CN111687256B - Product rotation forming processing method - Google Patents

Product rotation forming processing method Download PDF

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Publication number
CN111687256B
CN111687256B CN202010554820.0A CN202010554820A CN111687256B CN 111687256 B CN111687256 B CN 111687256B CN 202010554820 A CN202010554820 A CN 202010554820A CN 111687256 B CN111687256 B CN 111687256B
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China
Prior art keywords
piece
groove
lower die
bent
bending
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CN202010554820.0A
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CN111687256A (en
Inventor
谢茂春
吴艺
黄佳佳
范堡清
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Shenzhen Shumamou Automobile Technology Co ltd
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Shenzhen Shumamou Automobile Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/22Auxiliary equipment, e.g. positioning devices

Abstract

The invention relates to a product rotary forming processing method, which comprises a bending forming device, wherein the bending forming device comprises an upper die and a lower die which are controlled by a circuit unit, the bottom of the upper die is provided with a mounting groove, a rotating bending piece is mounted in the mounting groove, the side wall of the bending piece corresponding to the lower die is provided with a forming groove, the bending piece is also provided with a reset groove corresponding to the wall of the mounting groove, the bottom of the upper die is also provided with a stop block tangent to the outer wall of the bending piece, the upper die is provided with a reset piece in the reset groove, the end surface of the lower die or the bending piece is correspondingly provided with a laser sensor and a reflection block which are matched in the vertical direction, and firstly, the piece to be bent is placed on the lower die and the upper die is started to move downwards; secondly, two ends of the opening of the forming groove of the part to be bent are pressed against the part to be bent to start a laser sensor; and finally, the laser sensor starts the stamping of the upper die through the circuit unit after receiving the reflected light. According to the invention, through the alignment and matching of the laser sensor and the reflection block, misoperation is avoided, and the yield is ensured.

Description

Product rotation forming processing method
Technical Field
The invention relates to the field of machining and forming, in particular to a product rotation forming processing method.
Background
Machining is an important aspect in industrial production and is often performed by stamping and forming processes for metal materials. In the existing stamping and bending forming process, the stamping and bending forming process generally comprises an upper die and a lower die, wherein a piece to be bent is arranged on the lower die, and the upper die stamps downwards to bend the edge of a product; however, in the prior art, the product to be bent is placed on the lower die and then judged according to the position relation with the upper die and the lower die only through visual inspection by people, and then the product is formed through one-time stamping, often, the product to be bent is not combined with the die tightly and stably, and then the product is stamped downwards through misoperation, so that defective products are generated, the defective rate of the product is increased, resources are wasted, and when the product to be bent is clamped between the upper die and the lower die, whether the clamping is stable and firm is not convenient to judge through visual inspection, and meanwhile, in the stamping process and the demolding process, the die is also easy to collide with the product, so that the appearance of the product is damaged, and the quality of the product is influenced.
Disclosure of Invention
Aiming at the existing defects, the invention provides a product rotation forming processing method capable of avoiding misoperation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a product rotary forming processing method comprises a bending forming device, wherein the bending forming device comprises an upper die and a lower die which are controlled by a circuit unit to be opened and closed relatively, a mounting groove is formed in the bottom of the upper die, a cylindrical bending piece which is radially rotated in the mounting groove and partially protrudes out of the mounting groove is mounted in the mounting groove, a V-shaped forming groove is formed in the side wall of the corresponding lower die, a reset groove which is used for resetting the bending piece and corresponds to the wall of the mounting groove is further formed in the side wall of the bending piece, a stop block which is tangent to the outer wall of the bending piece is further arranged at the bottom of the upper die, a reset piece which is elastically stretched in the reset groove and can reset the bending piece is arranged on the upper die, a laser sensor which emits laser in the vertical direction is arranged on the end face of the lower die or the bending piece, and a reflecting block which reflects the laser emitted by the laser sensor is correspondingly arranged on the end face of the bending piece or the lower die, the laser sensor or the reflection block is adjustable and is arranged on a bent piece in a limiting mode, a plurality of hole sites are arranged on the bent piece along the opening end of the forming groove and are provided with a sliding groove or a plurality of hole sites, the sliding groove or the hole sites are detachably provided with the laser sensor or the emission block, the reset groove is a V-shaped groove which is not larger than a 90-degree angle, the platform is formed by bending outwards on the side wall of one side of the reset piece corresponding to the reset groove, the platform is in a parallel structure with the lower die when the piece to be bent is compressed between the upper die and the lower die, and the processing steps are as follows:
s1, placing the piece to be bent on the lower die, and starting the upper die to move downwards;
s2, pressing the two ends of the opening of the bending piece forming groove against a piece to be bent, and starting a laser sensor to emit laser;
and S3, after receiving the light reflected by the reflection block, the laser sensor transmits information to the circuit unit, and the circuit unit starts the upper die to punch and bend so that the piece to be bent is completely attached to the inner wall of the forming groove to complete punching.
Preferably, when the laser sensor or the reflection block is arranged on the upper die, the position of the laser sensor or the reflection block is obtained according to the following formula:
K=(PT+PR)/tan(A/2)
k is the vertical distance from the installation position of the laser sensor or the reflection block to the perpendicular line passing through the vertex of the forming groove, PT is the thickness of a piece to be bent, PR is the radius of the corresponding bending angle of the lower die, and A is the angle value of the vertex angle of the bent piece.
Preferably, the laser sensor or the reflection block is adjustable and is arranged on the bending piece in a limiting way.
Preferably, the bending piece is installed in the installation groove in a matching and rotating mode, the reset piece is an industrial spring, one end of the reset piece is fixedly connected to the side wall of the reset groove opposite to the reset piece, and the other end of the reset piece is connected to the upper die through a screw.
Preferably, the reset groove is a V-shaped groove with an angle not greater than 90 degrees, and a platform is formed by bending the side wall corresponding to one side of the reset piece outwards, and the platform and the lower die form a parallel structure when the piece to be bent is pressed between the upper die and the lower die.
Preferably, the angle range of the forming groove is 60 to 150 degrees.
Preferably, the angle of the forming groove is 87 degrees.
Preferably, the lower die is provided with a lower die reset assembly, and the lower die reset assembly comprises a through hole penetrating through the upper surface and the lower surface of the lower die, a nitrogen spring installed in the through hole, ejection pieces correspondingly arranged at two ends of the through hole and correspondingly connected with the upper end and the lower end of the nitrogen spring, and a spring base.
Preferably, the reflecting block includes a protruding block protruding from an end surface of the bending piece or the lower mold, and a reflecting mirror embedded in the protruding block.
Preferably, the open end of the forming groove is in a round corner structure.
The invention has the beneficial effects that: the V-shaped forming groove on the bending piece is arranged corresponding to the lower die, when the piece to be bent is placed between the upper die and the lower die for punching, when the upper die runs to a certain amount, both ends of the opening of the forming groove are driven to be pressed against the piece to be bent, laser emitted by the lower die or a laser sensor on the bending piece is reflected back by the bending piece or a reflecting block on the lower die, the laser sensor receives reflected light and indicates that the piece to be bent is stably fixed between the upper die and the lower die, then the laser sensor transmits information to the circuit unit, the punching bending of the upper die is started under the control of the circuit unit so that the piece to be bent is completely attached to the inner wall of the forming groove, when the laser sensor and the reflecting block do not correspond well, the punching stroke of the upper die is stopped, the wrong operation is avoided, and the problem that inferior-quality products are generated due to the punching of the piece to be bent when the piece to be bent is not fixed is also avoided, meanwhile, the placing state of the piece to be bent during stamping is monitored through the cooperation of the laser sensor and the reflecting block, and the yield of the product is guaranteed. Due to the rotation of the bending piece, the bending piece is always attached to the surface of the piece to be bent in the stamping and bending processes, so that the damage to the surface of a product in the stamping and demolding processes is avoided, the surface state of the product is improved, and the post-treatment process cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a member to be bent stabilized under a bent member according to an embodiment of the present invention;
FIG. 2 is a schematic view of the bent structure of the embodiment of the present invention;
fig. 3 is a cross-sectional view of an embodiment of the present invention along a reset element;
part names and serial numbers in the figure: 1-upper die 10-mounting groove 2-lower die 20-lower die reset assembly 200-through hole 201-nitrogen spring 202-ejection part 203-spring base 3-bending part 30-forming groove 31-reset groove 310-platform 4-stop 5-reset part 6-laser sensor 7-reflection block 8-piece to be bent.
Detailed Description
For the purpose of more clearly illustrating the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, for clear and complete description, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention. In addition, directional terms used in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer to directions only as shown in the attached drawings, and are used for better and clearer explanation and understanding of the present invention, and do not indicate or imply orientation which the present invention must have, and thus, should not be construed as limiting the present invention.
The embodiment of the invention is shown in fig. 1 to 3, a product rotary forming processing method includes a bending forming device, the bending forming device includes an upper die 1 and a lower die 2 which are controlled by a circuit unit (not shown) to be opened and closed relatively, the upper die and the lower die are the same as the upper die and the lower die of a conventional bending die, the starting and the closing of the die are realized by correspondingly controlling the electrical conduction of the circuit unit, the lower die 2 is a fixed anvil block, the upper die 1 is movable and correspondingly punches different materials by controlling different strokes thereof according to different requirements, the circuit unit is the same as the circuit unit of the conventional stamping bending die and can be arranged on the upper die 1 or the lower die 2 and controls the stamping of the upper die 1 by corresponding circuit conduction, for example, the circuit unit is provided with an MCU for control, the bottom of the upper die 1 is provided with a mounting groove 10, the cylindrical bending piece 3 which is arranged in the mounting groove 10 and partially protrudes out of the mounting groove 10 and rotates in the radial direction of the mounting groove 10, that is, the bending piece 3 is rotatably connected in the mounting groove 10, the rotating central axis of the bending piece 3 is the same as the axial direction of the mounting groove 10, and the part of the bending piece 3 protrudes out of the mounting groove 10, so that the bending piece 3 can be always pressed on the piece 8 to be bent to perform the bending function, the side wall of the corresponding lower die 2 of the bending piece 3 is provided with a V-shaped forming groove 30, the depth of the forming groove 30 is the same as the height of the bending piece 3 protruding out of the mounting groove 10, so that the accurate and smooth completion of the punching can be ensured, the mutual influence can not be generated, the opening end of the forming groove 30 is of a round angle structure, and the round angle structure avoids the surface damage caused by the sharp point when the bending piece 3 is pressed on the piece 8 to be bent, the angle of the V-shaped groove can be set into different angles according to different requirements, the angle range can be 60-150 degrees, and the conventional requirement is met, at the moment, the springback possibly generated by metal is considered, when the V-shaped groove needs to be bent into 90 degrees, the angle of the forming groove 30 is preferably 87 degrees, so that the angle of the piece 8 to be bent after being bent is more accurate, meanwhile, under the condition of 87 degrees, the bending angle can be changed by grinding the groove wall on the same side with the rotating direction of the bending piece 3 during bending, for example, the groove wall close to the bottom surface of the forming groove 30 is ground to reduce the angle, the groove wall near the opening end of the forming groove 30 is ground to expand the angle, the bending angle can reach 135 degrees at the maximum, when the angle of the forming groove 30 is other values, and in the same way, when the angle needs to be bent into other angles, the angle of the forming groove 30 can be selected to be 2-3 degrees smaller than the angle needed to be bent, the sidewall of the bending member 3 is further provided with a reset groove 31 corresponding to the groove wall of the mounting groove 10 for resetting the bending member, which means that the reset groove 31 and the forming groove 30 are located on two opposite sides of the bending member 3, the reset groove 31 is a V-shaped groove with an angle not greater than 90 degrees and is formed with a platform 310 by bending the sidewall corresponding to one side of the reset member 5 outwards, so as to ensure that the force applied to the reset member 5 is concentrated and not dispersed. The platform 310 and the lower die 2 form a parallel structure when the piece 8 to be bent is pressed between the upper die 1 and the lower die 2, in this state, two flanges of the forming groove 30 are both pressed against the piece 8 to be bent, the reset piece 5 is positioned on the platform 310, the platform 310 is parallel to the lower die 2, the force applied by the reset piece 5 on the two flanges of the bent piece 3 can not be influenced, the pressure applied to the piece 8 to be bent in the stamping process can not be influenced, the downward stamping force of the upper die 1 is ensured to be in the vertical direction, the force dispersion is avoided, the power consumption of the device can be reduced, the bottom of the upper die 1 is also provided with a stop block 4 tangent to the outer wall of the bent piece 3, the stop block 4 plays an auxiliary guiding and positioning role in the rotation of the bent piece 3 and avoids the problem that the bent piece shakes in the rotation, the upper die 1 is provided with the reset piece 5 which elastically stretches out and draws back in the reset groove 31 and can reset the bent piece 3, the reset piece 5 rotates to apply pressure to the reset piece 5 in the process that the bent piece 3 bends a piece 8 to be bent along with the upper die 1 in a downward stamping mode, the reset piece 5 is compressed, after the bending is completed, the downward impact force of the upper die 1 disappears, the reset piece 5 extends under the action of elastic force, and the bent piece 3 rotates in the opposite direction to restore to the initial state, the laser sensor 6 for emitting laser to the vertical direction is arranged on the end face of the lower die 2 or the bent piece 3, on one hand, the laser sensor 6 is provided with electric power through the circuit unit, on the other hand, the reset piece 5 is used for receiving information returned by the laser sensor 6, so that the downward stamping of the upper die 1 is controlled, the laser is emitted to the vertical direction, when the piece to be bent is clamped between the upper die and the lower die, the three parts are in a parallel mode, the impact force applied by the upper die is vertically downward, and the dispersion of the impact force is avoided, the end face of the bending piece 3 or the lower die 2 is correspondingly provided with a reflection block 7 for reflecting laser emitted by a laser sensor 6, the laser sensor 6 or the reflection block 7 is adjustably and limitedly arranged on the bending piece, the opening end of the bending piece 3 along the forming groove 30 is provided with a sliding groove for detachably mounting the laser sensor 6 or the emission block 7 or a plurality of hole sites which are arranged at intervals, the relative position direction and the relative distance between the laser sensor 6 and the emission block can be judged by utilizing the linear characteristic of laser light, according to different structures, the laser sensor 6 can be arranged at the top which can not be covered when the end face of the lower die 2 is stamped, or can be directly arranged on the end face of the lower die 2 and slightly protrudes out of the end face, or is arranged on the end face of the bending piece 3 and slightly protrudes out of the end face, so that the light can be conveniently ejected and matched with the reflection block 7, and the laser sensor 6 and the reflection block 7 appear in pairs, when the lower die 2 is provided with the laser sensor 6, the bending piece 3 is provided with the reflecting block 7, when the lower die 2 is provided with the reflecting block 7, the bending piece 3 is provided with the laser sensor 6, because the bending piece 6 rotates, in order to prevent the laser sensor 6 from rotating to damage the electrical connection with the circuit unit, the laser sensor 6 is preferentially selected to be arranged on the lower die 2, and in order to adapt to different pieces 8 to be bent and bending angles and expand the application range of the bending piece, the laser sensor 6 or the reflecting block 7 is adjustably and limitedly arranged on the bending piece 3, the adjustable arrangement can be that a plurality of hole sites are arranged on the bending piece 3 at intervals along the opening end of the forming groove 30, so that the laser sensor 6 or the reflecting block 7 can be detachably arranged in each hole site, and the dismounting can be realized by adopting a threaded connection mode and also can be realized by adopting a mortise-tenon connection mode, the adjusting device can also be that the opening end along the shaping groove 30 on the piece 3 that buckles sets up the spout, and laser sensor 6 or reflection piece 7 slide and establish in the spout, then set up corresponding limit structure in the spout, for example spacing hole, fix the position of laser sensor 6 or reflection piece 7 in the spout through limit structure, then can fix through conventional modes such as screw when fixed. The rotary forming processing of the product is carried out by using the bending forming device, and the processing steps are as follows:
s1, placing the piece 8 to be bent on the lower die 2, and starting the upper die 1 to move downwards; at the moment, the same as the traditional processing method, a piece to be bent, namely a piece to be processed, is placed on the lower die, the upper die is started to move downwards, when the upper die moves, one end of an opening of a forming groove on the bending piece is firstly pressed on the upper surface of the piece to be bent, the bending piece rotates under the action of pressure until two ends of the opening of the forming groove are pressed on the upper surface of the piece to be bent, so that when the piece to be bent 8 is placed between the upper die and the lower die for punching, when the upper die 1 runs to a certain amount, the two ends of the opening of the forming groove 30 are driven to be pressed on the piece to be bent 8, an additional material pressing plate is not needed, and the cost is saved;
s2, pressing the two ends of the opening of the forming groove 30 of the bending piece 3 against the piece 8 to be bent, and starting the laser sensor 6 to emit laser; two ends of the opening of the forming groove are abutted against the upper surface of the piece to be bent to form two contact abutting positions, and a stable abutting state can be formed between the bent piece and the piece to be bent due to the V-shaped structure of the groove, so that the laser sensor can be started to emit laser at the moment;
and S3, after receiving the light reflected by the reflection block 7, the laser sensor 6 transmits information to the circuit unit, and the circuit unit starts the stamping of the upper die 1 to bend so that the piece 8 to be bent is completely attached to the inner wall of the forming groove 30 to complete stamping. At the moment, if the laser emitted by the laser sensor 6 is reflected by the reflection block 7, the light reflected by the laser sensor 6 indicates that the piece 8 to be bent is stably fixed between the upper die and the lower die, then the laser sensor 6 transmits information to the circuit unit, and the stroke of stamping and bending of the upper die 1 is started under the control of the circuit unit, so that the piece 8 to be bent is completely attached to the inner wall of the forming groove 30, when the laser sensor 6 and the reflection block 7 do not correspond well, the situation that two flanges of the piece 3 to be bent are not completely abutted against the surface of the piece 8 to be bent is indicated, at the moment, the stamping stroke of the upper die 1 is stopped, the problem that the piece 8 to be bent is stamped without being fixed to generate defective products is avoided, and meanwhile, the placing state of the piece 8 to be bent between the upper die and the lower die during stamping is monitored through the matching of the laser sensor 6 and the reflection block 7, the yield of the product is ensured. And because the piece 3 of buckling rotates, the piece 3 of buckling can be laminated with the surface of the piece 8 of waiting to bend all the time in the punching press is bent, just avoided the damage to the product surface in punching press and the drawing of patterns process, improved the surface state of product, saved aftertreatment technology cost, also can reduce the power consumption of device simultaneously.
In a further improvement, as shown in fig. 1 to 3, when the laser sensor 6 or the reflection block 7 is disposed on the upper mold 1, the position thereof is obtained according to the following formula:
K=(PT+PR)/tan(A/2)
k is the perpendicular distance from the installation position of the laser sensor 6 or the reflection block 7 to the perpendicular line passing through the top point of the forming groove 30, PT is the thickness of a piece 8 to be bent, PR is the radius of the corresponding bending angle of the lower die 2, and A is the angle value of the top angle of the bent piece 3.
Therefore, the laser sensor 6 and the reflecting block 7 can be arranged according to the thickness of different pieces 8 to be bent in actual production, and after the parts arranged on the bent pieces 3 are determined, the positions of the parts arranged on the lower die 2 can be correspondingly determined because the laser sensor 6 is in the vertical direction when being matched with the reflecting block 7.
Further improvement, as shown in fig. 1 to 3, the bending member 3 is rotatably mounted in the mounting groove 10 in a matching manner, which means that the shapes of the bending member and the mounting groove are the same, and an excessive gap is not generated between the bending member and the mounting groove, so that the smoothness of the rotation of the bending member 3 is ensured, the resetting member 5 is an industrial spring, one end of the resetting member 5 is fixedly connected to the side wall of the resetting groove 31 opposite to the resetting member, the other end of the resetting member is connected to the upper die 1 through a screw, so that the resetting effect is well achieved, the screw can be adjusted according to different requirements, and the resetting member 5 is pressed or loosened through adjusting the screw, so that different elastic forces are obtained.
In a further improvement, as shown in fig. 1 and 2, for the reflection block 7, in order to better reflect the reflected light back to the laser sensor 6, the reflection block 7 includes a protruding block protruding from the end surface of the bending piece 3 or the lower die 2, and a reflection mirror embedded in the protruding block, the protruding block may be integrally formed with the bending piece 3, or the protruding block may be fixedly connected to the end surface of the bending piece 3, and the reflection mirror may be a quartz glass mirror or a crystal.
In a further modification, as shown in fig. 3, a lower die reset assembly 20 is provided on the lower die 2, the lower die resetting component 20 comprises a through hole 200 penetrating through the upper surface and the lower surface of the lower die, a nitrogen spring 201 arranged in the through hole 200, ejector pieces 202 and a spring base 203 which are correspondingly arranged at two ends of the through hole 200 and correspondingly connected with the upper end and the lower end of the nitrogen spring 201, when will wait to bend 8 and place the punching press on lower mould 2, the bottom surface of waiting to bend 8 just supports and presses at the top of expecting a 202, nitrogen spring 201 is pushed down, the punching press is ended, pressure disappears nitrogen spring 201 and just kick-backs and will wait to bend 8 and 2 bounce-backs down, conveniently wait to bend 8 drawing of patterns, through-hole 200 and spring base 203 then make things convenient for the change maintenance to nitrogen spring 201, the top of expecting 202 is preferably planar structure then, be convenient for and wait to bend 8 laminating of bottom surfaces, guarantee to apply the homogeneity of the punching press power of waiting to bend 8.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (8)

1. A product rotational molding processing method is characterized in that: the bending forming device comprises an upper die and a lower die which are controlled by a circuit unit to be opened and closed relatively, wherein a mounting groove is formed in the bottom of the upper die, a cylindrical bending piece which is radially and rotatably arranged in the mounting groove and protrudes out of the mounting groove is mounted in the mounting groove, a V-shaped forming groove is formed in the side wall of the lower die corresponding to the bending piece, a reset groove which corresponds to the wall of the mounting groove and is used for resetting the bending piece is further formed in the side wall of the bending piece, a stop block which is tangent to the outer wall of the bending piece is further arranged at the bottom of the upper die, a reset piece which is elastically stretched in the reset groove and can reset the bending piece is arranged on the upper die, a laser sensor which emits laser in the vertical direction is arranged on the end face of the lower die or the bending piece, and a reflecting block which reflects the laser emitted by the laser sensor is correspondingly arranged on the end face of the bending piece or the lower die, the laser sensor or the reflection block is adjustable and is arranged on a bent piece in a limiting mode, a plurality of hole sites are arranged on the bent piece along the opening end of the forming groove and are provided with a sliding groove or a plurality of hole sites, the sliding groove or the hole sites are detachably provided with the laser sensor or the emission block, the reset groove is a V-shaped groove which is not larger than a 90-degree angle, the platform is formed by bending outwards on the side wall of one side of the reset piece corresponding to the reset groove, the platform is in a parallel structure with the lower die when the piece to be bent is compressed between the upper die and the lower die, and the processing steps are as follows: s1, placing the piece to be bent on the lower die, and starting the upper die to move downwards;
s2, pressing the two ends of the opening of the bending piece forming groove against a piece to be bent, and starting a laser sensor to emit laser;
and S3, after receiving the light reflected by the reflection block, the laser sensor transmits information to the circuit unit, and the circuit unit starts the upper die to punch and bend so that the piece to be bent is completely attached to the inner wall of the forming groove to complete punching.
2. The rotational molding process for a product according to claim 1, wherein: when the laser sensor or the reflecting block is arranged on the upper die, the position of the laser sensor or the reflecting block is obtained according to the following formula:
K=(PT+PR)/tan(A/2)
k is the vertical distance from the installation position of the laser sensor or the reflection block to the perpendicular line passing through the vertex of the forming groove, PT is the thickness of a piece to be bent, PR is the radius of the corresponding bending angle of the lower die, and A is the angle value of the vertex angle of the bent piece.
3. The rotational molding process for a product according to claim 1, wherein: the piece that buckles matches to rotate and installs in the mounting groove, it is the industry spring to reset the piece, the one end fixed connection that resets is on rather than the relative lateral wall that resets the groove, and the other end passes through screwed connection on last mould.
4. The rotational molding process for a product according to claim 1, wherein: the angle range of the forming groove is 60-150 degrees.
5. The rotational molding process for a product according to claim 4, wherein: the angle of the forming groove is 87 degrees.
6. The rotational molding process for a product according to claim 1, wherein: the lower die is provided with a lower die reset assembly, and the lower die reset assembly comprises a through hole penetrating through the upper surface and the lower surface of the lower die, a nitrogen spring installed in the through hole, ejection pieces and spring bases, wherein the ejection pieces and the spring bases are correspondingly arranged at two ends of the through hole and are correspondingly connected with the upper end and the lower end of the nitrogen spring.
7. The rotational molding process for a product according to claim 1, wherein: the reflecting block comprises a protruding block protruding from the end face of the bending piece or the lower die and a reflecting mirror embedded in the protruding block.
8. The rotational molding process for a product according to claim 1, wherein: the opening end of the forming groove is of a round angle structure.
CN202010554820.0A 2020-06-17 2020-06-17 Product rotation forming processing method Active CN111687256B (en)

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