Integral Slurry Casting Mold and Forming Method for Ceramic Hand Molds

Abstract

The present invention provides a ceramic hand mold integral slip casting mold and a forming method. The mold is divided into a main mold and an upper mold. The inner cavity of the main mold is in the shape of the main body of the hand mold. The upper mold is buckled at the upper opening of the main mold. There is a slurry injection port in the center, and a protruding edge extends downward to form a groove between it and the inner wall of the main mold. The slurry is injected from the slurry injection port. When the green clay in the main mold reaches a predetermined thickness, the slurry is poured out. At this time, there is still remaining slurry in the groove that cannot be poured out. The mold is inverted until the thickness of the green clay in the groove reaches the thickness of the fixed part of the hand mold, and then demolding is carried out. In this way, the main body part and the fixed seat part of the hand mold can be formed by one-time slip casting, improving the production efficiency.

Description

Technical Field

[0001] The ceramic hand mold mentioned in the present invention is a mold for producing plastic or rubber gloves. The hand mold usually includes the entire hand and a section of the forearm, and the end of the arm serves as a fixed seat for clamping by the equipment. Taking the production of latex gloves as an example: the production equipment clamps the fixed seat at the end of the hand mold arm to suspend the hand mold, and then impregnates the coagulant and latex successively, so that the latex is formed into a film on the surface of the hand mold, and then the finished latex gloves are formed through subsequent processes. The present invention provides an integral injection molding mold and molding method for a ceramic hand mold. Background Art

[0002] As Figure 1 As shown in the cross-sectional view of the hand mold, the complete hand mold includes a main body part composed of a fixed seat part a, a forearm part b, a palm part c, and a finger part d, and usually there is no distinction between left and right hands. Because the fixed seat part a at the end of the hand mold arm needs to be clamped by the equipment and requires higher strength, its thickness is greater than other parts of the hand mold, and the time required for injection molding is longer than that of the main body part. Therefore, it is difficult to form the hand mold by one-time injection molding. In the traditional process, the main body part of the hand mold is formed by injection molding, the fixed seat part is formed by injection molding or rolling, and then the formed green mud of the two is joined together as a whole. This method increases the production process and has low production efficiency. The present invention provides an integral molding method and mold for a hand mold to overcome this defect.

[0003] In addition, in the traditional process, except for the base, the mold of the hand mold uses longitudinal symmetric parting, that is, parting in the thickness direction of the hand. In this way, there is a mold joint line between the fingers of each finger of the hand mold blank, which causes inconvenience for scraping the mold joint line in the subsequent process (because the fingers block each other and the space is limited). The present invention further solves this problem by changing the parting position. Summary of the Invention

[0004] The technical solutions of the integral injection molding mold and molding method of the present invention are as follows, and the mold and molding method are described together.

[0005] The hand mold mold of the present invention is divided into a main mold and an upper mold. The inner cavity of the main mold is in the shape of the hand mold main body. The upper mold is buckled at the upper opening of the main mold, with a pouring port in the center and a protruding edge extending downward to form a groove between it and the inner wall of the main mold. Pour the slurry from the pouring port. When the green mud in the main mold reaches the predetermined thickness, pour out the slurry. At this time, there is still remaining slurry in the groove that cannot be poured out. Invert the mold until the thickness of the green mud in the groove reaches the thickness of the fixed part of the hand mold, and then demold. In this way, the main body part and the fixed seat part of the hand mold can be formed by one-time injection molding, improving the production efficiency.

[0006] A preferred solution is that the main mold is divided into a left mold and a right mold, and the mold joint surface is along the front and back middle plane of the palm. When demolding, first pull out the upper mold longitudinally, and then separate the left mold and the right mold to both sides.

[0007] Another preferred solution is that the main mold is divided into a left palm and arm mold, a right palm and arm mold, and a finger mold. The left palm and arm mold and the right palm and arm mold correspond to the lower arm and most of the palm of the hand mold, and the mold joint surface is along the front-back middle plane of the palm. The finger mold is an integral part, corresponding to all the fingers and a small part of the palm of the hand mold. The mold joint surface with the left and right palm and arm molds is along the base of the fingers of the palm. A part of the outer sides of the thumb and little finger can also be divided into the palm and arm molds. When demolding, first pull out the upper mold and the finger mold longitudinally, and then separate the left palm and arm mold and the right palm and arm mold to both sides. For the mold with this structure, the mold joint surface avoids the position of the finger seams and will not form a mold joint line at the finger seams of the hand mold, which facilitates the subsequent processing operation of scraping off the mold joint line. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic diagram of the hand mold;

[0009] Figure 2 is a three-dimensional schematic diagram of Embodiment 1 of the present invention;

[0010] Figure 3 is a cross-sectional schematic diagram of Embodiment 1 of the present invention;

[0011] Figure 4 is a schematic diagram of the outer surface of Embodiment 2 of the present invention;

[0012] Figure 5 is Figure 4 a cross-sectional view taken along the direction A-A.

[0013] In the figures: a - fixed seat part, b - lower arm part, c - palm part, d - finger part, 1 - main mold, 11 - left mold, 12 - right mold, 13 - left palm and arm mold, 14 - right palm and arm mold, 15 - finger mold, 16 - palm-finger mold joint surface; 2 - upper mold, 21 - grouting port, 22 - groove. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following will specifically describe the implementation solutions of the present invention with reference to the accompanying drawings. Embodiment 1

[0015] As Figure 2 Figure 3 shown. The hand mold is divided into a main mold 1 and an upper mold 2. The inner cavity of the main mold 1 is in the shape of the main body of the hand mold. The upper mold 2 is buckled at the upper opening of the main mold 1. There is a grouting port 21 in the center, and there is a protruding edge extending downward to form a groove 22 between it and the inner wall of the main mold 1. The main mold 1 is divided into a left mold 11 and a right mold 12, and the mold joint surface is along the front-back middle plane of the palm. Pour the slurry through the grouting port 21. When the green clay in the main mold reaches the predetermined thickness, pour out the slurry. At this time, there is still remaining slurry in the groove 22 that cannot be poured out. Invert the mold until the thickness of the green clay in the groove 22 reaches the thickness of the fixed part of the hand mold; demold, pull out the upper mold 2 longitudinally, and then separate the left mold 11 and the right mold 12 to both sides. Embodiment 2

[0016] AsFigure 4 and Figure 5 。The difference between this embodiment and Embodiment 1 is as follows: The master mold 1 is divided into a left palm and arm mold 13, a right palm and arm mold 14, and a finger mold 15. The left palm and arm mold 13 and the right palm and arm mold 14 correspond to the forearm and most of the palm of the hand mold, and the mold clamping surface is along the front-back middle plane of the palm; the finger mold 15 is an integral body, corresponding to all the fingers and a small part of the palm of the hand mold, and the mold clamping surface 16 of the finger and palm of the left and right palm and arm molds is along the near finger root of the palm and a part of the outer sides of the thumb and little finger is arranged in the palm and arm mold. When demolding, first pull out the upper mold 2 and the finger mold 15 longitudinally, and then separate the left palm and arm mold 13 and the right palm and arm mold 14 to both sides. Others are the same as in Embodiment 1. For the mold with this structure, the mold clamping surface avoids the finger gap position and will not form a mold clamping line at the finger gap of the hand mold, which facilitates the subsequent processing procedure of scraping the mold clamping line.

Claims

1. An integrally formed slip casting mold for a ceramic hand mold, characterized in that: It is divided into a main mold (1) and an upper mold (2); the inner cavity of the main mold (1) is in the shape of the main body of the hand mold; the upper mold (2) is buckled at the upper opening of the main mold (1), there is a grouting port (21) in the center, and there is a protruding edge extending downward to form a groove (22) between it and the inner wall of the main mold.

2. The integrally formed slip casting mold for a ceramic hand mold according to claim 1, characterized in that: The main mold (1) described above is divided into a left mold (11) and a right mold (12).

3. The integrally formed slip casting mold for a ceramic hand mold according to claim 1, characterized in that: The main mold (1) described above is divided into a left palm and arm mold (13), a right palm and arm mold (14) and a finger mold (15); the left palm and arm mold (13) and the right palm and arm mold (14) correspond to the forearm and most of the palm of the hand mold, and the mold joint surface is along the front and back middle plane of the palm; the finger mold (15) is an integral body, corresponding to all the fingers and a small part of the palm of the hand mold, and the finger and palm mold joint surface (16) of the left and right palm and arm molds is along the near finger root of the palm.

4. A method for integrally slip casting a ceramic hand mold, characterized in that: Using the one-piece injection molding mold for a ceramic hand mold of claim 2, inject slurry from the grouting port (21), pour out the slurry when the green clay in the main mold (1) reaches a predetermined thickness, invert the mold and use the remaining slurry in the groove (22) until the thickness of the green clay in the groove (22) reaches the thickness of the fixed part of the hand mold; demold, first pull out the upper mold (2) longitudinally, and then separate the left mold (11) and the right mold (12) to both sides.

5. A method for integrally slip casting a ceramic hand mold, characterized in that: Using the one-piece injection molding mold for a ceramic hand mold of claim 3, inject slurry from the grouting port (21), pour out the slurry when the green clay in the main mold (1) reaches a predetermined thickness, invert the mold and use the remaining slurry in the groove (22) until the thickness of the green clay in the groove (22) reaches the thickness of the fixed part of the hand mold; demold, first pull out the upper mold (2) and the finger mold (15) longitudinally, and then separate the left palm and arm mold (13) and the right palm and arm mold (14) to both sides.

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