Two-fulcrum type lower die lifting structure of cup making machine

Abstract

The utility model discloses a two-fulcrum type lower die lifting structure of a cup making machine, which comprises a rack, a lower die holder and a driving mechanism, the driving mechanism comprises a servo motor and a speed reducer, an output shaft of the servo motor is connected with an input end of the speed reducer, and a group of lifting devices are respectively arranged on output shafts of the speed reducer on two sides. The lifting device comprises two bearing seats, a driving rotating arm, a driven rotating arm, a driven shaft and a lower die swing arm, an output shaft of the speed reducer can drive the driving rotating arm to rotate, the driven shaft penetrates through the bearing seats to be rotationally connected with the lower portion of the driven rotating arm, and swing arm shafts are arranged on the upper portion of the driving rotating arm and the upper portion of the driven rotating arm; the lifting mechanism is simple in structure, the two sets of lifting devices are used for supporting, stability is improved, the servo motor is adopted for driving, the response speed is high, production efficiency can be improved, the speed reducer can increase torque, vibration and noise can be reduced, and the stability of the lifting structure is further improved.

Description

Technical Field

[0001] The utility model relates to the field of cup-making machines, in particular to a two-point type lower die lifting structure of a cup-making machine. Background Art

[0002] Cup-making machines usually adopt a hydraulic cylinder lifting mechanism to realize the lifting drive of the lower die base. The hydraulic system relies on liquid (such as hydraulic oil) to transmit pressure and power. At present, the cup-making machines using the hydraulic cylinder lifting mechanism have the problems that the stroke of the oil cylinder is relatively slow and the opening / closing die process is not smooth enough. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a two-point type lower die lifting structure of a cup-making machine.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a two-point type lower die lifting structure of a cup-making machine, comprising a frame, a lower die base, and a driving mechanism. The driving mechanism includes a servo motor and a reducer. The output shaft of the servo motor is connected to the input end of the reducer. The reducer is a double-output shaft reducer. A reducer output shaft is arranged on each side of the reducer. A set of lifting devices is arranged on each of the reducer output shafts on both sides. The lifting device includes two bearing seats, a driving rotating arm, a driven rotating arm, a driven shaft, and a lower die swing arm. The bearing seats are fixed on the frame. The reducer output shaft and the driven shaft are respectively connected to a bearing seat by bearings. The reducer output shaft passes through the bearing seat and is connected to the lower part of the driving rotating arm. The reducer output shaft can drive the driving rotating arm to rotate. The driven shaft passes through the bearing seat and is connected to the lower part of the driven rotating arm. A swing arm shaft is arranged on the upper parts of the driving rotating arm and the driven rotating arm. The lower part of the lower die swing arm is connected to the swing arm shaft through a bearing. The upper part of the lower die swing arm is rotatably connected to the lower die base.

[0005] Further, two groups of lower die shaft seats are arranged at the bottom of the lower die base. A pin shaft is fixedly arranged on the lower die shaft seat. The upper part of the lower die swing arm is sleeved on the pin shaft.

[0006] Further, a clamping groove is arranged on one side of the lower die shaft seat. A rotation stopping piece is installed on one side of the pin shaft close to the clamping groove. The rotation stopping piece is placed in the clamping groove.

[0007] Further, a non-circular swing arm shaft opening and an output shaft opening are arranged on the driving rotating arm. The shape of one end of the swing arm shaft placed in the swing arm shaft opening matches the shape of the swing arm shaft opening. The shape of one end of the reducer output shaft placed in the output shaft opening matches the shape of the output shaft opening.

[0008] Further, the frame includes a base and a limiting rod. A limiting channel is arranged on the lower die base and placed in the limiting rod.

[0009] The beneficial effects of the present utility model are as follows: A servo motor and a reducer are used as a driving mechanism to provide power, with a short start-stop response time. The rotational motion of the driving mechanism is converted into a lifting motion through two sets of lifting devices on both sides of the reducer, thereby synchronously controlling the lifting of the lower die base. The two sets of lifting devices are directly controlled by the same reducer, with a simple structure and a high synchronization rate. Moreover, the two sets of lifting devices synchronously and multi-directionally stably support the bottom of the lower die base, making the opening / closing process of the lower die base smoother. Description of the Drawings

[0010] Figure 1 Schematic diagram of the driving mechanism and the lifting device.

[0011] Figure 2 Schematic diagram of the whole of the present utility model.

[0012] Figure 3 Schematic diagram of the active rotating arm.

[0013] In the figure: 1. Driving mechanism; 11. Servo motor; 12. Reducer; 121. Reducer output shaft; 2. Lifting device; 21. Bearing seat; 22. Active rotating arm; 23. Driven rotating arm; 24. Driven shaft; 25. Lower die swing arm; 26. Swing arm shaft; 3. Frame; 31. Base; 32. Limit rod; 4. Lower die base; 41. Limit channel; 42. Lower die shaft seat; 421. Card slot; 5. Pin shaft; 51. Anti-rotation piece. Detailed Implementation Manner

[0014] The following further elaborates on the present utility model in conjunction with the accompanying drawings: A two-point type lower die lifting structure of a cup-making machine, including a frame 3, a lower die seat 4, and a driving mechanism 1. The lower die seat is used to install the lower die. The driving mechanism 1 includes a servo motor 11 and a reducer 12. The servo motor 11 has a relatively low start-stop response time, which is beneficial to improving efficiency. The reducer 12 can increase the output torque, reduce the influence of load fluctuations, reduce vibration and noise, so as to improve the overall stability of the lifting structure. In addition, it can also distribute power to two sets of lifting devices 2. The output shaft of the servo motor 11 is connected to the input end of the reducer 12. The reducer 12 is a double-output shaft reducer. On both sides of the reducer 12, there is a reducer output shaft 121 respectively. On each of the two reducer output shafts 121 on both sides, there is a set of lifting devices 2. The lifting device 2 is used to convert the rotational motion of the reducer output shaft 121 into a lifting motion. The lifting device 2 includes two bearing seats 21, a driving rotating arm 22, a driven rotating arm 23, a driven shaft 24, and a lower die swing arm 25. The bearing seats 21 are fixed on the frame 3. The reducer output shaft 121 and the driven shaft 24 are respectively connected to a bearing seat 21 by bearings. The reducer output shaft 121 passes through the bearing seat 21 and is connected to the lower part of the driving rotating arm 22. The reducer output shaft 121 can drive the driving rotating arm 22 to rotate. The driven shaft 24 passes through the bearing seat 21 and is connected to the lower part of the driven rotating arm 23. On the upper parts of the driving rotating arm 22 and the driven rotating arm 23, there is a swing arm shaft 26. The lower part of the lower die swing arm 25 is connected to the swing arm shaft 26 by a bearing. The upper part of the lower die swing arm 25 is rotatably connected to the lower die seat 4. When the reducer output shaft 121 rotates, it drives the driving rotating arm 22 to rotate, causing the height of the swing arm shaft 26 between the driving rotating arm 22 and the driven rotating arm 23 to change. Furthermore, the lower die swing arm 25 drives the height of the lower die seat 4 to change, driving the lower die seat 4 to lift and lower.

[0015] Furthermore, two sets of lower die shaft seats 42 are provided at the bottom of the lower die seat 4. The two sets of lifting devices 2 support the lower die seat 4 synchronously, making the movement of the lower die seat 4 more stable. A pin shaft 5 is fixedly provided on the lower die shaft seat 42. The upper part of the lower die swing arm 25 is sleeved on the pin shaft 5. The lower die swing arm 25 drives the lower die seat 4 to move through the lower die shaft seat 42.

[0016] Furthermore, a card slot 421 is provided on one side of the lower die shaft seat 42. A rotation stop piece 51 is installed on one side of the pin shaft 5 close to the card slot 421. The rotation stop piece 51 is placed into the card slot 421 to ensure that the pin shaft 5 does not move, eliminating the frictional loss between the pin shaft 5 and the lower die shaft seat 42, so as to improve the service life of the pin shaft 5 and the lower die shaft seat 42.

[0017] Further, a non-circular swing arm shaft opening 222 and an output shaft opening 221 are provided on the active rotating arm 22. The shape of one end of the swing arm shaft 26 inserted into the swing arm shaft opening 222 matches that of the swing arm shaft opening 222, so that the swing arm shaft 26 is fixed on the active rotating arm 22, eliminating the frictional loss between the swing arm shaft 26 and the active rotating arm 22. The shape of one end of the reducer output shaft 121 inserted into the output shaft opening 221 matches that of the output shaft opening 221. When the reducer output shaft 121 rotates, it can drive the active rotating arm 22 to rotate accordingly.

[0018] Further, the frame 3 includes a base 31 and a limiting rod 32. A limiting channel 41 is provided on the lower die base 4 and inserted into the limiting rod 32 to limit the lower die base 4 to move only longitudinally.

[0019] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A two-point type lower die lifting structure of a cup-making machine, characterized in that It includes a frame, a lower die base, and a driving mechanism. The driving mechanism includes a servo motor and a reducer. The output shaft of the servo motor is connected to the input end of the reducer. The reducer is a double-output shaft reducer. A reducer output shaft is provided on each side of the reducer. A set of lifting devices is provided on each of the reducer output shafts on both sides. The lifting device includes two bearing seats, a driving rotating arm, a driven rotating arm, a driven shaft, and a lower die swing arm. The bearing seats are fixed on the frame. The reducer output shaft and the driven shaft are respectively connected to a bearing seat by bearings. The reducer output shaft passes through the bearing seat and is connected to the lower part of the driving rotating arm. The reducer output shaft can drive the driving rotating arm to rotate. The driven shaft passes through the bearing seat and is connected to the lower part of the driven rotating arm. A swing arm shaft is provided on the upper parts of the driving rotating arm and the driven rotating arm. The lower part of the lower die swing arm is connected to the swing arm shaft by a bearing. The upper part of the lower die swing arm is rotatably connected to the lower die base.

2. The two-point type lower die lifting structure of a cup-making machine according to claim 1, characterized in that Two sets of lower die shaft seats are provided at the bottom of the lower die base. A pin shaft is fixedly provided on the lower die shaft seat. The upper part of the lower die swing arm is sleeved on the pin shaft.

3. The two-point type lower die lifting structure of a cup-making machine according to claim 2, characterized in that A card slot is provided on one side of the lower die shaft seat. A non-rotating piece is installed on one side of the pin shaft close to the card slot. The non-rotating piece is placed into the card slot.

4. The two-point support type lower die lifting structure of a cup-making machine according to claim 1, characterized in that A non-circular swing arm shaft opening and an output shaft opening are provided on the driving rotating arm. The shape of one end of the swing arm shaft placed into the swing arm shaft opening matches the swing arm shaft opening. The shape of one end of the reducer output shaft placed into the output shaft opening matches the output shaft opening.

5. The two-point type lower die lifting structure of a cup-making machine according to claim 1, characterized in that The frame includes a base and a limiting rod. A limiting channel is provided on the lower die base and the limiting rod is placed into the limiting channel.

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