A lifting mechanism for mold changing in a hot pressing edge banding equipment

Abstract

This utility model discloses a lifting mechanism for mold changing in a hot-pressing edge-wrapping equipment, comprising a base, a column frame, a support platform, a lifting assembly, and various optimized structures. The support platform can be raised and lowered, and the lifting assembly, in conjunction with a hydraulic push rod, assists in the raising and lowering process; the dual-drive mode improves stability and efficiency. The top of the support platform is equipped with a positioning pin and an elastic buffer pad to ensure mold installation accuracy; buffer blocks and buffer springs enhance safety. Photoelectric sensors and a controller improve operational accuracy, while a protective cover and lubrication device ensure equipment durability. This application can significantly shorten mold changing time, improve equipment stability and safety, and meet the needs of high-efficiency production.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a lifting mechanism for changing molds in a hot pressing edge-wrapping equipment. Background Technology

[0002] In automobile manufacturing, hot pressing edge banding equipment is widely used in the molding and processing of parts such as car doors and hoods. For this type of equipment, mold changing is a crucial step in ensuring production flexibility and efficiency, as it requires rapid mold replacement to adapt to diverse production needs for different product models. Because molds typically have significant weight and complex structures, the lifting operation during mold changing is particularly critical. Existing lifting mechanisms mostly use hydraulic or mechanical drives to raise and lower the mold. However, in practical applications, these mechanisms often suffer from design limitations leading to long mold changing times and high operational precision requirements. Furthermore, existing lifting mechanisms may experience positioning inaccuracies during operation, which not only affects mold changing efficiency but may also impact the stability and safety of the equipment. Therefore, a more efficient and reliable solution is urgently needed. Utility Model Content

[0003] The purpose of this utility model is to provide a lifting mechanism for changing molds in a hot pressing edge-wrapping device, which solves the problems mentioned in the background art.

[0004] This utility model is implemented as follows: a lifting mechanism for changing molds in a hot-pressing edge-wrapping equipment, comprising a base, on which a column frame is fixedly mounted, characterized in that it further comprises:

[0005] The top of the support platform is an open structure. A horizontally arranged crossbeam is fixedly connected to the top of the column frame. The two ends of the crossbeam are fixedly connected to the column frame by bolts. A guide groove penetrating the thickness of the crossbeam is opened in the middle of the crossbeam. A slider is slidably arranged in the guide groove. A rack is fixedly connected to the bottom of the slider. A motor is fixedly installed on the lower side of the crossbeam. A gear is fixedly connected to the output shaft of the motor. The gear meshes with the rack for transmission. A lifting hydraulic rod is fixedly connected to the top of the slider by a threaded connection. The top of the lifting hydraulic rod is connected to the bottom center of the support platform by a hinge.

[0006] A lifting assembly; the lifting assembly is located below the support platform and includes a support frame fixedly mounted on the base. A horizontally arranged guide rail is fixedly connected to the top of the support frame. Both ends of the guide rail are fixedly connected to the support frame by bolts. Two slide blocks are slidably mounted on the guide rail and are connected by a connecting rod. A nut is fixedly connected to the middle of the connecting rod. A hydraulic push rod is hinged to the top of the slide block, and the other end of the hydraulic push rod is connected to the bottom edge of the support platform by a hinge.

[0007] Preferably, the top of the bearing platform is fixedly connected with multiple positioning pins, which are evenly distributed along the length of the bearing platform. The top of the positioning pin is provided with a conical guide head, and the outer surface of the conical guide head is coated with a wear-resistant coating. The top of the bearing platform is also provided with multiple through holes, and an elastic buffer pad is fixedly installed in the through holes. The top of the elastic buffer pad is flush with the bottom of the positioning pin.

[0008] Preferably, a rectangular buffer block is fixedly installed on the column frame, and the two ends of the buffer block are fixedly connected to the column frame by bolts. A buffer spring is fixedly installed on the top of the buffer block.

[0009] Preferably, a photoelectric sensor is fixedly connected to the bottom of the slider, with the detection end of the photoelectric sensor facing the tooth surface of the rack. The photoelectric sensor is electrically connected to a controller fixedly installed on one side of the crossbeam via a signal line. The controller is electrically connected to the motor via a signal line, and the controller controls the start and stop of the motor according to the detection signal of the photoelectric sensor.

[0010] Preferably, a protective cover is fixedly connected to the top of the support frame, and the two sides of the protective cover are fixedly connected to the support frame by bolts. The top of the protective cover has multiple heat dissipation holes, and a dustproof net is fixedly installed inside the heat dissipation holes. A lubrication device is fixedly installed inside the protective cover, and the oil outlet of the lubrication device is connected to the surface of the lead screw through a pipe.

[0011] Preferably, the bottom of the bearing platform is fixedly connected with multiple reinforcing ribs, which are evenly distributed along the length of the bearing platform. The two ends of the reinforcing ribs are fixedly connected to the bottom of the bearing platform by bolts. The top of the reinforcing ribs is fixedly connected with a shock-absorbing pad, which is flush with the bottom of the bearing platform.

[0012] The lifting mechanism provided by this utility model for changing molds in a hot pressing edge-wrapping equipment has the following advantages:

[0013] This invention utilizes a motor-driven gear and rack meshing transmission to allow a slider to slide within a guide groove on a crossbeam. This, combined with the up-and-down movement of a lifting hydraulic rod, enables the lifting function of the support platform. Simultaneously, a hydraulic push rod pushes the edge of the support platform for auxiliary lifting. This dual-drive mode not only improves the stability of the lifting process but also significantly shortens mold-changing time. Furthermore, the positioning pins and elastic buffer pads on the top of the support platform effectively improve the mold installation accuracy, while the design of the buffer blocks and buffer springs ensures the safety and reliability of the support platform during lifting. In summary, this invention, through optimized structural design of the lifting mechanism, improves mold-changing efficiency while enhancing the stability and safety of the equipment. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a partially exploded enlarged view of the column frame of this utility model.

[0016] Figure 3 This is a schematic diagram of the lifting component structure of this utility model.

[0017] The attached figures are labeled as follows:

[0018] 1. Base; 2. Column frame; 3. Load-bearing platform; 4. Crossbeam; 5. Slider; 6. Rack; 7. Motor; 8. Gear; 9. Lifting hydraulic rod; 11. Support frame; 12. Guide rail; 13. Slide seat; 14. Connecting rod; 15. Nut; 17. Hydraulic push rod; 19. Positioning pin; 20. Buffer block; 22. Buffer spring. Detailed Implementation

[0019] This utility model provides a lifting mechanism for mold changing in a hot pressing edge-wrapping equipment, the specific implementation of which is described in conjunction with the attached drawing. Figure 1 To be continued Figure 3 Please provide a detailed explanation. For example... Figure 1-3 As shown, the lifting mechanism mainly includes a base 1, a column frame 2, a bearing platform 3, a crossbeam 4, a slider 5, a rack 6, a motor 7, a gear 8, a lifting hydraulic rod 9, a guide wheel 10, a support frame 11, a guide rail 12, a slide block 13, a connecting rod 14, a nut 15, a lead screw 16, a hydraulic push rod 17, a stepper motor 18, a positioning pin 19, a buffer block 20, a limit block 21, and a buffer spring 22. These components work together through specific connections and cooperative mechanisms to achieve efficient lifting and precise positioning of the mold.

[0020] The base 1 is the fundamental component of the entire lifting mechanism. Two symmetrically arranged uprights 2 are fixedly connected to its top. A transverse beam 4 is bolted to the upper end of each upright. A guide groove penetrating the thickness of the beam 4 is cut into its middle. A slider 5 slides within the guide groove, and a rack 6 is fixed to the bottom of the slider 5 by welding or bolting. A motor 7 is fixedly mounted on the lower side of the beam 4. A gear 8 is keyed to the output shaft of the motor 7, and the gear 8 meshes with the rack 6. A lifting hydraulic rod 9 is threaded to the top of the slider 5, and the top of the lifting hydraulic rod 9 is hinged to the center of the bottom of the support platform 3.

[0021] like Figure 2As shown, a limit block 21 is bolted to the outer wall of the support platform 3, and the limit block 21 is embedded in a buffer block 20 on the inner wall of the column frame 2. A buffer spring 22 is bolted to the bottom of the buffer block 20 to absorb the impact force generated when the support platform 3 descends. In addition, multiple positioning pins 19 are fixedly connected to the top of the support platform 3. The positioning pins 19 are evenly distributed along the length of the support platform 3, and the top is provided with a tapered guide head to facilitate quick mold alignment. Through holes are opened around the positioning pins 19, and elastic buffer pads are fixed in the through holes. The top of the elastic buffer pads is flush with the bottom of the positioning pins 19 to reduce the impact and vibration during mold installation.

[0022] like Figure 3 As shown, the lifting assembly is located below the support platform 3 and includes a support frame 11 fixedly mounted on the base 1. A horizontally arranged guide rail 12 is bolted to the top of the support frame 11. Two slide blocks 13 are slidably mounted on the guide rail 12, connected by a connecting rod 14. A nut 15 is threadedly fixed to the middle of the connecting rod 14. A hydraulic push rod 17 is connected to the top of the slide block 13 and to the bottom of the support platform 3, thereby enabling the hydraulic push rod 17 to assist in lifting the support platform 3.

[0023] A photoelectric sensor is fixedly connected to the bottom of slider 5, with its detection end facing the tooth surface of rack 6. The photoelectric sensor is electrically connected to a controller fixed to one side of crossbeam 4 via a signal line. The controller controls the start and stop of motor 7 based on the detection signal from the photoelectric sensor, thereby achieving precise positioning of slider 5. A protective cover is bolted to the top of support frame 11, and both sides of the protective cover are fixedly connected to support frame 11 by bolts. Multiple heat dissipation holes are provided on the top of the protective cover, and dustproof meshes are fixed inside the heat dissipation holes. A lubrication device is fixed inside the protective cover, and the oil outlet of the lubrication device is connected to the surface of lead screw 16 through a pipe to ensure that lead screw 16 maintains good lubrication during long-term operation.

[0024] Multiple reinforcing ribs are bolted to the bottom of the load-bearing platform 3. The reinforcing ribs are evenly distributed along the length of the load-bearing platform 3, and both ends of the reinforcing ribs are fixed to the bottom of the load-bearing platform 3 by bolts. A vibration damping pad is fixed to the top of the reinforcing ribs. The top of the vibration damping pad is flush with the bottom of the load-bearing platform 3 to further improve the structural strength and vibration resistance of the load-bearing platform 3.

[0025] In practical applications, when mold replacement is required, the operator first places the mold to be replaced on top of the support platform 3 and performs initial positioning using the positioning pin 19. Then, the motor 7 is started, driving the gear 8 to rotate. The gear 8 meshes with the rack 6, causing the slider 5 to slide within the guide groove of the crossbeam 4. The movement of the slider 5 is transmitted to the support platform 3 via the lifting hydraulic rod 9, causing the support platform 3 to move horizontally along the inner wall of the column frame 2. Simultaneously, the lifting hydraulic rod 9 initially lifts the platform, while the hydraulic push rod 17 assists in lifting the edge of the support platform 3. Once the support platform 3 reaches the predetermined height, the photoelectric sensor detects the position of the slider 5 and sends a signal to the controller, which then stops the motor 7, completing the lifting operation.

[0026] During the descent of the support platform 3, the motor 7 rotates in the reverse direction, and the lifting hydraulic rod 9 drives the support platform 3 to descend accordingly. At the same time, the hydraulic push rod 17 pulls the edge of the support platform 3 downward. When the support platform 3 approaches the base 1, the limiting block 21 contacts the buffer spring 22, and the buffer spring 22 absorbs the impact force during the descent, preventing the support platform 3 from having a rigid collision with the base 1.

[0027] Through the above structural design and operating principle, this utility model achieves efficient lifting and precise positioning of the mold, meeting the high efficiency and high precision requirements of the hot pressing edge-wrapping equipment during mold changing, while ensuring the stability and safety of the equipment operation.

[0028] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model will be further explained below in conjunction with a specific application scenario.

[0029] In actual operation, when it is necessary to replace the mold of the hot pressing edge-wrapping equipment, the mold to be replaced is first hoisted to the top of the support platform 3. At this time, the support platform 3 is in its initial low position, and the multiple positioning pins 19 set on its top guide the mold to quickly align in position through the conical guide head. Since the positioning pins 19 have through holes around them and built-in elastic buffer pads, the elastic buffer pads can effectively absorb the impact force during the mold placement process, avoiding rigid collision between the mold and the support platform 3, thereby protecting the mold surface from damage.

[0030] When a mold needs to be replaced, the operator first places the mold to be replaced on top of the support platform 3 and initially positions it using the locating pin 19. Then, the motor 7 is started, driving the gear 8 to rotate. The gear 8 meshes with the rack 6, causing the slider 5 to slide within the guide groove of the crossbeam 4. The movement of the slider 5 is transmitted to the support platform 3 via the lifting hydraulic rod 9, causing the support platform 3 to move horizontally along the inner wall of the column frame 2. The lifting hydraulic rod 9 initially lifts the platform, while simultaneously, the hydraulic push rod 17 pushes the edge of the support platform 3 for auxiliary lifting. When the support platform 3 rises to the predetermined height, the photoelectric sensor detects the position of the slider 5 and sends a signal to the controller, which then stops the motor 7, completing the lifting operation.

[0031] During the descent of the support platform 3, the motor 7 rotates in the reverse direction, and the lifting hydraulic rod 9 drives the support platform 3 to descend accordingly. At the same time, the hydraulic push rod 17 pulls the edge of the support platform 3 downward. When the support platform 3 approaches the base 1, the limiting block 21 contacts the buffer spring 22, and the buffer spring 22 absorbs the impact force during the descent, preventing the support platform 3 from having a rigid collision with the base 1.

[0032] Furthermore, throughout the lifting and lowering process, the lubrication device inside the protective cover continuously supplies oil to the surface of the lead screw 16 through pipes, ensuring that the lead screw 16 maintains good lubrication during long-term operation, reducing wear and extending its service life. The reinforcing ribs fixed at the bottom of the bearing platform 3 and the shock-absorbing pads installed on its top further improve the structural strength and vibration resistance of the bearing platform 3, enabling it to withstand heavy molds without deformation or vibration.

[0033] By combining the above steps and principles, this utility model achieves efficient lifting and precise positioning of the mold, meeting the high efficiency and high precision requirements of the hot pressing edge-wrapping equipment during mold changing, while ensuring the stability and safety of the equipment operation.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting mechanism for changing molds in a hot pressing edge-sealing device, comprising a base (1), on which a column frame (2) is fixedly mounted, characterized in that, Also includes: The top of the support platform (3) is an open structure. The top of the column frame (2) is fixedly connected to a horizontally arranged crossbeam (4). The two ends of the crossbeam (4) are fixedly connected to the column frame (2) by bolts. The middle of the crossbeam (4) is provided with a guide groove that penetrates its thickness. A slider (5) is slidably arranged in the guide groove. A rack (6) is fixedly connected to the bottom of the slider (5). A motor (7) is fixedly installed on the lower side of the crossbeam (4). A gear (8) is fixedly connected to the output shaft of the motor (7). The gear (8) meshes with the rack (6) for transmission. A lifting hydraulic rod (9) is fixedly connected to the top of the slider (5) by a threaded connection. The top of the lifting hydraulic rod (9) is connected to the bottom center of the support platform (3) by a hinge. Lifting assembly; The lifting assembly is located below the bearing platform (3). The lifting assembly includes a support frame (11) fixedly mounted on the base (1). A horizontally arranged guide rail (12) is fixedly connected to the top of the support frame (11). The two ends of the guide rail (12) are fixedly connected to the support frame (11) by bolts. Two slide blocks (13) are slidably mounted on the guide rail (12). The two slide blocks (13) are connected by a connecting rod (14). A nut (15) is fixedly connected to the middle of the connecting rod (14). A hydraulic push rod (17) is hinged to the top of the slide block (13). The other end of the hydraulic push rod (17) is connected to the bottom edge of the bearing platform (3) by a hinge.

2. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, The top of the bearing platform (3) is fixedly connected with multiple positioning pins (19). The positioning pins (19) are evenly distributed along the length of the bearing platform (3). The top of the positioning pins (19) is provided with a conical guide head. The outer surface of the conical guide head is coated with a wear-resistant coating. The top of the bearing platform (3) is also provided with multiple through holes. An elastic buffer pad is fixedly installed in the through hole. The top of the elastic buffer pad is flush with the bottom of the positioning pin (19).

3. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, A rectangular buffer block (20) is fixedly installed on the upper part of the column frame (2). The two ends of the buffer block (20) are fixedly connected to the column frame (2) by bolts. A buffer spring (22) is fixedly installed on the top of the buffer block (20).

4. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, A photoelectric sensor is fixedly connected to the bottom of the slider (5). The detection end of the photoelectric sensor faces the tooth surface of the rack (6). The photoelectric sensor is electrically connected to a controller fixed on one side of the crossbeam (4) via a signal line. The controller is electrically connected to the motor (7) via a signal line. The controller controls the start and stop of the motor (7) according to the detection signal of the photoelectric sensor.

5. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, The top of the support frame (11) is fixedly connected to a protective cover. The two sides of the protective cover are fixedly connected to the support frame (11) by bolts. The top of the protective cover has multiple heat dissipation holes, and a dustproof net is fixedly installed inside the heat dissipation holes. A lubrication device is fixedly installed inside the protective cover.

6. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, The bottom of the bearing platform (3) is fixedly connected with multiple reinforcing ribs. The reinforcing ribs are evenly distributed along the length of the bearing platform (3). The two ends of the reinforcing ribs are fixedly connected to the bottom of the bearing platform (3) by bolts. The top of the reinforcing ribs is fixedly connected with a shock-absorbing pad. The top of the shock-absorbing pad is flush with the bottom of the bearing platform (3).

7. A lifting mechanism for mold changing in a hot pressing edge-sealing equipment according to claim 1, characterized in that, The guide groove of the crossbeam (4) is provided with a smooth coating material of polytetrafluoroethylene, and the outer surface of the slider (5) is in close contact with the inner wall of the guide groove.

Images