Composite pitched roof external guide rail structure of automobile bumper die

Abstract

The utility model belongs to the technical field of dies, and relates to a composite pitched roof external guide rail structure of an automobile bumper die. The bumper forming die comprises an upper bumper forming die body, a lower bumper forming die body and a bottom plate, and an injection molding flow dividing piece is arranged above the upper bumper forming die body. After injection molding is completed, the mold is opened, the bumper forming lower mold can be kept still through the external guide rail structure, the bumper forming upper mold and the bottom plate synchronously move upwards, a cavity is opened, a formed plastic part is ejected and demolded through the inclined and straight ejection combined ejection assembly, and inclined and straight ejection combined ejection is adopted, so that on one hand, the ejection area is increased, and on the other hand, the ejection efficiency is improved; and on the other hand, the ejection angle is increased, demolding is smoother, an external guide rail structure is matched, the ejection accuracy is further improved, space in the mold is not occupied, and disassembly, assembly and maintenance are easy and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a composite inclined ejector external guide rail structure for an automobile bumper mold. Background Art

[0002] With the development of the automobile industry, consumers have higher and higher requirements for the appearance quality of automobiles. The bumper is the main exterior part of an automobile. Due to the complex structure and large external dimensions of the bumper product, the molds used in production are complex, and the mold opening cost is high. During the ejection and demolding process of existing automobile bumper molds, deviations are likely to occur. If a limiting structure is set, it will occupy the space inside the mold, further increasing the complexity and production cost of the mold, and making subsequent maintenance more difficult. Therefore, there is an urgent need to design a composite inclined ejector external guide rail structure for an automobile bumper mold that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mold for an automobile bumper [Application No.: 202010207923.X], which includes a bottom pin plate provided on a bottom plate. A face pin plate is provided on the bottom pin plate. The bottom surface of the face pin plate abuts against a driving ejector rod of an injection molding machine that sequentially passes through the bottom plate and the bottom pin plate. Two large straight ejector block push rods passing through the core are provided on the face pin plate. A large straight ejector block is provided at the top of each large straight ejector block push rod. The lower ends of the two large straight ejector block push rods are inserted into a slider. The bottom surface of each slider is slidably connected to the working surface of a slide base. The working surface of the slide base is an inclined surface with a higher side near the inclined ejector block and a lower side far from the inclined ejector block, and the inclination angle of the working surface of the slide base is 20° - 22°; the included angle between the inclined guide post and the large straight ejector block push rod is 7° - 9°. Summary of the Invention

[0004] The purpose of the utility model is to provide a composite inclined ejector external guide rail structure for an automobile bumper mold aiming at the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A composite inclined ejector external guide rail structure for an automobile bumper mold includes a bumper forming upper mold, a bumper forming lower mold and a bottom plate. An injection molding shunt part is provided above the bumper forming upper mold. A forming insert plate is provided between the bumper forming upper mold and the bumper forming lower mold. A forming convex surface is provided at the top of the forming insert plate. A forming concave surface is provided inside the bumper forming upper mold. The position of the forming convex surface corresponds to and the shape matches that of the forming concave surface. An inclined straight ejector combined ejecting component that sequentially passes through the bumper forming lower mold and the forming insert plate is provided on the bottom plate. An external guide rail structure and a mold closing alignment plug are provided between the outer walls of the bumper forming upper mold and the bumper forming lower mold. The external guide rail structure and the mold closing alignment plug are parallel to each other.

[0007] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the external guide rail structure includes a plurality of vertical guide rails arranged on the outer wall of the lower mold for bumper molding. A plurality of limiting vertical strips are provided on the outer wall of the upper mold for bumper molding, which penetrate through the vertical guide rails and are slidably matched with the vertical guide rails. One end of the limiting vertical strip is fixedly connected to the outer wall of the upper mold for bumper molding, and the other end is fixedly connected to the bottom plate through a fixed seat.

[0008] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, an ejection and demolding driving member is further provided on the outer wall of the lower mold for bumper molding, and the ejection and demolding driving member is arranged staggeredly with the vertical guide rails.

[0009] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the ejection and demolding driving member includes a plurality of driving oil cylinders arranged on the outer wall of the lower mold for bumper molding, and the power shaft of the driving oil cylinder is connected to the bottom plate.

[0010] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the axis line of the power shaft of the driving oil cylinder is parallel to the center line of the limiting vertical strip.

[0011] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the mold closing alignment plug-in includes a mold closing alignment plate arranged between the outer wall of the upper mold for bumper molding and the outer wall of the lower mold for bumper molding. The mold closing alignment plate is fixedly connected to the outer wall of the lower mold for bumper molding, and the mold closing alignment plate is slidably matched with the chute on the outer wall of the upper mold for bumper molding. The center line of the mold closing alignment plate is parallel to the center line of the limiting vertical strip.

[0012] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, two detachable support side plates are provided between the lower mold for bumper molding and the bottom plate, and the detachable support side plates are arranged staggeredly with the inclined and straight ejector combined ejection assembly.

[0013] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the inclined and straight ejector combined ejection assembly includes a plurality of straight ejector rods and inclined ejector rods. A first embedded ejector block is provided at the top of the straight ejector rod, and a second embedded ejector block is provided at the top of the inclined ejector rod. The first embedded ejector block and the second embedded ejector block respectively match the shape of the molding convex surface.

[0014] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, a sliding connection seat slidably matched with the inclined ejector rod is provided at the bottom of the inclined ejector rod.

[0015] In the above-mentioned composite inclined ejector external guide rail structure of the automobile bumper mold, the injection molding shunt member includes an injection molding main board and an injection molding shunt board, and a plurality of injection molding shunt pipes are provided at the bottom of the injection molding shunt board.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the injection molding process of the present utility model, the upper bumper molding die and the lower bumper molding die are moved closer to each other. The mold closing alignment plug-in can ensure accurate mold closing of the upper bumper molding die and the lower bumper molding die, avoiding deviation, so that the molding convex surface and the molding concave surface cooperate to form a complete cavity. The molten material is injected through the injection molding shunt part, and the material is evenly and quickly injected into the cavity. After the injection molding is completed, the mold is opened. Through the external guide rail structure, it can be ensured that the lower bumper molding die remains stationary, and the upper bumper molding die and the bottom plate move upward synchronously to open the cavity, and the molded plastic part is ejected and demolded by the inclined and straight ejector combined ejecting component. The inclined and straight ejector combined ejecting is adopted. On the one hand, the ejecting area is increased, and on the other hand, the ejecting angle is increased, so the demolding is smoother. And in cooperation with the external guide rail structure, the ejecting accuracy is further improved, without occupying the internal space of the mold, and the disassembly, installation and maintenance are simple and convenient.

[0018] 2. During the injection molding process of the present utility model, the detachable support side plate is used to support the lower bumper molding die and the bottom plate to prevent the lower bumper molding die from sliding down. When it is necessary to open the mold and eject, the detachable support side plate is translated from between the lower bumper molding die and the bottom plate.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. Brief Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the present utility model.

[0021] Figure 2 is the partial structural schematic diagram of the present utility model.

[0022] Figure 3 is the partial structural schematic diagram of the present utility model in another direction.

[0023] Figure 4 is the structural schematic diagram of the upper bumper molding die.

[0024] In the figure: upper bumper molding die 1, lower bumper molding die 2, bottom plate 3, injection molding shunt part 4, molding insert panel 5, molding convex surface 6, molding concave surface 7, inclined and straight ejector combined ejecting component 8, external guide rail structure 9, mold closing alignment plug-in 10, vertical guide rail 11, limit vertical strip 12, fixed seat 13, ejecting and demolding driving part 14, driving oil cylinder 15, mold closing alignment plug board 16, detachable support side plate 17, straight ejector rod 18, inclined ejector rod 19, first embedded ejecting block 20, second embedded ejecting block 21, injection molding main board 22, injection molding shunt board 23, injection molding shunt pipe 24. Detailed Description of the Invention

[0025] The present utility model will be further described below in conjunction with the accompanying drawings.

[0026] As Figures 1-4 shown, a composite inclined ejector external guide rail structure for an automobile bumper mold includes an upper bumper forming die 1, a lower bumper forming die 2 and a bottom plate 3. An injection molding shunt part 4 is arranged above the upper bumper forming die 1. A forming insert plate 5 is arranged between the upper bumper forming die 1 and the lower bumper forming die 2. A forming convex surface 6 is arranged at the top of the forming insert plate 5. A forming concave surface 7 is arranged in the upper bumper forming die 1. The position of the forming convex surface 6 corresponds to and the shape matches that of the forming concave surface 7. An inclined straight ejector combined ejecting assembly 8 is arranged on the bottom plate 3 and sequentially penetrates through the lower bumper forming die 2 and the forming insert plate 5. An external guide rail structure 9 and a mold closing alignment plug-in 10 are arranged between the outer walls of the upper bumper forming die 1 and the lower bumper forming die 2. The external guide rail structure 9 and the mold closing alignment plug-in 10 are parallel to each other.

[0027] In this embodiment, during the injection molding process, the upper bumper forming die 1 and the lower bumper forming die 2 are moved closer to each other. The mold closing alignment plug-in 10 can ensure accurate mold closing of the upper bumper forming die 1 and the lower bumper forming die 2, avoid deviation, and enable the forming convex surface 6 and the forming concave surface 7 to cooperate to form a complete cavity. The molten material is injected and shunted through the injection molding shunt part 4, and the material is evenly and quickly injected into the cavity. After the injection molding is completed, the mold is opened. The external guide rail structure 9 can ensure that the lower bumper forming die 2 remains stationary, and the upper bumper forming die 1 and the bottom plate 3 move upward synchronously to open the cavity. The formed plastic part is ejected and demolded through the inclined straight ejector combined ejecting assembly 8. Using the inclined straight ejector combined ejecting increases the ejection area on the one hand and increases the ejection angle on the other hand, making the demolding smoother. And in cooperation with the external guide rail structure 9, the ejection accuracy is further improved, and the mold internal space is not occupied, and the disassembly, installation, maintenance are simple and convenient.

[0028] Combined with Figure 1 shown, the external guide rail structure 9 includes a plurality of vertical guide rails 11 arranged at the outer wall of the lower bumper forming die 2. A plurality of limit vertical strips 12 are arranged at the outer wall of the upper bumper forming die 1 and penetrate through the vertical guide rails 11 and are slidably matched with the vertical guide rails 11. One end of the limit vertical strip 12 is fixedly connected to the outer wall of the upper bumper forming die 1, and the other end is fixedly connected to the bottom plate 3 through a fixed seat 13.

[0029] Specifically, during the mold opening process, the limit vertical strip 12 and the vertical guide rail 11 are slidably matched, which can further improve the ejection accuracy, does not occupy the mold internal space, and the disassembly, installation, maintenance are simple and convenient. One end of the limit vertical strip 12 is fixedly connected to the outer wall of the upper bumper forming die 1, and the other end is fixedly connected to the bottom plate 3 through a fixed seat 13, which can realize the synchronous upward movement of the upper bumper forming die 1 and the bottom plate 3 to open the cavity.

[0030] Combination Figure 1 As shown, an ejection demoulding driving member 14 is further provided on the outer wall of the bumper forming lower mold 2 , and the ejection demoulding driving member 14 is staggered with the vertical guide rail 11 .

[0031] In this embodiment, the ejection demoulding driving member 14 is used to drive the bumper molding upper mold 1 and the bottom plate 3 to move.

[0032] The ejection demoulding driving member 14 includes a plurality of driving cylinders 15 disposed on the outer wall of the bumper forming lower mold 2 , and the power shafts of the driving cylinders 15 are connected to the bottom plate 3 .

[0033] In this embodiment, the driving cylinder 15 is used to drive the bumper forming upper mold 1 and the bottom plate 3 to move, and the degree of automation is relatively high.

[0034] Combination Figures 1-2 As shown, the axis line of the power shaft of the driving cylinder 15 is parallel to the center line of the limiting vertical bar 12.

[0035] In this embodiment, the axis of the power shaft of the driving cylinder 15 is parallel to the center line of the limiting vertical bar 12 to ensure that there will be no jamming.

[0036] The mold alignment plug-in 10 includes a mold alignment plug-in plate 16 arranged between the outer wall of the bumper molding upper mold 1 and the outer wall of the bumper molding lower mold 2. The mold alignment plug-in plate 16 is fixedly connected to the outer wall of the bumper molding lower mold 2, and the mold alignment plug-in plate 16 is slidably matched with the slide groove of the outer wall of the bumper molding upper mold 1. The center line of the mold alignment plug-in plate 16 is parallel to the center line of the limiting vertical bar 12.

[0037] In this embodiment, during the injection molding process, the bumper molding upper mold 1 and the bumper molding lower mold 2 are brought close to each other, and the mold alignment plug plate 16 can ensure that the bumper molding upper mold 1 and the bumper molding lower mold 2 are accurately molded to avoid deviation.

[0038] Two detachable supporting side plates 17 are arranged between the bumper forming lower die 2 and the bottom plate 3 , and the detachable supporting side plates 17 are staggered with the inclined straight ejector assembly 8 .

[0039] In this embodiment, during the injection molding process, the detachable supporting side panel 17 is used to support the bumper molding lower mold 2 and the bottom plate 3 to prevent the bumper molding lower mold 2 from sliding down. When the mold needs to be opened and ejected, the detachable supporting side panel 17 is translated from between the bumper molding lower mold 2 and the bottom plate 3.

[0040] Combination Figures 2-3As shown, the inclined and straight ejector combined ejector assembly 8 includes a plurality of straight ejector rods 18 and inclined ejector rods 19. A first embedded ejector block 20 is provided at the top of the straight ejector rod 18, and a second embedded ejector block 21 is provided at the top of the inclined ejector rod 19. The first embedded ejector block 20 and the second embedded ejector block 21 respectively match the shape of the forming convex surface 6.

[0041] In this embodiment, during the injection molding process, the first embedded ejector block 20 and the second embedded ejector block 21 cooperate with the forming convex surface 6 to assist in forming the plastic part. After the injection molding is completed, the mold is opened. The straight ejector rod 18 drives the first embedded ejector block 20 to move upward, and the inclined ejector rod 19 drives the second embedded ejector block 21 to move obliquely upward. The inclined and straight ejector combination is used for ejection. On the one hand, the ejection area is increased, and on the other hand, the ejection angle is increased, making the demolding smoother.

[0042] Combined Figure 2 、 Figure 3 As shown, a sliding connection seat that is slidably matched with the inclined ejector rod 19 is provided at the bottom of the inclined ejector rod 19.

[0043] In this embodiment, the sliding connection seat is used to connect the inclined ejector rod 19, facilitating the inclined ejection of the inclined ejector rod 19.

[0044] Combined Figures 1-2 As shown, the injection molding splitter 4 includes an injection molding main board 22 and an injection molding splitter plate 23. A plurality of injection molding splitter tubes 24 are provided at the bottom of the injection molding splitter plate 23.

[0045] In this embodiment, during the injection molding process, the molten material is injected through the injection molding main board 22, and the molten material is split through the injection molding splitter plate 23 and the injection molding splitter tubes 24, and the material is evenly and quickly injected into the mold cavity.

[0046] The working principle of the present utility model is:

[0047] During the injection molding process, the upper bumper molding die 1 and the lower bumper molding die 2 are moved closer to each other. The die - closing alignment insert plate 16 can ensure the accurate die - closing of the upper bumper molding die 1 and the lower bumper molding die 2, avoiding deviation, so that the molding convex surface 6 and the molding concave surface 7 cooperate to form a complete cavity. The first embedded ejector block 20 and the second embedded ejector block 21 cooperate with the molding convex surface 6 to assist in molding the plastic part. The molten material is injected through the injection main board 22, and the molten material is split through the injection manifold 23 and the injection manifold pipes 24, and the material is evenly and quickly injected into the cavity. After the injection molding is completed, the mold is opened. The vertical limiting strip 12 and the vertical guide rail 11 can ensure that the lower bumper molding die 2 remains stationary, and the upper bumper molding die 1 and the bottom plate 3 move upward synchronously to open the cavity. The first embedded ejector block 20 is driven to move upward by the straight ejector rod 18, and the second embedded ejector block 21 is driven to move obliquely upward by the inclined ejector rod 19. The combination of inclined and straight ejection is adopted. On the one hand, the ejection area is increased, and on the other hand, the ejection angle is increased, making the demolding smoother. And in cooperation with the vertical limiting strip 12 and the vertical guide rail 11, the accuracy of ejection is further improved, without occupying the space inside the mold, and the disassembly, installation, maintenance are simple and convenient.

[0048] The driving oil cylinder 15 is used to drive the upper bumper molding die 1 and the bottom plate 3 to move, with a relatively high degree of automation. The axis line of the power shaft of the driving oil cylinder 15 is parallel to the center line of the vertical limiting strip 12, ensuring that there will be no jamming situation.

[0049] During the injection molding process, the detachable support side plate 17 is used to support the lower bumper molding die 2 and the bottom plate 3 to prevent the lower bumper molding die 2 from sliding down. When mold opening and ejection are required, the detachable support side plate 17 is translated from between the lower bumper molding die 2 and the bottom plate 3. The sliding connection seat is used to connect the inclined ejector rod 19, facilitating the inclined ejection of the inclined ejector rod 19.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model.

[0051] Although terms such as upper bumper forming die 1, lower bumper forming die 2, bottom plate 3, injection molding shunt part 4, forming panel 5, forming convex surface 6, forming concave surface 7, inclined and straight ejector combined ejector assembly 8, external guide rail structure 9, mold closing alignment plug-in 10, vertical guide rail 11, limit vertical bar 12, fixed seat 13, ejecting and demolding driving part 14, driving oil cylinder 15, mold closing alignment plug board 16, detachable support side plate 17, straight ejector rod 18, inclined ejector rod 19, first embedded ejector block 20, second embedded ejector block 21, injection molding main board 22, injection molding shunt board 23, injection molding shunt pipe 24 are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A composite inclined top external guide rail structure of an automobile bumper mold, comprising a bumper molding upper mold (1), a bumper molding lower mold (2) and a bottom plate (3), characterized in that: An injection molding flow divider (4) is provided above the bumper molding upper mold (1), a molding panel (5) is provided between the bumper molding upper mold (1) and the bumper molding lower mold (2), a molding convex surface (6) is provided on the top of the molding panel (5), a molding concave surface (7) is provided inside the bumper molding upper mold (1), the molding convex surface (6) and the molding concave surface (7) are corresponding in position and matched in shape, an inclined straight top combined ejection component (8) is provided on the bottom plate (3) and passes through the bumper molding lower mold (2) and the molding panel (5) in sequence, an external guide rail structure (9) and a mold alignment plug-in (10) are provided between the outer wall of the bumper molding upper mold (1) and the outer wall of the bumper molding lower mold (2), and the external guide rail structure (9) and the mold alignment plug-in (10) are parallel to each other.

2. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 1 is characterized in that: The external guide rail structure (9) comprises a plurality of vertical guide rails (11) arranged on the outer wall of the bumper forming lower mold (2); the outer wall of the bumper forming upper mold (1) is provided with a plurality of limiting vertical bars (12) which pass through the vertical guide rails (11) and are slidably matched with the vertical guide rails (11); one end of the limiting vertical bar (12) is fixedly connected to the outer wall of the bumper forming upper mold (1), and the other end is fixedly connected to the bottom plate (3) via a fixing seat (13).

3. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 2 is characterized in that: An ejection demoulding driving member (14) is also provided on the outer wall of the bumper forming lower mold (2), and the ejection demoulding driving member (14) and the vertical guide rail (11) are arranged in an alternating manner.

4. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 3 is characterized in that: The ejection demoulding drive component (14) comprises a plurality of drive cylinders (15) arranged on the outer wall of the bumper forming lower mold (2), and the power shafts of the drive cylinders (15) are connected to the bottom plate (3).

5. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 4 is characterized in that: The axis center line of the power shaft of the driving oil cylinder (15) and the center line of the limiting vertical bar (12) are parallel to each other.

6. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 5, characterized in that: The mold alignment plug-in (10) comprises a mold alignment plug-in plate (16) arranged between the outer wall of the bumper molding upper mold (1) and the outer wall of the bumper molding lower mold (2); the mold alignment plug-in plate (16) is fixedly connected to the outer wall of the bumper molding lower mold (2); the mold alignment plug-in plate (16) is slidably matched with a slide groove on the outer wall of the bumper molding upper mold (1); and the center line of the mold alignment plug-in plate (16) is parallel to the center line of the limiting vertical bar (12).

7. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 6, characterized in that: Two detachable support side plates (17) are arranged between the bumper forming lower die (2) and the bottom plate (3), and the detachable support side plates (17) are arranged alternately with the inclined straight ejection combination ejection assembly (8).

8. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 7, characterized in that: The inclined straight ejector assembly (8) comprises a plurality of straight ejector rods (18) and inclined ejector rods (19), the top of the straight ejector rod (18) is provided with a first embedded ejector block (20), the top of the inclined ejector rod (19) is provided with a second embedded ejector block (21), and the first embedded ejector block (20) and the second embedded ejector block (21) are respectively adapted to the shapes of the molding convex surface (6).

9. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 8, characterized in that: The bottom of the inclined ejector rod (19) is provided with a sliding connection seat which is slidably matched with the inclined ejector rod (19).

10. The composite inclined top external guide rail structure of the automobile bumper mold according to claim 9, characterized in that: The injection molded flow diverter (4) comprises an injection molded main board (22) and an injection molded flow diverter plate (23), and a plurality of injection molded flow diverter pipes (24) are provided at the bottom of the injection molded flow diverter plate (23).

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