Double-layer clamp library for door cover production line

Abstract

The invention relates to a door cover production line double-layer clamp warehouse, and belongs to the technical field of mechanical conveying equipment, the door cover production line double-layer clamp warehouse comprises a three-dimensional warehouse location, the three-dimensional warehouse location is provided with at least two layers of warehouse locations, and each layer of warehouse location is internally provided with a clamp storage device; and the storing and taking unit comprises a lifting frame and a lifting driving module used for driving the lifting frame to ascend and descend, and a push-pull device used for bearing the clamps and a rotating device used for driving the push-pull device to rotate so as to be in butt joint with the clamp storage device are arranged on the lifting frame. Through mutual cooperation of the three-dimensional storage positions and the access units, efficient storage of multiple sets of clamps can be achieved, the occupied area is effectively reduced, and the space utilization rate is increased. The lifting frame and the rotating device cooperatively operate, vertical lifting and horizontal rotating actions of the clamp can be completed, and each layer of clamp storage device is accurately in butt joint. And the push-pull device can pull the clamp from the external platform to the access unit and can also push the clamp to the specified storage device, so that the switching efficiency is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical conveying equipment, and in particular to a double-layer fixture library for a door cover production line. Background Art

[0002] A car's four doors and two covers include the left and right front doors, rear doors, engine cover, and trunk lid (tailgate), which are important components of the car body assembly. An automated door cover welding production line generally consists of two lines: the door production line and the front and rear cover production line. The general door production process consists of three processes: welding, gluing, and hemming. For the door line, each process is equipped with four sets of fixtures, and the fixtures generally weigh up to 500kg to 1000kg. When a new model is introduced to the production line, the production line needs to be equipped with a manual or automatic fixture switching mechanism.

[0003] In related technologies, the fixture switching design is generally a one-to-four fixture switching mechanism, which is a flat switching structure. It occupies a large area and has scattered storage locations. If one or two sets of fixtures are added, more workstations need to be added near the production line to store the fixtures. As a result, the space around the production line is completely occupied by the switching mechanism, and there is no space to store enough material racks, which affects production efficiency and reduces production rhythm. Moreover, as the number of switching mechanism stations increases, the fixture movement distance becomes longer and the switching time also becomes longer, which seriously affects the fixture switching efficiency of the production line.

[0004] Therefore, it is necessary to study and improve the above structure and provide a double-layer fixture library for the door cover production line, so as to configure more storage locations for the production line within a limited space without extending the mold change time and improving the fixture switching efficiency. Summary of the Invention

[0005] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a double-layer fixture library for a door cover production line, which can configure more storage locations for the production line within a limited space without extending the mold change time and improving the fixture switching efficiency.

[0006] The embodiment of the present application provides a double-layer fixture library for a door cover production line, comprising: Three-dimensional storage space, wherein the three-dimensional storage space is provided with at least two layers of storage space, and each layer of the storage space is provided with a fixture storage device; The access unit includes a lifting frame and a lifting drive module for driving the lifting frame to lift and lower. The lifting frame is provided with a push-pull device for carrying the clamp, and a rotating device for driving the push-pull device to rotate to dock with the clamp storage device.

[0007] In some embodiments, the push-pull device includes a movable frame provided on the rotating device and for the clamp to move, and a first linear motion mechanism provided on the movable frame and for driving the clamp to move; The sliding working part of the first linear motion mechanism is provided with a first hook arm extending along the length direction of the first linear motion mechanism, and the first hook arm is provided with a first positioning pin telescopic mechanism for locking the clamp and the first hook arm.

[0008] In some embodiments, there are two first hook arms and they are symmetrically arranged, the opposite ends of the two first hook arms respectively extend beyond the sliding working part of the first linear motion mechanism, and the two first positioning pin telescopic mechanisms are respectively located at the opposite ends of the two first hook arms.

[0009] In some embodiments, the movable frame is provided with a second positioning pin telescopic mechanism and a third positioning pin telescopic mechanism for locking the clamp relative to the movable frame, and the second positioning pin telescopic mechanism and the third positioning pin telescopic mechanism are arranged at intervals along the length direction of the movable frame.

[0010] In some embodiments, the lifting drive module includes a fixed frame, and the lifting frame is located within the fixed frame and is slidably connected to the fixed frame; The fixed frame is provided with a lifting chain transmission mechanism located at the four corners of the lifting frame and connected to the lifting frame, and a synchronous driving mechanism for driving the lifting chain transmission mechanisms at the four corners of the lifting frame to move synchronously.

[0011] In some embodiments, the fixed frame includes columns located at four corners of the lifting frame, and sliders connected to the lifting frame are slidably connected to the columns; The lifting chain transmission mechanism includes an upper sprocket and a lower sprocket provided on the column, and a vertical chain connected to the upper sprocket and the lower sprocket, and the slider is connected to the vertical chain; The synchronous drive mechanism includes two transverse chains that are parallel to each other and respectively connected to the two pairs of upper sprockets. Two coupling rods that are parallel to each other and respectively connected to the upper sprockets on both sides are arranged between the transverse chains on both sides. A drive motor connected to the upper sprocket is arranged on one of the columns.

[0012] In some embodiments, the access unit further comprises a transition platform device for docking with the push-pull device; The transition platform device includes a conveying platform for the movement of the clamp, and a second linear motion mechanism provided on the conveying platform and used to drive the movement of the clamp; The sliding working part of the second linear motion mechanism is provided with a second hook arm extending along the length direction of the second linear motion mechanism, and the second hook arm is provided with a fourth positioning pin telescopic mechanism for locking the clamp and the second hook arm.

[0013] In some embodiments, the number of the second hooking arms is two and they are symmetrically arranged, the opposite ends of the two second hooking arms respectively extend beyond the sliding working part of the second linear motion mechanism, and the two fourth positioning pin telescopic mechanisms are respectively located at the opposite ends of the two second hooking arms.

[0014] In some embodiments, the conveying platform is provided with a fifth positioning pin telescopic mechanism and a sixth positioning pin telescopic mechanism for locking the clamp relative to the conveying platform. The fifth positioning pin telescopic mechanism and the sixth positioning pin telescopic mechanism are arranged at intervals along the length direction of the conveying platform.

[0015] In some embodiments, the fixture storage device includes a storage platform for supporting the fixture, and a seventh positioning pin retractable mechanism disposed on the storage platform and for locking the fixture relative to the storage platform; The storage platform is provided with a stopper for limiting the clamp and a detection switch for detecting whether the clamp is in place.

[0016] The beneficial effects of the technical solution provided by this application include: An embodiment of the present application provides a double-layer fixture warehouse for a door cover production line, which is provided with a three-dimensional storage location and a storage and access unit; wherein the three-dimensional storage location is provided with at least two layers of storage locations, and each layer of storage location is provided with a fixture storage device; the storage and access unit includes a lifting frame, and a lifting drive module for driving the lifting frame to lift and lower, and the lifting frame is provided with a push-pull device for carrying the fixture, and a rotating device for driving the push-pull device to rotate to dock with the fixture storage device.

[0017] Therefore, the coordinated use of three-dimensional storage locations and access units enables efficient storage of multiple fixtures, effectively reducing floor space and improving space utilization. The lifting frame and rotating mechanism work together to achieve vertical lifting and horizontal rotation of fixtures, enabling precise docking with fixture storage devices on each level. The reciprocating motion of the push-pull mechanism allows fixtures to be pulled from the external platform to the access unit or pushed to a designated storage device, significantly improving switching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic structural diagram of a double-layer fixture library according to an embodiment of the present application; Figure 2 This is a schematic structural diagram of a push-pull device according to an embodiment of the present application; Figure 3 This is a structural diagram of a lifting drive module according to an embodiment of the present application; Figure 4 This is a schematic structural diagram of a lifting frame according to an embodiment of the present application; Figure 5 This is a schematic structural diagram of a transition stage device according to an embodiment of the present application; Figure 6 This is a schematic structural diagram of a clamp storage device according to an embodiment of the present application.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 100. Three-dimensional storage space; 110. Fixture storage device; 111. Storage platform; 112. Seventh positioning pin retractable mechanism; 113. Stopper; 114. Detection switch; 115. Lateral guide wheel; 116. Support guide wheel; 200, access unit; 210, lifting frame; 211, mounting plate; 220, lifting drive module; 221, fixed frame; 2211, column; 222, slider; 223, vertical chain; 224, horizontal chain; 225, coupling rod; 226, drive motor; 227, hinge seat; 228, cross reinforcement rod; 230. Push-pull device; 231. Movable frame; 232. First linear motion mechanism; 233. First hooking arm; 234. First positioning pin telescopic mechanism; 235. Second positioning pin telescopic mechanism; 236. Third positioning pin telescopic mechanism; 240. Rotating device; 250. Transition platform device; 251. Conveying platform; 252. Second linear motion mechanism; 253. Second hooking arm; 254. Fourth positioning pin telescopic mechanism; 255. Fifth positioning pin telescopic mechanism; 256. Sixth positioning pin telescopic mechanism. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a double-layer fixture library for a door cover production line, which can configure more storage locations for the production line within a limited space without extending the mold change time and improving the fixture switching efficiency.

[0023] See also Figures 1 to 6 As shown, the embodiment of the present application provides a double-layer fixture library for a door cover production line, comprising: The three-dimensional storage location 100 is provided with at least two layers of storage locations, and each layer of storage location is provided with a fixture storage device 110; The access unit 200 includes a lifting frame 210 and a lifting drive module 220 for driving the lifting frame 210 to lift and lower. The lifting frame 210 is provided with a push-pull device 230 for carrying the clamp, and a rotating device 240 for driving the push-pull device 230 to rotate to dock with the clamp storage device 110.

[0024] The double-layer fixture warehouse for the door cover production line of the present embodiment achieves efficient storage of multiple sets of fixtures by providing three-dimensional storage locations 100 and access units 200, effectively reducing floor space and improving space utilization. The lifting frame 210 and the rotating device 240 work together to achieve vertical lifting and horizontal rotation of the fixtures, thereby precisely docking the fixture storage devices 110 on each layer. The reciprocating motion of the push-pull device 230 allows fixtures to be pulled from the external platform to the access unit 200 or pushed to a designated storage device, significantly improving switching efficiency.

[0025] In practice, two levels of storage are provided on either side of the storage and access unit 200, each equipped with a fixture storage device 110, for a total of four fixture storage devices 110. To switch fixtures, the lifting frame 210 is first lowered to the bottom level, and the push-pull device 230 pulls the fixture from the external platform to its own platform. The lifting frame 210 is then raised, and the push-pull device 230 is rotated 90 degrees by the rotating device 240 to align it with the upper level fixture storage device 110, completing the fixture push operation.

[0026] The lifting frame 210 is again lowered, allowing the push-pull mechanism 230 to precisely align with the lower fixture storage device 110. The push-pull mechanism 230 then pulls the lower fixture onto its own platform. The rotating mechanism 240 rotates the push-pull mechanism 230 another 90 degrees, aligning it with the external platform, and finally pushes the fixture onto the external platform. This process allows for more storage space within a limited space, while minimizing mold changeover time and improving switching efficiency.

[0027] It should be noted that the embodiments of the present application utilize vertical space in conjunction with rotary lifting to expand the number of fixtures per station from the traditional four to eight or even sixteen. Combined with the high-precision lifting control of the lifting frame 210 and the reciprocating motion of the push-pull device 230, the fixture travel distance and switching time can be significantly shortened, effectively resolving the technical challenges of limited production line space and inefficient mold changeovers.

[0028] In some alternative embodiments: See Figures 1 to 6 As shown, the embodiment of the present application provides a double-layer fixture library for a door cover production line. The push-pull device 230 of the double-layer fixture library of the door cover production line includes a movable frame 231 provided on a rotating device 240 for moving the fixture, and a first linear motion mechanism 232 provided on the movable frame 231 for driving the fixture to move. A first hooking arm 233 extending along the length direction of the first linear motion mechanism 232 is provided on the sliding working portion of the first linear motion mechanism 232 . The first hooking arm 233 is provided with a first positioning pin retractable mechanism 234 for locking the clamp and the first hooking arm 233 .

[0029] The first hook arm 233 of the embodiment of the present application extends along the length direction of the first linear motion mechanism 232, so that it can extend into the predetermined position below the clamp. The first positioning pin telescopic mechanism 234 on the first hook arm 233 can be inserted into the bottom hole of the clamp to complete the grasping and releasing of the clamp, thereby realizing the rapid locking of the clamp and the first hook arm 233.

[0030] Among them, the first linear motion mechanism 232 moves the clamp to the bearing area of ​​the movable frame 231 by driving the reciprocating motion of the first hook arm 233, and when the clamp is pushed to the transition platform device 250 or the clamp storage device 110, the positioning pin automatically retracts under the action of the first positioning pin retracting mechanism 234, releasing the locked state.

[0031] For example, a mounting plate 211 is fixedly mounted on the lifting frame 210, and a rotating device 240 is mounted on the mounting plate 211. The rotating device 240 can be an electric rotating table or a hydraulic rotating table. The first linear motion mechanism 232 can be an electric slide structure, in which a rotating screw drives the slide along a linear path; or a rack and pinion slide module, in which a motor on the slide drives a gear to roll along the rack to achieve displacement.

[0032] The first hooking arm 233 is fixedly connected to the slide, and the first positioning pin telescopic mechanism 234 adopts a cylinder fixedly connected to the first hooking arm 233. The positioning pin connected to the output end of the cylinder can drive the positioning pin to reciprocate in the vertical direction. The insertion and retraction of the positioning pin are controlled by the telescopic action of the cylinder, thereby realizing the precise grasping and release of the clamp.

[0033] In some alternative embodiments: See Figures 1 to 6 As shown, an embodiment of the present application provides a double-layer fixture warehouse for a door cover production line, wherein the number of the first hooking arms 233 of the double-layer fixture warehouse for the door cover production line is two and they are symmetrically arranged, and the opposite ends of the two first hooking arms 233 respectively extend beyond the sliding working part of the first linear motion mechanism 232, and the two first positioning pin retracting mechanisms 234 are respectively located at the opposite ends of the two first hooking arms 233.

[0034] In this embodiment, two first hooking arms 233 are symmetrically positioned on either side of the sliding working portion of the first linear motion mechanism 232. The opposing ends of the two first hooking arms 233 extend beyond the edge of the sliding working portion, and the corresponding two first positioning pin retracting mechanisms 234 are installed at opposing ends. This symmetrical arrangement expands the gripping range of the clamp while reducing the required length of the first linear motion mechanism 232, optimizing the utilization of the space above the movable frame 231.

[0035] During implementation, the fixture is first pulled to the end support position of the movable frame 231 using the first hooking arm 233 and its locating pin on one side, and then the locating pin on that side is withdrawn. At this point, the first linear motion mechanism 232 drives the first hooking arm 233 on the other side to move below the fixture, switching the locating pin on that side to connect with the fixture. The first linear motion mechanism 232 then drives the first hooking arm 233 on that side to move the fixture to the center along the movable frame 231. The alternating gripping and releasing of the first hooking arms 233 on both sides achieves precise positioning and transfer of the fixture on the movable frame 231, further improving the smoothness and stability of fixture switching.

[0036] In some alternative embodiments: See Figures 1 to 6As shown, an embodiment of the present application provides a double-layer fixture library for a door cover production line, and a second positioning pin retracting mechanism 235 and a third positioning pin retracting mechanism 236 for locking the fixture relative to the movable frame 231 are provided on the movable frame 231 of the double-layer fixture library of the door cover production line. The second positioning pin retracting mechanism 235 and the third positioning pin retracting mechanism 236 are arranged at intervals along the length direction of the movable frame 231.

[0037] The second positioning pin retracting mechanism 235 of the embodiment of the present application can lock the clamp at the end of the movable frame 231, making it convenient to switch the first hook arm 233 on the other side to connect the clamp; the third positioning pin retracting mechanism 236 can lock the clamp at the center of the movable frame 231, making it convenient for the rotating device 240 to drive the movable frame 231 and the clamp to rotate stably.

[0038] For example, the movable frame 231 is symmetrically equipped with lateral guide wheels 115 and support guide wheels 116 that cooperate with the clamp. At the same time, two proximity switches are correspondingly installed on the movable frame 231 to detect the position of the clamp, ensuring the high precision of the clamp stop position, facilitating the second positioning pin telescopic mechanism 235 and the third positioning pin telescopic mechanism 236 to accurately lock the clamp. The second positioning pin telescopic mechanism 235 and the third positioning pin telescopic mechanism 236 are both composed of a telescopic cylinder and a positioning pin. The telescopic cylinder is fixed on one side of the movable frame 231 and can drive the positioning pin to move vertically.

[0039] In some alternative embodiments: See Figures 1 to 6 As shown, the embodiment of the present application provides a double-layer fixture library for a door cover production line, wherein the lifting drive module 220 of the double-layer fixture library of the door cover production line includes a fixed frame 221, and the lifting frame 210 is located in the fixed frame 221 and is slidably connected to the fixed frame 221; The fixed frame 221 is provided with lifting chain transmission mechanisms located at the four corners of the lifting frame 210 and connected to the lifting frame 210 , and a synchronous driving mechanism for driving the lifting chain transmission mechanisms at the four corners of the lifting frame 210 to move synchronously.

[0040] Four sets of lifting chain transmission mechanisms are installed on the fixed frame 221 of the embodiment of the present application, which are respectively connected to the four corners of the lifting frame 210, and the four corners of the lifting frame 210 slide with the fixed frame 221; the synchronous drive mechanism controls the synchronous operation of the four sets of lifting chain transmission mechanisms, so that the lifting frame 210 can be lifted smoothly in the vertical direction. At the same time, the sliding connection relationship effectively limits the lateral deviation of the lifting frame 210, ensuring the stability of the movement process.

[0041] In some alternative embodiments: See Figures 1 to 6As shown, the embodiment of the present application provides a double-layer fixture warehouse for a door cover production line. The fixed frame 221 of the double-layer fixture warehouse of the door cover production line includes columns 2211 located at the four corners of the lifting frame 210. Sliders 222 connected to the lifting frame 210 are slidably connected to the columns 2211; The lifting chain transmission mechanism includes an upper sprocket and a lower sprocket arranged on the column 2211, and a vertical chain 223 connected to the upper sprocket and the lower sprocket, and a slider 222 is connected to the vertical chain 223; The synchronous drive mechanism includes two parallel transverse chains 224 respectively connected to two pairs of upper sprockets. Two parallel coupling rods 225 respectively connected to the upper sprockets are arranged between the transverse chains 224. A drive motor 226 connected to the upper sprockets is arranged on one of the columns 2211.

[0042] The fixed frame 221 of the embodiment of the present application achieves stable support for the lifting frame 210 through four sets of lifting chain transmission mechanisms, wherein each set of lifting chain transmission mechanisms includes an upper sprocket, a lower sprocket, and a vertical chain 223 connecting the two and arranged inside the cavity of the column 2211, and the sliders 222 at the four corners of the lifting frame 210 are respectively fixedly connected to the corresponding vertical chains 223.

[0043] The synchronous drive mechanism uses a combination of parallel transverse chains 224 and coupling rods 225. The transverse chains 224 on both sides drive two pairs of upper sprockets respectively. The coupling rods 225 rigidly connect the upper sprockets on both sides to ensure torque balance. The drive motor 226 is installed on one of the columns 2211 and directly drives the corresponding upper sprocket. The power is synchronously transmitted to the four sets of vertical chains 223 through chain transmission, so that the lifting frame 210 can be lifted and lowered in the vertical direction without offset. At the same time, the sliding cooperation relationship between the guide rail and the slider 222 effectively constrains the lateral displacement, ensuring that the fixture library maintains smooth movement under load changes.

[0044] For example, the four corners of the lifting frame 210 of this embodiment are fixedly connected with hinge seats 227, and the hinge seats 227 are hinged to the sliders 222 at the four corners. A pair of parallel beams are fixed to the top of the fixed frame 221, and the transverse chains 224 on both sides are respectively arranged in the cavities of the beams on both sides. At the same time, a cross reinforcement rod 228 is installed on the fixed frame 221 to ensure the overall structural strength.

[0045] In some alternative embodiments: See Figures 1 to 6 As shown, the embodiment of the present application provides a double-layer fixture library for a door cover production line, wherein the access unit 200 of the double-layer fixture library of the door cover production line further includes a transition platform device 250 for docking with the push-pull device 230; The transition stage device 250 includes a conveying platform 251 for the movement of the fixture, and a second linear motion mechanism 252 disposed on the conveying platform 251 and used to drive the movement of the fixture; A second hooking arm 253 extending along the length direction of the second linear motion mechanism 252 is provided on the sliding working portion of the second linear motion mechanism 252 . The second hooking arm 253 is provided with a fourth positioning pin retracting mechanism 254 for locking the clamp and the second hooking arm 253 .

[0046] The transition platform device 250 of the present embodiment serves as a fixture transfer area, connecting the external platform with the platform of the push-pull device 230 itself to ensure smooth fixture switching. Specifically, the second linear motion mechanism 252 has the same structure as the first linear motion mechanism 232. The second hook-pull arm 253 is fixedly mounted on the sliding working portion of the second linear motion mechanism 252, and the fourth positioning pin retracting mechanism 254 is installed at its end. The positioning pin is inserted into the bottom hole of the fixture to achieve rapid grasping and release. The second linear motion mechanism 252 drives the reciprocating motion of the second hook-pull arm 253 to move the fixture to the load-bearing area of ​​the conveying platform 251.

[0047] In some alternative embodiments: See Figures 1 to 6 As shown, an embodiment of the present application provides a double-layer fixture warehouse for a door cover production line, wherein the number of the second hooking arms 253 of the double-layer fixture warehouse for the door cover production line is two and they are symmetrically arranged, and the opposite ends of the two second hooking arms 253 respectively extend beyond the sliding working part of the second linear motion mechanism 252, and the two fourth positioning pin retracting mechanisms 254 are respectively located at the opposite ends of the two second hooking arms 253.

[0048] The two second positioning pin retracting mechanisms 235 of the present embodiment are mounted on opposite ends of the conveying platform 251, forming a symmetrical layout. The second hooking and pulling arm 253, which faces the front end of the conveying platform 251, is used to grab the fixture from the external platform and pull it into the front end support area. The second hooking and pulling arm 253, which faces the rear end of the conveying platform 251, is used to push the fixture to the rear end position, facilitating docking with the movable frame 231 of the push-pull device 230, thereby optimizing space utilization.

[0049] In practice, the fixture is first pulled from the external platform to the front end support area of ​​the conveying platform 251 by the second hooking arm 253 and its positioning pin. Then, the positioning pin on that side is retracted and unlocked, and the second linear motion mechanism 252 drives the second hooking arm 253 on the other side to move under the fixture, switching the positioning pin on that side to connect with the fixture.

[0050] Driven by the second linear motion mechanism 252, the second hooking arm 253 on this side moves the fixture along the conveying platform 251 to the end position. The end position serves as the fixture's intersection point, allowing it to dock with the movable frame 231 of the push-pull device 230, ensuring efficient transfer of the fixture between the conveying platform 251 and the movable frame 231.

[0051] In some alternative embodiments: See Figures 1 to 6 As shown, an embodiment of the present application provides a double-layer fixture warehouse for a door cover production line, and a fifth positioning pin retracting mechanism 255 and a sixth positioning pin retracting mechanism 256 for locking the fixture relative to the conveying platform 251 are provided on the conveying platform 251 of the double-layer fixture warehouse of the door cover production line. The fifth positioning pin retracting mechanism 255 and the sixth positioning pin retracting mechanism 256 are arranged at intervals along the length direction of the conveying platform 251.

[0052] The fifth positioning pin telescopic mechanism 255 of the embodiment of the present application is used to lock the clamp at the head end position of the conveying platform 251, so as to facilitate switching the second hook arm 253 on the other side to connect with the clamp; the sixth positioning pin telescopic mechanism 256 is used to lock the clamp at the end position of the conveying platform 251, and the end position can be docked with the movable frame 231 of the push-pull device 230, so as to facilitate the first hook arm 233 to establish a connection with the clamp.

[0053] The conveyor platform 251 serves as a transfer area, achieving efficient connection between the external platform and the movable frame 231 through differentiated positioning at its head and tail ends. Once the fixture enters the conveyor platform 251 from the external platform, the movable frame 231 moves downward along with the lifting frame 210 and docks with the conveyor platform 251, forming a continuous flow path. Positioning mechanisms with different functions are located at the head and tail ends of the conveyor platform 251, ensuring stability and accuracy during the fixture transfer process through differentiated control logic.

[0054] For example, lateral guide wheels 115 and support guide wheels 116 are symmetrically mounted on the conveying platform 251. These wheels 115 and 116 respectively form a guide fit with the fixture, effectively suppressing lateral movement of the fixture during movement. Two detection switches 114 are mounted at corresponding positions on the movable frame 231. These switches sense the fixture's in-position signal, enabling high-precision control of the fixture's stop position. This provides a trigger for subsequent positioning pins, ensuring that the fixture can be locked or released immediately after stopping at the designated position.

[0055] In some alternative embodiments: See Figures 1 to 6As shown, an embodiment of the present application provides a double-layer fixture warehouse for a door cover production line. The fixture storage device 110 of the double-layer fixture warehouse for the door cover production line includes a storage platform 111 for supporting the fixture, and a seventh positioning pin retractable mechanism 112 arranged on the storage platform 111 and used to lock the fixture relative to the storage platform 111; the storage platform 111 is provided with a block 113 for limiting the fixture, and a detection switch 114 for detecting that the fixture is in place.

[0056] The seventh positioning pin retracting mechanism 112 of this embodiment comprises a retractable cylinder and a positioning pin. The retractable cylinder is fixed to one side of the storage platform 111. The reciprocating vertical motion of the positioning pin allows for rapid locking and release of the fixture from the storage platform 111. When the fixture is moved to a designated position on the storage platform 111, the positioning pin automatically inserts into the bottom hole of the fixture, securing it. When the fixture is removed, the positioning pin retracts, releasing the locking state.

[0057] Specifically, storage platform 111 is symmetrically mounted with lateral guide wheels 115 and support guide wheels 116 to guide the fixture. A stopper 113 is also mounted at the end of storage platform 111 to limit the fixture's displacement on storage platform 111 and prevent it from falling off the end. Stopper 113 works in conjunction with the locating pin of the seventh locating pin retractable mechanism 112 to ensure the fixture's stability during storage.

[0058] Meanwhile, a detection switch 114 is located on the storage platform 111. This triggers the retraction and extension of the locating pins by sensing the fixture's arrival signal. This detection switch 114 can be a proximity switch or a photoelectric sensor. The sensing range of the detection switch 114 matches the retraction and extension travel of the locating pins, ensuring that the fixture is precisely docked and immediately locked, reducing the risk of fixture slippage or misalignment.

[0059] The layout of the seventh positioning pin retractable mechanism 112, combined with the coordination of the stopper 113 and the detection switch 114, can form a dual-security mechanism for fixture storage. The stopper 113 provides physical limit, and the detection switch 114 realizes dynamic sensing. Together, they ensure the fixture's reliable positioning on the storage platform 111.

[0060] When the fixture moves into the sensing area of ​​detection switch 114, the signal triggers the positioning pin to insert into the hole, completing the fixation. If detection switch 114 does not receive the in-position signal, the positioning pin remains retracted, preventing damage to the fixture caused by misoperation. This design, through the synergy of mechanical limiters and electronic sensing, improves the stability and automation level of the fixture in multi-layer storage warehouses.

[0061] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0062] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0063] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A double-layer fixture warehouse for a door cover production line, characterized in that: include: A three-dimensional storage location (100), wherein the three-dimensional storage location (100) is provided with at least two layers of storage locations, and each layer of the storage location is provided with a fixture storage device (110); A storage and access unit (200) includes a lifting frame (210) and a lifting drive module (220) for driving the lifting frame (210) to lift and lower; the lifting frame (210) is provided with a push-pull device (230) for carrying a clamp, and a rotating device (240) for driving the push-pull device (230) to rotate so as to dock with the clamp storage device (110).

2. The double-layer fixture warehouse for the door cover production line according to claim 1, characterized in that: The push-pull device (230) comprises a movable frame (231) provided on the rotating device (240) for the clamp to move, and a first linear motion mechanism (232) provided on the movable frame (231) for driving the clamp to move; A first hooking arm (233) extending along the length direction of the first linear motion mechanism (232) is provided on the sliding working portion of the first linear motion mechanism (232), and a first positioning pin telescopic mechanism (234) for locking the clamp and the first hooking arm (233) is provided on the first hooking arm (233).

3. The double-layer fixture warehouse for the door cover production line according to claim 2, characterized in that: The number of the first hooking arms (233) is two and they are symmetrically arranged. The opposite ends of the two first hooking arms (233) respectively exceed the sliding working part of the first linear motion mechanism (232). The two first positioning pin telescopic mechanisms (234) are respectively located at the opposite ends of the two first hooking arms (233).

4. The double-layer fixture warehouse for the door cover production line according to claim 3, characterized in that: The movable frame (231) is provided with a second positioning pin telescopic mechanism (235) and a third positioning pin telescopic mechanism (236) for locking the clamp relative to the movable frame (231). The second positioning pin telescopic mechanism (235) and the third positioning pin telescopic mechanism (236) are arranged at intervals along the length direction of the movable frame (231).

5. The double-layer fixture warehouse for the door cover production line according to claim 1, characterized in that: The lifting drive module (220) comprises a fixed frame (221), and the lifting frame (210) is located inside the fixed frame (221) and is slidably connected to the fixed frame (221); The fixed frame (221) is provided with lifting chain transmission mechanisms located at the four corners of the lifting frame (210) and connected to the lifting frame (210), and a synchronous driving mechanism for driving the lifting chain transmission mechanisms at the four corners of the lifting frame (210) to move synchronously.

6. The double-layer fixture warehouse for the door cover production line according to claim 5, characterized in that: The fixed frame (221) comprises columns (2211) located at four corners of the lifting frame (210), and sliders (222) connected to the lifting frame (210) are slidably connected to the columns (2211); The lifting chain transmission mechanism comprises an upper sprocket and a lower sprocket arranged on the column (2211), and a vertical chain (223) connected to the upper sprocket and the lower sprocket, and the slider (222) is connected to the vertical chain (223); The synchronous drive mechanism comprises two mutually parallel transverse chains (224) respectively connected to the two pairs of upper sprockets, two mutually parallel coupling rods (225) respectively connected to the upper sprockets on the two sides are provided between the transverse chains (224), and a drive motor (226) connected to the upper sprockets is provided on one of the columns (2211).

7. The double-layer fixture warehouse for the door cover production line according to claim 1, characterized in that: The access unit (200) further includes a transition platform device (250) for docking with the push-pull device (230); The transition platform device (250) includes a conveying platform (251) for the movement of the clamp, and a second linear motion mechanism (252) provided on the conveying platform (251) and used for driving the movement of the clamp; A second hooking arm (253) extending along the length direction of the second linear motion mechanism (252) is provided on the sliding working portion of the second linear motion mechanism (252), and a fourth positioning pin telescopic mechanism (254) for locking the clamp and the second hooking arm (253) is provided on the second hooking arm (253).

8. The double-layer fixture warehouse for the door cover production line according to claim 7, characterized in that: The number of the second hooking arms (253) is two and they are symmetrically arranged. The opposite ends of the two second hooking arms (253) respectively exceed the sliding working part of the second linear motion mechanism (252). The two fourth positioning pin telescopic mechanisms (254) are respectively located at the opposite ends of the two second hooking arms (253).

9. The double-layer fixture warehouse for a door cover production line according to claim 8, characterized in that: The conveying platform (251) is provided with a fifth positioning pin telescopic mechanism (255) and a sixth positioning pin telescopic mechanism (256) for locking the clamp relative to the conveying platform (251). The fifth positioning pin telescopic mechanism (255) and the sixth positioning pin telescopic mechanism (256) are arranged at intervals along the length direction of the conveying platform (251).

10. The double-layer fixture warehouse for a door cover production line according to claim 1, characterized in that: The clamp storage device (110) comprises a storage platform (111) for supporting the clamp, and a seventh positioning pin telescopic mechanism (112) disposed on the storage platform (111) and used to lock the clamp relative to the storage platform (111); The storage platform (111) is provided with a stopper (113) for limiting the clamp, and a detection switch (114) for detecting that the clamp is in place.

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