Spline shaft forging die of transmission shaft

Abstract

The utility model discloses a spline shaft forging die for a transmission shaft, which relates to the field of transmission shaft production and comprises a base plate, a fixing component is arranged on one side of the base plate and comprises four positioning grooves and guide rods, the four positioning grooves and the guide rods are arranged on one side of the base plate, positioning blocks are arranged in the positioning grooves, and a left die is mounted on one side of each positioning block. By arranging the fixing assembly, when the left mold and the right mold need to be installed, the positioning block on one side of the left mold can be inserted into the positioning groove so as to position the left mold, then the guide rod is sleeved with the installation disc, the installation disc is pushed so that the installation disc can move, and after the clamping plate moves into the clamping groove, the left mold and the right mold can be fixed. The movable ring can be pushed in the direction of the left mold, when the movable ring moves, the movable ring can drive the first movable plate to rotate and drive the second movable plate to rotate, the first movable plate pulls the first sliding base to move and then drives the locking block to move, the locking block is moved into the locking groove, and therefore the left mold can be locked and fixed.

Description

Technical Field

[0001] The utility model relates to the field of transmission shaft production, in particular to a spline shaft forging die for a transmission shaft. Background Art

[0002] The drive shaft is a crucial component in a vehicle's powertrain. Working with the transmission and drive axle, it transmits engine power to the wheels, generating propulsion. The drive shaft consists of a shaft tube, a telescopic sleeve, and a universal joint. The telescopic sleeve automatically adjusts for changes in the distance between the transmission and drive axle.

[0003] A spline shaft is a type of mechanical transmission. Its structure features a longitudinal keyway on the shaft's exterior, and a corresponding keyway on a rotating member that fits on the shaft, allowing it to rotate synchronously with the shaft. While rotating, the spline shaft can also slide longitudinally on the shaft. It is used in automotive power transmission systems and steering mechanisms. The rear spline shaft is a crucial component of the drive shaft and is typically produced using forging technology, requiring the use of a forging die.

[0004] According to the Chinese patent publication number CN213997657U, an energy-saving rear spline shaft forging die is disclosed. When forging the energy-saving rear spline shaft, this utility model only needs to heat the end of the rear spline shaft, then place the heated spline shaft in the mold cavity of the mold, and forge it through the forging mechanism.

[0005] Regarding the above-mentioned disclosed patent content, when installing the mold, multiple studs and screws are required to install the mold on the pad. The installation process is relatively cumbersome, and the installation of studs and screws is time-consuming and labor-intensive. It is also inconvenient to disassemble, thereby reducing the efficiency of disassembly and assembly of the mold. Utility Model Content

[0006] Based on this, the purpose of the present invention is to provide a spline shaft forging die for a transmission shaft to solve the technical problem of low efficiency in disassembly and assembly of the die.

[0007] The cam is secured to the outside of the housing with a secure coupling to the front of the housing, and the cam is secured to the outside of the housing with a secure coupling to the front of the housing, wherein the cam is secured to the outside of the housing with a secure coupling to the front of the housing.

[0008] By adopting the above technical solution, when the movable ring moves, it can drive the first movable plate to rotate and drive the second movable plate to rotate. The first movable plate pulls the first slide to move, and the second movable plate pulls the second slide to move.

[0009] Furthermore, a right mold is installed inside the mounting plate, and a mold cavity is opened inside the right mold.

[0010] By adopting the above technical solution, the right mold can be closed with the left mold, and the setting of the mold cavity facilitates the molding of the spline shaft therein.

[0011] Furthermore, a push rod is provided inside the left mold, and one end of the push rod is located inside the mold cavity.

[0012] By adopting the above technical solution, the arrangement of the ejector pin facilitates the spline shaft to be pushed out of the mold cavity, thereby facilitating the removal of the spline shaft.

[0013] Furthermore, a through hole is provided at a middle position on one side of the pad, and the through hole corresponds to the push rod.

[0014] By adopting the above technical solution, it is convenient to push the ejector rod to move through the through hole, and the ejector rod pushes the spline shaft to move, so as to push the spline shaft out of the mold cavity.

[0015] Furthermore, the locking block corresponds to the locking groove one by one, and the locking block is adapted to the locking groove.

[0016] By adopting the above technical solution, after the locking block moves into the locking groove, the left mold can be locked and limited to prevent the left mold from moving or falling.

[0017] Furthermore, the card plate is slidably connected to the second slide rod via a second slide seat, and the card plate is in an "L" shape.

[0018] By adopting the above technical solution, when the second slide seat slides on the second slide rod, it will drive the card plate to move. After the card plate is inserted into the card slot, the mounting plate can be locked and limited.

[0019] Furthermore, a sealing ring is installed at one end of the right mold, and the inner wall of the sealing ring is in contact with the outer wall of the left mold.

[0020] By adopting the above technical solution, the provision of the sealing ring can improve the sealing performance after the left mold and the right mold are closed.

[0021] Furthermore, the locking block is slidably connected to the first sliding rod via a first sliding seat.

[0022] By adopting the above technical solution, the first slide slides on the first slide rod, thereby driving the locking block to move so that the locking block moves into the locking groove, thereby limiting and fixing the left mold.

[0023] Furthermore, the mounting plate and the movable ring are both slidably connected to the guide rod.

[0024] By adopting the above technical solution, the mounting plate and the movable ring can slide on the guide rod, and the mounting plate can be easily installed.

[0025] Furthermore, a threaded hole is provided at the bottom of one of the guide rods, and a locking bolt is installed at the bottom of the movable ring.

[0026] By adopting the above technical solution, when the movable ring needs to be locked and limited, the staff can rotate the locking bolt and screw the locking bolt into the threaded hole to lock and fix the movable ring.

[0027] In summary, the present invention has the following beneficial effects:

[0028] The utility model is provided with a fixing assembly. When the left mold and the right mold need to be installed, the positioning block on one side of the left mold can be inserted into the positioning groove to position the left mold. Then the mounting plate is sleeved on the guide rod and the mounting plate is pushed to move the mounting plate. When the clamping plate moves into the inside of the clamping groove, the movable ring can be pushed toward the left mold. When the movable ring moves, it can drive the first movable plate to rotate and drive the second movable plate to rotate. The first movable plate pulls the first slide to move, and then drives the locking block to move, so that the locking block moves into the inside of the locking groove, so that the left mold can be locked. Tightly fix it, and at the same time, the second movable plate pulls the second slide to move, and then drives the card plate to move, so that the card plate moves into the deepest part of the card slot, thereby locking and fixing the mounting plate, and completing the installation of the right mold. When the locking bolt on the movable ring is aligned with the threaded hole, the locking bolt is screwed into the threaded hole to lock and fix the movable ring to prevent it from moving at will. In this way, the left mold and the right mold can be quickly installed, and there is no need to use multiple screws to fix the left mold and the right mold, and the disassembly and assembly process is simple and convenient, thereby improving the disassembly and assembly efficiency of the left mold and the right mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0031] Figure 3 This is a schematic diagram of the overall side structure of the utility model;

[0032] Figure 4 This is a schematic diagram of the installation disk structure of the utility model;

[0033] Figure 5 This is a schematic diagram of the card slot structure of the present utility model;

[0034] Figure 6 This is a schematic diagram of the top rod structure of the present utility model.

[0035] In the figure: 1. pad; 2. through hole; 3. ejector pin; 4. left mold; 5. right mold; 6. sealing ring; 7. mold cavity; 8. mounting plate; 9. fixing assembly; 901. guide rod; 902. movable ring; 903. first movable plate; 904. positioning block; 905. positioning groove; 906. locking groove; 907. locking block; 908. first slide; 909. first slide; 910. second movable plate; 911. threaded hole; 912. locking bolt; 913. second slide; 914. slot; 915. clamping plate; 916. second slide. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] The following describes an embodiment of the present invention based on its overall structure.

[0038] Example 1:

[0039] A spline shaft forging die for a transmission shaft, such as Figures 1-6 As shown, it includes a pad 1, and a fixing component 9 is provided on one side of the pad 1. The fixing component 9 includes four positioning grooves 905 and a guide rod 901 opened on one side of the pad 1. A positioning block 904 is provided inside the positioning groove 905, and a left mold 4 is installed on one side of the positioning block 904. The outer wall of the left mold 4 is provided with four locking grooves 906. The outer wall of the guide rod 901 is respectively sleeved with a movable ring 902 and a mounting plate 8. Four card slots 914 are provided on one side of the mounting plate 8. The four guide rods 901 are respectively installed with a first slide bar 909 and a second slide bar 916.

[0040] Specifically, the outer wall of the first slide bar 909 is sleeved with the first slide seat 908, and the first movable plate 903 is connected between the first slide seat 908 and the movable ring 902 through a rotating shaft, and a locking block 907 is fixed on the first slide seat 908, and the locking block 907 corresponds to the locking groove 906 one by one, and the locking block 907 is adapted to the locking groove 906. After the locking block 907 moves into the locking groove 906, the left mold 4 can be locked and limited to prevent the left mold 4 from moving or falling. The outer wall of the second slide bar 916 is sleeved with the second slide seat 913. When the movable ring 902 moves, it can drive the first movable plate 903 to rotate, and drive the second movable plate 910 to rotate. The first movable plate 903 pulls the first slide seat 908 to move, and the second movable plate 910 pulls the second slide seat 913 to move.

[0041] Specifically, a second movable plate 910 is connected between the second slide 913 and the second slide rod 916 via a rotating shaft, and a card plate 915 is installed on one side of the second slide 913. The card plate 915 is slidably connected to the second slide rod 916 through the second slide 913. The card plate 915 is in an "L" shape. When the second slide 913 slides on the second slide rod 916, it drives the card plate 915 to move. After the card plate 915 is inserted into the card slot 914, the mounting plate 8 can be locked and limited. A sealing ring 6 is installed at one end of the right mold 5. The inner wall of the sealing ring 6 fits with the outer wall of the left mold 4. The setting of the sealing ring 6 can improve the sealing of the left mold 4 and the right mold 5 after the mold is closed. The locking block 907 is slidably connected to the first slide rod 909 through the first slide seat 908. The first slide seat 908 slides on the first slide rod 909, thereby driving the locking block 907 to move so that the locking block 907 moves into the locking groove 906, thereby limiting and fixing the left mold 4.

[0042] See Figure 2-Figure 5 , the mounting plate 8 and the movable ring 902 are both slidably connected to the guide rod 901, so that the mounting plate 8 and the movable ring 902 can slide on the guide rod 901, and it is convenient to install the mounting plate 8. A threaded hole 911 is provided at the bottom of a guide rod 901, and a locking bolt 912 is installed at the bottom of the movable ring 902. When the movable ring 902 needs to be locked and limited, the staff can rotate the locking bolt 912 and screw the locking bolt 912 into the threaded hole 911 to lock and fix the movable ring 902. The right mold 5 is installed inside the mounting plate 8, and the mold cavity 7 is provided inside the right mold 5. The right mold 5 and the mounting plate 8 are detachably connected to the guide rod 901, and the right mold 5 can be molded with the left mold 4. The setting of the mold cavity 7 facilitates the molding of the spline shaft inside it. The left mold 4 is detachably connected to the pad 1 through the positioning block 904, which facilitates the disassembly of the left mold 4.

[0043] Example 2:

[0044] On the basis of the above-mentioned embodiment 1, in order to facilitate the removal of the spline shaft in the mold cavity 7, the following structure is provided.

[0045] See Figure 1 、 Figure 2 、 Figure 3 and Figure 6 A push rod 3 is provided inside the left mold 4, and one end of the push rod 3 is located inside the mold cavity 7. The setting of the push rod 3 makes it convenient to push the spline shaft out of the mold cavity 7, thereby facilitating the removal of the spline shaft. A through hole 2 is provided in the middle position of one side of the pad 1, and the through hole 2 corresponds to the push rod 3, which makes it convenient to push the push rod 3 to move through the through hole 2, and the push rod 3 pushes the spline shaft to move, so as to push the spline shaft out of the mold cavity 7.

[0046] The working principle of the present invention is as follows: first, when installing the left mold 4 and the right mold 5, the positioning block 904 on one side of the left mold 4 can be inserted into the positioning groove 905 to position the left mold 4, and then the mounting plate 8 is sleeved on the guide rod 901, and the mounting plate 8 is pushed to move the mounting plate 8. When the clamping plate 915 is moved into the clamping groove 914, the movable ring 902 can be pushed toward the left mold 4. When the movable ring 902 moves, it can drive the first movable plate 903 to rotate, and drive the second movable plate 910 to rotate. The first movable plate 903 pulls the first slide 908 to move, and then drives the locking block 90 7 moves, so that the locking block 907 moves into the locking groove 906, thereby locking and fixing the left mold 4. At the same time, the second movable plate 910 pulls the second slide 913 to move, and then drives the clamping plate 915 to move, so that the clamping plate 915 moves into the deepest part of the clamping groove 914, thereby locking and fixing the mounting plate 8 and completing the installation of the right mold 5. When the locking bolt 912 on the movable ring 902 is aligned with the threaded hole 911, the locking bolt 912 is screwed into the threaded hole 911 to lock and fix the movable ring 902 to prevent it from moving at will. After the mold is closed, the spline shaft can be forged;

[0047] When forging the rear spline shaft, it is only necessary to heat the end of the rear spline shaft, and then place the heated rear spline shaft in the die cavity 7. The heated part of the rear spline shaft is located at the left end of the die, and it can be forged by the forging mechanism. After the forging is completed, force is applied to the push rod 3 through the through hole 2, and the push rod 3 pushes the rear spline shaft out. Because the right end of the rear spline shaft is not heated, when force is applied to it by the push rod 3, it will not cause deformation of the right end of the rear spline shaft.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A spline shaft forging die for a transmission shaft, comprising a backing plate (1), characterized in that: A fixing assembly (9) is provided on one side of the pad (1), and the fixing assembly (9) includes four positioning grooves (905) and a guide rod (901) provided on one side of the pad (1), a positioning block (904) is provided inside the positioning groove (905), and a left mold (4) is installed on one side of the positioning block (904), and four locking grooves (906) are provided on the outer wall of the left mold (4), and a movable ring (902) and a mounting plate (8) are respectively sleeved on the outer wall of the guide rod (901), and four card slots (914) are provided on one side of the mounting plate (8). The four guide rods (901) are respectively installed A first slide bar (909) and a second slide bar (916) are provided, wherein the outer wall of the first slide bar (909) is sleeved with a first slide seat (908), and a first movable plate (903) is connected between the first slide seat (908) and the movable ring (902) via a rotating shaft, and a locking block (907) is fixed on the first slide seat (908), and the outer wall of the second slide bar (916) is sleeved with a second slide seat (913), and a second movable plate (910) is connected between the second slide seat (913) and the second slide bar (916) via a rotating shaft, and a clamping plate (915) is installed on one side of the second slide seat (913).

2. The spline shaft forging die for a transmission shaft according to claim 1, characterized in that: A right mold (5) is installed inside the installation plate (8), and a mold cavity (7) is opened inside the right mold (5).

3. The spline shaft forging die for a transmission shaft according to claim 2, characterized in that: A push rod (3) is provided inside the left mold (4), and one end of the push rod (3) is located inside the mold cavity (7).

4. The forging die for a spline shaft of a transmission shaft according to claim 3, characterized in that: A through hole (2) is provided at a middle position on one side of the pad (1), and the through hole (2) corresponds to the push rod (3).

5. The forging die for a spline shaft of a transmission shaft according to claim 1, characterized in that: The locking block (907) corresponds to the locking groove (906) one by one, and the locking block (907) is adapted to the locking groove (906).

6. The forging die for a spline shaft of a transmission shaft according to claim 1, characterized in that: The clamping plate (915) is slidably connected to the second sliding rod (916) via the second sliding seat (913), and the clamping plate (915) is in an "L" shape.

7. The forging die for a spline shaft of a transmission shaft according to claim 2, characterized in that: A sealing ring (6) is installed at one end of the right mold (5), and the inner wall of the sealing ring (6) is in contact with the outer wall of the left mold (4).

8. The forging die for a spline shaft of a transmission shaft according to claim 1, characterized in that: The locking block (907) is slidably connected to the first sliding rod (909) via the first sliding seat (908).

9. The forging die for a spline shaft of a transmission shaft according to claim 1, characterized in that: The mounting plate (8) and the movable ring (902) are both slidably connected to the guide rod (901).

10. The forging die for a spline shaft of a transmission shaft according to claim 1, characterized in that: A threaded hole (911) is provided at the bottom of the guide rod (901), and a locking bolt (912) is installed at the bottom of the movable ring (902).

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