Automobile cushion foaming sponge forming mold capable of balancing temperature difference

Abstract

The invention relates to the technical field of automobile seat cushion production, in particular to an automobile seat cushion foaming sponge forming mold capable of balancing temperature difference. The device comprises a supporting base, a plurality of foaming molds are installed on the upper side of the supporting base, a turnover frame is arranged on one side of each foaming mold, a top cover corresponding to the foaming molds is installed on the turnover frame, the top cover is pressed and covered on the upper sides of the foaming molds in a turnover mode, and a partition piece, an upper guide piece and a lower guide piece are sequentially arranged in each foaming mold from top to bottom. The hot liquid is added into the heating space through the main water inlet pipe, the hot liquid heats the forming mold, the hot liquid entering the heat preservation space conducts heat preservation on the lower side of the heating space, and the position, away from the main water inlet pipe, of the heating space is heated; meanwhile, the hot liquid in the heat preservation space enters the drainage area to increase the temperature of the drainage area, so that the temperature difference in the heating space is reduced, and it is ensured that the foaming degree of foam rubber in the forming mold is consistent.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat cushion production, in particular to an automobile seat cushion foaming sponge forming die capable of achieving a balanced temperature difference. Background Art

[0002] During the production process of car seat cushions, high-resilience (HR) polyurethane foam glue is sprayed into the car seat cushion mold (hereinafter referred to as foam glue), and then the foam glue is expanded to form the shape of the cushion. At present, in order to ensure the foaming degree of the foam glue and make the size and hardness of the produced car seat cushion meet the production needs, the mold is preheated by passing hot liquid to make the mold reach 40-60 degrees Celsius. After the foam glue is sprayed into the mold, the preheated mold can increase the foaming degree of the foam glue, but when the mold is opened or demolded, the heat on it diffuses outward faster, which will lower the temperature of the mold itself. In the process of hot liquid flowing in the mold, the mold will absorb the heat of the hot liquid, causing the temperature of the hot liquid to drop, especially when the hot liquid moves to the end of the mold away from the water inlet position. The temperature of the liquid may drop by 5-6 degrees Celsius, and when the hot liquid cools down, the temperature on the mold will be inconsistent. When the temperature in the mold is inconsistent, the foam glue at various positions in the mold will have inconsistent foaming degrees due to different temperatures. The inconsistent foaming degree will affect the expansion of the foam glue, causing the high temperature areas to react too quickly and prematurely solidify and form a crust, and form voids inside. The low temperature areas react slowly, become sticky inside, and have reduced strength. After demolding, they will shrink and deform. During demolding, it is easy for the high temperature area to harden and the low temperature area to tear or leave residual parts in the mold, making the car seat cushions uneven in softness and hardness, thereby affecting the production quality of the car seat cushions. Therefore, a mold is needed to offset the problem of temperature drop of hot liquid during transmission. Summary of the Invention

[0003] The purpose of the present invention is to provide a car seat cushion foam sponge forming mold that can balance temperature differences, so as to solve the problem proposed in the above background technology that the mold is cooled during demoulding and mold opening, and the cooled mold absorbs heat, resulting in temperature differences inside the mold.

[0004] To solve the above-mentioned problem, a car seat cushion foam sponge forming mold capable of achieving a uniform temperature difference is provided, comprising a support base, a plurality of foaming molds being mounted on the upper side of the support base, a flip frame being provided on one side of the foaming molds, a top cover corresponding to the foaming mold being mounted on the flip frame, the top cover being flipped and pressed against the upper side of the foaming mold, and a partition, an upper guide, and a lower guide being provided in order from top to bottom inside the foaming mold; The foaming mold includes a mold shell and a forming mold arranged at the top position of the mold shell. The upper guide and the mold shell are combined to form a heating space for heating the forming mold. The upper guide and the lower guide are combined to form an insulation space. One side of the mold shell is connected to a main water inlet pipe. External hot liquid enters between the upper guide and the mold shell through the main water inlet pipe. At the same time, the partition and the upper guide cooperate to guide the hot liquid entering the inside of the mold shell to the side away from the water inlet position of the mold shell. At the same time, hot liquid enters between the lower guide and the upper guide to heat the upper guide. At the same time, the space formed between the upper guide and the lower guide guides the hot liquid to flow to the side of the mold shell away from the main water inlet pipe. The flowing hot liquid moves to the upper side of the upper guide and mixes with the hot liquid on the side of the mold shell away from the main water inlet pipe.

[0005] As a further improvement of the present technical solution, the upper guide member includes an upper guide arc plate, and the lower guide member includes a lower guide arc plate. The edges of the upper guide arc plate and the lower guide arc plate are both high at the four corners and concave downward in the middle of the side edges, and the side walls of the upper guide arc plate and the lower guide arc plate are in close contact with the side walls of the mold shell through rubber pads.

[0006] As a further improvement of the present technical solution, an upper guide cone tube is connected to the lower side of the middle position of the upper guide arc plate, and the upper guide cone tube gradually narrows toward the end away from the upper guide arc plate. A lower guide cone tube is connected to the lower side of the middle position of the lower guide arc plate, and the lower guide cone tube gradually narrows toward the end away from the lower guide arc plate. At the same time, the diameter of the lower guide cone tube is larger than the diameter of the upper guide cone tube. A sealing plate is welded to the bottom of the lower guide cone tube, and an eccentric socket is provided on the sealing plate. One end of the upper guide cone tube passes through the socket and is fixed with a liquid outlet pipe. The outer wall of the upper guide cone tube and the side wall of the socket are in close contact through a sealing gasket.

[0007] As a further improvement of the present technical solution, the socket is opened on the side of the sealing plate close to the main water inlet pipe, and the bottom of the sealing plate away from the main water inlet pipe is fixedly connected with a secondary water inlet pipe. The diameter of the secondary water inlet pipe is smaller than the diameter of the main water inlet pipe, and the diameter of the liquid outlet pipe is larger than the diameter of the main water inlet pipe.

[0008] As a further improvement of the present technical solution, the space between the upper guide cone tube and the lower guide cone tube close to the main water inlet pipe is smaller than the space between the upper guide cone tube and the lower guide cone tube away from the main water inlet pipe, and a plurality of main through grooves are provided on the upper guide arc plate at a position away from the main water inlet pipe, and a plurality of secondary through grooves are provided on the upper guide arc plate at a position close to the main water inlet pipe. The number of the secondary through grooves is less than the number of the main through grooves, and the hot liquid entering from the secondary water inlet pipe into the space between the upper guide cone tube and the lower guide cone tube enters into the space on the upper side of the upper guide member from the main through groove and the secondary through groove respectively.

[0009] As a further improvement of the present technical solution, the upper guide arc plate is provided with positioning grooves that are adapted to the shapes of the four corners of the bottom of the forming mold. When the upper guide member is installed inside the mold shell, the four corners of the bottom of the forming mold are set in the positioning grooves, and the forming mold divides the upper side of the upper guide member into side areas, middle areas, water inlet areas and drainage areas. At the same time, there are gaps between the four sides of the bottom of the forming mold and the upper guide arc plate, and the gaps are used for hot liquid circulation.

[0010] As a further improvement of the present technical solution, the partition includes two side partition plates fixed on the bottom of the forming mold to seal the connecting position between the side area and the middle area. A middle partition plate is fixed between the two side partition plates. The side wall of the middle partition plate and the upper guide cone tube are sealed by a rubber pad. A guide tube is fixed on the lower side of the middle position of the middle partition plate, and the hot liquid entering the heating space is discharged through the guide tube.

[0011] As a further improvement of the present technical solution, the side wall of the guide pipe near the bottom is in close contact with the rubber pad and the inner wall of the upper guide cone pipe near the bottom, and a liquid baffle is fixed on the upper side of the upper guide arc plate near the main water inlet pipe. The liquid baffle reduces the channel size between the water inlet area and the middle area. Part of the hot liquid entering the heating space enters the middle area through the water inlet area, and part of the hot liquid enters the drainage area through the water inlet area and the side area, and then enters the middle area through the drainage area. The hot liquid entering the middle area transports water to the liquid outlet pipe through the guide pipe and the upper guide cone pipe.

[0012] As a further improvement of the present technical solution, the secondary water inlet pipe transports the hot liquid to the insulation space. Part of the hot liquid that enters the insulation space heats the side of the upper guide arc plate away from the main water inlet pipe, and enters the drainage area through the main through groove. Part of the hot liquid moves toward the upper guide arc plate close to the side wall of the main water inlet pipe, and enters the water inlet area through the secondary through groove.

[0013] As a further improvement of the present technical solution, connecting blocks are fixed at the four corners of the top of the mold shell, and upper connecting blocks with the same cross-sectional shape as the connecting blocks are fixed at the four corners of the upper guide arc plate. When the upper guide is installed inside the mold shell, the upper connecting blocks and the connecting blocks are in contact and fixedly connected by bolts. Lower connecting blocks with the same cross-sectional shape as the upper connecting blocks are fixed at the four corners of the lower guide arc plate. When the lower guide is installed inside the mold shell, the lower connecting blocks and the upper connecting blocks are in contact and fixedly connected by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the car seat cushion foam sponge molding mold that can balance the temperature difference, hot liquid is added to the heating space through the main water inlet pipe, so that the hot liquid heats the molding mold, and the hot liquid entering the insulation space insulates the lower side of the heating space and heats the position of the heating space away from the main water inlet pipe. At the same time, the hot liquid in the insulation space enters the drainage area to increase the temperature of the drainage area, thereby reducing the temperature difference inside the heating space, ensuring that the foaming degree of the foam glue in the molding mold is consistent, and ensuring that the produced car seat cushions are soft and hard.

[0015] 2. In the automobile seat cushion foam sponge forming mold that can balance the temperature difference, in the process of introducing hot liquid into the heating space, the partition blocks the hot liquid entering the heating space, so that most of the hot liquid entering the heating space moves away from the main water inlet pipe. At the same time, due to the spatial difference between the upper guide and the lower guide, most of the hot liquid passing through the secondary water inlet pipe moves away from the main water inlet pipe and enters the heating space, thereby improving the temperature drop amplitude of the heating space away from the main water inlet pipe, reducing the temperature difference in the heating space, and ensuring the temperature balance of the forming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the combined structure of the foaming mold, separator, upper guide, and lower guide of the present invention; Figure 3 This is one of the schematic cross-sectional views of the combined structure of the foaming mold, the separator, the upper guide, and the lower guide of the present invention; Figure 4 This is the second schematic cross-sectional view of the combined structure of the foaming mold, the separator, the upper guide, and the lower guide of the present invention; Figure 5 This is a schematic diagram of the explosion structure of the foaming mold, separator, upper guide and lower guide of the present invention; Figure 6 It is a schematic structural diagram of the foaming mold of the present invention; Figure 7 Schematic diagram of the combined structure of the separator, upper guide and lower guide of the present invention; Figure 8 Schematic diagram of the separator structure of the present invention; Figure 9 It is a schematic diagram of the upper guide structure of the present invention; Figure 10 This is one of the schematic diagrams of the lower guide structure of the present invention; Figure 11 This is the second schematic diagram of the lower guide structure of the present invention; Figure 12 This is a schematic diagram of the bottom support plate structure of the present invention; Figure 13 This is one of the schematic diagrams of the hydrothermal flow of the present invention; Figure 14 This is the second schematic diagram of the hydrothermal flow of the present invention; Figure 15 This is the third schematic diagram of the hydrothermal flow of the present invention.

[0017] The meaning of each number in the figure is: 1. Support base; 2. Foaming mold; 21. Mold shell; 22. Main water inlet pipe; 23. Connecting block; 3. Turning rack; 4. Separator; 41. Middle partition plate; 42. Side partition plate; 43. Guide tube; 5. Upper guide; 51. Upper guide arc plate; 52. Upper guide cone; 53. Liquid outlet pipe; 54. Secondary through groove; 55. Main through groove; 56. Liquid baffle; 57. Positioning groove; 58. Upper connecting block; 6. Lower guide; 61. Lower guide arc plate; 62. Lower guide cone; 63. Auxiliary water inlet pipe; 64. Socket; 65. Lower connecting block; 7. Bottom supporting plate; 71. Connecting hole. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] See also Figures 1-6As shown, the purpose of this embodiment is to provide a car seat cushion foam sponge forming mold that can balance the temperature difference, including a supporting base 1, a plurality of foaming molds 2 are installed on the upper side of the supporting base 1, and a flip frame 3 is provided on one side of the foaming mold 2. A top cover corresponding to the foaming mold 2 is installed on the flip frame 3, and the top cover is pressed on the upper side of the foaming mold 2 by flipping. The flip frame 3 can be flipped by a hydraulic cylinder or an electric push rod. This content is not a problem to be solved by this solution, and no further statements are made here. The foaming mold 2 includes a mold shell 21 and a molding mold arranged at the top position of the mold shell 21. The operator sprays foam glue on the preheated molding mold and the top cover, and then controls the flip frame 3 to drive the top cover to press on the molding mold, so that the molding mold and the top cover are sealed. At this time, the foam glue begins to expand between the molding mold and the top cover. At the same time, the preheated molding mold can accelerate the foaming of the foam glue, thereby improving the molding quality. The foaming degree of the foam glue is high, but when the foaming mold 2 and the turning frame 3 are opened for mold opening or demoulding, the molding mold is exposed to the air, and the heat on it will be lost faster. Although the hot liquid is continuously transported to the foaming mold 2, as the hot liquid flows in the foaming mold 2, the hot liquid will be absorbed by the molding mold and the temperature will drop. Especially in the area of ​​the molding mold that is far away from the hot liquid entry position, the cooling of the hot liquid is obvious. When the cooled hot liquid heats the molding mold, it will also affect the temperature difference on the molding mold, thereby causing the temperature inside the molding mold to be uneven. Under the condition of uneven temperature on the molding mold, the foam glue sprayed into the molding mold has inconsistent foaming degree, making the produced car seat cushion soft and hard uneven, and also easily causing problems with the foam glue foaming and affecting the demoulding of the foam glue. In order to solve the temperature difference inside the foam mold 2 due to the cooling of the foam mold 2 when opening the mold or demoulding, the improvement points of this solution are: A partition 4, an upper guide 5 and a lower guide 6 are sequentially arranged inside the foaming mold 2 from top to bottom. A heating space for heating the forming mold is formed between the upper guide 5 and the mold shell 21. A heat preservation space is formed between the upper guide 5 and the lower guide 6. The heating space and the heat preservation space are connected. A main water inlet pipe 22 is connected to one side of the mold shell 21. The main water inlet pipe 22 is connected to the heating space. A pipe for transporting hot liquid is connected to the main water inlet pipe 22. The external hot liquid enters the upper guide 5 and the mold shell through the main water inlet pipe 22. The hot liquid enters the heating space between the mold shells 21, and the partition 4 and the upper guide 5 cooperate to guide the hot liquid entering the mold shell 21 to the side away from the water inlet position of the mold shell 21. The hot liquid entering the heating space heats the heating space. The heating space will increase the temperature on the molding mold during the heating process, thereby preheating the molding mold. At the same time, in order to avoid the hot liquid entering the heating space from cooling down, a pipe is also connected to the lower guide 6, which also transports hot liquid. The hot liquid transported by the pipe is transported to the lower guide 6, and at the same time, the hot liquid enters between the lower guide 6 and the upper guide 5 to heat the upper guide 5, so that the hot liquid can heat the upper guide 5, so that the hot liquid in the insulation space has an insulation effect on the hot liquid in the heating space, and the space formed between the upper guide 5 and the lower guide 6 guides the hot liquid to flow to the side of the mold shell 21 away from the main water inlet pipe 22, so that most of the hot liquid entering the insulation space flows to the position of the heating space away from the main water inlet pipe 22, thereby achieving the effect of the hot liquid on the low temperature in the heating space. At the same time, the flowing hot liquid moves to the upper side of the upper guide 5 and mixes with the hot liquid on the side of the mold shell 21 away from the main water inlet pipe 22. After the hot liquids are mixed, the hot liquid with a higher temperature in the heat preservation space will increase the temperature of the hot liquid on the side of the heating space away from the main water inlet pipe 22. In this way, the temperature of the hot liquid in the heating space is balanced, thereby ensuring the temperature balance on the molding mold, ensuring that the foaming degree of the foam glue sprayed onto the molding mold remains consistent, and ensuring that the produced car seat cushions are balanced in softness and hardness.

[0021] The following is a detailed description of the structure of this plan: refer to Figure 7 、 Figures 9-11As shown, the upper guide 5 includes an upper guide arc plate 51, and the lower guide 6 includes a lower guide arc plate 61. The edge positions of the upper guide arc plate 51 and the lower guide arc plate 61 are all high at the four corners and concave downward in the middle of the side, and the side walls of the upper guide arc plate 51 and the lower guide arc plate 61 are in close contact with the side walls of the mold shell 21 through rubber pads. The rubber pads are used to seal the upper guide arc plate 51 and the mold shell 21, as well as the lower guide arc plate 61 and the mold shell 21, to prevent hot liquid entering the heating space and the insulation space from flowing out from the gaps. At the same time, connecting blocks 23 are fixed at the four corners of the top of the mold shell 21, and upper connecting blocks 5 having the same cross-sectional shape as the connecting blocks 23 are fixed at the four corners of the upper guide arc plate 51. 8. When the upper guide 5 is installed inside the mold shell 21, the upper connecting block 58 is in contact with the connecting block 23 and is fixedly connected by bolts. The four corners of the lower guide arc plate 61 are fixed with lower connecting blocks 65 having the same cross-sectional shape as the upper connecting block 58. When the lower guide 6 is installed inside the mold shell 21, the lower connecting block 65 is in contact with the upper connecting block 58 and is fixedly connected by bolts. During installation, the operator first fixes the upper guide arc plate 51 inside the mold shell 21, and then fixes the lower guide arc plate 61 inside the mold shell 21. At the same time, when the lower guide arc plate 61 is fixed, the upper guide arc plate 51 and the lower guide arc plate 61 are fixedly connected, so as to improve the stability of the connection between the upper guide 5 and the lower guide 6.

[0022] In order to facilitate the stable connection between the upper guide arc plate 51 and the forming mold during installation, positioning grooves 57 that are compatible with the shapes of the four corners of the bottom of the forming mold are opened on the upper guide arc plate 51. When the upper guide member 5 is installed inside the mold shell 21, the four corners of the bottom of the forming mold are set in the positioning grooves 57. The four positioning grooves 57 correspond to the four corners of the bottom of the forming mold respectively, so that the upper guide arc plate 51 and the forming mold are stably positioned. After the position between the forming mold and the upper guide arc plate 51 is fixed, the forming mold divides the upper side of the upper guide member 5 into side areas, middle areas, water inlet areas and drainage areas. At the same time, because the upper guide arc plate 51 is a shape with high corners and a downward concave middle part of the side, there are gaps between the four sides of the bottom of the forming mold and the upper guide arc plate 51. The gaps are used for hot liquid circulation; Among them reference Figure 15 As shown, the water inlet area is one place, which ranges from one side of the mold shell 21 near the main water inlet pipe 22, the side of the forming mold, and the space between the top of the mold shell 21 and the upper side of the upper guide arc plate 51; The middle area is a place, and its range is the space between the upper side of the middle part of the upper guide arc plate 51 and the lower side of the forming mold; The drainage area is one place, which ranges from the side of the mold shell 21 away from the main water inlet pipe 22, the side of the forming mold away from the main water inlet pipe 22, and the space between the top of the mold shell 21 and the upper side of the upper guide arc plate 51; There are two side areas, located between the middle area and the drainage area, and in the space between the forming mold and the inner side wall of the mold shell 21; The drainage area is connected with the central area and the side area respectively; the water inlet area is connected with the central area and the side area respectively; the central area is connected with the side area, the water inlet area and the drainage area respectively; the side area is connected with the central area, the water inlet area and the drainage area respectively.

[0023] At the same time, an upper guide cone 52 is connected to the lower side of the middle position of the upper guide arc plate 51. The upper guide cone 52 is arranged in the middle area. The upper guide cone 52 gradually narrows toward the end away from the upper guide arc plate 51. A lower guide cone 62 is connected to the lower side of the middle position of the lower guide arc plate 61. The lower guide cone 62 gradually narrows toward the end away from the lower guide arc plate 61. That is, the upper guide cone 52 and the lower guide cone 62 are both trumpet-shaped, that is, the cross-sectional diameter gradually narrows downward, and the hot liquid entering the heating space flows into the upward guide cone 52. When the water inlet pipe 22 transports the hot liquid to the heating space, because the hot liquid first enters the water inlet area, and the water inlet area is close to the middle area, the hot liquid entering the water inlet area will first flow to the middle area, and then enter the lower guide cone 62, while the side area and the drainage area will receive less hot liquid replenishment, which will lead to a decrease in the hot liquid temperature in the drainage area. In order to avoid the above situation and ensure the consistency of the temperature of the heating space, the partition 4 on the upper side of the upper guide 5 guides the hot liquid entering the heating space. Figure 7-Figure 8 As shown, the separator 4 includes two side partition plates 42 fixed on the bottom of the forming mold to seal the communication position between the side area and the middle area, and a middle partition plate 41 is fixed between the two side partition plates 42. The side wall of the middle partition plate 41 and the upper guide cone 52 are sealed by a rubber pad. At the same time, a guide pipe 43 is fixed on the lower side of the middle position of the middle partition plate 41. The hot liquid entering the heating space is discharged through the guide pipe 43. At the same time, the side wall of the guide pipe 43 near the bottom is in close contact with the rubber pad and the inner wall of the upper guide cone 52 near the bottom. At this time, a cavity is formed between the lower side of the side partition plate 42, the upper side of the upper guide cone 52 and the outer wall of the guide pipe 43, as shown in FIG. Figure 14 and Figure 15As shown, the cavity can conduct heat to the hot liquid to be discharged, so that the temperature in the cavity increases, so that a heat preservation effect is formed here. When installing the partition 4, the staff can place heat preservation materials in this cavity according to their production needs to improve the heat preservation effect here. At the same time, by forming this cavity in the heating space, the volume of the heating space can be reduced, thereby speeding up the time for the hot liquid in the heating space to be completely replaced, avoiding the occurrence of dead corners in the heating space that affect the heating of the forming mold.

[0024] At the same time, the middle partition plate 41 blocks the connection between the middle area and the side area, so that the hot liquid entering the side area from the water inlet area can only flow into the drainage area, and the hot liquid entering the drainage area from the side area will heat the forming mold in the drainage area, increase the temperature of the forming mold, and ensure that the temperature of the forming mold is consistent. In order to reduce the temperature difference between the drainage area and the water inlet area (because part of the heat in the hot liquid will be absorbed by the forming mold in the process of passing through the side area from the water inlet area and then entering the drainage area, the temperature of the hot liquid will be reduced, thereby causing a temperature difference between the hot liquid temperature in the water inlet area and the drainage area), reference is made to FIG. Figure 9 A liquid baffle 56 is fixed on the upper side of the upper guide arc plate 51 near the main water inlet pipe 22. The liquid baffle 56 is crescent-shaped, and the position connecting the water inlet area and the middle area is blocked by the liquid baffle 56, so that the liquid baffle 56 reduces the channel size between the water inlet area and the middle area, thereby reducing the volume of hot liquid flowing from the water inlet area to the middle area. While the hot liquid transported from the water inlet area to the middle area is reduced, and the volume of hot liquid transported to the heating space by the main water inlet pipe 22 remains unchanged, most of the hot liquid will flow to the drainage area through the side area, thereby increasing the flow rate of the hot liquid in the drainage area and accelerating the flow rate of the hot liquid in the drainage area. After the flow rate of the hot liquid in the drainage area is increased, the heat dissipation of the hot liquid in the process of moving from the water inlet area to the drainage area is reduced, thereby increasing the temperature of the drainage area. In this way, the temperature difference between the water inlet area and the drainage area is reduced.

[0025] The temperature of the drainage area is increased by increasing the content of hot liquid flowing to the drainage area and accelerating the flow rate of the hot liquid. However, when the molding mold is opened and demolded, the cover on the molding mold is opened, and the heat in the molding mold quickly diffuses to the outside. At this time, the temperature of the molding mold decreases. After the temperature of the molding mold decreases, the molding mold absorbs heat from the heating space. When the molding mold absorbs heat from the heating space, the heat of the hot liquid in the heating space will be reduced. At this time, because the molding mold absorbs a lot of heat, the temperature of the hot liquid will decrease. At this time, the temperature difference between the drainage area and the water inlet area will expand, thereby forming a larger temperature difference. In order to avoid the occurrence of such formation, the remaining structure of the lower guide 6 is refined below, with reference to Figures 9-11As shown, the diameter of the lower guide cone tube 62 is larger than the diameter of the upper guide cone tube 52. The upper guide cone tube 52 is arranged inside the lower guide cone tube 62, and a sealing plate is welded at the bottom of the lower guide cone tube 62. A socket 64 is eccentrically opened on the sealing plate. The socket 64 is opened on the side of the sealing plate close to the main water inlet pipe 22. One end of the upper guide cone tube 52 passes through the socket 64 and is fixed with a liquid outlet pipe 53. The outer wall of the upper guide cone tube 52 and the side wall of the socket 64 are in close contact through a sealing gasket. The liquid outlet pipe 53 is connected to an external pipe, which discharges the hot liquid entering the lower guide cone tube 62.

[0026] An auxiliary water inlet pipe 63 is fixedly connected to the bottom of the sealing plate away from the main water inlet pipe 22. The auxiliary water inlet pipe 63 is connected to the pipeline, which transports the hot liquid to the insulation space, wherein the range of the insulation space is specifically: the upper side of the lower guide cone pipe 62 and the lower guide arc plate 61, the lower side of the upper guide cone pipe 52 and the upper guide arc plate 51, and the space enclosed by the side wall of the mold shell 21. When the hot liquid enters the insulation space, the hot liquid will heat the insulation space. After the temperature of the insulation space rises, the heat in the insulation space can heat the lower side of the heating space, so that only the upper side and the side of the heating space diffuse heat outward, thereby reducing the range of heat diffusion outward from the heating space. By reducing the range of heat diffusion outward from the heating space, the temperature of the heating space is reversely increased, thereby reducing the temperature difference in the heating space.

[0027] This solution provides a structure of an insulation space. In order to further improve the insulation effect of the insulation space on the heating space, the shape of the insulation space can be extended so that the insulation space can protect the side of the heating space and also insulate the side of the heating space.

[0028] A plurality of main through grooves 55 are provided on the upper guide arc plate 51 at a position away from the main water inlet pipe 22, and a plurality of auxiliary through grooves 54 are provided on the upper guide arc plate 51 at a position close to the main water inlet pipe 22. The auxiliary through grooves 54 and the main through grooves 55 have the same size, and the number of the auxiliary through grooves 54 is less than the number of the main through grooves 55. The hot liquid entering between the upper guide cone 52 and the lower guide cone 62 from the auxiliary water inlet pipe 63 enters the space on the upper side of the upper guide member 5 from the main through grooves 55 and the auxiliary through grooves 54 respectively. At the same time, because the connection position of the upper guide cone 52 and the lower guide cone 62 is eccentrically arranged, as shown in FIG. Figure 13As shown, at this time, the space between the upper guide cone 52 and the lower guide cone 62 close to the main water inlet pipe 22 is smaller than the space between the upper guide cone 52 and the lower guide cone 62 away from the main water inlet pipe 22. Most of the hot liquid entering the insulation space will enter the drainage area through the main through groove 55, while a small amount of hot liquid will enter the water inlet area through the secondary through groove 54. The hot liquid entering the drainage area from the insulation space does not have too much heat diffusion in the process, and its liquid temperature is higher than the liquid temperature in the drainage area. At this time, the mixing of the two liquids can increase the liquid temperature in the drainage area, thereby reducing the temperature of the drainage area. And the temperature of the water inlet area, reducing the temperature difference of the heating space. At the same time, because the hot liquid in the water inlet area is directly discharged from the main water inlet pipe 22, the liquid temperature is the highest at this time, and the hot liquid entering the water inlet area from the auxiliary groove 54 will have a small amount of heat diffusion during the transmission process. At this time, the temperature of the hot liquid entering the heating area from the auxiliary groove 54 is lower than the hot liquid in the water inlet area. If the two are mixed with each other, the temperature of the water inlet area will be reduced. Therefore, the auxiliary groove 54 is opened at the lower side of the auxiliary groove 54, and the liquid on the lower side of the auxiliary groove 54 will flow directly to the middle area, and then guide the flow in the tapered tube 52 upward through the middle area.

[0029] It should be emphasized here that the hot liquid entering the water inlet area from the secondary groove 54 is directly discharged to the middle area instead of blocking the secondary groove 54 to make all the hot liquid flow to the drainage area. The reason is: by opening the secondary groove 54 and the main groove 55, the hot liquid entering the insulation space can flow from the bottom to the top of the insulation space, so that the hot liquid in the insulation space can be continuously replaced to ensure the temperature in the insulation space. If the secondary groove 54 is blocked, the hot liquid in the insulation space can only be discharged through the main groove 55. The area in the insulation space close to the main water inlet pipe 22 is prone to flow dead corners and the hot liquid cannot be updated, which leads to a decrease in the temperature of the area close to the main water inlet pipe 22 in the empty insulation space, so that the insulation space cannot insulate the heating space.

[0030] In order to ensure the balance of liquid inlet and outlet in the heating space and the insulation space, there are restrictions on the size of the main water inlet pipe 22, the liquid outlet pipe 53 and the auxiliary water inlet pipe 63. When designing the size, the diameter of the auxiliary water inlet pipe 63 is smaller than the diameter of the main water inlet pipe 22, and the diameter of the liquid outlet pipe 53 is larger than the diameter of the main water inlet pipe 22. Because the auxiliary water inlet pipe 63 and the main water inlet pipe 22 are both liquid inlet, and the liquid outlet pipe 53 is liquid outlet, the size of the liquid outlet pipe 53 needs to be set to the maximum to achieve normal flow of liquid.

[0031] When using this device, please refer to Figure 13-15(The direction indicated by the arrow in the figure is the direction of hot liquid flow), part of the hot liquid entering the heating space through the main water inlet pipe 22 enters the middle area through the water inlet area, part of the hot liquid enters the drainage area through the water inlet area and the side area, and then enters the middle area through the drainage area, and is transported to the insulation space through the auxiliary water inlet pipe 63, and part of the hot liquid entering the insulation space heats the side of the upper guide arc plate 51 away from the main water inlet pipe 22, and enters the drainage area through the main through groove 55, and part of the hot liquid moves up the guide arc plate 51 close to the side wall of the main water inlet pipe 22, and enters the water inlet area through the auxiliary through groove 54, and the hot liquid entering the drainage area is mixed with the hot liquid in the drainage area, so as to increase the temperature of the hot liquid in the drainage area, and the hot liquid entering the water inlet area through the auxiliary through groove 54 is directly entered into the middle area by the obstruction of the auxiliary through groove 54; The hot liquid that enters the middle area transports water to the liquid outlet pipe 53 through the guide pipe 43 and the upper guide cone pipe 52, and then the hot liquid is discharged through the pipeline, thereby completing the circulation of the hot liquid.

[0032] Hot liquid is added to the heating space through the main water inlet pipe 22, so that the hot liquid heats the forming mold. At the same time, the hot liquid enters the insulation space to insulate the lower side of the heating space and heats the position of the heating space away from the main water inlet pipe 22. At the same time, the hot liquid in the insulation space enters the drainage area to increase the temperature of the drainage area, thereby reducing the temperature difference inside the heating space, ensuring that the foaming degree of the foam glue in the forming mold is consistent, and ensuring that the produced car seat cushions are soft and hard.

[0033] It should be clarified here that the hot liquid in this scheme can be water or oil. The cost of using water is low, and the heating effect of using oil is good. Both have their advantages and disadvantages, so this scheme does not limit the type of hot liquid.

[0034] In order to avoid excessive heat diffusion in the insulation space, refer to Figure 3-Figure 5 、 Figure 13-14 A bottom supporting plate 7 is provided on the lower side of the lower guide member 6. The bottom supporting plate 7 is screwed to the inside of the mold shell 21, and a receiving hole 71 is opened in the middle of the bottom supporting plate 7. One end of the lower guide cone 62 passes through the receiving hole 71 and extends out. At this time, a cavity is formed between the bottom supporting plate 7, the mold shell 21 and the lower guide cone 62. The cavity insulates the insulation space. At the same time, in order to improve the insulation effect of the cavity, insulation material can be filled in the cavity. At the same time, this solution provides a placement position for the bottom supporting plate 7. The position of the bottom supporting plate 7 can also be moved downward to set the lower side of the entire insulation space in the cavity.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A car seat cushion foaming sponge forming mold capable of performing temperature balance, comprising a support base (1), a plurality of foaming molds (2) being mounted on the upper side of the support base (1), a flip frame (3) being provided on one side of the foaming mold (2), a top cover corresponding to the foaming mold (2) being mounted on the flip frame (3), the top cover being pressed against the upper side of the foaming mold (2) by flipping, and characterized in that: The interior of the foaming mold (2) is provided with a separator (4), an upper guide (5) and a lower guide (6) in sequence from top to bottom; The foaming mold (2) comprises a mold shell (21) and a forming mold arranged at the top of the mold shell (21); the upper guide (5) and the mold shell (21) are combined to form a heating space for heating the forming mold; the upper guide (5) and the lower guide (6) are combined to form a heat preservation space; one side of the mold shell (21) is connected to a main water inlet pipe (22); external hot liquid enters between the upper guide (5) and the mold shell (21) through the main water inlet pipe (22); and at the same time, the partition (4) and the upper guide (5) are connected to the mold shell (21). The guide member (5) cooperates to guide the hot liquid entering the interior of the mold shell (21) to the side away from the water inlet position of the mold shell (21), and at the same time, the hot liquid enters between the lower guide member (6) and the upper guide member (5) to heat the upper guide member (5). At the same time, the space formed between the upper guide member (5) and the lower guide member (6) guides the hot liquid to flow to the side of the mold shell (21) away from the main water inlet pipe (22), and the flowing hot liquid moves to the upper side of the upper guide member (5) and mixes with the hot liquid on the side of the mold shell (21) away from the main water inlet pipe (22).

2. The automobile seat cushion foaming sponge forming mold capable of achieving a balanced temperature difference according to claim 1, characterized in that: The upper guide member (5) includes an upper guide arc plate (51), and the lower guide member (6) includes a lower guide arc plate (61). The edges of the upper guide arc plate (51) and the lower guide arc plate (61) are both shaped such that the four corners are high and the middle of the side edges are concave downwards, and the side walls of the upper guide arc plate (51) and the lower guide arc plate (61) are in close contact with the side walls of the mold shell (21) via rubber pads.

3. The automobile seat cushion foam sponge forming mold capable of achieving a balanced temperature difference according to claim 2, characterized in that: The lower side of the middle position of the upper guide arc plate (51) is connected to an upper guide cone tube (52), and the upper guide cone tube (52) gradually narrows toward the end away from the upper guide arc plate (51). The lower side of the middle position of the lower guide arc plate (61) is connected to a lower guide cone tube (62), and the lower guide cone tube (62) gradually narrows toward the end away from the lower guide arc plate (61). At the same time, the diameter of the lower guide cone tube (62) is larger than the diameter of the upper guide cone tube (52). A sealing plate is welded to the bottom of the lower guide cone tube (62), and a socket (64) is eccentrically opened on the sealing plate. One end of the upper guide cone tube (52) passes through the socket (64) and is fixed with a liquid outlet pipe (53). The outer wall of the upper guide cone tube (52) and the side wall of the socket (64) are in close contact through a sealing gasket.

4. The automobile seat cushion foam sponge forming mold capable of achieving a balanced temperature difference according to claim 3, characterized in that: The socket (64) is provided on a side of the sealing plate close to the main water inlet pipe (22), and a secondary water inlet pipe (63) is fixedly connected to the bottom of the sealing plate at a position away from the main water inlet pipe (22), wherein the diameter of the secondary water inlet pipe (63) is smaller than the diameter of the main water inlet pipe (22), and the diameter of the liquid outlet pipe (53) is larger than the diameter of the main water inlet pipe (22).

5. The automobile seat cushion foaming sponge forming mold capable of equalizing temperature differences according to claim 3, characterized in that: The space between the upper guide cone (52) and the lower guide cone (62) near the main water inlet pipe (22) is smaller than the space between the upper guide cone (52) and the lower guide cone (62) away from the main water inlet pipe (22); a plurality of main through grooves (55) are provided on the upper guide arc plate (51) at a position away from the main water inlet pipe (22); a plurality of secondary through grooves (54) are provided on the upper guide arc plate (51) at a position close to the main water inlet pipe (22); the number of the secondary through grooves (54) is smaller than the number of the main through grooves (55); the hot liquid entering from the secondary water inlet pipe (63) between the upper guide cone (52) and the lower guide cone (62) enters the space on the upper side of the upper guide member (5) from the main through grooves (55) and the secondary through grooves (54).

6. The automobile seat cushion foaming sponge forming mold capable of achieving a balanced temperature difference according to claim 3, characterized in that: The upper guide arc plate (51) is provided with positioning grooves (57) that match the shapes of the four corners of the bottom of the forming mold. When the upper guide member (5) is installed inside the mold shell (21), the four corners of the bottom of the forming mold are arranged in the positioning grooves (57). The forming mold divides the upper side of the upper guide member (5) into a side area, a middle area, a water inlet area and a drainage area. At the same time, there are gaps between the four sides of the bottom of the forming mold and the upper guide arc plate (51), and the gaps are used for hot liquid circulation.

7. The automobile seat cushion foaming sponge forming mold capable of equalizing temperature differences according to claim 4, characterized in that: The separator (4) comprises two side separators (42) fixed on the bottom of the forming mold to seal the connection position between the side area and the middle area, a middle separator (41) is fixed between the two side separators (42), the side wall of the middle separator (41) and the upper guide cone (52) are sealed by a rubber pad, and a guide pipe (43) is fixed on the lower side of the middle position of the middle separator (41), and the hot liquid entering the heating space is discharged through the guide pipe (43).

8. The automobile seat cushion foam sponge forming mold capable of equalizing temperature differences according to claim 7, characterized in that: The side wall of the guide pipe (43) near the bottom is in close contact with the rubber pad and the inner side wall of the upper guide cone (52) near the bottom, and a liquid baffle (56) is fixed on the upper side of the upper guide arc plate (51) near the main water inlet pipe (22). The liquid baffle (56) reduces the channel size between the water inlet area and the middle area. Part of the hot liquid entering the heating space enters the middle area through the water inlet area, and part of the hot liquid enters the drainage area through the water inlet area and the side area, and then enters the middle area through the drainage area. The hot liquid entering the middle area is transported to the liquid outlet pipe (53) through the guide pipe (43) and the upper guide cone (52).

9. The automobile seat cushion foaming sponge forming mold capable of achieving a balanced temperature difference according to claim 8, characterized in that: The auxiliary water inlet pipe (63) transports the hot liquid into the heat-insulating space. Part of the hot liquid that enters the heat-insulating space heats the side of the upper guide arc plate (51) away from the main water inlet pipe (22) and enters the drainage area through the main through groove (55). Part of the hot liquid moves toward the side wall of the upper guide arc plate (51) close to the main water inlet pipe (22) and enters the water inlet area through the auxiliary through groove (54).

10. The automobile seat cushion foaming sponge forming mold capable of equalizing temperature differences according to claim 2, characterized in that: Connecting blocks (23) are fixed at the four corners of the top of the mold shell (21), upper connecting blocks (58) having the same cross-sectional shape as the connecting blocks (23) are fixed at the four corners of the upper guide arc plate (51), and when the upper guide member (5) is installed inside the mold shell (21), the upper connecting blocks (58) and the connecting blocks (23) are in contact and fixedly connected by bolts, and lower connecting blocks (65) having the same cross-sectional shape as the upper connecting blocks (58) are fixed at the four corners of the lower guide arc plate (61), and when the lower guide member (6) is installed inside the mold shell (21), the lower connecting blocks (65) and the upper connecting blocks (58) are in contact and fixedly connected by bolts.

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