Injection molding device with easy demoulding and use method thereof

Abstract

The present invention discloses an injection molding device that is easy to demold and a method for using the same, belonging to the technical field of injection molding devices. An injection molding device that is easy to demold comprises a base, and also comprises: a mold base assembly, the mold base assembly comprises an upper mold base and a lower mold base, the lower mold base is fixed on the base, a hydraulic oil cylinder for controlling the lifting of the upper mold base is provided on the base through a bracket, and a cavity for injection molding is provided on both the upper mold base and the lower mold base; a support base, the support base comprises a straight plate fixed on the base and a horizontal plate vertically connected to the straight plate, a spraying mechanism for spraying a demolding agent is provided on the horizontal plate; a liquid squeezing mechanism, the liquid squeezing mechanism is provided on the base, and is used to drive the spraying mechanism to move on the support base and discharge liquid; the present invention can automatically spray the demolding agent in the mold cavity and air dry it when the upper mold base and the lower mold base are closed, which facilitates product demolding while effectively reducing the workload of the staff, reducing the waiting time for spraying and drying the demolding agent before closing the mold, and improving the injection molding production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding devices, and in particular to an injection molding device that is easy to demould and a use method thereof. Background Art

[0002] An injection mold is a tool used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a process used in the mass production of complex-shaped parts. Specifically, molten plastic is injected into the mold cavity under high pressure using an injection molding machine. After cooling and solidification, the resulting molded part is formed. After the injection process is completed, the plastic part cools and sets within the mold cavity. Due to volumetric contraction, a clamping force is applied to the core. This clamping force creates friction that must be overcome when ejecting the part from the mold. For plastic parts like cylinders and shells without through-holes, atmospheric pressure must also be overcome during ejection.

[0003] To ensure smooth injection molding production and avoid extended production cycles due to mold release difficulties, the mold cavity surface must be sprayed or wiped with a layer of release agent, with reapplication required after every one to two demolding attempts. Traditionally, this method requires workers to spray the mold surface with a spray can. Manual operation can lead to uneven spraying, requiring workers to wipe off excess release agent with a rag after spraying. Injection molding also requires waiting for the release agent to dry before proceeding, which takes a long time and affects both efficiency and quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an injection molding device that is easy to demould and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An injection molding device that is easy to demould comprises a base and further comprises:

[0007] A mold base assembly, comprising an upper mold base and a lower mold base, wherein the lower mold base is fixed on a base, and a hydraulic cylinder for controlling the lifting of the upper mold base is provided on the base through a bracket, and a mold cavity for injection molding is provided on both the upper mold base and the lower mold base;

[0008] A support base, the support base comprising a straight plate fixed on the base and a horizontal plate vertically connected to the straight plate, the horizontal plate being provided with a spraying mechanism for spraying a release agent;

[0009] a liquid squeezing mechanism, the liquid squeezing mechanism being disposed on the base and configured to drive the spraying mechanism to move on the support seat and discharge liquid; and

[0010] The ejection mechanism is arranged in the lower mold base and is used to eject the injection molded part in the mold cavity.

[0011] Preferably, the spraying mechanism includes a movable frame slidably connected to the horizontal plate, a placement tube is rotatably connected in the movable frame, a liquid storage bottle for storing the release agent is provided in the placement tube, a first support plate is provided on the base, a first elastic element is provided on the first support plate, the end of the first elastic element away from the first support plate is connected to a push seat, and the placement tube is rotatably connected in the push seat.

[0012] Preferably, the liquid storage bottle includes a bottle body, an elastic telescopic tube arranged at the end of the bottle body, an atomizing spray port opened on the elastic telescopic tube, and a top plate arranged at the end of the elastic telescopic tube away from the bottle body, the placement tube is threadedly connected with a fastening bolt that is movably opposed to the bottle body, a micro fan is fixed in the top plate, and an air outlet is opened on the side of the top plate.

[0013] Preferably, the extrusion mechanism includes a second support plate fixed on the base, a screw is rotatably connected to the second support plate, a sleeve is threadedly connected to the screw, an extrusion plate is provided on the sleeve, a rotating plate is rotatably provided on the extrusion plate and is movably opposed to the top plate, a driven gear is provided at the end of the screw, and a movable rack meshing with the driven gear is provided on the outer side of the upper mold base.

[0014] Preferably, a fixed plate is fixed on the bracket, a movable groove is opened on the fixed plate, the movable groove includes two upper and lower transverse grooves and an inclined groove for connecting the two transverse grooves, a sliding rod is slidably connected in the movable groove, a connecting seat is fixed on the sliding rod, a third elastic telescopic rod is provided between the connecting seat and the sleeve, the end of the connecting seat away from the sliding rod is connected to the liquid squeezing plate, and the liquid squeezing plate is slidably connected to the sleeve.

[0015] Preferably, a third support plate is fixed on the base, a fixing rod is fixed on the third support plate, and a track groove that matches the fixing rod is opened on the placement tube.

[0016] Preferably, a first elastic telescopic rod is fixedly provided on the top of the straight plate, and the end of the first elastic telescopic rod away from the straight plate is connected to a movable plate, and one end of the movable plate is inclinedly provided with a force-bearing plate that is movably opposed to the sleeve, and a second elastic telescopic rod is fixedly provided on the end of the movable plate away from the force-bearing plate, and the end of the second elastic telescopic rod away from the movable plate is connected to an insertion rod, and the end of the insertion rod is provided with an extrusion inclined surface that is movably opposed to the movable frame, and the movable frame is provided with a slot that cooperates with the insertion rod.

[0017] Preferably, the ejection mechanism includes a lifting plate slidably arranged in the lower mold base, a second elastic element is arranged between the lifting plate and the bottom of the lower mold base, an ejection rod is arranged on the side of the lifting plate away from the second elastic element, and a lower pressure plate is arranged on the outer side of the upper mold base to resist the lifting plate.

[0018] Preferably, a rack plate is provided on the lower pressure plate, an ear plate is provided at the bottom of the lifting plate, the ear plate is rotatably connected to a rotating rod, the rotating rod is provided with a movable gear engaged with the rack plate, and the rotating rod is also provided with an elastic retractable top block that resists the movement of the lifting plate.

[0019] The present invention also discloses a method for using an injection molding device that is easy to demould, comprising the following steps:

[0020] S1: When closing the mold, the hydraulic cylinder is controlled to operate. The piston rod of the hydraulic cylinder pushes the upper mold base downward. The movable rack on the outer side of the upper mold base first meshes with the driven gear at the end of the screw, and the driven gear drives the screw to rotate.

[0021] S2: The screw drives the rotating plate to move through the squeezing plate, causing the rotating plate to press against the top plate of the liquid storage bottle. Since the liquid storage bottle is fixed in the placement tube, and the other side of the placement tube is squeezed by the first elastic element through the push seat, the top plate transmits force to the elastic telescopic tube when it is stressed. The elastic telescopic tube is compressed, causing the release agent in the bottle to be atomized and sprayed out through the atomizing liquid spray port, and the sprayed release agent is sprayed into the cavity of the lower mold base;

[0022] S3: After the elastic expansion tube is squeezed to its limit, as the squeeze plate continues to move, the elastic expansion tube remains squeezed. Then, the squeezing plate transmits the thrust of the liquid storage bottle to the placement tube. The placement tube squeezes the first elastic element through the push seat, and the placement tube drives the liquid storage bottle to move laterally, so that the atomized liquid spray port sprays the release agent along the length direction of the cavity during the lateral movement.

[0023] S4: During the transverse movement of the placement tube, the outer track groove cooperates with the fixed rod on the third support plate, so that the fixed rod guides the movement direction of the placement tube during the transverse movement. Because the track groove is a continuous V-shape, the placement tube rotates back and forth during the transverse movement. The placement tube drives the atomizing spray nozzle on the liquid storage bottle to swing left and right and spray in the cavity. The atomizing spray nozzle sprays the release agent evenly on the bottom wall and the inner walls on both sides of the cavity;

[0024] During the horizontal movement of the placement tube, the micro fan in the top plate is controlled to work. The airflow generated by the micro fan is discharged through the air outlet. The airflow discharged from the air outlet can blow the release agent sprayed in the cavity, so that the position where the release agent is sprayed more in the cavity flows to other positions, reducing the thickness of the release agent in the cavity and accelerating the drying of the release agent.

[0025] S5: As the placement tube is continuously pushed and moved laterally, when the extrusion plate is about to move out of the cavity range of the lower die base, the connecting seat connected to the extrusion plate drives the slide bar to slide in the inclined groove of the moving groove, so that the connecting seat drives the extrusion plate to move upward relative to the top plate, and the third elastic telescopic rod recovers and stretches;

[0026] During this period, the movable frame that slides on the horizontal plate as the placement tube moves moves to the insertion rod, and the movable frame applies force to the insertion rod extrusion slope, and the insertion rod is forced to squeeze the second elastic telescopic rod;

[0027] After the atomizing liquid spraying port moves out of the cavity range of the lower die base, the sliding rod moves to the end of the movable groove. At this time, the squeezing plate no longer contacts the top plate through the rotating plate, the elastic telescopic tube is reset, and the atomizing liquid spraying port no longer sprays the release agent. At this time, the slot on the movable frame is aligned with the insertion rod. The insertion rod is reset and inserted into the movable frame under the elastic force of the second elastic telescopic rod, which defines the position of the placement tube and the liquid storage bottle at this time.

[0028] S6: The piston rod of the hydraulic cylinder continuously pushes the upper die base downward. The lower pressure plate of the upper die base presses against the lifting plate. The lifting plate drives the ejector rod downward. The ejector rod and the inner wall of the bottom side of the lower die base cavity are in the same plane. At this time, the upper die base and the lower die base are molded together. The injection molding liquid is injected into the cavity through the injection equipment.

[0029] S7: After the injection molded part in the cavity is cooled and formed, the hydraulic cylinder drives the upper mold base to move upward through the piston rod. The lower pressure plate of the upper mold base no longer presses against the lifting plate. During the movement of the lower pressure plate, it engages with the movable gear on the rotating rod. The movable gear drives the rotating rod to rotate. The rotating rod drives the elastic telescopic top block to continuously impact the lifting plate, causing the lifting plate to vibrate at a low frequency, loosening the injection molded part in the cavity. The lifting plate cooperates with the compressed second elastic element to push the loosened injection molded part to the top of the lower mold base, completing the demoulding of the lower mold base.

[0030] S8: Then the moving rack on the outside of the upper mold base engages with the driven gear for transmission, which in turn drives the screw to reverse, causing the sleeve to reset and move back along the axial direction of the screw. During this process, the slide rod moves along the upper horizontal groove of the movable groove and enters the inclined groove. The third elastic telescopic rod is squeezed and finally enters the lower horizontal groove from the inclined groove. At this time, the sleeve abuts the force plate at the end of the movable plate, and the force plate drives the movable plate to move on the horizontal plate. The first elastic telescopic rod is compressed, and when the movable plate moves, it drives the insertion rod to move through the second elastic telescopic rod. The insertion rod moves out of the slot of the movable frame, and the placement tube connected to the movable frame is no longer restricted. The compressed first elastic element drives the placement tube to move back through the push seat, so that the placement tube drives the liquid storage bottle to reset, preparing for repeated spraying of the release agent in the subsequent cavity.

[0031] Compared with the prior art, the present invention provides an injection molding device that is easy to demould and a method for using the same, which has the following beneficial effects:

[0032] 1. This easy-to-demold injection molding device and its use method, when the upper mold base and the lower mold base are closed, the liquid extrusion mechanism and the spraying mechanism cooperate to automatically spray the mold release agent into the mold cavity and air dry it, which facilitates product demolding while effectively reducing the workload of the staff, shortens the waiting time for the mold release agent spraying and drying before closing the mold, and improves the injection molding production efficiency.

[0033] 2. The injection molding device which is easy to demold and its use method, by matching the outer track groove of the placement tube with the fixed rod on the third support plate during the lateral movement, the fixed rod guides the movement direction of the placement tube during the lateral movement. Because the track groove is a continuous V-shape, the placement tube rotates back and forth during the lateral movement, and the placement tube drives the atomizing spray nozzle on the liquid storage bottle to swing left and right in the cavity and spray. The atomizing spray nozzle sprays the release agent evenly on the bottom wall and the inner walls on both sides of the cavity, thereby improving the uniformity of the release agent spraying. In this process, the airflow generated by the micro fan when it is working is discharged through the air outlet. The airflow discharged from the air outlet can blow the release agent sprayed in the cavity, so that the position where the release agent is sprayed more in the cavity flows to other positions, reducing the thickness of the release agent in the cavity, preventing bubbles from occurring, and accelerating the drying of the release agent, thereby ensuring the injection molding production efficiency and production quality.

[0034] 3. The injection molding device with easy demolding and its use method, by aligning and matching the insertion rod with the slot and limiting the movable frame, makes the spray assembly fixed on one side of the mold base when the mold is closed, avoiding affecting the downward movement of the upper mold base. At this time, the squeezing plate no longer pushes the top plate, the elastic telescopic tube resets and the atomizing spray port no longer sprays the release agent, so that the release agent automatically stops spraying, avoiding waste of the release agent.

[0035] 4. The injection molding device and its use method that are easy to demold, when the upper mold base moves upward, drives the lower pressure plate to move upward, and the lower pressure plate no longer presses against the lifting plate. During the period of moving up, the lower pressure plate engages with the movable gear on the rotating rod, and the movable gear drives the rotating rod to rotate. The rotating rod drives the elastic telescopic top block to continuously impact the lifting plate, causing the lifting plate to vibrate at a low frequency, thereby loosening the injection molded part in the cavity. The lifting plate cooperates with the compressed second elastic element to push the loosened injection molded part to the top of the lower mold base, completing the demolding work of the lower mold base, thereby improving the demolding efficiency and demolding effect.

[0036] 5. The injection molding device which is easy to demold and the method of using the same are as follows: the liquid extrusion mechanism is reset and moved back during the upward movement of the upper mold base, the sleeve abuts against the force-bearing plate at the end of the movable plate, and the force-bearing plate drives the movable plate to move on the horizontal plate. The first elastic telescopic rod is compressed, and when the movable plate moves, the insertion rod is driven to move by the second elastic telescopic rod, and the insertion rod moves out of the slot of the movable frame. The placement tube connected to the movable frame is no longer restricted, and the compressed first elastic element drives the placement tube to move back through the push seat, so that the placement tube drives the liquid storage bottle to reset, in preparation for repeated spraying of the release agent on the subsequent cavity. Continuous injection molding production of the injection molding device can be achieved only by controlling the upward and downward movement of the upper mold base. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0038] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0039] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure of the middle part A;

[0040] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0041] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of part B in the middle;

[0042] Figure 6 For the present invention Figure 4 Schematic diagram of the partially enlarged structure of the middle C part;

[0043] Figure 7 This is a schematic structural diagram of the placement tube of the present invention;

[0044] Figure 8 It is a structural schematic diagram of the support base of the present invention;

[0045] Figure 9 It is a structural schematic diagram of the upper die base of the present invention when it moves downward;

[0046] Figure 10 For the present invention Figure 9 A schematic diagram of the partially enlarged structure of the middle D part;

[0047] Figure 11 It is a structural schematic diagram of the lifting plate of the present invention.

[0048] In the figure: 1. base; 101. bracket; 2. upper die base; 3. lower die base; 4. hydraulic cylinder; 5. cavity; 6. support base; 601. straight plate; 602. horizontal plate; 603. first elastic telescopic rod; 604. movable plate; 6041. load-bearing plate; 605. second elastic telescopic rod; 606. insertion rod; 7. movable frame; 701. placement tube; 7011. fastening bolt; 7012. track groove; 8. liquid storage bottle; 801. bottle body; 802. elastic telescopic tube; 803. atomizing spray port; 804. top plate; 8041. air outlet; 9. first support plate; 901. first elastic element; 902, push seat; 10, second support plate; 1001, screw; 1002, sleeve; 1003, squeeze plate; 1004, rotating plate; 1005, driven gear; 1006, movable rack; 11, third support plate; 111, fixed rod; 12, slot; 13, lifting plate; 131, second elastic element; 132, ejector rod; 14, lower pressure plate; 141, rack plate; 15, ear plate; 151, rotating rod; 152, movable gear; 153, elastic telescopic ejector block; 16, fixed plate; 161, movable slot; 162, slide rod; 163, connecting seat; 164, third elastic telescopic rod. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0051] Example 1: Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 9 , an injection molding device that is easy to demould, comprising a base 1, and further comprising:

[0052] The mold base assembly includes an upper mold base 2 and a lower mold base 3. The lower mold base 3 is fixed on the base 1. A hydraulic cylinder 4 for controlling the lifting of the upper mold base 2 is provided on the base 1 through a bracket 101. A cavity 5 for injection molding is provided on both the upper mold base 2 and the lower mold base 3.

[0053] The support base 6 includes a straight plate 601 fixed on the base 1 and a horizontal plate 602 vertically connected to the straight plate 601. The horizontal plate 602 is provided with a spraying mechanism for spraying a release agent;

[0054] A liquid squeezing mechanism, which is disposed on the base 1 and is used to drive the spraying mechanism to move on the support base 6 and discharge liquid; and

[0055] The ejection mechanism is arranged in the lower mold base 3 and is used to eject the injection molded part in the cavity 5.

[0056] After the upper mold base 2 and the lower mold base 3 are closed, the ejection mechanism in the lower mold base 3 automatically works, and the product in the mold cavity 5 of the lower mold base 3 is quickly demolded. As the upper mold base 2 continues to move upward, the extrusion mechanism and the spraying mechanism are reset to prepare for the subsequent injection molding device to continue injection molding. The operation of this application is simple. By only controlling the upward and downward movement of the upper mold base 2, it can facilitate continuous injection and demolding of the product while effectively reducing the workload of the staff, reducing the waiting time for spraying and drying the demolding agent before mold closing, and improving the injection molding production efficiency.

[0057] Example 2: Reference Figure 1-9 , an injection molding device that is easy to demold, based on Example 1, further, the spraying mechanism includes a mobile frame 7 slidably connected to the horizontal plate 602, a placement tube 701 is rotatably connected in the mobile frame 7, a liquid storage bottle 8 for storing a release agent is provided in the placement tube 701, a first support plate 9 is provided on the base 1, a first elastic element 901 is provided on the first support plate 9, an end of the first elastic element 901 away from the first support plate 9 is connected to a push seat 902, and the placement tube 701 is rotatably connected in the push seat 902.

[0058] Furthermore, the liquid storage bottle 8 includes a bottle body 801, an elastic telescopic tube 802 arranged at the end of the bottle body 801, an atomizing spray port 803 opened on the elastic telescopic tube 802, and a top plate 804 arranged at the end of the elastic telescopic tube 802 away from the bottle body 801. A fastening bolt 7011 is threadedly connected to the placement tube 701 and is movably opposed to the bottle body 801. A micro fan is fixed in the top plate 804, and an air outlet 8041 is opened on the side of the top plate 804.

[0059] Furthermore, the extrusion mechanism includes a second support plate 10 fixed on the base 1, a screw 1001 is rotatably connected to the second support plate 10, a sleeve 1002 is threadedly connected to the screw 1001, a squeezing plate 1003 is provided on the sleeve 1002, a rotating plate 1004 is rotatably provided on the squeezing plate 1003 and is movably opposed to the top plate 804, a driven gear 1005 is provided at the end of the screw 1001, and a movable rack 1006 meshing with the driven gear 1005 is provided on the outer side of the upper mold base 2.

[0060] Furthermore, a third support plate 11 is fixedly provided on the base 1 , a fixing rod 111 is fixedly provided on the third support plate 11 , and a track groove 7012 that matches the fixing rod 111 is formed on the placement tube 701 .

[0061] Specifically, when closing the mold, the hydraulic cylinder 4 is controlled to operate, and the piston rod of the hydraulic cylinder 4 pushes the upper mold base 2 to move downward. The movable rack 1006 on the outer side of the upper mold base 2 is first engaged with the driven gear 1005 at the end of the screw 1001 for transmission. The driven gear 1005 drives the screw 1001 to rotate, and the screw 1001 drives the rotating plate 1004 to move through the squeezing plate 1003, so that the rotating plate 1004 presses against the top plate 804 of the liquid storage bottle 8. Since the liquid storage bottle 8 is fixed in the placement tube 701, and the other side of the placement tube 701 is connected to the first elastic The elastic element 901 is squeezed, and the top plate 804 is subjected to force, which transmits the force to the elastic telescopic tube 802. The elastic telescopic tube 802 is compressed, so that the release agent in the bottle body 801 is atomized and sprayed out through the atomizing liquid spray port 803, and the sprayed release agent is sprayed into the cavity 5 of the lower mold base 3. After the elastic telescopic tube 802 is squeezed to the limit, as the squeezing plate 1003 continues to move, the elastic telescopic tube 802 remains squeezed. Subsequently, the thrust of the squeezing plate 1003 on the liquid storage bottle 8 is transmitted to the placement tube 701, and the placement tube 701 pushes the first elastic element through the push seat 902. The part 901 is squeezed, and the placement tube 701 drives the liquid storage bottle 8 to move horizontally, so that the atomized liquid spray port 803 sprays the release agent along the length direction of the cavity 5 during the horizontal movement. During the horizontal movement of the placement tube 701, the outer track groove 7012 cooperates with the fixed rod 111 on the third support plate 11, so that the fixed rod 111 guides the movement direction of the placement tube 701 during the horizontal movement. Because the track groove 7012 is a continuous V-shape, the placement tube 701 rotates back and forth during the horizontal movement, and the placement tube 701 drives the atomized liquid spray port 803 on the liquid storage bottle 8 to swing left and right in the cavity 5. Dynamic spraying, the atomizing liquid spray port 803 sprays the release agent evenly on the bottom wall and the inner walls on both sides of the cavity 5, thereby improving the uniformity of the release agent spraying. In this process, the airflow generated by the micro fan when working is discharged through the air outlet 8041. The airflow discharged from the air outlet 8041 can blow the release agent sprayed in the cavity 5, so that the position where the release agent is sprayed more in the cavity 5 flows to other positions, reducing the thickness of the release agent in the cavity 5, further making the release agent evenly scattered, preventing bubbles from occurring, and accelerating the drying of the release agent, thereby ensuring the injection molding production efficiency and production quality.

[0062] Example 3: Reference Figure 1-10 , an injection molding device that is easy to demold, based on Example 2, further, a fixed plate 16 is fixed on the bracket 101, and a movable groove 161 is opened on the fixed plate 16, and the movable groove 161 includes two upper and lower transverse grooves and an inclined groove for connecting the two transverse grooves, and a sliding rod 162 is slidably connected in the movable groove 161, and a connecting seat 163 is fixed on the sliding rod 162, and a third elastic telescopic rod 164 is arranged between the connecting seat 163 and the sleeve 1002, and the end of the connecting seat 163 away from the sliding rod 162 is connected to the liquid squeezing plate 1003, and the liquid squeezing plate 1003 is slidably connected to the sleeve 1002.

[0063] Furthermore, a first elastic telescopic rod 603 is fixed to the top of the straight plate 601, and the end of the first elastic telescopic rod 603 away from the straight plate 601 is connected to a movable plate 604, and one end of the movable plate 604 is inclinedly provided with a force-bearing plate 6041 that is movably opposed to the sleeve 1002, and the end of the movable plate 604 away from the force-bearing plate 6041 is fixed with a second elastic telescopic rod 605, and the end of the second elastic telescopic rod 605 away from the movable plate 604 is connected to an insertion rod 606, and the end of the insertion rod 606 is provided with an extrusion slope that is movably opposed to the movable frame 7, and the movable frame 7 is provided with a slot 12 that cooperates with the insertion rod 606.

[0064] Specifically, as the placement tube 701 is continuously pushed and moved horizontally, when the extrusion plate 1003 is about to move out of the range of the cavity 5 of the lower mold base 3, the connecting seat 163 connected to the extrusion plate 1003 drives the slide bar 162 to slide in the inclined groove of the moving groove 161, so that the connecting seat 163 drives the extrusion plate 1003 to move upward relative to the top plate 804, and the third elastic telescopic rod 164 recovers and stretches. During this period, the movable frame 7 that slides on the horizontal plate 602 as the placement tube 701 moves moves to the insertion rod 606. At this point, the movable frame 7 applies a force to the inclined surface of the insertion rod 606, and the insertion rod 606 is forced to squeeze the second elastic telescopic rod 605. After the atomizing liquid spraying port 803 moves out of the range of the cavity 5 of the lower mold base 3, the slide bar 162 moves to the end of the movable groove 161. At this time, the squeezing plate 1003 no longer contacts the top plate 804 through the rotating plate 1004, the elastic telescopic tube 802 is reset, and the atomizing liquid spraying port 803 no longer sprays the release agent, so that the release agent automatically stops spraying, thereby avoiding waste of the release agent. At this time, the slot 12 on the movable frame 7 is aligned with the insertion rod 606, and the insertion rod 606 is reset and inserted into the movable frame 7 under the elastic force of the second elastic telescopic rod 605, which limits the position of the placement tube 701 and the liquid storage bottle 8 at this time. During the upward movement of the upper mold base 2, the liquid extrusion mechanism is reset and moved back, and the sleeve 1002 abuts the force plate 6041 at the end of the movable plate 604. The force plate 6041 is forced to drive the movable plate 604 to move on the horizontal plate 602, and the first elastic telescopic rod 603 is compressed. The movable plate When 604 moves, the second elastic telescopic rod 605 drives the insertion rod 606 to move, and the insertion rod 606 moves out of the slot 12 of the movable frame 7. The placement tube 701 connected to the movable frame 7 is no longer restricted, and the compressed first elastic element 901 drives the placement tube 701 to move back through the push seat 902, so that the placement tube 701 drives the liquid storage bottle 8 to reset, preparing for the subsequent repeated spraying of the release agent on the cavity 5. Only by controlling the upward and downward movement of the upper mold base 2, the continuous injection and demolding production of the injection molding device can be realized.

[0065] Example 4: Reference Figure 1 、 Figure 2 、 Figure 4 、 Figure 9 and Figure 11, an injection molding device that is easy to demold, based on Example 3, further, the ejection mechanism includes a lifting plate 13 slidably arranged in the lower mold base 3, a second elastic element 131 is arranged between the lifting plate 13 and the bottom of the lower mold base 3, an ejection rod 132 is arranged on the side of the lifting plate 13 away from the second elastic element 131, and a lower pressure plate 14 is arranged on the outer side of the upper mold base 2, which is movably opposed to the lifting plate 13.

[0066] Furthermore, a rack plate 141 is provided on the lower pressure plate 14, and an ear plate 15 is provided at the bottom of the lifting plate 13. The ear plate 15 is rotatably connected to a rotating rod 151, and the rotating rod 151 is provided with a movable gear 152 that meshes with the rack plate 141. The rotating rod 151 is also provided with an elastic retractable top block 153 that is movably opposed to the lifting plate 13.

[0067] Specifically, the piston rod of the hydraulic cylinder 4 continuously pushes the upper mold base 2 downward, and the lower pressure plate 14 of the upper mold base 2 presses the lifting plate 13, and the lifting plate 13 drives the ejector rod 132 to move downward. The ejector rod 132 and the inner wall of the bottom side of the cavity 5 of the lower mold base 3 are in the same plane. At this time, the upper mold base 2 and the lower mold base 3 are molded together, and the injection molding liquid is injected into the cavity 5 through the injection equipment. After the injection molded part in the cavity 5 is cooled and formed, the hydraulic cylinder 4 drives the upper mold base 2 to move upward through the piston rod, and the lower pressure plate 14 of the upper mold base 2 no longer presses the lifting plate The plate 13 is pressed, and the lower pressure plate 14 is meshed with the movable gear 152 on the rotating rod 151 during the upward movement. The movable gear 152 drives the rotating rod 151 to rotate, and the rotating rod 151 drives the elastic telescopic top block 153 to continuously impact the lifting plate 13, so that the lifting plate 13 vibrates at a low frequency, so that the injection molded parts in the cavity 5 are loosened. The lifting plate 13 cooperates with the compressed second elastic element 131 to push the loosened injection molded parts to the top of the lower mold base 3, completing the demoulding work of the lower mold base 3, and improving the demoulding efficiency and demoulding effect.

[0068] The present invention also discloses a method for using an injection molding device that is easy to demould, comprising the following steps:

[0069] S1: When closing the mold, the hydraulic cylinder 4 is controlled to operate. The piston rod of the hydraulic cylinder 4 pushes the upper mold base 2 downward. The movable rack 1006 on the outer side of the upper mold base 2 first meshes with the driven gear 1005 at the end of the screw 1001, and the driven gear 1005 drives the screw 1001 to rotate.

[0070] S2: The screw 1001 drives the rotating plate 1004 to move through the squeezing plate 1003, causing the rotating plate 1004 to press against the top plate 804 of the liquid storage bottle 8. Since the liquid storage bottle 8 is fixed in the placement tube 701, and the other side of the placement tube 701 is squeezed by the first elastic element 901 through the push seat 902, the top plate 804 transmits the force to the elastic telescopic tube 802 when it is under force. The elastic telescopic tube 802 is compressed, causing the release agent in the bottle body 801 to be atomized and sprayed out through the atomizing liquid spray port 803, and the sprayed release agent is sprayed into the cavity 5 of the lower mold base 3;

[0071] S3: After the elastic telescopic tube 802 is squeezed to its limit, as the squeezing plate 1003 continues to move, the elastic telescopic tube 802 remains squeezed. Subsequently, the pushing force of the squeezing plate 1003 on the liquid storage bottle 8 is transmitted to the placement tube 701. The placement tube 701 squeezes the first elastic element 901 through the push seat 902. The placement tube 701 drives the liquid storage bottle 8 to move laterally, so that the atomizing spray port 803 sprays the release agent along the length direction of the cavity 5 during the lateral movement.

[0072] S4: During the lateral movement of the placement tube 701, the outer track groove 7012 cooperates with the fixed rod 111 on the third support plate 11, so that the fixed rod 111 guides the movement direction of the placement tube 701 during the lateral movement. Since the track groove 7012 is a continuous V-shape, the placement tube 701 rotates back and forth during the lateral movement. The placement tube 701 drives the atomizing spray port 803 on the liquid storage bottle 8 to swing left and right and spray the cavity 5. The atomizing spray port 803 evenly sprays the release agent on the bottom wall and the inner walls on both sides of the cavity 5;

[0073] During the transverse movement of the placement tube 701, the micro-blower in the top plate 804 is controlled to operate. The airflow generated by the micro-blower is discharged through the air outlet 8041. The airflow discharged from the air outlet 8041 can blow the mold release agent sprayed in the cavity 5, so that the mold release agent in the cavity 5 where more is sprayed flows to other locations, thereby reducing the thickness of the mold release agent in the cavity 5 and accelerating the drying of the mold release agent.

[0074] S5: As the placement tube 701 is continuously pushed and moved laterally, when the squeeze plate 1003 is about to move out of the cavity 5 of the lower die base 3, the connecting seat 163 connected to the squeeze plate 1003 drives the slide bar 162 to slide in the inclined groove of the moving groove 161, so that the connecting seat 163 drives the squeeze plate 1003 to move upward relative to the top plate 804, and the third elastic telescopic rod 164 recovers and stretches;

[0075] During this period, the movable frame 7 sliding on the horizontal plate 602 moves to the insertion rod 606 as the placement tube 701 moves. The movable frame 7 applies a force to the insertion rod 606 to squeeze the inclined surface. The insertion rod 606 is pressed by the force to squeeze the second elastic telescopic rod 605.

[0076] After the atomizing liquid spraying port 803 moves out of the range of the cavity 5 of the lower mold base 3, the sliding rod 162 moves to the end of the movable groove 161. At this time, the squeezing plate 1003 no longer contacts the top plate 804 through the rotating plate 1004. The elastic telescopic tube 802 is reset and the atomizing liquid spraying port 803 no longer sprays the release agent. At this time, the slot 12 on the movable frame 7 is aligned with the insertion rod 606. The insertion rod 606 is reset and inserted into the movable frame 7 under the elastic force of the second elastic telescopic rod 605, thereby limiting the position of the placement tube 701 and the liquid storage bottle 8 at this time.

[0077] S6: The piston rod of the hydraulic cylinder 4 continuously pushes the upper mold base 2 downward. The lower pressure plate 14 of the upper mold base 2 presses against the lifting plate 13. The lifting plate 13 drives the ejector rod 132 downward. The ejector rod 132 and the bottom inner wall of the cavity 5 of the lower mold base 3 are in the same plane. At this time, the upper mold base 2 and the lower mold base 3 are molded together. The injection molding liquid is injected into the cavity 5 through the injection equipment.

[0078] S7: After the injection molded part in the cavity 5 is cooled and formed, the hydraulic cylinder 4 drives the upper mold base 2 to move upward through the piston rod, and the lower pressure plate 14 of the upper mold base 2 no longer presses the lifting plate 13. During the upward movement of the lower pressure plate 14, it engages with the movable gear 152 on the rotating rod 151 for transmission. The movable gear 152 drives the rotating rod 151 to rotate, and the rotating rod 151 drives the elastic telescopic top block 153 to continuously impact the lifting plate 13, causing the lifting plate 13 to vibrate at a low frequency, so that the injection molded part in the cavity 5 is loosened. The lifting plate 13 cooperates with the compressed second elastic element 131 to push the loosened injection molded part to the top of the lower mold base 3, completing the demoulding work of the lower mold base 3;

[0079] S8: Then the movable rack 1006 on the outside of the upper die base 2 is meshed with the driven gear 1005 for transmission, thereby driving the screw 1001 to reverse, causing the sleeve 1002 to reset and move back along the axial direction of the screw 1001. During this process, the slide bar 162 moves along the upper transverse groove of the movable groove 161 and enters the inclined groove. The third elastic telescopic rod 164 is squeezed and finally enters the lower transverse groove from the inclined groove. At this time, the sleeve 1002 abuts against the force plate 6041 at the end of the movable plate 604, and the force plate 6041 is subjected to force. The movable plate 604 is driven to move on the horizontal plate 602, and the first elastic telescopic rod 603 is compressed. When the movable plate 604 moves, the insertion rod 606 is driven to move through the second elastic telescopic rod 605. The insertion rod 606 moves out of the slot 12 of the movable frame 7, and the placement tube 701 connected to the movable frame 7 is no longer restricted. The compressed first elastic element 901 drives the placement tube 701 to move back through the push seat 902, so that the placement tube 701 drives the liquid storage bottle 8 to reset, preparing for the subsequent repeated spraying of the release agent on the cavity 5.

[0080] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An injection molding device that is easy to demould, comprising a base (1), characterized in that: Also includes: A die base assembly, the die base assembly comprising an upper die base (2) and a lower die base (3), the lower die base (3) being fixed on a base (1), a hydraulic cylinder (4) for controlling the lifting of the upper die base (2) being provided on the base (1) via a bracket (101), and a cavity (5) for injection molding being provided on both the upper die base (2) and the lower die base (3); A support base (6), the support base (6) comprising a straight plate (601) fixed on the base (1) and a horizontal plate (602) vertically connected to the straight plate (601), wherein a spraying mechanism for spraying a release agent is provided on the horizontal plate (602); A liquid squeezing mechanism, the liquid squeezing mechanism being arranged on the base (1) and being used to drive the spraying mechanism to move on the support seat (6) and discharge liquid; as well as An ejection mechanism, the ejection mechanism being arranged in the lower mold base (3) and being used for ejecting the injection molded part in the mold cavity (5); The spraying mechanism comprises a movable frame (7) slidably connected to the transverse plate (602), a placement tube (701) rotatably connected in the movable frame (7), a liquid storage bottle (8) for storing a release agent is provided in the placement tube (701), a first support plate (9) is provided on the base (1), a first elastic element (901) is provided on the first support plate (9), an end of the first elastic element (901) away from the first support plate (9) is connected to a push seat (902), and the placement tube (701) is rotatably connected in the push seat (902); The liquid storage bottle (8) comprises a bottle body (801), an elastic telescopic tube (802) arranged at the end of the bottle body (801), an atomizing liquid spray port (803) provided on the elastic telescopic tube (802), and a top plate (804) provided at one end of the elastic telescopic tube (802) away from the bottle body (801); a fastening bolt (7011) that is movably opposed to the bottle body (801) is threadedly connected to the placement tube (701); a micro fan is fixedly provided in the top plate (804); and an air outlet (8041) is provided on the side of the top plate (804); The extrusion mechanism comprises a second support plate (10) fixedly mounted on the base (1), a screw (1001) being rotatably connected to the second support plate (10), a sleeve (1002) being threadedly connected to the screw (1001), an extrusion plate (1003) being provided on the sleeve (1002), a rotating plate (1004) being rotatably mounted on the extrusion plate (1003) and being movably opposed to the top plate (804), a driven gear (1005) being provided at the end of the screw (1001), and a movable rack (1006) being meshed with the driven gear (1005) being provided on the outer side of the upper die base (2); A third support plate (11) is fixedly provided on the base (1), a fixing rod (111) is fixedly provided on the third support plate (11), and a track groove (7012) matching the fixing rod (111) is provided on the placement tube (701).

2. The easy-to-demold injection molding device according to claim 1, characterized in that: A fixed plate (16) is fixed on the bracket (101), and a movable groove (161) is opened on the fixed plate (16), and the movable groove (161) includes two upper and lower transverse grooves and an inclined groove for connecting the two transverse grooves. A sliding rod (162) is slidably connected in the movable groove (161), and a connecting seat (163) is fixed on the sliding rod (162). A third elastic telescopic rod (164) is provided between the connecting seat (163) and the sleeve (1002), and one end of the connecting seat (163) away from the sliding rod (162) is connected to the squeezing plate (1003), and the squeezing plate (1003) is slidably connected to the sleeve (1002).

3. The easy-to-demold injection molding device according to claim 2, characterized in that: A first elastic telescopic rod (603) is fixedly provided on the top of the straight plate (601), and an end of the first elastic telescopic rod (603) away from the straight plate (601) is connected to a movable plate (604), and an end of the movable plate (604) is obliquely provided with a force-bearing plate (6041) that movably resists the sleeve (1002), and an end of the movable plate (604) away from the force-bearing plate (6041) is fixedly provided with a second elastic telescopic rod (605), and an end of the second elastic telescopic rod (605) away from the movable plate (604) is connected to an insertion rod (606), and an end of the insertion rod (606) is provided with an extrusion inclined surface that movably resists the movable frame (7), and a slot (12) that matches the insertion rod (606) is provided on the movable frame (7).

4. The easy-to-demold injection molding device according to claim 3, characterized in that: The ejection mechanism comprises a lifting plate (13) slidably arranged in the lower die base (3), a second elastic element (131) is arranged between the lifting plate (13) and the bottom of the lower die base (3), an ejection rod (132) is arranged on the side of the lifting plate (13) facing away from the second elastic element (131), and a lower pressing plate (14) is arranged on the outer side of the upper die base (2) and is movably opposed to the lifting plate (13).

5. The easy-to-demold injection molding device according to claim 4, characterized in that: The lower pressure plate (14) is provided with a rack plate (141), the bottom of the lifting plate (13) is provided with an ear plate (15), the ear plate (15) is rotatably connected to a rotating rod (151), the rotating rod (151) is provided with a movable gear (152) meshing with the rack plate (141), and the rotating rod (151) is also provided with an elastic telescopic top block (153) that is movably opposed to the lifting plate (13).

6. A method for using the easy-to-demold injection molding device according to claim 5, characterized in that: The following steps are involved: S1: When closing the mold, the hydraulic cylinder (4) is controlled to operate, and the piston rod of the hydraulic cylinder (4) pushes the upper mold base (2) downward, and the movable rack (1006) on the outer side of the upper mold base (2) first meshes with the driven gear (1005) at the end of the screw (1001) to transmit the drive, and the driven gear (1005) drives the screw (1001) to rotate; S2: The screw (1001) drives the rotating plate (1004) to move through the squeezing plate (1003), so that the rotating plate (1004) presses against the top plate (804) of the liquid storage bottle (8). Since the liquid storage bottle (8) is fixed in the placement tube (701), and the other side of the placement tube (701) is squeezed by the first elastic element (901) through the push seat (902), the top plate (804) transmits the force to the elastic telescopic tube (802) when it is stressed. The elastic telescopic tube (802) is compressed, so that the release agent in the bottle body (801) is sprayed out through the atomizing liquid spray port (803), and the sprayed release agent is sprayed into the cavity (5) of the lower mold base (3); S3: After the elastic telescopic tube (802) is squeezed to the limit, as the squeezing plate (1003) continues to move, the elastic telescopic tube (802) remains squeezed, and then the pushing force of the squeezing plate (1003) on the liquid storage bottle (8) is transmitted to the placement tube (701), and the placement tube (701) squeezes the first elastic element (901) through the push seat (902), and the placement tube (701) drives the liquid storage bottle (8) to move horizontally, so that the atomizing spray port (803) sprays the release agent along the length direction of the cavity (5) during the horizontal movement; S4: During the transverse movement of the placement tube (701), the outer track groove (7012) cooperates with the fixed rod (111) on the third support plate (11), so that the fixed rod (111) guides the movement direction of the placement tube (701) during the transverse movement. Since the track groove (7012) is in a continuous V-shape, the placement tube (701) rotates back and forth during the transverse movement. The placement tube (701) drives the atomizing liquid spraying port (803) on the liquid storage bottle (8) to swing left and right and spray inside the cavity (5). The atomizing liquid spraying port (803) sprays the release agent evenly on the bottom wall and the inner walls on both sides of the cavity (5); During the transverse movement of the placement tube (701), the micro fan in the top plate (804) is controlled to operate. The airflow generated by the micro fan when operating is discharged through the air outlet (8041). The airflow discharged from the air outlet (8041) can blow the release agent sprayed in the cavity (5), so that the position where the release agent is sprayed more in the cavity (5) flows to other positions, thereby reducing the thickness of the release agent in the cavity (5) and accelerating the drying of the release agent. S5: As the placement tube (701) is continuously pushed and moved horizontally, when the extrusion plate (1003) is about to move out of the range of the cavity (5) of the lower mold base (3), the connecting seat (163) connected to the extrusion plate (1003) drives the slide bar (162) to slide in the inclined groove of the moving groove (161), so that the connecting seat (163) drives the extrusion plate (1003) to move upward relative to the top plate (804), and the third elastic telescopic rod (164) recovers and stretches; During this period, the movable frame (7) sliding on the horizontal plate (602) moves to the insertion rod (606) as the placement tube (701) moves, and the movable frame (7) applies a force to the insertion rod (606) to squeeze the inclined surface, and the insertion rod (606) is forced to squeeze the second elastic telescopic rod (605); After the atomizing liquid spraying port (803) moves out of the range of the cavity (5) of the lower mold base (3), the slide rod (162) moves to the end of the movable groove (161), at which time the squeezing plate (1003) no longer contacts the top plate (804) through the rotating plate (1004), the elastic telescopic tube (802) is reset, and the atomizing liquid spraying port (803) no longer sprays the release agent, and at this time the slot (12) on the movable frame (7) is aligned with the insertion rod (606), and the insertion rod (606) is reset and inserted into the movable frame (7) under the elastic force of the second elastic telescopic rod (605), thereby limiting the position of the placement tube (701) and the liquid storage bottle (8) at this time; S6: The piston rod of the hydraulic cylinder (4) continuously pushes the upper mold base (2) downward, the lower pressure plate (14) of the upper mold base (2) presses against the lifting plate (13), and the lifting plate (13) drives the ejector rod (132) to move downward. The ejector rod (132) and the inner wall of the bottom side of the cavity (5) of the lower mold base (3) are in the same plane. At this time, the upper mold base (2) and the lower mold base (3) are molded together, and the injection molding liquid is injected into the cavity (5) through the injection equipment; S7: After the injection molded part in the mold cavity (5) is cooled and formed, the hydraulic cylinder (4) drives the upper mold base (2) to move upward through the piston rod, and the lower pressure plate (14) of the upper mold base (2) no longer presses against the lifting plate (13). During the upward movement of the lower pressure plate (14), it engages with the movable gear (152) on the rotating rod (151) for transmission. The movable gear (152) drives the rotating rod (151) to rotate, and the rotating rod (151) drives the elastic telescopic top block (153) to continuously impact the lifting plate (13), causing the lifting plate (13) to vibrate at a low frequency, thereby loosening the injection molded part in the mold cavity (5). The lifting plate (13) cooperates with the compressed second elastic element (131) to push the loosened injection molded part to the top of the lower mold base (3), completing the demoulding work of the lower mold base (3); S8: Then the movable rack (1006) on the outside of the upper die seat (2) is meshed with the driven gear (1005) to drive, thereby driving the screw (1001) to reverse, so that the sleeve (1002) is reset and moved back along the axial direction of the screw (1001). During this process, the slide bar (162) moves along the upper transverse groove of the movable groove (161) and enters the inclined groove. The third elastic telescopic rod (164) is squeezed and finally enters the lower transverse groove from the inclined groove. At this time, the sleeve (1002) abuts against the force plate (6041) at the end of the movable plate (604). The force plate (6041) is driven by the force to move. The plate (604) moves on the horizontal plate (602), the first elastic telescopic rod (603) is compressed, and the movable plate (604) drives the insertion rod (606) to move through the second elastic telescopic rod (605). The insertion rod (606) moves out of the slot (12) of the movable frame (7), and the placement tube (701) connected to the movable frame (7) is no longer restricted. The compressed first elastic element (901) drives the placement tube (701) to move back through the push seat (902), so that the placement tube (701) drives the liquid storage bottle (8) to reset, preparing for the subsequent repeated spraying of the release agent on the cavity (5).

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