Nitrogen cylinder for rear longitudinal beam extension cover plate transfer die

Abstract

The utility model relates to the technical field of automobile rear longitudinal beam production, and discloses a nitrogen cylinder for a rear longitudinal beam extension cover plate transfer die, which comprises an upper die holder and a lower die holder. The nitrogen cylinder is used for reducing impact and vibration of the upper die holder and the lower die holder in high-speed movement and helping the upper die holder to quickly return to an initial position; when the upper die base and the lower die base are closed, the guide rod stretches into the mounting cavity formed in the lower die base and then makes contact with the top face of the nitrogen cylinder, and when the upper die base is ejected upwards through the nitrogen cylinder to open the die, the guide rod is still located in the mounting cavity. No matter whether the die is closed or opened, the guide rod moves in the mounting cavity of the lower die holder all the time, the stability of the upper die holder in the stamping process is ensured, the dimensional accuracy and consistency of stamped parts are improved, the nitrogen cylinder jacks the guide rod upwards when the die is opened, so that the upper die holder can be smoothly separated from the lower die holder, and the die opening process is simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile rear longitudinal beam production, and particularly relates to a nitrogen cylinder for a transfer die of a rear longitudinal beam extension cover plate. Background Art

[0002] Nitrogen cylinders are usually used to provide rapid and precise force and displacement to achieve various stamping operations. In the production of automobile dies, such as the transfer die of rear longitudinal beam components, on the transfer die of the rear longitudinal beam extension plate cover plate, the nitrogen cylinder can be quickly released and contracted, so as to precisely control the movement of the cover plate, which is crucial for ensuring the accuracy of the die and the quality of the product. The role of the nitrogen cylinder on the transfer die of the rear longitudinal beam extension plate cover plate is to provide power and precise control to assist in completing stamping forming and assembly operations.

[0003] In the traditional technology, the cooperation between the die and the nitrogen cylinder usually relies on fixing screws to install the nitrogen cylinder on the die. The nitrogen cylinder is in direct contact with the die. During mold opening and closing, there may be direct friction and collision, resulting in easy damage to the components of the nitrogen cylinder and the die, increasing the maintenance and replacement costs, and reducing the service life of the die. Due to the inaccurate and unstable cooperation between the die and the nitrogen cylinder in the traditional technology, the efficiency of mold opening and closing is usually low. During high-speed movement, the die is prone to deviation or swing, resulting in low production efficiency. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the existing technology, the utility model provides a nitrogen cylinder for a transfer die of a rear longitudinal beam extension cover plate.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A nitrogen cylinder for a transfer die of a rear longitudinal beam extension cover plate, comprising an upper die base and a lower die base. Nitrogen cylinders are installed at the four corners of the lower die base to reduce the impact and vibration of the upper die base and the lower die base during high-speed movement in the stamping operation of the upper die base and the lower die base, and to help the upper die base quickly return to the starting position.

[0007] Guide rods for cooperating with the nitrogen cylinder to abut and contact are provided at the four corners of the bottom of the upper die base. When the upper die base and the lower die base are closed to stamp the rear longitudinal beam extension cover plate, the guide rods extend into the installation chamber opened in the lower die base and contact the top surface of the nitrogen cylinder. When the upper die base is pushed up by the nitrogen cylinder to open the mold, the guide rods are still located in the installation chamber.

[0008] Regardless of whether the mold is closing or opening, the guide rod always moves in the installation chamber of the lower mold base, ensuring the stability of the upper mold base during the stamping process, reducing deviations caused by vibration and impact, and improving the dimensional accuracy and consistency of the stamped parts. Since the guide rod will not separate from the installation chamber of the lower mold base when the mold is opened, the wear between the mold components is reduced and the service life of the mold is extended. The nitrogen cylinder pushes the guide rod upward when the mold is opened, so that the upper mold base can be smoothly separated from the lower mold base, simplifying the mold opening process and improving production efficiency.

[0009] Preferably, the upper die base is provided with upper lifting rings at four corners, and the lower die base is provided with lower lifting rings at four corners. The design of the lifting rings makes it easy to carry and move the die, reducing the difficulty and intensity of manual handling.

[0010] Preferably, the nitrogen cylinder comprises a foot, a cylinder body arranged on the foot, and a piston rod arranged on the cylinder body. The foot is fixed in a mounting groove opened at the bottom of the lower die base by bolts. The cylinder body and the piston rod are both located in an installation chamber opened in the lower die base. After the guide rod is extended into the installation chamber opened in the lower die base, it contacts the top surface of the piston rod of the nitrogen cylinder.

[0011] Preferably, the lower die base is provided with a through hole for the guide rod to penetrate and communicate with the installation chamber, and a guide sleeve for the guide rod to slide is provided in the through hole. The design of the guide sleeve can better guide the guide rod to slide in the through hole, thereby improving the guiding effect.

[0012] Preferably, U-shaped guide grooves are provided on both sides of the lower die base and between the two nitrogen cylinders, and U-shaped guide blocks extending into the U-shaped guide grooves are provided on both sides of the upper die base, and guide slide plates are threadedly connected with bolts on the surfaces of the U-shaped guide blocks that cooperate with the U-shaped guide grooves for sliding contact. The design of the U-shaped guide grooves and guide blocks can provide more stable guidance, ensuring that the upper die base moves along a predetermined track during movement.

[0013] Preferably, the top four corners of the lower die seat are provided with pads located on both sides of the U-shaped guide groove. The pads are used to limit the upper die seat when the upper die seat moves downward.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are:

[0015] The nitrogen cylinder for the rear longitudinal beam extension cover transfer mold mainly uses the nitrogen cylinder to provide power, and ensures the precise alignment of the upper and lower mold bases through the guide rod and guide sleeve, and increases the stability of the mold movement through the U-shaped guide groove and guide block. The nitrogen cylinder is used as a power source to drive the upper mold base to move upward to open the mold, and quickly return to the starting position when closing the mold. The piston rod of the nitrogen cylinder supports the guide rod, and transmits the force to the upper mold base through the guide rod.

[0016] The guide rod is located at the bottom of the upper die base and is used to contact the top surface of the nitrogen cylinder on the lower die base during mold closing to ensure the alignment accuracy of the upper and lower die bases during high-speed movement. The guide sleeve is located in the perforation of the lower die base. It cooperates with the guide rod to guide the sliding of the guide rod in the perforation, reduce friction, and ensure the stable movement of the upper die base.

[0017] U-shaped guide grooves are located on both sides of the lower die base, and U-shaped guide blocks are provided on both sides of the upper die base. These guide blocks extend into the U-shaped guide grooves and are threadedly connected through guide sliding plates, enabling the upper die base to move stably along a predetermined track during movement, effectively reducing the offset and swing of the mold during use.

[0018] Lifting rings are respectively provided at the four corners of the upper die base and the lower die base, facilitating the handling and installation of the mold, reducing the difficulty and intensity of manual handling, and improving work efficiency. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the first perspective of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the second perspective of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the nitrogen cylinder installed on the lower die base of the present utility model.

[0022] Figure 4 It is a schematic structural diagram of the lower die base of the present utility model;

[0023] Figure 5 For the present utility model Figure 1 It is a schematic structural diagram after the lower die base in the middle is removed.

[0024] In the figure: 1. Upper die base; 2. Lower die base; 3. Nitrogen cylinder; 31. Pad foot; 32. Cylinder body; 33. Piston rod; 4. Guide rod; 5. Installation chamber; 6. Upper lifting ring; 7. Lower lifting ring; 8. Installation groove; 9. Perforation; 10. Guide sleeve; 11. U-shaped guide groove; 12. U-shaped guide block; 13. Guide sliding plate; 14. Spacer block. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] The following will further elaborate on this application in conjunction with the attached Figures 1-5 drawings for a more detailed description.

[0027] The embodiment of the present application discloses a nitrogen cylinder for a rear longitudinal beam extension cover transfer die, comprising an upper die base 1 and a lower die base 2, wherein the four corners of the lower die base 2 are provided with nitrogen cylinders 3 for reducing the impact and vibration of the upper die base 1 and the lower die base 2 in high-speed motion and helping the upper die base 1 to quickly return to the starting position during the stamping operation of the upper die base 1 and the lower die base 2;

[0028] The four corners of the bottom of the upper die base 1 are provided with guide rods 4 that cooperate with the nitrogen cylinder 3 to contact the top. When the upper die base 1 and the lower die base 2 are combined to stamp the rear longitudinal beam extension cover plate, the guide rods 4 extend into the installation chamber 5 opened in the lower die base 2 and contact the top surface of the nitrogen cylinder 3. When the upper die base 1 is pushed up and the mold is opened by the nitrogen cylinder 3, the guide rods 4 are still located in the installation chamber 5.

[0029] When the upper die base 1 and the lower die base 2 are molded together, the guide rod 4 on the upper die base 1 extends into the installation chamber 5 of the lower die base 2 and contacts the top surface of the nitrogen cylinder 3, so that the mold cores on the upper die base 1 and the lower die base 2 can be completely fitted when the molds are closed, and the rear longitudinal beam extension cover plate can be stamped more stably to ensure the integrity of its shape. In addition, when the nitrogen cylinder 3 pushes the upper die base 1 upward, it pushes the guide rod 4 upward. After the push, the guide rod 4 will not leave the installation chamber of the lower die base 2, and will still be in the installation chamber 5 and the lower die base 2. Therefore, regardless of Whether closing the mold or opening the mold, the guide rod 4 always moves in the installation chamber 5 of the lower mold base 2, ensuring the stability of the upper mold base 1 during the stamping process, reducing the deviation caused by vibration and impact, and improving the dimensional accuracy and consistency of the stamped parts. Since the guide rod 4 will not be separated from the installation chamber of the lower mold base 2 when the mold is opened, the wear between the mold components is reduced and the service life of the mold is extended. The nitrogen cylinder 3 pushes the guide rod 4 upward when the mold is opened, so that the upper mold base 1 can be smoothly separated from the lower mold base 2, which simplifies the mold opening process and improves production efficiency.

[0030] Since the guide rod 4 always moves in the installation chamber 5, the external force or collision that the guide rod 4 may encounter during the mold opening process is avoided, thereby reducing the risk of damage to the guide rod 4. The stable mold closing and mold opening process helps to ensure the quality of the stamping and avoid stamping defects caused by mold instability, such as deformation, burrs, etc.

[0031] Due to the existence of the guide rod 4, the upper die holder 1 and the lower die holder 2 can maintain relative stability during high-speed movement, reducing impact and vibration, thereby improving the stamping accuracy. The contact between the top surface of the nitrogen cylinder 3 and the guide rod 4 can reduce the direct friction between the upper die holder 1 and the lower die holder 2, extend the service life of the die, reduce the frequency of die maintenance and replacement. The design of the nitrogen cylinder 3 can help the upper die holder 1 quickly return to the starting position, shorten the production cycle, and improve production efficiency. Through the cooperation of the upper die holder 1 and the lower die holder 2, as well as the assistance of the nitrogen cylinder 3 and the guide rod 4, the rear longitudinal beam extension cover plate can be stamped more stably, ensuring the integrity of its shape.

[0032] Upper lifting rings 6 are provided at the four corners of the upper die holder 1; lower lifting rings 7 are provided at the four corners of the lower die holder 2.

[0033] Through the design of the lifting rings, the die can be conveniently transported and moved, reducing the difficulty and intensity of manual handling. When the die needs to be installed or disassembled, it can be quickly and conveniently completed through the lifting rings, improving work efficiency. The design of the lifting rings makes the maintenance and upkeep of the die more convenient. For example, the die can be easily lifted from the workbench for cleaning or repair.

[0034] The nitrogen cylinder 3 includes a foot pad 31, a cylinder body 32 provided on the foot pad 31, and a piston rod 33 provided on the cylinder body 32. The foot pad 31 is fixed in the installation groove 8 opened at the bottom of the lower die holder 2 by bolts, and both the cylinder body 32 and the piston rod 33 are located in the installation chamber 5 opened in the lower die holder 2.

[0035] This design enables the nitrogen cylinder 3 to be compactly placed inside the die, saving space and improving the utilization rate of the production line. By fixing the foot pad 31 in the installation groove 8 opened at the bottom of the lower die holder 2 with bolts, this design makes the installation of the nitrogen cylinder 3 more convenient and also facilitates future maintenance and repair. Since both the cylinder body 32 and the piston rod 33 are located in the installation chamber 5 opened in the lower die holder 2, the influence of the external environment on the nitrogen cylinder 3 is reduced, improving the stability and accuracy of stamping.

[0036] Perforations 9 that are adapted for the guide rod 4 to penetrate and communicate with the installation chamber are opened on the lower die holder 2, and guide sleeves 10 that are adapted for guiding the sliding of the guide rod 4 are provided in the perforations 9.

[0037] The design of the guide sleeve 10 can better guide the sliding of the guide rod 4 in the perforation 9, improving the guiding effect, helping to maintain the relative stability between the upper die holder 1 and the lower die holder 2, reducing impact and vibration, and improving stamping accuracy. The cooperative sliding of the guide sleeve 10 and the guide rod 4 can reduce the direct friction between the guide rod 4 and the lower die holder 2, extend the service life of the die, and reduce the frequency of die maintenance and replacement.

[0038] On both sides of the lower die base 2 and between two nitrogen cylinders 3, there are U-shaped guide grooves 11. On both sides of the upper die base 1, there are U-shaped guide blocks 12 extending into the U-shaped guide grooves 11. On the surfaces of the U-shaped guide blocks 12 and the U-shaped guide grooves 11 that are in sliding contact with each other, there are guide sliding plates 13 connected by bolts in a threaded manner.

[0039] The design of the U-shaped guide grooves 11 and the guide blocks can provide more stable guidance, ensuring that the upper die base 1 moves along a predetermined track during the movement process, effectively reducing the offset and swing of the die during use, and improving the stamping accuracy.

[0040] Through the connection of the guide sliding plates 13, the U-shaped guide blocks 12 and the U-shaped guide grooves 11 cooperate to slide, reducing the direct friction between metals, extending the service life of the guiding components, reducing the maintenance cost. The design of the connecting bolts of the guide sliding plates 13 facilitates the disassembly and replacement of parts, making the maintenance and servicing more convenient and fast.

[0041] The structural design of the U-shaped guide grooves 11 and the guide blocks makes the upper die base 1 more stable when moving along the guiding track, avoiding the unstable phenomenon caused by vibration and impact, and improving the quality and stability of the stamped parts.

[0042] At the four corners of the top of the lower die base 2, there are cushion blocks 14 located on both sides of the U-shaped guide grooves 11. The cushion blocks 14 are used to limit the upper die base 1 when the upper die base 1 descends.

[0043] For this nitrogen cylinder used in the transfer die for the rear longitudinal beam extension cover plate, when the die is closed, the nitrogen cylinder 3 compresses, and the guide rod 4 slides downward in the lower die base 2 through the guide sleeve 10 until the die core is completely fitted. After the stamping is completed, when the die is opened, the piston rod 33 pushes the guide rod 4 upward, and the upper die base 1 moves upward along the track of the guide block and the guide groove, so as to smoothly disengage from the lower die base 2. The upper die base 1 returns to the starting position smoothly under the guidance of the guide rod 4 and the guide sleeve 10, preparing for the next stamping.

[0044] By using the nitrogen cylinder 3 and the guide rod 4, the alignment accuracy between the upper die base 1 and the lower die base 2 is improved, making the stamping operation more stable, reducing the deviation caused by vibration and impact. The design of the guide rod 4 avoids direct friction, reduces the wear between the die components, thereby extending the service life of the die. The stable die closing and opening processes contribute to ensuring the quality of the stamped parts. The design of the nitrogen cylinder 3 can help the upper die base 1 quickly return to the starting position, shortening the production cycle and improving the production efficiency.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A nitrogen cylinder for a rear longitudinal beam extension cover transfer die, comprising an upper die base (1) and a lower die base (2), characterized in that: The four corners of the lower die base (2) are provided with nitrogen cylinders (3) for reducing the impact and vibration of the upper die base (1) and the lower die base (2) during high-speed movement and for helping the upper die base (1) to quickly return to the starting position during the stamping operation of the upper die base (1) and the lower die base (2); The bottom four corners of the upper die seat (1) are provided with guide rods (4) that cooperate with the nitrogen cylinder (3) to abut against the top. When the upper die seat (1) and the lower die seat (2) are combined to stamp the rear longitudinal beam extension cover plate, the guide rods (4) extend into the installation chamber (5) opened in the lower die seat (2) and contact the top surface of the nitrogen cylinder (3). When the upper die seat (1) is pushed up and opened by the nitrogen cylinder (3), the guide rods (4) are still located in the installation chamber (5).

2. The nitrogen cylinder for the rear longitudinal beam extension cover transfer mold according to claim 1, characterized in that: The four corners of the upper die base (1) are each provided with an upper lifting ring (6); the four corners of the lower die base (2) are each provided with a lower lifting ring (7).

3. The nitrogen cylinder for a rear longitudinal beam extension cover transfer mold according to claim 1, characterized in that: The nitrogen cylinder (3) comprises a foot (31), a cylinder body (32) arranged on the foot (31), and a piston rod (33) arranged on the cylinder body (32); the foot (31) is fixed in a mounting groove (8) provided at the bottom of the lower die base (2) by means of bolts; the cylinder body (32) and the piston rod (33) are both located in a mounting chamber (5) provided in the lower die base (2).

4. The nitrogen cylinder for the rear longitudinal beam extension cover transfer mold according to claim 3, characterized in that: The lower die seat (2) is provided with a through hole (9) for the guide rod (4) to penetrate and communicate with the installation chamber (5), and a guide sleeve (10) for guiding the sliding of the guide rod (4) is provided in the through hole (9).

5. The nitrogen cylinder for a rear longitudinal beam extension cover transfer mold according to claim 1, characterized in that: U-shaped guide grooves (11) are provided on both sides of the lower die base (2) and between the two nitrogen cylinders (3); U-shaped guide blocks (12) extending into the U-shaped guide grooves (11) are provided on both sides of the upper die base (1); guide slide plates (13) are threadedly connected to the surfaces of the U-shaped guide blocks (12) and the U-shaped guide grooves (11) in sliding contact with each other via bolts.

6. The nitrogen cylinder for the rear longitudinal beam extension cover transfer mold according to claim 5, characterized in that: The top four corners of the lower die base (2) are provided with cushion blocks (14) located on both sides of the U-shaped guide groove (11).

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