Injection mold convenient to demold

Abstract

The invention provides an injection mold convenient to demold, and relates to the technical field of injection molds, the injection mold convenient to demold comprises a base, a supporting frame, a lower mold, a pushing mechanism and an upper mold, and a turnover mechanism capable of driving the lower mold to turn over when the upper mold vertically moves is arranged on the inner wall of the supporting frame; a feeding assembly capable of enabling a hot melting material to fill the lower mold from bottom to top so as to prevent the hot melting material from sputtering is arranged between the upper mold and the lower mold, and a demolding mechanism used for ejecting a formed product is further arranged at the bottom of the lower mold. According to the injection mold, when a hot melting material is poured, the problem that holes are formed in a formed product due to the fact that the hot melting material is sputtered to generate bubbles can be prevented, an opening of the lower mold can face downwards during demolding, the contact area of an ejection part and the bottom of the product can be increased, the product can be cooled while being ejected, and the product quality is improved. Therefore, the demolding speed can be increased, and the product quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold which is easy to demould. Background Art

[0002] An injection mold is a tool for producing plastic products. It is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidification, a molded product is obtained, and then the molded product is removed from the mold through a demoulding device.

[0003] After searching, the application number CN202322099086.5 discloses a sealing plug injection mold that is easy to demold, including a workbench and a base. A liquid reservoir is arranged inside the workbench, and the outer periphery of the liquid reservoir is arranged in a square shape, and a circular opening is opened inside the liquid reservoir; a first water pump and a second water pump are installed at the upper end of the base; a plate-fin heat exchanger is installed on one side of the upper end of the base; a support frame is arranged at the upper end of the workbench and is arranged in an L shape; a first hydraulic rod is installed on the lower side of the front end of the support frame. The utility model overcomes the shortcomings of the prior art, and by arranging a liquid reservoir, a plate-fin heat exchanger, a first water pump and a second water pump for use in conjunction, the mold is evenly and comprehensively cooled, the cooling efficiency is improved, and thus the delay in the construction period is avoided; by arranging a power switch and a heating pipe, the inside of the mold cavity is heated to avoid the plastic melt from solidifying on the surface after entering the mold cavity, resulting in the generation of weld marks.

[0004] Application number CN202322791445.3 discloses an injection mold that is easy to demould, and the utility model relates to the technical field of injection molds. The injection mold that is easy to demould comprises a bottom mold and a top mold arranged above the bottom mold, the top surface of the bottom mold is provided with a molding cavity, and further comprises: a receiving groove, the receiving groove is provided on the bottom surface of the bottom mold, and the receiving groove is located directly below the molding cavity; a cooling component, the cooling component is arranged on the top surface of the inner cavity of the receiving groove, the cooling component is used to cool the bottom of the molding cavity, the utility model can cool the bottom surface of the molding cavity through the cooling component, thereby reducing the adhesion of the plastic product in the molding cavity to the inner wall of the molding cavity, and then at this time, through the operation of the ejection component, it can be ejected from the inner cavity of the guide hole, and then the plastic product in the molding cavity can be ejected out of the molding cavity, so as to achieve the purpose of quickly demoulding the plastic product.

[0005] Although the above patents can achieve the effect of rapid demolding, the product in the mold is lifted up by the ejector pin, which will not only cause scratches on the bottom of the product due to the small contact area between the ejector pin and the molded product, but also because the newly molded plastic product is hot and relatively soft, when it comes into contact with the ejector pin, it is easy for a mucous membrane to form on the bottom of the product and adhere to the ejector pin, causing damage to the product. In addition, in the prior art, hot-melt material is generally poured into the mold from top to bottom, so the hot-melt material will splash and produce bubbles when it comes into contact with the bottom wall of the mold, which will cause holes in the product when the product is molded, thereby affecting the product quality. Summary of the invention

[0006] The purpose of the present invention is to address the problems that the existing injection mold cannot avoid damage to the bottom of the product when the molded product is ejected from the mold and bubbles are generated due to sputtering when pouring hot melt material, affecting the product quality.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] A mold for easy demoulding, comprising a base, a support frame arranged on the top of the base, a lower mold movably arranged between the inner walls on both sides of the support frame, a propulsion mechanism arranged on the top of the support frame and an upper mold arranged at the output end of the propulsion mechanism, a flipping mechanism is arranged on the inner wall of the support frame, which can drive the lower mold to flip when the upper mold moves vertically, the flipping mechanism includes a rotating column fixedly arranged on the side walls at both ends of the lower mold and rotatably connected to the inner walls on both sides of the support frame, and a rotating component arranged between the rotating column and the upper mold, a feeding component is arranged between the upper mold and the lower mold, which can fill the lower mold with hot-melt material from bottom to top to avoid splashing of the hot-melt material, and a demoulding mechanism for ejecting the molded product is also arranged at the bottom of the lower mold.

[0009] As a preferred technical solution of the present application, the rotating component includes a connecting plate arranged on the side walls at both ends of the upper mold, a transmission plate arranged at the bottom of the connecting plate, an incomplete gear sleeved on the outside of the rotating column, and a strong torsion spring arranged on the wall of the rotating column rod.

[0010] As a preferred technical solution of the present application, a limit assembly is also provided on the outside of the support frame for positioning the rotating column after flipping, and the limit assembly includes a box body arranged on both sides of the support frame, a first rotating shaft rotatably arranged on the inner wall of the box body and passing through the support frame and connected to the rotating column, a ratchet arranged outside the first rotating shaft, and a pawl rotatably arranged on the inner wall of the box body.

[0011] As a preferred technical solution of the present application, the limiting assembly also includes a bolt threadedly disposed on the outer wall of the support frame and a pull rope disposed at the bottom of the bolt and passing through the box body and connected to the upper surface of the pawl.

[0012] As a preferred technical solution of the present application, the feeding assembly includes a flow cavity opened inside the upper mold, a feeding barrel arranged on both sides of the bottom of the upper mold and connected to the flow cavity, a feeding cavity arranged inside the lower mold, and a slot arranged on the top of the lower mold and connected to the feeding cavity.

[0013] As a preferred technical solution of the present application, the demolding mechanism includes an air inlet assembly arranged at the bottom of the lower mold, a plurality of fixed cylinders arranged inside the lower mold, a movable column arranged inside the fixed cylinder, a sealing plate arranged on the top of the movable column, and a spring arranged between the movable column and the inner bottom wall of the fixed cylinder.

[0014] As a preferred technical solution of the present application, a knocking mechanism is provided at the bottom of the lower mold, and the knocking mechanism includes a driving assembly arranged at the bottom of the lower mold, a rotating rod arranged on the driving assembly, and a plurality of knocking rods movably arranged outside the rotating rod.

[0015] As a preferred technical solution of the present application, guide assemblies are also provided on both sides of the support frame, and the guide assemblies include guide bosses arranged on both sides of the support frame, U-shaped plates arranged on both sides of the connecting plate, and guide wheels rotatably arranged inside the U-shaped plates and in contact with the guide bosses.

[0016] As a preferred technical solution of the present application, a storage groove is provided on the top of the base, and protective components are also provided on both sides of the base. The protective components include baffles slidably arranged on both sides of the top of the base, a retractable component arranged on the side walls of the base and connected to the baffles, an elastic reset part arranged between the baffles and the base, and a transmission component arranged on the top of the base and capable of driving the retractable component to rotate when the upper mold moves vertically.

[0017] As a preferred technical solution of the present application, the transmission assembly includes a pressure plate arranged on the side wall of the connecting plate, a second tooth plate slidably arranged on the top of the base, a push rod movably arranged between the pressure plate and the second tooth plate, a second rotating shaft rotatably arranged on the retractable assembly, and a second gear arranged on the rod wall of the second rotating shaft.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting up the feeding assembly, after the upper mold and the lower mold are against each other and the hot-melt material is injected into the upper mold, the hot-melt material can flow downward along the inner wall of the lower mold to prevent the hot-melt material from splashing and generating bubbles when being poured, thereby preventing the problem of holes in the product after molding, which is conducive to improving product quality.

[0020] 2. After the product is formed, while the upper mold is driven upward to separate from the lower mold by the pushing mechanism, the lower mold can be driven upward to flip through the set flip mechanism so that the opening of the lower mold faces. At the same time, through the set demoulding mechanism, when the product is ejected from the lower mold, not only the contact area between the ejector and the product can be increased to prevent scratches on the bottom of the product, but also the product can be cooled while being ejected, so that the molded product can quickly slide out of the lower mold under the action of gravity, thereby improving the quality of the product after demoulding.

[0021] 3. Through the knocking mechanism, when the lower mold is demoulded after being turned down, the back of the lower mold can be struck to vibrate the lower mold, which facilitates the separation of the product inside the lower mold from the inner wall of the lower mold, further improving the demoulding speed of the product.

[0022] 4. Through the protection components set up, when the upper mold moves upward and separates from the lower mold, the propulsion components set up can drive the protection plates on both sides of the base to move upward, and cooperate with the support frame to form a fence, so as to block and protect the product that falls after demolding, prevent the product from falling out of the base when falling, and thus improve the quality of the product after demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is one of the overall structural diagrams of the present invention;

[0024] Figure 2 This is the second overall structural diagram of the present invention;

[0025] Figure 3 It is an overall front view of the present invention;

[0026] Figure 4 It is a bottom view structural diagram of the present invention;

[0027] Figure 5 It is a partial cross-sectional structural diagram of the present invention;

[0028] Figure 6 It is a structural diagram of the upper mold and the lower mold separation of the present invention;

[0029] Figure 7 This is a bottom view of the structure of the upper mold of the present invention;

[0030] Figure 8 It is a structural diagram of the protection component of the present invention;

[0031] Fig. 9 This is a structural diagram of the fixed cylinder and the movable column of the present invention;

[0032] Fig.10 It is a cross-sectional structural diagram of the upper mold and the lower mold of the present invention;

[0033] Fig.11 For the present invention Figure 4 The structure diagram at A is enlarged;

[0034] Fig.12 For the present invention Figure 5 The structure diagram at B is enlarged;

[0035] Fig.13 For the present invention Figure 5 The enlarged structure diagram at C in the middle;

[0036] Fig.14 For the present invention Fig.10 Enlarged structural diagram at point D in the middle.

[0037] Indicated in the figure:

[0038] 1. Base; 2. Support frame; 3. Lower mold; 4. Cylinder; 5. Upper mold; 501. Connecting plate; 6. Turning mechanism; 601. Rotating column; 602. Transmission plate; 603. Incomplete gear; 604. Strong torsion spring; 7. Knocking mechanism; 701. Motor; 702. Screw rod; 703. Moving seat; 704. Rotating rod; 705. Knocking rod; 706. First gear; 707. First tooth plate; 8. Limiting assembly; 801. Box body; 802. Ratchet; 803. First rotating shaft; 804. Ratchet; 806. Bolt; 807. Pull rope; 9. Guide assembly; 901. U-shaped plate; 902. Guide boss; 903, guide wheel; 10, demoulding mechanism; 1001, bellows; 1002, fan; 1003, fixed cylinder; 1004, movable column; 1005, sealing plate; 1006, spring; 1007, limit ring; 11, feeding assembly; 1101, feeding cylinder; 1102, flow chamber; 1103, slot; 1104, feeding chamber; 12, protection assembly; 1201, baffle; 1202, reel; 1203, lifting rope; 13, transmission assembly; 1301, pressure plate; 1302, push rod; 1303, second tooth plate; 1304, second rotating shaft; 1305, second gear. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0040] like Figures 1 to 5As shown, this embodiment proposes an injection mold that is easy to demould, including a base 1, a support frame 2 arranged on the top of the base 1, a lower mold 3 movably arranged between the inner walls on both sides of the support frame 2, a propulsion mechanism arranged on the top of the support frame 2, and an upper mold 5 arranged at the output end of the propulsion mechanism, a flipping mechanism 6 that can drive the lower mold 3 to flip when the upper mold 5 moves vertically is arranged on the inner wall of the support frame 2, a feeding component 11 that can fill the lower mold 3 with hot melt material from bottom to top to avoid splashing of the hot melt material is arranged between the upper mold 5 and the lower mold 3, and a demoulding mechanism 10 for ejecting the molded product is also arranged at the bottom of the lower mold 3;

[0041] When performing mold injection molding, the upper mold 5 is first driven to move vertically downward and abut against the lower mold 3 through the provided propulsion mechanism, wherein the propulsion mechanism can be a cylinder 4, which is arranged on the top of the support frame 2, and the upper mold 5 is installed on the piston rod at the output end of the cylinder 4, so that the cylinder 4 can drive the upper mold 5 to move vertically, and when the upper mold 5 abuts against the lower mold 3, the provided feeding assembly 11 can press the hot-melt material into the lower mold 3, and can make the hot-melt material flow downward along the inner wall of the lower mold 3, so as to prevent the hot-melt material from directly falling into the lower mold 3, causing splashing and bubbles, thereby avoiding molding products. The problem of holes appearing inside the product can be solved, thereby improving the quality of the molded product. After the hot-melt material is formed, the cylinder 4 drives the upper mold 5 to move upward and separate from the lower mold 3. While the upper mold 5 moves upward, the turning mechanism 6 can drive the lower mold 3 to turn its opening downward. Therefore, the product will slide down under the action of gravity, which is convenient for product demoulding. At the same time, the demoulding mechanism 10 can not only increase the contact area of ​​the ejected product and prevent scratches on the bottom of the product while ejecting the product, but also cool the product, further increasing the demoulding speed and improving product quality.

[0042] Specifically, Figure 6 , Figure 7 , Fig.10 ,and Fig.14As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the feed assembly 11 includes a flow cavity 1102 opened in the upper mold 5, a feed barrel 1101 arranged on both sides of the bottom of the upper mold 5 and connected to the flow cavity 1102, a feed cavity 1104 arranged in the lower mold 3, a slot 1103 arranged at the top of the lower mold 3 and connected to the feed cavity 1104, and a discharge trough opened on the inner wall of the lower mold 3 and connected to the feed cavity 1104. In addition, a press platform is also provided at the bottom of the upper mold 5, and a sealing plug corresponding to the discharge trough is also provided at the edge of the press platform; when the upper mold 5 is about to abut against the lower mold 3, the feed barrel 1101 at the bottom of the upper mold 5 will be inserted into the slot 1103, which can not only guide the upper mold 5 so that the upper mold 5 can accurately abut against the lower mold 3, but also through the feed head arranged at the top of the upper mold 5, the hot melt material can be put into the flow cavity 1102 inside the upper mold 5. , the hot-melt material then flows into the feed cavity 1104 through the slots on the outer wall of the feed barrel 1101, and then flows downward along the inner wall of the lower mold 3 through the discharge trough. Therefore, when the hot-melt material flows into the lower mold 3, it can prevent the hot-melt material from splashing and producing bubbles, thereby avoiding the problem of holes appearing inside the product after molding. When the hot-melt material fills the lower mold 3, it continues to drive the upper mold 5 to move downward a short distance and completely abut against the lower mold 3. At this time, the pressing platform at the bottom of the upper mold 5 can extrude the hot-melt material, and the sealing plug on the side wall of the pressing platform will be pressed into the discharge trough to block and seal the discharge trough to prevent the hot-melt material from flowing back into the feed cavity 1104. In addition, a filter net can be set in the feed cavity 1104, which can not only filter impurities in the hot-melt material, but also slow down the flow speed of the hot-melt material, further preventing the hot-melt material from directly falling into the lower mold 3 and splashing and producing bubbles, thereby improving the quality of product molding.

[0043] like Figure 6 , Fig.10 and Fig.12 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the flip mechanism 6 includes a rotating column 601 fixedly arranged on the side walls at both ends of the lower mold 3 and rotatably connected to the inner walls on both sides of the support frame 2, a connecting plate 501 arranged on the side walls at both ends of the upper mold 5, a transmission plate 602 arranged at the bottom of the connecting plate 501, an incomplete gear 603 sleeved on the outside of the rotating column 601, and a strong torsion spring 604 arranged on the rod wall of the rotating column 601, and a tooth groove meshing with the incomplete gear 603 is provided in the middle of the transmission plate 602;

[0044] The support frame 2 is also provided with a limit assembly 8 for positioning the rotating column 601 after the flipping, and the limit assembly 8 includes a box body 801 arranged on both sides of the support frame 2, a first rotating shaft 803 rotatably arranged on the inner wall of the box body 801 and passing through the support frame 2 and connected to the rotating column 601, a ratchet 802 arranged outside the first rotating shaft 803, and a ratchet pawl 804 rotatably arranged on the inner wall of the box body 801 through a torsion spring shaft;

[0045] The limiting assembly 8 further includes a bolt 806 threadedly disposed on the outer wall of the support frame 2 and a pull rope 807 disposed at the bottom of the bolt 806 and passing through the box body 801 and connected to the upper surface of the ratchet 804;

[0046] When the cylinder 4 drives the upper mold 5 to move downward, the transmission plate 602 will first drive the rotating column 601 with the incomplete gear 603 to rotate through the tooth grooves on its side wall, so that the lower mold 3 is turned up with the opening facing upward, and then the tooth grooves of the transmission plate 602 will be separated from the incomplete gear 603. At this time, the strong torsion spring 604 will have a force to drive the rotating column 601 to reverse and reset, but the pawl 804 will jam the ratchet 802, so that the rotating column 601 connected to the first rotating shaft 803 cannot be reversed, so that the turned rotating column 601 and the lower mold 3 can be positioned, and the cylinder 4 continues to drive the upper mold 5 to move downward so that it can be offset against the turned-up lower mold 3. After the product is formed, when the upper mold 5 is driven by the cylinder 4 to move upward and separate from the lower mold 3, the bolt 804 is first turned. 06 rotates upward, and pulls the pawl 804 by the pull rope 807 to flip it upward and disengage the ratchet 802. At this time, the ratchet 802, the first rotating shaft 803 and the rotating column 601 can rotate normally. Therefore, after the transmission plate 602 moves up a certain distance, it will drive the rotating column 601 with the incomplete gear 603 to reverse and reset through the tooth groove on its side wall, and then drive the lower mold 3 to flip downward with the mouth facing downward, so that it is more convenient for the lower mold 3 to be demolded under the action of gravity. It should be noted that in order to prevent the parts of the flipping mechanism 6 from being touched by foreign objects, a protective cover can be set on the inner side of the support frame 2, and the parts in the flipping mechanism 6 can be shielded and protected by the protective cover to prevent foreign objects from touching some parts and affecting the normal operation of the flipping mechanism 6.

[0047] like Figure 4 , Figure 6 , Fig. 9 and Fig.10As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the demoulding mechanism 10 includes an air inlet assembly arranged at the bottom of the lower mold 3, a mounting cavity opened at the bottom of the lower mold 3 and connected to the air inlet assembly, a plurality of fixed cylinders 1003 arranged on the bottom wall of the mounting cavity, a moving column 1004 arranged inside the fixed cylinder 1003, a sealing plate 1005 arranged on the top of the moving column 1004 and a spring 1006 arranged between the moving column 1004 and the inner bottom wall of the fixed cylinder 1003, wherein the inner wall of the fixed cylinder 1003 is provided with a spiral groove, the outer side of the moving column 1004 is provided with a convex block matching with the spiral groove, and the bottom of the lower mold 3 The upper mold 5 is provided with a plurality of air outlets connected with the installation cavity, the sealing plate 1005 has the same diameter as the air outlet, and the top wall of the installation cavity is provided with a plurality of limit rings 1007 matched with the sealing plate 1005. In addition, the air inlet assembly includes a bellows 1001 arranged at the bottom of the lower mold and a fan 1002 arranged at the bottom of the bellows 1001, and the bottom wall of the installation cavity at the bottom of the lower mold 3 is provided with a plurality of air inlets connected with the bellows 1001; after the upper mold 5 moves upward and the lower mold 3 turns down, if the product does not slide out of the lower mold 3 under the action of gravity, the fan 1002 can also be started to work, and the fan 1002 passes high-pressure air into the In the bellows 1001, wind enters the installation cavity again. At this time, the sealing plate 1005 is blown by the high-pressure wind force and slides upward through the moving column 1004. While moving on the moving column 1004, the moving column 1004 can drive the sealing plate 1005 on its top to screw upward through the cooperation of the set protrusion and the spiral groove. Therefore, the sealing plate 1005 that can be screwed in can not only push the product to slide down and separate from the lower mold 3, but also can increase the contact area with the bottom of the product through a plurality of sealing plates 1005 to prevent scratches on the bottom of the product. In addition, the screwed-in sealing plate 1005 can also prevent the bottom of the product from contacting the sealing plate 1005 The problem of adhesion will be solved, and after the sealing plate 1005 is screwed upward, the air outlet will be opened, and the high-pressure wind can be blown into the lower mold 3 through the air outlet, which can not only cool the product, but also push the product down by wind force, thereby further improving the demoulding speed of the product while avoiding product damage and improving product quality. When the product is successfully demoulded, the fan 1002 is turned off. At this time, the sealing plate 1005 loses the propulsion of the wind and will move downward and reset under the action of the elastic reset part, and through the obstruction of the limit ring 1007, the sealing plate 1005 can only move down to the inside of the air outlet to seal the air outlet.

[0048] like Figure 4 and Fig.11As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a knocking mechanism 7 is provided at the bottom of the lower mold 3, and the knocking mechanism 7 includes a motor 701 arranged at the bottom of the lower mold 3, a screw rod 702 arranged at the output end of the motor 701, a movable seat 703 threadedly arranged on the rod wall of the screw rod 702 and slidably connected to the bottom of the lower mold 3, a rotating rod 704 rotatably arranged on the side wall of the movable seat 703, a plurality of knocking rods 705 movably arranged outside the rotating rod 704, a first gear 706 fixedly arranged outside the rotating rod 704, and a first tooth plate 707 arranged at the bottom of the lower mold 3;

[0049] When the lower mold 3 is flipped down for demoulding, the motor 701 can also be started to drive the screw rod 702 connected to its output end to rotate, and the screw rod 702 will drive the rotating rod 704 to move through the moving seat 703. At this time, the movable rotating rod 704 can be rotated through the cooperation of the set first gear 706 and the first tooth plate 707, so that the rotating rod 704 can be driven to roll back and forth at the bottom of the lower mold 3, and the knocking rod 705 outside the movable rotating rod 704 can be used to knock the bottom of the lower mold 3 to make the lower mold 3 vibrate, which is convenient for separating the product from the inner wall of the lower mold 3, thereby further shaking off the product and increasing the demoulding speed.

[0050] like Figure 1 and Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, guide assemblies 9 are provided on both sides of the support frame 2, and the guide assemblies 9 include guide bosses 902 provided on both sides of the support frame 2, U-shaped plates 901 provided on both sides of the connecting plate 501, and guide wheels 903 rotatably provided inside the U-shaped plates 901 and in contact with the guide bosses 902;

[0051] While the upper mold 5 is driven to move vertically by the cylinder 4, the upper mold 5 will drive the guide wheel 903 to roll on the guide boss 902, so that the upper mold 5 can be guided to prevent the upper mold 5 from offsetting during vertical movement and failing to accurately collide with the lower mold 3. Moreover, compared with the guiding method of the prior art through guide columns and sliders, the present invention reduces friction by rolling the guide wheel 903 on the guide boss 902, thereby preventing the guide component 9 from being worn and affecting the normal guiding function of the upper mold 5.

[0052] like Figure 5 , Figure 8 and Fig.13As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a storage groove is provided on the top of the base 1, and protective components 12 are provided on both sides of the base 1, and the protective components 12 include baffles 1201 slidably arranged on both sides of the top of the base 1, a reel 1202 rotatably arranged on the side wall of the base 1, a hanging rope 1203 arranged between the reel 1202 and the bottom of the baffle 1201, an elastic reset member arranged between the baffle 1201 and the base 1, and a transmission component 13 arranged on the top of the base 1 and capable of driving the reel 1202 to rotate when the upper mold 5 moves vertically;

[0053] The transmission assembly 13 includes a pressing plate 1301 arranged on the side wall of the connecting plate 501, a second tooth plate 1303 slidably arranged on the top of the base 1, a push rod 1302 movably arranged between the pressing plate 1301 and the second tooth plate 1303, a second rotating shaft 1304 rotatably arranged at the end of the reel 1202, and a second gear 1305 arranged on the rod wall of the second rotating shaft 1304;

[0054] When the upper mold 5 moves upward and separates from the lower mold 3, the upper mold 5 can drive the pressing plate 1301 to move upward. At this time, the pressing plate 1301 will drive the second tooth plate 1303 to slide toward the two sides of the base 1 through the push rod 1302 and drive the second rotating shaft 1304 provided with the second gear 1305 to rotate. Therefore, the second rotating shaft 1304 will drive the reel 1202 to rotate and reel up the hanging rope 1203, thereby pulling the baffle plate 1201 to move upward. By sliding the baffle plate 1201 above the base 1 and cooperating with the support frame 2, a When the product falls into the storage groove after demoulding, the baffle 1201 and the support frame 2 can block and protect the falling product to prevent the product from falling to the ground and being damaged, and a layer of rubber pad can be laid on the inner wall of the storage groove, so when the product falls into the storage groove, it can avoid scratches on the outer wall of the product due to collision, thereby further improving the quality of the product, and a sliding groove for the sliding of the second tooth plate 1303 is provided at the bottom of the base 1, and a receiving groove for installing the second rotating shaft 1304 and the second gear 1305 is also provided inside the base 1.

[0055] The working principle of the present invention is as follows: during mold injection molding, the cylinder 4 first works to drive the upper mold 5 to move vertically downward to abut against the lower mold 3. When the upper mold 5 is about to abut against the lower mold 3, and when the cylinder 4 drives the upper mold 5 downward, the transmission plate 602 will first drive the rotating column 601 with the incomplete gear 603 to rotate through the tooth grooves on its side wall, so that the lower mold 3 is flipped up with the opening facing upward, and then the tooth grooves of the transmission plate 602 will disengage from the incomplete gear 603. At this time, the strong torsion spring 604 will have a force to drive the rotating column 601 to reverse and reset, but the pawl 804 will jam the ratchet 802, so that the rotating column 601 connected to the first rotating shaft 803 cannot be reversed, so that the flipped rotating column 601 and the lower mold 3 can be positioned, and the cylinder 4 continues to drive the upper mold 5 downward to abut against the flipped lower mold 3.

[0056] At this time, the hot-melt material can be put into the flow cavity 1102 inside the upper mold 5 through the feed head arranged on the top of the upper mold 5, and the hot-melt material then flows into the feed cavity 1104 through the slots on the outer wall of the feed barrel 1101, and then flows downward along the inner wall of the lower mold 3 through the discharge trough. Therefore, when the hot-melt material flows into the lower mold 3, it can prevent the hot-melt material from splashing and generating bubbles, thereby avoiding the problem of holes appearing inside the product after molding. When the hot-melt material fills the lower mold 3, it continues to drive the upper mold 5 to move downward a short distance to completely offset the lower mold 3. At this time, the pressing platform at the bottom of the upper mold 5 can extrude the hot-melt material, and the sealing plug on the side wall of the pressing platform will be pressed into the discharge trough to block and seal the discharge trough, thereby preventing the hot-melt material from flowing back into the feed cavity 1104.

[0057] After the product is formed, when the upper mold 5 is driven by the cylinder 4 to move upward and separate from the lower mold 3, the bolt 806 is first turned upward and screwed in, and the pawl 804 is pulled upward and separated from the ratchet 802 by the pull rope 807. At this time, the ratchet 802, the first rotating shaft 803 and the rotating column 601 can rotate normally. Therefore, after the transmission plate 602 moves up a certain distance, it will drive the rotating column 601 with the incomplete gear 603 to reverse and reset through the tooth groove on its side wall, and then drive the lower mold 3 to flip downward with the mouth facing downward, so that it is more convenient for the lower mold 3 to be demolded under the action of gravity.

[0058] At the same time, the fan 1002 can also be started to work, and the fan 1002 will pass the high-pressure wind into the bellows 1001, and the wind will enter the installation cavity. At this time, the sealing plate 1005 is blown by the high-pressure wind and will slide upward through the moving column 1004. While moving on the moving column 1004, the moving column 1004 can drive the sealing plate 1005 on its top to screw upward through the cooperation of the set protrusions and spiral grooves. Therefore, the sealing plate 1005 that can be screwed in can not only slide down and separate from the lower mold 3 with the product, but also through a number of sealing The sealing plate 1005 can increase the contact area with the bottom of the product to prevent scratches on the bottom of the product. In addition, the screwed-in sealing plate 1005 can also prevent the bottom of the product from sticking to the sealing plate 1005, and after the sealing plate 1005 is screwed in upward, the air outlet will be opened. At this time, high-pressure wind can also be blown into the lower mold 3 through the air outlet, which can not only cool the product, but also push the product down by wind force, thereby further increasing the demoulding speed of the product while avoiding damage to the product and improving the quality of the product.

[0059] And, after the final product is formed, the cylinder 4 drives the upper mold 5 to move upward and separate from the lower mold 3. At this time, the upper mold 5 can drive the pressure plate 1301 to move upward. At this time, the pressure plate 1301 will drive the second tooth plate 1303 to slide toward the two sides of the base 1 through the push rod 1302 and drive the second rotating shaft 1304 provided with the second gear 1305 to rotate. Therefore, the second rotating shaft 1304 will drive the reel 1202 to rotate and reel up the hanging rope 1203, so as to pull the baffle 1201 to move upward. By sliding the baffle 1201 above the base 1 and cooperating with the support frame 2, a fence can be formed outside the storage slot. When the product falls into the storage slot after demolding, the baffle 1201 and the support frame 2 can block and protect the falling product to prevent the product from falling to the ground and being damaged.

[0060] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; all technical solutions and improvements that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An injection mold for easy demoulding, comprising a base (1), a support frame (2) arranged on the top of the base (1), a lower mold (3) movably arranged between the inner walls of both sides of the support frame (2), a propulsion mechanism arranged on the top of the support frame (2), and an upper mold (5) arranged at the output end of the propulsion mechanism, characterized in that: A turning mechanism (6) is provided on the inner wall of the support frame (2) and is capable of driving the lower mold (3) to turn over when the upper mold (5) moves vertically. The turning mechanism (6) comprises a rotating column (601) fixedly arranged on the side walls at both ends of the lower mold (3) and rotatably connected to the inner walls at both sides of the support frame (2), and a rotating component arranged between the rotating column (601) and the upper mold (5). A feeding component (11) is provided between the upper mold (5) and the lower mold (3) and is capable of filling the lower mold (3) with hot-melt material from bottom to top to avoid splashing of the hot-melt material. A demoulding mechanism (10) for ejecting the molded product is also provided at the bottom of the lower mold (3).

2. The injection mold for easy demoulding according to claim 1, characterized in that: The rotating component comprises a connecting plate (501) arranged on the side walls at both ends of the upper mold (5), a transmission plate (602) arranged at the bottom of the connecting plate (501), an incomplete gear (603) sleeved on the outside of the rotating column (601), and a strong torsion spring (604) arranged on the rod wall of the rotating column (601).

3. The injection mold for easy demoulding according to claim 2, characterized in that: The support frame (2) is also provided with a limit assembly (8) on the outside for positioning the rotating column (601) after flipping, and the limit assembly (8) comprises a box body (801) arranged on both sides of the support frame (2), a first rotating shaft (803) rotatably arranged on the inner wall of the box body (801) and passing through the support frame (2) and connected to the rotating column (601), a ratchet (802) arranged on the outside of the first rotating shaft (803), and a ratchet pawl (804) rotatably arranged on the inner wall of the box body (801).

4. The injection mold for easy demoulding according to claim 3, characterized in that: The limiting assembly (8) further comprises a bolt (806) threadedly arranged on the outer wall of the support frame (2) and a pull rope (807) arranged at the bottom of the bolt (806) and passing through the box body (801) and connected to the upper surface of the ratchet (804).

5. The injection mold for easy demoulding according to claim 1, characterized in that: The feed assembly (11) comprises a flow cavity (1102) opened inside the upper mold (5), a feed barrel (1101) arranged on both sides of the bottom of the upper mold (5) and connected to the flow cavity (1102), a feed cavity (1104) arranged inside the lower mold (3), and a slot (1103) arranged on the top of the lower mold (3) and connected to the feed cavity (1104).

6. The injection mold for easy demoulding according to claim 1, characterized in that: The demoulding mechanism (10) comprises an air inlet assembly arranged at the bottom of the lower mold (3), a plurality of fixed cylinders (1003) arranged inside the lower mold (3), a movable column (1004) arranged inside the fixed cylinder (1003), a sealing plate (1005) arranged on the top of the movable column (1004), and a spring (1006) arranged between the movable column (1004) and the inner bottom wall of the fixed cylinder (1003).

7. The injection mold for easy demoulding according to claim 1, characterized in that: A knocking mechanism (7) is provided at the bottom of the lower mold (3), and the knocking mechanism (7) comprises a driving assembly arranged at the bottom of the lower mold (3), a rotating rod (704) arranged on the driving assembly, and a plurality of knocking rods (706) movably arranged outside the rotating rod (704).

8. The injection mold for easy demoulding according to claim 2, characterized in that: Guide assemblies (9) are also provided on both sides of the support frame (2), and the guide assemblies (9) include guide bosses (902) arranged on both sides of the support frame (2), U-shaped plates (901) arranged on both sides of the connecting plate (501), and guide wheels (903) rotatably arranged inside the U-shaped plates (901) and in contact with the guide bosses (902).

9. The injection mold for easy demoulding according to claim 8, characterized in that: The top of the base (1) is provided with a storage groove, and both sides of the base (1) are further provided with protection components (12), the protection components (12) comprising baffles (1201) slidably arranged on both sides of the top of the base (1), a retractable component arranged on the side wall of the base (1) and connected to the baffles (1201), an elastic reset member arranged between the baffles (1201) and the base (1), and a transmission component (13) arranged on the top of the base (1) and capable of driving the retractable component to rotate when the upper mold (5) moves vertically.

10. The injection mold for easy demoulding according to claim 9, characterized in that: The transmission assembly (13) comprises a pressure plate (1301) arranged on the side wall of the connecting plate (501), a second tooth plate (1303) slidably arranged on the top of the base (1), a push rod (1302) movably arranged between the pressure plate (1301) and the second tooth plate (1303), a second rotating shaft (1304) rotatably arranged on the retractable assembly, and a second gear (1305) arranged on the rod wall of the second rotating shaft (1304).

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