Energy-saving hand mold appearance form implementation method

Abstract

The invention relates to an energy-saving hand mold appearance form implementation method. The method comprises the following steps that S100, a palm part to be machined is prepared; s200, the palm part is fed into a heating wire body to be heated to a preset temperature; s300, the heated palm part is fed into a mold cavity of a hot forming mold, and a texture surface is arranged on the inner wall of the mold cavity; and S400, high-pressure gas is fed from a wrist opening of the palm part, and the palm part is inflated by the high-pressure gas in the hot forming mold so that palm face textures can be formed on the outer surface of the palm part. According to the method, the palm part is inflated and bulged through the high-pressure gas, so that the palm surface texture is formed on the outer surface of the palm part, the palm surface texture of the palm part prepared through the method is fuller and smoother in shape and few in surface defect, the aspect ratio of the palm surface texture can reach 50%, the minimum width of the palm surface texture can reach 0.1 mm, and the palm surface texture is more uniform. Therefore, the consistency of the palm surface texture is realized, and the processing quality of the concave-convex palm surface texture on the outer surface of the palm part is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of hand model production, and in particular to a method for realizing the appearance of an energy-saving hand model. Background Art

[0002] Ultra-thin and ultra-strong are the development requirements of the latex, silicone, PVC, nitrile and other polymer film-forming products industries. Increasing production, reducing energy consumption, and reducing costs, and seeking benefits from energy conservation and consumption reduction are important factors for enterprises to create a good living space and development environment. At present, the glove products industry uses a large number of ceramic models for product production. The characteristics of ceramic material hand models are thick walls, poor thermal conductivity, and slow heating and cooling. These characteristics are important factors causing the industry's high energy consumption.

[0003] Stainless steel hand molds have stable dimensional accuracy, good thermal conductivity, corrosion resistance, and the plates can be made in various thicknesses. These characteristics just meet the requirements of the production of latex, silicone, PVC, nitrile and other products, that is, large-scale production, low processing cost, high production efficiency, light weight, high rigidity and high thermal conductivity, corrosion resistance, high temperature resistance and oxidation resistance, good shock resistance, long life, low maintenance, easy operation, and large profit margins. Therefore, stainless steel hand molds are gradually used in glove production.

[0004] At present, a Chinese patent with application number 2023115768728 discloses a semi-finished metal hand mold and a method for making the palm part of a metal hand mold, which specifically discloses that the palm part is made of stainless steel, and the palm part has a left half of the palm part and a right half of the palm part. When the left half of the palm part and the right half of the palm part are spliced ​​with each other and fixed by welding, the palm part is formed.

[0005] Among them, industrial stainless steel metal hand molds, medical metal hand molds and other products need to be processed on the palm and finger surfaces to form concave and convex textures. The method of achieving this is through large-particle sandblasting. However, the palm adopts a hollow structure. Due to the high pressure and fast jet velocity of sandblasting, when large-particle sand hits the product, it will cause the palm surface to collapse, affecting the processing quality of the concave and convex texture on the palm surface. Therefore, there is room for improvement. Summary of the invention

[0006] In order to improve the processing quality of the concave-convex texture on the palm surface, the present application provides an energy-saving method for realizing the appearance of a hand model.

[0007] The present application provides a method for realizing an energy-saving hand model appearance using the following technical solutions: A method for realizing an energy-saving hand model appearance, comprising the following steps: Step S100, preparing the palm part for processing; Step S200, placing the palm into the heating wire and heating it to a predetermined temperature; Step S300, placing the heated palm into a mold cavity of a thermoforming mold, wherein the inner wall of the mold cavity is provided with a textured surface; Step S400, high-pressure gas is introduced into the palm from the wrist opening, and the palm is inflated by the high-pressure gas in the thermoforming mold to form palm texture on the outer surface of the palm.

[0008] Preferably, the heating line adopts a tunnel heating furnace, and the palm is protected by nitrogen in the tunnel heating furnace; Or the heating wire adopts a medium-high frequency heating furnace.

[0009] Preferably, in step S200, the palm is heated to a predetermined temperature in the heating wire, the predetermined temperature being 700-960°C, and before the palm is sent into the thermoforming mold, the temperature of the palm is constantly maintained at the predetermined temperature.

[0010] Preferably, in step S300, before the heated palm is fed into the mold cavity of the thermoforming mold, the thermoforming mold is preheated to 400-500°C.

[0011] Preferably, in step S400, the palm is inflated by high-pressure gas in a thermoforming mold, the air pressure of the high-pressure gas inflating the palm is 30-70 MPa, and the time for the high-pressure gas to inflate the palm is 10-15 seconds.

[0012] Preferably, the thermoforming die comprises an upper forming die and a lower forming die; The upper forming mold comprises an upper mold plate, an upper mold pad and an upper mold base which are arranged in sequence, an upper mold base is provided with an upper mold cavity, and an upper mounting port which communicates with the upper mold cavity is opened on the upper mold base; the lower forming mold comprises a lower mold plate, a lower mold pad and a lower mold base which are arranged in sequence, a lower mold base is provided with a lower mold cavity, and a lower mounting port which communicates with the lower mold cavity is opened on the lower mold base; The upper model cavity and the upper model cavity are combined to form a mold cavity, and the mold cavity is used to adapt to the palm. The upper mounting port and the lower mounting port are combined to form an inflation mounting cavity. One side of the thermoforming mold is provided with a high-pressure gas filling part for plugging into the inflation mounting cavity.

[0013] Preferably, the high-pressure gas filling part includes a mounting seat and a hydraulic cylinder arranged on the mounting seat, a plunger is installed on the piston rod of the hydraulic cylinder, the plunger cooperates with the inflation mounting cavity, a high-pressure air hole is opened in the plunger, one end of the high-pressure air hole is communicated with the outer wall surface of the plunger, and the other end of the high-pressure air hole is communicated with the end surface of the plunger.

[0014] Preferably, an external thread section is provided at the end of the piston rod of the hydraulic cylinder, and an internal thread hole threadably matched with the external thread section is provided on the plunger.

[0015] Preferably, a guiding cone is provided at one end of the plunger close to the inflation installation cavity, and a gap is maintained between the outer wall surface of the guiding cone and the inner wall surface of the inflation installation cavity, and the gap is larger than the material thickness of the palm part by 0.2mm-0.3mm.

[0016] Preferably, the distance L between the plunger and the mold cavity is 10-15 mm, and the stroke of the plunger driven by the hydraulic cylinder is at least 1 mm greater than the distance L.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: The present application uses high-pressure gas to inflate the palm, thereby forming a palm texture on the outer surface of the palm. The palm prepared in this way has a fuller and smoother palm texture, fewer surface defects, and the aspect ratio of the palm texture can reach 50%. The minimum width of the palm texture can be 0.1mm, thereby achieving consistency in the palm texture, thereby effectively improving the processing quality of the concave and convex palm texture on the outer surface of the palm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of a method for realizing the appearance of an energy-saving hand model.

[0019] Figure 2 It is a schematic diagram of the structure of the palm.

[0020] Figure 3 It is a schematic diagram of the structure of the heating wire.

[0021] Figure 4 It is a schematic diagram of the installation of the thermoforming mold.

[0022] Figure 5 It is a schematic diagram of the separation state of the upper forming mold and the lower forming mold.

[0023] Figure 6 It is a schematic diagram of the closed state of the upper forming mold and the lower forming mold.

[0024] Figure 7 It is a schematic diagram of the palm being inflated and swollen.

[0025] Explanation of the reference numerals: 1. press machine; 2. hot forming die; 21. upper forming die; 211. upper mold plate; 212. upper mold pad; 213. upper mold seat; 214. upper model cavity; 215. upper mounting port; 22. lower forming die; 221. lower mold plate; 222. lower mold pad; 223. lower mold seat; 224. lower model cavity; 225. lower mounting port; 23. high-pressure gas charging part; 231. mounting seat; 232. hydraulic cylinder; 233. plunger; 234. guide cone; 235. high-pressure air hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-7 This application is described in further detail.

[0027] A method for realizing the appearance of an energy-saving hand model, referring to Figure 1 As shown, the following steps are included: Step S100, preparing the palm part for processing.

[0028] According to the technical solution defined in step S100, specifically, the palm portion is made of stainless steel metal material, and the thickness of the stainless steel metal plate is 0.6mm-1.5mm. This embodiment is described by taking the stainless steel metal plate with a thickness of 1mm as an example. After the stainless steel metal plate is cut into square sheets, the stainless steel metal plate is punched and stretched into a left half of the palm portion and a right half of the palm portion. The left half of the palm portion and the right half of the palm portion are spliced ​​to each other and fixed by welding the splicing seam, thereby forming the palm portion.

[0029] Reference Figure 2 As shown, the palm portion includes fingers, palm and wrist from top to bottom, the interior of the palm portion is a hollow structure, and the wrist portion is open, through which the wrist portion can be connected to the interior of the palm portion.

[0030] Step S200, placing the palm into the heating wire and heating it to a predetermined temperature.

[0031] According to the technical solution defined in step S200, specifically, in one embodiment, the heating line body adopts a tunnel heating furnace, and the palm is protected by nitrogen in the tunnel heating furnace. In another embodiment, the heating line body adopts a medium-high frequency heating furnace. In another embodiment, the heating line body adopts a combustible gas heating furnace. The palm can be heated individually or continuously in batches in the heating line body.

[0032] as follows Figure 3As shown, the front section of the heating wire body is the loading area, and the heating wire body has a preheating area, a heating area and a heat preservation area in sequence. The back section of the heating wire body is the forming area. The heating wire body is driven by a conveyor, and the palm is fed into the heating wire body in the loading area, and is sequentially transmitted through the preheating area and the heating area by the conveyor. After the palm is heated, it is clamped by a robot and sent from the heating area to the forming area to form the concave and convex texture on the palm surface.

[0033] In the heating line, the preheating zone is used to preheat the palm, and the palm can be slowly heated in the preheating zone. In the heating zone, the palm is heated to a predetermined temperature, which is 700-960°C. This embodiment takes the predetermined temperature of 700°C as an example for explanation. The closer the predetermined temperature is to the lower limit temperature, the more energy consumption can be saved.

[0034] The palm passes through the heating zone and enters the insulation zone, where the temperature of the palm is kept constant at the predetermined temperature. The palm is heated to 700-960°C and kept warm for a period of time so that the metal structure of the palm can be austenitized as much as possible.

[0035] The time for the palm to be transferred from the loading area to the forming area in the heating line is controlled within 60 seconds. By setting the transmission time of the heating line, it can be coordinated with the forming time of the palm in the forming area, so that the heating efficiency can be reasonably utilized to achieve the effect of saving energy.

[0036] Step S300, placing the heated palm into a mold cavity of a thermoforming mold 2, wherein the inner wall of the mold cavity is provided with a textured surface.

[0037] Step S400, high-pressure gas is introduced into the palm from the wrist opening, and the palm is inflated by the high-pressure gas in the thermoforming mold 2 to form palm texture on the outer surface of the palm.

[0038] According to the technical solution defined by steps S300 to S400, specifically, the palm is clamped by a robot and sent into the mold cavity of the hot forming mold 2. The palm is inflated and formed by high-pressure gas in a hot state. The palm fits on the mold cavity under the pressure of the high-pressure gas. At the same time, the stainless steel metal material of the palm creeps to fill the textured surface on the inner wall of the mold cavity, thereby forming a palm texture on the outer surface of the palm.

[0039] The palm is inflated by high-pressure gas in the hot forming mold 2. The air pressure of the high-pressure gas on the palm is 30-70MPa. The time for the high-pressure gas to inflate the palm is 10-15 seconds. By setting a certain palm inflation holding time, it can ensure that the metal structure of the palm is martensitic as much as possible.

[0040] The elongation of stainless steel metal material at room temperature is only 30% to 40%, while the elongation of stainless steel metal material will increase after heating. Therefore, in this embodiment, the palm is heated to a temperature range of 700-960°C.

[0041] It is worth noting that before the heated palm is sent into the mold cavity of the thermoforming mold 2, the thermoforming mold 2 is preheated to 400-500°C. This embodiment is described by taking the thermoforming mold 2 preheated to 400°C as an example.

[0042] The preheating of the thermoforming mold 2 can be performed intermittently or continuously by using a flame gun, and in order to more accurately control the temperature of the thermoforming mold 2 , a heating tube can be provided in the thermoforming mold 2 .

[0043] The specific structure of the thermoforming die 2 will be described below.

[0044] Reference Figure 4 As shown, the thermoforming mold 2 is arranged in the press 1, and the thermoforming mold 2 includes an upper forming mold 21 and a lower forming mold 22. The upper forming mold 21 is installed on the upper table of the press 1, and the lower forming mold 22 is installed on the lower table of the press 1. The press 1 is used to drive the upper forming mold 21 to move downward to realize the clamping action of the upper forming mold 21 and the lower forming mold 22.

[0045] Reference Figure 5 and Figure 6 As shown, the upper forming mold 21 includes an upper mold plate 211, an upper mold pad 212 and an upper mold base 213 which are arranged in sequence. The upper mold pad 212 is fixed to the lower surface of the upper mold plate 211, and the upper mold base 213 is fixed to the lower surface of the upper mold pad 212. The upper mold base 213 is provided with an upper model cavity 214, and the upper mold base 213 is provided with an upper mounting port 215. The upper mounting port 215 is opened on the side of the upper mold base 213 and extends to the interior of the upper mold base 213. The upper mounting port 215 is communicated with the upper model cavity 214.

[0046] The lower forming mold 22 includes a lower mold plate 221, a lower mold pad 222 and a lower mold base 223 which are arranged in sequence. The lower mold pad 222 is fixed on the upper surface of the lower mold plate 221, and the lower mold base 223 is fixed on the upper surface of the lower mold pad 222. The lower mold base 223 is provided with a lower model cavity 224, and the lower mold base 223 is provided with a lower mounting port 225. The lower mounting port 225 is opened on the side of the lower mold base 223 and extends to the interior of the lower mold base 223. The lower mounting port 225 is communicated with the lower model cavity 224.

[0047] The upper mold cavity 214 and the upper mold cavity 214 are matched to form a mold cavity, and the mold cavity is used to adapt to the palm.

[0048] The upper mounting opening 215 and the lower mounting opening 225 are matched to form an inflation mounting cavity, which is cylindrically arranged and communicated with the wrist opening corresponding to the palm. A high-pressure gas filling part 23 for plugging into the inflation mounting cavity is arranged on one side of the thermoforming mold 2.

[0049] The high-pressure gas charging part 23 includes a mounting seat 231 and a hydraulic cylinder 232 arranged on the mounting seat 231. The cylinder body of the hydraulic cylinder 232 is fixed on the mounting seat 231. The piston rod of the hydraulic cylinder 232 passes through the mounting seat 231. The mounting seat 231 is fixed on the lower template 221. A plunger 233 is installed on the piston rod of the hydraulic cylinder 232. Specifically, an external threaded section is provided at the end of the piston rod of the hydraulic cylinder 232, and an internal threaded hole threadedly matched with the external threaded section is provided on the plunger 233. The plunger 233 is connected to the piston rod of the hydraulic cylinder 232 by threads, so that the plunger 233 can be replaced on the piston rod.

[0050] It is worth noting that the axial direction line of the plunger 233 is located on the axial direction line of the piston rod of the hydraulic cylinder 232, and the plunger 233 and the piston rod are both arranged in the horizontal direction.

[0051] The plunger 233 cooperates with the inflation installation cavity. A guide cone 234 is provided at one end of the plunger 233 near the inflation installation cavity. A gap is maintained between the outer wall of the guide cone 234 and the inner wall of the inflation installation cavity. The gap is greater than the material thickness of the palm 0.2mm-0.3mm. In this embodiment, the material thickness of the palm is 1mm. Since the outer wall of the guide cone 234 is inclined, the maximum value of the gap is 1.2mm. Therefore, the guide cone 234 can be inserted into the wrist opening of the palm. As the plunger 233 is pushed forward, the guide cone 234 can continuously lock the wrist opening of the palm.

[0052] The distance L between the end of the plunger 233 and the wrist of the mold cavity is 10-15mm, and the hydraulic cylinder 232 drives the plunger 233 to move a stroke that is at least 1mm greater than the distance L. This embodiment is described as the distance L between the end of the plunger 233 and the wrist of the mold cavity is 10mm, and the hydraulic cylinder 232 drives the plunger 233 to move a stroke of 12mm.

[0053] A high-pressure air hole 235 is provided in the plunger 233, one end of the high-pressure air hole 235 is communicated with the outer wall surface of the plunger 233, and the other end of the high-pressure air hole 235 is communicated with the end surface of the plunger 233, which is the end surface of the plunger 233 close to the inflation mounting cavity.

[0054] A quick-connect joint is threadedly installed on the outer wall surface of the plunger 233, and the quick-connect joint is connected to one end of the high-pressure air hole 235. An air pipe is connected to the quick-connect joint, and high-pressure gas can be passed into the high-pressure air hole 235 through the air pipe, and then pressed into the inner cavity of the palm through the high-pressure air hole 235, so that the palm is inflated and bulged by the high-pressure gas.

[0055] Therefore, refer to Figure 6 and Figure 7 As shown, after the robot clamps the palm from the heating wire, it quickly puts the palm heated to a preset temperature of 700-960° C. into the lower mold cavity 224 of the lower forming mold 22 .

[0056] The press machine 1 drives the upper forming mold 21 and the lower forming mold 22 to perform a mold closing action, and the palm is pressed tightly in the mold cavity.

[0057] At this time, the plunger 233 moves under the drive of the hydraulic cylinder 232, and the plunger 233 moves to one side of the mold cavity. The guide cone 234 at the end of the plunger 233 is inserted into the wrist opening of the palm and locks the wrist opening of the palm from the inside and outside.

[0058] Subsequently, high-pressure gas is introduced into the high-pressure air hole 235 through the air pipe, and enters the palm through the high-pressure air hole 235 until the air pressure value inside the palm reaches 50MPa. The air pressure value inside the palm is maintained for 10 seconds. The palm is inflated and formed by the high-pressure gas, and the palm is fitted to the mold cavity under the pressure of the high-pressure gas. At the same time, the stainless steel metal material of the palm creeps to fill the texture surface on the inner wall of the mold cavity, thereby forming a palm texture on the outer surface of the palm.

[0059] After the palm texture of the palm is formed, the pressure inside the palm is released. After the pressure release is completed, the plunger 233 retreats, the upper forming mold 21 is lifted, the palm in the mold cavity is taken out, and the next palm processing operation is started.

[0060] 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 method for realizing an energy-saving hand model appearance, characterized in that: The steps include: Step S100, preparing the palm part for processing; Step S200, placing the palm into the heating wire and heating it to a predetermined temperature; Step S300, placing the heated palm into a mold cavity of a thermoforming mold (2), wherein the inner wall of the mold cavity is provided with a textured surface; Step S400, high-pressure gas is introduced into the palm from the wrist opening, and the palm is inflated by the high-pressure gas in the thermoforming mold (2) to form palm texture on the outer surface of the palm.

2. The method for realizing the appearance of an energy-saving hand model according to claim 1, characterized in that: The heating line adopts a tunnel heating furnace, and the palm is protected by nitrogen in the tunnel heating furnace; Or the heating wire adopts a medium-high frequency heating furnace.

3. The method for realizing the appearance of an energy-saving hand model according to claim 1, characterized in that: In step S200, the palm is heated to a predetermined temperature in the heating wire, the predetermined temperature being 700-960°C, and before the palm is sent into the thermoforming mold (2), the temperature of the palm is kept constant at the predetermined temperature.

4. The method for realizing the appearance of an energy-saving hand model according to claim 1, characterized in that: In step S300, before the heated palm is fed into the mold cavity of the thermoforming mold (2), the thermoforming mold (2) is preheated to 400-500°C.

5. The method for realizing the appearance of an energy-saving hand model according to claim 1, characterized in that: In step S400, the palm is inflated by high-pressure gas in the thermoforming mold (2), the air pressure of the high-pressure gas inflating the palm is 30-70 MPa, and the time for the high-pressure gas to inflate the palm is 10-15 seconds.

6. The method for realizing the appearance of an energy-saving hand model according to claim 1, characterized in that: The thermoforming mold (2) comprises an upper forming mold (21) and a lower forming mold (22); The upper forming mold (21) comprises an upper mold plate (211), an upper mold pad (212) and an upper mold base (213) which are arranged in sequence; an upper mold base (213) is provided with an upper mold cavity (214); and an upper mounting port (215) which communicates with the upper mold cavity (214) is provided on the upper mold base (213); the lower forming mold (22) comprises a lower mold plate (221), a lower mold pad (222) and a lower mold base (223) which are arranged in sequence; a lower mold base (223) is provided with a lower mold cavity (224); and a lower mounting port (225) which communicates with the lower mold cavity (224) is provided on the lower mold base (223); The upper model cavity (214) and the upper model cavity (214) are matched to form a mold cavity, and the mold cavity is used to adapt to the palm of the hand. The upper installation port (215) and the lower installation port (225) are matched to form an inflation installation cavity. One side of the thermoforming mold (2) is provided with a high-pressure gas charging part (23) for plugging into the inflation installation cavity.

7. The method for realizing the appearance of an energy-saving hand model according to claim 6, characterized in that: The high-pressure gas charging portion (23) comprises a mounting seat (231) and a hydraulic cylinder (232) arranged on the mounting seat (231); a plunger (233) is installed on the piston rod of the hydraulic cylinder (232); the plunger (233) cooperates with the inflation mounting cavity; a high-pressure gas hole (235) is provided in the plunger (233); one end of the high-pressure gas hole (235) is communicated with the outer wall surface of the plunger (233); and the other end of the high-pressure gas hole (235) is communicated with the end surface of the plunger (233).

8. The method for realizing the appearance of an energy-saving hand model according to claim 7, characterized in that: The end of the piston rod of the hydraulic cylinder (232) is provided with an external thread section, and the plunger (233) is provided with an internal thread hole threadably matched with the external thread section.

9. The method for realizing the appearance of an energy-saving hand model according to claim 7, characterized in that: A guide cone (234) is provided at one end of the plunger (233) close to the inflation installation cavity, and a gap is maintained between the outer wall surface of the guide cone (234) and the inner wall surface of the inflation installation cavity, and the gap is greater than the material thickness of the palm part by 0.2mm-0.3mm.

10. The method for realizing the appearance of an energy-saving hand model according to claim 7, characterized in that: The distance L between the plunger (233) and the mold cavity is 10-15 mm, and the hydraulic cylinder (232) drives the plunger (233) to move a stroke that is at least 1 mm greater than the distance L.

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