A core lower fixture structure capable of adjusting the position of a positioning pin

Abstract

The application discloses a lower core mold structure capable of adjusting the position of a positioning pin, and comprises a positioning block arranged on the top of a positioning support, wherein the positioning block is respectively provided with two positioning grooves, and an adjusting mechanism is arranged on a working platform and used for switching the penetrating position of the positioning pin on each positioning groove. The adjusting mechanism arranged on the working platform can conveniently switch the penetrating position of the positioning pin on each positioning groove, so that the manufacturing of double-drive axle housings with different sizes or shapes is adapted, and the flexibility of the lower core mold is improved.

Description

Technical Field

[0001] This invention relates to a lower core die structure, and more particularly to a lower core die structure with adjustable positioning pin position. Background Technology

[0002] The lower core die for automotive dual drive axle housings is a specialized tool used in manufacturing dual drive axle housings for automobiles. In the automotive manufacturing process, the dual drive axle housing is a crucial component connecting the two drive shafts of a vehicle, and its quality directly affects the vehicle's performance and lifespan. Therefore, a dedicated lower core die is required when manufacturing dual drive axle housings to ensure the precision and quality of the manufacturing process. The locating pin is a key component in the lower core die, its function being to ensure the positional accuracy between the lower die and the core.

[0003] The position of the locating pin in the lower core die is not adjustable, which makes the structure of the lower core die unsuitable for manufacturing dual drive axle housings of different sizes or shapes. Summary of the Invention

[0004] To address the technical problems mentioned in the background section, the present invention provides a lower core die structure with adjustable positioning pin position.

[0005] The present invention is achieved by the following technical solution: a lower core die structure with adjustable positioning pin position, wherein the lower core die positioning structure is disposed on the working platform, the working platform is supported by a positioning bracket, a positioning pin is movably disposed on the positioning bracket, the lower core die positioning structure includes a positioning block, the positioning block is disposed on the top of the positioning bracket, the positioning block has two positioning grooves respectively, and the working platform is provided with an adjustment mechanism, the adjustment mechanism being used to switch the insertion position of the positioning pin on each of the positioning grooves.

[0006] As a further improvement to the above solution, a positioning sleeve is detachably provided in the positioning groove, and the positioning sleeve has a through hole through which the positioning pin can pass.

[0007] As a further improvement to the above solution, the positioning sleeve is fixed to the top of the positioning block by a pressure plate.

[0008] As a further improvement to the above solution, when the positioning groove is not in use, a plug that completely seals the opening of the groove can be provided in the positioning groove.

[0009] As a further improvement to the above solution, the adjustment mechanism includes a slide rail horizontally disposed inside the working platform. The slide rail extends parallel to the direction of the line connecting the positioning slots. A movable plate is disposed at the bottom of the slide rail to cooperate with it. The bottom of the positioning pin is disposed on the movable plate and can move horizontally synchronously with the movable plate to move the positioning pin from one positioning slot to another. An actuating component is disposed inside the working platform. The actuating component is driven by the movement of the movable plate and can move the positioning pin axially upward to penetrate to the outside of the positioning slot at the moved position.

[0010] As a further improvement to the above solution, the working platform has a boom, on which a cylinder parallel to the slide rail is rotatably inserted. A screw is threaded into one end of the cylinder, and one end of the screw is fixed to the side wall of the moving plate.

[0011] As a further improvement to the above solution, the motion component includes a synchronous shaft that is horizontally perpendicular to the slide rail, the bottom of the positioning pin is vertically fixed to one end of the synchronous shaft, the moving plate has a first limiting groove with a V-shaped structure, the outer side of the synchronous shaft is slidably engaged in the first limiting groove, the inner side wall of the working platform has a second limiting groove, and the other end of the synchronous shaft is slidably engaged in the second limiting groove.

[0012] As a further improvement to the above solution, the second limiting groove has a horizontal section, and both ends of the horizontal section have vertical sections pointing vertically upwards.

[0013] As a further improvement to the above solution, the outer side of the synchronous shaft is provided with a first groove that slides and engages with the first limiting groove.

[0014] As a further improvement to the above solution, a second groove is provided around the outer circumference of the synchronous shaft to slide and engage with the second limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The adjustable positioning pin position lower core die structure of the present invention can conveniently switch the position of the positioning pin on each positioning groove through the adjustment mechanism set on the working platform, so as to adapt to the manufacturing of dual drive axle housings of different sizes or shapes and improve the flexibility of the lower core die.

[0017] 2. The adjustable positioning pin position lower core die structure of the present invention can improve the accuracy of the lower die and core by adjusting the position of the positioning pin, thereby reducing waste caused by inaccurate positioning, shortening the manufacturing cycle and improving production efficiency.

[0018] 3. The adjustable positioning pin structure of the lower core die of this invention has a significant impact on product quality, especially during the manufacturing process of the dual drive axle housing. Incorrect positioning can lead to problems such as misalignment of the internal cavity of the housing, affecting product performance and lifespan. Adjustable positioning pins can help mitigate these issues and improve product quality.

[0019] 4. The adjustable positioning pin position lower core die structure of the present invention, through the provided moving plate, first limiting groove, second limiting groove and other structures, can realize the switching of the same positioning pin between different positioning grooves, which is convenient and reliable.

[0020] 5. The adjustable positioning pin position lower core die structure of the present invention, through the provided synchronous plate, various pressure rods, pressure blocks and other structures, can not only automatically lock when the positioning pin moves upward and extends to maintain the stability of the positioning pin state, but also automatically unlock when the positioning pin moves downward, which facilitates the switching of the positioning pin position. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention, with the boom, cylinder, and other structures removed;

[0022] Figure 2 for Figure 1 A partial cross-sectional view of the center positioning pin located within the work platform;

[0023] Figure 3 for Figure 2 A schematic diagram of the distribution of the first limiting groove on the moving plate;

[0024] Figure 4 for Figure 2 A schematic diagram of the distribution of the second limiting groove within the working platform;

[0025] Figure 5 for Figure 2 A side view of the synchronous shaft structure;

[0026] Figure 6 for Figure 2 A partial cross-sectional view of the locating pin extending out of one of the locating slots;

[0027] Figure 7 for Figure 2 A partial cross-sectional view of the locating pin extending out of another locating groove;

[0028] Figure 8 for Figure 2 Schematic diagram of the structure of the middle bearing block.

[0029] Explanation of key symbols:

[0030] 1. Working platform; 2. Positioning bracket; 3. Positioning block; 4. Positioning groove; 5. Plug; 6. Slide rail; 7. Moving plate; 8. First limiting groove; 9. Second limiting groove; 91. Horizontal section; 92. Vertical section; 10. Cylinder; 11. Screw; 12. Synchronizing plate; 13. Lifting rod; 14. First pressure rod; 15. Pressure-bearing block; 16. Positioning sleeve; 17. Slot; 18. First guide slope; 19. Second guide slope; 20. Second pressure rod; 21. Lifting arm; 22. Synchronizing shaft; 24. First groove; 25. Second groove; 26. First support seat; 27. Second support seat; 28. Third support seat; 100. Positioning pin. Detailed Implementation

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] Example 1

[0033] Please combine Figures 1 to 8 The lower core jig structure has an adjustable positioning pin position. The lower core jig positioning structure is set on the working platform 1. The working platform 1 is supported by a positioning bracket 2, and a positioning pin 100 is movably set on the positioning bracket 2. The working platform 1 is also equipped with multiple pairs of first support seats 26, second support seats 27, and third support seats 28 that are adapted to the dual drive axle housing.

[0034] The lower core die positioning structure includes a positioning block 3, which is located on the top of the positioning bracket 2. The positioning block 3 has two positioning slots 4. An adjustment mechanism is provided on the work platform 1. This mechanism switches the position of the positioning pin 100 in each positioning slot 4, thereby adjusting the position of the positioning pin 100 on the work platform 1. This allows the lower core die to adapt to the manufacturing of dual-drive axle housings of different sizes or shapes, improving its flexibility and increasing production efficiency. By adjusting the position of the positioning pin, the accuracy of the lower mold and the core can be improved. This reduces waste caused by inaccurate positioning, shortens the manufacturing cycle, and increases production efficiency.

[0035] A positioning sleeve 16 is detachably provided in the positioning groove 4. Specifically, the positioning sleeve 16 is pressed and fixed to the top of the positioning block 3 by a pressure plate. That is, when the positioning groove 4 is selected, the positioning sleeve 16 is first inserted into the corresponding positioning groove 4, and then the positioning pin 100 is moved to the bottom of the positioning groove 4 and moved upward through the through hole of the positioning sleeve 16. Then, the positioning sleeve 16 is pressed and fixed to the top of the positioning block 3 by the pressure plate and screws, so that the positioning pin 100 can remain vertically stable.

[0036] The positioning sleeve 16 has a through hole through which the positioning pin 100 can pass, reducing the shaking of the positioning pin 100 and improving positioning stability.

[0037] In this embodiment, when the positioning slot 4 is not in use, a plug 5 can be installed in the positioning slot 4 to completely seal its opening, so as to prevent pollutants in the environment from falling into the work platform 1 and causing pollution.

[0038] The adjustment mechanism includes a slide rail 6 horizontally installed inside the work platform 1. The slide rail 6 extends in a direction parallel to the line connecting the positioning slots 4. A movable plate 7 is installed at the bottom of the slide rail 6 to cooperate with it. The bottom of the positioning pin 100 is installed on the movable plate 7 and can move horizontally synchronously with the movable plate 7 so that the positioning pin 100 moves from one positioning slot 4 to another positioning slot 4, thereby realizing the position adjustment of the positioning pin 100.

[0039] The working platform 1 is equipped with an action component. The action component is driven by the movement of the moving plate 7, which enables the positioning pin 100 to move axially upward and penetrate to the outside of the positioning groove 4 at the moved location for subsequent positioning.

[0040] The working platform 1 has a boom 21, on which a cylinder 10 parallel to the slide rail 6 is rotatably inserted. A screw 11 is threaded into one end of the cylinder 10, and one end of the screw 11 is fixed to the side wall of the moving plate 7. By rotating the cylinder 10, the screw 11 can interact with its thread, causing the screw 11 to extend axially out of or retract into the cylinder 10, thereby adjusting the horizontal position of the moving plate 7.

[0041] The motion assembly includes a synchronous shaft 22 that is horizontally perpendicular to the slide rail 6. The bottom of the positioning pin 100 is vertically fixed to one end of the synchronous shaft 22. A first limiting groove 8 with a V-shaped structure is provided on the moving plate 7. The outer side of the synchronous shaft 22 is slidably locked onto the first limiting groove 8. A second limiting groove 9 is provided on the inner side wall of the working platform 1. The other end of the synchronous shaft 22 is slidably locked onto the second limiting groove 9.

[0042] The second limiting groove 9 has a horizontal section 91, and both ends of the horizontal section 91 have vertically upward sections 92. The middle part of the first limiting groove 8 and the middle part of the horizontal section 91 are located on the same vertical plane.

[0043] The outer side of the synchronous shaft 22 is provided with a first groove 24 that slides and engages with the first limiting groove 8.

[0044] The outer circumference of the synchronous shaft 22 is provided with a second groove 25 that slides and engages with the second limiting groove 9.

[0045] The working principle of this embodiment is as follows:

[0046] Initially, when the positioning pin 100 is located in one of the positioning slots 4, when it is necessary to adjust the position of the positioning pin 100, the positioning sleeve 16 is first placed into the other positioning slot 4, and then the rotating cylinder 10 drives the screw 11 to extend and retract axially, thereby driving the moving plate 7 to move relative to the slide rail 6 towards the other positioning slot 4.

[0047] During this period, under the combined action of the first limiting groove 8 and one of the vertical sections 92, the synchronous shaft 22 first drives the positioning pin 100 to move axially downward, so that the positioning pin 100 is disengaged from the original positioning groove 4 and housed inside the work platform 1, until the synchronous shaft 22 moves to and is held in the middle below the first limiting groove 8, so that the synchronous shaft 22 follows the moving plate 7 to move on the horizontal section 91 to another vertical section, until the positioning pin 100 moves to the bottom of another positioning groove 4. Then, under the combined action of the other vertical section 92 and the first limiting groove 8, the synchronous shaft 22 drives the positioning pin 100 to move upward and pass through to the top of the positioning sleeve 16, and removes the positioning sleeve 16 in the original positioning groove 4 and replaces it with a plug 5, thereby completing the switching of the position of the positioning pin 100, so that the lower core die can be adapted to the manufacturing of dual drive axle housings of different sizes or shapes.

[0048] Example 2

[0049] Please combine Figures 1 to 8 This embodiment 2 is an improvement on embodiment 1. In order to further improve the stability of the positioning pin 100 when it penetrates to the corresponding positioning groove 4, this embodiment has a moving plate 7 fixed at the bottom of the moving plate 7, and two hanging rods 13 fixed on both sides of the bottom of the moving plate 7. A first pressure rod 14 is horizontally fixed on the side wall of the two hanging rods 13 near the bottom. Two opposing pressure blocks 15 are elastically inserted into the bottom wall of the working platform 1. The two pressure blocks 15 are located on the opposite sides of the two positioning grooves 4 respectively.

[0050] A slot is provided on the inner bottom wall of the working platform 1, and a pressure block 15 is set on the slot. The bottom of the pressure block 15 is connected to the bottom wall of the slot by a spring. A slot 17 is provided on the pressure block 15 for locking the first pressure rod 14.

[0051] The pressure block 15 has a first guide slope 18 on one side. When the synchronous shaft 22 drives the positioning pin 100 to move upward, the movement of the moving plate 7 will cause the hanging rod 13 to drive the first pressure rod 14 to squeeze the first guide slope 18, causing the pressure block 15 to temporarily move downward to squeeze the spring, causing the first pressure rod 14 to move above the slot 17. Then the spring force is released to push the pressure block 15 upward so that the slot 17 and the first pressure rod 14 are locked, thereby locking the position of the moving plate 7, and thus ensuring that the positioning pin 100 that penetrates to the top of the corresponding positioning slot 4 can remain stable.

[0052] When the positioning pin 100 needs to be moved down to replace the positioning groove 4, in this embodiment, two second pressure rods 20 that can rotate towards the center are elastically rotatably provided at the bottom of the synchronization plate 12 on the opposite sides of the two lifting rods 13. One end of the second pressure rod 20 is installed at the bottom of the synchronization plate 12 by a coil spring, and the maximum rotation angle of the second pressure rod 20 is ninety degrees. When the second pressure rod 20 is not under pressure, the second pressure rod 20 always remains perpendicular to the bottom of the synchronization plate 12.

[0053] The other side of the pressure block 15 has a second guide slope 19.

[0054] In this embodiment, when the positioning pin 100 moves upward, the second pressure rod 20 will first press against the pressure block 15, forcing it to deflect at a certain angle towards the center of the synchronous plate 12 (spring compression deformation), so that the second pressure rod 20 can move to the other side of the pressure block 15. After moving to the other side, the second pressure rod 20 will return to the vertical state under the action of the spring force. When the positioning pin 100 moves downward, the synchronous plate 12 drives the second pressure rod 20 to press against the second guide slope 19. At this time, the second pressure rod 20 cannot deflect, so the second pressure rod 20 will squeeze the pressure block 15 to move downward. The spring is compressed, which will cause the slot 17 to separate from the first pressure rod 14, avoiding interference with the moving plate 7 changing the position of the positioning pin 100 through the synchronous shaft 22.

[0055] In this embodiment, the diameter of the first pressure rod 14 is smaller than the diameter of the slot 17, so as to avoid interfering with the movement of the first pressure rod 14 in the slot 17.

[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A lower core die structure with an adjustable positioning pin position, wherein the lower core die positioning structure is disposed on a working platform, a positioning bracket is supported on the working platform, and a positioning pin is movably disposed on the positioning bracket, characterized in that... The lower core fixture positioning structure includes a positioning block, which is disposed on the top of the positioning bracket. The positioning block has two positioning slots. An adjustment mechanism is provided on the working platform. The adjustment mechanism is used to switch the position of the positioning pin in each of the positioning slots. The adjustment mechanism includes a slide rail horizontally disposed inside the work platform. The slide rail extends parallel to the direction of the line connecting the positioning slots. A movable plate is disposed at the bottom of the slide rail and cooperates with it. The bottom of the positioning pin is disposed on the movable plate and can move horizontally synchronously with the movable plate to move the positioning pin from one positioning slot to another. An actuating component is disposed inside the work platform. The actuating component is driven by the movement of the movable plate and can move the positioning pin axially upward to pass through the outside of the positioning slot at the moved position. The motion assembly includes a synchronous shaft that is horizontally perpendicular to the slide rail. The bottom of the positioning pin is vertically fixed to one end of the synchronous shaft. A first limiting groove with a V-shaped structure is provided on the moving plate. The outer side of the synchronous shaft is slidably engaged in the first limiting groove. A second limiting groove is provided on the inner side wall of the working platform. The other end of the synchronous shaft is slidably engaged in the second limiting groove. A movable plate is fixed at the bottom of the movable plate. Two hanging rods are fixed on both sides of the bottom of the movable plate. A first pressure rod is horizontally fixed on the side wall of the two hanging rods near the bottom. Two opposing pressure blocks are elastically inserted into the bottom wall inside the working platform. The two pressure blocks are located on the opposite sides of the two positioning slots. A block groove is provided on the bottom wall of the work platform, and a pressure block is set on the block groove. The bottom of the pressure block is connected to the bottom wall of the block groove by a spring. A slot is provided on the pressure block to hold the first pressure rod. The pressure block has a first guide slope on one side. When the synchronous shaft drives the positioning pin to move upward, the movement will cause the hanger to drive the first pressure rod to squeeze the first guide slope, causing the pressure block to temporarily move downward to squeeze the spring, and causing the first pressure rod to move above the slot. The other side of the pressure block has a second guide slope. The second pressure rod will first press the pressure block, forcing it to deflect towards the middle of the synchronous plate. When the positioning pin moves down, the synchronous plate will drive the second pressure rod to press the second guide slope. At this time, the second pressure rod cannot deflect. The second pressure rod will squeeze the pressure block to move down. The spring will be compressed, which will cause the slot to separate from the first pressure rod. The diameter of the first pressure rod is smaller than the diameter of the slot to avoid interfering with the movement of the first pressure rod in and out of the slot.

2. The lower core die structure with adjustable positioning pin position as described in claim 1, characterized in that, A positioning sleeve is detachably provided in the positioning groove, and the positioning sleeve has a through hole through which the positioning pin can pass.

3. The lower core die structure with adjustable positioning pin position as described in claim 2, characterized in that, The positioning sleeve is fixed to the top of the positioning block by a pressure plate.

4. The lower core die structure with adjustable positioning pin position as described in claim 1, characterized in that, When the positioning groove is not in use, a plug that completely seals the opening of the groove can be installed in the positioning groove.

5. The lower core die structure with adjustable positioning pin position as described in claim 1, characterized in that, The working platform has a boom, on which a cylinder parallel to the slide rail is rotatably inserted. A screw is threaded into one end of the cylinder, and one end of the screw is fixed to the side wall of the moving plate.

6. The lower core die structure with adjustable positioning pin position as described in claim 1, characterized in that, The second limiting groove has a horizontal section, and both ends of the horizontal section have vertical sections pointing vertically upwards.

7. The lower core die structure with adjustable positioning pin position as described in claim 6, characterized in that, The outer side of the synchronous shaft is provided with a first groove that slides and engages with the first limiting groove.

8. The lower core die structure with adjustable positioning pin position as described in claim 1, characterized in that, The outer circumference of the synchronous shaft is provided with a second groove that slides and engages with the second limiting groove.

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