High-precision injection mold for automobile seat guard plate

Abstract

The invention relates to the technical field of injection molds, and provides an automobile seat guard plate high-precision injection mold which comprises a fixed sealing plate and a movable sealing plate, a mold set is installed between the fixed sealing plate and the movable sealing plate, the mold set comprises a fixed mold and a movable mold, the fixed mold is installed on the fixed sealing plate, and the movable mold is installed on the movable sealing plate. The injection mold comprises a fixed mold and a movable mold, and further comprises pressure equalizing mold core assemblies, an injection molding pipe and a positioning assembly, the pressure equalizing mold core assemblies are installed on the fixed mold and the movable mold, the injection molding pipe is installed on the fixed mold, and the positioning assembly is installed on the mold set. Therefore, the problem that the size precision of a finished product is reduced due to non-uniform material filling in a local area caused by reduction of the precision during die butt joint is solved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a high-precision injection mold for a car seat guard plate. Background Art

[0002] The injection mold for car seat guard is a tool used to manufacture car seat guards. During operation, the plastic is injected into the mold cavity by the injection molding machine under high pressure, and the molded product is obtained after cooling and solidification. The specific process is that the upper mold cooperates with the lower mold, and after the raw material is injected into the mold cavity, the upper mold is driven to move and the finished product is taken out, and the injection molding is completed, that is, the plastic raw material is processed into a seat guard of a specific shape through the injection molding process.

[0003] After long-term use, the mold will wear out and the gap between the guide parts will increase, which will lead to reduced mold accuracy. Insufficient mold accuracy will lead to uneven gaps. That is, when the two molds are docked, there will be gaps in some places due to uneven pressure distribution between the molds. This will cause uneven material filling in local areas, and some materials will leak out of the gaps. After cooling, they are prone to shrinkage, resulting in more burrs on the injection molded workpiece and excessive dimensional deviation of the finished product, thus affecting the processing accuracy. Summary of the invention

[0004] The present invention proposes a high-precision injection mold for an automobile seat guard plate, which solves the problem in the prior art that the gap between mold guide components increases due to long-term use, which reduces the accuracy of mold docking, causes uneven material filling in local areas, and reduces the dimensional accuracy of the finished product.

[0005] The technical solution of the present invention is as follows: A high-precision injection mold for a car seat guard plate, comprising a fixed sealing plate and a movable sealing plate, a mold group is installed between the fixed sealing plate and the movable sealing plate, the mold group comprises a fixed mold and a movable mold, the fixed mold is installed on the fixed sealing plate, the movable mold is installed on the movable sealing plate, and further comprises: An isostatic mold core assembly is installed on both the fixed mold and the movable mold, and is used to press the fixed mold and the movable mold tightly before injection molding; An injection molding tube, which is installed on the fixed mold and is used to transport materials during molding; A positioning component is installed on the mold set and is used to guide the movable mold when the fixed mold is docked with the movable mold.

[0006] On the basis of the above scheme, the isostatic mold core assembly comprises: A fixed mold core, the fixed mold core is detachably mounted in a fixed mold groove on the fixed mold; Wherein, the tail end of the injection tube is connected to the fixed mold core; A movable mold core, wherein the movable mold core is detachably arranged in a movable mold groove on the movable mold, a gap exists between the movable mold core and the movable mold groove, and the fixed mold core is adapted to the movable mold core, and a closed molding cavity is formed when the mold is closed; A pressure-equalizing mounting portion, which is mounted between the movable mold core and the movable mold groove and is used to press the fixed mold core and the movable mold core when the mold is closed; A position locking portion is installed on the movable mold and is used to fix the position of the pressure equalizing mounting portion.

[0007] On the basis of the above solution, the pressure equalizing installation part includes: Insertion cylinders, two groups of the insertion cylinders are symmetrically and fixedly installed on one side of the movable mold core close to the movable mold groove, and each group of the insertion cylinders is provided with a plurality of them; A fixed sleeve, each of the plug-in cylinders is coaxially sleeved with the fixed sleeve, and the fixed sleeve is fixedly connected to the movable mold groove; A rubber ring is coaxially fixedly mounted on each of the fixing sleeves, and the rubber ring is fixedly connected to the plug-in tube.

[0008] In addition to the above solutions, it also includes: A tightening hole, wherein each of the plug-in tubes is coaxially provided with the tightening hole; A tensioning member is provided in each of the tensioning holes, and the tensioning member is slidably matched with the fixing sleeve to tighten the plug-in sleeve.

[0009] On the basis of the above solution, the tensioning member comprises: A tension rod, on each of the fixing sleeves, the tension rod is coaxially slidably mounted; A spherical tensioning block, each of the tensioning holes is provided with the spherical tensioning block, and the spherical tensioning block is fixedly connected to the tensioning rod; Wherein, each of the tightening holes is provided with a contact surface adapted to the spherical tightening block at one end close to the fixing sleeve.

[0010] On the basis of the above-mentioned solution, there is a gap between the inner side wall of each fixing sleeve and the plug-in tube, and there is a gap between the side wall of each spherical tightening block and the tightening hole.

[0011] On the basis of the above solution, the position locking part comprises: A locking groove, wherein a plurality of the locking grooves are provided at the bottom of the movable mold groove, the plurality of locking grooves correspond to a plurality of the fixing sleeves one by one, and the locking grooves are provided with a positioning area and a sliding area; A locking frame, wherein the end of each tension rod is fixedly mounted with the locking frame, the locking frame is slidably mounted in the sliding area, and a side of each locking frame close to the positioning area is set as an inclined surface; A spring, wherein the spring is fixedly installed between each locking frame and the fixing sleeve; A positioning component is installed in each positioning area and is used to fix the position of the locking frame.

[0012] On the basis of the above solution, the positioning member comprises: An electric cylinder is installed inside each of the positioning areas; A positioning frame is fixedly mounted on the output end of each electric cylinder, the positioning frame is slidably mounted in the sliding area, and the positioning frame is adapted to the inclined surface of the locking frame.

[0013] Based on the above solution, the positioning component includes: Positioning blocks, four of which are symmetrically and fixedly mounted on the fixed mold core; Positioning grooves: four positioning grooves are symmetrically opened on the movable mold core, and the four positioning grooves correspond to and fit with the four positioning blocks one by one.

[0014] On the basis of the above scheme, it also includes guide columns, four of which are symmetrically and fixedly installed on the fixed mold, and guide holes are opened at positions corresponding to the guide columns on the movable mold, and the guide holes are adapted to the guide columns.

[0015] The working principle and beneficial effects of the present invention are: 1. In the present invention, when the fixed mold core and the movable mold core are butt-jointed, they are subjected to pressure. At this time, the rubber ring will be subjected to the pressure between the plug-in sleeve and the fixed sleeve, and the rubber ring will be compressed. At this time, the plug-in sleeve will produce a small displacement in the fixed sleeve, so that the pressure between the fixed mold core and the movable mold core becomes more uniform, so as to avoid the problem of uneven pressure between the fixed mold core and the movable mold core, which leads to dimensional deviation in the finished product; 2. In the present invention, the spherical tensioning block presses against the contact surface between the tensioning hole and the spherical tensioning block until the spherical tensioning block is close to the contact surface, so as to fix the tensioning rod, so that the spherical tensioning block presses against the contact surface. When the axis of the tensioning hole does not coincide with the axis of the tensioning rod or crosses The spherical tensioning block can automatically adapt and adjust to ensure the close fit of the contact surface, avoiding the change of the gap between the plug-in sleeve and the fixed sleeve due to the displacement of the tensioning rod, thereby ensuring the accuracy of the docking position of the movable mold core and the fixed mold core; 3. In the present invention, through the setting of the positioning component, the fixed mold and the movable mold can be quickly docked, which improves the efficiency of the operation. At the same time, through the setting of the equalizing core component, when the fixed mold core and the movable mold core are docked, the pressure between the fixed mold core and the movable mold core can be automatically adjusted, and after adjusting once, under the premise of not disassembling the fixed mold core and the movable mold core, there is no need for multiple adjustments, which effectively improves the accuracy and adaptability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional structure in cross section in the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the cooperation between the fixed mold and the fixed mold core in the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the pressure equalizing mold core assembly in the present invention; Figure 5 It is a cross-sectional structural schematic diagram of the cooperation between the movable mold core and the pressure equalizing mounting part in the present invention; Figure 6 It is a cross-sectional structural schematic diagram of the cooperation between the movable die and the pressure equalizing mounting part in the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the pressure equalizing mold core assembly in the present invention; Figure 8 It is a schematic cross-sectional structure diagram of the cooperation between the positioning member and the locking groove in the present invention.

[0018] In the figure: 1. Fixed sealing plate; 2. Movable sealing plate; 3. Fixed mold; 4. Moving mold; 5. Injection tube; 6. Fixed mold core; 7. Fixed mold groove; 8. Moving mold core; 9. Moving mold groove; 10. Plug-in sleeve; 11. Fixed sleeve; 12. Rubber ring; 13. Tightening hole; 14. Tightening rod; 15. Spherical tightening block; 16. Locking groove; 17. Locking frame; 18. Spring; 19. Electric cylinder; 20. Positioning frame; 21. Positioning block; 22. Positioning groove; 23. Guide column; 24. Guide hole. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 8 As shown, this embodiment proposes a high-precision injection mold for a car seat guard plate, including a fixed sealing plate 1 and a movable sealing plate 2, a mold group is installed between the fixed sealing plate 1 and the movable sealing plate 2, the mold group includes a fixed mold 3 and a movable mold 4, the fixed mold 3 is installed on the fixed sealing plate 1, and the movable mold 4 is installed on the movable sealing plate 2, and also includes an equalizing mold core assembly, an injection tube 5 and a positioning assembly, and the fixed mold 3 and the movable mold 4 are both installed with an equalizing mold core assembly for pressing the fixed mold 3 and the movable mold 4 before injection molding, and the equalizing mold core assembly includes a fixed mold core 6, a movable mold core 8. Pressure-equalizing installation part and position locking part. The fixed mold core 6 is detachably installed in the fixed mold groove 7 on the fixed mold 3. The tail end of the injection tube 5 is connected with the fixed mold core 6. The movable mold core 8 is detachably arranged in the movable mold groove 9 on the movable mold 4. There is a gap between the movable mold core 8 and the movable mold groove 9. The fixed mold core 6 is adapted to the movable mold core 8, and a closed molding cavity is formed when the mold is closed. The pressure-equalizing installation part is installed between the movable mold core 8 and the movable mold groove 9, and is used to press the fixed mold core 6 and the movable mold core 8 when the mold is closed. The position locking part is installed on the movable mold 4, and is used to fix the position of the pressure-equalizing installation part.

[0021] Specifically, during use, the fixed sealing plate 1 and the movable sealing plate 2 are first installed on the fixed side and the movable side of the injection molding machine respectively, and then the fixed mold core 6 and the movable mold core 8 on the fixed mold 3 and the movable mold 4 are installed respectively, and the position between the fixed mold core 6 and the movable mold core 8 is adjusted to avoid deviation during mold closing. Then the discharge port of the injection molding machine is connected with the injection molding pipe 5, and the injection molding operation can be started. At this time, the movable sealing plate 2 is driven to move until the movable sealing plate 2 pushes the movable mold 4 to combine with the fixed mold 3. At this time, the fixed mold core 6 and the movable mold core 8 are combined together under the action of the positioning component to form a closed cavity between the two. During the docking process, in order to avoid a gap or an unstable pressure area between the docking position of the fixed mold core 6 and the movable mold core 8, which may cause part of the material to leak out at the gap during the injection molding process, resulting in a large deviation in the size of the finished product, thereby affecting the dimensional accuracy. When the movable mold 4 and the fixed mold 3 are docked, the fixed mold core 6 and the movable mold core 8 can be docked together quickly and accurately under the action of the positioning component. At this time, the position locking part is in a closed state. At this time, the pressure-equalizing installation part automatically adjusts the position of the movable mold core 8 in the movable mold groove 9 according to the different pressures at various positions of the fixed mold core 6 and the movable mold core 8 when the fixed mold core 6 and the movable mold core 8 are docked, until the pressures at the docking positions between the movable mold core 8 and the fixed mold core 6 are the same. Then, the position locking part can be started to fix the position of the movable mold core 8 in the movable mold groove 9, thereby improving the accuracy and tightness of the matching between the fixed mold core 6 and the movable mold core 8, thereby improving the processing accuracy. At this time, the injection molding machine can be started, and the material can be injected into the cavity between the fixed mold core 6 and the movable mold core 8 through the injection molding tube 5. After the finished product is cooled and formed, the movable sealing plate 2 is retracted to separate the fixed mold 3 and the movable mold 4. Then, the finished product is taken out to complete the injection molding operation.

[0022] The above, such as Figures 4 to 7 As shown, the pressure-equalizing installation portion includes a plug-in cylinder 10, a fixing sleeve 11 and a rubber ring 12. Two groups of plug-in cylinders 10 are symmetrically and fixedly installed on one side of the movable mold core 8 close to the movable mold groove 9. Each group of plug-in cylinders 10 is provided with a plurality of plug-in cylinders. A fixing sleeve 11 is coaxially sleeved on each plug-in cylinder 10. The fixing sleeve 11 is fixedly connected to the movable mold groove 9. A rubber ring 12 is coaxially fixedly installed on each fixing sleeve 11. The rubber ring 12 is fixedly connected to the plug-in cylinder 10. The rubber ring 12 is made of high-temperature resistant silicone rubber material and can maintain stable deformation under high-pressure injection molding environment. It also includes a tightening hole 13 and a tightening member. A tightening hole 13 is coaxially opened inside each plug-in cylinder 10. A tightening member is arranged in each tightening hole 13. The tightening member slides with the fixing sleeve 11 to tighten the plug-in cylinder 10.

[0023] Specifically, when the fixed mold core 6 and the movable mold core 8 are connected, they are subjected to pressure. At this time, the rubber ring 12 will be subjected to the pressure between the plug-in cylinder 10 and the fixed sleeve 11, so that the rubber ring 12 is compressed. At this time, the plug-in cylinder 10 will produce a small displacement in the fixed sleeve 11. At the same time, the pressure between the fixed mold core 6 and the movable mold core 8 becomes more uniform. By adjusting the tensioning component, the pressure on the contact surface of the movable mold core 8 and the fixed mold core 6 is evenly distributed, thereby avoiding the gap problem caused by uneven pressure and ensuring the accuracy of the product size.

[0024] The above, such as Figure 5 , Figure 7 As shown, the tensioning component includes a tensioning rod 14 and a spherical tensioning block 15. The tensioning rod 14 is coaxially slidably installed on each fixed sleeve 11, and a spherical tensioning block 15 is arranged inside each tensioning hole 13. The spherical tensioning block 15 is fixedly connected to the tensioning rod 14, wherein each tensioning hole 13 is provided with a contact surface adapted to the spherical tensioning block 15 at one end close to the fixed sleeve 11, and there is a gap between the inner side wall of each fixed sleeve 11 and the plug-in tube 10, and there is a gap between the side wall of each spherical tensioning block 15 and the tensioning hole 13.

[0025] Specifically, when it is necessary to fix the relative position between the fixed mold core 6 and the fixed mold groove 7, the spherical tightening block 15 at the end of the tightening rod 14 is first pressed against the contact surface between the tightening hole 13 and the spherical tightening block 15 until the spherical tightening block 15 is close to the contact surface. The tightening rod 14 can be fixed so that the spherical tightening block 15 is pressed against the contact surface, thereby fixing the relative position of the movable mold core 8 and the movable mold groove 9, ensuring that the movable mold core 8 and the movable mold groove 9 remain stable during the injection molding process, avoiding molding errors caused by position changes, and ensuring production accuracy.

[0026] When the spherical tensioning block 15 fits the contact surface of the tensioning hole 13, due to the setting of the spherical surface, when the axis of the tensioning hole 13 does not coincide with the axis of the tensioning rod 14, or when they cross, the spherical tensioning block 15 can automatically adapt and adjust to ensure that the contact surface fits tightly, which further improves the stability during tensioning and avoids the change in the gap between the plug-in cylinder 10 and the fixed sleeve 11 due to the displacement of the tensioning rod 14, thereby ensuring the accuracy of the docking position of the movable mold core 8 and the fixed mold core 6, thereby ensuring the accuracy of the product size.

[0027] The above, such as Figure 7As shown, the position locking part includes a locking groove 16, a locking frame 17, a spring 18 and a positioning member. A plurality of locking grooves 16 are provided at the bottom of the movable mold groove 9. The plurality of locking grooves 16 correspond to the plurality of fixed sleeves 11 one by one. The locking groove 16 is provided with a positioning area and a sliding area. A locking frame 17 is fixedly installed at the end of each tensioning rod 14. The locking frame 17 is slidably installed in the sliding area. A side of each locking frame 17 close to the positioning area is set as an inclined surface. A spring 18 is fixedly installed between each locking frame 17 and the fixed sleeve 11. A positioning member is installed in each positioning area for fixing the position of the locking frame 17.

[0028] Specifically, when the pressure at the docking position between the fixed mold core 6 and the movable mold core 8 is the same, the relative position between the plug-in tube 10 and the fixed sleeve 11 is in an optimal state. At this time, under the action of the spring 18, the spring 18 releases the pressure and pushes the locking frame 17 to move in the sliding area in the locking groove 16 until the spherical positioning block 21 at the end of the tensioning rod 14 is abutted against the contact surface by the elastic force of the spring 18. At this time, the positioning member is started, and the positioning member contacts the inclined surface of the locking frame 17 to ensure that the locking frame 17 is firmly fixed in the positioning area, thereby fixing the relative position of the movable mold core 8 and the movable mold groove 9, further improving the dimensional accuracy and molding quality of the product.

[0029] The above, such as Figure 7 , Figure 8 As shown, the positioning component includes an electric cylinder 19 and a positioning frame 20. An electric cylinder 19 is installed inside each positioning area. A positioning frame 20 is fixedly installed at the output end of each electric cylinder 19. The positioning frame 20 is slidably installed in the sliding area, and the positioning frame 20 is adapted to the inclined surface of the locking frame 17.

[0030] Specifically, when the locking frame 17 is fixed in the positioning area of ​​the locking groove 16, the electric cylinder 19 is started, and the electric cylinder 19 pushes the positioning frame 20 to move until the positioning frame 20 is tightly fitted to the inclined surface of the locking frame 17, thereby fixing the position of the locking frame 17 to ensure the stability of the overall structure.

[0031] like Figures 2 to 4 As shown, the injection tube 5 is installed on the fixed mold 3 for conveying materials during molding. The positioning component is installed on the mold group for guiding the movable mold 4 when the fixed mold 3 is docked with the movable mold 4. The positioning component includes a positioning block 21 and a positioning groove 22. Four positioning blocks 21 are symmetrically and fixedly installed on the fixed mold core 6, and four positioning grooves 22 are symmetrically opened on the movable mold core 8. The four positioning grooves 22 correspond to and match the four positioning blocks 21 one by one. It also includes a guide column 23. Four guide columns 23 are symmetrically and fixedly installed on the fixed mold 3. Guide holes 24 are opened at positions corresponding to the guide columns 23 on the movable mold 4, and the guide holes 24 are matched with the guide columns 23.

[0032] Specifically, during the injection molding process, the movable closing plate 2 is driven to move until the movable closing plate 2 pushes the movable mold 4, and the guide hole 24 on the movable mold 4 is completely aligned with the guide column 23, ensuring that the movable mold core 8 is accurately returned to its position. At the same time, the positioning groove 22 on the movable mold core 8 is precisely matched with the positioning block 21 on the fixed mold core 6 to form a stable positioning structure, ensuring that the mold remains consistent during the injection molding process and improving the docking accuracy.

[0033] The working principle or usage process of this application is: During use, first install the fixed sealing plate 1 and the movable sealing plate 2 on the fixed side and the movable side of the injection molding machine respectively, then install the fixed mold core 6 and the movable mold core 8 on the fixed mold 3 and the movable mold 4 respectively, and adjust the position between the fixed mold core 6 and the movable mold core 8 to avoid offset and the like when the mold is closed, then connect the discharge port of the injection molding machine with the injection tube 5, and start the injection molding operation. At this time, drive the movable sealing plate 2 to move, and the movable sealing plate 2 drives the movable mold 4 and the movable mold core 8 to move. The guide hole 24 on the movable mold 4 is fully aligned with the guide column 23 to ensure that the movable mold core 8 is accurately returned to its position. At the same time, the positioning groove 22 on the movable mold core 8 is precisely matched with the positioning block 21 on the fixed mold core 6 to form a stable positioning structure to ensure that the mold remains consistent during the injection molding process.

[0034] Until the movable sealing plate 2 pushes the movable mold 4 to combine with the fixed mold 3, the fixed mold core 6 and the movable mold core 8 are combined together under the action of the positioning component, and a closed cavity is formed between the two. During the docking process, in order to avoid a gap or an unstable pressure area between the docking position of the fixed mold core 6 and the movable mold core 8, which may cause part of the material to leak out at the gap during the injection molding process, resulting in a large deviation in the size of the finished product, thereby affecting the dimensional accuracy. When the movable mold 4 and the fixed mold 3 are docked, they are subjected to pressure. At this time, the rubber ring 12 will be subjected to the pressure between the plug-in cylinder 10 and the fixed sleeve 11, so that the rubber ring 12 is compressed. At this time, the plug-in cylinder 10 will produce a small displacement in the fixed sleeve 11. At the same time, the pressure between the fixed mold core 6 and the movable mold core 8 becomes more uniform, and then the relative position between the movable mold core 8 and the movable mold groove 9 is fixed.

[0035] When the pressure at the docking position between the fixed mold core 6 and the movable mold core 8 becomes uniform, the relative position between the plug-in tube 10 and the fixed sleeve 11 is in the optimal state. At this time, under the action of the spring 18, the spring 18 releases the pressure and pushes the locking frame 17 to move in the sliding area in the locking groove 16 until the spherical positioning block 21 at the end of the tensioning rod 14 is abutted against the contact surface by the elastic force of the spring 18. Due to the setting of the spherical surface, when the axis of the tensioning hole 13 does not coincide with the axis of the tensioning rod 14 or intersects, the spherical tensioning block 15 can automatically adapt and adjust to ensure the close fit of the contact surface, which further improves the stability during tensioning, thereby ensuring the accuracy of the docking position of the movable mold core 8 and the fixed mold core 6. Then start the electric cylinder 19, and the electric cylinder 19 pushes the positioning frame 20 to move until the positioning frame 20 is closely fitted to the inclined surface of the locking frame 17, thereby fixing the position of the locking frame 17, and the relative position of the movable mold core 8 and the movable mold groove 9 can be fixed, further improving the dimensional accuracy and molding quality of the product.

[0036] Then the injection molding operation begins. At this time, the injection molding machine is started, and the material is injected into the cavity between the fixed mold core 6 and the movable mold core 8 through the injection tube 5. After the finished product is cooled and formed, the movable sealing plate 2 is retracted to separate the fixed mold 3 and the movable mold 4, and then the finished product is taken out to complete the injection molding operation.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision injection mold for a car seat guard plate, comprising a fixed cover plate (1) and a movable cover plate (2), a mold group being installed between the fixed cover plate (1) and the movable cover plate (2), the mold group comprising a fixed mold (3) and a movable mold (4), the fixed mold (3) being installed on the fixed cover plate (1), and the movable mold (4) being installed on the movable cover plate (2), characterized in that: Also includes: An isostatic mold core assembly, the fixed mold (3) and the movable mold (4) are both equipped with the isostatic mold core assembly, and is used to press the fixed mold (3) and the movable mold (4) tightly before injection molding; An injection molding tube (5), the injection molding tube (5) being mounted on the fixed mold (3) and used for conveying materials during molding; A positioning component is installed on the mold set and is used to guide the movable mold when the fixed mold (3) and the movable mold (4) are docked.

2. A high-precision injection mold for a car seat guard plate according to claim 1, characterized in that: The isostatic mold core assembly comprises: A fixed mold core (6), the fixed mold core (6) being detachably mounted in a fixed mold groove (7) on the fixed mold (3); Wherein, the tail end of the injection tube (5) is connected to the fixed mold core (6); A movable mold core (8), the movable mold core (8) being detachably arranged in a movable mold groove (9) on the movable mold (4), a gap being present between the movable mold core (8) and the movable mold groove (9), the fixed mold core (6) being adapted to the movable mold core (8), and forming a closed molding cavity when the molds are closed; A pressure-equalizing mounting portion, the pressure-equalizing mounting portion being mounted between the movable mold core (8) and the movable mold groove (9) and being used to press the fixed mold core (6) and the movable mold core (8) when the mold is closed; A position locking portion, the position locking portion is mounted on the movable die (4) and is used to fix the position of the pressure equalizing mounting portion.

3. A high-precision injection mold for a car seat guard plate according to claim 2, characterized in that: The pressure equalizing installation part comprises: Insertion cylinders (10), two groups of the insertion cylinders (10) are symmetrically and fixedly installed on one side of the movable mold core (8) close to the movable mold groove (9), and each group of the insertion cylinders (10) is provided with a plurality of insertion cylinders; A fixed sleeve (11), wherein each of the plug-in cylinders (10) is coaxially sleeved with the fixed sleeve (11), and the fixed sleeve (11) is fixedly connected to the movable mold groove (9); A rubber ring (12), wherein each of the fixing sleeves (11) is coaxially fixedly mounted with the rubber ring (12), and the rubber ring (12) is fixedly connected to the plug-in cylinder (10).

4. The high-precision injection mold for a car seat guard plate according to claim 3, characterized in that: Also includes: A tightening hole (13), wherein each of the plug-in tubes (10) is coaxially provided with the tightening hole (13); A tensioning member, wherein each of the tensioning holes (13) is provided with a tensioning member, the tensioning member slidably cooperates with the fixing sleeve (11) and is used to tighten the plug-in cylinder (10).

5. The high-precision injection mold for a car seat guard plate according to claim 4, characterized in that: The tensioning member comprises: A tension rod (14), wherein each of the fixing sleeves (11) is coaxially slidably mounted with the tension rod (14); A spherical tensioning block (15), wherein each of the tensioning holes (13) is provided with the spherical tensioning block (15), and the spherical tensioning block (15) is fixedly connected to the tensioning rod (14); Wherein, each of the tightening holes (13) is provided with a contact surface adapted to the spherical tightening block (15) at one end close to the fixing sleeve (11).

6. The high-precision injection mold for a car seat guard plate according to claim 5, characterized in that: There is a gap between the inner side wall of each fixing sleeve (11) and the plug-in tube (10), and there is a gap between the side wall of each spherical tensioning block (15) and the tensioning hole (13).

7. A high-precision injection mold for a car seat guard plate according to claim 6, characterized in that: The position locking portion comprises: A locking groove (16), wherein a plurality of the locking grooves (16) are provided at the bottom of the movable mold groove (9), the plurality of locking grooves (16) correspond to the plurality of fixed sleeves (11) one by one, and the locking grooves (16) are provided with a positioning area and a sliding area; A locking frame (17), wherein the end of each tension rod (14) is fixedly mounted with the locking frame (17), the locking frame (17) is slidably mounted in the sliding area, and a side of each locking frame (17) close to the positioning area is arranged as an inclined surface; A spring (18), wherein the spring (18) is fixedly mounted between each locking frame (17) and the fixing sleeve (11); A positioning component, each of the positioning areas is equipped with the positioning component, and is used to fix the position of the locking frame (17).

8. The high-precision injection mold for a car seat guard plate according to claim 7, characterized in that: The positioning member comprises: An electric cylinder (19), wherein the electric cylinder (19) is installed inside each of the positioning areas; A positioning frame (20), wherein the output end of each electric cylinder (19) is fixedly mounted with the positioning frame (20), the positioning frame (20) is slidably mounted in the sliding area, and the positioning frame (20) is adapted to the inclined surface of the locking frame (17).

9. The high-precision injection mold for a car seat guard plate according to claim 2, characterized in that: The positioning component comprises: Positioning blocks (21), four of which are symmetrically and fixedly mounted on the fixed mold core (6); Positioning grooves (22), four positioning grooves (22) are symmetrically provided on the movable mold core (8), and the four positioning grooves (22) correspond to and fit the four positioning blocks (21) one by one.

10. The high-precision injection mold for a car seat guard plate according to claim 9, characterized in that: It also comprises guide posts (23), four of which are symmetrically and fixedly mounted on the fixed mould (3), and guide holes (24) are provided at positions on the movable mould (4) corresponding to the guide posts (23), the guide holes (24) being adapted to fit the guide posts (23).

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