
Figures 1 to 6 represent the pincers of the present invention, whereasFigures 7 and 8 represent a pincer disclosed in the prior art. -
Figures 1 and 2 show perspective views of a pincer with a single fastening tip, in the open position and closed position, respectively. -
Figures 3 and 4 show perspective views of a pincer with two fastening tips, in the open position and closed position, respectively. -
Figures 5 and 6 show two longitudinal sections of the pincer ofFigures 1 and 2 , in the open and closed positions, respectively. -
Figures 7 and 8 show two longitudinal sections of a pincer disclosed in the prior art, in the open and closed positions, respectively. - Below we describe an embodiment of a pincer of the present invention by referring to
Figures 1 to 8 .Figures 7 and 8 correspond to a pincer already known in the prior art.Figures 1 to 6 show an embodiment of the pincer wherein the fastening arms are actuated by a pneumatic cylinder by means of an actuator bearing associated with the cylinder rod. The pincer described in this embodiment is equipped with a support body made of treated steel and a pneumatic cylinder with a diameter of 25 or 32 mm. -
Figures 1 to 4 represent several perspective views of thepincer 1 of the present invention, in the open and closed positions, with one or twofastening tips 2 for the panel to be stamped. Eachpincer 1 includes two fastening arms 3 of the workpiece to be stamped and asupport body 4 equipped with an inner cavity that houses a pneumatic cylinder 5 (see alsoFigures 5 and 6 ). This fluid-dynamic cylinder 5 actuates afirst fastening arm 3a, which is attached articulated with oneaxis 17 of thesupport body 4. - In the embodiment described herein, the
rear chamber 18 of thepneumatic cylinder 5 comprises a shock-absorbingelement 20 that acts as a stopper for thepiston 19 of thecylinder 5. This shock-absorbing element absorbs the kinetic energy originating from the motion of the first fasteningarm 3a, thereby reducing the noise produced by thepincer 1 when it is in operation. - The
pincer 1 of the present invention is characterized in that aportion 4a of thesupport body 4 defines thesecond fastening arm 3b of the pincer, such that saidarm 3b is built into thesupport body 4 of thepincer 1. Thanks to this, apincer 1 is obtained that is more rigid and with a shorter height, which makes it possible to fasten the workpiece to be stamped more safely, without the risk of slippage and with a high fastening force. In particular, in the embodiment described herein, it has been demonstrated that the pincer with a piston diameter provides a fastening force of up to 180 decanewtons (daN) for a working pressure of 6 bar. - The sections of
Figures 7 and 8 represent a pincer 1' disclosed in the prior art, wherein thesecond fastening arm 3b' is configured by aplate 6 attached to the support body 4', which causes the total height of the pincer 1' to be greater; for example, a height of 58 mm vs. a height of 40 mm for thepincer 1 claimed herein. - As may be seen in
Figures 7 and 8 , corresponding to pincers 1' disclosed in the prior art, the electric cable 7' that supplies the occupancy sensor 8' of the panel to be stamped is placed between theplate 6 and the support body 4'. Unlike the pincers 1' disclosed in the prior art, in thepincer 1 of the present invention, thecable 7 of theoccupancy sensor 8 is integrated within theportion 4a of thesupport body 4 that defines thesecond fastening arm 3b, which contributes to obtaining a shorter total height and provides a more compact design (seeFigures 5 and 6 ). - The
pincer 1 claimed herein comprises an air inlet and anair outlet 9, which are located on oneside 4b of the support body 4 (seeFigures 1 to 6 ), instead of being located on the rear part (seeFigures 7 and 8 ), as in the case of the pincers 1' disclosed in the prior art. Thanks to this, the length of thepincer 1 is shorter than that of the pincers 1' disclosed in the prior art; for example, a length of 130 mm vs. a length of 150 mm (seeFigures 5 and7 ). Moreover, this lateral location makes it possible to use air inlet and outlet tubes with a greater diameter, in order to provide a higher air flow rate, which results in greater productivity. - Another characteristic of the
pincer 1 of the present invention lies in the particular configuration of the geometry of the articulatedarm 3a, which includes the presence of one or more throughholes 11 at the free end thereof. Thefastening tip 2 of thepincer 1 is affixed at the top of the interior of these holes by means of a nut-and-bolt set, without the need to use anadditional fixing plate 13, as in the case of the pincers 1' disclosed in the prior art (seeFigures 5 and 6 , as compared toFigures 7 and 8 ). This feature facilitates designing an articulatedarm 3a with a smaller turn radius, which contributes to increasing the fastening effort of thepincer 1. - The opposite end of the first articulated
arm 3a of thepincer 1 has aslot 14 that acts as a guide for theactuator needle bearing 15, which is integrally attached with therod 6 of thepneumatic cylinder 5 that actuates the articulatedfastening arm 3a.Figures 5 and 6 represent thearticulation axis 17 of thearm 3a. Thisaxis 17 is substantially aligned with thesecond fastening arm 3b, which makes it possible to use a shorter fastening tip 2 (see, once again,Figures 5 and 6 as compared toFigures 7 and 8 ). - When the stamping press is in operation, the articulated
fastening arm 3a of thepincer 1 opens at an approximate angle of 25º, actuated by theactuator bearing 15, until thepiston 19 of thepneumatic cylinder 5 is stopped by the shock-absorbing element 20 (seeFigure 6 ). In order to fasten a workpiece, the same articulatedarm 3a closes upon detecting the workpiece by means of theoccupancy sensor 8 integrated within thesupport body 4 of the pincer 1 (seeFigure 5 ). Once the workpiece has been fastened, thepincer 1 moves jointly with the workpiece actuated by the motion bar of the transfer system. - As has been described, the
pincer 1 claimed herein guarantees perfect fastening of the workpiece to be stamped, even at high accelerations. When the working speed increases, the productivity very significantly increases. - Although we have referred to a specific embodiment of the invention, it is evident for persons skilled in the art that the
pincer 1 described herein is susceptible to numerous variations and modifications, and that all the features mentioned may be replaced with other technically equivalent ones, whilst maintaining the scope of protection defined by the attached claims.
Claims (9)
- Improved pincer (1) for a stamping press with a transfer system, which comprises fastening arms (3) of a workpiece to be stamped and a support body (4) equipped with an inner cavity that houses a fluid-dynamic cylinder (5), said cylinder (5) being capable of actuating a first fastening arm (3a) of the pincer (1), which is attached articulated with said support body (4), characterized in that a portion (4a) of said support body (4) defines a second fastening arm (3b), such that said second fastening arm (3b) is built into the support body (4) of the pincer (1).
- Improved pincer (1) according to claim 1, comprising two feed fluid inlet and outlet (9) located on one side (4b) of said support body (4).
- Improved pincer (1) according to claim 1, wherein said first fastening arm (3a) is attached articulated with the body (4) of the pincer (1) on an articulation axis (17) that is substantially aligned with the second fastening arm (3b).
- Improved pincer (1) according to any of claims 1 to 3, wherein said first fastening arm (3a) is configured in such a way that it comprises one end equipped with at least one through-hole for a fastening tip (2) for the workpiece and a nut-and-bolt set designed to affix said fastening tip (2) at the top in the interior of the hole.
- Improved pincer (1) according to claim 4, wherein the end opposite said first fastening arm (3a) comprises a slot (14) which acts as a guide for an actuator bearing (15) that is integrally attached with the rod (16) of the actuator cylinder (5) of said articulated arm (3a).
- Improved pincer (1) according to any of the preceding claims, wherein the rear chamber (18) for the inlet and outlet of fluid comprises a shock-absorbing element (20) that acts as a stopper for the piston (19) of the cylinder (5), said shock-absorbing element being sized so as to absorb the kinetic energy originating from the motion of the first articulated fastening arm (3a) of the pincer (1).
- Improved pincer (1) according to claim 6, wherein the cylinder (5) comprises a sealing gasket configured so as to also act as a scraper gasket for the rod (16) of the cylinder (5).
- Improved pincer (1) according to any of claims 1 to 7, comprising an occupancy sensor (8) for the workpiece to be stamped, which includes a supply cable (7) integrated within the portion (4a) of the support body (4) that defines said second fastening arm (3a).
- Improved Pincer (1) according to claim 8, wherein said fluid-dynamic cylinder is a pneumatic cylinder (5) with a diameter greater than 20 mm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201530666U ES1140856Y (en) | 2015-06-08 | 2015-06-08 | IMPROVED CLAMP FOR STAMP PRESS WITH TRANSFER SYSTEM |
Publications (2)
Publication Number | Publication Date |
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EP3103558A1 true EP3103558A1 (en) | 2016-12-14 |
EP3103558B1 EP3103558B1 (en) | 2018-01-03 |
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Application Number | Title | Priority Date | Filing Date |
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EP16382259.6A Active EP3103558B1 (en) | 2015-06-08 | 2016-06-06 | Improved pincer for a stamping press with a transfer system |
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EP (1) | EP3103558B1 (en) |
ES (2) | ES1140856Y (en) |
PT (1) | PT3103558T (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2022128535A1 (en) * | 2020-12-17 | 2022-06-23 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Readjustment device and readjustment method for a plate-shaped workpiece in a processing machine |
EP3981546B1 (en) * | 2019-06-04 | 2024-07-03 | Miquel Sarabia Trilla | Pneumatic clamp for plates with tilting jaws |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106041975B (en) * | 2016-06-27 | 2017-04-12 | 扬州金威环保科技有限公司 | Connecting rod type hydraulic clamping device |
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US20010003388A1 (en) * | 1999-12-08 | 2001-06-14 | Hidehito Takahashi | Clamp apparatus |
US20030151266A1 (en) * | 2001-03-16 | 2003-08-14 | Moilanen Steven M. | Article sensor assembly |
EP0935516B1 (en) * | 1996-10-07 | 2004-01-21 | PHD, Inc. | Modular stamped parts transfer gripper |
DE102004040606B3 (en) * | 2004-08-21 | 2006-01-12 | Tünkers Maschinenbau Gmbh | Crank lever clamping device for vehicle bodywork components has at least one connecting rod, by which first turning axis is coupled |
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2015
- 2015-06-08 ES ES201530666U patent/ES1140856Y/en active Active
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2016
- 2016-06-06 ES ES16382259.6T patent/ES2668371T3/en active Active
- 2016-06-06 EP EP16382259.6A patent/EP3103558B1/en active Active
- 2016-06-06 PT PT163822596T patent/PT3103558T/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0935516B1 (en) * | 1996-10-07 | 2004-01-21 | PHD, Inc. | Modular stamped parts transfer gripper |
US20010003388A1 (en) * | 1999-12-08 | 2001-06-14 | Hidehito Takahashi | Clamp apparatus |
US20030151266A1 (en) * | 2001-03-16 | 2003-08-14 | Moilanen Steven M. | Article sensor assembly |
DE102004040606B3 (en) * | 2004-08-21 | 2006-01-12 | Tünkers Maschinenbau Gmbh | Crank lever clamping device for vehicle bodywork components has at least one connecting rod, by which first turning axis is coupled |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3981546B1 (en) * | 2019-06-04 | 2024-07-03 | Miquel Sarabia Trilla | Pneumatic clamp for plates with tilting jaws |
WO2022128535A1 (en) * | 2020-12-17 | 2022-06-23 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Readjustment device and readjustment method for a plate-shaped workpiece in a processing machine |
Also Published As
Publication number | Publication date |
---|---|
PT3103558T (en) | 2018-04-05 |
EP3103558B1 (en) | 2018-01-03 |
ES2668371T3 (en) | 2018-05-17 |
ES1140856U (en) | 2015-07-06 |
ES1140856Y (en) | 2015-09-30 |
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