Plastic stamping die for preventing plastic from sticking to die

Abstract

The invention discloses a plastic stamping die for preventing plastic from sticking to the die, and the invention relates to the technical field of plastic stamping dies, comprising a stamping die body and a processing assembly; an inner die body is arranged in the stamping die body; a transverse movement assembly is arranged at one end of a first processing rod away from a second processing rod; a processing assembly is arranged in the first processing rod; a long notch is arranged at the bottom of the first processing rod; the transverse movement assembly is used to drive the first processing rod to move; the processing assembly comprises a central rotating rod rotatably arranged in the first processing rod; a brush tube, a scraping brush tube and an electric spark rod are installed in a centrally symmetrical shape on the outer side of the central rotating rod; the plastic stamping die for preventing plastic from sticking to the die can use the scraping brush tube to scrape and brush from the left side to the right side of the inner cavity of the inner die body, and after the impurities and dirt in the inner cavity of the inner die body are scraped and cleaned, the inner die body to be stamped can be cleaned and maintained when the inner die body is used, so as to avoid excessive accumulation of impurities and dirt on the inner surface of the inner die body, which affects the anti-sticking performance of the inner die body.

Description

Technical Field

[0001] The invention relates to the technical field of plastic stamping dies, in particular to a plastic stamping die for preventing plastic from sticking to the die. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low foaming molding. The coordinated changes of the mold convex, concave mold and auxiliary molding system can process a series of plastic parts of different shapes and sizes. The various tools and products used in our daily production and life, from the base and body shell of the machine tool to the embryo head screws, buttons and the shell of various household appliances, are closely related to the mold. The shape of the mold determines the appearance of these products, and the processing quality and precision of the mold also determine the quality of these products. Due to the different materials, appearances, specifications and uses of various products, the mold is divided into non-plastic molds such as casting molds, forging molds, die-casting molds, stamping molds, and plastic molds.

[0003] Existing plastic stamping molds often rely on manual lubrication to avoid smooth demolding when the plastic is stamped in the mold. Although smooth demolding can be achieved, the manual lubrication method is not only time-consuming and labor-intensive, but also has certain brushing dead angles and safety hazards. In addition, for the heat dissipation and cooling molding process of the mold, most of them directly set up cooling structures around the mold to directly exchange heat with the mold. Although the cooling effect can be achieved, the quality of plastic molding and the loss caused by the direct participation of the mold in heat exchange are irreversible damage. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plastic stamping mold for preventing plastic from sticking to the mold, comprising a stamping mold body, an inner mold body is embedded and installed on the inner side of the stamping mold body, the stamping mold body comprises an outer body block 1 and an outer body block 2, and the two are symmetrically installed on the inner mold 8, the plastic stamping mold for preventing plastic from sticking to the mold, through the two ends of the body, and the two have the same structure, the left and right sides of the stamping mold body are installed with hydraulic cylinders, and the outer body block 1 is telescopically installed with the outer body block 2 through the hydraulic cylinder;

[0005] It also includes a marking assembly, which is installed at the inner bottom of the inner mold body. The marking assembly includes a shielding member installed at the inner bottom of the inner mold body, a triggering member is installed at the bottom of the shielding member, a lifting column is installed at one end of the triggering member away from the shielding member, and the lifting column is fixedly installed in the inner mold body, and a marking steel stamp is installed on the top of the lifting column, and the marking steel stamp is installed by the lifting column and the inner mold body.

[0006] A processing assembly, which is installed on the inner side of the inner mold body, and includes a first processing rod installed on the inner side of the inner mold body, wherein the first processing rod and a second processing rod can be plugged into the same integral body, and the two have the same structure;

[0007] A temperature control assembly is installed in an inner cavity opened on the inner side of a stamping die, the temperature control assembly includes a ring frame sac body embedded in the inner cavity, an internal heat-conducting frame is fixedly installed on the inner side wall of the ring frame sac body, an external heat-conducting frame is fixedly installed on the outer side wall of the ring frame sac body, a heat transfer component is assembled between the internal heat-conducting frame and the external heat-conducting frame, and the heat transfer component is installed in the ring frame sac body, wherein the interior of the ring frame sac body is filled with gas that expands due to heat, and the ring frame sac body is sealed as a whole, and a layer of heat-resistant coating is applied on the inner and outer wall surfaces of the ring frame sac body to prevent the ring frame sac body from melting during continuous high-temperature heat conduction.

[0008] Preferably, the shielding member includes a covering plate installed on the top of the identification stamp, and the covering plate is embedded in the interior of the inner mold body, and a retracting body is hinged at one end of the covering plate away from the identification stamp, a torsion motor is fixedly installed at the bottom of the retracting body, a threaded sleeve is installed at the bottom of the torsion motor, and a threaded guide rod is also installed at the bottom of the torsion motor, a tensioning spring is installed at the bottom of the threaded sleeve and is sleeved on the threaded guide rod, a ring pad is fixedly connected to the bottom of the tensioning spring, and the ring pad is fixedly installed inside the inner mold body, a U-shaped steering cavity is opened inside the inner mold body, a steering guide strip is installed on the inner side of the U-shaped steering cavity, the left end of the steering guide strip is fixedly connected to the bottom of the threaded guide rod, a telescopic valve column is fixedly installed at the bottom of the jacking column, and the right end of the steering guide strip is fixedly installed at the bottom of the telescopic valve column, which is used to control the opening and closing of the telescopic valve column, and the opening and closing of the telescopic valve column controls the rising and falling movements of the jacking column, thereby controlling the lifting and lowering movements of the identification stamp.

[0009] Preferably, a bite opening is provided on the inner side of the inner mold body, and a chamfered partition is also fixedly installed on the inner side of the inner mold body, wherein the bite opening corresponds to the right end of the cover plate in a horizontal state, and is used to clamp and limit the right end of the cover plate to ensure that the cover plate completely covers the top of the logo stamp to prevent plastic from entering the cavity where the logo stamp is located or contaminating the logo stamp. The chamfered partition is installed between the logo stamp and the retracting body to provide unobstructed turning guidance when the cover plate is retracted into the inner mold body.

[0010] Preferably, a transverse movement assembly is installed at one end of the first processing rod away from the second processing rod, a processing assembly is installed inside the first processing rod, and a long notch is opened at the bottom of the first processing rod.

[0011] Preferably, the top of the first processing rod and the second processing rod are also jointly equipped with a top buckle ring for threaded installation on the top of the columnar stamping die body. An extension sleeve rod is also connected between the first processing rod and the transverse movement assembly, and between the second processing rod and the transverse movement assembly, for extending the vertical working height of the processing assembly. A magnetic suction head is assembled between the first processing rod and the second processing rod for magnetic suction installation in the middle position of the bottom inner side of the cylindrical inner mold body, and an anti-slip pad is fixedly installed on the bottom of the magnetic suction head.

[0012] Preferably, the transverse movement assembly includes a clamping rod body installed at an end away from the first processing rod, an adapter ring is installed at the end of the clamping rod body close to the first processing rod, and a dual-axis motor is installed at the end of the adapter ring close to the first processing rod. The whole is spherical, and a first hoop reinforcement bent pipe is installed at the end of the dual-axis motor away from the adapter ring, and a second hoop reinforcement bent pipe is installed at the end of the first hoop reinforcement bent pipe away from the dual-axis motor. The end of the second hoop reinforcement bent pipe away from the first hoop reinforcement bent pipe is fixedly connected to the first processing rod, and the dual-axis motor is rotatably mounted with the clamping rod body through the adapter ring, and the clamping rod body is clamped and mounted with the telescopic end of the telescopic push rod. The first processing rod can translate on the stamping die body through the cooperation of the clamping rod body and the telescopic push rod.

[0013] Preferably, the processing assembly includes a central rotating rod installed in the middle of the inner side of the first processing rod, and the tail end of the central rotating rod is connected to the double-axis motor through the guidance of the first hoop reinforcement bent tube and the second hoop reinforcement bent tube, the central rotating rod is rotatably installed with the first processing rod through the double-axis motor, the inner side of the central rotating rod is installed with an opening and closing rod in a circular array, the outer side of the central rotating rod is installed with a brush tube, a scraper brush tube and an electric spark rod in a centrally symmetrical shape, and the brush tube, the scraper brush tube and the electric spark rod are arranged in a circular array on the outer surface of the central rotating rod, and the opening and closing rods of the three are telescopically installed with the central rotating rod, and the three can be controlled by the opening and closing rod to protrude from the long notch and move the inner side of the inner mold body. The brush tube is used to apply anti-stick coating to the inner wall of the inner mold body to form a protective film to prevent the plastic from sticking to the mold. The scraper tube is used to scrape and clean the dust and impurities on the inner wall of the inner mold body. The spark rod is used to perform discharge corrosion treatment on the inner wall of the inner mold body, wherein the spark rod is symmetrically provided with angled electrodes at one end away from the central rotating rod for discharge, and utilizes the corrosion phenomenon generated during spark discharge to form a layer of tiny concave and convex patterns on the inner surface of the inner mold body, thereby increasing the friction coefficient of the inner surface of the inner mold body, preventing adhesion between the inner mold body and the plastic, and effectively improving the smoothness and flatness of the inner surface of the inner mold body, thereby improving the anti-stick performance of the inner mold body.

[0014] Preferably, a telescopic push rod is fixedly installed on the top side of the outer body block one, a slide groove is provided on the side of the top of the outer body block one away from the telescopic push rod, a card slot is provided on the right side of the top of the outer body block one, and the entire processing assembly can be embedded in the card slot, and the outer body block one and the outer body block two are jointly provided with an inner cavity, and the whole is arranged in a ring frame shape, and the outer body block one and the outer body block two are also jointly provided with an outer ring condensation cavity, and the outer ring condensation cavity is located on the outside of the inner cavity, and the outer ring condensation cavity is connected with the inner cavity, and a cooler is fixedly installed at the right end corner of the outer body block one, and the output end of the cooler is connected with the outer ring condensation cavity.

[0015] Preferably, sealing plug rings are fixedly installed on the inner and outer walls of the ring frame bag body, and shrinkage folding parts are also installed on the inner and outer walls of the ring frame bag body, and the shrinkage folding parts are symmetrically installed on the upper and lower sides of the built-in heat-conducting frame on the inner side wall of the ring frame bag body, and are also symmetrically installed on the upper and lower sides of the external heat-conducting frame on the outer side wall of the ring frame bag body. The thickness of the ring frame bag body is the same as the thickness of the inner cavity, and the width of the inner cavity is larger than the width of the ring frame bag body. The built-in heat-conducting frame can be installed on the inner wall surface of the inner cavity by means of the ductility of the shrinkage folding part, and the external heat-conducting frame can be inserted into the outer ring condensation cavity through the inner cavity by means of the ductility of the shrinkage folding part.

[0016] Preferably, the heat transfer component includes an external barb heat conductor and an internal barb heat conductor assembled on the inner side of the ring frame bag body, wherein the end of the external barb heat conductor away from the internal barb heat conductor is embedded in the external heat conductive frame through a sealing plug ring, the end of the internal barb heat conductor away from the external barb heat conductor is embedded in the internal heat conductive frame through a sealing plug ring, and the end of the external barb heat conductor close to the internal barb heat conductor is hooked and installed, and a thermal contact piece is embedded and installed at the end of the external barb heat conductor close to the internal barb heat conductor, and the thermal contact piece is movably installed between the external barb heat conductor and the internal barb heat conductor, wherein the external barb heat conductor is connected to the external heat conductive frame as a whole through the sealing plug ring, and the internal barb heat conductor is connected to the internal heat conductive frame as a whole through the sealing plug ring.

[0017] The present invention provides a plastic stamping die for preventing plastic from sticking to the die, which has the following beneficial effects:

[0018] The plastic stamping mold for preventing plastic from sticking to the mold uses a scraping brush tube to scrape and brush from the left side of the inner cavity of the inner mold body to the right side. After the impurities and dirt in the inner cavity of the inner mold body are scraped and cleaned, the inner mold body to be stamped can be cleaned and maintained when the inner mold body is used, avoiding the accumulation of excessive impurities and dirt on the inner surface of the inner mold body, which affects the anti-sticking performance of the inner mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the external structure of a plastic stamping die for preventing plastic from sticking to the die according to the present invention;

[0020] Figure 2 It is a schematic diagram of the disassembled structure of the outer wrapping block 1 and the outer wrapping block 2 of the present invention;

[0021] Figure 3 for Figure 2 A is an enlarged view of the structure;

[0022] Figure 4 It is a structural schematic diagram of the marking assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the trigger member and the inner mold body of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the shielding member of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the processing assembly of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the transverse shift assembly of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the processing component of the present invention;

[0028] Fig.10 It is a schematic structural diagram of the top buckle ring of the present invention;

[0029] Fig.11 It is a schematic diagram of the structure of the magnetic suction head and the anti-skid pad of the present invention;

[0030] Fig.12 It is a structural schematic diagram of the temperature control assembly of the present invention;

[0031] Fig.13 It is a schematic diagram of the partial assembly structure of the temperature control assembly and the stamping die body of the present invention;

[0032] Fig.14 It is a schematic structural diagram of the ring frame bag body and the heat transfer element of the present invention;

[0033] Fig.15 It is a schematic structural diagram of the heat transfer element of the present invention.

[0034] In the figure: 1. stamping die; 11. outer body block 1; 12. outer body block 2; 13. hydraulic cylinder; 14. telescopic push rod; 15. slide groove; 16. card slot; 17. inner cavity; 18. outer ring condensation cavity; 2. inner die; 21. bite mouth; 22. chamfered corner partition; 3. identification assembly; 31. shielding member; 32. trigger member; 33. lifting column; 34. identification stamp; 311. cover plate; 312. retracting body; 313. torsion motor; 314. threaded sleeve; 315. threaded guide rod; 316. tension spring; 321. sleeve ring pad; 322. steering guide strip; 323. telescopic valve column; 4. processing assembly; 41. first processing rod; 42. second processing rod; 43. transverse shift assembly; 44. Processing assembly; 45. Long notch; 46. Top buckle ring; 47. Extension sleeve; 48. Magnetic head; 49. Anti-skid pad; 431. Rod body; 432. Adapter ring; 433. Dual-axis motor; 434. First stirrup bend; 435. Second stirrup bend; 441. Central rotating rod; 442. Opening and closing rod; 443. Brushing tube; 444. Scraping brush tube; 445. Spark rod; 446. Angle electrode; 5. Cooling machine; 6. Temperature control assembly; 61. Ring frame capsule body; 62. Internal heat-conducting frame; 63. External heat-conducting frame; 64. Heat transfer element; 65. Sealing plug ring; 66. Shrinkage folding part; 641. External barbed heat conductor; 642. Internal barbed heat conductor; 643. Thermal contact piece. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0036] The first embodiment, as Figures 1 to 15 As shown, the present invention provides a technical solution: a plastic stamping die for preventing plastic from sticking to a mold, comprising a stamping die body 1, an inner die body 2 is embedded and installed on the inner side of the stamping die body 1, the stamping die body 1 comprises an outer body block 11 and an outer body block 2 12, and the two are symmetrically installed at both ends of the inner die body 2, and the two have the same structure, a hydraulic cylinder 13 is installed on both sides of the stamping die body 1, and the outer body block 11 is telescopically installed with the outer body block 2 12 through the hydraulic cylinder 13;

[0037] The marking assembly 3 is also included, and the marking assembly 3 is installed at the inner bottom of the inner mold body 2. The marking assembly 3 includes a shielding member 31 installed at the inner bottom of the inner mold body 2, and a trigger member 32 is installed at the bottom of the shielding member 31. A lifting column 33 is installed at the end of the trigger member 32 away from the shielding member 31, and the lifting column 33 is fixedly installed in the inner mold body 2. A marking steel stamp 34 is installed on the top of the lifting column 33, and the marking steel stamp 34 is lifted and installed with the inner mold body 2 through the lifting column 33; the shielding member 31 includes a covering plate 311 installed on the top of the marking steel stamp 34, and the covering plate 311 is embedded in the inner mold body 2, and a retracting body 312 is hinged at the end of the covering plate 311 away from the marking steel stamp 34, and a torsion motor 313 is fixedly installed at the bottom of the torsion motor 313. A threaded sleeve 33 is installed at the bottom of the torsion motor 313 14. A threaded guide rod 315 is also installed at the bottom of the torsion motor 313. A tension spring 316 is installed at the bottom of the threaded sleeve 314 and is sleeved on the threaded guide rod 315. A collar pad 321 is fixedly connected to the bottom of the tension spring 316, and the collar pad 321 is fixedly installed inside the inner mold body 2. A U-shaped steering cavity is opened inside the inner mold body 2. A steering guide strip 322 is installed on the inner side of the U-shaped steering cavity. The left end of the steering guide strip 322 is fixedly connected to the bottom of the threaded guide rod 315. A telescopic valve column 323 is fixedly installed at the bottom of the jacking column 33. The right end of the steering guide strip 322 is fixedly installed at the bottom of the telescopic valve column 323, which is used to control the opening and closing of the telescopic valve column 323. The opening and closing of the telescopic valve column 323 controls the rising and falling movements of the jacking column 33, thereby controlling the lifting and lowering movements of the identification stamp 34.

[0038] The processing assembly 4 is installed on the inner side of the inner mold body 2. The processing assembly 4 includes a first processing rod 41 installed on the inner side of the inner mold body 2. The first processing rod 41 and the second processing rod 42 can be plugged into the same whole and have the same structure.

[0039] The temperature control assembly 6 is installed in the inner cavity 17 opened on the inner side of the stamping die 1. The temperature control assembly 6 includes a ring frame bag body 61 embedded in the inner cavity 17, an inner wall of the ring frame bag body 61 is fixedly installed with an internal heat conductive frame 62, an outer wall of the ring frame bag body 61 is fixedly installed with an external heat conductive frame 63, a heat transfer component 64 is assembled between the internal heat conductive frame 62 and the external heat conductive frame 63, and the heat transfer component 64 is installed in the ring frame bag body 61.

[0040] A bite opening 21 is provided on the inner side of the inner mold body 2, and a chamfered partition plate 22 is also fixedly installed on the inner side of the inner mold body 2, wherein the bite opening 21 corresponds to the right end of the cover plate 311 in a horizontal state, and is used to clamp and limit the right end of the cover plate 311 to ensure that the cover plate 311 completely covers the top of the identification stamp 34 to prevent plastic from entering the cavity where the identification stamp 34 is located, or contaminating the identification stamp 34. The chamfered partition plate 22 is installed between the identification stamp 34 and the retraction body 312, and is used to provide unobstructed turning guidance when the cover plate 311 is recovered into the inner mold body 2. The side edge of the cover plate 311 close to the chamfered partition plate 22 is chamfered to facilitate the reduction of the resistance to inward retraction when the cover plate 311 is received into the inner mold body 2.

[0041] A telescopic push rod 14 is fixedly installed on the top side of the outer body block 11, and a slide groove 15 is provided on the side of the top of the outer body block 11 away from the telescopic push rod 14, which provides a guide track for the dual-axis motor 433 to slide on the inner side of the slide groove 15 to prevent the processing assembly 4 driven by the dual-axis motor 433 from deviating from the established movement route. A card slot 16 is provided on the right side of the top of the outer body block 11, and the entire processing assembly 4 can be embedded in the card slot 16. The inner cavity 17 is jointly provided inside the outer body block 11 and the outer body block 2 12, and the whole is arranged in a ring frame shape. The outer body block 11 and the outer body block 2 12 also have an outer ring condensation chamber 18, and the outer ring condensation chamber 18 is located on the outside of the inner cavity 17, and the outer ring condensation chamber 18 is connected to the inner cavity 17. A cooler 5 is fixedly installed at the right end corner of the outer body block 11, and the output end of the cooler 5 is connected to the outer ring condensation chamber 18.

[0042] When in use, the dual-axis motor 433 is started to drive the central rotating rod 441 to rotate 60 degrees counterclockwise, so that the bottom of the scraper tube 444 extends out of the long notch 45, and then the telescopic push rod 14 is used to push the processing assembly 4 from the left side of the inner mold body 2 to the right side, so that the scraper tube 444 can scrape and brush from the left side of the inner cavity of the inner mold body 2 to the right side, and the impurities and dirt in the inner cavity of the inner mold body 2 are scraped and cleaned; at this time, the processing assembly 4 is located on the right side of the inner cavity of the inner mold body 2 as a whole, and then the dual-axis motor 433 is used to drive the central rotating rod 441 to continue to rotate 60 degrees clockwise, and then the telescopic push rod 14 is used to push the brush tube 443 out of the long notch 45 through the telescopic push rod 14, so that the bottom of the brush tube 443 can contact the inner wall surface of the inner mold body 2, and then the telescopic push rod 14 is started again to pull the processing assembly 4 back from the right side of the inner mold body 2 to the left side, and the brush tube 443 is used to scrape and brush the inner cavity of the inner mold body 2 A layer of anti-stick coating is applied in the middle, and then the telescopic push rod 14 is extended and retracted to push the processing assembly 4 from the left side to the right side of the inner mold body 2, and then the anti-stick coating is evenly applied in the inner cavity of the inner mold body 2 to ensure that the anti-stick coating is evenly applied; then, with the cooperation of the adapter ring 432, the output shaft of the dual-axis motor 433 close to one end of the adapter ring 432 is started separately to rotate clockwise, that is, the two dual-axis motors 433 installed at both ends of the processing assembly 4 are started at the same time to rotate clockwise in the same direction, so that the entire processing assembly 4 can be installed in the inner cavity of the inner mold body 2 in a clockwise direction under the same-direction rotation and flipping of the two dual-axis motors 433, and flipped 270 degrees until the entire processing assembly 4 is parallel to the top of the stamping mold body 1, and then the telescopic push rod 14 is activated as needed to push the processing assembly 4 to the right to the inside of the slot 16, and the entire processing assembly 4 is embedded and installed in the slot 16.

[0043] The plastic is then injected into the inner mold body 2, and then the plastic inside the inner mold body 2 is stamped and formed by the stamping parts. During this period, the cooling machine 5 is started to continuously blow cold air into the outer ring condensation chamber 18; under the action of heat conduction, the inner cavity of the inner cavity 17 heats up rapidly, and at this time, the gas inside the ring frame bag body 61 embedded in the inner side of the inner cavity 17 expands due to the heat, and under the vertical limiting action of the top and bottom inner walls of the inner cavity 17, the expanded ring frame bag body 61 is deformed along the width direction of the inner cavity 17; thus, with the cooperation of the shrinkage folding part 66 of the ring frame bag body 61, the built-in heat conductive frame 62 drives the built-in barb heat conductor 642 to be squeezed closer to the direction of the inner mold body 2, and finally the built-in heat conductive frame 62 can be embedded in the inner wall of the inner cavity 17 close to the inner mold body 2.

[0044] At the same time, the external heat-conducting frame 63 drives the external barb heat conductor 641 to expand and extend in the direction away from the inner mold body 2, and finally the external heat-conducting frame 63 extends into the outer ring condensation cavity 18 through the inner cavity 17, and contacts with the cold air inside the outer ring condensation cavity 18; at this time, the heat of the built-in barb heat conductor 642 is transferred to the external heat-conducting frame 63 by the thermal contact piece 643 through the external barb heat conductor 641, and the heat is uniformly dissipated through the heat exchange between the external heat-conducting frame 63 and the cold air, thereby assisting the plastic cooling molding.

[0045] During the molding of the plastic inside the inner mold body 2, the threaded sleeve 314 is driven to twist the thread on the threaded guide rod 315 by starting the twisting motor 313, and the thread of the threaded sleeve 314 on the threaded guide rod 315 is twisted downward to continuously retract the threaded guide rod 315 into the retracting body 312. Under the guidance of the rounded partition plate 22, the cover plate 311 on the top of the retracting body 312 can be pulled back downward, so that the cover plate 311 and the retracting body 312 are retracted into the inner mold body 2 together; as the threaded guide rod 315 is continuously retracted into the retracting body 312, the tension spring 316 is also With continuous compression, the steering guide strip 322 fixedly connected to the bottom of the threaded guide rod 315 is tensioned toward the retracting body 312, thereby utilizing the retracting body 312 to provide a downward pulling force at the bottom of the telescopic valve column 323, and the telescopic valve column 323 controls the jacking column 33 to start, and the identification stamp 34 is lifted out from the inner side of the inner mold body 2 through the jacking column 33 until the tension spring 316 is completely squeezed between the retracting body 312 and the sleeve pad 321. At this time, the top of the identification stamp 34 is completely exposed from the inside of the inner mold body 2, and the corresponding code and model are printed on the bottom of the plastic part being cooled and formed.

[0046] Then, under the reverse start of the torsion motor 313 and the pushing action when the tension spring 316 is restored, the threaded guide rod 315 is twisted out from the inside of the retracting body 312, and the steering guide strip 322 can provide a pushing force for the bottom of the telescopic valve column 323, and the control lifting column 33 drives the identification stamp 34 to fall. At this time, the cover plate 311 is also synchronously ejected from the inside of the inner mold body 2, and finally the right end of the cover plate 311 is clamped and embedded in the bite mouth 21, and at the same time, the shielding protection of the top of the identification stamp 34 is completed, and the bottom of the inner cavity of the inner mold body 2 is closed again, ensuring that when the plastic is injected into the inner mold body 2, the bottom panel is smooth and clean, and can continue to provide the automatic printing function of the code and model for the next plastic stamping molding; through the above operations, the stamping mold can achieve anti-sticking stamping of the plastic, realize cooling molding of the plastic, realize the function of automatically printing the code and model of the plastic, and finally complete the anti-sticking stamping molding of the plastic.

[0047] Among them, by scraping and brushing the inner cavity of the inner mold body 2 from the left side to the right side through the scraper tube 444, after the impurities and dirt in the inner cavity of the inner mold body 2 are scraped and cleaned, the inner mold body 2 to be stamped can be cleaned and maintained when the inner mold body 2 is used, avoiding the accumulation of excessive impurities and dirt on the inner surface of the inner mold body 2, which affects the anti-sticking performance of the inner mold body 2.

[0048] During use, when the inner mold body 2 to be stamped and formed is cylindrical, the operating depth of the processing assembly 4 for cleaning and coating can be extended by installing an extension sleeve 47, and the processing assembly 4 can be additionally assisted to be magnetically positioned in the middle of the inner side of the inner mold body 2 by installing a magnetic suction head 48 and an anti-skid pad 49. At this time, the telescopic push rod 14 is set in a circular ring shape, and the tail end of the clamping rod body 431 is placed against the inner wall surface of the telescopic push rod 14, and the clamping rod body 431 is driven by the dual-axis motor 433 through the adapter ring 432 to rotate relative to the inner wall surface of the telescopic push rod 14. With the help of the telescopic push rod The inner wall of 14 faces the blocking limit at the tail end of the clamping rod body 431, so that the tangential centrifugal force generated by the relative rotation between the clamping rod body 431 and the telescopic push rod 14 provides a driving force for a circular rotation to the end of the processing assembly 4 in the reverse direction, thereby allowing the processing assembly 4 as a whole to perform a circular rotation motion inside the inner mold body 2. Combined with the role played by the internal structure of the processing assembly 4 itself, the model of the rectangular inner mold body 2 can be modified and applied to the cylindrical inner mold body 2, so that the stamping mold can adapt to molds of different shapes for fitting use.

[0049] After the plastic cooling molding is completed, the hydraulic cylinders 13 on the left and right sides of the stamping die 1 can be simultaneously started to separate the plastic part directly from the middle of the inner die 2, so that the plastic part can be directly separated from the middle of the inner die 2 and removed, and demolded directly from the middle to both ends in the longitudinal position of the plastic part, without causing unnecessary scratches and damages when the plastic part is ejected vertically upward, and without causing the part to be easily broken due to the thin molding thickness of the plastic part. At the same time, it can also avoid the plastic part being demolded vertically. The burrs generated will cause side tearing of the plastic parts. At the same time, during this period, the limited longitudinal ductility of the ring frame bag body 61 itself can be used to limit the continuous extension of the hydraulic cylinder 13, and when controlling the return contraction of the hydraulic cylinder 13, it can act as a spring to help the outer body block 11 and the outer body block 2 12 to quickly close into the same whole under the drive of the hydraulic cylinder 13. During this period, the heat remaining on the inside of the inner cavity 17 can be directly released to prevent affecting the heat conduction and heat dissipation process during the next plastic part molding.

[0050] The identification assembly 3 can automatically engrave the identification stamp 34 to be printed on the bottom of the plastic part during the cooling and molding process of the plastic part, that is, during the period when the plastic is gradually solidified and molded inside the inner mold body 2. On the one hand, it can ensure the integrity of the cavity at the bottom of the inner mold body 2 before molding. On the other hand, it can automatically engrave the identification stamp 34 on the bottom of the plastic part, avoiding the identification stamp 34 being directly fixed on the bottom of the inner mold body 2, and the shielding processing assembly 4 scraping and cleaning the inner cavity of the inner mold body 2, applying the anti-sticking layer, and performing the electro-corrosion treatment process. On the other hand, it can well hide the identification stamp 34 inside the inner mold body 2, and automatically expose it when it is used. When not in use, it is hidden inside the inner mold body 2, which not only does not take up space, but also does not affect the processing of other operations on the inner cavity of the inner mold body 2. It is also convenient to replace and store the identification stamp 34.

[0051] The second embodiment is based on the first embodiment. Figures 7 to 11 As shown, a transverse shift assembly 43 is installed at one end of the first processing rod 41 away from the second processing rod 42, a processing assembly 44 is installed inside the first processing rod 41, and a long notch 45 is opened at the bottom of the first processing rod 41; the top of the first processing rod 41 and the second processing rod 42 are also jointly installed with a top buckle ring 46 for threaded installation on the top of the columnar stamping die 1, and an extension sleeve rod 47 is also connected between the first processing rod 41 and the transverse shift assembly 43, as well as between the second processing rod 42 and the transverse shift assembly 43, for extending the vertical working height of the processing assembly 4, and a magnetic suction head 48 is assembled between the first processing rod 41 and the second processing rod 42, for magnetic suction installation in the middle position of the bottom inner side of the cylindrical inner die 2, and an anti-slip pad 49 is fixedly installed on the bottom of the magnetic suction head 48.

[0052] The transverse movement assembly 43 includes a clamping rod body 431 installed at an end away from the first processing rod 41, an adapter ring 432 is installed at the end of the clamping rod body 431 close to the first processing rod 41, and a dual-axis motor 433 is installed at the end of the adapter ring 432 close to the first processing rod 41. The whole is spherical, and a first hoop reinforcement bent pipe 434 is installed at the end of the dual-axis motor 433 away from the adapter ring 432, and a second hoop reinforcement bent pipe 435 is installed at the end of the first hoop reinforcement bent pipe 434 away from the dual-axis motor 433. The end of the second hoop reinforcement bent pipe 435 away from the first hoop reinforcement bent pipe 434 is fixedly connected to the first processing rod 41, and the dual-axis motor 433 is rotatably installed with the clamping rod body 431 through the adapter ring 432, and the clamping rod body 431 is clamped and installed with the telescopic end of the telescopic push rod 14. The first processing rod 41 can move translationally on the stamping die body 1 through the cooperation of the clamping rod body 431 and the telescopic push rod 14.

[0053] The processing assembly 44 includes a central rotating rod 441 installed in the middle of the inner side of the first processing rod 41, and the tail end of the central rotating rod 441 is connected to the double-axis motor 433 through the guidance of the first stirrup bent tube 434 and the second stirrup bent tube 435. The central rotating rod 441 is rotatably installed with the first processing rod 41 through the double-axis motor 433. The inner side of the central rotating rod 441 is equipped with an opening and closing rod 442 in a circular array, and the outer side of the central rotating rod 441 is equipped with a brush tube 443, a scraping brush tube 444 and an electric spark rod 445 in a centrally symmetrical shape. The brush tube 443, the scraping brush tube 444 and the electric spark rod 445 are arranged in a circular array on the outer surface of the central rotating rod 441, and all three are opened and closed. Rod 442 and central rotating rod 441 are installed telescopically, and all three can extend from long notch 45 under the control of opening and closing rod 442, and operate on the inner side of inner mold body 2, brush tube 443 is used to apply anti-stick coating to the inner wall of inner mold body 2 and form a protective film to prevent plastic from sticking to the mold, scraper tube 444 is used to scrape and clean dust and impurities on the inner wall of inner mold body 2, spark rod 445 is used to perform discharge corrosion treatment on the inner wall of inner mold body 2, wherein the end of spark rod 445 away from central rotating rod 441 is symmetrically installed with angled electrode 446 for discharge, and the corrosion phenomenon generated during spark discharge is used to form a layer of tiny concave and convex texture on the surface of the mold.

[0054] During the use of the processing assembly 4, the first hoop bend 434 and the second hoop bend 435 can strengthen the fit of the processing assembly 4 and the inner wall of the inner mold body 2 at the corners, thereby helping to enhance the fit of the contact surfaces between the processing component 44 and the inner wall of the inner mold body 2 at these two locations, so that when the processing component 44 processes the vertical wall and the corner wall of the inner side of the inner mold body 2, it can also take care of it without leaving any dead angles, thereby reducing the possibility of plastic sticking to the inside of the inner mold body 2 and improving the yield rate of plastic parts being smoothly demolded from the inside of the inner mold body 2.

[0055] When the inner mold body 2 is not smoothly demoulded after being used for a long time for stamping, the central rotating rod 441 can be rotated inside the first processing rod 41 by the dual-axis motor 433 to rotate the spark rod 445 to the position of the long notch 45, and then the angled electrode 446 on the spark rod 445 is exposed from the long notch 45 via the opening and closing rod 442, and the spark rod 445 is started to discharge via the angled electrode 446. The corrosion phenomenon generated during spark discharge is used to form a layer of tiny concave and convex texture on the inner surface of the inner mold body 2, thereby increasing the friction coefficient of the surface of the inner mold body 2 and preventing adhesion between the inner mold body 2 and the plastic. This can effectively improve the smoothness and flatness of the inner surface of the inner mold body 2 and improve the anti-sticking performance of the inner mold body 2.

[0056] The third embodiment is based on the first and second embodiments. Figures 12 to 15As shown, a sealing plug ring 65 is fixedly installed on the inner and outer side walls of the ring frame bag body 61, and a shrinkage folding portion 66 is also installed on the inner and outer side walls of the ring frame bag body 61, and the shrinkage folding portion 66 is symmetrically installed on the upper and lower sides of the built-in heat-conducting frame 62 on the inner side wall of the ring frame bag body 61, and is also symmetrically installed on the upper and lower sides of the external heat-conducting frame 63 on the outer side wall of the ring frame bag body 61. The thickness of the ring frame bag body 61 is the same as the inner cavity thickness of the inner cavity 17, and the width of the inner cavity 17 is greater than the width of the ring frame bag body 61. The built-in heat-conducting frame 62 can be installed on the inner wall surface of the inner cavity 17 through the ductility of the shrinkage folding portion 66, and the external heat-conducting frame 63 can be inserted into the outer ring condensation cavity 1 through the inner cavity 17 through the ductility of the shrinkage folding portion 66. 8; the heat transfer member 64 includes an external barb heat conductor 641 and an internal barb heat conductor 642 assembled on the inner side of the ring frame bag body 61, wherein the end of the external barb heat conductor 641 away from the internal barb heat conductor 642 is embedded in the external heat conductive frame 63 through a sealing plug ring 65, the end of the internal barb heat conductor 642 away from the external barb heat conductor 641 is embedded in the internal heat conductive frame 62 through a sealing plug ring 65, and the end of the external barb heat conductor 641 close to the internal barb heat conductor 642 is hooked and installed, and the end of the external barb heat conductor 641 close to the internal barb heat conductor 642 is embedded with a thermal contact piece 643, and the thermal contact piece 643 is movably installed between the external barb heat conductor 641 and the internal barb heat conductor 642.

[0057] When in use, a heat dissipation and cooling buffer zone can be formed between the inner mold body 2 and the outer ring condensation chamber 18 through the setting of the inner cavity 17 and the temperature control assembly 6. The inner cavity 17 and the temperature control assembly 6 serve as a buffer structure for the high-temperature heat inside the inner mold body 2 to radiate to the surrounding heat, and also act as a heat gathering area to retain the heat for a short time. On the one hand, it ensures that the surface of the plastic part can be evenly dissipated and cooled, and on the other hand, it prevents the surface heat of the plastic part from suddenly decreasing, causing defects caused by uneven local temperature loss on the plastic surface.

[0058] The inner cavity 17 and the temperature control assembly 6 are used as the heat conduction medium for the inner mold body 2 to conduct heat to the surroundings, and the direct contact between the cold air inside the outer ring condensation cavity 18 and the inner mold body 2 is isolated. The heat exchange site is isolated at the connection between the outer ring condensation cavity 18 and the inner cavity 17, and the external heat conduction frame 63 and the external barb heat conductor 641 are used as heat conduction components for heat exchange there, and heat conduction is carried out to avoid heat exchange between cold air and the side walls around the inner mold body 2, and avoid the influence of heat exchange on the material of the inner mold body 2 itself, to ensure that the inner mold body 2 is always in the same heat medium environment, and after the plastic part is cooled and formed, it cools down by itself, and does not directly participate in the process of cold air and heat exchange and transfer, thereby ensuring the service life of the inner mold body 2 and solving the problem of uneven heat dissipation on the molding surface of the plastic part.

[0059] By using the thermal contact piece 643 as the heat transfer medium in the heat conduction process between the external barb heat conductor 641 and the internal barb heat conductor 642, heat conduction can be effectively performed regardless of whether the external barb heat conductor 641 and the internal barb heat conductor 642 are in a hook contact form far away from each other between the proximal ends or in a state of overlapping hook contact form close to each other. It can effectively cooperate with the heat collision and cooling contraction characteristics of the ring frame bag body 61 to perform heat conduction at all times, without affecting the heat transfer component 64 from guiding the heat inside the inner mold body 2 to the inner side of the outer ring condensation chamber 18 inside the stamping mold body 1, thereby ensuring that the temperature control assembly 6 smoothly guides the heat inside the inner mold body 2.

[0060] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A plastic stamping die for preventing plastic from sticking to the die, characterized in that: It includes a stamping die body and a processing assembly; the stamping die body is provided with an inner die body; The processing assembly includes a first processing rod and a second processing rod movably arranged in the inner mold body; a transverse movement component is arranged at one end of the first processing rod away from the second processing rod; a processing component is arranged in the first processing rod; and a long notch is arranged at the bottom of the first processing rod; The traverse assembly is used for driving the first processing rod to move; The processing assembly includes a central rotating rod rotatably arranged in the first processing rod; a brush tube, a scraper brush tube and an electric spark rod are installed on the outer side of the central rotating rod in a centrally symmetrical shape; The traverse assembly includes a clamping rod body arranged at an end of the first processing rod away from the second processing rod, an adapter ring is arranged at an end of the clamping rod body close to the first processing rod, a dual-axis motor is arranged at an end of the dual-axis motor close to the adapter ring, a first stirrup bent pipe is arranged at an end of the first stirrup bent pipe away from the dual-axis motor, and an end of the second stirrup bent pipe away from the first stirrup bent pipe is connected to the first processing rod. The dual-axis motor is connected to the clamping rod body through an adapter ring, and the clamping rod body is connected to the telescopic push rod; The tail end of the central rotating rod is connected to the double-axis motor through the guidance of the first stirrup bent pipe and the second stirrup bent pipe, and the inner side of the central rotating rod is equipped with opening and closing rods in a circular array; The brush tube, scraper brush tube and spark rod are arranged in a circular array on the outer surface of the central rotating rod, and the opening and closing rods of the three are telescopically installed with the central rotating rod, and the end of the spark rod away from the central rotating rod is symmetrically installed with an angled electrode; A top buckle ring is provided on the top of the first processing rod and the second processing rod, a magnetic suction head is assembled between the first processing rod and the second processing rod, and an anti-slip pad is provided on the bottom of the magnetic suction head; The stamping die body comprises an outer body block 1 and an outer body block 2 which are symmetrically arranged; hydraulic cylinders are arranged on both sides of the stamping die body; the outer body block 1 is telescopically mounted with the outer body block 2 through the hydraulic cylinder; It also includes a temperature control assembly, which is arranged in an inner cavity opened inside the stamping die body, and includes a ring frame capsule body embedded in the inner cavity, an inner side wall of the ring frame capsule body is provided with an internal heat-conducting frame, an outer side wall of the ring frame capsule body is provided with an external heat-conducting frame, a heat transfer element is assembled between the internal heat-conducting frame and the external heat-conducting frame, and the heat transfer element is installed in the ring frame capsule body; A telescopic push rod is provided on the top of the outer body block 1, a sliding groove is provided on the side of the top of the outer body block 1 away from the telescopic push rod, and a card slot cooperating with the processing assembly is provided on the right side of the top of the outer body block 1; The outer body block 1 and the outer body block 2 are provided with an inner cavity, the outer body block 1 and the outer body block 2 are provided with an outer ring condensation cavity, the outer ring condensation cavity is located outside the inner cavity, the outer ring condensation cavity is connected with the inner cavity, and the outer body block 1 is provided with a cooling machine connected with the outer ring condensation cavity; Sealing plug rings are provided on the inner and outer side walls of the ring frame capsule body, and shrinkage folding parts are provided on the inner and outer side walls of the ring frame capsule body. The shrinkage folding parts are symmetrically arranged on the upper and lower sides of the built-in heat-conducting frame of the ring frame capsule body, and are also symmetrically arranged on the upper and lower sides of the external heat-conducting frame of the ring frame capsule body. The thickness of the ring frame capsule body is the same as the thickness of the inner cavity, and the width of the inner cavity is greater than the width of the ring frame capsule body. The built-in heat-conducting frame can be embedded and installed on the inner wall surface of the inner cavity through the ductility of the shrinkage folding part, and the external heat-conducting frame can be inserted into the outer ring condensation cavity through the inner cavity through the ductility of the shrinkage folding part; The heat transfer component includes an external barb heat conductor and an internal barb heat conductor which are arranged on the ring frame bag body. The end of the external barb heat conductor away from the internal barb heat conductor is installed in the external heat conductive frame through a sealing plug ring, and the end of the internal barb heat conductor away from the external barb heat conductor is installed in the internal heat conductive frame through a sealing plug ring. The external barb heat conductor and the internal barb heat conductor are hooked and installed. A thermal contact piece is provided at one end of the external barb heat conductor close to the internal barb heat conductor, and the thermal contact piece is movably arranged between the external barb heat conductor and the internal barb heat conductor.

2. A plastic stamping die for preventing plastic from sticking to the mold according to claim 1, characterized in that: It also includes a marking assembly; the marking assembly includes a shielding member arranged at the bottom of the inner mold body; a triggering member is arranged at the bottom of the shielding member; the triggering member is provided with a lifting column in the inner mold body; and a marking steel stamp is arranged on the top of the lifting column; The shielding member includes a covering plate arranged on the top of the identification stamp, the covering plate is embedded in the inner mold body, a retracting body is hinged at the end of the covering plate away from the identification stamp, a torsion motor is arranged at the bottom of the retracting body, a threaded sleeve and a threaded guide rod are arranged at the bottom of the torsion motor, the threaded sleeve is provided with a tensioning spring, and the tensioning spring is sleeved on the threaded guide rod; a ring pad is arranged at the bottom of the tensioning spring, and the ring pad is arranged in the inner mold body.

3. A plastic stamping die for preventing plastic from sticking to the mold according to claim 2, characterized in that: A U-shaped steering cavity is opened inside the inner mold body, and a steering guide strip is installed on the inner side of the U-shaped steering cavity. The left end of the steering guide strip is fixedly connected to the bottom of the threaded guide rod, and a telescopic valve column is fixedly installed at the bottom of the jacking column. The right end of the steering guide strip is fixedly installed at the bottom of the telescopic valve column to control the opening and closing of the telescopic valve column. The opening and closing of the telescopic valve column controls the rising and falling movements of the jacking column, thereby controlling the rising and falling movements of the identification stamp.

4. A plastic stamping die for preventing plastic from sticking to the die according to claim 3, characterized in that: An engagement opening is provided on the inner side of the inner mold body, and a chamfered partition is also fixedly installed on the inner side of the inner mold body, wherein the engagement opening corresponds to the right end of the cover plate in a horizontal state, and is used to clamp and limit the right end of the cover plate to ensure that the cover plate completely covers the top of the logo stamp to prevent plastic from entering the cavity where the logo stamp is located or contaminating the logo stamp. The chamfered partition is installed between the logo stamp and the retraction body to provide unobstructed turning guidance when the cover plate is retracted into the inner mold body.

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