Domestic tensioning sleeve replacement tool for pinch roll

Abstract

The utility model discloses a domestic tensioning sleeve replacement tool for a pinch roll, belongs to the field of wire rod rolling tools, and aims to solve the problem of insufficient pre-tightening force of a domestic tensioning sleeve. Comprising a pretensioner and a fastening bolt, the pretensioner comprises a circular ring body, the periphery of the circular ring body extends in the radial direction to form three supporting arm bodies, the same sides of the three supporting arm bodies extend in the axial direction of the circular ring body to form supporting block bodies, and the fastening bolt is matched with an inner hole of the circular ring body. The end faces, far away from the circular ring body, of the three supporting block bodies are pressed on the second flange structure, and then the multiple tensioning bolts between the inner sleeve and the outer sleeve are tightened. According to the utility model, the pre-tightening force can be improved to prevent the domestic tensioning sleeve from loosening, and the substantive effects of short time, low investment, quick effect and the like are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of wire rolling tooling, in particular to a tooling for replacing a pinch roller and a domestically produced tensioning sleeve. Background Art

[0002] High-speed wire rod rolling equipment features pinch rolls. The workpiece's speed is increased by the lifting and lowering of a pneumatic cylinder. The pinch roll rings directly contact the workpiece, while the support discs secure the rings. These support discs are attached to the pinch roll shafts via tensioning sleeves. Severe wear of the tensioning sleeves requires replacement, otherwise the tensioning effect is compromised. However, imported tensioning sleeves are expensive.

[0003] The price of domestic tensioning sleeve accessories is only 1 / 11 of that of imported tensioning sleeves, which can greatly reduce the replacement cost. However, after replacing the domestic tensioning sleeves, many production failures have occurred due to the loosening of the tensioning sleeves, resulting in the displacement of the support plate position. The main reason is that there is a slight deviation in the external dimensions of the domestic tensioning sleeves and the imported tensioning sleeves. When installing the domestic tensioning sleeves, the inner sleeve and the outer sleeve of the domestic tensioning sleeves are not properly plugged in, and the pre-tightening force after installation is insufficient, resulting in the loosening of the tensioning sleeve after the rolled piece passes through the pinch rollers several times, which in turn causes the support plate to loosen. Utility Model Content

[0004] The purpose of this utility model is to provide a tool for replacing the pinch roller tension sleeves made in China, so as to solve the problem of insufficient preload force when the domestic tension sleeves are connected between the support plate and the pinch roller shaft of the wire rolling equipment. The technical solutions adopted by this utility model are as follows:

[0005] A domestically produced tension sleeve replacement tool for a pinch roller, the domestically produced tension sleeve comprising an inner sleeve and an outer sleeve, the inner sleeve being an unsealed outer conical sleeve with a slit on one side, the outer sleeve being a cylindrical sleeve, the outer circumferential large-diameter end of the inner sleeve being provided with a second flange structure, the inner hole of the support plate being provided with a first flange structure, the outer sleeve and the second flange structure being clamped on both sides of the first flange structure, the inner sleeve being inserted into the outer sleeve, the inner sleeve being sleeved on the roller shaft of the pinch roller, the outer sleeve being provided with a plurality of screw holes on an end face of one side close to the second flange structure, the second flange structure being provided with a plurality of through holes, the plurality of screw holes and the plurality of through holes being connected in a one-to-one correspondence via tension bolts;

[0006] The tooling includes a preloader and a fastening bolt. The preloader includes a circular body. Three support arms extend radially along the outer circumference of the circular body. A support block extends axially along the same side of the three support arms. The fastening bolt is adapted to the inner hole of the circular body. When installing the domestic tension sleeve, the fastening bolt is first passed through the inner hole of the circular body and connected to the roller shaft of the pinch roller. The end faces of the three support blocks away from the circular body are pressed on the second flange structure, and then several tension bolts between the inner sleeve and the outer sleeve are tightened.

[0007] Furthermore, the inner diameter of the annular body is 22 mm.

[0008] Furthermore, the outer diameter of the annular body is 56 mm.

[0009] Furthermore, the outer ends of the three support arms are arc surfaces concentric with the annular body, and the radius of the arc surface of the outer ends of the support arms is 42.5 mm.

[0010] Furthermore, the axial thickness of the annular body is 20 mm.

[0011] Furthermore, the extension length of the support block along the axial direction of the annular body is 8 mm.

[0012] Furthermore, the circumferential width midline angles between the three arm bodies are 102°, 102° and 156° respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] After tightening the fastening bolts, the domestic tensioning sleeve is compressed by the preloaded device, and then several tensioning bolts are tightened, and the preloaded device and the fastening bolts can be removed. The preloaded force of the several tensioning bolts is at the maximum value and will not loosen. The utility model can increase the preloaded force to prevent the domestic tensioning sleeve from loosening, achieving substantial effects such as short time, low investment, and quick results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the use of the utility model;

[0016] Figure 2 It is an axial schematic diagram of the pretensioner;

[0017] Figure 3 yes Figure 2 AA cross-sectional view;

[0018] Figure 4 This is an axial view of the preloader and the domestic expansion sleeve;

[0019] Figure 5 This is a cross-sectional view of the imported expansion sleeve;

[0020] Figure 6 This is the axial view of the imported expansion sleeve;

[0021] Figure 7 This is a cross-sectional view of a domestically produced tension sleeve;

[0022] Figure 8 This is an axial view of a domestically produced tension sleeve.

[0023] In the figure, 1. annular body, 2. support arm body, 3. support block body, 4. support plate, 5. domestic tensioning sleeve, 6. preloader, 7. fastening bolt, 8. roller, 9. inner sleeve, 10. outer sleeve, 11. tensioning bolt. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0025] The connections mentioned in this utility model are divided into fixed connections and detachable connections. The fixed connection refers to a non-detachable connection, including but not limited to conventional fixed connection methods such as hem connection, rivet connection, adhesive connection, and welding connection. The detachable connection refers to but not limited to conventional detachable connection methods such as bolt connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a fixed connection may be a welding connection, and a detachable connection may be a bolt connection.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings. The following embodiments are provided to explain the present invention, but the present invention is not limited to the following embodiments.

[0027] Example: Figures 1 to 8 As shown, a domestic tensioning sleeve replacement tool for a pinch roller is shown, wherein the domestic tensioning sleeve 5 includes an inner sleeve 9 and an outer sleeve 10. The inner sleeve 9 is an unclosed outer conical sleeve with a gap on one side, and the outer sleeve 10 is a cylindrical sleeve. The outer large diameter end of the inner sleeve 9 is provided with a second flange structure, and the inner hole of the support plate 4 is provided with a first flange structure. The outer sleeve 10 and the second flange structure are clamped on both sides of the first flange structure. The inner sleeve 9 is inserted into the outer sleeve 10, and the inner sleeve 9 is sleeved on the roller shaft 8 of the pinch roller. The outer sleeve 10 is provided with a plurality of screw holes on one end surface of the second flange structure, and the second flange structure is provided with a plurality of through holes. The plurality of screw holes and the plurality of through holes are connected one by one through tension bolts 11. By tightening the plurality of tension bolts 11, the inner sleeve 9 can clamp the roller shaft 8 of the pinch roller.

[0028] The tooling includes a preloader 6 and a fastening bolt 7. The preloader 6 includes a circular body 1. Three support arms 2 extend radially along the outer circumference of the circular body 1. A support block 3 extends axially along the same side of the three support arms 2 along the circular body 1. The fastening bolt 7 is adapted to the inner hole of the circular body 1. When installing the domestic tensioning sleeve 5, the fastening bolt 7 is first passed through the inner hole of the circular body 1 and connected to the roller shaft 8 of the pinch roller. The end faces of the three support blocks 3 away from the circular body 1 are pressed on the second flange structure, and then several tensioning bolts 11 between the inner sleeve 9 and the outer sleeve 10 are tightened.

[0029] After tightening the fastening bolt 7, the domestic tensioning sleeve 5 is compressed by the preloaded device 6, and then several tensioning bolts 11 are tightened, and the preloaded device 6 and the fastening bolt 7 can be removed. The pre-tightening force of the several tensioning bolts 11 is the maximum value and will not loosen. The utility model can increase the pre-tightening force to prevent the domestic tensioning sleeve 5 from loosening, achieving substantial effects such as short time, low investment, and quick results.

[0030] The inner diameter of the ring body 1 is 22 mm.

[0031] The outer diameter of the annular body 1 is 56 mm.

[0032] The outer ends of the three support arms 2 are arc surfaces concentric with the annular body 1 , and the radius of the arc surface of the outer ends of the support arms 2 is 42.5 mm.

[0033] The axial thickness of the annular body 1 is 20 mm.

[0034] The extension length of the support block 3 along the axial direction of the annular body 1 is 8 mm.

[0035] The circumferential width midline angles between the three arm bodies 2 are 102°, 102° and 156° respectively.

[0036] The above embodiments are merely illustrative of the present invention and do not limit its scope of protection. Those skilled in the art may make partial changes thereto, which are within the scope of protection of the present invention as long as they do not exceed the spirit of the present invention.

Claims

1. A domestic tensioning sleeve replacement tool for a pinch roller, the domestic tensioning sleeve (5) comprising an inner sleeve (9) and an outer sleeve (10), the inner sleeve (9) being an unclosed outer conical sleeve with a gap on one side, the outer sleeve (10) being a cylindrical sleeve, the outer large diameter end of the inner sleeve (9) being provided with a second flange structure, the inner hole of the support plate (4) being provided with a first flange structure, the outer sleeve (10) and the second flange structure being clamped on both sides of the first flange structure, the inner sleeve (9) being inserted into the outer sleeve (10), the inner sleeve (9) being sleeved on the roller shaft (8) of the pinch roller, a plurality of screw holes being provided on an end face of the outer sleeve (10) close to the second flange structure, a plurality of through holes being provided on the second flange structure, and the plurality of screw holes and the plurality of through holes being connected one-to-one by tension bolts (11); Its characteristics are: The tooling includes a preloader (6) and a fastening bolt (7). The preloader (6) includes a circular ring (1). Three arm bodies (2) extend radially from the outer periphery of the circular ring (1). A support block body (3) extends axially along the circular ring (1) on the same side of the three arm bodies (2). The fastening bolt (7) is compatible with the inner hole of the circular ring (1). When installing the domestic tension sleeve (5), the fastening bolt (7) is first passed through the inner hole of the circular ring (1) and connected to the roller shaft (8) of the clamping roller. The end faces of the three support blocks (3) away from the circular ring (1) are pressed on the second flange structure, and then a plurality of tension bolts (11) between the inner sleeve (9) and the outer sleeve (10) are tightened.

2. The domestic tension sleeve replacement tool for pinch roller according to claim 1, characterized in that: The inner hole diameter of the annular body (1) is 22 mm.

3. The domestic tension sleeve replacement tool for pinch roller according to claim 2, characterized in that: The outer diameter of the annular body (1) is 56 mm.

4. The domestic tension sleeve replacement tool for pinch roller according to claim 1, characterized in that: The outer ends of the three support arm bodies (2) are arc surfaces that are concentric with the annular body (1), and the radius of the arc surface of the outer ends of the support arm bodies (2) is 42.5 mm.

5. The domestic tension sleeve replacement tool for pinch roller according to claim 4, characterized in that: The axial thickness of the annular body (1) is 20 mm.

6. The domestic tension sleeve replacement tool for pinch roller according to claim 5, characterized in that: The extension length of the supporting block (3) along the axial direction of the annular body (1) is 8 mm.

7. A pinch roller tension sleeve replacement tool according to any one of claims 1 to 6, characterized in that: The circumferential width midline angles between the three support arm bodies (2) are 102°, 102° and 156° respectively.

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