Stainless steel hand mold capable of improving heat preservation performance

Abstract

The utility model belongs to the field of hand molds, and relates to a stainless steel hand mold capable of improving heat preservation. The metal hand mold comprises a metal shell, a heat preservation part is arranged in an inner cavity of the metal shell, the metal shell is provided with a channel allowing the heat preservation part to be injected, the metal shell is further provided with a sealing plug used for sealing the channel, and the end, away from the channel, of the sealing plug is provided with a metal base. The metal shell has good heat conductivity, good temperature uniformity and small temperature gradient, and the heat preservation piece in the inner cavity of the metal shell has heat insulation performance, can reduce heat conduction and plays a role in heat preservation, so that the hand mold is rapidly heated in a heating area and can keep the required temperature for a certain period of time after leaving the heating area. The sealing plug can prevent steam in the environment from entering the inner cavity of the metal shell to affect the heat preservation piece.

Description

Technical Field

[0001] The present application belongs to the field of hand molds, and relates to a stainless steel hand mold with improved thermal insulation. Background Art

[0002] The hand mold is a hand-shaped mold used to produce plastic gloves by dipping. The production process of various liquid-formed plastic gloves is: the ceramic hand mold is dipped in plastic liquid, dried, and demolded. The hand mold used in production should be acid-resistant, alkali-resistant, chemical-resistant, and have a certain degree of heat shock resistance.

[0003] Patent CN102276292B discloses a far-infrared ceramic hand model, in which the outer surface of the ceramic hand model body is covered with a far-infrared ceramic coating. However, the heating speed of the ceramic hand model is slow.

[0004] Therefore, patent CN117621322A discloses a manufacturing method for a metal model for producing nitrile impregnated products and a hand mold thereof, comprising the following steps: separately molding a metal sheet into an upper palm and a lower palm, splicing and welding the upper palm and the lower palm into a palm portion; molding a metal pipe into an arm portion, splicing and welding the arm portion to the palm portion; welding a base to the arm portion to form a hand-shaped mold; sandblasting the hand-shaped mold; and forming an anti-corrosion hardened film layer on the outer surface of the hand-shaped mold through physical or chemical treatment.

[0005] Metal hand molds have good thermal conductivity, so they heat up quickly, but they also cool down quickly compared to ceramic hand molds, which is required for production. However, in the production process of some gloves, it is necessary to ensure that the hand mold is heated quickly in the heating area and can maintain the required temperature for a certain period of time after leaving the heating area. Existing hand molds cannot achieve both. Summary of the invention

[0006] In order to heat the hand mold quickly in the heating area and maintain the required temperature for a certain period of time after leaving the heating area, the present application provides a stainless steel hand mold with improved heat preservation.

[0007] The present application provides a stainless steel hand mold with improved thermal insulation properties, which adopts the following technical solutions:

[0008] A stainless steel hand mold with improved thermal insulation performance comprises a metal shell, an insulation component is arranged in the inner cavity of the metal shell, a channel for injecting the insulation component is opened in the metal shell, and a sealing plug for sealing the channel is also arranged in the metal shell, and the sealing plug has a metal base at one end away from the channel.

[0009] By adopting the above technical solution, the metal shell has good thermal conductivity, good temperature uniformity, and small temperature gradient. The heat preservation component in the inner cavity of the metal shell has heat insulation, which can reduce the conduction of heat and play a role in heat preservation, so that the hand mold can be quickly heated in the heating area and can maintain the required temperature for a certain period of time after leaving the heating area. The sealing plug can prevent moisture in the environment from entering the inner cavity of the metal shell and affecting the heat preservation component.

[0010] Preferably, the metal shell is made of stainless steel, titanium alloy or low carbon steel.

[0011] By adopting the above technical solution, stainless steel, titanium alloy or low carbon steel has good strength and corrosion resistance, and also has good thermal conductivity.

[0012] Preferably, the thickness of the metal shell is 0.3-1.5 mm, and the thickness of the metal shell is uniform everywhere.

[0013] By adopting the above technical solution, the thickness of the metal shell is controlled at 0.3-1.5mm, so that the metal shell can reduce its own weight while ensuring its strength, and the thickness is uniform everywhere, so that the temperature uniformity is better.

[0014] Preferably, the thermal insulation component comprises EVA particles, and the EVA particles are injected into the inner cavity of the metal shell.

[0015] By adopting the above technical solution, the EVA particles have good softness, water absorption, sound absorption, filterability and heat insulation. The softness enables the thermal insulation component to adapt to objects of different shapes and surfaces, and the thermal insulation component has heat insulation so that it can prevent heat conduction and play a role in heat preservation. The thermal insulation component meets the requirements of the present invention for its light material, not easy to age, adaptable to different shapes, and heat preservation characteristics.

[0016] Preferably, the density of the thermal insulation component is 0.028 g / cm, and the 25% compression hardness of the thermal insulation component is 1.9 KPa.

[0017] By adopting the above technical solution, the density of the thermal insulation component is set to 0.028g / cm, and the 25% compression hardness is 1.9KPa, which has the characteristics of light weight and good ductility.

[0018] Preferably, the sealing plug is made of foamed polyethylene.

[0019] By adopting the above technical solution, the sealing plug is made of foamed polyethylene, which closes the channel of the hand mold to prevent the insulation from overflowing. At the same time, the material has many advantages such as waterproof and moisture-proof, shockproof, soundproof, heat-insulating, good plasticity, strong toughness, recycling, environmental protection, and strong impact resistance. It also has good chemical resistance, which can prevent water and gas intrusion in the production line, and avoid corrosion of acid and alkali substances on the line body.

[0020] Preferably, the metal base is made of stainless steel.

[0021] By adopting the above technical solution, the stainless steel metal base has good strength and high thermal conductivity.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The hand mold can be heated quickly in the heating area and can maintain the required temperature for a certain period of time after leaving the heating area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the hand model of the first embodiment of the present application.

[0025] Figure 2 This is a hand model temperature comparison chart of Example 1 of the present application.

[0026] Figure 3 It is a schematic diagram of the partial structure of the hand model of the second embodiment of the present application.

[0027] Figure 4 yes Figure 3 Enlarged view of part A.

[0028] Explanation of the reference numerals: 1. metal shell; 2. heat-insulating component; 3. sealing plug; 4. metal base; 5. sealing plate; 6. annular ring; 7. heat expansion block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, the metal hand mold includes a metal shell 1, a heat-insulating component 2, a sealing plug 3 and a metal base 4.

[0032] Specifically, the metal shell 1 is provided with an inner cavity, and one end of the metal shell 1 is provided with a channel for injecting the heat-insulating element 2 .

[0033] The metal shell 1 is made of stainless steel, titanium alloy or low carbon steel. The thickness of the metal shell 1 is 0.3-1.5 mm, and the thickness of the metal shell 1 is uniform everywhere.

[0034] The metal shell 1 has the characteristics of excellent heat conduction, good temperature uniformity, small temperature gradient, corrosion resistance, resistance to cold and heat shock, corrosion resistance, and oxidation resistance.

[0035] In this embodiment, the thermal insulation member 2 includes EVA particles, which are injected into the inner cavity of the metal shell 1. Specifically, the thermal insulation member 2 is first weighed, and then filled into the inner cavity of the metal shell 1 through the channel, and compacted with a force of 15-20 kg.

[0036] Preferably, the density of the thermal insulation member 2 is 0.028 g / cm, and the 25% compression hardness of the thermal insulation member 2 is 1.9 KPa.

[0037] Specifically, the thermal insulation part 2 is made of 80 parts of ethylene vinyl acetate (EVA), 20 parts of APAO PT 3385, 20 parts of azodicarbonamide, 19 parts of CaCO and 0.6 parts of diisopropylbenzene peroxide, which are mixed together and foamed to form particles. It has good softness, water absorption, sound absorption, filterability and heat insulation, and meets the requirements of the present invention for its light material, not easy to age, adapt to different shapes, and heat preservation. The temperature resistance is between -40°C and 120°C, which is suitable for the temperature range requirements of gloves in the production line.

[0038] Since the heat-insulating member 2 easily absorbs water, it needs to be sealed to prevent the humid air of the production line from entering. The metal shell 1 is also provided with a sealing plug 3 for sealing the channel.

[0039] In this embodiment, the sealing plug 3 is made of foamed polyethylene.

[0040] Specifically, the sealing plug 3 is made of a circular low-density polyethylene foam material and is bonded to the inner cavity of the metal shell 1 by glue to seal the passage and prevent the heat preservation component 2 from overflowing.

[0041] like Figure 1 As shown, the metal base 4 is made of stainless steel, and the metal base 4 is welded to the metal shell 1 and is located on one side of the sealing plug 3. The stainless steel metal base 4 has good strength and high thermal conductivity.

[0042] The working principle of this embodiment is as follows: the metal shell 1 has good thermal conductivity, good temperature uniformity, and small temperature gradient. The heat-insulating member 2 in the inner cavity of the metal shell 1 has heat insulation properties, which can reduce the conduction of heat and play a role in heat preservation. Figure 2 As shown, the temperature reduction of the hand mold of the present application is almost the same as that of ceramics, with a difference of 5 degrees, which is acceptable for production. The hand mold is quickly heated in the heating area and can maintain the required temperature for a certain period of time after leaving the heating area.

[0043] Embodiment 2:

[0044] like Figure 3 , Figure 4 As shown, the sealing plug 3 has a sealing plate 5 at one end close to the metal shell 1, the inner cavity of the metal shell 1 has an annular ring 6, the side wall portion of the sealing plate 5 is in contact with the inner wall of the annular ring 6, and the remaining portion of the side wall of the sealing plate 5 has a heat expansion block 7. When heated, the heat expansion block 7 expands and extends radially, and is in contact with the end face of the annular ring 6. The thermal expansion of the thermal insulation component 2 is not easy to push out the sealing plug 3, thereby improving the sealing performance of the sealing plug 3.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stainless steel hand mold with improved heat preservation, characterized in that: The invention comprises a metal shell (1), wherein a heat-insulating element (2) is arranged in an inner cavity of the metal shell (1), wherein the metal shell (1) is provided with a channel for injecting the heat-insulating element (2), and wherein the metal shell (1) is further provided with a sealing plug (3) for sealing the channel, wherein the sealing plug (3) has a metal base (4) at one end away from the channel.

2. A stainless steel hand mold for improving heat preservation according to claim 1, characterized in that: The metal shell (1) is made of stainless steel, titanium alloy or low carbon steel.

3. A stainless steel hand mold for improving heat preservation according to claim 2, characterized in that: The thickness of the metal shell (1) is 0.3-1.5 mm, and the thickness of the metal shell (1) is uniform at all locations.

4. The stainless steel hand mold for improving heat preservation according to claim 1, characterized in that: The density of the thermal insulation component (2) is 0.028 g / cm2, and the 25% compression hardness of the thermal insulation component (2) is 1.9 KPa.

5. The stainless steel hand mold for improving heat preservation according to claim 1, characterized in that: The sealing plug (3) is made of foamed polyethylene.

6. The stainless steel hand mold for improving heat preservation according to claim 1, characterized in that: The metal base (4) is made of stainless steel.

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