Automated cutting and corner injection molding integrated production line for weatherstrips and working method

Abstract

An automated cutting and corner injection molding integrated production line for weatherstrips and a working method. The production line comprises at least one transportation line, a transfer robot, a strip mounting metal plate, a strip inserting clamp, an injection molding press, an automatic top strip feeding device and an automatic soft strip feeding device, wherein the transportation line is arranged on one side of the injection molding press, and the transfer robot cooperates with the transportation line and the injection molding press; the injection molding press is provided with a corner injection molding mold, the corner injection molding mold comprises a lower mold mechanism and an upper mold mechanism, the upper mold mechanism is arranged above the lower mold mechanism, and the lower mold mechanism is provided with a first mold cavity and a second mold cavity; and the automatic top strip feeding device and the automatic soft strip feeding device are arranged at the top strip and soft strip feeding portions of the lower mold mechanism, respectively. In the present invention, the weatherstrips are transported and interactively transferred by means of the strip mounting metal plate, the strip inserting clamp, the transportion line, the transfer robot, the automatic top strip feeding device and the automatic soft strip feeding device, so that the production processes are connected in series to form a production line, thereby improving the automation level of the corner injection molding of the weatherstrips.

Description

Automated production line and working method for sealing strip cutting and injection molding corner splicing Technical Field

[0001] This invention belongs to the field of sealing strip processing technology, and specifically relates to an automated production line and working method for sealing strip cutting and injection molding corner splicing. Background Technology

[0002] With the rapid development of my country's automobile industry, the scale of automobile production is becoming increasingly large, and as a component of automobiles, the demand for sealing strips is also increasing. A complete set of sealing strips requires two production processes, cutting and injection molding, to form a finished product. Traditionally, the equipment for cutting and injection molding sealing strips is usually located in two different places to complete their respective processes. This requires multiple teams of people to operate the equipment for these two processes and to transport products across different sites, increasing production costs and reducing efficiency. More and more cars are adopting a cornered design for their C-pillars. However, since the sealing strip itself is straight, it cannot be made into a cornered shape on its own. Therefore, it is necessary to join two sealing strips together to form one, and then join it with the main guide groove sealing strip to complete the corner forming of the entire C-pillar. In the past, this type of C-pillar mold was divided into two separate molds, one for the two sealing strips with corners and the other for the main guide groove sealing strip and the sealing strip with corners. This means that to produce a complete C-pillar product, two separate molds and two injection molding presses are required, resulting in a large production investment. In addition, operators need to move and clamp the product between the two injection molding presses twice, which is time-consuming and labor-intensive.

[0003] Currently, in actual production, to improve production efficiency, integrated corner molds are used, where two corners are joined simultaneously in one go. However, because the two sealing strips with corner shapes are soft and cannot maintain their folded state, and the lips on the sealing strips are prone to bending and deformation, and because the insert clamp itself is the corner joint point of the corner shape, it is heavy, making it difficult for operators to maintain the shape while pushing the insert clamp with sealing strips into the mold cavity, increasing the processing difficulty; when inserting the top sealing strip in the injection molding process, the operator needs to pre-install the strip on the mold, and then insert the sealing strip into the mold cavity through the insertion mechanism on the mold. Furthermore, since the two ends of the same sealing strip need to be joined on two different molds, the operator needs to pre-install the strip twice. During the injection molding process of sealing strips, the more complex the structure of the sealing strip, the more complex the mold cavity during molding. In the past, when the corner mold was demolded, most of the molding structures were lateral and moved away from the sealing strip. However, the mold cavity of the insert plate assembly was in the shape of a hook with the lip on the sealing strip. This caused the insert plate assembly to pull the lip on the sealing strip back when it was lateral and moved back, which may have pulled and torn the corner of the sealing strip lip, resulting in the scrap of the molded sealing strip and increasing the scrap rate of production. Summary of the Invention

[0004] Purpose of the Invention: To overcome the above shortcomings, the purpose of this invention is to provide an integrated production line for automated cutting and injection molding of sealing strips. The sealing strips to be processed are transported to a designated location via a conveyor line. A handling robot transports the sheet metal strips or sealing strip insert clamping assemblies to the corresponding injection molding molds. Automatic feeding devices for the top strip and soft strip are used to automatically feed the top strip and soft strip respectively. The product is then pushed into the mold for automatic injection molding of the corners. This process of conveying and circulating the sealing strips requiring corner joints connects the entire sealing strip production process, forming a production line that improves the automation level of sealing strip injection molding and corner jointing, effectively increasing production efficiency.

[0005] Technical Solution: To achieve the above objectives, this invention provides an integrated production line for injection molding corner joints of sealing strips, comprising: at least one transport line, a handling robot, a sheet metal assembly for installing top strips, a strip clamp for installing flexible strips, and an injection press. The transport line is located on one side of the injection press, and the handling robot cooperates with the transport line and the injection press. The injection press is equipped with an injection molding corner joint mold, which includes a lower mold mechanism and an upper mold mechanism. The upper mold mechanism is located above the lower mold mechanism, and the two cooperate with each other. The lower mold mechanism is provided with a first mold cavity and a second mold cavity. It also includes an automatic top strip feeding device and an automatic flexible strip feeding device, which are respectively located at the top strip and flexible strip feeding points of the lower mold mechanism. During operation, the sheet metal assembly with the top strip is... The ejector bar and its supporting sheet metal are placed on a transport line, which delivers them to the loading position of the injection molding press. A handling robot transfers the ejector bar and its supporting sheet metal to an automatic ejector bar feeding device, which pushes the sheet metal containing the ejector bar forward until one end of the ejector bar enters the designated position in the second mold cavity. Simultaneously, a insert fixture containing a flexible strip is placed on the transport line, which delivers it to the loading position of the injection molding press. A handling robot transfers the insert fixture containing the flexible strip to an automatic flexible strip feeding device, which pushes it forward until one end of the flexible strip reaches the designated position in the first mold cavity. The ejector bar and flexible strip are then injection molded into corners using an injection molding corner-joining mold. The finished product is then transported to a designated position via a finished product conveyor and inspection / packaging line.

[0006] The lower mold mechanism includes a first lower mold assembly and a second lower mold movable plate. The second lower mold movable plate is located above the first lower mold assembly, and the two are connected by a lifting mechanism. A lifting drive mechanism for lifting the second lower mold movable plate is located outside the first lower mold assembly. The second lower mold movable plate has a lower mold extension section, and the lower mold extension section has a first sliding groove. A sliding block is located in the first sliding groove, and the shape of the first sliding groove can be adjusted as needed. The automatic strip feeding device includes a strip insertion power mechanism and a strip insertion sheet metal clamp. The strip insertion power mechanism includes a first strip insertion drive mechanism, a drive connector, and a power connection block. The strip insertion sheet metal clamp is located on the lower mold extension section, the strip insertion power mechanism is located below the lower mold extension section, and the strip feeding sheet metal is located above the strip insertion sheet metal clamp. The first strip insertion drive mechanism is connected to the lower mold extension section through a mounting base. The output end of the first strip insertion drive mechanism is connected to the power connection block through a drive connector. The power connection block is located below the sliding block and is simultaneously connected to the strip feeding sheet metal through a power rotating column.

[0007] In addition, the injection molding corner mold also includes a demolding mechanism, which is located on the lower mold mechanism and cooperates with the automatic ejector bar feeding device and the automatic soft strip feeding device. The lower mold mechanism is also provided with an installation platform, which is inclined. The installation platform is provided with a set of guide grooves, and a set of first limiting blocks is provided on the outside of the guide grooves. A set of second limiting blocks is provided on the end of the installation platform away from the insert power drive mechanism. An inclined ejector block is provided on one side of the lower mold mechanism located on the installation platform. A support block is provided on one side of the lower mold mechanism located on the first mold cavity. An insert plate mechanism and a slider assembly are respectively provided on both sides of the lower mold mechanism located on the second mold cavity. A second slider is provided on the side of the second mold cavity opposite to the slider assembly.

[0008] Preferably, the automatic soft strip feeding device includes a strip insertion power drive mechanism, which is disposed on the lower mold mechanism and installed at the lower end of the mounting platform; the output end of the strip insertion power drive mechanism is connected to the strip insertion clamp; the strip insertion power drive mechanism includes a sliding guide mounting plate, which has a sliding groove, a power slider in the sliding groove, and a set of limiting pressure blocks on both sides of the power slider; the strip insertion drive mechanism is connected to the lower mold mechanism through a mounting base, and its output end is connected to the power slider through a flange connecting block; the strip insertion clamp is disposed on the mounting platform and connected to the power slider.

[0009] Furthermore, the insert clamp includes a clamp base plate, a set of guide blocks, an insert plate assembly, a slider, and a pressing mechanism. The clamp base plate has a lower mold cavity, and a slide rail assembly is located on one side of the lower mold cavity. The pressing mechanism is connected to the slide plate inside the slide rail assembly. The guide blocks are located below the clamp base plate and are slidably connected to the guide groove. The insert plate assembly and the slider are located opposite each other on both sides of the lower mold cavity, and the slider is slidably connected to the slide rail assembly. The pressing mechanism is located on one side of the slider. The insert plate assembly includes an upper insert plate assembly and a lower insert plate assembly. The upper insert plate assembly is located above the lower insert plate assembly and is hinged to the lower mold mechanism via a transition frame. The lower insert plate assembly is slidably connected to the second lower mold movable plate. The pressing block mechanism includes a flipping base, a flipping connecting block, and a pressing block. The flipping base is mounted on the lower mold mechanism, and one side of the flipping base is connected to a slide rail assembly via a connecting block. The flipping connecting block is located on the flipping base, with a roller at one end and a connection to the pressing block at the other end. The roller is located above the inclined top block and moves along the inclined top block. The mechanism also includes a reciprocating transport platform, which cooperates with a handling robot.

[0010] Furthermore, the insert plate mechanism is mounted on the lower mold mechanism and is movably connected to the lower mold mechanism; the insert plate mechanism includes a lower insert plate module, a middle insert plate module, and an upper insert plate module, which are arranged from bottom to top, and are movably connected to the slide rails on the lower mold mechanism on both sides through sliding frames; the shapes of the ends of the lower insert plate module, the middle insert plate module, and the upper insert plate module match the shape of the sealing strip; the upper insert plate module includes a first upper insert plate, a second upper insert plate, and a third upper insert plate, all of which are U-shaped, with the second upper insert plate located inside the first upper insert plate and the third upper insert plate located inside the second upper insert plate.

[0011] Preferably, the demolding mechanism includes a first demolding mechanism, a second demolding mechanism, and a third demolding mechanism. The first demolding mechanism includes a first demolding power mechanism, the output end of which is provided with a first demolding connecting rod. The first demolding connecting rod is connected to the insert plate assembly, the slider, and the pressure block mechanism, and is used to drive the insert plate assembly and the pressure block mechanism to flip up and the slider to move. The output end of the first demolding power mechanism is connected to the insert plate assembly, the slider, and the pressure block mechanism, and is used to drive the insert plate assembly and the pressure block mechanism to flip up and the slider 8414 to move. The second demolding mechanism includes a second demolding power mechanism, the output end of which is provided with a second demolding connecting rod. The second demolding connecting rod is connected to the insert plate mechanism and the lower insert plate assembly, and is used to move the insert plate mechanism and the lower insert plate assembly. The third demolding mechanism includes a third demolding power mechanism. The output end of the third demolding power mechanism is provided with a third demolding connecting rod for driving the movement of the slider and the second slider in the slider assembly. The first demolding connecting rod is provided with a first adapter block at one end near the first demolding power mechanism. The first adapter block is provided with an opening slot. The slide plate in the slide rail assembly is provided with a connecting rod, which is located in the opening slot. The end of the second demolding connecting rod is located at a second adapter block. The second adapter block is provided with a drive module for driving the insert plate mechanism. The drive part of the drive module is located in the corresponding grooves of the lower insert plate module and the middle insert plate module of the insert plate mechanism. The end of the second demolding connecting rod is provided with a through hole. The third adapter block is located in the through hole. The other end of the third adapter block is connected to a power rod hook for driving the movement of the insert plate assembly. The lower part of the insert plate assembly is connected to the power rod hook through a connecting rod. The middle insert plate module is provided with a set of fixed seats, and the fixed seats are provided with a set of positioning bolts. During demolding, the second demolding linkage drives the second adapter block to move the driving part of the driving module forward. Since the second adapter block and the third adapter block are both connected to the second demolding linkage, when the second demolding linkage drives the second adapter block to move the driving part of the driving module, it will drive the insert plate mechanism and the lower insert plate in the lower insert plate assembly to move away from the mold cavity along the power direction. The third demolding linkage includes a third demolding linkage main rod and a third demolding linkage branch rod. The third demolding linkage branch rod is located on one side of the third demolding linkage main rod, and a connecting rod is provided between the two. The two ends of the connecting rod are respectively provided with waist holes. The third demolding linkage main rod and the third demolding linkage branch rod are connected to the corresponding waist holes through a connecting shaft. The sliding plate in the slider assembly is connected to the corresponding connecting shaft. The connecting shaft is located in the waist hole at one end of the connecting rod. The second slider is located at the end of the third demolding linkage main rod. During operation, the third demolding power mechanism drives the third demolding linkage to extend. During the extension of the third demolding linkage, the second slider will be driven to move away from the mold cavity along the power direction. At the same time, the connecting shaft on the main rod of the third demolding linkage and the branch rod of the third demolding linkage moves in the waist hole. During this process, the slide plate in the slider assembly drives the slider assembly to retract, so that the mold cavity is in the open state.

[0012] Additionally, an auxiliary demolding mechanism is included. This auxiliary demolding mechanism comprises a third slider, a drive frame, and an auxiliary demolding drive mechanism. A mounting plate is provided at one end of the lower mold extension section on the second lower mold movable plate. A second sliding groove is provided on the mounting plate. The third slider is located above the mounting plate and on one side of the slider assembly. The auxiliary demolding drive mechanism comprises a first sliding plate, an auxiliary drive frame, and a demolding drive cylinder. The first sliding plate is located within the sliding groove of the second lower mold movable plate, and a set of slide rails are provided opposite to each other on both sides of the sliding groove. The output end of the demolding drive cylinder is connected to the first sliding plate. One end of the auxiliary drive frame is connected to the first sliding plate, and the other end has a through hole extending above the second sliding groove. The drive frame is inserted into the through hole of the auxiliary drive frame and extends into the second sliding groove, and the drive frame is connected to the third slider.

[0013] Preferably, the insert sheet metal fixture includes a first fixture base plate, one side of which is provided with at least one set of first positioning members and second positioning members. The first positioning member is provided with a positioning groove, and the second positioning member is provided with a central cross positioning groove. It also includes a sheet metal fixing assembly, which includes a sheet metal pressing block and a pressing block driving cylinder. The pressing block driving cylinder is disposed on the first fixture base plate, and its output end is connected to the sheet metal pressing block.

[0014] It also includes a sealing strip positioning assembly, which includes a positioning drive cylinder and an elbow clamp positioning assembly. The positioning drive cylinder is located on the base plate of the first clamp, and the elbow clamp positioning assembly is connected to the output end of the positioning drive cylinder.

[0015] The present invention also includes an automated production line for cutting and injection molding corners of sealing strips, comprising an integrated production line for injection molding corners of sealing strips, and further comprising a soft strip punching device 1, a soft strip punching device 2, a top strip punching device, a first transport line for conveying soft strips, and a first injection molding press. The soft strip punching device 1, the soft strip punching device 2, the top strip punching device, the first transport line for conveying soft strips, and the first injection molding press are respectively located at corresponding processing stations. The soft strip punching device 1 is located on one side of the first transport line, and a soft strip and soft strip clamping table is provided between the two. The handling robot cooperates with the transport line, the first transport line, the first injection molding press, the injection molding press, the finished product conveying and inspection packaging line.

[0016] As can be seen from the above technical solution, the present invention has the following beneficial effects: 1. The integrated production line for injection molding corner joints of sealing strips described in the present invention transports the sealing strips to be processed to a designated position via a transport line. A handling robot transports the sheet metal strip or sealing strip insert clamp assembly to the corresponding injection molding corner joint mold. The automatic feeding device for the top strip and the automatic feeding device for the soft strip are used to realize the automatic feeding of the top strip and the soft strip respectively. The product is pushed into the mold for automatic injection molding corner joints. The sealing strips that need to be joined are transported and exchanged, so that the production process of the sealing strip is connected in series to form a production line, improving the automation level of injection molding corner joints of sealing strips and effectively improving its production efficiency.

[0017] 2. In this invention, the injection molding corner joint mold integrates two corner joint molds into one mold and uses an automated strip insertion system to insert corner sealing strips into the main body mating cavity. This allows two parts that originally needed to be joined separately to be joined at the same time on one mold, thus avoiding the need for manual demolding and strip insertion multiple times, improving work efficiency. Furthermore, by combining them into one mold, some common parts and one injection molding press are reduced, thus lowering production costs.

[0018] 3. By coordinating the soft strip and the insert strip power mechanism, the top strip sealing strip is inserted into the mold cavity with an arc, realizing automated strip insertion. This effectively solves the current problem of difficult strip insertion. Furthermore, since the sealing strip is installed on the insert strip sheet metal fixture in one go, the original step of manually installing the strip again when connecting the other end to the mold can be eliminated. When it is necessary to connect the other end of the top strip sealing strip to the mold, the handling robot only needs to dock the other end of the insert strip sheet metal fixture with another mold, thereby reducing the need for multiple manual strip installations and improving production efficiency.

[0019] 4. The automatic soft strip feeding device of the present invention optimizes the structure of the mold. The pressing block mechanism on the insert clamp and the upper and lower cooperation of the support block keep the sealing strip to be inserted into the main mold cavity in a folded state. Then, the automatic pushing device pushes the insert clamp to guide the sealing strip into the mold cavity under the guidance of the staggered guide structure of the mold cavity insert plate, thereby meeting the insert requirements of the integrated mold corner, reducing the number of manual inserts, and improving the degree of automation and production efficiency.

[0020] 5. The insert plate mechanism includes a lower insert plate module, a middle insert plate module, and an upper insert plate module. It adopts a multi-layer insert plate, and the sealing strip can be staggered in layers when it is inserted. This way, there are gaps according to the shape of the sealing strip when it is inserted, which facilitates better insertion. The insert plate assembly and the slider assembly are set so that when the sealing strip enters the mold cavity, the sealing strip is guided into the receiving mold cavity by the cooperation of the guide on the insert plate assembly, the guide on the slider assembly, and the guide on the lower mold cavity.

[0021] 6. During the insertion of the sealing strip, under the curvature limit of the sliding block and the sliding groove, the forward distance of the sealing strip continuously changes the insertion angle, so as to meet the curvature requirements of the mold cavity caused by the curvature of the molded product itself and solve the problem of difficult insertion of the curved strip.

[0022] 7. The automatic strip feeding device has been optimized in structure. The pressing block mechanism on the strip clamp and the upper and lower support block keep the sealing strip to be inserted into the main mold cavity in a folded state. Then, the automatic pushing device pushes the strip clamp to guide the sealing strip into the mold cavity under the guidance of the staggered guide structure of the mold cavity insert plate. This meets the strip insertion requirements of the integrated mold corner, reduces the number of manual strip insertions, and improves the degree of automation and production efficiency.

[0023] 8. The second demolding drive mechanism drives the first slider assembly and the second slider assembly to move away from the sealing strip, cooperating with the second demolding drive mechanism to better demold the sealing strip.

[0024] 9. The automated cutting and injection molding corner assembly line for sealing strips described in this invention centrally optimizes the layout of a complete set of punching equipment and injection molding presses required for sealing strip production within the same space. This reduces product transfer and transportation time. Combined with the transport lines for soft strips and soft strip clamps, and the transport lines for top strips and mounting strip sheet metal, as well as the handling by robots, production can be used immediately, reducing material backlog in upstream processes. By setting up mounting strip sheet metal or sealing strip insert clamp assemblies to flow to the handling robots on the corresponding transport lines, the handling robots transport the mounting strip sheet metal or sealing strip insert clamp assemblies to the corresponding injection molding corner molds. The automatic feeding device on the corresponding injection molding corner mold pushes the product into the mold for automatic injection molding corner assembly and subsequent product handling. This fully automates the downstream processes, thereby improving production efficiency and product quality, reducing the number of operators required for downstream processes, and lowering enterprise production costs.

[0025] 10. The automatic strip feeding device and the first automatic strip feeding device separate the strip feeding sheet metal from the mold and share the strip feeding sheet metal with the cutting process. This allows the strip to be fed only once in the initial cutting process, facilitating its transfer between the cutting and corner injection molding processes and avoiding repeated strip feeding between the two processes. Furthermore, since the sealing strip is installed on the strip feeding sheet metal in a single operation, the step of manually feeding the strip again when connecting it to the mold at the other end can be eliminated. The handling robot simply connects the other end of the strip feeding sheet metal fixture to another mold, thus removing the need for manual strip feeding in the injection molding process.

[0026] 11. The first injection molding corner mold controls the upper and middle insert plate assemblies to flip during demolding movement via the first demolding drive mechanism. This changes the original state where the sealing strip lip was tightly attached to the upper and middle insert plate assemblies. The flipped upper and middle insert plate assemblies push the sealing strip lip open at a certain angle, creating a gap between them and the sealing strip lip. This allows the sealing strip product more space to deform and avoid deformation resistance during demolding movement, and prevents cracking at the corner caused by the hard pulling of the upper and middle insert plate assemblies on the root of the sealing strip lip. This reduces the scrap rate and improves production efficiency. Attached Figure Description

[0027] Figure 1 is a structural schematic diagram of the integrated production line for injection molding corner joints of the sealing strip according to the present invention; Figure 2 is a structural schematic diagram of the injection molding press according to the present invention; Figure 3 is a structural schematic diagram of the injection molding corner mold installed on the injection molding press according to the present invention; Figure 4 is a structural schematic diagram of the injection molding corner mold according to the present invention; Figure 5 is a structural schematic diagram of the initial position of the automatic top strip feeding device and the automatic soft strip feeding device of the injection molding corner mold according to the present invention; Figure 6 is a structural schematic diagram of the insertion clamp placed into the injection molding corner mold according to the present invention; Figure 7 is a partial cross-sectional schematic diagram of the automatic soft strip feeding device and the insertion clamp according to the present invention; Figure 8 is a structural schematic diagram of the injection molding corner mold in the open state for demolding according to the present invention; Figure 9 is a structural schematic diagram of the injection molding corner mold in the open state for demolding according to the present invention from another perspective; Figure 10 is a schematic diagram of the installation of the insertion clamp and the automatic soft strip feeding device according to the present invention; Figure 11 is a top view of the automatic top strip feeding device without the first sealing strip installed according to the present invention; Figure 12 is a front view of the automatic top strip feeding device according to the present invention; Figure 13 is a partial schematic diagram of the sheet metal mounting strip with the first sealing strip installed on the plastic corner mold in this invention; Figure 14 is a structural schematic diagram of the demolding mechanism in the lower mold mechanism of this invention; Figure 15 is a structural schematic diagram of the lower mold mechanism without the insert clamp in this invention; Figure 16 is a structural schematic diagram of the transport line in this invention; Figure 17 is a partial structural diagram of the circulating conveying mechanism in this invention; Figure 18 is a schematic diagram of the sheet metal mounting strip hanging on the transport trolley in this invention; Figure 19 is a structural schematic diagram of the insert clamp on the reciprocating transport platform in this invention; Figure 20 is a finished sealing strip after injection molding corner in this invention; Figure 21 is a top view of the automated cutting and injection molding corner integrated production line of the sealing strip in this invention; Figure 22 is a structural schematic diagram of the first injection molding press in this invention; Figure 23 is a structural schematic diagram of the first injection molding corner mold installed on the first injection molding press in this invention; Figure 24 is a structural schematic diagram of the lifting mechanism lifting the lower mold movable plate in this invention; Figure 25 is a schematic diagram of the upper insert plate assembly and the middle insert plate assembly in the flipping state in this invention; Figure 26 is a front view of the state when the inclined top block and the roller assembly just come into contact in the present invention; Figure 27 is a cross-sectional view of the first insert plate assembly in the present invention; Figure 28 is a top view of the second demolding drive mechanism in the present invention; Figure 29 is a partial structural schematic diagram of the first automatic soft strip feeding device in the present invention; Figure 30 is a schematic diagram of the cooperation between the first automatic soft strip feeding device and the sealing strip insert clamp assembly in the present invention; Figure 31 is a structural schematic diagram of the sealing strip insert clamp assembly in the present invention on the soft strip and soft strip clamping table; Figure 32 is a schematic diagram of the finished sealing strip after final processing in an integrated production line for automated cutting and injection molding of sealing strips in the present invention. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: As shown in Figures 1 to 19, an integrated production line for injection molding corner joints of sealing strips includes: at least one transport line 4, a handling robot 5, a strip mounting sheet metal 6 for installing top strips, a strip clamping fixture 841 for installing flexible strips, and an injection molding press 8. The transport line 4 is located on one side of the injection molding press 8, and the handling robot 5 cooperates with the transport line 4 and the injection molding press 8. The injection molding press 8 is equipped with an injection molding corner joint mold, which includes a lower mold mechanism 81 and an upper mold mechanism 82. The upper mold mechanism 82 is located above the lower mold mechanism 81, and the two cooperate with each other. The lower mold mechanism 81 is equipped with a first mold cavity and a second mold cavity. It also includes an automatic top bar feeding device 83 and an automatic soft bar feeding device 84, which are respectively located at the top bar and soft bar feeding points of the lower mold mechanism 81. During operation, the sheet metal 6 containing the top bar is placed on the transport line 4, which transports the top bar and sheet metal 6 to the loading position of the injection press 8. The handling robot 5 transfers the top bar and sheet metal 6 to the automatic top bar feeding device 83, which pushes the sheet metal 6 containing the top bar forward until one end of the top bar enters the second mold cavity. At the designated location, the insert clamp 841 containing the flexible strip is placed on the transport line 4. The transport line 4 transports the insert clamp 841 containing the flexible strip to the loading position of the injection molding press 8. The handling robot 5 transfers the insert clamp containing the flexible strip to the automatic flexible strip feeding device 84. The automatic flexible strip feeding device 84 pushes the insert clamp 841 containing the flexible strip forward until one end of the flexible strip reaches the designated position in the first mold cavity. The top strip and the flexible strip are injection molded and joined together by the injection molding corner mold. The product with the injection molded corner is transported to the designated position through the finished product conveying and inspection packaging line 9.

[0030] It should be noted that the transport line can be selected as either the circular transport line 4 or the reciprocating transport platform 102 according to the actual processing needs. The reciprocating transport platform 102 works in conjunction with the handling robot 5.

[0031] As shown in Figures 3 and 4, the lower mold mechanism 81 includes a first lower mold assembly 8101 and a second lower mold movable plate 8102. The second lower mold movable plate 8102 is located above the first lower mold assembly 8101, and the two are connected in a lifting manner. A lifting drive mechanism 8103 for lifting the second lower mold movable plate 8102 is provided on the outside of the first lower mold assembly 8101. The second lower mold movable plate 8102 is provided with a lower mold extension section 8111. The lower mold extension section 8111 is provided with a first sliding groove 8112. A sliding block 8113 is provided in the first sliding groove 8112. The shape of the first sliding groove 8112 can be adjusted as needed. As shown in Figures 11 to 13, the automatic top bar feeding device 83 includes a bar insertion power mechanism 831 and a bar insertion sheet metal clamp 832. The bar insertion power mechanism 831 includes a first bar insertion drive mechanism 8311, a drive connector 8312, and a power connecting block 8313. The bar insertion sheet metal clamp 832 is disposed on the lower mold extension section 8111, and the bar insertion power mechanism 831 is disposed below the lower mold extension section 8111. The bar loading sheet metal 6 is disposed above the bar insertion sheet metal clamp 832. The first bar insertion drive mechanism 8311 is connected to the lower mold extension section 8111 through a mounting base. The output end of the first bar insertion drive mechanism 8311 is connected to the power connecting block 8313 through the drive connector 8312. The power connecting block 8313 is disposed below the sliding block 8113 and is simultaneously connected to the bar loading sheet metal 6 through a power rotating column 8314.

[0032] As shown in Figures 5, 6, 8, and 9, the injection molding corner mold also includes a demolding mechanism 85, which is mounted on the lower mold mechanism 81 and cooperates with the automatic ejector bar feeding device 83 and the automatic soft strip feeding device 84. The lower mold mechanism 81 is also provided with an installation platform 811, which is inclined. The installation platform 811 is provided with a set of guide grooves 812, and a set of first limiting blocks 813 is provided on the outside of the guide grooves 812. A set of second limiting blocks 814 is provided on the end of the installation platform 811 away from the insert power drive mechanism 842, and an inclined ejector block 815 is provided on one side of the lower mold mechanism 81. A support block 816 is provided on one side of the lower mold mechanism 81 located in the first mold cavity. An insert plate mechanism 817 and a slider assembly 818 are respectively provided on both sides of the lower mold mechanism 81 located in the second mold cavity. A second slider 819 is provided on the side of the second mold cavity opposite to the slider assembly 818.

[0033] As shown in Figures 5 to 10, the automatic soft strip feeding device 84 includes a strip insertion power drive mechanism 842, which is mounted on the lower mold mechanism 81 and installed at the lower end of the mounting platform 811. The output end of the strip insertion power drive mechanism 842 is connected to the strip insertion clamp 841. The strip insertion power drive mechanism 842 includes a sliding guide mounting plate 8421, which has a sliding groove. A power slider 8422 is provided in the sliding groove, and a set of limiting blocks 8423 are provided on both sides of the power slider 8422. A strip insertion drive mechanism 8424 is connected to the lower mold mechanism 81 through a mounting base. Its output end is connected to the power slider 8422 through a flange connecting block 84241. The strip insertion clamp 841 is mounted on the mounting platform 811 and connected to the power slider 8422.

[0034] As shown in Figure 5, the insert clamp 841 includes a clamp base plate 8411, a set of guide blocks 8412, an insert plate assembly 8413, a slider 8414, and a pressing mechanism 8415. The clamp base plate 8411 has a lower mold cavity, and a slide rail assembly 8416 is located on one side of the lower mold cavity. The pressing mechanism 8415 is connected to the slide plate inside the slide rail assembly 8416. The guide blocks 8412 are located below the clamp base plate 8411 and are slidably connected to the guide groove 812. The insert plate assembly 8413 and the slider 8414 are arranged opposite to each other on both sides of the lower mold cavity, and the slider 8414 is slidably connected to the slide rail assembly 8416. The pressing mechanism 8415 is located on one side of the slider 8414. As shown in Figures 7 and 9, the insert plate assembly 8413 includes an upper insert plate assembly 84131 and a lower insert plate assembly 84132. The upper insert plate assembly 84131 is located above the lower insert plate assembly 84132, and the upper insert plate assembly 84131 is hinged to the lower mold mechanism 81 via a transition frame. The lower insert plate assembly 84132 is slidably connected to the second lower mold movable plate 8102. The pressing block mechanism 8415 includes a flipping base 84151 and a flipping connecting block 841. 52. Pressure block 84153, the flip base 84151 is installed on the lower mold mechanism 81, and one side of the flip base 84151 is connected to the slide rail assembly 8416 through the connecting block 841511. The flip connecting block 84152 is provided on the flip base 84151, one end of which is provided with a roller 841521, and the other end is connected to the pressure block 84153. The roller 841521 is located above the inclined top block 815 and moves along the inclined top block 815.

[0035] It also includes a transport bracket 843 and a robot transport chuck 844, one side of the fixture base plate 8411 being connected to the robot transport chuck 844 via the transport bracket 843.

[0036] As shown in Figure 8, the insert plate mechanism 817 is mounted on the lower mold mechanism 81 and is movably connected to the lower mold mechanism 81. The insert plate mechanism 817 includes a lower insert plate module 8171, a middle insert plate module 8172, and an upper insert plate module 8173. The lower insert plate module 8171, the middle insert plate module 8172, and the upper insert plate module 8173 are arranged from bottom to top, and their sides are movably connected to the slide rail 104 on the lower mold mechanism 81 via sliding brackets 8174. The shapes of the ends of the lower insert plate module 8171, the middle insert plate module 8172, and the upper insert plate module 8173 match the shape of the sealing strip. The upper insert plate module 8173 includes a first upper insert plate 81731, a second upper insert plate 81732, and a third upper insert plate 81733. All three upper insert plates are U-shaped. The second upper insert plate 81732 is located inside the first upper insert plate 81731, and the third upper insert plate 81733 is located inside the second upper insert plate 81732. The end faces of the lower insert plate module 8171, the middle insert plate module 8172, and the upper insert plate module 8173 adopt a staggered guide structure, which can be adjusted to match the shape of the sealing strip. This creates a gap according to the shape of the sealing strip during insertion, facilitating better insertion.

[0037] As shown in Figures 14 and 15, the demolding mechanism 85 includes a first demolding mechanism, a second demolding mechanism, and a third demolding mechanism. The first demolding mechanism includes a first demolding power mechanism 851. The output end of the first demolding power mechanism 851 is provided with a first demolding connecting rod 852. The first demolding connecting rod 852 is connected to the insert plate assembly 8413, the slider 8414, and the pressing block mechanism 8415, and is used to drive the insert plate assembly 8413 and the pressing block mechanism 8415 to flip up and the slider 8414 to move. The output end of the first demolding power mechanism 851 is connected to the insert plate assembly 8413, the slider 8414, and the pressing block mechanism 8415, and is used to drive the insert plate assembly 8413 and the pressing block mechanism 8415 to flip up and the slider 8414 to move. The second demolding mechanism includes a second demolding power mechanism 853. The output end of the second demolding power mechanism 853 is provided with a second demolding connecting rod 854. The second demolding connecting rod 854 is connected to the insert plate mechanism 817 and the lower insert plate assembly 84132 for moving the insert plate mechanism 817 and the lower insert plate assembly 84132. The third demolding mechanism includes a third demolding power mechanism 855. The output end of the third demolding power mechanism 855 is provided with a third demolding connecting rod 856 for driving the slider and the second slider 819 in the slider assembly 818 to move. The first demolding connecting rod 852 is provided with a first transition block 8521 at one end near the first demolding power mechanism 851. The first transition block 8521 is provided with an opening slot. The slide plate in the slide rail assembly 8416 is provided with a connecting rod 84161, and the connecting rod 84161 is located in the opening slot. The end of the second demolding link 854 is located at the second adapter block 8541. The second adapter block 8541 is provided with a drive module 85411 for driving the insert plate mechanism 817. The drive part of the drive module 85411 is located in the corresponding grooves of the lower insert plate module 8171 and the middle insert plate module 8172 of the insert plate mechanism 817. The end of the second demolding link 854 is provided with a through hole, and a third adapter block 85412 is provided in the through hole. The other end of the third adapter block 85412 is connected to a power rod hook 85413 for driving the insert plate assembly 8413 to move. The lower part of the insert plate assembly 8413 is connected to the power rod hook 85413 through a connecting rod 84313. The middle insert plate module 8172 is provided with a set of fixed seats, and the fixed seats are provided with a set of positioning bolts 81721. During demolding, the second demolding linkage 854 drives the second adapter block 8541 to drive the driving part of the driving module 85411 to move forward. Since the second adapter block 8541 and the third adapter block 85412 are both connected to the second demolding linkage 854, when the second demolding linkage 854 drives the second adapter block 8541 to drive the driving part of the driving module 85411 to move, it will drive the lower insert plate in the insert plate mechanism 817 and the lower insert plate assembly 84132 to move away from the mold cavity along the power direction.The third demolding link 856 includes a main third demolding link and a branch third demolding link. The branch third demolding link is located on one side of the main third demolding link, and a connecting rod 8561 is provided between them. Both ends of the connecting rod 8561 have waist holes. The main third demolding link and the branch third demolding link are connected to the corresponding waist holes via connecting shafts. The sliding plate in the slider assembly 818 is connected to the corresponding connecting shaft, which is located in the waist hole at one end of the connecting rod 8561. The second slider 819 is located at the end of the main third demolding link. During operation, the third demolding power mechanism 855 drives the third demolding link 856 to extend. During the extension of the third demolding link 856, the second slider 819 is driven to move away from the mold cavity along the power direction. Simultaneously, the connecting shaft on the main third demolding link and the branch third demolding link moves in the waist holes. During this process, the sliding plate in the slider assembly 818 drives the slider assembly 818 to retract, thus opening the mold cavity. ;

[0038] It also includes an auxiliary demolding mechanism 86, as shown in Figures 11 and 12. The auxiliary demolding mechanism 86 includes a third slider 861, a drive frame 862, and an auxiliary demolding drive mechanism 863. A mounting plate 8114 is provided at one end of the lower mold extension section 8111 on the second lower mold movable plate 8102. The mounting plate 8114 has a second sliding groove 81141. The third slider 861 is located above the mounting plate 8114 and on one side of the slider assembly 818. The auxiliary demolding drive mechanism 863 includes a first sliding plate 8631 and an auxiliary drive frame 8632. The first sliding plate 8631 is disposed in the sliding groove of the second lower mold movable plate 8102, and a set of slide rails are provided on both sides of the sliding groove. The output end of the demolding drive cylinder 8633 is connected to the first sliding plate 8631. One end of the auxiliary drive frame 8632 is connected to the first sliding plate 8631, and the other end is provided with a through hole, which extends to the top of the second sliding groove 81141. The drive frame 862 is inserted into the through hole of the auxiliary drive frame 8632 and extends into the second sliding groove 81141. The drive frame 862 is connected to the third slider 861.

[0039] As shown in Figures 11 and 12, the insert sheet metal fixture 832 includes a first fixture base plate 8321. At least one set of first positioning elements 83211 and second positioning elements 83212 are provided on one side of the first fixture base plate 8321. The first positioning element 83211 has a positioning groove, and the second positioning element 83212 has a central cross positioning groove. It also includes a sheet metal fixing assembly 8322, which includes a sheet metal pressing block 83221 and a pressing block driving cylinder 83222. The pressing block driving cylinder 83222 is located on the first fixture base plate 8321, and its output end is connected to the sheet metal pressing block 83221.

[0040] It also includes a sealing strip positioning assembly 8323, which comprises a positioning drive cylinder 83231 and an elbow clamp positioning assembly 83232. The positioning drive cylinder 83231 is mounted on the first fixture base plate 8321, and the elbow clamp positioning assembly 83232 is connected to the output end of the positioning drive cylinder 83231. The sheet metal fixing assembly 8322 and the sealing strip positioning assembly 8323 can effectively position the sheet metal strip and the sealing strip respectively, improving the stability of subsequent processing.

[0041] As shown in Figures 16 to 18, the circular transport line 4 includes a set of transport trolleys 41 and a circular conveying mechanism 42. The transport trolleys 41 are spaced apart on the circular conveying mechanism 42, and the circular conveying mechanism 42 is vertically mounted on the transport frame 44 via a connector 43. The transport trolleys 41 are provided with a suspension base 411, the suspension base 411 is provided with a longitudinal positioning groove 4111, and transverse positioning grooves 4112 are provided on both sides of the longitudinal positioning groove 4111 in the horizontal direction. The transport carrier 42 is mounted on the suspension base 411.

[0042] The transport trolley 41 further includes a timing belt connector 4101, a set of connecting wall plates 4102, a set of planar guide rollers 4103, and a set of inclined rollers 4104. The connecting wall plates 4102 are provided with through holes. The timing belt connector 4101 is disposed between the connecting wall plates 4102, and both ends of the timing belt connector 4101 are provided with extensions. The extensions are disposed in the through holes of the connecting wall plates 4102, and the extensions are provided with inclined surfaces. The planar guide rollers 4103 are disposed on the connecting wall plates 4102, and the inclined rollers 4104 are disposed above the planar guide rollers 4103 and installed on the inclined surfaces of the extensions of the timing belt connector 4101. The timing belt connector 4101 is connected to the circulating conveying mechanism 42.

[0043] The circulating conveying mechanism 42 includes a conveying support frame 421. An annular track frame 422 is provided opposite to the outer side of the conveying support frame 421. A synchronous belt drive pulley 423 and a synchronous belt driven pulley 424 are respectively provided at both ends of the conveying support frame 421 between the annular track frames 422. The synchronous belt drive pulley 423 and the synchronous belt driven pulley 424 are connected to the bearings on the annular track frame 422 through a drive shaft. The synchronous belt drive pulley 423 and the synchronous belt driven pulley 424 are connected by a synchronous belt 425. A conveying drive assembly 426 is provided at one end of the synchronous belt drive pulley 423 on the outer side of the annular track frame 422. The output end of the conveying drive assembly 426 is connected to one end of the drive shaft of the synchronous belt drive pulley 423.

[0044] The inner side of the annular track frame 422 is provided with annular inclined guide rails 4221 on the upper and lower sides respectively. The planar guide roller 4103 is engaged with the horizontal surface of the annular inclined guide rail 4221, and the inclined roller 4104 is engaged with the inclined surface of the annular inclined guide rail 4221.

[0045] The outer side of the annular track frame 422 is provided with a strip-removing auxiliary fixing module 45.

[0046] The suspension base 411 is provided with a set of ear plates on the side near the transport trolley 41. The ear plates are located on the inner side of the connecting wall panel 4102 and are locked with screws.

[0047] The longitudinal positioning groove 4111 has an upper groove and a lower groove on both sides in the horizontal direction, and the lower transverse positioning groove 4112 is located below the upper groove.

[0048] As shown in Figure 18, the mounting strip sheet metal 6 includes a mounting strip sheet metal body 61. A sheet metal longitudinal bar 62 is provided on one side of the mounting strip sheet metal body 61, and a set of positioning cross bars 63 are provided on both sides of the sheet metal longitudinal bar 62. The sheet metal longitudinal bar 62 is engaged in the longitudinal positioning groove 4111, and the positioning cross bars 63 are engaged in the transverse positioning groove 4112. The mounting strip sheet metal body 61 is provided with at least one set of gripping holes 611. An anti-detachment protrusion 41121 is provided on the outer side of the transverse positioning groove 4112, and an inclined surface is provided on the inner side of the anti-detachment protrusion 41121.

[0049] As shown in Figures 20 and 31, the finished sealing strip 87 is composed of sealing strip 1 871, sealing strip 2 872, first sealing strip 873, and second sealing strip 874. The sealing strip 1 871 and sealing strip 2 872 constitute the third sealing strip. The working method of the integrated injection molding production line for the sealing strip in this embodiment is as follows: 1) The injection molding press drives the upper mold mechanism 82 to rise and lift. The slider and second slider 819 in the insert plate mechanism 817 and slider assembly 818 are in the insert standby position, and the insert power drive mechanism 842 and insert power mechanism 831 are in the insert clamping standby position; 2) A worker suspends the sheet metal 6 containing the first sealing strip 873 onto the transport line 4; another worker clamps the third sealing strip onto the insert clamp 841 on the reciprocating transport platform 102 after processing. At this time, the manual operation is completed. 3) The transport line 4 transports the first sealing strip 873 and the mounting strip sheet metal 6 to the gripping position of the handling robot 5. The soft strip and insert clamping reciprocating transport platform 102 transports the third sealing strip and insert clamping fixture 841 to the gripping position of the handling robot 5. 4) The lifting drive mechanism 8103 on the first lower module 8101 extends to lift the entire second lower mold movable plate 8102. The handling robot 5 takes the third sealing strip and insert clamping fixture 841 from the soft strip and insert clamping reciprocating transport platform 102 and transports it to the corresponding slide groove on the second lower mold movable plate 8102, and connects it with the insert power drive mechanism 842. The oil cylinder on the insert power drive mechanism 842 extends to push the insert clamping fixture 841 forward until the outer end of the second sealing strip 872 is inserted into the second mold cavity formed by the first lower module 8101, the insert plate mechanism 817, and the second slider 819. 5): The lifting drive mechanism 8103 on the first lower module 8101 retracts, lowering the entire second lower mold movable plate 8102. Then, the transport robot 5 moves to transport the first sealing strip 873 and the unjoined end of the first sealing strip 873 on the strip mounting sheet metal 6 to the injection molding corner mold on the injection press 8, and installs it onto the insert sheet metal fixture 832. The sheet metal fixing component 8322 and the sealing strip positioning component 8323 respectively position the strip mounting sheet metal 6 and the first sealing strip 873. The electric cylinder on the insert power mechanism 831 extends to push the insert sheet metal fixture 832 forward until one end of the first sealing strip 873 is inserted into the mold cavity formed by the slider in the first lower module 8101, the insert plate mechanism 817 and the slider assembly 818. At this time, the injection molding corner mold completes the insert step and waits for injection molding. 6): The injection molding press drives the upper mold mechanism 82 to descend for injection molding. After the injection molding is completed, the injection molding press 8 drives the upper mold mechanism 82 to rise and lift. At this time, the corner of the sealing strip product is completed.7): After the upper mold mechanism 82 is lifted, demolding is performed. That is, the lifting drive mechanism 8103 on the first lower mold assembly 8101 extends again to lift the entire second lower mold movable plate 8102. Then, the cylinder on the first demolding power mechanism 851 in the first demolding mechanism drives the first demolding connecting rod 852 to retract. During the retraction of the first demolding connecting rod 852, it also drives the upper plate in the upper plate assembly 84131 on the insert clamp 841, the pressure block 84153 in the pressure block mechanism 8415 to flip up, and the slider 8414 to move backward. The cylinder on the second demolding power mechanism 853 in the second demolding mechanism drives the second demolding connecting rod 854 to extend. During the extension of the second demolding connecting rod 854, it also drives the insert plate mechanism 817 and the lower plate in the lower plate assembly 84132 on the insert clamp 841 to move away from the mold cavity along the power direction. The hydraulic cylinder of the third demolding power mechanism 855 in the third demolding mechanism drives the third demolding connecting rod 856 to extend. During the extension of the third demolding connecting rod 856, the second slider 819 moves away from the mold cavity along the power direction. During this process, the slider in the slider assembly 818 retracts in the opposite direction of the power. At this time, the demolding drive cylinder 8633 in the auxiliary demolding mechanism 86 drives 8631 to retract. During the retraction of 8631, 8632 and 862 retract. During this process, 862 drives 861 to move away from the mold cavity along the power direction. At this time, the mold cavity is in the open state. Finally, the sealing strip positioning assembly 8323 is opened, and the corner-jointed sealing strip product can be removed from the mold.

[0050] It should be noted that the sealing strips produced during the integrated injection molding production line process are the sealing strip products shown in Figure 19.

[0051] Example 2: As shown in Figures 1 to 31, an automated cutting and injection molding corner assembly line for sealing strips is provided. This includes the integrated injection molding corner assembly line for sealing strips described in Example 1, and further includes a soft strip punching device 1, a soft strip punching device 2, a top strip punching device 3, a first transport line 401 for conveying the fourth soft strip, and a first injection molding press 7. The soft strip punching device 1, soft strip punching device 2, top strip punching device 3, first transport line 401, and first injection molding press 7 are respectively located at corresponding processing stations. The soft strip punching device 1 is located on one side of the first transport line 401, and a soft strip and soft strip clamping table 101 is provided between them. The handling robot 5 cooperates with the first transport line 401, the first injection molding press 7, the injection molding press 8, and the finished product conveying and inspection packaging line 9. It should be noted that the structure of the first transport line 401 is the same as that of the transport line 4 in Example 1.

[0052] It also includes a sealing strip insert clamp assembly for installing a fourth sealing strip, as shown in Figure 29. The sealing strip insert clamp assembly includes a contoured upper guide 1031, a contoured lower guide 1032, a clamp contoured upper cover plate 1033, and a clamp contoured base 1034. The contoured upper guide 1031 and the contoured lower guide 1032 are connected to the clamp contoured upper cover plate 1033 and the clamp contoured base 1034 via guide rods 1035. The clamp contoured upper cover plate 1033 and the clamp contoured base 1034 are connected by a pivot 1036. The contoured upper guide 1031 and the contoured lower guide 1032 are connected to the clamp. A contouring cavity is provided between the contouring top cover plate 1033 and the contouring base 1034 of the fixture; a limiting post is provided at the end of the guide rod 1035; a limiting clamp 10341 is provided on the contouring base 1034 of the fixture; a flip rod 10331 and a locking rod 10332 are provided on the contouring top cover plate 1033 of the fixture; the locking rod 10332 can cooperate with the limiting clamp 10341 to lock the contouring top cover plate 1033 of the fixture and the contouring base 1034 of the fixture; the bottom surface of the contouring base 1034 of the fixture is trapezoidal and has guide parts on both sides; the bottom surface of the contouring base 1034 of the fixture is also provided with an insertion port.

[0053] The side of the clamping base 1034 has a transport port 10342, on which a first transport bracket is installed and connected to the first robot transport chuck.

[0054] As shown in Figures 22 to 26, the first injection molding press 7 is provided with a first injection molding corner mold. The first injection molding corner mold includes a first lower mold mechanism 71 and a first upper mold mechanism 72. The first lower mold mechanism 71 is located on the worktable of the first injection molding press 7, and the first upper mold mechanism 72 is located above the first lower mold mechanism 71, and the two cooperate with each other. The first lower mold mechanism 71 includes a second lower mold assembly 711, a first insert plate assembly 712, a first slider assembly 713, a second slider assembly 714, a first demolding drive mechanism 715, a second demolding drive mechanism 716, a first automatic top strip feeding device 717, and a first automatic soft strip feeding device 718. The second lower mold assembly 711 is provided with a first mold cavity and a second mold cavity, one end of the second mold cavity communicating with the first mold cavity. The second lower mold assembly 711 includes a first lower mold base plate 7111, a first lower mold 7112, a lower mold movable plate 7113, and a set of lifting mechanisms 7114. The first lower mold 7112 is located above the first lower mold base plate 7111, the lower mold movable plate 7113 is located above the first lower mold 7112 and is connected by a set of guide pillars, and the lifting mechanism 7114 is located outside the first lower mold 7112, with its output end connected to the lower mold movable plate 7113. As shown in Figures 24, 25, and 27, the first insert plate assembly 712 is disposed on the first lower mold mechanism 71 and between the first mold cavity and the second mold cavity; the first slider assembly 713 is disposed on the outside of the first mold cavity; the second slider assembly 714 is disposed on the outside of the second mold cavity; the first demolding drive mechanism 715 is disposed on the outside of the second lower mold assembly 711, and its output end fourth demolding link 7151 is connected to the first insert plate assembly 712 through a transition assembly 71501; the second demolding drive mechanism 716 is connected to the lower mold movable plate 7113, and its output end fifth demolding link 7161 is connected to the first slider assembly 713 through a transition drive frame 73, and the second slider assembly 714 is connected to the fifth demolding link 7161; the first automatic top strip feeding device 717 and the first automatic soft strip feeding device 718 are disposed on the lower mold movable plate 7113 and on both sides of the first insert plate assembly 712.

[0055] It should be noted that the first automatic top bar feeding device 717 has the same structure as the automatic top bar feeding device 83.

[0056] As shown in Figures 24 and 25, the first insert plate assembly 712 includes a first lower insert plate assembly 7121, a first middle insert plate assembly 7122, an upper insert plate unit 7123, and an insert plate sliding limiting assembly 7124. The first lower insert plate assembly 7121, the first middle insert plate assembly 7122, and the upper insert plate unit 7123 are arranged from bottom to top, and the first lower insert plate assembly 7121, the first middle insert plate assembly 7122, and the upper insert plate unit 7123 have a flanged portion on the side near the third mold cavity and the fourth mold cavity. As shown in Figure 27, the insert plate sliding limiting assembly 7124 is disposed on the lower mold movable plate 7113, and the first lower insert plate assembly 7121... The lower part is embedded with a fourth slider 71201, which is movably connected to the sliding groove of the insert plate sliding limit assembly 7124. The outer side of the upper insert plate unit 7123 is provided with a first power connecting block 7125, and a guide inclined top block 7126 is provided below the first power connecting block 7125. The guide inclined top block 7126 is connected to the first lower insert plate assembly 7121. The outer side of the first power connecting block 7125 is provided with a roller assembly 71251, which cooperates with the guide inclined top block 7126. The outer side of the first power connecting block 7125 is also provided with a limiting sliding frame 71252. The lower part of the limiting sliding frame 71252 is L-shaped, and the lower part of the limiting sliding frame 71252 is located in the groove outside the guide inclined top block 7126. An L-shaped support block 7127 is provided at the lower part of the guide inclined block 7126. A third limiting block 7128 is provided below the L-shaped support block 7127. A sliding limiting block 7129 is provided on the outside of the third limiting block 7128. The upper extension of the sliding limiting block 7129 is provided on the extension of the L-shaped support block 7127. The L-shaped support block 7127, the third limiting block 7128 and the sliding limiting block 7129 cooperate with each other.

[0057] The end of the first middle insert plate assembly 7122 is connected by a connecting block 71221. The outer side of the connecting block 71221 away from the first middle insert plate assembly 7122 is provided with a groove. A push rod 71222 is provided in the groove. The lower part of the push rod 71222 is provided in the first groove on the insert plate sliding limit assembly 7124. The inner wall of the first groove is provided with an inclined top surface 71241. A set of power transmission keys 71223 is provided on the first middle insert plate assembly 7122. The power transmission keys 71223 cooperate with the groove on the inner side of the first power connecting block 7125.

[0058] The upper insert plate unit 7123 includes a first upper insert plate assembly 71231, a second upper insert plate assembly 71232, and a third upper insert plate assembly 71233. The first upper insert plate assembly 71231, the second upper insert plate assembly 71232, and the third upper insert plate assembly 71233 are arranged sequentially from front to back, and each has an upward groove below it. The upward groove cooperates with the protrusion on the first middle insert plate assembly 7122.

[0059] The adapter drive frame 73 has a first through hole 731 at one end of the second demolding drive mechanism 716 and a second through hole 732 at one end of the first slider assembly 713. The fourth demolding connecting rod 7151 is connected to the first through hole 731 through a connecting shaft. The adapter drive frame 73 has a second rotation point 733, which is rotatably connected to the lower mold movable plate 7113 through a connecting shaft.

[0060] It also includes a sliding limiting assembly 74, which includes a sliding limiting plate 741 for limiting the stroke of the first slider assembly 713 and a sliding limiting rotating plate 742 for limiting the stroke of the second slider assembly 714. One side of the sliding limiting plate 741 is connected to the lower mold movable plate 7113, and the sliding limiting rotating plate 742 is rotatably connected to the lower mold movable plate 7113 via a connecting shaft. The sliding limiting plate 741 has a first limiting groove 7411 for limiting the movement stroke of the first slider assembly 713, and the upper part of the connecting shaft on the fourth demolding link 7151 connected to the first through hole 731 passes through the first limiting groove 7411. The sliding limiting rotating plate 742 has a second limiting groove 7421 for limiting the movement stroke of the second slider assembly 714, and the second slider assembly 714 is connected to the fifth demolding link 7161 via a connecting shaft passing through the second limiting groove 7421.

[0061] The lower mold movable plate 7113 is also provided with a set of limiting plates 71131, which are disposed opposite to the sliding plate in the first slider assembly 713.

[0062] In this embodiment, the demolding process of the first injection molding corner mold is as follows: During demolding, the lifting drive cylinder in the lifting mechanism 7114 drives the lifting block to lift the lower mold movable plate 7113. At this time, the lower mold cavity on the first lower mold 7112 is separated from the sealing strip. The drive cylinder in the second demolding drive mechanism 716 drives the fifth demolding link 7161 to move forward. During the forward movement of the fifth demolding link 7161, it will drive the transfer drive frame 73 to rotate around the connecting shaft in the second rotation point 733. During this process, the transfer drive frame 73 drives the first slider assembly 713 to retreat along the sliding groove of the two limit plates 71131 away from the sealing strip. At the same time, the fifth demolding link 7161 drives the second slider assembly 714 to retreat in the direction away from the sealing strip at the sliding limit rotating plate 742 to the limit position of the second limit sliding groove 7421. Then the second slider assembly 714 drives the sliding limit rotating plate 742 to rotate around the rotation point away from the sealing strip. The drive cylinder on the first demolding drive mechanism 715 drives the fourth demolding link 7151 to move forward. During the movement, the fourth demolding link 7151 will drive the adapter assembly 71501 to move backward away from the sealing strip. During the backward movement, it first contacts the first lower insert plate assembly 7121 and carries the fourth slider 71201 in the first lower insert plate assembly 7121 to move backward together in the insert plate sliding limit assembly 7124 and the sliding limit block 7129. During the backward movement, the first lower insert plate assembly 7121 drives the guide inclined top block 7126 to contact the roller assembly 71251 on the outside of the upper insert plate unit 7123. The inclined top surface on the guide inclined top block 7126 applies an upward force to the roller assembly 71251. The first power connection block 7125 pre-flips the first middle insert plate assembly 7122 and the upper insert plate unit 7123. The adapter component 71501 drives the first lower insert plate assembly 7121 to retreat a certain distance and then contact the first middle insert plate assembly 7122. It then moves the first lower insert plate assembly 7121 and the first middle insert plate assembly 7122 together backward until the push rod 71222 in the first middle insert plate assembly 7122 contacts the inclined top surface 71241 on the insert plate sliding limit assembly 7124. Subsequently, under the reaction force of the inclined top surface 71241, during the retreat of the first middle insert plate assembly 7122, the push rod 71222 connects the first middle insert plate assembly 7122 with the upper insert plate unit 71. 23 gradually flips up, and at the same time, the roller assembly 71251 also moves upward along the guide inclined top block 7126 to further apply upward force until the push rod 71222 completely passes through the inclined top surface 71241 and then flips up to complete the process; when the second transition block drives the first lower insert plate assembly 7121 and the first middle insert plate assembly 7122 to retreat, the power transmission key 71223 on the first middle insert plate assembly 7122 retreats until it hits the first power connection block 7125, and the first middle insert plate assembly 7122 drives the upper insert plate unit 7123 to retreat together until it reaches the demolding position.

[0063] As shown in Figure 29, the first automatic soft strip feeding device 718 includes a mold feeding mechanism 7181 and a first power mechanism 7182. One end of the mold feeding mechanism 7181 is connected to the first lower mold mechanism 71, and the other end is detachably connected to the first power mechanism 7182. The sealing strip insert clamp assembly is detachably mounted on the mold feeding mechanism 7181. The mold feeding mechanism 7181 includes a mold feeding mounting plate 71811 and a second power connection block 71812. The upper part is provided with a trapezoidal guide groove, and at the end away from the first power mechanism 7182, a set of L-shaped limiting blocks 718111 are provided on both sides of the trapezoidal guide groove. At the end closer to the first power mechanism 7182, a limiting block 71813 is provided. The second power connecting block 71812 is slidably installed below the mold mounting plate 71811 via a linear slide rail. The two sides of the second power connecting block 71812 near the end of the first power mechanism 7182 are provided with quick-connect guide grooves 718121. The first power mechanism... The structure 7182 includes a mounting block 71821 and a first drive cylinder 71822. The mounting block 71821 is provided with a quick-change groove 718211. The output end of the first drive cylinder 71822 passes through the mounting block 71821. A connector 718221 is provided on the outside of the mounting block 71821. The end of the connector 718221 is provided with a stepped head that can be inserted into the quick-connect guide groove 718121. The shape of the quick-change groove 718211 matches the shape of the limiting block 71813 and the two can be inserted into each other. Multiple limit blocks 71813 can be arranged side by side, and the connector 718221 is set in the form of multiple steps. Since the first power mechanism 7182 has a heavy weight with the first drive cylinder 71822 and servo motor 71823, setting multiple limit blocks 71813 to cooperate with and lock the connector 718221 can effectively prevent the gravity at the tail end of the first power mechanism 7182 from being converted into an upward force on the second power connecting block 71812, which would cause the second power connecting block 71812 to slide poorly on the slide rail.

[0064] The mounting block 71821 is also provided with a push-pull elbow clamp 71824, the push-pull elbow clamp 71824 is connected to a pin 7186, the pin 7186 is located inside the mounting block 71821, the limiting block 71812 is provided with a pin hole 718122, and the pin 7186 can be inserted into the pin hole 718122.

[0065] In a preferred embodiment, the limiting block 71812 is a T-shaped limiting block, and the quick-change slot 718211 is a T-shaped slot, with trapezoidal guide sections at both ends of the quick-change slot 718211. It should be noted that the limiting block 71812 and quick-change slot 718211 in this embodiment are not limited to T-shapes; any structure capable of quick insertion is acceptable.

[0066] The mold mounting plate 71811 has a through groove in the middle, and a lifting cylinder 718123 is installed on the second power connection block 71812. The piston rod of the lifting cylinder 718123 can extend out of the through groove. An opening and closing cylinder 71814 is also provided on the side of the mold mounting plate 71811.

[0067] The installation and disassembly process of the first automatic soft strip feeding device 718 is as follows: Align the quick-change groove 718211 in the mounting block 71821 on the first power mechanism 7182 with the limiting block 71812 and insert it. After inserting it a certain distance, align the connector 718221 with the quick-connect guide groove 718121 on the second power connection block 71812, and then insert the mounting block 71821 into the limiting block 71812. At the same time, the connector 718221 will also be inserted into the second power connection block 71812 under the guidance of the quick-connect guide groove 718121. After the mounting block 71821 is fully inserted into the limiting block 71812, the push-pull elbow clamp 71824 is closed. The push-pull elbow clamp 71824 causes the pin 7186 to extend until it is inserted into the pin hole 718122 of the limiting block 71812. At this time, the mounting block 71821 is jointly limited by the limiting block 71812 and the pin 7186, and the first power mechanism 7182 is installed. Conversely, when disassembling the first power mechanism 7182, simply open the push-pull elbow clamp 71824 and pull out the first power mechanism 7182 as a whole.

[0068] The cooperation process between the first automatic soft strip feeding device 718 and the sealing strip insert clamp assembly is as follows: First, pull the lower guide 1032 and the upper guide 1031 forward until the tail of the guide rod 1035 stops against the clamping base 1034 and the clamping cover plate 1033. Then, place the soft sealing strip on the clamping base 1034 and the lower guide 1032, with the front end of the soft sealing strip flush with the lower guide 1032. Finally, close the clamping cover plate 1033. The locking rod 10332 on the clamping cover plate 1033 locks itself to the limit clamp 10341 on the clamping base 1034. The lower guide 1032 and the upper guide 1031 maintain the soft sealing strip in a folded state through the contouring cavity. The clamping base 1034 and the clamping cover plate 1033 press and clamp the soft sealing strip through the contouring cavity. The opening and closing cylinder 71814 on the first automatic soft strip feeding device 718 drives the opening and closing top block at its output end to rise. The robot then transports and installs the soft sealing strip insert clamp with the sealing strip installed on the first automatic soft strip feeding device 718 of the first injection molding corner mold, and engages with the trapezoidal guide groove on the mold mounting plate 71811 and the power top block at the output end. Servo motor 71823 drives first drive cylinder 71822 to extend. At the same time, first drive cylinder 71822 drives lifting cylinder 718123 to move forward on linear guide rail below mold mounting plate 71811. During the forward movement, the power push block at the output end of lifting cylinder 718123 pushes against the sealing strip insert clamp assembly that is fitted with it and moves forward together. During the forward movement, when entering L-shaped limit block 718111, L-shaped limit block 718111 limits and pushes the clamp contour base 1034 from top to bottom. In conjunction with trapezoidal guide groove, it restricts the sealing strip insert clamp assembly to move in trapezoidal guide groove, preventing positional deviation during movement.

[0069] When the lower contour guide 1032 and the upper contour guide 1031 at the front end of the sealing strip insert clamping assembly touch the limiting top block in front of the fourth mold cavity on the first injection molding corner mold, the lower contour guide 1032 and the upper contour guide 1031 stop moving. At this time, the contour cavity formed by the lower contour guide 1032 and the upper contour guide 1031 docks with the fourth mold cavity. Subsequently, under the continued forward drive of the first soft strip automatic feeding device 718, the clamping contour base 1034 and the clamping contour cover plate 1033 on the soft sealing strip clamping assembly hold the soft sealing strip and continue to move forward. With the mutual cooperation of the lower contour guide 1032 and the upper contour guide 1031 and the guide of the fourth mold cavity, the sealing strip is guided into the mold cavity and the mold joining process begins.

[0070] During the mold-joining process, the opening and closing cylinder 71814 drives the opening and closing top block to extend. Simultaneously, as the opening and closing top block rises, it presses against the flip rod 10331, causing it to rise as well. After the flip rod 10331 rises under force, it drives the fixture contouring top cover 1033 to rotate around the rotating shaft 1036, causing the locking rod 10332 on it to disengage from the limiting clamp 10341. At this time, the contouring cavity opens, thus preventing the product from breaking at the mold-joining point due to the clamping force of the contouring cavity causing the soft sealing strip to move together, which would affect the yield. After the fixture contouring top cover 1033 opens, the servo motor 71823 drives the first drive cylinder 71822 to retract and move it to the standby position. Subsequently, the robot drives the sealing strip insert clamp assembly to move backward in the trapezoidal guide groove until it disengages from the soft sealing strip.

[0071] The working method of the automated cutting and injection molding corner integration production line for sealing strips described in this embodiment is as follows: Taking the sealing strip of the rear door guide groove of an automobile as an example, the specific process is as follows: 1): The operator first loads the semi-finished top sealing strip onto the sheet metal 6 in the top strip punching equipment 3 and performs punching processing; then the semi-finished soft sealing strip is punched on the soft strip punching equipment 1. After processing, the semi-finished soft sealing strip is clamped onto the soft strip and soft strip clamping table 101 and then into the sealing strip insert clamping assembly; after the top sealing strip is processed, the operator suspends the sheet metal 6 with the first sealing strip 873 onto the transport line 4, and suspends the sealing strip insert clamping assembly with the second sealing strip 874 onto the first transport line 401. At this time, the manual operation is completed. Another worker punches the semi-finished soft strip sealing strip on the soft strip punching equipment 2. After processing, the third sealing strip is clamped into the insert clamp 841 on the reciprocating transport platform 102. At this time, the manual operation is completed; 2): The transport line 4 and the first transport line 401 respectively transport the first sealing strip 873 and the strip sheet metal 6 and the second sealing strip 874 and the sealing strip insert clamp assembly to the clamping position of the handling robot 5. The soft strip and insert clamp clamping reciprocating transport platform 102 transports the third sealing strip and insert clamp 841 to the clamping position of the handling robot 5; 3): The handling robot 5 first takes the second sealing strip 874 and the sealing strip insert clamp assembly from the first transport line 401 and transports them to the first injection corner mold on the first injection press 7. The soft strip and sealing strip insert clamp assembly, driven by the first soft strip automatic feeding device 718 on the first injection corner mold, inserts the soft strip into the fourth cavity of the first injection corner mold; Similarly, the transport robot 5 moves to remove the first sealing strip 873 and the mounting strip sheet metal 6 from the transport line 4 and transport them to the first injection molding corner mold on the first injection molding press 7. Under the drive of the first automatic feeding device 717 on the first injection molding corner mold, the first sealing strip 873 is inserted into the third mold cavity. Then the first injection molding corner mold begins to mold the corner. 4): After the first injection molding corner mold is closed, the transport robot 5, in conjunction with the opening mechanism on the first injection molding corner mold, separates the sealing strip insert clamp assembly from the second sealing strip 874 and puts the sealing strip insert clamp assembly back onto the first transport line 401. Then the first transport line 401 operates to transport another second sealing strip 874 and the sealing strip insert clamp assembly to the gripping position of the transport robot 5. 5): The handling robot 5 takes the third sealing strip and insert clamp 841 from the reciprocating transport platform 102 of the soft strip and insert clamp and transports it to the injection corner mold on the injection press 8. The third sealing strip and insert clamp 841 inserts the third sealing strip into the first mold cavity under the drive of the insert power drive mechanism 842 on the injection corner mold.6): After the first injection molding corner joint mold completes the corner joint, the transport robot 5 removes the first sealing strip 873 and the mounting strip sheet 6 from the first injection molding corner joint mold. At the same time, the first sealing strip 873 and the mounting strip sheet 6, along with the completed first sealing strip 873 and second sealing strip 874, detach from the first injection molding corner joint mold. Then, the transport robot 5 moves to transport the unjoined end of the first sealing strip 873 on the first sealing strip 873 and the mounting strip sheet 6 to the injection molding corner joint mold on the injection molding press 8. Under the drive of the insertion power mechanism 831 in the automatic strip feeding device 83 on the injection molding corner joint mold, the first sealing strip 873 and the mounting strip sheet 6 insert the strip into the mold cavity. Then, the mold begins to mold the corner joint. 7) When the corner joints at both ends of the first sealing strip 873 are completed, the handling robot 5 directly grabs the first sealing strip 873 from the injection molding corner joint mold and removes it from the strip sheet metal 6. At the same time, it removes the first sealing strip 873 and the third sealing strip with the completed corner joints from the mold. At this time, the rear door sealing strip is completed. The handling robot 5 moves to transport the rear door finished sealing strip 87 to the finished product conveyor belt of the finished product conveying and inspection packaging line 9. The finished product conveyor belt then transports the rear door finished sealing strip 87 to the finished product inspection and packaging area of ​​the finished product conveying and inspection packaging line 9 for inspection and packaging. 8) The handling robot 5 takes the insert clamp 841 out of the injection molding corner joint mold and puts it back on the soft strip and insert clamp clamping reciprocating transport platform 102. Then the soft strip and insert clamp clamping reciprocating transport platform 102 operates to transport another soft strip and insert clamp 841 to the robot gripping position and the empty insert clamp 841 back to the clamping position. 9): Finally, the handling robot 5 moves to remove the sheet metal strip 6 from the injection molding corner mold and places it back onto the transport line 4. Then, the transport line 4 operates, transporting the other first sealing strip 873 and the sheet metal strip 6 to the gripping position of the handling robot 5 for the next round of processing.

[0072] It should be noted that the finished product formed by the automated cutting and injection molding of the sealing strips on the above-mentioned integrated production line is shown in Figure 32.

[0073] It is conceivable that in the actual production process, the following equipment can be assembled according to actual needs: soft strip punching equipment 1, soft strip punching equipment 2, top strip punching equipment 3, transport line, handling robot 5, strip assembly sheet metal 6, first injection molding press 7, injection molding press 8, and finished product conveying, testing and packaging line 9. This allows them to complete the corner processing of the front door sealing strip or the rear door sealing strip. The front and rear door sealing strips can form a complete car door production line.

Claims

1. An integrated production line for injection molding corner joints of sealing strips, characterized in that, include: At least one transport line, a handling robot (5), a strip mounting sheet metal (6) for installing the top strip, a strip clamp (841) for installing the soft strip, and an injection molding press (8), wherein the transport line is located on one side of the injection molding press (8), and the handling robot (5) cooperates with the transport line and the injection molding press (8); The injection molding press (8) is provided with an injection molding corner mold, which includes a lower mold mechanism (81) and an upper mold mechanism (82). The upper mold mechanism (82) is located above the lower mold mechanism (81), and the two cooperate with each other. The lower mold mechanism (81) is provided with a first mold cavity and a second mold cavity. It also includes an automatic top bar feeding device (83) and an automatic soft bar feeding device (84). The automatic top bar feeding device (83) and the automatic soft bar feeding device (84) are respectively located at the feeding points of the top bar and the soft bar of the lower mold mechanism (81). During operation, the sheet metal (6) with the top bar is placed on the transport line. The transport line transports the top bar and the sheet metal (6) to the loading position of the injection press (8). The handling robot (5) transfers the top bar and the sheet metal (6) to the automatic top bar feeding device (83). The automatic top bar feeding device (83) pushes the sheet metal (6) with the top bar forward until one end of the top bar enters the feed. The designated position of the second mold cavity; at the same time, the insert clamp (841) containing the soft strip is placed on the transport line, the transport line transports the insert clamp (841) containing the soft strip to the loading position of the injection press (8), the handling robot (5) transfers the insert clamp containing the soft strip to the automatic soft strip feeding device (84), the automatic soft strip feeding device (84) pushes the insert clamp (841) containing the soft strip forward until one end of the soft strip reaches the designated position of the first mold cavity, the top strip and the soft strip are injection molded and joined by the injection corner mold, and the product with the injection corner joined is transported to the designated position by the finished product conveying and inspection packaging line (9).

2. The integrated production line for injection molding corner joints of sealing strips according to claim 1, characterized in that: The lower mold mechanism (81) includes a first lower mold assembly (8101) and a second lower mold movable plate (8102). The second lower mold movable plate (8102) is located above the first lower mold assembly (8101), and the two are connected in a lifting manner. A lifting drive mechanism (8103) for lifting the second lower mold movable plate (8102) is provided on the outside of the first lower mold assembly (8101). The second lower mold movable plate (8102) is provided with a lower mold extension section (8111), the lower mold extension section (8111) is provided with a first sliding groove (8112), the first sliding groove (8112) is provided with a sliding block (8113), and the shape of the first sliding groove (8112) can be adjusted as needed; The automatic top bar feeding device (83) includes a bar insertion power mechanism (831) and a bar insertion sheet metal clamp (832). The insert power mechanism (831) includes a first insert drive mechanism (8311), a drive connector (8312), and a power connection block (8313). The insert sheet metal fixture (832) is located on the lower mold extension section (8111). The insert power mechanism (831) is located below the lower mold extension section (8111). The insert sheet metal (6) is located above the insert sheet metal fixture (832). The first insert drive mechanism (8311) is connected to the lower mold extension section (8111) through the mounting base. The output end of the first insert drive mechanism (8311) is connected to the power connection block (8313) through the drive connector (8312). The power connection block (8313) is located below the sliding block (8113) and is simultaneously connected to the insert sheet metal fixture (832) through the power rotating column (8314).

3. The integrated production line for injection molding corner joints of sealing strips according to claim 1, characterized in that: The injection molding corner mold also includes a demolding mechanism (85), which is located on the lower mold mechanism (81) and cooperates with the automatic feeding device for the top strip (83) and the automatic feeding device for the soft strip (84). The lower mold mechanism (81) is also provided with an installation platform (811), which is inclined. The installation platform (811) is provided with a set of guide grooves (812), and a set of first limiting blocks (813) is provided on the outside of the guide grooves (812). A set of second limiting blocks (814) is provided on the end of the installation platform (811) away from the insert power drive mechanism (842). An inclined top block (815) is provided on one side of the installation platform (811) of the lower mold mechanism (81). A support block (816) is provided on one side of the first mold cavity of the lower mold mechanism (81). The lower mold mechanism (81) is provided with a plate insert mechanism (817) and a slider assembly (818) on both sides of the second mold cavity, and a second slider (819) is provided on the side opposite to the slider assembly (818) of the second mold cavity.

4. The integrated production line for injection molding corner joints of sealing strips according to claim 3, characterized in that: The automatic soft strip feeding device (84) includes a strip insertion power drive mechanism (842), which is located on the lower mold mechanism (81) and installed at the lower end of the installation platform (811); the output end of the strip insertion power drive mechanism (842) is connected to the strip insertion clamp (841). The insert power drive mechanism (842) includes a sliding guide mounting plate (8421), the sliding guide mounting plate (8421) is provided with a sliding groove, the sliding groove is provided with a power slider (8422), and the sliding guide mounting plate (8421) is provided with a set of limiting pressure blocks (8423) on both sides of the power slider (8422). Insertion drive mechanism (8424) is connected to lower mold mechanism (81) via mounting base, and its output end is connected to power slider (8422) via flange connecting block (84241). Insertion clamp (841) is mounted on mounting platform (811) and connected to power slider (8422).

5. The integrated production line for injection molding corner joints of sealing strips according to claim 4, characterized in that: The insert clamp (841) includes a clamp base plate (8411), a set of guide blocks (8412), an insert plate assembly (8413), a slider (8414), and a pressing mechanism (8415). The clamp base plate (8411) is provided with a lower mold cavity, and a slide rail assembly (8416) is provided on one side of the lower mold cavity. The pressing mechanism (8415) is connected to the slide plate in the slide rail assembly (8416). The guide block (8412) is located below the clamp base plate (8411) and is slidably connected to the guide groove (812). The insert plate assembly (8413) and the slider (8414) are disposed opposite to each other on both sides of the lower mold cavity, and the slider (8414) is slidably connected to the slide rail assembly (8416). The pressing block mechanism (8415) is disposed on one side of the slider (8414). The insert plate assembly (8413) includes an upper insert plate assembly (84131) and a lower insert plate assembly (84132). The upper insert plate assembly (84131) is located above the lower insert plate assembly (84132), and the upper insert plate assembly (84131) is hinged to the lower mold mechanism (81) via a transition frame. The lower insert plate assembly (84132) is slidably connected to the second lower mold movable plate (8102). The pressing block mechanism (8415) includes a flipping base (84151), a flipping connecting block (84152), and a pressing block. Block (84153), the flip base (84151) is mounted on the lower mold mechanism (81), and one side of the flip base (84151) is connected to the slide rail assembly (8416) through the connecting block (841511). The flip connecting block (84152) is located on the flip base (84151), one end of which is provided with a roller (841521), and the other end is connected to the pressure block (84153). The roller (841521) is located above the inclined top block (815) and moves along the inclined top block (815).

6. The integrated production line for injection molding of sealing strip corners according to claim 5, characterized in that: The insert plate mechanism (817) is mounted on the lower mold mechanism (81) and is movably connected to the lower mold mechanism (81); the insert plate mechanism (817) includes a lower insert plate module (8171), a middle insert plate module (8172) and an upper insert plate module (8173). The lower insert plate module (8171), the middle insert plate module (8172) and the upper insert plate module (8173) are arranged from bottom to top, and are movably connected to the slide rail (104) on the lower mold mechanism (81) on both sides through a sliding frame (8174). The shape of the ends of the lower insert plate module (8171), the middle insert plate module (8172) and the upper insert plate module (8173) matches the shape of the sealing strip. The upper insert module (8173) includes a first upper insert (81731), a second upper insert (81732), and a third upper insert (81733). The first upper insert (81731), the second upper insert (81732), and the third upper insert (81733) are all U-shaped. The second upper insert (81732) is located inside the first upper insert (81731), and the third upper insert (81733) is located inside the second upper insert (81732).

7. The integrated production line for injection molding of sealing strip corners according to claim 6, characterized in that: The demolding mechanism (85) includes a first demolding mechanism, a second demolding mechanism, and a third demolding mechanism. The first demolding mechanism includes a first demolding power mechanism (851). The output end of the first demolding power mechanism (851) is provided with a first demolding connecting rod (852). The first demolding connecting rod (852) is connected to the insert plate assembly (8413), the slider (8414), and the pressure block mechanism (8415) to drive the insert plate assembly (8413) and the pressure block mechanism (8415) to flip up and the slider (8414) to move. The output end of the first demolding power mechanism (851) is connected to the insert plate assembly (8413), the slider (8414), and the pressure block mechanism (8415) to drive the insert plate assembly (8413) and the pressure block mechanism (8415) to flip up and the slider (8414) to move. The second demolding mechanism includes a second demolding power mechanism (853), and the output end of the second demolding power mechanism (853) is provided with a second demolding link (854). The second demolding link (854) is connected to the insert plate mechanism (817) and the lower insert plate assembly (84132) for moving the insert plate mechanism (817) and the lower insert plate assembly (84132). The third demolding mechanism includes a third demolding power mechanism (855), the output end of which is provided with a third demolding connecting rod (856) for driving the slider and the second slider (819) in the slider assembly (818) to move; the first demolding connecting rod (852) is provided with a first adapter block (8521) at one end near the first demolding power mechanism (851), the first adapter block (8521) is provided with an opening slot, and the slide plate in the slide rail assembly (8416) is provided with a connecting rod (84161), the connecting rod (84161) is located in the opening slot; The end of the second demolding link (854) is located at the second adapter block (8541). The second adapter block (8541) is provided with a drive module (85411) for driving the insert plate mechanism (817). The drive part of the drive module (85411) is located in the corresponding grooves of the lower insert plate module (8171) and the middle insert plate module (8172) of the insert plate mechanism (817). The end of the second demolding link (854) is provided with a through hole. A third adapter block (85412) is provided in the through hole. The other end of the third adapter block (85412) is connected to a power rod hook (85413) for driving the insert plate assembly (8413) to move. The lower part of the insert plate assembly (8413) is connected to the power rod hook (85413) through a connecting rod (84313). The middle insert plate module (8172) is provided with a set of fixed seats, and the fixed seats are provided with a set of positioning bolts (81721). When demolding, the second demolding linkage (854) drives the second adapter block (8541) to drive the driving part of the driving module (85411) to move forward. Since the second adapter block (8541) and the third adapter block (85412) are both connected to the second demolding linkage (854), when the second demolding linkage (854) drives the second adapter block (8541) to drive the driving part of the driving module (85411) to move, it will drive the insert plate mechanism (817) and the lower insert plate in the lower insert plate assembly (84132) to move away from the mold cavity along the power direction. The third demolding link (856) includes a main rod and a branch rod. The branch rod is located on one side of the main rod and a connecting rod (8561) is provided between them. The two ends of the connecting rod (8561) are respectively provided with waist holes. The main rod and the branch rod are connected to the corresponding waist holes through a connecting shaft. The sliding plate in the slider assembly (818) is connected to the corresponding connecting shaft. The connecting shaft is located in the waist hole at one end of the connecting rod (8561). The second slider (819) is located at the end of the main rod. During operation, the third demolding power mechanism (855) drives the third demolding link (856) to extend. During the extension of the third demolding link (856), the second slider (819) will be driven to move away from the mold cavity along the power direction. At the same time, the connecting shaft on the main rod of the third demolding link and the branch rod of the third demolding link moves in the waist hole. During this process, the slide plate in the slider assembly (818) drives the slider assembly (818) to retract, so that the mold cavity is in an open state.

8. The seal strip injection molded corner joint integrated assembly line of claim 2, wherein: It also includes an auxiliary demolding mechanism (86), which includes a third slider (861), a drive frame (862), and an auxiliary demolding drive mechanism (863). A mounting plate (8114) is provided at one end of the lower mold extension section (8111) on the second lower mold movable plate (8102). A second sliding groove (81141) is provided on the mounting plate (8114). The third slider (861) is located above the mounting plate (8114) and on one side of the slider assembly (818). The auxiliary demolding drive mechanism (863) includes a first sliding plate (8631), an auxiliary drive frame (8632), and a demolding mechanism. The drive cylinder (8633) is located in the sliding groove of the second lower mold movable plate (8102). A set of slide rails are provided on both sides of the sliding groove. The output end of the demolding drive cylinder (8633) is connected to the first sliding plate (8631). One end of the auxiliary drive frame (8632) is connected to the first sliding plate (8631), and the other end is provided with a through hole and extends to the top of the second sliding groove (81141). The drive frame (862) is inserted into the through hole of the auxiliary drive frame (8632) and extends into the second sliding groove (81141). The drive frame (862) is connected to the third slider (861).

9. The seal strip injection molded corner joint integrated assembly line of claim 2, wherein: The insert sheet metal clamp (832) includes a first clamp base plate (8321). One side of the first clamp base plate (8321) is provided with at least one set of first positioning member (83211) and second positioning member (83212). The first positioning member (83211) is provided with a positioning groove, and the second positioning member (83212) is provided with a central cross positioning groove. It also includes a sheet metal fixing assembly (8322), which includes a sheet metal pressing block (83221) and a pressing block driving cylinder (83222). The pressing block driving cylinder (83222) is mounted on the first clamp base plate (8321), and its output end is connected to the sheet metal pressing block (83221). It also includes a sealing strip positioning assembly (8323), which includes a positioning drive cylinder (83231) and an elbow clamp positioning assembly (83232). The positioning drive cylinder (83231) is mounted on the first clamp base plate (8321), and the elbow clamp positioning assembly (83232) is connected to the output end of the positioning drive cylinder (83231).

10. An integrated flow line of automatic cutting and injection corner joint of sealing strip, characterized in that, The integrated production line for injection molding of sealing strip corners as described in any one of claims 1 to 9 further includes a soft strip punching device one (1), a soft strip punching device two (2), a top strip punching device (3), a first transport line (401) for transferring the second soft strip, and a first injection molding press (7). The soft strip punching device one (1), the soft strip punching device two (2), the top strip punching device (3), the first transport line (401) for conveying the soft strip, and the first injection molding press (7) are respectively located at corresponding processing stations. The soft strip punching device one (1) is located on one side of the first transport line (401), and a soft strip and soft strip clamping table (101) is provided between the two. The handling robot (5) cooperates with the transport line, the first transport line (401), the first injection molding press (7), the injection molding press (8), the finished product conveying and inspection packaging line (9).

Images