A pressing device for curved bamboo and wood components

Abstract

A pressing device for curved bamboo and wood components, composed of a closed frame, a jack, an intermediate crossbeam, an upper pressing plate, and a lower pressing plate. The jack, the intermediate crossbeam, the upper pressing plate, and the lower pressing plate are located in the space of the closed frame in the horizontal direction. The upper pressing plate is a convex arc surface, and the lower pressing plate is a concave arc surface. The arc surfaces at the contact point between the upper pressing plate and the lower pressing plate are coupled to each other, and a pressed bamboo wood board is sandwiched at the arc surface coupling point. The intermediate crossbeam, the upper pressing plate, and the lower pressing plate at each horizontal position form a group of single-layer pressing units. Multiple single-layer pressing units are connected up and down. Pin holes corresponding to the fixing holes of the columns on both sides of the closed frame are reserved at both ends of each intermediate crossbeam. The pin bolts and the fixing holes and the pin holes are in an inserted or unplugged state, so as to realize the fixation and movement of each single-layer pressing unit. The present invention realizes the pressing of curved bamboo and wood components, and the unitized structure greatly improves the flexibility and assembly performance of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of building material processing, and relates to a pressing device for a bamboo-wood component, in particular to a pressing device for a curved bamboo-wood component. Background Art

[0002] At present, most of the building structures in my country adopt brick-concrete structure and reinforced concrete structure, which require a large amount of clay products, cement and steel. These building materials have defects such as high energy consumption, high pollution, difficult to degrade after disposal, poor thermal insulation performance, and poor seismic performance. In the current environment of developing a low-carbon economy, new building materials are the priority development direction of civil engineering. Bamboo and wood materials are one of the most representative green and environmentally friendly materials at present, with the advantages of green, ecological, environmental protection, and low carbon. Among them, curved bamboo and wood components are also widely used in civil engineering, such as curved bamboo and wood components with aesthetic effects, cylindrical bamboo and wood components, and circular concrete bridge piers, The construction formwork of columns, etc.

[0003] However, the current bamboo and wood component pressing process is relatively simple, and the bamboo and wood components can only be pressed into a flat shape. For example, Chinese patent CN106042135A discloses a recombinant bamboo circulation pressing device, whose mold adopts a structure similar to channel steel, and realizes the pressing of solid rectangular recombinant bamboo components through a conveying device, a mold clamping device, a feeding device, a press, etc.; For another example, Chinese patent CN102862196A discloses a cold press for gluing bamboo and wood components, which uses a longitudinal pressing component, a lateral pressing member and a vertical pressing component arranged on a frame unit to process bamboo, wood, bamboo-wood composite and other composite materials into glued beam components; the above-mentioned technologies press the bamboo and wood components into relatively regular shapes, such as a rectangular parallelepiped, and cannot press the bamboo and wood components into a curved surface.

[0004] The technical difficulty of the current pressing device for curved bamboo and wood components lies in the complex structure of the curved mold. When pressing the curved surface, bamboo and wood fibers are prone to bursting and cracking due to the influence of curvature. The pressing and manufacturing process of curved components is complicated and the production efficiency is low. Summary of the invention

[0005] The invention relates to a device for pressing curved bamboo and wood components, which realizes efficient and high-quality manufacturing of curved bamboo and wood components and solves the technical problem of pressing curved bamboo and wood components.

[0006] The present invention provides a pressing device for curved bamboo and wood components, which solves the problem of pressing bamboo and wood components into curved shapes. The pressing device uses a closed frame and a jack as the main body, and a middle crossbeam, an upper pressing plate and a lower pressing plate to form a group of single-layer pressing units. The bamboo and wood components are heated by circulating heat-conducting oil stored in the upper pressing plate, and the bamboo and wood components are kept in a heated state to complete the pressing work, thereby avoiding the phenomenon of bamboo and wood fibers being easily fried and cracked due to the influence of curvature when pressing the curved surface. Multiple groups of single-layer pressing units are combined up and down to realize the simultaneous pressing of multi-layer curved bamboo and wood components, and the pressing of multi-layer curved bamboo and wood components can be flexibly increased or decreased according to needs. The curvature radius and size of the multiple groups of single-layer pressing units can be the same or different, and the pressing of curved bamboo and wood components with various curvatures can be realized at the same time, which greatly improves the production efficiency and the applicability flexibility of the pressing device.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressing device for curved bamboo and wood components, which is composed of a closed frame, a jack, an intermediate beam, an upper pressing plate, and a lower pressing plate, characterized in that a plurality of closed frames are arranged in parallel along the longitudinal direction and connected by discrete connecting plates, the jack, the intermediate beam, the upper pressing plate, and the lower pressing plate are located in the space of the closed frame in the transverse direction, the upper pressing plate is a convex arc surface, the lower pressing plate is a concave arc surface, the arc surfaces at the contact point between the upper pressing plate and the lower pressing plate are coupled to each other, and a pressed bamboo wood board is sandwiched at the coupling point of the arc surfaces, the upper pressing plate is provided with a closed cavity to store heat transfer oil and a heat transfer oil pipe connected to a circulation, and the circulating heat transfer oil stored in the upper pressing plate is The oil heats the bamboo and wood components, and the bamboo and wood components are kept in a heated state to complete the pressing work. The middle beam, upper pressing plate and lower pressing plate at each horizontal position form a group of single-layer pressing units. Multiple single-layer pressing units are connected up and down. The bottom end of the jack is connected to the bottom beam of the closed frame, and the top end of the jack is lifted to the middle beam of the single-layer pressing unit of the first layer. The upper pressing plate support of the single-layer pressing unit of the last layer is connected to the top beam of the closed frame. Pin holes corresponding to the fixing holes of the columns on both sides of the closed frame are left at both ends of each middle beam. The pin bolt and the fixing hole and the pin hole are in an inserted or unplugged state to realize the fixation and movement of each single-layer pressing unit.

[0008] The number of the single-layer pressing units is more than one, and the curvature radius and size of the multiple groups of single-layer pressing units are arbitrary.

[0009] The inserted or unplugged state of the pin of the middle cross beam corresponds to the working state of the single-layer pressing unit. When the single-layer pressing units of each layer are working, the pin is in the unplugged state, otherwise, the pin is in the inserted state. The inserted or unplugged state of the pin of the middle cross beam can determine the number of single-layer pressing units involved in the work.

[0010] The circulating heat transfer oil pipe is connected to the hot oil tank, and a separate heat transfer oil circulation control switch is provided corresponding to each upper pressing plate. A temperature sensor, a heating element and a heating switch are arranged in the hot oil tank. Each control switch can control whether the circulating heat transfer oil stored in the upper pressing plate of each single-layer pressing unit participates in the circulation work.

[0011] Flexible cables are arranged on both sides of the middle cross beam, each flexible cable connects the upper and lower middle cross beams, the length of the flexible cables is greater than or equal to the coupling depth of the contact between the upper pressing plate and the lower pressing plate of the single-layer pressing unit of the layer, and the flexible cables can drive each lower pressing plate to disengage from the corresponding upper pressing plate when the jack contracts, so as to facilitate the demoulding of the pressed bamboo wood board.

[0012] The jacks and the middle cross beams correspond to the closed frames and are arranged in the planes of the closed frames. The lifting speeds of the jacks in the multiple closed frames are the same, and the jacks are tension and compression jacks.

[0013] The two side surfaces of the middle cross beam are either in close sliding contact with the inner side surfaces of the columns, or are provided with rollers in close rolling contact with the inner side surfaces of the columns. The rollers are provided to reduce the friction during pressing and demoulding.

[0014] The fixing holes of the columns on both sides of the closed frame correspond to each other in height with the heights of the left and right columns.

[0015] The oil cylinder stroke of the jack is greater than or equal to the sum of the coupling depths of the contact points between the upper pressing plates and the lower pressing plates of the multiple groups of single-layer pressing units.

[0016] In the present invention, the entire pressing device is in a vertical or horizontal state. In the vertical state, the jack is vertically placed at the bottom or vertically placed at the top. In the horizontal state, the jack is placed horizontally.

[0017] The present invention has significant advantages and has the following beneficial effects:

[0018] (1) The pressing of curved bamboo and wood components is realized, which can be directly applied in practical engineering, greatly improving the availability of bamboo and wood materials.

[0019] (2) The middle crossbeam, upper pressing plate and lower pressing plate are used as a single-layer pressing unit, and the unitized structure greatly improves the flexibility and assembly performance of the device.

[0020] (3) Flexible temperature control keeps the bamboo and wood components in a heated state to complete the pressing work, avoiding defects such as fiber frying and cracking of the bamboo and wood fibers when pressing the curved surface.

[0021] (4) Multiple groups of single-layer pressing units are combined into one or more groups, and the curvature radius and size of the multiple groups of single-layer pressing units are arbitrary, so as to realize the simultaneous pressing of multi-layer curved bamboo and wood components. The pressing of multi-layer curved bamboo and wood components can be flexibly increased or decreased according to needs.

[0022] (5) The manufacturing process is quick, convenient and flexible, with high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the overall structure of a pressing device for a curved bamboo-wood component;

[0024] Figure 2 It is a top view of the AA section of a pressing device for a curved bamboo-wood component;

[0025] Figure 3 The present invention is a front view of a device for pressing a curved bamboo or wood component provided with rollers;

[0026] Figure 4 The present invention is a front view of a pressing device for a curved bamboo-wood component in a state ready for pressing;

[0027] Figure 5 It is a front view of a single-layer pressing unit in a pressing device for a curved bamboo-wood component;

[0028] Figure 6 It is a top view of a single-layer pressing unit in a pressing device for a curved bamboo-wood component;

[0029] Figure 7 It is a side view of a single-layer pressing unit in a pressing device for a curved bamboo-wood component;

[0030] In the attached drawings, 1 is a closed frame; 11 is a bottom beam; 12 is a top beam; 13 is a column; 131 is a fixing hole; 2 is a jack; 3 is an intermediate cross beam; 31 is a pin hole; 32 is a flexible cable; 33 is a roller; 4 is an upper pressure plate; 41 is heat transfer oil; 42 is a heat transfer oil pipe; 43 is a control switch; 5 is a lower pressure plate; 6 is a bamboo board; 7 is a pin bolt; 100 is a single-layer pressing unit; and 101 is a patch plate. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments: The present invention provides a pressing device for a curved bamboo and wood component, which is composed of a closed frame 1, a jack 2, an intermediate crossbeam 3, an upper pressing plate 4, and a lower pressing plate 5, and is characterized in that a plurality of closed frames 1 are arranged in parallel along the longitudinal direction and connected by discrete gusset plates 101, the jack 2, the intermediate crossbeam 3, the upper pressing plate 4, and the lower pressing plate 5 are located in the space of the closed frame 1 in the transverse direction, the upper pressing plate 4 is a convex arc surface, the lower pressing plate 5 is a concave arc surface, the arc surfaces at the contact point between the upper pressing plate 4 and the lower pressing plate 5 are coupled to each other, a pressed bamboo wood board 6 is sandwiched at the arc surface coupling point, the upper pressing plate 4 is provided with a closed cavity for storing heat transfer oil 41 and a heat transfer oil pipe for connecting the circulation 42. The middle cross beam 3, the upper pressing plate 4 and the lower pressing plate 5 at each horizontal position form a group of single-layer pressing units 100. The multiple single-layer pressing units 100 are connected up and down. The bottom end of the jack 2 is connected to the bottom beam 11 of the closed frame 1. The top end of the jack 2 is lifted on the middle cross beam 3 of the single-layer pressing unit 100 of the first layer. The upper pressing plate 4 of the single-layer pressing unit 100 of the last layer is supported and connected to the top beam 12 of the closed frame 1. Pin holes 31 corresponding to the fixing holes 131 of the columns 13 on both sides of the closed frame 1 are reserved at both ends of each middle cross beam 3. The pin bolt 7 and the fixing hole 131 and the pin hole 31 are in an inserted or unplugged state to realize the fixation and movement of each single-layer pressing unit 100.

[0032] The number of the single-layer pressing units 100 is more than one, and the curvature radius and size of the multiple groups of single-layer pressing units 100 are arbitrary.

[0033] The inserted or unplugged state of the pin 7 of the middle cross beam 3 corresponds to the working state of the single-layer pressing unit 100. When the single-layer pressing unit 100 of each layer is working, the pin 7 is in the unplugged state, otherwise, the pin 7 is in the inserted state.

[0034] The circulating heat-conducting oil pipe 42 is connected to the hot oil tank, and a separate heat-conducting oil circulation control switch 43 is provided corresponding to each upper pressing plate 4. A temperature sensor, a heating element and a heating switch are provided in the hot oil tank.

[0035] Flexible cables 32 are arranged on both sides of the middle cross beam 3, and each flexible cable 32 connects the upper and lower middle cross beams 3. The length of the flexible cable 32 is greater than or equal to the coupling depth of the contact between the upper pressing plate 4 and the lower pressing plate 5 of the single-layer pressing unit 100 of the layer. The flexible cable 32 is a kind of flexible rope or metal chain.

[0036] The jacks 2 and the middle cross beam 3 correspond to each closed frame 1 and are arranged in the plane of each closed frame 1. The lifting speeds of the jacks 2 in the multiple closed frames 1 are the same, and the jacks 2 are tension and compression jacks.

[0037] The two side surfaces of the middle cross beam 3 are either in close sliding contact with the inner side surfaces of the columns 13 , or rollers 33 are provided to be in close rolling contact with the inner side surfaces of the columns 13 .

[0038] The fixing holes 131 of the columns 13 on both sides of the closed frame 1 correspond to each other in height with the heights of the left and right columns.

[0039] The oil cylinder stroke of the jack 2 is greater than or equal to the sum of the coupling depths of the contact points between the upper pressing plate 4 and the lower pressing plate 5 of the multiple groups of single-layer pressing units 100.

[0040] In the present invention, the entire pressing device is in a vertical or horizontal state. In the vertical state, the jack 2 is vertically placed at the bottom or vertically placed at the top. In the horizontal state, the jack 2 is placed horizontally. In the embodiment, the jack 2 is placed vertically at the bottom and is located at the bottom of the closed frame 1; if the jack 2 is placed vertically at the top, the embodiment device is rotated 180 degrees and the jack 2 is located at the top of the closed frame 1; when the jack 2 is placed horizontally, the embodiment device is rotated 90 degrees.

Claims

1. A device for pressing curved bamboo and wood components, comprising a closed frame (1), a jack (2), an intermediate crossbeam (3), an upper pressing plate (4), and a lower pressing plate (5), characterized in that A plurality of closed frames (1) are arranged in parallel along the longitudinal direction and connected by discrete gussets (101); a jack (2), an intermediate crossbeam (3), an upper pressing plate (4), and a lower pressing plate (5) are located in the space of the closed frame (1) in the transverse direction; the upper pressing plate (4) is a convex arc surface, and the lower pressing plate (5) is a concave arc surface; the arc surfaces at the contact point between the upper pressing plate (4) and the lower pressing plate (5) are coupled to each other; a pressed bamboo board (6) is sandwiched at the arc surface coupling point; the upper pressing plate (4) is provided with a closed cavity for storing heat transfer oil (41) and a heat transfer oil pipe (42) for connecting the circulation; the intermediate crossbeam (3), the upper pressing plate (4), and the lower pressing plate (5) at each horizontal position form a group of single-layer pressing units (100); the plurality of single-layer pressing units (100) are connected in the upper and lower parts; flexible cables (32) are arranged on both sides of the intermediate crossbeam (3); each flexible cable (32) ) connects the upper and lower middle beams (3), the length of the flexible cable (32) is greater than or equal to the depth of the coupling at the contact point between the upper pressing plate (4) and the lower pressing plate (5) of the single-layer pressing unit (100) of the layer, the bottom end of the jack (2) is connected to the bottom beam (11) of the closed frame (1), the top end of the jack (2) is lifted on the middle beam (3) of the single-layer pressing unit (100) of the first layer, the upper pressing plate (4) of the single-layer pressing unit (100) of the last layer is supported and connected to the top beam (12) of the closed frame (1), and pin holes (31) corresponding to the fixing holes (131) of the columns (13) on both sides of the closed frame (1) are reserved at both ends of each middle beam (3), and the pin bolt (7) and the fixing hole (131) and the pin hole (31) are in an inserted or unplugged state to achieve the fixation and movement of each single-layer pressing unit (100).

2. A device for pressing a curved bamboo or wood component according to claim 1, characterized in that The inserted or unplugged state of the pin (7) of the middle cross beam (3) corresponds to the working state of the single-layer pressing unit (100). When the single-layer pressing unit (100) of each layer is working, the pin (7) is in the unplugged state, otherwise, the pin (7) is in the inserted state.

3. A device for pressing a curved bamboo or wood component according to claim 1, characterized in that The circulating heat transfer oil pipe (42) is connected to the hot oil tank, and a separate heat transfer oil circulation control switch (43) is provided corresponding to each upper pressing plate (4), and a temperature sensor, a heating element and a heating switch are provided in the hot oil tank.

4. A device for pressing a curved bamboo or wood component according to claim 1, characterized in that The jacks (2) and the middle cross beam (3) correspond to each closed frame (1) and are arranged in the plane of each closed frame (1). The lifting speeds of the jacks (2) in the multiple closed frames (1) are the same, and the jacks (2) are tension and compression jacks.

5. The device for pressing a curved bamboo or wood component according to claim 1, characterized in that The two side surfaces of the middle cross beam (3) are either in close sliding contact with the inner side surfaces of the columns (13), or rollers (33) are provided to be in close rolling contact with the inner side surfaces of the columns (13).

6. The device for pressing a curved bamboo or wood component according to claim 1, characterized in that The fixing holes (131) of the columns (13) on both sides of the closed frame (1) have the same height as the left and right columns.

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