Injection molding machine capable of quickly reversing mold

Abstract

The invention relates to the technical field of injection molding equipment, and discloses an injection molding machine capable of quickly reversing a mold, the injection molding machine comprises a workbench, an injection mechanism is fixedly mounted on the upper surface of the workbench, a conveying box is fixedly mounted on the upper surface of the workbench, and a conveying mechanism capable of performing mold butt joint transfer is arranged in the conveying box; and a sealing assembly capable of reducing heat loss of the mold pouring gate in the injection molding operation process is arranged in the conveying box. The sealing assembly is arranged and is matched with the piston rod and the piston plate to compress the interior of the piston barrel, and is matched with the air guide pipe to exhaust air in the sealed space, so that the sealed space tends to be vacuum, and the stability of the four sets of sealing arc plates wound around the outer side of an injection molding opening of the injection mechanism can be improved; and meanwhile, a good heat insulation effect is achieved on an area close to vacuum near an injection molding structure of the injection molding mechanism, the heat loss of an injection molding opening is reduced, and the injection molding effect of the device and the production quality of plastic products are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to an injection molding machine capable of rapid mold reversal. Background Art

[0002] The core feature of an injection molding machine that can quickly reverse the mold is that it can quickly and accurately complete the mold replacement, thereby improving production efficiency and flexibility. This type of injection molding machine usually uses an advanced quick mold change system, such as a magnetic template or an electric permanent magnetic suction cup, to achieve rapid adsorption and release of the mold.

[0003] According to a publicly disclosed injection molding machine capable of rapid mold reversal (Announcement No.: CN118700440A), in the above application, the injection mold is transported to the target position by a tripod-type grabbing structure, and is fixed on the left and right sides of the mold by electromagnetic suction plates arranged on the left and right sides of the equipment. It is then transported by a transmission structure and docked with the injection port, so that both ends of the mold can be positioned during the injection molding process to maintain the stability of the injection molding process and the safety of the mold.

[0004] However, in actual use of the above-mentioned equipment, since the injection mold is reversed in a separate manner, there is a docking process between the mold and the injection port of the injection mechanism, and there may be a gap between the injection port of the injection mechanism and the gate of the mold during the injection process, resulting in the injection port and the gate being exposed during the injection process, causing heat loss in the molten plastic during the injection process, thereby affecting the molding effect of the molten plastic in the cavity of the injection mold and reducing the product quality of the plastic product; in view of this, we propose an injection molding machine that can be quickly reversed. Summary of the invention

[0005] The object of the present invention is to provide an injection molding machine capable of rapid mold reversal to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection molding machine capable of rapid mold casting, comprising a workbench, a grabbing robot is arranged on the side surface of the upper surface of the workbench, an injection mechanism is fixedly installed on the upper surface of the workbench, a conveying box is fixedly installed on the upper surface of the workbench, a conveying mechanism capable of mold docking and transfer is arranged inside the conveying box, a threaded slide is slidably installed on the bottom inner wall of the conveying box, a right electromagnetic suction plate is slidably installed on the bottom inner wall of the conveying box, and a closing component capable of reducing heat loss of the mold gate during the injection molding operation is arranged inside the conveying box.

[0007] Preferably, the closing component includes a fixing plate, which is fixedly mounted on the inner wall of the conveying box, a T-shaped slider is slidably mounted on the inner wall of the fixing plate away from the injection mechanism, a closing arc plate is fixedly mounted on the end of the T-shaped slider, an arc plate is fixedly mounted on the outer wall of one side of the closing arc plate, an air guide tube is fixedly connected to the outer wall of the fixing plate away from the closing arc plate, a piston cylinder is fixedly mounted on the side wall of the fixing plate, a piston plate is slidably mounted on the inner wall of the piston cylinder, a piston rod is fixedly connected to the side wall of the piston plate, a small motor is fixedly mounted on the upper surface of the threaded slide, a transmission screw is fixedly mounted on the output end of the small motor, a threaded plate is threadedly connected to the outer wall of the transmission screw, an ejection slider is fixedly connected to the side wall of the threaded plate, an ejection rod is arranged inside the ejection slider, and a focusing cover is fixedly mounted on the outer wall of the right electromagnetic suction plate close to the fixing plate.

[0008] Preferably, a T-shaped groove matched with the size of the T-shaped slider is provided on the side wall of the fixed plate, so that the T-shaped slider drives the closed arc plate to slide linearly only along the side wall of the fixed plate, and the number of the T-shaped slider and the closed arc plate is four groups, and the four groups of T-shaped sliders and the closed arc plates are evenly distributed in a circular array on the outside of the hole opened inside the fixed plate, and the inner wall of the fixed plate is provided with an air hole matched with the air guide tube, and the air hole is arranged corresponding to the end of the air guide tube, the arc plate is arranged on one side of the closed arc plate, and the other side of the closed arc plate is provided with an arc groove matched with the arc plate, so that when the four groups of closed arc plates are tightened, the arc plates and the arc grooves are tightly attached to each other.

[0009] Preferably, the ejector rod includes a cylindrical section and a square column section, the cylindrical section is arranged at one end close to the ejection slider, the square column section is arranged at one side close to the fixed plate, and the inner wall of the end of the piston rod close to the ejector rod is provided with a square groove adapted to the square column section, so that the ejector rod will enter the square groove when it approaches the piston rod, and the convergence cover includes a large diameter end and a small diameter end, and the large diameter end is arranged close to one end of the closed arc plate.

[0010] Preferably, the conveying mechanism includes a driving motor, which is fixedly mounted on the outer wall of a conveying box away from an injection mechanism. A threaded rod is fixedly mounted on the output end of the driving motor, and a threaded slide is threadedly connected to the outer wall of the threaded rod. A left electromagnetic suction plate is fixedly mounted on the end of the threaded slide close to the driving motor, an injection mold is provided on the side of the left electromagnetic suction plate, a right electromagnetic suction plate is slidably mounted on the inner wall of the conveying box, and a guide block is fixedly mounted on the side wall of the right electromagnetic suction plate.

[0011] Preferably, the inner walls of the left electromagnetic suction plate and the right electromagnetic suction plate are provided with through holes whose diameter is larger than the outer diameter of the threaded rod, so that the rotation of the threaded rod will not cause motion interference to the left electromagnetic suction plate and the right electromagnetic suction plate. A controller and a power supply device are provided inside the conveying box, and the controller is electrically connected to the left electromagnetic suction plate, the right electromagnetic suction plate and the power supply device, so that the controller can control the power on and off of the left electromagnetic suction plate and the right electromagnetic suction plate according to the actual requirements of the injection molding process.

[0012] Preferably, a positioning component is provided inside the closed arc plate to ensure the connection stability of the closed arc plate, the positioning component includes a transmission cavity, the transmission cavity is opened inside the closed arc plate, a square slider is slidably installed on the inner wall of the transmission cavity, a positioning arc plate is fixedly installed on the end of the square slider away from the closed arc plate, a return spring is fixedly connected between the top of the square slider and the top inner wall of the transmission cavity, a guide arc rod is slidably installed on the inner wall of the transmission cavity, the guide arc rod is arranged in an arc-shaped T-shape, and an insert rod is fixedly installed on the end of the guide arc rod, and guide springs are fixedly connected to both ends of the guide arc rod.

[0013] Preferably, the transmission cavity includes a vertical cavity and an arc cavity, the arc cavity is adapted to the guide arc rod, and the lower surface of the guide arc rod on one side close to the center of the closed arc plate is arranged to be arc-shaped, and an arc block is arranged at the top of the square slider, which contacts the outer surface of the gate of the injection mold when the positioning arc plate is in contact with the closed arc plate and the arc plate is tightened.

[0014] Preferably, a buffer assembly is provided inside the ejection slider which can delay the extrusion contact transmission between the ejection rod and the piston rod, the buffer assembly includes a circular cavity, a circular cavity is provided inside the ejection rod, a threaded groove is provided on the inner surface of the circular cavity, a transmission rod is rotatably mounted on the inner wall of one end of the ejection slider away from the ejection rod, a transmission ball is fixedly mounted on the arc-shaped outer wall of the transmission rod, a threaded slide plate is slidably mounted on the inner wall of the ejection slider, and a connecting spring is fixedly connected between the threaded slide plate and the end of the ejection rod.

[0015] Preferably, the side wall of the threaded slide is provided with an anti-slip assembly that can support the bottom of the injection mold, and the anti-slip assembly includes a round rod, the side wall of the threaded slide is fixedly installed with a connecting ear, the connecting ear is rotatably connected to the end of the round rod, the round rod passes through and is fixedly installed with an L-shaped supporting piece, the arc-shaped outer wall of the end of the round rod is sleeved with a vortex spring, the upper surface of the L-shaped supporting piece is opened with a contraction cavity, the inner wall of the contraction cavity is slidably installed with a toothed plate, the top of the toothed plate is fixedly installed with a contact plate, the bottom end of the contact plate and the inner wall of the bottom end of the contraction cavity are fixedly connected with an ejection spring, the inner wall of the contraction cavity is rotatably installed with a gear, the axis of the gear is fixedly connected with a hinged rod, the end of the hinged rod away from the gear is fixedly installed with a fixing rod, the end of the fixing rod is rotatably installed with a limiting plate, and the arc-shaped outer wall of the fixing rod is sleeved with a coil spring.

[0016] Compared with the prior art, the present invention provides an injection molding machine capable of rapid mold reversal, which has the following beneficial effects:

[0017] 1. The injection molding machine capable of rapid mold reversal is provided with a closing component. Four groups of closing arc plates are affected by the approaching convergence cover and are surrounded by the injection port of the injection mechanism and the outside of the gate of the injection mold, thereby forming a closed space. Then, the ejector slider drives the ejector rod, cooperates with the piston rod and the piston plate to compress the inside of the piston cylinder, and cooperates with the air guide pipe to evacuate the above-mentioned closed space, so that the closed space tends to be a vacuum. This can not only improve the stability of the four groups of closing arc plates arranged around the outside of the injection port of the injection mechanism, but also have a good heat insulation effect on the vacuum zone near the injection structure of the injection mechanism, reduce the heat loss of the injection port, and ensure the injection molding effect of the device and the production quality of the plastic product.

[0018] 2. The injection molding machine capable of rapid mold reversal is provided with a positioning assembly. When the closed arc plates are affected by the convergence cover, the four groups of closed arc plates are subjected to a centering tightening movement, so that the positioning arc plates protruding from the closed arc plates can first contact with the outer surface of the gate of the injection mold, and as the closed arc plates continue to move, until the four groups of closed arc plates completely form a cylindrical structure, the positioning arc plates shrink into the arc receiving grooves, and cooperate with the arc blocks on the top of the square sliders to squeeze the guide arc rods, prompting the insertion rods to enter the insertion holes on the sides of the closed arc plates, thereby ensuring the stability of the cylindrical structure formed by the four groups of closed arc plates, and further ensuring the positioning and protection effect on the outer surface of the gate of the injection mold.

[0019] 3. The injection molding machine capable of rapid mold reversal is provided with a buffer assembly. When driven by a small motor, the connecting spring in the ejector slider is compressed to a larger value due to the elastic force and then pushes the ejector rod to exert force on the piston rod. At this time, the four groups of closed arc plates have formed a closed space outside the gate of the injection mold. At this time, the compression of the piston plate on the piston cylinder can evacuate the closed space through the air guide pipe to make the closed space tend to be a vacuum. At the same time, the relative rotation of the ejector rod and the transmission rod can cause the threaded slide plate to slide along the inside of the ejector slider, thereby causing the elastic force of the connecting spring to always remain in a state of pressing against the ejector rod, thereby avoiding repeated shaking during the evacuation process, thereby affecting the gate protection effect of the closed assembly on the injection mold.

[0020] 4. The injection molding machine capable of rapid mold reversal is provided with an anti-slip assembly. During the process in which the L-shaped supporting member contacts the injection mold and deflects toward one side of the threaded slide, the bottom of the injection mold contacts the top of the contact plate and is squeezed toward the inside of the contraction cavity. At this time, the gear is transmitted by the toothed plate, thereby prompting the hinged rod to drive the limiting plate to move upward to fit tightly against the bottom surface of the injection mold. The coil spring is provided so that the limiting plate always has a pushing force toward one side of the threaded slide, thereby ensuring the fit between the injection mold and the L-shaped supporting member and ensuring that the L-shaped supporting member can provide stable support for the injection mold at the bottom to ensure safety during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the transmission box of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the transmission component and the sealing component of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing plate and the piston cylinder of the present invention;

[0025] Figure 5 This is a schematic diagram of the closed arc plate structure of the present invention;

[0026] Figure 6 This is an exploded schematic diagram of the closed positioning assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the rear view structure of the threaded slide of the present invention;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the ejection slider and the ejection rod of the present invention;

[0029] Fig. 9It is a schematic diagram of a partial three-dimensional structure of the threaded slide and the L-shaped supporting member of the present invention;

[0030] Fig.10 It is a schematic cross-sectional view of the L-shaped supporting member of the present invention;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the anti-slip component of the present invention.

[0032] In the figure: 1. workbench; 2. grabbing manipulator; 3. injection mechanism; 4. conveying box; 5. conveying mechanism; 51. driving motor; 52. threaded rod; 53. threaded slide; 54. left electromagnetic suction plate; 55. injection mold; 56. right electromagnetic suction plate; 57. guide block; 6. closing component; 61. fixing plate; 62. T-shaped slider; 63. closing arc plate; 631. arc plate; 64. air guide tube; 65. piston cylinder; 66. piston plate; 67. piston rod; 68. small motor; 69. transmission screw; 610. threaded plate; 611. ejector slider; 612. ejector rod; 613. convergence cover ;7. Positioning assembly;71. Transmission cavity;72. Square slider;73. Positioning arc plate;74. Reset spring;75. Guide arc rod;76. Insert rod;77. Guide spring;8. Buffer assembly;81. Circular cavity;82. Threaded slide groove;83. Transmission rod;84. Transmission ball;85. Threaded slide plate;86. Connecting spring;9. Anti-slip assembly;91. Circular rod;92. L-shaped supporting member;93. Volute spring;94. Contraction cavity;95. Tooth plate;96. Contact plate;97. Ejector spring;98. Gear;99. Articulated rod;910. Fixed rod;911. Limiting plate;912. Coil spring. DETAILED DESCRIPTION

[0033] like Figure 1-Figure 11 As shown, the present invention provides a technical solution: an injection molding machine capable of rapid mold reversal, comprising a workbench 1, a grabbing manipulator 2 is arranged on the side of the upper surface of the workbench 1, an injection mechanism 3 is fixedly installed on the upper surface of the workbench 1, a conveying box 4 is fixedly installed on the upper surface of the workbench 1, a conveying mechanism 5 capable of mold docking and transfer is arranged inside the conveying box 4, a threaded slide 53 is slidably installed on the bottom inner wall of the conveying box 4, a right electromagnetic suction plate 56 is slidably installed on the bottom inner wall of the conveying box 4, a closing component 6 capable of reducing heat loss of the mold gate during the injection molding operation is arranged inside the conveying box 4, and the closing component 6 comprises a fixed plate 61, a T-shaped slider 62, a closed arc plate 63, an arc plate 631, an air guide tube 64, a piston cylinder 65, a piston plate 66, a piston rod 67, a small motor 68, a transmission screw 69, a threaded plate 610, an ejection slider 611, an ejection rod 612 and a gathering cover 613.

[0034] In one embodiment of the present invention, a fixed plate 61 is fixedly mounted on the inner wall of the conveying box 4, a T-shaped slider 62 is slidably mounted on the inner wall of the fixed plate 61 away from the injection mechanism 3, a closed arc plate 63 is fixedly mounted on the end of the T-shaped slider 62, an arc plate 631 is fixedly mounted on the outer wall of one side of the closed arc plate 63, an air guide tube 64 is fixedly connected to the outer wall of the fixed plate 61 away from the closed arc plate 63, a piston cylinder 65 is fixedly mounted on the side wall of the fixed plate 61, and the inner wall of the piston cylinder 65 slides A piston plate 66 is installed, and a piston rod 67 is fixedly connected to the side wall of the piston plate 66. A small motor 68 is fixedly installed on the upper surface of the threaded slide 53. A transmission screw 69 is fixedly installed on the output end of the small motor 68. A threaded plate 610 is threadedly connected to the outer wall of the transmission screw 69. An ejection slider 611 is fixedly connected to the side wall of the threaded plate 610. An ejection rod 612 is arranged inside the ejection slider 611. A focusing cover 613 is fixedly installed on the outer wall of the right electromagnetic suction plate 56 close to the fixed plate 61.

[0035] Please refer to the instruction manual Figure 3-Figure 5 as well as Figure 7-Figure 9 In the embodiment of the present invention, the inner wall of the fixed plate 61 is provided with a hole that matches the size of the injection port of the injection mechanism 3, so that the injection port of the injection mechanism 3 extends from the outside of the conveying box 4 and passes through the fixed plate 61, and when the assembly is completed, the injection port of the injection mechanism 3 is on the left side of the fixed plate 61, so as to facilitate docking with the mold. At the same time, a T-shaped slide groove that matches the size of the T-shaped slider 62 is provided on the side wall of the fixed plate 61, so that the T-shaped slider 62 drives the closed arc plate 63 to slide linearly only along the side wall of the fixed plate 61. In addition, the number of the T-shaped slider 62 and the closed arc plate 63 is set There are four groups, and the four groups of T-shaped sliders 62 and closed arc plates 63 are evenly distributed in a circular array outside the holes opened inside the fixed plate 61. Furthermore, the inner wall of the fixed plate 61 is provided with air holes adapted to the air guide tube 64, and the air holes are arranged corresponding to the ends of the air guide tube 64. At the same time, the arc plate 631 is arranged on one side of the closed arc plate 63, and the other side of the closed arc plate 63 is provided with an arc groove adapted to the arc plate 631, so that when the four groups of closed arc plates 63 are tightened, the arc plate 631 is tightly attached to the arc groove, so that the four groups of closed arc plates 63 form a complete cylindrical structure.

[0036] Specifically, the connection between the air guide tube 64 and the piston cylinder 65 is arranged on the side of the piston plate 66 close to the fixed plate 61, so that the piston plate 66 will perform a suction action through the piston cylinder 65 and the air guide tube 64 during the movement of the piston plate 66 away from the fixed plate 61. At the same time, the transmission screw 69 and the threaded slide 53 are arranged horizontally, and the threaded plate 610 is slidably connected to the upper surface of the threaded slide 53. Further, the ejection slider 611 is slidably connected to the upper surface of the threaded slide 53, so that when the small motor 68 is started, the transmission screw 69 rotates, so that the threaded plate 610 can only drive the ejection slider 611 to slide linearly along the upper surface of the threaded slide 53, and will not rotate with the rotation of the transmission screw 69. At the same time, the ejection rod 612 includes a cylindrical section and a square column section. The cylindrical section is arranged near the ejection slider 611. At one end, a square column section is arranged on the side close to the fixed plate 61. Specifically, a square groove matched with the square column section is opened on the inner wall of one end of the piston rod 67 close to the ejector rod 612, so that the ejector rod 612 will enter the square groove when it is close to the piston rod 67. In addition, the convergence cover 613 includes a large diameter end and a small diameter end, and the large diameter end is arranged close to one end of the closed arc plate 63. In the process of the right electromagnetic suction plate 56 moving close to the fixed plate 61, the large diameter end of the convergence cover 613 contacts the end of the closed arc plate 63, and relying on the inclined surface inside the convergence cover 613, the four groups of closed arc plates 63 are tightened toward the injection port side close to the injection mechanism 3, and finally a cylindrical space is formed on the outside of the injection port, and because the two ends of the cylindrical space are closed by the fixed plate 61 and the side walls of the right electromagnetic suction plate 56, the outside of the injection port is protected.

[0037] When the end of the convergence cover 613 is tightly against the side wall of the fixed plate 61, the small motor 68 is started at this time, so that the transmission screw 69 drives the threaded plate 610 to slide along the upper surface of the threaded slide 53 until the ejector rod 612 squeezes the piston rod 67, so as to prompt the piston plate 66 to squeeze the inside of the piston cylinder 65, thereby cooperating with the air guide tube 64 to evacuate the area surrounded by the closed arc plate 63 to make the space tend to a vacuum state, which can not only improve the stability of the four groups of closed arc plates 63 arranged around the outside of the injection port of the injection mechanism 3, but also have a good insulation effect on the near-vacuum area near the injection structure of the injection mechanism 3, reduce the heat loss of the injection port, and ensure the injection molding effect of the device and the production quality of the plastic product.

[0038] In addition, please refer to the instructions attached Figure 1-Figure 3 as well as Figure 7The conveying mechanism 5 includes a driving motor 51, a threaded rod 52, a threaded slide 53, a left electromagnetic suction plate 54, an injection mold 55, a right electromagnetic suction plate 56 and a guide block 57. The driving motor 51 is fixedly mounted on the outer wall of the conveying box 4 away from the injection mechanism 3. The output end of the driving motor 51 is fixedly mounted with a threaded rod 52, the outer wall of the threaded rod 52 is threadedly connected with a threaded slide 53, the end of the threaded slide 53 close to the driving motor 51 is fixedly mounted with a left electromagnetic suction plate 54, the side of the left electromagnetic suction plate 54 is provided with an injection mold 55, the inner wall of the conveying box 4 is slidably mounted with a right electromagnetic suction plate 56, and the side wall of the right electromagnetic suction plate 56 is fixedly mounted with a guide block 57.

[0039] In the embodiment of the present invention, the inner walls of the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 are provided with through holes whose diameter is larger than the outer diameter of the threaded rod 52, so that the rotation of the threaded rod 52 will not cause motion interference to the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56. At the same time, a controller and a power supply device are provided inside the conveying box 4, and the controller is electrically connected to the left electromagnetic suction plate 54, the right electromagnetic suction plate 56 and the power supply device, so that the controller can control the power on and off of the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 according to the actual injection molding process requirements. When the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 are powered on, the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 are powered on. The magnetic suction plate 56 has suction force on the injection mold 55 between the two to limit the stable transportation of the injection mold 55 in the conveying box 4. Furthermore, there are two groups of guide blocks 57, and the two groups of guide blocks 57 are mirror-imaged on the left and right sides of the right electromagnetic suction plate 56. At the same time, guide grooves matching the size of the guide blocks 57 are opened on the inner walls of the left and right sides of the conveying box 4, and the guide blocks 57 are arranged inside the guide grooves, so that the right electromagnetic suction plate 56 can only slide along the inner wall of the conveying box 4, and will separate from the injection mold 55 after moving a certain distance to the left, so as to facilitate the replacement of the injection mold 55, thereby realizing the reverse molding operation.

[0040] Please refer to the instruction manual Figure 5-Figure 6 In the embodiment of the present invention, a positioning assembly 7 is provided inside the closed arc plate 63 to ensure the connection stability of the closed arc plate 63. The positioning assembly 7 includes a transmission cavity 71. The transmission cavity 71 is opened inside the closed arc plate 63. A square slider 72 is slidably installed on the inner wall of the transmission cavity 71. The end of the square slider 72 away from the closed arc plate 63 is fixedly installed with the positioning arc plate 73. A reset spring 74 is fixedly connected between the top of the square slider 72 and the top inner wall of the transmission cavity 71. A guide arc rod 75 is slidably installed on the inner wall of the transmission cavity 71. The guide arc rod 75 is arranged in an arc-shaped T-shape, and an insert rod 76 is fixedly installed at the end of the guide arc rod 75. Guide springs 77 are fixedly connected at both ends of the guide arc rod 75.

[0041] In the embodiment of the present invention, the transmission cavity 71 includes a vertical cavity and an arc cavity, the arc cavity is adapted to the guide arc rod 75, and the lower surface of the guide arc rod 75 near the center of the closed arc plate 63 is set to be arc-shaped, and an arc block is set at the top of the square slider 72. When the positioning arc plate 73 contacts the outer surface of the gate of the injection mold 55, as the closed arc plate 63 is tightened, the square slider 72 is pushed along the inner wall of the vertical cavity to approach the guide arc rod 75, and the arc block contacts the bottom arc surface of the guide arc rod 75, and squeezes the guide arc rod 75, so as to cause the guide arc rod 75 to move along the inside of the arc cavity toward the side away from the center of the closed arc plate 63. Specifically, The number of the insertion rods 76 is set to be multiple groups, and the multiple groups of insertion rods 76 are evenly distributed in a linear array at the end of the guiding arc rod 75 away from the curved surface, and the inner wall of the closed arc plate 63 at the end away from the guiding arc rod 75 is provided with a socket compatible with the insertion rod 76. When the guiding arc rod 75 is squeezed and the insertion rod 76 is pushed outward, the insertion rod 76 on one side of the closed arc plate 63 will extend outward to the socket opened on the side of the closed arc plate 63 on the adjacent side, so that the four groups of closed arc plates 63 around the injection port can be more closely connected to each other to ensure that the space surrounded by the four groups of closed arc plates 63 can form a stable space on the outside of the injection port to ensure the safety of the injection port during the injection molding operation.

[0042] At the same time, the curvature of the positioning arc plate 73 is the same as that of the closed arc plate 63, and the lower surface of the closed arc plate 63 is provided with an arc-shaped receiving groove adapted to the positioning arc plate 73, so that when the positioning arc plate 73 shrinks into the interior of the arc-shaped receiving groove, it can ensure that the bottom of the closed arc plate 63 and the outer surface of the gate of the injection mold 55 can be pressed against each other to maintain a closer fit. In addition, there are two groups of return springs 74, and the two groups of return springs 74 are on the left and right sides of the vertical central axis of the square slider 72, so that in the initial state, the square slider 72 and the positioning arc plate 73 move downward with a tendency to disengage from the transmission cavity 71, and under the elastic force of the return spring 74, the closed arc plate 63 can maintain a closer fit when in contact with the gate of the injection mold 55.

[0043] Please refer to the instruction manual Figure 8 In the embodiment of the present invention, a buffer assembly 8 is provided inside the ejection slider 611, which can delay the extrusion contact transmission between the ejection rod 612 and the piston rod 67. The buffer assembly 8 includes a circular cavity 81. The ejection rod 612 is provided with a circular cavity 81. The inner surface of the circular cavity 81 is provided with a threaded groove 82. A transmission rod 83 is rotatably installed on the inner wall of the end of the ejection slider 611 away from the ejection rod 612. A transmission ball 84 is fixedly installed on the arc-shaped outer wall of the transmission rod 83. A threaded slide plate 85 is slidably installed on the inner wall of the ejection slider 611. A connecting spring 86 is fixedly connected between the threaded slide plate 85 and the end of the ejection rod 612.

[0044] Specifically, the transmission rod 83 is adapted to the size of the circular cavity 81, and the transmission rod 83 is arranged inside the circular cavity 81; at the same time, the transmission ball 84 is arranged inside the threaded groove 82, and at the same time, the inner wall of the right electromagnetic suction plate 56 is provided with a square hole adapted to the square column section of the ejection rod 612, and the square column section is arranged inside the square hole, so that the ejection rod 612 can only slide in the horizontal direction without free rotation. Therefore, only relative sliding can occur between the ejection rod 612 and the transmission rod 83, thereby driving the transmission rod 83 to rotate under the guidance of the transmission ball 84 and the threaded groove 82. Furthermore, a threaded groove that can be threadedly connected to the threaded slide 85 is provided on the arc-shaped outer wall of the end of the transmission rod 83 close to the ejection slider 611, and at the same time, a rectangular groove adapted to the threaded slide 85 is provided on the inner wall of the ejection slider 611 to limit the threaded slide 85 to slide only in the horizontal direction.

[0045] When the small motor 68 is started and drives the transmission screw 69 to rotate, the ejection slider 611 is driven by the threaded plate 610 so that the ejection slider 611 slides along the upper surface of the threaded slide seat 53. At this time, the ejection slider 611 drives the ejection rod 612 to move to the right until the ejection rod 612 contacts the piston rod 67 and pushes the piston plate 66 to pump air in the piston cylinder 65. The piston rod 67 does not directly drive the piston plate 66 to start moving when the ejection rod 612 first contacts. In this process, the connection spring 86 in the ejection slider 611 is continuously driven by the small motor 68 and is compressed to a larger value due to the elastic force before pushing the ejection rod. 612 exerts a force on the piston rod 67. At this time, the four groups of closed arc plates 63 have formed a closed space outside the gate of the injection mold 55. At this time, the compression of the piston cylinder 65 by the piston plate 66 can evacuate the above-mentioned closed space through the air guide pipe 64, so that the closed space tends to be a vacuum. At the same time, through the relative rotation of the ejector rod 612 and the transmission rod 83, the threaded slide plate 85 is prompted to slide along the inside of the ejector slide block 611, and then the elastic force of the connecting spring 86 is prompted to always keep the state of pressing against the ejector rod 612, so as to avoid repeated shaking during the evacuation process, which in turn affects the gate protection effect of the closing component 6 on the injection mold 55.

[0046] Please refer to the instruction manual Figure 9-11In the embodiment of the present invention, the side wall of the threaded slide 53 is provided with an anti-slip component 9 that can support the bottom of the injection mold 55. The anti-slip component 9 includes a round rod 91. The side wall of the threaded slide 53 is fixedly installed with a connecting ear, and the connecting ear is rotatably connected to the end of the round rod 91. The round rod 91 passes through and is fixedly installed with an L-shaped supporting member 92. The arc-shaped outer wall of the end of the round rod 91 is sleeved with a volute spring 93. The upper surface of the L-shaped supporting member 92 is provided with a contraction cavity 94. The inner wall of the contraction cavity 94 slides A toothed plate 95 is installed, a contact plate 96 is fixedly installed on the top of the toothed plate 95, an ejection spring 97 is fixedly connected between the bottom end of the contact plate 96 and the bottom inner wall of the contraction cavity 94, a gear 98 is rotatably installed on the inner wall of the contraction cavity 94, a hinged rod 99 is fixedly connected at the axis of the gear 98, a fixed rod 910 is fixedly installed on the end of the hinged rod 99 away from the gear 98, a limiting plate 911 is rotatably installed on the end of the fixed rod 910, and a coil spring 912 is sleeved on the arc-shaped outer wall of the fixed rod 910.

[0047] Specifically, there are two groups of hinged ears, and the two groups of hinged ears are mirror-imaged and arranged on the left and right sides of the vertical center axis of the threaded slide 53. At the same time, a circular groove with a diameter larger than the outer diameter of the scroll spring 93 is opened on the inner wall of the hinged ear on the side of the vertical center axis of the threaded slide 53, and the two ends of the scroll spring 93 are respectively fixedly connected to the bottom inner wall of the circular groove and the arc-shaped outer wall of the round rod 91, so that the round rod 91 always has a movement tendency of reverse rotation and reset when rotating, and in the initial state, under the influence of the scroll spring 93, the L-shaped supporting member 92 has a tendency to deflect toward the inner wall of the bottom end of the conveying box 4, and the grasping robot 2 grasps the injection mold 55 toward the inside of the conveying box 4. During feeding, the side walls of the injection mold 55 will contact the side walls of the L-shaped supporting member 92, thereby causing the L-shaped supporting member 92 to deflect with the round rod 91 as the rotation center. Finally, the side walls and bottom outer walls of the L-shaped supporting member 92 are in contact with the injection mold 55. Furthermore, the upper surface of the L-shaped supporting member 92 is provided with a groove that is adapted to the size of the contact plate 96 and the limiting plate 911, so that the contact plate 96 and the limiting plate 911 can remain flush with the lower surface of the injection mold 55. At the same time, the tooth plate 95 is meshed with the gear 98. After the top of the contact plate 96 contacts the lower surface of the injection mold 55, the contact plate 96 will move downward along the inner wall of the tooth plate 95, thereby driving the gear 98 to rotate.

[0048] Furthermore, there are two groups of hinged rods 99, and the two groups of hinged rods 99 are mirror-imaged on the left and right sides of the gear 98. At the same time, the two ends of the coil spring 912 are fixedly connected to the top inner wall of the hinged rod 99 and the arc-shaped outer wall of the fixed rod 910 respectively. In the process that the L-shaped supporting member 92 contacts the injection mold 55 and deflects toward the side of the threaded slide 53, the bottom of the injection mold 55 contacts the top of the contact plate 96 and squeezes toward the inside of the contraction cavity 94. At this time, the gear 98 is transmitted by the tooth plate 95, so that the hinged rod 99 drives the limiting plate 911 to move upward so as to be tightly attached to the bottom surface of the injection mold 55. The coil spring 912 is set so that the limiting plate 911 always has a driving force toward the side of the threaded slide 53, thereby ensuring the fit between the injection mold 55 and the L-shaped supporting member 92, and ensuring that the L-shaped supporting member 92 can provide stable support for the injection mold 55 at the bottom to ensure safety during the injection molding process.

[0049] In the present invention, when in use, the grasping robot 2 grasps the injection mold 55 and puts it into the conveying box 4 until the injection mold 55 moves to the top of the L-shaped supporting member 92, and the side wall and bottom surface of the L-shaped supporting member 92 are tightly attached to the surface of the injection mold 55 through the movement of the injection mold 55. At this time, the power supply device is started by the controller in the conveying box 4, and then the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 are energized, so that the left electromagnetic suction plate 54 and the right electromagnetic suction plate 56 have magnetism, so that the left electromagnetic suction plate 54 can adsorb and grasp one end of the injection mold 55, and cooperate with the L-shaped supporting member 92 to ensure the relative stability of the injection mold 55, and then the drive motor 51 is started to cooperate with the threaded rod 52 to make the threaded rod 52 The threaded slide 53 drives the left electromagnetic suction plate 54, the L-shaped supporting member 92 and the injection mold 55 to move toward the injection mechanism 3 until the injection mold 55 moves away from the left electromagnetic suction plate 54 and is pressed against the outer wall of the right electromagnetic suction plate 56, so that the left electromagnetic suction plate 54, the threaded slide 53, the L-shaped supporting member 92, the injection mold 55 and the right electromagnetic suction plate 56 form a whole and are conveyed to the right along the inner wall of the conveying box 4 until the convergence cover 613 contacts the closed arc plate 63 and shrinks the four groups of closed arc plates 63 toward the center. Finally, after the gate of the injection mold 55 is connected to the injection port of the injection mechanism 3, the closed space formed by the four groups of closed arc plates 63 provides external protection for the gate of the injection mold 55 and the injection port of the injection mechanism 3.

[0050] At this time, when the small motor 68 is started to drive the transmission screw 69 to rotate, the threaded plate 610 is driven to make the ejection slider 611 slide along the upper surface of the threaded slide seat 53. At this time, the ejection slider 611 drives the ejection rod 612 to move to the right until the ejection rod 612 contacts the piston rod 67 and pushes the piston plate 66 to pump air in the piston cylinder 65. The piston rod 67 does not directly drive the piston plate 66 to start moving when the ejection rod 612 just starts to contact. In this process, the connection spring 86 in the ejection slider 611 is continuously driven by the small motor 68 and is compressed to a larger position due to the elastic force. The ejector rod 612 will be pushed to exert force on the piston rod 67 only when the pressure value is reached. At this time, the four groups of closed arc plates 63 have formed a closed space outside the gate of the injection mold 55. At this time, the compression of the piston cylinder 65 by the piston plate 66 can evacuate the above-mentioned closed space through the air guide pipe 64 to make the closed space tend to be a vacuum, which can not only improve the stability of the four groups of closed arc plates 63 arranged around the outside of the injection port of the injection mechanism 3, but also have a good insulation effect on the vacuum zone near the injection structure of the injection mechanism 3, reduce the heat loss of the injection port, and ensure the injection effect of the device and the production quality of the plastic product.

[0051] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An injection molding machine capable of rapid mold reversal, comprising a workbench (1), a grabbing manipulator (2) is arranged on the side of the upper surface of the workbench (1), an injection mechanism (3) is fixedly mounted on the upper surface of the workbench (1), and a conveying box (4) is fixedly mounted on the upper surface of the workbench (1), characterized in that: The conveying box (4) is provided with a conveying mechanism (5) capable of performing mold docking transfer, a threaded slide (53) is slidably mounted on the bottom inner wall of the conveying box (4), a right electromagnetic suction plate (56) is slidably mounted on the bottom inner wall of the conveying box (4), and a sealing component (6) capable of reducing heat loss at the mold gate during the injection molding operation is provided inside the conveying box (4).

2. The rapid mold-reversing injection molding machine according to claim 1, characterized in that: The sealing component (6) comprises a fixing plate (61), the fixing plate (61) being fixedly mounted on the inner wall of the conveying box (4), a T-shaped slider (62) being slidably mounted on the inner wall of the fixing plate (61) away from the injection mechanism (3), a closing arc plate (63) being fixedly mounted on the end of the T-shaped slider (62), an arc plate (631) being fixedly mounted on the outer wall of one side of the closing arc plate (63), an air guide tube (64) being fixedly connected to the outer wall of the fixing plate (61) away from the closing arc plate (63), a piston cylinder (65) being fixedly mounted on the side wall of the fixing plate (61), and the inner wall of the piston cylinder (65) A piston plate (66) is installed on the wall slidingly, and a piston rod (67) is fixedly connected to the side wall of the piston plate (66), a small motor (68) is fixedly installed on the upper surface of the threaded slide seat (53), and a transmission screw (69) is fixedly installed on the output end of the small motor (68), and the outer wall of the transmission screw (69) is threadedly connected to a threaded plate (610), and the side wall of the threaded plate (610) is fixedly connected to an ejection slider (611), and an ejection rod (612) is arranged inside the ejection slider (611), and a focusing cover (613) is fixedly installed on the outer wall of the right electromagnetic suction plate (56) close to the fixed plate (61).

3. The rapid mold-reversing injection molding machine according to claim 2, characterized in that: A T-shaped sliding groove matching the size of the T-shaped sliding block (62) is provided on the side wall of the fixed plate (61); the number of the T-shaped sliding block (62) and the closed arc plate (63) is four, and the four groups of T-shaped sliding blocks (62) and the closed arc plates (63) are evenly distributed in a circular array outside the hole provided inside the fixed plate (61); an air hole matching the air guide tube (64) is provided on the inner wall of the fixed plate (61), and the air hole is provided corresponding to the end of the air guide tube (64); the arc plate (631) is provided on one side of the closed arc plate (63), and an arc groove matching the arc plate (631) is provided on the other side of the closed arc plate (63).

4. The rapid mold-reversing injection molding machine according to claim 2, characterized in that: The ejection rod (612) includes a cylindrical section and a square column section, the cylindrical section is arranged at one end close to the ejection slider (611), and the square column section is arranged at one side close to the fixed plate (61). The inner wall of one end of the piston rod (67) close to the ejection rod (612) is provided with a square groove matched with the square column section, and the focusing cover (613) includes a large diameter end and a small diameter end, and the large diameter end is arranged close to one end of the closed arc plate (63).

5. The rapid mold-reversing injection molding machine according to claim 1, characterized in that: The conveying mechanism (5) comprises a driving motor (51), the driving motor (51) being fixedly mounted on the outer wall of a conveying box (4) away from the injection mechanism (3), a threaded rod (52) being fixedly mounted on the output end of the driving motor (51), the outer wall of the threaded rod (52) being threadedly connected with a threaded slide seat (53), a left electromagnetic suction plate (54) being fixedly mounted on one end of the threaded slide seat (53) close to the driving motor (51), an injection mold (55) being arranged on the side of the left electromagnetic suction plate (54), a right electromagnetic suction plate (56) being slidably mounted on the inner wall of the conveying box (4), and a guide block (57) being fixedly mounted on the side wall of the right electromagnetic suction plate (56).

6. The rapid mold-reversing injection molding machine according to claim 5, characterized in that: The inner walls of the left electromagnetic suction plate (54) and the right electromagnetic suction plate (56) are provided with through holes with a diameter larger than the outer diameter of the threaded rod (52); a controller and a power supply device are arranged inside the conveying box (4); and the controller is electrically connected to the left electromagnetic suction plate (54), the right electromagnetic suction plate (56) and the power supply device.

7. The rapid mold-reversing injection molding machine according to claim 2, characterized in that: A positioning assembly (7) is arranged inside the closed arc plate (63) to ensure the connection stability of the closed arc plate (63). The positioning assembly (7) includes a transmission cavity (71). The transmission cavity (71) is arranged inside the closed arc plate (63). A square slider (72) is slidably mounted on the inner wall of the transmission cavity (71). The end of the square slider (72) away from the closed arc plate (63) is fixedly mounted with the positioning arc plate (73). A return spring (74) is fixedly connected between the top of the square slider (72) and the top inner wall of the transmission cavity (71). A guide arc rod (75) is slidably mounted on the inner wall of the transmission cavity (71). The guide arc rod (75) is arranged in a circular arc T shape, and an insertion rod (76) is fixedly mounted on the end of the guide arc rod (75). Both ends of the guide arc rod (75) are fixedly connected with guide springs (77).

8. The rapid mold-reversing injection molding machine according to claim 7, characterized in that: The transmission cavity (71) comprises a vertical cavity and an arc cavity, the arc cavity is adapted to the guide arc rod (75), and the lower surface of one side of the guide arc rod (75) close to the center of the closed arc plate (63) is arranged in an arc shape, and an arc block is arranged at the top end of the square slider (72).

9. The rapid mold-reversing injection molding machine according to claim 2, characterized in that: A buffer assembly (8) is arranged inside the ejection slider (611) and can delay the extrusion contact transmission between the ejection rod (612) and the piston rod (67). The buffer assembly (8) includes a circular cavity (81). A circular cavity (81) is provided inside the ejection rod (612). A threaded groove (82) is provided on the inner surface of the circular cavity (81). A transmission rod (83) is rotatably mounted on the inner wall of one end of the ejection slider (611) away from the ejection rod (612). A transmission ball (84) is fixedly mounted on the arc-shaped outer wall of the transmission rod (83). A threaded slide plate (85) is slidably mounted on the inner wall of the ejection slider (611). A connecting spring (86) is fixedly connected between the threaded slide plate (85) and the end of the ejection rod (612).

10. The rapid mold-reversing injection molding machine according to claim 5, characterized in that: The side wall of the threaded slide (53) is provided with an anti-slip assembly (9) capable of supporting the bottom of the injection mold (55), the anti-slip assembly (9) comprising a round rod (91), the side wall of the threaded slide (53) is fixedly provided with a connecting ear, the connecting ear is rotatably connected to the end of the round rod (91), the round rod (91) penetrates and is fixedly provided with an L-shaped supporting member (92), the arc-shaped outer wall of the end of the round rod (91) is sleeved with a volute spring (93), the upper surface of the L-shaped supporting member (92) is provided with a contraction cavity (94), the inner wall of the contraction cavity (94) is slidably provided with a toothed plate (95) ), a contact plate (96) is fixedly installed on the top of the tooth plate (95), an ejection spring (97) is fixedly connected between the bottom end of the contact plate (96) and the inner wall of the bottom end of the contraction chamber (94), a gear (98) is rotatably installed on the inner wall of the contraction chamber (94), a hinge rod (99) is fixedly connected at the axis of the gear (98), a fixed rod (910) is fixedly installed at one end of the hinge rod (99) away from the gear (98), a limiting plate (911) is rotatably installed at the end of the fixed rod (910), and a coil spring (912) is sleeved on the arc-shaped outer wall of the fixed rod (910).

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