Novel hydraulic shear

Abstract

According to the novel hydraulic shear, an upper shear blade is driven to descend through synchronous cooperation of a first oil cylinder and a second oil cylinder and is matched with a lower shear blade, and strip cutting is achieved. Through driving of the two oil cylinders, the problems that a belt head with the too large thickness cannot be cut off, the occupied space of a hydraulic shear is too large, cost saving is not facilitated, and the installation and maintenance difficulty is large can be solved. Moreover, through cooperation of the synchronizing mechanism, synchronous cooperative driving of the two oil cylinders can be guaranteed, and the jamming condition is prevented. And through cooperation of the upper clamping module and the lower clamping module, the strip can be in a fixed state during cutting, and the cutting effect of the strip is guaranteed. Through cooperation of the compression elastic assembly, rigid contact between the upper floating guide plate and the lower clamping module can be avoided, and therefore the service life of the upper floating guide plate and the service life of the lower clamping module are prolonged. Through cooperation of the anti-interference structure, when the upper shear blade and the lower shear blade are matched to cut the strip, the phenomenon that the transition structure for supporting the strip interferes with the upper shear blade, and the cutting effect and the service life of the upper shear blade are affected can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting mechanical equipment, in particular to a novel hydraulic shear used for a plate and strip rolling production line. Background Art

[0002] Hydraulic shears are typically installed at the front and rear of a strip mill to trim uneven strip heads. Strip thickness varies, and traditional hydraulic shears are often driven by a single cylinder. This results in: ① Strip heads that are too thick cannot be cut; ② Thick strips necessitate the use of large-diameter cylinders, resulting in excessive space for the hydraulic shears; ③ The large space occupied by the hydraulic shears often increases the length of the front and rear units, hindering cost savings; and ④ The large diameter of the cylinders also increases the size of the inlet and outlet pipes, making installation and maintenance more difficult. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a new type of hydraulic shear which can increase the shearing force without using a larger oil cylinder.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is as follows:

[0005] A new type of hydraulic shears, comprising an upper blade holder, a lower blade holder, an upper shear blade, a lower shear blade, a first connecting column, a second connecting column, a first oil cylinder, a second oil cylinder and a synchronization mechanism;

[0006] The lower knife seat is provided with a vertical slot;

[0007] The upper knife seat is arranged above the lower knife seat by inserting a first connecting post and a second connecting post into corresponding vertical slots;

[0008] The first connecting post is connected to the second connecting post via a synchronization mechanism;

[0009] The first oil cylinder and the second oil cylinder are respectively arranged on both sides of the lower knife seat, the cylinder body of the first oil cylinder and the cylinder body of the second oil cylinder are respectively fixed to the two sides of the lower knife seat, and the piston end of the first oil cylinder and the piston end of the second oil cylinder are respectively connected to the two sides of the upper knife seat;

[0010] The lower shear blade is mounted on the lower blade seat;

[0011] The upper shear blade is installed on the upper blade seat and is staggered with the lower shear blade. The upper shear blade rises and falls in cooperation with the first oil cylinder, the second oil cylinder and the synchronization mechanism.

[0012] In this technical solution, the first and second hydraulic cylinders work together to drive the upper blade holder and upper shear blade downward, thereby cooperating with the lower shear blade on the lower blade holder to cut the strip. Compared to using a single hydraulic cylinder, using two hydraulic cylinders can solve problems such as the inability to cut thick strips, the excessive space required by the hydraulic shears, the cost disadvantages, and the difficulty of installation and maintenance.

[0013] Moreover, through the cooperation of the synchronization mechanism, the two cylinders can be driven synchronously and collaboratively to prevent jamming.

[0014] Furthermore, the first connecting post and the second connecting post are both provided with strip-shaped teeth extending in the vertical direction;

[0015] The synchronization mechanism includes a bearing seat, a synchronization shaft, and a gear;

[0016] The synchronous shaft is connected to the lower knife seat through a bearing seat;

[0017] The gears are respectively mounted on both ends of the synchronization shaft and mesh with the teeth of the first connecting column and the second connecting column respectively.

[0018] Furthermore, a protective cover connected to the lower knife seat is provided on the periphery of the gear, which not only improves safety but also prevents dust from gathering at the meshing position between the gear and the corresponding connecting column, thereby affecting the smoothness of the fit between the gear and the corresponding connecting column.

[0019] Furthermore, it also includes a fixing structure for fixing the strip when cutting the strip, and the fixing structure includes an upper clamping module and a lower clamping module;

[0020] The upper clamping module is mounted on the upper tool holder and is placed on one side of the upper shear blade;

[0021] The lower clamping module is installed on the lower knife seat, placed on one side of the lower shear blade, and located below the upper clamping module.

[0022] In this technical solution, the cooperation between the upper clamping module and the lower clamping module can keep the strip in a fixed state during cutting, thereby ensuring the cutting effect of the strip.

[0023] Furthermore, the upper clamping module includes a compression elastic component and an upper floating guide plate;

[0024] The upper floating guide plate is connected to the upper knife seat through a compression elastic component, and cooperates with the lower clamping module to clamp the strip.

[0025] In this technical solution, by cooperating with the compression elastic component, the upper floating guide plate and the lower clamping module can be avoided from rigid contact, thereby increasing the service life of the upper floating guide plate and the lower clamping module.

[0026] Furthermore, the compression elastic component includes a first guide cover, a first guide rod, and a first disc spring;

[0027] The first guide cover is mounted on the upper knife seat;

[0028] A first limiting member and a first contact portion are respectively provided on the top and bottom of the first guide rod. The first guide rod passes through the first guide cover and is limited by the first limiting member.

[0029] The first disc spring is sleeved on the first guide rod, with the top of the first disc spring contacting the bottom of the first guide cover, and the bottom of the first disc spring contacting the first contact portion of the first guide rod;

[0030] The upper floating guide plate is installed at the bottom of the first guide rod.

[0031] Furthermore, the compression elastic component further includes an upper floating pressure plate;

[0032] The upper floating pressure plate is installed at the bottom of the first guide rod, and the bottom of the upper floating pressure plate is provided with a first limiting groove;

[0033] The upper floating guide plate is installed in the first limiting groove.

[0034] In this technical solution, the upper floating guide plate can be limited and fixed by the upper floating pressure plate.

[0035] Furthermore, an anti-interference structure is included. The anti-interference structure is installed on the lower knife seat and is placed on the side of the lower shearing blade away from the lower clamping module and below the upper shearing blade.

[0036] In this technical solution, through the cooperation of the anti-interference structure, not only can the uneven head of the strip be smoothly transitioned (the uneven head of the strip passes over the anti-interference structure) between the upper clamping module and the lower clamping module, but also the upper shear blade and the lower shear blade can cooperate to cut the strip to avoid interference between the structure supporting the transition of the strip (located on the lower knife seat) and the upper shear blade, which affects the cutting effect and the service life of the upper shear blade.

[0037] Furthermore, the anti-interference structure includes a second guide cover, a second guide rod, a second disc spring, a lower floating pressure plate, and a lower floating guide plate;

[0038] The second guide cover is mounted on the lower knife seat;

[0039] A second limiting member and a second abutment portion are respectively provided at the bottom and top of the second guide rod. The second guide rod passes through the second guide cover and is limited by the second limiting member.

[0040] The second disc spring is sleeved on the second guide rod, with the top of the second disc spring contacting the second contact portion of the second guide rod and the bottom of the second disc spring contacting the top of the second guide cover;

[0041] The lower floating pressure plate is installed on the top of the second guide rod, and a second limiting groove is provided on the top of the lower floating pressure plate;

[0042] The lower floating guide plate is installed in the second limiting groove.

[0043] Furthermore, the upper cutting blade is arranged at an angle, which can improve the cutting effect.

[0044] Compared with the existing technology, the principles and advantages of this technical solution are as follows:

[0045] 1. The first and second hydraulic cylinders work together synchronously to drive the upper blade holder and upper shear blade downward, thereby engaging the lower shear blade on the lower blade holder to cut the strip. Compared to a single hydraulic cylinder, using two hydraulic cylinders solves problems such as difficulty in shearing thick strips, excessive space requirements, cost constraints, and difficulty in installation and maintenance. Furthermore, the synchronization mechanism ensures the two cylinders work in sync, preventing jamming.

[0046] 2. By cooperating with the upper clamping module and the lower clamping module, the strip can be kept in a fixed state during cutting, ensuring the cutting effect of the strip.

[0047] 3. By compressing the elastic component, the upper floating guide plate and the lower clamping module can be prevented from rigid contact, thereby increasing the service life of the upper floating guide plate and the lower clamping module.

[0048] 4. Through the cooperation of the anti-interference structure, not only can the uneven strip head be smoothly transitioned (the uneven strip head passes over the anti-interference structure) to between the upper clamping module and the lower clamping module, but also the upper and lower shear blades can cooperate to cut the strip to avoid interference between the structure supporting the strip transition (located on the lower knife seat) and the upper shear blade, which affects the cutting effect and the service life of the upper shear blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the services required in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 This is a schematic diagram of the main view of a new hydraulic shear of the utility model;

[0051] Figure 2 for Figure 1 Side cross-sectional view at AA in the middle;

[0052] Figure 3 for Figure 1 Side cross-section diagram of the middle BB;

[0053] Figure 4 This is a side sectional view of the upper clamping module of the new hydraulic shears when not cutting;

[0054] Figure 5 This is a side sectional view of the upper clamping module part of a new hydraulic shear during shearing.

[0055] Reference numerals:

[0056] 1-upper tool holder; 2-lower tool holder; 3-upper shearing blade; 4-lower shearing blade; 5-first connecting column; 6-second connecting column; 7-first oil cylinder; 8-second oil cylinder; 9-bearing seat; 10-synchronizing shaft; 11-gear; 12-protective cover; 13-upper floating guide plate; 14-first guide cover; 15-first guide rod; 16-first disc spring; 17-upper floating pressure plate; 18-second guide rod; 19-second disc spring; 20-lower floating pressure plate; 21-lower floating guide plate; 22-fixed guide plate. DETAILED DESCRIPTION

[0057] The present invention will be further described below in conjunction with specific embodiments:

[0058] like Figures 1 to 5 As shown, the new hydraulic shears described in this embodiment include an upper blade holder 1, a lower blade holder 2, an upper shear blade 3, a lower shear blade 4, a first connecting column 5, a second connecting column 6, a first oil cylinder 7, a second oil cylinder 8, a synchronization mechanism, a fixing structure for fixing the strip when cutting the strip, and an anti-interference structure.

[0059] Among them, the lower tool seat 2 is provided with a vertical slot; the upper tool seat 1 is arranged above the lower tool seat 2 by inserting the first connecting column 5 and the second connecting column 6 into the corresponding vertical slot; the first connecting column 5 is connected to the second connecting column 6 through a synchronization mechanism; the first oil cylinder 7 and the second oil cylinder 8 are respectively arranged on both sides of the lower tool seat 2, and the cylinder body of the first oil cylinder 7 and the cylinder body of the second oil cylinder 8 are respectively fixed to the two sides of the lower tool seat 2, and the piston end of the first oil cylinder 7 and the piston end of the second oil cylinder 8 are respectively connected to the two sides of the upper tool seat 1; the lower shear blade 4 is installed on the lower tool seat 2; the upper shear blade 3 is obliquely installed on the upper tool seat 1 (the angle between the upper shear blade 3 and the horizontal is 2 degrees), and is staggered with the lower shear blade 4, and the upper shear blade 3 rises and falls with the cooperation of the first oil cylinder 7, the second oil cylinder 8 and the synchronization mechanism.

[0060] Specifically, in this embodiment, the first and second connecting posts 5 and 6 are each provided with a vertically extending strip of teeth. The synchronization mechanism includes a bearing block 9, a synchronization shaft 10, and a gear 11. The synchronization shaft 10 is connected to the lower blade holder 2 via the bearing block 9. The gears 11 are mounted at both ends of the synchronization shaft 10 and mesh with the teeth of the first and second connecting posts 5 and 6, respectively. A protective cover 12 is provided around the gear 11, which is connected to the lower blade holder 2.

[0061] Specifically, in this embodiment, the fixed structure includes a compression elastic component, an upper floating guide plate 13, and a fixed guide plate 22; wherein the compression elastic component is placed on one side of the upper shearing blade 3, and includes a first guide cover 14, a first guide rod 15, a first disc spring 16, and an upper floating pressure plate 17; the first guide cover 14 is installed on the upper knife seat 1; the top and bottom of the first guide rod 15 are respectively provided with a first limit piece and a first resistance part, the first guide rod 15 passes through the first guide cover 14 and is limited by the first limit piece; the first disc spring 16 is sleeved on the first guide rod 15, its top contacts the bottom of the first guide cover 14, and its bottom contacts the first resistance part of the first guide rod 15; the upper floating pressure plate 17 is installed at the bottom of the first guide rod 15, and the bottom of the upper floating pressure plate 17 is provided with a first limit groove; the upper floating guide plate 13 is installed in the first limit groove; the fixed guide plate 22 is installed on the lower knife seat 2, placed on one side of the lower shearing blade 4, and located below the upper floating guide plate 13.

[0062] Specifically, in this embodiment, the anti-interference structure is placed on the side of the lower shear blade 4 away from the fixed guide plate 22, which specifically includes a second guide cover, a second guide rod 18, a second disc spring 19, a lower floating pressure plate 20, and a lower floating guide plate 21; the second guide cover is installed on the lower knife seat 2; the bottom and top of the second guide rod 18 are respectively provided with a second limiting piece and a second interference portion, the second guide rod 18 passes through the second guide cover and is limited by the second limiting piece; the second disc spring 19 is sleeved on the second guide rod 18, its top contacts the second interference portion of the second guide rod 18, and its bottom contacts the top of the second guide cover; the lower floating pressure plate 20 is installed on the top of the second guide rod 18, and its top is provided with a second limiting groove; the lower floating guide plate 21 is installed in the second limiting groove.

[0063] The working principle of this embodiment is as follows:

[0064] When the strip needs to be cut, the strip head with uneven head passes over the anti-interference structure and reaches between the upper floating guide 13 and the fixed guide 22. Then, the first oil cylinder 7 and the second oil cylinder 8 cooperate synchronously to drive the upper knife seat 1, the upper shear blade 3, the compression elastic component, and the upper floating guide 13 to descend together. During the descent, the upper floating guide 13 first touches the fixed guide 22, and the upper floating guide 13 and the fixed guide 22 cooperate to clamp the strip head with uneven head. After the strip is fixed, the upper shear blade 3 cooperates with the lower shear blade 4 on the lower knife seat 2 to realize strip cutting and cut off the strip head with uneven head.

[0065] Compared with driving by one oil cylinder, driving by two oil cylinders can solve the problems of the belt head being too thick and unable to be cut, the hydraulic shear taking up too much space, being not conducive to cost saving, and being difficult to install and maintain.

[0066] Moreover, in the above process,

[0067] Through the cooperation of the synchronization mechanism, that is, the synchronization shaft 10 makes the gears 11 at both ends rotate synchronously, and the corresponding first connecting column 5 and the second connecting column 6 rise and fall synchronously, which can ensure that the two cylinders are driven synchronously and cooperatively to prevent jamming.

[0068] When the upper floating guide plate 13 touches the fixed guide plate 22, the upper floating guide plate 13 will be subjected to the reaction force of the fixed guide plate 22, and will rise up with the cooperation of the first guide cover 14, the first guide rod 15, the first disc spring 16, and the upper floating pressure plate 17, avoiding rigid contact between the upper floating guide plate 13 and the fixed guide plate 22, thereby improving the service life of the upper floating guide plate 13 and the fixed guide plate 22.

[0069] When the upper shearing blade 3 cooperates with the lower shearing blade 4 for cutting, the upper shearing blade 3 will contact the lower floating guide plate 21, giving the lower floating guide plate 21 a downward force, and the lower floating guide plate 21 drops down with the cooperation of the second guide cover, the second guide rod 18, the second disc spring 19, and the lower floating pressure plate 20, thereby avoiding interference between the structure supporting the transition of the strip (located on the lower knife seat 2) and the upper shearing blade 3, affecting the cutting effect and the service life of the upper shearing blade 3.

[0070] The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of hydraulic shear, characterized in that: It includes an upper knife seat, a lower knife seat, an upper shear blade, a lower shear blade, a first connecting column, a second connecting column, a first oil cylinder, a second oil cylinder and a synchronization mechanism; The lower knife seat is provided with a vertical slot; The upper knife seat is arranged above the lower knife seat by inserting a first connecting post and a second connecting post into corresponding vertical slots; The first connecting post is connected to the second connecting post via a synchronization mechanism; The first oil cylinder and the second oil cylinder are respectively arranged on both sides of the lower knife seat, the cylinder body of the first oil cylinder and the cylinder body of the second oil cylinder are respectively fixed to the two sides of the lower knife seat, and the piston end of the first oil cylinder and the piston end of the second oil cylinder are respectively connected to the two sides of the upper knife seat; The lower shear blade is mounted on the lower blade seat; The upper shear blade is installed on the upper blade seat and is staggered with the lower shear blade. The upper shear blade rises and falls in cooperation with the first oil cylinder, the second oil cylinder and the synchronization mechanism.

2. A new hydraulic shear according to claim 1, characterized in that: The first connecting post and the second connecting post are both provided with a strip-shaped tooth portion extending in a vertical direction; The synchronization mechanism includes a bearing seat, a synchronization shaft, and a gear; The synchronous shaft is connected to the lower knife seat through a bearing seat; The gears are respectively mounted on both ends of the synchronization shaft and mesh with the teeth of the first connecting column and the second connecting column respectively.

3. A new hydraulic shear according to claim 2, characterized in that: A protective cover connected to the lower knife seat is provided on the periphery of the gear.

4. A new hydraulic shear according to claim 1, characterized in that: It also includes a fixing structure for fixing the strip when cutting the strip, and the fixing structure includes an upper clamping module and a lower clamping module; The upper clamping module is mounted on the upper tool holder and is placed on one side of the upper shear blade; The lower clamping module is installed on the lower knife seat, placed on one side of the lower shear blade, and located below the upper clamping module.

5. A new hydraulic shear according to claim 4, characterized in that: The upper clamping module includes a compression elastic component and an upper floating guide plate; The upper floating guide plate is connected to the upper knife seat through a compression elastic component, and cooperates with the lower clamping module to clamp the strip.

6. A new hydraulic shear according to claim 5, characterized in that: The compression elastic component includes a first guide cover, a first guide rod, and a first disc spring; The first guide cover is mounted on the upper knife seat; A first limiting member and a first contact portion are respectively provided on the top and bottom of the first guide rod. The first guide rod passes through the first guide cover and is limited by the first limiting member. The first disc spring is sleeved on the first guide rod, with the top of the first disc spring contacting the bottom of the first guide cover, and the bottom of the first disc spring contacting the first contact portion of the first guide rod; The upper floating guide plate is installed at the bottom of the first guide rod.

7. A novel hydraulic shear according to claim 6, characterized in that: The compression elastic component also includes an upper floating pressure plate; The upper floating pressure plate is installed at the bottom of the first guide rod, and the bottom of the upper floating pressure plate is provided with a first limiting groove; The upper floating guide plate is installed in the first limiting groove.

8. A novel hydraulic shear according to any one of claims 4 to 7, characterized in that: The invention also includes an anti-interference structure, which is installed on the lower knife seat and is placed on the side of the lower shearing blade away from the lower clamping module and below the upper shearing blade.

9. A novel hydraulic shear according to claim 8, characterized in that: The anti-interference structure includes a second guide cover, a second guide rod, a second disc spring, a lower floating pressure plate, and a lower floating guide plate; The second guide cover is mounted on the lower knife seat; A second limiting member and a second abutment portion are respectively provided at the bottom and top of the second guide rod. The second guide rod passes through the second guide cover and is limited by the second limiting member. The second disc spring is sleeved on the second guide rod, with the top of the second disc spring contacting the second contact portion of the second guide rod and the bottom of the second disc spring contacting the top of the second guide cover; The lower floating pressure plate is installed on the top of the second guide rod, and a second limiting groove is provided on the top of the lower floating pressure plate; The lower floating guide plate is installed in the second limiting groove.

10. The novel hydraulic shear according to claim 1, characterized in that: The upper shearing blade is arranged inclined.

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