Lifting adjusting device for fourdrinier press roll

Abstract

The utility model discloses a fourdrinier press roll lifting adjusting device which comprises a swing arm frame transversely arranged on a supporting frame, the supporting frame comprises a bottom plate and a top beam, a lower pre-pressing roll is arranged on the bottom plate, an upper pre-pressing roll and a front press roll are arranged on the swing arm frame, the front end of the swing arm frame is hinged to the supporting frame, a first screw lifter is arranged on the top beam, and a second screw lifter is arranged on the top beam. A lifting screw of the first screw lifter is provided with a first hinge joint, and the tail end of the swing arm frame is movably connected with the first hinge joint through a first hinge support. A pressure spring is arranged between the top beam and the swing arm frame; a cantilever support is hinged to the portion, behind the swing arm support, of the supporting frame, a second screw lifter is arranged on the top beam, a second hinge joint is arranged at the tail end of a lifting screw of the second screw lifter, and the cantilever support is movably connected with the second hinge joint through a second hinge support and a pin shaft. A rear press roll is arranged on the cantilever frame; the device has the advantages that the structure is simple, the plate blank squeezing and dewatering effects are good, and the thickness and the water content of the pre-pressed plate blank can meet the production requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of high-density fiberboard long-web forming equipment, specifically a long-web press roller lifting and adjusting device. Background Technology

[0002] High-density fiberboard (HDF) is widely used in interior and exterior decoration, high-end car interior trim, wall panels, security doors, partitions, and other fields due to its excellent physical properties. In the initial stage of HDF production, the pre-formed board blanks need to be pre-pressed by press rollers (to squeeze out the moisture in the board blanks). Existing press rollers rely on hydraulic cylinders to achieve lifting and adjusting functions. Patent publication number CN219075957U discloses a HDF pre-pressing adjustment mechanism, specifically disclosing that both the front and rear press rollers adjust the pressing gap through hydraulic cylinders. However, this mechanism has problems such as complex structure, high maintenance costs, low adjustment accuracy, inconvenience of use, and the inability of the pre-pressed board blank thickness and moisture content to meet production requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a long-net press roller lifting and adjusting device with simple structure, low maintenance cost, high adjustment accuracy, convenient operation, and flexible use. It has a good pressing and dewatering effect on slabs and can make the thickness and moisture content of the pre-pressed slabs meet the production requirements, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a long-net press roller lifting and adjusting device, comprising a swing arm frame horizontally arranged on a support frame, the support frame including a base plate and a top beam, a longitudinal beam between the base plate and the top beam, a plurality of lower pre-pressing rollers arranged along the length of the base plate, upper pre-pressing rollers arranged at the corresponding positions of the swing arm frame, the swing arm frame being located between the base plate and the top beam, and the front end of the swing arm frame being hinged to the support frame, a screw jack that can swing in the left and right direction is arranged at the position corresponding to the end of the swing arm frame on the top beam, the end of the lifting screw of the screw jack is provided with a hinge joint, and the end of the swing arm frame is provided with a hinge support, the hinge support being connected by a pin. The shaft is movably connected to a hinge joint, and the hinge hole of the hinge joint is an elongated hole structure; the end of the swing arm frame is also provided with a front pressing roller; a compression spring is provided between the top beam and the swing arm frame; a cantilever frame is also hinged to the support frame behind the swing arm frame, and a screw jack II that can swing in the left and right direction is provided on the top beam at the position corresponding to the cantilever frame. The end of the lifting screw of the screw jack II is provided with a hinge joint II, and a hinge support II is provided on the cantilever frame. The hinge support II is movably connected to the hinge joint II through a pin, and the hinge hole of the hinge support II is a round hole structure; a rear pressing roller is provided on the cantilever frame, and a counter-pressing roller is provided on the bottom plate at the positions corresponding to the front pressing roller and the rear pressing roller.

[0005] Furthermore, the top beam is equipped with double-ear support plates at the positions corresponding to screw jack one and screw jack two. The double-ear support plates are rotatably connected to swing mounting seats via rotating shafts, and the fixed bases of screw jack one and screw jack two are respectively fixed on their corresponding swing mounting seats.

[0006] Furthermore, a spring adjustment assembly is provided at the bottom end of the top beam at the position corresponding to the spring. The spring adjustment assembly includes a support plate fixed on the top beam. A screw that can be raised and lowered in the vertical direction is threadedly connected to the support plate. The end of the screw passes through the support plate and is provided with an abutment part. The top of the spring abuts against the abutment part. A locking nut is also threadedly connected to the screw.

[0007] Furthermore, there are two screw jacks, one and two screw jacks, with the two screw jacks one and two screw jacks two symmetrically distributed front and back; the drive shafts of the screw jacks one are connected by a synchronous connecting rod via a coupling; the drive shafts of the screw jacks two are also connected by a synchronous connecting rod via a coupling.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This long-net press roller lifting and adjusting device uses the front press roller to pre-press and dehydrate the slab by its own weight, and applies pressure to the swing arm frame through the compression spring, forcing the front press roller to press the slab for moisture; the pressure applied to the swing arm frame by the compression spring can be adjusted by tightening the locking nut and screw; after pre-pressing and dehydrating by the front press roller, the slab is deeply pressed and dehydrated by the rear press roller; the structure is simple, the maintenance cost is low, the adjustment accuracy is high, the operation is convenient, the use is flexible and convenient, and the pressing and dehydration effect on the slab is good, so that the thickness and moisture content of the pre-pressed slab can meet the production requirements. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a partial enlarged view of the front press roller of this utility model;

[0011] Figure 3 This is a partial enlarged view of the rear press roller of this utility model;

[0012] Figure 4 This is a right view of the rear press roller of this utility model.

[0013] In the diagram: 1. Support frame; 11. Base plate; 12. Top beam; 121. Double-ear support plate; 122. Swing mounting seat; 13. Longitudinal beam; 2. Swing arm frame; 21. Upper pre-pressing roller; 22. Front press roller; 23. Hinge support one; 3. Lower pre-pressing roller; 4. Counter-pressing roller; 5. Compression spring adjustment assembly; 51. Support plate; 52. Screw; 53. Locking nut; 54. Abutment part; 6. Screw jack one; 61. Hinge joint one; 7. Cantilever frame; 71. Hinge support two; 72. Rear press roller; 8. Screw jack two; 81. Hinge joint two; 9. Compression spring; 10. Synchronous connecting rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0015] Please see Figure 1-4 This utility model provides a technical solution: a long-net press roller lifting and adjusting device, including a swing arm frame 2 horizontally arranged on a support frame 1. The support frame 1 includes a base plate 11 and a top beam 12. A longitudinal beam 13 is provided between the base plate 11 and the top beam 12. Multiple lower pre-pressing rollers 3 are provided on the base plate 11 along its length. Upper pre-pressing rollers 21 are provided at the positions corresponding to the lower pre-pressing rollers 3 on the swing arm frame 2. The swing arm frame 2 is located between the base plate 11 and the top beam 12, and the front end of the swing arm frame 2 is hinged to the support frame 1. Screw jacks 6 that can swing in the left and right direction are symmetrically arranged on the front and rear sides of the corresponding ends of the swing arm frame 2 on the top beam 12. The lifting screw ends of the screw jacks 6 are all provided with hinge joints 61. Hinge supports 23 are symmetrically arranged on the front and rear sides of the ends of the swing arm frame 2. The hinge supports 23 are movably connected to the hinge joints 61 through pins, and the hinge holes of the hinge joints 61 are elongated holes. The end of the swing arm frame 2 is also provided with a front press roller 22.

[0016] A compression spring 9 is provided between the top beam 12 and the swing arm frame 2; a compression spring adjustment assembly 5 is provided at the bottom end of the top beam 12 at the position corresponding to the compression spring 9. The compression spring adjustment assembly 5 includes a support plate 51 fixed on the top beam 12. A screw rod 52 that can be raised and lowered in the vertical direction is threadedly connected to the support plate 51. The end of the screw rod 52 passes through the support plate 51 and is provided with an abutment part 54. The top end of the compression spring 9 abuts against the abutment part 54. A locking nut 53 is also threadedly connected to the screw rod 52.

[0017] A cantilever frame 7 is hinged to the support frame 1 behind the swing arm frame 2. A screw jack 8, which can swing left and right, is symmetrically arranged on the top beam 12 on both the front and rear sides of the corresponding cantilever frame 7. The lifting screws of the screw jack 8 are each equipped with a hinge joint 81. Hinge supports 71 are symmetrically arranged on both the front and rear sides of the cantilever frame 7. The hinge supports 71 are movably connected to the hinge joints 81 via pins, and the hinge holes of the hinge supports 71 are circular. A rear pressing roller 72 is provided on the cantilever frame 7. A counter-pressing roller 4 is provided on the bottom plate 11 at positions corresponding to the front pressing roller 22 and the rear pressing roller 72.

[0018] Working principle:

[0019] The slab, after being laid out and formed, is conveyed between the upper pre-pressing roller 21 and the lower pre-pressing roller 3 by external conveying equipment. Since the screw jack 1 6 and screw jack 2 8 are movably connected to the top beam 12, the position height of the front pressing roller 22 can be adjusted by screw jack 1 6, and the position height of the rear pressing roller 72 can be adjusted by screw jack 2 8. Furthermore, since the hinge hole of the hinge joint 1 61 is an elongated hole structure, the swing arm 2 can float up and down. The front pressing roller 22 pre-presses and dehydrates the slab by its own weight, and the pressure is applied to the swing arm 2 by the compression spring 9, forcing the front pressing roller 22 to press the slab to remove moisture. The pressure applied to the swing arm 2 by the compression spring 9 can be adjusted by tightening the locking nut 53 and the screw 52. After pre-pressing and dehydrating by the front pressing roller 22, the slab is deeply pressed and dehydrated by the rear pressing roller 72. The pressing and dehydration effect on the slab is good, the structure is simple, and the use is flexible and convenient.

[0020] Furthermore, the top beam 12 is provided with double-ear support plates 121 at the positions corresponding to screw jack 6 and screw jack 8. The double-ear support plates 121 are rotatably connected to swing mounting seats 122 via rotating shafts, and the fixed bases of screw jack 6 and screw jack 8 are respectively fixed on their corresponding swing mounting seats 122.

[0021] Furthermore, the drive shafts of the screw jack 16 are connected by a synchronous connecting rod 10 via a coupling; the drive shafts of the screw jack 28 are also connected by a synchronous connecting rod 10 via a coupling; one of the screw jacks 16 and the screw jack 28 is equipped with a handwheel on its drive shaft, so the position and height of the front pressing roller 22 can be adjusted by driving the screw jack 16 on one side, and the position and height of the rear pressing roller 72 can be adjusted by driving the casing of the screw jack 28 on one side, making the adjustment flexible and convenient.

[0022] The long-net press roller lifting and adjusting device disclosed in this embodiment pre-presses and dehydrates the slab by its own weight, and applies pressure to the swing arm frame 2 by the compression spring 9, forcing the front press roller 22 to press the slab for moisture. The pressure applied to the swing arm frame 2 by the compression spring 9 can be adjusted by tightening the locking nut 53 and the screw 52. After pre-pressing and dehydrating by the front press roller 22, the slab is deeply pressed and dehydrated by the rear press roller 72. It has a good pressing and dehydrating effect on the slab, a simple structure, low maintenance cost, convenient adjustment and operation, and flexible and convenient use.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting and adjusting device for a long-wire press roller, comprising a swing arm frame laterally arranged on a support frame, the support frame including a base plate and a top beam, a longitudinal beam between the base plate and the top beam, a plurality of lower pre-pressing rollers arranged along the length of the base plate, and upper pre-pressing rollers arranged at the positions of the swing arm frame corresponding to the lower pre-pressing rollers, characterized in that: The swing arm is located between the base plate and the top beam, and its front end is hinged to the support frame. A screw jack that can swing in the left and right direction is provided on the top beam at the position corresponding to the end of the swing arm. The lifting screw of the screw jack is provided with a hinge joint. The end of the swing arm is provided with a hinge support. The hinge support is movably connected to the hinge joint through a pin, and the hinge hole of the hinge joint is an elongated hole structure. The end of the swing arm is also provided with a front press roller. A compression spring is provided between the top beam and the swing arm. A cantilever frame is hinged to the support frame behind the swing arm frame. A screw jack II, which can swing left and right, is provided on the top beam at the position corresponding to the cantilever frame. The lifting screw of the screw jack II is provided with a hinge joint II. A hinge support II is provided on the cantilever frame. The hinge support II is movably connected to the hinge joint II through a pin, and the hinge hole of the hinge support II is a round hole structure. A rear pressing roller is provided on the cantilever frame. A counter-pressing roller is provided on the bottom plate at the positions corresponding to the front pressing roller and the rear pressing roller.

2. The lifting and adjusting device for a long-net press roller according to claim 1, characterized in that: The top beam is equipped with double-ear support plates at the positions corresponding to screw jack one and screw jack two. The double-ear support plates are rotatably connected to swing mounting seats via rotating shafts, and the fixed bases of screw jack one and screw jack two are respectively fixed on their corresponding swing mounting seats.

3. The lifting and adjusting device for a long-net press roller according to claim 1, characterized in that: The bottom end of the top beam is provided with a spring adjustment assembly at the position corresponding to the spring. The spring adjustment assembly includes a support plate fixed on the top beam. A screw that can be raised and lowered in the vertical direction is threadedly connected to the support plate. The end of the screw passes through the support plate and is provided with an abutment part. The top of the spring abuts against the abutment part. A locking nut is also threadedly connected to the screw.

4. The lifting and adjusting device for a long-net press roller according to claim 1, characterized in that: There are two screw jacks, one and two screw jacks, with the two screw jacks one and two screw jacks being symmetrically distributed front and back. The drive shafts of the screw jacks one and two screw jacks two are connected by a synchronous connecting rod via a coupling. The drive shafts of the screw jacks two and two screw jacks two are also connected by a synchronous connecting rod via a coupling.

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