Fine blanking side force dimple forming structure and control method thereof

Abstract

The application discloses a kind of fine blanking side force concave point forming structure and its control method, including product material belt and support frame, the right side of the support frame is equipped with fine blanking die, the machining position for processing product material belt is equipped in the fine blanking die, the support frame is equipped with conveyor belt, the right side of the conveyor belt is equipped with the pressure roller that can be adjusted to product material belt, the product material belt is input into machining position by conveyor belt and pressure roller.The application overcomes the problem of low processing quality of traditional concave point processing equipment in the prior art.The application has the advantages of simple structure, low processing difficulty, higher stability in processing process and high product quality after processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of material belt processing equipment, more particularly, to a fine blanking edge force dimple forming structure and a control method thereof. BACKGROUND

[0002] The brake back plate dimple structure is one of the main brake back plate structures on the market. The function of this structure is to fix and rivet the sound-absorbing sheet to the steel back simultaneously. Since this structure is an important structure for riveting the sound-absorbing sheet, the following points need to be achieved on the structure:

[0003] The front profiled structure can match the bowl-shaped structure of the sound-absorbing sheet to position the sound-absorbing sheet. The diameter and height of the front convex point need to meet the tolerance to ensure that the diameter of the sound-absorbing sheet after riveting meets the requirements of the assembly drawing. The depth of the rear hole needs to be as shallow as possible to ensure that the wall thickness between the front convex point of the dimple and the top of the rear hole is at least 2mm thick.

[0004] At present, a fine distillation tube dimple forming die is disclosed on the Chinese patent network with the publication number CN217964370U, which belongs to the technical field of refrigerators and includes a base, a support plate connected to the top of the base, a pressing plate provided above the support plate, and a half-circle groove connecting the top of the support plate and the bottom of the pressing plate to the outer wall of the fine distillation tube for contact. Elastic connecting pieces are symmetrically provided on the top of the pressing plate. An upper extrusion assembly is provided on the top of the elastic connecting pieces. Side extrusion assemblies are connected to the ends of the upper extrusion assembly. A lower extrusion assembly is connected to the bottom of the base, and the lower extrusion assembly is connected to the side extrusion assemblies. The upper extrusion assembly, the lower extrusion assembly, and the side extrusion assembly are all connected to the punch rod at equal intervals. In the above manner, the outer wall of the fine distillation tube is subjected to multi-point synchronous dimple punching, and the synchronous dimple punching operation is simple and conducive to rapid punching processing.

[0005] The fine distillation tube dimple forming die in the above patent has the advantage of fast punching speed, but it does not use a precision machining device for the workpiece, resulting in low machining quality. SUMMARY

[0006] In order to overcome the problem of low machining quality of traditional dimple machining equipment in the prior art, the present application provides a fine blanking edge force dimple forming structure and a control method thereof with high machining quality.

[0007] The fine blanking edge force dimple forming structure and the control method thereof of the present application include a product material belt and a support frame. The right side of the support frame is provided with a fine blanking die. The fine blanking die is provided with a machining position for machining the product material belt. The support frame is provided with a conveying belt. The right side of the conveying belt is provided with a pressure roller for fine adjustment of the product material belt. The product material belt is input into the machining position through the conveying belt and the pressure roller.

[0008] As preferred, the right side of the conveying belt is provided with a guide frame, the lower end of the guide frame is provided with a floating plate, the support frame is provided with a driving cylinder, the upper end of the floating plate is provided with a sliding cylinder used in cooperation with the driving cylinder to fine-tune the product belt.

[0009] As preferred, the support frame comprises a bottom plate below the floating plate, the left and right ends of the bottom plate are respectively welded with support plates, the driving cylinder is vertically installed on the upper end of the bottom plate, and the upper end of the piston rod of the driving cylinder is connected with the center of the bottom surface of the floating plate through a set screw, and the sliding cylinder is transversely installed on the floating plate, and the right end of the piston rod of the sliding cylinder is connected with the bottom center of the left end surface of the guide frame through a set screw.

[0010] As preferred, the upper end of the bottom plate is respectively provided with a "T"-shaped guide rod for limiting and supporting the floating plate at four corners, a linear bearing is respectively sleeved on each guide rod, and the four linear bearings are respectively embedded in the four corners of the floating plate, and the waist part of the linear bearing is connected with the bottom surface of the floating plate through a set screw.

[0011] As preferred, the front and rear sides of the floating plate on the right side of the sliding cylinder are respectively paved with slide rails, the guide frame is in the shape of a "mouth" character, the compression roller is transversely arranged on the guide frame, the guide roller is arranged below the guide frame, the guide frame is welded with a sliding block at the bottom, and the bottom of the sliding block is respectively provided with a sliding groove in sliding connection with the slide rails.

[0012] As preferred, the front and rear sides of the floating plate are respectively welded with mounting plates for mounting the conveying belt, the left end of the conveying belt is provided with a driving roller, a plurality of driven rollers are arranged on the left side of the driving roller in cooperation with the driving roller, a driving shaft for mounting the driving roller is inserted between the two mounting plates, the driving roller is slidably sleeved on the driving shaft, a plurality of driven shafts for cooperation with the driven rollers are inserted between the two mounting plates on the right side of the driving shaft, the driven rollers are slidably sleeved on the driven shafts, and a driven sprocket for driving the driving shaft is sleeved on the driving shaft at the front end of the driving roller.

[0013] As preferred, the lower end of the floating plate is provided with a driving motor, the output shaft of the driving motor is sleeved with a driving sprocket used in cooperation with a driven sprocket, the driving sprocket and the driven sprocket are connected through a chain transmission, the opposite faces of the two mounting plates are respectively embedded with driving bearings used in cooperation with driving shafts, the front end of the driving shaft is inserted into the center of the driving bearing on the mounting plate on the front side, the rear end of the driving shaft is inserted into the center of the driving bearing on the mounting plate on the rear side, the opposite faces of the two mounting plates on the right side of the driving bearing are respectively embedded with driven bearings used in cooperation with driven shafts, the front end of the driven shaft is inserted into the center of the driven bearing on the mounting plate on the front side, the rear end of the driven shaft is inserted into the center of the driven bearing on the mounting plate on the rear side, and the upper end of the driving motor is connected with the lower end face of the floating plate through a screw.

[0014] As preferred, the upper end of the fine blanking die is provided with an upper die ejector rod used for conducting the blanking force required when a product tape is formed, the lower end of the upper die ejector rod is provided with an upper die assembly used in cooperation with the upper die ejector rod to process the back of the product tape, the lower side of the upper die assembly is provided with a lower die assembly used in cooperation with the upper die assembly to process the front of the product tape, the upper die assembly comprises a punching assembly used for stamping and forming the back of the product tape, and the lower die assembly comprises a dimple forming sleeve used in cooperation with the punching assembly to stamp and form the front of the product tape.

[0015] As preferred, the upper die assembly comprises a stripper plate for mounting the punching assembly, the upper end of the stripper plate is provided with a stripper plate backing plate, the lower die assembly comprises a concave die plate for mounting the concave point forming sleeve, the left end of the stripper plate is embedded with a first infrared sensor, the left end of the concave die plate is embedded with a second infrared sensor, the first infrared sensor and the second infrared sensor are symmetrically distributed in up and down, the right end of the stripper plate is embedded with a third infrared sensor, the right end of the concave die plate is embedded with a fourth infrared sensor, the third infrared sensor and the fourth infrared sensor are symmetrically distributed in up and down, the lower end of the concave die plate is provided with a concave die backing plate, the stripper plate and the concave die plate are left with a die cavity for inputting the product tape to be processed, the punching assembly comprises a punch needle mounted on the stripper plate and used for processing the back of the product tape, the periphery of the punch needle is provided with a punch needle fixing sleeve for limiting the punch needle, the center of the stripper plate is provided with a nested through hole longitudinally penetrating through the stripper plate and used for embedding the punch needle fixing sleeve, the lower end of the stripper plate backing plate located directly above the nested through hole is provided with an upper embedding groove for embedding the upper end of the punch needle, the punch needle fixing sleeve is in a cylindrical shape, the lower end of the punch needle fixing sleeve is provided with an arc-shaped processing groove matched with the punch needle, the center of the upper end surface of the punch needle fixing sleeve and the center of the groove bottom of the arc-shaped processing groove are provided with a lower embedding through hole for inserting the lower end of the punch needle, the upper end surface of the punch needle fixing sleeve and the upper end surface of the stripper plate respectively abut the lower end surface of the stripper plate backing plate, the longitudinal section of the punch needle is in a "T" shape, the upper end of the punch needle is embedded in the upper embedding groove, the lower end of the punch needle is inserted into the lower embedding through hole, and the length of the punch needle is longer than the length of the punch needle fixing sleeve, the center of the concave die plate is provided with a concave point through hole longitudinally penetrating through the concave die plate and used for embedding the concave point forming sleeve, the upper end of the concave point forming sleeve is in a stepped shape in longitudinal section, the lower end surface of the concave point forming sleeve is in an inverted "T" shape in longitudinal section, the lower end of the concave point forming sleeve is embedded in the concave point through hole, the lower end surface of the concave point forming sleeve and the lower end surface of the concave die plate respectively abut the upper end surface of the concave die backing plate, the upper end of the concave point forming sleeve is located above the upper end surface of the concave die plate, the upper end of the concave point forming sleeve is provided with a lower concave through hole longitudinally penetrating through the concave point forming sleeve and used for processing the front of the product tape, the upper end of the concave point forming sleeve located below the lower concave through hole is provided with a step matched with the lower concave through hole and used for processing the front of the product tape.

[0016] As preferred,

[0017] The control method of the application:

[0018] 1) During operation, first, the application is installed in the required stamping die, that is, the upper die assembly is installed in the upper die of the stamping die, and the lower die assembly is installed in the lower die of the stamping die, and then the upper and lower stamping dies are respectively installed in the fine blanking machine;

[0019] 2) After starting the drive motor, the drive motor drives the main roller through the chain to drive the conveyor belt, and then the product strip is conveyed to the mold cavity between the discharge plate and the die plate, and the upper end of the product strip is the back surface during processing, and the lower end of the product strip is the front surface;

[0020] 3) At this time, the first infrared sensor detects the distance h1 between the first infrared sensor and the back surface of the product strip, and the second infrared sensor detects the distance h2 between the second infrared sensor and the front surface of the product strip;

[0021] 4) When h1 is greater than h2, the conveyor belt is paused, and then the drive cylinder is started to make the piston rod of the drive cylinder extend upward to drive the floating plate to move upward, and the floating plate drives the product strip to move until h1 is equal to h2 during the upward movement of the floating plate;

[0022] 5) When h1 is less than h2, the conveyor belt is paused, and then the drive cylinder is started to make the piston rod of the drive cylinder retract downward to drive the floating plate to move downward, and the floating plate drives the product strip to move until h1 is equal to h2 during the downward movement of the floating plate;

[0023] 6) During the upward and downward movement of the floating plate, the product strip will vibrate due to inertia, and when the vibration stops, the product strip in the mold cavity will tilt upward or downward due to the deformation ability of the metal product strip;

[0024] 7) At this time, the third infrared sensor detects the distance h3 between the third infrared sensor and the back surface of the product strip, and the fourth infrared sensor detects the distance h4 between the fourth infrared sensor and the front surface of the product strip;

[0025] 8) When h3 is greater than h4, the product strip in the mold cavity tilts downward at this time, and the sliding cylinder is started at this time to make the piston rod of the sliding cylinder extend to the right to drive the guide frame to move to the right, so that the fulcrum between the product strip and the guide frame is offset to the right, and under the action of the rigidity of the product strip itself, h3 will decrease and tend to h4, and when the absolute value of the difference between h3 and h4 is within the preset error range, the product strip can be punched;

[0026] 9) When h3 is less than h4, the product strip in the mold cavity tilts upward at this time, and the sliding cylinder is started at this time to make the piston rod of the sliding cylinder retract to the left to drive the guide frame to move to the left, so that the fulcrum between the product strip and the guide frame is offset to the left, and under the action of the gravity of the product strip itself, h3 will increase and tend to h4, and when the absolute value of the difference between h3 and h4 is within the preset error range, the product strip can be punched;

[0027] 10) When h1 is equal to h2 and the absolute value of the difference between h3 and h4 is within the preset error range, the stamping die with the upper and lower die assemblies is closed until the product strip back surface is attached to the stripper plate and the product strip front surface is attached to the concave die plate, at which time the stamping die reaches the closing point, and then the fine blanking machine is started to prepare to press the product strip;

[0028] 11) When pressing, the hydraulic machine of the fine blanking machine located directly above the stamping die presses the upper die of the stamping die, and when the upper die is pressed, the upper die ejector rod transmits the blanking force generated by the fine blanking machine to the stripper plate backing plate and the stripper plate, at which time the punch gradually pressed into the product strip, which is embedded in the punch fixed sleeve, processes the back surface of the product strip, and gradually presses out the required concave point back surface structure;

[0029] 12) During the pressing process, the concave point forming sleeve embedded in the concave die plate is gradually pressed into the strip to process the front surface of the product strip, and gradually press out the concave point front surface structure, until the upper die of the stamping die is at the upper dead center, at which time the concave point structures on the front and back surfaces of the product strip are fully processed and formed, at which time the hydraulic machine of the fine blanking machine no longer presses the upper die ejector rod, and the pressure is completely released until the pressure is 0, and then the piston rod of the hydraulic machine of the fine blanking machine starts to return upward;

[0030] 13) When stripping, the concave point forming sleeve embedded in the concave die plate and the concave die backing plate are lowered to separate from the product strip, and when the product strip is separated by 5mm, the upper die ejector rod of the fine blanking machine is again pressed to drive the stripper plate backing plate and the stripper plate to push the product strip downward to separate the product strip from the punch embedded in the punch fixed sleeve and the stripper plate;

[0031] 14) At this point, the processing of the product strip is completed.

[0032] In the concave point fine blanking edge force forming die structure, the upper die ejector rod, the stripper plate backing plate, the stripper plate, the concave die plate, and the concave die backing plate are all used in the structure of the fine blanking body. The core components of this structure are the forming components of the concave point front and back surface structure: the concave point forming sleeve, the punch fixed sleeve, and the punch.

[0033] The concave point forming sleeve can be machined from die steel of type DC53 and vacuum heat treated to 58-60HRC, and cryogenically treated more than twice. The gap with the concave die plate mounting hole is 0.005 on one side, and the structure at A needs to be matched with the size of the designed product concave point front surface structure. The step height needs to be less than 0.02-0.05mm of the depth of the die plate counterbore, and the top of the straight section of the concave point forming sleeve needs to be slightly higher than the working surface of the concave die plate by 0.01-0.02mm after assembly. The middle part must use a through-hole structure, and the hole diameter is matched with the point diameter size of the concave point, and the same hole structure is beneficial to the material flow of the concave point in work, and better controls the height size of the convex point.

[0034] The punch pin fixing sleeve can be machined by using die steel of model Cr12MoV and vacuum heat treated to 55-58HRC.

[0035] The gap of the discharge plate mounting hole is 0.005 on one side, the middle diameter 5mm hole is the punch pin mounting hole, the single side gap is 0.005-0.010mm; the total height is slightly higher than the height of the discharge plate by 0.01-0.02. The arc-shaped groove structure is not allowed to be chamfered at the edge of the contact surface with the material belt, and the remaining part is sharp edge chamfered C0.3.

[0036] The punch pin uses high-speed die steel of model SKH51, vacuum heat treated to 60-62HRC, and cryogenic treated more than twice. The single side gap of the punch pin and the punch pin fixing sleeve cooperation gap is 0.005-0.010mm; the initial design height of the punch pin is 51.5+0.10 / +0.08, which is slightly higher than the height of 51.5 calculated in the design, and the actual height of the punch pin needs to be determined after the adaptation in the die. The size P after determination is the actual height size of the subsequent spare parts procurement, and the procurement is carried out according to the height value of P+0.02.

[0037] The present application has the following beneficial effects: simple structure, low processing difficulty, higher stable processing process, and high product quality after processing. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a structural schematic diagram of the present application. Figure 1 Figure 1 is a structural schematic diagram of the present application.

[0039] Figure 1 is a structural schematic diagram of the present application. Figure 2 Figure 1 is a structural schematic diagram of the present application.

[0040] Figure 1 is a structural schematic diagram of the present application. Figure 3 Figure 1 is a structural schematic diagram of the present application.

[0041] Figure 1 is a structural schematic diagram of the present application. Figure 4 Figure 1 is a structural schematic diagram of the present application.

[0042] Figure 1 is a structural schematic diagram of the present application. Figure 5 Figure 1 is a structural schematic diagram of the present application.

[0043] Figure 1 is a structural schematic diagram of the present application. Figure 6 Figure 1 is a structural schematic diagram of the present application.

[0044] Figure 1 is a structural schematic diagram of the present application. Figure 7 Figure 1 is a structural schematic diagram of the present application.

[0045] Upper die ejector pin 1, stripper plate backing plate 2, stripper plate 3, die plate 5, die backing plate 6, concave point forming sleeve 7, punch needle fixing sleeve 10, punch needle 11, driving roller 12, driven roller 13, mounting plate 14, bottom plate 15, support plate 16, floating plate 17, driving motor 18, air cylinder 19, linear bearing 20, connecting plate 21, sliding air cylinder 22, conveying belt 23, guide frame 24, guide roller 25, adjusting pressure roller 26, product material belt 27, support frame 28, fine blanking die 29, processing position 30, guide rod 31, sliding rail 32, sliding block 33, sliding slot 34, driving shaft 35, driven shaft 36, driven sprocket 37, driving sprocket 38, No. 1 infrared sensor 39, No. 2 infrared sensor 40, No. 3 infrared sensor 41, No. 4 infrared sensor 42. DETAILED DESCRIPTION

[0046] The technical solutions of the present application will be further specifically described below by examples in combination with the drawings.

[0047] The example is further explained according to the drawings Figure 1 , the drawings Figure 2 , the drawings Figure 3 , the drawings Figure 4 , the drawings Figure 5 , the drawings Figure 6 and the drawings Figure 7 A fine blanking edge force concave point forming structure and its control method of the example are further explained, which includes a product material belt 27 and a support frame 28, the right side of the support frame 28 is provided with a fine blanking die 29, the fine blanking die 29 is provided with a processing position 30 for processing the product material belt 27, the support frame 28 is provided with a conveying belt 23, the right side of the conveying belt 23 is provided with a pressure roller 26 for fine adjustment of the product material belt 27, and the product material belt 27 is input into the processing position 30 through the conveying belt 23 and the pressure roller 26.

[0048] The right side of the conveying belt 23 is provided with a guide frame 24, the lower end of the guide frame 24 is provided with a floating plate 17, the support frame 28 is provided with a driving air cylinder 19, and the upper end of the floating plate 17 is provided with a sliding air cylinder 22 for fine adjustment of the product material belt 27 in cooperation with the driving air cylinder 19.

[0049] The support frame 28 includes a bottom plate 15 below the floating plate 17, the left and right ends of the bottom plate are respectively welded with support plates 16, the driving air cylinder 19 is vertically installed on the upper end of the bottom plate 15, the upper end of the piston rod of the driving air cylinder 19 is connected with the center of the bottom surface of the floating plate 17 through a set screw, and the sliding air cylinder 22 is transversely installed on the floating plate 17, the right end of the piston rod of the sliding air cylinder 22 is connected with the bottom center of the left end surface of the guide frame 24 through a set screw.

[0050] The four corners of the upper end of the bottom plate 15 are respectively provided with a "T" shaped guide rod 31 for limiting and supporting the floating plate 17, each guide rod 31 is sleeved with a linear bearing 20, and the four linear bearings 20 are respectively embedded in the four corners of the floating plate 17. The waist of the linear bearing 20 is connected with the bottom surface of the floating plate 17 by a screw.

[0051] The front and rear sides of the floating plate 17 on the right side of the sliding cylinder 22 are respectively paved with slide rails 32. The guide frame 24 is in the shape of a "mouth" character. The compression roller 26 is horizontally arranged on the guide frame 24. The guide roller 25 is arranged below the compression roller 26. The bottom of the guide frame 24 is welded with a sliding block 33. The bottom of the sliding block 33 is provided with a sliding groove 34 on the front and rear sides, which is slidably connected with the slide rail 32.

[0052] The front and rear sides of the floating plate 17 are respectively welded with mounting plates 14 for mounting the conveying belt 23. The left end of the conveying belt is provided with a driving roller 12. A plurality of driven rollers 13 are arranged on the conveying belt 23 on the left side of the driving roller 12, which are used in cooperation with the driving roller 12. The driving shaft 35 for mounting the driving roller 12 is inserted between the two mounting plates 14. The driving roller 12 is slidably sleeved on the driving shaft 35. A plurality of driven shafts 36 are inserted between the two mounting plates 14 on the right side of the driving shaft 35, which are used in cooperation with the driven rollers 13. The driven rollers 13 are slidably sleeved on the driven shafts 36. The driven sprocket 37 for driving the driving shaft 35 is sleeved on the driving shaft 35 at the front end of the driving roller 12.

[0053] The lower end of the floating plate 17 is provided with a driving motor 18. The output shaft of the driving motor 18 is sleeved with a driving sprocket 38 which is used in cooperation with the driven sprocket 37. The driving sprocket 38 and the driven sprocket 37 are connected by a chain. The driving bearing for cooperating with the driving shaft 35 is embedded on the opposite surfaces of the two mounting plates 14. The front end of the driving shaft 35 is inserted into the center of the driving bearing on the mounting plate 14 on the front side. The rear end of the driving shaft 35 is inserted into the center of the driving bearing on the mounting plate 14 on the rear side. The driven bearing for cooperating with the driven shaft 36 is embedded on the opposite surfaces of the two mounting plates 14 on the right side of the driving bearing. The front end of the driven shaft 36 is inserted into the center of the driven bearing on the mounting plate 14 on the front side. The rear end of the driven shaft 36 is inserted into the center of the driven bearing on the mounting plate 14 on the rear side. The upper end of the driving motor 18 is connected with the lower end surface of the floating plate 17 by a screw.

[0054] The upper end of the fine blanking die 29 is provided with an upper die ejector pin 1 for conducting the blank holder force required when the product strip 27 is formed, the lower end of the upper die ejector pin 1 is provided with an upper die assembly for cooperating with the upper die ejector pin 1 to process the back surface of the product strip 27, the lower end of the upper die assembly is provided with a lower die assembly for cooperating with the upper die assembly to process the front surface of the product strip 27, the upper die assembly comprises a punching assembly for stamping and forming the back surface of the product strip 27, and the lower die assembly comprises a dimple forming sleeve 7 for cooperating with the punching assembly to stamp and form the front surface of the product strip 27.

[0055] The upper die assembly includes a stripper plate 3 for mounting a punching assembly, the upper end of the stripper plate 3 is provided with a stripper plate backing plate 2, the lower die assembly includes a concave die plate 5 for mounting a concave point forming sleeve 7, the left end of the stripper plate 3 is embedded with a first infrared sensor 39, the left end of the concave die plate 5 is embedded with a second infrared sensor 40, the first infrared sensor 39 and the second infrared sensor 40 are symmetrically distributed above and below, the right end of the stripper plate 3 is embedded with a third infrared sensor 41, the right end of the concave die plate 5 is embedded with a fourth infrared sensor 42, the third infrared sensor 41 and the fourth infrared sensor 42 are symmetrically distributed above and below, the lower end of the concave die plate 5 is provided with a concave die backing plate 6, the stripper plate 3 and the concave die plate 5 are left with a die cavity for inputting the product tape 27 to be processed, the punching assembly includes a punch pin 11 mounted on the stripper plate 3 and used for processing the back of the product tape 27, the periphery of the punch pin 11 is provided with a punch pin fixing sleeve 10 for limiting the punch pin 11, the center of the stripper plate 3 is provided with a nested through hole which penetrates the stripper plate 3 longitudinally and is used for embedding the punch pin fixing sleeve 10, the lower end of the stripper plate backing plate 2 located directly above the nested through hole is provided with an upper embedding groove for embedding the upper end of the punch pin 11, the punch pin fixing sleeve 10 is cylindrical, the lower end of the punch pin fixing sleeve 10 is provided with an arc-shaped processing groove for cooperating with the punch pin 11, the center of the upper end face of the punch pin fixing sleeve 10 and the center of the bottom of the arc-shaped processing groove are provided with a lower embedding through hole for inserting the lower end of the punch pin 11, the upper end face of the punch pin fixing sleeve 10 and the upper end face of the stripper plate 3 respectively abut the lower end face of the stripper plate backing plate 2, the longitudinal section of the punch pin 11 is in the shape of "T", the upper end of the punch pin 11 is embedded in the upper embedding groove, the lower end of the punch pin 11 is inserted into the lower embedding through hole, and the length of the punch pin 11 is longer than the length of the punch pin fixing sleeve 10, the center of the concave die plate 5 is provided with a concave point through hole which penetrates the concave die plate 5 longitudinally and is used for embedding the concave point forming sleeve 7, the upper end of the concave point forming sleeve 7 is in the shape of a ladder in longitudinal section, the lower end face of the concave point forming sleeve 7 is in the shape of an inverted "T" in longitudinal section, the lower end of the concave point forming sleeve 7 is embedded in the concave point through hole, the lower end face of the concave point forming sleeve 7 and the lower end face of the concave die plate 5 respectively abut the upper end face of the concave die backing plate 6, the upper end of the concave point forming sleeve 7 is located above the upper end face of the concave die plate 5, the upper end of the concave point forming sleeve 7 is provided with a lower concave through hole which penetrates the concave point forming sleeve 7 longitudinally and is used for processing the front of the product tape 27, the upper end of the concave point forming sleeve 7 located below the lower opening of the lower concave through hole is provided with a step which is used in cooperation with the lower concave through hole to process the front of the product tape 27.

[0056] The control method is:

[0057] 1) When working, first, the present application is installed in the required stamping die, namely, the upper die assembly is installed in the upper die of the stamping die, and the lower die assembly is installed in the lower die of the stamping die, and then the upper and lower stamping dies are respectively installed in the fine punching machine;

[0058] 2) Then, the driving motor 18 is started, the driving motor 18 drives the driving roller 12 through the chain to drive the conveying belt 23, and then the product strip 27 is conveyed into the cavity between the discharge plate 3 and the die plate 5 through the conveying belt 23, and the upper end surface of the product strip 27 is the back surface during processing, and the lower end surface of the product strip 27 is the front surface;

[0059] 3) At this time, the first infrared sensor 39 detects and obtains the distance h1 between the first infrared sensor 39 and the back surface of the product strip 27, and the second infrared sensor 40 detects and obtains the distance h2 between the second infrared sensor 40 and the front surface of the product strip 27;

[0060] 4) When h1 is greater than h2, the conveying belt 23 is paused, and then the driving cylinder 19 is started to make the piston rod of the driving cylinder 19 extend upward to drive the floating plate 17 to move upward, and the floating plate 17 drives the product strip 27 to move during the upward movement until h1 is equal to h2;

[0061] 5) When h1 is less than h2, the conveying belt 23 is paused, and then the driving cylinder 19 is started to make the piston rod of the driving cylinder 19 retract downward to drive the floating plate 17 to move downward, and the floating plate 17 drives the product strip 27 to move during the downward movement until h1 is equal to h2;

[0062] 6) During the upward and downward movement of the floating plate 17, the product strip 27 will vibrate due to inertia, and when the vibration stops, the product strip 27 in the cavity will tilt upward or downward because the product strip 27 is metal and has the ability to deform;

[0063] 7) At this time, the third infrared sensor 41 detects and obtains the distance h3 between the third infrared sensor 41 and the back surface of the product strip 27, and the fourth infrared sensor 42 detects and obtains the distance h4 between the fourth infrared sensor 42 and the front surface of the product strip 27;

[0064] 8) When h3 is greater than h4, the product strip 27 in the cavity tilts downward at this time, and the sliding cylinder 22 is started at this time to make the piston rod of the sliding cylinder 22 extend to the right to drive the pressure roller 26 to move to the right to adjust the product strip 27, and during the movement of the pressure roller 26 to the right, h3 will decrease and tend to h4, and when the absolute value of the difference between h3 and h4 is within the preset error range, the product strip 27 can be punched;

[0065] 9) When h3 is less than h4, the product strip 27 in the cavity is inclined upward, the slide cylinder 22 is started, the piston rod of the slide cylinder 22 is extended to the right to drive the pressure roller 26 to move to the right, under the action of the pressure roller 26 and the gravity of the product strip 27, h3 increases and tends to h4, when the absolute value of the difference between h3 and h4 is within the preset error range, the product strip 27 can be punched;

[0066] 10) When h1 is equal to h2 and the absolute value of the difference between h3 and h4 is within the preset error range, the stamping die with the upper and lower die assemblies is closed until the back of the product strip 27 is attached to the stripper plate 3 and the front of the product strip 27 is attached to the concave die plate 5, at this time the stamping die reaches the closing point, and then the fine blanking machine is started to prepare to press the product strip 27;

[0067] 11) When pressing, the hydraulic machine of the fine blanking machine above the stamping die presses the upper die of the stamping die, the upper die ejector pin 1 conducts the blanking force generated by the fine blanking machine to the stripper plate backing plate 2 and the stripper plate 3, at this time the punch 11 embedded in the punch fixed sleeve 10 is gradually pressed into the product strip 27 to process the back of the product strip 27 and gradually press the required concave point back structure;

[0068] 12) During the pressing process, the concave point forming sleeve 7 embedded in the concave die plate 5 is gradually pressed into the product strip 27 to process the front of the product strip 27 and gradually press the concave point front structure, until the upper die of the stamping die is at the upper dead point, at this time the concave point structures on the front and back of the product strip 27 are fully processed and formed, at this time the hydraulic machine of the fine blanking machine no longer presses the upper die ejector pin 1, the pressure is completely released until the pressure is 0, and then the piston rod of the hydraulic machine of the fine blanking machine starts to return upward;

[0069] 13) When stripping, the concave point forming sleeve 7 embedded in the concave die plate 5 and the concave die backing plate 6 are lowered to strip the product strip 27, when the product strip 27 is separated by 5mm, the hydraulic machine of the fine blanking machine again presses the upper die ejector pin 1 to drive the stripper plate backing plate 2 and the stripper plate 3 to push the product strip 27 downward to separate the product strip 27 from the punch 11 embedded in the punch fixed sleeve 10 and the stripper plate 3;

[0070] 14) At this point, the processing of the product strip 27 is completed.

[0071] The above is only a specific embodiment of the present application, but the structural characteristics of the present application are not limited to this, any changes or modifications made by those skilled in the art within the scope of the present application are covered by the patent scope of the present application.

Claims

1. A method for controlling the blanking force of a precision stamping die-forming structure, the die-forming structure comprising a product strip (27) and a support frame (28), characterized in that, The support frame (28) is provided with a fine blanking die (29) on the right side. The fine blanking die (29) is provided with a processing position (30) for processing the product strip (27). The support frame (28) is provided with a conveyor belt (23). The right side of the conveyor belt (23) is provided with a pressure roller (26) for fine adjustment of the product strip (27). The product strip (27) is fed into the processing position (30) through the conveyor belt (23) and the pressure roller (26). The right side of the conveyor belt (23) is provided with a guide frame (24). The lower end of the guide frame (24) is provided with a floating plate (17). A drive cylinder (19) is provided on the support frame (28), and a sliding cylinder (22) is provided on the upper end of the floating plate (17) to finely adjust the product strip (27) in conjunction with the drive cylinder (19); the support frame (28) includes a base plate (15) located below the floating plate (17), and support plates (16) are welded to the left and right ends of the base plate respectively; the drive cylinder (19) is vertically installed on the upper end of the base plate (15), and the upper end of the piston rod of the drive cylinder (19) is connected to the center of the bottom surface of the floating plate (17) by a screw; the sliding cylinder (22) is horizontally installed on the floating plate (17). 7) The right end of the piston rod of the sliding cylinder (22) is connected to the center of the bottom of the left end face of the guide frame (24) by a screw; the lower end of the floating plate (17) is provided with a drive motor (18), and the output shaft of the drive motor (18) is sleeved with a drive sprocket (38) that works with the driven sprocket (37). The drive sprocket (38) and the driven sprocket (37) are connected by a chain drive. The two mounting plates (14) are respectively fitted with drive bearings for working with the drive shaft (35). The front end of the drive shaft (35) is inserted into the mounting plate (14) located on the front side. 4) The drive bearing center on the drive shaft (35) is inserted into the drive bearing center on the mounting plate (14) located on the rear side. The two mounting plates (14) on the right side of the drive bearing are respectively fitted with driven bearings for use with driven shaft (36). The front end of the driven shaft (36) is inserted into the driven bearing center on the mounting plate (14) located on the front side. The rear end of the driven shaft (36) is inserted into the driven bearing center on the mounting plate (14) located on the rear side. The upper end of the drive motor (18) is connected to the lower end face of the floating plate (17) by setting screws.The fine stamping die (29) is provided with an upper die ejector pin (1) at the upper end for transmitting the blanking force required when forming the product strip (27). The upper die ejector pin (1) is provided with an upper die assembly at the lower end for working with the upper die ejector pin (1) to process the back side of the product strip (27). The upper die assembly is provided with a lower die assembly below it for working with the upper die assembly to process the front side of the product strip (27). The upper die assembly includes a punching assembly for stamping the back side of the product strip (27). The lower die assembly includes a recessed forming sleeve (7) for working with the punching assembly to stamp the front side of the strip.The upper die assembly includes a stripper plate (3) for mounting the punching assembly. The upper end of the stripper plate (3) is provided with a stripper plate pad (2). The lower die assembly includes a concave template (5) for mounting the concave forming sleeve (7). A first infrared sensor (39) is embedded at the left end of the stripper plate (3), and a second infrared sensor (40) is embedded at the left end of the concave template (5). The first infrared sensor (39) and the second infrared sensor (40) are symmetrically distributed vertically. A third infrared sensor (41) is embedded at the right end of the stripper plate (3), and a fourth infrared sensor (42) is embedded at the right end of the concave template (5). The third infrared sensor (41) and the fourth infrared sensor (42) are symmetrically distributed vertically. The lower end of the concave template (5) is provided with a concave mold pad (6). A mold cavity for inputting the product strip (27) to be processed is left between the stripper plate (3) and the concave template (5). The punching assembly includes a punch (11) installed on the stripper plate (3) and used to process the back of the product strip (27). A punch fixing sleeve (10) for limiting the punch (11) is provided around the punch (11). A nested through hole is opened in the center of the stripper plate (3) longitudinally penetrating the stripper plate (3) and used to embed the punch fixing sleeve (10). The lower end of the stripper plate pad (2) located directly above the nested through hole is provided with an upper embedding groove for embedding the upper end of the punch (11). The punch fixing sleeve (10) is cylindrical. The lower end of the fixed sleeve (10) is provided with an arc-shaped processing groove for use with the punch (11). A lower fitting through hole for inserting the lower end of the punch (11) is opened between the center of the upper end face of the punch fixed sleeve (10) and the center of the bottom of the arc-shaped processing groove. The upper end face of the punch fixed sleeve (10) and the upper end face of the unloading plate (3) respectively abut against the lower end face of the unloading plate pad (2). The longitudinal section of the punch (11) is "T" shaped. The upper end of the punch (11) is embedded in the upper fitting groove, and the lower end of the punch (11) is inserted into the lower fitting through hole. Its length is longer than the length of the punch fixed sleeve (10). The center of the concave template (5) is provided with a concave through hole that penetrates the concave template (5) longitudinally and is used to insert the concave forming sleeve (7). The upper end of the concave forming sleeve (7) has a stepped longitudinal section, and the lower end of the concave forming sleeve (7) has an inverted "T" shape. The lower end of the concave forming sleeve (7) is embedded in the concave through hole. The lower end of the concave forming sleeve (7) and the lower end of the concave template (5) abut against the upper end of the concave mold pad (6). The upper end of the concave forming sleeve (7) is located above the upper end of the concave template (5). The upper end of the concave forming sleeve (7) has a longitudinal through hole at the top center of the upper end of the concave forming sleeve (7) for processing the front side of the product strip (27). The upper end of the concave forming sleeve (7) located below the upper opening of the concave through hole has a step that works with the concave through hole to process the front side of the product strip (27). The control method is as follows: During operation, the upper die assembly is installed into the upper die of the stamping die, and the lower die assembly is installed into the lower die of the stamping die. Then, the upper and lower stamping dies are respectively installed into the fine stamping machine. Then the drive motor (18) is started. The drive motor (18) drives the active roller (12) through the chain to drive the conveyor belt (23). Then the product strip (27) is conveyed through the conveyor belt (23) to the mold cavity located between the unloading plate (3) and the concave template (5). During processing, the upper end face of the product strip (27) is the back side and the lower end face of the product strip (27) is the front side. At this time, the first infrared sensor (39) will detect and determine the distance h1 between the first infrared sensor (39) and the back of the product strip (27), while the second infrared sensor (40) will detect and determine the distance h2 between the second infrared sensor (40) and the front of the product strip (27). When h1 is greater than h2, the conveyor belt (23) is paused, and then the drive cylinder (19) is started to extend the piston rod of the drive cylinder (19) upward to drive the floating plate (17) to move upward. During the upward movement, the floating plate (17) drives the product material belt (27) to move until h1 equals h2. When h1 is less than h2, the conveyor belt (23) is paused, and then the drive cylinder (19) is started to make the piston rod of the drive cylinder (19) retract downward to drive the floating plate (17) to move downward. During the downward movement, the floating plate (17) drives the product material belt (27) to move until h1 equals h2. During the upward and downward movement of the floating plate (17), the product strip (27) will vibrate due to inertia. When the vibration stops, the product strip (27) is made of metal and has the ability to deform. The product strip (27) located in the mold cavity will tilt upward or downward after the vibration stops. At this time, the third infrared sensor (41) will detect and determine the distance h3 between the third infrared sensor (41) and the back of the product strip (27), while the fourth infrared sensor (42) will detect and determine the distance h4 between the fourth infrared sensor (42) and the front of the product strip (27). When h3 is greater than h4, the product strip (27) located in the mold cavity tilts downward. At this time, the sliding cylinder (22) is activated, and the piston rod of the sliding cylinder (22) extends to the right, driving the pressure roller (26) to move to the right to adjust the product strip (27). During the process of the pressure roller (26) moving to the right, h3 will decrease and tend to h4. When the absolute value of the difference between h3 and h4 is within the preset error range, the product strip (27) can be stamped. When h3 is less than h4, the product strip (27) located in the mold cavity tilts upward. At this time, the sliding cylinder (22) is activated, and the piston rod of the sliding cylinder (22) extends to the right, driving the pressure roller (26) to move to the right. Under the action of the pressure roller (26) and the product strip (27) itself, h3 will increase and tend to h4. When the absolute value of the difference between h3 and h4 is within the preset error range, the product strip (27) can be stamped. When h1 is equal to h2 and the absolute value of the difference between h3 and h4 is within a preset error range, close the stamping die equipped with the upper and lower die components until the back surface of the product strip (27) is in contact with the stripper plate (3) and the front surface of the product strip (27) is in contact with the concave template (5). At this time, the stamping die reaches the closing point, and then start the fine blanking press to prepare for pressurizing the product strip (27). During pressurization, the hydraulic press of the fine blanking press located directly above the stamping die pressurizes the upper die of the stamping die. When the upper die of the stamping die is pressurized, the ejector rod (1) on the upper die conducts the blank holding force generated by the fine blanking press to the stripper plate spacer (2) and the stripper plate (3). At this time, the punch (11) embedded in the punch fixing sleeve (10) is gradually pressed into the product strip (27) to process the back surface of the product strip (27) and gradually press out the required concave point back surface structure. During the pressurization process, the concave point forming sleeve (7) embedded in the concave template (5) is gradually pressed into the product strip (27) to process the front surface of the product strip (27) and gradually press out the concave point front surface structure. Until the upper die of the stamping die is at the top dead center, at this time, the concave point structures on the front and back surfaces of the product strip (27) are fully processed and formed. At this time, the hydraulic press of the fine blanking press no longer pressurizes the ejector rod (1) on the upper die, and the pressure is completely released until the pressure is 0. Then, the piston rod of the hydraulic press of the fine blanking press starts to return upward. When stripping, lower the concave point forming sleeve (7) and the concave die spacer (6) embedded in the concave template (5) together to disengage from the product strip (27). When it is disengaged from the product strip (27) by 5 mm, the hydraulic press of the fine blanking press pressurizes the ejector rod (1) on the upper die again,带动 the stripper plate spacer (2) and the stripper plate (3) to push the product strip (27) downward to separate it, so that the product strip (27) is disengaged from the punch (11) embedded in the punch fixing sleeve (10) and the stripper plate (3). 至此,对产品料带(27)加工完成。 2. The method for controlling the forming structure of the fine stamping blank holder force according to claim 1, characterized in that, At the upper end of the bottom plate (15), "T”-shaped guide rods (31) for limiting and supporting the floating plate (17) are respectively provided at the four corners. A linear bearing (20) is sleeved on each guide rod (31), and the four linear bearings (20) are respectively embedded in the four corners of the floating plate (17). The outer periphery of the waist of the linear bearing (20) is connected to the bottom surface of the floating plate (17) by setting screws.

3. The method for controlling the forming structure of the fine stamping blank holder force according to claim 1, characterized in that, Sliding rails (32) are respectively laid on the front and back sides of the floating plate (17) on the right side of the sliding cylinder (22). The guiding frame (24) is in a "mouth” shape. The pressure roller (26) is horizontally mounted on the guiding frame (24). A guiding roller (25) is provided on the guiding frame (24) below the pressure roller (26). The bottom of the guiding frame (24) is welded with a slider (33). Sliding grooves (34) slidably connected to the sliding rails (32) are respectively opened on the front and back sides of the bottom of the slider (33). Note: In the translation of "脱料时,将嵌装在凹模板(5)中的凹点成型套(7)和凹模垫板(6)一起下降脱开产品料带(27),当与产品料带(27)脱离至5mm后,精冲机的液压机对上模顶杆(1)再次加压,带动卸料板垫板(2)和卸料板(3)将产品料带(27)向下推离,使产品料带(27)与嵌在冲针固定套(10)内的冲针(11)及卸料板(3)进行脱离; ", there is an unclear part in the original Chinese text "带动 the stripper plate spacer (2) and the stripper plate (3) to push the product strip (27) downward to separate it", and I have tried my best to make the translation understandable according to the context. If there are any inaccuracies, please let me know. Also, the part "至此,对产品料带(27)加工完成。 " is directly translated as "至此,对产品料带(27)加工完成。" because it seems to be an incomplete or unclear description in the original Chinese. If you can provide more context or clarify this part, the translation can be more accurate.

4. The method for controlling the forming structure of the fine stamping blank holder force according to claim 1, characterized in that, The floating plate (17) is welded with mounting plates (14) for mounting the conveyor belt (23) on both the front and rear sides. The left end of the conveyor belt is provided with an active roller (12). The conveyor belt (23) located to the left of the active roller (12) is provided with several driven rollers (13) that cooperate with the active roller (12). A drive shaft (35) for mounting the active roller (12) is inserted between the two mounting plates (14). The active roller (12) is slidably sleeved on the drive shaft (35). Several driven shafts (36) that cooperate with the driven rollers (13) are inserted between the two mounting plates (14) located to the right of the drive shaft (35). The driven rollers (13) are slidably sleeved on the driven shafts (36). A driven sprocket (37) for driving the drive shaft (35) is sleeved on the drive shaft (35) located at the front end of the active roller (12).

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