An injection mold for the lower trim panel of a car front bumper

Abstract

The present invention relates to the technical field of injection molds, and discloses an injection mold for the lower trim panel of an automotive front bumper, including a lower mold, an upper mold, and four guide rods. Both the lower mold and the upper mold are slidably arranged on the four guide rods, and cylinders are provided on two of the lower guide rods. The present invention can achieve the interruption of the circuit system when the user stands on the carrier plate, so there will be no situation where the user forgets to turn off the circuit and the drive system fails, resulting in the lower mold and the upper mold approaching each other and clamping people. This makes the entire process of taking out the molded part safer, and the carrier plate can be locked when standing on the carrier plate. Even if the user fails to stand firm and falls below the carrier plate and leaves the carrier plate, the carrier plate can still remain stationary. Therefore, the circuit is still disconnected at this time, and there will still be no situation where the drive system fails and the lower mold and the upper mold approach each other and clamp people, further improving safety.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to an injection mold for a lower trim plate of a front bumper of an automobile. Background Art

[0002] Injection molds are tools for producing plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.

[0003] Injection molds are required for the production of the lower trim panel of the front bumper of a car. When in use, the upper mold and the lower mold are driven by the drive component to close and combine to form the internal objects. After completion, the upper mold and the lower mold are separated, and the objects can be taken out. In order to improve safety, a robotic arm is generally used to extend between the two molds to take out the molded parts. However, in actual operations, not all factories have the conditions to install robotic arms, and not all workers can operate in a standardized manner. Therefore, workers may enter between the two molds to remove the molded parts. In this case, the circuit that powers the drive component may be forgotten to be turned off, and the drive component may fail, causing the molds to approach each other and pinch people.

[0004] Therefore, it is necessary to invent an injection mold for the lower trim plate of the front bumper of an automobile to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides an injection mold for a lower trim panel of a front bumper of an automobile to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection mold for a lower trim panel of a front bumper of an automobile, comprising a lower mold, an upper mold and four guide rods, wherein the lower mold and the upper mold are both slidably arranged on the four guide rods, the two lower guide rods are each provided with a cylinder, the bottom of the cylinder is provided with a fixing assembly for fixing it to the guide rods, a slider is slidably installed inside the cylinder, a sliding rod is fixedly installed on the top of the slider, a first spring is fixedly installed on the bottom of the slider, a carrier plate is fixedly installed on the top of the two sliding rods, a top rod is fixedly installed on the bottom of the carrier plate, a support plate is provided below the carrier plate, a push switch is provided on the top of the support plate, and the push switch can turn on and off the circuit system that supplies power to the lower mold and the upper mold.

[0007] Further, an opening communicating with its interior is vertically formed on the outer side of one of the cylinders. A fixing block is fixedly installed on one side of the slider. One end of the fixing block extends outside the opening and is fixedly installed with a vertical plate. A locking assembly for fixing the vertical plate is provided above the cylinder.

[0008] Further, the locking assembly includes a bayonet formed in the upper part of the inner side of the vertical plate. A horizontal groove is formed above the cylinder close to the vertical plate. A clamping plate matched with the bayonet is slidably installed in the horizontal groove. One side of the clamping plate away from the vertical plate is fixedly connected with the inner wall of the horizontal groove through a second spring. A pulling assembly for driving the clamping plate to move away from the vertical plate is provided on the clamping plate.

[0009] Further, when the clamping plate abuts against the vertical plate, the second spring is in a compressed state at this time.

[0010] Further, the pulling assembly includes a triangular block fixed on the top of the clamping plate. A groove is formed on one side of the top of the carrier plate. A top plate is slidably arranged in the groove. The bottom of the top plate is fixedly connected with the bottom wall of the groove through a plurality of third springs. Anti-slip blocks are provided on the tops of both the top plate and the carrier plate. An activity port communicating with the groove is formed at the bottom of the carrier plate. A pressing rod matched with the activity port is fixedly installed at the bottom of the top plate.

[0011] Further, rubber pads are symmetrically and fixedly installed on the inner wall of the horizontal groove, and the rubber pads abut against the clamping plate.

[0012] Further, the fixing assembly includes mounting brackets symmetrically and fixedly installed at the lower part of the outer side of the cylinder. A clamp is rotatably installed inside the mounting bracket through a rotating shaft. A connecting block is fixedly installed at the bottom of the clamp. Adjacent connecting blocks are threadedly connected through bolts.

[0013] Further, the ejector rod is in contact with the push switch in the initial state.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention can achieve the interruption of the circuit system when the user stands on the carrier plate. Therefore, it will not occur that the user forgets to turn off the circuit and the driving system fails, resulting in the situation that the lower die and the upper die approach each other and pinch people, making the whole process of taking out the formed part safer;

[0016] 2. The present invention can lock the carrier plate when standing on the carrier plate, so that even if the user fails to stand firm and falls below the carrier plate and leaves the carrier plate, the carrier plate can still remain stationary. Therefore, the circuit is still disconnected at this time, and it will still not occur that the driving system fails and the lower die and the upper die approach each other and pinch people, further improving safety. Description of the drawings

[0017] Figure 1 Shows a schematic structural diagram of an injection mold for the lower trim panel of an automotive front bumper according to an embodiment of the present invention;

[0018] Figure 2 Shows a left view of the structure of the fixing component according to an embodiment of the present invention;

[0019] Figure 3 Shows the implementation of the present invention Figure 2 Schematic enlarged structure diagram at A in;

[0020] Figure 4 Shows the schematic structure of the fixing component according to an embodiment of the present invention Figure 1 ;

[0021] Figure 5 Shows the schematic structure of the fixing component according to an embodiment of the present invention Figure 2 ;

[0022] Figure 6 Shows a schematic structural diagram of the lower mold according to an embodiment of the present invention;

[0023] In the figure: 1, lower mold; 2, upper mold; 3, guide rod; 4, cylinder; 5, slide rod; 6, carrier plate; 7, ejector rod; 8, support plate; 9, push switch; 10, first spring; 11, slider; 12, fixed block; 13, vertical plate; 14, bayonet; 15, clamping plate; 16, second spring; 17, triangular block; 18, top plate; 19, third spring; 20, anti-slip block; 21, pressure rod; 22, mounting bracket; 23, clamp; 24, connecting block; 25, bolt; 26, rubber pad. Detailed implementation method

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0025] The present invention provides an injection mold for the lower trim panel of an automotive front bumper, as Figures 1 to 6 shown, including a lower mold 1, an upper mold 2 and four guide rods 3. Both the lower mold 1 and the upper mold 2 are slidably arranged on the four guide rods 3. Cylinders 4 are provided on the two lower guide rods 3. A fixing component for fixing it to the guide rod 3 is provided at the bottom of the cylinder 4. A slider 11 is slidably installed inside the cylinder 4. A slide rod 5 is fixedly installed at the top of the slider 11. A first spring 10 is fixedly installed at the bottom of the slider 11. The tops of the two slide rods 5 are jointly fixedly installed with a carrier plate 6. An ejector rod 7 is fixedly installed at the bottom of the carrier plate 6. The height of the carrier plate 6 does not affect the combination of the upper mold 2 and the lower mold 1. A support plate 8 is provided below the carrier plate 6. A push switch 9 is provided on the top of the support plate 8. The push switch 9 can open and close the circuit system that powers the lower mold 1 and the upper mold 2.

[0026] In use, power supply is carried out through a drive system not shown in the circuit system diagram for the lower die 1 and the upper die 2. The drive system is a drive system for driving the movement of the lower die and the upper die in the prior art, which is the prior art and will not be elaborated here. The drive system drives the separation of the lower die 1 and the upper die 2 after processing. When it is necessary to remove the formed part, at this time, starting from one side of the carrier plate 6 and standing on the carrier plate 6, since the carrier plate 6 is under pressure, the carrier plate 6 descends, driving the slide bar 5 and the slider 11 to descend, causing the first spring 10 to be compressed and deformed to generate a force. As the carrier plate 6 descends, the carrier plate 6 drives the ejector rod 7 to descend, pressing the push switch 9, interrupting the circuit system. And throughout the process, as long as a person is on the carrier plate 6, the circuit system will be interrupted. Therefore, it will not occur that the user forgets to turn off the circuit and the drive system fails, resulting in the lower die 1 and the upper die 2 approaching each other and clamping people, making the process of removing the formed part safer. When the user leaves the carrier plate 6, at this time, the first spring 10 releases the force, driving the slider 11, the slide bar 5 and the carrier plate 6 to rise, causing the ejector rod 7 to move away from the push switch 9, and at this time the circuit system resumes power supply.

[0027] The formed part is the lower trim panel of the front bumper of an automobile. When the staff is on the carrier plate 6, the carrier plate 6 descends to the lowest position and cannot move.

[0028] As Figure 2 and Figure 3 shown, a vertically opened opening communicating with its interior is provided on the outer side of one side cylinder body 4. A fixed block 12 is fixedly installed on one side of the slider 11. One end of the fixed block 12 extends outside the opening and is fixedly installed with a vertical plate 13. Above the cylinder body 4, a locking assembly is provided for fixing the vertical plate 13.

[0029] When the slider 11 descends, it will drive the fixed block 12 and the vertical plate 13 to descend. When the carrier plate 6 descends to the position where it cannot move, at this time, the locking assembly locks the vertical plate 13, resulting in the inability of the fixed block 12, the slider 11, the slide bar 5 and the carrier plate 6 to move, completing the locking of the carrier plate 6. When working on the carrier plate 6, even if the user fails to stand firm and falls below the carrier plate 6 and leaves the carrier plate 6, the carrier plate 6 can still remain stationary. Therefore, the circuit is still disconnected at this time, and it still will not occur that the drive system fails and the lower die 1 and the upper die 2 approach each other and clamp people, further improving safety.

[0030] As Figure 2 and Figure 3 shown, the locking assembly includes a bayonet 14 opened in the upper part of the inner side of the vertical plate 13. A horizontal groove is opened above the cylinder body 4 close to the vertical plate 13. A clamping plate 15 matched with the bayonet 14 is slidably installed in the horizontal groove. One side of the clamping plate 15 away from the vertical plate 13 is fixedly connected with the inner wall of the horizontal groove through a second spring 16. A pulling assembly is provided on the clamping plate 15 for driving it to move in a direction away from the vertical plate 13.

[0031] The vertical plate 13 descends, bringing the bayonet 14 down. The bayonet 14 moves to align with the clamping plate 15. At this time, the compressed second spring 16 releases its acting force, driving the clamping plate 15 to move towards the bayonet 14. The clamping plate 15 enters the bayonet 14, and at this time, the fixation of the vertical plate 13 is completed, making it immovable. Thus, the restriction on the fixed block 12, the slider 11, the sliding rod 5, and the carrier plate 6 is completed, fixing the carrier plate 6. When the user leaves from the other side of the carrier plate 6, at this time, the pulling component is triggered to pull the clamping plate 15 away from the bayonet 14, and at the same time, the second spring 16 is compressed to deform and generate an acting force, causing the clamping plate 15 to leave the bayonet 14. At this time, when the user leaves, the first spring 10 releases its acting force, driving the slider 11, the sliding rod 5, and the carrier plate 6 to rise, resetting the carrier plate 6.

[0032] As Figure 3 shown, when the clamping plate 15 abuts against the vertical plate 13, the second spring 16 is in a compressed state at this time.

[0033] So that when the bayonet 14 aligns with the clamping plate 15, the second spring 16 can release its acting force to drive the clamping plate 15 into the bayonet 14 at this time.

[0034] As Figure 2 and Figure 3 shown, the pulling component includes a triangular block 17 fixed to the top of the clamping plate 15. A groove is formed on one side of the top of the carrier plate 6. A top plate 18 is slidably arranged in the groove. The bottom of the top plate 18 is fixedly connected to the bottom wall of the groove through a plurality of third springs 19. Anti-slip blocks 20 are provided on the tops of both the top plate 18 and the carrier plate 6. An activity port communicating with the groove is provided at the bottom of the carrier plate 6. A pressing rod 21 cooperating with the activity port is fixedly installed at the bottom of the top plate 18. The anti-slip blocks 20 can increase the frictional force between the carrier plate 6 and the user's sole to prevent slipping. The anti-slip blocks 20 are hard rubber anti-slip blocks in the prior art.

[0035] Rubber pads 26 are symmetrically and fixedly installed on the inner wall of the transverse groove, and the rubber pads 26 abut against the clamping plate 15.

[0036] The user stands on the carrier plate 6 from the side away from the top plate 18. When the carrier plate 6 stops moving, the pressure rod 21 does not contact the triangular block 17. When the user needs to leave, the user moves in the direction close to the top plate 18. When the user steps on the top plate 18, the top plate 18 drops slightly, and the drop distance is less than 5CM. At this time, the descending top plate 18 brings the pressure rod 21 down and compresses the third spring 19 to deform it and generate a force. The pressure rod 21 contacts the inclined surface of the triangular block 17, so that the triangular block 17 is squeezed to move the card plate 15 in the direction away from the card slot 14, so that the card plate 15 leaves the card slot 14. At this time, the card plate 15 is taken out. The fixation of the bayonet 14 is cancelled, and then the user leaves the top plate 18 and the carrier plate 6. At this time, the third spring 19 releases its force to carry the top plate 18 and the pressure rod 21 upward, so that the pressure rod 21 leaves the triangular block 17. At the same time, the second spring 16 releases its force to carry the card plate 15 to move in the direction close to the bayonet 14. At the same time, the first spring 10 releases its force to carry the slider 11, the fixed block 12, the vertical plate 13, the slide bar 5, and the carrier plate 6 upward. However, due to the presence of the rubber pad 26, the card plate 15 moves slowly. Therefore, the vertical plate 13 can carry the bayonet 14 up and staggered with the card plate 15, thereby ensuring that the carrier plate 6 can smoothly rise and reset.

[0037] like Figure 2 As shown, the fixing assembly includes a mounting frame 22 symmetrically fixedly mounted on the lower outer side of the cylinder 4, a clamp 23 is rotatably mounted inside the mounting frame 22 via a rotating shaft, a connecting block 24 is fixedly mounted at the bottom of the clamp 23, adjacent connecting blocks 24 are threadedly connected via bolts 25, and the clamp 23 is located outside the guide rod 3.

[0038] The bolt 25 can be removed from the connecting block 24 by rotating forward, and then the pair of clamps 23 can be separated to cancel the fixation of the guide rod 3. After the fixation of the guide rod 3 by the pair of clamps 23 on both sides is canceled, the entire carrier plate 6 can be moved and its position can be adjusted. After the adjustment, conversely, the clamp 23 is combined with the guide rod 3, and the bolt 25 is reversed and reset to connect the adjacent connecting blocks 24, and then the adjacent clamps 23 are connected, so as to realize the fixation of the guide rod 3 and complete the fixation of the carrier plate 6.

[0039] like Figure 2 As shown, the push rod 7 is in contact with the push switch 9 in the initial state.

[0040] Working principle: when in use, the driving system (not shown in the diagram) for the lower mold 1 and the upper mold 2 is not shown in the diagram to supply power. The driving system is a driving system for driving the lower mold and the upper mold to move in the prior art. It is a prior art and will not be described in detail here. The driving system drives the lower mold 1 and the upper mold 2 to separate after the processing is completed. When the molded part needs to be removed, stand on the carrier 6 from the side of the carrier 6 away from the top plate 18. Since the carrier 6 is under pressure, the carrier 6 descends with the slide bar 5 and the slider 11, so that the first spring 10 is compressed to deform it and generate a force. As the carrier 6 descends, the carrier 6 descends with the top rod 7 to press the push switch 9, so that the circuit system is interrupted. When When the slider 11 descends, it will bring the fixed block 12 and the vertical plate 13 down, and the vertical plate 13 will bring the bayonet 14 down, and the bayonet 14 will move to align with the card plate 15. At this time, the compressed second spring 16 releases the force to bring the card plate 15 to move in the direction close to the bayonet 14, and the card plate 15 enters the bayonet 14. At this time, the vertical plate 13 is fixed and cannot move, thereby completing the restriction of the fixed block 12, the slider 11, the slide bar 5 and the carrier plate 6, so that the carrier plate 6 is fixed and the circuit is interrupted. Therefore, the user will not forget to turn off the circuit, and the drive system will not fail to cause the lower mold 1 and the upper mold 2 to get close to each other and clamp people, making the entire process of taking out the molded part safer, and by The locking means that even if the user fails to stand and falls below the carrier plate 6 and leaves the carrier plate 6, the carrier plate 6 can still be stationary. Therefore, the circuit is still disconnected at this time, and there will be no driving system failure to cause the lower mold 1 and the upper mold 2 to approach each other and clamp the person, thereby further improving safety. When the user needs to leave, the user moves toward the direction close to the top plate 18. When the user steps on the top plate 18, the top plate 18 drops slightly, and the drop distance is less than 5CM. At this time, the dropped top plate 18 drops with the pressure rod 21 and compresses the third spring 19 to deform it and generate a force. The pressure rod 21 contacts the inclined surface of the triangular block 17, so that the triangular block 17 is squeezed to bring the card plate 15 away from the card port. 14, so that the card plate 15 leaves the bayonet 14, and the fixation of the bayonet 14 is cancelled. Then the user leaves the top plate 18 and the carrier plate 6. At this time, the third spring 19 releases its force to carry the top plate 18 and the pressure rod 21 to rise, so that the pressure rod 21 leaves the triangular block 17. At the same time, the second spring 16 releases its force to carry the card plate 15 to move in the direction close to the bayonet 14. At the same time, the first spring 10 releases its force to carry the slider 11, the fixed block 12, the vertical plate 13, the slide bar 5, and the carrier plate 6 to rise. However, due to the presence of the rubber pad 26, the card plate 15 moves slowly. Therefore, the vertical plate 13 can carry the bayonet 14 to rise and stagger with the card plate 15, thereby ensuring that the carrier plate 6 can rise and reset smoothly.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An injection mold for a lower trim plate of a front bumper of an automobile, comprising a lower mold (1), an upper mold (2) and four guide rods (3), characterized in that: The lower mold (1) and the upper mold (2) are both slidably arranged on four guide rods (3), the two lower guide rods (3) are each provided with a cylinder (4), the bottom of the cylinder (4) is provided with a fixing assembly for fixing it to the guide rod (3), a slider (11) is slidably installed inside the cylinder (4), a slider (5) is fixedly installed on the top of the slider (11), a first spring (10) is fixedly installed on the bottom of the slider (11), a carrier plate (6) is fixedly installed on the top of the two sliders (5), a top rod (7) is fixedly installed on the bottom of the carrier plate (6), a support plate (8) is provided below the carrier plate (6), and a push switch (9) is provided on the top of the support plate (8), and the push switch (9) can turn on and off the circuit system that supplies power to the lower mold (1) and the upper mold (2); An opening communicating with the interior of the cylinder (4) is vertically provided on the outer side of one side, a fixing block (12) is fixedly mounted on one side of the slider (11), one end of the fixing block (12) extends outside the opening, a vertical plate (13) is fixedly mounted on one end of the fixing block (12) extending outside the opening, and a locking assembly for fixing the vertical plate (13) is provided above the cylinder (4); The locking assembly comprises a bayonet (14) provided at the upper inner side of the vertical plate (13); a transverse groove is provided above the cylinder (4) near the vertical plate (13); a clamping plate (15) cooperating with the bayonet (14) is slidably mounted in the transverse groove; a side of the clamping plate (15) away from the vertical plate (13) is fixedly connected to the inner wall of the transverse groove via a second spring (16); and a pulling assembly for driving the clamping plate (15) to move in a direction away from the vertical plate (13); When the clamping plate (15) contacts the vertical plate (13), the second spring (16) is in a compressed state; The pulling assembly comprises a triangular block (17) fixed to the top of the card plate (15); a groove is provided on one side of the top of the carrier plate (6); a top plate (18) is slidably arranged in the groove; the bottom of the top plate (18) is fixedly connected to the bottom wall of the groove via a plurality of third springs (19); anti-sliding blocks (20) are provided on the top of the top plate (18) and the carrier plate (6); a movable opening communicating with the groove is provided at the bottom of the carrier plate (6); and a pressure rod (21) cooperating with the movable opening is fixedly installed at the bottom of the top plate (18).

2. The injection mold for the lower trim plate of the front bumper of an automobile according to claim 1, characterized in that: A rubber pad (26) is symmetrically fixedly mounted on the inner wall of the transverse groove, and the rubber pad (26) contacts the clamping plate (15).

3. The injection mold for the lower trim plate of the front bumper of an automobile according to claim 2, characterized in that: The fixing assembly comprises a mounting frame (22) symmetrically fixedly mounted on the lower outer portion of the cylinder (4); a clamp (23) is rotatably mounted inside the mounting frame (22) via a rotating shaft; a connecting block (24) is fixedly mounted at the bottom of the clamp (23); adjacent connecting blocks (24) are threadedly connected via bolts (25).

4. The injection mold for the lower trim plate of the front bumper of an automobile according to claim 3, characterized in that: In the initial state, the push rod (7) is in contact with the push switch (9).

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