Improved stamping die equipment

Abstract

The utility model discloses improved stamping die equipment. The improved stamping die equipment is improved aiming at the problems that a traditional die is tedious in die replacement, low in positioning accuracy and prone to deviation in long-term operation. The equipment adopts a mold locking positioning mechanism to realize rapid and accurate positioning of the upper mold; a dynamic adjusting guide mechanism is arranged, and a fine thread pair is matched with the vertical sliding groove, so that the clearance of the sliding groove can be finely adjusted and compensated online. The integrated positioning damping column and the elastic buffer sleeve form a multi-stage damping system, and a photoelectric sensing switch is arranged to monitor the position of the formwork in real time. According to the design, the die changing process is simplified, the positioning precision and the anti-vibration stability are improved, blanking gap deviation is effectively avoided, the size precision and the yield of finished products are remarkably improved, and the die is suitable for high-precision stamping machining scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile parts processing technical field, concretely is an improved stamping die equipment. BACKGROUND

[0002] Automobile parts are each unit of constituting automobile whole and a kind of product serving automobile, and the types of automobile parts are various, with the improvement of people's consumption level, in recent years, automobile parts industry develops rapidly, in the automobile parts processing process, stamping is one of commonly used processes, for realizing the punching, bending, forming and other processes of parts.

[0003] The patent literature of prior art patent number CN202223281239.X provides a kind of automobile parts multifunctional stamping die, the patent includes fixed base, the bottom of the fixed base is welded with fixed foot, the top of the fixed base is fixedly connected with support frame, the top of the support frame is fixedly connected with hydraulic cylinder, and the one end of hydraulic cylinder is provided with fixed assembly, the top of the fixed base is bolted with lower module, and the top of lower module is provided with buffer assembly.The automobile parts multifunctional stamping die is provided with limiting block, limiting rod, sleeve, sliding block, fixed spring, damper and rubber pad, provided with rubber pad can avoid the direct contact of limiting block and sleeve, avoid the damage caused by the direct contact of limiting block and sleeve, provided with fixed spring and damper can reduce the impact force of upper module to lower module, avoid the damage of die caused by excessive impact force of upper module to lower module, make people more reassured, but when being used, since the patent is when disassembling upper die, still adopt traditional bolt connection mode, this mode is not only cumbersome, time-consuming and laborious.And, traditional stamping die equipment has the defect of insufficient die frame positioning precision, especially in long-term high-frequency operation, upper and lower stamping dies are prone to slight displacement due to vibration or uneven stress, leading to blanking gap deviation, directly affecting finished product size precision and yield. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an improved stamping die equipment, which can completely solve the technical problems of the prior art.

[0005] The utility model provides the following technical scheme:

[0006] An improved stamping die equipment, comprising a device frame, a hydraulic drive telescopic actuator is arranged on the top of the device frame, an upper stamping die and a lower stamping die are arranged in the device frame, and the movable end of the hydraulic drive telescopic actuator is connected with the upper stamping die through a die locking positioning mechanism.

[0007] The mold positioning mechanism comprises a connecting block, a top surface of the connecting block is detachably connected with a movable end of a hydraulic drive telescopic actuator, an installation cavity is formed in the connecting block, a rack is correspondingly and slidably arranged at the top and bottom of the installation cavity, the two racks are connected with horizontal locking bolts at their apart ends, the horizontal locking bolts extend out of the connecting block, a transmission gear is engaged between the two racks, the transmission gear is fixedly installed on a transmission rod, the transmission rod is rotatably connected with the connecting block through a bearing, one end of the transmission rod extends to the inner wall of the installation cavity, the other end of the transmission rod extends out of the connecting block and is provided with a first adjusting hand wheel, two auxiliary positioning bolts are fixedly installed on the bottom surface of the connecting block;

[0008] A connecting groove matched with the connecting block is formed in the top surface of the upper stamping die, an auxiliary positioning hole matched with the auxiliary positioning bolt is formed in the bottom of the connecting groove, and a horizontal positioning hole matched with the horizontal locking bolt is formed in the side wall of the connecting groove.

[0009] Dynamic adjusting guide mechanisms connected with the upper stamping die are arranged on the left and right sides of the equipment frame.

[0010] Further, horizontal sliding grooves are correspondingly arranged at the top and bottom of the installation cavity, and the rack is slidably matched with the horizontal sliding grooves.

[0011] Further, the transmission gear and the rack are made of carburized and quenched steel.

[0012] Further, positioning shock-absorbing columns are correspondingly arranged at the four corners of the bottom of the upper stamping die, and a buffer sleeve matched with the positioning shock-absorbing columns is correspondingly arranged at the top of the lower stamping die, and an elastic buffer is arranged in the buffer sleeve.

[0013] Further, the dynamic adjusting guide mechanism comprises a threaded shaft and an internally-threaded sleeve, vertical sliding grooves are correspondingly formed in the left and right sides of the equipment frame, the internally-threaded sleeve is slidably matched with the vertical sliding grooves, the threaded shaft is threadedly connected with the internally-threaded sleeve, an insertion hole matched with the threaded shaft is formed in the side wall of the upper stamping die, one end of the threaded shaft is inserted into the insertion hole, and the other end of the threaded shaft is provided with a second adjusting hand wheel.

[0014] Further, an insertion sleeve is threadedly connected with the end of the threaded shaft.

[0015] Further, the thread of the threaded shaft and the internally-threaded sleeve is a fine thread, and the friction angle is greater than the spiral angle.

[0016] Further, a controller is arranged on the front side of the equipment frame.

[0017] Further, a photoelectric sensing switch is arranged at the matching position of the connecting block and the upper stamping die.

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] The connection of the upper stamping die and the hydraulic drive telescopic actuating mechanism is realized through the die locking positioning mechanism, so that die changing is more convenient, and work efficiency is improved. Moreover, the double rack and the transmission gear inside the connecting block form a bidirectional meshing transmission system, and the double limiting function of the horizontal locking bolt is matched, so that the risk of transverse displacement in the stamping process can be completely eliminated; the secondary fine positioning is formed by the auxiliary positioning bolt and the auxiliary positioning hole in the upper stamping die connecting groove, and the positioning precision is greatly improved by cooperating with the photoelectric induction switch in real time, so that the blanking gap deviation is avoided, and the finished product size precision and the yield are directly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a front view sectional view of the utility model;

[0022] Figure 3 It is Figure 2 It is an enlarged view of A in the middle;

[0023] Figure 4 It is Figure 2 It is an enlarged view of B in the middle;

[0024] Figure 5 It is a structure schematic view of the transmission rod in the utility model;

[0025] Figure 6 It is a structure schematic view of the die locking positioning mechanism in the utility model;

[0026] Figure 7 It is Figure 6 C-C sectional view in the middle.

[0027] In the drawing: 1, equipment frame; 2, hydraulic drive telescopic actuating mechanism; 3, die locking positioning mechanism; 301, connecting block; 302, installation cavity; 303, bearing; 304, transmission rod; 305, first adjusting hand wheel; 306, transmission gear; 307, horizontal sliding slot; 308, rack; 309, horizontal locking bolt; 310, auxiliary positioning bolt; 4, upper stamping die; 5, positioning damping column; 6, lower stamping die; 7, buffer sleeve; 8, dynamic adjusting guide mechanism; 801, vertical sliding slot; 802, internal thread sleeve; 803, threaded shaft; 804, second adjusting hand wheel; 805, matching ring; 806, matching groove; 9, controller. DETAILED DESCRIPTION

[0028] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present utility model.

[0029] Please refer to Figures 1-7 The embodiment discloses an improved stamping die equipment, which mainly comprises an equipment frame 1, a hydraulic drive telescopic actuating mechanism 2, an upper stamping die 4, a lower stamping die 6, a die locking positioning mechanism 3, a dynamic adjustment guiding mechanism 8, a positioning shock absorbing column 5, a buffer sleeve 7 and a controller 9. The equipment frame 1 is used as a basic bearing structure, and the hydraulic drive telescopic actuating mechanism 2 is arranged on the top of the equipment frame 1. The mechanism is detachably connected with the upper stamping die 4 through the die locking positioning mechanism 3. The upper stamping die 4 and the lower stamping die 6 are arranged in the equipment frame 1, and form a stamping mechanics closed loop. The dynamic adjustment guiding mechanism 8 is symmetrically arranged on the left and right sides of the equipment frame 1, and is used for constraining the movement track of the upper stamping die 4. The hydraulic drive telescopic actuating mechanism 2 is the prior art in the field, and will not be described here.

[0030] As shown in Figure 2 , 3 , 5, 6 and 7, the die locking positioning mechanism 3 comprises a connecting block 301, the top surface of the connecting block 301 is connected with the movable end of the hydraulic drive telescopic actuating mechanism 2 through a quick-release flange plate, so that the connecting block 301 can be quickly assembled and disassembled. A rectangular mounting cavity 302 is formed in the connecting block 301, horizontal sliding grooves 307 are arranged on the top and bottom of the mounting cavity 302, and gear racks 308 are slidably arranged in the two horizontal sliding grooves 307. The distal ends of the two gear racks 308 are welded with horizontal locking bolts 309, and the horizontal locking bolts 309 penetrate the side wall of the connecting block 301 and extend to the outside.

[0031] A transmission gear 306 is engaged between the two gear racks 308, and the transmission gear 306 is fixed on a transmission rod 304 through a flat key. The two ends of the transmission rod 304 are rotatably connected with the connecting block 301 through bearings 303, and one end of the transmission rod 304 extends to the outside of the mounting cavity 302 and is fixedly connected with a first adjusting hand wheel 305. When the first adjusting hand wheel 305 is rotated, the transmission rod 304 drives the transmission gear 306 to rotate, and the two gear racks 308 are driven to synchronously slide in opposite directions through the gear and rack engagement relationship, and then the horizontal locking bolts 309 are driven to do linear reciprocating motion.

[0032] In this embodiment, two auxiliary positioning bolts 310 are vertically downwardly arranged on the bottom surface of the connecting block 301. A connecting groove matching the shape of the connecting block 301 is formed on the top surface of the upper stamping die 4. The bottom of the groove has auxiliary positioning holes that correspond to and cooperate with the auxiliary positioning bolts 310, and the sidewall of the groove has horizontal positioning holes that correspond to and cooperate with the horizontal locking bolts 309. This double-layer positioning structure of auxiliary positioning bolts 310 + horizontal locking bolts 309 ensures the accurate positioning of the upper stamping die 4 in three-dimensional space.

[0033] like Figure 1 , 2 As shown in Figure 4, the dynamic adjustment guide mechanism 8 includes a threaded shaft 803 and an internal threaded sleeve 802. Vertical grooves 801 are correspondingly provided on the left and right sides of the equipment frame 1, with the internal threaded sleeve 802 slidably disposed within each groove. The threaded shaft 803 and the internal threaded sleeve 802 are connected by fine-pitch threads and meet the self-locking condition that the friction angle is greater than the helix angle, eliminating the need for additional anti-loosening measures and ensuring that the threaded shaft 803 and the internal threaded sleeve 802 will not loosen due to vibration or external force under load. An insertion hole matching the threaded shaft 803 is provided on the side wall of the upper stamping die 4. One end of the threaded shaft 803 is inserted into this insertion hole, and a second adjusting handwheel 804 is provided at the other end. The extension length of the threaded shaft 803 can be precisely adjusted by rotating the second adjusting handwheel 804. Specifically, a mating groove 806 is provided in the vertical direction within the vertical groove 801, and a mating ring 805 is fitted onto the internal threaded sleeve 802, with the mating ring 805 slidingly engaging with the mating groove 806. The horizontal displacement of the upper stamping die, especially its back-and-forth swaying, can be limited by the dynamically adjustable guide mechanism 8, ensuring vertical movement stability. The internal threaded sleeve 802 can slide within the groove, forming a sliding pair, allowing for minor displacements caused by thermal expansion and contraction.

[0034] The aforementioned dynamic adjustment guide mechanism 8 has excellent fault tolerance and correction capabilities: 1. If there is a slight misalignment between the upper stamping die 4 and the lower stamping die 6, on-site calibration can be achieved through unilateral fine-tuning; 2. When the groove clearance increases after long-term use, the original positioning accuracy can be restored by screwing in the threaded shaft 803. Specifically, after the equipment has been running for a period of time, due to factors such as metal fatigue, friction and wear, or thermal expansion and contraction, a gap will be generated between the originally tightly fitted mating ring 805 and the mating groove 806 (i.e., "groove clearance increases"). This gap will cause the upper stamping die's movement trajectory to deviate, directly affecting the stamping accuracy and product quality. By rotating the second adjustment handwheel 804, the threaded shaft 803 is screwed inward relative to the inner threaded sleeve 802. The axial movement of the threaded shaft 803 will push the upper stamping die 4 connected to it to move synchronously. Through minor adjustments, the offset caused by the groove clearance can be offset, allowing the upper stamping die to return to its initial design position.

[0035] In this embodiment, the four corners of the bottom of the upper punch 4 are provided with positioning shock-absorbing columns 5, and the top of the lower punch 6 is provided with a buffer sleeve 7. The buffer sleeve 7 is filled with polyurethane elastic buffer to form a three-stage buffer system: the damping function of the hydraulic drive telescopic actuator 2 + the rigid support of the positioning shock-absorbing column 5 + the elastic absorption of the buffer sleeve 7. This design effectively reduces the impact vibration in the stamping process and prolongs the service life of the mold.

[0036] In this embodiment, a controller 9 is arranged on the front side of the equipment frame 1, which is connected with the hydraulic drive telescopic actuator 2 and the photoelectric sensing switch through a line. The photoelectric sensing switch is arranged at the matching position of the connecting block 301 and the upper punch 4. When the connecting block 301 and the upper punch 4 are not completely connected in place, the photoelectric signal is blocked, and the controller 9 prohibits starting the stamping program, thereby ensuring the safety of operation.

[0037] In this embodiment, the transmission gear 306 and the rack 308 are both made of carburized and quenched steel, and the surface hardness reaches HRC58-62. The gear surface is polished to Ra≤0.8μm after grinding. The threaded shaft 803 and the internal threaded sleeve 802 in the dynamic adjustment guide mechanism 8 adopt Tr30×6 fine thread, and the pitch error is controlled within ±0.02mm. The gap between the horizontal sliding groove 307 and the rack 308 is controlled within 0.05-0.1mm, which ensures smooth movement of the rack without shaking. All threaded connection parts are coated with Loctite 243 anaerobic glue, and the key bolts are prevented from loosening by elastic washers.

[0038] As a preferred embodiment, the end of the threaded shaft 803 is threadedly connected with a plug sleeve, so as to adapt to different hole diameters.

[0039] Working process:

[0040] The movable end of the hydraulic drive telescopic actuator 2 is connected with the connecting block 301 through a quick-release flange plate. The connecting block 301 slowly descends into the connecting groove on the top surface of the upper punch 4, and the auxiliary positioning bolt 310 is inserted into the auxiliary positioning hole to complete the rough positioning.

[0041] The first adjusting hand wheel 305 is rotated to drive the rack 308 to slide through the transmission gear 306, so that the horizontal locking bolt 309 is inserted into the horizontal positioning hole in the side wall of the connecting groove. At this time, the photoelectric sensing switch is triggered. The second adjusting hand wheel 804 on both sides is rotated, so that the end of the threaded shaft 803 extends into the hole in the side of the upper punch 4, thereby ensuring the absolute vertical movement of the upper punch 4.

[0042] The controller 9 is started to control the hydraulic drive telescopic actuator 2 to drive the upper punch 4 to descend, and the positioning shock-absorbing column 5 cooperates with the buffer sleeve 7 to absorb impact energy.

[0043] Reverse operation of the above steps can quickly change the mold, regular check rack 308 wear, if necessary, lubrication maintenance.

[0044] The embodiment effectively solves the problems of low positioning accuracy, poor die changing efficiency and weak anti-vibration performance of the traditional stamping die by the bidirectional rack transmission system of the mold positioning mechanism 3, the precise thread adjustment of the dynamic adjustment guide mechanism 8 and the multi-layer shock absorption and buffering design, and is particularly suitable for the production of high-precision stamping parts such as automobile safety belt supports.

[0045] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0046] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An improved stamping die equipment, comprising an equipment frame (1), a hydraulically driven telescopic actuator (2) provided on the top of the equipment frame (1), and an upper stamping die (4) and a lower stamping die (6) provided within the equipment frame (1), characterized in that: The movable end of the hydraulically driven telescopic actuator (2) is connected to the upper stamping die (4) through the mold locking and positioning mechanism (3); The mold-locking positioning mechanism (3) includes a connecting block (301). The top surface of the connecting block (301) is detachably connected to the movable end of the hydraulically driven telescopic actuator (2). An installation cavity (302) is provided inside the connecting block (301). Racks (308) are slidably arranged at the top and bottom of the installation cavity (302). Horizontal locking bolts (309) are connected to the disjoint ends of the two racks (308). The horizontal locking bolts (309) extend outside the connecting block (301). A transmission gear (306) meshes between two racks (308). The transmission gear (306) is fixedly mounted on a transmission rod (304). The transmission rod (304) is rotatably connected to the connecting block (301) via a bearing (303). One end of the transmission rod (304) extends to the inner wall of the mounting cavity (302), and the other end extends to the outside of the connecting block (301). A first adjusting handwheel (305) is provided. Two auxiliary positioning bolts (310) are fixedly mounted on the bottom surface of the connecting block (301). The top surface of the upper stamping die (4) is provided with a connecting groove that matches the connecting block (301). The bottom of the connecting groove is provided with an auxiliary positioning hole that matches the auxiliary positioning bolt (310). The side wall of the connecting groove is provided with a horizontal positioning hole that matches the horizontal locking bolt (309). The equipment frame (1) is provided with dynamic adjustment guide mechanisms (8) on both the left and right sides, which are connected to the upper stamping die (4).

2. The improved stamping die equipment according to claim 1, characterized in that: The top and bottom of the mounting cavity (302) are respectively equipped with horizontal sliding grooves (307), and the rack (308) slides in cooperation with the horizontal sliding grooves.

3. The improved stamping die equipment according to claim 1, characterized in that: The transmission gear (306) and rack (308) are both made of carburized and quenched steel.

4. The improved stamping die equipment according to claim 1, characterized in that: The upper stamping die (4) has positioning and shock-absorbing columns (5) installed at the four bottom corners, and the lower stamping die (6) has a buffer sleeve (7) adapted to the positioning and shock-absorbing columns (5) installed at the top. The buffer sleeve (7) is provided with an elastic buffer.

5. An improved stamping die equipment according to claim 1, characterized in that: The dynamic adjustment guide mechanism (8) includes a threaded shaft (803) and an internal threaded sleeve (802). Vertical grooves (801) are opened on the left and right sides of the equipment frame (1). The internal threaded sleeve (802) slides in cooperation with the vertical groove (801). The threaded shaft (803) is threadedly connected to the internal threaded sleeve (802). An insertion hole matching the threaded shaft (803) is opened on the side wall of the upper stamping die (4). One end of the threaded shaft (803) is inserted into the insertion hole, and the other end is provided with a second adjustment handwheel (804).

6. An improved stamping die equipment according to claim 5, characterized in that: The threaded shaft (803) has a sleeve threadedly connected to its end.

7. An improved stamping die equipment according to claim 5, characterized in that: The threaded shaft (803) and the inner threaded sleeve (802) are fitted with fine thread, and the friction angle is greater than the helix angle.

8. An improved stamping die equipment according to claim 1, characterized in that: A controller (9) is provided on the front side of the device frame (1).

9. An improved stamping die equipment according to claim 1, characterized in that: A photoelectric sensor switch is installed at the mating position between the connecting block (301) and the upper stamping die (4).

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