Injection molding device and injection molding machine capable of reducing deformation

Abstract

The present invention relates to the technical field of injection molding equipment, and specifically to an injection molding device and an injection molding machine that reduces deformation, wherein a vertical groove is opened at one end of the U-shaped bottom edge of the movable template facing the mold cavity, a movable column is slidably arranged in the vertical groove, a push rod is elastically connected in the movable template, and a push pin is elastically connected in one end of the U-shaped side edge of the movable template facing the mold cavity. When the mold is closed, the push rod is in a state of being elastically ejected toward one side of a transmission device. At this time, the push rod pulls the inner column outwards, and pulls the movable column to slide away from the U-shaped bottom edge of the mold cavity through a pull rope, so that the injection molded part forms reinforcement ribs on its U-shaped bottom edge to increase its anti-deformation ability. When the movable template is pulled open by the transmission device, the fixed top plate pushes the push rod to gradually move horizontally, so that the inner column first drives the push pin to retract into the movable template, and as the inner column continues to move horizontally, the movable column is gradually pushed outwards along the vertical groove until the injection molded part is ejected from the mold along the reinforcement rib position, which is conducive to further reducing deformation.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment, and in particular to an injection molding device and an injection molding machine capable of reducing deformation. Background Art

[0002] Injection molding mainly involves heating thermoplastics or thermosetting plastics into a molten state, applying high pressure to the molten plastic, and injecting it into a mold cavity, then cooling the molten plastic in the mold cavity to form it, and finally demolding it to form an injection molded part with a fixed shape. How to reduce the deformation of the injection molded part is one of the issues that cannot be ignored. To this end, currently conventional methods such as raw material optimization, injection pressure optimization, cooling efficiency optimization, and demolding method optimization are often used. In the prior art, a deformation-proof structure for automobile injection molded parts is disclosed in Chinese patent document CN112606327A. A cooling pipe is cast inside the fixed mold core. The cooling pipe is connected to the infusion port on the side of the fixed mold core. The coolant flows in the mold cooling groove to evenly take away the heat inside the extrusion mold core, thereby pressurizing the mold. After completion, it is cooled quickly, thereby reducing the deformation of the injection molded parts. However, in actual production, especially for long plastic sheet parts, a flying edge is also provided on the long side of the plastic sheet parts, which are often used as slot covers at the slots in various equipment. When in use, the flying edge is inserted into the slot to firmly seal the slots of the equipment. In this regard, even if the cooling efficiency is further improved, the effect of reducing injection deformation cannot be achieved. As a result, when the plastic sheet parts are used as slots for sealing equipment, the sealing is not up or the sealing is not tight, and there are gaps. In the traditional injection molding and hard demolding methods, the flying edge of the plastic sheet parts is pushed outward by a pin. On the one hand, the flying edge that has not been fully formed is prone to deformation, affecting the use of the buckles at the flying edge. On the other hand, it is also easy to cause the overall bending deformation of the plastic sheet parts. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide an injection molding device and an injection molding machine that can reduce deformation, so as to solve the problem that the existing injection molding device and injection molding machine are not sufficient to further reduce deformation, especially when injecting long strip-shaped plastic cover parts.

[0004] Based on the above purpose, the present invention provides an injection molding device for reducing deformation, including a mold clamping system for injection molding, the mold clamping system includes a fixed mold plate and a movable mold plate arranged opposite to each other, one side of the movable mold plate is connected to a transmission device for pushing the mold clamping, and when the mold is clamped, a hollow mold cavity is provided at the center of the contact surface between the fixed mold plate and the movable mold plate:

[0005] The mold cavity is designed in a U-shape, and a vertical groove is provided at one end of the movable mold plate facing the U-shaped bottom edge of the mold cavity, and a movable column is slidably arranged in the vertical groove, and the length direction of the movable column is arranged parallel to the width direction of the U-shaped bottom edge of the mold cavity;

[0006] A top rod is elastically connected inside the movable template, one end of the top rod penetrates into the movable template and is vertically connected to the inner column, and the other end penetrates outside the movable template, a pull rope is connected to the side of the inner column away from the top rod, the pull rope penetrates into the vertical groove and is connected to the movable column;

[0007] An ejector pin is elastically connected to one end of the U-shaped side of the movable template facing the mold cavity, and one end of the ejector pin inserted into the movable template is transmission-connected to the inner column. When the mold is closed, the ejector pin is in a state of being elastically ejected toward one side of the transmission device. At this time, the ejector pin pulls the inner column outward to put the pull rope in a tensioned state. The pull rope pulls the movable column to slide away from the U-shaped bottom edge of the mold cavity, so that a gap is left between the movable column and the U-shaped bottom edge of the mold cavity. At the same time, the ejector pin is pushed outward by the movable column, so that one end of the ejector pin abuts against the inner wall of the fixed template.

[0008] A fixed top plate is provided on one side of the transmission device. When the movable template is pulled open by the transmission device, until the ejector rod reaches the fixed top plate, the ejector rod is pushed to gradually move horizontally through the fixed top plate, so that the inner column first drives the ejector pin to retract into the movable template, and as the inner column continues to move horizontally, the movable column is gradually pushed outward along the vertical groove until the injection molded part is ejected from the mold.

[0009] Preferably, a fixed plug plate is provided at one end of the movable template located on the U-shaped side of the mold cavity, and the fixed plug plate is provided with notches spaced apart along its length direction. When the mold is closed, the fixed plug plate is inserted into the U-shaped side of the mold cavity, and each ejector pin is ejected along the notch, leaving a gap between the inner circle of the notch.

[0010] Preferably, the notch and the movable column are arranged in a staggered manner.

[0011] Preferably, the fixed mold plate is located at an outer opening of the U-shaped side of the mold cavity and is designed to be open.

[0012] Preferably, a transmission groove is opened in the movable template, one end of the ejector pin is inserted into the transmission groove and is connected to a cross plate, one side of the bottom end of the cross plate is connected to a transmission block, the top and bottom ends of the inner column are respectively connected to transmission rods, one end of the transmission rod is inserted into the transmission groove and is rotatably connected to a resistance roller, and the end of the transmission block facing the resistance roller is designed with an inclined end face. When the ejector pin pulls the inner column outward, the resistance roller rolls along the inclined end face of the transmission block, pushing the transmission block outward, thereby driving the cross plate and the ejector pin to be ejected outward.

[0013] Preferably, one end of the transmission rod that passes into the transmission groove is vertically connected to a roller shaft, the abutment roller is rotatably connected to the roller shaft, and a plurality of abutment rollers are arranged at intervals along the axial direction of the roller shaft for correspondingly abutting and pushing each transmission block.

[0014] Preferably, a first elastic member is connected between the transverse plate and the movable template, and the first elastic member is located on the side of the transverse plate close to the transmission block. When the push rod member presses against the fixed top plate and pushes the inner column to move horizontally, the push roller moves away from the transmission block and drives the transverse plate and the push pin member to retract into the movable template through the first elastic member.

[0015] Preferably, rollers are rotatably connected on both sides of the cross plate. When the cross plate moves up and down in the transmission groove, the rollers roll along the inner wall of the transmission groove. A winding wheel is connected to the roller away from the transmission block. A transmission line is wound around the winding wheel. One end of the transmission line is connected to one end of a transmission rod inserted into the transmission groove. When the roller rolls along the inclined end surface of the transmission block and pushes the transmission block to be ejected outward, the transmission line drives the winding wheel to rotate, so that the roller rolls along the inner wall of the transmission groove, driving the cross plate to move outward.

[0016] Preferably, a limiting ring is provided at the outer circle of one end of the ejector pin that penetrates into the transmission groove, and an annular sealing ring is provided on the limiting ring, which is tightly attached to the outer circle of the ejector pin. When the ejector pin is ejected outward, it abuts against the inner wall of the transmission groove through the annular sealing ring.

[0017] The present invention also provides an injection molding machine for reducing deformation, further comprising:

[0018] An injection system is connected to one side of the fixed mold plate, and a hydraulic feeding system is connected to one side of the injection system. A heating system is provided on the injection system. A top block is connected to one end of the ejector member passing through the movable mold plate, and a second elastic member is provided between the ejector block and the movable mold plate. When the mold is closed, the ejector block and the ejector member are pulled outward by the second elastic member so that the ejector member is in a state of being elastically ejected toward one side of the transmission device. When the movable mold plate is opened by the transmission device, until the ejector block hits the fixed top plate, the ejector member is pushed to gradually move horizontally through the fixed top plate until the injection molded part is ejected and demolded.

[0019] The beneficial effects of the present invention are as follows: a vertical groove is provided at one end of the U-shaped bottom edge of the movable template facing the mold cavity, a movable column is slidably provided in the vertical groove, a push rod is elastically connected in the movable template, one end of the push rod penetrates into the movable template and is vertically connected to the inner column, a pull rope is connected to the side of the inner column away from the push rod, the pull rope penetrates into the vertical groove and is connected to the movable column, a push pin is elastically connected in one end of the U-shaped side edge of the movable template facing the mold cavity, one end of the push pin penetrates into the movable template and is transmission-connected to the inner column, when the mold is closed, the push rod is in a state of being elastically ejected toward one side of the transmission device, at which time the push rod pulls the inner column outward to make the pull rod The rope is in a tensioned state, and the pull rope pulls the movable column to slide away from the U-shaped bottom edge of the mold cavity, so that a gap is left between the movable column and the U-shaped bottom edge of the mold cavity, so that the injection-molded part formed by injection forms reinforcing ribs parallel to its width direction on its U-shaped bottom edge, which is beneficial to further increase the deformation resistance of the injection-molded part. When the movable template is pulled open by the transmission device, the fixed top plate pushes the ejector rod to gradually move horizontally, so that the inner column first drives the ejector pin to retract into the movable template, and as the inner column continues to move horizontally, the movable column is gradually pushed outward along the vertical groove until the injection molded part is ejected from the mold, and the mold is ejected along the reinforcing rib position, which is beneficial to further reduce deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the injection molding machine of the present invention during mold closing and injection molding;

[0022] Figure 2 It is a schematic diagram of the overall structure of the injection molding machine of the present invention during demoulding;

[0023] Figure 3 It is a schematic diagram of the overall structure of an injection molding machine during mold closing and injection molding in the prior art;

[0024] Figure 4 It is a schematic diagram of the overall structure of the injection molding machine during demoulding in the prior art;

[0025] Figure 5 It is a structural schematic diagram of the fixed mold plate and the movable mold plate of the present invention when they are molded together;

[0026] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point A in the middle;

[0027] Figure 7 It is a structural schematic diagram of the fixed mold plate and the movable mold plate of the present invention when the mold is opened;

[0028] Figure 8 For the present invention Figure 7 The enlarged schematic diagram of point B in the middle;

[0029] Fig. 9 It is a schematic structural diagram of the movable template of the present invention when demoulding;

[0030] Fig.10 For the present invention Fig. 9 The enlarged schematic diagram of the center C;

[0031] Fig.11 It is a schematic side view of the structure of the injection molded part of the present invention;

[0032] Fig.12 It is a schematic diagram of the top view of the fixed plugboard of the present invention;

[0033] Fig.13 It is a schematic diagram of the top view of the structure of the abutment roller and the injection molded part of the present invention.

[0034] The markings in the figure are:

[0035] 100, transmission device; 200, fixed top plate; 300, injection system; 301, heating system; 400, cooling pipe; 1, fixed mold plate; 2, movable mold plate; 3, mold cavity; 4, vertical groove; 41, inner groove; 5, movable column; 6, ejector rod; 61, ejector block; 62, second elastic member; 7, inner column; 8, pull rope; 9, ejector pin; 10, injection molded part; 101, reinforcing rib; 102, perforated part; 11, fixed plug plate; 12, notch; 13, transmission groove; 14, cross plate; 15, transmission block; 16, transmission rod; 17, roller; 18, roller shaft; 19, first elastic member; 20, roller; 21, winding wheel; 22, transmission line; 23, limit ring; 24, annular sealing ring; 25, elastic cushion. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Fig.11 As shown, a deformation-reducing injection molding device comprises a mold clamping system for injection molding, the mold clamping system comprises a fixed mold plate 1 and a movable mold plate 2 which are arranged relatively to each other, a transmission device 100 for promoting mold clamping is connected to one side of the movable mold plate 2, when the mold is clamped, a hollow mold cavity 3 is arranged at the center of the contact surface between the fixed mold plate 1 and the movable mold plate 2, the mold cavity 3 is designed in a U-shape, a vertical groove 4 is provided at one end of the movable mold plate 2 facing the U-shaped bottom edge of the mold cavity 3, a movable column 5 is slidably arranged in the vertical groove 4, the length direction of the movable column 5 is arranged parallel to the width direction of the U-shaped bottom edge of the mold cavity 3, a push rod 6 is elastically connected in the movable mold plate 2, one end of the push rod 6 penetrates into the movable mold plate 2 and is vertically connected to an inner column 7, and the other end penetrates out of the movable mold plate 2, a pull rope 8 is connected to the side of the inner column 7 away from the push rod 6, the pull rope 8 penetrates into the vertical groove 4 and is connected to the movable column 5, and a U-shaped side edge of the movable mold plate 2 facing the mold cavity 3 is elastically connected to The ejector pin 9 has one end which penetrates into the movable mold plate 2 and is in transmission connection with the inner column 7. When the mold is closed, the ejector pin 6 is in a state of elastic ejection toward one side of the transmission device. At this time, the ejector pin 6 pulls the inner column outward to make the drawstring 8 in a tensioned state. The drawstring 8 pulls the movable column 5 to slide away from the U-shaped bottom edge of the mold cavity 3, so that a gap is left between the movable column 5 and the U-shaped bottom edge of the mold cavity 3. At the same time, the ejector pin 9 is pushed outward by the movable column 5 to make the ejector pin One end of the member 9 abuts against the inner wall of the fixed template 1, and a fixed top plate 200 is provided on one side of the transmission device 100. When the movable template 2 is pulled open by the transmission device 100, until the ejector member 6 abuts against the fixed top plate 200, the ejector member 6 is pushed to gradually move horizontally by the fixed top plate 200, so that the inner column 7 first drives the ejector pin member 9 to retract into the movable template 2, and as the inner column 7 continues to move horizontally, the movable column 5 is gradually pushed outward along the vertical groove 4 until the injection molded part 10 is ejected from the mold.

[0039] The present invention is based on the existing conventional injection molding device and injection molding machine structure, such as Figure 3 , Figure 4 As shown, it includes a mold clamping system for injection molding, the mold clamping system includes a fixed mold plate 1 and a movable mold plate 2 which are arranged opposite to each other, and a transmission device 100 for pushing the mold clamping is connected to one side of the movable mold plate 2. When the mold is clamped, a hollow mold cavity 3 is provided at the center of the contact surface between the fixed mold plate 1 and the movable mold plate 2. When the mold is closed, the mold cavity 3 is designed in a U shape when injecting a long plastic sheet. The bottom side of the U shape is equivalent to the plastic sheet, and the side side of the U shape is equivalent to the flying edge of the plastic sheet. Figure 4 As shown, the ejector pin directly pushes the flying edge to demould, which is obviously easy to cause deformation of the flying edge and the entire plastic sheet. In this regard, a vertical groove 4 is opened at one end of the U-shaped bottom edge of the movable template 2 facing the mold cavity 3, and a movable column 5 is slidably arranged in the vertical groove 4. The length direction of the movable column 5 is parallel to the width direction of the U-shaped bottom edge of the mold cavity 3. The vertical groove 4 and the movable column 5 can be spaced apart along the length direction of the U-shaped bottom edge. A plurality of ejector pins 6 are elastically connected to the movable template 2, which is equivalent to the traditional ejector pin. One end of the ejector pin 6 penetrates into the movable template 2 and is vertically connected to the inner column 7, and the other end penetrates out of the movable template 2. A pull rope 8 is connected to the side of the inner column 7 away from the ejector pin 6. The pull rope 8 penetrates into the vertical groove 4 and is connected to the movable column 5. A ejector pin 9 is elastically connected to one end of the U-shaped side edge of the movable template 2 facing the mold cavity 3. One end of the ejector pin 9 penetrates into the movable template 2 and is transmission-connected to the inner column 7. When the mold is closed, as shown in FIG. Figure 1 , Figure 5 , Figure 6 As shown, the ejector member 6 is in a state of being elastically ejected toward one side of the transmission device. At this time, the ejector member 6 pulls the inner column outward to make the drawstring 8 in a tensioned state. The drawstring 8 pulls the movable column 5 to slide away from the U-shaped bottom edge of the mold cavity 3, so that a gap is left between the movable column 5 and the U-shaped bottom edge of the mold cavity 3, that is, the mold cavity 3 is connected to the gap, and the molten plastic injected into the mold cavity 3 flows into the gap. At the same time, the ejector member 9 is pushed outward by the movable column 5, so that one end of the ejector member 9 abuts against the inner wall of the fixed mold plate 1. As a result, Fig.11 , Fig.13 As shown, the injection molded part 10 formed by injection molding forms a reinforcing rib 101 parallel to its width direction on its U-shaped bottom edge, which is conducive to further increasing the deformation resistance of the injection molded part 10, and avoiding the problem of the injection molded part 10 not being able to cover or not covering tightly due to deformation, resulting in gaps. In addition, a perforated portion 102 is formed on the flying edge of the injection molded part 10 to avoid the position of the top pin 9. When the injection molded part 10 is used as a slot cover, an elastic pin is often provided at the slot of the equipment, which is used to elastically snap into the perforated portion 102, which is conducive to better sealing.

[0040] A fixed top plate 200 is provided on one side of the transmission device 100. When the moving template 2 is pulled open by the transmission device 100, until the top rod 6 reaches the fixed top plate 200, the top rod 6 is pushed by the fixed top plate 200 to gradually move horizontally. Figure 7 , Figure 8 As shown, the inner column 7 first drives the ejector pin 9 to retract into the movable platen 2, and as the inner column 7 continues to move horizontally, the movable column 5 is gradually pushed outward along the vertical groove 4 until the injection molded part 10 is ejected from the mold. Figure 2 , Fig. 9 , Fig.10 As shown, the ejection position is not on the flying edge of the injection molded part 10, but on the reinforcing rib 101 of the injection molded part 10, which is also conducive to further reducing the deformation problem.

[0041] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Fig.12 , Fig.13 As shown, the movable template 2 is provided with a fixed plug plate 11 at one end of the U-shaped side of the mold cavity 3, and the fixed plug plate 11 is provided with notches 12 at intervals along its length direction. When the mold is closed, the fixed plug plate 11 is inserted into the U-shaped side of the mold cavity 3, and each ejector pin 9 is ejected along the notch 12, and a gap is left between the inner circle of the notch 12, so that the flying edge of the injection molded part 10 is designed with multiple separate perforated portions 102, which has a simple structure and saves raw materials. In addition, since the ejection position is not at the flying edge of the injection molded part 10, the perforated portion 102 will not be deformed during ejection.

[0042] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Fig.12 , Fig.13 As shown, the notch 12 is staggered with the movable column 5. When the reinforcing rib 101 is pushed out by the movable column 5, the injection molded part 10 is demoulded outwards due to the inertia and its own weight.

[0043] In an embodiment of the present invention, Figure 5 , Figure 6 As shown, the fixed template 1 is open at the outer opening of the U-shaped side of the mold cavity 3, which is convenient for the ejector pin 9 to extend into the mold cavity 3 along the open opening when the mold is closed.

[0044] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, a transmission groove 13 is provided in the movable template 2, one end of the ejector pin 9 penetrates into the transmission groove 13 and is connected to a transverse plate 14, a transmission block 15 is connected to one side of the bottom end of the transverse plate 14, the top and bottom ends of the inner column 7 are respectively connected to a transmission rod 16, one end of the transmission rod 16 penetrates into the transmission groove 13 and is rotatably connected to a roller 17, and one end of the transmission block 15 facing the roller 17 is designed with an inclined end surface, so that when the ejector pin 6 pulls the inner column 7 outward, as shown in FIG. Figure 5 , Figure 6 As shown, the roller 17 rolls along the inclined end surface of the transmission block 15 to push the transmission block 15 outward, thereby driving the cross plate 14 and the ejector pin 9 to be ejected outward.

[0045] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.13 As shown, one end of the transmission rod 16 that penetrates into the transmission groove 13 is vertically connected to the roller shaft 18, and the abutting roller 17 is rotatably connected to the roller shaft 18, and multiple rollers 17 are arranged at intervals along the axial direction of the roller shaft 18 for correspondingly abutting and pushing each transmission block 15.

[0046] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, a first elastic member 19 is connected between the transverse plate 14 and the movable plate 2, and the first elastic member 19 is located on the side of the transverse plate 14 close to the transmission block 15. When the top rod 6 reaches the fixed top plate 200 and pushes the inner column 7 to move horizontally, as shown in FIG. Figure 7 , Figure 8 As shown, the roller 17 moves away from the transmission block 15 and drives the cross plate 14 and the ejector pin 9 to retract into the movable template 2 through the first elastic member 19.

[0047] The inner side of the vertical groove 4 is also provided with an inner groove 41 for the inner column 7 to slide through. The inner groove 41 and the inner column 7, the vertical groove 4 and the movable column 5 can be designed to be in a corresponding rectangular column shape. The opening size of the inner groove 41 is smaller than the opening size of the vertical groove 4, that is, the vertical groove 4 to the inner groove 41 is designed in a stepped notch. When the mold is closed, Figure 5 , Figure 6As shown, the inner column 7 is slidably arranged on the inner side of the inner groove 41, and the movable column 5 is pulled by the tension of the pull rope 8, so that the movable column 5 is close to the inner side of the vertical groove 4, thereby forming a gap between the movable column 5 and the U-shaped bottom edge of the mold cavity 3, and at the same time, the roller 17 rolls along the inclined end surface of the transmission block 15, pushing the transmission block 15 outward, driving the cross plate 14 and the ejector pin 9 to be ejected outward, and because the first elastic member 19 is located on the side of the cross plate 14 close to the transmission block 15, it is more convenient to The cross plate 14 and the ejector pin 9 are efficiently pushed outward, and when the movable template 2 is pulled open by the transmission device 100, the fixed top plate 200 pushes the ejector pin 6 to gradually move laterally, so that the inner column 7 drives the transmission rod 16 and the roller 17 to move away from the transmission block 15, and drives the cross plate 14 and the ejector pin 9 to retract into the movable template 2 through the first elastic member 19, and continues to move laterally with the inner column 7, gradually pushing the movable column 5 to be ejected outward along the vertical groove 4 until the injection molded part 10 is ejected from the mold.

[0048] Among them, transverse grooves are opened on the transmission groove 13, the inner groove 41 and the vertical groove 4 along the lateral movement direction of the transmission rod 16, through which the transmission rod 16 is passed and moved laterally, and when the mold is closed, the movable column 5 is close to the inner side of the vertical groove 4, closing the outer opening of the transverse groove to avoid the communication between the transverse groove and the mold cavity 3.

[0049] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, preferably, rollers 20 are rotatably connected to both sides of the cross plate 14. When the cross plate 14 moves up and down in the transmission groove 13, the rollers 20 roll along the inner wall of the transmission groove 13, which is beneficial to the efficient sliding of the cross plate 14 along the transmission groove 13. More preferably, a winding wheel 21 is connected to the roller 20 away from the side of the transmission block 15, and a transmission line 22 is wound around the winding wheel 21. One end of the transmission line 22 is connected to one end of a transmission rod 16 inserted into the transmission groove 13. When the roller 17 rolls along the inclined end surface of the transmission block 15 and pushes the transmission block 15 to be ejected outward, the transmission rod 16 moves laterally and pulls the transmission line 22. The winding wheel 21 is driven to rotate by the transmission line 22, so that the roller 20 rolls along the inner wall of the transmission groove 13, which is further beneficial to efficiently drive the cross plate 14 to move outward.

[0050] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, optionally, a limiting ring 23 is provided at the outer circle of one end of the ejector pin 9 that penetrates into the transmission groove 13, and an annular sealing ring 24 is provided on the limiting ring 23, which is tightly attached to the outer circle of the ejector pin 9. Specifically, the annular sealing ring 24 adopts an existing conventional high-temperature resistant mold sealing ring component, considering that a gap is left between the ejector pin 9 and the through-hole through which the ejector pin 9 penetrates into the transmission groove 13, so as to achieve the purpose of smooth up and down movement of the ejector pin 9. When the ejector pin 9 is ejected outward, it abuts against the inner wall of the transmission groove 13 through the annular sealing ring 24, and tightly closes the gap of the through-hole, so as to achieve a better sealing effect. More preferably, the limiting ring 23 is elastically connected to the bottom end of the ejector pin 9, which is beneficial to the elastic abutment and sealing of the annular sealing ring 24.

[0051] Optionally, an elastic cushion layer 25 may be provided at the connection between the bottom end of the ejector pin 9 and the transverse plate 14 , so as to facilitate the ejector pin 9 to elastically abut against the inner wall of the fixed template 1 .

[0052] The present invention also provides an injection molding machine for reducing deformation, including a mold clamping system for injection molding, and further comprising:

[0053] An injection system 300 is connected to one side of the fixed mold plate 1, and a hydraulic feeding system is connected to one side of the injection system 300 for feeding materials into the injection system 300. A heating system 301 is provided on the injection system 300 for heating the plastic into a molten state. A cooling pipe 400 for cooling the molding is provided in the fixed mold plate 1. A top block 61 is connected to one end of the ejector member 6 passing through the outside of the movable mold plate 2. A second elastic member 62 is provided between the ejector block 61 and the movable mold plate 2. When the mold is closed, the ejector block 61 and the ejector member 6 are pulled outward by the second elastic member 62, so that the ejector member 6 is in a state of being elastically ejected toward one side of the transmission device 100. When the movable mold plate 2 is pulled open by the transmission device 100, until the ejector block 61 hits the fixed top plate 200, the ejector member 6 is pushed to gradually move laterally by the fixed top plate 200 until the injection molded part 10 is ejected and demolded.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. An injection molding device for reducing deformation, comprising a mold clamping system for injection molding, wherein the mold clamping system comprises a fixed mold plate (1) and a movable mold plate (2) arranged opposite to each other, a transmission device (100) for pushing the mold clamping is connected to one side of the movable mold plate (2), and when the mold is clamped, a hollow mold cavity (3) is provided at the center of the contact surface between the fixed mold plate (1) and the movable mold plate (2), characterized in that: The mold cavity (3) is designed in a U-shape, and a vertical groove (4) is provided at one end of the movable mold plate (2) facing the U-shaped bottom edge of the mold cavity (3), and a movable column (5) is slidably arranged in the vertical groove (4), and the length direction of the movable column (5) is arranged parallel to the width direction of the U-shaped bottom edge of the mold cavity (3); A push rod (6) is elastically connected to the movable template (2), one end of the push rod (6) penetrates into the movable template (2) and is vertically connected to an inner column (7), and the other end penetrates outside the movable template (2), a pull rope (8) is connected to the side of the inner column (7) away from the push rod (6), and the pull rope (8) penetrates into the vertical groove (4) and is connected to the movable column (5); An ejector pin (9) is elastically connected to one end of the U-shaped side of the movable template (2) facing the mold cavity (3); one end of the ejector pin (9) that penetrates into the movable template (2) is transmission-connected to the inner column (7); when the mold is closed, the ejector pin (6) is in a state of being elastically ejected toward one side of the transmission device (100); at this time, the ejector pin (6) pulls the inner column (7) outwards to put the pull rope (8) in a tensioned state; the pull rope (8) pulls the movable column (5) to slide away from the U-shaped bottom edge of the mold cavity (3) so that a gap is left between the movable column (5) and the U-shaped bottom edge of the mold cavity (3); at the same time, the ejector pin (9) is pushed outwards by the movable column (5) so that one end of the ejector pin (9) abuts against the inner wall of the fixed template (1); A fixed top plate (200) is provided on one side of the transmission device (100). When the movable mold plate (2) is pulled open by the transmission device (100), until the ejector rod (6) abuts against the fixed top plate (200), the ejector rod (6) is gradually moved horizontally by the fixed top plate (200), so that the inner column (7) first drives the ejector pin (9) to retract into the movable mold plate (2), and as the inner column (7) continues to move horizontally, the movable column (5) is gradually pushed outward along the vertical groove (4) until the injection molded part (10) is ejected from the mold; The movable plate (2) is provided with a fixed plug plate (11) at one end of the U-shaped side of the mold cavity (3), and the fixed plug plate (11) is provided with notches (12) at intervals along its length direction. When the mold is closed, the fixed plug plate (11) is inserted into the U-shaped side of the mold cavity (3), and each ejector pin (9) is ejected along the notch (12), and a gap is left between the inner circle of the notch (12); A transmission groove (13) is provided in the movable template (2), one end of the ejector pin (9) penetrates into the transmission groove (13) and is connected to a transverse plate (14), one side of the bottom end of the transverse plate (14) is connected to a transmission block (15), the top and bottom ends of the inner column (7) are respectively connected to transmission rods (16), one end of the transmission rod (16) penetrates into the transmission groove (13) and is rotatably connected to a resisting roller (17), one end of the transmission block (15) facing the resisting roller (17) is designed with an inclined end surface, when the ejector pin (6) pulls the inner column (7) outward, the resisting roller (17) rolls along the inclined end surface of the transmission block (15), pushes the transmission block (15) outward, and drives the transverse plate (14) and the ejector pin (9) to be ejected outward; A first elastic member (19) is connected between the transverse plate (14) and the movable plate (2), and the first elastic member (19) is located on a side of the transverse plate (14) close to the transmission block (15). When the push rod member (6) abuts against the fixed top plate (200) and pushes the inner column (7) to move horizontally, the push roller (17) moves away from the transmission block (15) and drives the transverse plate (14) and the push pin member (9) to retract into the movable plate (2) through the first elastic member (19).

2. The deformation-reducing injection molding device according to claim 1, characterized in that: The notch (12) and the movable column (5) are arranged in a staggered manner.

3. The deformation-reducing injection molding device according to claim 1, characterized in that: The fixed mold plate (1) is located at the outer opening of the U-shaped side of the mold cavity (3) and is designed to be open.

4. The deformation-reducing injection molding device according to claim 1, characterized in that: One end of the transmission rod (16) that penetrates into the transmission groove (13) is vertically connected to a roller shaft (18), and abutting rollers (17) are rotatably connected to the roller shaft (18), and a plurality of abutting rollers (17) are arranged at intervals along the axial direction of the roller shaft (18) for correspondingly abutting and pushing each transmission block (15).

5. The deformation-reducing injection molding device according to claim 1, characterized in that: The two sides of the transverse plate (14) are rotatably connected with rollers (20). When the transverse plate (14) moves up and down in the transmission groove (13), the rollers (20) roll along the inner side wall of the transmission groove (13). The rollers (20) on the side away from the transmission block (15) are connected with a winding wheel (21). A transmission line (22) is wound around the winding wheel (21). One end of the transmission line (22) is connected to one end of a transmission rod (16) inserted into the transmission groove (13). When the rollers (17) roll along the inclined end surface of the transmission block (15) and push the transmission block (15) to be ejected outward, the transmission line (22) drives the winding wheel (21) to rotate, so that the rollers (20) roll along the inner side wall of the transmission groove (13), and drive the transverse plate (14) to be ejected outward.

6. The deformation-reducing injection molding device according to claim 1, characterized in that: A limiting ring (23) is provided at the outer ring of one end of the ejector pin (9) that penetrates into the transmission groove (13), and an annular sealing ring (24) is provided on the limiting ring (23) that is in close contact with the outer ring of the ejector pin (9). When the ejector pin (9) is ejected outward, it abuts against the inner wall of the transmission groove (13) through the annular sealing ring (24).

7. An injection molding machine for reducing deformation, the injection molding machine comprising the injection molding device for reducing deformation according to any one of claims 1 to 6, characterized in that: Also includes: An injection system (300) is connected to one side of a fixed mold plate (1), and a hydraulic material feeding system is connected to one side of the injection system (300). A heating system (301) is provided on the injection system (300). An end of the ejector member (6) passing through the outside of the movable mold plate (2) is connected to an ejector block (61). A second elastic member (62) is provided between the ejector block (61) and the movable mold plate (2). When the mold is closed, the ejector block (61) and the ejector member (6) are pulled outward by the second elastic member (62) so that the ejector member (6) is in a state of being elastically ejected toward one side of a transmission device (100). When the movable mold plate (2) is opened by the transmission device (100), until the ejector block (61) abuts against the fixed ejector plate (200), the ejector member (6) is pushed by the fixed ejector plate (200) to gradually move horizontally until the injection molded part (10) is ejected and demolded.

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