A double-sided shears blade push-pull positioning device

Abstract

The present application relates to the field of blade push-pull positioning, in particular to a double-sided shear blade push-pull positioning device, which comprises a fixed table, two sets of fixed sleeves detachably installed on the top outer surface of the fixed table, an outer expansion sleeve fixedly installed on the side surface of the fixed table, a matched swing arm plate threadedly movably sleeved on the outer surface of the outer expansion sleeve, a threaded lifter fixedly installed on the side surface of the outer expansion sleeve, and a crowbar movably sleeved on the outer surface of the threaded lifter. After the position of the crowbar is positioned, the hydraulic rod II is used to push the semicircular arc plates, which are tightly matched on the outer surface of the crowbar. The friction and clamping force between the semicircular arc plates and the crowbar are increased by the anti-skid pads on the inner side wall of the semicircular arc plates. While the crowbar is being pulled and rotated, it will not shake too much, and the crowbar will not slide on the surface of the limiting sleeve II due to the pulling of the matched sleeve.

Description

Technical Field

[0001] This invention belongs to the field of blade push-pull positioning technology, specifically a blade push-pull positioning device for changing blades in a double-sided scissor. Background Technology

[0002] The double-sided shear for heavy plates in metallurgical enterprises consists of a fixed shear and a mobile shear. These two shears are installed opposite each other on the same base. Each shear has longitudinal shears for cutting edges and scrap shears for cutting waste edges. They are each driven by a main motor through a gear transmission device and three parallel crankshafts.

[0003] Currently, in existing double-sided shearing processes, blades need to be replaced every 30,000 blades, averaging twice a week. When replacing old and new blades, operators typically use a pry bar or their hands to push and pull the blades. Using a pry bar with a free rod as a fulcrum can easily cause the pry bar to slip, potentially leading to instability and falls. When using a pry bar as a fulcrum to pry the blades, to prevent the blades from returning to their original position due to their own weight, the operator needs to continuously pull the pry bar to keep it in a tilted position. Moreover, there is a certain locking force between the blades and the equipment, requiring more force to manually pry the blades off the equipment. Pushing the blades directly by hand is very strenuous for one person and can easily cause hand injuries.

[0004] Therefore, the present invention provides a blade push-pull positioning device for changing blades in a double-sided scissor. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a blade push-pull positioning device for double-sided shear blade changing, comprising a fixed platform and two sets of fixed housings detachably mounted on the outer surface of the top of the fixed platform, an outward housing fixedly mounted on one side surface of the fixed platform, a sliding arm plate threadedly and movably sleeved on the outer surface of the outward housing, a threaded lifter fixedly mounted on one side surface of the outward housing, a pry bar movably sleeved on the outer surface of the threaded lifter, a limiting slider movably sleeved on the outer surface of the two sets of fixed housings, a motor two fixedly mounted on the top surface of one set of fixed housings, a threaded rod two movably sleeved on the inner wall of the fixed housing fixedly mounted on the output end of the motor two, a limiting rod two fixedly mounted on the inner wall of the other set of fixed housings, a limiting housing one movably sleeved on the outer surface of the limiting slider, a hydraulic rod one detachably mounted on the inner wall of the limiting housing one, a strap fixedly connected to the output end of the hydraulic rod one, and a sleeve movably sleeved on the outer surface of the strap fixedly connected to the outer surface of the pry bar.

[0007] Preferably, a slider is movably sleeved on the inner wall of the threaded lifting device, a rotating shaft is movably sleeved on the outer surface of the slider, and a limiting sleeve two is fixedly connected to the outer surface of the rotating shaft and movably sleeved on the outer surface of the pry bar.

[0008] Preferably, a trapezoidal overlapping platform is fixedly installed on the inner surface of the threaded lifting device and at the bottom edge position, and a snap-fit ​​groove is formed on the top surface of the trapezoidal overlapping platform.

[0009] Preferably, a hydraulic rod two is symmetrically fixedly installed on the inner wall of the limiting sleeve two, and a semi-circular arc plate is fixedly connected to the output end of the hydraulic rod two.

[0010] Preferably, an anti-slip pad is provided on the outer surface of the semi-circular arc plate and is movably sleeved on the outer surface of the pry bar. An anti-sway sleeve is fixedly connected to the inner wall of the limiting sleeve two and at the upper and lower edges of the hydraulic rod two and the semi-circular arc plate.

[0011] Preferably, an anti-slip soft plate is provided on the outer surface of the fitting swing arm plate, a caster wheel is provided on the bottom surface of the fitting swing arm plate, and a double-hole slider is fixedly installed on one side surface of the fitting swing arm plate.

[0012] Preferably, a motor is fixedly installed on one side surface of the outer sleeve, a limit rod is provided on the inner wall of the outer sleeve, and a threaded rod is fixedly connected to the output end of the motor, which is provided on the inner wall of the outer sleeve. The outer surfaces of the threaded rod and the limit rod are movably sleeved on the inner wall of the double-hole slider.

[0013] Preferably, a slot is formed on the outer surface of the fixed sleeve, the outer surface of the limiting slider is movably sleeved on the inner wall of the slot, and the outer surfaces of the threaded rod II and the limiting rod II are movably sleeved on the outer surface of the limiting slider.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. The present invention provides a blade push-pull positioning device for changing blades in a double-sided scissor. After the blade is removed from the surface of the equipment, the new blade is placed at the interface of the cutting equipment. The motor rotates a pair of threaded rods, and the double-hole sliders on the outer surfaces of the threaded rods and the limiting rods move towards the middle position of the pry bar. The anti-slip soft plate on the surface of the swing arm plate adheres to both sides of the new blade. The new blade is at the same height and angle as the equipment interface. Then, one end of the pry bar is engaged in the positioning slot of the new blade. The hydraulic rod pushes the sleeve in the opposite direction, so that the pry bar rotates around the limiting sleeve as the fulcrum, pushing the new blade into the docking slot of the equipment for blade engagement. This achieves the effect of reinstalling the new blade by using two clamping plates to form a horizontal intersecting angle between the new blade and the equipment interface without the need for manual support and positioning.

[0016] 2. The blade push-pull positioning device for double-sided shear blade changing described in this invention, in conjunction with the worker moving the fixed platform and the fitting swing arm plate to the two sides of the blade, uses the 30 mm diameter positioning slots on both ends of the blade to engage with one end of the pry bar, and uses the limiting sleeve two on the outer surface of the pry bar and the threaded lifting device to form a support point, and uses the hydraulic rod to pull the fitting sleeve on the outer surface of the strap, the pry bar rotates with the limiting sleeve two as the support point, pushes the blade on one end of the pry bar, and pushes the blade off the surface of the cutting equipment, while the hydraulic rod one, in conjunction with the strap, deforms the bending between the fitting sleeve and the output end of the hydraulic rod one;

[0017] 3. The blade push-pull positioning device for double-sided shear blade changing described in this invention, after the pry bar slides inside the limiting sleeve two, the position of the pry bar needs to be positioned, and then the semi-circular plate is pushed in conjunction with the hydraulic rod two. The semi-circular plate is tightly attached to the outer surface of the pry bar. At this time, the anti-slip pad on the inner wall of the semi-circular plate increases the friction and locking force between it and the surface of the pry bar. When the pry bar is pulled and rotated, there will be no excessive shaking force. The pry bar will not slide on the surface of the limiting sleeve two due to the pulling of the sleeve.

[0018] 4. The blade push-pull positioning device for double-sided shear blade replacement described in this invention, when the friction between the blade and the equipment components is too great or the blade interface is slightly bent, making it difficult to remove the blade, coordinates with motor two to rotate threaded rod two. The limiting slider moves upward on the surface of limiting rod two and threaded rod two, and the end of the sleeve fits against the edge of the other end of the pry bar, increasing the pulling force of the lever arm and generating a greater pushing force on the other end of the pry bar. This achieves the effect of using the force applied by the long arm end to be transmitted to the fulcrum through a longer lever arm, which can pry heavier objects and push the blade out of the equipment. It can also improve the effect of generating a greater pulling force by changing the height of hydraulic rod one, so that one end of the pry bar will not be affected by excessive bending force and bending angle. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a perspective view of the folding and closing of the fitting swing arm plate in this invention;

[0022] Figure 3 This is a sectional perspective view of the fixed platform in this invention;

[0023] Figure 4 This is a two-section perspective view of the limiting sleeve in this invention;

[0024] Figure 5 This is a three-dimensional view of the fitted swing arm plate in this invention.

[0025] Figure 6 This is a perspective view of the fixed casing in this invention;

[0026] Figure 7 This is a perspective view of the threaded lifting device in this invention.

[0027] In the diagram: 11. Fixed platform; 12. Outer sleeve; 121. Limiting rod one; 122. Threaded rod one; 123. Motor one; 13. Fixed sleeve; 131. Empty slot; 132. Limiting slider; 133. Limiting rod two; 134. Threaded rod two; 135. Motor two; 136. Limiting sleeve one; 137. Hydraulic rod one; 138. Strap; 139. Fitting sleeve; 14. Fitting swing arm plate; 141. Universal wheel; 142. Fitting anti-slip soft plate; 143. Double hole slider; 15. Threaded lifter; 151. Slider; 152. Rotating shaft; 153. Limiting sleeve two; a1. Anti-sway plate; a2. Hydraulic rod two; a3. Semi-circular arc plate; a4. Anti-slip pad; 154. Trapezoidal overlapping platform; 155. Snap-fit ​​groove; 16. Pry bar. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figures 1 to 3 and Figure 5 - Figure 7 As shown, an embodiment of the present invention provides a blade push-pull positioning device for double-sided shear blade changing, comprising a fixed platform 11 and two sets of fixed housings 13 detachably mounted on the outer surface of the top of the fixed platform 11, an outward housing 12 fixedly mounted on one side surface of the fixed platform 11, a sliding arm plate 14 threadedly fitted onto the outer surface of the outward housing 12, a threaded lifter 15 fixedly mounted on one side surface of the outward housing 12, a pry bar 16 movably fitted onto the outer surface of the threaded lifter 15, and limit sliders 132 movably fitted onto the outer surfaces of the two sets of fixed housings 13. The top of one set of fixed housings 13... A motor 135 is fixedly mounted on the surface. A threaded rod 134 is fixedly mounted on the output end of the motor 135 and is movably sleeved on the inner wall of the fixed housing 13. A limit rod 133 is fixedly mounted on the inner wall of another set of fixed housings 13. A limit housing 136 is movably sleeved on the outer surface of the limit slider 132. A hydraulic rod 137 is detachably mounted on the inner wall of the limit housing 136. A strap 138 is fixedly connected to the output end of the hydraulic rod 137. A fitting sleeve 139 is fixedly connected to the outer surface of the strap 138 and is movably sleeved on the outer surface of the pry bar 16.

[0030] The staff moves the fixed platform 11 and the fitting swing arm plate 14 to the two sides of the blade. At this time, the 30 mm diameter positioning slots on both ends of the blade are used to engage with one end of the pry bar 16. The limiting sleeve 153 on the outer surface of the pry bar 16 and the threaded lifter 15 form a support point. At this time, the hydraulic rod 137 pulls the fitting sleeve 139 on the outer surface of the strap 138. The pry bar 16 rotates with the limiting sleeve 153 as the support point, pushing the blade on one end of the pry bar 16 and pushing the blade off the surface of the cutting equipment. While the hydraulic rod 137 is pulling, the strap 138 also deforms the bending between the fitting sleeve 139 and the output end of the hydraulic rod 137.

[0031] If the friction between the blade and the equipment components is too great or the blade interface is slightly bent, making it difficult to remove the blade, the motor 135 rotates the threaded rod 134. The limiting slider 132 moves upward on the surfaces of the limiting rod 133 and the threaded rod 134, and one end of the sleeve 139 comes into contact with the edge of the other end of the pry bar 16, increasing the pulling force of the lever arm and generating a greater pushing force on the other end of the pry bar 16. This achieves the effect of using the force applied by the long arm end to be transmitted to the fulcrum through the longer lever arm, thereby being able to pry up heavier objects and push the blade out of the equipment. The height of the hydraulic rod 137 can also be changed to prevent the end of the pry bar 16 from bending due to excessive bending force and bending angle, thus increasing the pulling force generated by the hydraulic rod 137. This avoids the situation where the blade is slightly deformed and there is excessive friction between the blade and the equipment, making it impossible for employees to squeeze and push the blade off the surface of the cutting equipment for replacement using the pry bar.

[0032] like Figure 1 - Figure 3 and Figure 5 - Figure 6 As shown, a non-slip soft plate 142 is provided on the outer surface of the sliding arm plate 14, a caster wheel 141 is provided on the bottom surface of the sliding arm plate 14, a double-hole slider 143 is fixedly installed on one side surface of the sliding arm plate 14, a motor 123 is fixedly installed on one side surface of the outward sleeve 12, a limit rod 121 is provided on the inner wall of the outward sleeve 12, a threaded rod 122 is fixedly connected to the output end of the motor 123, the outer surfaces of the threaded rod 122 and the limit rod 121 are movably sleeved on the inner wall of the double-hole slider 143, a slot 131 is opened on the outer surface of the fixed sleeve 13, the outer surface of the limit slider 132 is movably sleeved on the inner wall of the slot 131, and the outer surfaces of the threaded rod 134 and the limit rod 133 are movably sleeved on the outer surface of the limit slider 132.

[0033] After the blade is removed from the surface of the equipment, the new blade is aligned with the interface of the cutting equipment. Motor 123 rotates the threaded rod 122, causing the double-hole slider 143 on the outer surface of the threaded rod 122 and the limiting rod 121 to move towards the center of the pry bar 16. The anti-slip soft plate 142 on the surface of the sway arm plate 14 adheres to both sides of the new blade, bringing the new blade to the same height and angle as the equipment interface. Then, one end of the pry bar 16 is engaged inside the positioning groove of the new blade. Hydraulic rod 137 pushes the fitting sleeve 139 in the opposite direction, causing the pry bar 16 to move towards the center of the cutting equipment. Using the housing 153 as a fulcrum, the new blade is rotated to push it into the docking slot of the equipment, thus locking the blade in place. This achieves the effect of using two clamping plates to make the new blade and the interface of the equipment form a horizontal intersection angle, eliminating the need for manual support and positioning, and allowing for the reinstallation of the new blade. This avoids the need for one employee to hold the new blade upright and another employee to push it in place for effective installation, which wastes manpower and requires a high degree of coordination between the two employees, otherwise, it will result in wasted effort and the new blade cannot be installed effectively.

[0034] like Figures 1 to 5 and Figure 7 As shown, hydraulic rods a2 are symmetrically fixedly installed on the inner wall of the limiting sleeve 153. A semi-circular plate a3 is fixedly connected to the output end of the hydraulic rod a2. An anti-slip pad a4 is provided on the outer surface of the semi-circular plate a3 and is movably sleeved on the outer surface of the pry bar 16. An anti-sway sleeve a1 is fixedly connected to the inner wall of the limiting sleeve 153 and at the upper and lower edges of the hydraulic rod a2 and the semi-circular plate a3. A slider 151 is movably sleeved on the inner wall of the threaded lifter 15. A rotating shaft 152 is movably sleeved on the outer surface of the slider 151. A limiting sleeve 153 is fixedly connected to the outer surface of the rotating shaft 152 and is movably sleeved on the outer surface of the pry bar 16. A trapezoidal overlapping platform 154 is fixedly installed on the inner surface of the threaded lifter 15 and at the bottom edge. A snap-fit ​​groove 155 is opened on the top surface of the trapezoidal overlapping platform 154.

[0035] After the pry bar 16 slides inside the limiting sleeve 153, when it is necessary to position the pry bar 16, the hydraulic rod 2 a2 pushes the semi-circular plate a3. The semi-circular plate a3 fits tightly against the outer surface of the pry bar 16. At this time, the anti-slip pad a4 on the inner wall of the semi-circular plate a3 increases the friction and locking force between it and the surface of the pry bar 16. While the pry bar 16 is being pulled and rotated, there will be no excessive shaking force. The pry bar 16 will not slide on the surface of the limiting sleeve 153 due to the pulling of the sleeve 139.

[0036] Working principle: When the fixed platform 11 and the fitting swing arm plate 14 are moved to the two sides of the blade, the positioning slots with a diameter of 30 mm on both ends of the blade are engaged with one end of the pry bar 16. At this time, the limiting sleeve 153 on the outer surface of the pry bar 16 and the threaded lifting device 15 form a support point. At this time, the hydraulic rod 137 pulls the fitting sleeve 139 on the outer surface of the strap 138. The pry bar 16 rotates with the limiting sleeve 153 as the support point, pushing the blade on one end of the pry bar 16 and pushing the blade off the surface of the cutting equipment. While the hydraulic rod 137 is pulling, it also works with the strap 138 to deform the bending between the fitting sleeve 139 and the output end of the hydraulic rod 137.

[0037] If the friction between the blade and the equipment components is too great or the blade interface is slightly bent, making it difficult to remove the blade, the motor 135 rotates the threaded rod 134. The limiting slider 132 moves upward on the surface of the limiting rod 133 and the threaded rod 134, and the end of the sleeve 139 fits against the edge of the other end of the pry bar 16, thereby increasing the pulling force of the lever arm and generating a greater pushing force on the other end of the pry bar 16. This achieves the effect of using the force applied by the long arm end to be transmitted to the fulcrum through the longer lever arm, so that heavier objects can be pried, thereby pushing the blade out of the equipment. The height of the hydraulic rod 137 can also be changed so that the end of the pry bar 16 will not be bent by too much bending force and bending angle, thus increasing the pulling force generated by the hydraulic rod 137.

[0038] After the blade is removed from the surface of the equipment, the new blade is aligned with the interface of the cutting equipment. With the help of motor 123, the threaded rod 122 is rotated. The double-hole slider 143 on the outer surface of the threaded rod 122 and the limit rod 121 on both sides moves towards the middle position of the pry bar 16. The anti-slip soft plate 142 on the surface of the swing arm plate 14 is attached to the two sides of the new blade. The new blade is at the same height and angle as the equipment interface. Then, one end of the pry bar 16 is engaged in the positioning slot of the new blade. With the help of hydraulic rod 137, the sleeve 139 is pushed in the opposite direction. The pry bar 16 rotates with the limit sleeve 153 as the fulcrum, pushing the new blade into the docking slot of the equipment to engage the blade. This achieves the effect of using two clamping plates to form a horizontal intersection angle between the new blade and the interface of the equipment, so that the new blade can be reinstalled without manual support and positioning.

[0039] After the pry bar 16 slides inside the limiting sleeve 153, when it is necessary to position the pry bar 16, the hydraulic rod 2 a2 pushes the semi-circular plate a3. The semi-circular plate a3 fits tightly against the outer surface of the pry bar 16. At this time, the anti-slip pad a4 on the inner wall of the semi-circular plate a3 increases the friction and locking force between it and the surface of the pry bar 16. While the pry bar 16 is being pulled and rotated, there will be no excessive shaking force. The pry bar 16 will not slide on the surface of the limiting sleeve 153 due to the pulling of the sleeve 139.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade push-pull positioning device for double-sided shear blade changing, comprising a fixed platform (11) and two sets of fixed housings (13) detachably mounted on the outer surface of the top of the fixed platform (11), an outward housing (12) fixedly mounted on one side surface of the fixed platform (11), a sliding arm plate (14) threadedly and movably sleeved on the outer surface of the outward housing (12), a threaded lifter (15) fixedly mounted on one side surface of the outward housing (12), and a pry bar (16) movably sleeved on the outer surface of the threaded lifter (15), characterized in that: Limiting sliders (132) are movably sleeved on the outer surfaces of the two sets of fixed housings (13). A motor (135) is fixedly installed on the top surface of one set of fixed housings (13). A threaded rod (134) is movably sleeved on the inner wall of the fixed housing (13) and a limiting rod (133) is fixedly installed on the output end of the motor (135). A limiting housing (136) is fixedly installed on the inner wall of the other set of fixed housings (13). A limiting housing (136) is movably sleeved on the outer surface of the limiting slider (132). A hydraulic rod (137) is detachably installed on the inner wall of the limiting housing (136). A strap (138) is fixedly connected to the output end of the hydraulic rod (137). A fitting sleeve (139) is movably sleeved on the outer surface of the crowbar (16) and fixedly connected to the outer surface of the strap (138).

2. The blade push-pull positioning device for double-sided shear blade changing according to claim 1, characterized in that: A slider (151) is movably sleeved on the inner wall of the threaded lifting device (15), and a rotating shaft (152) is movably sleeved on the outer surface of the slider (151). A limiting sleeve (153) is fixedly connected to the outer surface of the rotating shaft (152) and is movably sleeved on the outer surface of the pry bar (16).

3. The blade push-pull positioning device for double-sided shear blade changing according to claim 2, characterized in that: A trapezoidal overlapping platform (154) is fixedly installed on the inner surface of the threaded lifting device (15) at the bottom edge position, and a snap-fit ​​groove (155) is opened on the top surface of the trapezoidal overlapping platform (154).

4. The blade push-pull positioning device for double-sided shear blade changing according to claim 2, characterized in that: Hydraulic rods (a2) are symmetrically fixedly installed on the inner wall of the limiting sleeve (153), and a semi-circular plate (a3) ​​is fixedly connected to the output end of the hydraulic rods (a2).

5. The blade push-pull positioning device for double-sided shear blade changing according to claim 4, characterized in that: An anti-slip pad (a4) is provided on the outer surface of the semi-circular arc plate (a3) ​​and is movably sleeved on the outer surface of the pry bar (16). An anti-sway sleeve disc (a1) is fixedly connected to the inner wall of the limiting sleeve shell (153) and at the upper and lower edges of the hydraulic rod (a2) and the semi-circular arc plate (a3).

6. The blade push-pull positioning device for double-sided shear blade changing according to claim 1, characterized in that: The outer surface of the fitting swing arm plate (14) is provided with a fitting anti-slip soft plate (142), the bottom surface of the fitting swing arm plate (14) is provided with a universal wheel (141), and a double-hole slider (143) is fixedly installed on one side surface of the fitting swing arm plate (14).

7. The blade push-pull positioning device for double-sided shear blade changing according to claim 1, characterized in that: A motor (123) is fixedly installed on one side surface of the outer sleeve (12). A limit rod (121) is provided on the inner wall of the outer sleeve (12). A threaded rod (122) provided on the inner wall of the outer sleeve (12) is fixedly connected to the output end of the motor (123). The outer surfaces of the threaded rod (122) and the limit rod (121) are movably sleeved on the inner wall of the double-hole slider (143).

8. The blade push-pull positioning device for double-sided shear blade changing according to claim 1, characterized in that: A slot (131) is provided on the outer surface of the fixed sleeve (13), the outer surface of the limiting slider (132) is movably sleeved on the inner wall of the slot (131), and the outer surfaces of the threaded rod (134) and the limiting rod (133) are movably sleeved on the outer surface of the limiting slider (132).

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