Multi-head screw rod servo pressurizing and pressure maintaining structure of forming machine

Abstract

The utility model belongs to the technical field of forming machines, and particularly relates to a multi-head screw rod servo pressurizing and pressure maintaining structure of a forming machine, which comprises a rack, a lower forming template arranged on the rack and an upper forming template capable of moving up and down relative to the lower forming template, and a connecting rod mechanism arranged between the upper forming template and the lower forming template, the rack is rotatably connected with a multi-head screw rod along the vertical direction through a bearing, the upper end of the multi-head screw rod is in transmission connection with an output rotating shaft of a servo motor fixed on the rack, the multi-head screw rod is in threaded connection with a screw rod nut fixed on the connecting rod mechanism, and the servo motor drives the connecting rod mechanism to do telescopic motion through the multi-head screw rod and the screw rod nut. The driving motor drives the connecting rod mechanism to stretch out and draw back through the multi-head lead screw and the lead screw nut so as to drive the shaping upper die plate to ascend and descend, cost is low, transmission is stable and reliable, the multi-head lead screw with large screw pitch and lead is adopted, and large pressure can be provided and continuously applied for rapid shaping.

Description

Technical Field:

[0001] The utility model belongs to the technical field of forming machines, and particularly refers to a multi-head screw rod servo boosting and pressure maintaining structure of a forming machine. Background Art:

[0002] There is a disclosed three-station pulp molding device in an existing Chinese invention patent application (application publication number CN113152156A), which includes a frame, an adsorption molding mechanism, a hot pressing and shaping mechanism, and a material receiving mechanism arranged on the frame; the adsorption molding mechanism is arranged at the middle position on the top of the frame; two groups of hot pressing and shaping mechanisms are provided and are respectively arranged on both sides of the adsorption molding mechanism; two groups of material receiving mechanisms are provided and are respectively arranged outside the hot pressing and shaping mechanisms; the two groups of material receiving mechanisms are respectively installed at both ends of the top of the frame through guide rails and sliders; wherein, the hot pressing and shaping mechanism includes a heating plate, a shaping lower mold, a shaping upper mold, a shaping upper mold fixing plate, a gas-liquid boosting cylinder, and two groups of shaping transfer lifting cylinders; the heating plate is fixedly arranged at one end of the top of the material receiving mechanism; the shaping lower mold is arranged on the top of the heating plate; the shaping upper mold fixing plate is installed above the frame through a fixing rod; the gas-liquid boosting cylinder is arranged upside down at the center position on the top of the shaping upper mold fixing plate; the two groups of shaping transfer lifting cylinders are arranged on both sides of the gas-liquid boosting cylinder; the shaping upper mold is installed below the shaping upper mold fixing plate through guide columns and guide sleeves and is located directly above the shaping lower mold; the top of the shaping upper mold is respectively connected to the gas-liquid boosting cylinder and the shaping transfer lifting cylinder through a boosting cylinder connecting rod and a cylinder connecting rod.

[0003] That is, in the above structure, a relatively large pressure is provided by the gas-liquid boosting cylinder and applied to the shaping upper mold so that it can be combined with the shaping lower mold, and the pressure is maintained for a period of time to complete hot pressing and shaping. After the hot pressing and shaping process is completed, the shaping upper mold is lifted by the shaping transfer lifting cylinder to realize mold opening. It can be seen that the operation of the shaping upper mold needs to be completed with the help of two power sources, resulting in problems such as relatively high equipment cost, low transmission stability, and low boosting and pressure maintaining efficiency. Summary of the Invention:

[0004] The purpose of the utility model is to provide a multi-head screw rod servo boosting and pressure maintaining structure of a forming machine, in which a driving motor drives a connecting rod mechanism to expand and contract through a multi-head screw rod and a screw nut, so as to drive a shaping upper template to move up and down. It not only has low cost, stable and reliable transmission, but also adopts a multi-head screw rod with a large pitch and lead, which can provide and continuously apply a relatively large pressure for quickly realizing shaping.

[0005] The utility model is realized as follows:

[0006] A multi-head screw rod servo boosting and pressure maintaining structure for a shaping machine, comprising a frame, on which a lower shaping template is arranged, and an upper shaping template capable of moving up and down relative to the lower shaping template. A connecting rod mechanism is arranged between the upper shaping template and the lower shaping template. The frame is vertically rotatably connected with a multi-head screw rod through a bearing. The upper end of the multi-head screw rod is in transmission connection with the output rotating shaft of a servo motor fixed on the frame. A screw nut fixed on the connecting rod mechanism is screwed on the multi-head screw rod. The servo motor drives the connecting rod mechanism to perform telescopic movement through the multi-head screw rod and the screw nut.

[0007] In the above-mentioned multi-head screw rod servo boosting and pressure maintaining structure for a shaping machine, the connecting rod mechanism includes a driving seat, and first hinge rods hinged on the left and right side parts of the upper shaping template. Second hinge rods corresponding to the first hinge rods are hinged on the frame. The lower end of the second hinge rod is hinged and matched with the upper end of the first hinge rod. The middle part of the second hinge rod and the corresponding side part of the driving seat are hinged and linked through a third hinge rod. The screw nut is fixedly connected to the driving seat.

[0008] In the above-mentioned multi-head screw rod servo boosting and pressure maintaining structure for a shaping machine, two first hinge rods, second hinge rods and third hinge rods on the same side are all arranged at intervals longitudinally. The front and rear ends of a first longitudinal pin shaft respectively penetrate and are hinged at the hinge joints of the front and rear pairs of second hinge rods and third hinge rods on the same side. The front and rear ends of a second longitudinal pin shaft respectively penetrate and are hinged at the hinge joints of the two third hinge rods and the driving seat on the same side.

[0009] In the above-mentioned multi-head screw rod servo boosting and pressure maintaining structure for a shaping machine, the output rotating shaft of the servo motor is in transmission connection with the input end of a gearbox. The output end of the gearbox is in transmission connection with the upper end of the multi-head screw rod through a coupling.

[0010] In the above-mentioned multi-head screw rod servo boosting and pressure maintaining structure for a shaping machine, a plurality of inner vertical guide rods vertically arranged on the frame penetrate through and are slidably matched with the driving seat through bushings.

[0011] The prominent advantages of the present utility model compared with the prior art are:

[0012] In the present utility model, the driving motor drives the connecting rod mechanism to perform telescopic movement through the multi-head screw rod and the screw nut, so as to drive the upper shaping template to move up and down. It not only has low cost, stable and reliable transmission, but also adopts a multi-head screw rod with a larger pitch and lead, which can provide and continuously apply a large pressure for quickly realizing shaping. Description of the drawings:

[0013] Figure 1 It is the overall front view of the present utility model;

[0014] Figure 2This is the overall three-dimensional view of the present utility model.

[0015] In the figure: 1, frame; 2, lower sizing template; 3, upper sizing template; 4, multi-head screw rod; 5, servo motor; 6, screw nut; 7, driving seat; 8, first hinge rod; 9, second hinge rod; 10, third hinge rod; 11, first longitudinal pin shaft; 12, second longitudinal pin shaft; 13, gearbox; 14, coupling; 15, inner vertical guide rod. Specific implementation manner:

[0016] The following further describes the present utility model with specific embodiments. Refer to Figure 1 —2:

[0017] A multi-head screw rod servo boosting and pressure maintaining structure of a sizing machine includes a frame 1. A lower sizing template 2 is arranged on the frame 1, and an upper sizing template 3 capable of moving up and down relative to the lower sizing template 2 is provided. A connecting rod mechanism is arranged between the upper sizing template 3 and the lower sizing template 2. The frame 1 is rotatably connected with a multi-head screw rod 4 vertically through a bearing. The upper end of the multi-head screw rod 4 is in transmission connection with the output rotating shaft of a servo motor 5 fixed on the frame 1. A screw nut 6 fixed on the connecting rod mechanism is screwed on the multi-head screw rod 4. The servo motor 5 drives the connecting rod mechanism to perform telescopic movement through the multi-head screw rod 4 and the screw nut 6.

[0018] The present utility model drives the connecting rod mechanism to perform telescopic movement through the multi-head screw rod 4 and the screw nut 6 by a driving motor, so as to drive the upper sizing template 3 to move up and down. It not only has low cost, stable and reliable transmission, but also adopts a multi-head screw rod 4 with a large pitch and lead, which can provide and continuously apply a large pressure for quickly realizing sizing.

[0019] Wherein, in this embodiment, the specific structure adopted by the connecting rod mechanism is: the connecting rod mechanism includes a driving seat 7 and first hinge rods 8 hinged on the left and right side parts of the upper sizing template 3. Second hinge rods 9 corresponding to the first hinge rods 8 are hinged on the frame 1. The lower end of the second hinge rod 9 is hinged and matched with the upper end of the first hinge rod 8. The middle part of the second hinge rod 9 and the corresponding side part of the driving seat 7 are hinged and linked through a third hinge rod 10. The screw nut 6 is fixedly connected to the driving seat 7. That is, under the drive of the multi-head screw rod 4 and the screw nut 6, the driving seat 7 moves up and down and drives the first hinge rod 8 and the second hinge rod 9 to rotate through the third hinge rod 10. When the upper sizing template 3 is pressed on the lower sizing template 2, the axes of the first hinge rod 8 and the second hinge rod 9 are on the same straight line and are kept vertical. Furthermore, the connecting rod mechanism can provide a pressure maintaining function for the upper sizing template 3.

[0020] Meanwhile, in order to improve the transmission stability between the connecting rod mechanism on the frame 1 and the shaping upper template 3, two of the first hinge rod 8, the second hinge rod 9 and the third hinge rod 10 on the same side are arranged at intervals along the longitudinal direction. The front and rear ends of the first longitudinal pin 11 respectively penetrate and are hinged at the hinge joints of the second hinge rod 9 and the third hinge rod 10 of the front and rear pairs on the same side, and the front and rear ends of the second longitudinal pin 12 respectively penetrate and are hinged at the hinge joints of the two third hinge rods 10 and the driving seat 7 on the same side.

[0021] Furthermore, to ensure that the servo motor 5 can output sufficient torque to the multi-head lead screw 4, the output rotating shaft of the servo motor 5 is in transmission connection with the input end of the gearbox 13, and the output end of the gearbox 13 is in transmission connection with the upper end of the multi-head lead screw 4 through a coupling 14.

[0022] Moreover, in order to improve the up and down movement stability of the driving seat 7, a plurality of inner vertical guide rods 15 are vertically arranged on the frame 1 and penetrate through and are slidably fitted on the driving seat 7 through bushings.

[0023] The above embodiments are only one of the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A multi-head screw rod servo pressurization and pressure-holding structure for a shaping machine, comprising a frame (1), a shaping lower template (2) is arranged on the frame (1), and a shaping upper template (3) capable of moving up and down relative to the shaping lower template (2), a connecting rod mechanism is arranged between the shaping upper template (3) and the shaping lower template (2), and it is characterized in that: The frame (1) is rotatably connected vertically by bearings with a multi-headed lead screw (4). The upper end of the multi-headed lead screw (4) is in transmission connection with the output rotating shaft of a servo motor (5) fixed on the frame (1). A lead screw nut (6) fixed on a link mechanism is screwed on the multi-headed lead screw (4). The servo motor (5) drives the link mechanism to perform telescopic movement through the multi-headed lead screw (4) and the lead screw nut (6).

2. The multi-head lead screw servo boosting and pressure maintaining structure of a forming machine according to claim 1, characterized in that: The link mechanism includes a driving seat (7) and first hinge rods (8) hinged to the left and right side parts of the shaped upper template (3). Second hinge rods (9) corresponding to the first hinge rods (8) are hinged on the frame (1). The lower end of the second hinge rod (9) is hinged and matched with the upper end of the first hinge rod (8). The middle part of the second hinge rod (9) and the corresponding side part of the driving seat (7) are hinged and linked through a third hinge rod (10). The lead screw nut (6) is fixedly connected to the driving seat (7).

3. The multi-head screw rod servo supercharging and pressure maintaining structure of a forming machine according to claim 2, characterized in that: Two of the first hinge rods (8), second hinge rods (9) and third hinge rods (10) on the same side are arranged at intervals longitudinally. The front and rear ends of a longitudinal pin shaft one (11) respectively penetrate and are hinged at the hinge joints of the second hinge rods (9) and the third hinge rods (10) in the front and rear pairs on the same side. The front and rear ends of a longitudinal pin shaft two (12) respectively penetrate and are hinged at the hinge joints of the two third hinge rods (10) and the driving seat (7) on the same side.

4. A multi-head screw rod servo boosting and pressure maintaining structure of a forming machine according to claim 1, characterized in that: The output rotating shaft of the servo motor (5) is in transmission connection with the input end of a gearbox (13). The output end of the gearbox (13) is in transmission connection with the upper end of the multi-headed lead screw (4) through a coupling (14).

5. The multi-head screw rod servo supercharging and pressure maintaining structure of a forming machine according to claim 1, characterized in that: A plurality of inner vertical guide rods (15) vertically arranged on the frame (1) penetrate through and are slidably matched with the driving seat (7) through bushings.

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