CN211161476U

CN211161476U - Production line of metal dustpan handle beam

Info

Publication number: CN211161476U
Application number: CN201922069420.6U
Authority: CN
Inventors: 杨飞燕; 杨飞云; 杨长春; 杨忠民
Original assignee: Anyang Shuiye Jindun Machine Repair Factory
Current assignee: Anyang Shuiye Jindun Machine Repair Factory
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-04
Anticipated expiration: 2029-11-27

Abstract

A production line of a metal dustpan handle beam belongs to the dustpan processing field, the production line comprises a left handle beam forming line, a right handle beam forming line, a front handle beam forming line and a rear handle beam forming line, each line comprises a metal strip unfolding device, a metal strip curling device, an end part processing device, a handle part arc bending device and a lifting and discharging device, the metal strip passes through a plurality of devices along the length direction, in the production line, a sliding device which is vertical to the length direction of the metal strip is arranged below a lower die seat of the forming device except for a strip curling device die and a lifting and discharging device, a controller and a display screen are arranged in a production line, the production line, the structure between the hand beam of the dustpan and the side edge of the dustpan can be mutually matched, the production efficiency of the dustpan is further improved, the production cost of the dustpan is reduced, the market share of the dustpan in market competition is improved, and the traditional manual product is automatically produced.

Description

Production line of metal dustpan handle beam

Technical Field

The utility model relates to a production line of portable beam, in particular to production line of metal dustpan portable beam belongs to dustpan processing field.

Background

The dustpan is an essential daily article in daily life, and comprises a woven product and a plastic product, and most commonly comprises a metal product. Traditional metal product dustpan all utilizes manual work or semi-automatic production generally, and intensity of labour is big, product quality is uneven, along with the rising of labour cost, the rising value of preparation material, the increase of utilizing various materials preparation dustpan products, the competitiveness of manual work metal product dustpan is progressively weaker, its advantage disappears almost completely, however, in the market, the crowd who likes metal product's dustpan is still considerable, utilizes the automatic production line preparation to have compelled at the brow tip.

The traditional metal product production process is manufactured by using a punching machine tool, but as daily necessities such as a dustpan, a plurality of punching machines are needed to realize the production of products by using a plurality of sets of moulds matched with a plurality of transfer machines in the production, the price of the punching machines is high, and in addition, special transplanting machines and special manufacturing orders of the moulds are high, so that the investment is large, the cost is difficult to recover in a short time only by the slight profit in the dustpan, and common dustpan manufacturers can not invest and purchase a plurality of expensive punching machines for manufacturing dustpan production lines.

In the metal dustpan, in order to improve the durability and convenience of the dustpan, a T-shaped portable beam is generally arranged on the metal dustpan, the T-shaped portable beam comprises a portable cross beam spanning the left side and the right side, and a front-back direction portable beam connecting the left cross beam and the right cross beam with the back side, the traditional metal portable beam is manufactured by hand beating, in recent years, along with the rising of the plastic dustpan, the competitiveness of the metal dustpan is weaker and weaker, the pin quantity is reduced gradually, how to break the traditional manual production and improve the competitiveness of the metal dustpan becomes the consensus of metal dustpan manufacturers, the inventor of the application carries out the conceive research and development for improving the market share of the metal dustpan, and applies an invention patent of a dustpan production line with the patent application number of 2018214745776, and the utility model patent of the patent obtains the special right at present, in the metal dustpan production line, the production line is mainly an automatic production line for producing the dustpan main body, no production equipment for producing the dustpan handle is developed at this time, the handle of the dustpan is still off-line manual production operation, and with continuous improvement of company sales, the inventor thinks that on the basis of realizing automation of production of the dustpan main body at present, research and development can be further carried out in the production of the handle, and the production cost is further reduced, and the production efficiency is improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a production line of metal dustpan handle, its purpose make the structure between dustpan handle and the dustpan side coincide each other, further improve the production efficiency of dustpan, reduce the manufacturing cost of dustpan, improve the market share of dustpan in market competition, reach automated production with traditional handmade product to dustpan main part production has realized automated production, and the real situation of automated production has not been realized to dustpan handle still, and the inventor has further carried out the research and development to the handle production in the dustpan production to realized automated production, the utility model provides a production line of metal dustpan handle, its purpose makes the structure between dustpan handle and the dustpan side coincide each other.

The technical scheme of the utility model is that: a production line of a metal dustpan handle comprises a metal strip, the handle comprises a left handle, a right handle, a front handle and a rear handle, a metal strip unfolding device, a metal strip curling device, an end processing device, a handle arc bending device and a lifting and unloading device are arranged in the production line of the metal dustpan handle, detachable dies are arranged in the end processing device and the handle processing device, the end processing device and the handle processing device need to replace the respective forming dies in the end processing device and the handle processing device during forming of the left handle, the right handle, the front handle and the rear handle, a controller and a touch display screen are arranged in the production line, the lengths and various parameters of the left handle, the right handle, the front handle and the rear handle are input from the display screen, the end processing device and the handle processing device are arranged, and sliding devices with the sliding direction vertical to the length direction of the metal strip are respectively arranged at the lower parts of the handle arc bending device, the processing of the end processing device and the portable part processing device and the processing of the portable part arc bending device are respectively and alternately carried out, and the other side leaves the metal strip along the sliding device when one side is processed;

furthermore, the metal strip curling device comprises a plurality of paired curling rollers, two ends of roller shafts of the paired rollers are rotatably arranged on a pair of side plates, the pair of rollers arranged in the up-down direction on the inner sides of the side plates are meshed together by using curling gears, one end of the roller shaft of the upper row or the lower row of rollers in the paired rollers extends to the outer side of the side plate on the same side, a pair of chain wheels is arranged on each roller shaft on the outer side of the side plate, the upper row or the lower row of rollers are connected together by chains on the pair of chain wheels, at least one roller shaft is connected with a servo motor and a speed reducer, and the rollers at two ends of the paired rollers gradually bend two sides of the horizontally-driven metal strip towards the inner side of the metal strip to form a;

further, the end part processing device and the portable part processing device in the production line of the metal dustpan handle beam comprise an upper die base and a lower die base, the upper die base and the lower die base are fixed by using a support column, an oil cylinder is arranged on the upper surface of the upper die base, the end part of a rod of the oil cylinder penetrates through the upper die base and is connected to an upper die plate, a workpiece pressing plate is arranged below the upper die plate, a plurality of guide columns and guide sleeves which are matched with each other are respectively arranged between the workpiece pressing plate and the upper die plate, an elastic rubber block is arranged between the workpiece pressing plate and the upper die plate, and a lifting height limiter is arranged behind;

further, a die is arranged in the end part processing device of the left and right portable beams, the die comprises a shearing die, two sides of the shearing die are symmetrically provided with a punching die, a bending die and an end part curling and flattening die from near to far in sequence, the punching die comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is vertical to the length direction of the metal strip, and the radius of the circular arc of the bending die is equal to the radius of the circular edge excircle formed by the upper edge of the dustpan main body;

furthermore, a die is arranged in the end part processing device of the front and rear portable beams, the die comprises a shearing die, a bending die and an end part curling and flattening die are symmetrically arranged on two sides of the shearing die, a punching die is arranged between the shearing die and the bending die in front of the shearing die in the conveying direction of the metal strip, the punching die comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is vertical to the length direction of the metal strip, the length of the curled metal strip after shearing is equal to the length of the front and rear hand-held beams, the bending arc in front of the shearing die is the same as the circular arc formed by the upper edge of the dustpan main body in the length direction of the metal strip, and the bending arc at the rear of the shearing die is the same as the outer arc of the;

furthermore, a mould is arranged in the portable part processing device of the left and right portable beams, the mould comprises a plurality of punching moulds, the arrangement direction of the plurality of punching moulds is consistent with the length direction of the metal strip, the distance between the plurality of punching moulds is equal to that between the plurality of punching moulds in the end part processing device, in the portable part processing device, two through grooves which are consistent with the conveying direction of the metal strip are arranged on the upper mould and the pressing plate in the advancing direction of the metal strip, and the shapes of the through grooves are consistent with the curling shapes of two sides of the metal strip;

furthermore, a mould is arranged in the portable part processing device of the front and rear portable beams, the mould comprises a plurality of punching moulds and a portable part curling and flattening mould, the arrangement direction of the plurality of punching moulds is vertical to the conveying direction of the metal strip, in the portable part processing device, in the length direction of the metal strip, a bending mould matched with a bending arc on the curled metal strip is arranged on the mould behind the punching moulds, and the axial direction of the bending mould is vertical to the direction of the metal strip;

further, the arc-shaped bending device of the hand-held part comprises a bending cylinder, the cylinder rod end of the bending cylinder is connected with a rack with upward teeth, a rotating shaft end gear of the arc-shaped bending device is meshed on the rack, a rack moving guide rail is arranged below the rack, a pressing device fixing plate and a bending roller are arranged at the other end of the rotating shaft, a bearing rotating drum is arranged in the middle of the rotating shaft, a pressing cylinder is fixed on the side face of the fixing plate of the pressing device, a pressing roller is arranged at the end part of the pressing cylinder, the periphery of the pressing roller faces the periphery of the bending roller, the pressing roller rotates around the periphery of the bending roller, a groove with the width equal to that of the turned-up metal strip is arranged at the;

furthermore, the lifting and discharging device is arranged between the end part processing device and the processing device of the handheld part, the lifting and discharging device is provided with an upward extending cylinder, the end part of the upward extending cylinder is provided with a lifting part which can lift along a lifting guide rail, two forks with the same width as the curled metal strip are arranged on two sides above the lifting part, and the curled metal strip is positioned in the two forks;

furthermore, the bottom parts of the end part processing device, the portable part processing device and the portable part arc bending device are respectively provided with a sliding device with a sliding direction perpendicular to the advancing direction of the metal strip, each sliding device is connected with a sliding cylinder, and the end part processing device, the portable part processing device and the portable part arc bending device slide alternately to deviate or slide into the position of the conveyed metal strip.

The utility model discloses the positive effect who has is:

1) the metal strip material curling device is arranged in the production line of the metal dustpan handle beam, so that two sides of the metal strip material can be rolled into a smooth arc structure, the hands can be prevented from being scratched in the use process of the dustpan, the strength of the metal strip material is improved, and the curled edge plays a role of a reinforcing rib; the plurality of wheels are arranged in the metal strip edge rolling device, so that the two edges of the strip can be bent upwards and outwards firstly in the rotation of the rollers, then the edge bending parts are gradually upwards, the edge parts are bent towards the inner side of the strip, and finally the edge parts of the strip are bent towards the inner side and the lower side, so that the upper edges of the two sides are rolled into a semicircular state;

2) the oil cylinders are arranged in the end part processing device and the hand-held part processing device of the curled metal strip, so that the stamping pressure can be improved, multiple processes of shearing, bending and punching can be simultaneously carried out in the one-time descending process, the arrangement of processing stations and processing dies can be reduced, and the processing efficiency is improved; the lifting height limiter is arranged on the back of the upper die plate in the end part processing device and the portable part processing device, so that the lifting height of the stamping die can be detected, the overtravel of the lifting height in stamping can be prevented, the damage of relevant equipment of the die is prevented, meanwhile, a signal of the lifting height of the upper die can be fed back to the controller by utilizing the limiter, and the controller not only can control the lifting height of the upper die, but also can instruct the next action after receiving the signal; the rubber block is arranged between the workpiece pressing plate and the upper die plate, so that the rubber block can be compressed by utilizing the elasticity of the rubber block when being pressed downwards, the punch head extends out of the rubber block to punch or shear a product, and meanwhile, the function of supporting the workpiece pressing plate by utilizing a spring of the traditional workpiece pressing plate is also realized;

3) the end part processing device, particularly the shearing die, is arranged in the left and right hand beam forming lines, so that the position for shearing the curled metal strip can be determined according to the moving length by using the servo motor, the hand beams in the left and right directions or the front and rear hand beams can be sheared according to the set length, the punching die is arranged in the end part processing device of the hand beams in the left and right directions, the end part punching punch is used for punching the end part of the hand beam, and the hand beam can be fixed with the corresponding hole on the dustpan by using the rivet; the bending upper die is arranged in the processing device at the end part of the handle beam in the left-right direction, so that the bending part can be matched with the circular edge of the upper edge of the dustpan main body part, and the riveting processing is carried out in a tightly combined state, thus preventing the rivet from loosening in the long-term use process, and ensuring the quality of products;

4) an end processing device is arranged in the front and rear handle beam forming line, the function of the end processing device is the same as that of the end processing device in the 3), but no punching die is arranged at the upper end parts (behind the shearing die) of the front and rear handle beams; this is because the rear end of the cutting die of the front and rear hand rails (from the description of the processing horizontal transfer angle: above the hand rails) is fixed to the middle portion of the hand rails in the left-right direction, the punching direction of the middle portion is aligned with the longitudinal direction of the metal strip, and the processing at this position can be completed in the hand rail processing device in the front and rear hand rail forming line;

5) the left and right hand-held beams are formed by the hand-held part processing device, so that rivet punching can be processed and fixed on the upper end parts of the left and right hand-held beams at the hand-held parts, and the left and right hand-held beams and the front and rear hand-held beams can be fixed on the hand-held parts; through the through grooves which are matched with the curling arcs of the metal strips are arranged on the dies with the same interval on the two sides of the punching punch, the arc-shaped curled edges of the curled strips of the left and right hand-held beams can be prevented from being flattened in the punching process, the strength of the hand-held beam can be prevented from being reduced, and the function of reinforcing ribs can be prevented from being lost;

6) the portable part processing device is arranged in the front and back portable beam forming, the function is the same as the function in the 5), in addition, a bending die matched with the bending arc radius of the curled metal strip is arranged on the die behind the punching dies of the portable parts of the front and back portable beams, the bending die can carry out further shaping, and simultaneously, the original linear state can be prevented from being returned again;

7) the end parts of the left and right hand-held beams and the front and rear hand-held beams are provided with the hemming flattening dies, so that the tight combination between the end parts of the left and right hand-held beams and the front and rear hand-held beams and the side edge of the dustpan or the hand-held parts of the left and right hand-held beams can be ensured;

8) the hand-held arc bending device is arranged, particularly the end part of an air lever of the bending cylinder is connected with a rack through a connecting strip, a rotating shaft end gear of the arc bending device is meshed on the rack, the hand-held arc bending device can drive a pressing device fixing plate and a bending roller to rotate simultaneously under the driving of the cylinder, a pressing cylinder fixed on the pressing device fixing plate can drive the pressing roller to press a hemming metal strip positioned between the bending roller and the pressing roller to rotate around the bending roller by taking the rotating shaft as an axis, and the hemming metal strip is bent while rotating; the left and right hand-held beams are bent in an arc shape from the horizontal position for 180 degrees, and then are opened for a certain angle by the elasticity of the turned edge metal strip, and the front and rear hand-held beams can only be bent for a short part due to the short arc bending length;

9) the lifting and discharging device is arranged between the end part processing device and the portable end part processing device, and the two forks are arranged in the lifting and discharging device, so that on one hand, the metal strips are turned into edges after the left and right hand-held beams are bent and enter the two forks arranged in the lifting and discharging device, the lifting of the left and right hand-held beams or the front and rear hand-held beams which are bent parts in the two forks originally is facilitated, and the lifting of the bent parts is facilitated; the left and right hand-held beams or the front and rear hand-held beams after being formed are lifted to a certain height by the lifting part and then pushed to the forefront of the conveying direction of the metal plate, and the lifting guide rail and the lifting part are arranged on the lifting and discharging device, so that the lifting part is favorable for being vertically above the lifting guide rail, and the left and right hand-held beams or the front and rear hand-held beams form an inclined gliding angle;

10) the bottom parts of the end part processing device, the portable part processing device and the portable part arc-shaped bending device are respectively provided with a sliding device in the direction vertical to the advancing direction of the metal strip, the sliding devices can slide under the driving of respective sliding cylinders, specifically, the corresponding processing devices in the processes of cutting, punching and bending the metal strip are positioned along the metal strip, when the metal strip needs to be bent, the portable part processing device slides to the position along the metal strip to be bent, and meanwhile, the corresponding end part processing device and the portable part arc-shaped bending device in the processes of cutting, punching and bending are withdrawn from the position along the metal strip.

The production line can enable the structures between the hand-held beam of the dustpan and the side edge of the dustpan to be mutually matched, further improve the production efficiency of the dustpan, reduce the production cost of the dustpan, improve the market share of the dustpan in market competition, and realize automatic production of traditional handmade products.

Drawings

Fig. 1 is a schematic front view of a portable beam production line.

Fig. 2 top view of a metal strip hemming device.

FIG. 3 is a schematic view showing a variation of an upper roller and a lower roller of a plurality of rollers and a metal strip.

Fig. 4 is a schematic front structure view of the left and right portable beam end processing device.

Fig. 5 is a schematic side structure view of the left and right portable beam end processing device.

Fig. 6 is a schematic structural view of a lower mold in the left and right portable beam end processing device in a plan view.

Fig. 7 is a front structure schematic diagram of the left and right portable beam portable part processing device.

Fig. 8 is a schematic view of the end face structure of the left and right portable beam portable part processing device.

Fig. 9 is a schematic view of the bottom view of the upper mold of the portable part processing device of the left and right portable beams.

Fig. 10 is a front structural schematic view of the front and rear portable beam end processing device.

Fig. 11 is a schematic side view of the front and rear portable beam end processing device.

Fig. 12 is a schematic structural view of a lower mold in the front and rear portable beam end processing device in a plan view.

Fig. 13 is a front view of the front and rear portable beam hand-held portion processing device.

Fig. 14 is a schematic structural view of the end face of the front and rear portable beam hand-held portion processing device.

Fig. 15 is a schematic view of the bottom view of the upper mold in the front and rear portable beam portable part processing device.

Fig. 16 is a schematic front view of a handle bow.

Fig. 17 is a schematic view of the rear end face structure of the carrying section arc bending apparatus.

Fig. 18 is a schematic front view of the lift-off device.

Fig. 19 is a side view of the lift-off device.

Fig. 20 is a product structure schematic diagram of the left and right hand beams.

Fig. 21 is a schematic product structure diagram of a front and rear handle.

FIG. 22 is a schematic view showing a structure in which a left and right handle bar and a front and rear handle bar are combined with a dustpan.

Description of the reference numerals 10-metal strip, 11-metal strip spreading device, 12-metal strip hemming device, 13-end processing device, 14-hand-held portion processing device, 15-hand-held portion arc bending device, 16-lifting unloading device, 17-control cabinet, 18-frame, 19-hemming gear, 20-hemming metal strip, 21-sprocket, 22-chain, 23-roller shaft, 24-roller shaft bearing, 25-servo motor, 26-speed reducer, 27 a-upper roller, 27 b-lower roller, 28-side plate, 29-frame surface, 29 a-processing device fixing bolt, 30 a-pressing guide rod, 30 b-pressing guide pipe, 31 a-upper die holder, 31 b-lower die holder, 32 a-upper die plate, 32 b-lower template, 33-support column, 34 a-guide column, 34 b-guide sleeve, 35-oil cylinder, 35 a-oil cylinder end face, 35 b-oil cylinder rod, 36-rubber block, 37-support block, 38-slag hole, 39-sliding device, 39 a-sliding seat, 39 b-sliding rail, 40-workpiece hold-down plate, 41-bending part, 41 a-bending upper die, 41 b-bending lower die, 42 a-shearing upper die, 42 b-shearing lower die, 43 a-end punching punch, 43 b-end punching lower die, 43 c-hand-held part punching punch, 43 d-hand-held part punching lower die, 43 e-same-direction hole, 43 f-vertical direction hole, 44 a-upper position limiter, 44 b-lower position limiter, 45-through groove, 46 a-two-way bend, 46 b-one-way bend, 47-edge bend, 48-edge, 49 a-crimp upper die, 49 b-edge crimp lower die, 50-bend cylinder, 51-rack, 52 a-moving guide rail, 52 b-guide rail slide way, 53-connecting bar, 54-shaft end gear, 55-bearing drum, 55 a-drum inner bearing, 55 b-drum base, 56-slide cylinder, 57-cylinder support plate, 60-press cylinder, 60 a-double rod, 60 b-guide rod, 61-fixing plate, 62-press roller, 62 a-groove, 63-bend roller, 64-rotating shaft, 66-extension cylinder, 67 a-lifting part, 67 b-lifting guide rail, 68-two forks, 69 a-left and right hand beams, 69 b-front and rear hand beams, 70-dustpan body.

Detailed Description

The following describes a specific embodiment of the present invention with reference to the drawings.

In the following description, the metal strip in the production line in the figures is processed from right to left, the apparatus diagram viewed from right to left facing the production line is hereinafter referred to as a front schematic diagram, the end view viewed standing on the right side and the rear end view viewed standing on the left side.

The technical scheme of the utility model is that: a production line of a metal dustpan handle, and figure 1 is a schematic front view of the production line of the handle. The metal dustpan handle comprises a frame 18, a frame panel 29 and a metal strip 10 are arranged on the frame 18, the metal dustpan handle comprises a left hand-held beam, a right hand-held beam 69a, a front hand-held beam 69b and a rear hand-held beam 69b, a metal strip unfolding device 11, a metal strip hemming device 12, an end part processing device 13, a hand-held part processing device 14 and a hand-held part arc bending device 15 are arranged in a production line of the metal dustpan handle, detachable dies are arranged in the end part processing device 13 and the hand-held part processing device 14, when the left hand-held beam 69a, the right hand-held beam 69a, the front hand-held beam 69b and the rear hand-held beam 69b are formed, the end part processing device 13 and the hand-held part processing device 14 are only required to be replaced by the respective dies, the metal strip hemming device 12, the hand-held part arc bending device 15 and a lifting and discharging device 16 in, the lower part of the portable part arc bending device 15 is respectively provided with a sliding device 39 with the sliding direction vertical to the length direction of the metal strip, when the end part processing device 13 and the portable part processing device 14 process the metal strip 10, the portable part arc bending device 15 leaves the metal strip along the sliding direction of the sliding device 39, on the contrary, when the portable part arc bending device 15 processes the metal strip 10, the end part processing device 13 and the portable part processing device 14 leave the metal strip along the sliding direction of the sliding device, a controller and a touch display screen are arranged in the production line, and the lengths and various parameters of the left hand beam, the right hand beam, the front hand beam, the rear hand beam and the left hand beam are input from the display screen.

The end processing device 13 and the portable part processing device 14 are provided on the frame panel 29, and the end processing device 13, the portable part processing device 14, and the frame panel 29 are fixed by a processing device fixing bolt 29 a.

The sliding device 39 comprises a sliding seat 39a and a sliding rail 39b, a sliding cylinder 56 is connected to the sliding rail 39b in the moving direction, a sliding cylinder 57 is a cylinder supporting plate of the sliding cylinder 56, and the sliding seat 39a and the sliding rail 39b are closely matched with each other.

The production line is provided with a controller and a display screen, and the lengths of the left and right hand-held beams 69a and the front and rear hand-held beams 69b and various parameters are input from the display screen.

The front side of the production line is provided with a control cabinet, a controller of the production line, a controller of the servo motor 25, a circuit breaker and the like are arranged in the control cabinet 17, a touch screen display is connected to the controller, and various parameters including the length of the hemming metal strip 20 can be set through the touch screen display.

In the embodiment, a hydraulic station is additionally provided, and the hydraulic station is respectively connected to the oil cylinders arranged in the end part processing device 13 and the portable part processing device 14 through hydraulic pipelines, so that the stamping capability is improved, and the processes of cutting, punching, bending, low-flattening of the metal plate edge curling and the like can be simultaneously carried out in one set of dies.

In the embodiment, a compressor for compressing gas is also arranged, and the compressed gas is connected with elements such as a cylinder through an electromagnetic valve and the like to realize automation of various processing actions of the equipment under the control of a controller, wherein the controller is a P L C controller of the Japan ohm Long company, and the controller signal is model number CP 1E-N30 DT-A.

The hydraulic station and compressor are convenient for use in small plants without hydraulic systems and compressed air, and if the plants are large plants, the existing compressed gas and hydraulic systems can be utilized.

In addition, in order to prevent the deviation of the strip, stoppers for preventing the running over are provided at the left and right sides of the inlets of the curled metal strip 20 of the end processing device 13 and the portable part processing device 14, and the stoppers may be rolling wheels, rollers or limit plates.

Fig. 2 is a plan view of the metal strip hemming device 12. Fig. 3 is a schematic view showing a variation of the upper roller 27a and the lower roller 27b of the plurality of rollers and the metal strip. The metal strip curling device 12 comprises a plurality of paired curling rollers, each pair of curling rollers are arranged along the vertical direction, the paired curling rollers comprise an upper roller 27a and a lower roller 27b, the plurality of upper rollers 27a and the lower rollers 27b are respectively arranged along the horizontal direction, two end parts of roller shafts 23 of the plurality of paired rollers are rotatably arranged on a pair of side plates 28, roller shaft bearings 24 are arranged between the side plates 28 and the roller shafts, the paired rollers arranged in the vertical direction on the inner sides of the side plates 28 are mutually meshed by using curling gears 19, one end of the roller shaft 23 of the upper row or the lower row of rollers in the plurality of paired rollers extends to the outer side of the side plate 28 on the same side, each roller shaft 23 on the outer side of the side plate 28 is provided with a pair of chain wheels 21, the chains 22 on the pair of chain wheels 21 connect the upper row or the lower row of rollers together, at, the rollers at the two ends of the plurality of pairs gradually bend the two sides of the horizontally driven metal strip 10 to the inner side of the metal strip 10 to form a curled edge 48 with a semicircular structure in the rolling process.

Referring to fig. 3, in the present embodiment, a total of six pairs of rollers are provided, and the upper and lower rollers 27a and 27b of the six pairs of rollers are engaged with each other, and the six pairs of rollers have different shapes, respectively, and in the six pairs of rollers, the two sides of the metal strip 10 are gradually bent upward from the two sides by the shape of the metal strip 10 after the rolling process each time, and then are curled inward to form the semicircular beads 48.

The end processing device 13 and the portable part processing device 14 in the production line of the metal dustpan handle comprise an upper die holder 31a and a lower die holder 31b, the upper die holder 31a and the lower die holder 31b are fixed by a support pillar 33, an oil cylinder 35 is arranged on the upper die holder 31a, an oil cylinder end face is 35a, an oil cylinder rod is 35b, the end of the oil cylinder rod 35b penetrates through the upper die holder 31a and is connected to an upper die plate 32a, a workpiece pressing plate 40 is arranged below the upper die plate 32a, a pressing guide rod 30a in the vertical direction is arranged on the workpiece pressing plate 40, a pressing guide pipe 30b is arranged on the upper die plate 32a, a space for processing the processing die is arranged on the inner periphery of the workpiece pressing plate 40, when the workpiece pressing plate 40 presses a workpiece, the pressing guide rod 30a extends upwards along the pressing guide pipe 30b under the action of pressure, a plurality of guide columns 34a and guide sleeves 34b which are matched with each other are respectively arranged, an elastic rubber block 36 is arranged between the workpiece pressing plate 40 and the upper die plate 32a, and a lifting height limiter is arranged behind the upper die 32a and comprises an upper limiter 44a and a lower limiter 44 b.

In this embodiment, the rubber block 36 is made of high density polyethylene.

Fig. 4 is a front view of the end processing device 13 for the left and right hand beams 69a, fig. 5 is a side view of the end processing device 13 for the left and right hand beams 69a, and fig. 6 is a top view of the lower mold of the end processing device 13 for the left and right hand beams 69 a. The end processing device 13 of the left and right hand beams 69a is provided with a die which comprises a shearing die, two sides of the shearing die are symmetrically provided with a punching die, a bending die and an end curling and flattening die from near to far in sequence, the punching die is provided with a plurality of end punching dies, the arrangement direction of the end punching dies is vertical to the length direction of the metal strip, the upper template 32a is provided with a bending upper die 41a, a shearing upper die 42a, an end punching punch 43a and an end curling and flattening upper die 49a, the lower template 32b corresponding to the upper template 32a is provided with a bending lower die 41b, a shearing lower die 42b, an end punching lower die 43b and an end curling and flattening lower die 49b, the axial direction of the circular arc of the bending die is vertical to the length direction of the metal strip 10, two sides below the lower template 32b are arranged on supporting blocks 37, and a slag outlet 38 is arranged between the, the supporting block 37 is disposed on the lower die holder 31b, and the arc of the bending die is equal to the circular edge and the outer circle formed by the upper edge of the dustpan body 70.

Fig. 10 is a front view of the end processing device 13 for the front and rear hand beams 69b, fig. 11 is a side view of the end processing device 13 for the front and rear hand beams 69b, and fig. 12 is a top view of the lower mold of the end processing device 13 for the front and rear hand beams 69 b. The end processing device 13 of the front and rear hand beams 69b is provided with a die which comprises a shearing die, the two sides of the shearing die are symmetrically provided with a bending die and an end curling and flattening die, a punching die is arranged between the shearing die and the bending die in front of the shearing die in the conveying direction of the metal strip 10, the punching die comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is vertical to the length direction of the metal strip 10, a bending upper die 41a, a shearing upper die 42a, a plurality of end punching punches 43a or a portable part punching punch 43c and a handheld part or end curling and flattening upper die 49a are arranged on an upper die plate 32a, a bending lower die 41b, a shearing upper die 42b, a plurality of end punching lower dies 43b or a portable part punching lower die 43d, a portable part and an end curling and flattening lower die 49b are arranged on a lower die plate 32b corresponding to the upper die plate 32, the axial direction of the arc of the bending die is perpendicular to the length direction of the metal strip 10, the length of the sheared curled metal strip 20 is equal to that of the handle beam in the front-back direction, in the advancing direction of the metal strip 10, the bending arc positioned at the front side of the shearing die is the same as the circular edge arc formed by the upper edge of the dustpan main body 70, and the bending arc positioned at the rear side of the shearing die is the same as the peripheral arc of the curled edge 48 of the curled metal strip 20.

Fig. 7 is a schematic front view of the left and right hand bars 69a portable part processing device 14, fig. 8 is a schematic end view of the left and right hand bars 69a portable part processing device 14, and fig. 9 is a schematic bottom view of the upper mold of the left and right hand bars 69a portable part processing device 14. The portable part processing device 14 of the left and right portable beams 69a is provided with a plurality of dies including punching dies, the arrangement direction of the plurality of punching dies is consistent with the length direction of the metal strip 10, the distance between the plurality of punching dies is equal to that between the punching dies in the end processing device 13, the upper die plate 32a is provided with a portable part punching punch 43c, the lower die plate 32b is provided with a portable part punching lower die 43d, in the portable part processing device 14, in the length direction of the metal strip 10, the upper die and the pressing plate are provided with two through grooves 45 consistent with the conveying direction of the metal strip 10, and the shapes of the through grooves 45 are consistent with the shapes of the curled edges 48 at two sides of the metal strip 10.

Fig. 13 is a schematic front view of the front and rear carrying bar 69b carrying unit 14, fig. 14 is a schematic end view of the front and rear carrying bar 69b carrying unit 14, and fig. 15 is a schematic bottom view of the upper mold of the front and rear carrying bar 69b carrying unit 14. Be provided with the mould in front and back handle 69 b's portable portion processingequipment 14, the mould includes cut-out press and tip turn-up flattening die, the cut-out press is a plurality of, a plurality of cut-out press arrangement directions are perpendicular with metal strip 10 direction of transfer, be provided with portable portion punching punch 43c and portable portion turn-up flattening upper die 49a on the cope match-plate pattern 32a, be provided with portable portion punching lower mould 43d and tip turn-up flattening lower mould 49b on the lower bolster 32b, in portable portion processingequipment 14, in the direction of advance of metal strip 10, be located and be provided with on the mould behind the cut-out press with the matched bending die of the arc shape of bending on the turn-up metal strip 20, namely: the upper template 32a is provided with a bending upper die 41a, the lower template 32b is provided with a bending lower die 41b, and the axial direction of the arc of the bending die is perpendicular to the direction of the metal strip 10.

Fig. 16 is a schematic front view of the hand grip bow 15, and fig. 17 is a schematic rear view of the hand grip bow 15. The arc bending device of the hand-held part comprises a bending cylinder 50, a rack 51 with upward teeth is connected to the cylinder rod end of the bending cylinder 50, 53 is a connecting strip for connecting the end of the cylinder rod of the bending cylinder and the end of the rack 51, a shaft end gear 54 of a rotating shaft 64 is meshed on the rack 51, a rack 51 moving guide rail 52a is arranged below the rack 51, the moving guide rail 52a and a guide rail slideway 52b are matched with each other, a fixing plate 61 and a bending roller 63 of a pressing cylinder 60 are arranged at the other end of the rotating shaft 64, a bearing rotating cylinder 55 is arranged in the middle of the rotating shaft 64, a cylinder inner bearing 55a is a cylinder base of the bearing rotating cylinder 55, a pressing cylinder 60 is fixed on the side surface of the fixing plate 61 of the pressing device, a pressing roller 62 is arranged at the end of the pressing cylinder 60, the periphery of the pressing roller 62 faces the periphery of the bending roller 63, the pressing, meanwhile, the pressing roller 62 is driven by the pressing cylinder to move radially on the periphery of the bending roller 63, a groove 62a which has the same width and the same shape as the curled metal strip 20 is formed on the periphery of the pressing roller 62, and the fixing plate 61, the pressing cylinder 60 and the pressing roller 62 of the pressing device rotate along with the rotating shaft 64.

In the present embodiment, the pressing cylinder 60 is a double rod cylinder having two cylinder rods, wherein 60a is a double rod and 60b is a guide rod during the expansion and contraction of the cylinder.

Fig. 18 is a schematic front view of the lift-and-dump device 16, and fig. 19 is a schematic side view of the lift-and-dump device 16. The lifting and discharging device 16 is arranged between the end part processing device 13 and the processing device of the handheld part, the lifting and discharging device 16 is provided with an upward extending cylinder, the end part of the upward extending cylinder is provided with a lifting part 67a which lifts along a lifting guide rail 67b, two forks 68 with the same width as the curled metal strip 20 are arranged on two sides above the lifting part 67a, and the curled metal strip 20 is positioned in the two forks 68.

The bottom parts of the end processing device 13, the portable part processing device 14 and the portable part arc bending device 15 are respectively provided with a sliding device 39 with the sliding direction perpendicular to the advancing direction of the metal strip 10, each sliding device 39 is connected with a sliding cylinder 56, and the end processing device 13, the portable part processing device 14 and the portable part arc bending device 15 slide alternately to deviate or slide into the position of the conveyed metal strip.

Fig. 20 is a schematic view showing a product structure of the left and right hand rails 69a, fig. 21 is a schematic view showing a product structure of the front and rear hand rails 69b, and fig. 22 is a schematic view showing a structure in which the left and right hand rails 69a, the front and rear hand rails 69b are combined with a dustpan.

The both-sided hems 48 of the metal strip are formed on the right and left hemmed metal strips 20 by the strip hemming device 12, the holes 43e in the same direction as the longitudinal direction of the metal plate are formed on the hemmed metal plate 20 by the end processing device 13 and the portable part processing device 14, and the holes 43f in the vertical direction perpendicular to the longitudinal direction of the metal plate are formed, the press bending part 41 matching with the round edge of the upper edge of the dustpan body 70, the hemming bending part 47 matching with the hemming 48 of the hemming metal sheet 20, the two-way bending part 46a is formed on the left and right hand beams 69a by the handle arc bending device 15, the front and rear carrying handles 69b have one-way bent portions 46b at their front ends, the one-way bent portions 46b having vertical holes 43f formed therein and perpendicular to the rolled metal strip 20, the vertical holes 43f and the two-way bent portions 46a being aligned in the same direction as the longitudinal holes 43e of the metal strip 20; the vertical direction holes 43f at both ends of the two-way bending portion 46a are fitted into the openings at both sides of the dustpan body 70, and both end portions of the left and right hand beams 69a and the end portion of the front and rear hand beams 69b at the rear side (lower side in the use state) of the shearing mold in the processing state are fixedly connected to both sides and the rear side of the dustpan body 70 by rivets in an off-line apparatus, respectively, to form a sorghum dustpan for use in a standing state, or a low-beam hand dustpan can be formed by setting the length to a short distance as required.

The controller used in this embodiment is a P L C controller from ohilong corporation of japan, the controller signals are model number CP 1E-N30 DT-a, built-in RS232C and USB interface, program capacity is 8K steps, AC100-240V, 18-point input, 12-point relay output.

Although the left and right hand beams 69a and the front and rear hand beams 69b are produced on the same production line by replacing the molds in the end processing device 13 and the hand processing device 14, respectively. Of course, the production lines of the left and right hand beams 69a and the front and rear hand beams 69b may be provided, and the metal strip spreading device 11, the metal strip hemming device 12, the end portion processing device 13, the hand portion processing device 14, and the hand portion bending device 15 may be provided in the production lines, respectively.

The specific product processing implementation steps are as follows:

1. assembling the metal strip 10 to a metal strip uncoiling device 11 and extending the strip to a metal strip hemming device 12;

2. starting the apparatus, advancing the metal strip 10 in the manual mode until the front end reaches the position of the end-working device 13, carrying out the first shearing;

3. the manual switching is automatically carried out, the servo motor 25 starts to count, and the following processing is automatically carried out in sequence in each device in the production line:

1) the metal strip hemming device 12:

carrying out edge curling on two sides of the metal plate by utilizing respective rollers at A, B, D, E, F, G six stations;

2) end portion processing device 13:

bending, shearing, punching and hemming and flattening the hemming metal plate, wherein the left and right hand beams 69a are symmetrically punched, bent and hemmed on two sides of the shearing part; the front and rear hand beams 69b are symmetrically subjected to press bending and end curling flattening at both sides of the cut portion, and subjected to single-side punching between the cut portion and the press bending portion at the side after cutting;

3) the portable unit processing device 14:

punching, bending, shaping and curling the curled metal plate, wherein the left and right hand-held beams 69a only perform punching processing in which the punching arrangement direction is consistent with the advancing direction of the curled metal plate; the front and rear hand beams 69b are subjected to punching and hemming flattening processing in a direction perpendicular to the punching arrangement direction and the hemming metal sheet advancing direction, and the press bending of the front end portion is corrected;

4) and a hand-held part arc bending device 15:

carrying out the arc bending of the carrying part at the center position of the left and right carrying beams 69 a; the half-arc bending of the carrying portion is performed to the carrying portion end portions of the front and rear carrying beams 69 b;

5) lifting and discharging device 16:

lifting one side (rear end) of a hand-held beam bent by the arc-shaped bending device 15 of the hand-held part to make the hand-held beam slide to the foremost end of the moving direction of the hemming metal plate of the production line;

4. The dustpan body 70 and the metal plate are riveted off-line.

The utility model discloses have following positive effect:

1) the metal strip material 10 curling device is arranged in the production line of the metal dustpan handle, so that two sides of the metal strip material 10 can be rolled into a smooth arc structure, the hands can be prevented from being scratched in the use process of the dustpan, the strength of the metal strip material 10 is improved, and the curled edge plays a role of a reinforcing rib; by arranging a plurality of wheels in the metal strip 10 hemming device, the two sides of the strip can be bent upwards and outwards firstly in the rotation of the rollers, then the edge bending parts are gradually upwards, the edge parts are bent towards the inner side of the strip, and finally the edge parts of the strip are bent towards the inner lower side, so that the upper edges of the two sides of the metal strip 10 are rolled into a semicircular state;

2) the oil cylinders 35 are arranged in the end part processing device 13 and the hand-held part processing device of the curled metal strip 20, so that the stamping pressure can be improved, multiple processes of shearing, bending and punching can be simultaneously carried out in the one-time descending process, the arrangement of processing stations and processing dies can be reduced, and the processing efficiency is improved; the lifting height limiters are arranged on the back surfaces of the upper die plates of the end part processing device 13 and the portable part processing device 14, so that the lifting height of the upper die can be detected, a signal of the lifting in place of the stamping die can be detected, the overtravel of the lifting height in stamping can be prevented, the damage of relevant equipment of the die can be prevented, meanwhile, the limiters can be used for feeding back signals to the controller, and the controller can instruct the next action; by arranging the rubber block 36 between the workpiece pressing plate 40 and the upper die plate 32a, the rubber block 36 can be compressed by pressure during downward stamping, an upper die processing die extends out of the rubber block 36 to punch or shear a product, and meanwhile, the traditional workpiece pressing plate 40 also plays a role in supporting the workpiece pressing plate by a spring;

3) by providing the end portion processing device 13, particularly a cutting die, in the molding of the left and right hand beams 69a, the position for cutting the curled metal strip can be determined according to the moving length by the servo motor 25, so that the hand beams in the left and right directions or the front and rear hand beams can be cut according to the set length, by providing a punching die in the end portion processing device 13 of the hand beam in the left and right directions, and punching the end portion of the hand beam by the end portion punching punch 43a, the hand beam can be fixed with the corresponding hole on the dustpan by a rivet; by arranging the bending upper die 41a in the handle end processing device 13 in the left-right direction, the bending portion and the circular edge of the upper edge of the dustpan body 70 can be matched with each other, and the riveting processing is performed in a tightly combined state, so that the rivet can be prevented from loosening in the long-term use process, and the product quality can be ensured, of course, the upper die needs to be closely matched with the bending lower die 41b, the shearing lower die 42b and the end punching lower die 43b which are arranged on the lower die plate 32b of the die, and the processing can be completed;

4) an end processing device 13 is provided in the front and rear handle 69b molding, and the operation thereof is the same as that described in 3), but no punching die is provided at the upper end portion (behind the shearing die) of the front and rear handle 69 b; this is because the rear end portion of the cutting die of the front and rear hand rails 69b (from the description of the processing horizontal conveyance angle: above the hand rails) is fixed to the middle portion of the hand rails in the left-right direction, and the punching direction of the middle portion coincides with the longitudinal direction of the metal strip 10, and the processing at this position can be completed in the hand rail processing device 14 in the front and rear hand rail 69b forming line;

5) the left and right hand-held beams 69a are formed by the hand-held part processing device 14, so that rivet punching can be processed and fixed at the upper ends of the left and right hand-held beams 69a at the hand-held part, and the left and right hand-held beams 69a and the front and rear hand-held beams 69b can be fixed at the hand-held part; through the through grooves 45 matched with the curling arcs of the metal strip 10 are arranged on the dies at the same intervals on the two sides of the hand-held part punching punch 43c, the arc-shaped curling edges of the curling strips of the left and right hand-held beams 69a can be prevented from being flattened in the punching process, the strength of the hand-held beams can be prevented from being reduced, and the function of reinforcing ribs can be prevented from being lost;

6) the same effect as described in 5) is obtained by providing the carrying portion processing device 14 in the front and rear carrying bar 69b forming process, and by providing the bending die and the through groove 45 communicating in the left-right direction in correspondence with the bending radius of the curled metal strip 20 on the die behind the punching die at the carrying portion position of the front and rear carrying bars 69b, the bending die can be further shaped while preventing the original straight state from being returned again;

7) by providing the hemming-flattening dies at the end portions of the left and right hand beams 69a and the front and rear hand beams 69b, the tight coupling between the end portions of the left and right hand beams and the front and rear hand beams and the dustpan side or the carrying portion of the left and right hand beams 69a can be secured, but the hemming-flattening of the carrying portion is not required at the carrying portion of the left and right hand beams 69a because the carrying portion of the front and rear hand beams 69b corresponding thereto (i.e.: the upper end part) is provided with a flattening die matched with the handle parts of the left and right hand-held beams and a bending die matched with the turned edge;

8) the handheld arc bending device 15 can drive the pressing device fixing plate 61 and the bending roller 63 to rotate simultaneously by arranging the handheld arc bending device 15, particularly connecting the rack 51 at the end part of the air lever of the bending cylinder 50 by using the connecting strip 53, and the rack 51 is meshed with the shaft end gear 54 of the rotating shaft 64 of the arc bending device, and the pressing cylinder fixed on the pressing device fixing plate 61 can drive the pressing roller 62 to press the hemming metal strip 20 positioned between the bending roller 63 and the pressing roller 62 to rotate around the bending roller 63 by taking the rotating shaft 64 as an axis, so that the hemming metal strip 20 is bent while rotating; the left and right hand-held beams are bent in an arc shape from the horizontal position by 180 degrees, and then are opened for a certain angle by the elasticity of the turned-edge metal strip 20, and the front and rear hand-held beams can only be bent for a short part due to the short arc bending length;

9) by arranging the lift-and-unload device 16 between the end-processing device 13 and the portable end-processing device 14 and the two forks 68 provided in the lift-and-unload device 16, on one hand, the curled metal strip 20 after bending the left and right hand beams 69a can be conveniently fed into the two forks 68 provided in the lift-and-unload device 16, which is not only beneficial to lifting the left and right hand beams 69a or the front and rear hand beams 69b which are originally positioned in the two forks 68 and are bent portions, but also beneficial to lifting the bent portions; the left and right hand beams 69a or the front and rear hand beams 69b after molding are lifted to a certain height by the elevation of the elevation part 67a and then pushed to the foremost position in the sheet metal conveying direction, and the elevation guide 67b and the elevation part 67a are provided in the elevation discharge device 16, so that the elevation part 67a is vertically upward along the elevation guide 67b, and the left and right hand beams 69a or the front and rear hand beams 69b are formed with an inclined downward sliding angle;

10) the end processing device 13, the portable part processing device 14 and the portable part arc bending device 15 are respectively provided with a sliding device 39 in the direction perpendicular to the advancing direction of the metal strip at the bottom, the sliding devices can slide under the driving of the respective sliding cylinders 56, specifically, the corresponding processing devices can be positioned along the metal strip in the processes of cutting, punching and bending the metal strip, when the bending is needed, the portable part processing device 14 slides to the line of the metal strip to bend, and simultaneously the corresponding end processing device 13 and the portable part arc bending device 15 in the processes of cutting, punching and bending are withdrawn from the line of the curled metal strip 20.

Claims

1. The utility model provides a production line of metal dustpan portable beam, includes the metal strip, its characterized in that: the portable beam comprises a left portable beam, a right portable beam, a front portable beam, a rear portable beam, a metal strip unfolding device, a metal strip curling device, an end processing device, a portable part arc bending device and a lifting discharging device, wherein the end processing device and the portable part processing device are provided with detachable dies, the end processing device and the portable part processing device are provided with a controller and a touch display screen, the lengths and various parameters of the left portable beam, the right portable beam, the front portable beam, the rear portable beam and the front portable beam are input from the display screen in the forming process of the left portable beam, the right portable beam, the front portable beam and the rear portable beam, the end processing device and the portable part processing device are respectively provided with a sliding device with the sliding direction vertical to the length direction of the metal strip, the processing of the end processing device and the portable part processing device and the processing of the portable part arc bending device are respectively and alternately input into the end processing device and the portable part processing device And one of the workpieces is separated from the metal strip along the slide device.

2. The production line of the metal dustpan handle according to claim 1, characterized in that: the metal strip curling device comprises a plurality of paired curling rollers, two end parts of roller shafts of the paired rollers are rotatably arranged on a pair of side plates, the pair of rollers arranged in the up-down direction on the inner side of the side plates are meshed with each other through curling gears, one end of the roller shaft of the upper row or the lower row of rollers extends to the outer side of the side plate on the same side, a pair of chain wheels is arranged on each roller shaft on the outer side of the side plates, the upper row or the lower row of rollers are connected together through chains on the pair of chain wheels, at least one roller shaft is connected with a servo motor and a speed reducer, and the rollers at two ends of the paired rollers gradually bend two sides of a horizontally-driven metal strip into curled edges with semicircular structures towards the inner side of the.

3. The production line of the metal dustpan handle according to claim 1, characterized in that: the end part processing device and the portable part processing device in the production line of the metal dustpan handle beam comprise an upper die base and a lower die base, the upper die base and the lower die base are fixed through support columns, an oil cylinder is arranged on the upper die base, the end part of a rod of the oil cylinder penetrates through the upper die base to be connected to an upper die plate, the lower part of the upper die plate is arranged on a workpiece pressing plate, a plurality of guide columns and guide sleeves which are matched with each other are respectively arranged between the workpiece pressing plate and the upper die plate, an elastic rubber block is arranged between the workpiece pressing plate and the upper die plate, and a lifting height limiter is arranged at the.

4. The production line of the metal dustpan handle according to claim 1, characterized in that: the end part processing device of the left and right hand-held beam is provided with a die which comprises a shearing die, wherein the two sides of the shearing die are sequentially and symmetrically provided with a punching die, a bending die and an end part curling and flattening die from near to far, the punching die comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is vertical to the length direction of a metal strip, and the circular arc of the bending die is equal to the radius of the outer circle of the circular edge formed on the upper edge of the dustpan main body.

5. The production line of the metal dustpan handle according to claim 1, characterized in that: the end part processing device of the front and rear portable beams is provided with a die, the die comprises a shearing die, two sides of the shearing die are symmetrically provided with a bending die and an end part curling flattening die, a punching die is arranged between the shearing die and the bending die in front of the shearing die in the conveying direction of the metal strip, the punching die comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is vertical to the length direction of the metal strip, the length of the curled metal strip after shearing is equal to the length of the portable beam in the front and rear direction, the bending arc in front of the shearing die is the same as the circular arc formed at the upper edge of the dustpan main body in the advancing direction of the metal strip, and the bending arc at the rear of the shearing die is the same as the curling peripheral arc.

6. The production line of the metal dustpan handle according to claim 1, characterized in that: the portable part processing device for the left and right portable beams is characterized in that a die is arranged in the portable part processing device and comprises a plurality of punching dies, the arrangement direction of the plurality of punching dies is consistent with the length direction of a metal strip, the distance between the plurality of punching dies is equal to that between the plurality of punching dies in the end part processing device, two through grooves which are consistent with the transmission direction of the metal strip are arranged in the portable part processing device in the length direction of the metal strip, and the shapes of the through grooves are consistent with the curling shapes of two sides of the metal strip.

7. The production line of the metal dustpan handle according to claim 1, characterized in that: the portable part processing device of the front and rear portable beams is provided with a die, the die comprises a plurality of punching dies and a portable part curling and flattening die, the arrangement direction of the plurality of punching dies is vertical to the conveying direction of the metal strip, in the portable part processing device, in the length direction of the metal strip, a bending die matched with a bending arc on the curled metal strip is arranged on the die behind the punching dies, and the axial direction of the bending die is vertical to the direction of the metal strip.

8. The production line of the metal dustpan handle according to claim 1, characterized in that: the arc bending device of portable portion includes crooked cylinder, the cylinder rod end of crooked cylinder is connected with tooth rack up, the meshing has arc bending device's rotation axis axle head gear on the rack, the rack below is provided with rack removal guide rail, the other one end of rotation axis is provided with closing device fixed plate and crooked gyro wheel, be provided with the bearing rotary drum in the middle of the rotation axis, be fixed with compressing cylinder on closing device's the fixed plate side, compressing cylinder tip is provided with compressing roller, compressing roller periphery is towards the periphery of crooked gyro wheel, compressing roller rotates around crooked gyro wheel periphery, compressing roller periphery is provided with the recess that equals with turn-up metal strip width, closing device's fixed plate, compressing cylinder and compressing roller rotate along with the rotation axis.

9. The production line of the metal dustpan handle according to claim 1, characterized in that: the lifting and discharging device is arranged between the end portion processing device and the processing device of the portable portion, the lifting and discharging device is provided with an upward extending cylinder, the end portion of the upward extending cylinder is provided with a lifting portion which can lift along a lifting guide rail, two sides above the lifting portion are provided with two forks which are the same as the width of the turned-up metal strip, and the turned-up metal strip is located in the two forks.

10. The production line of the metal dustpan handle according to claim 1, characterized in that: the bottom parts of the end part processing device, the portable part processing device and the portable part arc-shaped bending device are respectively provided with a sliding device with a sliding direction perpendicular to the advancing direction of the metal strip, each sliding device is connected with a sliding cylinder, and the end part processing device, the portable part processing device and the portable part arc-shaped bending device slide alternately to deviate or slide into the position of the conveyed metal strip.