Feeding device for punch forming

Abstract

The utility model belongs to the technical field of feeding devices, and particularly relates to a feeding device for punch forming, which comprises a rack, the rack is provided with a material stacking frame, the material stacking frame is provided with a stock bin, the stock bin is used for accommodating workpieces, the rack is provided with a material lifting device, the material lifting device comprises a material lifting table and a material lifting driving part, and the material lifting table is in sliding connection relative to the material stacking frame. The material lifting driving piece drives the material lifting table to slide upwards so as to lift the workpieces in the stock bin; a limiting part is arranged above the stock bin, an elastic piece is arranged on the side, close to the workpiece, of the material lifting table, and when the workpiece is lifted to abut against the limiting part, the elastic force of the elastic piece is used for abutting against the workpiece to be attached to the limiting part; the rack is provided with a material pushing driving piece, the limiting part is arranged on the material pushing driving piece, the limiting part is in sliding connection relative to the rack, a material passing gap is formed between the limiting part and the upper end of the material stacking frame, the material pushing driving piece drives the limiting part to slide to send out a workpiece attached to the limiting part from the material passing gap, and the material lifting device is matched with the elastic piece to reduce the abutting force generated when the workpiece is sent out. The workpiece quality is improved.

Description

Technical Field

[0001] The technical solution relates to the technical field of feeding devices, and in particular to a feeding device for stamping and forming. Background Art

[0002] The feeding device is a device used to add materials to the production process. The device can be used as an automated device designed for stamping process to take materials out of the silo or hopper and accurately transport them to the designated position of the stamping die.

[0003] For example, Chinese patent CN116603903A discloses an automatic feeding stamping machine and stamping process for metal sheets. The automatic feeding stamping machine for metal sheets, through the setting of the push plate in the feeding bin, the limit groove, the trigger rod and the carrying groove in the movable plate, a plurality of strong springs are fixedly connected between the feeding bin and the push plate, and can push the top metal sheet into the carrying groove after releasing the limit of the limit rod, and after driving the metal sheet to move, the top plate at the rear end of the movable plate moves with it, and the top plate contacts the metal sheet, resets the metal sheet of the next layer, and moves the slider in the movable plate. At this time, the trigger rod is reset, and the limit rod is reset at the same time, and locked again to avoid taking away too many metal sheets at one time, so that one metal sheet is released at a time. The existing workpiece 100 adopts a sheet structure with a specific shape, and a plurality of workpieces 100 are stacked for use. The loading method of the workpiece 100 requires that the topmost workpiece 100 in the stacked workpiece 100 is pushed to the loading station.

[0004] The above-mentioned automatic loading punching machine and punching process of metal sheets, the existing automatic loading punching machine stacks the workpieces in the loading bin, and after the movable plate pushes out the top workpiece, the push plate pushes the workpiece upward to fill the position through a strong spring. The elastic force causes the workpieces to be pushed out and scratch each other, affecting the quality of the workpieces, which needs to be improved. Summary of the invention

[0005] In order to improve the problem that the elastic force pressing against the workpiece causes the workpieces to scratch each other when pushing the material, affecting the quality, this technical solution provides a feeding device for stamping.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A feeding device for stamping and forming, comprising a frame, the frame is provided with a stacking rack, the stacking rack has a material bin, the material bin is used to accommodate workpieces, the frame is provided with a lifting device, the lifting device comprises a lifting platform and a lifting driving member, the lifting platform is slidably connected with the stacking rack, and the lifting driving member drives the lifting platform to slide upwards to lift the workpieces in the material bin;

[0008] A limiting part is provided above the material bin, and an elastic part is provided on a side of the material lifting platform close to the workpiece. When the workpiece is lifted and abutted against the limiting part, the elastic force of the elastic part is used to press the workpiece tightly against the limiting part.

[0009] The frame is provided with a pushing drive member, the limiting part is arranged on the pushing drive member, the limiting part is slidably connected relative to the frame, a feeding gap is left between the limiting part and the upper end of the stacking rack, and the pushing drive member drives the limiting part to slide to send the workpiece attached to the limiting part out from the feeding gap.

[0010] Through the above technical scheme, when the feeding device for stamping and forming is used normally, the stacking rack on the frame has a silo, and the workpiece to be loaded is placed in the silo from the opening above the stacking rack, so that the workpiece is stacked vertically on the lifting table in the silo, and the position of the stacking rack is below the limiting part so that the workpiece is aligned with the limiting part, and the lifting drive drives the lifting table to slide upward to push the workpiece, so that the workpiece is lifted and close to the limiting part, based on the feeding gap left between the lower end surface of the limiting part and the upper end of the silo, the gap size of the feeding gap matches the workpiece to allow the workpiece to pass horizontally, and when the workpiece reaches the predetermined position, the pushing drive drives the limiting part to push the workpiece through the feeding gap in the direction of workpiece loading, and pushes a single workpiece out each time for loading, thereby realizing precise loading;

[0011] An elastic part is arranged between the lifting platform and the workpiece in the silo. The elastic force of the elastic part acts on the workpiece, so that the workpiece tends to be pressed against the limit part. The elastic part cooperates with the lifting device, and the lifting device controls the overall lifting of the workpiece for additional loading, and then adjusts it by elastic pressing of the elastic part to ensure that the workpiece at the top can fit on the limit part, avoiding excessive pressing pressure between the workpiece and other workpieces below when pushing the loading, thereby reducing the breakage rate of the workpiece, reducing production costs, and improving the quality of the workpiece.

[0012] Preferably, the limiting portion has two protrusions, and both of the two protrusions are provided with a material pushing groove, and the side of the material pushing groove facing the pushing direction passes through the side wall of the protrusion in a one-to-one correspondence;

[0013] The pushing groove has a pushing surface on one side opposite to the through end, and the pushing surface is used to abut against the side wall of the workpiece.

[0014] Through the above technical solution, the two protrusions both protrude from the side of the limiting portion close to the lifting direction of the workpiece, and the two protrusions are located one by one on the opposite sides of the limiting portion along the sliding direction, so that the workpiece can be abutted against the limiting portion by abutting against the two protrusions on both sides at the same time, and the workpiece can be stably positioned.

[0015] Since the workpiece is stained with oil, the oil on the workpiece surface causes the workpieces to adsorb to each other and cause material separation obstruction. The workpiece is deformed and adsorbed on the corresponding contact surface of the limiting part. The adsorption force also depends on the contact area between the workpiece and the limiting part. The limiting part is contacted with the workpiece through the protrusion to reduce the contact area with the workpiece, thereby weakening the adsorption force and improving the separation efficiency between the workpiece and the limiting part, thereby improving the feeding efficiency. At the same time, the reduction of the contact surface makes the leveling effect of the workpiece here better.

[0016] The push groove contacts the workpiece horizontally on one side of the protruding portion. The shape and size of the push groove match the workpiece. The two ends of the workpiece are embedded in the push grooves on both sides for positioning, thereby improving the positioning accuracy. When the limiting part pushes the workpiece, the push surface abuts against the side wall of the workpiece to provide a stable pushing force, thereby ensuring that the limiting part pushes the workpiece out smoothly through the push surface.

[0017] Preferably, the frame is provided with a gap plate, the length direction of the gap plate is arranged corresponding to the sliding direction of the limiting part, and the limiting part slides relative to the gap plate;

[0018] When the workpiece is sent out, the gap plate forms a guide for forming a gap between the limiting portion and the workpiece.

[0019] Through the above technical solution, in the process of the workpiece being pushed and fed, the length direction of the gap plate coincides with the workpiece pushing path. Based on the fact that the position of the gap plate is fixed relative to the limiting part, the workpiece is guided along the length direction of the gap plate. Since the gap plate has a certain inclination, the size of the gap between the workpiece and the limiting part gradually increases during the guiding process, and then the fitting area is gradually reduced, so that the workpiece can be more easily detached from the limiting part, further improving the feeding efficiency.

[0020] Preferably, the gap plate has a material guiding slope, and the material guiding slope is inclined downward in a direction away from the material pushing surface.

[0021] Through the above technical scheme, the lower end surface of the gap plate is connected with the material guide slope, the inclination direction of the material guide slope is the same as that of the gap plate, and the inclination angle of the material guide slope is greater than that of the gap plate, so that when the workpiece slides against the gap plate, the workpiece can transition from the gap plate to the material guide slope, and the material guide slope moves one end of the workpiece and guides it to break away from the gap plate, thereby breaking away from the workpiece and falling, further improving the loading efficiency.

[0022] Preferably, the frame is provided with a controller, and when the lifting platform presses the workpiece against the limiting portion, the controller controls the lifting platform to slide down and the sliding distance is d, where d is the thickness of the corresponding workpiece.

[0023] Through the above technical solution, when the lifting platform presses the workpiece against the limit part, a signal output will be generated, and the signal will be transmitted to the controller. After receiving the signal, the controller controls the lifting drive component, so that the lifting drive component drives the lifting platform to drop a specific distance d. The value of d is limited according to the thickness of the workpiece, so as to avoid the workpiece from being excessively pressed against the limit part, reduce the pressure wear between the workpieces, and further improve the quality of the workpiece.

[0024] Preferably, the frame is provided with a material-digging device, the material-digging device comprises a material-digging seat sliding on the frame, a material-digging part arranged on the material-digging seat, and a material-digging driving member, the sliding direction of the material-digging part is parallel to the sliding direction of the limiting part, and the material-digging driving member is used to drive the material-digging seat to slide;

[0025] The frame is provided with two guide seats, which are located one by one on the opposite sides of the material shifting seat along the sliding direction, and the guide seats on both sides cooperate to support the workpiece guide;

[0026] The frame is provided with a limit block, and the limit block is located between the two guide seats. The sliding movement of the material shifting seat enables the material shifting part to push the workpiece to abut against the limit block for limit.

[0027] Through the above technical scheme, the workpiece detaches from the limiting part and falls onto the guide seat. The guide seats on both sides provide support for the workpiece. The material-pickup driving member drives the material-pickup seat to slide and drives the material-pickup part. The material-pickup part pushes the workpiece to slide along the guide seat. The two guide seats cooperate to limit and guide the sliding direction of the workpiece, thereby reducing the displacement or tilt of the workpiece and improving the guiding stability. The material-pickup device pushes the workpiece until it stops after abutting against the limiting block. The material-pickup device returns to the initial position and is set according to the loading station corresponding to the position of the limiting block. At this time, the workpiece is loaded at the loading station.

[0028] Preferably, the frame is provided with a measuring piece, the measuring piece comprises a measuring end and a driving end, the measuring end is slidably connected relative to the frame, and the driving end is used to drive the measuring end to move to achieve workpiece thickness measurement.

[0029] Through the above technical solution, when the workpiece abuts against the limit block, the workpiece is at the loading station, the driving end drives the measuring end to slide toward the workpiece, and the measuring end passes through the workpiece, and the measuring piece performs accurate thickness detection on the workpiece. When the measuring end detects that the thickness of the workpiece to be loaded does not meet the set tolerance, it indicates that there are multiple workpieces stacked, workpieces are missing or the material thickness deviation is large. The entire device immediately stops running and issues an alarm to ensure that the number of workpieces loaded each time meets the requirements and are qualified workpieces, thereby ensuring normal operation.

[0030] Preferably, the frame is provided with a material changing device, the material changing device comprises a sliding seat and a material changing driving member, the sliding seat is slidably connected to the frame, and the material changing driving member is used to drive the sliding seat to slide;

[0031] There are two stacking racks, which are arranged on a sliding seat. The two stacking racks are distributed along the sliding direction of the sliding seat respectively, and the material changing device is used to drive the reciprocating movement of the stacking racks.

[0032] Through the above technical scheme, the material changing drive member drives the sliding seat to slide, and two stacking racks are installed on the sliding seat along its sliding direction. The sliding seat drives the two stacking racks to move back and forth. When one of the stacking racks is aligned with the limit part, the stacking rack participates in the loading operation. At this time, the other stacking rack replenishes the workpieces for advance preparation. The continuous supply of workpieces can be achieved by alternating the use of the two stacking racks, which reduces the time for workpiece replenishment and further improves the loading efficiency.

[0033] Preferably, two lifting devices are provided, and the two lifting devices are arranged in one-to-one correspondence with the two stacking bins. The frame is provided with a clearance groove, and the length direction of the clearance groove is arranged corresponding to the sliding direction of the sliding seat. The clearance groove is used for the lifting drive component to move to form a clearance space.

[0034] Through the above technical scheme, the two lifting devices are used in a one-to-one correspondence with the two stacking bins, avoiding repeated installation of the lifting device when different stacking bins are used, shortening the adjustment time of the equipment, and reducing the operating workload. The clearance groove of the frame allows the two lifting devices to pass through at the same time, and the length direction of the clearance groove matches the sliding direction of the sliding seat. The clearance groove provides a clearance space for the lifting device to move, thereby improving safety.

[0035] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0036] 1. This technical solution is to provide a lifting device on the frame, and the lifting driving member drives the lifting platform to lift the workpiece in the material bin, and the workpiece is against the limit part. The lifting platform is provided with an elastic member, and the elastic force of the elastic member acts on the workpiece so that the top workpiece is attached to the limit part, so as to avoid excessive pressure between the workpiece and other workpieces below when pushing the material, thereby reducing the breakage rate of the workpiece, reducing the production cost, and improving the quality of the workpiece;

[0037] 2. This technical solution provides a gap plate on the frame, and the workpiece can be pressed against the gap plate when being pushed, so that a gap is formed between the limit part and the workpiece. The gap plate has a material guide slope, and the material guide slope cooperates with the gap plate to make the workpiece not affected by the adsorption force of the oil on the surface of the workpiece and more easily detach from the limit part, thereby improving the feeding efficiency;

[0038] 3. This technical solution is provided with a controller through the frame. After the lifting table presses the workpiece tightly and flattens it against the limit part, the controller controls the lifting table to descend a distance d, where d is defined as the thickness of the corresponding workpiece to prevent the workpiece from being excessively pressed against the limit part, and then drives the limit part to send the workpiece out. This solution can send out the deformed workpiece in a temporarily flattened state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0040] Figure 2 For this embodiment Figure 1 A schematic diagram of a partial explosion from another perspective;

[0041] Figure 3 For this embodiment Figure 2 A partial enlarged schematic diagram;

[0042] Figure 4 For this embodiment Figure 1 Schematic diagram from another perspective;

[0043] Figure 5 It is a schematic diagram of the overall structure of the material shifting device in the embodiment;

[0044] Figure 6 A partial cross-sectional schematic diagram of an embodiment;

[0045] Figure 7 For this embodiment Figure 6 A partial enlarged schematic diagram;

[0046] Figure 8 It is a partial explosion schematic diagram of the material changing device in the embodiment;

[0047] Fig. 9 It is a schematic diagram of the overall structure of the workpiece in the background technology;

[0048] Fig.10 Schematic diagram of the overall structure of the elastic member in the embodiment.

[0049] Figure numerals: 1, frame; 2, material stacking rack; 3, material bin; 4, material lifting device; 41, material lifting platform; 42, material lifting drive member; 5, limiting part; 6, elastic member; 7, material pushing drive member; 8, material passing gap; 9, raised part; 10, material pushing groove; 11, material pushing surface; 12, gap plate; 13, material guide slope; 15, guide seat; 16, material discharging device; 161, material discharging seat; 162, material discharging part; 163, material discharging drive member; 17, limiting block; 18, measuring member; 181, measuring end; 182, driving end; 19, material changing device; 191, sliding seat; 192, material changing drive member; 20, clearance groove; 100, workpiece. DETAILED DESCRIPTION

[0050] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0051] Example:

[0052] See also Figure 1 A feeding device for stamping and forming includes a frame 1, a stacking rack 2 is provided on the frame 1, the stacking rack 2 has a silo 3, and an opening is formed on the upper end surface of the silo 3 corresponding to the stacking rack 2. Several workpieces 100 are placed in the silo 3 along the vertical direction through the opening.

[0053] See also Figure 2 The frame 1 is provided with a material changing device 19, and the material changing device 19 is arranged on the upper end surface of the frame 1. The material changing device 19 includes a sliding seat 191 and a material changing driving member 192. The material changing driving member 192 can be a motor or a cylinder. The sliding seat 191 is arranged on the output shaft of the material changing driving member 192, and the sliding seat 191 is slidably connected to the frame 1. In this embodiment, a guide rail and a guide seat are provided between the sliding seat 191 and the frame 1 to realize guided sliding. The material changing driving member 192 drives the sliding seat 191 to slide back and forth horizontally along the upper end surface of the frame 1. Two stacking racks 2 are provided, and the two stacking racks 2 are fixed at intervals on the upper end surface of the sliding seat 191, and the spacing direction corresponds to the sliding direction of the sliding seat 191. The sliding seat 191 drives the two stacking racks 2 to slide synchronously, and each sliding distance is limited to the center distance of the two stacking racks 2.

[0054] The frame 1 is provided with a lifting device 4, and there are two lifting devices 4. The two lifting devices 4 are arranged on the two stacking racks 2 in a one-to-one correspondence. Each lifting device 4 includes a lifting platform 41 and a lifting drive 42. The lifting drive 42 can adopt a servo electric cylinder. The lifting platform 41 is embedded in the silo 3 and is relatively located at the bottom end of the silo 3. The workpiece 100 is located in the silo 3 and stacked on the lifting platform 41. The lifting drive 42 is located below the lifting platform 41 and the output shaft is connected to the lifting platform 41. The lifting drive 42 drives the lifting platform 41 to slide vertically downward in the silo 3, so that the workpiece 100 is lifted or lowered, thereby realizing that the topmost workpiece 100 is sent out through the opening of the silo 3.

[0055] The frame 1 is vertically penetrated with a clearance groove 20, which is a long groove. The length direction of the clearance groove 20 corresponds to the sliding direction of the sliding seat 191, and the sliding range of the sliding seat 191 is limited to the clearance groove 20. The clearance groove 20 is adapted to the material lifting drive member 42, and the two material lifting drive members 42 both pass downward through the clearance groove 20. When the sliding seat 191 slides, the two material lifting drive members 42 move along the clearance groove 20, and the clearance groove 20 forms a clearance space to provide sliding clearance.

[0056] See also Figure 2 and Figure 3A limit portion 5 is provided above the silo 3. When the material changing drive member 192 drives the sliding seat 191 to slide, the two stacking racks 2 can be aligned with the limit portion 5, and the lower end surface of the limit portion 5 is opposite to the workpiece 100. The lifting drive member 42 pushes the workpiece 100 toward the limit portion 5. The limit portion 5 is slidably connected relative to the frame 1. The sliding direction of the limit portion 5 moves back and forth in a horizontal direction perpendicular to the sliding direction of the sliding seat 191. The loading station is on the sliding path of the limit portion 5. The limit portion 5 has two protrusions 9, and the two protrusions 9 both protrude from the lower end surface of the limit portion 5. The two protrusions 9 are located one by one on the opposite sides of the limit portion 5 along the sliding direction. When the limit portion 5 abuts against the workpiece 100, the protrusions 9 first contact with the workpiece 100 to provide abutment.

[0057] A pushing groove 10 is provided on the lower end surface of each protrusion 9, and each pushing groove 10 passes through the side wall of the protrusion 9 in a one-to-one manner on the side facing the pushing direction of the workpiece 100. Both sides of the workpiece 100 can be embedded in the pushing grooves 10 on both sides, and the workpiece 100 is fitted with the limiting portion 5 by fitting to the bottom of the pushing groove 10. Each pushing groove 10 has a pushing surface 11 on the side opposite to the through end. When the limiting portion 5 slides, the two pushing surfaces 11 are against the side wall of the workpiece 100 as support points, and the two pushing surfaces 11 simultaneously apply a pushing force to the workpiece 100, and the workpiece 100 is pushed toward the loading station.

[0058] See also Figure 6 and Figure 7 A material passing gap 8 is left between the limiting portion 5 and the upper end of the stacking rack 2 to prevent the limiting portion 5 from colliding with the stacking rack 2 during the sliding process. In this embodiment, the distance between the upper groove wall of the pushing groove 10 and the upper end surface of the stacking rack 2 is greater than the thickness of a workpiece 100 and less than the thickness of two workpieces 100 stacked together, so as to limit the number of workpieces 100 pushed each time to one. An elastic member 6 is provided on the side of the lifting platform 41 close to the workpiece 100, and the elastic member 6 abuts between the workpiece 100 and the lifting platform 41. When the workpiece 100 is lifted and abutted against the limiting portion 5, the elastic force of the elastic member 6 makes the workpiece 100 have a tendency to press and fit against the limiting portion 5, and the workpiece 100 is flattened on the limiting portion 5.

[0059] See also Fig.10 The elastic member 6 shown in this embodiment can be composed of a stack of several workpieces 100 with a certain curvature. Alternatively, the elastic member 6 can also be formed by arranging several return springs.

[0060] The frame 1 is provided with a controller. When the lifting platform 41 presses the workpiece 100 against the limit portion 5 and is in a flattened state, the controller is triggered and controls the lifting drive member 42 to run in reverse. In this embodiment, it is shown that the output shaft of the lifting drive member 42 has a thread, and the lifting drive member 42 and the lifting platform 41 slide through the pitch adjustment. By measuring the pitch size corresponding to the thickness of the workpiece 100, the rotation angle and rotation amplitude of the output shaft of the lifting drive member 42 are controlled to adjust the pitch to achieve the retraction of the lifting platform 41. The lifting platform 41 drives the workpiece 100 to descend and the distance is d, d is the thickness of the corresponding workpiece 100, and the pressure of the workpiece 100 against the limit portion 5 is reduced.

[0061] The frame 1 is provided with a push drive 7, which can be a motor or a cylinder. The push drive 7 is located above the limiting portion 5, and the limiting portion 5 is connected to the output shaft of the push drive 7 through a connecting member, so that the push drive 7 drives the limiting portion 5 to slide and send the fitted workpiece 100 out after passing through the material gap 8.

[0062] The frame 1 is provided with a gap plate 12, and the length direction of the gap plate 12 is set corresponding to the sliding direction of the limit part 5. One end of the gap plate 12 is fixed to the side of the push driving member 7 away from its output shaft, and the other end of the gap plate 12 extends to the bottom of the limit part 5 and contacts with the limit part 5. The gap plate 12 is located between the two protrusions 9, and the position of the gap plate 12 is fixed relative to the limit part 5. The gap plate 12 has a guide slope 13, which is located at one end of the gap plate 12 close to the unloading station. The gap plate 12 is inclined downward in the direction of the guide slope 13, and the workpiece 100 is guided and moved along the length direction of the gap plate 12. The guide slope 13 is an inclined surface, and the inclination direction is inclined downward in the direction away from the push surface 11. The inclination direction of the guide slope 13 is the same as that of the gap plate 12, and the inclination angle of the guide slope 13 is greater than that of the gap plate 12. Alternatively, the gap plate 12 can also have a guide surface, and the guide surface makes the lower end surface of the gap plate 12 inclined downward toward the unloading station.

[0063] During the process of the limiting part 5 pushing the workpiece 100, the gap plate 12 can abut against the workpiece 100. The gap plate 12 is located between the limiting part 5 and the workpiece 100 to form a gap. The workpiece 100 is guided downward along the gap plate 12 to gradually expand the gap, and then the contact area with the limiting part 5 gradually decreases, until the workpiece 100 moves through the material guide slope 13. Based on the large inclination angle of the material guide slope 13, the workpiece 100 is pushed and falls away from the limiting part 5.

[0064] See also Figure 4 and Figure 5The frame 1 is provided with a material dispensing device 16, which is closer to the loading station than the limiting portion 5. The material dispensing device 16 includes a material dispensing seat 161, a material dispensing portion 162 and a material dispensing driving member 163. The material dispensing driving member 163 can adopt a cylinder or a motor. The material dispensing seat 161 is arranged on the output shaft of the material dispensing driving member 163. The material dispensing driving member 163 and the material dispensing seat 161 slide through a slide rail and a slide seat guide. Two material dispensing portions 162 are provided, and the two material dispensing portions 162 are fixed to one end of the material dispensing seat 161 away from the frame 1.

[0065] The frame 1 is provided with two guide seats 15, and the two guide seats 15 are parallel to each other. The two guide seats 15 are located on opposite sides of the sliding direction of the material-dispensing seat 161, one end of the two guide seats 15 is located below the gap plate 12, so that the workpiece 100 can be supported by the upper end surfaces of the guide seats 15 on both sides when falling, and the other end extends corresponding to the position of the loading station, and the two material-dispensing parts 162 extend between the two guide seats 15, and the material-dispensing driving member 163 drives the material-dispensing seat 161 to slide and drive the material-dispensing part 162, and the material-dispensing part 162 pushes the workpiece 100 to slide, and the two guide seats 15 cooperate to guide the sliding trajectory of the workpiece 100, and the frame 1 is provided with a limit block 17, and the limit block 17 is located between the two guide seats 15, and the position corresponds to the loading station setting, so that the workpiece 100 stops after abutting against the limit block 17 in the sliding state. At this time, the workpiece 100 is at the loading station, and the workpiece 100 performs a loading operation at the loading station.

[0066] The frame 1 is provided with a measuring piece 18, which is located above the limit block 17. The measuring piece 18 shown in this embodiment can specifically adopt a displacement sensor. The measuring piece 18 includes a measuring end 181 and a driving end 182. The driving end 182 can adopt a cylinder or a motor. The measuring end 181 is arranged on the output shaft of the driving end 182 close to the limit block 17. When the limit block 17 abuts against the workpiece 100, the driving end 182 drives the measuring end 181 to slide downward, and the measuring end 181 abuts against the workpiece 100 and measures the thickness of the workpiece 100. When the thickness of the workpiece 100 at the loading station does not meet the set tolerance, the feedback signal causes the device to stop running immediately and emit a Warning, make corresponding adjustments to the workpiece 100 at the loading station. When the detection value is close to two or more workpiece thickness values, it means that there are two or more workpieces 100, and it is necessary to take out the excess workpieces 100 and retain one workpiece 100. Or, when the detection value is larger or smaller than the thickness of a workpiece, it means that the thickness deviation of the workpiece is large and does not meet the requirements of subsequent use. The workpiece 100 that does not meet the required thickness will be replaced. At the same time, when the detection value cannot be obtained or tends to zero, it means that there is no workpiece 100 at the loading station, so as to avoid the situation of no material at the loading station, the workpiece 100 in the silo 3 needs to be replenished in time.

[0067] The specific working process of this program is as follows:

[0068] The technical solution is as follows: a stacking rack 2 is provided on a frame 1, workpieces 100 are placed in a bin 3 of the stacking rack 2 and stacked on a lifting platform 41, a limiting portion 5 is provided above the bin 3, the workpiece 100 is aligned with the limiting portion 5, a lifting drive 42 drives the lifting platform 41 to slide upward and push the workpiece 100, the workpiece 100 is lifted and pressed against the limiting portion 5, a controller controls the lifting drive 42 to make the lifting platform 41 drive the workpiece 100 to descend, the workpiece 100 descends a distance d corresponding to the thickness of the workpiece 100, an elastic member 6 is provided between the lifting platform 41 and the workpiece 100 in the bin 3, the elastic force of the elastic member 6 acts on the workpiece 100 makes it tend to fit against the limiting portion 5, and a feeding gap 8 is left between the limiting portion 5 and the upper end of the hopper 3. The workpiece 100 is sent out through the feeding gap 8 for loading, thereby realizing precise loading. The elastic member 6 cooperates with the lifting device 4, and the lifting device 4 controls the overall lifting of the workpiece 100 and cooperates with the elastic member 6 in an elastic and tight fit manner to avoid excessive pressure between the workpiece 100 at the top and other workpieces 100 below, thereby ensuring that the workpiece 100 at the top can fit against the limiting portion 5, thereby reducing the breakage rate of the workpiece 100, reducing production costs, and improving the quality of the workpiece 100.

[0069] A feeding method includes the following steps: S1, a material changing driving member 192 drives a sliding seat 191 to slide, and the sliding seat 191 drives one of the stacking racks 2 to move out from under the limiting portion 5 to one side of the limiting portion 5, and a plurality of workpieces 100 are placed in the material bin 3 of the stacking rack 2, and the workpieces 100 are stacked on the lifting platform 41, and the material changing driving member 192 is controlled again to drive the sliding seat 191 to slide in the opposite direction, and the stacking rack 2 with the stacked workpieces 100 is driven to move to under the limiting portion 5, and at the same time, another stacking rack 2 is driven to move out from under the limiting portion 5 to the other side of the limiting portion 5, and a plurality of workpieces 100 are stacked in the material bin 3 of another stacking rack 2, and the material changing driving member 192 drives the sliding seat 191 to move back and forth to realize alternating replenishment of the workpiece 100 supply.

[0070] S2, start the lifting device 4, the lifting drive member 42 drives the lifting platform 41 to slide, the lifting platform 41 lifts the workpiece 100 upward, and embeds the top workpiece 100 into the pushing groove 10 of the raised parts 9 on both sides. At this time, the workpiece 100 is pressed against the limiting part 5 and is in a flattened state, the controller controls the lifting drive member 42, the lifting drive member 42 drives the lifting platform 41 to slide in the opposite direction, and the lifting platform 41 retracts the workpiece 100 downward, the lifting drive member 42 adjusts the corresponding pitch amount between the lifting platform 41 according to the measured thickness d of the corresponding workpiece 100, so that the sliding distance of the workpiece 100 retreating is d, the elastic force of the elastic member 6 is applied upward to the workpiece 100, and the top workpiece 100 is attached to the bottom of the pushing groove 10, so that the contact surface of the workpiece 100 and the limiting part 5 is in a light pressure fitting state.

[0071] S3, start the push drive 7, the push drive 7 drives the limit part 5 to slide forward toward the loading station, the push surface 11 abuts against the side wall of the workpiece 100 abutting against the limit part 5 to apply thrust, the workpiece 100 is sent out of the bin 3 through the material gap 8, the workpiece 100 abuts against the gap plate 12, and the abutment area between the workpiece 100 and the limit part 5 is reduced along the gap plate 12, the workpiece 100 passes through the guide slope 13 and completely separates from the limit part 5, the workpiece 100 falls toward the guide seat 15 and abuts against the guide seats 15 on both sides, the material dispensing device 16 is started, and the material dispensing drive 163 drives the material dispensing part 162 to slide and push the workpiece 1 00, the workpiece 100 continues to move along the guide seat 15 toward the loading station until the workpiece 100 abuts against the limit block 17, the material-dispensing driving member 163 stops and retracts the material-dispensing portion 162 to the initial position. At this time, the workpiece 100 is already at the loading station, the measuring member 18 is started, and the driving end 182 drives the measuring end 181 to approach and abut against the workpiece 100. The measuring end 181 detects the thickness of the workpiece 100. When the thickness of the workpiece 100 is detected to be the thickness of a workpiece 100, the workpiece 100 is loaded normally. When the thickness of the workpiece 100 is detected to be inconsistent with the set thickness tolerance, the device stops running and issues an alarm.

[0072] S4, the pushing driving member 7 is started, and the pushing driving member 7 drives the limiting portion 5 to slide backward, and the limiting portion 5 retreats to the top of the silo 3, preparing for the next pushing operation.

[0073] S5, repeat the above steps of S1, S2, S3 and S4 to realize cyclic loading.

[0074] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description only illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A feeding device for stamping, comprising a frame (1), characterized in that: The frame (1) is provided with a material stacking rack (2), the material stacking rack (2) has a material bin (3), the material bin (3) is used to accommodate workpieces (100), the frame (1) is provided with a material lifting device (4), the material lifting device (4) comprises a material lifting platform (41) and a material lifting driving member (42), the material lifting platform (41) is slidably connected relative to the material stacking rack (2), and the material lifting driving member (42) drives the material lifting platform (41) to slide upwards to lift the workpiece (100) in the material bin (3); A limiting portion (5) is provided above the material bin (3), and an elastic member (6) is provided on a side of the material lifting platform (41) close to the workpiece (100). When the workpiece (100) is lifted and pressed against the limiting portion (5), the elastic force of the elastic member (6) is used to press the workpiece (100) against the limiting portion (5); The frame (1) is provided with a push drive member (7), the limiting portion (5) is arranged on the push drive member (7), the limiting portion (5) is slidably connected relative to the frame (1), a material passing gap (8) is left between the limiting portion (5) and the upper end of the stacking rack (2), and the push drive member (7) drives the limiting portion (5) to slide so as to send the workpiece (100) affixed to the limiting portion (5) out of the material passing gap (8).

2. The punching feeding device according to claim 1, characterized in that: The limiting portion (5) has two protrusions (9), and both of the two protrusions (9) are provided with a material pushing groove (10), and the material pushing groove (10) passes through the side wall of the protrusion (9) in a one-to-one correspondence on the side facing the pushing direction; The pushing groove (10) has a pushing surface (11) on one side opposite to the through end, and the pushing surface (11) is used to abut against the side wall of the workpiece (100).

3. The punching feeding device according to claim 1, characterized in that: The frame (1) is provided with a gap plate (12), the length direction of the gap plate (12) is arranged corresponding to the sliding direction of the limiting portion (5), and the limiting portion (5) slides relative to the gap plate (12); When the workpiece (100) is sent out, the gap plate (12) forms a guide for forming a gap between the limiting portion (5) and the workpiece (100).

4. The punching feeding device according to claim 3, characterized in that: The gap plate (12) has a material guiding inclined surface (13), and the material guiding inclined surface (13) is inclined downward in a direction away from the material pushing surface (11).

5. The punching feeding device according to claim 1, characterized in that: The frame (1) is provided with a controller. When the lifting platform (41) presses the workpiece (100) against the limiting portion (5), the controller controls the lifting platform (41) to slide downward and the sliding distance is d, where d is the thickness of the corresponding workpiece (100).

6. The punching feeding device according to claim 1, characterized in that: The frame (1) is provided with a material shifting device (16), the material shifting device (16) comprising a material shifting seat (161) sliding on the frame (1), a material shifting portion (162) arranged on the material shifting seat (161), and a material shifting driving member (163), the sliding direction of the material shifting portion (162) is parallel to the sliding direction of the limiting portion (5), and the material shifting driving member (163) is used to drive the material shifting seat (161) to slide; The frame (1) is provided with two guide seats (15), and the two guide seats (15) are located one by one on opposite sides of the material shifting seat (161) along the sliding direction, and the guide seats (15) on both sides cooperate to support the workpiece (100) for guidance; The frame (1) is provided with a limit block (17), and the limit block (17) is located between the two guide seats (15). The material shifting seat (161) slides so that the material shifting portion (162) pushes the workpiece (100) to abut against the limit block (17) for limit.

7. The punching feeding device according to claim 1, characterized in that: The frame (1) is provided with a measuring piece (18), the measuring piece (18) comprising a measuring end (181) and a driving end (182), the measuring end (181) being slidably connected relative to the frame (1), and the driving end (182) being used to drive the measuring end (181) to move to achieve thickness measurement of a workpiece (100).

8. The punching feeding device according to claim 1, characterized in that: The frame (1) is provided with a material changing device (19), the material changing device (19) comprising a sliding seat (191) and a material changing driving member (192), the sliding seat (191) is slidably connected to the frame (1), and the material changing driving member (192) is used to drive the sliding seat (191) to slide; Two stacking racks (2) are provided, and the two stacking racks (2) are arranged on a sliding seat (191). The two stacking racks (2) are distributed along the sliding direction of the sliding seat (191), and the material changing device (19) is used to drive the reciprocating movement of the stacking racks (2).

9. The punching feeding device according to claim 8, characterized in that: The material lifting devices (4) are provided with two, and the two material lifting devices (4) are arranged in one-to-one correspondence with the two material stacking bins (3). The frame (1) is provided with a clearance groove (20), and the length direction of the clearance groove (20) is arranged corresponding to the sliding direction of the sliding seat (191). The clearance groove (20) is used for the material lifting driving member (42) to move to form a clearance space.

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