Slitting and pressing mechanism

Abstract

The utility model discloses a longitudinal shearing and pressing mechanism in the field of metal slitting equipment, which comprises a screw rod, a screw sleeve in threaded connection with the screw rod, a worm gear sleeved outside the screw sleeve, a locking nut in compression joint with the upper surface of the worm gear, a locking nut in threaded connection with the screw sleeve, the worm gear meshed with a worm, one end of the worm connected with a driving device, and a pull rod connected with the upper end of the screw rod. The pull rod is sleeved with a spring and an adjusting nut, the lower surface of the adjusting nut abuts against the spring, the lower end of the lead screw is fixedly connected with a connecting plate, and the connecting plate is connected with the shearing tool bit. According to the longitudinal shearing pressing mechanism, the gap between the lead screw and the screw sleeve can be effectively eliminated, the movement precision and stability of the pressing mechanism are guaranteed, and then the longitudinal shearing precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal slitting equipment, in particular to a longitudinal shearing pressing mechanism. Background Art

[0002] The slitting unit is also called a slitting machine or slitting line. It is used to cut metal coils into strips of various required widths, and then collect the strips into small coils for the next process. It is an essential equipment for transformer, motor industry and other metal strip precision shearing. The materials it is used for mainly slitting and shearing include tinplate, galvanized iron, silicon steel sheet, cold-rolled strip steel, stainless steel strip, aluminum strip, steel strip and other coils.

[0003] When the slitting machine cuts the metal coil, it needs to drive the cutter head to the cutting position through the pressing mechanism. In the prior art slitting pressing mechanism, the shearing cutter head is usually connected to the screw rod, and the screw sleeve is driven to rotate by the driving device, which drives the screw rod to move up and down, and then drives the shearing cutter head to move between the working position and the reset position. Since there is usually a thread gap between the screw rod and the screw sleeve, the movement accuracy and stability of the pressing mechanism are reduced, which in turn affects the slitting accuracy. Utility Model Content

[0004] The utility model aims to provide a longitudinal shearing pressing mechanism to solve the problems existing in the prior art.

[0005] The purpose of the utility model is achieved as follows: a longitudinal shearing pressing mechanism includes a screw rod, a threaded sleeve is connected to the screw rod, a worm wheel is connected to the outer sleeve of the screw rod, a locking nut is pressed on the upper surface of the worm wheel, the locking nut is threadedly connected to the screw rod, the worm wheel is meshed with the worm, one end of the worm is connected to the driving device, the upper end of the screw rod is connected to a pull rod, a spring and an adjusting nut are sleeved on the pull rod, the lower surface of the adjusting nut abuts against the spring, the lower end of the screw rod is fixedly connected to a connecting plate, and the connecting plate is connected to the shearing cutter head. The longitudinal shearing pressing mechanism of the utility model can effectively eliminate the gap between the screw rod and the screw sleeve, ensure the movement accuracy and stability of the pressing mechanism, and thus improve the longitudinal shearing accuracy.

[0006] As a further improvement of the utility model, a transmission box is also included, and the main transmission parts are integrated in the box body to improve safety and reliability. A first bearing is provided at the connection position between the upper end of the wire sleeve and the transmission box, a second bearing is provided at the connection position between the lower end of the wire sleeve and the transmission box, and a third bearing is provided at the connection position between the worm and the side wall of the transmission box to ensure smooth transmission.

[0007] As a further improvement of the utility model, a fixing sleeve with an Ω-shaped cross section is provided on the top cover of the transmission box, the lower end of the pull rod is threadedly connected to the upper end of the screw rod, the upper end passes through the fixing sleeve and is sleeved with a spring, and the structure is stable and reliable.

[0008] As a further improvement of the utility model, an annular groove is provided between the lower surface of the transmission box top cover and the thread sleeve, a contraction step is provided at the upper end of the thread sleeve, the first bearing is installed in the annular groove and the inner side of the lower surface abuts against the contraction step. The structural design is ingenious, easy to install, and ensures the closedness of the transmission box to a large extent.

[0009] As a further improvement of the utility model, a limiting convex ring is provided at the lower end of the thread sleeve, and the second bearing includes two, which are respectively arranged between the limiting convex ring and the bottom wall of the transmission box, and between the bottom wall of the transmission box and the worm gear, so as to ensure the smooth rotation of the thread sleeve while ensuring the sealing of the transmission box to a large extent.

[0010] As a further improvement of the present invention, a locking nut is provided on the upper surface of the worm wheel, and the locking nut is threadedly connected to the thread sleeve to ensure that the worm wheel can rotate synchronously with the thread sleeve, thereby ensuring transmission accuracy and further improving longitudinal shearing accuracy.

[0011] As a further improvement of the utility model, the driving device is a hand wheel, which is low in price and easy to use.

[0012] As a further improvement of the utility model, a protective sleeve is provided outside the pull rod, and the lower end of the protective sleeve is threadedly connected to the upper end of the fixed sleeve to protect the spring and the adjusting nut and prevent staff from accidentally touching them. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the longitudinal shear pressing mechanism of the utility model.

[0014] Among them, 1 is a screw, 2 is a screw sleeve, 3 is a worm wheel, 4 is a worm, 5 is a driving device, 6 is a pull rod, 7 is a spring, 8 is an adjusting nut, 9 is a connecting plate, 10 is a transmission box, 11 is a first bearing, 12 is a second bearing, 13 is a third bearing, 14 is a fixed sleeve, 15 is a protective sleeve, and 16 is a ring groove. DETAILED DESCRIPTION

[0015] like Figure 1 The longitudinal shear pressing mechanism shown includes a screw rod 1, a threaded sleeve 2 is connected to the screw rod 1, a worm wheel 3 is connected to the outside of the sleeve 2, the worm wheel 3 is meshed with the worm 4, one end of the worm 4 is connected to the driving device 5, the upper end of the screw rod 1 is connected to a pull rod 6, a spring 7 and an adjusting nut 8 are sleeved on the pull rod 6, the lower surface of the adjusting nut 8 is in contact with the spring 7, and the lower end of the screw rod 1 is fixedly connected to a connecting plate 9, which is connected to the shearing head. Pressure is applied to the screw rod by the spring to effectively eliminate the gap between the screw rod and the sleeve. Furthermore, a locking nut is crimped on the upper surface of the worm wheel 3, and the locking nut is threadedly connected to the sleeve 2 to ensure that the worm wheel 3 can rotate synchronously with the sleeve 2, thereby ensuring the transmission accuracy and further improving the longitudinal shearing accuracy.

[0016] Specifically, the longitudinal shear pressing mechanism of this embodiment also includes a transmission box 10, and the main transmission parts are integrated in the box body to improve safety and reliability. A first bearing 11 is provided at the connection position between the upper end of the wire sleeve 2 and the transmission box 10, a second bearing 12 is provided at the connection position between the lower end of the wire sleeve 2 and the transmission box 10, and a third bearing 13 is provided at the connection position between the worm 4 and the side wall of the transmission box 10 to ensure smooth transmission.

[0017] A fixing sleeve 14 with an Ω-shaped cross section is provided on the top cover of the transmission box 10. The lower end of the pull rod 6 is threadedly connected to the upper end of the screw rod 1, and the upper end passes through the fixing sleeve 14 and sleeves the spring 7. The structure is stable and reliable. A protective sleeve 15 is provided outside the pull rod 6. The lower end of the protective sleeve 15 is threadedly connected to the upper end of the fixing sleeve 14, which protects the spring 7 and the adjusting nut 8 to prevent the staff from accidentally touching them.

[0018] An annular groove 16 is provided between the lower surface of the top cover of the transmission box 10 and the silk sleeve 2, a contraction step is provided at the upper end of the silk sleeve 2, the first bearing 11 is installed in the annular groove 16 and the inner side of the lower surface abuts against the contraction step, the structural design is ingenious, easy to install, and the sealing of the transmission box 10 is guaranteed to a large extent. A limiting convex ring is provided at the lower end of the silk sleeve 2, and the second bearing 12 includes two, which are respectively arranged between the limiting convex ring and the bottom wall of the transmission box 10, and between the bottom wall of the transmission box 10 and the worm wheel 3, so as to ensure the smooth rotation of the silk sleeve 2 and ensure the sealing of the transmission box 10 to a large extent.

[0019] In this embodiment, the driving device 5 is a hand wheel, which is low-priced and easy to use.

[0020] The longitudinal shear pressing mechanism of this embodiment can effectively eliminate the gap between the screw rod 1 and the wire sleeve 2, ensure the movement accuracy and stability of the pressing mechanism, and thus improve the longitudinal shearing accuracy.

[0021] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A longitudinal shearing pressing mechanism, characterized in that: It includes a screw rod, a screw sleeve is threadedly connected to the screw rod, a worm wheel is connected to the outer surface of the screw sleeve, a locking nut is crimped on the upper surface of the worm wheel, the locking nut is threadedly connected to the screw sleeve, the worm wheel is meshed with the worm, one end of the worm is connected to the driving device, the upper end of the screw rod is connected to a pull rod, a spring and an adjusting nut are sleeved on the pull rod, the lower surface of the adjusting nut abuts against the spring, the lower end of the screw rod is fixedly connected to a connecting plate, and the connecting plate is connected to the shearing head.

2. The longitudinal shear pressing mechanism according to claim 1 is characterized in that: It also includes a transmission box, wherein a first bearing is provided at the connection position between the upper end of the wire sleeve and the transmission box, a second bearing is provided at the connection position between the lower end of the wire sleeve and the transmission box, and a third bearing is provided at the connection position between the worm and the side wall of the transmission box.

3. The longitudinal shear pressing mechanism according to claim 2 is characterized in that: The transmission box top cover is provided with a fixing sleeve with an Ω-shaped cross section, the lower end of the pull rod is threadedly connected with the upper end of the screw rod, and the upper end passes through the fixing sleeve and is sleeved with the spring.

4. The longitudinal shear pressing mechanism according to claim 2 is characterized in that: An annular groove is provided between the lower surface of the transmission box top cover and the thread sleeve, a contraction step is provided at the upper end of the thread sleeve, and the first bearing is installed in the annular groove and the inner side of the lower surface abuts against the contraction step.

5. The longitudinal shear pressing mechanism according to claim 2, characterized in that: A limiting convex ring is provided at the lower end of the thread sleeve, and the second bearing includes two, which are respectively arranged between the limiting convex ring and the bottom wall of the transmission box and between the bottom wall of the transmission box and the worm gear.

6. The longitudinal shearing and pressing mechanism according to any one of claims 1 to 5, characterized in that: The driving device is a hand wheel.

7. The longitudinal shear pressing mechanism according to claim 3 is characterized in that: A protective sleeve is arranged outside the pull rod, and the lower end of the protective sleeve is threadedly connected with the upper end of the fixing sleeve.

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