A fast demolding and highly efficient plastic mold

Abstract

The present invention discloses a fast demoulding and highly efficient plastic mould, which mainly comprises a bottom plate, a top plate, a lower mould base, an upper seat, an upper mould and a demoulding device. A lower mould base is fixedly installed at the top end of the bottom plate, and a concave assembly groove is formed in the middle of the top end of the lower mould base. A combined template is inserted and installed at the position of the concave assembly groove of the lower mould base, and heat conducting plates symmetrically arranged front and back are fixedly installed at the bottom end of the combined template, and through holes arranged in a staggered manner are formed in the heat conducting plates. The present invention is reasonable in structural design. The self-guidance adopts frustum guidance, and the friction consumption in the early stage is small. The pneumatic cooperation with the mechanical flexible ejector pins for demoulding can better avoid damage caused by excessive force on the acting surface of the finished product in a short time, ensure the quality of the finished product, the ejector pins move flexibly and return in place to ensure normal processing.

Description

Technical Field

[0001] The present invention relates to a mold, in particular to a fast demolding and efficient plastic mold. Background Art

[0002] A mold is various molds and tools used in industrial production to obtain required products by methods such as injection molding, blow molding, extrusion, die casting, or forging and pressing forming, smelting, stamping, etc. In short, a mold is a tool for making formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the outer shape of the article by changing the physical state of the formed material.

[0003] In the production and processing of existing molds, cylindrical guiding is adopted for self-guiding. To ensure the accuracy of mold opening and closing, the gap between the guide pillar and the guide sleeve is generally small, resulting in large moving friction of the moving mold, energy loss, rapid wear, and serious heat generation. At the same time, the internal demolding structure generally adopts ejector pin demolding, with a small acting area, easy to damage the product, unreasonable ejector pin shape, large moving resistance, and easy to cause non-return after mold closing. The ejector pin penetrates into the mold cavity, affecting normal processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a fast demolding and efficient plastic mold to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A fast demoulding and highly efficient plastic mould mainly comprises a bottom plate, a top plate, a lower mould base, an upper seat, an upper mould and a demoulding device. A lower mould base is fixedly installed at the top end of the bottom plate, and a concave assembly groove is formed in the middle of the top end of the lower mould base. A combined template is inserted and installed at the position of the concave assembly groove of the lower mould base. Heat conducting plates symmetrically arranged front and back are fixedly installed at the bottom end of the combined template. Through holes arranged in a staggered manner are formed in the heat conducting plates. Partition plates arranged at equal intervals are fixedly installed between the through holes of the heat conducting plates. Channel plates arranged in a staggered manner are fixedly installed on the side walls of the heat conducting plates at the front and back ends. Side plates are fixedly installed on the left and right side walls of the lower mould base. Middle clamping plates are fixedly installed on the front and back side walls of the lower mould base. An upper mould is slidably installed between the side plates and the middle clamping plates. Symmetrically arranged sliding blocks are fixedly installed on the outer wall of the upper mould. Guide openings matched with the sliding blocks are formed in the side plates and the middle clamping plates. A mould cavity is arranged in the middle of the bottom end of the upper mould. A heat conducting seat is fixedly installed in the middle of the top end of the upper mould. An upper seat is fixedly installed at the top end of the upper mould. A water cavity is arranged in the middle of the inner side of the upper seat. A rotary sleeve is screwed and installed at the position of the water cavity at the bottom end of the upper seat. A heat conducting rod is fixedly installed through the middle of the rotary sleeve. The bottom end of the heat conducting rod is inserted and assembled with the heat conducting seat. A feeding head is fixedly installed through the middle of the upper seat. Demoulding devices symmetrically arranged are fixedly installed at the edge of the corner of the mould cavity of the upper seat. A top plate is fixedly installed at the top end of the upper seat. Guide rods are fixedly installed at the bottom end of the top plate. An upper water head matched with the water cavity is fixedly installed through the top plate. The upper water head is communicated with an external water circulation device through a pipeline. A plug-in sleeve is embedded and fixedly installed at the edge of the top end of the lower mould base. The guide rods are in a frustum shape with a thick top and a thin bottom, and the inner wall of the plug-in sleeve is matched with the outer shape of the guide rods.

[0007] As a further scheme of the present invention: the demoulding device mainly comprises an outer frame, a connecting rod, a spring seat, a spring, a push plate, a damping sleeve, a sliding pin, a plug, a damping rod, a sliding pin opening, a sealing ring and a middle rod. The connecting rod is slidably installed on the upper part of the outer frame. The front and back ends of the connecting rod extend to the outside of the upper seat. The end part of the connecting rod is tightly pressed against the side wall of the top end of the middle clamping plate. A middle rod is fixedly installed on the side wall of the connecting rod inside the outer frame. A push plate is fixedly installed at the bottom end of the middle rod. Symmetrically arranged springs are fixedly installed at the top end of the push plate. A spring seat is fixedly installed on the inner wall of the upper part of the outer frame. The inner wall of the bottom end of the spring seat is fixedly connected with the spring. A sealing ring is fixedly installed at the edge of the push plate. The outer wall of the sealing ring is in close sliding contact with the inner wall of the outer frame. A damping sleeve is fixedly installed at the bottom end of the push plate. A damping rod is slidably inserted inside the damping sleeve. A sliding pin is fixedly installed on the outer wall of the upper part of the damping rod. A sliding pin opening matched with the sliding pin is formed in the side wall of the damping sleeve. A frustum-shaped plug is fixedly installed at the bottom end of the damping rod. The plug is tightly inserted into the side wall of the bottom end of the outer frame. A moving opening matched with the connecting rod is formed in the inner side edge of the upper seat.

[0008] As a further solution of the present invention: an inner concave insertion slot for cooperating with the heat conducting plate, the partition plate and the channel plate is formed on the inner wall of the lower die base at the inner concave assembly groove, and the inner wall of the lower die base is in close contact with the heat conducting plate, the partition plate and the channel plate.

[0009] As a further solution of the present invention: symmetric water outlets are fixedly installed through the front side of the lower die base, and the water outlets are conducted with an external water circulation device through pipelines.

[0010] As a further solution of the present invention: a wedge-shaped notch for cooperating with the combined template is arranged on the side wall at the bottom end of the upper die, and the upper die is in close fit with the combined template.

[0011] As a further solution of the present invention: a limiting sleeve for cooperating with the guide rod is fixedly installed through the inner side of the upper die.

[0012] As a further solution of the present invention: the feeding head is fixedly conducted with an external feeding device through a pipeline, the feeding head adopts an electromagnetic opening and closing structure, and the feeding head is electrically connected with an external power supply and an external control device through a wire harness.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The present invention is reasonable in structural design. The guiding of itself adopts conical table guiding, and the friction consumption in the early stage is small. The pneumatic cooperation with the mechanical flexible ejector pin for demolding can better avoid the damage caused by excessive force on the acting surface of the finished product in a short time, ensure the quality of the finished product, the ejector pin moves flexibly and returns in place to ensure normal processing. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of a high-efficiency plastic mold for rapid demolding.

[0016] Figure 2 It is a structural schematic diagram inside the high-efficiency plastic mold for rapid demolding.

[0017] Figure 3 It is a bottom view schematic diagram among the ejector, the upper die, the guide rod, the guide sleeve and the feeding head in the high-efficiency plastic mold for rapid demolding.

[0018] Figure 4 It is a side view schematic diagram among the ejector, the upper seat, the upper die and the middle clamping plate in the high-efficiency plastic mold for rapid demolding.

[0019] Figure 5 It is a bottom view schematic diagram among the combined template, the heat conducting plate, the partition plate and the channel plate in the high-efficiency plastic mold for rapid demolding.

[0020] Figure 6 It is a sectional view schematic diagram among the outer frame, the damping rod, the damping sleeve, the push plate and the plug in the high-efficiency plastic mold for rapid demolding.

[0021] Figure 7 It is a schematic structural diagram among a heat conduction rod, a rotary joint sleeve, an upper seat and an upper mold in a high-efficiency plastic mold for rapid demolding.

[0022] Figure 8 It is a schematic structural diagram among an outer frame, a spring, a spring seat, a push plate and a sealing ring in a high-efficiency plastic mold for rapid demolding.

[0023] In the figure: bottom plate 1, lower water head 2, top plate 3, upper water head 4, middle clamping plate 5, feeding head 6, lower mold base 7, slider 8, upper seat 9, side plate 10, upper mold 11, heat conduction plate 12, partition plate 13, channel plate 14, guide rod 15, outer frame 16, heat conduction rod 17, rotary joint sleeve 18, water cavity 20, limit sleeve 21, mold clamping plate 22, mold cavity 23, heat conduction seat 24, insertion sleeve 25, connecting rod 26, spring seat 27, spring 28, push plate 29, damping sleeve 30, sliding pin 31, plug 32, damping rod 33, sliding pin hole 34, sealing ring 35, middle rod 36. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Please refer to Figures 1 to 8, in the embodiments of the present invention, a fast demolding and efficient plastic mold mainly includes a bottom plate 1, a top plate 3, a lower die base 7, an upper seat 9, an upper die 11 and a demolding device. The bottom plate 1 is fixedly installed with the lower die base 7 at the top end. A concave assembly groove is opened in the middle of the top end of the lower die base 7. A combined template 22 is inserted and installed at the position of the concave assembly groove of the lower die base 7. Heat conduction plates 12 are fixedly installed symmetrically front and back at the bottom end of the combined template 22. Through holes are arranged in a staggered manner inside the heat conduction plates 12. Partition plates 13 arranged at equal intervals are fixedly installed between the through holes of the heat conduction plates 12. Channel plates 14 arranged in a staggered manner are fixedly installed on the side walls of the heat conduction plates 12 at both front and back ends. Side plates 10 are fixedly installed on the left and right side walls of the lower die base 7. Middle clamping plates 5 are fixedly installed on the front and back side walls of the lower die base 7. An upper die 11 is slidably installed between the side plates 10 and the middle clamping plates 5. Sliders 8 are symmetrically fixedly installed on the outer wall of the upper die 11. Guide openings matched with the sliders 8 are opened inside the side plates 10 and the middle clamping plates 5. A mold cavity 23 is arranged in the middle of the bottom end of the upper die 11. A heat conduction seat 24 is fixedly installed in the middle of the top end of the upper die 11. An upper seat 9 is fixedly installed at the top end of the upper die 11. A water cavity 20 is arranged in the middle of the inner side of the upper seat 9. A rotary sleeve 18 is screwed and installed at the position of the water cavity 20 at the bottom end of the upper seat 9. A heat conduction rod 17 is fixedly installed through the middle of the rotary sleeve 18. The bottom end of the heat conduction rod 17 is inserted and assembled with the heat conduction seat 24. A feeding head 6 is fixedly installed through the middle of the upper seat 9. Demolding devices are symmetrically fixedly installed at the corner edges of the mold cavity 23 on the upper seat 9. A top plate 3 is fixedly installed at the top end of the upper seat 9. A guide rod 15 is fixedly installed at the bottom end of the top plate 3. An upper water head 4 matched with the water cavity 20 is fixedly installed through the middle of the top plate 3. The upper water head 4 is conducted with an external water circulation device through a pipeline. A plug-in sleeve 25 is embedded and fixedly installed at the edge of the top end of the lower die base 7. The guide rod 15 is in a frustum shape with a thick top and a thin bottom. The inner wall of the plug-in sleeve 25 matches the outer shape of the guide rod 15.

[0028] The demolding device mainly includes an outer frame 16, a connecting rod 26, a spring seat 27, a spring 28, a push plate 29, a damping sleeve 30, a sliding pin 31, a plug 32, a damping rod 33, a sliding pin opening 34, a sealing ring 35 and a middle rod 36. The upper part of the outer frame 16 is slidably installed with the connecting rod 26. The front and rear ends of the connecting rod 26 extend to the outside of the upper seat 9. The end of the connecting rod 26 is tightly pressed against the top side wall of the middle clamping plate 5. The side wall of the connecting rod 26 located inside the outer frame 16 is fixedly installed with the middle rod 36. The bottom end of the middle rod 36 is fixedly installed with the push plate 29. The top end of the push plate 29 is fixedly installed with symmetrically arranged springs 28. The inner wall of the upper part of the outer frame 16 is fixedly installed with the spring seat 27. The inner wall of the bottom end of the spring seat 27 is fixedly connected with the spring 28. The edge of the push plate 29 is fixedly installed with the sealing ring 35. The outer wall of the sealing ring 35 is in close sliding contact with the inner wall of the outer frame 16. The bottom end of the push plate 29 is fixedly installed with the damping sleeve 30. The damping rod 33 is slidably inserted into the inner side of the damping sleeve 30. The upper outer wall of the damping rod 33 is fixedly installed with the sliding pin 31. The side wall of the damping sleeve 30 is provided with a sliding pin opening 34 that cooperates with the sliding pin 31. The bottom end of the damping rod 33 is fixedly installed with a conical plug 32. The plug 32 is tightly inserted into the side wall of the bottom end of the outer frame 16. A moving opening that cooperates with the connecting rod 26 is provided at the inner edge of the upper seat 9.

[0029] The inner wall of the lower mold base 7 at the concave assembly groove is provided with concave insertion slots that cooperate with the heat conducting plate 12, the partition plate 13 and the channel plate 14. The inner wall of the lower mold base 7 is in close contact with the heat conducting plate 12, the partition plate 13 and the channel plate 14.

[0030] On the front side of the lower mold base 7, symmetrically arranged water outlets 2 are fixedly installed through. The water outlets 2 are conducted with an external water circulation device through pipelines.

[0031] The bottom side wall of the upper mold 11 is provided with a wedge-shaped groove opening that cooperates with the template combining plate 22. The upper mold 11 is in close fit with the template combining plate 22.

[0032] The inner side of the upper mold 11 is fixedly installed with a limit sleeve 21 that cooperates with the guide rod 15 through.

[0033] The feeding head 6 is fixedly conducted with an external feeding device through a pipeline. The feeding head 6 adopts an electromagnetic opening and closing structure. The feeding head 6 is electrically connected to an external power supply and an external control device through a wire harness.

[0034] The working principle of the present invention is:

[0035] The present invention relates to a fast demolding and highly efficient plastic mold. During the production and processing of this mold, the self-guidance thereof adopts frustum guidance and is combined with surrounding limits. On the basis of not affecting normal blanking, a guidance method with smaller frictional resistance is adopted. Compared with cylindrical guidance, during the movement process of mold closing, the frictional resistance is in an increasing state, so the frictional consumption in the early stage is smaller. Moreover, with frustum guidance, the force on the frustum surface is inclined and directed towards the center of the axis, the guidance is more accurate, and the frictional heat generation is less;

[0036] At the same time, the internal demolding structure adopts pneumatic cooperation with mechanical flexible ejector pins for demolding. In the initial stage of mold closing, the push plate presses the air inside the outer frame 16 out and enters the gap between the inner wall of the upper mold and the outer wall of the finished product, and separates the relatively loose connection part between the two by means of pneumatic force. And at this time, the damping sleeve and the damping rod move synchronously while rubbing against each other, and push the plug downward. When the resistance is too large, the damping rod and the damping sleeve move relative to each other, so that during the air-blowing process, the acting force always acts on the finished product, but is not too large in the short term, and the finished product can be gradually pushed open. At the end of the stroke of the damping rod and the damping sleeve, most of the connection part between the finished product and the upper mold has been pushed open. Then, the damping sleeve is used to push the plug downward for the final hard push. At this time, the connection part between the finished product and the upper mold is small, and it can be easily pushed down. The air-blowing separation is combined with step-by-step demolding, which can better avoid damage caused by excessive force on the acting surface of the finished product in a short time and ensure the quality of the finished product. The ejector pin is frustum-shaped, with small friction when moving relative to the outer frame and flexible movement, avoiding obstacles to the air-blowing and flexible pushing stages. After mold closing, through the extrusion and lifting of the connecting rod and the middle clamping plate, the plug is pulled back into the inner part of the outer frame and tightly clamped on the side wall to avoid failure to return to the proper position and ensure normal processing.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fast demoulding and highly efficient plastic mould mainly comprises a bottom plate (1), a top plate (3), a lower mould base (7), an upper seat (9), an upper mould (11) and a demoulding device, characterized in that, The top end of the bottom plate (1) is fixedly installed with a lower die base (7). In the middle of the top end of the lower die base (7), a concave assembly groove is formed. At the concave assembly groove of the lower die base (7), a combined template (22) is inserted and installed. At the bottom end of the combined template (22), heat conducting plates (12) symmetrically arranged front and back are fixedly installed. Through holes arranged in a staggered manner are formed inside the heat conducting plates (12). Between the through holes of the heat conducting plates (12), partition plates (13) arranged at equal intervals are fixedly installed. On the side walls of the front and rear heat conducting plates (12), channel plates (14) arranged in a staggered manner are fixedly installed. On the left and right side walls of the lower die base (7), side plates (10) are fixedly installed. On the front and rear side walls of the lower die base (7), middle clamping plates (5) are fixedly installed. An upper die (11) is slidably installed between the side plates (10) and the middle clamping plates (5). On the outer wall of the upper die (11), symmetrically arranged sliders (8) are fixedly installed. Guide openings matched with the sliders (8) are formed inside the side plates (10) and the middle clamping plates (5). In the middle of the bottom end of the upper die (11), a die cavity (23) is arranged. In the middle of the top end of the upper die (11), a heat conducting seat (24) is fixedly installed. On the top end of the upper die (11), an upper seat (9) is fixedly installed. In the middle of the inner side of the upper seat (9), a water cavity (20) is arranged. At the water cavity (20) of the bottom end of the upper seat (9), a screwing sleeve (18) is rotatably installed. A heat conducting rod (17) is fixedly installed through the middle of the screwing sleeve (18). The bottom end of the heat conducting rod (17) is inserted and assembled with the heat conducting seat (24). A feeding head (6) is fixedly installed through the middle of the upper seat (9). At the corner edges of the die cavity (23) of the upper seat (9), symmetrically arranged demoulding devices are fixedly installed. On the top end of the upper seat (9), a top plate (3) is fixedly installed. On the bottom end of the top plate (3), a guide rod (15) is fixedly installed. An upper water head (4) matched with the water cavity (20) is fixedly installed through the middle of the top plate (3). The upper water head (4) is conducted with an external water circulation device through a pipeline. At the edge of the top end of the lower die base (7), a socket sleeve (25) is embedded and fixedly installed. The guide rod (15) is in a frustum shape with a thicker upper part and a thinner lower part. The inner wall of the socket sleeve (25) is matched with the outer shape of the guide rod (15);The demolding device mainly includes an outer frame (16), a connecting rod (26), a spring seat (27), a spring (28), a push plate (29), a damping sleeve (30), a sliding pin (31), a plug (32), a damping rod (33), a sliding pin hole (34), a sealing ring (35) and a middle rod (36). The upper part of the outer frame (16) is slidably installed with the connecting rod (26). The front and rear ends of the connecting rod (26) extend to the outside of the upper seat (9). The end of the connecting rod (26) is tightly pressed against the top side wall of the middle clamping plate (5). The side wall of the connecting rod (26) located inside the outer frame (16) is fixedly installed with the middle rod (36). The bottom end of the middle rod (36) is fixedly installed with the push plate (29). Symmetrically arranged springs (28) are fixedly installed at the top end of the push plate (29). The inner wall of the upper part of the outer frame (16) is fixedly installed with the spring seat (27). The inner wall of the bottom end of the spring seat (27) is fixedly connected with the spring (28). The sealing ring (35) is fixedly installed at the edge of the push plate (29). The outer wall of the sealing ring (35) is in close sliding contact with the inner wall of the outer frame (16). The damping sleeve (30) is fixedly installed at the bottom end of the push plate (29). The damping rod (33) is slidably inserted into the inner side of the damping sleeve (30). The sliding pin (31) is fixedly installed on the outer wall of the upper part of the damping rod (33). The sliding pin hole (34) matching with the sliding pin (31) is arranged on the side wall of the damping sleeve (30). The conical plug (32) is fixedly installed at the bottom end of the damping rod (33). The plug (32) is tightly inserted into the side wall of the bottom end of the outer frame (16). A moving hole matching with the connecting rod (26) is arranged at the inner edge of the upper seat (9). An inner concave slot matching with the heat conducting plate (12), the partition plate (13) and the channel plate (14) is arranged on the inner wall of the lower mold base (7) at the inner concave assembly groove. The inner wall of the lower mold base (7) is in close contact with the heat conducting plate (12), the partition plate (13) and the channel plate (14). The left and right symmetric water outlets (2) are fixedly installed through the front side of the lower mold base (7). The water outlets (2) are conducted with the external water circulation equipment through pipelines. A wedge-shaped slot matching with the combined template (22) is arranged on the bottom side wall of the upper mold (11). The upper mold (11) is closely attached to the combined template (22). The limit sleeve (21) matching with the guide rod (15) is fixedly installed through the inside of the upper mold (11). The feeding head (6) is fixedly conducted with the external feeding equipment through a pipeline. The feeding head (6) adopts an electromagnetic opening and closing structure. The feeding head (6) is electrically connected with the external power supply and the external control equipment through a wire harness.

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