CN111483100A - A curly flowerpot and its forming method - Google Patents

Abstract

The invention relates to a curled pot mouth flowerpot and a forming method thereof, wherein the lower part of the flowerpot is extruded and shaped through an inner cavity groove of a compression mould, the upper part of the flowerpot is extruded into a natural shape and can be pinched by hands, the problem that the traditional compression-molded product cannot be demoulded due to small mouth and big belly is solved, the manufacturing process is simple and efficient, the product has no parting line flaws, and the product is more natural and beautiful.

Description

A curly flowerpot and its forming method

technical field

The invention relates to a curled pot mouth flowerpot and a molding method thereof, a curled pot mouth flowerpot with uneven wall thickness, different heights, natural inward curling, eversion and wavy characteristics, and a molding method thereof.

Background technique

As a flower planting container, flower pots are widely used in various greening and decoration projects. The top of the pot mouth of conventional flower pots is generally a regular plane, and the appearance is relatively rigid, and it lacks natural elements as high-end decoration.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention proposes a flower pot with a curled pot mouth and a molding method thereof. The flower pot adopts the principle of thermoplastic molding, and is based on the molding concept of conventional compression molding molds. Half-pressed and half-extruded to form the pot blank, and finally hand-shaped. The upper edge of the formed flowerpot presents more vivid and natural shapes such as involute, eversion and undulating wave shape, so that the product has the function of traditional flowerpot use and can also be used as home decoration and craft display supplies.

The object of the present invention is achieved in this way:

A curled pot mouth flowerpot and a molding method thereof, the specific operation process is as follows:

First, according to the traditional extrusion process, the environmental protection plastic particles, calcium powder, and additives (pigments, anti-UV materials, etc.) with a ratio of 100:50:3 are mixed uniformly and then added to the extruder. After heating, Plasticized into a high-temperature plastic paste, the high-temperature plastic paste is extruded through the die head of the extruder; then the high-temperature plastic paste with a weight of 110% to 150% of the volume of the shaped basin is weighed and placed on the lower punch with an inner cavity groove. The concave die and punch fixed on the hydraulic press are closed. During the closing process of the die, the gap between the die is continuously reduced, and the high-temperature plastic paste is squeezed to flow in the shaped basin, and is gradually formed into a flower pot blank from the bottom of the basin to the mouth of the basin. , When the high temperature plastic paste flows to the position of the inner cavity groove, the mold gap suddenly increases, the thrust of the high temperature plastic paste weakens, and it begins to extrude and diffuse in the inner cavity groove in a natural state, but does not touch the inner cavity groove bottom. When the punch and die are tightly closed, the plastic paste in the pelvic cavity is squeezed and shaped through the inner wall of the die and the outer wall of the punch. The demoulding of the pot blank is affected by factors such as wall thickness or shape. Finally, the punch and die are separated, and the pot blank is taken out. At this time, the lower part of the pot blank is shaped, the upper part is in a natural state of high temperature, the wall thickness is uneven, and the local part is naturally curled. The undulating wave shape such as eversion, and finally natural cooling and shaping.

The advantages of the present invention are:

1. The curled pot mouth flowerpot is realized by extrusion and shaping of the lower part of the flowerpot through the inner cavity groove of the compression molding die, and the upper part is extruded into a natural shape and finished by hand-kneading, and the molding process is simple.

2. The molding process of the curled pot mouth flowerpot solves the problem that the conventional compression molding process cannot release the inner buckle of the pot mouth and the products with a small mouth and a large belly.

3. The curled pot mouth flowerpot and its forming method overcome the defect of overflowing edge of conventional compression molding products, and create a product without parting line.

Description of drawings

In order to illustrate the technical solutions proposed by the present invention more clearly, the following drawings are provided as a reference to describe the contents of the invention in more detail.

Figure 1 is a schematic diagram of the structure of the molding die.

Figure 2 is a schematic diagram of forming a flowerpot with a curled pot mouth.

Figure 3 is a schematic diagram of the appearance of a flowerpot with a curled pot mouth.

Figure 4 is a schematic diagram of the appearance of an oval and square curly pot mouth flowerpot.

Figure 5 is a schematic diagram of the appearance of a flowerpot with a natural pot mouth with an inner buckle.

Figure 6 is a schematic diagram of the appearance of a natural pot mouth flowerpot

In the drawings: 1. Concave die, 2. Punch die, 3. Inner cavity groove, 4. Plastic paste, 5. Shaped pelvic cavity, 6. Basin blank.

Detailed ways

The present invention is further described below through specific embodiments, but the present invention is not limited to the following examples.

Example 1

Figure 2 is a schematic diagram of the forming of the curled pot mouth flowerpot, and the forming process is as follows:

According to the traditional extrusion process, the environmentally friendly plastic particles, calcium powder, and additives (pigments, anti-UV materials, etc.) with a ratio of 100:50:3 are mixed uniformly and then added to the extruder. The plastic particles are heated in the extruder, Plasticized into a high-temperature plastic paste 4, and the high-temperature plastic paste is extruded through the die head of an extruder. Then weigh the high-temperature plastic paste 4 with a weight of 110% to 150% of the volume of the shaping basin 5 and place it on the punch 2 with the inner cavity groove at the bottom, and close the punch 1 and punch 2 fixed on the hydraulic press. During the closing process of the mold, the gap between the molds is continuously reduced, and the high-temperature plastic paste 4 is squeezed and flows in the shaped pot cavity 5, and is gradually formed into a flower pot pot blank from the bottom of the pot to the pot mouth. When the high-temperature plastic paste flows into the inner cavity groove 3 When the position of the mold is suddenly increased, the thrust of the high-temperature plastic paste is weakened, and it begins to extrude and diffuse in the inner cavity groove 3 in a natural state, but it will not touch the bottom of the inner cavity groove 3. When the punch 2 and the punch 1 are tightly closed, the plastic paste in the shaping basin is squeezed and shaped through the inner wall of the punch and the outer wall of the punch, and the plastic paste in the inner cavity groove 3 is not squeezed and shaped, and is in a natural state of high temperature , it will not affect the demoulding of the pot blank 6 due to factors such as wall thickness or shape. Then the punch and die are separated, and the pot blank 6 is taken out. At this time, the lower part of the pot blank is shaped, the upper part is in a natural state of high temperature, the wall thickness is uneven, and the local part is naturally curled, and then the mouth of the pot blank is modified by hand. , valgus and other high and low undulating waves, and finally natural cooling to shape. The appearance of the curly pot mouth flowerpot after shaping is shown in Figure 3. In addition, the upper part of the pot blank 6 taken out from the mold is in a high temperature state, and the shape of the pot mouth can also be changed by manual manipulation, so that the shape of the pot mouth is oval, square or other special shapes as shown in FIG. 4 .

Example 2

Referring to the molding process of Example 1, the step of hand-holding can also be removed, and the pot blank 6 is taken out from the mold with grooves and then cooled naturally. The middle basin mouth will shrink inward. Referring to Figure 5, the shaped basin mouth presents a natural wavy appearance with an inner buckle.

Example 3

Referring to the molding process of Example 1, the weight of the plastic paste taken can also be 30%-90% of the volume of the shaping pelvic cavity 5, and during the process of closing the punch and the concave dies, the plastic paste is only squeezed in the shaping pelvic cavity 5. The pressure flow molding does not overflow into the inner cavity groove 3, so the formed flowerpots are all shaped by the mold. The height of the formed flowerpots changes according to the weight of the plastic paste. Wavy features. As shown in Figures g, h, and j in Figure 6, the natural pot mouth flowerpot appearance is formed by the weight of the weighed plastic paste being 30% to 90% of the volume of the shaped pot cavity 5.

Claims (6)

1. A curled pot mouth flowerpot and a forming method thereof comprise the following steps:

(1) uniformly mixing environment-friendly plastic particles, calcium powder and an auxiliary agent (pigment, anti-UV material and the like) in a ratio of 100:50:3 according to a traditional extrusion molding process, adding the mixture into an extruder, heating and plasticizing the mixture in the extruder to obtain high-temperature plastic paste 4, and extruding the high-temperature plastic paste through a die head of the extruder; (2) weighing high-temperature plastic paste 4 with the weight of 110-150% of the volume of the shaped basin cavity 5, placing the high-temperature plastic paste on a male die 2 with an inner cavity groove 3 at the lower part, closing a female die 1 and the male die 2 fixed on a hydraulic press, wherein in the process of closing the die, the gap between the dies is continuously reduced, the high-temperature plastic paste 4 is extruded to flow in the shaped basin cavity 5 and is gradually formed into a flowerpot blank 6 from the bottom of the basin to the opening of the basin, when the high-temperature plastic paste flows to the position of the inner cavity groove 3, the gap between the dies is suddenly increased, the thrust borne by the high-temperature plastic paste is weakened, and the high-temperature plastic paste starts to be extruded and; when the male die 2 and the female die 1 are tightly closed, the plastic paste in the shaping basin cavity is extruded and shaped through the inner wall of the female die and the outer wall of the male die, the plastic paste in the inner cavity groove 3 is not extruded and shaped and is in a high-temperature natural state, and the demoulding of the basin blank 6 cannot be influenced by the wall thickness or the shape and other factors; separating the male die and the female die, taking out the basin blank 6, shaping the lower part of the basin blank at the moment, enabling the upper part of the basin blank to be in a high-temperature natural state, enabling the wall thickness to be uneven and enabling the part of the basin blank to be naturally curled, then manually holding and pinching the mouth of the basin blank to be modified into waves with high and low fluctuation such as inward rolling and outward turning, and finally naturally cooling and shaping.

2. A curled lip pot according to claim 1, wherein the pot mouth is in a natural state of uneven thickness and undulation, and exhibits natural shape characteristics of inward rolling, outward rolling and undulation as shown in fig. 3.

3. A curled pot according to claim 1, wherein the shape of the mouth of the pot is formed into an oval, square or other shape as shown in fig. 4 by hand kneading.

4. A curled pot according to claim 1, wherein the formed pot blank is directly passed through a mould having an inner cavity groove 3 without being manually held to form an internally-buckled natural pot as shown in fig. 5.

5. A curled pot mouth flowerpot and a forming method thereof according to claim 1, wherein the weight of the plastic paste weighed in the step (2) can also be 30% -90% of the volume of the shaped pot cavity 5, in the process of tightly closing the male die and the female die, the plastic paste is extruded and flows only in the shaped pot cavity 5 and does not overflow into the inner cavity groove 3, so that the formed flowerpot is shaped through the die, the height of the formed flowerpot is changed according to the weight of the weighed plastic paste, and the pot mouth has the wave-shaped characteristics of uneven wall thickness and undulation; as shown in figure 6, figure g, figure h and figure j show the appearance of the natural pot mouth flowerpot which is formed by weighing 30 to 90 percent of the plastic paste to the volume of the shaped pot cavity 5.

6. A curled pot according to claim 1, and a method for forming the same, referring to FIG. 1, wherein the bottom of the male mould 2 for forming is formed with an inner cavity groove 3, and the height of the inner cavity groove 3 is about one fifth to four fifths of the height of the product.

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