CN106584596A - Film piece blanking mould of automobile center control IMF - Google Patents

Abstract

The invention provides a diaphragm blanking die, which is aimed at the actual production requirements of the automotive interior trim strip IMF products that need to be covered with a three-dimensional complex curved film by the IMF process, and adopts the side core-pulling slider + cylinder combination mechanism to design side wrapping Preformed diaphragm die cut by side cutting and front punching mold Preformed diaphragm stamping die Upper mold assembly The cavity insert in the upper die assembly effectively solves the punching and forming of the central hole, and the side dies the slider Mechanism components effectively solve the problem of edge wrapping and punching of three-dimensional curved surfaces in the IMD process. The diaphragm formed by the combined mold has no forming quality problems such as curling, tearing, and damage, which effectively improves the film forming yield of the interior trim IMF product, can be automated, effectively reduces the production cost of similar products, and improves work efficiency. , providing a useful reference for the design and production of similar products.

Description

An automotive central control IMF diaphragm punching die

technical field

The invention relates to a blanking die for an automobile central control IMF diaphragm.

Background technique

In the structural design of IMF injection molds, the design of the diaphragm blanking mold is an important difficulty in the mold design. In the product injection molding process, the demoulding of complex products depends on the ingenious design of the demoulding mechanism, which requires continuous institutional innovation and mold structure. Innovate to meet the actual needs of production. At present, IMF technology applied to car interior parts has the advantages of wear resistance, good overall protection, patterns and colors can be preserved intact without fading. One application problem of the IMF process is that it is not possible to produce products with high side heights. The reason is that the high tensile ductility of the preformed film is not good and the deformation of the pattern in the stretched area of the film is relatively large. The three-dimensional forming height of the IMF pattern No more than 1.5mm, there is still a certain technical bottleneck in order to obtain a large side stretch height and no distortion or small distortion of the pattern on the film. Another application problem of the IMF process is the production and molding of slender plastic parts. Since the plastic parts are slender and have relatively large shrinkage deformation in the length direction, it is easy to cause defects such as curling, edge removal, and wrinkles of the film after injection molding. Therefore, it is necessary to Take these issues into consideration when designing the molding die.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automobile central control IMF diaphragm punching die, which is reasonable in design, compact in structure, stable in work, safe and reliable, and easy to use.

In order to solve the above-mentioned existing technical problems, the present invention adopts the following scheme: a punching die for the central control IMF diaphragm of an automobile, including a vertical punching head, a cavity pressing film insert, a side pressing film block, a panel, a side Positioning insert block, slider pressing block, side punching head, slider body, cylinder, cylinder support block, slider wear-resistant block, bottom template, core, film pressing block spring, spring pin, guide post pressure Block, guide post, guide sleeve, punching die head in the ninth zone, punching die head in the second zone, punching die head in the third zone, side cutting slider in the fifth zone, side cutting slider in the fourth zone, side cutting in the first zone Slider, side cutting slider on the right side of the eighth area, side cutting slider on the left side of the eighth area, side cutting slider on the seventh area, side cutting slider on the sixth area, inclined guide post of the slider.

The side punching assembly includes a total of 7 slider assemblies, which are the side cutting slider in the first area, the punching die in the second area, the punching die in the third area, the side cutting slider in the fourth area, and the fifth area Side cutting slider, side cutting slider in the sixth zone, side cutting slider in the seventh zone, right side cutting slider in the eighth zone, punching die head in the ninth zone, and left side cutting slider in the eighth zone.

The structures of the 7 slider assemblies are similar. Taking the side-cutting slider in the seventh area as an example, its structural composition includes a slider pressing block, a side punching head, a slider body, a cylinder, a cylinder support block, a slider resistant Grinding block, slider inclined guide post.

The upper mold assembly includes a vertical punching head, a cavity lamination insert, a side lamination block, a panel, a side positioning insert, a guide sleeve, a slider pressing block of 7 slider assemblies, and a slider Inclined guide column; lower mold assembly includes slider wear block, bottom template and core.

Beneficial effect:

The present invention adopts a kind of automobile central control IMF diaphragm blanking die provided by the above-mentioned technical scheme, adopts the side core pulling slider + cylinder combination mechanism, and designs the preformed diaphragm punching with side wrapping side cutting and front punch punching. Cutting mold, preformed diaphragm punching mold structure includes upper and lower mold components and side punching slider mechanism components, the cavity insert in the upper mold component effectively solves the punching and forming of the central hole, The side punching slider mechanism assembly effectively solves the problem of edge wrapping and punching forming of three-dimensional curved surfaces in the IMD process. The diaphragm formed by the designed combined mold has no forming quality problems such as roll angle, cracking, damage, etc., which effectively improves the film forming yield of interior trim IMF products, and provides a useful reference for the design and production of similar products. The structure design is reasonable, the structure is compact, the work is stable, and it can be produced automatically, which can effectively reduce the production cost of similar products and improve the stability of product ejection. The mold structure is novel and practical.

Description of drawings

Figure 1 Schematic diagram of preformed membrane cutting;

Fig. 2 Schematic diagram of punching die structure.

detailed description

After the diaphragm is preformed, it needs to be trimmed according to the shape of the final product. When designing the cutting mold, it is necessary to partition the cutting area of the preformed diaphragm. Therefore, the preformed The diaphragm is divided into nine cutting areas, which are cut with different slider cutting punches.

From the perspective of the distribution characteristics of the punching area, there are two punching schemes for the punching of the preformed diaphragm, vertical punching and side cutting, and the first, fourth to eighth edge areas use side cutting. Cutting type, the second, third and ninth areas adopt vertical cutting type, and punching type punching. One problem that needs to be considered in side punching is the flipping and hemming of the cutting edge shown in Figure 1 (a). When punching the side, it needs to be hemmed at the bottom by 1mm, and the vertical cutting position needs to be 5mm. The fixation requires the cavity die insert and the side die block to be pressed and fixed. The forming and punching of the second, third and ninth areas are completed by vertical film cutting punches. The first, fourth to eighth edge areas The forming punching of the film is completed by the side cutting film punch.

According to the above analysis, the final punching die structure design is shown in Figure 2. The die structure includes an upper die assembly, a lower die assembly, and a side punching assembly. The side punching assembly includes a total of 7 slider assemblies, which are the side cutting slider 24 in the first area, the punching die head 20 in the second area, the punching die head 21 in the third area, the side cutting slider 23 in the fourth area, and the cutting die head in the second area. The side cutting slider 22 in the fifth zone, the side cutting slider 28 in the sixth zone, the side cutting slider 27 in the seventh zone, the right side cutting slider 25 in the eighth zone, the punching die head 19 in the ninth zone, and the left side cutting slider 26 in the eighth zone. The structures of the 7 slider assemblies are similar. Taking the side cutting slider 27 in the seventh area as an example, its structural composition includes a slider pressing block 6, a side punching head 7, a slider body 8, a cylinder 9, and a cylinder support block 10 , slide block wear block 11, slide block inclined guide post 29. The upper mold assembly includes a vertical punching head 1, a cavity lamination insert 2, a side lamination block 3, a panel 4, a side positioning insert 5, a guide sleeve 18, and 7 slide block assemblies for pressing Block 6, slide block inclined guide post 29;

In actual work, the specific working principle is as follows:

The upper mold assembly of the mold is driven by the punching machine, the upper and lower mold assemblies are opened, and the preformed diaphragm is manually placed on the core 13 of the punching die, and the positioning hole on the diaphragm and the positioning on the core are used. The pins are matched for positioning, and when the mold is closed, take the seventh slider assembly as an example, the diaphragm is under the push of the cavity film insert 2 and the side film pressing block 3, and the side punching head 7 is installed on the slider On the body 8, under the drive of the inclined guide post 29 of the slider, the slider body 8 moves closer to the diaphragm side with the punching head 7, because the oblique guide post 29 and the oblique guide post hole on the slider body leave a 1mm gap, so when the mold is completely closed, after the slider body 8 moves to a certain position, it will not be driven by the inclined guide column 29 of the slider, and is in a stop state. At this time, the side of the diaphragm is pressed by the side pressing film block 3 , the front side has been punched by the punching die head 19 of the ninth zone, the punching die head 20 of the second zone, and the punching die head 21 of the third zone, and the side is to be further punched. Then, the mold gas-assisted device is started, Cylinder 9 pushes the slider body 8 inwards to carry out punching with a distance of 1 mm to complete side wrapping and punching. After punching is completed, the mold is opened, and the punched formed diaphragm is manually taken out, and then waits for the next working cycle .

The invention overcomes the difficult problem of three-dimensional forming of the diaphragm, adopts the method of hot pressing + vacuum adsorption, designs the diaphragm preformed diaphragm mold, adopts the side core pulling slider + cylinder combination mechanism, and designs the side wrapping side cutting and front side The preformed diaphragm punching die is punched and punched. The structure of the diaphragm preformed die includes upper and lower die components. During work, the diaphragm is placed and heated and softened. The upper and lower sealed cavities are formed. By pressurizing the upper cavity and vacuuming the lower cavity, the softened diaphragm can be accurately fitted to the core for molding, effectively reducing the production cost of similar products and improving work efficiency.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention, and those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but It does not depart from the spirit of the invention or go beyond the scope defined by the appended claims.

Claims (4)

1. a kind of automobile middle control IMF diaphragm blanking dies, including vertical cutting head, die cavity press mold mold insert, side press mold block, face Plate, side positioning inserted block, slide block compact heap, side cutting head, slide body, cylinder, cylinder supports block, slide block wear-resistant block, bed die Plate, core, press mold block spring, spring pin, guide pillar briquetting, guide pillar, guide pin bushing, the 9th area punching die head, the secondth area punching die head, Lateral incision on the right of 3rd area punching die head, the 5th area's lateral incision slide block, the 4th area's lateral incision slide block, first area's lateral incision slide block, Section Eight is slided Block, Section Eight left side lateral incision slide block, SECTOR-SEVEN lateral incision slide block, the 6th area's lateral incision slide block, slide block Angle Pin.

2. a kind of automobile middle control IMF diaphragm blanking dies according to claim 1, it is characterised in that：The side punching Component altogether include 7 slide block assemblies, respectively first area's lateral incision slide block, the secondth area punching die head, the 3rd area punching die head, the 4th Lateral incision slide block on the right of area's lateral incision slide block, the 5th area's lateral incision slide block, the 6th area's lateral incision slide block, SECTOR-SEVEN lateral incision slide block, Section Eight, 9th area punching die head, Section Eight left side lateral incision slide block.

3. a kind of automobile middle control IMF diaphragm blanking dies according to claim 1, it is characterised in that：7 slide block groups The structure of part is similar, by taking SECTOR-SEVEN lateral incision slide block as an example, its structure composition include slide block compact heap, side cutting head, slide body, Cylinder, cylinder supports block, slide block wear-resistant block, slide block Angle Pin.

4. a kind of automobile middle control IMF diaphragm blanking dies according to claim 1, it is characterised in that：The upper die component The cunning of inserted block, guide pin bushing, 7 slide block assemblies is positioned including vertical cutting head, die cavity press mold mold insert, side press mold block, panel, side Block compact heap, slide block Angle Pin；Lower mold assemblies include slide block wear-resistant block, end template, core.