Pot body pull expansion pressing mold

A technology of mold and expansion pressure, which is applied in the field of processing molds for thermos pots, can solve problems affecting product quality, unstable dimensions, and asymmetrical molding heights, so as to reduce the annealing and polishing process and avoid asymmetrical opening heights , The effect of reducing processing costs

Active Publication Date: 2017-02-22
揭阳市海霖电器有限公司
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AI-Extracted Technical Summary

Problems solved by technology

The equipment structure of each process in this method is relatively simple, but it has the following defects: First, the auxetic process often causes the pot body to crack during the subsequent pressing process due to unstable dimensions, or the large error in the size of the pot mouth affects the thermal insulation performance, and maintenance is required. Seriously lead to product scrapping; the annealing, polishing and edge trimming process increases additional production costs, and at the same time brings certain safety hazards; becau...
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Method used

In the present embodiment, the surface opposite to the inclined surface of the outer slide block 14 and the limiting wedge 15 is a corresponding inc...
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Abstract

The invention discloses a pull expansion pressing mold. The pull expansion pressing mold comprises an upper mold and a lower mold; the upper mold is provided with an edge pressing ring and a pull expansion wedge; the edge pressing ring is connected with a pressing rod, and is mounted on the lower side of an upper template; the pull expansion wedge is mounted on the lower side of the upper template; the lower end of the pull expansion wedge is wedged; a mold core is mounted on the upper side of a lower template; and a pull expansion slide block is arranged on a first slide rail at the top of the mold core, and is corresponding to the pull expansion wedge in position. The pull expansion pressing mold combines pressing and pull expansion procedures on one mold, reduces annealing and polishing procedures, reduces the machining cost, eliminates the annealing potential safety hazards, and meanwhile, reduces the labor intensity of staff; and the pressing and pull expansion procedures are combined, so that such problems as asymmetric heights, different sizes or even cracking of openings caused by secondary positioning errors of two procedures are prevented, the product quality is more stable, and the product quality is improved.

Application Domain

Shaping toolsHollow articles

Technology Topic

Bar pressingEngineering +2

Image

  • Pot body pull expansion pressing mold
  • Pot body pull expansion pressing mold

Examples

  • Experimental program(1)

Example Embodiment

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.
[0018] An auxetic compression mold includes an upper mold and a lower mold. The upper mold is provided with a blanking ring 11 and an auxetic wedge 12. The blanking ring 11 is connected to a pressing rod 111 and installed on the lower side of the upper template 13, and It is used to make the outer wall of the workpiece close to the mold core 21 to complete the shaping process; the auxetic wedge 12 is installed on the lower side of the upper template 13, and the lower end of the auxetic wedge 12 is wedge-shaped; the lower template 23 is installed on the upper side There is a mold core 21 corresponding to the contour of the pot body. The top of the mold core 21 is provided with an auxetic slider 22 on the first slide rail 221. The position of the auxetic slider 22 corresponds to the position of the auxetic wedge 12 The auxetic wedge block 12 pushes the auxetic slider 22 to move along the first slide rail 221 to deform the outer wall of the top of the workpiece to complete the processing of the spout.
[0019] In order to control the external shape of the spout part, the upper template is provided with an outer slider 14, the outer slider 14 is provided with an outer concave mold 141 at a position corresponding to the mold core 21, and the outer slider 14 is mounted on the On the second slide rail 142 of the template 13 mentioned above. The outer wall of the auxetic slider 22 matches the inner wall of the outer slider 14 to process the spout into a desired shape.
[0020] Further, the outer slider 14 is equipped with a return spring 143, and the upper mold is reset after the pot body workpiece is processed, and the outer slider 14 returns to the initial position under the action of the return spring 143.
[0021] Further, the upper template 13 or the lower template 23 is provided with a limiting wedge 15, the position of the limiting wedge 15 corresponds to the outer sliding block 14, and the limiting wedge 15 is connected to the outer The opposite surface of the sliding block 14 is an inclined surface, so that the outer sliding block 14 moves along the side surface of the limiting wedge 15 to control the movement path of the die. The inclination angle of the spout processed by the agent follows the limiting position. The angle of the inclined surface of the wedge 15 changes.
[0022] In this embodiment, the opposite surface of the outer slider 14 and the inclined surface of the limiting wedge 15 is a corresponding inclined surface. The contact area between the outer slider 14 and the limiting wedge 15 can be increased to reduce Wear and tear makes the mold durable.
[0023] Preferably, the auxetic slider 22 is provided with a return spring (not shown in the figure). When the pot body workpiece is processed, the upper mold is reset, and the outer slider returns to its original state under the action of the return spring. position.
[0024] In this embodiment, the auxetic wedge 12 is arranged at the central position of the blank holder ring, so that the auxetic slider 22 is moved to the outside of the core, so that the spout of the workpiece protrudes outward.
[0025] In this embodiment, the two opposite surfaces of the auxetic slider 22 and the auxetic wedge 12 are inclined planes, which convert the vertical movement of the auxetic wedge 12 into the horizontal movement of the auxetic slider .
[0026] In this embodiment, the lower mold plate 23 is equipped with a limit support column 24 to prevent the upper mold and the lower mold from excessively damaging the mold.
[0027] In this embodiment, in order to improve the processing quality and make the outer surface of the workpiece smoother, the blank holder ring 11 includes two.
[0028] Of course, the above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered by the protection scope of the present invention.

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