In-mold riveting system and working method thereof

Abstract

The invention discloses an in-mold riveting system and a working method thereof.The in-mold riveting system comprises an upper mold, a lower mold, a feeding guide rail and a feeding mechanism, a riveting head is arranged in the upper mold, a riveting station is arranged in the lower mold, and the feeding guide rail is installed on the lower mold and matched with the riveting station; the discharging end of the feeding mechanism is detachably connected with the feeding guide rail through a buckle structure. The in-mold riveting system is used in the working method. The automatic riveting device has the beneficial effects that the feeding mechanism is arranged and can automatically convey the riveting columns to the riveting station of the lower die, and then in-die riveting of products can be achieved through the riveting heads in the upper die in the punching process, so that the working time is saved, and the production efficiency is improved; and on the other hand, due to the arrangement of the buckle structure, the feeding mechanism and the feeding guide rail can be rapidly in butt joint, and the flexibility of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of stamping dies, and in particular to an in-die riveting system and a working method thereof. Background Art

[0002] like Figure 1 As shown, an automotive component product A needs to be combined with the rivet stud by riveting process; in the prior art, the product A needs to be formed by a stamping die first, and then an additional riveting device is used to manually place the rivet stud to rivet the product A separately. This riveting system is time-consuming and labor-intensive and has low work efficiency. At the same time, due to the variability of manual placement by the staff, poor riveting may occur, thereby reducing product quality. Therefore, an in-mold riveting system and a working method thereof are proposed to solve the above technical problems. Summary of the invention

[0003] One of the purposes of the present application is to provide an in-mold riveting system.

[0004] Another object of the present application is to provide a working method of in-mold riveting.

[0005] In order to achieve the above purpose, the technical solution adopted in the present application is: an in-mold riveting system, including an upper mold, a lower mold, a feeding guide rail and a feeding mechanism, a riveting head is provided in the upper mold, a riveting station is provided in the lower mold, the feeding guide rail is installed in the lower mold and cooperates with the riveting station, and the unloading end of the feeding mechanism is detachably connected to the feeding guide rail through a snap structure; when riveting, the feeding mechanism is suitable for conveying the rivet column to the riveting station through the feeding guide rail; then the upper mold and the lower mold are closed, and then the riveting head is suitable for riveting the rivet column with the product.

[0006] Preferably, the feeding guide rail includes a fixed guide rail and a movable guide rail, the fixed guide rail is fixedly connected to the lower mold and connected to the unloading end, the movable guide rail is vertically slidably installed on the lower mold and connected to the lower mold through an adjusting component, and the two ends of the movable guide rail are respectively docked with the fixed guide rail and the riveting station; when riveting, the movable guide rail is suitable for moving vertically downward with the cooperation of the adjusting component, thereby providing an avoidance space for the riveting of the product, and at this time the movable guide rail is disengaged from the riveting station.

[0007] Preferably, the adjustment component includes an elastic member, both ends of which are respectively connected to the movable guide rail and the lower mold; when the upper mold and the lower mold are closed, the movable guide rail is suitable for moving downward under the extrusion of the upper mold; when the upper mold and the lower mold are opened, the movable guide rail is suitable for returning to the original position and moving upward under the action of elastic force.

[0008] Preferably, the adjustment assembly includes a telescopic device, which is installed on the lower mold and the piston end is connected to the movable guide rail; the telescopic device is suitable for driving the movable guide rail to move up and down under the action of the control system, thereby adapting to the riveting of the product.

[0009] Preferably, a positioning rod is installed in the upper die; when riveting is performed, the positioning rod is suitable for moving downward under the drive of the upper die, so that the positioning rod is plugged into and matched with the rivet column in the fixed guide rail close to the movable guide rail, thereby stopping the transportation of the rivet column.

[0010] Preferably, a baffle is installed on the side of the movable guide rail close to the fixed guide rail, and a guide groove cooperating with the fixed guide rail is provided on the baffle; when riveting is performed, the baffle is suitable for moving downward under the drive of the movable guide rail, so that the guide groove is misaligned with the fixed guide rail, thereby stopping the transportation of the rivet column.

[0011] Preferably, the feeding mechanism includes a vibration plate, a material guide hose and a material guide joint, the two ends of the material guide hose are respectively connected to the vibration plate and the material guide joint, and the material guide joint forms the unloading end of the feeding mechanism; the feeding mechanism cooperates with the feeding guide rail to make the conveying direction of the rivet column perpendicular to the conveying direction of the product.

[0012] Preferably, a card slot is provided at the bottom end of the material guide connector, and the snap-in structure includes a card column, which is elastically and vertically slidably installed at the front end of the inner part of the feeding guide rail; during installation, the material guide connector is suitable for being inserted into the feeding guide rail until the card column cooperates with the card slot under the action of elastic force, thereby realizing the locking installation of the material guide connector.

[0013] Preferably, a groove body is provided on the outside of the clamping column, and the buckle structure also includes an operating rod, which is rotatably installed in the feeding guide rail and the first end cooperates with the groove body; when disassembling, the second end of the operating rod is driven to rotate, so that the first end of the operating rod rotates and squeezes the clamping column to move downward and away from the clamping slot, thereby achieving the unlocking of the material guide joint.

[0014] A working method for in-mold riveting, using the above-mentioned in-mold riveting system, includes the following steps: S100: conveying the rivet stud to the riveting station in the lower mold through the feeding guide rail by a feeding mechanism; S200: when the upper mold and the lower mold are closed, the movable guide rail in the feeding guide rail moves downward synchronously, thereby providing an escape space for the riveting of the product; and at this time, the rivet stud in the feeding guide rail stops conveying under the action of the positioning rod; S300: after the upper mold and the lower mold are closed, the rivet head in the upper mold rivets the rivet stud with the product, thereby completing the riveting of the product on the material strip; S400: the upper mold and the lower mold are opened, at this time the movable guide rail is reset, and the rivet stud in the feeding guide rail continues to be conveyed to the riveting station; then the material strip advances one pitch; S500: repeating steps S200 to S400 until the stamping and riveting processing of the product on the entire material strip is completed.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The present invention is provided with a feeding mechanism, which can automatically transport the rivet column to the riveting station of the lower die, and then during the stamping process, the riveted head in the upper die can realize the in-die riveting of the product, thereby saving working time and improving production efficiency; on the other hand, the setting of the snap structure can enable the feeding mechanism to be quickly connected with the feeding guide rail, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the product A of the present invention after being riveted with the rivet stud.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the top view of the lower mold structure of the present invention.

[0020] Figure 4 For the present invention Figure 3 A partial schematic diagram of position B in the middle.

[0021] Figure 5 It is a partial cross-sectional structural schematic diagram of the present invention.

[0022] Figure 6 It is a schematic diagram of the state of the lower die during riveting of the present invention.

[0023] Figure 7 It is a schematic diagram of the material guide joint of the present invention when it cooperates with the fixed guide rail.

[0024] Figure 8 It is a schematic diagram of the material guide joint and the fixed guide rail of the present invention when they are separated.

[0025] Fig. 9It is a schematic diagram of the principle of the operation rod and the clamping column of the present invention when they cooperate with each other.

[0026] In the figure: 1. upper die; 2. lower die; 3. feeding mechanism; 301. vibration plate; 302. material guide hose; 303. material guide joint; 4. feeding guide rail; 401. fixed guide rail; 402. movable guide rail; 5. riveting station; 6. riveting head; 7. positioning rod; 8. adjustment assembly; 9. buckle structure; 901. clamping column; 902. operating lever; 10. clamping slot; 11. slot body. DETAILED DESCRIPTION

[0027] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] One of the preferred embodiments of the present application is as follows: Figures 1 to 9 As shown, an in-mold riveting system includes a stamping mold body (which includes an upper mold 1 and a lower mold 2), a feed guide 4 and a loading mechanism 3, a riveting head 6 is arranged in the upper mold 1, a riveting station 5 is arranged in the lower mold 2, the feed guide 4 is installed on the lower mold 2 and cooperates with the riveting station 5, and the unloading end of the loading mechanism 3 is detachably connected to the feed guide 4 through a snap structure 9.

[0031] It is understandable that the stamping die can punch, chamfer, trim, bend, etc. the material strip, and finally cut and blank the process, while the riveting process is located between the forming and cutting and blanking processes. The structural shape formed by the material strip after the forming process is called product A. This design is to directly rivet product A after it is formed, and finally make the blanked product A have riveted rivet studs, so there is no need to set up an additional work line for the riveting process, thereby saving work time and improving production efficiency. Furthermore, since the riveting process is automatically completed in the mold, it avoids the errors that may be caused by manual operation, and improves the riveting accuracy and product quality.

[0032] Specifically, when riveting, the feeding mechanism 3 can transport the rivet column to the feeding guide 4, and then the feeding guide 4 can transport it to the riveting station 5. When the formed product A is transported to the riveting station 5, the upper mold 1 and the lower mold 2 are closed. At this time, the rivet head 6 in the upper mold 1 will rivet the product A with the rivet column in this riveting station 5, thereby realizing the in-mold riveting process for product A.

[0033] It should be noted that the automatic conveying of the material strip (i.e., product A) is a prior art in the stamping die. Of course, how the riveting head 6 is riveted is also a prior art known to those skilled in the art, so it will not be described in detail. Moreover, in the existing riveting equipment, the riveting pressure generally needs to be provided by a driving device (such as a hydraulic cylinder) alone, and when the in-mold riveting is performed, when the mold is closed (stamping), the rivet column or rivet column is tightly connected to another part by mechanical force or hydraulic pressure, that is, at this time, the mold itself can provide sufficient pressure for riveting, so that no additional driving device is required, which further simplifies the equipment structure and reduces costs. Of course, the specific process of riveting is a separate process independent of the mold, so each riveting head 6 can be applied to different riveting situations. For example, in the in-mold riveting of the progressive die, the stamping action of the mold drives the riveting head 6 to apply pressure to the rivet column (or rivet), so that they are connected to the corresponding parts together, and finally the riveting process is completed.

[0034] As a further description of the above embodiment: Figure 4 As shown, the feeding guide rail 4 includes a fixed guide rail 401 and a movable guide rail 402. The fixed guide rail 401 is fixedly installed on the lower mold 2 and connected to the unloading end (of the feeding mechanism 3). The movable guide rail 402 is vertically slidably installed on the lower mold 2 and connected to the lower mold 2 through the adjustment component 8. The two ends of the movable guide rail 402 are respectively docked with the fixed guide rail 401 and the riveting station 5.

[0035] It is understandable that, during the actual riveting process, the arrangement of the feed guide rail 4 may interfere with the riveting of the product A. For example: Figure 1As shown, both ends of product A are curved structures, and the middle of product A is a riveted part, so when product A is placed flat, the feed rail 4 will block the flatness of product A. Therefore, in this design, the feed rail 4 is divided into a movable active rail 402. Specifically: when riveting, the active rail 402 can move vertically downward with the cooperation of the adjustment component 8, as shown in FIG. Figure 4 As shown, the space after the downward movement can be used for the flat riveting of product A, so that the riveting process can proceed smoothly.

[0036] On the other hand, after the movable guide rail 402 moves downward, that is, the feed guide rail 4 and the riveting station 5 are disengaged, which can ensure that the riveting station 5 is independent during the riveting process, that is, the riveting station 5 has just one rivet column, and this rivet column will not be affected by the conveying force of other rivet columns, further improving the accuracy and stability of riveting. In this application, the main purpose is to convey rectangular rivet columns, that is, the feed guide rail 4 adopts a rectangular shape that matches the rectangular rivet column, so that the rectangular rivet column will not rotate axially during the conveying process, so that each riveting can be performed at an accurate position, improving the accuracy and consistency of riveting.

[0037] The present application does not specifically limit the structure of the adjustment component 8, including but not limited to the following two types:

[0038] Structure 1: The adjustment component 8 includes an elastic member (such as a spring), and the two ends of the elastic member are respectively connected to the movable guide rail 402 and the lower mold 2. It can be understood that when the upper mold 1 and the lower mold 2 are closed, the upper mold 1 will squeeze the movable guide rail 402 to move downward. When the upper mold 1 and the lower mold 2 are opened (separated), the movable guide rail 402 will lose the squeezing effect of the upper mold 1, and then reset and move upward under the action of the elastic force.

[0039] Structure 2: The adjustment assembly 8 includes a telescopic device, which is installed on the lower mold 2 and the piston end is connected to the movable guide rail 402. Of course, the telescopic device is electrically connected to the control system of the stamping mold. It can be understood that when the mold is closed, the telescopic device will shorten and drive the movable guide rail 402 to automatically move downward; and when the mold is opened, the telescopic device will extend and drive the movable guide rail 402 to automatically move upward, thereby adapting to the riveting process of product A.

[0040] It should be noted that structure one can use the properties of the spring itself to move up and down adaptively, and structure two uses a telescopic device to perform precise up and down movement control; both methods can meet actual needs, and technicians in this field can choose according to actual conditions. It should be known that the specific structure and working principle of the telescopic device mentioned above are well-known technologies for technicians in this field, so they will not be elaborated in detail here; common telescopic devices include hydraulic cylinders, pneumatic cylinders, and linear motors, etc., and technicians in this field can choose according to actual needs. Of course, the control circuit of the control system can be realized by simple programming by technicians in this field, which is also common knowledge in this field, so the control method and circuit connection will not be explained in detail.

[0041] It should be known that if Figure 4 As shown, when the movable guide rail 402 moves downward and separates and misaligns with the fixed guide rail 401, the feeding mechanism 3 should stop conveying, otherwise the rivet studs in the fixed guide rail 401 will continue to move and convey and fall to the top position of the movable guide rail 402, which will cause the rivet studs to scatter everywhere, and the rivet studs will also interfere with the clamping of the stamping die, which may seriously damage the die. As we know, the stamping process is rapid and continuous, so if the feeding mechanism 3 always performs the "stop-start" process, it will make the feeding mechanism 3 prone to failure, and at this time the rivet studs in the fixed guide rail 401 are in a free state, and the rivet studs are also prone to fall under the vibration force of the stamping.

[0042] It should be noted that if a separate feeding guide rail 4 structure is adopted, that is, there is no need to set up a movable guide rail 402 to avoid interference with product A, then the positioning rod 7 can be inserted into any rivet column in the feeding guide rail 4. In this way, the conveying force of the rivet column can be cut off, and the rivet column in the riveting station 5 will not be affected by the conveying force during the riveting process.

[0043] Therefore, in order to solve the above technical problems, two methods can be used to solve them:

[0044] Method 1: If Figure 5 and Figure 6 As shown, a positioning rod 7 can be installed in the upper die 1. It can be understood that when riveting the die, the positioning rod 7 will move downward under the drive of the upper die 1, so that the positioning rod 7 is inserted into any rivet column in the fixed guide rail 401, so that the rivet column can be locked, and the rivet column stops being transported; that is, there is no need to stop the feeding mechanism 3. Similarly, when the upper die 1 drives the positioning rod 7 to move up and away from the die, the locking of the rivet column is released at this time, so that the rivet column continues to be transported, that is, the next rivet column will move and slide into the position corresponding to the positioning rod 7.

[0045] Further preferably, the locking rivet stud is preferably located near the movable guide rail 402, such as Figure 4 As shown, that is, the rivet stud at position a; in layman's terms, it is to lock a rivet stud located at the very end of the fixed guide rail 401, because the rivet stud here is most likely to slide out from the fixed guide rail 401, so locking it can prevent the rivet stud from falling.

[0046] Mode 2 (not shown): A baffle is installed on the side of the movable guide rail 402 close to the fixed guide rail 401, and a guide groove is provided on the baffle to match the fixed guide rail 401. It can be understood that when the riveting die is closed, the baffle can be moved downward under the drive of the movable guide rail 402 to make the guide groove misaligned with the fixed guide rail 401, that is, the baffle can block the tail of the fixed guide rail 401 at this time, thereby stopping the conveyance of the rivet column.

[0047] It should be noted that the structure of method 1 is the simplest and most reliable, because there is a through hole in the middle of the rivet column, and the bottom end of the positioning rod 7 can be set to a conical structure, that is, the positioning rod 7 can be easily inserted into the through hole, thereby realizing the (straightening) locking of the rivet column. When method 2 is adopted, it is necessary to ensure that the rivet column at the tail of the fixed guide rail 401 and the rivet column at the head of the movable guide rail 402 are in positive correspondence with the baffle, and it is best to have a chamfer structure at the top of the rivet column and the inner top of the guide groove, otherwise it is easy to cause hard extrusion damage between the baffle and the rivet column. In the case of rectangular rivet columns in the present application, the positioning rod 7 is the preferred setting method, and technicians in this field can also choose to use the structure in method 2 when combined with rivet columns (or rivets) of other structural forms.

[0048] In one of the embodiments of the present application, Figure 2 , Figure 3 and Figure 7 As shown, the feeding mechanism 3 includes a vibration plate 301, a material guiding hose 302 and a material guiding joint 303. The two ends of the material guiding hose 302 are respectively connected to the vibration plate 301 and the material guiding joint 303. The material guiding joint 303 forms the unloading end of the feeding mechanism 3. The feeding mechanism 3 cooperates with the feeding guide rail 4 to make the conveying direction of the rivet column perpendicular to the conveying direction of the product A.

[0049] Specifically, Figure 3 As shown, the conveying direction of product A is x, and the conveying direction of rivet stud is y, and x and y are perpendicular to each other. Such a setting can make the rivet stud fall smoothly into the feeding guide rail 4 and the riveting station 5, avoiding the deflection or jamming of the rivet stud during the conveying process. Of course, the (feeding) vibration plate 301 is also a device known to those skilled in the art, so its structure and principle will not be described in detail.

[0050] Furthermore, the flexible setting of the material guide hose 302 allows it to be adaptively bent according to different working environments and needs during the specific installation process, and the snap-on structure 9 allows the material guide connector 303 to be quickly disassembled, thereby ensuring that the feeding mechanism 3 can be flexibly installed and disassembled to adapt to different installation requirements.

[0051] As a further description of the above embodiment: Figure 8 and Fig. 9 As shown, a card slot 10 is provided at the bottom end of the material guide joint 303 , and the buckle structure 9 includes a card column 901 , and the card column 901 is elastically and vertically slidably installed at the front end position inside the feeding guide rail 4 (through a spring).

[0052] It is understandable that during installation, the material guide connector 303 is inserted into the material feed guide rail 4, and the clamping column 901 compresses the spring under the extrusion force; when the clamping slot 10 at the bottom of the material guide connector 303 corresponds to the clamping column 901, the clamping column 901 moves upward under the elastic force and enters the clamping slot 10, thereby locking the material guide connector 303. During disassembly, the clamping column 901 only needs to be pulled downward to separate the clamping column 901 from the clamping slot 10, and then the material guide connector 303 is pulled out, which is simple and convenient.

[0053] Further preferably, Fig. 9 As shown, a slot body 11 is provided outside the clamping column 901, and the buckle structure 9 also includes an operating rod 902, which is rotatably installed in the feeding guide rail 4 and the first end (left end) of the operating rod 902 cooperates with the slot body 11. It can be understood that when disassembling, the second end (right end) of the operating rod 902 is rotated upward, so that the first end (left end) of the operating rod 902 is rotated downward and squeezes the inner bottom end of the slot body 11, which can drive the clamping column 901 to move downward and away from the clamping slot 10, so that the locking of the material guide joint 303 can be released. This method is changed from the original method of pulling the clamping column 901 downward at the bottom (of the feeding guide rail 4) to the current method of pressing and rotating at the front end (of the feeding guide rail 4), which is more convenient for the staff to operate.

[0054] Further preferably, we set the rotating installation point of the operating rod 902 and the feeding guide rail 4 as the rotating point, so that the operating rod 902 is divided into two parts at the rotating point, namely the first section (i.e. the left section) and the second section (i.e. the right section), and the first section cooperates with the groove body 11, and the second section is the operating end, wherein the length of the second section is greater than the length of the first section, and its longer length can provide a larger force arm, that is, according to the principle of lever, it makes the staff more labor-saving when pressing.

[0055] Further preferably, Figure 8 and Fig. 9As shown in the figure, the structural form of the operating rod 902 can be set as follows: its first section is in a "one" shape structure, and the second section is in a "匚" or "U" shape structure. The first section is connected to the middle position of the second section. As we know, the operating rod 902 is located at the front end of the feeding guide rail 4, and the feeding joint 303 is also inserted from the front end position of the feeding guide rail 4. After such connection, the operating rod 902 will be located directly below the feeding joint 303 and the feeding hose 302, thus blocking the subsequent拨动 of the operating rod 902. And in this design, by setting the operating end into the above special structure, the operating rod 902 can be located at the positions on both sides below the feeding joint 303, so that the operating rod 902 can be conveniently拨动 to realize the quick disassembly and assembly of the feeding joint 303.

[0056] Another aspect of the present application also provides a working method for in-mold riveting. Using the above in-mold riveting system, it includes the following steps:

[0057] S100: First, the feeding mechanism 3 orderly conveys the riveting posts through the feeding guide rail 4 to the riveting station 5 position in the lower die 2.

[0058] S200: When the upper die 1 and the lower die 2 are closed, at this time, the movable guide rail 402 in the feeding guide rail 4 moves downward synchronously, thus providing an avoidance space for the riveting of the product A; and at this time, the riveting posts in the feeding guide rail 4 stop conveying under the action of the positioning rod 7, which can prevent the over-conveying of the riveting posts, and at this time, there is only one riveting post in the riveting station 5.

[0059] S300: After the upper die 1 and the lower die 2 are closed, at this time, the riveting process is carried out, that is, the riveting joint 6 in the upper die 1 rivets the riveting post and the product A, thus completing the riveting of the product A on the strip.

[0060] S400: The upper die 1 and the lower die 2 are separated. At this time, the movable guide rail 402 is reset under the action of the adjusting component 8, and the riveting posts in the feeding guide rail 4 continue to be conveyed to the riveting station 5, thus preparing for the riveting of the next product A; finally, the strip will move forward by one pitch under the action of the stamping die, that is, the next product A moves to the riveting station 5.

[0061] S500: Repeat the steps S200 to S400 above until the stamping and riveting processing of the product A on the entire strip is completed.

[0062] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An in-mold riveting system, characterized in that: include: An upper die, wherein a riveting joint is arranged in the upper die; A lower die, wherein a riveting station is arranged in the lower die; A feeding guide rail, which is mounted on the lower die and cooperates with the riveting station; as well as A feeding mechanism, wherein a feeding end of the feeding mechanism is detachably connected to the feeding guide rail via a buckle structure; When riveting, the feeding mechanism is suitable for conveying the rivet stud to the riveting station through the feeding guide rail; then the upper die and the lower die are closed, and then the riveting head is suitable for riveting the rivet stud with the product.

2. The in-mold riveting system according to claim 1, characterized in that: The feeding guide rail comprises a fixed guide rail and a movable guide rail, wherein the fixed guide rail is fixedly connected to the lower die and connected to the feeding end, and the movable guide rail is vertically slidably installed on the lower die and connected to the lower die through an adjustment component, and the two ends of the movable guide rail are respectively docked with the fixed guide rail and the riveting station; When riveting is being performed, the movable guide rail is suitable for moving vertically downward with the cooperation of the adjustment component, thereby providing an escape space for the riveting of the product, and at this time the movable guide rail is disengaged from the riveting station.

3. The in-mold riveting system according to claim 2, characterized in that: The adjustment component includes an elastic member, both ends of which are respectively connected to the movable guide rail and the lower mold; when the upper mold and the lower mold are closed, the movable guide rail is suitable for moving downward under the extrusion of the upper mold; when the upper mold and the lower mold are opened, the movable guide rail is suitable for returning to the original position and moving upward under the action of elastic force.

4. The in-mold riveting system according to claim 2, characterized in that: The adjustment assembly includes a telescopic device, which is installed on the lower mold and the piston end is connected to the movable guide rail; the telescopic device is suitable for driving the movable guide rail to move up and down under the action of the control system, thereby adapting to the riveting of the product.

5. The in-mold riveting system according to any one of claims 2 to 4, characterized in that: A positioning rod is installed in the upper die; when riveting, the positioning rod is suitable for moving downward under the drive of the upper die, so that the positioning rod is plugged into and matched with the rivet column in the fixed guide rail close to the movable guide rail, thereby stopping the transportation of the rivet column.

6. The in-mold riveting system according to any one of claims 2 to 4, characterized in that: A baffle is installed on the side of the movable guide rail close to the fixed guide rail, and a guide groove cooperating with the fixed guide rail is provided on the baffle; when riveting, the baffle is suitable for moving downward under the drive of the movable guide rail to make the guide groove misaligned with the fixed guide rail, thereby stopping the transportation of the rivet column.

7. The in-mold riveting system according to claim 2, characterized in that: The feeding mechanism includes a vibration plate, a material guide hose and a material guide joint. The two ends of the material guide hose are respectively connected to the vibration plate and the material guide joint. The material guide joint forms the unloading end of the feeding mechanism. The conveying direction of the rivet column by the feeding guide rail is perpendicular to the conveying direction of the product.

8. The in-mold riveting system according to claim 7, characterized in that: A card slot is provided at the bottom end of the material guide joint, and the buckle structure includes a card column, and the card column is elastically and vertically slidably installed at the front end of the inner part of the feeding guide rail; during installation, the material guide joint is suitable for inserting into the feeding guide rail until the card column cooperates with the card slot under the action of elastic force, thereby realizing the locking installation of the material guide joint.

9. The in-mold riveting system according to claim 8, characterized in that: A slot body is provided on the outside of the clamping column, and the buckle structure also includes an operating rod, which is rotatably installed in the feeding guide rail and the first end of which cooperates with the slot body; when disassembling, the second end of the operating rod is driven to rotate, so that the first end of the operating rod rotates and squeezes the clamping column to move downward and away from the clamping slot, thereby unlocking the material guide joint.

10. An in-mold riveting working method, using the in-mold riveting system according to any one of claims 5 to 9, characterized in that: The steps include: S100: The rivet stud is transported to the riveting station in the lower die through the feeding guide rail by the feeding mechanism; S200: When the upper mold and the lower mold are closed, the movable guide rail in the feeding guide rail moves downward synchronously, thereby providing an escape space for the riveting of the product; and at this time, the rivet stud in the feeding guide rail stops conveying under the action of the positioning rod; S300: After the upper die and the lower die are closed, the riveting head in the upper die rivets the rivet column with the product, thereby completing the riveting of the product on the strip; S400: The upper die and the lower die are opened, at which time the movable guide rail is reset, and the rivet studs in the feeding guide rail continue to be transported to the riveting station; then the material strip advances one pitch; S500: Repeat steps S200 to S400 until the stamping and riveting of the products on the entire strip are completed.

Images