Continuous hot press

Abstract

The utility model belongs to the technical field of hot presses, and particularly relates to a continuous hot press which comprises an upper rack, a lower rack, a first steel belt, a second steel belt, a first pressing plate and a second pressing plate. The first steel belt is arranged on the upper rack, and the first pressing plate is arranged in the middle of the first steel belt; the second steel belt is arranged on the lower rack, and the second pressing plate is arranged in the middle of the second steel belt; the device is characterized by further comprising a lifting assembly, and the lifting assembly comprises a lifting shaft and a chain; the upper rack and the lower rack are in threaded connection through a plurality of lifting shafts, and the spiral direction of the lifting shafts and the upper rack is opposite to the spiral direction of the lifting shafts and the lower rack; each lifting shaft comprises a chain wheel arranged at the top of a shaft body and is in transmission connection with the chain wheels of all the lifting shafts through the same chain. The distance between the first pressing plate and the second pressing plate can be conveniently adjusted, and materials with different thicknesses can be hot-pressed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hot press, specifically relates to a continuous hot press. BACKGROUND

[0002] The continuous hot press is an important equipment for composite material forming and processing, such as wood processing, composite material manufacturing and plastic forming equipment. The continuous hot press processes materials into the required shape and performance through heating and pressing.

[0003] In the traditional hot press design, the equipment is usually composed of a base, a main frame, rotating rollers, a steel belt, a pressing plate and other core components. The rotating rollers drive the steel belt to move in a cycle, so that the materials pass through the heating and pressing area under the transmission of the steel belt, thereby realizing continuous processing.

[0004] When processing materials of different thicknesses, the pressing plate spacing needs to be adjusted to automatically adjust the processing thickness. However, the distance between the pressing plates of the current hot press is fixed and cannot be conveniently adjusted.

[0005] The traditional pressing machine needs to use auxiliary tools to move the pressing plate out of the pressing machine, and the pressing plate needs to be installed on the base through the auxiliary tools during installation. The pressing plate maintenance or steel belt replacement is inconvenient.

[0006] Since the pressing plate requires high temperature during work, temperature changes may cause deformation of the rack, affecting the accuracy of the whole machine.

[0007] The prior art CN116604918A discloses a continuous hot press, which relates to the technical field of composite material processing. The continuous hot press comprises an upper rack, a lower rack, a rotating pressing roller assembly and a pressing plate mechanism. The pressing plate mechanism comprises a first pressing plate and a second pressing plate. The rotating pressing roller assembly comprises a first tensioning mechanism and a first driven roller. The first tensioning mechanism is drivingly connected to the first driven roller. When the hot press is used for hot pressing operation, the first tensioning mechanism is used to drive the first driven roller to move towards the pressing plate mechanism. When transporting, the first tensioning mechanism is used to drive the first driven roller to move away from the pressing plate mechanism. The bottom of the second pressing plate is provided with a sliding block, and the second pressing plate is slidingly fitted on the guide rail of the lower rack based on the sliding block. The upper rack is provided with a lifting mechanism. One end of the lifting mechanism is fixed to the upper rack, and the other end is connected to the upper pressing plate. The lifting mechanism comprises a piston rod. The first pressing plate is connected to the upper rack based on the piston rod. The lifting mechanism of the prior art is lifted based on the principle of the piston rod. UTILITY MODEL CONTENTS

[0008] In order to solve the technical problems of "the prior art cannot conveniently adjust the distance between the pressing plates; the pressing plate maintenance is inconvenient", the utility model provides the following technical solutions:

[0009] A continuous hot press, comprising an upper rack, a lower rack, a first steel belt, a second steel belt, a first pressing plate and a second pressing plate; the first steel belt is arranged on the upper rack, and the first pressing plate is arranged on the middle part of the first steel belt; the second steel belt is arranged on the lower rack, and the second pressing plate is arranged on the middle part of the second steel belt; characterized in that further comprising a lifting assembly, the lifting assembly comprises lifting shafts and chains; the upper rack and the lower rack are threadedly connected through a plurality of lifting shafts, and the screw direction of the lifting shafts and the upper rack is opposite to the screw direction of the lifting shafts and the lower rack; the lifting shafts comprise sprockets arranged on the top of the shaft bodies, and are drivingly connected with the sprockets of all the lifting shafts through the same chain.

[0010] Further, the lifting shafts are connected by upper shaft bodies, middle shaft bodies and lower shaft bodies.

[0011] Further, the middle shaft bodies are connected by two half shafts.

[0012] Further, the lower shaft bodies are straight screws.

[0013] Further, the upper shaft bodies are spline shafts.

[0014] Further, the bottom end of the middle shaft body is connected with the top end of the lower shaft body in sequence from top to bottom through a sleeve and a clamping nut.

[0015] Further, the thread connecting the lower shaft body and the clamping nut is left-handed thread.

[0016] Further, the top end of the middle shaft body is connected with the bottom end of the upper shaft body in sequence from bottom to top through a sleeve and a clamping nut.

[0017] Further, the thread connecting the upper shaft body and the clamping nut is right-handed thread.

[0018] Further, the top end of the upper shaft body is connected with a spline sleeve, a bearing and a sprocket in sequence from bottom to top; and the chain is meshingly connected with the sprocket.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] 1. The sprocket of the lifting shaft is drivingly connected through the same chain; and the chain is connected with a driving device, the driving device drives the chain to move, drives the sprocket of the lifting shaft to rotate synchronously, and drives the lifting shaft to lift synchronously.

[0021] The upper rack and the lower rack are away from each other under the screw transmission of the lifting shaft, and the first pressing plate and the second pressing plate are lifted to adjust the distance between the first pressing plate and the second pressing plate to be larger; on the contrary, the upper rack and the lower rack are closer to each other under the screw transmission of the lifting shaft, and the first pressing plate and the second pressing plate are lifted to adjust the distance between the first pressing plate and the second pressing plate to be smaller. In this way, the distance between the first pressing plate and the second pressing plate can be conveniently adjusted, and materials with different thicknesses can be hot-pressed.

[0022] 2. When the pressing plate needs to be maintained or the steel belt is replaced, the clamping nut is loosened, the sleeve is loosened, the half shaft of the lifting shaft on the front side is removed, and the two half shafts are taken away, so that the pressing plate can be easily moved to the outside of the press; or the steel belt is replaced. The online moving-out of the pressing plate is realized, and time and space are saved.

[0023] 3. The distance between the upper rack, the lower rack and the pressing plate can be increased through the lifting shaft, so that the influence of the temperature from the pressing plate is reduced, and the deformation of the rack caused by the change of the temperature is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the continuous hot press of the utility model;

[0025] Figure 2 It is a front view of the continuous hot press of the utility model;

[0026] Figure 3 It is a left view of the continuous hot press of the utility model;

[0027] Figure 4 It is a structure schematic view of the lifting shaft of the utility model;

[0028] Figure 5 It is an installation schematic view of the lifting shaft of the utility model.

[0029] REFERENCE SIGNS:

[0030] 10 is a base; 20 is an upper rack; 30 is a lower rack; 40 is a rotating pressing roller assembly; 50 is a pressing plate mechanism; 60 is a lifting assembly;

[0031] 41 is a first sub-rotating pressing roller assembly; 42 is a second sub-rotating pressing roller assembly; 411 is a first steel belt; 412 is a first rotating roller; 421 is a second steel belt; 422 is a second rotating roller;

[0032] 51 is a first pressing plate; 52 is a second pressing plate;

[0033] 61 is a lifting shaft; 62 is a chain; 63 is a hydraulic motor; 611 is an upper shaft body; 612 is a middle shaft body; 613 is a lower shaft body; 614 is a half shaft; 615 is a sleeve; 616 is a clamping nut; 617 is a spline sleeve; 618 is a bearing; and 619 is a chain wheel. Detailed Implementation

[0034] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Example

[0037] Combination Figures 1-5 As shown, this utility model provides a continuous hot press, which consists of a base 10, an upper frame 20, a lower frame 30, a rotating pressure roller assembly 40, a pressure plate mechanism 50, and a lifting assembly 60.

[0038] The pressure plate mechanism 50 is located in the middle part of the rotating pressure roller assembly 40. The rotating pressure roller assembly 40 includes a first sub-rotating pressure roller assembly 41 disposed on the upper frame 20 and a second sub-rotating pressure roller assembly 42 disposed on the lower frame 30. The two work together to transport the workpiece to be processed to the pressure plate mechanism 50 for hot pressing.

[0039] The first sub-rotating pressure roller assembly 41 includes a first steel belt 411 and a first rotating roller 412, with the first rotating roller 412 slidably connected to the first steel belt 411; the first rotating roller 412 provides power to drive the first steel belt 411 to move.

[0040] The second rotating pressure roller assembly 42 includes a second steel belt 421 and a second rotating roller 422, with the second rotating roller 422 slidably connected to the second steel belt 421; the second rotating roller 422 provides power to drive the second steel belt 421 to move.

[0041] The first steel strip 411 and the second steel strip 421 move in opposite directions. Together, they transport the workpiece to be processed to the pressure plate mechanism 50. After hot pressing, they jointly transport the workpiece out.

[0042] The pressure plate mechanism 50 includes a first pressure plate 51 and a second pressure plate 52, with a preset gap between them. The first pressure plate 51 is positioned above the second pressure plate 52 and is used to hot-press the workpiece to be processed; its size can completely cover the workpiece.

[0043] Lifting assembly 60, including lifting shaft 61, chain 62, hydraulic motor 63;

[0044] The upper rack 20 and the lower rack 30 are connected by the front and rear rows of the plurality of lifting shafts 61. In this embodiment, there are 8 lifting shafts 61. The 8 lifting shafts 61 are driven synchronously by the same chain 62.

[0045] As shown in Figure 4 The lifting shaft 61 is composed of the upper shaft body 611, the middle shaft body 612 and the lower shaft body 613.

[0046] The middle shaft body 612 is connected by two half shafts 614;

[0047] The lower shaft body 613 is a straight screw rod;

[0048] The upper shaft body 611 is a spline shaft.

[0049] The lifting shaft 61 further includes a sleeve 615, a clamping nut 616, a spline sleeve 617, a bearing 618 and a sprocket 619;

[0050] The bottom end of the middle shaft body 612 is connected to the top end of the lower shaft body 613 in sequence from top to bottom through the sleeve 615 and the clamping nut 616, and the thread connected between the lower shaft body 613 and the clamping nut 616 is left-handed thread;

[0051] The top end of the middle shaft body 612 is connected to the bottom end of the upper shaft body 611 in sequence from bottom to top through the sleeve 615 and the clamping nut 616, and the thread connected between the upper shaft body 611 and the clamping nut 616 is right-handed thread;

[0052] In another specific embodiment, the thread of the lower shaft body 613 and the thread of the upper shaft body 611 are opposite in rotation direction, and the thread connected between the lower shaft body 613 and the clamping nut 616 can also be right-handed thread (positive thread), and the thread connected between the upper shaft body 611 and the clamping nut 616 is left-handed thread (reverse thread);

[0053] The top end of the upper shaft body 611 is connected to the spline sleeve 617, the bearing 618 and the sprocket 619 in sequence from bottom to top. The top end of the upper shaft body 611 is matched with the spline sleeve 617 through spline to realize torque transmission. The bearing 618 is located above the spline sleeve 617 to support the sprocket 619 and reduce radial / axial load. The sprocket 619 is meshed with the chain 62, and the sprocket 619 is driven to rotate by the hydraulic motor 63. Through the cooperative design of the spline sleeve 617, the bearing 618 and the sprocket 619, combined with the driving of the hydraulic motor 63, efficient and stable power transmission is realized.

[0054] The shaft body part of the lower shaft body 613 is threadedly connected with the lower rack 30, and the shaft body part of the upper shaft body 611 is threadedly connected with the upper rack 20.

[0055] The sprockets 619 of the eight lifting shafts 61 are connected by the same chain 62. The chain 62 is connected to a drive device, which is a hydraulic motor 63. A sprocket is mounted on the output shaft of the hydraulic motor 63, and the chain 62 meshes with the sprocket, transmitting the rotational motion of the hydraulic motor 63 to the chain 62. The hydraulic motor 63 drives the chain 62 to move, causing the sprockets of the eight lifting shafts 61 to rotate synchronously, thus causing the eight lifting shafts 61 to rise and fall synchronously.

[0056] When chain 62 drives in the right (forward) direction, the distance between the upper frame 20 and the lower frame 30 increases under the screw drive of the lifting shaft 61, causing the first pressure plate 51 and the second pressure plate 52 to rise and fall, thus increasing the distance between them. Conversely, when the chain 62 drives in the opposite direction, the distance between the upper frame 20 and the lower frame 30 decreases under the screw drive of the lifting shaft 61, causing the first pressure plate 51 and the second pressure plate 52 to rise and fall, thus decreasing the distance between them. This allows for adjustment of the distance between the first pressure plate 51 and the second pressure plate 52, enabling the hot pressing of materials of different thicknesses.

[0057] With the upper frame 20 and lower frame 30 stable, loosen the ferrule 615 and tighten the nut 616, disassemble the two half-shafts 614 of the central shaft body 612, and directly remove the two half-shafts 614. This avoids space constraints and facilitates the entry, exit, or maintenance of the first pressure plate 51 and the second pressure plate 52.

[0058] The above technical features constitute the preferred embodiment of this utility model, which has strong adaptability and optimal implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the needs of different situations.

[0059] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A continuous hot press, comprising an upper frame, a lower frame, a first steel strip, a second steel strip, a first pressure plate, and a second pressure plate; the first steel strip is disposed on the upper frame, and the first pressure plate is disposed in the middle portion of the first steel strip; the second steel strip is disposed on the lower frame, and the second pressure plate is disposed in the middle portion of the second steel strip; characterized in that, It also includes a lifting assembly, which includes a lifting shaft, a chain, and a drive device; the upper frame and the lower frame are connected by multiple lifting shafts through threads, and the spiral direction of the lifting shaft and the upper frame is opposite to the spiral direction of the lifting shaft and the lower frame; the lifting shaft includes a sprocket set at the top of its shaft body, which is connected to the sprockets of all the lifting shafts through the same chain; and the chain is connected to the drive device.

2. The continuous hot press according to claim 1, characterized in that, The lifting shaft is composed of an upper shaft, a middle shaft, and a lower shaft connected together.

3. The continuous hot press according to claim 2, characterized in that, The central axis is formed by two half-shafts that are joined together.

4. The continuous hot press according to claim 2, characterized in that, The lower shaft is a straight screw.

5. The continuous hot press according to claim 2, characterized in that, The upper shaft is a spline shaft.

6. The continuous hot press according to claim 2, characterized in that, The lifting shaft also includes a retaining sleeve and a clamping nut; the bottom end of the middle shaft is connected to the top end of the lower shaft from top to bottom through the retaining sleeve and the clamping nut.

7. The continuous hot press according to claim 6, characterized in that, The thread connecting the lower shaft to the clamping nut is a left-hand thread.

8. The continuous hot press according to claim 2, characterized in that, The lifting shaft also includes a retaining sleeve and a clamping nut; the top of the middle shaft is connected to the bottom of the upper shaft from bottom to top through the retaining sleeve and the clamping nut.

9. The continuous hot press according to claim 8, characterized in that, The thread connecting the upper shaft to the clamping nut is a right-hand thread.

10. The continuous hot press according to claim 5, characterized in that, The lifting shaft also includes a spline sleeve, bearings, and sprockets; the top of the upper shaft is connected to the spline sleeve, bearings, and sprockets from bottom to top; the chain is engaged with the sprockets.

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