CN111745047A

CN111745047A - Automatic production line for refrigerator door decorative strips

Info

Publication number: CN111745047A
Application number: CN202010627262.6A
Authority: CN
Inventors: 韩超; 刘柱中; 黄喜洛; 徐爱姣
Original assignee: Zhengzhou Sanhuan Mould Co ltd
Current assignee: Zhengzhou Sanhuan Mould Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-10-09

Abstract

The invention provides an automatic production line for refrigerator door decoration strips, which comprises material tables arranged at the head end and the tail end, blanking cutting devices, bending forming devices, first bending devices, second bending devices and manipulators respectively arranged between the material tables and the devices, wherein the blanking cutting devices, the bending forming devices, the first bending devices and the second bending devices are stamping devices with corresponding dies, elastic positioning devices are arranged in the first bending devices and the second bending devices, and the material tables, the blanking cutting devices, the bending forming devices, the first bending devices, the second bending devices and the manipulators are all controlled by a master control box. The invention solves the problems of low automation degree of an automatic production line of the refrigerator door decorative strip, high rejection rate caused by manual operation errors, larger product precision error of rigid positioning production and low safety.

Description

Automatic production line for refrigerator door decorative strips

Technical Field

The invention relates to the technical field of refrigeration equipment part processing, in particular to an automatic production line for refrigerator door decorative strips.

Background

The door trim of the refrigerator door is used for protecting a refrigerating system of the refrigerator and beautifying the function of the refrigerator, the requirements on the precision and the appearance quality of the door trim of the refrigerator door in production are high, and a tiny dust on a material sheet can leave a visible indentation on a workpiece to cause the rejection of the workpiece.

The operation is carried out by manpower in the production process of the traditional refrigerator door trim, and various small errors inevitably occur, such as: scratch in the moving process of the surface of the workpiece, misplacement of the workpiece, dust on the hand, fatigue operation of workers and the like, which leads to increase of the rejection rate of the refrigerator door decorative strips; and the decorative strips of the refrigerator door are produced by manually operating single-process dies, and the taking and placing of workpieces are manually operated. The automation degree is low, the labor cost is high, and the method is not suitable for the modern production requirement.

In the refrigerator door trim production process, the work piece location of traditional mould is the rigidity location of fixed position mostly, the degree of accuracy of work piece location receives the unloading size of tablet and the normal degree influence of workman's operation, the door trim size precision error of producing is great, the rejection rate is high, in addition, the noise that produces during punching press production is great, cause the influence to the refrigerator door trim production work of manual operation, it is reversible and can make operation staff nervous system produce the suppression to staff hearing damage, greatly influence work efficiency.

The stamping production line mentioned in the chinese patent application CN201811310104.7 a stamping production line with double-station dies includes a plurality of stamping mechanisms, the opposite sides of the stamping production line are respectively provided with a feeding mechanism and a discharging mechanism, and the stamping mechanisms include stamping dies and manipulator transfer parts. Wherein increased the degree of automation and the production efficiency of production line through manipulator transfer part, but its specifically produced stamping die lacks the nimble elastic positioning to the work piece, and positioning accuracy is lower, and the specific structure of its mould is unclear, is not suitable for the specific production of refrigerator door trim.

Disclosure of Invention

The automatic production line aims at solving the problems that in the prior art, the automation degree of the automatic production line of the refrigerator door decorative strip is not high, the rejection rate is high due to manual operation errors, and the product produced by rigid positioning has large precision error and low safety. The invention provides an automatic production line for refrigerator door decoration strips.

An automatic production line for refrigerator door decoration strips comprises material tables arranged at the head end and the tail end, a blanking cutting device, a bending forming device, a first bending device, a second bending device and manipulators respectively arranged between the material tables and the devices, the blanking and cutting device, the bending and forming device, the first bending device and the second bending device are stamping devices with corresponding dies, elastic positioning devices are arranged in the first bending device and the second bending device, the material platform, the blanking cutting device, the bending forming device, the first bending device, the second bending device and the manipulator are all controlled by the master control box, the blanking cutting device cuts the material into blanks in length, the bending forming device enables the blanks to be in concave-convex dislocation and bent at two ends, and the first bending device and the second bending device form two right-angled forming bending for the blanks.

Further, blanking cutting device includes the punch press and sets up the cutting die in the punch press, cutting die is including cutting off the mould and cutting off the lower mould, it has set gradually last mounting panel, upper leg and cope match-plate pattern from top to bottom to cut off the mould, cuts off the lower mould and has set gradually lower mounting panel, lower leg and lower bolster by supreme down, be provided with respectively on cope match-plate pattern and the lower bolster two sets of upper and lower corresponding first orientation module and the second compress tightly orientation module, one of them first orientation module that compresses tightly is provided with the drift.

Further, bending forming device includes punch press and the shaping hem mould of setting in the punch press, shaping hem mould includes shaping hem last mould and shaping hem lower mould, the mould has set gradually upper mounting panel, upper leg and cope match-plate pattern on the shaping hem from top to bottom, and shaping hem lower mould has set gradually lower mounting panel, lower leg and lower bolster by supreme down, cope match-plate pattern middle part below be provided with the briquetting go up the briquetting top and be provided with nitrogen spring, the lower bolster top is provided with down the briquetting with last briquetting is corresponding, the briquetting both sides are provided with the demoulding piece down, the drawing of patterns piece outside is provided with the slide wedge, last briquetting bilateral symmetry below the cope match-plate pattern is provided with the side ejector pad, the contact surface of side ejector pad and slide wedge is the inclined plane of slide wedge.

Furthermore, the height of the side push block is greater than that of the upper press block, a spring module is arranged on the outer side of the side push block, and a right-angle edge, close to one side of the upper press block, of the side push block is subjected to smooth processing, and a right-angle edge, far away from one side of the upper press block, of the side push block is provided with a cutting angle matched with the inclined plane of the wedge.

Further, first device, the second device of bending all include the punch press and bend the mould, the mould of bending is including bending the mould and bend the lower mould, bend and go up the mould and include the mounting panel, set up cope match-plate pattern, the bearing frame and the last locating piece that set up in the cope match-plate pattern below and turn over the board with bearing frame articulated bending of upper mounting panel below through the extensible member, bend and turn over the board and articulated on the board and have the push rod, the push rod is articulated with the upper mounting panel, bend the lower mould including the lower locating piece of placing refrigerator door trim stock, be used for the elastic positioning device of refrigerator door trim stock plane location.

Further, elastic positioning device is by three group's location cylinders, set up a plurality of material cylinders and position sensor of taking off in the locating block under and constitute, three groups location cylinder equipartition is locating block one side under, take off material cylinder and location cylinder parallel arrangement and inlay and establish in the locating block under, position sensor embedding down in the locating block and its detect head portion upwards.

Further, the manipulator can perform grabbing and transferring actions in the left-right direction and the up-down direction.

Furthermore, the punching machines of the blanking cutting device, the bending forming device, the first bending device and the second bending device all act simultaneously, and all the mechanical arms also act simultaneously.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides an automatic production line for refrigerator door decorative strips, which is characterized in that through the arrangement of an automatic production line, the traditional manual material taking and placing is changed into the automatic production line for mechanical arm material taking, so that the labor cost is saved, the production efficiency of the refrigerator door decorative strips is greatly improved, the rejection rate is greatly reduced, and meanwhile, the safety of the automatic production process is effectively guaranteed;

the design of accurate positioning has all been done for automated production to mould structure and locate mode, the fine positioning of adopting a right angle limit and the activity elastic positioning of another right angle limit, the flexibility of positioning accuracy and location has been increased, the accuracy nature of blanking when guaranteeing refrigerator door trim production has guaranteed the product precision of refrigerator door trim production, the rejection rate has been reduced, wherein upload and the feedback with the signal after position sensor detects the billet, the location cylinder is fixed a position, accomplish this process production back and take off the material cylinder and release the billet.

Drawings

Fig. 1 is a schematic view of the overall structure of an automatic production line for refrigerator door trim according to the present invention.

Fig. 2 is a schematic structural view of a cutting die of an automatic line production machine for refrigerator door trim strips according to the present invention.

Fig. 3 is a schematic structural view of a forming flanging die of an automatic production line machine for refrigerator door trim according to the present invention.

Fig. 4 is a schematic structural diagram of an upper mounting plate and a lower mounting plate in a forming flanging die of an automatic production line machine for refrigerator door trim according to the present invention.

Fig. 5 is a schematic structural view of a bending die of a first bending device of an automatic production line machine for refrigerator door trim according to the present invention.

Fig. 6 is a schematic structural diagram of a structure between an upper mounting plate and a lower mounting plate of a bending die of a first bending device of an automatic production line machine for refrigerator door trim according to the present invention.

Fig. 7 is a schematic structural view of a bending die of a second bending device of an automatic production line machine for refrigerator door trim strips according to the present invention.

Fig. 8 is a schematic structural view of a structure between an upper mounting plate and a lower mounting plate of a bending die of a second bending device of an automatic production line machine for refrigerator door trim according to the present invention.

Fig. 9 is a schematic structural view of an elastic positioning device of an automatic line production machine for refrigerator door trim strips according to the present invention.

The reference numeral 1 is a material table, 2 is a mechanical arm, 3 is a punch press, 4 is an upper mounting plate, 5 is an upper support leg, 6 is an upper template, 7 is a lower mounting plate, 8 is a lower support leg, 9 is a lower template, 10 is a first pressing and positioning module, 11 is a second pressing and positioning module, 12 is a punch, 13 is a nitrogen spring, 15 is an upper pressing block, 16 is a lower pressing block, 17 is a stripping block, 18 is a wedge, 19 is a side pushing block, 20 is a spring module, 21 is a telescopic part, 22 is a bearing seat, 23 is an upper positioning block, 24 is a bending turnover plate, 25 is a lower positioning block, 26 is a stripping cylinder, 27 is a position sensor, 28 is a positioning cylinder, and 29 is a push rod.

Detailed Description

The invention will be further explained with reference to the following figures and specific examples:

as shown in figures 1-9, an automatic production line for refrigerator door decoration strips comprises material tables 1 arranged at the head and tail ends, a blanking cutting device, a bending forming device, a first bending device, a second bending device and manipulators 2 respectively arranged between the material tables 1 and the devices, wherein the blanking cutting device, the bending forming device, the first bending device and the second bending device are sequentially arranged between the two material tables 1, the blanking and cutting device, the bending and forming device, the first bending device and the second bending device are stamping devices with corresponding dies, elastic positioning devices are arranged in the first bending device and the second bending device, the material platform 1, the blanking cutting device, the bending forming device, the first bending device, the second bending device and the manipulator are all controlled by the master control box, the blanking cutting device cuts the material into blanks in length, the bending forming device enables the blanks to be in concave-convex dislocation and bent at two ends, and the first bending device and the second bending device form two right-angled forming bending for the blanks.

Specifically, blanking cutting device includes punch press 3 and the cutting off mould of setting in punch press 3, the cutting off mould is including cutting off the mould and cutting off the lower mould, it has set gradually upper mounting panel 4, upper leg 5 and cope match-plate pattern 6 from top to bottom to cut off the mould, cut off the lower mould and by supreme lower mounting panel 7, lower landing leg 8 and the lower bolster 9 of having set gradually down, be provided with respectively on cope match-plate pattern 6 and the lower bolster 9 two sets of upper and lower correspondences first compress tightly locating module 10 and second and compress tightly locating module 11, one of them first compress tightly and be provided with drift 12 on the locating module 10.

Bending forming device includes punch press 3 and the shaping hem mould of setting in punch press 3, shaping hem mould includes shaping hem last mould and shaping hem lower mould, the mould has set gradually upper mounting plate 4, upper leg 5 and cope match-plate pattern 6 from top to bottom on the shaping hem, and shaping hem lower mould has set gradually lower mounting plate 7, lower leg 8 and lower bolster 9 from lower supreme, 6 middle parts below of cope match-plate pattern is provided with briquetting 15, 15 tops of last briquetting are provided with

nitrogen spring

13, 9 tops of lower bolster and the corresponding briquetting 16 that is provided with of

last briquetting

15, 16 both sides of lower briquetting are provided with demoulding piece 17, the demoulding piece 17 outside is provided with

slide wedge

18, 15 bilateral symmetry of last briquetting below of cope match-plate pattern 6 are provided with side ejector pad 19, the contact surface of side ejector pad 19 and slide wedge 18 is the inclined plane of slide wedge 18.

The height of the side push block 19 is greater than that of the upper press block 15, the spring module 20 is arranged on the outer side of the side push block 19, the right-angle edge of the side push block 19, which is close to one side of the upper press block 15, is subjected to smooth processing, and the right-angle edge of the side push block, which is far away from one side of the upper press block 15, is provided with a cutting angle matched with the inclined plane of the wedge 18.

The first bending device and the second bending device respectively comprise a punch press 3 and a bending die, the bending die comprises an upper die and a lower die, the upper die comprises an upper mounting plate 4, an upper die plate 6 arranged below the upper mounting plate 4, a bearing seat 22 and an upper positioning block 23 arranged below the upper die plate 6 and a bending turning plate 24 hinged with the bearing seat 22 through a telescopic piece 21, the bending turning plate 24 is hinged with a push rod 29, the push rod 29 is hinged with the upper mounting plate 4, and the lower die comprises a lower positioning block 25 for placing a refrigerator door decoration strip blank and an elastic positioning device for plane positioning of the refrigerator door decoration strip blank.

The elastic positioning device comprises three groups of positioning cylinders 28, a plurality of stripping cylinders 26 arranged in the lower positioning block 25 and position sensors 27, wherein the three groups of positioning cylinders 28 are uniformly distributed on one side of the lower positioning block 25, the stripping cylinders 26 and the positioning cylinders 28 are arranged in parallel and embedded in the lower positioning block 25, the position sensors 27 are embedded in the lower positioning block 25, and the detection heads of the position sensors face upwards; the manipulator 2 can perform grabbing and transferring actions in the left-right direction and the up-down direction; the blanking and cutting device, the bending and forming device, the first bending device and the punch 3 of the second bending device all act simultaneously, and all the manipulators 2 also act simultaneously.

When the device is used specifically, the working procedures of the production line are that the cutting upper die and the cutting lower die, the flanging upper die and the forming flanging lower die, and the bending upper die and the bending lower die of the blanking cutting device, the bending forming device, the first bending device and the second bending device are separated simultaneously.

Taking the figure 1 as a direction standard, a manipulator 2 between a material platform 1 and a blanking cutting device moves leftwards to grab the refrigerator door decorative strip blank and transfers the blank rightwards to the blanking cutting device,

meanwhile, the manipulator 2 behind the blanking and cutting device moves leftwards to grab the blank of the decorative strip of the refrigerator door and transfers the blank rightwards to the bending and forming device, and the manipulator 2 moves leftwards to reset for standby; meanwhile, a manipulator 2 behind the bending forming device moves leftwards to grab the refrigerator door trim blank and transfers the blank rightwards to the first bending device, and the manipulator 2 moves leftwards to reset for standby; meanwhile, the manipulator 2 behind the first bending device moves leftwards to grab the refrigerator door trim blank and transfers the blank rightwards to the second bending device, and the manipulator 2 moves leftwards to reset for standby; meanwhile, the manipulator 2 behind the second bending device moves leftwards to grab the refrigerator door decorative strip blank and transfers the blank rightwards to the material platform, and the manipulator 2 moves leftwards to reset for standby; the actions of each step in the steps are synchronous, and the manipulator 2 grabs the workpiece leftwards and rightwards and resets simultaneously.

Then, the blanking cutting device, the bending forming device, the first bending device and the second bending device are used for cutting the upper die and the lower die, the flanging upper die and the forming flanging lower die and the bending upper die and the bending lower die to simultaneously perform contact stamping, the blanking cutting device is used for cutting the material to form a blank in length, the bending forming device is used for enabling the blank to be in concave-convex dislocation in plane and bending two ends, and the first bending device and the second bending device are used for forming two right-angled forming bends for the blank. Thus, a working cycle of the automatic production line of the decorative strips of the refrigerator door is completed.

The concrete process of blanking cutting device at during operation does: when the upper cutting die and the lower cutting die are separated, a blank is placed and positioned, the first pressing and positioning module 10 and the second pressing and positioning module 11 are pressed up and down to fix the blank, the punch 12 moves down to cut the length of the blank, the upper cutting die and the lower cutting die are separated and reset after processing is finished, and the blank is taken out through the manipulator 2 to perform the next process.

The concrete working process of the bending forming device is as follows: the blank is put into and is fixed a position when mould and shaping hem lower mould separate in the shaping hem, go up briquetting 15 and briquetting 16 down and compress tightly the blank and make the unsmooth dislocation shaping in blank plane, briquetting 15 and briquetting 16 are down stretched out to the edge of blank, when shaping hem cope match-plate pattern 6 pushes down, side pushing block 19 overcomes the elasticity of spring module 20 under the effect of slide wedge 18 and is close to the direction that pushes down 16, side pushing block 19 is buckled the edge of blank downwards, mould and shaping hem lower mould separate the reset after accomplishing processing on the shaping hem, drawing of patterns on the blank is 16 by lower briquetting upwards with drawing of patterns piece 17, take out the blank through manipulator 2 and carry out process on next step.

The first bending device and the second bending device have the same working principle and process, and only the bending treatment on different right angles is carried out, and the specific process is as follows: the upper die and the lower die are separated to place the blank into the bending die, the blank is accurately positioned through the positioning cylinder 28 and the lower positioning block 25, the upper die plate 6 firstly descends, the upper positioning block 23 and the lower positioning block 25 are pressed to compress the blank, meanwhile, the positioning cylinder 28 retracts, the right-angle edge of the blank to be bent is located at the edge of the lower positioning block 25 close to one side of the bending turning plate 24, the upper mounting plate 4 then descends, the rod hinged to the upper mounting plate 4 is driven to push 29 the bending turning plate 24 to bend the suspended part of the blank, the upper die and the lower die are separated and reset after the bending is completed, and the blank is taken out through the manipulator 2 to perform the next step.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.

Claims

1. An automatic production line for refrigerator door decoration strips comprises a material platform (1) arranged at the head end and the tail end, a blanking cutting device, a bending forming device, a first bending device, a second bending device and manipulators (2) respectively arranged between the material platform (1) and the devices, wherein the blanking cutting device, the bending forming device, the first bending device and the second bending device are stamping devices with corresponding dies, elastic positioning devices are arranged in the first bending device and the second bending device, the material platform (1), the blanking cutting device, the bending forming device, the first bending device, the second bending device and the manipulators are controlled by a master control box, the blanking cutting device cuts the length of materials to form blanks, and the bending forming device enables the blank planes to be staggered in a concave-convex mode and the two ends to be bent, the first bending device and the second bending device form two right-angled forming bends for the blank.

2. The automatic production line of refrigerator door trim according to claim 1, characterized in that the blanking and cutting device comprises a punch (3) and a cutting die arranged in the punch (3), the cutting die comprises a cutting upper die and a cutting lower die, the cutting upper die is sequentially provided with an upper mounting plate (4), an upper supporting leg (5) and an upper die plate (6) from top to bottom, the cutting lower die is sequentially provided with a lower mounting plate (7), a lower supporting leg (8) and a lower die plate (9) from bottom to top, two sets of vertically corresponding first pressing positioning modules (10) and second pressing positioning modules (11) are respectively arranged on the upper die plate (6) and the lower die plate (9), and one of the first pressing positioning modules (10) is provided with a punch (12).

3. The automatic production line of the refrigerator door trim strip according to claim 1, wherein the bending and forming device comprises a punch (3) and a forming and flanging die arranged in the punch (3), the forming and flanging die comprises a forming and flanging upper die and a forming and flanging lower die, the forming and flanging upper die is sequentially provided with an upper mounting plate (4), an upper supporting leg (5) and an upper template (6) from top to bottom, the forming and flanging lower die is sequentially provided with a lower mounting plate (7), a lower supporting leg (8) and a lower template (9) from bottom to top, an upper press block (15) is arranged below the middle part of the upper template (6), a nitrogen spring (13) is arranged above the upper press block (15), a lower press block (16) is arranged above the lower template (9) corresponding to the upper press block (15), demoulding blocks (17) are arranged on two sides of the lower press block (16), the demoulding device is characterized in that a wedge (18) is arranged on the outer side of the demoulding piece (17), side push blocks (19) are symmetrically arranged on two sides of an upper press block (15) below the upper template (6), and the contact surface of each side push block (19) and the wedge (18) is an inclined surface of the wedge (18).

4. The automatic production line of the refrigerator door trim according to claim 3, characterized in that the height of the side push block (19) is greater than that of the upper pressing block (15), a spring module (20) is arranged on the outer side of the side push block (19), the right-angle edge of the side push block (19) close to the upper pressing block (15) is smoothly processed, and the right-angle edge of the side far away from the upper pressing block (15) is provided with a cutting angle matched with the inclined plane of the wedge (18).

5. The automatic production line of the refrigerator door trim according to claim 1, wherein the first bending device and the second bending device each comprise a punch (3) and a bending die, the bending die comprises an upper bending die and a lower bending die, the upper bending die comprises an upper mounting plate (4), an upper template (6) arranged below the upper mounting plate (4) through a telescopic piece (21), a bearing seat (22) and an upper positioning block (23) arranged below the upper template (6), and a bending turning plate (24) hinged to the bearing seat (22), a push rod (29) is hinged to the bending turning plate (24), the push rod (29) is hinged to the upper mounting plate (4), and the lower bending die comprises a lower positioning block (25) for placing a refrigerator door trim blank and an elastic positioning device for positioning the plane of the refrigerator door trim blank.

6. The automatic production line of the refrigerator door trim according to claim 5, wherein the elastic positioning device comprises three groups of positioning cylinders (28), a plurality of stripping cylinders (26) arranged in the lower positioning block (25), and position sensors (27), wherein the three groups of positioning cylinders (28) are uniformly distributed on one side of the lower positioning block (25), the stripping cylinders (26) and the positioning cylinders (28) are arranged in parallel and embedded in the lower positioning block (25), and the position sensors (27) are embedded in the lower positioning block (25) and have detection heads facing upwards.

7. The automatic production line of refrigerator door trims as claimed in claim 1, wherein said robot arm (2) can perform gripping and transferring actions in the left-right direction and up-down direction.

8. The automatic production line of refrigerator door trim according to claim 1, characterized in that the punching machines (3) of the blanking and cutting device, the bending and forming device, the first bending device and the second bending device are all operated at the same time, and all the manipulators (2) are also operated at the same time.