CN111167949A

CN111167949A - Locking mechanism and bending die rapid clamping system comprising same

Info

Publication number: CN111167949A
Application number: CN202010127718.2A
Authority: CN
Inventors: 王勇; 林艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-05-19

Abstract

The invention discloses a locking mechanism and a rapid clamping system of a bending die comprising the same, wherein the locking mechanism comprises a mounting base and one or more groups of clamping executing components which are longitudinally arranged on one or two transverse sides of the mounting base, the die is clamped between the clamping executing components and the mounting base, and the clamping executing components are close to or far away from the mounting base along a plane vertical to the longitudinal direction; and, disposed immediately adjacent to the clamp actuation assembly. The invention can completely eliminate the situation that the die cannot be completely clamped (potential safety hazard can occur) when the clamping position is slightly changed due to die processing errors or die abrasion and the like, and ensure that any section of die at any mounting position on the mounting base is uniformly and consistently clamped without attenuation of the clamping force.

Description

Locking mechanism and bending die rapid clamping system comprising same

Technical Field

The invention relates to the field of bending die clamping, in particular to a locking mechanism and a bending die rapid clamping system comprising the same.

Background

In a workpiece bending process, an upper bending die (referred to as an upper die in the application) and a lower bending die are generally used, the upper bending die is provided with an upper die clamping portion and an upper die tool bit, the lower bending die is v-shaped, a workpiece is placed between the upper bending die and the lower bending die, the upper die clamping portion is clamped on a bending machine, and the upper die tool bit applies acting force to the surface of the workpiece to bend the workpiece.

According to different classifications of relative positions of center lines of an upper die cutter head and an upper die clamping part, the bending upper die is provided with two types of symmetrical heads and asymmetrical heads, the clamping of the bending upper die (generally called European type or Almak type) with asymmetrical heads is a manual or pneumatic split type quick clamp, each bending machine is provided with a plurality of to dozens of different parts (taking a bending machine with a 3-meter workbench as an example, an operator needs to repeatedly loosen and lock dozens or hundreds of times when changing the die each time, even if the position of the bending lower die is simply moved left and right, time and labor are consumed), a clearance of dozens of millimeters is generally reserved between every two split type quick clamps, and the clearance positions are not used for installing small segmented dies, which is not beneficial to implementation and application of an automatic die changing technology.

For the bending upper die with symmetrical head (generally called a through quick/pull type), although hydraulic or pneumatic integrated clamping is available, on one hand, a button or a fixed safety pin must be additionally arranged at the neck of the die when the die leaves a factory. For long dies with a length of e.g. 500mm and more, which can only be fitted with fixed safety pins due to their heavy weight, it is necessary to insert the integrated clamping device from the side of the bending machine, and the machining of these buttons and safety pins complicates the manufacturing process of the die; on the other hand, the pneumatic clamping is limited by the pressure of compressed air, and the clamping force applied by the independent air cylinder corresponding to each clamping tooth is far less than that of the common hydraulic clamping.

In addition, when the bending upper die is loosened in the prior art, the bending upper die needs to be caught by a hand or a tray, otherwise, the bending upper die directly falls off, the die is easily damaged, and the working efficiency is low when the die is replaced.

Disclosure of Invention

The invention provides a locking mechanism and a bending die rapid clamping system comprising the same to solve the technical problems that independent control of a segmented die cannot be realized by a clamping mechanism in the prior art, the requirement on the casting precision of the segmented die is high, or the clamping of a part of the segmented die is easy to loose.

The invention provides a locking mechanism, which comprises a mounting base and one or more groups of clamping executing components arranged on one or two transverse sides of the mounting base along the longitudinal direction, wherein a mould is clamped between the clamping executing components and the mounting base, and the clamping executing components are close to or far away from the mounting base along a plane vertical to the longitudinal direction; and, disposed immediately adjacent to the clamp actuation assembly.

Further, the top of the mounting base is provided with a horizontal mounting surface which is in contact with the bending machine, and the bottom of the mounting base is provided with a vertical reference surface and a horizontal reference surface for positioning the upper die; the reverse acting force applied to the upper die cutter head points to the horizontal datum plane. The clamping executing assembly is provided with a second working surface which is matched with the vertical reference surface to clamp the upper die clamping part and a third working surface which upwards pushes and presses the upper die clamping part.

When the bending machine bends a workpiece, the upper die cutter head downwards extrudes the workpiece, the workpiece has vertical upward reverse acting force on the upper die cutter head, a horizontal reference surface right opposite to the reverse acting force is arranged on the mounting base, and a stress center of the upper die during working on the horizontal reference surface has a supporting effect, so that the upper die can be effectively prevented from being twisted and deformed.

Furthermore, the clamping execution assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are positioned on the anti-falling lock hook; the locking teeth are provided with fourth working surfaces coupled with the anti-falling lock hook, and the fourth working surfaces and the movement direction of the locking teeth have a certain inclination angle, so that the anti-falling lock hook can simultaneously generate movement in the horizontal direction and the vertical direction relative to the mounting base.

The locking tooth through with prevent weighing down the coupling effect of latch hook, make prevent weighing down the latch hook relative the mounting base has the relative motion of vertical direction, the coupling is that the locking tooth with prevent weighing down the latch hook and mutually support and connect, work as locking the executive component and keeping away from when the horizontal side of mounting base, prevent weighing down the latch hook and loosen in vertical direction go up mould clamping portion, as long as the slope this moment go up the mould roof pressure and press prevent weighing down the second working face of latch hook, until it breaks away from to go up mould clamping portion the third working face, the one-hand can accomplish and dismantle work.

Furthermore, a sliding hole is formed in the transverse side face of the mounting base, a protruding block suitable for being inserted into the sliding hole is arranged on the locking tooth, and the locking tooth is close to or far away from the transverse side face of the mounting base along the extending direction of the protruding block.

Furthermore, the convex block extends along the horizontal direction, and the included angle between the fourth working surface and the extending direction of the convex block is 30-60 degrees.

Further, the locking execution assembly further comprises an elastic body positioned between the anti-falling lock hook and the locking tooth; the elastic piece is suitable for extruding the anti-falling lock hook and applies acting force towards the vertical reference surface to the upper die clamping part through the anti-falling lock hook.

Furthermore, a positioning column extends from the bottom of the locking tooth in an oblique downward direction, the fourth working surface is the circumferential surface of the positioning column, a positioning groove coupled with the positioning column is formed in one end, far away from the upper die clamping portion, of the anti-falling locking hook, and the elastic piece is sleeved on the circumferential surface of the positioning column.

Preferably, the fourth working surface is an inclined surface, and the coupling surface and the third working surface of the anti-falling lock hook are respectively positioned on two sides of the anti-falling lock hook; the coupling surface of the anti-falling lock hook corresponds to a working surface coupled with the fourth working surface on the anti-falling lock hook; the telescopic direction of the elastic piece is parallel to the extending direction of the convex block.

Preferably, the top of the anti-falling lock hook is provided with a U-shaped opening, and the inner side walls of two sides of the U-shaped opening are provided with vertically arranged long grooves; prevent weighing down the latch hook with be connected with the tooth hook connector between the locking tooth, be equipped with on the tooth hook connector and be suitable for to insert the minor axis in long type groove is established with being suitable for the cover the fore-set of elastic component, the middle part of lug has the sliding tray, works as when the elastic component is flexible, the tooth hook connector is in along being on a parallel with in the sliding tray the flexible direction of elastic component makes reciprocating motion, just the minor axis is in vertical reciprocating motion is made to long type inslot.

Preferably, the upper portion of the anti-falling lock hook is provided with a long hole, the elastic element is axially limited between the anti-falling lock hook and the locking teeth, and the projection penetrates through the long hole and is coupled with the sliding hole.

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

Preferably, a locking screw is fixed on the surface of the locking tooth opposite to the anti-falling locking hook, the elastic piece is sleeved on the locking screw, and the elastic piece is respectively abutted against the surface of the anti-falling locking hook and the surface of the locking tooth.

Further, the locking mechanism further comprises a driving assembly adapted to drive the clamping actuating assembly to move toward or away from the mounting base.

Preferably, the driving assembly is driven by hydraulic pressure or pneumatic pressure.

Furthermore, the driving assembly comprises a driving oil cylinder and a telescopic rod obliquely arranged with a central shaft of the driving oil cylinder, the extending end of the driving oil cylinder is connected with one end of the telescopic rod through a wedge surface, the top of the locking tooth is provided with a first working surface contacted with the other end of the telescopic rod, and when the telescopic rod does reciprocating motion, the telescopic rod pushes the locking tooth to be close to or far away from the transverse side surface of the mounting base through the first working surface.

Further, the driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged along the vertical direction, and the outer edge of the lower part of the eccentric shaft is an eccentric working surface; the top of the locking tooth is provided with 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 be close to or far away from the transverse side surface of the mounting base through the first working surface.

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

Further, the eccentric shaft driving body comprises a driver and an eccentric shaft driving part, the driver is arranged at the upper part of the mounting base, and the driver drives the eccentric shaft driving part to reciprocate along the vertical direction; the circumferential side surface of the eccentric shaft above the eccentric working surface is provided with a spiral track, and the eccentric shaft driving part is provided with a through hole matched with the upper part of the eccentric shaft, so that the eccentric shaft driving part moves along the spiral track relative to the eccentric shaft.

Furthermore, the upper part of the mounting base is provided with a driver mounting hole, and the middle part of the mounting base is provided with a vertical movable groove; one end of the eccentric shaft driving part is inserted into the vertical movable groove, the through hole is formed in the other end of the eccentric shaft driving part, and the middle of the eccentric shaft driving part is connected with the push rod of the driver.

Preferably, the driver is a hydraulic cylinder, an air cylinder, a pneumatic tendon, a hydraulic expansion pipe or a pneumatic expansion pipe.

Preferably, the end of the eccentric shaft driving member inserted into the vertical movable groove is in a dovetail shape.

The invention also provides a rapid clamping system of the bending die, which comprises an upper die and the locking mechanism, wherein one or two transverse sides of the upper die clamping part of the upper die are provided with anti-falling grooves, and the third working surface is in contact with the inner surfaces of the anti-falling grooves.

The invention has the beneficial effects that:

(1) according to the invention, one or more groups of clamping executing assemblies are arranged on the mounting base, each segmented mold corresponds to one group of clamping executing assemblies respectively, and the adjacent clamping executing assemblies are arranged next to each other, so that the condition that the mold cannot be completely clamped (potential safety hazard can occur) when the clamping position has slight change due to mold processing error or mold abrasion and the like can be completely eliminated, and the uniform and consistent clamping of any section of mold at any mounting position on the mounting base is ensured, and the clamping force is not attenuated; and different sections or batches of moulds can be used interchangeably.

(2) The invention is designed aiming at the adaptability of the horizontal reference surface, and not only can be applied to a head symmetrical mold, but also can be applied to a head asymmetrical mold.

(3) According to the clamping execution assembly, the locking teeth and the anti-falling lock hook are coupled, so that the anti-falling lock hook can move in the horizontal direction and the vertical direction relative to the mounting base, when the clamping execution assembly is loosened, the upper die clamping part has a movable space in the vertical direction and the horizontal direction, and the upper die is convenient to disassemble.

(4) The clamping execution assembly is provided with the elastic body, and due to the elastic extrusion effect of the elastic piece on the anti-falling lock hook, when the elastic piece releases the elastic force, the pressing force of the anti-falling lock hook on the upper die is reduced while the anti-falling lock hook is still extruded on the surface of the upper die, and the die cannot automatically fall off due to the action of gravity, so that the safety problem of die falling is solved.

(5) The driving assembly can be opened or closed by one key, so that the quick loosening and clamping (one-key clamping) of the bending die (the upper die and the lower die) are realized, the situation that the traditional manual quick clamp needs hundreds of times of operations is avoided, the die changing time is saved, the operation efficiency is improved, the labor intensity of workers is reduced, the equipment utilization rate is improved, and the foundation of die changing automation is laid.

(6) All the moulds are arranged on an integral mounting base, and the positions of the moulds can be changed very conveniently and quickly if the positions of the moulds are required to be changed.

(7) The bending die rapid clamping system provided by the invention only needs to arrange the anti-falling groove on the die, and does not need to install a button or a safety pin, so that the dies in different lengths can be directly loaded and unloaded from the front, and the die changing efficiency is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is an exploded view of an embodiment of a rapid clamping system for a bending die according to the present invention;

FIG. 2 is a perspective view of a corresponding drive assembly of embodiment 3 of the locking mechanism of the present invention;

FIG. 3 is a perspective view of a corresponding drive assembly of embodiment 4 of the locking mechanism of the present invention;

FIG. 4 is a cross-sectional schematic view of the drive assembly shown in FIG. 3;

FIG. 5 is a schematic view of the construction of the eccentric shaft in the drive assembly shown in FIG. 2;

fig. 6 is a schematic view of a clamping actuator assembly applied to an asymmetric mold in a clamping state (a hydraulic/pneumatic cylinder/pneumatic tendon drive) according to embodiment 2a of the present invention;

FIG. 7 is a schematic view of a clamping actuator assembly of embodiment 2a of the present invention applied to an asymmetric mold in a released state;

FIG. 8 is an enlarged view at M of FIG. 6;

FIG. 9 is an enlarged view at N of FIG. 7;

FIG. 10 is a sectional view taken along line E-E of FIG. 6;

FIG. 11 is a sectional view taken along line F-F of FIG. 6;

fig. 12 is a schematic view of a clamping actuator assembly applied to an asymmetric mold in a clamped state (the actuator is a hydraulic or pneumatic expansion tube) in embodiment 2a of the present invention.

FIG. 13 is a schematic view of the construction of the mounting base of the present invention;

FIG. 14 is a second schematic view of the construction of the mounting base of the present invention;

FIG. 15 is a schematic view of a third embodiment of the mounting base of the present invention;

FIG. 16 is an exploded view of a clamp actuator assembly according to embodiment 2a of the present invention;

FIG. 17 is a schematic view of the locking mechanism of FIG. 6 during loading and clamping of the upper mold;

FIG. 18 is a schematic view of the locking mechanism of FIG. 6 during release and unloading of the upper mold;

FIG. 19 is an exploded view of a clamp actuator assembly according to embodiment 2b of the present invention;

FIG. 20 is a schematic view showing a state in which the clamping actuator assembly is in a clamped state in embodiment 2b of the present invention;

FIG. 21 is a schematic view showing a state in which the clamping actuator assembly is in a released state in embodiment 2b of the present invention;

FIG. 22 is an exploded view of a clamp actuator assembly according to embodiment 2c of the present invention;

FIG. 23 is a schematic view showing a state in which the clamping actuator assembly is in a clamped state in embodiment 2c of the present invention;

FIG. 24 is a schematic view showing a state in which the clamping actuator assembly is in a released state in embodiment 2c of the present invention;

FIG. 25 is an exploded view of a clamp actuator assembly according to embodiment 2e of the present invention;

fig. 26 is a schematic view showing a state in which the clamping actuator assembly is in a clamped state in embodiment 2e of the present invention;

FIG. 27 is a schematic view showing a state in which the clamp actuating assembly is in a unclamped state in embodiment 2e of the present invention;

FIG. 28 is an exploded view of a clamp actuator assembly according to embodiment 2e of the present invention;

fig. 29 is a schematic view of a clamping actuator assembly in accordance with embodiment 2a of the present invention in a clamped state applied to a symmetrical mold;

fig. 30 is a schematic view of a state in which the clamping actuator assembly of embodiment 2a of the present invention is applied to a symmetrical mold in an unclamped state.

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

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, the "vertical", "horizontal", and "longitudinal" are based on the direction shown in fig. 1, and the plane formed by the vertical direction and the horizontal direction is perpendicular to the longitudinal direction of the mounting base 2.

The invention is described in detail below with reference to specific embodiments, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Embodiment 1, a locking mechanism, as shown in fig. 1, 13-15, includes a mounting base 2, and a clamping actuator assembly, the clamping actuator assembly is disposed at one side or both sides of the mounting base 2 along a longitudinal direction, one or more sets of clamping actuator assemblies are arranged along the longitudinal direction, a mold is clamped between the clamping actuator assembly and the mounting base 2, and the clamping actuator assembly is close to or far from the mounting base 2 along a plane perpendicular to the longitudinal direction; and, disposed immediately adjacent to the clamp actuation assembly.

The mounting base 2 is a fixed part, the mounting base 2 is fixed on a bending machine, and the movement direction of the clamping execution assemblies is perpendicular to the arrangement direction of the clamping execution assemblies, so when the clamping execution assemblies clamp the die, the adjacent clamping execution assemblies cannot interfere with each other, the distance between the adjacent clamping execution assemblies in the invention can reach within 2mm (approximately to be arranged close to each other), compared with the gap of dozens of millimeters between the adjacent clamping mechanisms in the prior art, the gap between the adjacent clamping execution assemblies in the invention can be ignored, and the uniform clamping of any section of the die at any mounting position on the locking mechanism can be realized, and the clamping force is not attenuated.

In addition, the integrated clamping mechanism in the prior art can only apply the same acting force to different segmented molds, the surface treatment condition of each segmented mold is required to be kept consistent, otherwise, part of the segmented molds cannot be clamped, the clamping mechanism can apply clamping force to each segmented mold, and the situation that the molds cannot be completely clamped when the clamping position is slightly changed due to mold processing errors or mold abrasion and the like is completely eliminated.

The top of the mounting base 2 is provided with a horizontal mounting surface 203 contacted with the bending machine, and the bottom of the mounting base 2 is provided with a vertical reference surface 202 and a horizontal reference surface 201 for positioning the upper die 1; the opposing force received by the upper die cutter 102 is directed toward the horizontal reference surface 201. The clamping actuation assembly has a second face 5011 that cooperates with the vertical reference surface 202 to clamp the upper mold clamping portion 101 and a third face 502 that presses the upper mold clamping portion 101 upward. The mounting base 2 serves as a supporting main body of the upper die 1 and the clamping executing component, the mounting base is fixedly mounted on the lower surface of a bending machine, the horizontal mounting surface 203 is a contact surface of the mounting base 2 and the bending machine, the vertical reference surface 202 is a transverse side surface of the mounting base 2, the longitudinal length of the mounting base 2 can be set according to the length requirement of the upper die 1, a group of (single-sided mounting base 2) or two groups of (double-sided mounting base 2) upper dies 1 are usually arranged on one mounting base 2, each group of upper dies 1 is formed by splicing a plurality of longitudinally arranged segmented dies, and each segmented die corresponds to one clamping executing component.

In this embodiment, the clamping executing assembly has the following structure: the anti-falling locking device comprises locking teeth 6 and an anti-falling locking hook 5, wherein a second working surface 501 and a third working surface 502 are positioned on the anti-falling locking hook; the locking tooth 6 has a fourth working surface 604 coupled with the anti-falling 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-falling lock hook 5 can simultaneously generate movement in both horizontal and vertical directions relative to the mounting base 2.

The locking tooth 6 moves along a straight line, the movement direction of the locking tooth 6 can be controlled manually (the movement direction is not controllable at the moment, the locking tooth is not adopted generally), the locking tooth 6 can also move under the limiting effect of the structure, when the locking tooth 6 moves along the appointed direction, the anti-falling lock hook 5 moves along the fourth working surface 604 relative to the locking tooth 6, and because the appointed direction is not parallel to the fourth working surface 604, the anti-falling lock hook 5 can move successfully only by generating displacement, so that the anti-falling lock hook 5 is driven to move by the movement of the locking tooth 6, and the anti-falling lock hook 5 can move along the horizontal direction and the vertical direction relative to the mounting base 2 by reasonably controlling the angle between the fourth working surface 604 and the movement direction of the locking tooth 6.

The moving direction of the locking tooth in the embodiment is defined by the following structure: as shown in fig. 6, 7, 12, 20, 21, 23, 24, 26 and 27, the lateral side of the mounting base 2 is provided with a sliding hole 204, the locking tooth 6 is provided with a projection 601 adapted to be inserted into the sliding hole 204, and the locking tooth 6 is close to or away from the lateral side of the mounting base 2 along the extending direction of the projection 601. The projection 601 is coupled to the sliding hole 204, and a circumferential side surface of the projection 601 serves as a working surface (hereinafter, referred to as a fifth working surface 6011) when the locking teeth 6 reciprocate in a lateral direction. Preferably, the projection 601 extends along the horizontal direction, and the angle between the fourth working surface 604 and the extending direction of the projection 601 is 30 to 60 degrees, when the locking tooth 6 moves along the horizontal direction.

Embodiment 2, on the basis of embodiment 1, the locking execution assembly further comprises an elastic body 4 positioned between the anti-falling lock hook 5 and the locking tooth 6; the elastic member 4 is adapted to press the anti-falling lock hook 5, and apply an acting force towards the vertical reference plane 202 to the upper die clamping portion 101 through the anti-falling lock hook 5, wherein the acting force can be a total force or a component force, that is, the elastic force direction of the elastic member 4 can be opposite to the vertical reference plane 202 direction or can be inclined to extend towards the vertical reference plane 202 direction.

The acting force of the third working surface 502 of the anti-falling lock hook 5 on the upper die 1 is vertically upward for supporting the upper die 1, the third working surface 502 and the horizontal reference surface 201 limit the displacement of the upper die 1 along the vertical direction together, the second working surface 5011 and the vertical reference surface 202 limit the displacement of the upper die 1 along the horizontal direction together, and the elastic part 4 is a part with the functions of stretching and energy storage. When the upper die 1 is installed, the extrusion force of the elastic piece 4 on the anti-falling lock hook 5 is smaller, the upper die 1 is placed between the third working surface 502 and the horizontal reference surface 201, then the elastic piece 4 is driven to contract, the anti-falling lock hook 5 is further extruded, and the upper die 1 is clamped between the second working surface 5011 and the vertical reference surface 202.

Elastic component 4 has the extrusion force to preventing weighing down latch hook 5 all the time, when loosening during the tight executive component of clamp, prevent weighing down latch hook 5 and still can extrude last mould 1 between vertical reference surface 202 and second working face 5011, avoid going up mould 1 and fall, because elastic component 4 release elasticity this moment, elastic component 4 reduces to the extrusion force of preventing weighing down latch hook 5 promptly, as long as mould 1 just can take out last mould 1 in the wrench movement, save retooling time, improve operating efficiency, and then reduce workman intensity of labour, improve equipment utilization.

When the clamping actuating assembly is moved closer to the mounting base 2, the safety catch 5 pushes the mold in the horizontal direction against the vertical reference surface 202 of the mounting base 2, on the one hand, and pushes the mold upwards via this third working surface 502 against the horizontal reference surface 201 of the mounting base 2, on the other hand, and finally clamps the mold in both the horizontal and vertical directions.

When the locking tooth 6 moves along the extending direction of the horizontally arranged projection 601, the angle between the fourth working surface 604 and the extending direction of the projection 601 is preferably 30 ° to 60 °. The fourth working surface 604 may be an annular curved surface or a plane. The following embodiments are divided for the structural differences of the clamping actuator assembly in embodiment 2:

example 2a for an asymmetric mold, the fourth working surface 604 is a toroidal curved surface. As shown in fig. 16, the matching structure of the anti-falling lock hook 5 and the locking tooth 6 is as follows: a positioning column 603 extends from the bottom of the locking tooth 6 along an obliquely downward direction, a fourth working surface 604 is a circumferential surface of the positioning column 603, a positioning groove 503 coupled with the positioning column 603 is arranged at one end of the anti-falling locking hook 5 away from the upper die clamping portion 101, and the elastic member 4 is sleeved on the circumferential surface of the positioning column 603. The positioning posts 603 extend toward the mounting base 2.

With 1 complex of last mould prevent weighing down 5 side structures of latch hook do: the bottom of the second working face 5011 is provided with a convex hook 501 facing the direction of the mounting base 2, the upper surface of the convex hook 501 is a horizontal plane, the horizontal plane is used as a third working face 502, a baffle 504 extends from the top of the second working face 5011 to the direction of the mounting base 2, the baffle 504 isolates the upper die 1 from the surface of the mounting base 2 above the baffle 504, and is used for filling a gap between the upper die 1 and the surface of the mounting base 2, so that the upper die 1 is prevented from shaking in the bending working process. In addition, when the mold 1 is not mounted on a certain clamping executing component, the baffle 504 can play a role of limiting in the horizontal direction, and the clamping executing component is prevented from continuously approaching to the direction of the mounting base 2.

When the clamping execution assembly moves towards the direction far away from the clamping installation base 2, the compressed elastic piece 4 can apply a force resisting the displacement of the anti-falling lock hook 5 towards the direction far away from the installation base 2 along with the locking tooth 6, so that the anti-falling lock hook 5 does not displace along with the displacement direction of the locking tooth 6, and the anti-falling lock hook pushes the mold to be attached to the vertical reference surface 202 of the base.

The resistance also generates a partial acting force for pushing the anti-falling lock hook 5 to be away from the horizontal reference surface 201 of the mounting base 2 in the vertical direction, and the partial acting force generates a vertical downward displacement under the combined action of gravity of the mold and the anti-falling lock hook 5.

Fig. 17 and 18 are schematic diagrams illustrating a process of clamping and disassembling a mold using the locking mechanism described in embodiment 2a, when loading and clamping the mold, as shown in fig. 17, the clamping executing assembly is first in a released state, the baffle 504 initially abuts against the vertical reference surface 202, the baffle 504 is at a certain distance from the surface of the mounting base 2 above the baffle, the upper mold 1 is loaded from bottom to top, when the upper mold 1 presses the convex hook 501, the baffle 504 is far away from the vertical reference surface 202, so that the upper mold clamping portion 101 smoothly enters above the convex hook 501, and then the clamping executing assembly clamps the upper mold 1, and the baffle 504 and the surface of the mounting base 2 above the baffle gradually approach until the upper mold clamping portion 101 is attached to the horizontal reference surface 201. When the upper mold 1 is unloaded, as shown in fig. 18, the clamping performing assembly is released, the upper mold 1 is separated from the horizontal reference surface 201, 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.

In embodiment 2b, both symmetric and asymmetric molds are suitable, and the fourth working surface 604 is a circular curved surface. As shown in fig. 19, the matching structure of the anti-falling lock hook 5 and the locking tooth 6 is the same as that of the embodiment 2a, and the structure of one side of the anti-falling lock hook 5 matched with the upper die 1 is as follows: a protruding hook 501 is provided at the bottom of the second face 5011 in a direction toward the mounting base 2, the upper surface of the protruding hook 501 is a horizontal surface serving as a third face 502, the second face 5011 abuts against the lateral end face of the mounting base 2, and the horizontal reference surface 201 and the third face 502 are sandwiched between the upper and lower surfaces of the upper mold clamping unit 101.

In example 2c, both symmetrical and asymmetrical molds are suitable, and the fourth working surface 604 is a bevel. The coupling surface and the third working surface 502 of the anti-falling lock hook 5 are respectively positioned at two sides of the anti-falling lock hook 5; the coupling surface of the anti-falling lock hook 5 corresponds to the working surface of the anti-falling lock hook 5 coupled with the fourth working surface 604; the elastic member 4 extends in a direction parallel to the extending direction of the projection 601. The matching structure of the anti-falling lock hook 5 and the locking tooth 6 is as follows: the top of the anti-falling lock hook 5 is provided with a U-shaped opening 505, and the inner side walls of two sides of the U-shaped opening 505 are provided with vertically arranged long grooves 506; a tooth hook connecting body 507 is connected between the anti-falling lock hook 5 and the locking tooth 6, a short shaft 5071 suitable for being inserted into the long-shaped groove 506 and a top column 5072 suitable for being sleeved with the elastic piece 4 are arranged on the tooth hook connecting body 507, a sliding groove 6012 is formed in the middle of the convex block 601, when the elastic piece 4 stretches, the tooth hook connecting body 507 reciprocates in the sliding groove 6012 along the stretching direction parallel to the elastic piece 4, and the short shaft 5071 vertically reciprocates in the long-shaped groove 506.

As shown in fig. 22, the opening end of the U-shaped opening 505 faces upward, the width of the long groove 506 is matched with the short axis 5071, the tooth hook connector 507 is divided into an upper part and a lower part, the short axis 5071 is arranged on the upper part, the top pillar 5072 is arranged on the lower part, the two short axes 5071 are symmetrically arranged on the upper part of the tooth hook connector 507, the two short axes 5071 are not connected with each other, the through hole 5073 is arranged in the middle part of the tooth hook connector 507 along the transverse direction (the left and right direction), the upper part of the tooth hook connector 507 is sleeved in the sliding groove 6012, the upper horizontal inner groove wall and the lower horizontal inner groove wall of the sliding groove 6012 are respectively attached to 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 stationary in the vertical direction, and when the locking tooth 6 moves along the. The bottom of the locking tooth 6 extends out of a convex tooth part 605 towards the anti-falling lock hook 5, the outer end surface of the convex tooth part 605 inclines upwards to form a fourth working surface 604 coupled with the anti-falling lock hook 5, and a downward inclined coupling surface is correspondingly arranged on the anti-falling lock hook 5. The surface of the locking tooth 6 between the convex tooth 605 and the projection 601 is provided with a post hole 606 into which the post 5072 is inserted, and the elastic member 4 is a wire coil spring, a wave spring, a disc spring, a leaf spring, or the like.

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

The working principle of the clamping executing assembly in the embodiment is as follows: when the locking tooth 6 is close to 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, the elastic member 4 is compressed, the anti-falling locking hook moves vertically and upwards under the action of the fourth working surface 604, the short shaft 5071 moves from the upper part to the lower part of the long groove 506 (the short shaft 5071 is a fixed part, and the anti-falling locking hook 5 moves), and the upper die 1 is clamped between the third working surface 502 and the horizontal reference surface 201, as shown in fig. 23, the die clamping state is schematically illustrated. When the locking tooth 6 is away from the mounting base 2 in the horizontal direction, the top post hole 606 is gradually away from the tooth hook connector 507, so that the top post 5072 gradually extends out of the top post hole 606 (does not completely extend), the compression amount of the elastic element 4 is reduced, meanwhile, under the action of the fourth working surface 604, the anti-falling locking hook vertically moves downwards, the short shaft 5071 moves from the lower part to the upper part of the long groove 506, so that the upper die 1 is separated from the horizontal reference surface 201, as shown in fig. 24, the die release state is schematically illustrated.

Embodiment 2d, the application range of this embodiment is the same as embodiment 2c, the difference from embodiment 2e is that the connection manner of the projection 601 and the anti-falling lock hook 5 is different, as shown in fig. 25-28, in this embodiment, the upper portion 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 projection 601 passes through the long hole 508 and is coupled with the sliding hole 204. Under the thrust of the elastic element 4, the safety catch 5 is pushed against the vertical side of the mounting base 2, with only a vertical relative movement between the slot 508 and the projection 601.

The elastic member 4 may be mounted in the following manner: as shown in fig. 25, the elastic element 4 is sleeved on the circumferential outer side of the protrusion 601 and axially limited between the elongated hole 508 and the locking tooth 6. An arc top hook pad 7 is arranged between the elastic piece 4 and the anti-falling lock hook 5, and the arc top hook pad 7 is in line contact with the anti-falling lock hook.

The working principle of the clamping executing assembly in the 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 the fall prevention locking hook moves vertically upward by the fourth working surface 604, and the projection 601 is shifted from the upper portion to the lower portion of the elongated hole 508, thereby clamping the upper mold 1 between the third working surface 502 and the horizontal reference surface 201, as shown in fig. 26, which is a schematic view of the mold clamping state. When the locking tooth 6 is away from the mounting base 2 in the horizontal direction, the compression amount of the elastic member 4 is reduced, and simultaneously, the anti-falling locking hook moves vertically downward under the action of the fourth working surface 604, and the projection 601 is transferred from the lower part to the upper part of the elongated hole 508, so that the upper die 1 is separated from the horizontal reference surface 201, as shown in fig. 27, which is a schematic diagram of a die release state. Which is a schematic view showing a clamped and unclamped state of the lower mold of this embodiment,

the elastic member 4 may be attached in the following manner: a locking screw 8 is fixed on the surface of the locking tooth 6 opposite to the anti-falling locking hook 5, the elastic piece 4 is sleeved on the locking screw 8, and the elastic piece 4 is respectively abutted against the surface of the anti-falling locking hook 5 and the surface of the locking tooth 6. As shown in fig. 28, the locking screw 8 is located below the protrusion 601, two ends of the elastic member 4 abut against the surface of the anti-falling lock hook 5, a middle portion of the elastic member 4 abuts against the surface of the locking tooth 6, and the elastic member 4 may specifically be a compression spring.

From the analysis of the processing and manufacturing difficulty, the coupling surfaces of the locking tooth 6 and the anti-falling lock hook 5 in the embodiments 2c and 2d are outer surfaces, and only a plane needs to be processed on the outer surfaces of the locking tooth 6 and the anti-falling lock hook 5, while the inner surfaces (i.e. the circumferential side surfaces of the positioning groove 503) of the coupling surfaces of the locking tooth 6 and the anti-falling lock hook 5 in the embodiments 2a and 2b are more difficult to process the positioning groove 503, so that the clamping execution assemblies in the embodiments 2c and 2d are less difficult to process and manufacture than those in the embodiments 2a and 2 b; from the structural complexity analysis, the structure of the clamping execution assembly is gradually simplified from embodiment 2c to embodiment 2d (there are two embodiments in embodiment 2 d).

Embodiment 3, on the basis of embodiment 2, the locking mechanism further comprises a driving assembly adapted to drive the clamping actuator assembly closer to or farther from the mounting base. The driving assembly adopts a one-key driving mode, so that the quick loosening and clamping (one-key clamping) of the bending die (the upper die and the lower die) are realized, the situation that the traditional manual quick clamp needs to repeat hundreds of operations is avoided, the die change time is saved, the operation efficiency is improved, the labor intensity of workers is reduced, the equipment utilization rate is improved, and the basis of die change automation is laid. The driving assembly is driven by hydraulic pressure or pneumatic pressure.

The driving assembly in this embodiment adopts a split structure, which can be, but is not limited to, the following structure: as shown in fig. 2, 5, 10 and 11, the driving assembly 3 includes an eccentric shaft driving body and an eccentric shaft 3012 arranged in a vertical direction, a lower outer edge of the eccentric shaft 3012 is an eccentric working face 30121; the top of the locking tooth 6 has a first working surface 602 contacting with the eccentric working surface 30121, and 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 separate from the lateral side of the mounting base 2 through the first working surface 602. The eccentric shaft 3012 is a columnar structure, the mounting base 2 and the eccentric shaft 3012 are located on two sides of the locking tooth 6 in the horizontal direction, the eccentric working surface 30121 means that distances between points on the outer edge of the eccentric shaft 3012 on the same end surface and the center of the eccentric shaft 3012 are different, and the distances are gradually increased or gradually decreased, when the eccentric shaft 3012 rotates, the eccentric shaft 3012 and the first working surface 602 are always in contact, the central axis of the eccentric shaft 3012 is kept fixed, and the first working surface 602 can be close to or far away from the center of the eccentric shaft 3012 in the horizontal direction, so that the locking tooth 6 moves in the horizontal direction. Preferably, the farthest working end and the nearest working end of the eccentric working surface 30121, which are respectively the end of the eccentric working surface 30121 farthest from the central axis of the eccentric shaft 3012 and the end nearest to the central axis of the eccentric shaft 3012, are connected by a plane transition surface 30122. When the contact position between the first working surface 602 and the eccentric working surface 30121 is shifted from the farthest working end to the nearest working end, the eccentric shaft 3012 cannot rotate continuously due to the blocking effect of the plane transition surface 30122, thereby achieving the limiting effect.

The eccentric shaft driving body comprises a driver 3011 and an eccentric shaft driving piece 3013, the driver 3011 is arranged on the upper portion of the mounting base 2, and the driver 3011 drives the eccentric shaft driving piece 3013 to reciprocate along the vertical direction; the circumferential side of the eccentric shaft 3012 above the eccentric working surface 30121 is provided with a spiral track 30123, and the eccentric shaft driver 3013 is provided with a through hole 30131 matching with the upper part of the eccentric shaft 3012 so that the eccentric shaft driver 3013 moves along a spiral track 30123 relative to the eccentric shaft 3012. The driver 3011 is disposed along the vertical direction, and the driver 3011 may be a power device with a telescopic thrust function, such as a hydraulic cylinder, an air cylinder, a pneumatic tendon, a hydraulic expansion tube, or a pneumatic expansion tube, and when the driver is a hydraulic cylinder, an air cylinder, or a pneumatic tendon, the mounting structure of the driver is as shown in fig. 6, and when the driver is a hydraulic expansion tube or a pneumatic expansion tube, the mounting structure of the driver is as shown in fig. 12. The through hole 30131 has the same shape as the end face of the eccentric shaft 3012, and when the spiral track 30123 protrudes out of the circumferential side of the eccentric shaft 3012, the circumferential inner wall of the through hole 30131 is provided with a groove, and 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 provided with a protrusion (as shown in fig. 10).

For the structure of the driving assembly 3 described in this embodiment, as shown in fig. 1, 10 and 23, the upper portion of the mounting base 2 is provided with a driver mounting hole 205 for mounting the driver 3011, and the middle portion of the mounting base 2 is provided with a vertical movable slot 206; one end of the eccentric shaft driving part 3013 is inserted into the vertical movable slot 206, the through hole 30131 is disposed at the other end of the eccentric shaft driving part 3013, and the middle part of the eccentric shaft driving part 3013 is connected to the push rod of the driver 3011. The vertical movable slot 206 extends along the vertical direction and is used as a moving track of the eccentric shaft driving part 3013, so that the phenomenon of blocking and stopping during the moving process of the eccentric shaft driving part 3013 can be effectively avoided, the eccentric shaft driving part 3013 is blocked and arranged in the vertical movable slot 206, and particularly, the end part of the eccentric shaft driving part 3013 inserted into the vertical movable slot 206 is in a dovetail shape or a T shape.

The working principle of the embodiment is as follows: the push rod of the driver 3011 pushes the eccentric shaft driving component 3013 to move downwards (upwards) along the vertical movable slot 206, so as to drive the eccentric shaft 3012 to rotate clockwise (anticlockwise) when viewed from top to bottom, and through the action of the eccentric structure, the clamping execution component is driven to approach towards the direction of the mounting base 2 (generally to displace 3-5mm) integrally, and finally the upper die 1 is clamped; when the push rod of the driving body acts reversely, the clamping execution assembly can be far away from the mounting base 2 (generally, the displacement is 3-5mm) under the reverse action of the elastic piece 4, and finally, the clamping execution assembly stops under the limiting action of the eccentric shaft 3012; the limiting function of the eccentric shaft 3012 means that when the eccentric shaft 3012 rotates counterclockwise, the contact position of the first working surface 602 and the eccentric working surface 30121 shifts from the farthest working end to the nearest working end, and is limited at the nearest working end.

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

With the drive assembly 3 of this embodiment, fig. 6 and 7 illustrate the clamping and unclamping states of the mold when the clamping actuator assembly of embodiment 2a is used, when the mold is in the clamping state, the eccentric shaft drive 3013 is at the lowest end, the first working surface 602 contacts the farthest working end of the eccentric shaft 3012, the projection 601 extends into the sliding hole 204, and the positioning post 603 extends into the positioning slot 503. When the mold is in the unclamped state, eccentric shaft driving piece 3013 moves to the uppermost end, first working surface 602 contacts with the nearest working end of eccentric shaft 3012 while locking tooth 6 is laterally away from mounting base 2, projection 601 protrudes from slide hole 204 by a distance, point a on positioning post 603 moves horizontally to the right, the contact point of point a with positioning groove 503 moves from point B1 to point B2 as shown in fig. 8 and 9, and thus B1 moves vertically downward, that is, from the clamped state to the unclamped state, and anti-falling lock hook 5 has a vertically downward movement, thereby separating horizontal reference surface 201 from the surface of upper mold 1. Fig. 20 and 21 are schematic views showing a clamping and unclamping state of the clamping actuator assembly applied to the asymmetric mold in embodiment 2b, and fig. 29 and 30 are schematic views showing a clamping and unclamping state of the clamping actuator assembly applied to the symmetric mold in embodiment 2b, and the working principle thereof is the same as that of the clamping actuator assembly applied to embodiment 2a, and thus, the description thereof is omitted.

Embodiment 4, this embodiment is different from the structure of the driving assembly 3 of embodiment 3, in which the driving assembly 3 is an integral structure, as shown in fig. 3 and 4, and includes a driving cylinder 3021 and an extension rod 3022 obliquely arranged with respect to the central axis of the driving cylinder 3021, the extending end of the driving cylinder 3021 is connected to one end of the extension rod 3022 through a wedge surface 3023, the top of the locking tooth 6 has a first working surface 602 contacting with the other end of the extension rod 3022, and when the extension rod 3022 reciprocates, the extension rod 3022 pushes the locking tooth 6 to approach or separate 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 extends and retracts in a vertical direction, the telescopic rod 3022 extends and retracts in a horizontal direction, the telescopic rod 3022 is provided for matching, channels perpendicular to each other are provided inside the cylinder body, when the extension rod moves downward, the extension rod laterally extrudes the telescopic rod 3022 to enable the telescopic rod 3022 to gradually extend out of the cylinder body, when the extension rod moves upward, a vacuum is formed below the extension rod, and simultaneously, the outer end of the extension rod is acted by the restoring force of the elastic member 4, and the extension rod gradually moves inside the cylinder body under the action of the pressure difference between the two ends. For embodiment 2b, the upper portion of the mounting base 2 is provided with a driver mounting hole 205 for mounting the driving assembly 3.

The mounting base 2 of the present invention has three main structures: the structure I is as follows: the clamping device is used for an asymmetric mould and only has a single-side clamping function. As shown in fig. 13, the upper portion of the mounting base 2 is extended along one end in the lateral direction, and the extended portion is used for mounting the driver 3011 or the driving unit 3, and since the center of force of the asymmetric type die is located on one side of the upper die clamping portion 101, the horizontal reference surface 201 is located below one side of the vertical reference surface 202, and at this time, the upper die 1 cannot be mounted reversely. The structure II is as follows: the double-side clamping device is used for an asymmetric mould and has a double-side clamping function. As shown in fig. 14, the upper portion of the mounting base 2 extends out along both lateral sides, the upper mold 1 can be mounted on both lateral sides of the mounting base 2, and the upper mold 1 shares the same horizontal reference plane 201 when being mounted in the forward direction and when being mounted in the reverse direction. The structure is three: the double-side clamping device is used for symmetrical molds and has a double-side clamping function. As shown in fig. 15, the upper portion of the mounting base 2 is protruded in one end in the lateral direction, and since the center of force of the symmetrical mold is located at the center of the upper mold clamping portion 101, the horizontal reference surface 201 is located above one side of the vertical reference surface 202, and the upper mold 1 can be mounted in the reverse direction.

The utility model provides a mould rapid clamping system bends, includes mould 1 and above locking mechanism, the horizontal one side or both sides of last mould clamping portion 101 of last mould 1 are provided with prevent weighing down the groove 103, third working face 502 and the internal surface contact who prevents weighing down the groove 103. When unloading the mold manually, there is no need for a finger to press a button on the mold and can concentrate on unloading the mold itself. For an asymmetric mold, the anti-falling groove 103 is arranged on one side of the upper mold clamping part 101, and the anti-falling groove 103 and the stress center of the mold are respectively positioned on two sides of the upper mold clamping part 101; for a symmetrical mold, the anti-falling grooves 103 can be respectively arranged on two side surfaces of the upper mold clamping part 101, and forward and reverse installation can be realized.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A locking mechanism, characterized by: the die clamping device comprises a mounting base and one or more groups of clamping executing components which are arranged on one or two transverse sides of the mounting base along the longitudinal direction, wherein a die is clamped between the clamping executing components and the mounting base, and the clamping executing components are close to or far away from the mounting base along a plane vertical to the longitudinal direction; and the number of the first and second groups,

the adjacent clamping executing components are arranged closely.

2. The latch mechanism of claim 1, wherein: the top of the mounting base is provided with a horizontal mounting surface which is in contact with the bending machine, and the bottom of the mounting base is provided with a vertical reference surface and a horizontal reference surface for positioning the upper die; the reverse acting force applied to the upper die cutter head points to the horizontal datum plane;

the clamping executing assembly is provided with a second working surface which is matched with the vertical reference surface to clamp the upper die clamping part and a third working surface which upwards pushes and presses the upper die clamping part.

3. The latch mechanism of claim 2, wherein: the clamping execution assembly comprises a locking tooth and an anti-falling lock hook, and the second working surface and the third working surface are positioned on the anti-falling lock hook;

the locking teeth are provided with fourth working surfaces coupled with the anti-falling lock hook, and the fourth working surfaces and the movement direction of the locking teeth have a certain inclination angle, so that the anti-falling lock hook can simultaneously generate movement in the horizontal direction and the vertical direction relative to the mounting base.

4. The latch mechanism of claim 3, wherein: the lateral side of the mounting base is provided with a sliding hole, the locking tooth is provided with a convex block which is suitable for being inserted into the sliding hole, and the locking tooth is close to or far away from the lateral side of the mounting base along the extending direction of the convex block.

5. The latch mechanism of claim 4, wherein: the convex block extends along the horizontal direction, and the included angle between the fourth working surface and the extending direction of the convex block is 30-60 degrees.

6. The locking mechanism of claim 5, wherein: the locking execution assembly further comprises an elastic body positioned between the anti-falling lock hook and the locking tooth; the elastic piece is suitable for extruding the anti-falling lock hook and applies acting force towards the vertical reference surface to the upper die clamping part through the anti-falling lock hook.

7. The latch mechanism of claim 6, wherein: a positioning column extends from the bottom of the locking tooth in an oblique downward direction, the fourth working surface is the circumferential surface of the positioning column, and a positioning groove coupled with the positioning column is formed in one end, far away from the upper die clamping part, of the anti-falling locking hook; the elastic piece is sleeved on the circumferential surface of the positioning column.

8. The latch mechanism of claim 6, wherein: the fourth working surface is an inclined surface, and the coupling surface and the third working surface of the anti-falling lock hook are respectively positioned on two sides of the anti-falling lock hook; the coupling surface of the anti-falling lock hook corresponds to a working surface coupled with the fourth working surface on the anti-falling lock hook;

the telescopic direction of the elastic piece is parallel to the extending direction of the convex block.

9. The latch mechanism of claim 8, wherein: the top of the anti-falling lock hook is provided with a U-shaped opening, and the inner side walls of two sides of the U-shaped opening are provided with vertically arranged long grooves;

a tooth hook connector is connected between the anti-falling lock hook and the locking tooth, and a short shaft suitable for being inserted into the long-shaped groove and a top column suitable for being sleeved with the elastic piece are arranged on the tooth hook connector; the middle part of the lug is provided with a sliding groove; when the elastic piece stretches, the tooth hook connecting body reciprocates in the sliding groove along the direction parallel to the extending direction of the bump, and the short shaft vertically reciprocates in the long groove.

10. The latch mechanism of claim 8, wherein: the upper part of the anti-falling lock hook is provided with a long hole, and the lug passes through the long hole and is coupled with the sliding hole; the elastic piece is axially limited between the anti-falling lock hook and the locking tooth.

11. The locking mechanism of claim 10, wherein: the elastic piece is sleeved on the circumferential outer side of the lug and axially limited between the strip hole and the locking teeth.

12. The locking mechanism of claim 10, wherein: and the surface of the locking tooth, which is opposite to the anti-falling lock hook, is fixed with a locking screw, the elastic piece is sleeved on the locking screw, and the elastic piece is respectively abutted against the surface of the anti-falling lock hook and the surface of the locking tooth.

13. A locking mechanism according to any one of claims 3 to 12, wherein: the locking mechanism further includes a drive assembly adapted to drive the clamp actuation assembly toward or away from the mounting base.

14. The latch mechanism of claim 13, wherein: the driving assembly is driven by hydraulic pressure or pneumatic pressure.

15. The latch mechanism of claim 13, wherein: the driving assembly comprises a driving oil cylinder and a telescopic rod obliquely arranged with a central shaft of the driving oil cylinder, the extending end of the driving oil cylinder is connected with one end of the telescopic rod through a wedge surface, the top of the locking tooth is provided with a first working surface contacted with the other end of the telescopic rod, and when the telescopic rod makes reciprocating motion, the telescopic rod pushes through the first working surface to enable the locking tooth to be close to or far away from the transverse side surface of the mounting base.

16. The latch mechanism of claim 13, wherein: the driving assembly comprises an eccentric shaft driving body and an eccentric shaft arranged along the vertical direction, and the outer edge of the lower part of the eccentric shaft is an eccentric working surface; the top of the locking tooth is provided with 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 be close to or far away from the transverse side surface of the mounting base through the first working surface.

17. The latch mechanism of claim 16, wherein: the eccentric shaft driving body comprises a driver and an eccentric shaft driving part, the driver is arranged at the upper part of the mounting base, and the driver drives the eccentric shaft driving part to reciprocate along the vertical direction;

the circumferential side surface of the eccentric shaft above the eccentric working surface is provided with a spiral track, and the eccentric shaft driving part is provided with a through hole matched with the upper part of the eccentric shaft, so that the eccentric shaft driving part moves along the spiral track relative to the eccentric shaft.

18. The latch mechanism of claim 17, wherein: the upper part of the mounting base is provided with a driver mounting hole, and the middle part of the mounting base is provided with a vertical movable groove; one end of the eccentric shaft driving part is inserted into the vertical movable groove, the through hole is formed in the other end of the eccentric shaft driving part, and the middle of the eccentric shaft driving part is connected with the push rod of the driver.

19. The utility model provides a mould rapid clamping system bends which characterized in that: comprising an upper tool and a locking mechanism according to any one of claims 14-18, wherein one or both lateral sides of the upper tool clamping portion of the upper tool is provided with an anti-falling groove, and the third working surface is in contact with the inner surface of the anti-falling groove.