Positive and negative pressure separation gas circuit of paper tray overturning forming machine

Abstract

A positive and negative pressure separation gas circuit of a paper tray overturning forming machine comprises an overturning support assembly and an adsorption plate installed on the overturning support assembly, a negative pressure gas circuit assembly is arranged on the overturning support assembly, a positive pressure gas circuit assembly is arranged on the negative pressure gas circuit assembly, a negative pressure gas circuit is arranged in the negative pressure gas circuit assembly, and a negative pressure gas circuit is arranged in the negative pressure gas circuit assembly. A positive pressure gas circuit is arranged in the positive pressure gas circuit assembly, the negative pressure gas circuit and the positive pressure gas circuit are separated from each other, an adsorption part is arranged on the adsorption plate, the negative pressure gas circuit and the positive pressure gas circuit are respectively communicated with the adsorption part, the negative pressure gas circuit sucks paper pulp through the adsorption part when sucking gas, and the positive pressure gas circuit blows gas through the adsorption part when blowing gas. According to the positive and negative pressure separation gas circuit, the negative pressure gas circuit and the positive pressure gas circuit are separated from each other and are not communicated with each other, so that when the adsorption part sucks paper pulp, liquid only enters the negative pressure gas circuit, the positive pressure gas circuit does not suck the liquid all the time, it is guaranteed that no liquid is blown to a paper support finished product during blowing demolding, and the dehydration efficiency of the paper support subsequent procedure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper tray production, in particular to a positive and negative pressure separation gas path of a paper tray turnover forming machine. Background Art

[0002] Chinese patent document No. CN212223463U disclosed on December 25, 2020 a flipping mechanism of a paper tray forming machine, including a power device and a rotating bracket, the lower template is arranged on the rotating bracket, and the power device drives the rotating bracket to rotate relative to the machine tool frame; it is characterized in that: the power device is a servo motor; the rotating bracket includes a rotating shaft and a flipping frame, the flipping frame is arranged on the rotating shaft and rotates relative to the machine tool frame around the axis of the rotating shaft, and the lower template is arranged on the flipping frame; the motor shaft of the servo motor is connected to the rotating shaft to drive the lower template to flip. The flipping mechanism of this paper tray forming machine is connected to the negative pressure suction device through a conveying pipe, and an air flow channel is arranged in the rotating shaft. The air flow channel connects the conveying pipe and the lower template. When the negative pressure suction device inhales air, the pulp in the pulp barrel is sucked through the lower template. In addition, for general paper tray forming machines, the air flow channel is also connected to the positive pressure blowing device. After the product is formed, air is blown onto the lower template through the positive pressure blowing device to demould the product. However, the suction and blowing share the same air flow channel. When the lower template absorbs the pulp in the pulp barrel, liquid may be sucked into the air flow channel. In this way, when the positive pressure blowing device blows air onto the lower template, the liquid in the air flow channel may be blown onto the formed product, which will reduce the dehydration efficiency of the post-process of the paper tray.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of the utility model is to provide a positive and negative pressure separation gas path of a paper tray turnover forming machine with simple structure, good adsorption effect, improved dehydration efficiency of the subsequent process, good product quality and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A positive and negative pressure separation air circuit of a paper tray flip forming machine designed for this purpose comprises a flip bracket assembly and an adsorption plate installed on the flip bracket assembly, characterized in that: a negative pressure air circuit assembly is arranged on the flip bracket assembly, a positive pressure air circuit assembly is arranged on the negative pressure air circuit assembly, a negative pressure air circuit is arranged in the negative pressure air circuit assembly, a positive pressure air circuit is arranged in the positive pressure air circuit assembly, the negative pressure air circuit and the positive pressure air circuit are arranged separately from each other, an adsorption part is arranged on the adsorption plate, the negative pressure air circuit and the positive pressure air circuit are connected to the adsorption part respectively, the negative pressure air circuit absorbs paper pulp through the adsorption part when inhaling air, and blows out gas through the adsorption part when the positive pressure air circuit blows air.

[0006] The adsorption part includes a plurality of adsorption holes for adsorbing pulp and blowing out gas.

[0007] Adsorption ends are respectively provided on both sides of the flip bracket assembly, and adsorption plates are provided on the adsorption ends. Correspondingly, negative pressure air path assemblies are respectively provided on both sides of the flip bracket assembly, and slurry suction stations and paper support forming stations are respectively provided on both sides of the flip bracket assembly. When the flip bracket assembly is flipped, the adsorption plate switches between the slurry suction station and the paper support forming station.

[0008] The negative pressure air circuit includes a negative pressure main air circuit, a negative pressure converging air circuit and a negative pressure branch air circuit. An air outlet and an air intake port are arranged on the negative pressure air circuit component. One end of the negative pressure main air circuit is connected to the air outlet, and the other end is connected to the negative pressure converging air circuit. The negative pressure branch air circuits are respectively arranged on both sides of the negative pressure converging air circuit. The air intake port is laterally distributed on the negative pressure branch air circuit, and the negative pressure branch air circuits are respectively connected to the negative pressure converging air circuit and the air intake port, and the air intake port is connected to the adsorption hole.

[0009] A baffle for blocking paper pulp is arranged on the air intake port.

[0010] The positive-pressure air circuit includes a positive-pressure air inlet circuit, a positive-pressure intermediate air circuit and a positive-pressure air outlet circuit. The positive-pressure air inlet circuit is located inside the negative-pressure main air circuit and are not connected to each other. One end of the positive-pressure intermediate air circuit extends into the negative-pressure main air circuit and is connected to the positive-pressure air inlet circuit. The other end of the positive-pressure intermediate air circuit is connected to the positive-pressure air outlet circuit. An air inlet and an air blowing port are provided on the positive-pressure air circuit assembly. The air blowing ports are laterally distributed on the positive-pressure air outlet circuit. The air inlet is connected to the positive-pressure air inlet circuit, and the air blowing ports are respectively connected to the positive-pressure air outlet circuit and the adsorption holes.

[0011] The flip bracket assembly includes a flip bracket and a flip template. The flip templates are respectively arranged on both sides of the flip bracket. The adsorption end is arranged on the flip template. The adsorption end is recessed to form an adsorption cavity between the adsorption end and the adsorption plate. The air suction port and the air blowing port are located in the adsorption cavity. The air suction port and the air blowing port are respectively connected to the adsorption hole through the adsorption cavity.

[0012] The paper tray flip forming machine includes a driving component, a transmission component and a flip shaft. The driving component drives the transmission component, the transmission component is connected to the flip shaft, the flip bracket is mounted on the flip shaft, and the driving component drives the flip shaft to rotate through the transmission component, so that the flip shaft drives the flip bracket assembly to flip.

[0013] A partition is arranged inside the flip shaft, and the negative pressure main air paths of the two negative pressure air path components are arranged on both sides of the flip shaft and separated by the partition.

[0014] The two negative pressure air circuit components are staggered with each other, and the two positive pressure air circuit components are staggered with each other.

[0015] The utility model arranges a positive-pressure air circuit component on a negative-pressure air circuit component, arranges a negative-pressure air circuit in the negative-pressure air circuit component, and arranges a positive-pressure air circuit in the positive-pressure air circuit component, and the negative-pressure air circuit and the positive-pressure air circuit are arranged separately from each other and are not connected to each other. In this way, when the adsorption part absorbs paper pulp, liquid will only enter the negative-pressure air circuit, and the positive-pressure air circuit will never absorb liquid, thereby ensuring that no liquid will be blown onto the finished paper tray during air blowing and demoulding, thereby improving the dehydration efficiency of the subsequent process of the paper tray; in addition, the adsorption part includes a plurality of adsorption holes for absorbing paper pulp and blowing out gas. Using a plurality of adsorption holes to adsorb paper pulp can improve the adsorption effect on paper pulp and make the adsorption more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the positive and negative pressure separation gas path in one embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the positive and negative pressure separation gas circuit in one embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the exploded structure of the positive and negative pressure separation gas circuit in one embodiment of the utility model.

[0019] Figure 4 It is a cross-sectional view of another aspect of the positive and negative pressure separation gas path in one embodiment of the utility model.

[0020] Figure 5 The figure is a schematic diagram of the assembly structure of the negative pressure air circuit component and the flip bracket in one embodiment of the utility model.

[0021] Figure 6 It is a schematic diagram of the overall structure of a positive pressure air circuit assembly in one embodiment of the utility model.

[0022] Figure 7 It is a schematic diagram of the overall structure of a negative pressure air circuit assembly in one embodiment of the utility model.

[0023] Figure 8 This is a partial structural exploded view of a negative pressure air circuit assembly in one embodiment of the present invention. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 8The positive and negative pressure separation air circuit of the paper tray flip forming machine includes a flip bracket assembly 1 and an adsorption plate 2 installed on the flip bracket assembly 1, a negative pressure air circuit assembly 3 is arranged on the flip bracket assembly 1, a positive pressure air circuit assembly 4 is arranged on the negative pressure air circuit assembly 3, a negative pressure air circuit is arranged in the negative pressure air circuit assembly 3, and a positive pressure air circuit is arranged in the positive pressure air circuit assembly 4, the negative pressure air circuit and the positive pressure air circuit are separated from each other and are not connected to each other, an adsorption part is arranged on the adsorption plate 2, the negative pressure air circuit and the positive pressure air circuit are connected to the adsorption part respectively, the negative pressure air circuit absorbs paper pulp through the adsorption part when suctioning, and blows out gas through the adsorption part when the positive pressure air circuit blows air, so as to demold the molded product on the adsorption plate 2; the adsorption plate 2 is an aluminum plate, which is used as a lower template.

[0026] The adsorption part includes a plurality of adsorption holes 5 for absorbing pulp and blowing out gas, and the adsorption holes 5 are arranged in a plurality of groups.

[0027] Adsorption ends 21 are respectively provided on the upper and lower sides of the flip bracket assembly 1, and the adsorption plate 2 is provided on the adsorption end 21. Correspondingly, negative pressure air circuit assemblies 3 are respectively provided on the upper and lower sides of the flip bracket assembly 1, that is, two negative pressure air circuit assemblies 3 and two positive pressure air circuit assemblies 4 are respectively provided. A slurry suction station 6 and a paper support forming station 7 are respectively provided on the upper and lower sides of the flip bracket assembly 1. When the flip bracket assembly 1 is flipped, the adsorption plate 2 switches between the slurry suction station 6 and the paper support forming station 7; a pulp barrel (not shown in the figure) is provided on the slurry suction station 6, and when the adsorption plate 2 is flipped to the slurry suction station 6, the adsorption plate 2 absorbs the pulp in the pulp barrel, and an upper template (not shown in the figure) is provided on the paper support forming station 7, and when the adsorption plate 2 is flipped to the paper support forming station 7, the upper template and the adsorption plate 2 are molded to form a product; by adopting the above-mentioned double-station structure, pulp suction and product forming can be carried out simultaneously, thereby improving production efficiency.

[0028] The negative pressure air circuit includes a negative pressure main air circuit 8, a negative pressure merging air circuit 9 and a negative pressure branch air circuit 10. An air outlet 11 and an air intake 12 are arranged on the negative pressure air circuit assembly 3. The air outlet 11 is connected to a negative pressure suction device (such as an air pump). One end of the negative pressure main air circuit 8 is connected to the air outlet 11, and the other end is connected to the negative pressure merging air circuit 9. The negative pressure branch air circuits 10 are respectively arranged on both sides of the negative pressure merging air circuit 9. The air intake 12 is laterally distributed on the negative pressure branch air circuits 10, and the negative pressure branch air circuits 10 are respectively connected to the negative pressure merging air circuit 9 and the air intake 12, and the air intake 12 is connected to the adsorption hole 5; two negative pressure merging air circuits 9 are arranged, and multiple air intakes 12 are arranged on the negative pressure merging air circuit 9, which also makes the pulp adsorption more uniform.

[0029] The negative pressure air circuit assembly 3 includes a negative pressure main pipeline 26, a negative pressure merging pipeline 27 and a negative pressure air distribution pipeline 29. One end of the negative pressure main pipeline 26 is connected to the air outlet 11, and the other end is connected to the negative pressure merging pipeline 27. The negative pressure air distribution pipeline 29 is respectively connected to the two sides of the negative pressure merging pipeline 27. The negative pressure air distribution pipeline 29 is connected to the air intake port 12. The negative pressure main air circuit 8 is arranged in the negative pressure main pipeline 26, the negative pressure merging air circuit 9 is arranged in the negative pressure merging pipeline 27, and the negative pressure air distribution pipeline 10 is arranged in the negative pressure air distribution pipeline 29.

[0030] A baffle 13 for blocking pulp is arranged on the air suction port 12. When the adsorption plate 2 absorbs pulp, the baffle 13 can block the pulp to prevent the pulp from entering the negative pressure air path.

[0031] The positive-pressure air circuit includes a positive-pressure air inlet circuit 14, a positive-pressure intermediate air circuit 15 and a positive-pressure air outlet circuit 16. The positive-pressure air inlet circuit 14 is located inside the negative-pressure main air circuit 8 and are not connected to each other. One end of the positive-pressure intermediate air circuit 15 extends into the negative-pressure main air circuit 8 and is connected to the positive-pressure air inlet circuit 14. The other end of the positive-pressure intermediate air circuit 15 is connected to the positive-pressure air outlet circuit 16. An air inlet 17 and an air blowing port 18 are provided on the positive-pressure air circuit assembly 4. The air inlet 17 is connected to a blowing device (such as an air pump), and the air blowing port 18 is laterally distributed on the positive-pressure air outlet circuit 16. The air inlet 17 is connected to the positive-pressure air inlet circuit 14, and the air blowing port 18 is respectively connected to the positive-pressure air outlet circuit 16 and the adsorption hole 5.

[0032] The positive pressure air circuit assembly 4 includes a positive pressure air inlet pipe 30, a positive pressure intermediate pipe 31 and a positive pressure air outlet pipe 32. One end of the positive pressure intermediate pipe 31 is connected to the positive pressure air inlet pipe 30, and the other end is connected to the positive pressure air outlet pipe 32. The positive pressure air inlet pipe 30 and the positive pressure air outlet pipe 32 are respectively located on both sides of the positive pressure intermediate pipe 31. The positive pressure intermediate pipe 31 is respectively bent with the positive pressure air inlet pipe 30 and the positive pressure air outlet pipe 32. The positive pressure air inlet air circuit 14 is located in the positive pressure air inlet pipe 30, the positive pressure intermediate air circuit 15 is located in the positive pressure intermediate pipe 31, and the positive pressure air outlet air circuit 14 is located in the positive pressure air inlet pipe 30. 6 is located in the positive pressure outlet pipe 32; the positive pressure inlet pipe 30 is arranged in the negative pressure main pipe 26, one end of the positive pressure inlet pipe 30 extends out of the negative pressure main pipe 26 to connect to the air inlet 17, one end of the positive pressure intermediate pipe 31 extends into the negative pressure main pipe 26, and the other end is located outside the negative pressure main pipe 26, and the positive pressure outlet pipe 32 is located between the two negative pressure gas separation pipes 29; in the above structure, the positive pressure gas circuit component 4 is partially arranged in the negative pressure gas circuit component 3, which can reduce the occupied space of the negative pressure gas circuit and the positive pressure gas circuit, making the overall structure of the positive and negative pressure separation gas circuits more compact.

[0033] A three-way air outlet joint 33 is horizontally distributed on the positive pressure air outlet pipe 32, one end of the three-way air outlet joint 33 is connected to the positive pressure air outlet pipe 32, and the blowing port 18 is respectively arranged at the other two ends of the three-way air outlet joint 33. This structure makes the gas blown out of the positive pressure air circuit more uniform.

[0034] The flip bracket assembly 1 includes a flip bracket 19 and a flip template 20, the flip template 20 is respectively arranged on the upper and lower sides of the flip bracket 19, the adsorption end 21 is arranged on the flip template 20, the adsorption end 21 is recessed so that an adsorption cavity 22 is formed between the adsorption end 21 and the adsorption plate 2, the air suction port 12 and the air blowing port 18 are located in the adsorption cavity 22, the air suction port 12 and the air blowing port 18 are respectively connected to the adsorption hole 5 through the adsorption cavity 22; this structure makes the gas blown out of the air blowing port 18 concentrated in the adsorption cavity 22, and then makes the blown gas flow to the adsorption hole 5, thereby improving the product demolding effect.

[0035] The paper tray flip forming machine includes a driving component (not shown in the figure), a transmission component 23 and a flip shaft 24. The driving component drives the transmission component 23, and the transmission component 23 is connected to the flip shaft 24. The flip bracket 19 is mounted on the flip shaft 24. The driving component drives the flip shaft 24 to rotate through the transmission component 23, so that the flip shaft 24 drives the flip bracket assembly 1 to flip. The driving component is a servo motor and a gearbox, and the transmission component 23 is a driving gear and a driven gear. For the specific connection structure, please refer to patent CN212223463U.

[0036] A partition 25 is arranged inside the flip shaft 24 , and the negative pressure main air paths 8 of the two negative pressure air path assemblies 3 are respectively arranged on both sides inside the flip shaft 24 and separated by the partition 25 ; the two ends of the flip shaft 24 are respectively the negative pressure main pipes 26 of the two negative pressure air path assemblies 3 .

[0037] The two negative pressure air circuit components 3 are staggered with each other left and right, and the two positive pressure air circuit components 4 are staggered with each other left and right. This structure can make full use of the space of the flip bracket component 1, and also makes the overall structure of the positive and negative pressure separation air circuit more compact.

[0038] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A positive and negative pressure separation gas path of a paper tray flip forming machine, comprising a flip bracket assembly (1) and an adsorption plate (2) mounted on the flip bracket assembly (1), characterized in that: A negative pressure air circuit component (3) is arranged on the flip support component (1), a positive pressure air circuit component (4) is arranged on the negative pressure air circuit component (3), a negative pressure air circuit is arranged inside the negative pressure air circuit component (3), a positive pressure air circuit is arranged inside the positive pressure air circuit component (4), the negative pressure air circuit and the positive pressure air circuit are arranged separately from each other, an adsorption part is arranged on the adsorption plate (2), the negative pressure air circuit and the positive pressure air circuit are respectively connected to the adsorption part, the negative pressure air circuit absorbs paper pulp through the adsorption part when suctioning, and the positive pressure air circuit blows out gas through the adsorption part when blowing.

2. The positive and negative pressure separation gas path of the paper tray turning and forming machine according to claim 1 is characterized by: The adsorption part comprises a plurality of adsorption holes (5) for absorbing pulp and blowing out gas.

3. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 1 is characterized in that: Adsorption ends (21) are respectively arranged on both sides of the flip bracket assembly (1), and the adsorption plate (2) is arranged on the adsorption end (21). Correspondingly, the negative pressure air path assembly (3) is respectively arranged on both sides of the flip bracket assembly (1), and the slurry absorption station (6) and the paper support forming station (7) are respectively arranged on both sides of the flip bracket assembly (1). When the flip bracket assembly (1) is flipped, the adsorption plate (2) switches between the slurry absorption station (6) and the paper support forming station (7).

4. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 2 is characterized in that: The negative pressure gas circuit comprises a negative pressure main gas circuit (8), a negative pressure merging gas circuit (9) and a negative pressure branch gas circuit (10); an air outlet (11) and an air intake (12) are provided on the negative pressure gas circuit assembly (3); one end of the negative pressure main gas circuit (8) is connected to the air outlet (11) and the other end is connected to the negative pressure merging gas circuit (9); the negative pressure branch gas circuits (10) are respectively arranged on both sides of the negative pressure merging gas circuit (9); the air intake (12) is laterally distributed on the negative pressure branch gas circuit (10); and the negative pressure branch gas circuits (10) are respectively connected to the negative pressure merging gas circuit (9) and the air intake (12); and the air intake (12) is connected to the adsorption hole (5).

5. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 4 is characterized in that: A baffle (13) for blocking paper pulp is provided on the air intake port (12).

6. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 4 is characterized in that: The positive pressure air circuit comprises a positive pressure air inlet circuit (14), a positive pressure intermediate air circuit (15) and a positive pressure air outlet circuit (16); the positive pressure air inlet circuit (14) is located inside the negative pressure main air circuit (8) and are not connected to each other; one end of the positive pressure intermediate air circuit (15) extends into the negative pressure main air circuit (8) and is connected to the positive pressure air inlet circuit (14); the other end of the positive pressure intermediate air circuit (15) is connected to the positive pressure air outlet circuit (16); an air inlet (17) and an air blowing port (18) are provided on the positive pressure air circuit assembly (4); the air blowing port (18) is laterally distributed on the positive pressure air outlet circuit (16); the air inlet (17) is connected to the positive pressure air inlet circuit (14), and the air blowing port (18) is respectively connected to the positive pressure air outlet circuit (16) and the adsorption hole (5).

7. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 6 is characterized in that: The flip bracket assembly (1) comprises a flip bracket (19) and a flip template (20), wherein the flip templates (20) are respectively arranged on both sides of the flip bracket (19), the adsorption end (21) is arranged on the flip template (20), the adsorption end (21) is arranged in a recessed manner so that an adsorption cavity (22) is formed between the adsorption end (21) and the adsorption plate (2), the air suction port (12) and the air blowing port (18) are located in the adsorption cavity (22), and the air suction port (12) and the air blowing port (18) are respectively connected to the adsorption hole (5) through the adsorption cavity (22).

8. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 7 is characterized in that: The paper tray flip forming machine comprises a driving component, a transmission component (23) and a flip shaft (24); the driving component is connected to the transmission component (23); the transmission component (23) is connected to the flip shaft (24); a flip bracket (19) is sleeved on the flip shaft (24); the driving component drives the flip shaft (24) to rotate through the transmission component (23), so that the flip shaft (24) drives the flip bracket assembly (1) to flip.

9. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 8, characterized in that: A partition (25) is arranged inside the flip shaft (24), and the negative pressure main gas paths (8) of the two negative pressure gas path assemblies (3) are respectively arranged on two sides inside the flip shaft (24) and separated by the partition (25).

10. The positive and negative pressure separation gas circuit of the paper tray turning and forming machine according to claim 3, characterized in that: The two negative pressure air circuit components (3) are arranged in a staggered manner, and the two positive pressure air circuit components (4) are arranged in a staggered manner.

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