Balanced demolding mold for flat plate grid piece forming

Abstract

The utility model relates to a mold capable of realizing balanced demolding for forming a flat plate grid piece, which comprises an upper mold base, an upper mold plate, a lower mold base, a lower mold plate, a hot runner pouring mechanism, a cooling mechanism and an ejection mechanism, and forming blocks which are in one-to-one correspondence with slotted holes of the formed flat plate grid piece and are arranged at intervals are formed on the upper mold plate and the lower mold plate; an upper cavity and a lower cavity are formed between the adjacent forming blocks of the upper die plate and the lower die plate respectively, a plurality of ejector pin holes are formed in the lower die plate, and the ejector pin holes are distributed in the positions, corresponding to frameworks on the peripheries of trapezoid groove holes of a front body of a formed flat plate grid piece, of the lower cavity and the positions, corresponding to frameworks at the junctions of adjacent square groove holes of a rear body, of the lower die cavity. And the grooves are distributed at the corresponding positions of the framework at the peripheries of the square groove holes on the outer layer of the rear body. According to the technical scheme, by changing the distribution of the ejector pin holes, the influence of cavity holding force and friction force is effectively overcome during demolding of the flat plate grid piece, uniform stress is formed, then the demolding difficulty is low, and the damage risk of a product can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically, it relates to a mold for forming flat grid parts that can balance demolding. Background Art

[0002] Figure 1 As shown, there is a flat grid part 7 with a densely meshed surface. The product is overall flat and consists of two parts, a front body 701 and a rear body 702. The front body 701 has a trapezoidal slot hole 701a with a trapezoidal shape, and there is a triangular slot hole 701b with a triangular shape in this slot hole. The rear body 702 has several square slot holes 702a arranged at intervals along the longitude and latitude directions. The trapezoidal slot hole 701a, the trapezoidal slot hole 701a, and the square slot holes 702a are all surrounded by a framework.

[0003] The great difficulty in demolding is a major problem in the molding process of flat products with a densely meshed surface. When the molten blank enters the cavity and is cooled and solidified into a shape, based on the principle of thermal expansion and contraction, the volume of the product shrinks. Due to the existence of residual stress in the cavity, a certain squeezing force is generated on the surface of the product, that is, the cavity holding force. The grid structure increases the surface area of the product and the contact area with the mold cavity, resulting in an increase in the cavity holding force and friction force during the cooling process. As a result, the product is more closely in contact with the mold surface, causing an increase in the demolding difficulty and also increasing the risk of damage to the product.

[0004] A Chinese patent with the publication number CN219583434U and the patent name "Grid Tray Mold for Tian Characters" discloses a mold for demolding flat products with a densely meshed surface. It mainly includes an upper mold and a lower mold. A molding groove is opened on the lower mold, and a bottom plate is provided below the lower mold. Side plates are provided between the bottom plate and the lower mold. Several thimble holes extending vertically up and down are opened at the bottom of the molding groove. A thimble is slidably connected in the thimble hole. A thimble plate that moves up and down is provided between the lower mold and the bottom plate. The lower end of the thimble is connected to the thimble plate. An elastic body with one end abutted against the lower mold and the other end abutted against the thimble plate is sleeved on the thimble. A push block is provided below the thimble plate, and a linear reciprocating motion mechanism for controlling its vertical up and down movement is provided on the push block. A leveling screw with one end abutted against the thimble plate and a rotating part at the other end is threadedly connected to the bottom plate.

[0005] When the above-mentioned mold is demolding a flat product with a dense grid on the surface, it first moves the push block upward through the linear reciprocating motion mechanism, and is then transmitted through the ejector plate to push all the ejectors to complete the demolding of the product. If there is a height deviation of the ejector after resetting, the height of the ejector plate and the ejectors thereon can be fine-tuned by rotating the leveling screw forward and backward. Obviously, the mold is mainly designed to address the problem that the ejector mechanism is prone to displacement and position deviation due to repeated use, resulting in uneven demolding of the grid part of the product. However, it does not improve the ejector distribution, so that the ejector distribution is no different from that of conventional molds, resulting in uneven force when such products are demolded, causing some areas of the product to detach from the cavity first, while other areas are still suppressed by the cavity, resulting in stretched damage to the product. Therefore, there is still a risk of difficulty in demolding and easy damage to the product. Utility Model Content

[0006] In view of the above situation, in order to overcome the problem that the flat-plate products with densely covered grids on their surfaces are subjected to large clamping force and friction force during demolding due to the large contact area with the mold cavity, and the force cannot be evenly applied due to the uneven distribution of ejector pins, resulting in greater demolding difficulty and easy damage to the product, the purpose of the utility model is to provide a mold that can effectively overcome the influence of the clamping force and friction force of the cavity when demolding the flat-plate grid parts by changing the distribution of ejector pin holes, thereby forming uniform force, thereby having lower demolding difficulty and significantly reducing the risk of product damage.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] A balanced demoulding mold for forming a flat grid piece comprises an upper mold base, an upper mold plate, a lower mold base, a lower mold plate, a hot runner pouring mechanism, a cooling mechanism and an ejection mechanism. The upper mold plate and the lower mold plate are both formed with molding blocks corresponding to and spaced from trapezoidal slots, triangular slots and square slots of the formed flat grid piece. An upper cavity and a lower cavity are respectively formed between adjacent molding blocks of the upper mold plate and the lower mold plate. The lower mold plate is provided with a plurality of ejector pin holes. The ejector pin holes are distributed at positions corresponding to the outer peripheral skeleton of the trapezoidal slots of the front body of the formed flat grid piece in the lower mold cavity, and at positions corresponding to the skeleton at the intersection of adjacent square slots of the rear body, and are also distributed at positions corresponding to the skeleton of the outer periphery of the square slots of the outer layer of the rear body.

[0009] Preferably, there is a corresponding pinhole on the upper bottom, lower bottom and two sides of the peripheral skeleton of the trapezoidal slot of the front body of the formed flat grid component, and the pinholes corresponding to the two sides are symmetrically distributed relative to the center line of the trapezoidal slot, and the pinholes corresponding to the upper bottom and lower bottom are opposite to the midpoints of the top angle and bottom edge of the triangular slot.

[0010] Preferably, the ejector pin holes corresponding to the skeleton at the intersection of adjacent square slots of the rear body of the formed flat grid member are symmetrically distributed on both sides of the center line of the rear body.

[0011] Preferably, the number of the square slots between the adjacent ejector holes corresponding to the skeleton at the intersection of the adjacent square slots of the rear body of the formed flat grid member is at least one.

[0012] Preferably, the ejector pin holes corresponding to the skeletons around the outer square slots of the rear body of the formed flat grid element are located on the center line of the rear body.

[0013] Preferably, the upper mold plate and the lower mold plate are provided with an upper cooling channel and a lower cooling channel which horizontally penetrate the respective side walls, and the cooling mechanism is arranged in the upper cooling channel and the lower cooling channel.

[0014] Preferably, an internal pressure relief channel and a plurality of external pressure relief channels are provided on the upper template. The internal pressure relief channel is arranged around the upper cavity, and the external pressure relief channels are arranged around the periphery of the internal pressure relief channel and communicate with the outer wall of the upper template.

[0015] Preferably, there are two upper cavities and two corresponding lower cavities.

[0016] Preferably, the hot runner pouring mechanism includes a pouring hopper, a feed channel, a hot nozzle, a diverter plate and a temperature control box. The pouring hopper is arranged on the upper mold base, the diverter plate is arranged between the upper mold base and the upper mold plate, the feed channel is opened on the diverter plate and connected with the upper cavity, the pouring hopper and the hot nozzle are respectively arranged at both ends of the feed channel, the hot nozzle is opposite to the upper cavity, and the temperature control box is arranged on the feed channel on one side of the diverter plate.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The ejector holes in the mold of the utility model are distributed in the following positions, wherein some of the ejector holes are distributed in the lower cavity at positions corresponding to the peripheral skeleton of the trapezoidal slot holes of the front body of the formed flat grid component, and the front body of the formed flat grid component is uniformly stressed during demoulding through these ejector holes. The ejector holes are also distributed in positions corresponding to the skeleton at the intersection of adjacent square slot holes of the rear body, that is, on the skeleton corresponding to the corner of the square slot hole. From the overall point of view, the skeleton surrounding the square slot hole is composed of strips arranged along the warp and weft directions, and then staggered into a number of crosses. When the number of square slot holes on the upper and lower sides of the cross structure is equal, Its center of gravity is located at the intersection, and the force point of the ejector pin is located at the center of gravity, so that when demolding, the skeleton of the square slot hole surrounded by the rear body is stably separated from the lower cavity, and the ejector pin holes are also distributed at the corresponding positions of the skeleton outside the outer square slot hole of the rear body. Cooperating with this part of the ejector pin holes, it is ensured that the entire flat grid component is uniformly stressed during demolding. In the process of the ejector pin pushing the flat grid component to demold, the front body and the rear body can be synchronously separated from the lower cavity, thereby effectively overcoming the clamping force of the cavity and the friction between it and the flat grid component, avoiding the flat grid component from being stretched and damaged, and greatly reducing the difficulty of demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a flat grid component with a surface densely covered with grids;

[0020] Figure 2 It is a schematic diagram of the overall structure of the mold of the utility model;

[0021] Figure 3 It is a schematic diagram of the side view structure of the mold of the utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure of the upper template of the mold of the utility model;

[0023] Figure 5 It is a schematic diagram of the overall structure of the lower template of the mold of the utility model;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the mold of the utility model;

[0025] Figure 7 This utility model Figure 6 A schematic diagram of the enlarged structure of part A;

[0026] Figure 8 It is a schematic diagram of the structure of the lower template of the utility model in a top view;

[0027] Fig. 9 This utility model Figure 8 Schematic diagram of the enlarged structure of part B.

[0028] As shown in the figure:

[0029] 1. Upper mold base; 2. Upper mold plate; 201. Upper cavity; 202. Upper cooling channel; 203. Internal pressure relief channel; 204. External pressure relief channel; 3. Lower mold base; 4. Lower mold plate; 401. Lower cavity; 402. Ejector hole; 403. Lower cooling channel; 5. Hot runner pouring mechanism; 501. Pouring hopper; 502. Hot nozzle; 503. Diverter plate; 504. Temperature control box; 6. Ejector mechanism; 601. Ejector; 602. Ejector plate; a1. Molding block; 7. Flat grid piece; 701. Front body; 701a. Trapezoidal slot; 701b. Triangular slot; 702. Rear body; 702a. Square slot; 703. Skeleton. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of simplifying the description, and do not indicate or imply that the directions are specific directions that must be possessed and specific directions, structures, and operations, and therefore should not be understood as limitations on the present utility model.

[0032] like Figures 2 to 9As shown, the utility model relates to a balanced demoulding mold for flat grid component molding, which includes an upper mold base 1, an upper mold plate 2, a lower mold base 3, a lower mold plate 4, a hot runner pouring mechanism 5, a cooling mechanism and an ejection mechanism 6. The upper mold plate 2 is arranged on the upper mold base 1, and the lower mold plate 4 is arranged on the lower mold base 3. The upper mold plate 2 and the upper mold base 1 together constitute an upper mold, and the lower mold plate 4 and the lower mold base 3 respectively constitute a lower mold. The hot runner pouring mechanism 5 is used for injecting molten blanks. The cooling mechanism mainly includes a cooling water pipe, which is used to connect cooling water to cool the entire mold and the molded product during the molding process of the flat grid component 7. The ejection mechanism 6 is composed of a plurality of ejector pins 601 and an ejector plate 602. The ejector pins 601 are driven to move by the ejector plate 602 when the mold is opened. The formed flat grid member 7 is demoulded. The above is a conventional technology in the existing mold, so it will not be further described. In particular, the upper template 2 and the lower template 4 are formed with forming blocks a1 that correspond to and are spaced from the trapezoidal slots 701a, triangular slots 701b and square slots 702a of the formed flat grid member 7. Since the formed flat grid member 7 has trapezoidal slots 701a, triangular slots 701b and square slots 702a, it can be understood that the forming blocks a1 have different shapes corresponding to the trapezoidal slots 701a, triangular slots 701b and square slots 702a, and an upper cavity 201 and a lower cavity 401 for forming the skeleton 703 of the flat grid member 7 are formed between the forming blocks a1. The upper cavity 201 and The lower mold cavity 401 forms a complete mold cavity together after the upper mold and the lower mold are molded together. A plurality of ejector holes 402 are opened on the lower mold plate 4. The ejector pins 601 of the ejection mechanism 6 are equal in number to the ejector pin holes 402 and correspond one to one. When demolding, the ejector pins 601 move from the corresponding ejector pin holes 402 toward the formed flat grid member 7 to exert force on it. Each ejector pin hole 402 is distributed in the following positions, wherein some ejector pin holes 402 are distributed in the lower mold cavity 401 at positions corresponding to the trapezoidal slot holes 701a of the outer peripheral skeleton 703 of the front body 701 of the formed flat grid member 7. Through these ejector pin holes 402, the front body 701 of the formed flat grid member 7 is uniformly stressed when demolding. The ejector pin holes 402 are also distributed in the adjacent square slot holes 702 of the rear body 702 a corresponding position of the skeleton 703 at the intersection, that is, on the skeleton 703 corresponding to the corner of the square slot 702a, from the overall point of view, the skeleton 703 surrounding the square slot 702a is composed of banners arranged along the warp and weft directions, and then staggered into a number of crosses. When the square slots 702a on the upper and lower sides of the cross structure are equal in number, their center of gravity is located at the intersection, and the force point of the ejector 601 is located at the center of gravity, so that when demoulding, the skeleton 703 of the rear body 702 surrounding the square slots 702a is stably separated from the lower cavity 401, and the ejector holes 402 are also distributed on the corresponding positions of the skeleton 703 outside the outer square slots of the rear body 702, and this part of the ejector holes 402 is used to ensure that the entire flat grid member 7 is evenly stressed during demoulding.When the ejector pin 601 pushes the flat grid member 7 to demold, the front body 701 and the rear body 702 can be synchronously separated from the lower cavity 401, thereby effectively overcoming the cavity clamping force and the friction between the flat grid member 7 and the flat grid member 7, avoiding the flat grid member 7 from being stretched and damaged, and greatly reducing the demolding difficulty.

[0033] like Figure 5 , Figure 8 and Fig. 9 As shown, there is a corresponding ejector hole 402 on the upper bottom, lower bottom and two sides of the outer peripheral skeleton 703 of the trapezoidal slot 701a of the front body 701 of the formed flat grid component 7, and the ejector holes 402 corresponding to the two sides are symmetrically distributed relative to the center line of the trapezoidal slot 701a, and the ejector holes 402 corresponding to the upper bottom and the lower bottom are opposite to the vertex angle and the midpoint of the bottom side of the triangular slot 701b. Based on the above arrangement, the ejector holes 402 corresponding to the upper cavity 201 and the front body 701 of the flat grid component 7 are evenly distributed, so that when the flat grid component 7 is demoulded, the front body 701 is subjected to a more even force to overcome the clamping force of the cavity and the friction between the skeleton 703.

[0034] like Figure 5 , Figure 8 and Fig. 9 As shown, the ejector pin holes 402 corresponding to the skeleton 703 at the intersection of adjacent square slots 702a of the rear body 702 of the formed flat grid component 7 are symmetrically distributed on both sides of the center line of the rear body 702, thereby ensuring that the skeleton 703 between the square slots 702a of the rear body 702 of the flat grid component 7 is uniformly stressed during demoulding, so that this part of the skeleton 703 can effectively overcome the clamping force of the cavity and the friction between the skeleton 703 and the flat grid component 7 when demoulding.

[0035] like Figure 5 , Figure 8 and Fig. 9As shown, the number of the square slots 702a between the adjacent ejector holes 402 corresponding to the skeleton 703 at the intersection of the adjacent square slots 702a of the rear body 702 of the formed flat grid member 7 is at least one. The utility model takes the flat grid member 7 with nine columns and sixteen rows of square slots 702a as an example. The corresponding forming blocks a1 in the upper cavity 201 and the lower cavity 401 have the same number of columns and rows. The square slots 702a located on both sides of the center line of the rear body 702 have four columns. The ejector holes 402 corresponding to the skeleton 703 between the square slots 702a on both sides are located in the first column of the square slots. The holes 702a and the second row of square slot holes 702a, and the third row of square slot holes 702a and the fourth row of square slot holes 702a, and at the same time, they are located between the first two rows of square slot holes 702a, and the ejector holes 402 corresponding to the skeleton 703 between the first two rows of square slot holes 702a are separated by a distance of three square slot holes 702a, and then during demoulding, under the premise of ensuring that the front body 701 and the rear body 702 of the flat grid member 7 are evenly stressed, the number of ejector holes 402 is simplified, and the number of ejector pins 601 of the ejection mechanism 6 is correspondingly reduced, so as to reduce the manufacturing cost and difficulty of the mold.

[0036] like Figure 5 , Figure 8 and Fig. 9 As shown, the ejector pin holes 402 corresponding to the skeleton 703 outside the outer square slots of the rear body 702 of the formed flat grid component 7 are located on the center line of the rear body 702. When demolding, the ejector pin holes 402 corresponding to the square slots 702a of the rear body 702 of the flat grid component 7 are matched so that the entire rear body 702 can be evenly stressed, effectively overcoming the clamping force of the cavity and the friction with the skeleton 703 of the rear body 702.

[0037] like Figures 2 to 5 As shown, the upper mold plate 2 and the lower mold plate 4 are provided with an upper cooling channel 202 and a lower cooling channel 403 which horizontally penetrate the respective side walls, and the cooling mechanism is arranged in the upper cooling channel 202 and the lower cooling channel 403. The upper mold and the lower mold of the mold of the utility model respectively only include an upper mold base 1, an upper mold plate 2 and a lower mold base 3, and a lower mold base 4, without the arrangement of an upper mold core and a lower mold core, so that the upper cooling channel 202 and the lower cooling channel 403 do not need to first penetrate the upper mold base 1, the upper mold core and the lower mold base 3, and the lower mold core in the vertical direction. Then it passes horizontally from the approaching side of the upper cavity 201 and the lower cavity 401, so that the cooling water pipe of the cooling mechanism can be directly arranged horizontally at the approaching position of the upper cavity 201 and the lower cavity 401, and at the same time, the docking design between the upper mold plate 2, the upper mold core and the lower mold plate 4 and the lower mold core for docking the cooling water pipe is simplified, thereby greatly reducing the difficulty of setting up the cooling mechanism. At the same time, after the cooling water passes into the cooling water pipe, the upper cavity 201, the lower cavity 401 and the molded product can be directly cooled, thereby improving the cooling efficiency.

[0038] like Figure 4 As shown, an internal pressure relief channel 203 and a plurality of external pressure relief channels 204 are provided on the upper mold plate 2. The internal pressure relief channel 203 is arranged around the upper mold cavity 201, and the external pressure relief channels 204 are arranged around the periphery of the internal pressure relief channel 203 and are connected with the outer wall of the upper mold plate 2. The gas in the mold cavity during the molding process of the flat mesh component 7 is discharged through the external pressure relief channel 204 and the internal pressure relief channel 203 to prevent the generation of bubbles, and to discharge the smoke and hot air generated during the molding process, thereby reducing the mold cavity temperature and ensuring the molding quality. At the same time, the pressure and impact in the mold cavity are reduced, and the risk of damage to the flat mesh component 7 during molding is reduced.

[0039] like Figure 4 and Figure 5 As shown, there are two upper cavities 201 and two corresponding lower cavities 401. Based on the above arrangement, the mold of the utility model can simultaneously form two groups of flat grid members 7 in a unit time, thereby improving production efficiency and saving production costs.

[0040] like Figure 2 , Figure 3 and Figure 6 As shown, the hot runner pouring mechanism 5 includes a pouring hopper 501, a feed channel, a hot nozzle 502, a diverter plate 503 and a temperature control box 504. The pouring hopper 501 is arranged on the upper mold base 1, the diverter plate 503 is arranged between the upper mold base 1 and the upper mold plate 2, the feed channel is opened on the diverter plate 503, and is connected with the upper cavity 201, the pouring hopper 501 and the hot nozzle 502 are respectively arranged at both ends of the feed channel, the hot nozzle 502 is opposite to the upper cavity 201, and the temperature control box 504 is arranged on the feed channel on one side of the diverter plate 503.

[0041] Combination Figures 1 to 9 When the mold of the utility model is forming the flat grid member 7, the molten blank enters the upper cavity 201 through the pouring channel of the hot runner pouring mechanism 5 on the upper mold plate 2 until the upper cavity 201 and the lower cavity 401 are completely filled. When the flat grid member 7 is formed into a row and demoulded, the ejector plate 602 of the ejector mechanism 6 drives each ejector pin 601 to move, and each ejector pin 601 is in the lower cavity 401 and the ejector hole 4 corresponding to the trapezoidal slot hole 701a of the front body 701 of the formed flat grid member 7. 02. The ejector pin holes 402 at the corresponding positions of the skeleton 703 at the intersection of the adjacent square slots 702a of the rear body 702 and the ejector pin holes 402 at the corresponding positions of the bones at the periphery of the outer square slots of the rear body 702 are used to push the flat grid member 7, so that the skeleton 703 is evenly stressed, and the front body 701 and the rear body 702 are synchronously separated from the lower cavity 401, effectively overcoming the clamping force of the cavity and the friction between the cavity and the flat grid member 7, avoiding the flat grid member 7 from being stretched and damaged, and greatly reducing the difficulty of demolding.

[0042] The above embodiments and descriptions are only for explaining the principle and the best embodiment of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A mold with balanced demoulding for forming a flat grid component, comprising an upper mold base (1), an upper mold plate (2), a lower mold base (3), a lower mold plate (4), a hot runner pouring mechanism (5), a cooling mechanism and an ejection mechanism (6), characterized in that: The upper template (2) and the lower template (4) are both formed with forming blocks (a1) corresponding to and spaced from the trapezoidal slots (701a), triangular slots (701b) and square slots (702a) of the formed flat grid member (7). An upper cavity (201) and a lower cavity (401) are formed between adjacent forming blocks (a1) of the upper template (2) and the lower template (4). The lower template (4) is provided with a plurality of ejector pin holes (402). The ejector pin holes (402) are distributed at positions corresponding to the outer peripheral skeleton (703) of the trapezoidal slots (701a) of the front body (701) of the formed flat grid member (7), positions corresponding to the skeleton (703) at the intersection of the adjacent square slots (702a) of the rear body (702), and positions corresponding to the skeleton (703) at the outer periphery of the outer layer of the square slots of the rear body (702).

2. A balanced demoulding mold for flat grid parts molding according to claim 1, characterized in that: The upper bottom, lower bottom and two sides of the outer peripheral frame (703) of the trapezoidal slot (701a) of the front body (701) of the formed flat grid member (7) each have a corresponding ejector hole (402), the ejector holes (402) corresponding to the two sides are symmetrically distributed relative to the center line of the trapezoidal slot (701a), and the ejector holes (402) corresponding to the upper bottom and the lower bottom are opposite to the midpoints of the top angle and the bottom side of the triangular slot (701b).

3. A balanced demoulding mold for flat grid component molding according to claim 1, characterized in that: The ejector pin holes (402) corresponding to the frame (703) at the intersection of adjacent square slot holes (702a) of the rear body (702) of the formed flat grid member (7) are symmetrically distributed on both sides of the center line of the rear body (702).

4. A balanced demoulding mold for flat grid component molding according to claim 3, characterized in that: The number of the square slots (702a) between the adjacent ejector holes (402) corresponding to the frame (703) at the intersection of the adjacent square slots (702a) of the rear body (702) of the formed flat grid member (7) is at least one.

5. A balanced demoulding mold for flat grid component molding according to claim 1, characterized in that: The ejector pin holes (402) corresponding to the skeleton (703) outside the outer layer of the square grid slots of the rear body (702) of the formed flat grid member (7) are located on the center line of the rear body (702).

6. A balanced demoulding mold for flat grid component molding according to claim 1, characterized in that: The upper mold plate (2) and the lower mold plate (4) are provided with an upper cooling channel (202) and a lower cooling channel (403) which horizontally penetrate the respective side walls, and the cooling mechanism is arranged in the upper cooling channel (202) and the lower cooling channel (403).

7. A balanced demoulding mold for forming a flat grid member according to claim 1, characterized in that: The upper mold plate (2) is provided with an internal pressure relief channel (203) and a plurality of external pressure relief channels (204); the internal pressure relief channel (203) is arranged around the upper mold cavity (201); and the external pressure relief channels (204) are arranged around the periphery of the internal pressure relief channel (203) and are communicated with the outer wall of the upper mold plate (2).

8. The balanced demoulding mold for flat grid parts molding according to claim 1, characterized in that: The number of the upper mold cavity (201) and the corresponding lower mold cavity (401) is two.

9. A balanced demoulding mold for flat grid component molding according to claim 1, characterized in that: The hot runner pouring mechanism (5) comprises a pouring hopper (501), a feed channel, a hot nozzle (502), a diverter plate (503) and a temperature control box (504); the pouring hopper (501) is arranged on the upper mold base (1); the diverter plate (503) is arranged between the upper mold base (1) and the upper mold plate (2); the feed channel is opened on the diverter plate (503) and is connected to the upper mold cavity (201); the pouring hopper (501) and the hot nozzle (502) are respectively arranged at two ends of the feed channel; the hot nozzle (502) is opposite to the upper mold cavity (201); and the temperature control box (504) is arranged on the side of the feed channel where the diverter plate (503) is located.

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