Profiling mechanism and mold pressing equipment

Abstract

The utility model discloses a profiling mechanism and mould pressing equipment, the profiling mechanism comprises a profiling frame, an upper mould, a lower mould and a demoulding mechanism, the upper mould and the lower mould are arranged in a cavity of the profiling frame, the demoulding mechanism is arranged on the profiling frame, and the demoulding mechanism is used for enabling a molded lens to fall on a molded surface of the lower mould when the mould is opened. According to the utility model, the manipulator can conveniently clamp the lens from the lower die, and the whole process does not need to stop for manual treatment, so that the production continuity is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision compression molding of optical lenses, in particular to a compression mechanism and compression equipment. Background Art

[0002] Precision compression molding is the most suitable technology for mass production of glass optical lenses. It usually involves heating the optical glass preform, squeezing the glass preform using a mold of a specific shape, and then cooling it down to obtain a glass lens of the desired shape. Currently, there are two types of precision compression molding processing methods for optical lenses: one is isothermal compression molding (IGMP) in which the mold and glass are heated, pressed, annealed, and cooled together; the other is non-isothermal compression molding (NGMP) in which the mold only participates in pressing and annealing and does not participate or does not fully participate in heating and cooling. Compared with isothermal compression molding, non-isothermal compression molding has the significant advantages of long mold life and low production cost.

[0003] The Chinese patent with publication number CN104176911A discloses a non-isothermal compression molding equipment and molding method: first, the glass preform is heated to above the yield temperature (At) in the preheating station; then, the vacuum suction cup on the robot arm sucks the high-temperature preform and puts it into the mold of the molding station for compression molding and annealing; finally, the vacuum suction cup on another robot arm takes the molded lens out of the molding station and puts it in the cooling plate of the cooling station to cool to room temperature. The range of mold temperature variation is only a few dozen degrees Celsius, which is much smaller than that in the isothermal glass compression molding method. The hot and cold fatigue of the mold is effectively reduced, the service life of the mold is effectively extended, and the utilization rate is significantly improved.

[0004] The above-mentioned type of equipment uses vacuum suction or clamping to transfer preforms or lenses. It must be ensured that the formed lens stays on the same mold core after each pressing is completed and the upper and lower molds are separated. Otherwise, the clamping or suction will fail. After annealing is completed and the upper and lower molds are separated, it is uncontrollable which mold core the lens stays on. If the lens stays on the upper mold after the mold is opened, it will not be able to be sucked or clamped, and the machine must be stopped for manual processing, which seriously affects the continuity and efficiency of production. Utility Model Content

[0005] The main purpose of the utility model is to provide a pressing mechanism and a molding device, aiming to ensure production continuity and improve production efficiency.

[0006] To achieve the above-mentioned purpose, the utility model proposes a press mechanism, which includes a press frame, an upper mold and a lower mold arranged in a chamber of the press frame, and a demoulding mechanism arranged on the press frame. The press mechanism also includes a mold sleeve, an upper locking mold sleeve, an upper heating plate, an upper heating plate sleeve, a lower locking mold sleeve, a lower heating plate, a lower heating plate sleeve, a lifting shaft and a transmission device. The upper heating plate is fixed above the inner wall of the chamber of the press frame through the upper heating plate sleeve, the upper mold is fixed to the upper heating plate through the upper locking mold sleeve, and the mold The sleeve is sleeved on the upper mold, and the outer circle of the mold sleeve is provided with a ring connected to the demoulding mechanism. The lifting shaft extends into the chamber of the press frame from the bottom of the press frame. The lower heating plate is fixed to the top of the lifting shaft through the lower heating plate sleeve. The lower mold is fixed to the lower heating plate through the lower locking sleeve. The transmission device is connected to the bottom of the lifting shaft and is used to drive the lower mold to move up and down to achieve mold closing and opening. The demoulding mechanism is used to make the lens after shaping fall on the molding surface of the lower mold when the mold is opened.

[0007] A further technical solution of the utility model is that three concentric inner holes of different diameters are opened in the middle of the mold sleeve and increase in size from top to bottom, the effective diameter of the upper mold is smaller than the outer diameter of the lens, the effective diameter of the lower mold is larger than the outer diameter of the lens, the smallest inner hole of the mold sleeve matches the effective diameter of the upper mold, the largest inner hole of the mold sleeve matches the effective diameter of the lower mold, the middle inner hole of the mold sleeve is equal to the outer diameter of the lens, and the height of the middle inner hole of the mold sleeve is close to the thickness of the edge of the lens.

[0008] When the mold sleeve descends and separates from the upper mold, the transition section between the smallest inner hole and the middle inner hole of the mold sleeve pushes the lens to separate from the molding surface of the upper mold; when the mold sleeve ascends, the molding surface of the upper mold pushes the edge of the lens to separate from the middle inner hole of the mold sleeve and fall into the molding surface of the lower mold.

[0009] A further technical solution of the utility model is that an inclined surface is arranged on the effective surface of the lower mold.

[0010] A further technical solution of the utility model is that a chamfer is provided at a transition section between the largest inner hole of the die sleeve and the middle inner hole, and the chamfer cooperates with the inclined surface to improve the concentricity of the die sleeve and the lower die.

[0011] A further technical solution of the utility model is that the pressing mechanism also includes an infrared auxiliary heater, and the infrared auxiliary heater is arranged around the lower mold.

[0012] A further technical solution of the utility model is that the demoulding mechanism includes a demoulding bracket, an adjusting screw, a demoulding cylinder, a connecting beam and a demoulding connecting rod. The demoulding bracket is fixed on the profiling frame, and the demoulding cylinder is fixed on the demoulding bracket. The demoulding cylinder pushes the connecting beam to drive the demoulding connecting rod to move up and down. The adjusting screw is used to adjust the movement range of the demoulding connecting rod. The demoulding connecting rod extends into the chamber of the profiling frame, is centrally symmetrically distributed on the periphery of the upper heating plate, and is connected to the ring.

[0013] A further technical solution of the utility model is that the transmission device includes a screw nut, a screw, a bearing, a locking nut, a coupling and a servo motor, the screw nut is arranged on the inner wall of the lifting shaft, the screw extends into the lifting shaft and cooperates with the screw nut, the bearing is fixed in the chamber of the press frame through the locking nut, one end of the screw passes through the bearing, and is connected to the servo motor through the coupling.

[0014] In order to achieve the above object, the utility model also provides a molding device, which includes the pressing mechanism as described above.

[0015] The beneficial effects of the press mechanism and the molding equipment of the utility model are:

[0016] The utility model, through the above technical scheme, comprises a press frame, an upper mold and a lower mold arranged in the chamber of the press frame, and a demoulding mechanism arranged on the press frame. The press mechanism also comprises a mold sleeve, an upper locking mold sleeve, an upper heating plate, an upper heating plate sleeve, a lower locking mold sleeve, a lower heating plate, a lower heating plate sleeve, a lifting shaft and a transmission device. The upper heating plate is fixed above the inner wall of the chamber of the press frame through the upper heating plate sleeve, the upper mold is fixed on the upper heating plate through the upper locking mold sleeve, the mold sleeve is sleeved on the upper mold, and the outer circle of the mold sleeve is provided with a collar to connect the demoulding mechanism. The lifting shaft extends from the bottom of the press frame into the chamber of the press frame, the lower heating plate is fixed to the top of the lifting shaft through the lower heating plate sleeve, the lower mold is fixed to the lower heating plate through the lower locking mold sleeve, the transmission device is connected to the bottom of the lifting shaft, and is used to drive the lower mold to move up and down to achieve mold closing and mold opening, and the demoulding mechanism is used to make the lens after shaping fall on the molding surface of the lower mold when the mold is opened, so as to facilitate the robot to clamp the lens from the lower mold. There is no need to stop the machine for manual processing during the whole process, which ensures the continuity of production and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the pressing mechanism of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the upper mold and the lower mold;

[0020] Figure 3 Schematic diagram of lens demoulding action.

[0021] Description of Figure Numbers:

[0022] Press frame 10; upper mold 20; effective diameter 201 of upper mold 20; molding surface 202 of upper mold 20; lower mold 30; effective diameter 301 of lower mold 30; effective diameter 302 of lower mold 30; inclined surface 303; demoulding mechanism 40: demoulding support 401; adjusting screw 402; demoulding cylinder 403; connecting beam 404; demoulding connecting rod 405; mold sleeve 50; minimum inner hole 501 of mold sleeve 50; maximum inner hole 502 of mold sleeve 50 ; The middle inner hole 503 of the mold sleeve 50; the transition section 504; the chamfer 505; the upper locking mold sleeve 60; the upper heating plate 70; the upper heating plate sleeve 80; the lower locking mold sleeve 90; the lower heating plate 100; the lower heating plate sleeve 110; the lifting shaft 120; the transmission device 130; the screw nut 131; the screw 132; the bearing 133; the locking nut 134; the coupling 135; the servo motor 136; the collar 140; the lens 150: the outer diameter 151 of the lens 150.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a molding device. The technical solution adopted by the utility model is mainly to add a demoulding mechanism to the molding mechanism station of the non-isothermal molding device in the prior art, and cooperate with the mold so that the lens stays on the lower mold when the mold is opened after the molding is completed, and then is clamped and cooled to obtain a lens with good quality.

[0026] Please refer to Figures 1 to 3 The preferred embodiment of the press mechanism of the utility model comprises a press frame 10, an upper mold 20 and a lower mold 205 arranged in the chamber of the press frame 10, and a demoulding mechanism 40 arranged on the press frame. The press mechanism also includes a mold sleeve 50, an upper locking mold sleeve 60, an upper heating plate 70, an upper heating plate sleeve 80, a lower locking mold sleeve 90, a lower heating plate 100, a lower heating plate sleeve 110, a lifting shaft 120 and a transmission device 130. The upper heating plate 70 is moved by the upper heating plate sleeve 2 21 is fixed on the upper wall of the chamber of the press frame 10, the upper mold 20 is fixed on the upper heating plate 70 through the upper locking mold sleeve 60, the mold sleeve 50 is sleeved on the upper mold 20, and the outer circle of the mold sleeve 202 is provided with a ring 140 to connect the demolding mechanism 40, the inner hole of the ring 140 is connected to the upper mold 20, and the edge of the ring 140 is connected to the demolding connecting rod 405 of the demolding mechanism 40, which can reduce the outer circle size of the mold sleeve 50 and improve the heating and cooling efficiency of the mold sleeve 50.

[0027] The lifting shaft 120 extends from the bottom of the press frame 10 into the chamber of the press frame 10, the lower heating plate 100 is fixed to the top of the lifting shaft 120 through the lower heating plate sleeve 110, and the lower mold 205 is fixed to the lower heating plate 100 through the lower locking mold sleeve 221. The transmission device 130 is connected to the bottom of the lifting shaft 120, and is used to drive the lower mold 205 to move up and down to achieve mold closing and mold opening to shape the lens 150. The demolding mechanism 40 is used to make the lens 150 after shaping fall on the molding surface of the lower mold 205 when the mold is opened.

[0028] In this embodiment, there are at least two demoulding rods 405 of the demoulding mechanism 40, and two or more through holes for the demoulding rods 405 of the demoulding mechanism 40 to pass through are arranged around the position where the heating plate 70 is assembled on the press frame 10. The demoulding rods 405 pass through the through holes, and the through holes are symmetrically distributed around the upper heating plate 70, which can drive the mold sleeve 50 to move up and down along the upper mold 20 more smoothly. When the demoulding rods 405 push and pull the mold sleeve 50, the mold sleeve 50 is evenly stressed and does not get stuck.

[0029] The upper end of the demoulding connecting rod 405, which is located outside the molding frame 10, is connected to the demoulding cylinder 403 through the connecting beam 404. The lower end of the demoulding connecting rod 405 extends into the molding frame 10 and is connected to the mold sleeve 50 of the upper mold 20. The operation of the demoulding cylinder 403 drives the mold sleeve 50 to move up and down along the upper mold 20, so that the lens 150 after shaping falls on the molding surface of the lower mold 205 when the mold is opened.

[0030] In this embodiment, the demolding mechanism 40 allows the lens after shaping to fall onto the molding surface of the lower mold 205 when the mold is opened, making it easy for the robot to clamp the lens from the lower mold 205. The entire process does not require shutdown for manual processing, thereby ensuring production continuity and improving production efficiency.

[0031] Furthermore, if Figure 2 As shown, in this embodiment, a three-level concentric inner hole with three different diameters that increase in size from top to bottom is opened in the middle of the mold sleeve 50, the effective diameter 201 of the upper mold 20 is smaller than the outer diameter 151 of the lens 150, and the effective diameter 301 of the lower mold 205 is larger than the outer diameter 151 of the lens 150.

[0032] The minimum inner hole 501 of the mold sleeve 50 matches the effective diameter 201 of the upper mold 20, and the matching clearance is 1-4um. The maximum inner hole 502 of the mold sleeve 50 matches the effective diameter 302 of the lower mold 205, and the matching clearance is 1-4um. The middle inner hole 503 of the mold sleeve 50 is equal to the outer diameter 151 of the lens 150, and the height of the middle inner hole 503 of the mold sleeve 50 is close to the edge thickness of the lens 150.

[0033] Among them, the smallest inner hole 501 of the mold sleeve 50 refers to the hole with the smallest aperture located at the top, the middle inner hole 503 of the mold sleeve 50 refers to the hole with the middle aperture located in the middle, and the largest inner hole 502 of the mold sleeve 50 refers to the hole with the largest aperture located at the bottom.

[0034] Since the minimum inner hole 501 of the mold sleeve 50 is smaller than the outer diameter 151 of the lens 150, when the mold sleeve 50 moves downward to separate from the upper mold 20, the transition section 504 between the minimum inner hole 501 and the middle inner hole of the mold sleeve 50 pushes the lens 150 to separate from the molding surface 202 of the upper mold 20. When the mold sleeve 50 rises again, the molding surface 202 of the upper mold 20 pushes the edge of the lens 150 to separate from the middle inner hole 503 of the mold sleeve 50 and fall into the molding surface of the lower mold 205.

[0035] When the molding mechanism is working, the glass preform is sent into the molding mechanism by the manipulator after the preheating mechanism completes the preheating. The lifting shaft 120 rises to complete the mold closing. The demoulding cylinder 403 is actuated. The demoulding connecting rod 405 pushes the mold sleeve 50 downward. The step plane between the middle inner hole 503 and the largest inner hole of the mold sleeve 50 fits the molding surface of the lower mold 205. Then, the molding and annealing process begins. After the annealing process is completed, the lower mold 205 and the mold sleeve 50 are lowered for a distance along with the lifting shaft 120. Since the diameter of the smallest inner hole 501 of the mold sleeve 50 is smaller than the outer diameter of the lens 150, the largest inner hole 501 of the mold sleeve 50 is smaller than the outer diameter of the lens 150. The step between the small inner hole 501 and the middle inner hole 503 of the mold sleeve 50 pushes the edge of the lens 150 to separate the lens 150 from the upper mold 20, and then the demoulding cylinder 403 is reset, and the demoulding connecting rod 405 pulls the mold sleeve 50 to move up until the step plane between the middle inner hole 503 and the largest inner hole of the mold sleeve 50 is close to the molding surface of the upper mold. At this time, the edge of the lens 150 is separated from the mold sleeve 50, and because the lens 150 has lost its adhesion to the upper mold 20, the lens 150 falls into the lower mold 205; finally, the robot takes out the lens 150 from the lower mold 205 and sends it to the cooling station to complete the cooling process. Not only will the entire molding process not cause production interruption due to the lens 150 sticking to the upper mold 20, but the middle inner hole 503 of the mold sleeve 50 also accurately controls the outer diameter 151 of each lens 150.

[0036] Please refer to Figure 3 Schematic diagram of the demoulding action of the lens 150 shown in FIG. During the demoulding process of the lens 150, the preheated glass preform is sent into the lower mold 205 and then the mold is closed (such as Figure 3 As shown in a), the lower mold 205 rises to complete the pressing and annealing (as shown in Figure 3 The demoulding connecting rod 405 pushes the mold sleeve 50 to follow the lower mold 205 to descend (as shown in FIG. Figure 3 As shown in c), the lower mold 205 stops descending, the demoulding connecting rod 405 pulls up the mold sleeve 50 to drive the lens 150 to rise (as shown in Figure 3 d), the mold sleeve 50 rises, the upper mold 20 blocks the lens 150, the outer edge of the lens 150 is separated from the middle inner hole 503 of the mold sleeve 50, and the lens 150 falls into the lower mold 205 (as shown in FIG. Figure 3 The lens 150 stays on the lower mold 205, and the lower mold 205 descends to complete the mold opening (as shown in FIG. Figure 3 (shown in f).

[0037] Furthermore, in this embodiment, an inclined surface 303 is provided on the effective surface of the lower mold 205 , and a chamfer 505 is provided on the transition section 504 between the largest inner hole 502 and the middle inner hole of the mold sleeve 50 .

[0038] Specifically, the molding surface of the lower mold 205 is provided with a step with a transition bevel 303, and the step plane is lower than the edge height of the effective molding surface of the lower mold 205. When the mold is closed, the chamfer 505 below the middle inner hole 503 of the mold sleeve 50 cooperates with the bevel 303, which can improve the concentricity of the mold sleeve 50 and the upper mold 20 and the lower mold 205.

[0039] In this embodiment, the pressing mechanism also includes an infrared auxiliary heater.

[0040] Furthermore, in this embodiment, the demolding mechanism 40 includes a demolding bracket 401, an adjusting screw 402, a demolding cylinder 403, a connecting beam 404 and a demolding connecting rod 405. The demolding bracket 401 is fixed on the press frame 10, and the demolding cylinder 403 is fixed on the demolding bracket 401. The demolding cylinder 403 pushes the connecting beam 404 to drive the demolding connecting rod 405 to move up and down. The adjusting screw 402 is used to adjust the movement range of the demolding connecting rod 405. The demolding connecting rod 405 extends into the chamber of the press frame 10, and is centrally symmetrically distributed on the periphery of the upper heating plate 70 and connected to the ring 140.

[0041] Please refer to Figure 3 The transmission device 130 is used to control the lifting and lowering of the lifting shaft 120, and includes a screw nut 131, a screw 132, a bearing 133, a locking nut 134, a coupling 135 and a servo motor 136. The screw nut 131 is arranged on the inner wall of the lifting shaft 120, the screw 132 extends into the lifting shaft 120 and cooperates with the screw nut 131, the bearing 133 is fixed in the chamber of the press frame 10 by the locking nut 134, and one end of the screw 132 passes through the bearing 133 and is connected to the servo motor 136 through the coupling 135.

[0042] The beneficial effects of the press-forming mechanism of the utility model are:

[0043] The utility model, through the above technical scheme, comprises a press frame, an upper mold and a lower mold arranged in the chamber of the press frame, and a demoulding mechanism arranged on the press frame. The press mechanism also comprises a mold sleeve, an upper locking mold sleeve, an upper heating plate, an upper heating plate sleeve, a lower locking mold sleeve, a lower heating plate, a lower heating plate sleeve, a lifting shaft and a transmission device. The upper heating plate is fixed above the inner wall of the chamber of the press frame through the upper heating plate sleeve, the upper mold is fixed on the upper heating plate through the upper locking mold sleeve, the mold sleeve is sleeved on the upper mold, and the outer circle of the mold sleeve is provided with a collar to connect the demoulding mechanism. The lifting shaft extends from the bottom of the press frame into the chamber of the press frame, the lower heating plate is fixed to the top of the lifting shaft through the lower heating plate sleeve, the lower mold is fixed to the lower heating plate through the lower locking mold sleeve, the transmission device is connected to the bottom of the lifting shaft, and is used to drive the lower mold to move up and down to achieve mold closing and mold opening, and the demoulding mechanism is used to make the lens after shaping fall on the molding surface of the lower mold when the mold is opened, so as to facilitate the robot to clamp the lens from the lower mold. There is no need to stop the machine for manual processing during the whole process, which ensures the continuity of production and improves production efficiency.

[0044] To achieve the above objectives, the utility model further proposes a molding device, which includes a molding mechanism as described in the above embodiment. The structure and working principle of the molding mechanism have been described in detail above and will not be repeated here.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A pressing mechanism, characterized in that: The mold assembly comprises a molding frame, an upper mold and a lower mold arranged in the chamber of the molding frame, and a demoulding mechanism arranged on the molding frame, wherein the molding mechanism also comprises a mold sleeve, an upper locking mold sleeve, an upper heating plate, an upper heating plate sleeve, a lower locking mold sleeve, a lower heating plate, a lower heating plate sleeve, a lifting shaft and a transmission device, wherein the upper heating plate is fixed above the inner wall of the chamber of the molding frame through the upper heating plate sleeve, the upper mold is fixed on the upper heating plate through the upper locking mold sleeve, the mold sleeve is sleeved on the upper mold, the outer circle of the mold sleeve is provided with a collar to connect the demoulding mechanism, the lifting shaft extends into the chamber of the molding frame from the bottom of the molding frame, the lower heating plate is fixed on the top of the lifting shaft through the lower heating plate sleeve, the lower mold is fixed on the lower heating plate through the lower locking mold sleeve, the transmission device is connected with the bottom of the lifting shaft, and is used to drive the lower mold to move up and down to realize mold closing and mold opening to shape the lens, and the demoulding mechanism is used to make the lens after shaping fall on the molding surface of the lower mold when the mold is opened.

2. The pressing mechanism according to claim 1, characterized in that: The middle of the mold sleeve is provided with three concentric inner holes of different diameters which increase in size from top to bottom. The effective diameter of the upper mold is smaller than the outer diameter of the lens, the effective diameter of the lower mold is larger than the outer diameter of the lens, the smallest inner hole of the mold sleeve matches the effective diameter of the upper mold, the largest inner hole of the mold sleeve matches the effective diameter of the lower mold, the middle inner hole of the mold sleeve is equal to the outer diameter of the lens, and the height of the middle inner hole of the mold sleeve is close to the thickness of the edge of the lens; When the mold sleeve descends and separates from the upper mold, the transition section between the smallest inner hole and the middle inner hole of the mold sleeve pushes the lens to separate from the molding surface of the upper mold; when the mold sleeve ascends, the molding surface of the upper mold pushes the edge of the lens to separate from the middle inner hole of the mold sleeve and fall into the molding surface of the lower mold.

3. The pressing mechanism according to claim 2, characterized in that: The effective surface of the lower mold is provided with an inclined surface.

4. The pressing mechanism according to claim 3, characterized in that: A chamfer is provided at a transition section between the largest inner hole of the mold sleeve and the middle inner hole, and the chamfer cooperates with the inclined surface to improve the concentricity of the mold sleeve and the lower mold.

5. The pressing mechanism according to claim 4, characterized in that: The pressing mechanism also includes an infrared auxiliary heater, which is arranged around the lower mold.

6. The pressing mechanism according to claim 5, characterized in that: The demoulding mechanism includes a demoulding bracket, an adjusting screw, a demoulding cylinder, a connecting beam and a demoulding connecting rod. The demoulding bracket is fixed on the profiling frame, and the demoulding cylinder is fixed on the demoulding bracket. The demoulding cylinder pushes the connecting beam to drive the demoulding connecting rod to move up and down. The adjusting screw is used to adjust the movement range of the demoulding connecting rod. The demoulding connecting rod extends into the chamber of the profiling frame, is centrally symmetrically distributed on the periphery of the upper heating plate, and is connected to the ring.

7. The pressing mechanism according to claim 6, characterized in that: The transmission device includes a screw nut, a screw, a bearing, a locking nut, a coupling and a servo motor. The screw nut is arranged on the inner wall of the lifting shaft, the screw extends into the lifting shaft and cooperates with the screw nut, the bearing is fixed in the chamber of the press frame through the locking nut, one end of the screw passes through the bearing and is connected to the servo motor through the coupling.

8. A molding device, characterized in that: The molding equipment comprises a molding mechanism as described in any one of claims 1 to 7.

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