Automatic sliding block stroke adjusting device

Abstract

According to the automatic sliding block stroke adjusting device, the connecting rod transmission module, the linkage sleeve piece and the clutch module are installed on the crankshaft, so that when the length of the stroke of the sliding block of a punching machine needs to be adjusted, the clutch module can be electrically controlled by the controller to drive the linkage sleeve piece to be separated from the connecting rod shaft of the connecting rod transmission module, and the stroke of the sliding block is adjusted. A connecting rod locking assembly arranged on a connecting rod transmission module is electrically controlled by the controller to be aligned with and lock a connecting rod shaft bearing of the connecting rod assembly and a connecting rod cover, so that the connecting rod cover is ensured to synchronously rotate along with the connecting rod shaft bearing, and the aim of automatically deflecting and adjusting the stroke of a sliding block and the position of the sliding block is fulfilled; a sliding block stroke adjusting mode which is easy to operate and safe is provided, and tedious operation of manually adjusting the position of the sliding block is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of punching machines, in particular to an automatic slide stroke adjustment device which automatically adjusts a slide to align with a lower dead point. Background Art

[0002] A punch press is a machine that is specially used to apply pressure to metal materials to make them plastically deform to obtain a specific shape and precision. In the operation of a punch press, the slider refers to an important component that moves up and down to punch metal materials through the drive of the punch press, and the distance from the highest point (top dead center) of the slider's range of motion to the lowest point (bottom dead center) of its range of motion is called the slider stroke.

[0003] In the field of punching machines, adjusting the length of the slide stroke is a common and necessary task. This is mainly because the thickness of the workpiece may change, and the stroke length of the slide needs to adapt to the new workpiece thickness. In addition, different molds may require different stroke lengths to ensure correct forming or cutting. In some cases, in order to maximize production efficiency, it may also be necessary to adjust the stroke of the slide to shorten the impact time and increase production speed. Of course, ensuring the quality of the workpiece is also a reason for adjustment, especially when there is a problem with the quality of the workpiece.

[0004] Common methods for manually adjusting the stroke length of the slider include adjusting the position of the crankshaft or eccentric shaft, using an adjustable connecting rod, or replacing connecting rods of different lengths. Although these methods are effective, they usually require experience and skills, and the machine needs to be shut down during the manual adjustment process and all safety guidelines must be followed to ensure work safety. All of the above make the manual adjustment of the slider position cumbersome. In addition, these manual methods are also prone to errors, resulting in the slider failing to accurately align the dead point after adjustment.

[0005] Therefore, how to develop a device that can automatically adjust the stroke of the slider to ensure that the slider is aligned with the dead point of the punch press has become an urgent need. Summary of the invention

[0006] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an automatic slider stroke adjustment device, which installs a connecting rod transmission module, a linkage kit and a clutch module on the crankshaft, so that when the punch press needs to adjust the length of the slider stroke, the clutch module can be electrically controlled by the controller to drive the linkage kit to separate from the connecting rod shaft of the connecting rod transmission module, and then the controller electrically controls the connecting rod locking assembly provided in the connecting rod transmission module to align and lock the connecting rod shaft and the connecting rod cover of the connecting rod assembly, ensuring that the connecting rod cover rotates synchronously with the connecting rod shaft, so as to achieve the purpose of automatically adjusting the slider stroke and the negative return slider position, thereby providing an easy-to-operate and safe slider stroke adjustment method, and effectively avoiding the tedious operation of manually adjusting the slider position.

[0007] To achieve the above-mentioned purpose, the present invention provides an automatic slider stroke adjustment device, which includes: a controller; a driving mechanism, including a crankshaft electrically controlled by the controller; a connecting rod transmission module, including a connecting rod assembly and a connecting rod locking assembly; the connecting rod assembly has a connecting rod bearing arranged on the outside of the crankshaft and a connecting rod cover arranged on the outside of the connecting rod bearing; a connecting rod is provided at the bottom of the connecting rod cover, and a telescopic hole is penetrated through the top of the connecting rod cover along the axial direction of the connecting rod; a calibration groove is recessed on the outer surface of the connecting rod bearing for the telescopic hole, and one of the end surfaces of the connecting rod bearing is convexly provided with a first ring tooth portion along the axial direction of the crankshaft; the connecting rod locking assembly is installed on the outside of the connecting rod cover and has a calibration pin that is electrically controlled by the controller and telescopes along the axial direction of the connecting rod; a linkage kit is sleeved on the outside of the crankshaft to The axial movement is to a transmission position or an adjustment position; one end surface of the linkage kit is protruding with a second ring tooth portion along the axial direction; a clutch module is fixedly installed on the shaft end of the crankshaft with the linkage kit, and the clutch module is electrically controlled by the controller to drive the linkage kit to move with pressure; when the linkage kit is located at the transmission position, the second ring tooth portion is engaged with the first ring tooth portion, and the connecting rod shaft and the connecting rod cover are unlocked by retreating from the calibration groove through the calibration pin, so that the connecting rod transmission module is driven by the linkage kit to pull the slider to move; when the linkage kit is located at the adjustment position, the second ring tooth portion is separated from the first ring tooth portion, and the connecting rod shaft and the connecting rod cover are locked by extending the calibration pin into the calibration groove, so that the connecting rod transmission module is driven by the crankshaft to adjust the yaw slider stroke and the negative return slider position.

[0008] Preferably, the crankshaft has a first shaft section, a second shaft section and a third shaft section, a ring rib protrudes between the first shaft section and the second shaft section, and the second shaft section and the third shaft section are connected at a contraction to form an annular shoulder; the connecting rod transmission module is sleeved on the outside of the second shaft section and limited between the annular rib and the linkage kit, the linkage kit is sleeved and limited by the annular shoulder to slide on the outside of the third shaft section, and the clutch module is installed at the end of the third shaft section.

[0009] More preferably, the outer surface of the third shaft segment is recessed with a first groove along the radial direction of the crankshaft; a limit key is fixedly arranged in the first groove, and part of the limit key protrudes out of the first groove along the radial direction; the linkage kit is further formed with a set of holes and a second groove, the set of holes is for being sleeved on the third shaft segment, the second groove is recessed along the radial direction and is formed on the hole wall of the set of holes and has two ends passing through the end surface of the linkage kit; the linkage kit is arranged to accommodate the limit key through the second groove so as to be movably and slidably sleeved on the outside of the third shaft segment along the axial direction.

[0010] More preferably, the end face of the third shaft section of the crankshaft is recessed with a thread groove along the axial direction; the linkage kit has a set of holes for sleeved on the outside of the third shaft section; the clutch module is internally formed with a groove chamber and a through hole connected to the groove chamber and is provided with a piston, the piston has a valve head, a screw and a sliding rod section connected between the valve head and the screw; the piston is fixed to the end face of the third shaft section by locking the screw with the thread groove, the valve head is movably accommodated in the groove chamber and sealed with the wall of the groove chamber, the screw is movably inserted into the through hole and The surface of the through hole is sealed and combined; wherein the groove chamber is separated by the valve head to form a first chamber connected to a first pressure-driven cylinder and a second chamber connected to a second pressure-driven cylinder; the first pressure-driven cylinder and the second pressure-driven cylinder are electrically controlled by the controller, and the first chamber and the second chamber change their volumes through pressurization or depressurization of the first pressure-driven cylinder and the second pressure-driven cylinder, thereby driving the clutch module to move along the slide rod section of the piston through the through hole and drive the linkage kit to move along the crankshaft to the transmission position or the adjustment position.

[0011] More preferably, the clutch module comprises a piston cylinder seat, an adjustment fixing plate, the piston, a flow channel cylinder seat and a rotary joint; wherein the piston cylinder seat is concavely formed with the groove chamber and has a second flow channel connected to the second chamber and the second pressure driving cylinder, and the piston cylinder seat has a through opening corresponding to the first chamber; the adjustment fixing plate is clamped and fixed between the piston cylinder seat and the linkage kit and has the through hole; the flow channel cylinder seat is fixed to the outside of the piston cylinder seat, and a channel connected to the through opening of the piston cylinder seat is penetrated inside the flow channel cylinder seat, so that the through opening and the channel are connected to form a pressure inlet channel connected to the first chamber; the rotary joint is connected to the flow channel cylinder seat, and a first flow channel connected to the first pressure driving cylinder and the pressure inlet channel is provided inside the rotary joint.

[0012] Even more preferably, the piston cylinder seat and the adjustment fixing plate of the clutch module are locked on the other end surface of the linkage kit after being penetrated along the axial direction by a plurality of bolts.

[0013] Preferably, the top of the connecting rod cover of the connecting rod assembly is recessed with a mounting groove on the periphery of the telescopic hole; the connecting rod locking assembly comprises a cylinder fixing seat, a calibration pin pressure driving cylinder and the calibration pin; the bottom of the cylinder fixing seat is fixed in the mounting groove of the connecting rod cover, the calibration pin pressure driving cylinder is fixed on the top of the cylinder fixing seat, the calibration pin is inserted into the cylinder fixing seat and connected to the calibration pin pressure driving cylinder; the calibration pin pressure driving cylinder is electrically controlled by the controller to drive the calibration pin to telescopically move inside the cylinder fixing seat, in the telescopic hole of the connecting rod cover and in the calibration groove of the connecting rod shaft.

[0014] Preferably, the linkage kit and the clutch module are supported and installed in a punch press via a shaft seal fixing seat.

[0015] More preferably, the shaft seal fixing seat includes a support shaft, a machine plate and an L-shaped bracket; wherein, the support shaft is sleeved on the outside of the linkage kit; the machine plate is integrally formed on the outside of the support shaft; the L-shaped bracket is formed with a vertical support arm and a horizontal support arm, the end of the vertical support arm is movably connected to the rotary joint of the clutch module, and the end of the horizontal support arm is fixedly connected to the machine plate; when the clutch module and the linkage kit are rotated by the crankshaft, the rotary joint rotates relative to the end of the vertical support arm and is supported by it, and the linkage kit rotates relative to the support shaft and is supported by it.

[0016] Preferably, the driving mechanism includes a driving shaft, a main gear and the crankshaft, the crankshaft having a first shaft section and a plug-in shaft section formed by shrinking from the end of the first shaft section; the main gear axis is coaxially fixed to the plug-in shaft section; the end of the driving shaft is provided with a toothed structure for engaging with the main gear to drive the main gear to pull the crankshaft to rotate.

[0017] With regard to the techniques, means and other effects adopted by the present invention to achieve the above-mentioned objects, preferred feasible embodiments are given herewith and described in detail with reference to the drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional appearance schematic diagram of the automatic slider stroke adjustment device of the present invention;

[0019] Figure 2 It is a cross-sectional schematic diagram of the automatic slider stroke adjustment device of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the clutch mechanism of the device of the present invention in a locked state;

[0021] Figure 4 It is a schematic structural diagram of the clutch mechanism of the device of the present invention in an unlocked state;

[0022] Figure 5 It is a schematic structural diagram of the connecting rod transmission mechanism of the device of the present invention in an initial state;

[0023] Figure 6 It is a schematic structural diagram of the connecting rod transmission mechanism of the device of the present invention in a deflection state;

[0024] Figure 7 It is a structural schematic diagram of the connecting rod transmission mechanism of the device of the present invention in the negative return state.

[0025] Description of symbols in the accompanying drawings:

[0026] 10: Driving mechanism

[0027] 11: Drive shaft

[0028] 12: Main gear

[0029] 121: The Third Groove

[0030] 13: Crankshaft

[0031] 131: First shaft section

[0032] 132: Second shaft section

[0033] 133: Ring rib

[0034] 134: First trench

[0035] 135: Thread groove

[0036] 136: The third axis segment

[0037] 137: Shoulder ring

[0038] 138: Splice shaft segment

[0039] 14: Gear cover

[0040] 15: Limit key

[0041] 16: Screw

[0042] 17: Positioning key

[0043] 20: Connecting rod transmission module

[0044] 201: Connecting rod assembly

[0045] 202: Connecting rod locking assembly

[0046] 21: Connecting rod bearing

[0047] 211: Hole

[0048] 212: First ring tooth portion

[0049] 213: Calibration tank

[0050] 22: Connecting rod cap

[0051] 221: Sleeve hole

[0052] 222: Installation slot

[0053] 223: Telescopic hole

[0054] 23: Connecting rod

[0055] 24: Sawtooth

[0056] 25: Cylinder fixing seat

[0057] 26: Calibration pin pressure drive cylinder

[0058] 27: Calibration pin

[0059] 30: Linkage

[0060] 31: Hole

[0061] 32: Second trench

[0062] 33: Second ring gear

[0063] 40: Clutch module

[0064] 41: Piston cylinder seat

[0065] 411: Second flow channel

[0066] 42: Adjust the fixing plate

[0067] 421: Perforation

[0068] 43: Piston

[0069] 431: Valve head

[0070] 432: Screw

[0071] 433: Slider segment

[0072] 44: Runner cylinder seat

[0073] 441: Inlet pressure channel

[0074] 45: Rotary joint

[0075] 451: First runner

[0076] 46: Bolt

[0077] 47: First pressure drive cylinder

[0078] 48: Second pressure drive cylinder

[0079] 50: Controller

[0080] 60: Shaft seal fixing seat

[0081] 61: Support shaft

[0082] 62: Machine panels

[0083] 63: L-shaped bracket

[0084] 631: Vertical arm

[0085] 632: Horizontal support arm

[0086] X: Axial

[0087] Y: Radial

[0088] P1: First position

[0089] P2: Second position

[0090] α: Angle

[0091] β: Angle

[0092] R1: First chamber

[0093] R2: Second chamber DETAILED DESCRIPTION

[0094] To facilitate understanding of the present invention, the following is described in conjunction with the embodiments. It should be noted that in the following description, similar components and part names are represented by the same numbers, and the directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used in the embodiments are used to illustrate and not to limit the present invention.

[0095] The present invention provides an automatic slider stroke adjustment device, which is used to be installed in a punch press to automatically control the swing and return of a connecting rod connected to the slider, so as to adjust the slider stroke length and adjust the slider to align with the upper and lower dead points. Figure 1 , Figure 2 As shown, the automatic slider stroke adjustment device of the present invention mainly includes a driving mechanism 10, a connecting rod transmission module 20, a linkage kit 30 and a clutch module 40; wherein, the driving mechanism 10, the connecting rod transmission module 20 and the clutch module 40 are electrically connected to a controller 50 so as to be electrically controlled by the controller 50 for automatic operation; thus, the clutch module 40 is controlled by the controller 50 to pull the linkage kit 30 to move along a crankshaft 13 of the driving mechanism 10 via communication, so that the linkage kit 30 is combined with the connecting rod transmission module 20 to drive the slider to move, or the linkage kit 30 is separated from the connecting rod transmission module 20 to adjust the slider stroke and position.

[0096] like Figures 1 to 3 As shown, the driving mechanism 10 includes a driving shaft 11, a main gear 12 and a crankshaft 13; the crankshaft 13 has a first shaft section 131, a second shaft section 132 and a third shaft section 136 extending along an axial direction X, and the crankshaft 13 is protruded along a radial direction Y at the connection between the first shaft section 131 and the second shaft section 132 to form an annular convex rib 133; the axis of the main gear 12 is coaxially fixed to the first shaft section 131; the end of the driving shaft 11 is provided with a toothed structure for meshing with the main gear 12 to drive the main gear 12 to pull the crankshaft 13 to rotate.

[0097] In the embodiment of the present invention, Figure 2 As shown, the end of the first shaft section 131 of the crankshaft 13 is contracted to form a plug-in shaft section 138, and a positioning key 17 is convexly provided on the surface of the plug-in shaft section 138, and the length direction of the positioning key 17 extends along the axial direction X; the main gear 12 is formed with an axial hole and a third groove 121, and the axial hole is provided to be sleeved on the plug-in shaft section 138, and the third groove 121 is formed on the hole wall of the axial hole along the radial direction Y and the two ends pass through the two side end surfaces of the gear pressing cover 14; the main gear 12 is allowed to pass through the third groove 121 to accommodate the positioning key 17 and be sleeved on the outside of the plug-in shaft section 138 along the axial direction X, so that the main gear 12 and the crankshaft 13 are coaxially fixed. In addition, a gear pressing cover 14 is fixedly screwed to the end of the plug-in shaft section 138 of the crankshaft 13 to prevent the main gear 12 from being separated from the end of the first shaft section 131.

[0098] like Figures 1 to 3 As shown, the connecting rod transmission module 20 is arranged outside the second shaft section 132 of the crankshaft 13, the linkage kit 30 is arranged outside the third shaft section 136 of the crankshaft 13, and the connecting rod transmission module 20 is limited between the annular rib 133 and the linkage kit 30, and the clutch module 40 is installed on the end of the third shaft section 136.

[0099] Specifically, Figure 2 , Figure 3 As shown, the connecting rod transmission module 20 includes a connecting rod assembly 201 for connecting the punch slide and a connecting rod locking assembly 202 disposed on the top of the connecting rod assembly 201 .

[0100] Among them, the connecting rod assembly 201 mainly includes a connecting rod bearing 21, a connecting rod cover 22 and a connecting rod 23; the connecting rod bearing 21 has a set hole 211 sleeved on the outside of the second shaft section 132 of the crankshaft 13, the connecting rod cover 22 has a set hole 221 sleeved on the outside of the connecting rod bearing 21, the connecting rod 23 is provided at the bottom of the connecting rod cover 22, a telescopic hole 223 is penetrated through the top of the connecting rod cover 22 along the axial direction of the connecting rod 23, and the top of the connecting rod cover 22 is concavely expanded outward from the periphery of the telescopic hole 223 to form a mounting groove 222; the outer surface of the connecting rod bearing 21 is concavely provided with a calibration groove 213 corresponding to the telescopic hole 223, and one of the end surfaces of the connecting rod bearing 21 is convexly provided with a first ring tooth portion 212 along the axial direction X of the crankshaft 13.

[0101] The connecting rod locking assembly 202 mainly includes a cylinder fixing seat 25, a calibration pin pressure drive cylinder 26 and a calibration pin 27; the bottom of the cylinder fixing seat 25 is fixed in the mounting groove 222 of the connecting rod cover 22, the calibration pin pressure drive cylinder 26 is fixed in the top of the cylinder fixing seat 25, and the calibration pin 27 is inserted into the cylinder fixing seat 25 and connected to the calibration pin pressure drive cylinder 26; the calibration pin pressure drive cylinder 26 is electrically controlled by the controller 50 to drive the calibration pin 27 to telescope in the cylinder fixing seat 25, in the telescopic hole 223 of the connecting rod cover 22 and in the calibration groove 213 of the connecting rod bearing 21. In the embodiment of the present invention, the calibration pin pressure drive cylinder 26 can be a pneumatic cylinder or a hydraulic cylinder.

[0102] In the embodiment of the present invention, the connecting rod 23 is formed as a hollow sleeve, and a saw tooth 24 is coaxially arranged inside. The bottom of the saw tooth 24 is formed as a ball head for assembly with the punching machine slider.

[0103] In the embodiment of the present invention, a wear-resistant ring is preferably provided between the inner wall of the sleeve hole 211 of the connecting rod bearing 21 and the outer surface of the crankshaft 13; a copper sleeve is preferably provided between the inner wall of the sleeve hole 221 of the connecting rod cover 22 and the outer surface of the connecting rod bearing 21. The wear-resistant ring and the copper sleeve are mainly used to make the operation between the connecting rod bearing 21 and the crankshaft 13 or between the connecting rod bearing 21 and the connecting rod cover 22 smoother, reduce wear, extend the life of the bearing and the crankshaft, and protect the entire mechanism from excessive friction or vibration damage.

[0104] like Figures 1 to 3 As shown, the linkage kit 30 is sleeved on the outside of the third shaft section 136 of the crankshaft 13 to move to a transmission position or an adjustment position along the axial direction X. Specifically, the linkage kit 30 has a sleeve hole 31 sleeved on the outside of the third shaft section 136 of the crankshaft 13, and a second groove 32 is formed on the hole wall of the sleeve hole 31 along the radial direction Y, and the two ends of the second groove 32 pass through the two end surfaces of the linkage kit 30 in the axial direction X, and one of the end surfaces of the linkage kit 30 is convexly provided with a second ring tooth portion 33 along the axial direction X.

[0105] like Figure 2 , Figure 3 As shown, the crankshaft 13 and the linkage kit 30 are mainly connected by a limit key 15, so that the crankshaft 13 and the linkage kit 30 form a movable connection relationship that can slide relative to each other along the axial direction X but cannot rotate relative to each other. In the embodiment of the present invention, the third shaft section 136 of the crankshaft 13 is recessed with a first groove 134 along the radial direction Y; a limit key 15 is fixedly arranged in the first groove 134, and a part of the limit key 15 protrudes outside the first groove 134 along the radial direction Y; thus, the linkage kit 30 accommodates the limit key 15 through the second groove 32 so as to be movably and slidably sleeved on the outside of the third shaft section 136 along the axial direction X.

[0106] In the embodiment of the present invention, the limit key 15 can be locked on the third shaft section 136 by two screws 16 passing through.

[0107] In the embodiment of the present invention, the connection between the second shaft section 132 and the third shaft section 136 of the crankshaft 13 is preferably contracted to form an annular shoulder 137, and the annular shoulder 137 is used to limit the sliding of the linkage kit 30 along the third shaft section 136, while ensuring the relative position of the linkage kit 30 and the connecting rod shaft 21 when they are engaged, to avoid excessive engagement and damage between the two.

[0108] like Figures 1 to 3 As shown, the clutch module 40 is fixedly connected to the linkage kit 30 and installed at the end of the third shaft section 136 of the crankshaft 13. In the embodiment of the present invention, the end surface of the third shaft section 136 of the crankshaft 13 is concavely formed with a thread groove 135 along the axial direction X. The clutch module 40 mainly includes a piston cylinder seat 41, an adjustment fixing plate 42, a piston 43, a flow channel cylinder seat 44 and a rotary joint 45.

[0109] In the embodiment of the present invention, Figure 3 As shown, the piston cylinder seat 41 is concavely formed with a groove chamber and has a second flow channel 411 and a through port. The adjustment fixing plate 42 is sandwiched and fixed between the piston cylinder seat 41 and the end surface of the linkage kit 30 and has a through hole 421. The piston 43 has a valve head 431, a screw rod 432 and a slide rod section 433 connected and formed between the valve head 431 and the screw rod 432; the piston 43 is fixed on the end surface of the crankshaft 13 by locking the screw rod 432 with the thread groove 135, the valve head 431 is movably accommodated in the groove chamber inside the piston cylinder seat 41 and is sealed and combined with the wall surface of the groove chamber, and the screw rod 432 is movably inserted into the through hole 421 of the adjustment fixing plate 42 and is sealed and combined with the surface of the through hole 421.

[0110] In the embodiment of the present invention, Figure 1 , Figure 5 As shown, the piston cylinder seat 41 and the adjustment fixing plate 42 of the clutch module 40 are penetrated along the axial direction X and then locked on the other end surface of the linkage kit 30 by a plurality of bolts 46 .

[0111] In the embodiment of the present invention, Figure 3As shown, the flow channel cylinder seat 44 is fixedly arranged outside the piston cylinder seat 41, and a passage connected to the through port of the piston cylinder seat 41 is penetrated inside the flow channel cylinder seat 44, so that the through port and the passage are connected to form a pressure inlet passage 441. The rotary joint 45 is connected to the flow channel cylinder seat 44, and a first flow channel 451 is arranged inside the rotary joint 45. The groove chamber inside the piston cylinder seat 41 is divided by the valve head 431 of the piston 43 to form a first chamber R1 and a second chamber R2; the first chamber R1 is connected to a first pressure driving cylinder 47 via the first flow channel 451 and the pressure inlet channel 441, and the second chamber R2 is connected to a second pressure driving cylinder 48 via the second flow channel 411; the first pressure driving cylinder 47 and the second pressure driving cylinder 48 increase or release the internal pressure of the chamber by inputting or outputting fluid based on the same principle, thereby expanding the chamber volume when increasing the pressure and reducing the chamber volume when releasing the pressure.

[0112] Therefore, when the automatic slider stroke adjustment device of the present invention is in normal operation, the linkage kit 30 is located at the transmission position. Figure 3 As shown, the second ring tooth portion 33 is meshed with the first ring tooth portion 212, and the connecting rod shaft 21 and the connecting rod cover 22 are unlocked by retracting the calibration pin 27 from the calibration groove 213, so that the connecting rod transmission module 20 is driven by the linkage kit 30 to pull the slider to actuate.

[0113] When the automatic slider stroke adjustment device of the present invention needs to adjust the slider stroke, such as Figure 3 to Figure 4 As shown, the controller 50 is used to electrically control the first pressure drive cylinder 47 to increase the pressure of the first chamber R1, and to electrically control the second pressure drive cylinder 48 to release the pressure of the second chamber R2, so that the volume of the first chamber R1 is expanded and the volume of the second chamber R2 is reduced, and finally the clutch module 40 is pushed and driven to move toward the left side of the figure, and at the same time, the linkage kit 30 fixedly connected to the clutch module 40 is driven to move, so that the second ring tooth portion 33 of the linkage kit 30 is separated from the first ring tooth portion 212 of the connecting rod assembly 201 (as shown in FIG. Figure 4 , Figure 5 ) and is located in the adjustment position.

[0114] Then, if Figure 4 As shown, to ensure that the connecting rod bearing 21 and the connecting rod cover 22 rotate coaxially, before adjusting the slider stroke, the controller 50 is first used to electrically control the calibration pin 27 of the connecting rod locking assembly 202 to extend outward and insert into the calibration slot 213 to lock the connecting rod bearing 21 and the connecting rod cover 22. Figures 5 and 6As shown, since the connecting rod transmission module 20 is separated from the linkage kit 30 and is not driven by it, the controller 50 is used to electrically control the main gear 12 to rotate an angle β to drive the connecting rod 23 to produce an angle α, and at the same time, the center point of the saw tooth 24 is displaced from the first position P1 to the second position P2, thereby achieving the purpose of adjusting the slider stroke (at Figures 5 and 6 In the embodiment, the center point of the saw tooth 24 drops from the first position P1 to the second position P2, thereby shortening the slider stroke. Figure 6 to Figure 7 As shown, the controller 50 is used to control the rotation of the crankshaft 13 to negatively return the swing angle (angle α) of the aforementioned connecting rod 23, so that the position of the slider is negatively returned to the upper and lower dead points of the stroke, thereby achieving the operation of automatically adjusting the slider stroke and negatively returning the slider position.

[0115] Finally, when the automatic slider stroke adjustment device of the present invention needs to adjust the linkage kit 30 from the adjustment position back to the adjustment position, as shown in FIG. Figure 4 to Figure 3 As shown, the controller 50 is used to electrically control the second pressure drive cylinder 48 to increase the pressure of the second chamber R2, and to electrically control the first pressure drive cylinder 47 to release the pressure of the first chamber R1, so that the volume of the second chamber R2 is expanded and the volume of the first chamber R1 is reduced, and finally the clutch module 40 is pushed and driven to move toward the right side of the figure, and at the same time, the linkage kit 30 fixed to the clutch module 40 is driven to move, so that the second ring tooth portion 33 of the linkage kit 30 is re-engaged with the first ring tooth portion 212 of the connecting rod assembly 201 (as shown in FIG. Figure 3 ) and is located in the adjustment position.

[0116] like Figures 1 to 3 As shown, the automatic slider stroke adjustment device of the present invention further includes a shaft seal fixing seat 60 for supporting and installing the rotary joint 45 in the punch press. In the embodiment of the present invention, the shaft seal fixing seat 60 includes a support shaft 61, a machine plate 62 and an L-shaped bracket 63; wherein, the support shaft 61 is sleeved on the outside of the linkage kit 30; the machine plate 62 is integrally formed on the outside of the support shaft 61; the L-shaped bracket 63 is formed with a vertical support arm 631 and a horizontal support arm 632, the end of the vertical support arm 631 is movably assembled with the rotary joint 45 of the clutch module 40, and the end of the screw 432 is fixedly connected with the machine plate 62; thereby, when the clutch module 40 and the linkage kit 30 are pulled and rotated by the crankshaft 13, the rotary joint 45 rotates relative to the end of the vertical support arm 631 and is supported by it, and the linkage kit 30 rotates relative to the support shaft 61 and is supported by it.

Claims

1. An automatic slider stroke adjustment device, It is characterized in that The automatic slider stroke adjustment device comprises: a controller; a drive mechanism including a crankshaft electrically controlled by the controller; A connecting rod transmission module, comprising a connecting rod assembly and a connecting rod locking assembly; the connecting rod assembly comprises a connecting rod bearing arranged outside the crankshaft and a connecting rod cover arranged outside the connecting rod bearing; a connecting rod is arranged at the bottom of the connecting rod cover, and a telescopic hole is penetrated through the top of the connecting rod cover along the axial direction of the connecting rod; a calibration groove is concavely provided on the outer surface of the connecting rod bearing corresponding to the telescopic hole, and a first ring tooth portion is convexly provided on one end surface of the connecting rod bearing along the axial direction of the crankshaft; the connecting rod locking assembly is installed outside the connecting rod cover and comprises a calibration pin which is electrically controlled by the controller to telescope along the axial direction of the connecting rod; A linkage kit is sleeved on the outside of the crankshaft to move along the axial direction to a transmission position or an adjustment position; one end surface of the linkage kit is protrudingly provided with a second ring tooth portion along the axial direction; a clutch module, fixedly mounted on the shaft end of the crankshaft together with the linkage kit, the clutch module being electrically controlled by the controller to drive the linkage kit to move by pressure; When the linkage kit is located at the transmission position, the second ring tooth portion is meshed with the first ring tooth portion, and the connecting rod shaft and the connecting rod cover are unlocked by retracting from the calibration groove through the calibration pin, so that the connecting rod transmission module is driven by the linkage kit to pull the slider to actuate; when the linkage kit is located at the adjustment position, the second ring tooth portion is separated from the first ring tooth portion, and the connecting rod shaft and the connecting rod cover are locked by extending the calibration pin into the calibration groove, so that the connecting rod transmission module is driven by the crankshaft to adjust the yaw slider stroke and the negative return slider position.

2. The automatic slider stroke adjustment device according to claim 1, It is characterized in that The crankshaft has a first shaft section, a second shaft section and a third shaft section, a ring rib protrudes between the first shaft section and the second shaft section, and a ring shoulder portion is contracted at the connection between the second shaft section and the third shaft section; the connecting rod transmission module is sleeved on the outside of the second shaft section and limited between the ring rib and the linkage kit, and the linkage kit is sleeved and limited by the ring shoulder portion to slide on the outside of the third shaft section, and the clutch module is installed at the end of the third shaft section.

3. The automatic slider stroke adjustment device according to claim 2, It is characterized in that The outer surface of the third shaft segment is provided with a first groove along the radial direction of the crankshaft; a limit key is fixedly provided in the first groove, and a portion of the limit key protrudes out of the first groove along the radial direction; The linkage kit is further formed with a set hole and a second groove, the set hole is for being sleeved on the third shaft segment, the second groove is formed along the radial recess on the hole wall of the set hole and both ends pass through the end surface of the linkage kit; the linkage kit is arranged to accommodate the limit key in the corresponding manner through the second groove so as to be movably and slidably sleeved on the outside of the third shaft segment along the axial direction.

4. The automatic slider stroke adjustment device according to claim 2, It is characterized in that The end surface of the third shaft section of the crankshaft is provided with a thread groove along the axial direction; The linkage kit has a set of holes for sleeve-mounting on the outside of the third shaft segment; The clutch module is internally formed with a groove chamber and a through hole connected to the groove chamber and is provided with a piston, the piston having a valve head, a screw and a slide rod section connected between the valve head and the screw; the piston is fixed on the end surface of the third shaft section by locking the screw with the thread groove, the valve head is movably accommodated in the groove chamber and sealed with the wall surface of the groove chamber, the screw is movably inserted into the through hole and sealed with the surface of the through hole; wherein the groove chamber is divided by the valve head to form a first chamber connected with a first pressure drive cylinder and a second chamber connected with a second pressure drive cylinder; The first pressure-driven cylinder and the second pressure-driven cylinder are electrically controlled by the controller, and the first chamber and the second chamber change their volumes through pressurization or depressurization of the first pressure-driven cylinder and the second pressure-driven cylinder, thereby driving the clutch module to move along the slide rod section of the piston through the through hole and driving the linkage kit to move along the crankshaft to the transmission position or the adjustment position.

5. The automatic slide stroke adjustment device according to claim 4, It is characterized in that The clutch module includes a piston cylinder seat, an adjustment fixing plate, the piston, a flow channel cylinder seat and a rotary joint; wherein, The piston cylinder seat is concavely formed with the groove chamber and has a second flow passage connecting the second chamber and the second pressure drive cylinder, and the piston cylinder seat has a through opening corresponding to the first chamber; The adjusting and fixing plate is clamped and fixed between the piston cylinder seat and the linkage kit and is provided with the through hole; The flow channel cylinder seat is fixedly arranged outside the piston cylinder seat, and a passage connected to the through port of the piston cylinder seat is penetrated inside the flow channel cylinder seat, so that the through port and the passage are connected to form a pressure inlet passage communicating with the first chamber; The rotary joint is connected to the flow channel cylinder seat, and a first flow channel is provided inside the rotary joint to connect the first pressure drive cylinder and the pressure inlet channel.

6. The automatic slide stroke adjustment device according to claim 5, It is characterized in that The piston cylinder seat and the adjusting and fixing plate of the clutch module are locked on the other end surface of the linkage kit after being penetrated along the axial direction by a plurality of bolts.

7. The automatic slide stroke adjustment device according to claim 1, It is characterized in that The top of the connecting rod cover of the connecting rod assembly is concavely provided with a mounting groove around the telescopic hole; The connecting rod locking assembly comprises a cylinder fixing seat, a calibration pin pressure driving cylinder and the calibration pin; the bottom of the cylinder fixing seat is fixed in the mounting groove of the connecting rod cover, the calibration pin pressure driving cylinder is fixed on the top of the cylinder fixing seat, and the calibration pin is inserted into the cylinder fixing seat and connected with the calibration pin pressure driving cylinder; The calibration pin pressure drive cylinder is electrically controlled by the controller to drive the calibration pin to telescope inside the cylinder fixing seat, in the telescopic hole of the connecting rod cover and in the calibration groove of the connecting rod shaft.

8. The automatic slide stroke adjustment device according to claim 1, It is characterized in that The linkage kit and the clutch module are supported and installed in a punch press via a shaft seal fixing seat.

9. The automatic slide stroke adjustment device according to claim 8, It is characterized in that The shaft seal fixing seat comprises a supporting shaft, a machine plate and an L-shaped bracket; wherein, The support shaft is sleeved outside the linkage kit; The machine plate is provided with a mounting opening, and the mounting opening is provided for being sleeved and fixed on the outside of the support shaft; The L-shaped bracket is formed with a vertical arm and a horizontal arm, the end of the vertical arm is movably connected to the rotary joint of the clutch module, and the end of the horizontal arm is fixedly connected to the machine plate; When the clutch module and the linkage kit are rotated by the crankshaft, the rotary joint rotates relative to and is supported by the end of the vertical arm, and the linkage kit rotates relative to and is supported by the support shaft.

10. The automatic slide stroke adjustment device according to claim 1, It is characterized in that The driving mechanism includes a driving shaft, a main gear and the crankshaft, wherein the crankshaft has a first shaft section and a plug-in shaft section formed by shrinking from the end of the first shaft section; the main gear axis is coaxially fixedly connected to the plug-in shaft section; the end of the driving shaft is provided with a toothed structure for engaging with the main gear to drive the main gear to pull the crankshaft to rotate.

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