Plywood flattening cold press

Abstract

The utility model discloses a plywood flattening cold press which comprises a working table, a cold pressing base is arranged on the working table, a lower cold pressing platform is arranged on the cold pressing base, guide columns are arranged at the four corners of the cold pressing base, a hydraulic cylinder assembly is arranged at the tops of the guide columns, and the hydraulic cylinder assembly comprises a supporting top plate and a hydraulic cylinder body. A lower pressing plate is arranged below the hydraulic cylinder assembly; the device has the beneficial effects that the device has the same principle as the plywood pressing principle of the traditional cold press, but the device heats the part in contact with the edge of the plywood to form partial hot pressing so as to make up the condition of non-uniform stress on the edge plywood, and when the cold pressing starts, the main body of the plywood is the stress main area, so that the cold pressing gluing effect is better; and the edge is heated by the heating plate, so that the hot-pressing process of the simulation part is formed, and the viscose of the plywood at the edge and the edge plate are heated and softened and are easier to form.

Description

Technical Field

[0001] The utility model relates to the field of plywood, in particular to a plywood flattening cold press. Background Art

[0002] Plywood is a board made of thin wood slices or thin wood slices and other materials glued together. It has a uniform structure and high strength, and is often used in furniture manufacturing, construction and decoration. The production process of plywood includes the selection of raw materials, cutting, drying, gluing and pressing. The pressing process needs to choose hot pressing or cold pressing according to the thickness of the plywood. In general, hot pressing is used for plywood, which has better effects. However, when producing large quantities of thin plywood, cold pressing can provide higher speed and less energy loss.

[0003] Compared with hot pressing, cold pressing can save heat loss. At the same time, it only needs to press the surface of the plywood, and the speed is also improved. However, when the cold press machine presses the plywood, since there is no heat energy involved in the plywood, the plywood body is in a relatively hard state during the pressing process. When cold pressing, the force effect at the edge of the plywood will be lower than that at the center of the board body, resulting in poor gluing effect at the edge of the plywood. After the cold pressing is completed, the edge of the plywood will generally be higher than the center, resulting in an uneven surface of the plywood. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that when the cold press machine performs cold pressing on the plywood, since the plywood has no thermal energy involved, the plywood body is in a relatively hard state during the pressing process. During the cold pressing, the force effect at the edge of the plywood will be lower than that at the center of the board body, resulting in poor gluing effect when the edge of the plywood is pressed down. After the cold pressing is completed, the edge of the plywood will generally be higher than the center, resulting in an uneven surface of the plywood.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the utility model provides the following technical solutions:

[0008] A plywood flattening cold press machine comprises a workbench, a cold pressing seat is provided on the workbench, a lower cold pressing platform is provided on the cold pressing seat, guide columns are provided at the four corners of the cold pressing seat, a hydraulic cylinder assembly is provided on the top of the guide column, the hydraulic cylinder assembly comprises a supporting top plate and a hydraulic cylinder body, a lower pressing plate is provided below the hydraulic cylinder assembly, a connecting plate layer is provided below the lower pressing plate, an upper cold pressing platform is provided below the connecting plate layer, the upper cold pressing platform comprises a pressing plate, a connecting block and a heating plate, the pressing plate is fixedly connected to the connecting plate layer, the heating plate is provided on the four sides of the pressing plate, and the connecting block is provided between the heating plate and the connecting plate layer.

[0009] Furthermore, the hydraulic cylinder assembly is fixed to the top of the guide column, the support top plate is fixedly connected to the top of the guide column, and the hydraulic rod of the hydraulic cylinder body passes through the support top plate and is fixedly connected to the lower pressure plate.

[0010] Furthermore, the lower pressure plate and the connecting plate layer are sleeved on the guide column, an auxiliary pressure cylinder is provided on one side of the workbench, one end of the telescopic rod of the auxiliary pressure cylinder is fixedly connected to the connecting plate layer, and a protrusion is provided at the connection between the connecting plate layer and the telescopic rod of the auxiliary pressure cylinder.

[0011] Furthermore, the lower cold pressing platform has the same structure as the upper cold pressing platform, the heating plate is made of metal, a heating wire is provided in the heating plate, the heating plate is fixedly connected to the connecting plate layer through the connecting block, and an insulating gasket is provided between the connecting block and the connecting plate layer.

[0012] Furthermore, a chassis is provided on one side of the workbench.

[0013] (III) Beneficial effects

[0014] The beneficial effects of the utility model are:

[0015] The principle of plywood pressing is the same as that of traditional cold presses, but the part in contact with the edge of the plywood is heated to form partial hot pressing to compensate for the uneven force on the edge plywood. When the cold pressing starts, the main body of the plywood is the main force-bearing area, and its cold pressing bonding effect is better. The edge is heated by a heating plate to simulate the formation of a partial hot pressing process, so that the glue of the plywood at the edge and the edge board are softened by heat and are easier to shape. Under the pressure of partial heat energy and cold pressing, the plywood at the edge can also be better bonded, so that after the plywood is cold pressed, the overall surface is smooth and not convex. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is an enlarged view of a part A of the utility model;

[0018] Figure 3 It is a three-dimensional diagram from another angle of the utility model;

[0019] Markings in the figure: 1-workbench, 2-lower cold pressing platform, 3-guide column, 4-hydraulic cylinder assembly, 5-lower pressing plate, 6-connecting plate layer, 7-upper cold pressing platform, 8-auxiliary pressure cylinder, 9-chassis, 1a-cold pressing seat, 4a-support top plate, 4b-hydraulic cylinder body, 6a-bump, 7a-pressing plate, 7b-connecting block, 7c-heating plate, 7d-thermal insulation gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] See also Figure 1-3 The plywood flattening cold press shown in the figure comprises a workbench 1, on which a cold pressing seat 1a is provided, which is a supporting plate layer for supporting a lower cold pressing platform 2, on which a lower cold pressing platform 2 is provided, and at four corners of the cold pressing seat 1a guide columns 3 are provided, which are used to guide a hydraulic cylinder assembly 4 to perform a downward pressing action and reset, and at the top of the guide column 3 a hydraulic cylinder assembly 4 is provided, which comprises a supporting top plate 4a and a hydraulic cylinder body 4b, below which a lower pressing plate 5 is provided, below which a connecting plate layer 6 is provided, below which an upper cold pressing platform 7 is provided, and the upper cold pressing platform 7 comprises a pressing plate 7a, a connecting block 7b and a heating plate 7c, the pressing plate 7a is fixedly connected to the connecting plate 6 layer, the heating plate 7c is provided on four sides of the pressing plate 7a, and the connecting block 7b is provided between the heating plate 7c and the connecting plate layer 6.

[0023] The hydraulic cylinder assembly 4 is fixed to the top of the guide column 3, the support top plate 4a is fixedly connected to the top of the guide column 3, the hydraulic rod of the hydraulic cylinder body 4b passes through the support top plate 4a and is fixedly connected to the lower pressure plate 5, the hydraulic cylinder assembly 4 is used to provide cold pressing driving force, and the hydraulic cylinder body 4b is used to drive the hydraulic cylinder to press downward. The hydraulic rod moves downward to drive the lower pressure plate 5 and the connecting plate layer 6 to press downward, and the connecting plate layer 6 is used to fix the upper cold pressing platform 7, thereby driving the upper cold pressing platform 7 to press downward toward the lower cold pressing platform 2.

[0024] The lower pressure plate 5 and the connecting plate layer 6 are sleeved on the guide column, and an auxiliary pressure cylinder 8 is provided on one side of the workbench 1. One end of the telescopic rod of the auxiliary pressure cylinder 8 is fixedly connected to the connecting plate layer 6. A protrusion 6a is provided at the connection between the connecting plate layer 6 and the telescopic rod of the auxiliary pressure cylinder 8. The auxiliary pressure cylinder 8 assists the hydraulic cylinder assembly 4 in performing cold pressing, and is connected to the connecting plate layer 6 through the protrusion 6a. During the cold pressing and resetting process, it uses the auxiliary cold pressing and resetting functions on the diagonal side.

[0025] The lower cold pressing platform 2 has the same structure as the upper cold pressing platform 7. The heating plate 7c is made of metal and is hollow inside. The heating wire is arranged therein. The heating wire is arranged in the heating plate 7c. The heating plate 7c is fixedly connected to the connecting plate layer 6 through the connecting block 1b. A heat insulating gasket 7d is arranged between the connecting block 7b and the connecting plate layer 6. When cold pressing, the hydraulic cylinder assembly 4 is used to provide power, and the pressing plate 7a is the center plate. The heating plate 7c is arranged on its outer side to wrap it. When the plywood is placed between the upper cold pressing platform 7 and the lower cold pressing platform 2 and cold pressing is started, the heating plate 7c contacts the edge plate of the plywood. The internal heating wire is energized to heat the heating plate 7c, and the heat is transferred to the edge of the plywood, so that the board and the internal adhesive are heated, and it is beneficial to the pressing and deformation to compensate for the uneven force on the edge board under the cold pressing state, that is, the edge board is under less force. In order to prevent excessive heat from being transferred to the connecting board layer 6, the connecting board layer 6 and the connecting block 7b are insulated by an insulating gasket 7d, and the heating plate 7c is provided with a heat dissipation hole on the side facing the plywood. After the cold pressing is completed, if the surface of the plywood is still uneven, it is polished with a grinding wheel, and its flatness is much higher than that of a traditional cold press.

[0026] A machine box 9 is provided on one side of the workbench 1 for controlling the cold pressing machine to perform cold pressing.

[0027] The specific working principle is: the plywood to be cold pressed is placed on the lower cold pressing platform 2, and then the heating plate 7c is heated, and then the hydraulic cylinder assembly 4 is started to perform cold pressing along the guide column 3. During the process, the center of the plywood is evenly stressed, while the edge is subjected to pressure and gluing compensation through simulated hot pressing. After the cold pressing action is completed, the upper cold pressing platform 7 is reset, and the plywood is removed. If there is any unevenness, it is trimmed with a grinding wheel.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A plywood flattening cold press, characterized in that: The invention comprises a workbench (1), wherein a cold pressing seat (1a) is provided on the workbench (1), a lower cold pressing platform (2) is provided on the cold pressing seat (1a), guide columns (3) are provided at four corners of the cold pressing seat (1a), a hydraulic cylinder assembly (4) is provided on the top of the guide column (3), the hydraulic cylinder assembly (4) comprises a supporting top plate (4a) and a hydraulic cylinder body (4b), a lower pressing plate (5) is provided below the hydraulic cylinder assembly (4), a connecting plate layer (6) is provided below the lower pressing plate (5), an upper cold pressing platform (7) is provided below the connecting plate layer (6), the upper cold pressing platform (7) comprises a pressing plate (7a), a connecting block (7b) and a heating plate (7c), the pressing plate (7a) is fixedly connected to the connecting plate layer (6), the heating plate (7c) is provided on four sides of the pressing plate (7a), and the connecting block (7b) is provided between the heating plate (7c) and the connecting plate layer (6).

2. The plywood flattening cold press according to claim 1, characterized in that: The hydraulic cylinder assembly (4) is fixed to the top of the guide column (3), the support top plate (4a) is fixedly connected to the top of the guide column (3), and the hydraulic rod of the hydraulic cylinder body (4b) passes through the support top plate (4a) and is fixedly connected to the lower pressure plate (5).

3. The plywood flattening cold press according to claim 1, characterized in that: The lower pressure plate (5) and the connecting plate layer (6) are sleeved on the guide column, an auxiliary pressure cylinder (8) is provided on one side of the workbench (1), one end of the telescopic rod of the auxiliary pressure cylinder (8) is fixedly connected to the connecting plate layer (6), and a protrusion (6a) is provided at the connection between the connecting plate layer (6) and the telescopic rod of the auxiliary pressure cylinder (8).

4. The plywood flattening cold press according to claim 1, characterized in that: The lower cold pressing platform (2) has the same structure as the upper cold pressing platform (7); the heating plate (7c) is made of metal; a heating wire is provided in the heating plate (7c); the heating plate (7c) is fixedly connected to the connecting plate layer (6) via the connecting block (7b); and a heat insulating gasket (7d) is provided between the connecting block (7b) and the connecting plate layer (6).

5. The plywood flattening cold press according to claim 1, characterized in that: A machine box (9) is provided on one side of the workbench (1).

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