Edge covering die changing system

Abstract

The utility model provides an edge covering die changing system and a die changing method, relates to the field of edge covering die changing, and adopts the scheme that the edge covering die changing system comprises at least two die libraries and further comprises a die changing trolley, the die changing trolley is arranged on one side of an edge covering machine and can move in the arrangement direction of the die libraries, a first die changing hook assembly is arranged on the die changing trolley, and a second die changing hook assembly is arranged on the die changing trolley. A first die changing hook assembly is arranged on the die library and connected with a first driving assembly, the first die changing hook assembly can move in the direction close to and away from the covering machine, second die changing hook assemblies are arranged on the die library and connected with a second driving assembly, and the second die changing hook assemblies can move in the direction close to and away from the die changing trolley. The die changing trolley, the first die changing hook assembly, the first driving assembly, the second die changing hook assembly and the second driving assembly are all electrically connected with the controller. The die changing device can replace manual die changing, and the die changing efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the field of edge wrapping die changing, in particular to an edge wrapping die changing system. Background Art

[0002] In automobile production, hemming is the final forming process of four doors and two covers. It means that the body sheet is folded and then wrapped around another sheet, that is, the inner and outer panels are combined together through the edge process. It must also be able to form a certain shape during the door hemming process to achieve the overall industrial and artistic effects of automobile production, ensure the good quality of the door hemming, prevent the door from loosening or loose hemming, which will affect the overall use and the overall production quality of the car. The forming quality directly determines the assembly accuracy and appearance quality of the four doors and two covers.

[0003] In the traditional automobile industry production process, the door hemming process is often done manually. This hemming method consumes a lot of manpower and increases the overall manufacturing time of the car, affecting the overall benefits of the automobile manufacturing company. Later, with the continuous development of automobile production technology and the introduction of advanced foreign automobile production experience, my country began to use the punch press die-pressing single-piece pressing and hemming process in the process of automobile door hemming, and arranged an automatic hemming production line in the welding workshop, mainly for the welding and hemming of the inner and outer panels of the four doors and two covers of the car, which greatly improved the overall efficiency and quality of automobile hemming and shortened the overall manufacturing time of the car.

[0004] The molds used in the hemming process need to be replaced according to the different types of workpieces. In the existing technology, due to the constraints of the overall layout of the welding workshop that cannot accommodate cranes and other factors, the mold can only be changed by using a mobile workbench plus manual mold lifting. The mold changing efficiency is low, and there are certain requirements on the level of the operator, and there is also a certain risk. Utility Model Content

[0005] In order to overcome the problem of low mold changing efficiency and certain risks in the hemming process in the above-mentioned prior art, the utility model provides an hemming mold changing system, which can replace manual mold changing and improve mold changing efficiency and safety.

[0006] In order to solve the above technical problems, the utility model provides a die-changing system for edge wrapping, including a die library, at least two of which, and a die-changing trolley, which is arranged at one side of the edge wrapping machine, and can move along the direction in which the die library is arranged, and a die-changing hook component 1 is arranged on the die-changing trolley, and the die-changing hook component 1 is connected to a driving component 1, and the die-changing hook component 1 can move in the direction close to and away from the edge wrapping machine, and each of the die libraries is provided with a die-changing hook component 2, and the die-changing hook component 2 is connected to a driving component 2, and the die-changing hook component 2 can move in the direction close to and away from the die-changing trolley, and also includes a controller, and the die-changing trolley, the die-changing hook component 1, the driving component 1, the die-changing hook component 2 and the driving component 2 are all electrically connected to the controller. Through the cooperation of the die-changing trolley, the die-changing hook component 1, the die-changing hook component 2 and the die library, the mold can be automatically put on and put off the machine instead of manual labor, thereby improving the efficiency of mold change and avoiding the risk of mold change.

[0007] Furthermore, the mold changing trolley is also provided with a support rail 1, the length direction of which is parallel to the moving direction of the mold changing hook assembly 1, and a roller is provided on the support rail 1. The mold library is also provided with a support rail 2, the structure of which is the same as that of the support rail 1, and the length direction of which is parallel to the moving direction of the mold changing hook assembly 2. The mold changing trolley is also symmetrically provided with guide wheels, which are located on both sides of the mold. The support rail 1 and the guide wheels can guide the movement of the mold and reduce resistance.

[0008] Furthermore, the mold changing hook assembly 1 and the mold changing hook assembly 2 have the same structure and both include a hook body, the hook body is hinged on the base, the hook body can swing up and down, the hook body can be connected to the mold, and the base is connected to the drive assembly 1 or the drive assembly 2.

[0009] Furthermore, the groove of the hook body is a rectangular groove, and a guide slope is provided at the front of the hook body. The end of the guide slope away from the base is inclined upward, and the guide slope can be attached to the outer side of the hanging module on the mold. The hook body is connected to a decoupling cylinder, and the decoupling cylinder can drive the hook body to swing upward, and the decoupling cylinder is electrically connected to the controller. The cooperation of the guide slope and the hanging module realizes pure mechanical hooking, which has a simple structure, low failure rate, and high reliability. The decoupling cylinder can realize automatic decoupling, thereby improving efficiency.

[0010] Furthermore, the mold library is symmetrically arranged on both sides of the mold changing trolley, and the mold changing trolley is provided with a support rail three, the length direction of the support rail three is perpendicular to the length direction of the support rail one, the support rail one can be raised and lowered, and the support rail one is lowered below the support rail three, the length direction of the support rail three is parallel to the length direction of the support rail two, and the guide wheel can be raised and lowered. By symmetrically arranging the mold library and arranging two kinds of vertical support rails on the mold changing trolley, compared with arranging one row, the space occupied by the system can be reduced, and at the same time, the moving distance of the mold changing trolley can be reduced, which is conducive to improving the efficiency of mold changing.

[0011] Furthermore, the mold changing trolley and the mold library are both provided with mold identification components, and the mold identification components are both connected to the controller. The mold identification components can judge and verify whether the mold matches the corresponding mold library, so as to realize the double insurance of correctly storing the mold, and avoid errors when storing the mold off the machine, which may cause the hemming machine to fail to work normally.

[0012] Furthermore, the mold changing trolley and the mold library are both provided with a mold changing hook sensor 2, and the mold changing hook sensor 1 can detect the position of the hook body, and the mold changing hook sensor 1 is electrically connected to the controller. By judging whether the hook body has moved to the set position through the travel switch, on the one hand, it can be judged whether there is a mold in the film changing trolley and the mold library to avoid collision accidents caused by misoperation, and on the other hand, it can also enable the controller to control the next action, realize full automation, and further improve the efficiency of mold changing.

[0013] Furthermore, the mold changing trolley moves on the ground rail and also includes a positioning component, the positioning component includes a position judge and a locking cylinder, the locking cylinder is arranged on the mold changing trolley, the locking cylinder can be locked on the ground rail, the position judge and the locking cylinder are both electrically connected to the controller, and the position judge can judge whether the support rail three is aligned with the support rail two. The positioning component ensures that the support rail three on the mold changing trolley is aligned with the support rail two, and the mold changing trolley is locked to ensure smooth transportation of the mold.

[0014] Furthermore, the mold library is arranged in a straight line, the mold changing trolley is located between the hemming machine and the mold library, and the moving direction of the mold changing trolley is parallel to the arrangement direction of the mold library.

[0015] It can be seen from the above technical solutions that the utility model has the following advantages:

[0016] The utility model provides a hemming die changing system, which can automatically carry out the dismounting and loading of the die on the machine instead of manual work through the cooperation of the die changing trolley, the die changing hook assembly 1 and the die changing hook assembly 2, thereby improving the die changing efficiency and avoiding the die changing risk; the support guide rail 1 and the guide wheel can guide the movement of the die and reduce the resistance; the cooperation of the guide slope and the hanging module realizes the pure mechanical hooking, which has a simple structure, low failure rate and high reliability; the unhooking cylinder can realize automatic unhooking, thereby improving the efficiency; by symmetrically arranging the die library and arranging two kinds of vertical support guide rails on the die changing trolley, the space occupied by the system can be reduced compared with arranging one row, and the space required for the system can be reduced. The moving distance of the mold changing trolley is conducive to improving the efficiency of mold changing; the mold identification component can determine and verify whether the mold matches the corresponding mold library, realizing the double insurance of correctly storing the mold and avoiding errors when the mold is stored off the machine, which causes the hemming machine to not work normally; the travel switch is used to determine whether the hook body has moved to the set position. On the one hand, it can determine whether the mold exists in the film changing trolley and the mold library to avoid collision accidents caused by misoperation. On the other hand, it can also enable the controller to control the next action to realize full automation and further improve the efficiency of mold changing; the positioning component is used to ensure that the support guide rail three on the mold changing trolley is aligned with the support guide rail two, and the mold changing trolley is locked to ensure smooth transportation of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation mode 1 of the present utility model.

[0019] Figure 2 It is a structural schematic diagram of the mold library in the first specific implementation mode of the utility model.

[0020] Figure 3 The structure of the mold changing trolley in the first embodiment of the utility model is schematically shown. Figure 1 .

[0021] Figure 4 The structure of the mold changing trolley in the first embodiment of the utility model is schematically shown. Figure 2 .

[0022] Figure 5 It is a schematic diagram of the assembly structure of the mold changing hook component 1 and the driving component 1 in the specific implementation mode 1 of the utility model.

[0023] Figure 6 It is a structural schematic diagram of the second specific implementation mode of the present utility model.

[0024] Figure 7 It is a structural schematic diagram of the mold changing trolley in the second specific implementation mode of the present utility model.

[0025] Figure 8 It is a schematic diagram of the assembly structure of the lifting cylinder and the guide wheel in the second specific implementation mode of the utility model.

[0026] In the figure, 1. mold library; 101. mold changing hook component 2; 102. mold changing hook sensor 2; 103. mold changing hook sensor 1; 104. support rail 2; 107. drive component 2; 5. mold changing trolley; 501. mold changing hook component 1; 5011. hook body; 5012. base; 502. trolley opening sensor; 504. lifting cylinder; 506. unhooking cylinder; 507. support rail 1; 509. locking cylinder; 510. driving sprocket; 511. driving component 1; 512. mounting channel steel; 514. roller chain; 516. guide wheel; 518. support rail 3; 6. transition frame; 601. hook body opening sensor; 7. hemming machine; 8. proximity switch group; 9. ground rail. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0028] The inventors found that in the existing die-changing process for hemming, the overall layout of the welding workshop is restricted by factors such as the inability to accommodate a crane, and the only way to change the mold is to use a mobile workbench plus manual mold lifting. The mold changing efficiency is low, and there are certain requirements on the level of the operators, and there are also certain risks. Based on this, in one embodiment of the utility model provided by the utility model, an hemming die-changing system is used to realize automatic die changing instead of manual labor, thereby solving the problem of low mold changing efficiency and certain risks in the hemming process in the prior art. Specific implementation method 1

[0030] like Figure 1 to Figure 2As shown, this specific embodiment provides a hemming die changing system, including a die library 1, a controller and a die changing trolley 5. There are at least two die libraries 1. In this specific embodiment, four die libraries are arranged in a straight line on one side of the hemming machine 7. The die changing trolley 5 is arranged between the hemming machine 7 and the row of die libraries 1. The die changing trolley 5 can move along the direction in which the die libraries 1 are arranged. The die changing trolley 5 can move along the ground rail 9 arranged on the ground. The laying direction of the ground rail 9 is consistent with the arrangement direction of the die libraries 1. The die changing trolley 5 is provided with a die changing hook Component 1 501, die-changing hook component 1 501 is connected to driving component 1 511, die-changing hook component 1 501 can move in the direction close to and away from the hemming machine 7, and die-changing hook component 2 101 is provided on the die library 1, and die-changing hook component 2 101 is connected to driving component 2 107, and die-changing hook component 2 101 can move in the direction close to and away from the die-changing trolley 5, and the die-changing trolley 5, die-changing hook component 1 501, driving component 1 511, die-changing hook component 2 101 and driving component 2 107 are all electrically connected to the controller. Through the cooperation of the die-changing trolley 5, the die-changing hook component 1 501, the die-changing hook component 2 101 and the die library 1, it is possible to replace manual labor and automatically carry out the unloading and loading of the mold, thereby improving the efficiency of mold changing and avoiding the risk of mold changing.

[0031] like Figures 1 to 4 As shown, in order to facilitate the movement of the mold on the mold changing trolley 5, a support rail 1 507 is also provided on the mold changing trolley 5. The length direction of the support rail 1 507 is parallel to the moving direction of the mold changing hook assembly 1 501. The support rail 1 507 is provided with rollers. In this specific embodiment, two support rails 1 507 are provided and are parallel to the two sides of the mold changing hook assembly 1 501. The mold library 1 is also provided with a support rail 2 104. The structure of the support rail 2 104 is the same as that of the support rail 1 507. The length direction of the support rail 2 104 is parallel to the moving direction of the mold changing hook assembly 101. The moving direction is parallel. In this specific embodiment, two support rails 104 are provided and are located in parallel on both sides of the mold-changing hook assembly 101. The support rails 1 507 and the support rails 104 are used to support the movement of the mold. The mold-changing trolley 5 is also symmetrically provided with guide wheels 516, which are located on both sides of the mold. In this specific embodiment, four guide wheels 516 are provided and symmetrically arranged on both sides of the mold-changing trolley 5. When the mold moves, the guide wheels 516 can contact and rotate with the side of the mold. The length direction of the support rails 1 507 is parallel to that of the support rails 104. The support rails 1 507 and the guide wheels 516 can guide the movement of the mold and reduce resistance, thereby ensuring smooth transportation of the mold.

[0032] like Figure 4 and Figure 5As shown, in order to realize the automatic hooking and unhooking of the mold changing hook component 1 501 and the mold changing hook component 2 101, the mold changing hook component 1 501 has the same structure as the mold changing hook component 2 101, and both include a hook body 5011, the hook body 5011 is hinged on the base 5012, the hook body 5011 can swing up and down, the hook body 5011 can be connected to the mold, and the base 5012 is connected to the corresponding drive component 1 511 or the drive component 2 107. In this specific embodiment, the drive component 1 511 and the drive component 2 107 both include a motor and a reducer, the motor and the controller are electrically connected, the reducer is connected to the drive sprocket 510 through a chain drive, and the drive sprocket 510 is coaxially arranged There is a transmission sprocket, and a roller chain 514 is arranged on the transmission sprocket. The roller chain 514 is connected to the base 5012. In this specific embodiment, the roller chain 514 is arranged in the cavity of the mounting channel steel 512. The mounting channel steel 512 adopts C-shaped steel. The mounting channel steel 512 is arranged on the mold changing trolley 5. The rollers on both sides of the roller chain 514 are located on both sides of the mounting channel steel 512. The upper groove wall of the mounting channel steel 512 can prevent the roller chain 514 from arching, thereby ensuring the thrust of the roller chain 514 on the mold. The hook body 5011 is driven by the forward and reverse rotation of the motor to realize the pulling and pushing of the mold. The driving component 1 511 and the driving component 2 107 can also use electric The hook body 5011 is driven by a driving screw; the groove of the hook body 5011 is a rectangular groove, and a guide slope is provided at the front of the hook body 5011. The end of the guide slope away from the base 5012 is inclined upward, and the guide slope can be attached to the outer side of the hanging module on the mold. The hook body 5011 is connected to a decoupling cylinder 506, and the decoupling cylinder 506 can drive the hook body 5011 to swing upward. The decoupling cylinder 506 is electrically connected to the controller. In this specific embodiment, a transmission plate is provided on the upper part of the hook body 5011, and one end of the transmission plate is hinged to the piston rod of the decoupling cylinder 506. The decoupling cylinder 506 is connected to the base 5012, and the cooperation of the guide slope and the hanging module realizes a pure machine The hook is mechanically hooked, with a simple structure, low failure rate and high reliability. Automatic unhooking can be achieved through the unhooking cylinder 506, which improves efficiency. When the hook is needed to pull the mold, under the action of the corresponding driving component, the corresponding mold changing hook component moves toward the mold. When the guiding slope of the hook body 5011 hits the hanging module on the mold, the hook body 5011 is lifted up. As the mold changing hook assembly continues to move, until the groove of the hook body 5011 begins to meet the hanging module, the hook body 5011 loses support and falls under the action of gravity to hang on the hanging module to achieve hooking. When unhooking is required, the unhooking cylinder 506 rises, driving the hook body 5011 to swing upward to disengage from the hanging module to achieve unhooking.

[0033] like Figure 1 , Figure 2 and Figure 4As shown, in order to be able to judge the mold library 1 corresponding to the mold to be unloaded from the machine, the mold changing trolley 5 and the mold library 1 are provided with a mold recognition component, and the mold recognition component is connected to the controller; the mold recognition component can determine which mold library 1 the mold belongs to, so as to avoid errors when the mold is stored after being unloaded from the machine, resulting in the hemming machine 7 not being able to work normally; in this specific embodiment, the mold recognition component is a proximity switch group 8 and a trigger proton, and the number of proximity switches in the proximity switch group 8 is 4, and the trigger protons are respectively provided on the molds 1-4, wherein the proximity switches are provided on the mold changing trolley 5 and the mold library 1, and the trigger protons are provided on the molds, and the trigger protons on different molds are arranged on the molds. The number of settings is different, so that when the mold to be unloaded is pulled back and close to the signal receiving device, the signal receiving device can receive different numbers of signals. The controller determines which mold library 1 the mold to be unloaded belongs to, and controls the mold changing trolley 5 to move to the corresponding mold library 1 for storage. The mold identification component can also use radio frequency identification technology to obtain mold information by identifying the electronic tag on the mold through a reader; in this specific embodiment, a corresponding signal receiving device is also provided on the mold library 1, which can further receive the signal sent by the proximity switch on the mold, so that the controller can further verify whether the mold corresponds to the mold library 1, thereby realizing double insurance to avoid mold storage errors.

[0034] like Figure 2 and Figure 5 As shown, in order to further improve the automation level of the system, a mold changing hook sensor 103 is provided on the mold changing trolley 5 and the mold library 1. The mold changing hook sensor 103 can detect the position of the hook body 5011 of the corresponding mold changing component. The mold changing hook sensor 103 is electrically connected to the controller. In this specific embodiment, the mold changing hook sensor 103 uses a contact travel switch. The contact travel switches are all located in the stop position after the hook body 5011 pulls the mold. The corresponding mold changing hook component is provided with a trigger block. The travel switch is used to determine whether the hook body 5011 moves to the set position. On the one hand, it can determine whether there is a mold in the film changing trolley and the mold library 1 to avoid collision accidents caused by misoperation. On the other hand, it can also enable the controller to control the next action after the mold is pulled back, thereby realizing full automation and further improving the mold changing efficiency.

[0035] In order to ensure that the mold changing trolley 5 moves to the corresponding mold library 1, the support guide rail 1 507 of the trolley is aligned with the support guide rail 2 104 on the mold library 1 to ensure smooth transportation of the mold, the positioning component includes a position judge and a locking cylinder 509, the locking cylinder 509 is arranged on the mold changing trolley 5, the locking cylinder 509 can be locked on the ground rail 9, the position judge and the locking cylinder 509 are both electrically connected to the controller, and the position judge can judge whether the support guide rail 3 518 is aligned with the support guide rail 2 104; in this specific embodiment, a proton is arranged on the ground corresponding to each mold library 1, and a proximity switch is arranged at the corresponding position of the mold changing trolley 5. When the mold changing trolley 5 moves to the corresponding position, the proton triggers the proximity switch to send a signal, the controller determines that the movement is in place, and controls the locking cylinder 509 to lock the ground rail 9 to prevent the trolley from moving, thereby ensuring smooth transportation of the mold between the mold changing trolley 5 and the corresponding mold library 1.

[0036] like Figure 1 As shown, in this specific embodiment, the mold-changing trolley 5 adopts an AGV transport vehicle, which can accurately know the moving path under the control, and has high moving accuracy and intelligence level; a transition frame 6 is also provided between the mold-changing trolley 5 and the edge-binding machine 7, and a transition support guide rail is provided on the transition frame 6. The length direction of the transition support guide rail is the same as the length direction of the support guide rail 507, which can evenly support the entire bottom surface of the mold during the movement of the mold, thereby improving the safety of the system; a trolley entry sensor is provided on the transition frame 6 to prevent the mold-changing trolley 5 from passing or failing to drive into place when moving toward the edge-binding machine 7, and a hook entry sensor 601 is also provided on the transition frame 6 to detect the mold-changing hook assembly 501 The position of the hook body 5011 ensures that the mold is pushed into place. Both displacement sensors can use contact proximity sensors. A mold changing hook sensor 102 is also provided at the opening of the mold library 1. The mold changing hook sensor 102 can detect the position of the hook body 5011 of the mold changing hook component 101 to prevent the mold changing hook component 101 from being opened or not being in place, thereby ensuring that the mold is moved into place. A contact proximity sensor can be used. A trolley opening sensor 502 is also provided on the mold changing trolley 5 to prevent the mold changing trolley 5 from being opened when moving away from the hemming machine 7 and causing a collision. The trolley opening sensor 502 uses a contact proximity sensor and can be triggered by a trigger rod set on the ground, thereby locking the trolley with the locking cylinder 509 to avoid derailment and collision.

[0037] The working process of the hemming die changing system is as follows:

[0038] When the mold needs to be changed, the mold changing trolley 5 pulls out the mold to be removed from the hemming machine 7, and then moves horizontally along the arrangement direction of the mold library 1 to the corresponding position of the mold library 1. The mold to be removed is moved to the mold library 1 under the action of the mold changing hook component 2 101, and then, the mold changing trolley 5 moves to another mold library 1 under the action of the controller, and the mold to be loaded is transported to the mold changing trolley 5 through the corresponding mold changing hook component 2 101. After the mold changing trolley 5 moves to the position corresponding to the hemming machine 7, it is transported to the hemming machine 7 under the action of the mold changing hook component 1 501.

[0039] The locking cylinder 509 is a prior art, and its structure is not described in detail. Specific implementation method 2

[0041] like Figure 6 and Figure 7 As shown, the structure of this specific embodiment is basically the same as that of specific embodiment one, except that: the mold library 1 is symmetrically arranged on both sides of the mold changing trolley 5. In this specific embodiment, the mold library 1 is arranged in a 2*2 manner, and the mold changing trolley 5 can move between two rows of mold libraries 1. The mold changing trolley 5 is provided with a support guide rail three 518, and the support guide rail three 518 is also provided with rollers. The length direction of the support guide rail three 518 is perpendicular to the length direction of the support guide rail one 507, and the support guide rail one 507 can be raised and lowered. After the support guide rail one 507 is lowered, it is lower than the support guide rail three 518. When the support guide rail one 507 is lowered, the mold just falls on the support guide rail three 518. The length direction of the support guide rail three 518 is parallel to the length direction of the support guide rail two 104, and the guide wheel 516 can also be raised and lowered. Through such an arrangement, the space on both sides of the mold changing trolley 5 is utilized, which reduces the space occupancy of the system. At the same time, during the mold changing process, the moving distance of the mold changing trolley 5 is effectively reduced, thereby improving the mold changing efficiency.

[0042] like Figure 7 and Figure 8 As shown, in this specific embodiment, in order to realize modular design, the support guide rail 507 uses a mold lifter, and the mold lifter is electrically connected to the controller; a lifting cylinder 504 is arranged at the lower part of the guide wheel 516, and the lifting cylinder 504 is installed on the mold changing trolley 5, and a corresponding groove is arranged on the mold changing trolley 5 to enable the guide wheel 516 to be located in the groove after being lowered to avoid interference during the horizontal transportation of the mold. In this specific embodiment, rollers are arranged on all sides of the mold changing trolley 5, among which the rollers close to the hook body 5011 to pull back the mold position do not need to be provided with a lifting cylinder 504.

[0043] The mold lifter is a prior art, and its specific structure will not be described in detail.

[0044] The mold changing method according to this specific embodiment comprises the following steps:

[0045] S01: The mold changing hook assembly moves away from the mold changing trolley and hangs on the mold to be unloaded;

[0046] S02: The die-changing hook assembly moves in a direction away from the hemming machine;

[0047] S03: The mold changing trolley moves to the mold library corresponding to the mold to be unloaded;

[0048] S04: Once the mold changing hook assembly is unhooked, the support rail descends, and the guide wheel descends;

[0049] S05: The second mold-changing hook assembly moves toward the mold-changing trolley and hangs on the mold to be unloaded;

[0050] S06: The second die-changing hook assembly moves away from the die-changing trolley;

[0051] S07: After the mold changing hook assembly 2 is moved into position, the mold changing trolley moves to the mold library where the mold to be loaded is placed;

[0052] S08: The mold changing hook assembly 2 of the mold library of the mold to be loaded on the machine moves toward the direction close to the mold changing trolley, and unhooks after reaching the position;

[0053] S09: The die-changing hook assembly is hung on the die to be loaded on the machine, and the die-changing trolley moves toward the hemming machine;

[0054] S10: After the die-changing trolley moves into position, the die-changing hook assembly pushes the die to be loaded to move toward the hemming machine, and the guide wheel rises at the same time;

[0055] S011: Once the mold-changing hook assembly moves into position, it is unhooked and the hemming machine moves the mold to be loaded into the machine body.

[0056] In S01, when the mold needs to be changed, the mold changing trolley is first determined to be empty, that is, the mold changing hook component 1 is determined to be not in the set position through the travel switch on the mold changing trolley. When it is determined that the mold changing trolley is empty, the mold changing hook component 1 is driven to move toward the hemming machine for hooking; in S03, when the mold changing hook component 1 collides with the travel switch, the mold changing hook component 1 stops moving, and the mold changing trolley starts to move toward the mold library corresponding to the mold to be unloaded. When the positioning component locks the mold changing trolley, the mold changing trolley stops moving; in S04, the height of the support guide rail 1 descends by 1-2cm. In S06, the mold recognition component in the corresponding mold library recognizes whether the mold is the corresponding mold; in S08, the displacement sensor on the mold library is used to determine whether the mold has moved into place.

[0057] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0058] Through the cooperation of the mold changing trolley 5, the mold changing hook assembly 1 501, the mold changing hook assembly 2 101, and the mold library 1, it is possible to automatically load and unload the mold instead of manual labor, thereby improving the mold changing efficiency and avoiding the risk of mold changing; the support guide rail 1 507 and the guide wheel 516 can guide the movement of the mold and reduce the resistance; the cooperation of the guide slope and the hanging module realizes pure mechanical hooking, which has a simple structure, low failure rate, and high reliability. The unhooking cylinder can realize automatic unhooking, thereby improving efficiency; by symmetrically arranging the mold library 1 and arranging two kinds of vertical support guide rails on the mold changing trolley 5, compared with arranging one row, the space occupied by the system can be reduced, and the number of mold changing trolleys can be reduced. The moving distance of the work is conducive to improving the efficiency of mold change; the mold identification component can judge and verify whether the mold matches the corresponding mold library, realize the double insurance of correctly storing the mold, avoid errors in the storage of the mold when the machine is unloaded, and cause the hemming machine 7 to fail to work normally; the travel switch can be used to judge whether the hook body has moved to the set position. On the one hand, it can judge whether there is a mold in the film changing trolley and the mold library 1 to avoid collision accidents caused by misoperation. On the other hand, it can also enable the controller to control the next action to achieve full automation and further improve the efficiency of mold change; the positioning component ensures that the support guide rail 3 518 on the mold changing trolley 5 is aligned with the support guide rail 2 104, and locks the mold changing trolley to ensure smooth transportation of the mold. The terms "upper", "lower", "outer side", "inner side", etc. (if any) in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position without giving qualitative description. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hemming die changing system, comprising a die library (1), the die library (1) having at least two, characterized in that: The invention also comprises a die-changing trolley (5), the die-changing trolley (5) being arranged at one side of the hemming machine, the die-changing trolley (5) being capable of moving in the direction in which the die library (1) is arranged, the die-changing trolley (5) being provided with a die-changing hook assembly (1) (501), the die-changing hook assembly (1) being connected to a drive assembly (1) (511), the die-changing hook assembly (1) being capable of moving in the direction approaching and away from the hemming machine, each die library (1) being provided with a die-changing hook assembly (2) (101), the die-changing hook assembly (2) (101) being connected to a drive assembly (2) (107), the die-changing hook assembly (2) (101) being capable of moving in the direction approaching and away from the die-changing trolley (5), and a controller being further included, the die-changing trolley (5), the die-changing hook assembly (1) (501), the drive assembly (1) (511), the die-changing hook assembly (2) (101) and the drive assembly (2) (107) being electrically connected to the controller.

2. The hemming die changing system according to claim 1, characterized in that: The mold changing trolley (5) is also provided with a first support rail (507), the length direction of which is parallel to the moving direction of the first mold changing hook assembly (501), and a roller is provided on the first support rail (507). The mold storage (1) is also provided with a second support rail (104), the structure of the second support rail (104) is the same as that of the first support rail (507), the length direction of which is parallel to the moving direction of the second mold changing hook assembly (101), and the mold changing trolley (5) is also symmetrically provided with guide wheels (516), which are located on both sides of the mold.

3. The hemming die changing system according to claim 2, characterized in that: The structure of the mold changing hook assembly 1 (501) and the mold changing hook assembly 2 (101) is the same, and both include a hook body (5011). The hook body (5011) is hinged on the base (5012). The hook body (5011) can swing up and down. The hook body (5011) can be connected to the mold. The base (5012) is connected to the driving assembly 1 (511) or the driving assembly 2 (107).

4. The hemming die changing system according to claim 3, characterized in that: The groove of the hook body (5011) is a rectangular groove. A guiding inclined surface is arranged at the front of the hook body (5011). The end of the guiding inclined surface away from the base (5012) is inclined upward. The guiding inclined surface can be in contact with the outer side surface of the hanging module on the mold. The hook body (5011) is connected to a decoupling cylinder (506). The decoupling cylinder (506) can drive the hook body (5011) to swing upward. The decoupling cylinder (506) is electrically connected to a controller.

5. The hemming die changing system according to claim 3, characterized in that: The mold library (1) is symmetrically arranged on both sides of the mold changing trolley (5). The mold changing trolley (5) is provided with a support guide rail three (518). The length direction of the support guide rail three (518) is perpendicular to the length direction of the support guide rail one (507). The support guide rail one (507) can be raised and lowered. After the support guide rail one (507) is lowered, it is lower than the support guide rail three (518). The length direction of the support guide rail three (518) is parallel to the length direction of the support guide rail two (104). The guide wheel (516) can be raised and lowered.

6. The hemming die changing system according to claim 5, characterized in that: The mold changing trolley (5) and the mold library (1) are both provided with mold identification components, and the mold identification components are both connected to the controller.

7. The hemming die changing system according to claim 6, characterized in that: A mold changing hook sensor 1 (103) is provided on both the mold changing trolley (5) and the mold library (1). The mold changing hook sensor 1 (103) is capable of detecting the position of the hook body (5011). The mold changing hook sensor 1 (103) is electrically connected to the controller.

8. The hemming die changing system according to claim 7, characterized in that: The mold changing trolley (5) moves on the ground rail (9) and also includes a positioning component, which includes a position judgement device and a locking cylinder (509). The locking cylinder (509) is arranged on the mold changing trolley (5). The locking cylinder (509) can be locked on the ground rail (9). The position judgement device and the locking cylinder (509) are both electrically connected to the controller. The position judgement device can judge whether the support guide rail three (518) is aligned with the support guide rail two (104).

9. The hemming die changing system according to claim 1, characterized in that: The mold library (1) is arranged in a straight line, the mold changing trolley (5) is located between the hemming machine and the mold library (1), and the moving direction of the mold changing trolley (5) is parallel to the arrangement direction of the mold library (1).

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