A multi-station temperature-controlled injection molding machine

Abstract

The present invention relates to the field of plastic processing and production technology, specifically a multi-station temperature-controlled injection molding machine, including a frame bottom plate 1, a frame vertical plate 1, a frame vertical plate 2 and a frame vertical plate 3 are fixedly installed on the frame bottom plate; the tops of the upper frame vertical plate 1 and the frame vertical plate 3 are jointly fixedly installed with a frame bottom plate 2; a slide rail is fixedly installed on the frame bottom plate 2, a slider 1 is provided on the slide rail, and the top of the slider 1 is jointly fixedly installed with the frame bottom plate 3; a plurality of plastic injection gun fixing clips are fixedly installed on the frame bottom plate 3, the plastic injection gun fixing clips are jointly connected with a plastic injection gun, and a hopper is installed on the plastic injection gun. The present invention designs the mold into a multi-station turntable type, so that after injection molding at one station is completed, the workpiece can be rotated to the next station to continue injection molding without opening the mold to take out the workpiece when it is not formed, thereby solving the problem of a long waiting time for demolding after injection molding is completed and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing and production, in particular to a multi-station temperature-controlled injection molding machine. Background Art

[0002] The injection molding machine uses a plastic mold to make plastic products of various shapes from thermoplastic materials. The working principle of the injection molding machine is to use an injection gun to inject the material that has been heated and melted into the closed mold cavity, and then solidify and shape it to get the desired product. Injection molding is a cyclic process, including: adding materials - heating and melting materials - injecting materials into the mold cavity - cooling and molding after filling the mold - opening the mold to take out the parts.

[0003] Traditional injection molding machines need to wait for the molten material to cool and form before they can open the mold to unload the material after injection. When the mold is cooled and formed after filling, the demolding process takes a long time, resulting in low production efficiency.

[0004] Therefore, a multi-station temperature-controlled injection molding machine is proposed. Summary of the invention

[0005] The object of the present invention is to provide a multi-station temperature-controlled injection molding machine, which solves the problems raised in the above-mentioned background technology by designing the mold of the injection molding machine into a multi-station one.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-station temperature-controlled injection molding machine, comprising:

[0008] A rack bottom plate 1, on which a rack vertical plate 1, a rack vertical plate 2 and a rack vertical plate 3 are fixedly mounted;

[0009] The rack bottom plate 2 is fixedly mounted on the tops of the upper rack vertical plate 1 and the rack vertical plate 3;

[0010] A rack bottom plate three, wherein a slide rail is fixedly mounted on the rack bottom plate two, two of the slide rails are provided with slide blocks one, and the top ends of the plurality of slide blocks one are fixedly mounted on the rack bottom plate three;

[0011] An injection plastic gun, a plurality of injection plastic gun fixing clips are fixedly installed on the frame bottom plate three, the injection plastic gun fixing clips are commonly connected to the injection plastic gun, a hopper is installed on the injection plastic gun, a motor 2 mounting plate is fixedly installed on one end of the injection plastic gun, a motor 2 is fixedly installed on the motor 2 mounting plate, a screw is fixedly installed on the output end of the motor 2, and the screw is located in the injection plastic gun, and a heating device is installed on the injection plastic gun;

[0012] A mold installation turntable, a rotating shaft is rotatably installed between the frame vertical plate 1 and the frame vertical plate 2, a mold installation turntable is fixedly installed on the rotating shaft, and a plurality of molds that cooperate with the plastic injection gun are installed in the mold installation turntable;

[0013] A lateral moving device, wherein the frame bottom plate 3 is provided with a lateral moving device which drives the plastic injection gun to be intermittently connected to the corresponding mold;

[0014] Motor 1, the frame vertical plate 1 is fixedly mounted with motor 1, and the mold mounting turntable and the lateral moving device are both driven by motor 1.

[0015] Preferably, pulleys are fixedly mounted on the output end of the motor 1 and the outer side wall of the rotating shaft, and a belt is commonly mounted on the two pulleys. The lateral moving device includes a reciprocating screw fixedly connected to one end of the rotating shaft, a large gear is fixedly mounted on the end of the rotating shaft close to the frame vertical plate 1, and a small gear meshing with the large gear is fixedly mounted on the end of the reciprocating screw close to the frame vertical plate 1, a slider 2 is fixedly mounted on the lower part of the frame bottom plate 3, the reciprocating screw penetrates the slider 2, and the reciprocating screw cooperates with the slider 2, and a plurality of connecting grooves that cooperate with the plastic injection gun are evenly opened on the outer wall of the mold mounting turntable close to the plastic injection gun, and the connecting grooves correspond to the molds one by one.

[0016] Preferably, the thread pitch of the reciprocating screw is not less than 0.35 mm.

[0017] Preferably, each of the molds is provided with a through hole connected to the connecting groove, and the through holes cooperate with the plastic injection gun. The inner side wall of each connecting groove is elastically connected with a plurality of blocks for sealing the through holes through a spring, and the side walls of the blocks close to the plastic injection gun are all inclined.

[0018] Preferably, a cooling water pipe is fixedly installed inside the mold mounting turntable, and the cooling water pipe is wound around the outside of the mold, both ends of the cooling water pipe extend through the axis of the rotating shaft to the outside of the mold mounting turntable and the rotating shaft, and a circulating water cooling device is connected to the cooling water pipe.

[0019] Preferably, a plurality of molding cavities are evenly opened on the outer side wall of the mold mounting turntable away from the plastic injection gun, a movable mold fixing plate is fixedly installed on the outer side wall of the rotating shaft close to the second side of the frame vertical plate, a plurality of movable molds cooperating with the molding cavities are evenly and movably installed on the movable mold fixing plate, and the movable molds correspond to the molding cavities one by one, and each of the movable molds is connected to a control mechanism that automatically controls the movement of the movable mold.

[0020] Preferably, the control mechanism includes a hydraulic cylinder fixedly mounted on a movable mold fixing plate, and the output end of the hydraulic cylinder is fixedly connected to the movable mold, a plurality of conductive heads are evenly and fixedly mounted on the outer ring of the mold mounting turntable, and the conductive heads correspond one-to-one to the molding cavities, and two connectors electrically connected to the hydraulic cylinder are symmetrically mounted on the frame vertical plate, and the conductive heads cooperate with the two connectors.

[0021] Preferably, a positioning device that cooperates with the mold mounting turntable is provided on the frame upright plate 1, and the positioning device includes a positioning block fixedly installed on the frame upright plate 1, and a clamping block 2 that cooperates with the mold mounting turntable is elastically connected to the positioning block through a spring 2, and a magnet 1 is fixedly installed on the end of the clamping block 2 away from the mold mounting turntable, and an electromagnet 1 that attracts the magnet 1 and the clamping block 2 away from the mold mounting turntable is fixedly installed in the positioning block, and the electromagnet 1 is electrically connected to a motor 1, and a plurality of clamping grooves 1 that cooperate with the clamping block 2 are evenly opened on the mold mounting turntable, and the clamping grooves 1 correspond one to the molds one by one.

[0022] Preferably, each of the movable molds is movably provided with an ejector pin, a spring four is evenly wound around the outer wall of the ejector pin, and both ends of the spring four are respectively fixedly connected to the movable mold and the ejector pin, and a protrusion that cooperates with the ejector pin is fixedly installed on each of the movable mold fixing plates.

[0023] Preferably, a piston rod is provided at the output end of the hydraulic cylinder, and a fixed block is fixedly installed at one end of the hydraulic cylinder close to the piston rod, and two clamping blocks three that cooperate with the piston rod are elastically connected to the fixed block through a spring three, and magnets two are fixedly installed at one end of the two clamping blocks three away from the piston rod, and two slots two that cooperate with the clamping blocks three are symmetrically provided on the piston rod, and two electromagnets two that attract the magnets two and the clamping blocks three away from the slots two are symmetrically installed in the fixed block, and the two electromagnets two are electrically connected to the hydraulic cylinder.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Compared with the traditional technical solutions, the multi-station temperature-controlled injection molding machine described in the present invention designs the mold into a multi-station turntable type. After the injection molding is completed at one station, the workpiece can be rotated to the next station to continue injection molding without opening the mold to take out the workpiece when it is not formed. This solves the problem of long waiting time for demolding after injection molding is completed, and improves production efficiency.

[0026] 2. Compared with the traditional technical solutions, the multi-station temperature-controlled injection molding machine described in the present invention has a spring and a block on the mold mounting turntable to prevent the workpiece from not being formed due to insufficient pressure in the mold cavity when the injection gun is retracted when the mold rotates after the injection molding is completed.

[0027] 3. Compared with the traditional technical solutions, the multi-station temperature-controlled injection molding machine described in the present invention has a reciprocating screw installed under the injection molding gun, which can drive the injection molding gun to reciprocate and cooperate with the mold without changing the rotation direction of the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a front view of the present invention;

[0030] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;

[0031] Figure 4 It is a partial structural schematic diagram of the present invention;

[0032] Figure 5 It is a partial structural cross-sectional view of the present invention;

[0033] Figure 6 For the present invention Figure 5 A partial enlarged view of point E in the middle;

[0034] Figure 7 For the present invention Figure 5 A partial enlarged view of point D in the middle;

[0035] Figure 8 For the present invention Figure 5 A partial enlarged view of point C in the middle;

[0036] Fig. 9 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0037] Fig.10 For the present invention Figure 8 A partial enlarged view of point F in the middle;

[0038] Fig.11 It is a schematic diagram of the meshing mode between the large gear and the small gear of the present invention.

[0039] In the figure: 1, frame bottom plate 1; 2, slide rail; 3, slider 1; 4, motor 1; 5, frame vertical plate 1; 6, joint; 7, frame vertical plate 2; 8, rotating shaft; 9, hydraulic cylinder; 10, movable mold; 11, large gear; 12, mold mounting turntable; 13, reciprocating screw; 14, plastic injection gun; 15, hopper; 16, motor 2 mounting plate; 17, motor 2; 18, plastic injection gun fixing clamp; 19, frame bottom plate 3; 20, frame bottom plate 2; 21, frame vertical plate 3; 22, belt; 23, small gear; 24. Bump; 25. Moving mold fixing plate; 26. Screw; 27. Spring 1; 28. Block 1; 29. ​​Ejector; 30. Spring 4; 31. Heating device; 32. Pulley; 33. Positioning block; 34. Electromagnet 1; 35. Spring 2; 36. Magnet 1; 37. Block 2; 38. Slot 1; 39. Fixing block; 40. Electromagnet 2; 41. Spring 3; 42. Magnet 2; 43. Block 3; 44. Water pipe; 45. Slider 2; 46. Connecting groove; 47. Slot 2; 48. Through hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] See also Figures 1 to 11 The present invention provides a multi-station temperature-controlled injection molding machine, and the technical solution is as follows:

[0044] A multi-station temperature-controlled injection molding machine, comprising:

[0045] A rack bottom plate 1, on which a rack vertical plate 1 5, a rack vertical plate 2 7 and a rack vertical plate 3 21 are fixedly installed;

[0046] The rack bottom plate 20, the top of the upper rack vertical plate 1 5 and the rack vertical plate 3 21 are fixedly mounted on the rack bottom plate 20;

[0047] The rack bottom plate 3 19, the rack bottom plate 2 20 is fixedly mounted with a slide rail 2, two slide rails 2 are provided with a slider 1 3, and the tops of the multiple sliders 1 3 are fixedly mounted on the rack bottom plate 3 19;

[0048] Plastic injection gun 14, a plurality of plastic injection gun fixing clips 18 are fixedly mounted on the frame bottom plate 3 19, the plastic injection gun fixing clips 18 are commonly connected to the plastic injection gun 14, a hopper 15 is mounted on the plastic injection gun 14, a motor 2 mounting plate 16 is fixedly mounted on one end of the plastic injection gun 14, a motor 2 17 is fixedly mounted on the motor 2 mounting plate 16, a screw 26 is fixedly mounted on the output end of the motor 2 17, and the screw 26 is located in the plastic injection gun 14, and a heating device 31 is mounted on the plastic injection gun 14;

[0049] A mold installation turntable 12 is rotatably installed between the frame vertical plate 1 5 and the frame vertical plate 2 7. A mold installation turntable 12 is fixedly installed on the rotation shaft 8. A plurality of molds that cooperate with the plastic injection gun 14 are installed in the mold installation turntable 12.

[0050] A lateral moving device is installed on the frame bottom plate 3 19 to drive the plastic injection gun 14 to be intermittently connected to the lateral moving device on the corresponding mold;

[0051] Motor 14: A motor 14 is fixedly mounted on the frame vertical plate 15, and the mold mounting turntable 12 and the horizontal moving device are both driven by the motor 14.

[0052] During operation, the heating device 31 is started to add materials to the hopper 15, and the motor 2 17 drives the screw 26 to rotate to evenly transport the materials to the end of the plastic injection gun 14 close to the mold mounting turntable 12, and the output shaft of the motor 14 drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the mold mounting turntable 12 to rotate, and at the same time drives the lateral moving device to move the plastic injection gun 14 toward the mold mounting turntable 12. After the end of the plastic injection gun 14 close to the mold mounting turntable 12 cooperates with the mold on the mold mounting turntable 12, the motor 14 stops, and the motor 2 17 rotates to drive the screw 26 to inject the materials into the mold cavity; after the injection molding is completed, the motor 2 17 stops, and the motor 14 starts to drive the mold mounting turntable 12, and at the same time drives the lateral device to move the plastic injection gun 14 away from the mold mounting turntable 12. After the injection molding is completed at one station, the workpiece can be rotated to the next station to continue the injection molding without opening the mold to take out the workpiece when the workpiece is not formed, which solves the problem of a long waiting time for demolding after the injection molding is completed, thereby improving the production efficiency.

[0053] As an embodiment of the present invention, refer to Figure 1 , Figure 2 and Fig.11 , pulleys 32 are fixedly installed on the output end of the motor 4 and the outer side wall of the rotating shaft 8, and a belt 22 is installed on the two pulleys 32. The lateral moving device includes a reciprocating screw 13 fixedly connected to one end of the rotating shaft 8, and a large gear 11 is fixedly installed on the end of the rotating shaft 8 close to the frame vertical plate 5, and a small gear 23 meshing with the large gear 11 is fixedly installed on the end of the reciprocating screw 13 close to the frame vertical plate 5, and a slider 2 45 is fixedly installed at the lower part of the frame bottom plate 3 19, and the reciprocating screw 13 penetrates the slider 2 45, and the reciprocating screw 13 cooperates with the slider 2 45. A plurality of connecting grooves 46 that cooperate with the plastic injection gun 14 are evenly opened on the outer wall of the mold mounting turntable 12 close to the plastic injection gun 14, and the connecting grooves 46 correspond to the molds one by one.

[0054] When the motor 14 is started, the pulley 32, the belt 22 and the rotating shaft 8 can be driven to rotate. The rotation of the rotating shaft 8 can drive the large gear 11, the small gear 23 and the reciprocating screw 13 to rotate. The reciprocating screw 13 cooperates with the slider 2 45, so the rotation of the reciprocating screw 13 can drive the slider 2 45 and the plastic injection gun 14 to reciprocate in the horizontal direction. The ratio of the large gear 11 and the small gear 23 is determined according to the actual production situation, so that when the large gear 11 rotates an angle, the small gear 23 has rotated multiple circles, thereby driving the plastic injection gun 14 to move quickly, so that the adjacent molds on the mold mounting turntable 12 are rotated to the injection plastic gun 1 4 corresponding position, the plastic injection gun 14 just moves back and forth at the top of the reciprocating screw rod 13 and inserts one end of the plastic injection gun 14 into the corresponding mold, and a motor can be used to drive the plastic injection gun 14 to cooperate with the mold installation turntable 12. In order to achieve the cooperation between the plastic injection gun 14 and the mold installation turntable 12, the existing multi-station temperature-controlled injection molding machine generally needs to set two driving power supplies to drive them separately. In the present application, the plastic injection gun 14 and the mold installation turntable 12 can be achieved with the help of a motor, thereby significantly reducing the manufacturing cost and overall volume of the multi-station temperature-controlled injection molding machine.

[0055] As an embodiment of the present invention, refer to Figure 2 and Figure 5 , the thread pitch of the reciprocating screw 13 is not less than 0.35mm.

[0056] The thread pitch of the reciprocating screw 13 is not less than 0.35 mm. The thread pitch of the reciprocating screw 13 is adjusted according to the actual production situation to avoid the mold installation turntable 12 and the plastic injection gun 14 colliding when the mold installation turntable 12 rotates before and after injection molding.

[0057] As an embodiment of the present invention, refer to Figure 5 and Figure 7 Each mold is provided with a through hole 48 connected to the connecting groove 46, and the through holes 48 cooperate with the plastic injection gun 14. The inner side wall of each connecting groove 46 is elastically connected with a plurality of blocks 28 for sealing the through holes 48 through a spring 27, and the side walls of the blocks 28 close to the plastic injection gun 14 are all inclined.

[0058] The side wall of the block 28 close to the plastic injection gun 14 is set as an inclined surface. When the plastic injection gun 14 moves into the mold installation turntable 12, the inclined side of the block 28 is squeezed open by the plastic injection gun 14, and the plastic injection gun 14 is moved into the mold installation turntable 12 to the position corresponding to the connecting groove 46. After the injection molding is completed, the plastic injection gun 14 moves away from the mold installation turntable 12. When the plastic injection gun 14 leaves the position of the block 28, the block 28 is quickly fitted together by the elastic force of the spring 27 to block the connecting groove 46 to ensure the pressure in the mold cavity and prevent the reflux of the molten material, so that the produced workpiece is unqualified.

[0059] As an embodiment of the present invention, refer to Figure 5 and Fig. 9 A cooling water pipe 44 is fixedly installed in the mold mounting turntable 12, and the cooling water pipe 44 is wound around the outside of the mold. Both ends of the cooling water pipe 44 extend through the axis of the rotating shaft 8 to the outside of the mold mounting turntable 12 and the rotating shaft 8, and the cooling water pipe 44 is connected to a circulating water cooling device.

[0060] A cooling water pipe 44 is fixedly installed in the mold mounting turntable 12. A rotatable joint is used at the connection between the cooling water pipe 44 and the circulating water cooling device at the rotating shaft 8 so that the external water pipe will not be entangled when the mold mounting turntable 12 rotates. After the injection molding is completed, the cooling of the mold cavity can be accelerated, and the cooling and molding time of the workpiece can be reduced.

[0061] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 6 A plurality of molding cavities are evenly arranged on the outer side wall of the mold mounting turntable 12 away from the plastic injection gun 14, a movable mold fixing plate 25 is fixedly installed on the outer side wall of the rotating shaft 8 close to the frame vertical plate 27, and a plurality of movable molds 10 cooperating with the molding cavities are evenly and movably installed on the movable mold fixing plate 25, and the movable molds 10 correspond to the molding cavities one by one, and each movable mold 10 is connected to a control mechanism that automatically controls the movement of the movable mold 10.

[0062] An independent movable mold 10 is installed on the corresponding molding cavity, so that each station movable mold 10 cooperates with the mold cavity. Each movable mold 10 is provided with an independent control unit. After the injection molding of the workpiece is completed, the mold mounting turntable 12 rotates to a certain position, and the corresponding mold movable mold 10 automatically opens and unloads the mold. There is no need for manual operation to open and unload the mold, which reduces the operation intensity of the workers.

[0063] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 6The control mechanism includes a hydraulic cylinder 9 fixedly mounted on a movable mold fixing plate 25, and the output end of the hydraulic cylinder 9 is fixedly connected to the movable mold 10. A plurality of conductive heads are evenly and fixedly mounted on the outer ring of the mold mounting turntable 12, and the conductive heads correspond to the molding cavities one by one. Two connectors 6 electrically connected to the hydraulic cylinder 9 are symmetrically mounted on a frame vertical plate 5, and the conductive heads cooperate with the connectors 6.

[0064] The mold installation turntable 12 rotates, and after the conductive head of the outer ring of the mold installation turntable 12 contacts the connector 6, the motor 4 is powered off, and the conductive head connects the circuit that drives the hydraulic cylinder 9 to move. The hydraulic cylinder 9 contracts and drives the movable mold 10 away from the mold cavity. After the mold installation turntable 12 rotates to the corresponding position, there is no need to manually control the unloading action of each independent unit, so that automatic unloading is realized, reducing the operating intensity of workers.

[0065] As an embodiment of the present invention, refer to Figure 2 , Figure 5 and Figure 6 A positioning device that cooperates with the mold mounting turntable 12 is provided on the frame vertical plate 15, and the positioning device includes a positioning block 33 fixedly installed on the frame vertical plate 15, and a clamping block 2 37 that cooperates with the mold mounting turntable 12 is elastically connected to the positioning block 33 through a spring 2 35, and a magnet 36 is fixedly installed on the end of the clamping block 2 37 away from the mold mounting turntable 12, and an electromagnet 34 that attracts the magnet 1 36 and the clamping block 2 37 away from the mold mounting turntable 12 is fixedly installed in the positioning block 33, and the electromagnet 1 34 is electrically connected to the motor 1 4, and a plurality of clamping grooves 38 that cooperate with the clamping block 2 37 are evenly opened on the mold mounting turntable 12, and the clamping grooves 38 correspond to the molds one by one.

[0066] A positioning device that cooperates with the mold mounting turntable 12 is provided on the frame vertical plate 15. When the motor 14 drives the mold mounting turntable 12 to rotate, the coil of the electromagnet 134 is connected, and the magnetism generated by the electromagnet 134 is opposite to the magnetism of the end of the magnet 136 close to the electromagnet 134. After the electromagnet 134 is turned on and generates magnetism, it will attract the magnet 136 to drive the clamping block 237 away from the mold mounting turntable 12 and the clamping slot 138. After moving to a station, the motor 14 stops. After the electromagnet 134 loses its magnetism, the spring 235 will push the magnet 136 and the clamping block 237 to move toward the mold mounting turntable 12 due to the restoration of its own elastic force, and insert one end of the clamping block 237 into the corresponding clamping slot 138 on the mold mounting turntable 12. Therefore, the mold mounting turntable 12 can be fixed, thereby preventing the mold mounting turntable 12 from being offset due to inertia, resulting in inaccurate positioning of the injection molding gun 14 and the mold mounting turntable 12.

[0067] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 8A pin 29 is movably inserted on each movable mold 10, and one end of the pin 29 extends into the molding cavity. A spring four 30 is evenly wound around the outer wall of the pin 29, and the two ends of the spring four 30 are respectively fixedly connected to the movable mold 10 and the pin 29, and a protrusion 24 that cooperates with the pin 29 is fixedly installed on each movable mold fixing plate 25.

[0068] After the hydraulic cylinder 9 drives the movable mold 10 to retract to a certain distance, the end of the ejector 29 away from the mold cavity contacts the protrusion 24, and the movable mold 10 continues to move. The ejector 29 is supported by the protrusion 24, and the end of the ejector 29 away from the protrusion 24 ejects the workpiece to complete the unloading. There is no need to manually push the ejector 29 to unload the mold, which reduces the operating intensity of the workers.

[0069] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Fig.10 A piston rod is provided at the output end of the hydraulic cylinder 9, and a fixed block 39 is fixedly installed at one end of the hydraulic cylinder 9 close to the piston rod. Two clamping blocks 3 43 cooperating with the piston rod are symmetrically elastically connected to the fixed block 39 through a spring 3 41, and magnets 2 42 are fixedly installed at one end of the two clamping blocks 3 43 away from the piston rod. Two clamping grooves 2 47 cooperating with the clamping blocks 3 43 are symmetrically provided on the piston rod. Two electromagnets 2 40 that attract the magnets 2 42 and the clamping blocks 3 43 away from the clamping grooves 2 47 are symmetrically installed in the fixed block 39, and the two electromagnets 2 40 are electrically connected to the hydraulic cylinder 9.

[0070] When the hydraulic cylinder 9 is started, the electromagnets 2 40 are energized and attract the magnets 2 42 and the blocks 3 43 away from the slots 2 47. At this time, the piston rod can drive the movable mold 10 to move and fit the movable mold 10 with the mold cavity. After the movable mold 10 fits with the mold cavity, the hydraulic cylinder 9 is closed. At this time, the spring 3 41 will push one end of the block 3 43 into the corresponding slot 2 47 on the piston rod due to the restoration of its own elastic force, so that the movable mold 10 can be fixed tightly to one side of the mold cavity, thereby preventing the movable mold 10 from being pushed open due to excessive pressure in the mold cavity during injection molding.

[0071] Working principle: When working, start the heating device 31, add materials to the hopper 15, the motor 17 drives the screw 26 to rotate and evenly transport the materials to the plastic injection gun 14 close to the end of the mold installation turntable 12, the motor 4 drives the mold installation turntable 12 to rotate and drives the lateral moving device to move the plastic injection gun 14 toward the mold installation turntable 12. After the plastic injection gun 14 mouth and the connecting groove 46 on the mold installation turntable 12 cooperate with each other, the motor 4 stops, and the electromagnet 34 loses its magnetism. The spring 2 35 restores its own elastic force and pushes the magnet 1 36 and the clamping block 2 37 to move toward the mold installation turntable 12 and inserts one end of the clamping block 2 37 into the corresponding clamping groove 18 on the mold installation turntable 12, so that the mold installation turntable 12 can be fixed. When the hydraulic cylinder 9 is started, the electromagnet 2 40 is energized and attracts the magnet 2 42 and the clamping block 37. Block three 43 is away from the slot two 47. At this time, the piston rod can drive the movable mold 10 to move and fit the movable mold 10 with the mold cavity. After the movable mold 10 fits with the mold cavity, the hydraulic cylinder 9 is closed. At this time, the spring three 41 will push one end of the block three 43 to insert into the corresponding slot two 47 on the piston rod due to the restoration of its own elastic force, so that the movable mold 10 can be fixed tightly to one side of the mold cavity. At this time, the motor two 17 drives the screw 26 to inject the material into the mold cavity. After the injection molding is completed, the motor two 17 stops, and the motor one 4 starts to drive the mold mounting turntable 12 to rotate and at the same time drives the horizontal device to move the plastic injection gun 14 away from the mold mounting turntable 12. After the injection molding is completed at one station, the workpiece can be rotated to the next station to continue the injection molding without opening the mold to take out the workpiece when it is not formed. This solves the problem of a long waiting time for demolding after the injection molding is completed, and improves the production efficiency.

[0072] When unloading the mold, after the conductive head of the outer ring of the mold mounting turntable 12 contacts the connector 6, the motor 4 is powered off, and the conductive head is connected to the circuit driving the hydraulic cylinder 9. The hydraulic cylinder 9 contracts to drive the movable mold 10 away from the mold cavity. After the hydraulic cylinder 9 drives the movable mold 10 to contract backward to a certain distance, the end of the ejector pin 29 away from the mold cavity contacts the protrusion 24, and the movable mold 10 continues to move. The ejector pin 29 is supported by the protrusion 24, and the end of the ejector pin 29 away from the protrusion 24 ejects the workpiece to complete the unloading, and the mold can be unloaded without manually pushing the ejector pin 29.

[0073] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station temperature-controlled injection molding machine, characterized in that: include: A rack bottom plate (1), on which a rack vertical plate (5), a rack vertical plate (7) and a rack vertical plate (21) are fixedly mounted; a rack bottom plate (20), on which the top ends of the rack vertical plate (5) and the rack vertical plate (21) are fixedly mounted; a rack bottom plate (19), on which a slide rail (2) is fixedly mounted, and two slide rails (2) are provided with a slide block ( 3), the top ends of the plurality of sliders (3) are fixedly mounted on a frame bottom plate (19); a plastic injection gun (14), a plurality of plastic injection gun fixing clips (18) are fixedly mounted on the frame bottom plate (19), the plastic injection gun fixing clips (18) are commonly connected to a plastic injection gun (14), a hopper (15) is mounted on the plastic injection gun (14), one end of the plastic injection gun (14) is fixedly mounted with a motor second mounting plate (16), the A motor 2 (17) is fixedly mounted on the motor 2 mounting plate (16), a screw (26) is fixedly mounted on the output end of the motor 2 (17), and the screw (26) is located in the plastic injection gun (14), and a heating device (31) is mounted on the plastic injection gun (14); a mold mounting turntable (12), a rotating shaft (8) is rotatably mounted between the frame vertical plate 1 (5) and the frame vertical plate 2 (7), a mold mounting turntable (12) is fixedly mounted on the rotating shaft (8), and a plurality of molds that cooperate with the plastic injection gun (14) are mounted in the mold mounting turntable (12); a horizontal moving device, a horizontal moving device for driving the plastic injection gun (14) to be intermittently connected to the corresponding mold is mounted on the frame bottom plate 3 (19); a motor 1 (4), a motor 1 (4) is fixedly mounted on the frame vertical plate 1 (5), and the mold mounting turntable (12) and the horizontal moving device are both driven by the motor 1 (4); A pulley (32) is fixedly mounted on the output end of the motor (4) and the outer side wall of the rotating shaft (8), and a belt (22) is installed on both of the pulleys (32). The lateral moving device comprises a reciprocating screw (13) fixedly connected to one end of the rotating shaft (8), a large gear (11) is fixedly mounted on one end of the rotating shaft (8) close to the frame vertical plate (5), and a gear (22) is fixedly mounted on one end of the reciprocating screw (13) close to the frame vertical plate (5). The first embodiment comprises a plurality of small gears (23) meshing with the wheels (11), a slider (45) being fixedly mounted on the lower part of the frame bottom plate (19), the reciprocating screw (13) passing through the slider (45), and the reciprocating screw (13) and the slider (45) are matched, and a plurality of connecting grooves (46) matching with the plastic injection gun (14) are evenly arranged on the outer wall of the mold mounting turntable (12) near the plastic injection gun (14), and the connecting grooves (46) correspond to the molds one by one; Each of the molds is provided with a through hole (48) connected to the connecting groove (46), and the through holes (48) cooperate with the plastic injection gun (14), and the inner side wall of each of the connecting grooves (46) is elastically connected to a plurality of clamping blocks (28) for sealing the through holes (48) via a spring (27), and the side walls of the clamping blocks (28) close to the plastic injection gun (14) are all inclined surfaces; A cooling water pipe (44) is fixedly installed in the mold installation turntable (12), and the cooling water pipe (44) is arranged around the outside of the mold, and both ends of the cooling water pipe (44) extend through the axis of the rotating shaft (8) to the outside of the mold installation turntable (12) and the rotating shaft (8), and the cooling water pipe (44) is connected to a circulating water cooling device; A plurality of molding cavities are evenly arranged on the outer wall of the mold mounting turntable (12) on the side away from the plastic injection gun (14); a movable mold fixing plate (25) is fixedly installed on the outer wall of the rotating shaft (8) on the side close to the second frame upright plate (7); a plurality of movable molds (10) cooperating with the molding cavities are evenly and movably installed on the movable mold fixing plate (25); and the movable molds (10) correspond to the molding cavities one by one, and each of the movable molds (10) is connected to a control mechanism for automatically controlling the movement of the movable mold (10); The control mechanism comprises a hydraulic cylinder (9) fixedly mounted on a movable mold fixing plate (25), and an output end of the hydraulic cylinder (9) is fixedly connected to the movable mold (10); a plurality of conductive heads are evenly fixedly mounted on the outer ring of the mold mounting turntable (12), and the conductive heads correspond to the molding mold cavities one by one; two connectors (6) electrically connected to the hydraulic cylinder (9) are symmetrically mounted on the frame vertical plate (5), and the conductive heads cooperate with the connectors (6); The frame vertical plate (5) is provided with a positioning device that cooperates with the mold mounting turntable (12), and the positioning device includes a positioning block (33) fixedly mounted on the frame vertical plate (5), and a clamping block (37) that cooperates with the mold mounting turntable (12) is elastically connected to the positioning block (33) through a spring (35), and a magnet (36) is fixedly mounted on the end of the clamping block (37) away from the mold mounting turntable (12), and an electromagnet (34) that attracts the magnet (36) and the clamping block (37) away from the mold mounting turntable (12) is fixedly mounted in the positioning block (33), and the electromagnet (34) is electrically connected to the motor (4), and a plurality of clamping slots (38) that cooperate with the clamping block (37) are evenly opened on the mold mounting turntable (12), and the clamping slots (38) correspond to the molds one by one; Each of the movable molds (10) is movably provided with an ejector pin (29), an outer wall of the ejector pin (29) is evenly wound with a spring four (30), and two ends of the spring four (30) are respectively fixedly connected to the movable mold (10) and the ejector pin (29), and each of the movable mold fixing plates (25) is fixedly provided with a protrusion (24) that cooperates with the ejector pin (29); The output end of the hydraulic cylinder (9) is provided with a piston rod. A fixed block (39) is fixedly installed at one end of the hydraulic cylinder (9) close to the piston rod. Two clamping blocks (43) that cooperate with the piston rod are elastically connected to the fixed block (39) through a spring (41). Two ends of the two clamping blocks (43) that are away from the piston rod are fixedly installed with magnets (42). Two clamping grooves (47) that cooperate with the clamping blocks (43) are symmetrically provided on the piston rod. Two electromagnets (40) that attract the magnets (42) and the clamping blocks (43) away from the clamping grooves (47) are symmetrically installed in the fixed block (39), and the two electromagnets (40) are electrically connected to the hydraulic cylinder (9).

2. A multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: The thread pitch of the reciprocating screw rod (13) is not less than 0.35 mm.

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