A locking mechanism and a bending die quick clamping system including the same

Abstract

The present invention discloses a locking mechanism and a bending mold quick clamping system including the same, a locking mechanism mounting base, one or more clamping actuators arranged longitudinally on one or both sides of the mounting base, a mold clamped between the clamping actuators and the mounting base, the clamping actuators approaching or moving away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely. The present invention can completely eliminate the situation where the mold cannot be completely clamped when there is a slight change in the clamping position due to mold processing errors or mold wear (which may cause safety hazards), and ensure that any section of the mold at any mounting position on the mounting base is clamped uniformly and the clamping force is not attenuated.

Description

Technical Field

[0001] The invention relates to the field of bending die clamping, and in particular to a locking mechanism and a bending die quick clamping system comprising the locking mechanism. Background Art

[0002] In the workpiece bending process, a bending upper die (referred to as the upper die in this application) and a bending lower die are usually required. The bending upper die has an upper die clamping part and an upper die cutter head. The bending lower die is V-shaped. The workpiece is placed between the bending upper die and the bending lower die. The upper die clamping part is clamped on the bending machine, and the upper die cutter head applies force to the surface of the workpiece to bend the workpiece.

[0003] According to the different relative positions of the upper die head and the center line of the upper die clamping part, the bending upper die can be classified into two types: symmetrical head type and asymmetrical head type. The clamping of the asymmetrical head bending upper die (commonly known as European or Armada type) is manual or pneumatic split quick clamps. There are several to dozens of split quick clamps installed on each bending machine (taking a bending machine with a 3-meter workbench as an example, each time the mold is changed, the operator needs to repeat the loosening and locking actions dozens or hundreds of times. Even a simple left and right movement of the bending lower die is time-consuming and laborious). There is usually a gap of dozens of millimeters between each two split quick clamps, and there is no way to install small segmented molds in these gaps, which is not conducive to the implementation and application of automatic mold changing technology.

[0004] For the bending upper die with symmetrical head (commonly known as TRUMPF / Vera type), although there are hydraulic or pneumatic integrated clamping, on the one hand, buttons or fixed safety pins must be installed on the neck of the die when the die leaves the factory. For long dies such as 500mm and above, due to their heavy weight, only fixed safety pins can be installed, so it must be inserted into the integrated clamping device from the side of the bending machine, and the processing of these buttons and safety pins makes the manufacturing process of the die complicated; on the other hand, pneumatic clamping is limited by compressed air pressure, and the clamping force exerted by the independent cylinder corresponding to each clamping tooth is far less than the clamping force of the usual hydraulic clamping.

[0005] In addition, in the prior art, when releasing the bending upper die, it is necessary to catch the bending upper die by hand or a tray, otherwise the bending upper die will fall directly, which is easy to damage the die, and the work efficiency when replacing the die is also low. Summary of the invention

[0006] In order to solve the technical problems that the clamping mechanism in the prior art cannot achieve independent control of the segmented mold, has high requirements on the casting accuracy of the segmented mold, or easily causes some segmented molds to be loosely clamped, the present invention provides a locking mechanism and a bending mold quick clamping system including the same to solve the above problems.

[0007] The present invention proposes a locking mechanism, comprising a mounting base, and one or more clamping actuators arranged longitudinally on one or both lateral sides of the mounting base, wherein the mold is clamped between the clamping actuators and the mounting base, and the clamping actuators approach or move away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely.

[0008] Furthermore, the top of the mounting base has a horizontal mounting surface in contact with the bending machine, and the bottom of the mounting base has a vertical reference surface and a horizontal reference surface for positioning the upper die; the reverse force on the upper die cutter head points to the horizontal reference surface. The clamping actuator has a second working surface that cooperates with the vertical reference surface to clamp the upper die clamping part and a third working surface that presses the upper die clamping part upward.

[0009] When the bending machine bends the workpiece, the upper die head squeezes the workpiece downward, and the workpiece has a vertical upward reverse force on the upper die head. A horizontal reference plane opposite to the reverse force is set on the mounting base. The force center of the mold on the horizontal reference plane has a supporting effect when working, which can effectively avoid torsional deformation of the upper mold.

[0010] Furthermore, the clamping actuator includes a locking tooth and an anti-fall lock hook, and the second working surface and the third working surface are located on the anti-fall lock hook; the locking tooth has a fourth working surface coupled with the anti-fall lock hook, and the fourth working surface has a certain inclination angle with the movement direction of the locking tooth, so that the anti-fall lock hook can simultaneously produce horizontal and vertical movements relative to the mounting base.

[0011] The locking tooth is coupled with the anti-falling lock hook, so that the anti-falling lock hook has a relative movement in the vertical direction relative to the mounting base. The coupling refers to the mutual cooperation and connection between the locking tooth and the anti-falling lock hook. When the clamping actuator is away from the lateral side of the mounting base, the anti-falling lock hook releases the upper mold clamping part in the vertical direction. At this time, the disassembly work can be completed with one hand by tilting the upper mold to press the second working surface of the anti-falling lock hook until the upper mold clamping part is separated from the third working surface.

[0012] Furthermore, a sliding hole is provided on the lateral side of the mounting base, and a protrusion suitable for inserting into the sliding hole is provided on the locking tooth, and the locking tooth approaches or moves away from the lateral side of the mounting base along the extending direction of the protrusion.

[0013] Furthermore, the protrusion is arranged to extend in the horizontal direction, and the angle between the fourth working surface and the extension direction of the protrusion is 30°~60°.

[0014] Furthermore, the clamping actuator also includes an elastic member located between the anti-falling lock hook and the locking tooth; the elastic member is suitable for squeezing the anti-falling lock hook and applying a force toward the vertical reference plane to the upper molded clamp part through the anti-falling lock hook.

[0015] Furthermore, a positioning column is extended in an oblique downward direction at the bottom of the locking tooth, the fourth working surface is the circumferential surface of the positioning column, one end of the anti-fall lock hook away from the upper mold clamping part is provided with a positioning groove coupled with the positioning column, and the elastic part is sleeved on the circumferential surface of the positioning column.

[0016] Preferably, the fourth working surface is an inclined surface, and the coupling surface of the anti-fall lock hook and the third working surface are respectively located on both sides of the anti-fall lock hook; the coupling surface of the anti-fall lock hook corresponds to the working surface on the anti-fall lock hook that is coupled with the fourth working surface; the telescopic direction of the elastic member is parallel to the extension direction of the protrusion.

[0017] Preferably, a U-shaped opening is provided at the top of the anti-fall lock hook, and vertically arranged long grooves are provided on the inner side walls on both sides of the U-shaped opening; a tooth hook connector is connected between the anti-fall lock hook and the locking tooth, and a short shaft suitable for inserting into the long groove and a top column suitable for sleeved with the elastic member are provided on the tooth hook connector, and a sliding groove is provided in the middle of the protrusion, and when the elastic member is extended or retracted, the tooth hook connector reciprocates in the sliding groove in a direction parallel to the extension and retraction direction of the elastic member, and the short shaft reciprocates vertically in the long groove.

[0018] Preferably, the upper portion of the anti-falling lock hook has an elongated hole, the elastic member is axially limited between the anti-falling lock hook and the locking tooth, and the protrusion passes through the elongated hole to couple with the sliding hole.

[0019] Preferably, the elastic member is sleeved on the circumferential outer side of the protrusion and is axially limited between the elongated hole and the locking tooth.

[0020] Preferably, a locking screw is fixed to the surface of the locking tooth opposite to the anti-fall lock hook, the elastic member is sleeved on the locking screw, and the elastic member respectively abuts against the surface of the anti-fall lock hook and the surface of the locking tooth.

[0021] Furthermore, the locking mechanism also includes a driving component suitable for driving the clamping actuator component to move closer to or away from the mounting base.

[0022] Preferably, the drive assembly is hydraulically driven or pneumatically driven.

[0023] Furthermore, the driving assembly includes a driving cylinder and a telescopic rod arranged obliquely to the central axis of the driving cylinder, the protruding end of the driving cylinder is connected to one end of the telescopic rod through a wedge surface, and the top of the locking tooth has a first working surface in contact with the other end of the telescopic rod. When the telescopic rod reciprocates, the telescopic rod pushes the locking tooth close to or away from the lateral side of the mounting base through the first working surface.

[0024] Furthermore, the driving assembly includes an eccentric shaft driving body and an eccentric shaft arranged in a vertical direction, the lower outer edge of the eccentric shaft is an eccentric working surface; the top of the locking tooth has a first working surface in contact with the eccentric working surface, the eccentric shaft driving body drives the eccentric shaft to rotate, and the eccentric shaft pushes the locking tooth close to or away from the lateral side of the mounting base through the first working surface.

[0025] Preferably, the farthest working end and the nearest working end of the eccentric working surface are connected by a planar transition surface.

[0026] Furthermore, the eccentric shaft driving body includes a driver and an eccentric shaft driving member, the driver is arranged on the upper part of the mounting base, and the driver drives the eccentric shaft driving member to reciprocate in the vertical direction; a spiral track is provided on the circumferential side of the eccentric shaft located above the eccentric working surface, and the eccentric shaft driving member has a through hole matching the upper part of the eccentric shaft, so that the eccentric shaft driving member moves along the spiral track relative to the eccentric shaft.

[0027] Furthermore, a driver mounting hole is provided at the upper portion of the mounting base, and a vertical movable groove is provided at the middle portion of the mounting base; one end of the eccentric shaft driving component is inserted into the vertical movable groove, the through hole is provided at the other end of the eccentric shaft driving component, and the middle portion of the eccentric shaft driving component is connected to the push rod of the driver.

[0028] Preferably, the driver is a hydraulic cylinder, a pneumatic cylinder, a pneumatic muscle, a hydraulic expansion tube or a pneumatic expansion tube.

[0029] Preferably, the end of the eccentric shaft driving member inserted into the vertical movable groove is dovetail-shaped.

[0030] The present invention also proposes a bending mold quick clamping system, comprising an upper mold and the locking mechanism described above, wherein an anti-falling groove is provided on one or both lateral sides of the upper mold clamping part of the upper mold, and the third working surface contacts the inner surface of the anti-falling groove.

[0031] The beneficial effects of the present invention are:

[0032] The present invention arranges one or more groups of clamping actuators on the mounting base, each segmented mold corresponds to one group of clamping actuators, and the adjacent clamping actuators are arranged closely, which can completely eliminate the situation where the mold cannot be completely clamped when the clamping position has a slight change due to mold processing errors or mold wear (which will cause safety hazards), and ensure that any segment of the mold at any mounting position on the mounting base is clamped uniformly and consistently, and the clamping force is not attenuated; and molds of different segments or different batches can be used interchangeably.

[0033] The adaptive design of the horizontal reference plane of the present invention can be applied not only to symmetrical head molds but also to asymmetrical head molds.

[0034] The clamping actuator in the present invention utilizes the coupling relationship between the locking teeth and the anti-falling lock hook to enable the anti-falling lock hook to simultaneously generate horizontal and vertical movements relative to the mounting base. When the clamping actuator is released, the upper mold clamping part has movable space in both the vertical and horizontal directions, which facilitates the disassembly of the upper mold.

[0035] The clamping actuator in the present invention is provided with an elastic member. Due to the elastic squeezing effect of the elastic member on the anti-falling lock hook, when the elastic member releases the elastic force, the pressing force of the anti-falling lock hook on the upper mold is reduced while still being squeezed on the surface of the upper mold. The mold will not fall off automatically due to gravity, thereby eliminating the safety problem of the mold falling.

[0036] The drive assembly in the present invention can be turned on or off with one button, realizing rapid loosening and clamping (one-button clamping) of the bending mold (upper and lower molds), avoiding the need for traditional manual quick clamping to repeat hundreds of operations, saving mold change time, improving operating efficiency, thereby reducing workers' labor intensity, improving equipment utilization, and laying the foundation for mold change automation.

[0037] All the molds in the present invention are on an integral mounting base, and if only the position of the mold needs to be moved and replaced, the position of the mold can be changed very conveniently and quickly.

[0038] The bending mold quick clamping system described in the present invention only needs to set an anti-falling groove on the mold, and does not need to install buttons or safety pins. Regardless of the length of the segmented mold, it can be directly loaded and unloaded from the front, thereby improving the mold changing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0040] Figure 1 It is an exploded schematic diagram of a specific implementation of the bending die quick clamping system of the present invention;

[0041] Figure 2 is a three-dimensional diagram of a drive assembly corresponding to Embodiment 3 of the locking mechanism of the present invention;

[0042] Figure 3 is a three-dimensional diagram of a drive assembly corresponding to the fourth embodiment of the locking mechanism of the present invention;

[0043] Figure 4 yes Figure 3 A schematic cross-sectional view of a drive assembly shown;

[0044] Figure 5 yes Figure 2 A schematic diagram of the structure of the eccentric shaft in the drive assembly shown;

[0045] Figure 6 1. It is a schematic diagram of the clamping actuator in Example 2a of the present invention when it is applied to an asymmetric mold and is in a clamping state (the driver is a hydraulic / pneumatic cylinder / pneumatic muscle);

[0046] Figure 7 is a schematic diagram of the state of the clamping actuator in Example 2a of the present invention when it is applied to an asymmetric mold and is in a loosened state;

[0047] Figure 8 yes Figure 6 The enlarged view of M;

[0048] Fig. 9 yes Figure 7 The enlarged view at N;

[0049] Fig.10 yes Figure 6 EE section view;

[0050] Fig.11 yes Figure 6 FF section view;

[0051] Fig.12 It is a schematic diagram of the clamping actuator in Example 2a of the present invention when applied to an asymmetric mold and is in a clamping state (the driver is a hydraulic or pneumatic expansion tube).

[0052] Fig.13 It is a schematic diagram of the structure of the mounting base of the present invention;

[0053] Fig.14 It is a schematic diagram of the structure of the mounting base described in the present invention;

[0054] Fig.15 is a third schematic diagram of the structure of the mounting base of the present invention;

[0055] Fig.16is an exploded schematic diagram of a clamping actuator assembly in embodiment 2a of the present invention;

[0056] Fig.17 yes Figure 6 The schematic diagram of the process of the locking mechanism loading and clamping the upper mold;

[0057] Fig.18 yes Figure 6 Schematic diagram of the process of releasing the locking mechanism and unloading the upper mold;

[0058] Fig.19 is an exploded schematic diagram of a clamping actuator in Example 2b of the present invention;

[0059] Fig. 20 is a schematic diagram of the state of the clamping actuator in embodiment 2b of the present invention when it is in a clamping state;

[0060] Fig.21 is a schematic diagram of the state of the clamping actuator in the embodiment 2b of the present invention when it is in a released state;

[0061] Fig. 22 is an exploded schematic diagram of a clamping actuator assembly in Example 2c of the present invention;

[0062] Fig.23 is a schematic diagram of the state of the clamping actuator in embodiment 2c of the present invention when it is in a clamping state;

[0063] Fig.24 is a schematic diagram of the state of the clamping actuator in the embodiment 2c of the present invention when it is in a released state;

[0064] Fig.25 is an exploded schematic diagram of a clamping actuator in Example 2e of the present invention;

[0065] Fig.26 is a schematic diagram of the state of the clamping actuator in the embodiment 2e of the present invention when it is in the clamping state;

[0066] Fig. 27 is a schematic diagram of the state of the clamping actuator in the embodiment 2e of the present invention when it is in a released state;

[0067] Fig.28 is an exploded schematic diagram of a clamping actuator in Example 2e of the present invention;

[0068] Fig.29 is a schematic diagram of the clamping actuator in Example 2a of the present invention when it is applied to a symmetrical mold and is in a clamping state;

[0069] Fig.30It is a schematic diagram of the state of the clamping actuator in Example 2a of the present invention when it is applied to a symmetrical mold and is in a loosened state.

[0070] In the figure, 1, upper mold, 101, upper mold clamping part, 102, upper mold cutter head, 103, anti-fall groove, 2, mounting base, 201, horizontal reference surface, 202, vertical reference surface, 203, horizontal mounting surface, 204, sliding hole, 205, driver mounting hole, 206, vertical movable groove, 3, driving assembly, 3011, driver, 3012, eccentric shaft, 30121, eccentric working surface, 30122, plane transition surface, 30123, spiral track, 3013, eccentric shaft driving member, 30131, through hole, 3021, driving cylinder, 3022, telescopic rod, 3023, wedge Surface, 4, elastic part, 5, anti-fall lock hook, 501, convex hook, 5011, second working surface, 502, third working surface, 503, positioning groove, 504, baffle, 505, U-shaped opening, 506, long groove, 507, tooth hook connector, 5071, short shaft, 5072, top column, 5073, through hole, 508, long hole, 6, locking tooth, 601, protrusion, 6011, fifth working surface, 6012, sliding groove, 602, first working surface, 603, positioning column, 604, fourth working surface, 605, protruding tooth portion, 606, top column hole, 7, arc top hook pad, 8, locking screw. DETAILED DESCRIPTION

[0071] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0072] Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0073] The terms "vertical", "horizontal" and "longitudinal" in the present invention are Figure 1 The direction shown is used as a reference, and the plane composed of the vertical direction and the horizontal direction is perpendicular to the longitudinal direction of the mounting base 2.

[0074] The present invention is described in detail below in conjunction with specific embodiments, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0075] Embodiment 1, a locking mechanism, such as Figure 1 , Figure 13-Figure 15 As shown, it includes a mounting base 2 and a clamping actuator assembly, wherein one or more groups of the clamping actuator assembly are arranged along the longitudinal direction on one lateral side or both sides of the mounting base 2, and the mold is clamped between the clamping actuator assembly and the mounting base 2, and the clamping actuator assembly approaches or moves away from the mounting base 2 along a plane perpendicular to the longitudinal direction; and adjacent clamping actuator assemblies are arranged closely.

[0076] The mounting base 2 is a fixed component, and the mounting base 2 is fixed on the bending machine. The movement direction of the clamping actuator is perpendicular to its arrangement direction. Therefore, when the clamping actuator clamps the mold, there will be no interference between the adjacent clamping actuators. In the present invention, the distance between adjacent clamping actuators can be within 2 mm (approximately arranged closely). Compared with the gap of tens of millimeters between adjacent clamping mechanisms in the prior art, the gap between adjacent clamping actuators in the present invention can be ignored, and any section of the mold at any installation position on the locking mechanism can be uniformly clamped without attenuation of the clamping force.

[0077] In addition, the integrated clamping mechanism in the prior art can only apply the same force to different segmented molds. At this time, the surface treatment condition of each segmented mold needs to be kept consistent, otherwise some segmented molds will not be able to be clamped. The present invention can apply clamping force to each segment of the mold separately, completely eliminating the situation where the mold cannot be completely clamped when the clamping position has slight changes due to mold processing errors or mold wear.

[0078] The top of the mounting base 2 has a horizontal mounting surface 203 in contact with the bending machine, and the bottom of the mounting base 2 has a vertical reference surface 202 and a horizontal reference surface 201 for positioning the upper mold 1; the reverse force on the upper mold cutter head 102 points to the horizontal reference surface 201. The clamping actuator has a second working surface 5011 that cooperates with the vertical reference surface 202 to clamp the upper mold clamping part 101 and a third working surface 502 that presses the upper mold clamping part 101 upward. The mounting base 2 serves as the supporting body of the upper mold 1 and the clamping actuator, and is fixedly mounted on the lower surface of the bending machine. The horizontal mounting surface 203 is the contact surface between the mounting base 2 and the bending machine. The vertical reference surface 202 is the lateral side of the mounting base 2. The longitudinal length of the mounting base 2 can be set according to the length requirement of the upper mold 1. Usually, one group (single-sided mounting base 2) or two groups (double-sided mounting base 2) of upper molds 1 are arranged on one mounting base 2. Each group of upper molds 1 is spliced ​​by multiple segmented molds arranged longitudinally, and each segmented mold corresponds to a clamping actuator.

[0079] The clamping actuator described in this embodiment adopts the following structure: it includes a locking tooth 6 and an anti-fall lock hook 5, and the second working surface 501 and the third working surface 502 are located on the anti-fall lock hook; the locking tooth 6 has a fourth working surface 604 coupled with the anti-fall lock hook 5, and the fourth working surface 604 has a certain inclination angle with the movement direction of the locking tooth 6, so that the anti-fall lock hook 5 can simultaneously produce horizontal and vertical movements relative to the mounting base 2.

[0080] The locking tooth 6 moves in a straight line, and its movement direction can be manually controlled (the movement direction is uncontrollable at this time and is generally not adopted), or the locking tooth 6 can move under the action of structural limiting. When the locking tooth 6 moves along the specified direction, the anti-falling lock hook 5 moves along the fourth working surface 604 relative to the locking tooth 6. Since the specified direction is not parallel to the fourth working surface 604, the anti-falling lock hook 5 needs to be displaced to ensure the successful movement of the locking tooth 6, thereby driving the displacement of the anti-falling lock hook 5 through the movement of the locking tooth 6. By reasonably controlling the angle between the fourth working surface 604 and the movement direction of the locking tooth 6, the anti-falling lock hook 5 can simultaneously generate horizontal and vertical movements relative to the mounting base 2.

[0081] In this embodiment, the movement direction of the locking teeth is limited by the following structure: Figure 6 , Figure 7 , Fig.12 , Fig. 20 , Fig.21 , Fig.23 , Fig.24 , Fig.26 , Fig. 27 As shown, a sliding hole 204 is provided on the lateral side of the mounting base 2, and a protrusion 601 suitable for inserting into the sliding hole 204 is provided on the locking tooth 6, and the locking tooth 6 approaches or moves away from the lateral side of the mounting base 2 along the extension direction of the protrusion 601. The protrusion 601 is coupled and contacted with the sliding hole 204, and the circumferential side of the protrusion 601 serves as the working surface (hereinafter referred to as the fifth working surface 6011) when the locking tooth 6 reciprocates laterally. Preferably, the protrusion 601 is arranged to extend in the horizontal direction, and the angle between the fourth working surface 604 and the extension direction of the protrusion 601 is 30°~60°, and at this time, the locking tooth 6 moves in the horizontal direction.

[0082] Embodiment 2, on the basis of embodiment 1, the clamping actuator further comprises an elastic member 4 located between the anti-falling lock hook 5 and the locking tooth 6; the elastic member 4 is suitable for squeezing the anti-falling lock hook 5, and applying a force toward the vertical reference plane 202 to the upper molded clamp 101 through the anti-falling lock hook 5, and the force can be a total force or a component force, that is, the elastic force direction of the elastic member 4 can be directly opposite to the vertical reference plane 202, or it can extend obliquely toward the vertical reference plane 202.

[0083] The third working surface 502 of the anti-falling lock hook 5 exerts a force on the upper mold 1 vertically upwards, and is used to hold up the upper mold 1. The third working surface 502 and the horizontal reference surface 201 jointly limit the displacement of the upper mold 1 in the vertical direction. The second working surface 5011 and the vertical reference surface 202 jointly limit the displacement of the upper mold 1 in the horizontal direction. The elastic member 4 refers to a component with telescopic and energy storage functions. When installing the upper mold 1, the elastic member 4 has a small squeezing force on the anti-falling lock hook 5. The upper mold 1 is placed between the third working surface 502 and the horizontal reference surface 201, and then the elastic member 4 is driven to contract, further squeezing the anti-falling lock hook 5, so that the upper mold 1 is clamped between the second working surface 5011 and the vertical reference surface 202.

[0084] The elastic member 4 always exerts a squeezing force on the anti-falling lock hook 5. When the clamping actuator is released, the anti-falling lock hook 5 can still squeeze the upper mold 1 between the vertical reference plane 202 and the second working plane 5011 to prevent the upper mold 1 from falling. At this time, the elastic member 4 releases the elastic force, that is, the squeezing force of the elastic member 4 on the anti-falling lock hook 5 is reduced. The upper mold 1 can be taken out by twisting the upper mold 1, which saves mold changing time, improves operating efficiency, and thereby reduces the labor intensity of workers and improves equipment utilization.

[0085] When the clamping actuator moves toward the mounting base 2, on the one hand, the anti-fall lock hook 5 pushes the mold horizontally to close to the vertical reference surface 202 of the mounting base 2, and on the other hand, the mold is pushed upward through the third working surface 502 to close to the horizontal reference surface 201 of the mounting base 2, and finally the mold is clamped in both horizontal and vertical directions.

[0086] When the locking tooth 6 moves along the extension direction of the horizontally arranged protrusion 601, the angle between the fourth working surface 604 and the extension direction of the protrusion 601 is preferably 30° to 60°. The fourth working surface 604 can be an annular curved surface or a flat surface. The following embodiments are divided into the following embodiments according to the different structures of the clamping actuator in Embodiment 2:

[0087] Embodiment 2a is used for an asymmetric mold, and the fourth working surface 604 is an annular curved surface. Fig.16 As shown, the matching structure of the anti-falling lock hook 5 and the locking tooth 6 is as follows: a positioning column 603 extends obliquely downward from the bottom of the locking tooth 6, the fourth working surface 604 is the circumferential surface of the positioning column 603, and one end of the anti-falling lock hook 5 away from the upper mold clamping part 101 is provided with a positioning groove 503 coupled with the positioning column 603, and the elastic member 4 is sleeved on the circumferential surface of the positioning column 603. The positioning column 603 extends toward the mounting base 2.

[0088] The structure of one side of the anti-falling lock hook 5 that cooperates with the upper mold 1 is as follows: a convex hook 501 facing the mounting base 2 is set at the bottom of the second working surface 5011, and the upper surface of the convex hook 501 is a horizontal plane, which serves as the third working surface 502. A baffle 504 is extended from the top of the second working surface 5011 toward the mounting base 2. The baffle 504 isolates the upper mold 1 from the surface of the mounting base 2 located above the baffle 504, and is used to fill the gap between the upper mold 1 and the surface of the mounting base 2 to prevent the upper mold 1 from shaking during the bending process. In addition, when the upper mold 1 is not installed on a certain clamping actuator, the baffle 504 can play a role in limiting the horizontal direction to prevent the clamping actuator from continuously approaching the mounting base 2.

[0089] When the clamping actuator moves away from the clamping mounting base 2, the compressed elastic member 4 will exert a force to resist the anti-falling lock hook 5 from moving away from the mounting base 2 along with the locking tooth 6, so that the anti-falling lock hook 5 itself will not move in the direction of the displacement of the locking tooth 6, but will keep pushing the mold to fit on the vertical reference surface 202 of the base.

[0090] The above-mentioned resistance force will also generate a component force that pushes the anti-falling lock hook 5 away from the horizontal reference plane 201 of the mounting base 2 in the vertical direction, and under the combined gravity of the mold and the anti-falling lock hook 5, a vertical downward displacement is generated.

[0091] Fig.17 and Fig.18 Schematic diagram of the process of clamping and disassembling the mold using the locking mechanism described in Example 2a. When loading and clamping the mold, as shown in FIG. Fig.17 As shown, the clamping actuator is first in a loose state, the baffle 504 initially rests on the vertical reference surface 202, and there is a certain distance between the baffle 504 and the surface of the mounting base 2 located above it. The upper mold 1 is loaded from bottom to top. When the upper mold 1 squeezes the convex hook 501, the baffle 504 moves away from the vertical reference surface 202, so that the upper mold clamping part 101 smoothly enters above the convex hook 501, and then the clamping actuator clamps the upper mold 1, and the baffle 504 gradually approaches the surface of the mounting base 2 located above it, until the upper mold clamping part 101 fits the horizontal reference surface 201. When the upper mold 1 is unloaded, as shown in FIG. Fig.18 As shown, the clamping actuator is released, the upper mold 1 is separated from the horizontal reference plane 201, and the upper mold 1 is tilted until the upper mold 1 is separated from the convex hook 501, and the upper mold 1 can be taken out.

[0092] Embodiment 2b is applicable to both symmetrical molds and asymmetrical molds, and the fourth working surface 604 is an annular curved surface. Fig.19As shown, the matching structure of the anti-falling lock hook 5 and the locking tooth 6 is the same as that of Example 2a, and the structure of one side of the anti-falling lock hook 5 matching with the upper mold 1 is: a convex hook 501 facing the mounting base 2 is arranged at the bottom of the second working surface 5011, and the upper surface of the convex hook 501 is a horizontal plane, which serves as the third working surface 502. The second working surface 5011 is against the lateral end surface of the mounting base 2. At this time, the horizontal reference plane 201 and the third working surface 502 are clamped between the upper and lower surfaces of the upper mold clamping part 101.

[0093] Embodiment 2c is applicable to both symmetrical and asymmetrical molds, and the fourth working surface 604 is an inclined surface. The coupling surface of the anti-falling lock hook 5 and the third working surface 502 are respectively located on both sides of the anti-falling lock hook 5; the coupling surface of the anti-falling lock hook 5 corresponds to the working surface on the anti-falling lock hook 5 that is coupled with the fourth working surface 604; the telescopic direction of the elastic member 4 is parallel to the extension direction of the protrusion 601. The matching structure of the anti-fall lock hook 5 and the locking tooth 6 is: a U-shaped opening 505 is provided at the top of the anti-fall lock hook 5, and vertically arranged long grooves 506 are provided on the inner side walls on both sides of the U-shaped opening 505; a tooth hook connector 507 is connected between the anti-fall lock hook 5 and the locking tooth 6, and a short shaft 5071 suitable for inserting into the long groove 506 and a top column 5072 suitable for sleeved with the elastic member 4 are provided on the tooth hook connector 507, and a sliding groove 6012 is provided in the middle of the protrusion 601. When the elastic member 4 is extended or retracted, the tooth hook connector 507 reciprocates in the sliding groove 6012 in a direction parallel to the extension and retraction direction of the elastic member 4, and the short shaft 5071 reciprocates vertically in the long groove 506.

[0094] like Fig. 22As shown, the open end of the U-shaped opening 505 faces upward, the width of the long groove 506 matches the short axis 5071, the tooth hook connector 507 is divided into an upper and lower part, the upper part is provided with a short axis 5071, and the lower part is provided with a top column 5072. Two short axes 5071 are symmetrically arranged on the upper part of the tooth hook connector 507, and the two short axes 5071 are not connected to each other. A through hole 5073 is arranged in the middle part of the tooth hook connector 507 in the horizontal direction (left and right direction). The upper part of 507 is sleeved in the sliding groove 6012, and the upper and lower horizontal inner groove walls of the sliding groove 6012 are respectively fitted with the upper surface of the tooth hook connector 507 and the horizontal inner hole wall above the first through hole 5073, so that the tooth hook connector 507 and the locking tooth 6 are relatively static in the vertical direction. When the locking tooth 6 moves in the horizontal direction, the tooth hook connector 507 moves from one end of the sliding groove 6012 to the other end of the sliding groove 6012. The bottom of the locking tooth 6 extends a protruding tooth portion 605 toward the anti-falling lock hook 5, and the outer end surface of the protruding tooth portion 605 is inclined upward to form a fourth working surface 604 coupled with the anti-falling lock hook 5, and a downwardly inclined coupling surface is correspondingly provided on the anti-falling lock hook 5. A top post hole 606 suitable for inserting the top post 5072 is provided on the surface of the locking tooth 6 between the protruding tooth portion 605 and the protrusion 601. The elastic member 4 is a wire coil spring, a wave spring, a disc spring or a leaf spring.

[0095] The structure of one side of the anti-falling lock hook 5 matched with the upper mold 1 in this embodiment is the same as that in embodiment 2b.

[0096] The working principle of the clamping actuator described in this embodiment is as follows: when the locking tooth 6 approaches the mounting base 2 in the horizontal direction, the top column hole 606 gradually approaches the tooth hook connector 507, so that the top column 5072 extends into the top column hole 606, compressing the elastic member 4. At the same time, under the action of the fourth working surface 604, the anti-falling locking hook moves vertically upward, and the short shaft 5071 moves from the upper part of the long groove 506 to the lower part (the short shaft 5071 is a fixed component, and the anti-falling locking hook 5 moves), thereby clamping the upper mold 1 between the third working surface 502 and the horizontal reference surface 201. Fig.23 Schematic diagram of the clamping state of the mold. When the locking tooth 6 moves away from the mounting base 2 in the horizontal direction, the top column hole 606 gradually moves away from the tooth hook connector 507, so that the top column 5072 gradually extends out of the top column hole 606 (not completely extended), and the compression amount of the elastic member 4 decreases. At the same time, under the action of the fourth working surface 604, the anti-fall locking hook moves vertically downward, and the short shaft 5071 moves from the lower part of the long groove 506 to the upper part, so that the upper mold 1 is separated from the horizontal reference surface 201. Fig.24 This is a schematic diagram of the mold release state.

[0097] Embodiment 2d: The application scope of this embodiment is the same as that of embodiment 2c. The difference from embodiment 2e is that the connection method between the protrusion 601 and the anti-falling lock hook 5 is different. Figure 25-28As shown, in this embodiment, the upper part of the anti-falling lock hook 5 has a long hole 508, the elastic member 4 is axially limited between the anti-falling lock hook 5 and the locking tooth 6, and the protrusion 601 passes through the long hole 508 and couples with the sliding hole 204. Under the thrust of the elastic member 4, the anti-falling lock hook 5 is pushed against the vertical side surface of the mounting base 2, and there is only vertical relative movement between the long hole 508 and the protrusion 601.

[0098] The installation method of the elastic member 4 can be but is not limited to the following structure: Fig.25 As shown, the elastic member 4 is sleeved on the circumferential outer side of the protrusion 601 and is axially limited between the long hole 508 and the locking tooth 6. An arc top hook pad 7 is provided between the elastic member 4 and the anti-falling lock hook 5, and the coupling between the arc top hook pad 7 and the anti-falling lock hook is line contact.

[0099] The working principle of the clamping actuator described in this embodiment is as follows: when the locking tooth 6 approaches the mounting base 2 in the horizontal direction, the elastic member 4 is compressed, and at the same time, under the action of the fourth working surface 604, the anti-falling locking hook moves vertically upward, and the protrusion 601 is transferred from the upper part of the long hole 508 to the lower part, thereby clamping the upper mold 1 between the third working surface 502 and the horizontal reference surface 201, as shown in FIG. Fig.26 Schematic diagram of the clamping state of the mold. When the locking tooth 6 moves away from the mounting base 2 in the horizontal direction, the compression amount of the elastic member 4 decreases. At the same time, under the action of the fourth working surface 604, the anti-fall locking hook moves vertically downward, and the protrusion 601 moves from the lower part of the long hole 508 to the upper part, so that the upper mold 1 is separated from the horizontal reference surface 201. Fig. 27 The figure is a schematic diagram of the mold in the loose state. The figure is a schematic diagram of the clamping and loosening state of the mold in this embodiment.

[0100] The installation method of the elastic member 4 can also be the following structure: a locking screw 8 is fixed to the surface of the locking tooth 6 opposite to the anti-falling lock hook 5, the elastic member 4 is sleeved on the locking screw 8, and the elastic member 4 is respectively against the surface of the anti-falling lock hook 5 and the surface of the locking tooth 6. Fig.28 As shown, the locking screw 8 is located below the protrusion 601, the two ends of the elastic member 4 abut against the surface of the anti-fall lock hook 5, and the middle part abuts against the surface of the locking tooth 6. The elastic member 4 can specifically be a compression spring.

[0101] From the perspective of manufacturing difficulty, the coupling surfaces of the locking tooth 6 and the anti-falling lock hook 5 in Example 2c and Example 2d are outer surfaces, and only the outer surfaces of the locking tooth 6 and the anti-falling lock hook 5 need to be processed flat. However, the inner surfaces of the coupling surfaces of the locking tooth 6 and the anti-falling lock hook 5 in Example 2a and Example 2b (i.e., the circumferential side surfaces of the positioning groove 503) are more difficult to process, and therefore, the clamping actuator components of Example 2c and Example 2d are less difficult to manufacture than those of Example 2a and Example 2b. From the perspective of structural complexity, the structure of the clamping actuator components is gradually simplified from Example 2c to Example 2d (Example 2d has two embodiments).

[0102] Embodiment 3, based on Embodiment 2, the locking mechanism further comprises a driving assembly suitable for driving the clamping actuator assembly to approach or move away from the mounting base. The driving assembly adopts a one-button driving mode to realize rapid loosening and clamping (one-button clamping) of the bending mold (upper and lower molds), avoiding the need for repeated operations of hundreds of times for traditional manual quick clamping, saving mold change time, improving operating efficiency, thereby reducing the labor intensity of workers, improving equipment utilization, and laying the foundation for mold change automation. The driving assembly adopts hydraulic drive or pneumatic drive.

[0103] In this embodiment, the drive assembly adopts a split structure, which can be but not limited to the following structures: Figure 2 , Figure 5 , Fig.10 and Fig.11As shown, the driving assembly 3 includes an eccentric shaft driving body and an eccentric shaft 3012 arranged in a vertical direction, the lower outer edge of the eccentric shaft 3012 is an eccentric working surface 30121; the top of the locking tooth 6 has a first working surface 602 in contact with the eccentric working surface 30121, the eccentric shaft driving body drives the eccentric shaft 3012 to rotate, and the eccentric shaft 3012 pushes the locking tooth 6 to approach or move away from the lateral side of the mounting base 2 through the first working surface 602. The eccentric shaft 3012 is a columnar structure, and the mounting base 2 and the eccentric shaft 3012 are located on both sides of the locking tooth 6 in the horizontal direction. The eccentric working surface 30121 refers to that the distances between each point on the outer edge of the eccentric shaft 3012 on the same end face and the center of the eccentric shaft 3012 are not equal, and the distances gradually increase or decrease. When the eccentric shaft 3012 rotates, the eccentric shaft 3012 is always in contact with the first working surface 602, and the central axis of the eccentric shaft 3012 is kept fixed, so that the first working surface 602 can be close to or away from the center of the eccentric shaft 3012 in the horizontal direction, thereby realizing the movement of the locking tooth 6 in the horizontal direction. Preferably, the farthest working end and the nearest working end of the eccentric working surface 30121 are connected by a plane transition surface 30122, and the farthest working end and the nearest working end refer to the end of the eccentric working surface 30121 that is farthest from the central axis of the eccentric shaft 3012 and the end that is closest to it, respectively. When the contact portion between the first working surface 602 and the eccentric working surface 30121 is transferred from the farthest working end to the nearest working end, the eccentric shaft 3012 will not be able to continue to rotate due to the obstruction of the plane transition surface 30122, thereby achieving a limiting effect.

[0104] The eccentric shaft driving body includes a driver 3011 and an eccentric shaft driving member 3013. The driver 3011 is arranged on the upper part of the mounting base 2. The driver 3011 drives the eccentric shaft driving member 3013 to reciprocate in the vertical direction. A spiral track 30123 is provided on the circumferential side of the eccentric shaft 3012 located above the eccentric working surface 30121. The eccentric shaft driving member 3013 has a through hole 30131 matching the upper part of the eccentric shaft 3012, so that the eccentric shaft driving member 3013 can move along the spiral track 30123 relative to the eccentric shaft 3012. The driver 3011 is arranged in the vertical direction. The driver 3011 can be a power device with a telescopic thrust function such as a hydraulic cylinder, an air cylinder, a pneumatic muscle, a hydraulic expansion tube or a pneumatic expansion tube. When the driver is a hydraulic cylinder, an air cylinder or a pneumatic muscle, the installation structure of the driver is as follows: Figure 6 As shown, when the driver is a hydraulic expansion tube or a pneumatic expansion tube, the installation structure of the driver is as follows Fig.12The through hole 30131 has the same shape as the end surface of the eccentric shaft 3012. When the spiral track 30123 protrudes from the circumferential side of the eccentric shaft 3012, the circumferential inner wall of the through hole 30131 is correspondingly provided with a groove. When the spiral track 30123 is recessed toward the center of the eccentric shaft 3012, the circumferential inner wall of the through hole 30131 is correspondingly provided with a protrusion (such as Fig.10 as shown).

[0105] Regarding the structure of the driving assembly 3 described in this embodiment, as Figure 1 , Fig.10 and Fig.23 As shown, the upper part of the mounting base 2 is provided with a driver mounting hole 205 for mounting the driver 3011, and the middle part of the mounting base 2 is provided with a vertical movable groove 206; one end of the eccentric shaft driving member 3013 is inserted into the vertical movable groove 206, and the through hole 30131 is provided at the other end of the eccentric shaft driving member 3013, and the middle part of the eccentric shaft driving member 3013 is connected to the push rod of the driver 3011. The vertical movable groove 206 extends in the vertical direction and serves as a motion track of the eccentric shaft driving member 3013, which can effectively avoid the jamming phenomenon during the motion of the eccentric shaft driving member 3013. The eccentric shaft driving member 3013 is stuck in the vertical movable groove 206. Specifically, the end of the eccentric shaft driving member 3013 inserted into the vertical movable groove 206 is dovetail-shaped or T-shaped.

[0106] The working principle of this embodiment is as follows: the push rod of the driver 3011 pushes the eccentric shaft driving member 3013 to move downward (upward) along the vertical movable groove 206, thereby driving the eccentric shaft 3012 to rotate clockwise (counterclockwise) when viewed from top to bottom, and through the action of the eccentric structure, the clamping actuator is driven as a whole to approach the mounting base 2 (generally the displacement is 3-5mm), and finally the upper mold 1 is clamped; when the push rod of the driving body acts in the reverse direction, the clamping actuator can be moved away from the mounting base 2 (generally the displacement is 3-5mm) under the reverse action of the elastic member 4, and finally stops under the limiting action of the eccentric shaft 3012; the limiting action of the eccentric shaft 3012 means that when the eccentric shaft 3012 rotates counterclockwise, the contact portion between the first working surface 602 and the eccentric working surface 30121 is transferred from the farthest working end to the nearest working end, and is limited at the nearest working end.

[0107] The eccentric working surface 30121 and the spiral track 30123 in this embodiment can both play a role in amplifying the driving force. When the driver 3011 is pneumatically driven, this embodiment can amplify the driving force several times or even dozens of times, and pneumatic clamping will not be limited by compressed air pressure.

[0108] Under the driving assembly 3 described in this embodiment, Figure 6 and Figure 7The clamping and releasing states of the mold when the clamping actuator in Example 2a is used are shown. When the mold is in the clamping state, the eccentric shaft driving member 3013 is located at the bottom, the first working surface 602 contacts the farthest working end of the eccentric shaft 3012, the protrusion 601 extends into the sliding hole 204, and the positioning column 603 extends into the positioning groove 503. When the mold is in the releasing state, the eccentric shaft driving member 3013 moves to the top, the first working surface 602 contacts the nearest working end of the eccentric shaft 3012, and the locking tooth 6 moves away from the mounting base 2 in the horizontal direction, the protrusion 601 extends a distance from the sliding hole 204, and the point A on the positioning column 603 moves horizontally to the right, and the contact point between point A and the positioning groove 503 moves from point B1 to point B2, as shown in FIG. Figure 8 and Fig. 9 As shown, B1 moves vertically downward, that is, from the clamped state to the released state, the anti-falling lock hook 5 moves vertically downward, so that the horizontal reference surface 201 is separated from the surface of the upper mold 1. Fig. 20 and Fig.21 The schematic diagram of the clamping actuator in Example 2b is shown in the clamping and releasing state of the asymmetric mold. Fig.29 and Fig.30 The schematic diagram of the clamping actuator in Example 2b applied to the clamping and releasing states of a symmetrical mold is shown. Its working principle is the same as that of the clamping actuator in Example 2a, so it will not be repeated here.

[0109] Embodiment 4: The structure of the drive assembly 3 in this embodiment is different from that in embodiment 3. In this embodiment, the drive assembly 3 is an integrated structure. Figure 3 and Figure 4 As shown, it includes a driving cylinder 3021 and a telescopic rod 3022 arranged obliquely with respect to the central axis of the driving cylinder 3021. The protruding end of the driving cylinder 3021 is connected to one end of the telescopic rod 3022 through a wedge surface 3023. The top of the locking tooth 6 has a first working surface 602 in contact with the other end of the telescopic rod 3022. When the telescopic rod 3022 reciprocates, the telescopic rod 3022 pushes the locking tooth 6 to approach or move away from the lateral side of the mounting base 2 through the first working surface 602. The driving oil cylinder 3021 generally includes a cylinder body and an extension rod. The extension rod is extended in the vertical direction, and the telescopic rod 3022 is extended in the horizontal direction. In order to match the telescopic rod 3022, mutually perpendicular channels are arranged inside the cylinder body. When the extension rod moves downward, the extension rod squeezes the telescopic rod 3022 laterally, so that the telescopic rod 3022 gradually extends from the cylinder body. When the extension rod moves upward, a vacuum is formed below the extension rod. At the same time, the outer end of the extension rod is acted upon by the restoring force of the elastic member 4. Under the action of the pressure difference at both ends, the extension rod gradually moves toward the inside of the cylinder body. For embodiment 2b, a driver mounting hole 205 is arranged on the upper part of the mounting base 2 for mounting the drive assembly 3.

[0110] There are three main structures of the mounting base 2 in the present invention: Structure 1: used for asymmetric molds, with only a single-sided clamping function. Fig.13 As shown, the upper part of the mounting base 2 extends out along one lateral end, and the extended part is used to install the driver 3011 or the driving assembly 3. Since the force center of the asymmetric mold is located on one side of the upper mold clamping part 101, the horizontal reference plane 201 is located below one side of the vertical reference plane 202. At this time, the upper mold 1 cannot be installed in reverse. Structure 2: used for asymmetric molds, with double-sided clamping function. Fig.14 As shown, the upper part of the mounting base 2 extends out along both lateral ends, and the upper mold 1 can be installed on both lateral sides of the mounting base 2. The upper mold 1 shares the same horizontal reference plane 201 when installed in the forward and reverse directions. Structure 3: used for symmetrical molds, with double-sided clamping function. Fig.15 As shown, the upper part of the mounting base 2 extends out along one lateral end. Since the force center of the symmetrical mold is located at the center of the upper mold clamping part 101, the horizontal reference plane 201 is located above one side of the vertical reference plane 202. At this time, the upper mold 1 can be installed in reverse.

[0111] A quick clamping system for a bending mold, comprising an upper mold 1 and the locking mechanism described above, wherein an anti-drop groove 103 is provided on one or both lateral sides of the upper mold clamping portion 101 of the upper mold 1, and the third working surface 502 contacts the inner surface of the anti-drop groove 103. When manually unloading the mold, there is no need to press the button on the mold with your fingers, but you can focus on unloading the mold itself. For an asymmetric mold, the anti-drop groove 103 is provided on one side of the upper mold clamping portion 101, and the anti-drop groove 103 and the mold force center are respectively located on both sides of the upper mold clamping portion 101; for a symmetrical mold, the anti-drop groove 103 can be provided on both side surfaces of the upper mold clamping portion 101, so that forward and reverse installation can be achieved.

[0112] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0113] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A locking mechanism, characterized in that: The invention comprises a mounting base, one or more clamping actuators arranged longitudinally on one or both sides of the mounting base, the mold is clamped between the clamping actuators and the mounting base, the clamping actuators are close to or away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely; the top of the mounting base has a horizontal mounting surface in contact with the bending machine, and the bottom of the mounting base has a vertical reference surface and a horizontal reference surface for positioning the upper mold; the reverse force on the upper mold cutter head points to the horizontal reference surface; The clamping actuator assembly comprises a second working surface cooperating with the vertical reference surface to clamp the upper die clamping portion and a third working surface pressing the upper die clamping portion upward; The clamping actuator assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are located on the anti-falling lock hook; The locking tooth has a fourth working surface coupled with the anti-falling lock hook, and the fourth working surface has a certain inclination angle with the movement direction of the locking tooth, so that the anti-falling lock hook can simultaneously generate horizontal and vertical movements relative to the mounting base; A sliding hole is provided on the lateral side of the mounting base, a protrusion suitable for being inserted into the sliding hole is provided on the locking tooth, and the locking tooth approaches or moves away from the lateral side of the mounting base along the extending direction of the protrusion; The protrusions are arranged to extend in a horizontal direction; The clamping actuator assembly further comprises an elastic member located between the anti-falling lock hook and the locking tooth; the elastic member is suitable for squeezing the anti-falling lock hook and applying a force toward the vertical reference plane to the upper molded clamping portion through the anti-falling lock hook; A positioning column is extended obliquely downward from the bottom of the locking tooth, the fourth working surface is the circumferential surface of the positioning column, and one end of the anti-falling lock hook away from the upper mold clamping part is provided with a positioning groove coupled with the positioning column; the elastic member is sleeved on the circumferential surface of the positioning column; The locking mechanism further comprises a driving assembly adapted to drive the clamping actuator assembly to move closer to or away from the mounting base; The driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged in a vertical direction, wherein the lower outer edge of the eccentric shaft is an eccentric working surface; the top of the locking tooth has a first working surface in contact with the eccentric working surface, the eccentric shaft driving body drives the eccentric shaft to rotate, and the eccentric shaft pushes the locking tooth to approach or move away from the lateral side of the mounting base through the first working surface; The eccentric shaft driving body comprises a driver and an eccentric shaft driving member, wherein the driver is arranged on the upper part of the mounting base, and the driver drives the eccentric shaft driving member to reciprocate in the vertical direction; A spiral track is provided on the circumferential side surface of the eccentric shaft above the eccentric working surface, and a through hole matching the upper part of the eccentric shaft is provided on the eccentric shaft driving member, so that the eccentric shaft driving member moves along the spiral track relative to the eccentric shaft; A driver mounting hole is provided at the upper portion of the mounting base, and a vertical movable groove is provided at the middle portion of the mounting base; one end of the eccentric shaft driving member is inserted into the vertical movable groove, the through hole is provided at the other end of the eccentric shaft driving member, and the middle portion of the eccentric shaft driving member is connected to the push rod of the driver.

2. A locking mechanism, characterized in that: The invention comprises a mounting base, one or more clamping actuators arranged longitudinally on one or both sides of the mounting base, the mold is clamped between the clamping actuators and the mounting base, the clamping actuators are close to or away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely; the top of the mounting base has a horizontal mounting surface in contact with the bending machine, and the bottom of the mounting base has a vertical reference surface and a horizontal reference surface for positioning the upper mold; the reverse force on the upper mold cutter head points to the horizontal reference surface; The clamping actuator assembly comprises a second working surface cooperating with the vertical reference surface to clamp the upper die clamping portion and a third working surface pressing the upper die clamping portion upward; The clamping actuator assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are located on the anti-falling lock hook; The locking tooth has a fourth working surface coupled with the anti-falling lock hook, and the fourth working surface has a certain inclination angle with the movement direction of the locking tooth, so that the anti-falling lock hook can simultaneously generate horizontal and vertical movements relative to the mounting base; A sliding hole is provided on the lateral side of the mounting base, a protrusion suitable for being inserted into the sliding hole is provided on the locking tooth, and the locking tooth approaches or moves away from the lateral side of the mounting base along the extending direction of the protrusion; The protrusion is arranged to extend in the horizontal direction; the clamping actuator assembly further comprises an elastic member located between the anti-falling lock hook and the locking tooth; the elastic member is suitable for squeezing the anti-falling lock hook and applying a force toward the vertical reference plane to the upper molded clamping portion through the anti-falling lock hook; The fourth working surface is an inclined surface, and the coupling surface of the anti-falling lock hook and the third working surface are respectively located on both sides of the anti-falling lock hook; the coupling surface of the anti-falling lock hook corresponds to the working surface on the anti-falling lock hook that is coupled with the fourth working surface; The expansion and contraction direction of the elastic member is parallel to the extension direction of the protrusion; A U-shaped opening is provided on the top of the anti-fall lock hook, and vertically arranged long grooves are provided on the inner side walls on both sides of the U-shaped opening; A tooth hook connector is connected between the anti-fall lock hook and the locking tooth, and the tooth hook connector is provided with a short shaft suitable for inserting into the long slot and a top column suitable for sleeve-mounting the elastic member; a sliding slot is provided in the middle of the protrusion; when the elastic member is extended or retracted, the tooth hook connector reciprocates in the sliding slot in a direction parallel to the extension direction of the protrusion, and the short shaft reciprocates vertically in the long slot; The locking mechanism further comprises a driving assembly adapted to drive the clamping actuator assembly to move closer to or away from the mounting base; The driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged in a vertical direction, wherein the lower outer edge of the eccentric shaft is an eccentric working surface; the top of the locking tooth has a first working surface in contact with the eccentric working surface, the eccentric shaft driving body drives the eccentric shaft to rotate, and the eccentric shaft pushes the locking tooth to approach or move away from the lateral side of the mounting base through the first working surface; The eccentric shaft driving body comprises a driver and an eccentric shaft driving member, wherein the driver is arranged on the upper part of the mounting base, and the driver drives the eccentric shaft driving member to reciprocate in the vertical direction; A spiral track is provided on the circumferential side surface of the eccentric shaft above the eccentric working surface, and a through hole matching the upper part of the eccentric shaft is provided on the eccentric shaft driving member, so that the eccentric shaft driving member moves along the spiral track relative to the eccentric shaft; A driver mounting hole is provided at the upper portion of the mounting base, and a vertical movable groove is provided at the middle portion of the mounting base; one end of the eccentric shaft driving member is inserted into the vertical movable groove, the through hole is provided at the other end of the eccentric shaft driving member, and the middle portion of the eccentric shaft driving member is connected to the push rod of the driver.

3. A locking mechanism, characterized in that: The invention comprises a mounting base, one or more clamping actuators arranged longitudinally on one or both sides of the mounting base, the mold is clamped between the clamping actuators and the mounting base, the clamping actuators are close to or away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely; the top of the mounting base has a horizontal mounting surface in contact with the bending machine, and the bottom of the mounting base has a vertical reference surface and a horizontal reference surface for positioning the upper mold; the reverse force on the upper mold cutter head points to the horizontal reference surface; The clamping actuator assembly comprises a second working surface cooperating with the vertical reference surface to clamp the upper die clamping portion and a third working surface pressing the upper die clamping portion upward; The clamping actuator assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are located on the anti-falling lock hook; The locking tooth has a fourth working surface coupled with the anti-falling lock hook, and the fourth working surface has a certain inclination angle with the movement direction of the locking tooth, so that the anti-falling lock hook can simultaneously generate horizontal and vertical movements relative to the mounting base; A sliding hole is provided on the lateral side of the mounting base, a protrusion suitable for being inserted into the sliding hole is provided on the locking tooth, and the locking tooth approaches or moves away from the lateral side of the mounting base along the extending direction of the protrusion; The protrusion is arranged to extend in the horizontal direction; the clamping actuator assembly further comprises an elastic member located between the anti-falling lock hook and the locking tooth; the elastic member is suitable for squeezing the anti-falling lock hook and applying a force toward the vertical reference plane to the upper molded clamping portion through the anti-falling lock hook; The fourth working surface is an inclined surface, and the coupling surface of the anti-falling lock hook and the third working surface are respectively located on both sides of the anti-falling lock hook; the coupling surface of the anti-falling lock hook corresponds to the working surface on the anti-falling lock hook that is coupled with the fourth working surface; The expansion and contraction direction of the elastic member is parallel to the extension direction of the protrusion; The upper part of the anti-falling lock hook is provided with an elongated hole, and the protrusion passes through the elongated hole and is coupled with the sliding hole; the elastic member is axially limited between the anti-falling lock hook and the locking tooth; The elastic member is sleeved on the circumferential outer side of the protrusion and is axially limited between the long hole and the locking tooth; The locking mechanism further comprises a driving assembly adapted to drive the clamping actuator assembly to move closer to or away from the mounting base; The driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged in a vertical direction, wherein the lower outer edge of the eccentric shaft is an eccentric working surface; the top of the locking tooth has a first working surface in contact with the eccentric working surface, the eccentric shaft driving body drives the eccentric shaft to rotate, and the eccentric shaft pushes the locking tooth to approach or move away from the lateral side of the mounting base through the first working surface; The eccentric shaft driving body comprises a driver and an eccentric shaft driving member, wherein the driver is arranged on the upper part of the mounting base, and the driver drives the eccentric shaft driving member to reciprocate in the vertical direction; A spiral track is provided on the circumferential side surface of the eccentric shaft above the eccentric working surface, and a through hole matching the upper part of the eccentric shaft is provided on the eccentric shaft driving member, so that the eccentric shaft driving member moves along the spiral track relative to the eccentric shaft; A driver mounting hole is provided at the upper portion of the mounting base, and a vertical movable groove is provided at the middle portion of the mounting base; one end of the eccentric shaft driving member is inserted into the vertical movable groove, the through hole is provided at the other end of the eccentric shaft driving member, and the middle portion of the eccentric shaft driving member is connected to the push rod of the driver.

4. A locking mechanism, characterized in that: The invention comprises a mounting base, one or more clamping actuators arranged longitudinally on one or both sides of the mounting base, the mold is clamped between the clamping actuators and the mounting base, the clamping actuators are close to or away from the mounting base along a plane perpendicular to the longitudinal direction; and adjacent clamping actuators are arranged closely; the top of the mounting base has a horizontal mounting surface in contact with the bending machine, and the bottom of the mounting base has a vertical reference surface and a horizontal reference surface for positioning the upper mold; the reverse force on the upper mold cutter head points to the horizontal reference surface; The clamping actuator assembly comprises a second working surface cooperating with the vertical reference surface to clamp the upper die clamping portion and a third working surface pressing the upper die clamping portion upward; The clamping actuator assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are located on the anti-falling lock hook; The locking tooth has a fourth working surface coupled with the anti-falling lock hook, and the fourth working surface has a certain inclination angle with the movement direction of the locking tooth, so that the anti-falling lock hook can simultaneously generate horizontal and vertical movements relative to the mounting base; A sliding hole is provided on the lateral side of the mounting base, a protrusion suitable for being inserted into the sliding hole is provided on the locking tooth, and the locking tooth approaches or moves away from the lateral side of the mounting base along the extending direction of the protrusion; The protrusion is arranged to extend in the horizontal direction; the clamping actuator assembly further comprises an elastic member located between the anti-falling lock hook and the locking tooth; the elastic member is suitable for squeezing the anti-falling lock hook and applying a force toward the vertical reference plane to the upper molded clamping portion through the anti-falling lock hook; The fourth working surface is an inclined surface, and the coupling surface of the anti-falling lock hook and the third working surface are respectively located on both sides of the anti-falling lock hook; the coupling surface of the anti-falling lock hook corresponds to the working surface on the anti-falling lock hook that is coupled with the fourth working surface; The expansion and contraction direction of the elastic member is parallel to the extension direction of the protrusion; The upper part of the anti-falling lock hook is provided with an elongated hole, and the protrusion passes through the elongated hole and is coupled with the sliding hole; the elastic member is axially limited between the anti-falling lock hook and the locking tooth; A locking screw is fixed on the surface of the locking tooth opposite to the anti-falling lock hook, the elastic member is sleeved on the locking screw, and the elastic member abuts against the surface of the anti-falling lock hook and the surface of the locking tooth respectively; The locking mechanism further comprises a driving assembly adapted to drive the clamping actuator assembly to move closer to or away from the mounting base; The driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged in a vertical direction, wherein the lower outer edge of the eccentric shaft is an eccentric working surface; the top of the locking tooth has a first working surface in contact with the eccentric working surface, the eccentric shaft driving body drives the eccentric shaft to rotate, and the eccentric shaft pushes the locking tooth to approach or move away from the lateral side of the mounting base through the first working surface; The eccentric shaft driving body comprises a driver and an eccentric shaft driving member, wherein the driver is arranged on the upper part of the mounting base, and the driver drives the eccentric shaft driving member to reciprocate in the vertical direction; A spiral track is provided on the circumferential side surface of the eccentric shaft above the eccentric working surface, and a through hole matching the upper part of the eccentric shaft is provided on the eccentric shaft driving member, so that the eccentric shaft driving member moves along the spiral track relative to the eccentric shaft; A driver mounting hole is provided at the upper portion of the mounting base, and a vertical movable groove is provided at the middle portion of the mounting base; one end of the eccentric shaft driving member is inserted into the vertical movable groove, the through hole is provided at the other end of the eccentric shaft driving member, and the middle portion of the eccentric shaft driving member is connected to the push rod of the driver.

5. A bending die quick clamping system, characterized in that: It comprises an upper mold and the locking mechanism according to any one of claims 1 to 4, wherein an anti-falling groove is arranged on one or both lateral sides of the upper mold clamping part of the upper mold, and the third working surface contacts the inner surface of the anti-falling groove.

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