Injection mold convenient to it is ejecting
Technical Field
The utility model relates to the technical field of injection molds, in particular to an injection mold convenient to eject.
Background
The mould is used for obtaining various moulds and tools of required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods in industrial production, and the injection mold is a main molding device for pressing hot raw materials by using a molding mould and cooling to prepare plastic products with various shapes.
According to the injection mold disclosed by application number 202123090169.5, the ejector block can be stably moved in the ejection process by the limiting block with the arc-shaped structure, meanwhile, the positioning block on the side surface of the ejector block can effectively limit the movement of the ejector block, the ejector structures inside the upper mold and the lower mold can be synchronously operated by the double-layer ejector structure, and the product can be effectively ejected.
The following problems still exist in the actual use process:
At present, a traditional injection production mold needs to be demolded after injection molding of a workpiece, and in the demolding process, most of the injection production mold is ejected from a mold cavity through manual removal or ejection structures, but most of traditional ejection structures are ejector pins, scratch is easily caused on the surface of the workpiece in the ejection process, the workpiece is damaged, the quality of the workpiece is affected, and the manual removal is relatively time-consuming.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides the injection mold convenient to eject, which has the advantages of having double buffering effects when the ejector pins eject a workpiece, avoiding scratch on the surface of the workpiece, being convenient for personnel to adjust the ejection height of the ejector pins and having higher flexibility, and solving the problems in the background art.
The utility model provides a technical scheme that an injection mold convenient to eject comprises a base, wherein the upper surface of the base is fixedly connected with at least one guide post, the surface of the guide post is sleeved with a connecting plate, and the top of the connecting plate is provided with at least one thimble assembly;
The thimble assembly comprises a sleeve, a thimble main body, a movable plate, a buffer spring, sliding grooves, sliding blocks and a buffer pad, wherein the sleeve is arranged on the top side of the connecting plate, the thimble main body is arranged in the sleeve, the movable plate is arranged at the bottom end of the thimble main body, the buffer spring is arranged on the bottom surface of the thimble main body, the sliding grooves are formed in the two side surfaces of the sleeve, the sliding blocks are arranged on the two side surfaces of the movable plate, the sliding blocks are arranged in the sliding grooves, and the buffer pad is arranged at the inner bottom of the sleeve.
Preferably, the square is all fixedly connected with at the upper surface both ends of base, one side of square and connecting plate is provided with drive assembly, drive assembly is including fixed block, adjustment tank, double-screw bolt, nut, drive cylinder and gyro wheel, one side surface mounting of connecting plate has the fixed block, and one side of fixed block is the inclined plane, the adjustment tank has been seted up to the inside of fixed block, one side surface fixedly connected with double-screw bolt of connecting plate, the surface threaded connection of double-screw bolt has the nut, one side surface mounting of square has drive cylinder, drive cylinder's output shaft fixedly connected with gyro wheel.
Preferably, the sleeve is fixedly connected with the top side of the connecting plate, the thimble main body is in sliding connection with the inside of the sleeve, the movable plate is fixedly connected with the bottom end of the thimble main body, the buffer spring is sleeved on the surface of the thimble main body, the sliding grooves are formed in the outer walls of the two sides of the sleeve, the sliding blocks are fixedly connected with the two sides of the movable plate, the buffer pad is placed at the inner bottom of the sleeve, and the top of the buffer pad is attached to the movable plate.
Preferably, the top of square installs the bed die, the equal fixedly connected with guide bar in upper surface four corners department of bed die, the surface sliding connection of guide bar has the upper die, the runner is installed at the top of upper die.
Preferably, the four corners of the upper surface of the lower die are fixedly connected with positioning rods, and the four corners of the lower surface of the upper die are provided with positioning holes corresponding to the positioning rods.
Preferably, the top end of the buffer spring is fixedly connected with the inner top wall of the sleeve, and the bottom end of the buffer spring is fixedly connected with the movable plate.
Preferably, the stud is located inside the adjusting groove, and one side surface of the nut is tightly attached to the outer side of the fixed block.
Preferably, reset disc springs are fixedly connected to four corners of the upper surface of the connecting plate, and the top ends of the reset disc springs are fixedly connected with the bottom of the lower die.
Compared with the prior art, the utility model has the following beneficial effects:
1. This injection mold convenient to it is ejecting, through being provided with the thimble subassembly, can play dual buffering effect when ejecting the work piece, avoid the work piece to be scratched by the thimble, when the ejecting work piece of thimble main part, the top atress of thimble main part makes it drive the fly leaf and moves down, makes buffer spring take place deformation in the removal process, can play the cushioning effect through buffer spring's deformation to the cooperation blotter can absorb remaining impact force, plays dual buffering effect, effectively protects the work piece.
2. This injection mold convenient to it is ejecting through being provided with drive assembly, can adopt cylinder drive ejecting work piece, and degree of automation is high, and the ejecting work piece of convenience personnel carries out the drawing of patterns operation to through unscrewing the nut, the horizontal position of adjustable thimble, the ejecting height of adjustable thimble, easy operation is understandable, and the flexibility is high.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an injection mold device for facilitating ejection according to the present utility model;
FIG. 2 is a schematic diagram of a lower mold structure of an injection mold with easy ejection according to the present utility model;
FIG. 3 is a schematic view of a thimble assembly of an injection mold for facilitating ejection according to the present utility model;
fig. 4 is an enlarged schematic view of the structure of the injection mold at a in fig. 1, which is convenient for ejection.
1, A base, 2, a guide post, 3, a connecting plate, 4, a thimble assembly, 401, a sleeve, 402, a thimble main body, 403, a movable plate, 404, a buffer spring, 405, a chute, 406, a slide block, 407, a buffer pad, 5, a driving assembly, 501, a fixed block, 502, an adjusting groove, 503, a stud, 504, a nut, 505, a driving cylinder, 506, a roller, 6, a square, 7, a reset disc spring, 8, a lower die, 9, a guide rod, 10, an upper die, 11, a runner, 12 and a positioning rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3, an injection mold convenient for ejection includes a base 1, at least one guide post 2 is fixedly connected to an upper surface of the base 1, a connecting plate 3 is sleeved on a surface of the guide post 2, at least one thimble assembly 4 is arranged at the top of the connecting plate 3, the thimble assembly 4 includes a sleeve 401, a thimble main body 402, a movable plate 403, a buffer spring 404, a chute 405, a slider 406 and a buffer pad 407, the sleeve 401 is arranged at the top side of the connecting plate 3, the thimble main body 402 is arranged in the sleeve 401, the movable plate 403 is arranged at the bottom end of the thimble main body 402, the buffer spring 404 is arranged at the bottom surface of the thimble main body 402, the chute 405 is arranged on two side surfaces of the sleeve 401, the slider 406 is arranged at two side surfaces of the movable plate 403 and is positioned in the chute 405, and the buffer pad 407 is arranged at the inner bottom of the sleeve 401;
by the aid of the ejector pin assembly 4, double buffering effects can be achieved when the workpiece is ejected, the workpiece is prevented from being scratched by the ejector pins, and the workpiece is effectively protected.
Referring to fig. 1 to 3, a sleeve 401 is fixedly connected with the top side of a connecting plate 3, a thimble main body 402 is slidably connected with the inside of the sleeve 401, a movable plate 403 is fixedly connected with the bottom end of the thimble main body 402, a buffer spring 404 is sleeved on the surface of the thimble main body 402, sliding grooves 405 are formed in the outer walls of two sides of the sleeve 401, sliding blocks 406 are fixedly connected with the two sides of the movable plate 403, a buffer pad 407 is placed at the inner bottom of the sleeve 401, the top is attached to the movable plate 403, the top end of the buffer spring 404 is fixedly connected with the inner top wall of the sleeve 401, and the bottom end of the buffer spring 404 is fixedly connected with the movable plate 403;
When the ejector pin main body 402 ejects a workpiece, the top end of the ejector pin main body 402 is stressed, so that the ejector pin main body 402 drives the movable plate 403 to move downwards, the buffer spring 404 deforms in the moving process, the buffer effect can be achieved through the deformation of the buffer spring 404, and the buffer pad 407 can absorb the residual impact force to achieve the effect of double buffering.
Referring to fig. 1 and 4, two ends of the upper surface of the base 1 are fixedly connected with a square block 6, one side of the square block 6 and one side of the connecting plate 3 are provided with a driving assembly 5, the driving assembly 5 comprises a fixed block 501, an adjusting groove 502, a stud 503, a nut 504, a driving cylinder 505 and a roller 506, one side surface of the connecting plate 3 is provided with the fixed block 501, one side of the fixed block 501 is an inclined plane, the inside of the fixed block 501 is provided with the adjusting groove 502, one side surface of the connecting plate 3 is fixedly connected with the stud 503, the surface of the stud 503 is in threaded connection with the nut 504, one side surface of the square block 6 is fixedly provided with the driving cylinder 505, the output shaft of the driving cylinder 505 is fixedly connected with the roller 506, the stud 503 is positioned in the adjusting groove 502, and one side surface of the nut 504 is tightly attached to the outside of the fixed block 501;
Through being provided with drive assembly 5, make things convenient for personnel ejecting work piece to carry out the drawing of patterns operation to through unscrewing nut 504, the horizontal position of adjusting fixed block 501, the ejecting height of adjustable thimble, the personnel of being convenient for operate and understand.
Referring to fig. 1 to 2, a lower die 8 is mounted at the top of a square 6, guide rods 9 are fixedly connected to four corners of the upper surface of the lower die 8, an upper die 10 is slidably connected to the surface of the guide rods 9, a runner 11 is mounted at the top of the upper die 10, positioning rods 12 are fixedly connected to four corners of the upper surface of the lower die 8, positioning holes corresponding to the positioning rods 12 are formed in four corners of the lower surface of the upper die 10, reset disc springs 7 are fixedly connected to four corners of the upper surface of a connecting plate 3, and the top ends of the reset disc springs 7 are fixedly connected with the bottom of the lower die 8;
In the mold closing process, accurate positioning is performed through the guide rod 9 and the positioning rod 12, the driving cylinder 505 drives the roller 506 to reset after mold release is completed, and then the connecting plate 3 and the thimble assembly 4 reset through the reset disc spring 7.
In the utility model, the working principle of the device is as follows:
The hot raw material is added into a forming cavity between an upper die 10 and a lower die 8 from a runner 11 for compression forming, in the die closing process, the guide rod 9 and the positioning rod 12 are used for accurately positioning, when the die is formed and cooled, a formed workpiece is required to be demoulded, the upper die 10 is separated from the lower die 8, then a driving cylinder 505 is started to push a roller 506 to move horizontally, so that the roller 506 pushes an inclined surface part on a fixed block 501, the fixed block 501 and a connecting plate 3 can be pushed to move upwards under the limiting effect of a guide post 2, meanwhile, a thimble assembly 4 is driven to move upwards, the top end of a thimble main body 402 gradually applies supporting force to the workpiece, the workpiece is ejected, the top end of the thimble main body 402 is stressed when the thimble main body 402 ejects the workpiece, a movable plate 403 is driven to move downwards, a buffer spring 404 is deformed in the moving process, a buffer effect can be achieved through the deformation of the buffer spring 404, and the buffer cushion 407 can absorb residual impact force, the effect can be achieved, the workpiece can be protected from being scratched, and the thimble main body 402 can be driven to slide in the chute 405 to move, so that the main body 402 moves more stably;
When the ejection height is required to be adjusted, a person unscrews the nut 504, increases the distance between the nut 504 and the fixed block 501, then moves the horizontal position of the fixed block 501, adjusts the ejection height of the ejector pin assembly 4 by adjusting the contact position of the roller 506 and the inclined surface of the fixed block 501, and tightens the nut 504 after the adjustment is completed to tightly attach one side of the nut 504 to the fixed block 501, so that the ejection position can be fixed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.