A mould for profiled products with pulp flush

Abstract

The utility model discloses a kind of with flush paper pulp product compression mould, install in pulp tank, including upper die, lower die and flush component, the upper die is fixedly arranged in the top of pulp tank, the lower die is slidably installed below the upper die by hydraulic system, the top of lower die is provided with containing groove, waterway is provided below the containing groove in lower die, the inner side wall of containing groove is provided with through hole communicated with waterway at intervals, net mould is also fixedly arranged in containing groove, the bottom of lower die is provided with negative pressure component communicated with waterway, the flush component includes the horizontal bar of slidingly being arranged in the top of lower die by displacement component, multiple spray heads are arranged at intervals in the side of horizontal bar, the outer side wall of horizontal bar is also provided with adjusting component of adjusting spray head installation angle. Through the above-mentioned setting, high-pressure fluid can be evenly flushed net mould, and then effectively clean the fiber of jammed net mould.

Description

Technical Field

[0001] This utility model belongs to the field of pulp molding technology, specifically relating to a pulp product pressing mold with rinsing function. Background Technology

[0002] Pulp molding is a papermaking technology that involves crushing and refining raw materials such as virgin pulp, paperboard, waste paper, and cardboard boxes to produce pulp. A mold is then immersed in a pulp bath, and the pulp is retrieved. A wet preform is formed on the mold using a vacuum suction method. Finally, the wet preform is removed and dry-pressed to produce finished products such as egg trays and cup holders. During vacuum suction, some fibers in the pulp tend to adhere to the die's mesh. If not cleaned promptly, this can clog the die, negatively impacting the molding quality of the pulp products.

[0003] Chinese patent CN214737014U discloses a novel self-cleaning mold for paper-plastic products. The design includes a base, with a mold body embedded in its upper surface. A through hole is formed at the bottom of the mold body, and a collection chamber is formed inside the lower end of the base. Fans are fixedly connected to both ends of the base, and the output ends of the fans are connected to a connecting pipe located inside the base. This design utilizes the fans to expel air from the collection chamber through the through hole, thereby cleaning foreign objects from the through hole.

[0004] When the above solution uses a fan to blow air out of the collection chamber, the air tends to flow out through the unblocked through holes, resulting in a small amount of air pressure applied to the debris blocking the through holes and a poor cleaning effect. Utility Model Content

[0005] The present invention aims to provide a molding die for pulp products with a rinsing function to solve the problem of poor cleaning effect in the above solutions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A pulp forming mold with rinsing function is installed in a pulp tank and includes an upper mold, a lower mold, and a rinsing assembly. The upper mold is fixedly installed at the top of the pulp tank, and the lower mold is slidably installed below the upper mold via a hydraulic system. The top of the lower mold has a receiving groove, and a water channel is provided below the receiving groove inside the lower mold. The inner sidewall of the receiving groove has through holes at intervals that communicate with the water channel. A screen is also fixedly installed inside the receiving groove. The bottom of the lower mold has a negative pressure assembly that communicates with the water channel. The rinsing assembly includes a crossbar slidably installed at the top of the lower mold via a displacement assembly. Multiple nozzles are spaced apart on one side of the crossbar, and an adjustment assembly for adjusting the installation angle of the nozzles is provided on the outer sidewall of the crossbar.

[0007] The principle and effects of this technical solution: In its initial state, the rinsing assembly is located outside the vertical projection of the upper mold. In use, the lower mold is submerged into the pulp tank using a hydraulic system and then retrieved. The water in the receiving tank is sucked out through the through holes and water channels by the negative pressure assembly. The fibers in the receiving tank adhere to the screen mold to form a wet paper preform. The lower mold is then raised to clamp and shape the wet paper preform between the upper and lower molds. After shaping, the lower mold is lowered. Some fibers may become stuck in the mesh of the screen mold. At this time, the displacement assembly is driven to move the crossbar back and forth once, and the nozzle sprays high-pressure fluid onto the screen mold. The fluid flushes the fibers stuck in the mesh into the gap between the screen mold and the receiving tank. When the negative pressure assembly is used for vacuum pulp suction next time, the fibers in the gap between the screen mold and the receiving tank are discharged. Because the diameter of the through holes and water channels is relatively large, the fibers are difficult to adhere to the inner wall of the through holes and water channels.

[0008] By using the above setup, multiple nozzles are installed on one side of the crossbar, and the crossbar moves back and forth on the top of the lower mold, high-pressure fluid can be used to evenly flush the screen mold, thereby effectively cleaning the fibers clogging the screen mold. At the same time, it is convenient to transfer the cleaned fibers, which solves the problem of poor cleaning effect in the above solutions.

[0009] In this utility model, racks are fixedly provided on both sides of the top of the lower mold. The displacement component includes a rotating shaft symmetrically inserted into both sides of the crossbar, a waterproof motor fixedly provided in the crossbar and connected to the two rotating shafts for transmission, and gears fixedly sleeved on the outside of the crossbar at the ends of the rotating shafts and meshing with the corresponding racks.

[0010] In this utility model, rollers are rotatably provided on both sides of the bottom of the crossbar, a limiting groove is provided on the top of the lower mold between the receiving groove and the rack, and a protrusion that is slidably inserted into the limiting groove is fixedly provided on the bottom of the crossbar.

[0011] In this utility model, the vertical cross-section of the limiting groove is T-shaped, and both sides of the protrusion are rotatably provided with rollers that abut against the inner top wall of the limiting groove.

[0012] The principle and effects of this technical solution: In the initial state, the sidewall of the protrusion slides against the inner sidewall of the limiting groove, the rollers installed on both sides of the bottom of the crossbar contact the top of the lower mold, and the rollers on both sides of the protrusion contact the inner top wall of the limiting groove. When it is necessary to move the crossbar, the waterproof motor drives the corresponding gear to rotate through the two shafts. Since the crossbar cannot move up and down relative to the lower mold, and the gear meshes with the rack, the crossbar moves along the length of the rack as the gear rotates.

[0013] By using the above-mentioned configuration and multiple rollers, the horizontal bar can be prevented from moving up and down relative to the lower mold, while reducing the friction between the horizontal bar and the lower mold, thus improving the smoothness of the device's operation and extending its service life.

[0014] In this utility model, the side wall of the crossbar is fixedly provided with connecting ears at intervals, the adjustment assembly includes a waterproof cylinder and a movable shaft rotatably inserted into the two connecting ears, a plurality of nozzles are fixedly connected to the radial outer side wall of the movable shaft, and the waterproof cylinder is drivenly connected to the movable shaft.

[0015] In this utility model, a lever is fixedly provided at one end of the movable shaft, and a through groove is provided on the lever. A round pin is fixedly provided at the output end of the waterproof cylinder, and the round pin slides against the inner side wall of the through groove.

[0016] The principle and effects of this technical solution: The axes of the multiple nozzles are located on the same cross section. Before production begins, the horizontal position of the round pin is adjusted by the telescopic waterproof cylinder. When the round pin moves, it pushes the lever to rotate, which in turn drives the movable shaft and each of the nozzles to rotate, so that the cross section coplanar with the axes of the multiple nozzles forms an angle with the inner side wall and the inner bottom wall of the receiving groove. After the cross bar moves once in one direction, the waterproof cylinder continues to move the round pin horizontally, which in turn continues to rotate the movable shaft until the multiple nozzles rotate to the other side of the vertical plane. Then, the displacement component drives the cross bar to return to its original position.

[0017] The above settings allow for adjustment of the nozzle's axis, preventing it from becoming parallel to the inner wall of the screen and ensuring the device's cleaning effectiveness.

[0018] In this invention, the axes of the nozzles located at both ends of the movable shaft are inclined to the axis of the movable shaft. This arrangement ensures effective cleaning of the remaining inner walls of the screen. Attached Figure Description

[0019] Figure 1 This is an isometric view of the overall structure of this utility model; Figure 2 This is a partial isometric view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 Disassembly of the components of this utility model Figure 1 ; Figure 5 Disassembly of the components of this utility model Figure 2 . Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 10, slurry tank; 20, upper mold; 30, lower mold; 31, receiving tank; 32, water channel; 33, through hole; 34, rack; 35, limiting groove; 40, hydraulic system; 50, mesh mold; 60, rinsing assembly; 61, crossbar; 62, nozzle; 63, protrusion; 64, connecting lug; 71, rotating shaft; 72, waterproof motor; 73, gear; 80, roller; 91, waterproof cylinder; 911, round pin; 92, movable shaft; 93, lever; 94, through groove.

[0021] Example: As attached Figure 1-5 As shown, this utility model discloses a pulp product forming mold with rinsing function, installed in a pulp tank 10, including an upper mold 20, a lower mold 30, and a rinsing assembly 60. The upper mold 20 is fixedly disposed on the top of the pulp tank 10, and the lower mold 30 is slidably installed below the upper mold 20 via a hydraulic system 40. The top of the lower mold 30 is provided with a receiving groove 31, and a water channel 32 is provided inside the lower mold 30 below the receiving groove 31. The inner sidewall of the receiving groove 31 is provided with through holes 33 that communicate with the water channel 32 at intervals. The receiving trough 31 is also fixedly provided with a mesh mold 50. The bottom of the lower mold 30 is provided with a negative pressure component (not shown in the figure) that communicates with the water channel 32. The flushing component 60 includes a crossbar 61 that is slidably provided on the top of the lower mold 30 through a displacement component. Multiple nozzles 62 are provided at intervals on one side of the crossbar 61. The outer wall of the crossbar 61 is also provided with an adjustment component for adjusting the installation angle of the nozzles 62. A diversion pipe that communicates with the multiple nozzles 62 is fixedly provided on the crossbar 61. The diversion pipe is connected to a pressurizing device.

[0022] In this embodiment, racks 34 are fixedly provided on both sides of the top of the lower mold 30. The displacement assembly includes a rotating shaft 71 symmetrically inserted into both sides of the crossbar 61, a waterproof motor 72 fixedly provided in the crossbar 61 and connected to the two rotating shafts 71 for transmission, and gears 73 fixedly sleeved on the outside of the crossbar 61 at the ends of the rotating shafts 71 and meshing with the corresponding racks 34. The gears 73 and racks 34 are both made of rubber material.

[0023] In this embodiment, rollers 80 are rotatably provided on both sides of the bottom of the crossbar 61, a limiting groove 35 is provided on the top of the lower mold 30 between the receiving groove 31 and the rack 34, and a protrusion 63 that is slidably inserted into the limiting groove 35 is fixedly provided on the bottom of the crossbar 61.

[0024] In this embodiment, the vertical cross-section of the limiting groove 35 is T-shaped, and both sides of the protrusion 63 are rotatably provided with rollers 80 that abut against the inner top wall of the limiting groove 35.

[0025] In this embodiment, the side wall of the crossbar 61 is fixedly provided with connecting ears 64 at intervals. The adjustment assembly includes a waterproof cylinder 91 and a movable shaft 92 rotatably inserted into the two connecting ears 64. The plurality of nozzles 62 are fixedly connected to the radial outer side wall of the movable shaft 92. The waterproof cylinder 91 is drivenly connected to the movable shaft 92.

[0026] In this embodiment, a lever 93 is fixedly provided at one end of the movable shaft 92, and a through groove 94 is provided on the lever 93. A round pin 911 is fixedly provided at the output end of the waterproof cylinder 91, and the round pin 911 slides against the inner side wall of the through groove 94.

[0027] In this embodiment, the axis of the nozzle 62 located at both ends of the movable shaft 92 is inclined to the axis of the movable shaft 92.

[0028] The specific implementation process is as follows: In its initial state, the rinsing assembly 60 is located outside the vertical projection of the upper mold 20. During use, the lower mold 30 is submerged into the pulp tank 10 using the hydraulic system 40 and then retrieved. A negative pressure assembly draws out the water from the receiving tank 31 through the through-holes 33 and water channels 32. The fibers in the receiving tank 31 adhere to the mesh mold 50 to form a wet paper preform. The lower mold 30 is then raised further, allowing the upper mold 20 and lower mold 30 to clamp and shape the wet paper preform. After shaping, the upper mold 20 absorbs the wet paper preform, and the lower mold 30 is lowered. Some fibers may become clogged in the mesh of the screen 50. In this case, the displacement component is driven to move the crossbar 61 back and forth once, and the nozzle 62 sprays high-pressure fluid (the fluid can be gas or a gas-liquid mixture) into the screen 50. The fluid flushes the fibers clogged in the mesh into the gap between the screen 50 and the receiving groove 31. When the negative pressure component is used for vacuum suction next time, the fibers in the gap between the screen 50 and the receiving groove 31 will be discharged. Because the diameter of the through hole 33 and the water channel 32 is large, the fibers are difficult to adhere to the inner wall of the through hole 33 and the water channel 32.

[0029] In the initial state, the sidewall of the protrusion 63 slides against the inner sidewall of the limiting groove 35, the rollers 80 installed on both sides of the bottom of the crossbar 61 contact the top of the lower mold 30, and the rollers 80 on both sides of the protrusion 63 contact the inner top wall of the limiting groove 35. When it is necessary to move the crossbar 61, the waterproof motor 72 drives the corresponding gear 73 to rotate through the two rotating shafts 71. Since the crossbar 61 cannot move up and down relative to the lower mold 30, and the gear 73 meshes with the rack 34, the crossbar 61 moves along the length direction of the rack 34 as the gear 73 rotates.

[0030] The axes of the multiple nozzles 62 are located on the same cross section. Before production begins, the horizontal position of the round pin 911 is adjusted by the telescopic waterproof cylinder 91. When the round pin 911 moves, it pushes the lever 93 to rotate, which in turn drives the movable shaft 92 and each of the nozzles 62 to rotate, so that the cross section coplanar with the axes of the multiple nozzles 62 forms an angle with the inner side wall and the inner bottom wall of the receiving groove 31. After the cross bar 61 moves once in one direction, the waterproof cylinder 91 continues to move the round pin 911 horizontally, which in turn continues to rotate the movable shaft 92 until the multiple nozzles 62 rotate to the other side of the vertical plane. Then, the displacement component drives the cross bar 61 to reset.

[0031] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pulp product forming mold with rinsing function, installed in a pulp tank, characterized in that, include: The upper mold is fixedly installed on the top of the slurry tank; The lower mold is slidably installed below the upper mold via a hydraulic system. The top of the lower mold is provided with a receiving groove, and a water channel is provided below the receiving groove inside the lower mold. The inner sidewall of the receiving groove is provided with through holes communicating with the water channel at intervals. A mesh is also fixedly installed inside the receiving groove, and a negative pressure component communicating with the water channel is provided at the bottom of the lower mold. The rinsing assembly includes a crossbar slidably mounted on the top of the lower mold via a displacement component. Multiple nozzles are spaced apart on one side of the crossbar, and an adjustment component for adjusting the installation angle of the nozzles is also provided on the outer wall of the crossbar.

2. The pulp product molding die with rinsing function as described in claim 1, characterized in that: Both sides of the top of the lower mold are fixedly provided with racks. The displacement component includes a rotating shaft symmetrically inserted into both sides of the crossbar, a waterproof motor fixedly provided in the crossbar and connected to the two rotating shafts for transmission, and gears fixedly sleeved on the outside of the crossbar at the ends of the rotating shafts and meshing with the corresponding racks.

3. The pulp product molding die with rinsing function as described in claim 2, characterized in that: Rollers are rotatably provided on both sides of the bottom of the crossbar, a limiting groove is provided on the top of the lower mold between the receiving groove and the rack, and a protrusion that slides into the limiting groove is fixedly provided on the bottom of the crossbar.

4. The pulp product molding die with rinsing function as described in claim 3, characterized in that: The vertical cross-section of the limiting groove is T-shaped, and rollers that rotatably abut against the inner top wall of the limiting groove are provided on both sides of the protrusion.

5. The pulp product molding die with rinsing function as described in claim 1, characterized in that: The crossbar has connecting ears fixedly provided at intervals on its side wall. The adjustment assembly includes a waterproof cylinder and a movable shaft rotatably inserted into the two connecting ears. Multiple nozzles are fixedly connected to the radial outer side wall of the movable shaft. The waterproof cylinder is drivenly connected to the movable shaft.

6. The pulp product molding die with rinsing function as described in claim 5, characterized in that: A lever is fixedly installed at one end of the movable shaft, and a through groove is opened on the lever. A round pin is fixedly installed at the output end of the waterproof cylinder, and the round pin slides against the inner side wall of the through groove.

7. The rinsing mold for pulp products as described in claim 5 or 6, characterized in that: The axes of the nozzles located at both ends of the movable shaft are inclined to the axis of the movable shaft.

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