Tightening tooling

Abstract

The present invention provides a tightening tool, which includes an adapter, a driving gear, a driving mechanism, a shaft core and a top cylinder; the driving gear is rotatably arranged on the adapter; the driving mechanism is connected and drives the driving gear to rotate; the shaft core is provided with an external thread and a driven gear; the shaft core is rotatably arranged on the adapter, the axis of the shaft core is perpendicular to the axis of the driving gear, and the driven gear is meshed with the driving gear; the inner wall of the top cylinder is provided with an internal thread, and the top cylinder is connected to the shaft core by a thread; the outer wall of the top cylinder is provided with a rotation-stopping structure for limiting the rotation of the top cylinder. Compared with the prior art, the tightening tool provided by the present invention controls the tightening length by rotating the thread, and can be applied to holes of different sizes; and the lateral rotation of the driving gear is converted into the longitudinal rotation of the driven gear, which solves the problem that a large operating space in the vertical direction is required when the tightening tool is screwed, while the foam board has a low thickness, the vertical space is narrow, and the tightening tool is difficult to screw.

Description

Technical Field

[0001] The invention relates to the technical field of tightening equipment, and in particular to a tightening tool. Background Art

[0002] At present, foamed boards need to be insulated and foamed in laminators. The thickness of foamed boards is not high, only 5 cm, and some foamed boards need to open larger holes to install inspection doors. During the foaming process, due to the pressure of foaming, the edge of the hole is easy to deform and overflow. In order to meet production needs and avoid deformation and overflow of the hole edge, the hole edge needs to be tightened. At present, hoses are usually used to tighten the hole edge, but the hose pressure is not enough and it is easy to deform. In addition, due to the fixed length of the hose, a hose of one length can only be used for holes of a single aperture and cannot be used for holes of different sizes. Summary of the invention

[0003] In view of the above-mentioned prior art that uses a hose to tighten the edge of a hole, the hose has a fixed length and is not suitable for holes of different sizes. The purpose of the present invention is to provide a tightening tool that controls the tightening length by rotating a thread and is suitable for holes of different sizes.

[0004] The present invention provides a tightening tool, comprising:

[0005] Adapter;

[0006] A driving gear rotatably disposed on the adapter;

[0007] A driving mechanism connected to the driving gear and used to drive the driving gear to rotate;

[0008] A shaft core, at least one end of which is provided with an external thread, and a driven gear is also provided on the outer circumferential surface of the shaft core; the shaft core is rotatably arranged on the adapter, the axis of the shaft core is perpendicular to the axis of the driving gear, and the driven gear is meshed with the driving gear; and a top cylinder, the inner wall of which is provided with an internal thread matching the external thread, the top cylinder is connected to the shaft core by threads; the outer wall of the top cylinder is provided with a rotation-stopping structure for limiting the rotation of the top cylinder.

[0009] The tightening tool controls the tightening length by rotating the thread and can be applied to holes of different sizes. The lateral rotation of the driving gear is converted into the longitudinal rotation of the driven gear through the transmission of two perpendicular gears, thus solving the problem that a large operating space in the vertical direction is required when the tightening tool is screwed, while the foam board has a low thickness and a small vertical space, making it difficult to screw the tightening tool.

[0010] Preferably, the driving mechanism comprises a handle, and the handle is connected to the driving gear.

[0011] Preferably, a non-circular jack is provided in the middle of the end face of the driving gear, and the handle has a protrusion matching the shape of the jack, and the driving gear and the handle are detachably connected through the jack and the protrusion. The handle allows the operator to easily rotate the driving gear, and the handle can be detached after being tightened, thereby avoiding interference of the handle with foaming.

[0012] Preferably, a crank is provided on the outer edge of the handle, and the operator can turn the handle conveniently and labor-savingly by providing the crank.

[0013] Preferably, the crank comprises a connecting portion and a hand-holding portion, the hand-holding portion is rotatably connected to the connecting portion, and the connecting portion is threadedly connected to the handle. This arrangement allows the operator's hand and the hand-holding portion to remain relatively still when the crank is turned, which facilitates operation and effectively reduces friction damage to the hand.

[0014] Preferably, the driving mechanism is a motor, and the output shaft of the motor is connected to and drives the driving gear to rotate. A remote control device and a battery can be added, the motor is powered by the battery, and the operation of the motor is controlled by the remote control device.

[0015] Preferably, the adapter is provided with a first mounting hole, and the driving gear is rotatably provided in the first mounting hole; the first mounting hole is covered with a cover, and the cover is provided with a through hole, and the driving mechanism is provided outside the first mounting hole and extends into the through hole on the cover to connect with the driving gear. By providing the cover, the driving gear can be effectively restricted from moving in its circumferential direction, and the first mounting hole and the gear teeth of the driving gear are covered by the cover, which effectively prevents dust and effectively prevents the operator's limbs, clothing or hair from extending between the rotating gear teeth, thereby improving safety during operation.

[0016] Preferably, the lower part of the driving gear is provided with gear teeth, and the side surface of the upper part of the gear is provided with a first annular groove; the surface cover is provided with a boss, and a through hole on the surface cover passes through the boss, and a second annular groove is provided in the through hole; the upper part of the driving gear is inserted into the through hole, and the driving gear and the surface cover form a bearing connection through the first annular groove, the second annular groove and steel balls arranged in the first annular groove and the second annular groove.

[0017] In other embodiments, a support column is provided on the adapter, a through hole is provided on the driving gear, and the support column is inserted into the through hole, so that the driving gear and the adapter can also be rotatably connected. A through hole and a latch can also be provided on the support column, and the latch provided in the through hole can prevent the driving gear from falling off the support column.

[0018] Preferably, the adapter has a second mounting hole, and the inner wall of the second mounting hole is provided with a third annular groove; the outer circumferential surface of the shaft core is provided with a fourth annular groove, and the shaft core is inserted into the second mounting hole, and the shaft core and the adapter are connected by a bearing through the third annular groove, the fourth annular groove, and the steel balls installed in the third annular groove and the fourth annular groove. The adapter and the shaft core are connected by a bearing, which can ensure that the adapter and the shaft core are not separated, and ensure that the driving gear and the driven gear are engaged. And the bearing connection can effectively reduce the friction when the shaft core rotates.

[0019] Preferably, both ends of the shaft core are provided with external threads, and the thread directions of the external threads at both ends are opposite; the two top cylinders are provided, and the two top cylinders are respectively provided at both ends of the shaft core and connected to the shaft core through threads. By providing top cylinders on both sides of the shaft core, the top tightening tool can be quickly extended and retracted, thereby improving work efficiency.

[0020] Preferably, a manual rotating part is provided on the shaft core between the adapter and the external thread, and the manual rotating part is a regular prism-shaped structure arranged on the outer side of the shaft core, such as a quadrangular pyramid, a pentagonal prism, a hexagonal prism, an octagonal prism, etc., so that the shaft core can be easily rotated manually.

[0021] Preferably, the top cylinder is a multi-layer nested structure, and the top cylinder can be extended or contracted by sliding between the layers of cylinders in the axial direction; the inner wall of the innermost cylinder is provided with an internal thread matching the external thread, and the innermost cylinder is connected to the shaft core through a thread; the outer wall of the outermost cylinder has a rotation-stopping structure for limiting the rotation of the top cylinder. By setting the top cylinder as a retractable structure, when using it, the top cylinder can be adjusted to a suitable length first, and then the gear can be rotated to adjust the overall length of the top tightening tooling, so that the top tightening tooling can be adapted to a larger hole and avoid changing the type.

[0022] Preferably, the anti-rotation structure is a plane or a plurality of protrusions arranged at intervals.

[0023] Compared with the prior art, the tightening length is controlled by rotating the thread, which is suitable for holes of different sizes; and through the transmission of two perpendicular gears, the lateral rotation of the driving gear is converted into the longitudinal rotation of the driven gear, which solves the problem that a large operating space in the vertical direction is required when the tightening tool is screwed, while the foam board is thin and the vertical space is narrow, making it difficult to screw the tightening tool.

[0024] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the present invention can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The invention will be described in more detail below based on non-limiting examples and with reference to the accompanying drawings, in which:

[0026] Figure 1 A front view of a tightening tool provided in one embodiment of the present invention;

[0027] Figure 2 A top view of a tightening tool provided in one embodiment of the present invention;

[0028] Figure 3 A cross-sectional view of a tightening tool provided in one embodiment of the present invention (steel ball omitted);

[0029] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0030] Figure 5 A front view of a driving gear provided by an embodiment of the present invention;

[0031] Figure 6 A top view of a driving gear provided in one embodiment of the present invention;

[0032] Figure 7 A three-dimensional diagram of a driving gear provided by an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the structure of a handle provided by an embodiment of the present invention;

[0034] Fig. 9 A schematic diagram of the structure of a crank provided by an embodiment of the present invention;

[0035] Fig.10 A schematic diagram of the structure of an adapter provided by an embodiment of the present invention;

[0036] Fig.11 A schematic diagram of the structure of a cover provided by an embodiment of the present invention;

[0037] Fig.12 A front view of a shaft core provided in one embodiment of the present invention (external threads omitted);

[0038] Fig.13 A three-dimensional diagram of a shaft core provided in one embodiment of the present invention (external threads omitted);

[0039] Fig.14 A schematic structural diagram of a top cylinder provided in one embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. Driving gear; 2. Handle; 3. Crank; 4. Adapter; 5. Cover; 6. Axle core; 7. Top tube; 8. Driven gear; 9. Socket; 10. Bump; 11. Boss; 12. Through hole; 13. Anti-rotation structure; 14. First mounting hole; 15. Second mounting hole; 16. First annular groove; 17. Second annular groove; 18. Third annular groove; 19. Fourth annular groove; 20. Manual rotating part; 21. Gear teeth; 22. Connecting part; 23. Hand-held part; 24. Screw hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below. Based on the specific implementation methods in the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0045] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0046] like Figures 1 to 4As shown, the clamping tool mainly includes an adapter 4, a driving gear 1, a driving mechanism, a shaft core 6 and a top cylinder 7. The adapter 4 is used to carry the driving gear 1 and the shaft core 6, so that the driving gear 1 and the shaft core 6 are rotatably mounted on the adapter 4; the driving mechanism is used to connect and drive the driving gear 1 to rotate; the shaft core 6 is provided with an external thread and a driven gear 8, and the shaft core 6 is threadedly connected with the top cylinder 7 through the external thread; the axis of the shaft core 6 is perpendicular to the axis of the driving gear 1, and the driven gear 8 is meshed with the driving gear 1. When the driving gear 1 rotates, the driven gear 8 and the shaft core 6 are driven to rotate, and at the same time, the rotation of the top cylinder 7 is limited by the anti-rotation structure 13 on the top cylinder 7, thereby converting the rotation of the shaft core 6 into a linear motion of the top cylinder 7, so that the clamping tool is extended or shortened.

[0047] like Figures 5 to 7 As shown, the lower part of the driving gear 1 is provided with gear teeth 21 , and the side surface of the upper part of the gear is provided with a first annular groove 16 ; a square insertion hole 9 is provided in the middle of the end surface of the driving gear 1 .

[0048] like Figure 1 , Figure 8 , Fig. 9 As shown, the driving mechanism includes a handle 2, which is disc-shaped, and has a square protrusion 10 at the bottom of the handle 2 that matches the shape of the socket 9. The driving gear 1 and the handle 2 are detachably connected through the socket 9 and the protrusion 10. After the protrusion 10 is inserted into the socket 9, the handle 2 can be rotated to drive the gear to rotate. A crank 3 is also provided on the outer edge of the handle 2. The crank 3 includes a connecting portion 22 and a hand-held portion 23. The hand-held portion 23 is sleeved on the top of the connecting portion 22 and is rotatably connected to the connecting portion 22. The bottom of the connecting portion 22 is provided with an external thread, and a screw hole 24 is provided on the outer edge of the handle 2. The connecting portion 22 is screwed into the screw hole 24 and is connected to the handle 2 through a thread.

[0049] In addition to being a square, the shape of the socket 9 on the driving gear 1 can also be set to other polygons such as a triangle, a pentagon, a hexagon, or an ellipse, a semicircle, etc.; the shape of the protrusion 10 on the handle 2 can also be set to a triangle, a pentagon, a hexagon, or other polygons, or an ellipse, a semicircle, etc. corresponding to the shape of the socket 9.

[0050] like Fig.10 As shown, the top and side of the adapter 4 are respectively provided with a first mounting hole 14 and a second mounting hole 15 .

[0051] The first mounting hole 14 is a blind hole. The driving gear 1 is mounted in the first mounting hole 14. The handle 2 is arranged outside the first mounting hole 14. The first mounting hole 14 is covered with a cover 5, which is fixed to the adapter 4 by screws. The middle of the bottom surface of the cover 5 has a boss 11 protruding downward. The through hole 12 on the cover 5 passes through the top surface of the cover 5 and the boss 11 (see FIG. Fig.11). A second annular groove 17 is arranged in the through hole 12. The upper part of the driving gear 1 is inserted into the through hole 12, and the first annular groove 16 and the second annular groove 17 are enclosed to form a cavity. A steel ball (not shown in the figure) is arranged in the cavity, and the steel ball is in contact with the first annular groove 16 and the second annular groove 17. The driving gear 1 and the face cover 5 form a bearing connection through the first annular groove 16, the second annular groove 17 and the steel ball arranged in the first annular groove 16 and the second annular groove 17. The bearing connection can effectively reduce the friction force when the driving gear 1 rotates. By providing the face cover 5, the movement of the driving gear 1 along its circumferential direction can be effectively limited, and the first mounting hole 14 and the gear teeth 21 of the driving gear 1 are covered by the face cover 5, which effectively prevents dust and effectively prevents the operator's limbs, clothes or hair from extending between the rotating gear teeth 21, thereby improving safety during operation.

[0052] The second mounting hole 15 is a through hole 12 penetrating the adapter 4, and the second mounting hole 15 is connected to the first mounting hole 14. A third annular groove 18 is provided on the inner wall of the second mounting hole 15.

[0053] like Fig.12 , Fig.13 As shown, both ends of the shaft core 6 are provided with external threads, and the thread directions of the external threads at both ends are opposite. A driven gear 8 and a fourth annular groove 19 are also provided on the outer circumferential surface of the middle part of the shaft core 6, and the fourth annular groove 19 can be provided on the right side of the driven gear 8. The shaft core 6 passes through the second mounting hole 15, and the part of the shaft core 6 provided with the driven gear 8 and the fourth annular groove 19 is located in the second mounting hole 15, and the driving gear 1 and the driven gear 8 are meshed at the connection between the first mounting hole 14 and the second mounting hole 15; the external threads at both ends of the shaft core 6 and thereon are exposed outside the second mounting hole 15. The third annular groove 18 and the fourth annular groove 19 enclose a cavity, and a steel ball (not shown in the figure) is provided in the cavity, and the steel ball contacts the third annular groove 18 and the fourth annular groove 19, and the steel ball installed in the first annular groove 16 and the second annular groove 17 forms a bearing connection. The shaft core 6 and the adapter 4 form a bearing connection through the third annular groove 18, the fourth annular groove 19 and the steel ball installed in the third annular groove 18 and the fourth annular groove 19. The adapter 4 and the shaft core 6 are connected by the bearing, which can ensure that the adapter 4 and the shaft core 6 are not separated, and ensure that the driving gear 1 and the driven gear 8 are engaged. In addition, the bearing connection can effectively reduce the friction force when the shaft core 6 rotates.

[0054] Preferably, a portion of the middle of the shaft core 6 exposed outside the second mounting hole 15 is configured as a regular octagonal prism, and the regular octagonal prism can be configured on the right side of the fourth annular groove 19 to facilitate manual rotation of the shaft core 6.

[0055] Figure 1In the illustrated tightening device, the driving gear 1 and the driven gear 8 are both cylindrical gears; in other embodiments, the driving gear 1 and the driven gear 8 may also be bevel gears, such as 45° bevel gears.

[0056] like Fig.14 As shown, two top cylinders 7 are provided, and the inner wall of the top cylinder 7 is provided with an internal thread matching the corresponding external thread. The two top cylinders 7 are respectively provided at the two ends of the mandrel and are connected to the shaft core 6 by threads. In order to convert the rotation of the shaft core 6 into the linear movement of the top cylinder 7, the outer wall of the top cylinder 7 is provided with a stop structure 13 for limiting the rotation of the top cylinder 7. For example, the end of the top cylinder 7 is provided with a square structure. When working, the plane of the square structure contacts the plane, so the top cylinder 7 will not rotate with the rotation of the shaft core 6. The top cylinder 7 moves relative to the shaft core 6, and the top cylinder 7 moves toward the two ends of the shaft core 6 or toward the center (determined by the rotation direction of the shaft core 6), so that the top tightening tool is extended or shortened, thereby satisfying the top tightening effect of the hole within a certain width range. By providing the top cylinder 7 on both sides of the shaft core 6, the top tightening tool can be quickly extended and retracted, thereby improving the work efficiency. Preferably, the top tube 7 is a multi-layer nested structure, and the top tube 7 can be extended or contracted by sliding between the layers of the tubes in the axial direction, similar to the telescopic umbrella handle of a foldable umbrella; the inner wall of the innermost tube is provided with an internal thread matching the external thread, and the innermost tube is connected to the shaft core 6 by a thread; the outer wall of the outermost tube is provided with a rotation-stopping structure 13 for limiting the rotation of the top tube 7. By setting the top tube 7 as a telescopic structure, when using it, the top tube 7 can be adjusted to a suitable length first, and then the gear can be rotated to adjust the overall length of the top tightening tooling, so that the top tightening tooling can be adapted to a larger hole and avoid changing the type.

[0057] The tightening tool provided by the present invention can be used to tighten the edge of the hole of the foaming board, and solve the problem of narrow vertical space by rotating horizontally instead of vertically. The specific operation when using it is as follows:

[0058] Place the tightening tool in the hole of the foaming plate on the pressure plate, align the protrusion 10 at the lower end of the handle 2 with the socket 9, turn the crank 3 to drive the handle 2 to rotate, the handle 2 drives the driving gear 1 to rotate through the square socket 9, the driven gear 8 engaged with the driving gear 1 rotates, and the driven gear 8 drives the shaft core 6 to rotate; because the front end of the top cylinder 7 is a square structure, the main body rotates, the top cylinder 7 does not rotate, and can only move linearly along the axial direction of the shaft core 6, and the tightening tool extends on both sides of the tightening hole. After tightening, take out the handle 2; press the pressure plate down, and start pouring foaming. After the foaming is completed, insert the handle 2 and rotate it in the opposite direction, the tightening tool is shortened, and the tool is convenient to take out.

[0059] Finally, it should be noted that the above implementation modes and examples are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above implementation modes and examples, those skilled in the art should understand that they can still modify the technical solutions described in the above implementation modes or examples, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the implementation modes or examples of the present invention.

Claims

1. A tightening tool, characterized in that: include: Adapter; A driving gear rotatably disposed on the adapter; A driving mechanism connected to the driving gear and used to drive the driving gear to rotate; A shaft core, at least one end of which is provided with an external thread, and a driven gear is also provided on the outer circumferential surface of the shaft core; the shaft core is rotatably arranged on the adapter, the axis of the shaft core is perpendicular to the axis of the driving gear, and the driven gear is meshed with the driving gear; as well as A top cylinder, whose inner wall is provided with an internal thread matching the external thread, and the top cylinder is connected to the shaft core through a thread; and a rotation-stopping structure for limiting the rotation of the top cylinder is provided on the outer wall of the top cylinder; The adapter is provided with a first mounting hole, and the driving gear is rotatably arranged in the first mounting hole; the first mounting hole is covered with a surface cover, and the surface cover is provided with a through hole, and the driving mechanism is arranged outside the first mounting hole and extends into the through hole on the surface cover to be connected with the driving gear; The adapter is provided with a second mounting hole, and the inner wall of the second mounting hole is provided with a third annular groove; the outer circumferential surface of the shaft core is provided with a fourth annular groove, the shaft core is inserted into the second mounting hole, and the shaft core and the adapter are connected to form a bearing through the third annular groove, the fourth annular groove and the steel balls installed in the third annular groove and the fourth annular groove; The driving mechanism comprises a handle, and the handle is connected to the driving gear.

2. The tightening tool according to claim 1, characterized in that: A non-circular insertion hole is provided in the middle of the end surface of the driving gear, and a protrusion matching the shape of the insertion hole is provided on the handle, and a detachable connection is formed between the driving gear and the handle via the insertion hole and the protrusion.

3. The tightening tool according to claim 1, characterized in that: The outer edge of the handle is provided with a rocker.

4. The tightening tool according to claim 3, characterized in that: The crank comprises a connecting portion and a hand-holding portion, the hand-holding portion is rotatably connected to the connecting portion, and the connecting portion is connected to the handle via a thread.

5. The tightening tool according to claim 1, characterized in that: The driving mechanism is a motor, and the output shaft of the motor is connected to and drives the driving gear to rotate.

6. The tightening tool according to claim 1, characterized in that: The lower part of the driving gear is provided with gear teeth, and the side surface of the upper part of the driving gear is provided with a first annular groove; the surface cover is provided with a boss, and a through hole on the surface cover passes through the boss, and a second annular groove is provided in the through hole; the upper part of the driving gear is inserted into the through hole, and the driving gear and the surface cover form a bearing connection through the first annular groove, the second annular groove and steel balls arranged in the first annular groove and the second annular groove.

7. The tightening tool according to claim 1, characterized in that: Both ends of the shaft core are provided with external threads, and the thread directions of the external threads at both ends are opposite; two top tubes are provided, and the two top tubes are respectively arranged at both ends of the shaft core and connected to the shaft core through threads.

8. The tightening tool according to claim 1, characterized in that: A manual rotating part is arranged on the shaft core between the adapter and the external thread, and the manual rotating part is a regular prism-shaped structure arranged on the outer side of the shaft core.

9. The tightening tool according to claim 1, characterized in that: The top cylinder is a multi-layer nested structure, and the top cylinder can be extended or contracted by sliding axially between the layers of cylinders; the inner wall of the innermost cylinder is provided with an internal thread matching the external thread, and the innermost cylinder is connected to the shaft core through a thread; the outer wall of the outermost cylinder is provided with a stop structure for limiting the rotation of the top cylinder.

10. The tightening tool according to claim 1 or 8, characterized in that: The anti-rotation structure is a plane or a plurality of protrusions arranged at intervals.

Images