A multi-station stamping forming device for motorcycle accessories facilitating mold switching

Abstract

This invention relates to the field of stamping equipment technology, specifically to a multi-station stamping forming device for motorcycle parts that facilitates mold switching. It includes a first and second stamping machine arranged side-by-side at intervals, a support platform, and a displacement unit. The support platform is disposed on the worktables of the first and second stamping machines and has a rectangular plate-like structure. The displacement unit is movably disposed on the top surface of the support platform, and slides along the length of the support platform. A receiving groove is also provided on the top surface of the displacement unit. This invention, through the support platform and displacement unit, can automatically transfer workpieces between the first and second lower molds without manual or robotic intervention. This improves transfer efficiency, saves labor costs, and avoids high initial investment costs.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, specifically to a multi-station stamping forming device for motorcycle parts that facilitates mold switching. Background Technology

[0002] In the motorcycle manufacturing industry, the forming of many parts is inseparable from the stamping process. Key parts such as frames, wheel hubs, and engine housings often have complex shapes, including various bending, stretching, and punching features, so they usually need to undergo multiple stamping processes.

[0003] Specifically, due to the complexity and precision requirements of these parts' shapes, a single stamping process cannot meet these requirements, necessitating multiple stamping operations. Multiple stamping operations allow for the gradual shaping of the parts, enabling the processing of specific shape features during each stamping process. This achieves precise control over the complex shapes, ensuring the quality and performance of the parts and meeting the stringent requirements of motorcycles in terms of safety, reliability, and comfort.

[0004] Currently, for motorcycle parts requiring multiple stamping operations, existing multi-station stamping methods typically involve placing a workpiece into the lower die of a stamping machine, completing one stamping cycle, and then manually or robotically removing it from the lower die. This process is repeated, placing the stamped workpiece into the lower die of another stamping machine, and so on, to complete multiple stamping operations. However, while this method can meet the need for multiple stamping operations, it also has several drawbacks. Specifically, manual transfer is hampered by limited worker strength and attention; prolonged repetitive operations lead to fatigue and reduced transfer speed. Furthermore, manual transfer undoubtedly increases labor costs. Robotic transfer requires significant upfront investment in equipment and ongoing maintenance, making it unaffordable for small businesses. Therefore, this invention proposes a multi-station stamping forming device for motorcycle parts that facilitates die switching to address these shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-station stamping forming device for motorcycle parts that facilitates mold switching, in order to solve the problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: a multi-station stamping forming device for motorcycle parts with easy mold switching, comprising a first stamping machine and a second stamping machine arranged side by side at intervals, and further comprising: A support platform is provided on the worktable of the first and second stamping machines, and the support platform has a rectangular plate-shaped structure. The displacement part is movably disposed on the top surface of the support platform, and the displacement part and the support platform slide together along the length direction of the support platform. The top surface of the displacement part is also provided with a receiving groove. The first lower mold and the second lower mold are fixedly connected side by side and movably disposed in the receiving groove; A clamping mechanism is disposed on the top surface of the displacement part and is used to clamp the workpiece and lift it upward; The receiving groove is provided with a first electromagnet and a second electromagnet on the left and right sides respectively. When the first electromagnet is energized, the first lower mold is located in the center of the receiving groove. When the second electromagnet is energized, the second lower mold is located in the center of the receiving groove.

[0007] Optionally, the top surface of the support platform is provided with grooves distributed along its own length, and the displacement part is slidably connected in the grooves.

[0008] Optionally, the support platform is further provided with a linear drive assembly, which is used to control the displacement part to slide along the groove.

[0009] Optionally, the clamping mechanism includes two fixed frames, which are respectively fixedly disposed at the middle positions of the front and rear sides of the top of the displacement part. The fixed frames are in the shape of a door. A movable frame is provided on the inner side of the fixed frame along the vertical direction. A clamping rod is provided through the upper edge of the movable frame. The opposing ends of the two clamping rods are provided with clamping parts.

[0010] Optionally, the clamping part includes a clamping cover and a clamping plate. The clamping cover is connected to the clamping rod, and the clamping plate is elastically connected to the side of the clamping cover facing away from the clamping rod by a spring.

[0011] Optionally, the top front and rear sides of the support platform are symmetrically provided with wiring plates. The middle section of the wiring plate is raised towards the displacement part. The middle section of the two wiring plates is smaller than the distance between their two ends. A wiring groove is opened through the wiring plate. The clamping rod has a cable routing post at one end facing away from the clamping part. The cable routing post passes through the cable routing groove. A guide protrusion is provided at the middle section of the surface of the cable routing post. A guide pad is also movably sleeved on the outside of the cable routing post. The guide pad and the outer end of the cable routing post are elastically connected by an elastic element. The guide protrusion and the guide pad are respectively attached to the inner and outer surfaces of the cable routing plate. When the wiring post moves to the middle position of the wiring board, the two clamping parts can approach each other and clamp the workpiece together.

[0012] Optionally, the wiring groove is positioned with both ends low and the middle high. When the wiring post moves to the middle section of the wiring groove, the two clamping parts can clamp the workpiece and lift it upward.

[0013] Optionally, a lifting block is movably embedded in the inner bottom surface of the first lower mold, and an installation cavity is provided on the front and rear sides and the bottom of the first lower mold. A lifting adjustment component for driving the lifting block to rise and fall is provided in the installation cavity. When the two clamping parts approach each other, the lifting adjustment assembly can drive the lifting block to rise and lift the workpiece upward.

[0014] Optionally, the lifting adjustment assembly includes two movable parts, each movable part having an L-shaped plate structure, the top of the movable part extending out of the mounting cavity and protruding above the top surface of the first lower mold; The bottom surface of the lifting block is provided with a lifting column, which is movably inserted into the mounting cavity, and the lifting column is hinged to the two movable parts by two connecting rods respectively. The bottom surface of the clamping rod is provided with a blocking part. When the two clamping parts approach each other, the two blocking parts can push the two movable parts closer to each other.

[0015] Optionally, a return spring is sleeved on the outside of the lifting column. The two ends of the return spring abut against the inner top surface of the mounting cavity and the upper edge of the bottom end of the lifting column, respectively. In the natural state, the return spring is in a compressed state, and the top surface of the lifting block is flush with the inner bottom surface of the first lower mold. The bottom of the mounting cavity is provided with a base plate, and both of the movable parts slide in cooperation with the base plate.

[0016] Compared with the prior art, the present invention provides a multi-station stamping forming device for motorcycle parts that facilitates mold switching, and has the following beneficial effects: 1. The present invention, through structures such as a support platform and a displacement unit, can automatically transfer workpieces between the first lower mold and the second lower mold without the need for manual or robot intervention. This not only improves transfer efficiency but also helps save labor costs and avoids high upfront investment costs. 2. The present invention uses the alternating energization of two electromagnets to keep the first and second lower dies alternately in a centered state, and when one of the lower dies is in a centered state, the other lower die is always in contact with an electromagnet, which helps to maintain stamping accuracy. 3. The present invention, through the design of the wiring board and wiring channel, enables the clamping mechanism to automatically clamp the workpiece and lift it upward, thereby facilitating the switching between the two molds. Furthermore, the clamping mechanism does not require electrical control throughout the process, which saves equipment manufacturing costs while ensuring the timeliness of clamping and lifting actions. 4. The present invention also has a lifting block structure. When the clamping mechanism performs the clamping action, the lifting block can be automatically raised, thereby facilitating the clamping mechanism to clamp the workpiece, thus further helping to improve the automation level of the present invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support platform structure of the present invention; Figure 3 This is a top view of the support platform structure of the present invention; Figure 4 This is a top view of the displacement section structure of the present invention; Figure 5 This is a schematic diagram of the second lower mold structure of the present invention; Figure 6 This is a schematic diagram of the clamping mechanism of the present invention; Figure 7 This is a cross-sectional view of the second lower mold structure of the present invention; Figure 8 for Figure 2 Enlarged view of point A in the middle; Figure 9 for Figure 3 Enlarged view of the corresponding area at point B.

[0018] In the diagram: 100, First stamping machine; 200, Second stamping machine; 300, Support platform; 301, Slide rail; 302, Linear drive assembly; 303, Wiring board; 304, Wiring trough; 400, Displacement section; 401, Receiving groove; 402, First lower die; 403, Second lower die; 404, First electromagnet; 405, Second electromagnet; 406, Lifting block; 407, Mounting cavity; 40 8. Base plate; 409. Lifting and adjusting assembly; 4091. Moving part; 4092. Connecting rod; 410. Lifting column; 411. Return spring; 500. Clamping mechanism; 501. Fixed frame; 502. Moving frame; 503. Clamping rod; 504. Clamping part; 5041. Clamping cover; 5042. Clamping piece; 505. Cable routing post; 506. Guide protrusion; 507. Guide pad; 508. Elastic element. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 - Figure 9This application proposes a multi-station stamping forming device for motorcycle parts that facilitates mold switching. It includes a first stamping machine 100 and a second stamping machine 200 arranged side-by-side with intervals. The first stamping machine 100 and the second stamping machine 200 are fixedly connected by a bracket to ensure they are integrated as a whole, enhancing the overall stability of the device. Both machine tools include a frame, a worktable, a control box, a motor, and a slider. The slider is located directly above the worktable, and its bottom end is connected to an upper mold. It should be noted that the upper molds connected to the sliders of the first stamping machine 100 and the second stamping machine 200 are different.

[0021] It is worth noting that this embodiment has only two stamping machines, so this embodiment can complete two consecutive stampings of the workpiece, and is suitable for motorcycle parts that require two stampings.

[0022] This embodiment also includes a support platform 300 and a displacement unit 400. The support platform 300 is disposed on the worktable of the first stamping machine tool 100 and the second stamping machine tool 200, and the support platform 300 has a rectangular plate-like structure. The support platform 300 maintains a horizontal posture, and both ends of the support platform 300 extend to the outside of the two worktables. The displacement unit 400 is movably disposed on the top surface of the support platform 300, and the displacement unit 400 and the support platform 300 slide together along the length direction of the support platform 300. Specifically, the top surface of the support platform 300 has a sliding groove 301 distributed along its own length direction, and the displacement unit 400 is slidably connected in the sliding groove 301. It is worth mentioning that the length direction of the support platform 300 is consistent with the arrangement direction of the two machine tools.

[0023] Furthermore, the support platform 300 is also equipped with a linear drive assembly 302, which is used to control the displacement part 400 to slide along the slide groove 301. Specifically, in this embodiment, the linear drive assembly 302 includes a motor and a lead screw. The motor is fixedly mounted on one end of the support platform 300 via a motor mount, and the lead screw is rotatably connected in the slide groove 301 and threadedly engaged with the displacement part 400. The output shaft of the motor is coaxially fixedly connected to the lead screw. Therefore, when the motor controls the lead screw to rotate forward or reverse, it can drive the displacement part 400 to slide left or right.

[0024] In this embodiment, the top surface of the displacement part 400 is also provided with a receiving groove 401, and a first lower mold 402 and a second lower mold 403 are provided in the receiving groove 401; the first lower mold 402 and the second lower mold 403 are fixedly connected side by side and movably disposed in the receiving groove 401; the first lower mold 402 and the second lower mold 403 are both made of cast iron and have a rectangular plate structure, and the first lower mold 402 is used to cooperate with the upper mold on the first stamping machine tool 100, and the second lower mold 403 is used to cooperate with the upper mold on the second stamping machine tool 200.

[0025] In addition, the first lower die 402 and the second lower die 403 are slidably engaged with the interior of the receiving groove 401, and the first lower die 402 and the second lower die 403 can slide in the left and right directions. Specifically, the interior of the receiving groove 401 is provided with a first electromagnet 404 and a second electromagnet 405 on the left and right sides respectively. When the first electromagnet 404 is energized, the first lower die 402 is located in the center of the interior of the receiving groove 401, and the second lower die 403 is in contact with the first electromagnet 404. When the second electromagnet 405 is energized, the second lower die 403 is located in the center of the interior of the receiving groove 401, and the first lower die 402 is in contact with the second electromagnet 405. The function is to improve the centering accuracy of the lower die and ensure the stamping accuracy.

[0026] It is worth mentioning that the motorcycle parts to be processed need to be placed in the first lower mold 402 first, and then the first stamping machine tool 100 controls the corresponding upper mold to press down to complete the first stamping of the workpiece; then the workpiece is transferred to the second lower mold 403, and the second stamping machine tool 200 controls the corresponding upper mold to press down to complete the second stamping of the workpiece.

[0027] It should be added that when the displacement part 400 is located at the leftmost end of the slide 301 and the first electromagnet 404 is energized, the first lower mold 402 is located directly below the corresponding upper mold; when the displacement part 400 is located at the rightmost end of the slide 301 and the second electromagnet 405 is energized, the second lower mold 403 is located directly below the corresponding upper mold.

[0028] This embodiment also includes a clamping mechanism 500, which is disposed on the top surface of the displacement part 400 and is used to clamp the workpiece and lift it upward. Specifically, the clamping mechanism 500 includes two fixed frames 501, which are respectively fixedly disposed at the middle positions of the front and rear sides of the top surface of the displacement part 400. The fixed frames 501 are U-shaped, and a movable frame 502 is slidably disposed on the inner side of the fixed frame 501 along the vertical direction. A clamping rod 503 is movably disposed through the upper edge of the movable frame 502, and clamping parts 504 are provided at the opposing ends of the two clamping rods 503. That is, the movable frame 502 can move vertically up and down inside the fixed frame 501, while the clamping rod 503 can slide back and forth along its own length direction.

[0029] Specifically, the clamping part 504 includes a clamping cover 5041 and a clamping piece 5042. The clamping cover 5041 is connected to the clamping rod 503. The clamping cover 5041 has an internally hollow structure. The clamping piece 5042 is elastically connected to the side of the clamping cover 5041 facing away from the clamping rod 503 by a spring. Figure 6 As shown. In this way, when the clamping plate 5042 comes into contact with the clamped workpiece, a rigid collision will not occur, which helps to protect the workpiece.

[0030] In another embodiment of this application, wiring plates 303 are symmetrically arranged on both the front and rear sides of the top face of the support platform 300. The middle section of the wiring plate 303 is raised towards the displacement part 400. The distance between the middle sections of the two wiring plates 303 is smaller than the distance between their two ends, and a wiring groove 304 is formed through the wiring plate 303. Figure 2 As shown, the wiring board 303 has a three-section structure. The middle section is closer to the slide groove 301 than the left and right sections. The wiring board 303 is made of aluminum alloy and is fixedly connected to the top surface of the support platform 300 by bolts.

[0031] Furthermore, a cable routing post 505 is provided at one end of the clamping rod 503 facing away from the clamping part 504. The cable routing post 505 passes through the cable routing groove 304. A guide protrusion 506 is provided at the middle section of the surface of the cable routing post 505. A guide pad 507 is also movably sleeved on the outside of the cable routing post 505. The guide pad 507 and the outer end of the cable routing post 505 are elastically connected by an elastic element 508. The guide protrusion 506 and the guide pad 507 are respectively attached to the inner and outer surfaces of the cable routing plate 303. Both sides; wherein, the cable routing post 505 and the clamping rod 503 are bolted together and fixed, the guide protrusion 506 and the cable routing post 505 are integrally formed, and the guide protrusion 506 is in contact with the inner surface of the cable routing plate 303, while the guide gasket 507 is elastically connected to the outer end of the cable routing post 505; specifically in this embodiment, the elastic element 508 is a spring, and the spring is always in a compressed state, the function of which is to keep the guide gasket 507 always in contact with the outer surface of the cable routing plate 303.

[0032] Therefore, during the movement of the wiring post 505 along the wiring groove 304, when the wiring post 505 is located at the left and right ends of the wiring plate 303, the distance between the two clamping parts 504 is the farthest, and the distance between them is greater than the length of the workpiece to be processed; when the wiring post 505 enters the middle section of the wiring plate 303, the two clamping parts 504 can move closer to each other, thereby clamping the workpiece.

[0033] Furthermore, the wiring trough 304 is positioned with lower ends and a higher middle section. When the wiring post 505 moves to the middle section of the wiring trough 304, the two clamping parts 504 can clamp the workpiece and lift it upwards. Specifically, the higher section of the wiring trough 304 is located entirely on the middle section of the wiring board 303, meaning that the two clamping parts 504 first clamp the workpiece before lifting it upwards. It is worth mentioning that the two ends of the wiring trough 304 are at the same height, and the maximum height difference of the wiring trough 304 is not less than 30mm.

[0034] In another embodiment of this application, a lifting block 406 is movably embedded in the inner bottom surface of the first lower mold 402. The front and rear sides and the bottom of the first lower mold 402 are provided with mounting cavities 407. The bottom of the mounting cavity 407 is provided with a base plate 408. The mounting cavity 407 is provided with a lifting adjustment component 409 for driving the lifting block 406 to rise and fall. When the two clamping parts 504 approach each other, the lifting adjustment component 409 can drive the lifting block 406 to rise and lift the workpiece upward.

[0035] Specifically, the lifting adjustment assembly 409 includes two movable parts 4091, each with an L-shaped plate structure. The top of each movable part 4091 extends out of the mounting cavity 407 and protrudes above the top surface of the first lower mold 402. Both movable parts 4091 are slidably engaged with the base plate 408; that is, the two movable parts 4091 can move closer to or further away from each other. The bottom surface of the lifting block 406 is provided with a lifting column 410, which extends movably into the mounting cavity 407. The lifting column 410 is hinged to the two movable parts 4091 by two connecting rods 4092. When the two movable parts 4091 move closer to each other, they can push the lifting column 410 and the lifting block 406 to rise; conversely, when the two movable parts 4091 move further away from each other, they can pull the lifting column 410 and the lifting block 406 to fall.

[0036] Furthermore, a return spring 411 is sleeved on the outside of the lifting column 410. The two ends of the return spring 411 abut against the inner top surface of the mounting cavity 407 and the upper edge of the bottom end of the lifting column 410, respectively. In its natural state, the return spring 411 is in a compressed state, and the top surface of the lifting block 406 is flush with the inner bottom surface of the first lower mold 402. It is worth mentioning that the inner bottom surface of the first lower mold 402 has an embedded groove for the lifting block 406 to be embedded. The gap between the lifting block 406 and the embedded groove is extremely small. Under the premise that the lifting block 406 can move freely up and down, the gap will not affect the stamping quality.

[0037] To enable the clamping parts 504 to move closer together, thus bringing the two movable parts 4091 closer together, this embodiment provides a blocking part 5031 on the bottom surface of the clamping rod 503. When the two clamping parts 504 move closer together, the two blocking parts 5031 can push the two movable parts 4091 closer together. It should be noted that the two blocking parts 5031 are always located on the outside of the two movable parts 4091, while the two clamping parts 504 are always located on the top inside of the two movable parts 4091. It is worth mentioning that when the two clamping parts 504 clamp the workpiece and rise, the blocking part 5031 disengages from the movable part 4091. At this time, under the action of the return spring 411, the two movable parts 4091 will move away from each other and return to their initial position.

[0038] In summary, in the specific application of this embodiment, in the initial state, the displacement part 400 is located on the left side of the slide groove 301, as shown below. Figure 2 The workpiece is then placed in the first lower die 402, and after one stamping, the displacement part 400 is controlled to move to the right by the linear drive assembly 302. During this process, the guide post 505 moves along the guide groove 304, thereby clamping the workpiece with the two clamping parts 504. It should be noted that when the guide post 505 is located in the middle of the guide groove 304, the second electromagnet 405 is energized, so that the second lower die 403 is in the centered state.

[0039] As the guide post 505 moves to the right end of the guide groove 304, the two clamping parts 504 can place the workpiece into the second lower die 403; until the displacement part 400 moves to the rightmost end of the slide 301, at which point the second lower die 403 is located directly below the corresponding upper die. After the secondary stamping is completed, the operator removes the stamped workpiece, and the linear drive assembly 302 controls the displacement part 400 to return to its initial position.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station stamping forming device for motorcycle parts with easy mold switching, comprising a first stamping machine and a second stamping machine arranged side by side at intervals, characterized in that, Also includes: A support platform is provided on the worktable of the first and second stamping machines, and the support platform has a rectangular plate-shaped structure. The displacement part is movably disposed on the top surface of the support platform, and the displacement part and the support platform slide together along the length direction of the support platform. The top surface of the displacement part is also provided with a receiving groove. The first lower mold and the second lower mold are fixedly connected side by side and movably disposed in the receiving groove; A clamping mechanism is disposed on the top surface of the displacement part and is used to clamp the workpiece and lift it upward; The receiving groove is provided with a first electromagnet and a second electromagnet on the left and right sides respectively. When the first electromagnet is energized, the first lower mold is located in the center of the receiving groove. When the second electromagnet is energized, the second lower mold is located in the center of the receiving groove.

2. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 1 wherein: The top surface of the support platform is provided with grooves distributed along its own length, and the displacement part is slidably connected in the grooves.

3. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 2 wherein: The support platform is also provided with a linear drive assembly, which is used to control the displacement part to slide along the slide groove.

4. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 1 wherein: The clamping mechanism includes two fixed frames, which are respectively fixedly installed at the middle positions of the front and rear sides of the top of the displacement part. The fixed frames are in the shape of a door. A movable frame is provided on the inner side of the fixed frame along the vertical direction. A clamping rod is provided through the upper edge of the movable frame. The opposing ends of the two clamping rods are provided with clamping parts.

5. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 4 wherein: The clamping part includes a clamping cover and a clamping plate. The clamping cover is connected to the clamping rod, and the clamping plate is elastically connected to the side of the clamping cover opposite to the clamping rod by a spring.

6. The multi-station stamping forming device for motorcycle parts with easy mold switching according to claim 4, characterized in that: The top front and rear sides of the support platform are symmetrically provided with wiring plates. The middle section of the wiring plate is raised towards the displacement part. The middle section of the two wiring plates is smaller than the distance between their two ends. A wiring groove is opened through the wiring plate. The clamping rod has a cable routing post at one end facing away from the clamping part. The cable routing post passes through the cable routing groove. A guide protrusion is provided at the middle section of the surface of the cable routing post. A guide pad is also movably sleeved on the outside of the cable routing post. The guide pad and the outer end of the cable routing post are elastically connected by an elastic element. The guide protrusion and the guide pad are respectively attached to the inner and outer surfaces of the cable routing plate. When the wiring post moves to the middle position of the wiring board, the two clamping parts can approach each other and clamp the workpiece together.

7. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 6 wherein: The wiring channel is positioned with both ends low and the middle high. When the wiring post moves to the middle section of the wiring channel, the two clamping parts can clamp the workpiece and lift it upward.

8. A multi-station stamping forming device for motorcycle parts with easy mold switching according to claim 7, characterized in that: A lifting block is movably embedded in the inner bottom surface of the first lower mold. The front and rear sides and the bottom of the first lower mold are provided with mounting cavities. A lifting adjustment component for driving the lifting block to rise and fall is provided in the mounting cavity. When the two clamping parts approach each other, the lifting adjustment assembly can drive the lifting block to rise and lift the workpiece upward.

9. A multi-station press forming apparatus for motorcycle accessories with ease of mold changeover as claimed in claim 8 wherein: The lifting and adjusting assembly includes two movable parts, each of which has an L-shaped plate structure. The top of each movable part extends out of the mounting cavity and protrudes above the top surface of the first lower mold. The bottom surface of the lifting block is provided with a lifting column, which is movably inserted into the mounting cavity, and the lifting column is hinged to the two movable parts by two connecting rods respectively. The bottom surface of the clamping rod is provided with a blocking part. When the two clamping parts approach each other, the two blocking parts can push the two movable parts closer to each other.

10. A motorcycle accessory multi-station press forming apparatus facilitating changeover of dies as claimed in claim 9 wherein: A return spring is sleeved on the outside of the lifting column. The two ends of the return spring abut against the inner top surface of the mounting cavity and the upper edge of the bottom end of the lifting column, respectively. In the natural state, the return spring is in a compressed state, and the top surface of the lifting block is flush with the inner bottom surface of the first lower mold. The bottom of the mounting cavity is provided with a base plate, and both of the movable parts slide in cooperation with the base plate.

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