A seat production device and production method with embedded core

Abstract

This invention proposes a seat production equipment and method with embedded core ribs, comprising: a core rib positioning mechanism for positioning a core rib group consisting of a first core rib and a second core rib; an injection mold including an upper mold and a lower mold that cooperate to achieve seat injection molding; and a core rib placement mechanism including a fixing frame, a gripping component, and a position detection component. The fixing frame is connected to a robotic arm, the gripping component is located below the fixing frame for gripping the core rib group on the core rib positioning mechanism and placing the core ribs on the lower mold, and the detection component is located between the fixing frame and the gripping component for detecting the placement position of the core rib group on the lower mold. The seat production equipment with embedded core ribs disclosed in this invention improves the positional accuracy of the core ribs on the lower mold while ensuring high-efficiency seat production and the safety of the injection mold.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to a seat manufacturing mechanism and method with embedded core ribs. Background Technology

[0002] An injection molding machine is a primary molding device that uses plastic molds to create various shapes of plastic products from thermoplastic or thermosetting plastics. It heats the plastic, applies high pressure to the molten plastic, and injects it to fill the mold cavity. Metal insert injection molding involves pre-fixing metal inserts in appropriate positions within the mold before injecting plastic. After the mold opens, the inserts are encased in the cooled and solidified plastic, forming a plastic part with the metal inserts.

[0003] To maintain structural strength, plastic seats typically have metal core ribs pre-placed in the injection mold. These ribs are then embedded within the molded plastic seat using a metal insert injection molding process. Depending on the stress distribution on the seat, multiple metal core ribs may be needed, and their placement must be carefully planned to ensure both structural strength and stress balance after molding.

[0004] Currently, metal core ribs are typically pre-positioned manually in the mold before injection molding. To conform to the seat's outer contour, the core ribs are usually irregularly shaped. During manual placement, their position in the mold needs adjustment to ensure they are properly embedded after the seat is molded. However, due to the large number of core ribs required for a single seat and their horizontal and vertical arrangement in the mold, manually placing each core rib individually is inefficient and lacks precision. This can lead to misalignment, potentially causing damage to the injection mold during mold closing due to the impact of the die and core ribs.

[0005] Chinese patent CN216001205U discloses a novel pre-processing device for embedded metal injection molded parts. It utilizes an angle detection unit to detect the rotation angle of a flipping seat, ensuring the correct embedding angle of the metal insert within the injection mold. Two grippers effectively hold the metal insert, replacing manual placement. A push-pull unit drives a telescopic rod to extend and retract, allowing the metal insert to be quickly embedded into the injection mold. While this method ensures the placement angle of simple metal inserts within the mold, it is clearly insufficient for detecting the placement of long, thin metal core ribs within the mold from all angles. Summary of the Invention

[0006] In view of this, the present invention proposes a seat production equipment and production method with embedded core ribs to solve the problem that the positioning accuracy of the metal core ribs on the mold cannot be guaranteed.

[0007] The technical solution of this invention is implemented as follows:

[0008] On one hand, the present invention provides a chair manufacturing equipment with embedded core ribs, comprising:

[0009] The core reinforcement positioning mechanism is used to position the core reinforcement group consisting of the first core reinforcement and the second core reinforcement.

[0010] The injection mold includes an upper mold and a lower mold that cooperate with each other to achieve injection molding of the seat;

[0011] The core reinforcement placement mechanism includes a fixed frame, a gripping component, and a position detection component. The fixed frame is used to connect with a robotic arm. The gripping component is located below the fixed frame and is used to grip the core reinforcement group on the core reinforcement positioning mechanism and place the core reinforcement on the lower mold. The detection component is located between the fixed frame and the gripping component and is used to detect the placement position of the core reinforcement group on the lower mold.

[0012] Based on the above technical solution, preferably, the core rib positioning mechanism includes a base plate and a first positioning seat, a second positioning seat, and a third positioning seat fixedly disposed at intervals on the base plate. The first positioning seat, the second positioning seat, and the third positioning seat cooperate with each other to position and place multiple spaced first core ribs. The first positioning seat, the second positioning seat, and the third positioning seat are provided with first positioning grooves for placing the first core ribs at intervals along their length direction. The third positioning seat is provided with a second positioning groove along its length direction. The second positioning groove is used to place second core ribs perpendicular to the first core ribs.

[0013] Furthermore, preferably, the core reinforcement positioning mechanism further includes an overlapping rod horizontally disposed outside the first positioning seat and the third positioning seat. The overlapping rod is used to overlap the two ends of the first core reinforcement in the length direction. The overlapping rod is provided with a first sensing element for detecting the position of the first core reinforcement at intervals. The second positioning groove is provided with a second sensing element for detecting the position of the second core reinforcement.

[0014] Preferably, both the first positioning groove and the second positioning groove are configured as V-shaped structures.

[0015] Based on the above technical solution, preferably, the gripping component includes a mounting plate floating below the fixed frame and multiple sets of first clamping devices and second clamping devices fixedly mounted at intervals on the mounting plate. The first clamping devices and second clamping devices cooperate with each other to pick up and put down the core rib group.

[0016] Further, preferably, the first clamping device includes a first clamp and a first positioning rod fixedly mounted on the mounting plate. The first clamp is provided in two spaced intervals, which are used to clamp both ends of the first core rib in the length direction. The first positioning rod is provided in multiple spaced intervals, which are used to abut against each position of the first core rib in the length direction. The first positioning rod is provided with a first limiting groove that matches the surface contour of the first core rib.

[0017] Further, preferably, the second clamping device includes a second gripper, a second positioning rod, and a lifting magnetic suction device fixedly mounted on the mounting plate. Two lifting magnetic suction devices are spaced apart and located in the two outermost first clamping devices. The two lifting magnetic suction devices are used to attract the two ends of the second core bar perpendicular to the length direction of the first core bar. The second gripper is used to clamp the middle of the second core bar. Multiple second positioning rods are spaced apart and are used to support the second core bar at various positions along its length. The second positioning rod is provided with a second limiting groove that matches the surface contour of the second core bar.

[0018] Furthermore, preferably, the mounting plate is also fixedly provided with a third sensing element and a fourth sensing element. The third sensing element is used to detect the position of both ends of the first core rib along its length, and the fourth sensing element is used to detect the position of both ends of the second core rib along its length.

[0019] Based on the above technical solution, preferably, multiple detection components are provided, and the multiple detection components are evenly distributed between the fixed frame and the mounting plate. Each detection component includes a sleeve, a guide rod, an elastic element, a limiting element, and a position sensor. The sleeve is fixedly mounted on the fixed frame. One end of the guide rod is vertically fixedly connected to the mounting plate, and the other end passes through the sleeve and is fixedly connected to the limiting element. The elastic element is sleeved on the guide rod between the fixed frame and the mounting plate. The position sensor is fixedly mounted on the side of the fixed frame away from the mounting plate and is used to detect the displacement of the limiting element relative to the sleeve.

[0020] On the other hand, the present invention discloses a method for producing a seat with embedded core ribs, comprising the following steps:

[0021] S1. The first core rib and the second core rib are pre-positioned and placed on the core rib positioning mechanism so that the first core rib and the second core rib are combined into a core rib group that needs to be embedded in the seat.

[0022] S2. The core bar placement mechanism is driven by a robotic arm to move between the core bar positioning mechanism and the lower mold. The core bar group on the core bar placement mechanism is picked up by the gripping component and transferred to the fixed position of the lower mold.

[0023] S3. After the core rib assembly is placed in the fixed position of the lower mold, the gripping component of the core rib placement mechanism is driven by the robot to press down the core rib assembly. When the detection component detects that the displacement of the gripping component relative to the fixed frame meets the design requirements, it is determined that the core rib assembly is correctly placed in the lower mold. The upper mold and the lower mold are then closed to perform the injection molding of the seat's embedded core rib.

[0024] The present invention has the following advantages over the prior art:

[0025] (1) The seat production equipment with embedded core ribs disclosed in this invention can preposition and place the first core rib and the second core rib to be embedded in the seat by setting a core rib positioning mechanism. The core rib placement mechanism is driven by a robot to move between the core rib positioning mechanism and the lower mold. The core rib group on the core rib positioning mechanism is picked up by the gripping component and transferred to the lower mold for one-time placement of the core rib group. The core rib group is placed on the lower mold in one-time mechanical placement, which greatly improves the placement efficiency of the core rib on the lower mold. By setting a detection component between the fixed frame and the gripping component, the placement position of the core rib group on the lower mold is detected by the detection component after the core rib group is placed on the lower mold, so as to ensure that the upper mold and the lower mold can be closed and injected after the core rib group is placed in place. While meeting the high-efficiency production of the seat, the placement accuracy of the core rib on the lower mold is improved, and the safety of the injection mold is guaranteed.

[0026] (2) By setting a first positioning groove in the first positioning seat, the second positioning seat and the third positioning seat, and setting a second positioning groove in the third positioning seat, and setting both the first positioning groove and the second positioning groove as a V-shaped structure, the positioning groove of the V-shaped structure can quickly realize the positioning of the first core and the second core when the core group is placed and positioned manually, ensuring the relative position accuracy of the first core and the second core, thereby improving the placement accuracy of the core group on the lower mold when the gripping component grips the core group and transfers it to the lower mold at one time;

[0027] (3) By setting the first positioning rod and the second positioning rod, on the one hand, during the gripping process, the first positioning rod and the second positioning rod press down on the core rib group on the core rib positioning mechanism in the vertical direction, so as to avoid the core rib group being misaligned due to its own elastic deformation during the gripping process of the first gripper and the second gripper, thereby improving the gripping accuracy of the first gripper and the second gripper. On the other hand, after the core rib group is placed in the lower mold, the first positioning rod and the second positioning rod press down on the surface of the core rib group again. The displacement of the gripping component relative to the fixed frame can be detected by the detection component, thereby determining whether the core rib group is correctly positioned in the lower mold. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of the core rib assembly disclosed in an embodiment of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the seat disclosed in this invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the seat production equipment with embedded core ribs disclosed in this invention.

[0032] Figure 4 This is a three-dimensional structural schematic diagram of the core rib positioning mechanism disclosed in this invention;

[0033] Figure 5 This is a three-dimensional structural schematic diagram of the core rib placement mechanism disclosed in this invention;

[0034] Figure 6 This is a schematic diagram of the assembly structure of the gripping component and the core rib assembly disclosed in this invention.

[0035] Figure 7 This is a three-dimensional structural diagram of the grasping component disclosed in this invention;

[0036] Figure 8 for Figure 5 Enlarged view of a portion of point A in the middle;

[0037] Figure label:

[0038] 1. Core rib positioning mechanism; P, Seat; S1, First core rib; S2, Second core rib; S, Core rib group; 2. Injection mold; 21, Upper mold; 22, Lower mold; 3. Core rib placement mechanism; 31, Fixing frame; 32, Gripping assembly; 33, Position detection assembly; 11, Base plate; 12, First positioning seat; 13, Second positioning seat; 14, Third positioning seat; 100, First positioning groove; 141, Second positioning groove; 15, Overlapping rod; 151, First sensing element; 142, Second sensing element 321. Mounting plate; 322. First clamping device; 323. Second clamping device; 3221. First gripper; 3222. First positioning rod; 3222a. First limiting groove; 3231. Second gripper; 3232. Second positioning rod; 3233. Lifting magnetic suction device; 3232a. Second limiting groove; 324. Third sensing element; 325. Fourth sensing element; 331. Sleeve; 332. Guide rod; 333. Elastic element; 334. Limiting element; 335. Position sensor. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, combined with Figure 5 This application discloses a chair manufacturing equipment with embedded core ribs, which is used to embed core ribs in a mold and perform injection molding to obtain a chair with embedded core ribs.

[0041] In existing technology, multiple metal core ribs need to be embedded in the plastic seat P according to the stress conditions of the seat P. The embedded positions of the metal core ribs need to be reasonably arranged to meet the structural strength and stress balance of the molded seat P. Since a large number of metal core ribs need to be embedded in a single seat P, and the core ribs are arranged horizontally and vertically on the mold, manually placing the metal core ribs one by one on the mold is inefficient. In addition, the accuracy of manual placement is insufficient, and the positional deviation of the metal core ribs on the mold is prone to occur. During the injection molding process, it is easy to cause the punch and die to collide with the core ribs during mold closing, resulting in damage to the injection mold 2.

[0042] To address the aforementioned technical problems, this application discloses a production equipment for a seat P with an embedded core rib, comprising a core rib positioning mechanism 1, an injection mold 2, and a core rib placement mechanism 3.

[0043] The core reinforcement positioning mechanism 1 is used to position the core reinforcement group S composed of the first core reinforcement S1 and the second core reinforcement S2. Specifically, a certain number of the first core reinforcement S1 and the second core reinforcement S2 are pre-positioned and placed on the core reinforcement positioning mechanism 1 by hand, so that the first core reinforcement S1 and the second core reinforcement S2 are placed on the core reinforcement positioning mechanism 1 in a certain combination form to form the core reinforcement group S, which is convenient for the core reinforcement placement mechanism 3 to grasp at once.

[0044] Injection mold 2 is used to receive the core rib and perform injection molding to form a seat P with the core rib embedded. In this embodiment, injection mold 2 includes an upper mold 21 and a lower mold 22 that cooperate to perform injection molding of seat P. Generally, the lower mold 22 is horizontally set on the injection molding machine. After the core rib is placed on the lower mold 22, the upper mold 21 and the lower mold 22 are closed, and finally, the barrel injection molding machine performs injection molding to form the seat P product. The structure of the upper mold 21 and the lower mold 22 involved in this embodiment is adapted to the contour of the seat P to be formed, and the injection molding process of injection mold 2 is prior art.

[0045] The core reinforcement placement mechanism 3 is used to transfer the core reinforcement group S pre-placed on the core reinforcement positioning mechanism 1 to the lower mold 22 and position it on the lower mold 22 so that the core reinforcement is in a suitable position on the lower mold 22, so that after injection molding, the plastic can wrap the core reinforcement to form a seat P that meets the requirements. The core reinforcement placement mechanism 3 disclosed in this embodiment includes a fixing frame 31, a gripping component 32, and a position detection component 33. The fixing frame 31 is used to connect with a robot arm. In this embodiment, the robot arm is preferably an industrial robot, which is connected to the fixing frame 31 through a quick-connect coupling. The robot arm drives the core reinforcement placement mechanism 3 to move between the core reinforcement positioning mechanism 1 and the lower mold 22. The gripping component 32 is located below the fixing frame 31 and is used to grip the core reinforcement group S on the core reinforcement positioning mechanism 1 and place the core reinforcement on the lower mold 22. The detection component is located between the fixing frame 31 and the gripping component 32 and is used to detect the placement position of the core reinforcement group S on the lower mold 22.

[0046] The seat P production equipment with embedded core ribs disclosed in this application, by setting a core rib positioning mechanism 1, can pre-position and place the first core rib S1 and the second core rib S2 to form a core rib group S to be embedded into the seat P. A robotic arm drives a core rib placement mechanism 3 to move between the core rib positioning mechanism 1 and the lower mold 22, and a gripping component 32 grips the core rib group S on the core rib positioning mechanism 1 and transfers it to the lower mold 22 for one-time placement of the core rib group S. The core rib group S is mechanically placed on the lower mold 22. The single-stage oscillation greatly improves the placement efficiency of the core ribs on the lower mold 22. By setting a detection component between the fixed frame 31 and the gripping component 32, after the core rib group S is placed on the lower mold 22, the detection component detects the placement position of the core rib group S on the lower mold 22 to ensure that the upper mold 21 and the lower mold 22 can be closed for injection molding only after the core rib group S is placed in place. This not only meets the high-efficiency production of the seat P, but also improves the placement accuracy of the core ribs on the lower mold 22 and ensures the safety of the injection mold 2.

[0047] This application is also implemented through the following technical solutions.

[0048] In order to position and arrange the first core rib S1 and the second core rib S2 to form a core rib group S so that the core rib placement mechanism 3 can grab them at once and place them in the lower mold 22, this embodiment shows a preferred implementation of the core rib positioning mechanism 1. Specifically, the core rib positioning mechanism 1 includes a base plate 11 and a first positioning seat 12, a second positioning seat 13 and a third positioning seat 14 that are fixedly arranged at intervals on the base plate 11.

[0049] In this embodiment, the core rib positioning mechanism 1 is located on the outside of the injection molding equipment. The bottom of the core rib positioning mechanism 1 can be reciprocated by installing a linear mold. When it is necessary to manually place the core rib on the core rib positioning mechanism 1, the core rib positioning mechanism 1 moves from inside the injection molding equipment to the outside of the injection molding equipment. After the core rib is placed, the core rib positioning mechanism 1 moves back into the injection molding equipment, so that the robot arm can drive the core rib placement mechanism 3 to grab the core rib group S on the core rib positioning mechanism 1.

[0050] The first positioning seat 12, the second positioning seat 13, and the third positioning seat 14 cooperate to position and place multiple spaced-apart first core bars S1. The spaced arrangement of the first positioning seat 12, the second positioning seat 13, and the third positioning seat 14 facilitates the horizontal overlapping of the core bars onto the positioning seats. Simultaneously, the spaced arrangement of the positioning seats accommodates the free deformation of the core bars, allowing the bent or deformed portions of the core bars to be positioned between the positioning seats, thus making efficient use of space. The first positioning seats 12, the second positioning seat 13, and the third positioning seat 14 are provided with first positioning grooves 100 spaced along their length for placing the first core bars S1. The first positioning grooves 100 at the same position along the length of the positioning seats are linearly aligned, allowing the first core bars S1 to be placed into the first positioning grooves 100 of the positioning seats at various positions along their length. A second positioning groove 141 is provided on the third positioning seat 14 along its length direction. The second positioning groove 141 is used to place a second core rib S2 perpendicular to the first core rib S1. In this embodiment, the core ribs are placed in the following order: the first core rib S1 is placed first, and then the second core rib S2 is placed. The second core rib S2 is placed horizontally in the second positioning groove 141, and the second core rib S2 is pressed on top of the first core rib S1.

[0051] To position the two ends of the first core rib S1 along its length and ensure that multiple first core ribs S1 are aligned after placement, the core rib positioning mechanism 1 of this embodiment further includes an overlapping rod 15 horizontally disposed outside the first positioning seat 12 and the third positioning seat 14. The overlapping rod 15 is used to overlap the two ends of the first core rib S1 along its length. Thus, the two ends of the first core rib S1 along its length are respectively overlapped onto the overlapping rod 15, and the middle part of the first core rib S1 can be sequentially placed into the first positioning groove 100 on the first positioning seat 12, the second positioning seat 13, and the third positioning seat 14. The overlapping rod 15 is provided with first sensing elements 151 at intervals for detecting the position of the first core rib S1. By setting the first sensing elements 151, it can be determined whether the first core rib S1 is placed in the above-mentioned positioning seat. That is, when the first sensing elements 151 detect the two ends of the first core rib S1 along its length, it means that the first core rib S1 is placed in place. The second positioning groove 141 is provided with a second sensing element 142 for detecting the position of the second core rib S2. By setting the second sensing element 142, it can be determined whether the second core rib S2 is placed in the third positioning seat 14. That is, when the second sensing element 142 detects both ends of the second core rib S2 in the length direction, it means that the second core rib S2 is placed in place.

[0052] In some preferred embodiments, both the first positioning groove 100 and the second positioning groove 141 are configured as V-shaped structures. With this configuration, when the core ribs are manually pre-positioned, the first core rib S1 and the second core rib S2 can automatically slide into the positioning grooves when they are placed into the first positioning groove 100 and the second positioning groove 141, since the cross-section of the first core rib S1 is circular. This allows for quick positioning of the first core rib S1 and the second core rib S2, ensuring the relative positional accuracy of the first core rib S1 and the second core rib S2.

[0053] It is worth noting that in this embodiment, multiple sets of core rib positioning mechanisms 1 can be set on the outside of the injection molding equipment. In this way, the speed of manual placement of core ribs is greater than the injection time of seat P, thereby meeting the cycle time of core rib group S gripping operation. By manually placing and positioning the core rib group S, the relative positional accuracy of the first core rib S1 and the second core rib S2 on the core rib positioning mechanism 1 can be ensured. When the gripping component 32 grips the core rib group S and transfers it to the lower mold 22 in one go, the placement accuracy of the core rib group S on the lower mold 22 in one go can be improved.

[0054] Since the first core rib S1 and the second core rib S2 are only overlapped vertically and do not form a rigid connection, and the second core rib S2 and the multiple first core ribs S1 are vertically connected, it is necessary to grasp the first core rib S1 and the second core rib S2 from different angles. This embodiment shows a preferred implementation of the grasping component 32. Specifically, the grasping component 32 includes a mounting plate 321 floating below the fixed frame 31 and multiple sets of first clamping devices 322 and second clamping devices 323 fixedly and spaced apart on the mounting plate 321. The first clamping devices 322 and the second clamping devices 323 cooperate with each other to pick up and put down the core rib group S. In this embodiment, the first clamping device 322 is used to grasp the first core rib S1, and the second clamping device 323 is used to grasp the second core rib S2.

[0055] This embodiment shows a preferred implementation of the first clamping device 322. Specifically, the first clamping device 322 includes a first gripper 3221 and a first positioning rod 3222 fixedly mounted on the mounting plate 321. Two first grippers 3221 are spaced apart and are used to clamp both ends of the first core rib S1 along its length. Multiple first positioning rods 3222 are spaced apart and are used to abut against each position of the first core rib S1 along its length. The first positioning rod 3222 is provided with a first limiting groove 3222a that matches the surface contour of the first core rib S1. In this embodiment, the distance between the two first grippers 3221 and the distance between the two positioning rods are matched. In this way, when gripping the first core rib S1, the first positioning rod 3222 first abuts against the surface of the first core rib S1 vertically, fixing the first core rib S1 on the first positioning seat 12, the second positioning seat 13 and the third positioning seat 14, preventing the first core rib S1 from being displaced due to its own elastic deformation. Then, the first grippers 3221 clamp both ends of the first core rib S1, thereby ensuring the clamping position of the first grippers 3221 on the first core rib S1 and improving the clamping accuracy. By setting the first limiting groove 3222a on the first positioning rod 3222, when the first grippers 3221 clamp the first core rib S1, the first positioning rod 3222 abuts against the first core rib S1, and the first core rib S1 is accommodated in the first limiting groove 3222a, which can prevent the first core rib S1 from rotating.

[0056] This embodiment illustrates a preferred implementation of the second clamping device 323. Specifically, the second clamping device 323 includes a second gripper 3231, a second positioning rod 3232, and a lifting magnetic attraction device 3233, all fixedly mounted on the mounting plate 321. Two lifting magnetic attraction devices 3233 are spaced apart and located in the two outermost first clamping devices 322. The two lifting magnetic attraction devices 3233 are used to attract the two ends of the second core rib S2 perpendicular to the length direction of the first core rib S1. By positioning the lifting magnetic attraction devices 3233 in the first... In the clamping device 322, when the first clamping device 322 clamps the first core rib S1, the lifting magnetic suction device 3233 is exactly corresponding to the end of the second core rib S2 along its length. At this time, since the two ends of the second core rib S2 along its length overlap the first core rib S1, the lifting cylinder in the lifting magnetic suction device 3233 drives the magnetic suction component to extend, thereby adsorbing the end of the second core rib S2 along its length. Here, the magnetic force replaces the clamping, which can avoid the clamping hand from interfering with the first core rib S1 during the clamping process, or causing the first core rib S1 to be not firmly clamped.

[0057] The second gripper 3231 is used to clamp the middle of the second core rib S2. The second gripper 3231 and the lifting magnetic suction device 3233 work together to achieve stable clamping and fixing of the second core rib S2. Multiple second positioning rods 3232 are spaced apart, each used to support the second core rib S2 at various positions along its length. Each second positioning rod 3232 has a second limiting groove 3232a that matches the surface contour of the second core rib S2. The function of the second positioning rod 3232 is the same as that of the first positioning rod 3222, and the function of the second limiting groove 3232a is the same as that of the first limiting groove 3222a; these will not be elaborated further here.

[0058] To ensure that the gripping component 32 can completely grip the core rib assembly S, in this embodiment, a third sensing element 324 and a fourth sensing element 325 are also fixedly installed on the mounting plate 321. The third sensing element 324 is used to detect the position of both ends of the first core rib S1 along its length, and the fourth sensing element 325 is used to detect the position of both ends of the second core rib S2 along its length. The third sensing element 324 and the fourth sensing element 325 can detect whether the first core rib S1 and the second core rib S2 have been gripped in place.

[0059] If any of the third sensing elements 324 or the fourth sensing element 325 fails to detect a position signal, it indicates that a core rib has not been properly gripped. In this case, the gripped core rib group S can be repositioned onto the core rib positioning mechanism 1 by the core rib placement mechanism 3, and the gripping process can be repeated until both the third sensing element 324 and the fourth sensing element 325 detect a position signal, which means that all core ribs have been gripped properly.

[0060] In the above embodiments, the first sensing element 151, the second sensing element 142, the third sensing element 324 and the fourth sensing element 325 are proximity switches or photoelectric sensors.

[0061] To ensure the positioning accuracy of the core rib assembly S on the lower mold 22, this embodiment shows a preferred implementation of the detection component. Multiple detection components are evenly distributed between the fixed frame 31 and the mounting plate 321. Each detection component includes a sleeve 331, a guide rod 332, an elastic element 333, a limiting element 334, and a position sensor 335. The sleeve 331 is fixedly mounted on the fixed frame 31. One end of the guide rod 332 is vertically and fixedly connected to the mounting plate 321, and the other end passes through the sleeve 331 and is fixedly connected to the limiting element 334. The elastic element 333 is sleeved on the guide rod 332 between the fixed frame 31 and the mounting plate 321. The position sensor 335 is fixedly mounted on the side of the fixed frame 31 away from the mounting plate 321 and is used to detect the displacement of the limiting element 334 relative to the sleeve 331.

[0062] Specifically, the core reinforcement placement mechanism 3, driven by the robotic arm, grasps the core reinforcement group S. When placing the core reinforcement group S onto the lower mold 22, the robotic arm first drives the core reinforcement placement mechanism 3 to stop at a predetermined position on the surface of the lower mold 22, aligning the core reinforcement group S with the placement groove on the lower mold 22. The robotic arm then drives the core reinforcement placement mechanism 3 to press down. At this point, the system defaults to a certain downward stroke, causing the core reinforcement to fall completely into the placement groove. When the core reinforcement placement mechanism 3 presses down, the first gripper 3221 and the second gripper 3231 release, and the first positioning rod 3222 and the second positioning rod 32... 32 always holds the core reinforcement group S. During the pressing process of the core reinforcement placement mechanism 3, the system will specify a certain stroke to be pressed down, that is, to determine that the core reinforcement group S is placed in the placement slot. Since the first positioning rod 3222 and the second positioning rod 3232 always hold the core reinforcement group S, when the core reinforcement placement mechanism 3 is pressed down, the gripping component 32 moves upward relative to the fixed frame 31. The gripping component 32 drives the guide rod 332 to move upward relative to the sleeve 331. When the limiting member 334 moves to the system default stroke and is detected by the position sensor 335, it means that the core reinforcement group S is placed in place. If there are foreign objects in the placement slot of the current mold 22, or if there is a deviation between the core rib assembly S and the placement slot, the movement of the first positioning rod 3222 and the second positioning rod 3232 will be obstructed by the foreign objects or the surface of the lower mold 22. When the core rib placement mechanism 3 presses down, the gripping component 32 will be lifted by a certain stroke. If the system continues to press down to the default stroke, the limit component 334 will be detected in advance by the position sensor 335. This indicates that there are foreign objects in the placement slot of the lower mold 22 or that there is a deviation between the core rib assembly S and the placement slot.

[0063] At this time, the gripping component 32 will grab the core rib group S from the lower mold 22 again, place it and check it. If the requirements are met, it means that the core rib group S is placed in the lower mold 22 in a proper position, and then the upper mold 21 and the lower mold 22 can be safely closed. If the misalignment is still detected after three consecutive repeated placements, an alarm will be triggered for manual intervention.

[0064] This invention discloses a method for producing a seat P with an embedded core rib, comprising the following steps:

[0065] S1. The first core rib S1 and the second core rib S2 are prepositioned and placed on the core rib positioning mechanism 1 so that the first core rib S1 and the second core rib S2 are combined into a core rib group S that needs to be embedded in the seat P.

[0066] S2. The core bar placement mechanism 3 is driven by a robotic arm to move between the core bar positioning mechanism 1 and the lower mold 22. The core bar group S on the core bar placement mechanism 3 is picked up and transferred to the fixed position of the lower mold 22 by the gripping component 32.

[0067] S3. After the core rib assembly S is placed in the fixed position of the lower mold 22, the gripping component 32 of the core rib placement mechanism 3 is driven by the robot to press down the core rib assembly S. When the detection component detects that the displacement of the gripping component 32 relative to the fixed frame 31 meets the design requirements, it is determined that the core rib assembly S is correctly placed in the lower mold 22. The upper mold 21 and the lower mold 22 are closed to perform the injection molding of the core rib embedded in the seat P.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chair manufacturing equipment with embedded core ribs, characterized in that, include: The core reinforcement positioning mechanism (1) is used to position the core reinforcement group (S) composed of the first core reinforcement (S1) and the second core reinforcement (S2); Injection mold (2), the injection mold (2) includes an upper mold (21) and a lower mold (22) that cooperate with each other to achieve injection molding of the seat (P); The core reinforcement placement mechanism (3) includes a fixed frame (31), a gripping component (32), and a detection component (33). The fixed frame (31) is used to connect with the robot arm. The gripping component (32) is located below the fixed frame (31) and is used to grip the core reinforcement group (S) on the core reinforcement positioning mechanism (1) and place the core reinforcement on the lower mold (22). The detection component is located between the fixed frame (31) and the gripping component (32) and is used to detect the placement position of the core reinforcement group (S) on the lower mold (22). The core reinforcement positioning mechanism (1) includes a base plate (11) and a first positioning seat (12), a second positioning seat (13) and a third positioning seat (14) fixedly arranged at intervals on the base plate (11). The first positioning seat (12), the second positioning seat (13) and the third positioning seat (14) cooperate with each other to position and place multiple spaced first core reinforcements (S1). The first positioning seat (12), the second positioning seat (13) and the third positioning seat (14) are provided with first positioning grooves (100) for placing the first core reinforcements (S1) at intervals along their length direction. The third positioning seat (14) is provided with a second positioning groove (141) along its length direction. The second positioning groove (141) is used to place a second core reinforcement (S2) perpendicular to the first core reinforcement (S1). The gripping component (32) includes a mounting plate (321) floating below the fixed frame (31) and multiple sets of first clamping devices (322) and second clamping devices (323) fixedly mounted on the mounting plate (321) at intervals. The first clamping devices (322) and the second clamping devices (323) cooperate with each other to pick up and put down the core rib group (S). The first clamping device (322) includes a first clamp (3221) and a first positioning rod (3222) fixedly mounted on the mounting plate (321). There are two first clamps (3221) spaced apart, which are used to clamp the two ends of the first core rib (S1) in the length direction. There are multiple first positioning rods (3222) spaced apart, which are used to abut against each position in the length direction of the first core rib (S1). The first positioning rod (3222) is provided with a first limiting groove (3222a) that matches the surface contour of the first core rib (S1). Multiple detection components are provided, and the multiple detection components are evenly distributed between the fixed frame (31) and the mounting plate (321). The detection components include a sleeve (331), a guide rod (332), an elastic element (333), a limiting element (334), and a position sensor (335). The sleeve (331) is fixedly mounted on the fixed frame (31). One end of the guide rod (332) is vertically fixedly connected to the mounting plate (321), and the other end passes through the sleeve (331) and is fixedly connected to the limiting element (334). The elastic element (333) is sleeved on the guide rod (332) between the fixed frame (31) and the mounting plate (321). The position sensor (335) is fixedly mounted on the side of the fixed frame (31) away from the mounting plate (321) and is used to detect the displacement of the limiting element (334) relative to the sleeve (331).

2. The chair manufacturing equipment with embedded core ribs as described in claim 1, characterized in that: The core reinforcement positioning mechanism (1) further includes an overlapping rod (15) horizontally arranged outside the first positioning seat (12) and the third positioning seat (14). The overlapping rod (15) is used to overlap the two ends of the first core reinforcement (S1) in the length direction. The overlapping rod (15) is provided with a first sensing element (151) for detecting the position of the first core reinforcement (S1) at intervals. The second positioning groove (141) is provided with a second sensing element (142) for detecting the position of the second core reinforcement (S2).

3. The chair manufacturing equipment with embedded core ribs as described in claim 1, characterized in that: Both the first positioning groove (100) and the second positioning groove (141) are configured as V-shaped structures.

4. The chair manufacturing equipment with embedded core ribs as described in claim 1, characterized in that: The second clamping device (323) includes a second gripper (3231), a second positioning rod (3232), and a lifting magnetic suction device (3233) fixedly mounted on the mounting plate (321). Two lifting magnetic suction devices (3233) are spaced apart and located in the two outermost first clamping devices (322). The two lifting magnetic suction devices (3233) are used to attract the two ends of the second core rib (S2) perpendicular to the length direction of the first core rib (S1). The second gripper (3231) is used to clamp the middle part of the second core rib (S2). Multiple second positioning rods (3232) are spaced apart and are used to abut against each position in the length direction of the second core rib (S2). The second positioning rod (3232) is provided with a second limiting groove (3232a) that matches the surface contour of the second core rib (S2).

5. The chair manufacturing equipment with embedded core ribs as described in claim 1, characterized in that: The mounting plate (321) is also fixedly provided with a third sensing element (324) and a fourth sensing element (325). The third sensing element (324) is used to detect the position of both ends of the first core rib (S1) in the length direction, and the fourth sensing element (325) is used to detect the position of both ends of the second core rib (S2) in the length direction.

6. A method for producing a seat (P) with embedded core ribs, utilizing the seat production equipment with embedded core ribs as described in claim 1, characterized in that, The following steps are included: S1. The first core rib (S1) and the second core rib (S2) are prepositioned and placed on the core rib positioning mechanism (1) so that the first core rib (S1) and the second core rib (S2) are combined into a core rib group (S) that needs to be embedded in the seat (P). S2. The core bar placement mechanism (3) is driven by a robotic arm to move between the core bar positioning mechanism (1) and the lower mold (22). The core bar group (S) on the core bar placement mechanism (3) is picked up and transferred to the fixed position of the lower mold (22) by the gripping component (32). S3. After the core rib assembly (S) is placed in the fixed position of the lower mold (22), the gripping component (32) of the core rib placement mechanism (3) is driven by the robot to press down the core rib assembly (S). When the detection component detects that the displacement of the gripping component (32) relative to the fixed frame (31) meets the design requirements, it is determined that the core rib assembly (S) is correctly placed in the lower mold (22). The upper mold (21) and the lower mold (22) are closed to perform core rib injection molding of the seat (P).

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