CN215320361U

CN215320361U - Deformation correcting device for rubbing strip outer plate of injection molding G08 automobile front door

Info

Publication number: CN215320361U
Application number: CN202121401045.1U
Authority: CN
Inventors: 姜承鹏; 张绿建; 张一鸣; 母久伟; 朱田华; 邹玉秀; 刘海运; 尹金德; 李忠宇
Original assignee: Dalian Hualu Guozheng Industry Co ltd
Current assignee: Dalian Hualu Guozheng Industry Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-12-28
Anticipated expiration: 2031-06-23

Abstract

The utility model belongs to an injection molding G08 automobile front door chafing strip outer plate deformation correcting device, which comprises a workpiece support and is characterized in that a transverse beam, a longitudinal beam, a middle longitudinal beam and a fixed beam have the same structure, and trapezoidal grooves are formed on four sides; a rotary pressing mechanism is arranged in a trapezoidal groove in the middle of the longitudinal beams at the left end and the right end; a profiling jig is arranged below one end of each rotary pressing mechanism. The utility model discloses a solve the difficult technical problem of car qianmen chafing strip planking deformation of moulding plastics, ensured product quality, satisfied the product tolerance requirement, the appearance is beautiful.

Description

Deformation correcting device for rubbing strip outer plate of injection molding G08 automobile front door

Technical Field

The utility model belongs to injection molding automobile part correction equipment, and particularly relates to an injection molding G08 automobile front door rubbing strip outer plate deformation correction device.

Background

It is first of all clear how the warpage of the injection-molded article occurs, the direct cause of warpage of the injection-molded article being the uneven shrinkage of the plastic (shrinkage itself is not important, it is important that the difference in shrinkage) during the plasticizing phase of the barrel of the injection-molding machine, i.e. when the plastic particles are converted from the glassy state to the viscous state. The temperature difference of the melt temperature in the axial direction and the radial direction (relative to the screw) can cause stress to the plastic; parameters such as injection pressure and injection speed of the injection machine greatly influence the orientation degree of molecules during filling, and further cause buckling deformation. The plastic is filled into the mold cavity in the stage of filling the mold cavity, that is, the molten plastic is filled into the mold cavity under the action of injection pressure and is cooled and solidified in the mold cavity. In the process, the mutual coupling action of the temperature, the pressure and the speed has great influence on the quality and the production efficiency of the plastic part. The main reasons are as follows:

1. higher pressures and flow rates produce high shear rates, causing differences in molecular orientation parallel to the flow direction and perpendicular to the flow direction, causing the plastic to shrink more in the flow direction than in the perpendicular direction;

2. the mold temperature is low, so that the increase of internal stress is also caused by uneven cooling and shrinkage of the plastic between the plastic contacting the surface layer of the mold and the central flowing layer;

3. the temperature difference between the mold cavity and the mold core is too large, because the melt close to the cold mold cavity surface is cooled down quickly, the material layer close to the hot mold cavity surface can continue to shrink, and the uneven shrinkage can cause the plastic part to warp;

4. due to the different wall thicknesses of all parts of the product, the uneven cooling speed and shrinkage of all parts cause the plastic part to generate warping deformation, and the plastic product is subjected to an ejection stage, namely the process that the product is separated from the mold under the action of external force.

In conclusion, the higher demolding temperature and the lower hardness of the plastic part enable the product to deform under the ejection force; the ejection system is unbalanced in arrangement, so that the ejection force is unbalanced to deform the plastic part; the sectional area of the ejector rod is too small, so that the unit area of the plastic part is stressed too much (particularly when the demolding temperature is too high) to deform the plastic part; when a large-sized deep-cavity thin-wall plastic part is ejected, the plastic part deforms due to large demoulding resistance. The physical properties of the plastic itself also cause warpage of the injection-molded part. The warping deformation mainly occurs in the middle of the automobile front door rubbing strip outer plate.

The buckling deformation of the injection molding part means that the shape of the injection molding part is different from that of a mold cavity, which is one of the common defects of plastic products. With the development of the plastic industry, people have higher and higher requirements on the appearance and the service performance of plastic products, and the degree of warpage is also more and more concerned and emphasized by injection molding manufacturers as one of important indexes for evaluating the quality of products.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a deformation correcting device for an injection molding G08 automobile front door rubbing strip outer plate, which is provided with a profiling jig and a rotary pressing mechanism on a workpiece support, is used for air cooling and shaping a workpiece, and is used for trimming a pouring gate by using scissors to ensure that a product cannot deform.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a kind of injection moulding G08 car front door defends the strip planking and deforming the correcting device, including the work piece support, the work piece support is made up of horizontal roof beam, longitudinal beam, middle fixed beam and four lower landing legs of left and right sides in front and back, characterized by that horizontal roof beam, longitudinal beam, middle longitudinal beam and fixed beam their structure is the same, all there are dovetail grooves on four sides; a rotary pressing mechanism is arranged in a trapezoidal groove in the middle of the longitudinal beams at the left end and the right end; two rotary pressing mechanisms are arranged in the middle of the middle longitudinal beam; a profiling jig is arranged below one end of each rotary pressing mechanism; MP30-59PS pneumatic scissors are arranged between the two profiling fixtures, a fixing ring is fixed in the middle of the MP30-59PS pneumatic scissors and fixedly connected with a fixing block, the fixing block is fixed below a driving plate, and the driving plate is fixedly connected with a piston rod of an HLH 20X 308H2 cylinder; an HLH 20X 308H2 cylinder is fixed on the fixed beam; the upper part of the MP30-59PS pneumatic scissors is arranged in the scissors fixing ring.

Rotatory hold-down mechanism, include about and pass through the bolt hole with the bolt in the dovetail groove on the vertical roof beam in middle with the bolt and be fixed with the base, be fixed with the rotatory cylinder that compresses tightly of ACKR25 x 90 above the base, ACKR25 x 90 is fixed with the depression bar in the rotatory rotary rod upper end that compresses tightly the cylinder, the other end of depression bar is equipped with the arc recess, in the arc recess with the fixed pressure head axle swing joint above the polyurethane pressure head.

A profiling jig is arranged below a polyurethane pressure head of the rotary pressing mechanism, the profiling jig comprises a profiling support block slideway fixed at the upper end of a profiling support frame, the profiling support block slideway is provided with a chute, and the chute is in sliding connection with a boss arranged below the right profiling support block; the left profiling support block is arranged on the left side of the profiling support block slide way, and two adjusting bolts for adjusting the distance are arranged between the left profiling support block and the right profiling support block.

The utility model has the beneficial effects that: the utility model solves the technical problem of injection molding deformation of the automobile front door rubbing strip outer plate, ensures the product quality, meets the requirement of product tolerance and has beautiful appearance.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

FIG. 1 is a three-dimensional view of an injection-molded G08 automobile front door scuff strip outer plate deformation correcting device;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is an enlarged, fragmentary, three-dimensional view at I of FIG. 1;

fig. 5 is a three-dimensional view of the corrected state of the outer panel of the G08 automobile front door scuff strip of fig. 1.

In the figure: 1-G08 automobile front door rubbing strip outer plate; 2-rotating the pressing mechanism; 2-1-compression bar; 2-2-ACKR25 × 90 rotary compaction cylinder; 2-2-1-left cavity air inlet and outlet interface; 2-2-2-right cavity air inlet and outlet interface; 2-3-arc groove; 2-4-a base; 2-5-bolt hole; 3-MP30-59PS pneumatic scissors; 3-1-air inlet and outlet ports of the left cavity of the scissors; 3-2-air inlet and outlet ports of the right cavity of the scissors; 4-a polyurethane indenter; 4-1-indenter shaft; 5-profiling jig; 5-1-a profiling jig support frame; 5-2-left profiling support block; 5-3-right profiling supporting block; 5-3-1-boss; 5-4-support block slide; 5-5-chute; 6-a workpiece holder; 6-1-transverse beam; 6-2-longitudinal beam; 6-3-trapezoidal groove; 6-4-middle longitudinal beam; 6-5-legs; 7-adjusting the bolt; 8-HLH 20X 308H2 cylinder; 8-1-air inlet and outlet interfaces of the upper cavity of the air cylinder; 8-2-cylinder lower cavity air inlet and outlet interface; 9-fixing the beam; 10-a drive plate; 11-a scissors fixing ring; 12-a fixed ring; 13-a gate; and 14-fixing blocks.

Detailed Description

The embodiment refers to the attached drawings, and the deformation correcting device for the anti-rubbing strip outer plate of the injection molding G08 automobile front door comprises a workpiece support 6, wherein the workpiece support 6 consists of a front transverse beam 6-1, a rear transverse beam 6-1, a left longitudinal beam 6-2, a right longitudinal beam 6-2, a middle longitudinal beam 6-4, a middle fixing beam 9 and four support legs 6-5 below, and is characterized in that the transverse beam 6-1, the longitudinal beam 6-2, the middle longitudinal beam 6-4 and the fixing beam 9 are identical in structure, and four sides of the transverse beam are provided with trapezoidal grooves 6-3; a rotary pressing mechanism 2 is arranged in a trapezoidal groove 6-3 in the middle of the longitudinal beam 6-2 at the left end and the right end; two rotary pressing mechanisms 2 are arranged in the middle of the middle longitudinal beam 6-4; a profiling jig 5 is arranged below one end of each rotary pressing mechanism 2; MP30-59PS pneumatic scissors 3 are arranged between the two profiling fixtures 5, a fixing ring 12 is fixed in the middle of the MP30-59PS pneumatic scissors 3, the fixing ring 12 is fixedly connected with a fixing block 14, the fixing block 14 is fixed below a driving plate 10, and the driving plate 10 is fixedly connected with a piston rod of an HLH 20X 308H2 cylinder 8; the HLH 20X 308H2 cylinder 8 is fixed on the fixed beam 9; the upper part of the MP30-59PS pneumatic scissors 3 is arranged in the scissors fixing ring 11.

The rotary pressing mechanism 2 comprises bases 2-4 fixed in trapezoidal grooves 6-3 on left and right longitudinal beams 6-2 and middle longitudinal beams 6-4 through bolt holes 2-5 by bolts, ACKR25 x 90 rotary pressing cylinders 2-2 fixed on the bases 2-4 by bolts, pressing rods 2-1 fixed at the upper ends of rotary rods of the ACKR25 x 90 rotary pressing cylinders 2-2, arc-shaped grooves 2-3 arranged at the other ends of the pressing rods 2-1, and pressing head shafts 4-1 fixed on the polyurethane pressing heads 4 in the arc-shaped grooves 2-3.

A profiling jig 5 is arranged below a polyurethane pressure head 4 of the rotary pressing mechanism 2, the profiling jig 5 comprises a profiling support block slideway 5-4 fixed at the upper end of a profiling support frame 5-1, the profiling support block slideway 5-4 is provided with a chute 5-5, and the chute 5-5 is in sliding connection with a boss 5-3-1 arranged below a right profiling support block 5-3; the left upper surface of the profiling support block slideway 5-4 is provided with a left profiling support block 5-2, and two adjusting bolts 7 for adjusting the distance are arranged between the left profiling support block 5-2 and the right profiling support block 5-3.

An upper cavity of the HLH 20X 308H2 cylinder 8 is provided with an air inlet and outlet interface 8-1 of an upper cavity of the cylinder, and a lower cavity of the cylinder is provided with an air inlet and outlet interface 8-2 of a lower cavity of the cylinder; the ACKR25 x 90 rotary compaction cylinder 2-2 is provided with a left cavity air inlet and outlet port 2-2-1 at the left cavity and a right cavity air inlet and outlet port 2-2-1 at the right cavity; MP30-59PS pneumatic scissors 3 scissors left cavity air inlet and outlet interface 3-1 and scissors right cavity air inlet and outlet interface 3-2. The electromagnetic control valve in the interface uniform air compression control system of the air cylinder is communicated, and is automatically controlled by a PLC through programming.

The G08 automobile front door rubbing strip outer plate 1 is formed by one-step molding in a mould, three gates 13 are arranged between the two plates, and the middle gate 13 is cut off when the deformation correction is carried out.

This embodiment allows for four products to be corrected at a time.

The utility model discloses an operation method is: firstly, adjusting the distance between a left profiling support block 5-2 and a right profiling support block 5-3 by using an adjusting bolt 7 according to the design size of a product; then, a workpiece G08 automobile front door chafing strip outer plate 1 taken out of the die by a robot is placed on the profiling jig 5, and is pressed to the middle position of the G08 automobile front door chafing strip outer plate 1 by a pressure rod 2-1 and a polyurethane pressure head 4 of a rotary pressing mechanism 2, and the position of the workpiece can be adjusted by adopting an ACKR25 multiplied by 90 rotary pressing cylinder 2-2 to ensure that the workpiece is pressed in the middle. After the pressure is well pressed, HLH 20X 308H2 cylinder 8 adjusts the height of MP30-59PS pneumatic scissors 3, and the gate 13 is cut off. And (3) air cooling is carried out while the product deformation is corrected, the time is controlled to be 30 minutes, and the product is obtained after full cooling.

Claims

1. An injection molding G08 automobile front door rubbing strip outer plate deformation correcting device comprises a workpiece support (6), wherein the workpiece support (6) consists of a front transverse beam (6-1), a rear transverse beam (6-1), a left longitudinal beam (6-2), a right longitudinal beam (6-2), a middle longitudinal beam (6-4), a middle fixed beam (9) and four support legs (6-5) below, and is characterized in that the transverse beam (6-1), the longitudinal beam (6-2), the middle longitudinal beam (6-4) and the fixed beam (9) have the same structure, and four sides of the transverse beam (6-1), the longitudinal beam (6-2), the middle longitudinal beam (6-4) and the fixed beam (9) are provided with trapezoidal grooves (6-3); a rotary pressing mechanism (2) is arranged in a trapezoidal groove (6-3) in the middle of the longitudinal beam (6-2) at the left end and the right end; two rotary pressing mechanisms (2) are arranged in the middle of the middle longitudinal beam (6-4); a profiling jig (5) is arranged below one end of each rotary pressing mechanism (2); MP30-59PS pneumatic scissors (3) are arranged between the two profiling fixtures (5), a fixing ring (12) is fixed in the middle of the MP30-59PS pneumatic scissors (3), the fixing ring (12) is fixedly connected with a fixing block (14), the fixing block (14) is fixed below a driving plate (10), and the driving plate (10) is fixedly connected with a piston rod of an HLH 20X 308H2 cylinder (8); an HLH 20X 308H2 cylinder (8) is fixed on the fixed beam (9); the upper part of the MP30-59PS pneumatic scissors (3) is arranged in the scissors fixing ring (11).

2. The device for correcting the deformation of the outer plate of the anti-friction strip of the injection-molded G08 automobile front door according to claim 1, wherein the rotary pressing mechanism (2) comprises a base (2-4) fixed in a trapezoidal groove (6-3) above a left longitudinal beam, a right longitudinal beam (6-2) and a middle longitudinal beam (6-4) through bolt holes (2-5) by bolts, an ACKR25 x 90 rotary pressing cylinder (2-2) is fixed on the base (2-4) by bolts, a pressing rod (2-1) is fixed at the upper end of a rotating rod of the ACKR25 x 90 rotary pressing cylinder (2-2), an arc-shaped groove (2-3) is arranged at the other end of the pressing rod (2-1), and the arc-shaped groove (2-3) is movably connected with a pressing head shaft (4-1) fixed on a polyurethane pressing head (4).

3. The injection molding G08 automobile front door chafing strip outer plate deformation correcting device according to claim 1, characterized in that a profiling jig (5) is arranged below a polyurethane pressure head (4) of the rotary pressing mechanism (2), the profiling jig (5) comprises a profiling support block slideway (5-4) fixed at the upper end of a profiling support frame (5-1), the profiling support block slideway (5-4) is provided with a chute (5-5), and the chute (5-5) is in sliding connection with a boss (5-3-1) arranged below a right profiling support block (5-3); the left profiling supporting block (5-2) is arranged on the left side of the profiling supporting block slideway (5-4), and two adjusting bolts (7) for adjusting the distance are arranged between the left profiling supporting block (5-2) and the right profiling supporting block (5-3).