Molded pulp suction mold for re-sucking water in pulp suction cavity

Abstract

The utility model relates to the technical field of molds, in particular to a molded pulp suction mold for re-sucking water in a pulp suction cavity. Comprising a bottom plate, an upper mold and an auxiliary device, the auxiliary device comprises a lower mold, a filter plate, a lower vacuum pipe, an upper suction assembly and a guide assembly, a vacuum cavity is formed in the bottom of the lower mold, a forming machine is started, vacuumizing is conducted through the lower vacuum pipe, enough paper fibers are attached to a mold cavity of the lower mold, then the upper mold and the lower mold are closed, vacuumizing is conducted through the upper suction assembly, and the paper fibers are obtained. During vacuumizing and extraction at the bottom of the lower mold are achieved through the lower vacuum pipe, after the lower mold is matched with the upper mold, the upper side of the lower mold is matched with the upper suction assembly for extraction, water is easily and completely extracted, and therefore the problem that in the prior art, when a pulp mold suction mold is used, paper fibers cannot be sucked out easily is solved. In the prior art, a single water suction pipe is only arranged at the top for vacuum drainage treatment, but water at the bottom is not easy to suck out quickly, so that the problem that the product quality does not reach the standard due to poor parison dehydration effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a pulp molding slurry absorption mold capable of reabsorbing water in a slurry absorption cavity. Background Art

[0002] Pulp molding products are made from pulp, which is obtained by using a molding mold to absorb the pulp and then compression mold it, such as the supporting objects in mobile phone packaging shells. Because the finished products can be recycled and reused, they are environmentally friendly and are therefore widely used.

[0003] Vacuum filtration is a very important step in the pulp molding production process. Vacuum filtration uses filter screens and porous filter molds as filter media, creating a certain vacuum on one side of the mold. Under the action of pressure difference, the fluid in the suspension (ie, pulp) passes through the filter medium, and the solid particle fibers are retained by the filter medium, thereby achieving solid-liquid separation. The liquid passing through the filter medium is called filtrate, and the retained substance is called parison.

[0004] However, most of the current pulp molding slurry suction molds are only equipped with a single suction pipe on the top for vacuum drainage when in use, but the water at the bottom is not easy to be sucked out quickly, resulting in poor dehydration effect of the parison and substandard product quality. Utility Model Content

[0005] The utility model aims to provide a pulp molding slurry absorption mold which absorbs water in a slurry absorption cavity, aiming to solve the problem that most pulp molding slurry absorption molds in the prior art are only provided with a single water absorption pipe at the top for vacuum drainage treatment when in use, but the water at the bottom is not easy to be sucked out quickly, thus resulting in poor dehydration effect of the parison and substandard product quality.

[0006] To achieve the above-mentioned purpose, the utility model provides a pulp molding slurry absorption mold for re-absorbing water in a slurry absorption cavity, comprising a bottom plate and an upper mold, wherein the upper mold is located above the bottom plate, and further comprising an auxiliary device;

[0007] The auxiliary device comprises a lower mold, a filter plate, a lower vacuum tube, an upper suction assembly and a guide assembly, wherein the lower mold is fixedly connected to the bottom plate and is located between the bottom plate and the upper mold, the filter plate is fixedly connected to the lower mold and is located inside the lower mold, the lower vacuum tube is fixedly connected to the lower mold and is located at both sides of the bottom of the lower mold, the upper suction assembly is arranged on a side of the lower mold close to the lower vacuum tube, and the guide assembly is arranged on a side of the bottom plate close to the upper mold;

[0008] The bottom of the lower mold is provided with a vacuum cavity, which is communicated with the lower vacuum tube and is located below the filter plate.

[0009] Among them, the upper suction assembly includes an upper vacuum tube and a filter screen. The upper vacuum tube is detachably connected to the lower mold and is located on the side of the lower mold close to the lower vacuum tube. A solenoid valve is provided on the upper vacuum tube; the filter screen is welded inside the inlet of the upper vacuum tube.

[0010] Among them, the guide assembly includes a guide rod and a bearing seat, the guide rod is fixedly connected to the base plate and located on the base plate, and the number of the guide rods is four; the bearing seat is fixedly connected to the upper mold, and is slidably connected to the guide rod, and is located on the upper mold.

[0011] Wherein, a wear-resistant layer is arranged on the outer surface of the guide rod.

[0012] Wherein, the auxiliary device also includes a first limiting rod and a second limiting rod, the first limiting rod is threadedly connected to the base plate and is located on both sides of the base plate; the second limiting rod is threadedly connected to the base plate and is located on one side of the base plate close to the first limiting rod and is symmetrically arranged.

[0013] The utility model discloses a pulp molding slurry absorption mold for absorbing water in a slurry absorption cavity. The bottom plate is used to fix the mold, the upper mold is located above the bottom plate, the lower mold is located between the bottom plate and the upper mold, the bottom of the lower mold has a vacuum cavity, the filter plate is installed in the lower mold and is located above the vacuum cavity, the lower vacuum tube is connected with the vacuum cavity and is symmetrically installed on both sides of the bottom of the lower mold, the upper absorption component is arranged on the side of the lower mold close to the lower vacuum tube, the guide component is arranged on the side of the bottom plate close to the upper mold, during processing, the pulp raw material is stored through the lower mold cavity, the forming machine is started, and the lower vacuum tube is used to evacuate the vacuum first, so that the cavity of the lower mold has enough attached pulp. The paper fiber is then molded together with the upper mold and the lower mold, and then vacuumed together through the upper suction component, and the moisture of the paper fiber is sucked away, thus completing the wet blank forming process. When vacuuming, the bottom of the lower mold is extracted through the lower vacuum tube. After the lower mold and the upper mold are matched, the upper side is extracted through the upper suction component, thereby greatly ensuring that the moisture is completely extracted. This can solve the problem that most of the pulp molding suction molds in the prior art only have a single suction pipe on the top for vacuum drainage treatment, but the water at the bottom is not easy to be sucked out quickly, resulting in poor dehydration effect of the blank and resulting in substandard product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of a pulp molding slurry absorption mold for re-absorbing water in a slurry absorption cavity according to the first embodiment of the utility model.

[0016] Figure 2It is a structural schematic diagram of the lower vacuum tube of the first embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the overall structure of a pulp molding slurry absorption mold for re-absorbing water in a slurry absorption cavity according to a second embodiment of the utility model.

[0018] In the figure: 101-bottom plate, 102-upper mold, 103-lower mold, 104-filter plate, 105-lower vacuum tube, 106-vacuum chamber, 107-upper vacuum tube, 108-filter screen, 109-guide rod, 110-bearing seat, 201-first limit rod, 202-second limit rod. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] Embodiment 1:

[0021] like Figure 1 and Figure 2 As shown, Figure 1 It is a schematic diagram of the overall structure of a pulp molding slurry absorption mold that absorbs water in the slurry absorption cavity. Figure 2 It is a structural schematic diagram of the lower vacuum tube 105. The utility model provides a pulp molding slurry absorption mold that absorbs water in the slurry absorption cavity: it includes a bottom plate 101, an upper mold 102 and an auxiliary device, the auxiliary device includes a lower mold 103, a filter plate 104, a lower vacuum tube 105, an upper suction component and a guide component, the lower mold 103 has a vacuum cavity 106 at the bottom, the upper suction component includes an upper vacuum tube 107 and a filter screen 108, and the guide component includes a guide rod 109 and a bearing seat 110. The above scheme can solve the problem that the pulp molding slurry absorption mold under the prior art is mostly provided with a single water absorption pipe at the top for vacuum drainage treatment, but the water at the bottom is not easy to be quickly sucked out, resulting in poor dehydration effect of the parison and substandard product quality. It can be understood that the above scheme can improve the product processing quality.

[0022] In this embodiment, the upper mold 102 is located above the bottom plate 101, and the top connecting portion of the upper mold 102 can be connected to the downward power head of the equipment.

[0023] Among them, the lower mold 103 is fixedly connected to the bottom plate 101 and is located between the bottom plate 101 and the upper mold 102, the filter plate 104 is fixedly connected to the lower mold 103 and is located inside the lower mold 103, the lower vacuum tube 105 is fixedly connected to the lower mold 103 and is located on both sides of the bottom of the lower mold 103, the upper suction assembly is arranged on the side of the lower mold 103 close to the lower vacuum tube 105, and the guide assembly is arranged on the side of the bottom plate 101 close to the upper mold 102. The lower mold 103 is installed on the base plate 101 by means of positioning pins and bolts. The base plate 101 can be used to fix the mold. The filter plate 104 is installed on the lower mold 103 by means of bolts. A positioning circular shaft protrusion is arranged on the filter plate 104 in a cross shape to cooperate with the positioning hole on the mounting end face of the lower mold 103 to improve stability. The inlet flange of the lower vacuum tube 105 is installed at the water outlet at the bottom of the lower mold 103 by means of bolts, and the outlet flange is connected to the working pipeline of the external vacuum extractor and is symmetrically arranged. The upper suction assembly is arranged on the side of the lower mold 103 close to the lower vacuum tube 105 for further vacuum drainage treatment. The guide assembly is arranged on the side of the base plate 101 close to the upper mold 102 for guiding and cooperating between the upper mold 102 and the lower mold 103.

[0024] The bottom of the lower mold 103 has a vacuum chamber 106, which is connected to the lower vacuum pipe 105 and is located below the filter plate 104. The vacuum chamber 106 is convenient for water storage.

[0025] Secondly, the upper vacuum tube 107 is detachably connected to the lower mold 103 and is located on the side of the lower mold 103 close to the lower vacuum tube 105. A solenoid valve is provided on the upper vacuum tube 107; the filter screen 108 is welded in the inlet of the upper vacuum tube 107. The upper vacuum tube 107 is installed in the drain port on the top wall of the lower mold 103 by bolts, the filter screen 108 is welded in the inlet, and a solenoid valve is installed on the outlet side. The solenoid valve is used to control the closing or opening of the upper vacuum tube 107 when the lower vacuum tube 105 cooperates with the external vacuum extractor, and the outlet of the solenoid valve is connected to the working pipeline of the external vacuum extractor.

[0026] Then, the guide rod 109 is fixedly connected to the bottom plate 101 and is located on the bottom plate 101, and there are four guide rods 109; the bearing seat 110 is fixedly connected to the upper die 102, and is slidably connected to the guide rod 109, and is located on the upper die 102. The guide rod 109 has a T-shaped cross section and is installed on the bottom plate 101 through a positioning pin and a bolt. The bearing seat 110 has a T-shaped cross section and is installed on the upper die 102 through a positioning pin and a bolt. A linear sliding bearing is installed in its inner hole to slide with the guide rod 109.

[0027] Finally, a wear-resistant layer is provided on the outer surface of the guide rod 109. By providing the wear-resistant layer on the outer surface of the guide rod 109, the service life of the guide rod 109 can be extended, which is conducive to reducing the use cost.

[0028] The utility model is used to solve the problem that the pulp molding slurry suction mold under the prior art is mostly only provided with a single suction pipe on the top for vacuum drainage treatment, but the water at the bottom is not easy to be quickly sucked out, resulting in poor dehydration effect of the parison and substandard product quality. During processing, the pulp raw material is stored in the mold cavity of the lower mold 103, and the filter plate 104 can filter so that the water falls into the vacuum cavity 106 for storage, and the forming machine is started. The lower vacuum tube 105 is firstly used for vacuuming so that there are enough paper fibers attached to the mold cavity of the lower mold 103. At this time, the solenoid valve on the upper vacuum tube 107 is closed, and then the upper mold 102 and the filter plate 104 are closed. The lower mold 103 is closed, and the solenoid valve on the upper vacuum tube 107 is opened, and vacuum can be drawn together, and the moisture in the paper fiber is sucked away, thus completing the wet blank forming process. When vacuuming, the bottom of the lower mold 103 can be extracted through the lower vacuum tube 105. After the lower mold 103 is matched with the upper mold 102, the upper side is extracted through the upper suction assembly, thereby greatly ensuring that the moisture is completely extracted, and further solving the problem that most of the pulp molding suction molds in the prior art only have a single suction pipe on the top for vacuum drainage treatment, but the water at the bottom is not easy to be sucked out quickly, resulting in poor dehydration effect of the blank and resulting in substandard product quality.

[0029] Embodiment 2:

[0030] like Figure 3 As shown, Figure 3 It is a schematic diagram of the overall structure of a pulp molding slurry absorption mold that re-absorbs water in a slurry absorption cavity. On the basis of the first embodiment, the utility model provides a pulp molding slurry absorption mold that re-absorbs water in a slurry absorption cavity, and the auxiliary device also includes a first limiting rod 201 and a second limiting rod 202.

[0031] The first limiting rod 201 is threadedly connected to the bottom plate 101 and is located on both sides of the bottom plate 101; the second limiting rod 202 is threadedly connected to the bottom plate 101 and is located on the side of the bottom plate 101 close to the first limiting rod 201, and is symmetrically arranged. The first limiting rod 201 and the second limiting rod 202 have the same size, and the bottom threaded ends can be directly installed in the threaded installation holes of the bottom plate 101, and are symmetrically installed.

[0032] In this embodiment, by setting the first limit rod 201 and the second limit rod 202, when the upper mold 102 moves downward and fully cooperates with the lower mold 103, the bottom end surface of the upper mold 102 will respectively abut against the top end surfaces of the first limit rod 201 and the second limit rod 202, thereby forming a support to avoid excessive impact on the lower mold 103 and causing damage.

[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A pulp molding slurry absorption mold for re-absorbing water in a slurry absorption cavity, comprising a bottom plate and an upper mold, wherein the upper mold is located above the bottom plate, and is characterized in that: Also includes auxiliary devices; The auxiliary device comprises a lower mold, a filter plate, a lower vacuum tube, an upper suction assembly and a guide assembly, wherein the lower mold is fixedly connected to the bottom plate and is located between the bottom plate and the upper mold, the filter plate is fixedly connected to the lower mold and is located inside the lower mold, the lower vacuum tube is fixedly connected to the lower mold and is located at both sides of the bottom of the lower mold, the upper suction assembly is arranged on a side of the lower mold close to the lower vacuum tube, and the guide assembly is arranged on a side of the bottom plate close to the upper mold; The bottom of the lower mold is provided with a vacuum cavity, which is communicated with the lower vacuum tube and is located below the filter plate.

2. The pulp molding slurry absorption mold for re-absorbing water in the slurry absorption cavity according to claim 1, characterized in that: The upper suction assembly includes an upper vacuum tube and a filter screen. The upper vacuum tube is detachably connected to the lower mold and is located on the side of the lower mold close to the lower vacuum tube. A solenoid valve is provided on the upper vacuum tube; the filter screen is welded inside the inlet of the upper vacuum tube.

3. The pulp molding slurry absorption mold for re-absorbing water in the slurry absorption cavity according to claim 1, characterized in that: The guide assembly includes a guide rod and a bearing seat. The guide rod is fixedly connected to the base plate and is located on the base plate. There are four guide rods. The bearing seat is fixedly connected to the upper mold and is slidably connected to the guide rod and is located on the upper mold.

4. The pulp molding slurry absorption mold for re-absorbing water in the slurry absorption cavity according to claim 3, characterized in that: A wear-resistant layer is arranged on the outer surface of the guide rod.

5. The pulp molding slurry absorption mold for re-absorbing water in the slurry absorption cavity according to claim 1, characterized in that: The auxiliary device also includes a first limiting rod and a second limiting rod, the first limiting rod is threadedly connected to the base plate and is located on both sides of the base plate; the second limiting rod is threadedly connected to the base plate and is located on one side of the base plate close to the first limiting rod and is symmetrically arranged.

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