A die changing apparatus

Abstract

This invention relates to a mold changing device, comprising a transport vehicle and a positioning structure. The transport vehicle is used to transport the mold; the positioning structure includes a positioning frame and a lifting part. The positioning frame is connected to the lower template of the mold frame, and the lifting part is movably mounted on the positioning frame. The transport vehicle has a docking part, which is detachably connected to the lifting part. Compared with the prior art, this invention, through the connection between the positioning structure and the mold frame, determines the position and height of the lower template of the mold frame. The lifting part moves the docking part of the transport vehicle, adjusting its height to raise one side of the transport vehicle. There is no height difference in the movement of the mold between the mold frame and the transport vehicle, thus improving mold changing safety and efficiency.

Description

Technical Field

[0001] This invention relates to mold transport equipment, and more particularly to a mold changing device. Background Technology

[0002] Sunroofs are a common feature in modern cars, not only increasing natural light and ventilation but also enhancing interior comfort and aesthetics. The production of a car sunroof involves multiple stages, including design, manufacturing, and installation. During the design phase, the sunroof's size, shape, and materials are determined based on the car model and customer requirements. The manufacturing phase includes mold making, glass edging, sheet metal processing, and glass fabrication. The installation phase involves mounting the sunroof on the roof and performing sealing and adjustments.

[0003] During the glass edging process, a mold needs to be installed on a mold frame, and polyurethane foam is injected into the mold. The mold then undergoes flipping, closing, and opening operations on the mold frame. Finally, the polyurethane foam cures to form the plastic component of the sunroof. Because the size and shape of sunroofs vary between different car models and customers, different molds are used, so the molds on the mold frame need to be replaced.

[0004] For some large molds, some factories use cranes and manual labor to change the molds. On the one hand, when changing molds with cranes, it is easy to cause illegal operations such as pulling or lifting at an angle, and the wire rope is also prone to damaging the mold during the pulling process. On the other hand, because the pulling distance is difficult to control, the operators rely entirely on their own feeling to operate, which can easily lead to accidents where improper force causes the mold to slip to the ground and injure people.

[0005] Due to varying floor levels in different factory buildings, the height of the lower mold plate from the ground differs for each mold frame. To directly transfer the mold from the mold frame to the mold changing device, avoiding the use of a crane, an adjustable mold changing device was developed. Before moving the mold, the height of the mold changing device needs to be adjusted to match the mold frame height. However, manual alignment is inaccurate and inefficient, affecting the overall efficiency of mold changing. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art by providing a mold changing device that improves height alignment efficiency and thus improves mold changing efficiency.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A mold changing device, comprising:

[0009] The transport vehicle is used to transport the mold;

[0010] The positioning structure includes a positioning frame and a lifting part. The positioning frame is connected to the lower template of the mold frame. The lifting part is movably mounted on the positioning frame. The transport vehicle is provided with a docking part, which is detachably connected to the lifting part.

[0011] In one embodiment, the lifting part is provided with a locking block, and the docking part is provided with a groove, the locking block being able to be inserted into the groove.

[0012] In one embodiment, the positioning frame is provided with a detector and a driver. The detector is positioned opposite the card block and is used to detect the docking part. The driver is connected to the lifting part and is used to drive the lifting part to move up and down relative to the positioning frame.

[0013] The mold changing device also includes a controller, which is electrically connected to the detector and the driver respectively. When the detector detects the docking part, the controller controls the driver to start.

[0014] In one embodiment, the positioning frame is provided with a detection mounting plate, the detection mounting plate is provided with an elongated detection mounting groove, the detector is disposed in the detection mounting groove and can move along the length direction of the detection mounting groove, the length direction of the detection mounting groove is the same as the insertion direction of the docking part.

[0015] In one embodiment, the positioning frame includes a positioning plate, the upper surface of which is flush with the upper surface of the lower template. The locking block is located between the lifting part and the positioning plate. The docking part is stepped and includes a first docking part and a second docking part connected to each other. The upper surface of the second docking part is higher than the upper surface of the first docking part. The first docking part can extend between the lifting part and the positioning plate. When the first docking part abuts against the positioning plate, the upper surface of the second docking part is flush with the upper surface of the positioning plate.

[0016] In one embodiment, the positioning frame includes two first support plates and a fixed plate, with both ends of the fixed plate connected to the first support plates respectively. The lifting part is disposed between the positioning plate and the fixed plate, and the driver is disposed between the positioning plate and the fixed plate.

[0017] In one embodiment, the two ends of the positioning plate are respectively connected to the first support plate, the positioning frame is provided with a plurality of screws, the screws pass through the positioning plate and are threadedly connected to the first support plate, the screws are provided with a positioning plate limiting part, and the positioning plate limiting part is located between the positioning plate and the first support plate.

[0018] In one embodiment, the actuator includes an air bag and a flow valve. The air bag is disposed between the lifting part and the fixed plate. The air bag's air inlet pipe passes through the fixed plate and is connected to an air source. The flow valve is disposed on the air inlet pipe.

[0019] In one embodiment, the mold changing vehicle is provided with a guide plate, and the positioning frame is provided with left and right positioning blocks on both sides. The guide plate can be inserted between the two left and right positioning blocks, so that the two sides of the guide plate abut against the sides of the left and right positioning blocks respectively.

[0020] In one embodiment, the transport vehicle is provided with a front limiting assembly, which includes an operating lever and a front limiting block. The front limiting block is connected to the operating lever, and the operating lever is movably connected to the transport vehicle. When the operating lever is in a first position, the front limiting block protrudes from the mold bearing surface of the transport vehicle to limit the front end position of the mold. When the operating lever is in a second position, the front limiting block is lower than the mold bearing surface of the transport vehicle.

[0021] In one embodiment, the transport vehicle is provided with two limiting mounting blocks, and the operating lever moves through the limiting mounting blocks and connects to the front limiting block. The operating lever is provided with a first gasket, and a second elastic member is provided between the first gasket and the limiting mounting blocks. The first gasket is located between the two limiting mounting blocks and on the side of the second elastic member away from the front limiting block. When the operating lever is in the second position, the second elastic member is in a compressed state.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. During use, this mold-changing device first connects the docking part of the transport vehicle to the lifting part of the positioning structure. Then, the relative position of the lifting part and the positioning frame is adjusted so that the height of the docking part is consistent with the height of the lower template of the mold frame. Since the positioning frame is connected to the mold frame, the mold can be pushed onto the transport vehicle along the lower template and the positioning frame. Then, the connection between the docking part and the lifting part is disconnected, and the mold is transported to another mold frame using the transport vehicle. The docking part and the lifting part are then reconnected, and the mold is transported onto the mold frame along the docking part and the positioning frame of the transport vehicle, completing the mold-changing operation. This mold-changing device connects to the mold frame through the positioning structure, determining the position and height of the lower template of the mold frame. The lifting part moves the docking part of the transport vehicle, adjusting its height to raise one side of the transport vehicle. There is no height difference in the movement of the mold between the mold frame and the transport vehicle, improving mold-changing safety and efficiency.

[0024] 2. The mold changing device connects the lifting part and the docking part through a locking block and a groove. Therefore, the lifting part can drive the docking part to be raised or lowered, preventing the docking part from sliding on the lifting part, and the connection and disassembly efficiency is high.

[0025] 3. When the docking part connects with the lifting part, the first docking part extends between the lifting part and the positioning plate, and the locking block extends into the groove. The lifting part drives the docking part to rise until it abuts against the positioning plate, at which point the rising stops. The upper surface of the second docking part is then flush with the upper surface of the positioning plate. Since the upper surface of the positioning plate is pre-installed to be flush with the upper surface of the lower template, the upper surfaces of the lower template, the positioning plate, and the second docking part are at the same height. The mold can then be pushed onto the transport vehicle along the lower template and the positioning plate. The positioning plate fixes the endpoint of the lifting part, eliminating the need for repeated lifting and lowering to determine the height of the docking part, thus improving the efficiency and accuracy of height adjustment.

[0026] 4. The two first support plates and the fixed plate form an I-shaped positioning frame, which can be fixed to the ground by the first support plates. This helps to improve the load-bearing capacity of the positioning frame, adapt to different types of molds, and thus improve the stability of height adjustment.

[0027] 5. When installing the positioning frame, the height of the positioning plate can be adjusted by controlling the depth of the screw inserted into the first support plate to adapt to the height difference caused by uneven factory floor, and to ensure that the upper surface of the positioning plate is flush with the upper surface of the lower template.

[0028] 6. The lifting unit is raised or lowered relative to the positioning frame by the expansion and contraction of the air bag. The lifting accuracy is high and it is suitable for small height differences caused by uneven base plates.

[0029] 7. The mold changing device is equipped with a detector and a controller. When the detector detects the block, it indicates that the transport vehicle and the positioning structure have been docked. Then, the controller controls the driver to start lifting and lowering according to the detection result of the detector until the docking part abuts against the positioning plate. This realizes the automatic adjustment of the height of the lifting part, which helps to improve the mold changing efficiency.

[0030] 8. The detector can move along the length of the detection mounting groove, making it easier for the detector to detect the docking parts at different locations.

[0031] 9. The guide plate and left and right positioning blocks are used to limit the left and right positions of the positioning structure and the transport vehicle. When the guide plate is inserted between the two left and right positioning blocks, the locking block can be inserted into the groove.

[0032] 10. When the operating lever is in the first position, the first washer abuts against the limiting mounting block, limiting the farthest position of the first washer relative to the front limiting block. When the operating lever is in the second position, the first washer compresses the second elastic element, limiting the closest position of the first washer relative to the front limiting block. Therefore, when the operating lever is in the first position, external force is required to push the operating lever to compress the second elastic element before the operating lever can switch to the second position. Furthermore, as soon as the external force on the operating lever is removed, the operating lever automatically resets under the rebound force of the second elastic element. The front limiting assembly is safe and reliable, preventing accidental contact that could cause the mold to slip. Simultaneously, when the locking block is fully inserted into the groove, the positioning plate simultaneously moves the operating lever, lowering the front limiting block below the mold's receiving surface, allowing the mold to move between the mold frame and the transport vehicle. When the locking block disengages from the groove, the second elastic element drives the operating lever to reset, raising the front limiting block above the mold's receiving surface, locking the mold onto the transport vehicle. No manual operation is required; the front limiting assembly achieves automated state switching, ensuring both the safety of mold movement and improving mold changing efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the mold changing device in this invention.

[0034] Figure 2 This is a side view of the mold changing device in this invention.

[0035] Figure 3 This is a schematic diagram of the transport vehicle in this invention.

[0036] Figure 4 This is an exploded view of the transport vehicle in this invention.

[0037] Figure 5 This is a schematic diagram of the front limiting component in this invention.

[0038] Figure 6 This is an exploded view of the front limiting component in this invention.

[0039] Figure 7 This is a cross-sectional view of the front limiting component in this invention.

[0040] Figure 8 This is a schematic diagram of the mold locking assembly in this invention.

[0041] Figure 9 This is an exploded view of the mold locking assembly in this invention.

[0042] Figure 10 This is a cross-sectional view of the mold locking assembly in this invention.

[0043] Figure 11 This is a schematic diagram of the rear limiting component in this invention.

[0044] Figure 12This is the front view of the positioning structure in this invention.

[0045] Figure 13 This is an exploded view of the positioning structure in this invention.

[0046] Figure 14 This is a cross-sectional view of the positioning structure in this invention.

[0047] Reference numerals: 100, mold changing device; 10, transport vehicle; 11, vehicle body; 111, docking part; 112, mold support component; 1121, second support plate; 113, roller; 114, groove; 12, front limit assembly; 121, operating lever; 122, front limit block; 123, connecting rod; 124, limit pivot; 125, limit mounting block; 126, first gasket; 127, second elastic element; 13, mold locking assembly; 131, locking pin; 132, handle; 133, locking seat; 1331, horizontal mounting plate; 1332, vertical mounting plate; 1333, pin limit hole; 134, locking pivot; 135, second gasket; 136, third elastic element; 137, pin connecting shaft; 13 8. Pin limiting block; 139. Pin connecting block; 14. Guide plate; 15. Vehicle body limiting assembly; 16. Rear limiting assembly; 161. Buffer rubber; 162. Adjusting rod; 163. Rear limiting plate; 17. Side limiting assembly; 18. Handle; 19. Caster wheel; 20. Positioning structure; 21. Positioning frame; 211. Positioning plate; 212. First elastic element; 213. First support plate; 214. Fixing plate; 215. Screw; 216. Positioning plate limiting part; 22. Lifting part; 221. Locking block; 23. Driver; 231. Air bag; 24. Detector; 25. Left and right positioning blocks; 26. Lifting guide plate; 27. Protective plate; 28. Detection mounting plate; 30. Mold; 40. Mold frame; 41. Lower template. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0049] The mold changing device 100 in some embodiments will now be described in detail with reference to the accompanying drawings.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 12 As shown, in one embodiment, a mold changing device 100 is provided, including a transport vehicle 10 and a positioning structure 20;

[0051] The transport vehicle 10 is used to transport the mold 30; the positioning structure 20 includes a positioning frame 21 and a lifting part 22. The positioning frame 21 is used to connect with the lower template 41 of the mold frame 40. The lifting part 22 is movably mounted on the positioning frame 21. The transport vehicle 10 is provided with a docking part 111, which is detachably connected to the lifting part 22.

[0052] In the mold changing device 100 of the present invention, during use, the docking part 111 of the transport vehicle 10 is first connected to the lifting part 22 of the positioning structure 20, and then the relative position of the lifting part 22 and the positioning frame 21 is adjusted so that the height of the docking part 111 is consistent with the height of the lower template 41 of the mold frame 40. Since the positioning frame 21 is connected to the mold frame 40, the mold 30 can be pushed onto the transport vehicle 10 along the lower template 41 of the mold frame 40 and the positioning frame 21. Then the connection between the docking part 111 and the lifting part 22 is disconnected, and the mold 30 is transported to another mold frame 40 by the transport vehicle 10. The docking part 111 and the lifting part 22 are reconnected, and the mold 30 is transported onto the lower template 41 of the mold frame 40 along the docking part 111 and the positioning frame 21 of the transport vehicle 10, thus completing the mold changing operation of the mold 30. The mold changing device 100 is connected to the mold frame 40 through the positioning structure 20, which determines the position and height of the lower template 41 of the mold frame 40. A lifting part 22 is provided, which drives the docking part 111 of the transport vehicle 10 to move and adjusts the height of the docking part 111, so that one side of the transport vehicle 10 is raised. There is no height difference in the movement of the mold 30 between the mold frame 40 and the transport vehicle 10, which improves the safety and efficiency of mold changing.

[0053] Specifically, such as Figure 3 , Figure 12 and Figure 13 As shown, in one embodiment, the lifting part 22 is provided with a locking block 221, and the docking part 111 is provided with a groove 114, into which the locking block 221 can be inserted. The lifting part 22 and the docking part 111 are connected by the locking block 221 and the groove 114, so the lifting part 22 can drive the docking part 111 to be raised or lowered, preventing the docking part 111 from sliding on the lifting part 22, and the connection and disassembly efficiency is high.

[0054] Furthermore, such as Figure 1 , Figure 6 and Figure 12As shown, in one embodiment, the positioning frame 21 includes a positioning plate 211, the upper end surface of which is flush with the upper end surface of the lower template 41. A locking block 221 is disposed between the lifting part 22 and the positioning plate 211. The docking part 111 is stepped and includes a first docking part and a second docking part that are connected to each other. The upper end surface of the second docking part is higher than the upper end surface of the first docking part. The first docking part extends between the lifting part 22 and the positioning plate 211. When the positioning plate 211 and the lifting part 22 clamp the first docking part, the upper end surface of the second docking part is flush with the upper end surface of the positioning plate 211. Therefore, when the docking part 111 connects with the lifting part 22, the first docking part extends between the lifting part 22 and the positioning plate 211, and the locking block 221 extends into the groove 114. The lifting part 22 drives the docking part 111 to rise until the docking part 111 abuts against the positioning plate 211, at which point the rising stops. The upper surface of the second docking part is just flush with the upper surface of the positioning plate 211. Since the upper surface of the positioning plate 211 has been pre-installed to be flush with the upper surface of the lower template 41, the upper surface of the lower template 41, the upper surface of the positioning plate 211, and the upper surface of the second docking part are at the same height. The mold 30 can be pushed onto the transport vehicle 10 along the lower template 41 and the positioning plate 211. The positioning plate 211 fixes the end point of the lifting part 22, eliminating the need for repeated lifting and lowering to determine the height of the docking part 111, thus improving the efficiency and accuracy of height adjustment.

[0055] A first elastic element 212 is provided between the positioning plate 211 and the lifting part 22. The first elastic element 212 provides a buffering force between the positioning plate 211 and the lifting part 22 to prevent damage to the positioning plate 211 due to excessive lifting amplitude.

[0056] At the same time, such as Figure 12 , Figure 13 and Figure 14 As shown, in one embodiment, the positioning frame 21 includes two first support plates 213 and a fixed plate 214. Both ends of the fixed plate 214 are connected to the first support plates 213. A lifting part 22 is disposed between the positioning plate 211 and the fixed plate 214. A driver 23 is provided between the positioning plate 211 and the fixed plate 214, and the driver 23 is used to drive the lifting part 22 to move up and down relative to the fixed plate 214. To fix the position of the positioning frame 21, the two first support plates 213 can be fixedly connected to the ground with screws, so that the positioning frame 21 and the mold frame 40 maintain a constant relative position. Therefore, the lower template 41 can be overlapped on the clearance groove of the positioning plate 211 via a sliding rail, achieving that the upper end surface of the lower template 41 is flush with the upper end surface of the positioning plate 211. The two first support plates 213 and the fixed plate 214 form an I-shaped positioning frame 21, which is fixed to the ground by the first support plates 213. This improves the load-bearing capacity of the positioning frame 21, adapts to different types of molds 30, and thus improves the stability of height adjustment.

[0057] Furthermore, in one embodiment, the positioning frame 21 is provided with multiple screws 215, and each screw 215 has a positioning plate limiting part 216. Both ends of the positioning plate 211 are connected to the first support plate 213, and the screws 215 pass through the positioning plate 211 and are threadedly connected to the first support plate 213. The positioning plate limiting part 216 is located between the positioning plate 211 and the first support plate 213. Therefore, when installing the positioning frame 21, the height of the positioning plate 211 can be adjusted by controlling the depth of the screws 215 inserted into the first support plate 213, adapting to the height difference caused by uneven factory floors, and ensuring that the upper surface of the positioning plate 211 is flush with the upper surface of the lower template 41.

[0058] Continue to refer to Figure 13 and Figure 14 The actuator 23 includes an air bag 231 and a flow valve. The air bag 231 is located between the lifting unit 22 and the fixed plate 214. The air bag 231 is connected to an air source through the flow valve. The air inlet pipe of the air bag 231 passes through the fixed plate 214 and is connected to the air source. The air inlet pipe is equipped with a flow valve. The lifting unit 22 is raised or lowered relative to the positioning frame 21 by the expansion and contraction of the air bag 231. The lifting accuracy is high, and it is suitable for small height differences caused by uneven floors.

[0059] Furthermore, such as Figure 12 , Figure 13 and Figure 14 As shown, in one embodiment, a detector 24 is provided on the positioning frame 21, which is positioned opposite the locking block 221 to detect the docking part 111. The mold changing device 100 also includes a controller, which is electrically connected to the detector 24 and the driver 23. When the detector 24 detects the docking part 111, the controller controls the driver 23 to start. Through the detector 24 and the controller, after the transport vehicle 10 docks with the positioning structure 20, it automatically begins to rise and fall until the docking part 111 abuts against the positioning plate 211, realizing automated height adjustment, which is beneficial to improving mold changing efficiency. In this specific embodiment, the controller is electrically connected to the flow valve to control the air intake speed and air intake volume of the air bag 231, and to control the expansion speed and height of the air bag 231.

[0060] The positioning frame 21 is provided with a detection mounting plate 28, which is provided with a long strip-shaped detection mounting groove. The detector 24 is located in the detection mounting groove and can move along the length direction of the detection mounting groove. The length direction of the detection mounting groove is the same as the insertion direction of the docking part 111, which makes it easier for the detector 24 to detect docking parts 111 with different insertion depths.

[0061] like Figure 12As shown, in this specific embodiment, the positioning structure 20 further includes a lifting guide plate 26. The lifting guide plate 26 is disposed on both sides of the positioning frame 21. The lifting guide plate 26 is provided with a lifting guide hole. One end of the lifting guide plate 26 is connected to the fixing plate 214, and the other end of the lifting guide plate 26 is connected to the lifting part 22 by a screw. The screw passes through the lifting guide hole and is connected to the lifting part 22. The screw moves up and down with the lifting part 22 in the lifting guide hole to limit the up and down position of the lifting part 22.

[0062] The positioning structure 20 also includes a protective plate 27, which is located on the side of the positioning frame 21 away from the transport vehicle 10, and is used to prevent injection molding liquid from damaging the positioning structure 20.

[0063] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 12 As shown, in one embodiment, the transport vehicle 10 is provided with a guide plate 14, and the positioning frame 21 has left and right positioning blocks 25 on both sides. The guide plate 14 can be inserted between the two left and right positioning blocks 25, so that the two sides of the guide plate 14 abut against the sides of the left and right positioning blocks 25 respectively. The guide plate 14 and the left and right positioning blocks 25 are used to limit the left and right positions of the positioning structure 20 and the transport vehicle 10. When the guide plate 14 is inserted between the two left and right positioning blocks 25, the locking block 221 can be inserted into the groove 114.

[0064] Specifically, such as Figure 5 , Figure 6 and Figure 7 As shown, in one embodiment, the transport vehicle 10 is provided with a front limiting component 12, which includes an operating lever 121 and a front limiting block 122. The operating lever 121 is connected to the front limiting block 122 and is movably connected to the transport vehicle 10. When the operating lever 121 is in a first position, the front limiting block 122 protrudes from the mold bearing surface of the transport vehicle 10, thereby limiting the front end position of the mold 30. When the operating lever 121 is in a second position, the front limiting block 122 is lower than the mold bearing surface of the transport vehicle 10. Therefore, the state of the front limiting component 12 can be adjusted. When the operating lever 121 is in the first position, the front limiting component 12 is in a limiting state, which can limit the mold 30 from moving from the mold frame 40 to the transport vehicle 10, or limit the mold 30 from moving from the transport vehicle 10 to the mold frame 40, thereby preventing the mold 30 from slipping when the transport vehicle 10 moves and improving the safety of the transport vehicle 10 in transporting the mold 30.

[0065] Further, in one embodiment, the front limiting assembly 12 includes a connecting rod 123 and a limiting rotating shaft 124. The two ends of the connecting rod 123 are respectively connected to the operating rod 121 and the limiting rotating shaft 124. The limiting rotating shaft 124 is connected to the front limiting block 122. The operating rod 121 moves relative to the transport vehicle 10, causing the limiting rotating shaft 124 to rotate around its axis. The operating rod 121 moves horizontally relative to the transport vehicle 10, causing the limiting rotating shaft 124 to rotate around its own axis. The limiting rotating shaft 124 then causes the front limiting block 122 to be lower or higher than the mold bearing surface of the transport vehicle 10. The operating rod 121 is connected to the connecting rod 123 via a connecting shaft.

[0066] Furthermore, in one embodiment, the transport vehicle 10 is provided with two limiting mounting blocks 125. An operating lever 121 movably passes through the limiting mounting blocks 125 and connects to a front limiting block 122. A first gasket 126 is provided on the operating lever 121 at a position between the two limiting mounting blocks 125. A second elastic member 127 is provided between the first gasket 126 and the limiting mounting blocks 125. The first gasket 126 is located on the side of the second elastic member 127 away from the front limiting block 122. When the operating lever 121 is in the second position, the second elastic member 127 is in a compressed state. When the operating lever 121 is in the first position, the first gasket 126 abuts against the limiting mounting blocks 125, limiting the farthest position of the first gasket 126 relative to the front limiting block 122. When the operating lever 121 is in the second position, the first gasket 126 compresses the second elastic member 127, limiting the closest position of the first gasket 126 relative to the front limiting block 122. Therefore, when the operating lever 121 is in the first position, an external force is required to push the operating lever 121 to compress the second elastic element 127 so that the operating lever 121 can switch to the second position. Moreover, as long as the external force on the operating lever 121 is removed, the operating lever 121 can automatically reset under the rebound force of the second elastic element 127. The front limit component 12 is safe and reliable, avoiding accidental contact that could cause the mold 30 to slip.

[0067] In this specific embodiment, the front limiting component 12 is disposed on the side of the mold support 112 and installed at the same height as the positioning plate 211. When the groove 114 of the docking part 111 is connected to the locking block 221 of the lifting part 22, the operating rod 121 of the front limiting component 12 abuts against the positioning plate 211. The positioning plate 211 pushes the operating rod 121 to move, so that the front limiting block 122 is lower than the bearing surface of the mold 30. Therefore, when the locking block 221 is fully inserted into the groove 114, the positioning plate 211 simultaneously drives the operating rod 121 to move, so that the front limiting block 122 is lower than the bearing surface of the mold, and the mold 30 can move between the mold frame 40 and the transport vehicle 10. When the locking block 221 disengages from the groove 114, the second elastic element 127 drives the operating rod 121 to reset, so that the front limiting block 122 is higher than the bearing surface of the mold, and the mold 30 is locked on the transport vehicle 10. Without the need for manual operation, the front limit component 12 achieves automated state switching, which not only ensures the safety of mold 30 movement but also improves mold changing efficiency.

[0068] Specifically, such as Figure 8 , Figure 9 and Figure 10 As shown, in one embodiment, the transport vehicle 10 is provided with a mold locking assembly 13. The mold locking assembly 13 includes a locking pin 131, a handle 132, and a locking seat 133. The locking pin 131 is perpendicular to the mold bearing surface of the transport vehicle 10 and can be inserted into the locking hole of the mold 30. The handle 132 is movably connected to the locking seat 133 and connected to the locking pin 131. When the handle 132 is in the first position, the locking pin 131 protrudes from the mold bearing surface of the transport vehicle 10. When the handle 132 is in the second position, the locking pin 131 is lower than the mold bearing surface of the transport vehicle 10.

[0069] Furthermore, the axis of the handle 132 is connected at an angle to the axis of the locking pin 131. The handle 132 is rotatably connected to the locking seat 133 through the locking shaft 134. The handle 132 rotates around the axis of the locking shaft 134 to drive the locking pin 131 to move along its own axis. The locking pin 131 is provided with a second washer 135. A third elastic element 136 is provided between the second washer 135 and the handle 132. When the locking pin 131 is lower than the mold bearing surface of the transport vehicle 10, the third elastic element 136 is compressed.

[0070] The locking seat 133 includes a horizontal mounting plate 1331 and two vertical mounting plates 1332. The horizontal mounting plate 1331 is connected to the transport vehicle 10. The two vertical mounting plates 1332 are arranged opposite to each other and are respectively connected to the two ends of the horizontal mounting plate 1331. The handle 132 and the locking pin 131 are arranged between the two vertical mounting plates 1332. The locking shaft 134 passes through one vertical mounting plate 1332 and the handle 132 in sequence and is connected to the other vertical mounting plate 1332.

[0071] Furthermore, the handle 132 and the locking pin 131 are connected by a pin connecting shaft 137. One end of the handle 132 is provided with a pin connecting U-shaped groove, and one end of the locking pin 131 is located in the pin connecting U-shaped groove. The two vertical mounting plates 1332 are provided with elongated pin limiting holes 1333. The pin connecting shaft 137 passes through the pin limiting hole 1333, the side wall of the pin connecting U-shaped groove, the locking pin 131, the side wall of the pin connecting U-shaped groove, and the pin limiting hole 1333 in sequence. When the handle 132 rotates relative to the locking seat 133, it drives the pin connecting shaft 137 to move up and down in the pin connecting U-shaped groove, thereby driving the locking pin 131 to move up and down, which is used to limit the up and down movement position of the locking pin 131.

[0072] In this specific embodiment, the locking seat 133 further includes a pin connecting block 139 and a pin limiting block 138. Both the pin connecting block 139 and the pin limiting block 138 are movably sleeved on the locking pin 131. The pin connecting block 139 has plate connecting portions at both ends, which are connected to the vertical mounting plate 1332. The pin limiting block 138 is also connected to the vertical mounting plate 1332 and is located between the second washer 135 and the plate connecting portion. When the handle 132 is in the first position, the second washer 135 abuts against the pin limiting block 138 to further limit the highest position of the locking pin 131. When the handle 132 is in the second position, the second washer 135 compresses the third elastic member 136.

[0073] Therefore, external force can compress the third elastic element 136 by rotating the handle 132 or pushing the locking pin 131, causing the locking pin 131 to be lower than the mold bearing surface of the transport vehicle 10. After the external force is removed, the rebound force of the third elastic element 136 causes the handle 132 and the locking pin 131 to automatically reset. The handle 132 returns to the first position, and the locking pin 131 is higher than the mold bearing surface of the transport vehicle 10. During use, pushing the mold 30 close to the mold locking assembly 13 causes the locking pin 131 to be higher than the mold bearing surface. The bottom surface of the mold 30 abuts against the locking pin 131, pushing the locking pin 131 downward compresses the third elastic element 136 until the locking pin 131 enters the locking hole area of ​​the mold 30. The third elastic element 136 resets, and the locking pin 131 moves upward and inserts into the locking hole, completing the locking of the mold 30. Afterward, rotating the handle 132 causes the locking pin 131 to be lower than the mold bearing surface, pushing the mold 30 away from the mold locking assembly 13, thus unlocking the mold 30.

[0074] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 12As shown, in one embodiment, the transport vehicle 10 includes a vehicle body 11 and a mold support member 112. The mold support member 112 is disposed on the vehicle body 11, and the upper end surface of the mold support member 112 forms a mold bearing surface. The mold support member 112 includes two opposing second support plates 1121. A certain distance is provided between the two second support plates 1121 to form an installation groove. A plurality of rollers 113 are provided in the installation groove, and the rollers 113 are used to abut against the mold 30.

[0075] The docking part 111 is connected to the mold support 112, and the upper end surface of the second docking part is flush with the mold bearing surface. The docking part 111 includes two docking plates connected to the second support plate 1121, and a certain distance is provided between the docking plates to form a groove 114.

[0076] Furthermore, the vehicle body 11 is provided with two mold support members 112 arranged side by side, and the mold locking component 13 is located between the two mold support members 112. Each mold support member 112 is provided with a front limit component 12 and a vehicle body limit component 15.

[0077] Specifically, such as Figure 3 and Figure 4 As shown, in one embodiment, the vehicle body 11 is provided with a rear limiting component 16 and a plurality of side limiting components 17. The rear limiting component 16 is located on the rear side of the mold 30 and is used to limit the rear end position of the mold 30. The plurality of side limiting components 17 are distributed on both sides of the mold 30 and are used to limit the positions of both sides of the mold 30.

[0078] The rear limiting assembly 16 includes a rear limiting plate 163, an adjusting rod 162, and a buffer rubber 161. The rear limiting plate 163 is connected to the vehicle body 11, and the adjusting rod 162 is threadedly connected to the rear limiting plate 163. One end of the adjusting rod 162 is provided with the buffer rubber 161 for abutting against the mold 30, and the other end of the adjusting rod 162 passes through the rear limiting plate 163 and is connected to a nut. Therefore, the rear limiting assembly 16 can adjust the distance between the rear limiting assembly 16 and the front limiting assembly 12 through the adjusting rod 162, thereby adapting to different mold 30 sizes.

[0079] Furthermore, the side limiting assembly 17 includes a side limiting seat and a side limiting post. The side limiting seat is connected to the vehicle body 11, and the side limiting post is located on the upper end face of the side limiting seat. The circumferential surface of the side limiting post is used to abut against both sides of the mold 30.

[0080] Specifically, such as Figure 3 and Figure 4As shown, in one embodiment, a vehicle body limiting component 15 is provided on the vehicle body 11. The vehicle body limiting component 15 is used to abut against the positioning frame 21 to limit the relative position between the transport vehicle 10 and the positioning frame 21. The structure of the vehicle body limiting component 15 is the same as that of the rear limiting component 16, including a vehicle body limiting plate, an adjusting rod 162, and a buffer rubber 161. The vehicle body limiting plate is connected to the vehicle body 11, and the adjusting rod 162 is threadedly connected to the vehicle body limiting plate. One end of the adjusting rod 162 is provided with a buffer rubber 161 for abutting against the positioning frame 21, and the other end of the adjusting rod 162 passes through the vehicle body limiting plate and is connected to a nut. The vehicle body limiting component 15 can adjust the distance between the transport vehicle 10 and the positioning frame 21, thereby adjusting the retraction distance of the operating rod 121 of the front limiting component 12.

[0081] Specifically, such as Figure 3 and Figure 4 As shown, in one embodiment, the vehicle body 11 is provided with handles 18 on both sides and casters 19 at the bottom.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0087] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A mold changing device, characterized in that, include: Transport vehicle (10), the transport vehicle (10) is used to transport mold (30); The positioning structure (20) includes a positioning frame (21) and a lifting part (22). The positioning frame (21) is connected to the lower template (41) of the mold frame (40). The lifting part (22) is movably mounted on the positioning frame (21). The transport vehicle (10) is provided with a docking part (111). The docking part (111) is detachably connected to the lifting part (22). The lifting part (22) is provided with a locking block (221), and the docking part (111) is provided with a groove (114). The locking block (221) can be inserted into the groove (114). The positioning frame (21) is provided with a detector (24) and a driver (23). The detector (24) is arranged opposite to the locking block (221) and is used to detect the docking part (111). The driver (23) is connected to the lifting part (22) and is used to drive the lifting part (22) to rise and fall relative to the positioning frame (21). The mold changing device (100) also includes a controller. The controller is electrically connected to the detector (24) and the driver (23) respectively. When the detector (24) detects the docking part (111), the controller controls the driver (23) to start. The positioning frame (21) includes a positioning plate (211), the upper surface of which is flush with the upper surface of the lower template (41). The locking block (221) is located between the lifting part (22) and the positioning plate (211). The docking part (111) is stepped. The docking part (111) includes a first docking part and a second docking part that are connected to each other. The upper surface of the second docking part is higher than the upper surface of the first docking part. The first docking part can extend between the lifting part (22) and the positioning plate (211). When the first docking part abuts against the positioning plate (211), the upper surface of the second docking part is flush with the upper surface of the positioning plate (211).

2. The mold changing device according to claim 1, characterized in that, The positioning frame (21) is provided with a detection mounting plate (28), the detection mounting plate (28) is provided with a long strip-shaped detection mounting groove, the detector (24) is located in the detection mounting groove and can move along the length direction of the detection mounting groove, the length direction of the detection mounting groove is the same as the insertion direction of the docking part (111).

3. The mold changing device according to claim 1, characterized in that, The positioning frame (21) includes two first support plates (213) and a fixing plate (214). The two ends of the fixing plate (214) are respectively connected to the first support plates (213). The lifting part (22) is located between the positioning plate (211) and the fixing plate (214). The driver (23) is located between the positioning plate (211) and the fixing plate (214).

4. A mold changing device according to claim 3, characterized in that, The two ends of the positioning plate (211) are respectively connected to the first support plate (213). The positioning frame (21) is provided with a plurality of screws (215). The screws (215) pass through the positioning plate (211) and are threadedly connected to the first support plate (213). The screws (215) are provided with a positioning plate limiting part (216). The positioning plate limiting part (216) is located between the positioning plate (211) and the first support plate (213).

5. A mold changing device according to claim 4, characterized in that, The driver (23) includes an air bag (231) and a flow valve. The air bag (231) is located between the lifting part (22) and the fixed plate (214). The air inlet pipe of the air bag (231) passes through the fixed plate (214) and is connected to the air source. The flow valve is located on the air inlet pipe.

6. A mold changing device according to claim 1, characterized in that, The mold changing vehicle is provided with a guide plate (14), and the positioning frame (21) is provided with left and right positioning blocks (25) on both sides. The guide plate (14) can be inserted between the two left and right positioning blocks (25), so that the two sides of the guide plate (14) abut against the sides of the left and right positioning blocks (25) respectively.

7. A mold changing device according to claim 1, characterized in that, The transport vehicle (10) is provided with a front limiting component (12), which includes an operating lever (121) and a front limiting block (122). The front limiting block (122) is connected to the operating lever (121), and the operating lever (121) is movably connected to the transport vehicle (10). When the operating lever (121) is in the first position, the front limiting block (122) protrudes from the mold bearing surface of the transport vehicle (10) to limit the front end position of the mold (30). When the operating lever (121) is in the second position, the front limiting block (122) is lower than the mold bearing surface of the transport vehicle (10).

8. A mold changing device according to claim 7, characterized in that, The transport vehicle (10) is provided with two limiting mounting blocks (125). The operating lever (121) moves through the limiting mounting blocks (125) and connects to the front limiting block (122). The operating lever (121) is provided with a first gasket (126). A second elastic member (127) is provided between the first gasket (126) and the limiting mounting blocks (125). The first gasket (126) is located between the two limiting mounting blocks (125) and is located on the side of the second elastic member (127) away from the front limiting block (122). When the operating lever (121) is in the second position, the second elastic member (127) is in a compressed state.

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