Reciprocating type forming device for paper tray production

Abstract

The utility model discloses a reciprocating type forming device for paper tray production. The reciprocating type forming device comprises a machine frame, a pulp tank, a lower die assembly and an upper die assembly matched with the lower die assembly. A lower die driving mechanism for driving the lower die assembly to ascend and descend in the vertical direction is arranged on the rack, and a fixing part of the lower die driving mechanism is fixedly arranged on the rack; an upper die driving mechanism used for driving the upper die assembly to horizontally slide is arranged on the rack, a fixing part of the upper die driving mechanism is fixedly arranged on the rack, and the upper die assembly is located above the lower die assembly. The paper tray forming machine is simple in structure and small in occupied area, paper tray products are formed through matching of the upper die assembly and the lower die assembly, the upper die and the lower die corresponding to paper tray dies can be replaced on the upper die assembly and the lower die assembly according to the requirements of actual products, replacement is easy and convenient, the paper tray forming machine can adapt to dies in complex shapes, and production efficiency is improved. The device can adapt to the replacement of various non-standard paper support molds, and can completely meet the production requirements of small and medium-sized enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of paper tray forming equipment, in particular to a reciprocating forming device for paper tray production. Background Art

[0002] Paper trays are made of carton scraps, newsprint, white pure pulp boards, etc. The pulp is crushed and mixed into a slurry with a certain concentration. The slurry is then formed on a molding die. The formed wet blanks are then dried, hot pressed and shaped to form environmentally friendly paper products of different types and uses. The products have a wide range of uses, such as egg trays, wine bottle trays, paper shoe trays, electrical appliance trays, etc.

[0003] Paper trays are generally made through processes such as pulping, mixing slurry, and paper mold forming. Among the existing paper mold forming equipment, the rotary drum forming machine has a drum that performs intermittent rotating motion. The drum has a tetrahedron, hexahedron, octahedron, dodecahedron, etc. Each surface will intermittently rotate to a different station to implement the corresponding process. This type of rotary drum forming machine is continuous production. Although the production efficiency is high, the mold investment is large. It is not suitable for small-scale production of non-standard paper shoe trays and other complex-shaped paper tray products, and is not suitable for small and medium-sized production-scale manufacturers. Utility Model Content

[0004] The main purpose of the utility model is to provide a reciprocating forming device for paper tray production, so as to solve the problems of large mold investment and unsuitability for small batch production of non-standard complex-shaped paper tray products in existing rotary drum paper tray forming machines.

[0005] To solve the above problems, the utility model is achieved as follows:

[0006] A reciprocating forming device for producing paper trays, comprising: a frame, a slurry tank, a lower mold assembly, and an upper mold assembly matched with the lower mold assembly; the slurry tank is arranged at the lower part of the frame;

[0007] The frame is provided with a lower die driving mechanism for driving the lower die assembly to rise and fall in a vertical direction, the lower die driving mechanism comprises a fixed portion and a movable portion slidably connected to the fixed portion, and the fixed portion of the lower die driving mechanism is fixedly arranged on the frame; the upper die assembly is slidably connected to the frame in a horizontal direction, and the frame is provided with an upper die driving mechanism for driving the upper die assembly to slide horizontally, the upper die driving mechanism comprises a fixed portion and a movable portion slidably connected to the fixed portion, the fixed portion of the upper die driving mechanism is fixedly arranged on the frame, and the upper die assembly is located above the lower die assembly.

[0008] Wherein, the upper mold assembly comprises an upper mold plate having a plurality of through holes, and an upper sealing cover having a fixed cover arranged on the upper mold plate;

[0009] The lower mold assembly comprises a lower mold plate with a plurality of through holes, and a lower sealing cover with a fixed cover arranged on the lower mold plate.

[0010] Wherein, a gas pipeline is connected to the upper sealing cover.

[0011] Wherein, a gas connecting pipe is connected to the lower sealing cover.

[0012] Wherein, a liquid connecting pipe is connected to the lower sealing cover.

[0013] Among them, a lower mold connecting frame is fixedly arranged between the movable part of the lower mold driving mechanism and the lower mold assembly, and the lower mold connecting frame includes an upper fixed beam fixedly connected to the movable part of the lower mold driving mechanism, and a supporting vertical rod connected between the upper fixed beam and the lower mold assembly, and the supporting vertical rod is vertically arranged.

[0014] Wherein, a guide sleeve for supporting the sliding of the supporting vertical rod is fixedly arranged on the frame.

[0015] Wherein, a horizontal guide rail is fixedly arranged on the frame, and the upper mold assembly is slidably connected to the guide rail via a sliding bracket; the sliding bracket is fixedly connected to the movable part of the upper mold driving mechanism.

[0016] Among them, the number of the upper mold assemblies and the number of the lower mold assemblies are both one or more, and the number of the upper mold assemblies is consistent with and corresponds to the lower mold assemblies, the number of the lower mold driving mechanisms is consistent with and corresponds to the lower mold assemblies, and the number of the upper mold driving mechanisms is consistent with and corresponds to the upper mold assemblies.

[0017] Among them, the upper mold driving mechanism is selected from any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder; the lower mold driving mechanism is selected from any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder.

[0018] The beneficial effects of the utility model are:

[0019] When the utility model is in use, firstly, the upper mold of the corresponding product is fixedly installed on the upper mold assembly according to the shape of the product, and the lower mold is fixedly installed on the lower mold assembly, and then the upper mold assembly is driven to move in the horizontal direction by the upper mold driving mechanism until the upper mold assembly is located directly above the lower mold assembly, and then the lower mold assembly is driven to descend into the slurry groove by the lower mold driving mechanism, driving the slurry upward to cooperate with the upper mold assembly for pressing.

[0020] The utility model has a simple structure and occupies a small area. The shaping of paper tray products is achieved through the cooperation of the upper mold assembly and the lower mold assembly. The upper and lower molds of the corresponding paper tray molds can be replaced on the upper mold assembly and the lower mold assembly according to the actual needs of the product. The replacement is relatively simple and convenient, and the processing requirements for the molds are low. It can adapt to molds with complex shapes and the requirements for the installation accuracy of the molds are not high. It can adapt to the replacement of various non-standard paper tray molds and can fully meet the production needs of small and medium-sized enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the utility model after the pulp tank is removed;

[0024] Figure 3 It is a structural schematic diagram of the sliding bracket of the utility model;

[0025] Figure 4 It is a partial structural schematic diagram of one viewing angle of the utility model;

[0026] Figure 5 It is a partial structural schematic diagram of the utility model from another viewing angle.

[0027] Description of Reference Numerals

[0028] 1. Frame; 11. Guide sleeve; 12. Guide rail; 13. Mounting frame; 2. Slurry tank; 3. Upper mold assembly; 31. Upper mold plate; 32. Upper sealing cover; 33. Gas pipeline; 4. Lower mold assembly; 41. Lower mold plate; 42. Lower sealing cover; 43. Gas connecting pipe; 44. Liquid connecting pipe; 45. Mounting ear plate; 5. Upper mold driving mechanism; 6. Lower mold driving mechanism; 7. Through hole; 8. Lower mold connecting frame; 81. Upper fixed beam; 82. Support vertical rod; 9. Sliding bracket; 91. Sliding seat; 92. Connecting rod. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] like Figure 1As shown, a reciprocating forming device for paper tray production includes: a frame 1, a pulp tank 2, a lower mold assembly 4, and an upper mold assembly 3 matched with the lower mold assembly 4; the pulp tank 2 is arranged at the lower part of the frame 1, and a liquid inlet hole and a liquid discharge hole (not shown in the figure) are opened on the pulp tank 2 to allow the prepared paper pulp to enter and discharge the pulp tank 2.

[0031] like Figure 1 and Figure 2 As shown, a lower die driving mechanism 6 for driving the lower die assembly 4 to rise and fall in the vertical direction is provided on the frame 1. The lower die driving mechanism 6 has a fixed portion and a movable portion slidably connected to the fixed portion. The lower die driving mechanism 6 uses any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder. The fixed portion of the lower die driving mechanism 6 is fixedly arranged on the frame 1. In this embodiment, the lower die driving mechanism 6 is a pneumatic cylinder, the cylinder seat of the pneumatic cylinder is the fixed portion, the piston rod end is the movable portion, and the cylinder seat of the pneumatic cylinder is fixedly arranged on the frame 1. The upper die assembly 3 is slidably connected to the frame 1 in the horizontal direction. An upper die driving mechanism 5 for driving the upper die assembly 3 to slide horizontally is provided on the frame 1. The upper die driving mechanism 5 has a fixed portion and a movable portion slidably connected to the fixed portion. The upper die driving mechanism 5 uses any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder. The fixed part of the upper die driving mechanism 5 is fixedly arranged on the frame 1. In this embodiment, the upper die driving mechanism 5 is a pneumatic cylinder, the cylinder seat of the pneumatic cylinder is the fixed part, the piston rod end is the movable part, and the cylinder seat of the pneumatic cylinder is fixedly arranged on the frame 1. The upper die assembly 3 is located above the lower die assembly 4. In this embodiment, the fixed part of the lower die driving mechanism 6 is located above the upper die assembly 3, which can avoid the positional interference between the lower die assembly 4 and the upper die assembly 3 when the lower die assembly 4 is raised or lowered. When the utility model is used, firstly, according to the shape of the product, the upper die of the corresponding product is fixedly installed on the upper die assembly 3, and the lower die is fixedly installed on the lower die assembly 4, and then the upper die driving mechanism 5 drives the upper die assembly 3 to move in the horizontal direction until the upper die assembly 3 is located directly above the lower die assembly 4, and then the lower die driving mechanism 6 drives the lower die assembly 4 to descend into the slurry tank 2, driving the slurry upward to cooperate with the upper die assembly 3 for pressing. The utility model realizes the shaping of paper tray products through the cooperation of the upper mold assembly 3 and the lower mold assembly 4. According to the needs of actual products, the upper and lower molds of the corresponding paper tray molds can be replaced on the upper mold assembly 3 and the lower mold assembly 4. The replacement is relatively simple and convenient, there is no restriction on the shape of the mold, and the requirement for the installation accuracy of the mold is not high. It can adapt to the replacement of various non-standard paper tray molds and can fully meet the production needs of small and medium-sized enterprises.

[0032] like Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the upper mold assembly 3 includes an upper mold plate 31 having a plurality of through holes 7, and an upper sealing cover 32 fixedly covered on the upper mold plate 31. In this embodiment, the upper sealing cover 32 is a flat rectangular box-shaped structure with an open bottom end. The bottom edge of the upper sealing cover 32 is in contact with and fixedly connected to the top surface of the upper mold plate 31. The through holes 7 of the upper mold plate 31 are within the covering range of the upper sealing cover 32. The lower mold assembly 4 includes a lower mold plate 41 having a plurality of through holes 7, and a lower sealing cover 42 fixedly covered on the lower mold plate 41. In this embodiment, the top edge of the lower sealing cover 42 is in contact with and fixedly arranged on the bottom surface of the lower mold plate 41. The through holes 7 of the lower mold plate 41 are within the covering range of the lower sealing cover 42. The lower sealing cover 42 is a conical box-shaped structure with an open top end. The side surface of the lower sealing cover 42 is inclined along the inner lower side, that is, the cross-sectional area of ​​the lower sealing cover 42 is gradually reduced from top to bottom, so that the water in the pulp can be discharged smoothly without accumulating in the lower sealing cover 42. In this embodiment, the multiple through holes 7 of the upper template 31 are arranged in a matrix of multiple rows and columns, and the multiple through holes 7 of the lower template 41 are arranged in a matrix of multiple rows and columns, which can allow water or gas to pass quickly. Among them, the upper sealing cover 32 is connected with a gas pipeline 33, and the gas pipeline 33 is connected and arranged at the upper part of the upper sealing cover 32. The lower sealing cover 42 is connected with a gas connecting pipe 43, and the lower sealing cover 42 is connected with a liquid connecting pipe 44. The gas connecting pipe 43 and the liquid connecting pipe 44 are both connected and arranged at the bottom of the lower sealing cover 42. The water in the slurry on the lower mold is sucked out through the liquid connecting pipe 44, and the semi-dry paper support after forming on the lower mold is blown to the upper mold through the gas connecting pipe 43.

[0033] A lower die connecting frame 8 is fixedly arranged between the movable part of the lower die driving mechanism 6 and the lower die assembly 4. The lower die connecting frame 8 includes an upper fixed beam 81 fixedly connected to the movable part of the lower die driving mechanism 6, and a support vertical rod 82 connected between the upper fixed beam 81 and the lower die assembly 4. The support vertical rod 82 is arranged vertically. A guide sleeve 11 for supporting the support vertical rod 82 to slide is fixedly arranged on the frame 1. In this embodiment, the lower mold driving mechanism 6 adopts a pneumatic cylinder, the upper fixed beam 81 is a horizontally arranged beam-like structure, the lower mold driving mechanism 6 is arranged vertically, the cylinder seat of the lower mold driving mechanism 6 is fixedly arranged on the top of the frame 1, the piston rod end of the lower mold driving mechanism 6 is vertically downward and fixedly arranged with the middle part of the upper fixed beam 81 in the axial direction, the number of the supporting vertical rods 82 is not limited, and can be one or more, as long as it can ensure that it can be firmly connected to the lower mold assembly 4, in this embodiment, the number of the supporting vertical rods 82 is two, and the two supporting vertical rods 82 are respectively arranged at the axial ends of the upper fixed beam 81, the top of the supporting vertical rod 82 is fixedly connected to the upper fixed beam 81 by means of threaded connection, and the lower part of the supporting vertical rod 82 extends downward through the guide sleeve 11, and is fixedly connected to the lower mold plate 41 by means of threaded connection. With the support of the guide sleeve 11, the supporting vertical rod 82 can move up and down smoothly. In order to prevent the lower template 41 from interfering with the upper template 31 when moving, mounting ear plates 45 protruding from the corresponding side edges are provided on both sides of the lower template 41, and the supporting vertical rod 82 is fixedly connected to the mounting ear plates 45 of the lower template 41 by means of threaded connection.

[0034] Combination Figure 3, a horizontal guide rail 12 is fixedly arranged on the frame 1, and the axial direction of the guide rail 12 is parallel to the width direction of the slurry tank 2. The upper mold assembly 3 is slidably connected to the guide rail 12 through a sliding bracket 9. The sliding bracket 9 is fixedly connected to the movable part of the upper mold driving mechanism 5. In this embodiment, the sliding bracket 9 is fixedly connected to the piston rod end of the upper mold driving mechanism 5. The cylinder seat of the upper mold driving mechanism 5 is fixedly arranged on one side of the frame 1, which is located on the same side as the side in the width direction of the slurry tank 2, and the axial direction of the piston rod of the upper mold driving mechanism 5 is parallel to the axial direction of the guide rail 12. The sliding bracket 9 includes a slide 91 and a connecting rod 92. The slide 91 is slidably connected to the guide rail 12, and the connecting rod 91 is vertically and fixedly arranged between the slide 91 and the upper mold assembly 3. The upper part of the connecting rod 91 is fixedly connected to the slide 91 by threaded connection, and the bottom end of the connecting rod 91 is fixedly connected to the upper part of the upper mold assembly 3 by welding. The number of connecting rods 91 is not limited, and can be one or more, as long as it can ensure that it can be stably connected to the upper mold assembly 3. In this embodiment, the number of connecting rods 91 is four, distributed at the four corners of the upper membrane assembly 3. More specifically, the four connecting rods 91 are respectively located at the four corners of the top surface of the upper sealing cover, so that the connection between the upper mold assembly 3 and the sliding bracket 9 can be more stable. In order not to interfere with the movement of the upper mold assembly 3 and the lower mold assembly 4, and also for aesthetics, a mounting frame 13 with a rectangular frame structure is fixedly set on the upper part of the frame 1, and the guide sleeve 11 and the guide rail 12 are concentrated and installed on the mounting frame 13. In addition, a control cabinet (PLC controller is installed in the control cabinet) is fixedly installed on the corresponding side of the frame 1, and the control cabinet is used to control the start and stop of the upper mold drive mechanism 5, the lower mold drive mechanism 6, and the opening and closing of each pipeline valve. The control connection relationship between the control cabinet and the upper mold drive mechanism 5, the lower mold drive mechanism 6, and each pipeline valve belongs to the mature technology in this field. Those skilled in the art can easily implement it according to the existing technology, which does not belong to the innovation point of the present utility model.

[0035] The number of upper mold components 3 and lower mold components 4 is one or more, and the number of upper mold components 3 and lower mold components 4 is consistent and one-to-one corresponding, the number of lower mold drive mechanisms 6 and lower mold components 4 is consistent and one-to-one corresponding, and the number of upper mold drive mechanisms 5 and upper mold components 3 is consistent and one-to-one corresponding. That is, the upper mold component 3, the upper mold drive mechanism 5, the lower mold component 4, and the lower mold drive mechanism 6 are a set of paper support forming components. The number of paper support forming components is set according to the production volume requirements of the enterprise. In this embodiment, the number of paper support forming components is two sets, that is, the number of upper mold components 3, the upper mold drive mechanism 5, the lower mold component 4, and the lower mold drive mechanism 6 is two each. The two sets of paper support forming components are arranged along the length direction parallel to the pulp tank 2. A partition (not shown in the figure) can be set in the middle and upper part of the pulp tank 2 so that when the lower template takes the pulp, it is not easy to interfere with the pulp taking of other lower templates. There is a gap between the bottom end of the partition and the bottom end of the pulp tank 2 to facilitate the timely replenishment of the slurry.

[0036] like Figure 1-Figure 5 As shown, when the utility model is used, the pulp tank is filled with pulp. First, according to the shape of the product, the upper mold corresponding to the product is fixedly installed on the bottom surface of the upper mold plate 31, and the lower mold is fixedly installed on the top surface of the lower mold plate 41. Then, the upper mold driving mechanism 5 (a pneumatic cylinder is used in this embodiment) drives the upper mold assembly 3 to move in the horizontal direction until the upper mold plate 31 is located directly above the lower mold plate 41. Then, the lower mold driving mechanism 6 (a pneumatic cylinder is used in this embodiment) drives the lower mold plate 41 to descend into the pulp tank 2. The slurry covers the lower mold fixed on the lower mold plate 41. After staying for 1-2 seconds, the lower mold is driven by the lower mold driving mechanism 6 to rise to the middle position and stay for 3-4 seconds. During this period of time, the water in the slurry of the lower mold is extracted through the action of the liquid connecting pipe 44 and the pump and the water is discharged into the wastewater collection container. (A drain pipe is connected to the liquid connecting pipe 44, and a pump is arranged on the pipeline. The inlet end of the pump is connected to the liquid connecting pipe 44, and the outlet end of the pump is connected to the wastewater collection container through the drain pipe), and continues to rise to combine the lower mold with the upper mold, and then blows compressed air to the lower mold through the gas connecting pipe to blow the product on the lower mold onto the upper mold, and then evacuates the upper sealing cover 32 through the gas pipeline to form a negative pressure vacuum in the upper sealing cover 32 to firmly adsorb the product to the upper mold, and then drives the lower mold to descend through the lower mold driving mechanism 6, and then drives the upper mold to move outward in the horizontal direction through the upper mold driving mechanism 5 to move to the platform where the product is placed, and then blows air into the upper sealing cover 32 through the gas pipeline 33 to blow the product onto the platform for subsequent processing steps.

[0037] In the utility model, the provision of the liquid connecting pipe 44 can absorb the moisture in the pulp in the lower mold, which is convenient for the molding of the paper tray product, and can first squeeze out part of the moisture in the product, thereby reducing the subsequent drying time. The provision of the gas connecting pipe 43 can blow the product from the lower mold to the upper mold, thereby achieving effective separation of the product from the lower mold, and facilitating the removal of the product with the upper mold. The universal mold for molding paper trays is provided with a through hole, through which the gas or liquid can pass smoothly, through the through hole, the through hole 7 on the corresponding template, and the corresponding sealing cover, so as to smoothly dehydrate, blow, evacuate, and other operations on the product on the mold. The utility model has a simple structure, is relatively simple to operate, and has a low failure rate.

[0038] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A reciprocating forming device for paper tray production, characterized in that: include: A frame, a slurry tank, a lower mold assembly, and an upper mold assembly matched with the lower mold assembly; the slurry tank is arranged at the lower part of the frame; The frame is provided with a lower die driving mechanism for driving the lower die assembly to rise and fall in a vertical direction, the lower die driving mechanism comprises a fixed portion and a movable portion slidably connected to the fixed portion, and the fixed portion of the lower die driving mechanism is fixedly arranged on the frame; the upper die assembly is slidably connected to the frame in a horizontal direction, and the frame is provided with an upper die driving mechanism for driving the upper die assembly to slide horizontally, the upper die driving mechanism comprises a fixed portion and a movable portion slidably connected to the fixed portion, the fixed portion of the upper die driving mechanism is fixedly arranged on the frame, and the upper die assembly is located above the lower die assembly.

2. A reciprocating forming device for paper tray production according to claim 1, characterized in that: The upper mold assembly includes an upper mold plate having a plurality of through holes, and an upper sealing cover having a fixed cover arranged on the upper mold plate; The lower mold assembly comprises a lower mold plate with a plurality of through holes, and a lower sealing cover with a fixed cover arranged on the lower mold plate.

3. A reciprocating forming device for paper tray production according to claim 2, characterized in that: The upper sealing cover is connected with a gas pipeline.

4. A reciprocating forming device for producing paper trays according to claim 2, characterized in that: The lower sealing cover is connected with a gas connecting pipe.

5. A reciprocating forming device for paper tray production according to claim 2, characterized in that: The lower sealing cover is connected with a liquid connecting pipe.

6. A reciprocating forming device for paper tray production according to claim 1, characterized in that: A lower mold connecting frame is fixedly arranged between the movable part of the lower mold driving mechanism and the lower mold assembly, and the lower mold connecting frame includes an upper fixed beam fixedly connected to the movable part of the lower mold driving mechanism, and a supporting vertical rod connected between the upper fixed beam and the lower mold assembly, and the supporting vertical rod is vertically arranged.

7. A reciprocating forming device for producing paper trays according to claim 6, characterized in that: A guide sleeve for supporting the sliding of the supporting vertical rod is fixedly arranged on the frame.

8. A reciprocating forming device for producing paper trays according to claim 1, characterized in that: A horizontal guide rail is fixedly arranged on the frame, and the upper die assembly is slidably connected to the guide rail via a sliding bracket; the sliding bracket is fixedly connected to the movable part of the upper die driving mechanism.

9. A reciprocating forming device for producing paper trays according to claim 1, characterized in that: The number of the upper mold assemblies and the number of the lower mold assemblies are both one or more, and the number of the upper mold assemblies is consistent with and corresponds to the lower mold assemblies, the number of the lower mold driving mechanisms is consistent with and corresponds to the lower mold assemblies, and the number of the upper mold driving mechanisms is consistent with and corresponds to the upper mold assemblies.

10. A reciprocating forming device for paper tray production according to claim 1, characterized in that: The upper die driving mechanism is selected from any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder; the lower die driving mechanism is selected from any one of an electric push rod, a hydraulic cylinder, and a pneumatic cylinder.

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