CN217617665U - Demolding mechanism of die casting mold for product with special-shaped cavity with large inside and small outside - Google Patents

Abstract

The utility model discloses a demoulding mechanism of a die-casting mould for a product with a special-shaped cavity with a large inside and a small outside, relating to the technical field of die-casting moulds, the technical problems that the existing product with the irregular cavities with the large inner part and the small outer part cannot be realized by a die-casting forming process under the condition of track cross interference, the quality is poor, the efficiency is low, and the production cost is high are solved. The mechanism comprises an inner slide insert, a main slide core-pulling structure and a fixing structure; the inner walking position insert and the main walking position can form a cavity of a cavity product; the fixing structure is respectively fixedly connected with the inner slide insert and the main slide core-pulling structure; the main slide core pulling structure can drive the fixing structure to move, so that the cavity product is completely demoulded. The utility model discloses can realize the die casting die of big-end-up dysmorphism cavity product under the condition of track cross interference, also can take out the built-in mold insert in the product after the product die-casting shaping, reach big-end-up's cavity effect in the product, improve product quality and production efficiency, reduce manufacturing cost.

Description

Demolding mechanism of die casting mold for product with special-shaped cavity with large inside and small outside

Technical Field

The utility model relates to a die casting die technical field especially relates to a die casting die's demolding mechanism of big-end-up dysmorphism cavity product.

Background

The die-casting die is a tool for casting metal parts, and is a tool for completing a die-casting process on a special die-casting die forging machine. The basic process of die casting comprises the following steps: the molten metal is filled into a cavity of a casting die at a low speed and then at a high speed, and the pressure is transmitted to a special hammer head to perform pressurized forging on the molten metal through mechanical action in the cooling process of the molten metal, so that the defects of shrinkage cavity and shrinkage porosity of a blank are eliminated, the internal structure of the blank reaches broken crystal grains in a forging state, and the comprehensive mechanical property of the blank is obviously improved.

No matter the slide, oblique top, all adopt the principle of straight line business turn over in die-casting cavity product die design structure on the market at present, in case local structure appears under the condition that the orbit cross overlapping interferes, just can't realize the technology of the production with die-casting one shot forming, and production efficiency is low.

In the process, the utility model discloses the in-process, utility model people discover to have following problem among the prior art at least:

if a product with a large inner cavity and a small outer cavity is encountered and the movement tracks in the product are crossed, overlapped and interfered, the product cannot be formed in place by a die-casting process in one step, and the product has poor quality, low efficiency and high production cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a die casting die's of inside big outside small special-shaped cavity product demolding mechanism to solve the inside track cross interference's that has of the product of the inside big outside small special-shaped cavity that exists among the prior art the condition down unable die-casting forming process that uses of realizing, lead to the quality relatively poor, inefficiency, technical problem that manufacturing cost is high. The utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a die-casting mechanism of a die-casting die for a product with a special-shaped cavity with a large inside and a small outside is used for die-casting the product with the special-shaped cavity with the large inside and the small outside and comprises an inner slide insert, a main slide core-pulling structure and a fixing structure; the inner slide insert and the main slide can be matched with the fixed die structure and the movable die structure to form a cavity of the cavity product; the fixing structure is respectively fixedly connected with the inner slide insert and the main slide core-pulling structure; the main slide core-pulling structure can drive the fixing structure to move, so that the cavity product is completely demoulded.

Preferably, the fixing structure comprises a fixing screw and an installation hanging table, the fixing screw is arranged in the installation hanging table, and the fixing screw can synchronously move with the installation hanging table under the action of the main slide core-pulling structure; the fixing structure comprises a first fixing structure and a second fixing structure, and the first fixing structure and the second fixing structure are arranged in the cavity product in a crossed mode.

Preferably, the inner slide insert is provided with a locking inner tooth; the fixed screw is provided with a pushing outer tooth and a locking outer tooth; the pushing outer teeth can push the fixing screw rod to move forwards, and the locking outer teeth can be fixed with the locking inner teeth, so that the fixing screw rod and the inner slide insert are locked; the pushing outer teeth are correspondingly provided with a pushing nut and a correcting spring, and the pushing nut and the correcting spring are both sleeved on the fixing screw rod.

Preferably, the fixing structure further comprises a tunnel connecting block and a motor bracket, and the motor bracket can be fixedly connected with the tunnel connecting block; the fixing structure further comprises a motor and a transmission, the motor and the transmission are fixedly connected with the motor bracket, the motor can provide power for the fixing screw rod when the fixing screw rod is locked, and the transmission can convert the output speed of the motor;

the propelling nut and the correcting spring are arranged in the tunnel connecting block, the correcting spring is sleeved at the top end of the connecting part of the motor support and the tunnel connecting block, and the maximum outer diameter of the fixing screw from the pushing outer teeth on the fixing screw to the motor support section is not larger than the minimum outer diameter of the pushing outer teeth on the screw.

Preferably, the motor bracket is provided with a limiting block, a photoelectric sensor, a contact switch or an inductive switch of any one of travel switches; the limiting block is arranged on a fixing screw rod in the motor support and corresponds to the photoelectric sensor, the photoelectric sensor is arranged on the outer side of the motor support and can transmit signals to the PLC, and the motor is controlled to work through the PLC.

Preferably, the main slide core-pulling structure comprises a moving plate and a core-pulling guide rail; the movable plate can slide on the core-pulling guide rail.

Preferably, the main slide core-pulling structure further comprises a stop table; the motion plate can be abutted against the stop-in table, and the stop-in table can limit the sliding position of the motion plate.

Preferably, the main slide core-pulling structure further comprises a core-pulling assembly, the core-pulling assembly is fixedly connected with the moving plate, and the core-pulling assembly can move synchronously with the moving plate.

Preferably, the core pulling assembly comprises a front pushing table, a pull-back stop block, a return hanging table and a resistance spring; the front push platform can be abutted against the pull-back stop block under the action of the resistance spring, and the return hanging platform can also be abutted against the pull-back stop block.

Preferably, the main slide core-pulling structure further comprises an oil cylinder bracket and a core-pulling oil cylinder; the core-pulling oil cylinder is fixedly connected with the oil cylinder support, and the core-pulling oil cylinder is connected with the core-pulling assembly through a connecting rod and can drive the core-pulling assembly to move.

Implement the utility model discloses a technical scheme among the above-mentioned technical scheme has following advantage or beneficial effect:

the utility model discloses can realize the die casting die of big-end-up dysmorphism cavity product under the condition of track cross interference, also can take out the built-in mold insert in the product after the product die-casting shaping, reach the big-end-up cavity effect in the product, improve product quality and production efficiency, reduce manufacturing cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, and in the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of a demolding mechanism of a die-casting mold for a product with a special-shaped cavity with a large inside and a small outside;

fig. 2 is a first connection schematic diagram of the main slide core pulling structure and the fixing structure of the present invention;

fig. 3 is a schematic view of the fixing structure of the present invention;

fig. 4 is a schematic view of the left inner slide insert of the present invention being detached from the first fixing structure;

FIG. 5 is a schematic view of a fixing screw of the fixing structure of the present invention;

fig. 6 is a second connection schematic diagram of the main slide core pulling structure and the fixing structure of the present invention;

fig. 7 is an enlarged schematic view of a in fig. 6 according to the present invention.

In the figure: 1. an inner slide insert; 11. the left inner slide insert; 12. the right inner slide insert; 2. a first fixed structure; 21. a first fixing screw; 211. pushing the outer teeth; 212. locking the outer teeth; 213. pushing the nut; 214. a screw limiting table; 215. a correction spring; 22. a first mounting hanging table; 23. a first tunnel connection block; 24. a first motor bracket; 241. a photoelectric sensor; 242. a first set of photosensors; 243. a second set of photosensors; 244. a heat insulation block; 245. a limiting block; 246. a motor connecting block; 25. a first transmission; 26. a first motor; 27. a first mobile link; 28. a first drive link; 3. a second fixed structure; 31. a second fixing screw; 32. a second mounting hanging platform; 33. a second tunnel connection block; 34. a second motor bracket; 35. a second transmission; 36. a second motor; 37. a second mobile connector; 38. a second drive link; 4. a main slide core-pulling structure; 41. a sports board; 42. a core-pulling guide rail; 43. a core pulling assembly; 431. a forward pushing table; 432. pulling back the stop block; 433. returning to the hanging table; 44. a resistance spring; 45. a stop-in table; 46. a core-pulling oil cylinder; 47. a cylinder support; 48. a connecting rod; 5. a main row bit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, various exemplary embodiments to be described below will refer to the accompanying drawings, which form a part hereof, and in which are described various exemplary embodiments that may be employed to implement the present invention. The same numbers in different drawings identify the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatus, etc., consistent with certain aspects of the present disclosure, as detailed in the appended claims, and that other embodiments may be used or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present disclosure.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," and the like are used herein in a generic and descriptive sense only and not for purposes of limitation, the terms "central," "longitudinal," "transverse," and the like in the description referring to the orientation or positional relationship shown in the drawings and the description being intended to indicate or imply that the elements so referred to must have a particular orientation, be constructed and operated in a particular orientation. 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 or to implicitly indicate the number of technical features indicated. The term "plurality" means two or more. The terms "connected" and "coupled" are to be construed broadly and may include, for example, a fixed connection, a removable connection, an integral connection, a mechanical connection, an electrical connection, a communicative connection, a direct connection, an indirect connection via intermediate media, and may include, for example, a connection between two elements or an interaction between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to explain the technical solution of the present invention, the following description is made by way of specific examples, and only the portions related to the embodiments of the present invention are shown.

The embodiment is as follows:

as shown in fig. 1, the utility model provides a mold stripping mechanism of a die casting mold for a special-shaped cavity product with a large inside and a small outside, which is used for molding and stripping the special-shaped cavity product with the large inside and the small outside, and comprises an inner slide insert 1, a main slide insert 5, a main slide core-pulling structure 4 and a fixed structure; the inner slide insert 1 and the main slide 5 can form a cavity of a cavity product; the fixing structure is respectively fixedly connected with the inner slide insert 1 and the main slide core-pulling structure 4; the main slide core-pulling structure 4 can drive the fixed structure to move, so that the cavity product is completely demoulded. Specifically, the fixing structure is respectively fixedly connected with the inner slide insert 1 and the main slide core-pulling structure 4, and when the main slide core-pulling structure 4 moves, the fixing structure can be driven to move, so that the product can be completely demoulded. Specifically, the fixing structure and the main slide core-pulling structure 4 can move synchronously by moving the connecting piece. The fixing structure is divided into a first fixing structure 2 and a second fixing structure 3, the first fixing structure 2 and the second fixing structure 3 are respectively provided with a first fixing screw 21, a second fixing screw 31, a first tunnel connecting block 23, a second tunnel connecting block 33, a first mounting hanging table 22, a second mounting hanging table 32, a first motor support 24 and a second motor support 34; the movable connecting parts are divided into a first movable connecting part 27 and a second movable connecting part 37, the first movable connecting part 27 and the second movable connecting part 37 are arranged on the left side and the right side of the core-pulling assembly 43, the first movable connecting part 27 and the second movable connecting part 37 are respectively and fixedly connected with a first tunnel connecting block 23 and a second tunnel connecting block 33 which are arranged on the first fixed structure 2 and the second fixed structure 3, and the first mounting hanging table 22, the second mounting hanging table 32, the first motor support 24 and the second motor support 34 are respectively connected with the first tunnel connecting block 23 and the second tunnel connecting block 33, so that when the main slide core-pulling structure 4 acts, the left inner slide insert 11 and the right inner slide insert 12 can be separated or connected with the main slide 5 through the telescopic movement of the first movable connecting part 27 and the second movable connecting part 37, the first fixed screw 21 and the second fixed screw 31, the main slide 5 can enter or exit the cavity, a cavity product can be completely formed, and the product can be completely taken out after the main slide 5 exits the cavity. The utility model discloses in the main position of a slide core structure 4 that sets up and fixed knot construct can realize big-end-up dysmorphism cavity product mould under the circumstances that has track cross interference, also can take out the product from die casting die with the product one-time die-casting shaping and can be complete to reach big-end-up's cavity effect in the product, improved product quality, improved production efficiency, reduce manufacturing cost.

As an alternative embodiment, as shown in fig. 2-4, the demolding mechanism includes a fixing structure; the fixing structure is respectively fixedly connected with the inner slide insert 1 and the main slide core-pulling structure 4; the fixing structure comprises a fixing screw and an installation hanging table, the fixing screw is arranged in the installation hanging table, and the fixing screw can synchronously move with the installation hanging table under the action of the main slide core pulling structure 4; the fixed knot constructs to set up to two sets ofly, and the structure on every group fixed knot constructs is the same with the position setting homonymy, and first fixed knot constructs 2 and the inside cross arrangement of cavity of second fixed knot structure 3 at the cavity product. Specifically, as shown in fig. 2 and 3, the fixing structure includes a first fixing structure 2 and a second fixing structure 3, the first fixing structure 2 includes a first fixing screw 21, a first mounting hanging table 22, a first tunnel connecting block 23, a first motor bracket 24, a first transmission 25, a first motor 26, a first moving connecting piece 27 and a first transmission connecting rod 28; the second fixing structure 3 includes a second fixing screw 31, a second mounting hanging table 32, a second tunnel connecting block 33, a second motor bracket 34, a second transmission 35, a second motor 36, a second movable connecting piece 37, and a second transmission connecting rod 38 (it should be noted that, since the first fixing structure 2 and the second fixing structure 3 have the same structure, in the following description, only one of the fixing structures is illustrated, and in the following description, the fixing structure includes a fixing screw, a mounting hanging table, a tunnel connecting block, a motor bracket, a motor connecting block, a heat insulating block, a transmission, a motor, a movable connecting piece, and a transmission connecting rod. Specifically, the left inner slide insert 11 and the right inner slide insert 12 can be fixedly connected to the first fixing screw 21 and the second fixing screw 31 disposed on the first fixing structure 2 and the second fixing structure 3, respectively. Specifically, in order to realize the left cavity and the right cavity in the cavity of the cavity product more perfectly, the left inner-row position insert 11 and the right inner-row position insert 12 are arranged inside the cavity of the product, and after die-casting molding, the left inner-row position insert 11 and the right inner-row position insert 12 are taken out, so that a desired cavity effect can be obtained, and meanwhile, the integrity of the cavity product can be ensured. The utility model discloses in, the first clamping screw 21 of setting, second clamping screw 31 can with the interior position mold insert 11 of going in a left side, go position mold insert 12 fixed connection in the right side, first clamping screw 21, second clamping screw 31 is alternately set up in the cavity of cavity product, can be effectual with the interior position mold insert 11 of going in a left side, the inseparable fixing of the interior position mold insert 12 of going in the right side is on main position 5 of going, can reach the preliminary shape of big-end-up product after the die-casting shaping, just can obtain perfect big-end-up cavity product after taking out interior position mold insert 11 of going in a left side and the interior position mold insert 12 of going in the right side.

As an alternative embodiment, as shown in fig. 5, the inner slide insert 1 is provided with a locking inner tooth (not shown in the figure); the first fixing screw 21 and the second fixing screw 31 are both provided with a pushing outer tooth 211 and a locking outer tooth 212; the pushing outer tooth 211 can push the first fixing screw 21 and the second fixing screw 31 to move forwards, the locking outer tooth 212 can be fixed with the locking inner tooth, and the first fixing screw 21 and the second fixing screw 31 are locked with the left inner slide insert 11 and the right inner slide insert 12; the pushing outer teeth 211 are correspondingly provided with a pushing nut 213 and a correction spring 215, and the pushing nut 213 and the correction spring 215 are sleeved on the fixing screw rod. Specifically, be equipped with on the propulsion nut 213 with promote outer tooth 211 corresponding promotion in tooth (not shown in the figure), tooth 212 and the interior tooth of locking let clamping screw and interior capable position mold insert 1 fixed connection in tooth in promoting outer tooth 211 and the promotion, in addition, also can not use propulsion nut 213, directly will impel in the tooth sets up in tunnel connection piece, installation hanging table or motor support, as long as can with the last promotion of clamping screw outer tooth 211 corresponding can, but the utility model discloses in preferably advance propulsion nut 213. Specifically, the push nut 213 and the aligning spring 215 can abut against each other, the push nut 213 can push the fixing screw forward, and the aligning spring 215 can align the position of the push nut 213 and engage with the push outer teeth 211 to connect the fixing screw to the inner slide insert 1, but the spring wire of the aligning spring 215 may be square, flat, or circular, but the maximum outer diameter is 4mm or less. Specifically, the first fixing screw 21 and the second fixing screw 31 have the same design concept and principle, and only have some differences in the partial distance dimension. The locking outer tooth 212 of the fixing screw is arranged at the front end of the fixing screw and is fixedly connected with the inner slide insert 1 and locked. In addition, the fixed structure is further provided with an installation hanging table, a fixing screw is arranged inside the installation hanging table, a tunnel connecting block and a motor support, the fixed structure is connected with the main walking position core-pulling structure 4 through a movable connecting piece arranged on the core-pulling assembly 43 and can move back and forth under the action of the core-pulling oil cylinder 46, when the installation hanging table moves to protrude to a certain position, an operator can manually install the inner walking position insert 1 on the installation hanging table, after the installation is finished, a signal is given to a PLC (mold control system), the PLC controls the motor to rotate in the forward direction, namely, the motor drives the fixing screw to rotate, the outer teeth 211 are pushed to be matched with the pushing nut 213 to push the fixing screw to move forward, and the outer locking teeth 212 arranged on the fixing screw can be connected with and locked by the inner walking position insert 1. Specifically, a screw rod stopping table (not shown in the figure) is arranged inside the mounting hanging table, a screw rod limiting table 214 is arranged on the fixing screw rod, and the fixing screw rod can be limited after the screw rod limiting table 214 is attached to the end face of the locking outer tooth 212. When the mounting hanging table is mounted on the inner slide insert 1, the outer teeth 211 pushed by the fixing screw move forwards, when the screw limiting table 214 moves to the screw stopping table, the screw stopping table limits the screw limiting table 214, and the fixing screw continuously rotates to lock the inner slide insert 1. Specifically, the length of the pushing outer teeth 211 on the fixing screw is less than or equal to two thirds of the locking outer teeth 212 on the fixing screw; the distance between the pushing outer teeth 211 on the fixing screw and the screw stop table is longer than the distance between the locking outer teeth 212 on the fixing screw and the pushing outer teeth 211 by the length of the pushing outer teeth 211, so that the fixing screw can better move forward and backward, the inner slide insert 1 is locked or loosened, and the forward and backward movement of the main slide 5 and the taking out of subsequent die-cast products are facilitated.

As an alternative embodiment, as shown in fig. 3 to 4, the fixing structure further includes a tunnel connection block and a motor bracket, and the motor bracket can be fixedly connected with the tunnel connection block; the fixing structure also comprises a motor and a speed changer, the motor and the speed changer are fixedly connected with the motor bracket, the motor can provide power for the fixing screw rod when being locked, and the speed changer can convert the output speed of the motor; the pushing nut 213 and the correcting spring 215 are arranged in the tunnel connecting block, the correcting spring 215 is sleeved at the top end of the connecting part of the motor bracket and the tunnel connecting block, and the maximum outer diameter of the screw for fixing the outer tooth 211 on the screw to the motor bracket section is not larger than the minimum outer diameter of the screw tooth. In particular, the motor may be, but is not limited to, a servo motor, a transmission motor, and a stepping motor. Still be provided with heat insulating block 244 and motor connecting block on the fixed knot structure, motor and derailleur fixed connection are provided with heat insulating block 244 between derailleur and the motor connecting block 246, isolate the heat through heat insulating block 244, and motor connecting block 246 is then direct and motor support fixed connection for it is fixed with motor and derailleur. Specifically, a transmission connecting rod is further arranged inside the motor connecting block 246, and the transmission connecting rod is movably connected with the fixing screw rod (in a riveted joint manner) and is hidden inside the motor connecting block 246. Specifically, the transmission connecting rod comprises a first transmission connecting rod 28 and a second transmission connecting rod 38, the transmission comprises a first transmission 25 and a second transmission 35, the first transmission 25 is fixedly connected with the first motor 26, and the second transmission 35 is fixedly connected with the second motor 36. The tunnel connecting block is provided with a motor support, and the fixing structure is fixedly connected with the main slide core-pulling structure 4 through a first movable connecting piece 27 and a second movable connecting piece 37. Concretely, platform fixed connection is hung with the installation to the tunnel connecting block, and after the manual work was hung the platform with interior position mold insert 1 installation to the installation, press the signal key signals for PLC, PLC control motor work makes interior position mold insert 1 fixed with main position 5 of going, guarantees to be fixed with interior position mold insert 1's accuracy when inside the income material water of irritating, prevents to cause the influence because the dislocation to the formation of product. After the inner slide insert 1 is fixed, a signal is sent to the die-casting machine to perform die assembly, and after the movable die structure and the fixed die structure are locked, the die-casting machine automatically injects feed water into the cavity of the die to perform injection, so that a product can be manufactured in the cavity.

As an alternative embodiment, as shown in fig. 3 to 4, a limiting block 245 and a photoelectric sensor 241, a contact switch or an inductive switch of any one of the travel switches are arranged on the motor bracket; the limiting block 245 is arranged on the inner side of the motor support, the photoelectric sensor 241 is arranged on the outer side of the motor support, and the photoelectric sensor can transmit signals to the PLC. Specifically, the utility model discloses selected photoelectric sensing ware 241 in photoelectric sensing ware 241, contact switch or travel switch three kinds, made photoelectric sensing ware 241 cooperate with stopper 245 and transmit the signal, stopper 245 is in the utility model discloses well preferred is the piece that is in the light. Specifically, photoelectric sensing ware 241 is provided with a plurality ofly (the utility model discloses well preferred 4), and photoelectric sensing ware is when being connected with the motor support, is provided with the heat insulating sheet (not shown in the figure) on the connection position, and the heat transfer that the heat insulating sheet of setting can be on the separation motor support gives photoelectric sensing ware 241, avoids photoelectric sensing ware 241 overheated and leads to the damage. The specific working process of the limiting block 245 and the photoelectric sensor 241 is as follows: since the position distance between the limiting block 245 and the locking outer tooth 212 is calculated during design and the limiting block 245 is fixed on the fixing screw, when the screw limiting table 214 is tightly attached to the screw stopping table, light of the first group of photoelectric sensors 242 is blocked by the limiting block 245, at this moment, the first group of photoelectric sensors 242 give a signal to the PLC, when the PLC receives the signal, the power supply of the motor is cut off in a delayed manner (which may not be delayed, specifically determined according to actual use requirements), at this moment, the motor stops working, and the fixing screw is locked with the inner positioning insert 1. The same is true when the fixed screw rod is withdrawn, when the motor moves reversely, the fixed screw rod is withdrawn outwards, when the limiting block 245 is withdrawn to the position of the second group of photoelectric sensors 243 to block infrared light, the PLC receives a signal and then cuts off the power supply of the motor, at the moment, the fixed screw rod stops moving, and the screw rod is withdrawn in place. It should be noted that the distance between the screw stop platforms arranged on the tunnel connection block is the same as the distance between the two sets of photoelectric sensors, and the position where the limiting block 245 is installed is the position corresponding to the infrared light after the inner-row position insert 1 and the main-row position 5 are locked. The switching of the power supply is realized through the transmission of signals, the automation operation is realized to a certain extent, and the production efficiency is improved.

As an alternative embodiment, as shown in fig. 6 to 7, the main slide core structure 4 includes a moving plate 41 and a core back guide rail 42; the moving plate 41 can slide on the core back guide rail 42. Specifically, the moving plate 41 is provided with two avoiding grooves (not shown in the figure) for placing the tunnel connection block on the fixed structure. Since the first and second fixing screws 21 and 31 disposed in the first and second fixing structures 2 and 3 are disposed in a crossing manner, the avoiding groove is disposed asymmetrically, and since the tunnel connection block and the mounting hanging table are mounted on the moving plate 41 in an oblique direction, the avoiding groove is disposed in an irregular shape. The moving plate 41 is fixedly connected to the core back assembly 43 in addition to the core back guide rail 42, and the moving plate 41 can move on the core back guide rail 42 under the action of the core back cylinder 46 and the core back assembly 43. The moving plate 41 is disposed to save an occupied space, and the moving position of the moving plate 41 is defined by the core back guide rail 42.

As an alternative embodiment, as shown in fig. 1, the main slide core-pulling structure 4 further includes a stop table 45; the moving plate 41 can abut against the stop table 45, and the stop table 45 can limit the sliding position of the moving plate 41. Specifically, the stop table 45 can limit the position of the moving plate 41 by cooperating with the core back guide rail 42.

As an alternative embodiment, as shown in fig. 1, the main slide core-pulling structure 4 further includes an oil cylinder bracket 47 and a core-pulling oil cylinder 46; the core-pulling oil cylinder 46 is fixedly connected with the oil cylinder bracket 47, and the core-pulling oil cylinder 46 is connected with the core-pulling assembly 43 through a connecting rod 48 and can drive the core-pulling assembly 43 to move. Specifically, the oil cylinder support 47 is designed to be U-shaped, the core pulling oil cylinder 46 is arranged on the oil cylinder support 47, the core pulling guide rails 42 are two, the two core pulling guide rails 42 are also fixedly connected with the oil cylinder support 47, the core pulling assembly 43 and the moving plate 41 are arranged inside a support body of the oil cylinder support 47, and the occupied space of the main slide core pulling structure 4 can be saved. In addition, the core-pulling cylinder 46 is used as a moving part on the main slide core-pulling structure 4, and can drive the core-pulling assembly 43 and the moving plate 41 to move, and the connection between the core-pulling cylinder 46 and the core-pulling assembly 43 is realized through a connecting rod 48 to transmit force.

As an optional embodiment, after being locked with the left inner slide insert 11 and the right inner slide insert 12, the first fixing screw 21 and the second fixing screw 31 may be 20mm to 60mm longer than the mounting hanging table, the diameter of the fixing screws is 3 mm to 20mm, the mounting hanging table is in the shape of a rectangular cylinder, a square cylinder, a cylinder, an elliptic cylinder or a prism, the inner hole is in a perfect circle shape, the diameter of the inner hole is 3 mm to 20mm, the length is 50mm to 500mm, and the maximum outer diameter is 20mm to 50mm; in addition, an X-shaped cross tunnel is arranged in the main row position 5, and the shape and the size of an inner hole of the tunnel correspond to the appearance of the mounting hanging table. Specifically, an open or closed concave-convex male-female tenon is arranged at the joint of the fixing screw and the motor, and a space for avoiding is reserved, wherein the size of the space for avoiding is 1-80mm.

As an alternative embodiment, as shown in fig. 1 and 7, the main slide core-pulling structure 4 further includes a core-pulling assembly 43, the core-pulling assembly 43 is fixedly connected with the moving plate 41, and the core-pulling assembly 43 can move synchronously with the moving plate 41. The core-pulling assembly 43 comprises a front pushing platform 431, a pull-back stop block 432, a pull-back hanging platform 433 and a resistance spring 44; the forward push stand 431 can abut against the pull-back stopper 432 by the resistance spring 44, and the return hanging stand 433 can be fixedly connected to the pull-back stopper 432. Specifically, the utility model discloses a working process as follows: a die casting machine (a die casting machine control system) sends a signal to control the core-pulling oil cylinder 46 to push forwards, the core-pulling assembly 43 moves forwards under the action of the core-pulling oil cylinder 46, when the core-pulling assembly 43 starts to move forwards, because the return hanging table 433 of the acting force of the resistance spring 44 is tightly attached to the return stop block, the core-pulling assembly 43 can transmit the pushing force to the moving plate 41 through the resistance spring 44, therefore, the core-pulling assembly 43 and the moving plate 41 can also move forwards simultaneously, when the front part of the moving plate 41 is abutted to the stop table 45, the moving plate 41 stops moving forwards, at the moment, the mounting hanging table is still in a state of being concave to the main traveling position 5, so that the inner traveling position insert 1 cannot be mounted, at the moment, the core-pulling assembly 43 can still continue to move forwards, under the power action of the core-pulling assembly 43, the resistance spring 44 can be compressed, when the front pushing table 431 on the core-pulling assembly 43 is tightly attached to the return hanging table 433, the stop, when the front push table 431 compresses the resistance spring 44 to continue to push forwards, the core-pulling assembly 43 drives the movable connecting piece to push out the fixed structure, so that the mounting hanging table protrudes out of the main slide 5 to facilitate manual mounting of the inner slide insert 1, when the inner slide insert 1 is mounted, a signal is given to a PLC (mold control system), the PLC controls a motor to rotate forwards, a fixing screw rod is pushed forwards to lock the inner slide insert 1 and the main slide 5, when the inner slide insert 1 is locked, a photoelectric sensor 241 sends a signal to the PLC, the PLC controls a motor to stop working and simultaneously sends a signal to a die-casting machine, the die-casting machine carries out die assembly, feeding and injection actions after receiving the signal, when the injection action is finished, the PLC controls the motor to rotate backwards to drive the fixing screw rod to withdraw backwards, so that the inner slide insert 1 is separated from the main slide 5, when the inner slide insert 1 and the main slide 5 are separated, the photoelectric sensor 241 sends a signal to the PLC, the PLC receives the signal to immediately control the motor to stop working and sends a signal to the die-casting machine, the die-casting machine performs core-pulling and die-opening actions after receiving the signal, at the moment, the main slide core-pulling structure starts to work and quits backwards, when the main slide core-pulling structure 4 quits backwards and moves, the core-pulling connecting piece firstly drives the fixed structure to quit backwards, the core-pulling connecting piece is continuously retreated along with the main slide core-pulling structure 4, the pull-back block 432 is tightly attached to the return hanging table 433 and then drives the main slide 5 to quit until the main slide 5 completely quits the cavity product, at the moment, the die-casting piece is taken out and then sends a signal to the die-casting machine, the core-pulling oil cylinder 46 is pushed forwards after the die-casting machine receives the signal, the main slide 5 resets, the inner slide insert 1 starts to be installed, and the cycle operation is repeated. The utility model discloses a main line position structure of loosing core 4 drives first clamping screw 21 and the removal of second clamping screw 31 on first fixed knot structure 2 and the second fixed knot construct 3, utilizes the manual work to be connected clamping screw and interior line position mold insert 1, can save time in process of production, simplifies manufacturing process, can improve production efficiency, practices thrift manufacturing cost to a certain extent.

The embodiment is only a specific example and does not indicate that the present invention is implemented in such a manner.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. The die-casting mechanism of the die-casting die for the products with the special-shaped cavities with the large inner part and the small outer part is characterized by being used for stripping the products with the special-shaped cavities with the large inner part and the small outer part and comprising an inner slide insert (1), a main slide (5), a main slide core-pulling structure (4) and a fixing structure; the inner slide insert (1) and the main slide (5) can be matched with a fixed die structure and a movable die structure to form a cavity of the cavity product; the fixing structure is respectively fixedly connected with the inner slide insert (1) and the main slide core-pulling structure (4); the main slide core-pulling structure (4) can drive the fixed structure to move, so that the cavity product is completely demoulded.

2. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 1, wherein the fixing structure comprises a fixing screw and an installation hanging table, the fixing screw is arranged inside the installation hanging table, and the fixing screw can move synchronously with the installation hanging table under the action of the main slide core-pulling structure (4);

the fixing structure comprises a first fixing structure (2) and a second fixing structure (3), and the first fixing structure (2) and the second fixing structure (3) are arranged inside the cavity product in a crossed mode.

3. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 2, wherein the inner slide insert (1) is provided with a locking inner tooth; the fixed screw is provided with an outer pushing tooth (211) and an outer locking tooth (212); the pushing outer tooth (211) can push the fixing screw rod to move forwards, and the locking outer tooth (212) can be fixed with the locking inner tooth, so that the fixing screw rod is locked with the inner slide insert (1); the pushing outer teeth (211) are correspondingly provided with a pushing nut (213) and a correcting spring (215), and the pushing nut (213) and the correcting spring (215) are sleeved on the fixing screw rod.

4. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 3, wherein the fixing structure further comprises a tunnel connecting block and a motor bracket, and the motor bracket can be fixedly connected with the tunnel connecting block; the fixing structure further comprises a motor and a transmission, the motor and the transmission are fixedly connected with the motor bracket, the motor can provide power for the fixing screw rod when being locked, and the transmission can convert the output speed of the motor;

the propelling nut (213) and the correcting spring (215) are arranged in the tunnel connecting block, the correcting spring (215) is sleeved at the top end of the connecting part of the motor bracket and the tunnel connecting block, and the maximum outer diameter of a fixing screw rod from the pushing outer tooth (211) on the fixing screw rod to the motor bracket section is not larger than the minimum outer diameter of the upper thread of the pushing outer tooth.

5. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 4, wherein a limiting block (245), a photoelectric sensor (241), a contact switch or an induction switch of a travel switch is arranged on the motor support; the limiting block (245) is arranged on a fixing screw rod in the motor support and corresponds to the photoelectric sensor (241), the photoelectric sensor (241) is arranged on the outer side of the motor support, the photoelectric sensor (241) can transmit signals to a PLC, and the motor is controlled to work through the PLC.

6. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 1, wherein the main slide core-pulling structure (4) comprises a moving plate (41) and a core-pulling guide rail (42); the moving plate (41) can slide on the core back guide rail (42).

7. The demolding mechanism of the die-casting die for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 6, wherein the main slide core-pulling structure (4) further comprises a stop table (45); the moving plate (41) can be abutted against the stopping table (45), and the stopping table (45) can limit the sliding position of the moving plate (41).

8. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside according to claim 7, characterized in that the main slide core-pulling structure (4) further comprises a core-pulling assembly (43), the core-pulling assembly (43) is fixedly connected with the moving plate (41), and the core-pulling assembly (43) can move synchronously with the moving plate (41).

9. The demolding mechanism of the die-casting mold for the product with the special-shaped cavity with the large inside and the small outside as claimed in claim 8, wherein the core pulling assembly (43) comprises a front pushing platform (431), a pull-back stop block (432), a return hanging platform (433) and a resistance spring (44); the front push platform (431) can be abutted against a pull-back stop block (432) under the action of a resistance spring (44), and the return hanging platform (433) can also be abutted against the pull-back stop block (432).

10. The demolding mechanism of the die-casting die for the product with the special-shaped cavity with the large inside and the small outside according to claim 8, wherein the main slide core-pulling structure (4) further comprises an oil cylinder bracket (47) and a core-pulling oil cylinder (46); the core-pulling oil cylinder (46) is fixedly connected with the oil cylinder support (47), and the core-pulling oil cylinder (46) is connected with the core-pulling assembly (43) through a connecting rod (48) and can drive the core-pulling assembly (43) to move.

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