WO2021063354A1 - Suspension type suction filtration forming method and suction filtration forming device for plant fiber molding forming - Google Patents

Abstract

A suspension type suction filtration forming method and suction filtration forming device (2) for plant fiber molding forming. The process of the suction filtration forming method is: 1) a suction filtration forming die (2.1) moves vertically downwards from a set height and enters into slurry in a slurry tank (1) to carry out suction filtration forming; 2) the suction filtration forming die (2.1) drives a wet blank to move vertically upwards to leave the liquid level of the slurry tank (1), and stops moving after rising to a certain height; (3) the wet blank in the suction filtration forming die (2.1) is sent out and delivered to the next procedure to undergo drying; and (4) step (1) and step (3) are repeated in cycles, so that plant fiber molding forming is continuously carried out.

Description

Suspended suction filtration molding method and suction filtration molding device for plant fiber molding Technical field

The invention relates to a method and a device for manufacturing plant fiber (plant fiber for short; the same hereinafter) products including pulp by molding and molding; it is suitable for manufacturing disposable flat or non-planar plant fiber molded products, and is especially suitable for one-time manufacturing Non-planar paper products; such as plant fiber tableware, plant fiber trays, plant fiber industrial products shock-proof pads and packaging trays or boxes, disposable non-planar plant fiber decorative three-dimensional wallboards (or plant fiber three-dimensional wallpaper Or paper pulp molded three-dimensional wallpaper), delicate small-angle plant fiber industrial packaging trays and packaging box products, starch and plant fiber mixture as raw materials, flat and three-dimensional products made by molding, or starch and plant fiber mixture as raw materials, molded The foamed flat and three-dimensional products made by the molding method, as well as all disposable plant fiber molded products, are collectively referred to as plant fiber molded products hereinafter.

Background technique

Existing plant fiber molding machine has several forms of suction and filtration forming device. One is that the suction and filtration forming mold is fixed, and the slurry tank moves up and down to drive the slurry and the suction and filtration forming mold to move relative to each other, and the suction and filtration forming mold enters The slurry is formed by suction filtration; another way is that the slurry tank is fixed, and the suction filtration forming mold moves up and down or flips into the slurry for suction filtration. The slurry is suction-filtered and molded in the suction-filtration molding mold in the suction-filtration molding device to form a wet body. There is a wet-body transfer device above the suction-filtration molding device. The wet-body transfer mold in the wet-body transfer device can move up and down. , The wet billet is removed from the suction and filtration forming mold and transferred to the next process for drying. The slurry tank is moved up and down or the wet billet transfer mold is moved up and down by the oil cylinder.

The existing suction filter molding device for molding plant fiber has the following problems.

1. The up and down movement of the wet billet transfer mold is driven by an oil cylinder. When the piston seal ring of the oil cylinder is worn, the oil cylinder will leak internally, causing the suction filter forming mold to slide out of control, and the wear of the piston seal ring in the working process is inevitable. Yes, so this has brought a lot of trouble to the production and the industry has not been able to solve it so far.

2. The wet billet transfer mold cannot be accurately closed with the suction filter forming mold, and the error of each mold closing is large, which often causes the wet billet to be torn, or the wet billet cannot be transferred to the suction filter forming mold for normal transfer.

3. When the wet blank transfer mold and the suction filter mold are closed, the impact is too large.

4. When the wet billet transfer mold transfers the wet billet to the hot press mold, the relative distance between the moisture absorption billet transfer mold and the hot press mold cannot be controlled due to the overshoot of the stroke, which causes the fibers around the wet billet when the wet billet is moved. Splashing out of the cavity of the hot pressing mold produces a lot of burrs. The fibers splashing on the hot pressing mold cannot be removed in time and become coke and contaminate the hot pressing mold.

5. When the oil cylinder pushes the wet billet transfer mold to move up and down, there is often a crawling phenomenon, and the movement often jitters and is very unstable. After the seal of the piston rod of the oil cylinder is damaged, the hydraulic oil in the oil cylinder often contaminates the slurry.

6. The moving speed of the wet blank transfer mold up and down is slow, and the vertical movement distance of the suction filter forming mold is often very long, which greatly affects the output.

Technical solutions

The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a suction filtration molding method and device that integrates suction filtration molding and wet blank transfer. In the suction filtration molding process, the method and the device can make the slurry more evenly distributed on the surface of the suction filtration molding mold, and the suction filtration molding mold can enter or remove the slurry accurately, smoothly and quickly.

The technical solution provided by the present invention is: a suspended suction filtration molding method for plant fiber molding; the process is: 1) The suction filtration molding mold moves vertically downward from a set height, and enters the slurry in the slurry tank for processing. Suction and filtration molding; 2) The suction and filtration forming mold moves up and away from the liquid level of the slurry tank with the wet blank, and stops moving when it rises to a certain height; 3) The wet blank in the suction and filtration forming mold is sent out for the next process Carry out drying treatment; 4) Step 1) and step 3) reciprocate, and the plant fiber molding is continuously performed.

The suction filtration forming mold is fixed at one end of the sliding column, or the suction filtration forming mold is fixed at one end of the sliding column through a suction forming mold mounting plate, and is positioned on the upper frame and can slide vertically up and down relative to the upper frame The sliding column drives the suction filter forming mold to move up and down linearly.

The sliding column is connected with the weight balance block of the suction filter mold through a weight balance connection line or chain that crosses the fixed pulley or the sprocket; the weight of the suction filter mold and the sliding column can be effectively balanced by the weight balance block of the suction filter mold , To realize the flexible up and down sliding of the suction filter forming mold, so as to realize the accurate and stable up and down movement or positioning of the suction filter forming mold.

Two or more suction filter mold linear guides are fixed on the sliding column, and the suction filter mold slider is fixed on the upper frame. The sliding column can be vertically mounted on the suction filter mold slider through the suction filter mold linear guide. Or, the sliding column is fixed with the suction filter mold slider, the suction filter mold linear guide is vertically fixed on the upper frame, and the sliding column can be vertically mounted on the suction filter mold linear guide through the suction filter mold slider. It slides straight up and down, so as to further realize the fast, accurate and stable linear movement of the suction filter forming mold up and down.

A rack is fixed on the sliding column, and a gear meshed with the rack and fixed on the upper frame drives the sliding column to move up and down linearly; or a lead screw is fixed on the sliding column to interact with the upper machine The servo motors fixed together on the frame drive the screw and nut pairs to drive the sliding column to move vertically up and down; or the synchronous belt is fixed on the sliding column and the servo motor fixed together with the upper frame through the drive motor The synchronous belt wheel on the shaft drives the sliding column to move vertically up and down.

The suction filter mold sliders are divided into two or more upper and lower groups. The two adjacent sets of suction filter mold sliders can be separated by a certain distance. The suction filter mold linear guide fixed on the sliding column can be in the upper and lower two groups. Or multiple sets of suction filter mold sliders fixed on the upper frame to slide up and down; or, two or more sets of upper and lower suction filter mold sliders fixed on the sliding column at a certain distance can be fixed on the upper frame The suction filter mold slides up and down on the linear guide rail.

The suspended suction filter molding device for plant fiber molding is characterized in that the suction filter molding device includes a suction filter molding mold, a sliding column positioned on the upper frame and sliding vertically up and down relative to the upper frame, and a driving suction device. A suction filter driving device that moves the filter forming mold up and down together with the sliding column.

The suction filtration forming mold is fixed at one end of the sliding column, or the suction filtration forming mold is fixed at one end of the sliding column through a suction forming mold mounting plate; the sliding column is straddled on a fixed pulley or sprocket or sprocket The weight balance connecting line or chain is connected with the weight balance block of the suction filter mold to effectively balance the weight of the suction filter molding mold and the sliding column through the suction filter mold weight balance block to realize the flexible up and down sliding of the suction filter mold. So as to realize the precise and stable up and down movement or positioning of the suction filter forming mold; or use a balance cylinder to balance the weight of the suction filter forming mold, the suction filter forming mold mounting plate and the sliding column, effectively reducing the servo motor load of the suction filter mold driving device .

The sliding column is also fixed with 2 or more suction filter mold linear guides, the suction filter mold slider is fixed on the upper frame, and the sliding column is vertical on the suction filter mold slider through the suction filter mold linear guide Slide up and down to realize the vertical linear movement of the sliding column; or, the sliding column is fixed with the suction filter mold slider, the suction filter mold linear guide is vertically fixed on the upper frame, and the sliding column passes through the suction filter mold. The slider slides vertically up and down on the linear guide rail of the suction filter mold, so as to accurately realize the up and down linear movement of the suction filter forming mold.

The driving device of the suction filter mold includes a rack fixed on the sliding column, a gear meshed with the rack, a drive gear and a servo motor fixed with the upper frame. The servo motor drives the rack and the slide through the driving gear. The column moves up and down together; or the suction filter mold drive device contains a screw nut sub mechanism and a drive screw nut sub mechanism and is fixed with the upper frame of the servo motor, which drives the sliding column by driving the screw nut pair transmission move up and down.

The suction filter mold sliders are divided into two or more upper and lower groups. The two adjacent suction filter mold sliders are separated by a distance. The suction filter mold linear guide fixed on the sliding column is in the upper and lower two or more groups. Slide up and down on the suction filter mold slider fixed on the upper frame; or, two or more sets of upper and lower suction filter mold sliders fixed on the sliding column at a certain distance can be fixed on the suction filter mold on the upper frame. Slide up and down on the linear guide.

The weight balance block of the suction filter mold can be positioned on the balance linear guide rail to move up and down, and the up and down movement of the weight balance block is carried out along the balance linear guide rail, thereby ensuring the up and down linear movement of the weight balance block and increasing the time when the weight balance block moves up and down. The stability.

The working principle of the present invention is: the suction filter molding mold is suspended and fixed on the sliding column, and the sliding column fixed with the linear guide rail of the suction filter mold slides on the suction filter mold slider fixed on the upper frame, so as to realize the suction filter molding mold. Accurate and stable up and down linear movement; or through the sliding column fixed to the suction filter mold slider to move up and down along the linear track fixed vertically on the upper frame to realize the up and down linear movement of the suction filter forming mold; a certain weight of suction filter The mold weight balance block overcomes the weight of the suction filter forming mold and its accessories; it not only ensures the guiding accuracy of the suction filter forming mold when moving up and down, but also ensures the free movement of the suction filter forming mold up and down, realizing rapid up and down movement, and also The suction and filtration forming mold can move up and down or position accurately and steadily. During the suction and filtration molding process, the suction and filtration molding die suspended on the slurry can be sucked and molded into the slurry with its molding side facing down for suction and filtration molding. The suction and filtration molding die can enter or remove the slurry accurately, smoothly, and quickly. It realizes that the slurry is more evenly distributed on the surface of the suction forming mold, which can greatly improve the output and quality of the product, and also solves the hidden danger of the wet blank being torn.

Beneficial effect

The suction filter forming mold driven by the sliding column moves up and down, and a certain weight of the suction filter mold weight balance block overcomes the weight of the suction filter forming mold and its accessories; the wet blank transfer method and the suction filter forming device of the present invention , Has the following beneficial effects: 1. In the process of suction filtration forming, the suction forming mold suspended on the slurry can be sucked into the slurry with the forming face down for suction filtration forming, and the suction forming mold can be precise, Smoothly and quickly enter or remove the slurry, which completely realizes a more even distribution of the slurry on the surface of the suction forming mold, which can greatly improve the quality of the product, and also solve the hidden danger of the wet blank being torn; 2. No need to use the wet blank The transfer mold transfers the wet blank from the suction molding mold, which can greatly shorten the entire molding cycle and increase the output.

Description of the drawings

Fig. 1 is a schematic structural diagram of a plant fiber molding machine including the suction filter molding device 2 of the present invention.

Figure 1.1 is a schematic structural diagram of a plant fiber molding machine containing the suction filter molding device 2 of the present invention. In this structure, a balance cylinder is used to balance the weight of the suction filter molding mold, the suction filter molding mold mounting plate and the sliding column .

Fig. 2 is a schematic structural view of a fully automatic double hot-pressing plant fiber molding machine including the suction filter molding device 2 of the present invention.

Figure 2.1 is a schematic diagram of the structure of a fully automatic single hot pressing plant fiber molding machine including the suction filter molding device 2 of the present invention.

Fig. 3 is a schematic diagram of an enlarged structure of the suction filtration forming device of the present invention.

Figure 3.1 is an enlarged schematic diagram of the sliding column of the suction filtration forming device of the present invention.

Figure 3.2 is a schematic cross-sectional view of the A-A direction of Figure 3.1.

Figure 3.3 is a schematic diagram of the enlarged structure of the suction filter forming device of the present invention; as shown in the figure, the sliding column 2.3 fixes the suction filter mold slider 2.5, and the suction filter mold linear guide 2.4 is vertically fixed on the upper frame 3, sliding The up and down linear movement of column 2.3.

Figure 3.4 is a schematic diagram of the enlarged structure of the suction forming mold in Figure 3.1.

Explanation of labels in the figure: 1-slurry tank; 2-suction filter molding device; 2.1-suction filter molding mold; 2.2-suction filter molding mold mounting plate; 2.3-sliding column; 2.4-suction filter mold linear guide; 2.5-suction filter Mould slide block; 2.6-suction filter mould weight balance block; 2.7-balance linear guide rail; 2.8-balance slide block; 2.9-weight balance connection line (or chain); 2.10-fixed pulley (or sprocket); 2.11-1- Rack; 2.11-2-Gear; 2.12-Servo motor; 2.13-Balanced cylinder; 3-Upper frame; 4-Lower frame; 5-Tie rod; 6.1-Left hot pressing setting device; 6.1a -Left hot pressing down Mold; 6.1b-left hot pressing upper mold; 6.2-right hot pressing setting device; 6.2a-right hot pressing lower mold; 6.2b-right hot pressing upper mold; A- suction forming surface of suction filter forming mold.

Detailed ways

The idea of the present invention is: after the suction and filtration forming mold is completed and the wet billet is formed, the wet billet is directly transferred to the hot pressing device. It avoids the clamping action of the wet blank transfer mold and the suction filter forming mold; eliminates the possibility of the wet blank being torn when the wet blank transfer mold is used to transfer the wet blank of the suction forming mold and the wet blank cannot be normally Handover phenomenon.

It will be further described below in conjunction with the embodiments shown in the drawings.

Example

As shown in Figure 1, the plant fiber molding machine includes a slurry tank 1, a suction filter molding device 2, and a frame. The slurry tank 1 is equipped with slurry, and the frame is composed of a tie rod 5, a lower frame 4 and an upper frame 3. The tie rod 5 fixes the upper frame 3 on the lower frame 4 so that the upper frame 3 and the lower frame 4 Keep a certain distance; the slurry tank 1 is set in the lower frame 4, the suction filter forming device 2 is above the slurry tank 1, and the suction filter forming mold 2.1 of the suction filter forming device 2 can move up and down vertically. The suction and filtration forming mold 2.1 is moved vertically down into the slurry in the slurry tank 1, and the suction filtration forming mold 2.1 vacuums the slurry in the slurry tank 1, and the suction filtration forming mold sucks the slurry in the slurry for a certain period of time. The wet green is in the suction filtration forming mold. The suction and filtration forming mold 2.1 moves up the wet billet vertically to leave the slurry tank and the slurry; after that, the wet billet in the suction and filtration forming mold 2.1 is sent out and enters the next process for drying treatment (sent to Hot-pressing and drying in the hot-pressing mold or being sent to the drying tunnel for heating and drying).

As shown in Figure 2, the fully automatic double-hot-pressing plant fiber molding machine containing the suction filtration forming device 2, and the suction filtration forming mold 2.1 of the suction filtration forming device 2 is moved vertically down to the pulp under the drive of the sliding column 2.3. In the slurry in tank 1, the slurry in the slurry tank 1 is sucked by the suction and filtration forming mold 2.1. After a certain thickness of wet billet is formed in the suction and filtration forming mold 2.1, the suction and filtration forming mold 2.1 takes the wet billet and moves along with the sliding column 2.3. Move straight up and leave the slurry tank and slurry, the wet greens move up to position with the suction filter forming mold, and then the left hot pressing lower mold 6.1a and the right hot pressing lower mold 6.2a alternately move horizontally to just below the suction filter forming mold 2.1 , The suction filter forming mold moves down to move the wet blank to the left hot press lower mold 6.1a (or right hot press lower mold 6.2a). After the wet blank transfer is completed, the suction filter mold rises; the left hot press lower mold (or right Hot pressing lower mold) with the wet blank level return to the left hot pressing upper mold 6.1b (or right hot pressing upper mold 6.2b directly below), the left hot pressing upper mold 6.1b goes down and the left hot pressing lower mold Clamping (or right hot pressing upper mold lowering and right hot pressing lower mold clamping), the wet blank is subjected to hot pressing, drying and shaping, and the dried product is sent out or enters the next process. The preparation of the wet billet and the transfer of the wet billet to the left hot-press lower mold 6.1a and the right hot-press lower mold 6.2a are all completed by the suction mold. It greatly reduces the structure and actions of the fully automatic double hot-pressing plant fiber molding machine, which can greatly improve the output and quality of products, and also solve the hidden danger of wet blanks being torn.

And because the suction and filtration forming mold 2.1 is moved vertically downwards into the slurry of the slurry tank 1 under the drive of the sliding column 2.3, the suction forming surface A of the suction filtration forming mold can enter the slurry in a downward attitude for suction filtration forming, complete After the suction filtration molding, the suction filtration molding mold can again be driven by the sliding column 2.3 to leave the liquid surface of the slurry quickly and vertically. Therefore, compared with the traditional suction filtration molding method, the present invention also has obvious advantages of uniform slurry suction, which also greatly improves the quality of the product.

As shown in Figure 2.1, the full-automatic single-hot-pressing plant fiber molding machine with the suction filter forming device 2 is compared with the above-mentioned full-automatic double-hot-pressing plant fiber molding machine. The molding machine only contains a hot pressing setting device. When the wet blank is formed, a hot pressing setting device is used to dry and shape the wet blank.

As shown in Figure 2 and Figure 2.1, when the suction filter forming mold moves down to move the wet green to the left hot pressing lower mold 6.1a (or right hot pressing lower mold 6.2a), the suction filter forming mold 2.1 moves down vertically Close the mold accurately with the left hot press lower mold 6.1a (or the right hot press lower mold 6.2a). When the mold is closed, the left hot press lower mold 6.1a (Or right hot pressing lower mold 6.2a) turn on the vacuum to generate negative pressure, suck up the wet blanks in the suction filter forming mold 2.1 and transfer the wet blanks to the left hot pressing lower mold 6.1a (or right hot pressing lower mold 6.2 a), then the suction and filtration forming mold 2.1 is moved up vertically. Since the wet billet has not yet been solidified, during the process of transferring the wet billet, if the suction filter forming mold 2.1 and the left hot press lower mold 6.1a (or the right hot press lower mold 6.2a) have low clamping accuracy or suction filter forming If the mold 2.1 moves up and down unstable, the wet billet is easily scratched or cracked; in addition, if the suction filter forming mold 2.1 cannot stably and accurately stay at a specified position in the vertical direction, then the suction filter forming mold 2.1 Move down and heat down the lower mold 6.1a on the left (Or right hot press lower mold 6.2a) The speed and position of mold clamping cannot be controlled, and the wet billet is easily scratched or cracked. Therefore, the suction filter forming mold 2.1 moves up and down to do the following points: 1. The suction filter forming mold 2.1 moves down vertically and the left hot press lower mold 6.1a (or the right hot press lower mold 6.2a) for accurate mold clamping; 2. The suction and filtration molding mold 2.1 must move up and down stably, the displacement must be accurate, and the speed must be switched smoothly; 3. The suction filtration molding mold 2.1 can stably and accurately stay at a specified position in the vertical direction. This requires a special mechanism (suction filter molding device) to achieve these requirements.

As shown in Figure 3 and Figure 3.1, the suction filtration forming device 2 includes a suction filtration forming mold 2.1, a suction filtration forming mold mounting plate 2.2, a spool 2.3, a suction filter that drives the suction filtration forming mold 2.1 and the spool 2.3 to move up and down Mold driving device 2.11.

As shown in Figure 1, Figure 2, and Figure 2.1, the sliding column 2.3 is positioned on the upper frame 3 and can slide vertically up and down relative to the upper frame 3. The suction filter forming mold 2.1 is fixed on the suction filter forming mold mounting plate On 2.2, the suction filter molding mold mounting plate 2.2 used to fix the suction filter molding mold 2.1 is fixed at one end of the spool 2.3, or the suction filter molding mold 2.1 can be directly fixed to one end of the spool 2.3, without the need for suction filtering. Mold mounting plate 2.2.

As shown in Figure 1, Figure 3, Figure 3.1, the sliding column 2.3 is equipped with a suction filter mold linear guide 2.4, and the suction filter mold slider 2.5 is fixed on the upper frame 3. The suction filter mold linear guide 2.4 is a linear guide, and the suction filter mold slider 2.5 and the suction filter mold linear guide 2.4 slide relatively linearly. The sliding column 2.3 relies on the suction filter mold linear guide 2.4 to move up and down linearly on the suction filter mold slider 2.5 fixed on the upper frame. The sliding column 2.3 with good guiding properties ensures the movement accuracy of the suction filter forming mold 2.1 when it moves up and down. Under the guidance and driving of the sliding column 2.3, the suction filter forming mold 2.1 can stably move up and down linearly; The up and down linear sliding between the mold linear guide 2.4 and the suction filter mold slider 2.5 reduces the frictional resistance of the suction filter forming mold 2.1 up and down movement, and provides the possibility for fast and stable up and down movement.

As shown in Figure 3.3, the linear movement between the suction filter mold slider 2.5 and the suction filter mold linear guide 2.4 is relative. It can be reversed, the suction filter mold linear guide 2.4 is fixed on the upper frame 3, and the suction filter mold slider 2.5 is installed on the sliding column 2.3, then the sliding column 2.3 can pass through the suction filter mold slider 2.5 along the suction filter mold linear guide 2.4 Perform up and down linear movement.

In order to increase the guiding effect and stability of the sliding column 2.3, as shown in Figure 3, Figure 3.1, and Figure 3.3, the suction filter mold slider 2.5 is divided into two upper and lower groups (or multiple groups), and the adjacent upper and lower suction The filter mold sliders 2.5 are separated by a certain distance, and the suction filter mold linear guide 2.4 fixed on the sliding column 2.3 can be carried out on the upper and lower two (or more) sets of fixed suction filter mold sliders 2.5 at a certain distance. Sliding up and down; or, two sets (or multiple sets) of suction filter mold slider 2.5 fixed on the sliding column 2.3 at a certain distance can slide up and down on the fixed suction filter mold linear guide 2.4, which is greatly Therefore, the guidance of the sliding column 2.3 is improved, so as to realize the smoothness of the up and down movement and the accuracy of the up and down positioning of the suction filter forming mold 2.1.

The suction filter molding mold 2.1 (or the suction filter molding mold mounting plate 2.2) and the sliding column 2.3 have a certain weight, and the gravity generated by this weight will cause the sliding column 2.3 and the suction filter molding mold 2.1 to slide down and become a suction filter The resistance of the forming mold 2.1 to move vertically upwards. In order to overcome this gravity, a suction filter mold weight balance 2.6 is specially set up. As shown in Figure 1, Figure 2, and Figure 3, a set of fixed pulley (or sprocket) 2.10 is set above the sliding column 2.3. The fixed pulley (or sprocket) 2.10 is rotatably fixed on the upper frame, and the sliding column 2.3 Located on the side below the fixed pulley (or sprocket) 2.10, there is a certain weight of the suction filter weight balance block 2.6 is located on the other side below the fixed pulley (or sprocket) 2.10, as shown in Figure 3, the weight balance connection The wire (or chain) 2.9 rides on the fixed pulley (or sprocket) 2.10 to connect the weight balance block of the suction filter mold 2.6 and the sliding column 2.3 together. The weight balance connecting wire 2.9 is a flexible cable, which can be Ropes, steel cables, chains, etc. In this way, the weight balance connecting line (or chain) 2.9 hangs the suction filter mold weight balance block 2.6 and the sliding column 2.3 on both sides of the fixed pulley (or sprocket) 2.10, and the suction filter mold weight balance block 2.6 passes through the fixed pulley. The weight balance connecting line (or chain) 2.9 of the pulley (or sprocket) 2.10 pulls the sliding column 2.3, thereby balancing the suction filter forming mold 2.1, the sliding column 2.3 and the suction filter forming mold through the gravity of the weight balance block 2.6 of the suction filter mold The gravity of the mounting plate 2.2; in this way, the sliding column 2.3 and the suction filter forming mold 2.1 can move up and down freely, which effectively increases the stability of the up and down movement of the sliding column 2.3 and the suction filter forming mold 2.1; the weight of the suction filter mold can be balanced. Effectively balance the weight of the suction filter forming mold 2.1 and the sliding post 2.3, which not only eliminates the risk of uncontrolled sliding of the suction filter forming mold 2.1, but also almost eliminates the gravity load when the suction filter forming mold 2.1 moves up and down. Weight balance connecting line (or chain) 2.9 and fixed pulley (or sprocket) 2.10 can use chain and sprocket respectively, or a rope or steel cable with a certain strength and matching fixed pulley. The suction filter mold weight balance block 2.6, balance linear guide 2.7, balance slide 2.8, weight balance connection line (or chain) 2.9, fixed pulley (or sprocket) 2.10 can be one group or multiple groups.

When the suction filter forming mold 2.1 goes down, the weight balance block 2.6 of the suction filter mold rises under the pull of the weight balance connecting line (or chain) 2.9; when the suction filter mold 2.1 goes up, the suction filter mold weight balance 2.6 rests on itself The gravity goes down.

As shown in Figure 1, Figure 3, Figure 3.1, and Figure 3.2, the up and down movement of the sliding column 2.3, which has been slid up and down and almost in a gravitational equilibrium state, is realized by the suction filter mold driving device 2.11; the suction filter mold The driving device 2.11 includes a rack 2.11-1, a gear 2.11-2, and a servo motor 2.12. A rack 2.11-1 is fixed on the sliding column 2.3, the gear 2.11-2 on the servo motor shaft meshes with the rack 2.11-1, and the gear 2.11-2 is driven by the servo motor. The rotation of the servo motor drives the rotation of the gear 2.11-2, which drives the rack 2.11-1 and the sliding column 2.3 to move up and down together; it can also be that the servo motor is driven by the screw nut pair to realize the sliding column 2.3 and the suction filter The forming mold 2.1 moves up and down together; it is also possible that the servo motor is driven by a timing belt to realize the sliding column 2.3 and the suction forming mold 2.1 to move up and down together.

Driven by the servo motor 2.12 and guided by the sliding column 2.3, the suction filter forming mold 2.1 can stably and accurately perform vertical up and down linear movement or stably and accurately stay at a specified vertical direction position.

As shown in Figure 3, in order to prevent the suction filter mold weight balance block 2.6 from swinging when it moves up and down, the suction filter mold weight balance block 2.6 can be positioned on the balance linear guide 2.7 to move up and down. The weight balance block 2.6 moves up and down. It is carried out along the balance linear guide 2.7, thereby ensuring the up and down linear movement of the weight balance weight 2.6 without swinging, and increases the stability of the weight balance weight 2.6 when moving up and down. Let the suction filter mold weight balance block 2.6 slide up and down along the balance linear guide 2.7, the suction filter mold weight balance block 2.6 is fixed with a balance slider 2.8, and the suction filter mold weight balance block 2.6 can be moved up and down through the balance slider 2.8. The balance linear guide 2.7 is installed to ensure the up and down linear movement of the suction filter mold weight balance block 2.6; the balance linear guide 2.7 is also a linear guide, and the balance slide 2.8 that slides relative to the balance linear guide 2.7 is a linear slide. It can also be that the 2.6 sets of weight balance blocks of the suction filter mold slide up and down on a linear track.

With the weight balance block 2.6 of the suction filter mold, driven by the servo motor 2.12 and guided by the sliding column 2.3, the vertical up and down movement of the suction filter mold 2.1 can be fast, stable and accurate in positioning, etc. Claim.

In addition, the balance cylinder can also be used to balance the gravity of the suction filter forming mold, the suction filter forming mold mounting plate and the sliding column; as shown in Figure 1.1, the balance cylinder 2.13 is fixed on the upper frame 3, and the piston rod of the balance cylinder 2.13 and The sliding columns 2.3 are connected together, and the pulling force of the balance cylinder 2.13 is matched with the weight of the suction filter forming mold, the suction filter forming mold mounting plate and the sliding column. The gravity of the suction filter forming mold 2.1, the sliding column 2.3 and the suction filter forming mold mounting plate 2.2 is balanced by the pulling force of the balancing cylinder 2.13.

Claims (10)

1. Suspended suction filtration molding method of plant fiber molding; its process is:

   1) The suction and filtration forming mold (2.1) moves vertically downward from the set height, and enters the slurry in the slurry tank (1) for suction filtration and forming;

   2) The suction and filtration forming mold (2.1) moves the wet green up vertically away from the liquid surface of the slurry tank, and stops moving when it rises to a certain height;

   3) The wet billet in the suction filter forming mold is sent out and delivered to the next process for drying treatment;

   4) Step 1) and step 3) reciprocate, and the plant fiber molding is continuously performed.
2. The suspended suction filtration molding method for plant fiber molding molding according to claim 1, characterized in that: the suction filtration molding mold (2.1) is fixed at one end of the sliding column (2.3), or the suction filtration molding mold (2.1) ) Is fixed to one end of the sliding column (2.3) through the suction filter forming mold mounting plate (2.2), and is driven by the sliding column (2.3) positioned on the upper frame 3 and capable of sliding vertically up and down relative to the upper frame (3) The suction filter forming mold (2.1) moves up and down linearly;

   The sliding column (2.3) is connected with the weight balance block (2.6) of the suction filter mold through the weight balance connection line (2.9) or chain that crosses the fixed pulley (2.10) or the sprocket; to pass the weight balance block of the suction filter mold Effectively balance the weight of the suction filter forming mold (2.1) and the sliding post (2.3), and realize the flexible up and down sliding of the suction filter forming mold, so as to realize the accurate and stable up and down movement or positioning of the suction filter forming mold.
3. The suspended suction filter molding method for molding plant fibers according to claim 2, characterized in that: the sliding column (2.3) is fixed with two or more suction filter mold linear guides (2.4), The suction filter mold slide block (2.5) is fixed on the upper frame (3), and the sliding column (2.3) can slide vertically on the suction filter mold slide block (2.5) through the suction filter mold linear guide (2.4); or , The sliding column (2.3) is fixed to the suction filter mold slider (2.5), the suction filter mold linear guide (2.4) is vertically fixed on the upper frame (3), and the sliding column (2.3) passes through the suction filter mold slider (2.5) It can slide vertically up and down on the suction filter mold linear guide (2.4), so as to further realize the rapid, accurate and stable linear movement of the suction filter mold (2.1) up and down.
4. The suspended suction filtration molding method of plant fiber molding molding according to claim 3, characterized in that: a rack is fixed on the sliding column (2.3), meshed with the rack and fixed to the upper frame ( 3) The gear drives the sliding column (2.3) to move vertically up and down; or the sliding column (2.3) is fixed with a screw, and the servo motor fixed with the upper frame (3) drives the screw nut The auxiliary drive drives the sliding column (2.3) to move vertically up and down; or the synchronous belt is fixed on the sliding column (2.3), and the servo motor fixed with the upper frame (3) through the drive motor shaft The synchronous belt wheel drives the sliding column (2.3) to move vertically up and down.
5. The suspended suction filter molding method for plant fiber molding molding according to claim 4, characterized in that: the suction filter mold slider (2.5) is divided into two or more upper and lower groups, and the upper and lower adjacent two groups of suction The filter mold sliders (2.5) can be separated by a certain distance, and the suction filter mold linear guide (2.4) fixed on the sliding column (2.3) can be fixed in two or more sets of suction filter mold sliders on the upper frame. (2.5) slide up and down; or, two or more sets of suction filter mold sliders (2.5) fixed on the sliding column (2.3) separated by a certain distance can be fixed on the linear guide rail of the suction filter mold on the upper frame (2.4) Slide up and down.
6. The suspended suction filter molding device for plant fiber molding is characterized in that the suction filter molding device (2) contains a suction filter molding mold (2.1), positioned on the upper frame (3) and relative to the upper frame (3). ) The sliding column (2.3) that slides vertically up and down, and the suction filter mold driving device (2.11) that drives the suction filter forming mold (2.1) and the sliding column (2.3) to move up and down together;

   The suction filter forming mold (2.1) is fixed at one end of the sliding column (2.3), or the suction filtering forming mold (2.1) is fixed at one end of the sliding column (2.3) through the suction forming mold mounting plate (2.2); The column (2.3) is connected to the weight balance block (2.6) of the suction filter mold through the weight balance connecting line 2.9 or the chain that rides on the fixed pulley (2.10) or sprocket, so as to effectively pass the weight balance block of the suction filter mold. Balance the weight of the suction filter forming mold (2.1) and the sliding post (2.3) to realize the flexible up and down sliding of the suction filter forming mold, so as to realize the accurate and stable up and down movement or positioning of the suction filter forming mold; or use a balanced cylinder (2.13) To balance the weight of the suction filter forming mold, the mounting plate of the suction filter forming mold and the sliding column, effectively reducing the servo motor load of the suction filter mold driving device (2.11).
7. The suspended suction filter molding device for molding plant fiber according to claim 6, characterized in that: the sliding column (2.3) is also fixed with 2 or more suction filter mold linear guides (2.4), The suction filter mold slide block (2.5) is fixed on the upper frame (3), and the sliding column (2.3) slides vertically up and down on the suction filter mold slide block (2.5) through the suction filter mold linear guide (2.4) to achieve The sliding column (2.3) moves up and down linearly in the vertical direction; or, the sliding column (2.3) is fixed to the suction filter mold slider (2.5), and the suction filter mold linear guide (2.4) is vertically fixed on the upper frame ( 3) Up, the sliding column (2.3) slides vertically up and down on the suction filter mold linear guide (2.4) through the suction filter mold slider (2.5), so as to accurately realize the up and down linear movement of the suction filter mold (2.1).
8. The suspended suction filter molding device for molding plant fibers according to claim 7, characterized in that: the suction filter mold driving device (2.11) comprises a rack (2.11-1) fixed on a sliding column (2.3) ), the gear (2.11-2) meshing with the rack (2.11-1), the drive gear (2.11-2) and the servo motor fixed with the upper frame (3), the servo motor passes through the drive gear (2.11- 2) Thereby driving the rack (2.11-1) and the sliding column (2.3) to move up and down together; or the suction filter mold driving device (2.11) contains a screw nut sub mechanism and a driving screw nut sub mechanism and is connected with the upper frame (3) The servo motors fixed together drive the sliding column (2.3) to move up and down through the drive of the screw nut pair.
9. The suspended suction filter molding device molded by plant fiber according to claim 8, characterized in that: the suction filter mold slider (2.5) is divided into two or more upper and lower groups, and two adjacent suction The distance between the filter mold sliders (2.5), the suction filter mold linear guide (2.4) fixed on the sliding column (2.3) is two or more sets of suction filter mold sliders (2.5) fixed on the upper frame Slide up and down; or, two or more sets of suction filter mold sliders (2.5) fixed on the sliding column (2.3) separated by a certain distance can be fixed on the linear guide rail (2.4) of the suction filter mold on the upper frame Swipe up and down.
10. The suspended suction filter molding device molded by plant fiber according to claim 9, characterized in that: the weight balance block (2.6) of the suction filter mold is positioned on the balance linear guide (2.7) so as to move up and down, and the weight The up and down movement of the weight balance (2.6) is carried out along the balance linear guide (2.7), thereby ensuring the up and down linear movement of the weight balance (2.6), and increases the stability of the weight balance (2.6) when it moves up and down.