Quick locking die assembly for injection molding machine, die casting machine, punch press

Abstract

The application discloses a mold assembly for quick locking of an injection molding machine, which comprises a bottom plate, a T-shaped sliding rail, a pressing block, a pressing plate, a fulcrum shaft and a swing lever locking assembly. A fulcrum hinged seat, a lower pusher seat and a rotary adjusting seat are arranged on the upper end surface of the bottom plate. The fulcrum hinged seat is movably hinged with a fulcrum seat arranged on the lower end of the pressing block through the fulcrum shaft. Locking holes connected with the pressing plate are arranged on the two sides of the front end of the pressing block. An upper pusher seat is arranged on the lower end surface of the rear end of the pressing block. The swing lever locking assembly comprises a first Y-shaped swing lever, a second Y-shaped swing lever, an upper hinged shaft, a lower hinged shaft, a middle hinged shaft, a Y-shaped pull rod, an arc-shaped pull rod, a locking sleeve, a first pin shaft, a second pin shaft and a rotary shaft. The swing lever and the lever structure are designed to realize the relaxation and locking functions. The swing lever dead point locking principle is utilized to make the lever completely in the locking state without relaxation. The nut loosening and the clamping loosening are prevented. The pressing stress condition can be timely fed back to the controller, and the mold replacement is fast and efficient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molding machine, die casting machine and stamping machine equipment, and particularly relates to a die assembly for quick locking of an injection molding machine, a die casting machine and a stamping machine. BACKGROUND

[0002] In injection molding production, the fixing mode between a mold of an injection molding machine and a mold frame is single, and a bolt is usually used in cooperation with a fixed pressing block to fix a mold base of the mold on the mold frame, the locking process is time-consuming and laborious, and there is a phenomenon that nuts are loose, leading to misalignment of the mold base, in order to firmly press the mold base by the pressing block and timely feedback the pressing force, a quick locking mechanism needs to be specially designed to replace the traditional bolt locking mode, which can not only prevent the nuts from being loose and clamping from being loose, but also timely feedback the pressing force to the controller, and the mold can be replaced quickly and efficiently. SUMMARY

[0003] The application aims at the technical demand mentioned in the background technology, and provides a die assembly for quick locking of an injection molding machine, a die casting machine and a stamping machine, which is designed with a swing lever cooperating with a lever structure to realize the relaxation and locking functions, and utilizes the swing lever dead point locking principle to make the lever completely in the locking state without relaxation, utilizes a pressure sensor to monitor the stress of a pressing plate, utilizes a temperature sensor to monitor the temperature change of the pressing plate and the mold, and simultaneously equips a displacement sensor to monitor the displacement change of the pressing plate, and the overtravel is alarm prompted, which is safe and practical, and at least eight die assemblies are equipped for each device, which can not only monitor the single-point pressure, temperature and position of a single device, but also relatively compare eight points, monitor the distribution consistency of the pressure and the temperature, can prevent the nuts from being loose and clamping from being loose, and can timely feedback the pressing force to the controller, and the mold can be replaced quickly and efficiently.

[0004] The technical scheme adopted to solve the above problems is as follows:

[0005] A die assembly for quick locking of an injection molding machine, a die casting machine and a stamping machine, which comprises a bottom plate, a T-shaped sliding rail, a pressing block, a pressing plate, a fulcrum shaft and a swing lever locking assembly.

[0006] The T-shaped sliding rail is fixed at the lower end face of the bottom plate through bolts, and adjusts the spacing in cooperation with a T-shaped groove provided on the mold frame of the injection molding machine, the upper end face of the bottom plate is provided with a fulcrum hinged seat, a lower pusher seat and a rotary adjusting seat, the fulcrum hinged seat movably hingedly connects the fulcrum seat arranged at the lower end of the pressing block through the fulcrum shaft, so that the pressing block freely rotates around the fulcrum shaft,

[0007] The front end of the pressing block is provided with locking holes connected with the pressing plate, the locking holes are arc-shaped in cross section, and the arc-shaped locking holes are clamped with a cylindrical locking ring arranged at the corresponding position of the upper end surface of the pressing plate, and the locking ring is locked by screws from both sides, so that the pressing plate and the pressing block are locked firmly, an oval hole is arranged in the center of the pressing block, a sensor control chip is arranged in the oval hole, and the oval hole is packaged with silica gel, an upper pusher seat is arranged on the lower end surface of the rear end of the pressing block, the pusher frame cooperates with the swing rod locking assembly to adjust rotation up and down, and the pressing plate and the mold base of the mold are pressed or loosened,

[0008] The swing rod locking assembly comprises a first Y-shaped swing rod, a second Y-shaped swing rod, an upper hinge shaft, a lower hinge shaft, a middle hinge shaft, a Y-shaped pull rod, an arc-shaped pull rod, a locking sleeve, a first pin shaft, a second pin shaft and a rotating shaft.

[0009] The first Y-shaped swing rod, the second Y-shaped swing rod and the Y-shaped pull rod each comprise a single-arm end and a double-arm end at both ends, the single-arm end of the first Y-shaped swing rod is movably hinged with the upper pusher seat through the upper hinge shaft, the single-arm end of the second Y-shaped swing rod is movably hinged with the lower pusher seat through the lower hinge shaft, the double-arm end of the first Y-shaped swing rod is movably hinged with the double-arm end of the second Y-shaped swing rod through the middle hinge shaft, the middle part of the middle hinge shaft is further movably hinged with the single-arm end of the Y-shaped pull rod, the double-arm end of the Y-shaped pull rod is movably connected with the arc-shaped pull rod through the first pin shaft, the other end of the arc-shaped pull rod is movably connected with a pull rod seat arranged on the outer wall of the locking sleeve through the second pin shaft, the inner ring of the arc-shaped pull rod is provided with a locking groove, the locking groove is tightly fitted with the arc surface of the outer wall of the locking sleeve, so as to realize rotation angle locking, and then the first Y-shaped swing rod and the second Y-shaped swing rod are locked at the straight line position to form a dead point.

[0010] Further, the rotating shaft is fixedly connected with the key groove of the center hole of the locking sleeve, and the both ends are connected with the rotating adjusting seat through bearings.

[0011] Further, the oval hole of the pressing block is further provided with a pressure sensor below, so as to monitor the stress condition of the whole pressing mold assembly according to the deformation parameter of the oval column.

[0012] Further, the edges of the pressing block are each provided with a fillet to reduce the bending stress concentration and cause the bending cracks of the pressing block.

[0013] Further, the double-arm ends of the first Y-shaped swing rod and the second Y-shaped swing rod are each provided with a rotation direction avoiding arc to prevent position interference.

[0014] Further, the upper end surface of the pressing plate is further provided with a temperature sensor.

[0015] Further, a displacement sensor is arranged on the front end surface of the pressing block.

[0016] The beneficial effects of the present application are:

[0017] 1. The mold assembly for quick locking of injection molding machine, die casting machine, punching machine is designed with a swing lever cooperating with a lever structure to realize relaxation and locking functions, and utilizes the swing lever dead point locking principle to make the lever completely in the locked state without relaxation;

[0018] 2. The force on the pressing plate is monitored by using a pressure sensor, and the mold temperature change conducted by the contact between the pressing plate and the mold is monitored by using a temperature sensor;

[0019] 3. At the same time, a displacement sensor is provided to monitor the displacement change of the pressing plate, and an alarm is given when the displacement exceeds the limit, which is safe and practical;

[0020] 4. The mold assembly is provided with at least 8 intelligent pressing plates for each device, which can not only monitor the single-point pressure, temperature and position of a single pressing plate, but also compare 8 points, monitor the consistency of pressure and temperature distribution, prevent nut loosening and clamping loosening, and timely feedback the pressing force, real-time temperature and real-time position to the controller, so that the mold replacement is fast and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a rear view of the mold assembly for quick locking of injection molding machine, die casting machine, punching machine of the present embodiment;

[0022] Figure 2 is a front view of the mold assembly for quick locking of injection molding machine, die casting machine, punching machine of the present embodiment in a pressing state;

[0023] Figure 3 is a rear view of the pressing block of the present embodiment;

[0024] Figure 4 is a front view of the pressing block of the present embodiment;

[0025] Figure 5 is a structural schematic view of the swing lever locking assembly of the present embodiment;

[0026] Figure 6 is a front view of the mold assembly for quick locking of injection molding machine, die casting machine, punching machine of the present embodiment in a relaxation state;

[0027] Figure 7 is Figure 6 is a local enlarged view of position A in FIG. 8;

[0028] Figure 8 is a front view of the mold assembly for quick locking of injection molding machine, die casting machine, punching machine of the present embodiment;

[0029] Among them, 1-pressure block, 2-silicone, 3-pressure plate, 4-pivot hinge seat, 5-base plate, 6-rotation adjustment seat, 7-rotation shaft, 8-T-shaped slide rail, 9-lower push seat, 10-second Y-shaped swing arm, 11-first Y-shaped swing arm, 12-screw, 13-pivot shaft, 14-upper push seat, 15-rounded corner, 16-elliptical hole, 17-pivot hole, 18-locking hole, 19-pivot seat, 20-pressure sensor slot, 21-rounded corner of upper push seat, 2 2-Mounting hole for displacement sensor; 23-Single arm end of the first Y-shaped rocker arm; 24-Upper hinge shaft; 25-Double arm end of the first Y-shaped rocker arm; 26-Middle hinge shaft; 27-Lower hinge shaft; 28-Locking sleeve; 29-Second pin; 30-Pull rod seat; 31-Arc-shaped pull rod; 32-First pin; 33-Y-shaped pull rod; 34-Bolt; 35-Temperature sensor; 36-Displacement sensor; 37-Pressure sensor; 38-Locking groove; 39-Locking ring. Detailed Implementation

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and by way of embodiments.

[0031] Please see Figures 1-8 This embodiment proposes a mold assembly for quick locking in injection molding machines, die casting machines, and stamping machines, including a base plate 5, a T-shaped slide rail 8, a pressure block 1, a pressure plate 3, a fulcrum shaft 13, and a rocker arm locking assembly.

[0032] Specifically, see Figure 1 and Figure 6 The T-shaped slide rail 8 is fixed to the lower end face of the base plate 5 by bolts 34, and cooperates with the T-shaped groove provided by the injection molding machine mold frame to adjust the spacing. The upper end face of the base plate 5 is provided with a fulcrum hinge seat 4, a lower push seat 9 and a rotation adjustment seat 6. The fulcrum hinge seat 4 cooperates with the fulcrum shaft 13 to movably hinge the fulcrum seat 19 provided at the lower end of the pressure block 1, so that the pressure block 1 can rotate freely about the fulcrum shaft 13.

[0033] See Figure 2 , Figure 3 and Figure 4The front end of the pressing block 1 is provided with locking holes 18 connected with the pressing plate 3, the locking holes 18 are arc-shaped in cross section, and are matched with the cylindrical locking ring 39 arranged at the corresponding position of the upper end surface of the pressing plate 3, and the locking ring 39 is locked from both sides by the expansion hole screw 12, so that the pressing plate 3 and the pressing block 1 are locked firmly, and the center of the pressing block 1 is provided with an oval hole 16, which can increase the accuracy of the pressure sensor, reduce the internal stress of the pressing block itself, improve the fatigue resistance of the pressing block, and prolong the service life of the pressing block; the sensor control chip is arranged in the oval hole, and then the silica gel 2 is encapsulated, which not only ensures the mechanical structure performance of the pressing block itself, but also strengthens the shock resistance of the pressing block, and optimizes the compactness of the overall structure, so as to strengthen the shock resistance of the pressing block 1, and the upper end surface of the rear end of the pressing block 1 is provided with an upper push seat 14, the upper push seat 14 is matched with the up-down adjusting rotation of the swing rod locking assembly, and the pressing plate 3 and the mold base (not shown in the figure) are pressed or loosened.

[0034] Referring to Figure 5 The swing rod locking assembly comprises a first Y-shaped swing rod 11, a second Y-shaped swing rod 10, an upper hinge shaft 24, a lower hinge shaft 27, a middle hinge shaft 26, a Y-shaped pull rod 33, an arc-shaped pull rod 31, a locking sleeve 28, a first pin shaft 32, a second pin shaft 29 and a rotating shaft 7.

[0035] The first Y-shaped swing rod 11, the second Y-shaped swing rod 10 and the Y-shaped pull rod all comprise single-arm ends and double-arm ends at both ends, the single-arm end 23 of the first Y-shaped swing rod is movably hinged with the upper push seat 14 through the upper hinge shaft 24, the single-arm end of the second Y-shaped swing rod 10 is movably hinged with the lower push seat 9 through the lower hinge shaft 27, the double-arm end 25 of the first Y-shaped swing rod is movably hinged with the double-arm end of the second Y-shaped swing rod through the middle hinge shaft 26, the middle hinge shaft 26 is further movably hinged with the single-arm end of the Y-shaped pull rod, the double-arm end 33 of the Y-shaped pull rod is movably connected with the arc-shaped pull rod 31 through the first pin shaft 32, the other end of the arc-shaped pull rod 31 is movably connected with the pull rod seat 30 arranged on the outer wall of the locking sleeve 28 through the second pin shaft 29, and the inner ring of the arc-shaped pull rod 31 is provided with a locking groove 38.

[0036] Referring to Figure 7 The locking groove 38 is tightly matched with the arc surface of the outer wall of the locking sleeve 28, so as to realize the rotation angle locking, and then lock the first Y-shaped swing rod 11 and the second Y-shaped swing rod 10 in the straight line position, form the swing rod dead point, the rotating shaft 7 is fixedly connected with the key groove of the center hole of the locking sleeve 28, and is matched with the bearing between both ends and the rotating adjusting seat 6, and the outer part of the rotating shaft 7 can be connected with the reduction motor to realize the automatic rotation action.

[0037] The working principle is: under the driving of the rotating shaft, the locking sleeve rotates synchronously, and pulls the arc-shaped pull rod and the Y-shaped pull rod, the Y-shaped pull rod pulls the middle articulated shaft forward and backward, so that the first Y-shaped swing rod and the second Y-shaped swing rod are pulled forward to form a straight line, thereby forming a compression state; or pushed backward to form a broken line, thereby forming a loosening state. In particular, when the locking groove is in close contact with the locking sleeve, the first Y-shaped swing rod and the second Y-shaped swing rod are pulled forward to form a straight line, and a dead point is formed in the straight line direction, so that the pressure of the pressure block on the first Y-shaped swing rod and the second Y-shaped swing rod does not change the bending of the latter two, thereby locking immovably.

[0038] Further embodiments are that the pressure block 1 is further provided with a pressure sensor 37 below the oval hole 16, to monitor the stress condition of the entire compression mold assembly by the deformation parameter of the oval column 2.

[0039] Further embodiments are that each edge of the pressure block 1 is provided with a round corner 15 to reduce the bending stress concentration and cause the pressure block 1 to crack.

[0040] Further embodiments are that the double-arm ends of the first Y-shaped swing rod 11 and the second Y-shaped swing rod 10 are provided with rotation direction avoiding arcs to prevent position interference.

[0041] Further embodiments are that the upper end surface of the pressure plate 3 is further provided with a temperature sensor 35 in the normal direction to monitor the temperature change of the pressure plate 3 under long-time working condition and the difference between the other 7 point temperature zones.

[0042] Further embodiments are that the front end surface of the pressure block 1 is provided with a displacement sensor 36 to cooperate with the external controller to monitor the displacement change of the pressure plate 3 and the difference between the other 7 point temperature zones.

[0043] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above-described embodiments, and various changes, modifications, replacements and variations can be made within the knowledge of those skilled in the art without departing from the purpose of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A mold assembly for quick locking of injection molding machines, die casting machines, and punch machines, comprising a base plate, a T-shaped slide rail, a pressing block, a pressing plate, a fulcrum shaft, and a swing lever locking assembly, characterized in that: the upper end surface of the base plate is provided with a fulcrum hinged seat, a lower pusher seat, and a rotary adjusting seat; the fulcrum hinged seat cooperates with the fulcrum shaft to movably hinge the fulcrum seat provided at the lower end of the pressing block, so that the pressing block freely rotates about the fulcrum shaft; the front end of the pressing block is provided with locking holes on both sides for connecting the pressing plate; the locking holes are arc-shaped in cross section and are in clamping engagement with a cylindrical locking ring provided at the corresponding position on the upper end surface of the pressing plate; the locking ring is locked by screws from both sides; the pressing plate and the pressing block are locked firmly; an oval hole is formed in the center of the pressing block; a sensor control chip is arranged in the oval hole and is encapsulated with silica gel; the lower end surface of the rear end of the pressing block is provided with an upper pusher seat; the upper pusher seat cooperates with the swing lever locking assembly to adjust rotation up and down; the swing lever locking assembly comprises a first Y-shaped swing lever, a second Y-shaped swing lever, an upper hinge shaft, a lower hinge shaft, a middle hinge shaft, a Y-shaped pull rod, an arc-shaped pull rod, a locking sleeve, a first pin shaft, a second pin shaft, and a rotary shaft; the first Y-shaped swing lever, the second Y-shaped swing lever, and the Y-shaped pull rod each comprise single-arm ends and double-arm ends at both ends; the single-arm end of the first Y-shaped swing lever is movably hinged to the upper pusher seat through the upper hinge shaft; the single-arm end of the second Y-shaped swing lever is movably hinged to the lower pusher seat through the lower hinge shaft; the double-arm end of the first Y-shaped swing lever is movably hinged to the double-arm end of the second Y-shaped swing lever through the middle hinge shaft; the middle part of the middle hinge shaft is movably hinged to the single-arm end of the Y-shaped pull rod; the double-arm end of the Y-shaped pull rod is movably connected to the arc-shaped pull rod through the first pin shaft; the other end of the arc-shaped pull rod is movably connected to a pull rod seat provided on the outer wall of the locking sleeve through the second pin shaft; the inner ring of the arc-shaped pull rod is provided with a locking groove; the locking groove is tightly fitted with the arc-shaped surface of the outer wall of the locking sleeve, so as to realize rotation angle locking and lock the first Y-shaped swing lever and the second Y-shaped swing lever in a straight line position, forming a dead point. The T-shaped slide rail is fixed to the lower end surface of the base plate by bolts and cooperates with a T-shaped groove provided on the mold frame of the injection molding machine to adjust the spacing. The rotary shaft is fixed to the key groove of the center hole of the locking sleeve, and the two ends are connected to the rotary adjusting seat through bearings. The rotary shaft can be connected to a reduction motor outside to realize automatic rotation. A pressure sensor is further arranged below the oval hole of the pressing block.

2. The mold assembly for quick locking of injection molding, die casting, punch press machines as claimed in claim 1 wherein: The edges of the pressing block are each provided with a rounded corner.

3. The mold assembly for quick locking of injection molding, die casting, and punch press machines as claimed in claim 1, wherein: The double-arm ends of the first Y-shaped swing lever and the second Y-shaped swing lever are each provided with a rotation direction avoiding arc.

4. The mold assembly for quick locking of injection molding, die casting, punch press machine as claimed in claim 1 wherein: A temperature sensor is further arranged on the upper end surface of the pressing plate in the normal direction.

5. The mold assembly for quick locking of injection molding, die casting, punch press machines as claimed in claim 1 wherein: A displacement sensor is arranged on the front end surface of the pressing block.

6. The mold assembly for quick locking of injection molding, die casting, punch press machines as claimed in claim 1 wherein: ​ 7. The mold assembly for quick locking of injection molding, die casting, punch press machines as claimed in claim 1 wherein: ​ 8. The mold assembly for quick locking of injection molding, die casting, punch press machines as claimed in claim 1 wherein: ​

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