Automobile heat dissipation grille forming die

Abstract

The utility model discloses an automobile heat dissipation grating forming die which comprises a panel, a plate A, a plate B, an ejector plate, a bottom plate and the like. The plate A is provided with a heating assembly heating runner to ensure uniform fluidity of an injection molding material; a rear mold core of the plate B is provided with a bulge and a strip-shaped groove, and is used for forming heat dissipation hole grids of a heat dissipation grid and a supporting partition plate; the ejection mechanism on the ejector plate is composed of an inclined ejection assembly, an ejector pin, a spring and the like and is matched with a limiting cylinder and a second guide column on the bottom plate, and efficient demolding of the heat dissipation grating is achieved. In addition, the heating assembly is accurately positioned through the containing groove in the plate A, and heat loss is reduced through the heat insulation plate. Compared with the prior art, the mold has the advantages that by optimizing the structural design, the problems that the temperature of a heating assembly cannot be accurately controlled, an ejection mechanism is unreasonable, the forming precision of a complex structure is low and the like are solved, the forming quality and the production efficiency of the heat dissipation grids are effectively improved, the defective rate of the heat dissipation grids is reduced, and the mold has good application value.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of forming injection molding, and specifically relates to an automobile heat dissipation grille forming die. BACKGROUND

[0002] The automobile heat dissipation grille, as a key component of the automobile appearance and heat dissipation system, plays an important role in the performance and appearance of the automobile. The forming quality directly affects the heat dissipation effect and the overall image of the vehicle, and therefore, the performance of the heat dissipation grille forming die is crucial.

[0003] In the existing automobile heat dissipation grille forming die technology, a relatively conventional die structure is usually adopted. Generally composed of a die plate combination, the heat dissipation grille is formed by injection molding in the die cavity. The die is provided with a core and a cavity, and the injection molding machine injects molten plastic, which is solidified after cooling to form the heat dissipation grille.

[0004] However, the existing technology has many deficiencies. First, the heating assembly is designed simply and cannot accurately control the temperature of the flow channel, resulting in uneven flowability of the plastic during injection molding, which causes quality problems such as uneven surface and inconsistent internal structure of the heat dissipation grille. Second, the ejection mechanism is unreasonable, and the heat dissipation grille does not separate smoothly from the die during ejection, which easily causes deformation or damage of the heat dissipation grille, reducing the yield. In addition, for complex structures on the heat dissipation grille, such as heat dissipation hole grids and support partitions of specific shapes, the existing die is difficult to meet the high-precision forming requirements and cannot produce high-quality heat dissipation grilles. The automobile heat dissipation grille forming die aims to solve these problems and improve the forming quality and production efficiency through optimized structure design. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the above deficiencies and provides an automobile heat dissipation grille forming die, which heats the flow channel through the heating assembly to ensure uniform flowability of the injection molding material. The heat dissipation holes and support partitions of the heat dissipation grille are accurately formed through the protrusions and strip grooves on the back die core. The cooperation of the inclined ejector assembly and the ejection mechanism realizes efficient demolding of the heat dissipation grille, avoids deformation or damage of the heat dissipation grille, and thus improves the forming quality and production efficiency of the heat dissipation grille.

[0006] Technical solution: The utility model provides a kind of automobile heat dissipation grille forming die including panel, A plate, B plate, ejector plate, bottom plate;The panel, A plate, B plate, ejector plate, bottom plate are sequentially arranged, the A plate is connected with front die core on B plate side, the A plate is equipped with heating assembly on panel side, for heating runner, the B plate is connected with rear die core on A plate side, a group of protrusions are equipped on the rear die core, the ejector plate is equipped with ejection mechanism, the ejection mechanism is arranged in B plate, the output end portion of front die core, rear die core, ejection mechanism jointly constitutes die cavity, heat dissipation grille is injection molded in die cavity, the protrusion is used to form the heat dissipation hole grid on heat dissipation grille, when mould opens, the ejection mechanism is pressed heat dissipation grille, makes heat dissipation grille and rear die core separate.

[0007] Further, a kind of automobile heat dissipation grille forming die in the application, the rear die core is equipped with horizontal and vertical interlaced strip-shaped groove, and the strip-shaped groove is used to form the support partition on heat dissipation grille.

[0008] Further, the automobile heat dissipation grille forming die in the application, the A plate near the panel side is further provided with a containing groove, the heating assembly is clamped in the containing groove, the heating assembly comprises a heating pipe and a clamping piece, the heating pipe is embedded in the clamping piece, and the clamping piece is clamped in the containing groove. The containing groove provides accurate positioning and mounting position for the heating assembly, ensures that the heating assembly can be stably arranged on the A plate side near the panel, makes the heating assembly closely combined with the A plate, avoids displacement of the heating assembly in the process of die working, affects the heating effect, the heating pipe is embedded in the clamping piece, the clamping piece plays a role in fixing and protecting the heating pipe, meanwhile, the combined mode is convenient for installation and replacement of the heating pipe. The clamping piece is clamped in the containing groove, further realizes overall installation of the heating assembly in the die, ensures the relative position relationship between the heating assembly and other parts of the die, and makes the heating assembly capable of accurately heating the required flow channel.

[0009] Further, the automobile heat dissipation grille forming die in the application, the top pin plate comprises a square iron, a top pin bottom plate and a top pin panel, the square iron and the top pin bottom plate are arranged on the bottom plate, the top pin bottom plate is arranged between the two square irons, and the top pin panel is arranged on the side, away from the bottom plate, of the top pin bottom plate. The square iron is arranged on the bottom plate, thereby providing vertical support for the top pin plate, determining the height position of the top pin plate in the die, limiting movement of the top pin plate in the horizontal direction, and ensuring stability and position accuracy of the top pin plate in the die. The top pin bottom plate is arranged between the two square irons and forms a stable frame structure together with the square irons, thereby providing a mounting basis for the top pin panel and the ejection mechanism, the top pin panel is arranged on the side, away from the bottom plate, of the top pin bottom plate, thereby providing a mounting platform for the ejection mechanism (such as an inclined ejection assembly and a top pin), enabling the ejection mechanism to be accurately mounted on the top pin plate, and ensuring that the ejection mechanism can smoothly eject the heat dissipation grille from the die when the die is opened.

[0010] Further, the automobile heat dissipation grille forming die in the application, the top pin plate comprises a square iron, a top pin bottom plate and a top pin panel, the square iron and the top pin bottom plate are arranged on the bottom plate, the top pin bottom plate is arranged between the two square irons, and the top pin panel is arranged on the side, away from the bottom plate, of the top pin bottom plate. The square iron is arranged on the bottom plate, thereby providing vertical support for the top pin plate, determining the height position of the top pin plate in the die, limiting movement of the top pin plate in the horizontal direction, and ensuring stability and position accuracy of the top pin plate in the die. The top pin bottom plate is arranged between the two square irons and forms a stable frame structure together with the square irons, thereby providing a mounting basis for the top pin panel and the ejection mechanism, the top pin panel is arranged on the side, away from the bottom plate, of the top pin bottom plate, thereby providing a mounting platform for the ejection mechanism (such as an inclined ejection assembly and a top pin), enabling the ejection mechanism to be accurately mounted on the top pin plate, and ensuring that the ejection mechanism can smoothly eject the heat dissipation grille from the die when the die is opened.

[0011] Further, the automobile heat dissipation grille forming die in the application, the oblique supporting top end is provided with a vertical groove, the vertical groove is used for forming the second partition strip of the heat dissipation grille, the bottom end of the oblique supporting and the oblique supporting seat is connected in an I-shaped, the oblique supporting seat is provided with a convex-shaped transverse groove, and the I-shaped end of the oblique supporting is arranged in the convex-shaped transverse groove of the oblique supporting seat.The I-shaped design of the bottom end of the oblique supporting is matched with the convex-shaped transverse groove on the oblique supporting seat, the I-shaped end is embedded in the convex-shaped transverse groove, and a stable connecting structure is formed.The connection can not only ensure the stable installation of the oblique supporting in the oblique supporting seat, but also provide a good guiding effect for the oblique supporting in the oblique movement process, and ensure the accuracy of the movement track.

[0012] Further, the automobile heat dissipation grille forming die in the application, the ejecting mechanism further includes a group of ejecting pins, a group of springs and a group of first guide columns, the ejecting pins are installed on the ejecting pin panel, the first guide columns are installed on the bottom plate, the springs correspond to the first guide columns and are sleeved on the first guide columns, one end of the spring is in contact with the ejecting pin panel, and the other end is in contact with the B plate.The ejecting pins are installed on the ejecting pin panel, and when the mold is opened, the ejecting pins can directly act on specific parts of the heat dissipation grille along with the movement of the ejecting pin panel, give the heat dissipation grille a vertical ejecting force, and assist the oblique supporting assembly in smoothly ejecting the heat dissipation grille from the mold, especially for some large-area or relatively flat parts, the ejecting pins can more effectively separate the heat dissipation grille from the mold, the springs are sleeved on the first guide columns, one end of the spring is in contact with the ejecting pin panel, and the other end is in contact with the B plate.During the ejecting process when the mold is opened, the spring can play a buffering role, so that the impact force of the ejecting pin panel and the ejecting pins when ejecting the heat dissipation grille is not too large, and the heat dissipation grille is prevented from being deformed or damaged.When the mold is closed, the spring can provide a reset force to help the ejecting pin panel and the ejecting pins return to the initial position, so as to prepare for the next injection molding.The first guide columns are installed on the bottom plate to provide accurate guidance for the movement of the ejecting pin panel, ensure that the ejecting pin panel maintains a stable direction during the up-down movement, and thus ensure that the ejecting pins can accurately eject the heat dissipation grille, and avoid damage to the heat dissipation grille or the mold due to the movement deviation of the ejecting pins.

[0013] Further, the automobile heat dissipation grille forming die in the application, the bottom plate is provided with a group of limiting cylinders and a group of second guide columns, the limiting cylinders are arranged on the ejecting pin bottom plate and the ejecting pin panel, the end, away from the bottom plate, of the limiting cylinder is in contact with the B plate, and the second guide columns are arranged on the ejecting pin panel and the B plate.The limiting cylinders are arranged on the ejecting pin bottom plate and the ejecting pin panel, and the end, away from the bottom plate, of the limiting cylinder is in contact with the B plate.During the opening and closing of the mold, the limiting cylinders can limit the movement stroke of the ejecting pin bottom plate and the ejecting pin panel, prevent the ejecting pin panel from moving upward excessively and deviating from the normal working position, or colliding with other components, and ensure that the movement of the ejecting mechanism is within a safe and reasonable range.

[0014] Further, the automobile heat dissipation grille forming die in the application is provided with a heat insulation plate connected to the side of the panel away from the bottom plate. In the injection molding process, some components of the mold (such as the heating assembly on the A plate) will generate heat. The heat insulation plate is connected to the side of the panel away from the bottom plate, which can effectively block the heat transfer from the inside of the mold to the outside, reducing the heat loss.

[0015] The above technical scheme can have the following beneficial effects:

[0016] 1. The automobile heat dissipation grille forming die optimizes the design of the heating assembly, and the heating assembly is clamped in the accommodating groove on the side of the A plate close to the panel. The combination of the heating pipe and the clamping piece can not only accurately control the temperature of the flow channel, ensure the uniformity of the plastic flow in the injection molding process, avoid quality problems such as uneven surface and inconsistent internal structure of the heat dissipation grille, but also facilitate the installation and replacement of the heating pipe, improve the heating stability and maintenance convenience of the mold, and thus improve the forming quality of the heat dissipation grille.

[0017] 2. The automobile heat dissipation grille forming die is provided with protrusions and horizontal and vertical strip-shaped grooves on the rear mold core, which can accurately form the heat dissipation hole grid and the support partition plate of the heat dissipation grille, meet the high-precision forming requirements of the complex structure on the heat dissipation grille, make the heat dissipation grille have reasonable internal support structure while having heat dissipation function, meet the appearance design and assembly requirements of the automobile, and improve the overall quality of the heat dissipation grille.

[0018] 3. The automobile heat dissipation grille forming die rationally designs the ejection mechanism, including the cooperation of the inclined ejection assembly, the ejector pin, the spring and the first guide column, and the setting of the limiting cylinder on the bottom plate and the second guide column, so as to realize efficient demolding of the heat dissipation grille. The inclined ejection assembly provides inclined ejection power, the ejector pin provides vertical ejection force, the spring plays a buffering and resetting role, the first guide column ensures the accurate guidance of the movement of the ejector pin panel, the limiting cylinder limits the movement stroke of the ejector pin bottom plate and the ejector pin panel, and the second guide column provides guidance for the movement of the ejector pin panel, avoiding the problem that the heat dissipation grille and the mold are not smoothly separated during ejection, effectively preventing the deformation or damage of the heat dissipation grille, and improving the yield rate and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the automobile heat dissipation grille forming die.

[0020] Figure 2 It is an exploded schematic view A of the automobile heat dissipation grille forming die.

[0021] Figure 3 It is an exploded schematic view B of the automobile heat dissipation grille forming die.

[0022] Figure 4 It is a section view of the automobile heat dissipation grille forming die of the utility model.

[0023] Figure 5 It is Figure 4 the enlarged view of A area.

[0024] Figure 6 It is a heating assembly schematic view of the automobile heat dissipation grille forming die of the utility model.

[0025] Figure 7 It is Figure 6 the enlarged view of B area.

[0026] Figure 8 It is a rear die core schematic view of the automobile heat dissipation grille forming die of the utility model.

[0027] Figure 9 It is Figure 8 the enlarged view of C area.

[0028] Figure 10 It is a inclined top assembly schematic view of the automobile heat dissipation grille forming die of the utility model.

[0029] Figure 11 It is a heat dissipation grille structure schematic view.

[0030] Description of the drawings of the specification: 1 - panel, 2 - A plate, 3 - B plate, 4 - thimble plate, 5 - bottom plate, 21 - front die core, 22 - heating assembly, 23 - containing groove, 31 - rear die core, 311 - protrusion, 312 - strip-shaped groove, 41 - ejection mechanism, 411 - inclined top assembly, 4111 - inclined top seat, 4112 - inclined top support, 41121 - vertical groove, 412 - thimble, 413 - spring, 414 - first guide column, 42 - square iron, 43 - thimble bottom plate, 44 - thimble panel, 51 - limit cylinder, 52 - second guide column, 6 - die cavity, 7 - heat dissipation grille, 71 - heat dissipation hole grid, 72 - support partition, 73 - second partition strip, 8 - heat insulation plate. DETAILED DESCRIPTION

[0031] The utility model is further illustrated below in combination with the drawings and specific embodiments.

[0032] Embodiment 1

[0033] As Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10 show a kind of automobile heat dissipation grille forming die, and Figure 11 The heat dissipation grille shown in.

[0034] Mold installation and preparation: the panel 1, A plate 2, B plate 3, thimble plate 4, bottom plate 5 in turn according to the order of assembly. The front die 21 is installed on the side of A plate 2 close to B plate 3, ensure that the installation is firm and accurate position. The heating pipe 221 is embedded in the card 222, and then the combination of heating assembly 22 is clamped into the containing groove 23 on the side of A plate 2 close to the panel 1, so that the heating assembly 22 is closely attached to the A plate 2, the power supply line of the heating assembly 22 is connected, and the heating function is ensured to be normal.

[0035] Rear die installation and processing: the rear die 31 is installed on the side of B plate 3 close to A plate 2, the array distribution of convex 311 and horizontal and vertical strip groove 312 on the rear die 31 can be clearly seen. Before installation, check whether the convex 311 and the strip groove 312 are damaged or have foreign matter, and clean and repair them if there are any, to ensure that they can be normally used for forming the heat dissipation hole grid 71 and the support partition plate 72 of the heat dissipation grid 7.

[0036] Thimble plate assembly: a square iron 42 is placed on the bottom plate 5, and the thimble bottom plate 43 is placed between the two square irons 42 and fixed on the bottom plate 5. The thimble panel 44 is installed on the side of the thimble bottom plate 43 away from the bottom plate 5, and the thimble panel 44 is connected stably with the thimble bottom plate 43.

[0037] Inclined top assembly installation: the inclined top seat 4111 is embedded in the corresponding groove on the thimble panel 44, and the inclined top seat 4111 is installed in place and cannot shake. The bottom end of the inclined top support 4112 is installed in the inclined top seat 4111, so that the I-shaped end of the inclined top support 4112 is closely matched with the L-shaped transverse groove of the inclined top seat 4111. The inclined top support 4112 is provided with a vertical slot 41121 at the top end, which is used to form the second partition 73 of the heat dissipation grid 7.

[0038] Thimble, spring and first guide post installation: a group of thimbles 412 are installed on the thimble panel 44, and the thimbles 412 are installed vertically and firmly. A group of first guide posts 414 are installed on the bottom plate 5, and a group of springs 413 are respectively sleeved on the first guide posts 414. One end of the spring 413 abuts against the thimble panel 44, and the other end abuts against the B plate 3, so that the spring 413 can normally play the role of buffering and resetting.

[0039] Limiting cylinder and second guide post installation: a group of limiting cylinders 51 are installed on the bottom plate 5, so that the limiting cylinders 51 are provided through the thimble bottom plate 43 and the thimble panel 44, and the end of the limiting cylinder 51 away from the bottom plate 5 abuts against the B plate 3, so as to limit the movement stroke of the thimble plate 4. At the same time, a group of second guide posts 52 are installed, so that they are provided through the thimble panel 44 and the B plate 3, and provide guidance for the movement of the thimble panel 44.

[0040] Thermal insulation plate installation: install thermal insulation plate 8 on the side of panel 1 away from base plate 5, ensure that thermal insulation plate 8 is installed flat and tightly connected with panel 1 to effectively block heat loss inside the mold.

[0041] Injection molding production: install the assembled mold on the injection molding machine, debug the injection molding machine parameters, including temperature, pressure, injection time, etc. Inject molten plastic raw materials into mold cavity 6, and heat flow channel with heating assembly 22 to ensure that the plastic raw materials maintain good fluidity in the flow channel and uniformly fill the mold cavity 6. After the plastic raw materials cool and solidify in the mold cavity 6, the heat dissipation grid 7 is formed.

[0042] Heat dissipation grid demolding: when the mold is opened, the ejection mechanism 41 starts to work. The inclined ejection support 4112 of the inclined ejection assembly 411 slides upward along the inclined hole of the B plate 3 to provide inclined ejection power for the heat dissipation grid demolding. At the same time, the ejector pin 412 is driven by the ejector pin panel 44 to give the heat dissipation grid a vertical ejection force to assist the heat dissipation grid demolding. The spring 413 plays a buffering role during the ejection process to avoid deformation or damage of the heat dissipation grid due to excessive ejection impact force. The limiting cylinder 51 limits the movement stroke of the ejector pin plate 4 to prevent the ejector pin panel 44 from excessive movement. Finally, the heat dissipation grid 7 is successfully separated from the mold, completing a one-time injection molding production process.

[0043] The above examples are exemplary, the purpose is to illustrate the technical concept and characteristics of the present application, so that those skilled in the art can understand the content of the present application and implement it accordingly, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An automobile heat dissipation grille forming die, characterized in that: comprising: a panel (1), an A plate (2), a B plate (3), a ejector plate (4), a bottom plate (5); the panel (1), the A plate (2), the B plate (3), the ejector plate (4), the bottom plate (5) are sequentially arranged, the A plate (2) is connected with a front die core (21) on the side close to the B plate (3), the A plate (2) is provided with a heating assembly (22) on the side close to the panel (1) for heating the flow channel, the B plate (3) is connected with a rear die core (31) on the side close to the A plate (2), a group of protrusions (311) are arranged on the rear die core (31), an ejection mechanism (41) is arranged on the ejector plate (4), the ejection mechanism (41) is arranged through the B plate (3), the output end of the front die core (21), the rear die core (31) and the ejection mechanism (41) jointly constitutes a die cavity (6), a heat dissipation grille (7) is injection molded in the die cavity (6), the protrusions (311) are used for forming heat dissipation hole grids (71) on the heat dissipation grille (7), when the mold is opened, the ejection mechanism (41) presses against the heat dissipation grille (7), so that the heat dissipation grille (7) and the rear die core (31) are separated.

2. The automobile heat dissipation grille forming die according to claim 1, characterized in that: the rear die core (31) is provided with horizontal and vertical interlaced strip grooves (312), and the strip grooves (312) are used for forming support partitions (72) on the heat dissipation grille (7).

3. The automobile heat dissipation grille forming die according to claim 2, characterized in that: the A plate (2) is further provided with a containing groove (23) on the side close to the panel (1), the heating assembly (22) is clamped in the containing groove (23), the heating assembly (22) comprises a heating pipe (221) and a clamping piece (222), the heating pipe (221) is embedded in the clamping piece (222), and the clamping piece (222) is clamped in the containing groove (23).

4. The automobile cooling grille forming die according to claim 3, characterized in that: the ejector plate (4) comprises a square iron (42), an ejector bottom plate (43) and an ejector panel (44), the square iron (42) and the ejector bottom plate (43) are arranged on the bottom plate (5), the ejector bottom plate (43) is arranged between the two square irons (42), and the ejector bottom plate (43) is provided with the ejector panel (44) on the side away from the bottom plate (5).

5. The automobile heat dissipation grille forming die according to claim 4, characterized in that: the ejection mechanism (41) comprises a pair of inclined ejection assemblies (411), the inclined ejection assembly (411) comprises an inclined ejection seat (4111) and an inclined ejection support (4112), the inclined ejection seat (4111) is embedded in a groove on the ejector panel (44), the inclined ejection support (4112) is installed at the bottom end of the inclined ejection seat (4111), is arranged through the B plate (3), and slides up and down along the inclined hole arranged on the B plate (3).

6. The automobile heat dissipation grille forming die according to claim 5, characterized in that: The oblique roof support (4112) top end is provided with vertical groove (41121), the vertical groove (41121) is used for forming the second partition (73) of heat dissipation grille (7), the oblique roof support (4112) and the bottom end of the oblique roof seat (4111) connection is I-shaped, the oblique roof seat (4111) is provided with convex type horizontal groove, the I-shaped end of the oblique roof support (4112) is arranged in the convex type horizontal groove of the oblique roof seat (4111).

7. The automobile heat dissipation grille forming die according to claim 6, wherein: The ejection mechanism (41) further includes a group of ejector pins (412), a group of springs (413) and a group of first guide columns (414), the ejector pins (412) are installed on the ejector pin panel (44), the first guide columns (414) are installed on the bottom plate (5), the springs (413) correspond to the first guide columns (414) and are sleeved in the first guide columns (414), one end of the spring (413) is in contact with the ejector pin panel (44) and the other end is in contact with the B plate (3).

8. The automobile heat dissipation grille forming die according to claim 7, wherein: The bottom plate (5) is provided with a group of limiting cylinders (51) and a group of second guide columns (52), the limiting cylinders (51) are arranged through the ejector pin bottom plate (43) and the ejector pin panel (44), the end of the limiting cylinder (51) away from the bottom plate (5) is in contact with the B plate (3), and the second guide columns (52) are arranged through the ejector pin panel (44) and the B plate (3).

9. The automobile heat dissipation grille forming die according to claim 8, wherein: The panel (1) is connected with the heat insulation plate (8) away from the bottom plate (5).

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