A method for peeling a steel pipe encapsulation layer

Abstract

The present invention discloses a method for peeling the encapsulation layer of a steel pipe, which relates to the technical field of encapsulation layer peeling and mainly includes six steps, namely: Step 1, pre-peeling of the left encapsulation layer; Step 2, pre-peeling of the right encapsulation layer; Step 3, pre-peeling of the upper encapsulation layer; Step 4, secondary peeling of the upper encapsulation layer; Step 5, secondary peeling of the bottom and side encapsulation layers; Step 6, complete peeling of the encapsulation layer to expose the pipe body. The steps of the present invention are reasonably arranged, convenient and fast to operate, easy to master. By using a peeling pliers to peel out the internal central pipe body, the overall peeling of a relatively long encapsulation can be completed, and the shape of the encapsulation layer does not need to be changed, effectively ensuring the service performance of the encapsulated pipeline, and the internal central pipe body is not damaged during the peeling process.

Description

Technical Field

[0001] The invention relates to the technical field of packaging layer stripping, and in particular to a method for stripping a packaging layer of a steel pipe. Background Art

[0002] Due to the hardness and density of the packaging materials, the existing packaging pipelines are difficult to peel off the packaging of multiple materials. The outer packaging can only be peeled off by cutting with a blade or adding a tear rope inside the packaging. The method of adding a tear rope inside has the disadvantages that the rope is easy to break and the operation of peeling each rope separately is complicated. Cutting the packaging with a blade may cause damage to the inner tube and pose a safety hazard. In addition, in order to achieve rapid peeling, the existing packaging pipelines meet the purpose of packaging peeling by changing the packaging shape. The way to change the packaging shape is to add several grooves at the position where peeling is required. This method will cause the packaging at the groove position to be thinner, reducing the corrosion resistance of the packaging pipeline.

[0003] Therefore, for the packaged pipe and cable with a complete structure, how to develop a safe and convenient manual stripping method to facilitate the rapid breaking and stripping of the ends during connection has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a method for stripping the packaging layer of a steel pipe, so as to solve the problem that the prior art uses a blade or tearing method for stripping, which may cause damage to the inner pipe or breakage of the tear rope and cause complicated operation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a method for stripping a steel pipe packaging layer, which specifically comprises the following steps:

[0007] Step 1: Pre-stripping of the left packaging layer: Use a stripping pliers to clamp the first separation line corresponding to the first color identification band on the left, clamp and break it with force, and tear the split left packaging layer for a short distance;

[0008] Step 2: Pre-stripping of the right packaging layer: Use a stripping pliers to clamp the second separation line corresponding to the first color identification band on the right side, clamp and break it with force, and tear the split left packaging layer for a short distance;

[0009] Step 3: Pre-peeling of the upper packaging layer: Use a peeling pliers to clamp the upper packaging layer, use the third separation line in the center as the dividing point, clamp and break it with force, and tear the upper packaging layer for a short distance;

[0010] Step 4: Secondary peeling of the upper packaging layer: Clamp the pre-peeled upper packaging layer with a clamping tool and pull it backwards to the length required for peeling;

[0011] Step Five: Secondary stripping of the bottom and two-side encapsulation layers: After the upper encapsulation layer is torn and stripped, the tops of the left and right encapsulation layers are in an open state; clamp the bottom encapsulation layer with a stripping pliers and pull backward forcefully to the length that needs to be stripped. During this stripping process, the bottom encapsulation layer drives the left and right encapsulation layers to separate simultaneously.

[0012] Step Six: The encapsulation layer is completely stripped to expose the pipe body: Cut the stripped encapsulation layer to completely expose the central pipe body inside.

[0013] Furthermore, the pre-stripping in Steps One to Three refers to a short-distance tearing and separating operation, and the distance of the short-distance tearing and separating operation is 5 - 10 cm; in Steps Four to Five, the length of the secondary stripping is much greater than the length of the pre-stripping.

[0014] Furthermore, the clamping tool in Step Four uses a stripping pliers or a rotary stripper.

[0015] Furthermore, the stripping pliers include a jaw part and an opening and closing handle. The jaw part and the opening and closing handle are integrally formed, and after the two jaw parts and the opening and closing handle are cross-placed, they are connected together by a hinge shaft.

[0016] Furthermore, the jaw part is designed in an L-shaped beak shape, and the working end of the jaw part is set as a sharp head.

[0017] Furthermore, the rotary stripper includes a rotary head and a rotary handle. The rotary head is vertically connected to the middle position of the rotary handle through a connecting piece.

[0018] Furthermore, a clamping opening is provided on the rotary head, and the specification of the clamping opening is matched with the specification of the upper encapsulation layer.

[0019] Compared with the prior art, the beneficial technical effects of the present invention:

[0020] A method for stripping the encapsulation layer of a steel pipe according to the present invention, in the order of first two sides and then the middle, mainly uses a stripping pliers with a sharp head to clamp and tear for pre-stripping. After the pre-stripping is completed, a stripping pliers or a rotary stripper is used for secondary stripping operation. Finally, all the encapsulation layers are dragged or rotated and stripped along the central pipe body to the required position, and after cutting, the central pipe body is completely exposed. The steps of the present invention are reasonably arranged, the operation is convenient and fast, easy to master. Using the stripping pliers to strip out the internal central pipe body can complete the overall stripping of a longer encapsulation, and does not require changing the shape of the encapsulation layer, effectively ensuring the use performance of the encapsulated pipeline; this operation method is applicable to the overall stripping operation of flat encapsulated cables, or the stripping operation of pipe products with a similar structure and an encapsulation layer. Description of the Drawings

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a flowchart of the method for peeling the steel pipe encapsulation layer of the present invention;

[0023] Figure 2 It is a schematic diagram (perspective view) of the cable structure of the present invention;

[0024] Figure 3 It is a side view schematic diagram of the cable of the present invention;

[0025] Figure 4 It is a diagram of the position of the separation line during peeling on both sides of the present invention;

[0026] Figure 5 It is a schematic cross-sectional view after peeling by clamping on both sides of the present invention;

[0027] Figure 6 It is a diagram of the position of the separation line during up-and-down peeling of the present invention;

[0028] Figure 7 It is a schematic cross-sectional view after peeling by clamping on the upper side of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the peeling pliers of the present invention;

[0030] Figure 9 It is a schematic diagram of the structure of the rotary stripper of the present invention;

[0031] Figure 10 It is a schematic diagram of the usage state of the rotary stripper of the present invention;

[0032] Figure 11 It is a schematic diagram of the secondary peeling state of the upper encapsulation layer by the peeling pliers of the present invention;

[0033] Explanation of reference numerals: 1. Encapsulation layer; 2. Central tube body; 3. Color identification band; 4. First separation line; 5. Second separation line; 6. Third separation line; 7. Peeling pliers; 701. Plier mouth part; 702. Hinge shaft; 703. Opening and closing handle; 8. Rotary stripper; 801. Rotating head; 802. Connecting piece; 803. Rotating handle. Detailed implementation manners

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0037] As Figures 1-11 shown, a method for peeling a steel pipe encapsulation layer specifically includes the following steps:

[0038] Step 1. Pre-peeling of the left encapsulation layer: Use a peeling pliers 7 to clamp the first separation line 4 corresponding to the first color identification band 3 on the left side, apply force to clamp and break it, and tear the split left encapsulation layer for a short distance;

[0039] Step 2. Pre-peeling of the right encapsulation layer: Use a peeling pliers 7 to clamp the second separation line 5 corresponding to the first color identification band 3 on the right side, apply force to clamp and break it, and tear the split left encapsulation layer for a short distance;

[0040] Step 3. Pre-peeling of the upper encapsulation layer: Use a peeling pliers 7 to clamp the upper encapsulation layer, take the central third separation line 6 as the splitting point, apply force to clamp and break it, and tear the upper encapsulation layer for a short distance;

[0041] Step 4. Secondary peeling of the upper encapsulation layer: Clamp the pre-peeled upper encapsulation layer with a clamping tool and pull it backward with force to the required peeling length; when this peeling operation ends, the upper part of the central pipe body 2 is exposed;

[0042] Step 5. Secondary peeling of the bottom and both side encapsulation layers: After the upper encapsulation layer is torn and peeled off, the tops of the left and right encapsulation layers are in an open state; use a peeling pliers to clamp the bottom encapsulation layer and pull it backward with force to the required peeling length. During this peeling process, the bottom encapsulation layer drives the left and right encapsulation layers to separate simultaneously;

[0043] Step 6. Completely peeling the encapsulation layer to expose the pipe body: Cut the peeled encapsulation layer 1 to completely expose the internal central pipe body 2.

[0044] In this peeling method, in the order of first the two sides and then the middle, a peeling forceps with a sharp head is mainly used to clamp and tear for pre-peeling. After the pre-peeling is completed, the peeling forceps or a rotary peeling tool is used for tearing and peeling operations. Finally, the encapsulation layer is dragged along the central tube body to the required position. After cutting, the central tube body is completely exposed. The steps are reasonably arranged, the operation is convenient and fast, and it is easy to master. Using the peeling forceps to peel out the internal central tube body can complete the overall peeling of a relatively long encapsulation, and it is not necessary to change the shape of the encapsulation layer, effectively ensuring the service performance of the encapsulated pipeline. This operation method is applicable to the overall peeling operation of flat-shaped encapsulated cables, and the flat-shaped encapsulated cables include those with and without color identification bands.

[0045] Specifically, the pre-peeling in steps 1 to 3 refers to a short-distance tearing and separating operation, and the distance of the short-distance tearing and separating operation is 5 - 10 cm, ensuring the smooth progress of the clamping or curling positioning operation during the secondary peeling; in steps 4 to 5, the length of the secondary peeling is much greater than the length of the pre-peeling, and the length of the secondary peeling is the specified required length, that is, the encapsulation layer is peeled according to the length required by the user.

[0046] As Figures 8-11 shown, the clamping tool in step 4 uses a peeling forceps 7 or a rotary peeling tool 8. The peeling forceps 7 or the rotary peeling tool 8 is made of metal material, with a simple structure, easy to master, and convenient and fast to operate.

[0047] Specifically, the peeling forceps 7 includes a jaw part 701 and an opening and closing handle 703. The jaw part 701 and the opening and closing handle 703 are integrally formed, and the two jaw parts 701 and the opening and closing handle 703 are cross-placed and connected together by a hinge shaft 702. The jaw part 701 is designed in an L-shaped beak shape, and the working end of the jaw part 701 is set as a sharp head. The design of this sharp head facilitates the clamping and breaking operations during pre-peeling. Specifically, this peeling forceps can use a standard walnut forceps, or can be customized and reprocessed according to the existing walnut forceps structure, for example, improving the sharpness of the jaw part 701 to better achieve the clamping, breaking, and peeling operations.

[0048] Specifically, the rotary peeling tool 8 includes a rotary head 801 and a rotary handle 803. The rotary head 801 is vertically arranged and welded to the middle position of the rotary handle 803 through a connecting piece 802. A clamping opening is provided on the rotary head 801, and the specification of the clamping opening matches the specification of the upper encapsulation layer. The upper encapsulation layer for pre-peeling can be inserted into the clamping opening. When rotating, it is pressed by the outer layer. Continuing to rotate the rotary handle 803, the force application is convenient, and it is easier to tear and peel the upper layer.

[0049] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for peeling the encapsulation layer of a steel pipe, characterized in that: Specifically, it includes the following steps: Step 1: Pre-peeling of the left encapsulation layer: Use a peeling pliers to clamp the first separation line corresponding to the first color recognition band on the left, apply force to clamp and break it, and tear the split left encapsulation layer for a short distance; Step 2: Pre-peeling of the right encapsulation layer: Use a peeling pliers to clamp the second separation line corresponding to the first color recognition band on the right, apply force to clamp and break it, and tear the split right encapsulation layer for a short distance; Step 3: Pre-peeling of the upper encapsulation layer: Use a peeling pliers to clamp the upper encapsulation layer, take the central third separation line as the splitting point, apply force to clamp and break it, and tear the upper encapsulation layer for a short distance; Step 4: Secondary peeling of the upper encapsulation layer: Clamp the pre-peeled upper encapsulation layer with a clamping tool and pull it backward with force to the required peeling length; Step 5: Secondary peeling of the bottom and side encapsulation layers: After the upper encapsulation layer is torn and peeled off, the tops of the left and right encapsulation layers are in an open state; Clamp the bottom encapsulation layer with a peeling pliers and pull it backward with force to the required peeling length. During this peeling process, the bottom encapsulation layer drives the left and right encapsulation layers to separate simultaneously; Step 6: The encapsulation layer is completely peeled off and the pipe body is exposed: Cut the peeled encapsulation layer to completely expose the central pipe body inside; Wherein, each color recognition band is respectively located directly below the central pipe body and close to the central pipe body. The first separation line passes through the first color recognition band on the left and the straight line where it is located penetrates the encapsulation layer in the vertical direction. The second separation line passes through the first color recognition band on the right and the straight line where it is located penetrates the encapsulation layer in the vertical direction. The straight line where the third separation line is located penetrates the encapsulation layer between two adjacent central pipe bodies in the horizontal direction.

2. The method for peeling the encapsulation layer of a steel pipe according to claim 1, characterized in that: The pre-stripping in the first to the third steps refers to a short-distance tearing separation operation, and the distance of the short-distance tearing separation operation is 5 to 10 cm. ； In the fourth to the fifth steps, the length of the secondary stripping is much greater than that of the pre-stripping.

3. The method for peeling the encapsulation layer of a steel pipe according to claim 1, characterized in that: The clamping tool in step 4 uses a peeling pliers or a rotary peeling device.

4. The method for peeling the encapsulation layer of a steel pipe according to claim 3, characterized in that: The peeling pliers include a jaw part and an opening and closing handle. The jaw part and the opening and closing handle are integrally formed, and the two jaw parts and the opening and closing handle are cross-placed and connected together by a hinge shaft.

5. The method for peeling the encapsulation layer of a steel pipe according to claim 4, characterized in that: The jaw part is designed in an L-shaped beak shape, and the working end of the jaw part is set as a sharp head.

6. The method for peeling the encapsulation layer of a steel pipe according to claim 3, characterized in that: The rotary peeling device includes a rotary head and a rotary handle. The rotary head is vertically connected to the middle position of the rotary handle through a connecting piece.

7. The method for peeling the encapsulation layer of a steel pipe according to claim 6, characterized in that: A clamping opening is provided on the rotary head, and the specification of the clamping opening is matched with the specification of the upper encapsulation layer.

Images