Intelligent stamping die with die head convenient to replace

Abstract

The invention discloses an intelligent stamping die with a die head convenient to replace, and relates to the technical field of stamping dies. The position adjusting assembly is provided with two position adjusting ends which are used for adjusting the locking assembly respectively; the male die comprises a male die seat, and the male die seat can be movably arranged on the mounting bin relative to the female die through a limiting rod; the two limiting strips are symmetrically arranged and fixed to the male die base, and the sides, close to each other, of the two limiting strips are each provided with a stepped groove and a first arc-shaped groove; step insertion strips corresponding to the step grooves are integrally formed on the limiting seat, and the limiting seat is used for being inserted between the two limiting strips; a second arc-shaped groove corresponding to the first arc-shaped groove is formed in the limiting seat, and the first arc-shaped groove and the second arc-shaped groove form a cylindrical groove used for containing a locking assembly; and a stamping head corresponding to the male die is fixed on the limiting seat and can be quickly replaced along with the limiting seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping dies, in particular to an intelligent stamping die facilitating replacement of die heads. BACKGROUND

[0002] A stamping die is a core equipment for plastic forming of metal plates in manufacturing industry, and is widely used in the fields of automobile parts, electronic appliances, precision instruments, etc. In the stamping process, a stamping head, as a key component directly contacting workpieces and applying pressure, needs to withstand high-frequency severe impact, high-strength friction and alternating stress for a long time.

[0003] Therefore, the stamping head is a consumable part, which is prone to wear or surface fatigue damage in continuous production operation. Once the precision of the stamping head is reduced or damaged, it will directly lead to size out-of-tolerance, burr increase or even scrap of the stamped product. In order to ensure product quality and production yield, the operator must periodically replace, grind or reassemble the worn or failed stamping head.

[0004] However, in the prior art, the connection between the stamping head and the male die seat is mostly achieved by traditional bolt fastening. When replacing, a wrench or other tool is needed to loosen the bolts one by one, and after replacing the die head, the alignment and tightening are re-performed. This disassembly and assembly method is tedious and time-consuming. In addition, the existing die structure often lacks a dedicated auxiliary handling mechanism, so that the operator has difficulty in smoothly taking out the stamping head assembly from the die bin after disassembly, or accurately aligning during installation, which not only increases the labor intensity of the operator, but also has the risk of damaging the workpiece or the die, and lacks monitoring of the locking state.

[0005] Therefore, it is necessary to provide an intelligent stamping die facilitating replacement of die heads to solve the above problems. SUMMARY

[0006] To solve the above problems, the present application provides the following technical scheme: an intelligent stamping die facilitating replacement of die heads, comprising: a mounting bin, a female die being fixed thereon; a position adjusting assembly having two position adjusting ends for adjusting the locking assembly respectively; a male die, the male die comprising: a male die seat movably arranged on the mounting bin relative to the female die through a limiting rod; two limiting strips symmetrically arranged and fixed on the male die seat, the two limiting strips each having a stepped slot and a first arc-shaped slot formed on a side close to each other; a limiting seat, the limiting seat integrally having a stepped inserting strip corresponding to the stepped slot, for being inserted between the two limiting strips; Horizontal fixed on the punch seat and between the two limit bars; The limit seat is provided with a second arc-shaped slot corresponding to the first arc-shaped slot, and the first arc-shaped slot and the second arc-shaped slot form a cylindrical slot for accommodating the locking assembly. The limit seat is provided with a second arc-shaped slot corresponding to the first arc-shaped slot, and the first arc-shaped slot and the second arc-shaped slot form a cylindrical slot for accommodating the locking assembly.

[0007] Further, as preferred, the bottom of the second arc-shaped slot is provided with a square limit slot; The locking assembly comprises: An outer cylinder having a plug corresponding to the limit slot at the bottom; A bolt fixed to the bottom of the inner cylinder of the outer cylinder; A second taper seat having a threaded groove at the bottom for threaded connection with the bolt; A plurality of second wedge blocks distributed in a circumferential interval, radially sliding through the outer cylinder and abutting against the second taper seat.

[0008] Further, as preferred, the second taper seat is connected with a first taper seat through a connecting rod, the outer surface of the first taper seat is distributed with a plurality of first wedge blocks distributed in a circumferential interval, and the first wedge blocks radially slide through the outer cylinder and abut against the first taper seat.

[0009] Further, as preferred, the upper surface of the first taper seat is provided with a clamping groove, and the position adjusting end is a follower rod, the bottom of the follower rod is fixed with a clamping head corresponding to the clamping groove.

[0010] Further, as preferred, the second wedge block and the first wedge block are both made of magnetic material, and a magnetic block is embedded in each of the first taper seat and the second taper seat.

[0011] Further, as preferred, the outer part of the follower rod is fixed with a ring, and the outer diameter of the ring is equal to the inner diameter of the outer cylinder.

[0012] Further, as preferred, a temperature sensor is embedded in the ring.

[0013] Further, as preferred, the position adjusting assembly comprises: A base fixed on the mounting bin; Two mounting plates arranged symmetrically, connected by a guide rod between the two mounting plates, and the lower mounting plate is fixed on the base; A guide seat vertically sliding on the guide rod and driven by an extension rod; An adjuster fixed at the bottom of the guide seat and having two horizontally adjustable output ends, the output ends are fixed with adjusting rods, and the adjusting rods comprise a motor and the position adjusting end fixed below the motor.

[0014] Further, as preferred, the limiting rod is driven by a punch driving assembly, which comprises: a telescopic cylinder hinged to the mounting bin, and the telescopic ends of the telescopic cylinder are respectively hinged to the fixed rod and the movable rod; one end of the fixed rod is hinged to the mounting bin; a sliding plate hinged to the movable rod and connected to the limiting rod.

[0015] Compared with the prior art, the present application provides an intelligent punch die convenient for replacing the die head, which has the following beneficial effects: In the present application, the stepped plug on the limiting seat and the stepped groove on the limiting strip are inserted and matched to realize the rapid positioning and initial fixing of the punch head; at the same time, by driving the first and second taper seats to rotate, cooperating with the threaded connection between the second taper seat and the bolt, the first and second wedge blocks distributed in the circumferential direction are forced to expand synchronously in the radial direction, forming a double-layer high-strength mechanical clamping, replacing the traditional cumbersome bolt fixing, which not only ensures the stability of the connection, but also greatly shortens the die replacement time.

[0016] In the present application, the follow-up rod is reused as a dismounting handle, an annular member with an outer diameter equal to the inner diameter of the outer cylinder is arranged outside the follow-up rod, a lateral extrusion force is applied to the two follow-up rods in opposite directions during transportation, the annular member is forced to press tightly against the inner wall of the outer cylinder, and the locking assembly and the limiting seat are lifted by using the huge static friction force generated between the two, so as to facilitate subsequent replacement.

[0017] In the present application, a temperature sensor embedded in the annular member is used to regularly monitor the temperature inside the outer cylinder, when the locking assembly is loosened due to vibration, causing the wedge blocks (first and second wedge blocks) and the taper seats (first and second taper seats) to produce friction and abnormally heat, the position adjusting assembly drives the follow-up rod to rotate, further forcing the wedge blocks to move radially outward to compensate the locking force, effectively preventing loosening accidents, and improving the intelligence and safety of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic diagram of the intelligent punch die convenient for replacing the die head; Figure 2 It is a three-dimensional structure schematic diagram of the intelligent punch die convenient for replacing the die head; Figure 3 It is a sectional structure schematic diagram of the intelligent punch die convenient for replacing the die head; Figure 4 It is a three-dimensional structure schematic diagram of the punch; Figure 5 It is a sectional structure schematic diagram of the punch; Figure 6 It is a three-dimensional structure schematic diagram of the position adjusting assembly; Figure 7 Sectional view structure schematic diagram of adjusting rod and locking assembly; Figure 8 Sectional view structure schematic diagram of locking assembly; In the figure: 1, mounting bin; 2, concave die; 3, convex die; 31, convex die seat; 32, limiting strip; 321, stepped groove; 322, first arc-shaped groove; 33, limiting seat; 331, second arc-shaped groove; 332, limiting groove; 34, stamping head; 4, limiting rod; 5, position adjusting assembly; 51, base; 52, guide rod; 53, telescopic rod; 54, guide seat; 55, mounting plate; 551, accommodation groove; 56, adjuster; 57, adjusting rod; 571, motor; 572, follower rod; 573, clamp; 574, ring; 6, locking assembly; 61, outer cylinder; 62, first wedge; 63, first taper seat; 631, clamping groove; 64, connecting rod; 65, second wedge; 66, second taper seat; 67, bolt; 68, plug; 7, stamping driving assembly; 71, telescopic cylinder; 72, fixed rod; 73, movable rod; 74, sliding plate. DETAILED DESCRIPTION

[0019] The terms "first", "second", and the like in the description and claims of the present application and in the above summary of the application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are, for brevity, described in a certain sequence or order. Furthermore, the terms "comprise", "comprising", "include", "including", and the like are used in the sense of "including but not limited to". The term "coupled" as used herein is intended to mean connected, although not necessarily directly, and / or communicating, although not necessarily directly.

[0020] Embodiment: In the embodiment of the present application, please refer to Figures 1-8 , which provides an intelligent stamping die facilitating replacement of die head, comprising: A mounting bin 1, on which a concave die 2 is fixed; A position adjusting assembly 5 having two position adjusting ends for adjusting the locking assembly 6 respectively; A convex die 3, the convex die 3 comprising: A convex die seat 31 movably arranged on the mounting bin 1 relative to the concave die 2 through a limiting rod 4; Two limiting strips 32 symmetrically arranged and fixed on the convex die seat 31, both of the limiting strips 32 are provided with a stepped groove 321 and a first arc-shaped groove 322 on the side close to each other; A limiting seat 33 is provided with a stepped plug on the corresponding stepped slot 321, which is inserted between the two limiting bars 32; A horizontal bar is fixed on the convex die seat 31 and located between the two limiting bars 32; The limiting seat 33 is provided with a second arc-shaped slot 331 corresponding to the first arc-shaped slot 322, which forms a cylindrical slot for accommodating the locking assembly 6. The limiting seat 33 is provided with a second arc-shaped slot 331 corresponding to the first arc-shaped slot 322, which forms a cylindrical slot for accommodating the locking assembly 6.

[0021] On the convex die seat 31, two symmetrical limiting bars 32 are fixed, which form an installation space between them. The limiting seat 33 is inserted into the limiting bar 32 through the stepped plug formed integrally thereon. This structure uses the principle of shape locking to achieve quick installation. The horizontal bar is fixed on the convex die seat 31 and located between the two limiting bars 32, which further serves as a lower limit.

[0022] More importantly, the first arc-shaped slot 322 and the second arc-shaped slot 331 are respectively provided on the contact surface of the limiting bar 32 and the limiting seat 33. When the limiting seat 33 is inserted between the two limiting bars 32, the first arc-shaped slot 322 and the second arc-shaped slot 331 together form a complete cylindrical slot. The cylindrical slot is used to accommodate the locking assembly 6, so that the locking assembly 6 can be used to lock the limiting seat 33. The stamping head 34 is fixed on the limiting seat 33. Therefore, when the stamping head 34 needs to be replaced, the connection and separation of the limiting seat 33 and the convex die seat 31 can be achieved by controlling the state of the locking assembly 6.

[0023] In addition, the position adjusting assembly 5 as an external driving source has two position adjusting ends, which can respectively adjust the corresponding locking assembly 6, and further control the locking or loosening action of the locking assembly 6 in the cylindrical slot.

[0024] That is, in this embodiment, the stepped slot 321 on the limiting bar 32 and the stepped plug on the limiting seat 33 are inserted and matched, and the accommodation space formed by the first arc-shaped slot 322 and the second arc-shaped slot 331, so that the stamping head 34 can be quickly positioned and installed on the convex die seat 31 through the limiting seat 33. This structure design discards the traditional complex bolt fastening method, and only needs to control the locking assembly 6 through the position adjusting assembly 5 to achieve quick disassembly and assembly.

[0025] In this embodiment, the bottom of the second arc-shaped slot 331 is provided with a square limiting slot 332; The locking assembly 6 comprises: The outer cylinder 61 has a bottom with a plug 68 corresponding to the limiting slot 332; The bolt 67 is fixed to the inner cylinder bottom of the outer cylinder 61; The second taper seat 66 has a threaded groove at the bottom for threaded connection with the bolt 67; A plurality of second wedge blocks 65 are distributed in a circumferential interval, radially sliding through the outer cylinder 61 and abutting against the second taper seat 66.

[0026] Specifically, the locking assembly 6 is embedded in the limiting slot 332 through the plug 68 at the bottom of the outer cylinder 61, and since the limiting slot 332 is a square structure, the plug 68 can form circumferential limiting for the outer cylinder 61 after cooperation, preventing the outer cylinder 61 from rotating under stress.

[0027] The bottom of the second taper seat 66 is provided with a threaded groove, which is in threaded cooperation with the bolt 67. When the second taper seat 66 is driven to rotate around its axis, the second taper seat 66 will move up and down along the axial direction of the bolt 67 since the bolt 67 is fixed. A plurality of second wedge blocks 65 are distributed in a circumferential interval and radially slide through the wall of the outer cylinder 61, and the inner side directly abuts against the taper surface of the second taper seat 66. Therefore, when the second taper seat 66 moves downward, the taper surface will extrude the second wedge block 65. Since the outer cylinder 61 is limited, the second wedge block 65 cannot move axially, but can only be forced to slide radially outward. This radial expansion movement makes the outer surface of the second wedge block 65 tightly press against the outside, thereby achieving strong holding force. Conversely, when the second taper seat 66 reversely rotates and moves upward along the axial direction, the extrusion force on the second wedge block 65 is released, and the locking assembly is loosened.

[0028] Further, the second taper seat 66 is connected with the first taper seat 63 through the connecting rod 64, and the outer surface of the first taper seat 63 is distributed with a plurality of first wedge blocks 62 distributed in a circumferential interval, which radially slide through the outer cylinder 61 and abut against the first taper seat 63.

[0029] The upper surface of the first taper seat 63 is provided with a clamping groove 631, and the position adjusting end is a follower rod 572, and the bottom of the follower rod 572 is fixed with a clamping head 573 corresponding to the clamping groove 631.

[0030] The second taper seat 66 and the first taper seat 63 are rigidly connected through the connecting rod 64, ensuring that they remain synchronous during movement. When the locking assembly 6 needs to be operated externally, the position adjusting end is specifically the follower rod 572, and the clamping head 573 at the bottom of the follower rod 572 is in shape cooperation with the clamping groove 631 on the upper surface of the first taper seat 63, forming an embedded relationship capable of transmitting torque.

[0031] When in operation, the external power device drives the follower rod 572 to rotate. Since the clamping head 573 is embedded in the clamping groove 631, the rotating torque is directly transmitted to the first taper seat 63, which in turn drives the second taper seat 66 to rotate synchronously through the connecting rod 64. Under the action of the threaded transmission, this rotating motion forces the first taper seat 63 and the second taper seat 66 to move axially. With the axial movement of the first taper seat 63, the taper of its outer circumferential surface extrudes the first wedge block 62 in contact with it, which is limited by the outer cylinder 61 and can only be forced to slide radially outward and expand.

[0032] Since the first wedge block 62 and the second wedge block 65 correspond to the first taper seat 63 and the second taper seat 66 respectively, this structure actually constitutes a double-layer synchronous locking system, greatly enhancing the reliability of the locking.

[0033] Further, the second wedge block 65 and the first wedge block 62 are both magnetic materials, and the first taper seat 63 and the second taper seat 66 are both embedded with magnetic blocks.

[0034] In this embodiment, the first wedge block 62 and the second wedge block 65 are made of magnetic materials such as iron, cobalt, nickel and their alloys; and the first taper seat 63 and the second taper seat 66 are embedded with magnetic blocks such as neodymium-iron-boron strong magnets. When the position adjusting assembly 5 drives the taper seat to rotate and axially retreat, releasing the mechanical extrusion on the wedge block, the magnetic blocks in the taper seat interact with the wedge block. The magnetic attraction overcomes the sliding friction between the wedge block and the outer cylinder 61, driving the first wedge block 62 and the second wedge block 65 to slide radially inward, so that they automatically retract and tightly fit on the taper surface of the taper seat.

[0035] It is worth mentioning that this arrangement also enables the clamping head 573 to be adsorbed with the clamping groove 631.

[0036] In this embodiment, the follower rod 572 is externally fixed with a ring 574, and the outer diameter of the ring 574 is equal to the inner diameter of the outer cylinder 61.

[0037] When it is necessary to take out the limiting seat 33, the operator applies opposite forces to the two follower rods 572, causing the two follower rods 572 to approach each other. When the follower rods 572 are laterally extruded, the outer surface of the ring 574 is tightly pressed against the inner wall of the outer cylinder 61, and the static friction between the ring 574 and the outer cylinder 61 temporarily connects the follower rods 572 and the outer cylinder 61 as a whole. In view of the fitting relationship between the outer cylinder 61 and the limiting seat 33, the operator only needs to pull the follower rods 572 upward, which can drive the limiting seat 33 to overcome the gravitational force and the installation resistance, and take it out of the mold; conversely, the ring 574 returns to its original state, the friction disappears, and the follower rods 572 can be pulled out.

[0038] The structure reuses the existing follow-up rod 572 as an operating handle, and does not introduce additional complex disassembly mechanisms, reflecting the structural integration.

[0039] Furthermore, the ring member 574 is embedded with a temperature sensor.

[0040] The ring member 574 serves as a carrier for the temperature sensor, and extends into the outer cylinder 61 together with the follow-up rod 572. During the stamping operation, if the locking assembly 6 is slightly loose, the relative displacement (i.e. micro-motion friction) between the moving parts will occur under high-frequency vibration. This abnormal friction will quickly generate a large amount of heat, causing the temperature inside the outer cylinder 61 to rise. The temperature sensor can monitor this temperature change. When the monitored temperature value exceeds the preset safety threshold, it is determined that the locking force is insufficient. Subsequently, the position adjusting assembly 5 drives the follow-up rod 572 to exert further adjusting action on the first taper seat 63, forcing the second wedge block 65 and the first wedge block 62 to further expand radially, thereby achieving automatic compensation of the locking force.

[0041] In this embodiment, the position adjusting assembly 5 includes: a base 51 fixed to the mounting bin 1; two symmetrically arranged mounting plates 55 connected by a guide rod 52, with the lower mounting plate 55 fixed to the base 51; a guide seat 54 vertically slidingly arranged on the guide rod 52 and driven by an extension rod 53; an adjuster 56 fixed to the bottom of the guide seat 54, having two horizontally adjustable output ends, the output ends being fixed with adjusting rods 57, the adjusting rods 57 including a motor 571 and a position adjusting end fixed below the motor 571.

[0042] The extension rod 53, for example, can be any one of a hydraulic extension cylinder, a pneumatic cylinder or an electric push rod, for providing vertical driving force.

[0043] The adjuster 56 is fixedly installed at the bottom of the guide seat 54, and serves as a horizontal driving source. The adjuster 56, for example, can be a lead screw module driven by a servo motor, a finger cylinder or a double-acting hydraulic cylinder. The two output ends are respectively fixed with adjusting rods 57. The adjusting rod 57 is composed of a motor 571 and a position adjusting end below it. After the guide seat 54 is lowered into position, the adjuster 56 is activated to drive the two output ends to perform horizontal adjusting movement.

[0044] In this embodiment, the limiting rod 4 is driven by a stamping driving assembly 7, which includes: The telescopic cylinder 71 is hinged to the installation bin 1, and the telescopic ends of the telescopic cylinder 71 are respectively hinged to the fixed rod 72 and the movable rod 73; One end of the fixed rod 72 is hinged to the installation bin 1; The sliding plate 74 is hinged to the movable rod 73 and connected to the limiting rod 4.

[0045] The telescopic cylinder 71 is the power source of the whole assembly, and the body thereof is hinged to the installation bin 1, so as to allow the telescopic cylinder 71 to slightly swing in angle during the working process to adapt to the movement track of the connecting rod. In actual application, the telescopic cylinder 71 may be any one of a hydraulic telescopic cylinder, a pneumatic cylinder or an electric push rod.

[0046] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An intelligent stamping die with an easily replaceable die head, characterized in that, include: The mounting chamber (1) has a die (2) fixed on it; The position adjustment assembly (5) has two position adjustment ends for adjusting the locking assembly (6) respectively; Punch (3), the punch (3) comprising: The punch seat (31) is movably disposed on the mounting chamber (1) relative to the die (2) by means of the limiting rod (4); Two symmetrically arranged limiting strips (32) are fixed to the punch seat (31). Each of the two limiting strips (32) has a stepped groove (321) and a first arc groove (322) on the side that is close to each other. The limiting seat (33) has a stepped insert corresponding to the stepped groove (321) integrally formed on it, for insertion between the two limiting strips (32); A horizontal bar is fixed horizontally on the punch seat (31) and located between the two limiting bars (32); The limiting seat (33) is provided with a second arc groove (331) corresponding to the first arc groove (322). The first arc groove (322) and the second arc groove (331) form a cylindrical groove for accommodating the locking assembly (6). The limiting seat (33) is fixed with a punch head (34) corresponding to the punch (3).

2. The intelligent stamping die with an easily replaceable die head as described in claim 1, characterized in that, The bottom of the second arc-shaped groove (331) is provided with a square limiting groove (332); The locking assembly (6) includes: The outer cylinder (61) has a plug (68) at the bottom corresponding to the limiting groove (332); Bolts (67) are fixed to the bottom of the inner cylinder of the outer cylinder (61); The second cone seat (66) has a threaded groove at the bottom for threaded connection with the bolt (67); Multiple second wedges (65) arranged circumferentially are slidably inserted into the outer cylinder (61) and abut against the second cone seat (66).

3. The intelligent stamping die with an easily replaceable die head according to claim 2, characterized in that, The second cone seat (66) is connected to the first cone seat (63) via a connecting rod (64). The outer surface of the first cone seat (63) is provided with a plurality of first wedges (62) distributed in a circumferentially spaced manner. The first wedges (62) slide radially through the outer cylinder (61) and abut against the first cone seat (63).

4. The intelligent stamping die with an easily replaceable die head as described in claim 3, characterized in that, The upper surface of the first cone seat (63) is provided with a slot (631), the position adjustment end is a follower rod (572), and the bottom of the follower rod (572) is fixed with a clip (573) corresponding to the slot (631).

5. The intelligent stamping die with an easily replaceable die head as described in claim 3, characterized in that, The second wedge (65) and the first wedge (62) are both made of magnetic material, and magnetic blocks are embedded in the first cone (63) and the second cone (66).

6. The intelligent stamping die with an easily replaceable die head according to claim 4, characterized in that, The follower rod (572) is fixed with a ring (574) on the outside, and the outer diameter of the ring (574) is equal to the inner diameter of the outer cylinder (61).

7. The intelligent stamping die with an easily replaceable die head as described in claim 6, characterized in that, A temperature sensor is embedded in the ring (574).

8. The intelligent stamping die with an easily replaceable die head according to claim 1, characterized in that, The position adjustment component (5) includes: The base (51) is fixed to the mounting compartment (1); Two symmetrically arranged mounting plates (55) are connected by a guide rod (52), and the mounting plate (55) located on the lower side is fixed on the base (51); The guide seat (54) is vertically slidably mounted on the guide rod (52) and driven by the telescopic rod (53); The regulator (56) is fixed to the bottom of the guide seat (54) and has two horizontal adjustment output ends. The output ends are fixed with adjustment rods (57). The adjustment rods (57) include a motor (571) and the position adjustment end fixed below the motor (571).

9. The intelligent stamping die with an easily replaceable die head according to claim 1, characterized in that, The limiting rod (4) is driven by a stamping drive assembly (7), which includes: Telescopic cylinder (71) is hinged to the mounting chamber (1), and the telescopic end of the telescopic cylinder (71) is hinged to the fixed rod (72) and the moving rod (73) respectively; One end of the fixed rod (72) is hinged to the mounting chamber (1); The sliding plate (74) is hinged to the moving rod (73) and connected to the limiting rod (4).

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