Die for lower extension piece of front bumper

Abstract

The utility model relates to the field of automobile production dies, in particular to a front bumper lower extension piece die which comprises a lower die, an upper die is arranged above the lower die, transmission seats are arranged on the two sides of the bottom face of the upper die, the bottom ends of the transmission seats extend to the inner side of the lower die, and a rotary knob is arranged at the front end of the lower die. A third transmission rod is arranged at one end of the knob and located on the inner side of the lower mold, a first transmission rod is arranged at one end of the third transmission rod, and second transmission rods are arranged on the two sides of the first transmission rod; by rotating the knob, the upper mold and the lower mold are separated, in the separation process of the upper mold, the upper mold drives the first lead screw to rotate through the transmission seat and the second transmission gear, the first lead screw enables the ejector block to move in the rotating process, the ejector block collides with the contact block at the bottom end of the movable plate in the process of being located, and therefore the upper mold and the lower mold are separated. And therefore, the movable plate moves up and down on the inner side of the lower mold, and the extension piece on the inner side of the lower mold is conveniently demolded and taken out.

Description

Technical Field

[0001] This utility model relates to the field of automotive production mold technology, and in particular to a mold for the lower extension of the front bumper. Background Technology

[0002] Besides the rigid support structure and functional components such as the engine, the front of a car also features a front bumper to enclose the front of the car and the bumper. The front bumper is a shell that, in addition to its protective function, also has a certain decorative function. In the event of a collision between a car and a pedestrian, the front bumper is the point of contact, and its rounded surface can reduce the injury to the pedestrian. Therefore, the front bumper is an indispensable part of a car. The front bumper is generally made by injection molding. The front bumper is pressure cast and cooled in a mold with upper and lower molds. The front bumper component is large and has many detailed structures.

[0003] According to existing patent CN210586682U, an adjustable-size automotive parts mold includes a body. A support frame is fixedly connected to the top of the body. A hydraulic cylinder is bolted to the middle of the top of the support frame. The telescopic rod of the hydraulic cylinder passes through the top of the support frame and extends to the inner side of the support frame. A frame is fixedly connected to the end of the telescopic rod. Two vertical lead screws are provided on the inner side of the frame. The bottom ends of both vertical lead screws are movably mounted on the bottom inner side of the frame via bearing bases. The top of the frame is open. Two through holes are provided, and the top ends of the two vertical lead screws respectively pass through the corresponding through holes and extend to the outside of the machine frame. A rotating handle is fixedly connected between the top ends of the two vertical lead screws. Ball nuts are threaded onto both vertical lead screws, and a transverse connecting plate is fixedly connected between the two ball nuts. Two movable through holes are provided at the bottom of the machine frame, and a moving mold housing is fixedly connected to the bottom of the machine frame. An annular sealing groove is provided on the inner side of the moving mold housing, and an adjusting mold is provided on the inner side of the moving mold housing. A contact mold is fixedly connected to the bottom of the mold. A sealing ring is fixedly sleeved on the annular outer wall of the adjusting mold. Two vertical movable rods are fixedly connected to the lower surface of the transverse connecting plate. One bottom end of each of the two vertical movable rods passes through a corresponding movable through hole and extends to the inner side of the moving mold housing. The bottom ends of the two vertical movable rods are fixedly connected to the top of the adjusting mold. A fixed mold adapted to the adjusting mold is fixedly installed at the middle of the top of the machine body. The machine frame, vertical lead screw, ball nut, transverse connecting plate, vertical movable rod, moving mold housing, and adjusting mold cooperate with each other. When the processing size of the automotive parts mold needs to be adjusted during use, the two rotating handles are rotated simultaneously and synchronously. The rotating handles drive the corresponding vertical lead screw to rotate, which drives the ball nut of the vertical lead screw to move the transverse connecting plate. The transverse connecting plate drives the adjusting mold to move inside the moving mold housing through the two vertical movable rods, thereby changing the processing size of the automotive parts mold. This changes the traditional method of changing different mold models and greatly reduces the processing cost of automotive parts.

[0004] Therefore, when using the existing front bumper lower extension mold, since the mold is mostly placed horizontally, the object is formed with a high degree of fit with the lower mold under the action of gravity. So when demolding, after the upper mold is removed, a lot of effort is still required to peel the formed object off the lower mold, resulting in low production efficiency. Utility Model Content

[0005] To overcome the problem that existing front bumper lower extension molds are often horizontally placed, resulting in a high degree of adhesion between the molded part and the lower mold under gravity, a lot of effort is still required to peel the molded part off the lower mold after the upper mold is removed during demolding, leading to low production efficiency.

[0006] The technical solution of this utility model is as follows: a front bumper lower extension mold, including a lower mold, an upper mold above the lower mold, transmission seats on both sides of the bottom surface of the upper mold, the bottom end of the transmission seats extending to the inner side of the lower mold, a knob at the front end of the lower mold, a third transmission rod at one end of the knob located inside the lower mold, a first transmission rod at one end of the third transmission rod, a second transmission rod on both sides of the first transmission rod, a first transmission gear at one end of the second transmission rod located on one side of the transmission seat, a second transmission gear on the other side of the transmission seat located on the inner wall of the lower mold, a first lead screw at one side of the second transmission gear located inside the lower mold, a movable plate above the first lead screw located on the inner wall, top blocks at both ends of the first lead screw, and a contact block at the bottom end of the movable plate on the opposite side of the top block and the movable plate.

[0007] Preferably, the upper mold and the lower mold are separated by rotating the knob. During the separation process, the upper mold drives the first lead screw to rotate through the transmission seat and the second transmission gear. During the rotation of the first lead screw, the top block is displaced. During the displacement process, the top block collides with the contact block at the bottom of the movable plate, thereby causing the movable plate to move up and down inside the lower mold, which facilitates the demolding and removal of the extension part inside the lower mold.

[0008] Preferably, guide rods are provided at all four ends of the top surface of the lower mold, with the top of the guide rods extending through the upper mold to the top of the upper mold, and the lower mold and the upper mold are connected by the guide rods.

[0009] Preferably, the knob and the third transmission rod are integrated into one structure. Both ends of the first transmission rod and the intersection of the third and second transmission rods with the first transmission rod are provided with bevel gears. The first transmission rod is connected to the third and second transmission rods through the bevel gears.

[0010] Preferably, the upper mold and the transmission seat are an integral structure, and toothed blocks are provided on both sides of the transmission seat. The transmission seat meshes with the first transmission gear and the second transmission gear respectively through the toothed blocks.

[0011] Preferably, a bevel gear is provided at one end of the second transmission gear and at the intersection of the first lead screw and the second transmission gear, and the second transmission gear and the first lead screw are connected by bevel gear transmission.

[0012] Preferably, the first lead screw is a double-threaded lead screw, and the threads at both ends of the first lead screw are symmetrical about the first lead screw as the center. The first lead screw meshes with the two top blocks. Both ends of the top blocks and both ends of the contact blocks are inclined surfaces, and the top blocks and contact blocks are in contact through the inclined surfaces.

[0013] Preferably, both ends of the movable plate are provided with connecting grooves on the inner side of the lower mold, and both ends of the movable plate extend to the inner side of the movable groove. A connecting spring is provided on the inner wall of the movable groove below the movable plate, and the movable plate is movably connected to the lower mold through the connecting spring.

[0014] The beneficial effects of this utility model are:

[0015] The front bumper lower extension mold separates the upper and lower molds by rotating a knob. During the lifting and lowering of the upper mold, the upper mold drives the second transmission gear to rotate through the transmission seat. The second transmission gear meshes with the first lead screw, and top blocks are provided on both sides of the first lead screw. Thus, the upper mold drives the first lead screw to rotate through the transmission seat and the second transmission gear. During the rotation of the first lead screw, the top blocks are displaced. During the positioning process, the top blocks collide with the contact block at the bottom of the movable plate, thereby causing the movable plate to move up and down inside the lower mold, which facilitates the demolding and removal of the extension inside the lower mold. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0017] Figure 2 The diagram shown is a structural schematic of the lower mold of this utility model;

[0018] Figure 3 The diagram shown is a structural schematic of the knob of this utility model;

[0019] Figure 4 The diagram shown is a structural schematic of the first lead screw of this utility model;

[0020] Figure 5 The diagram shown is a structural schematic of the movable plate of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Guide rod; 4. Transmission seat; 5. Knob; 6. First transmission rod; 7. Second transmission rod; 8. First transmission gear; 9. Gear block; 10. Third transmission rod; 11. Movable plate; 12. Contact block; 13. Second transmission gear; 14. Top block; 15. Connecting spring; 16. First lead screw. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a front bumper lower extension mold, including a lower mold 1, an upper mold 2 above the lower mold 1, transmission seats 4 on both sides of the bottom surface of the upper mold 2, the bottom end of the transmission seats 4 extending to the inner side of the lower mold 1, a knob 5 at the front end of the lower mold 1, a third transmission rod 10 located on the inner side of the lower mold 1 at one end of the knob 5, a first transmission rod 6 located at one end of the third transmission rod 10, and second transmission rods 7 on both sides of the first transmission rod 6. A first transmission gear 8 is located on one side of the transmission seat 4 at one end of the second transmission rod 7, and a first transmission gear 8 is located on the other side of the transmission seat 4. The inner wall of the lower mold 1 is provided with a second transmission gear 13. A first lead screw 16 is provided on one side of the second transmission gear 13 located inside the lower mold 1. A movable plate 11 is provided on the inner wall above the first lead screw 16. A top block 14 is provided at both ends of the first lead screw 16. A contact block 12 is provided on the opposite side of the top block 14 and the movable plate 11 at the bottom end of the movable plate 11. Guide rods 3 are provided at all four ends of the top surface of the lower mold 1. The top of the guide rod 3 passes through the upper mold 2 and extends to the top of the upper mold 2. The lower mold 1 and the upper mold 2 are connected by the guide rods 3, which facilitates the connection between the lower mold 1 and the upper mold 2.

[0024] Please see Figures 2-3 In this embodiment, the knob 5 and the third transmission rod 10 are an integral structure. Both ends of the first transmission rod 6 and the intersection of the third transmission rod 10 and the second transmission rod 7 with the first transmission rod 6 are provided with bevel gears. The first transmission rod 6 is connected to the third transmission rod 10 and the second transmission rod 7 through the bevel gears. The upper mold 2 and the transmission seat 4 are an integral structure. Both sides of the transmission seat 4 are provided with tooth blocks 9. The transmission seat 4 meshes with the first transmission gear 8 and the second transmission gear 13 through the tooth blocks 9 respectively. Then, by rotating the knob 5, the first transmission gear 8 at one end of the second transmission rod 7 drives the upper mold 2 to move up and down inside the lower mold 1 through the cooperation between the third transmission rod 10, the first transmission rod 6 and the second transmission rod 7, so that the upper mold 2 and the lower mold 1 can be separated.

[0025] Please see Figures 4-5A bevel gear is provided at one end of the second transmission gear 13 and at the intersection of the first lead screw 16 and the second transmission gear 13. The second transmission gear 13 and the first lead screw 16 are connected by bevel gear transmission. The first lead screw 16 is a double-threaded lead screw. The threads at both ends of the first lead screw 16 are symmetrical about the first lead screw 16. The first lead screw 16 meshes with the two top blocks 14. Both ends of the top blocks 14 and both ends of the contact blocks 12 are inclined surfaces. The top blocks 14 and the contact blocks 12 are fitted together by the inclined surfaces. Both ends of the movable plate 11 are provided with connecting grooves on the inner side of the lower mold 1. Both ends of the movable plate 11 extend to the inner side of the movable groove. A connecting spring is provided below the movable plate 11 on the inner wall of the movable groove. 15. The movable plate 11 is movably connected to the lower mold 1 via the connecting spring 15. During the lifting and lowering of the upper mold 2, the upper mold 2 drives the second transmission gear 13 to rotate via the transmission seat 4. The second transmission gear 13 meshes with the first lead screw 16, and top blocks 14 are provided on both sides of the first lead screw 16. Thus, the upper mold 2 drives the first lead screw 16 to rotate via the transmission seat 4 and the second transmission gear 13. During the rotation of the first lead screw 16, the top blocks 14 are displaced. During the positioning process, the top blocks 14 collide with the contact block 12 at the bottom of the movable plate 11, thereby causing the movable plate 11 to move up and down inside the lower mold 1, which facilitates the demolding and removal of the extension part inside the lower mold 1.

[0026] During operation, when the lower mold 1 and upper mold 2 are closed, the power is turned on and the device is started. Injection molding is performed through the lower mold 1 and upper mold 2. After injection molding is completed, by rotating the knob 5, the interaction between the third transmission rod 10 and the first transmission rod 6 and the second transmission rod 7 causes the first transmission gear 8 at one end of the second transmission rod 7 to drive the upper mold 2 to move up and down inside the lower mold 1, which facilitates the separation of the upper mold 2 and the lower mold 1. During the lifting and lowering process of the upper mold 2, the upper mold 2 drives the second transmission gear 13 to rotate through the transmission seat 4. The second transmission gear 13 meshes with the first lead screw 16, and top blocks 14 are provided on both sides of the first lead screw 16. Thus, the upper mold 2 drives the first lead screw 16 to rotate through the transmission seat 4 and the second transmission gear 13. During the rotation of the first lead screw 16, the top blocks 14 are displaced. During the positioning process, the top blocks 14 collide with the contact block 12 at the bottom of the movable plate 11, thereby causing the movable plate 11 to move up and down inside the lower mold 1, which facilitates the demolding and removal of the extension inside the lower mold 1.

[0027] Through the above steps, by rotating the knob 5, the upper mold 2 and the lower mold 1 are separated. During the separation process, the upper mold 2 drives the first lead screw 16 to rotate through the transmission seat 4 and the second transmission gear 13. During the rotation of the first lead screw 16, the top block 14 is displaced. During the positioning process, the top block 14 collides with the contact block 12 at the bottom of the movable plate 11, thereby causing the movable plate 11 to move up and down inside the lower mold 1, which facilitates the demolding and removal of the extension part inside the lower mold 1. This solves the problem that in the existing front lower extension part mold, when the mold is mostly placed horizontally, the object is highly attached to the lower mold after molding under the action of gravity. Therefore, when demolding, after the upper mold is removed, a lot of effort is still required to peel the molded object off the lower mold, resulting in low production efficiency.

Claims

1. A mold for a front lower extension, comprising a lower mold (1); characterized in that: The upper mold (2) is arranged above the lower mold (1), the two sides of the bottom surface of the upper mold (2) are provided with transmission seats (4), the bottom end of the transmission seat (4) extends to the inner side of the lower mold (1), the front end of the lower mold (1) is provided with a knob (5), one end of the knob (5) is located in the inner side of the lower mold (1) and is provided with a third transmission rod (10), one end of the third transmission rod (10) is provided with a first transmission rod (6), the two sides of the first transmission rod (6) are provided with a second transmission rod (7), one end of the second transmission rod (7) is provided with a first transmission gear (8) on one side of the transmission seat (4), the other side of the transmission seat (4) is provided with a second transmission gear (13) on the inner wall of the lower mold (1), one side of the second transmission gear (13) is provided with a first lead screw (16) on the inner side of the lower mold (1), the upper side of the first lead screw (16) is provided with a movable plate (11) on the inner wall, the two ends of the first lead screw (16) are provided with top blocks (14), and the opposite surfaces of the top blocks (14) and the movable plate (11) are provided with contact blocks (12) on the bottom end of the movable plate (11).

2. The front protection lower extension piece mold according to claim 1, characterized by: The top surface of the lower mold (1) is provided with guide rods (3) at four ends, the top end of the guide rod (3) extends through the upper mold (2) and extends above the upper mold (2), and the lower mold (1) and the upper mold (2) are connected through the guide rod (3).

3. The front protection lower extension piece mold according to claim 1, characterized by: The knob (5) and the third transmission rod (10) are an integral structure, the two ends of the first transmission rod (6) and the intersection of the third transmission rod (10) and the second transmission rod (7) and the first transmission rod (6) are provided with bevel gears, and the first transmission rod (6) is in transmission connection with the third transmission rod (10) and the second transmission rod (7) through the bevel gears.

4. The front protection lower extension piece mold according to claim 1, characterized by: The upper mold (2) and the transmission seat (4) are an integral structure, the two sides of the transmission seat (4) are provided with tooth blocks (9), and the transmission seat (4) is in meshing connection with the first transmission gear (8) and the second transmission gear (13) through the tooth blocks (9).

5. The front protection lower extension piece mold according to claim 1, characterized by: The intersection of the second transmission gear (13) and the first lead screw (16) and the first lead screw (16) are provided with bevel gears, and the second transmission gear (13) and the first lead screw (16) are in transmission connection through the bevel gears.

6. The front protection lower extension piece mold according to claim 1, characterized by: The first lead screw (16) is a double-thread screw rod, the threads at the two ends of the first lead screw (16) are symmetrical about the first lead screw (16), the first lead screw (16) is in meshing connection with the two top blocks (14), the two ends of the top block (14) and the two ends of the contact block (12) are inclined surfaces, and the top block (14) and the contact block (12) are attached through the inclined surfaces.

7. The front protection lower extension piece mold according to claim 1, characterized by: The two ends of the movable plate (11) are provided with connecting grooves in the inner side of the lower mold (1), the two ends of the movable plate (11) extend to the inner side of the movable groove, the lower side of the movable plate (11) is provided with a connecting spring (15) on the inner wall of the movable groove, and the movable plate (11) is in movable connection with the lower mold (1) through the connecting spring (15).

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