CN116900999A - Sleeve assembling tool and method for assembling sleeve and heating coil in single-station die pressing equipment - Google Patents

Abstract

The sleeve and the base are rotated relatively, the screw is driven to rotate to drive the eccentric wheel to rotate until the interval between the cap body of the screw and the eccentric wheel is reduced until the interval disappears, the forced eccentric wheel applies gradually increased radial outward force to the inner peripheral wall of the sleeve, the reaction force of the gradually increased radial outward force gradually reduces the gap between the inner peripheral wall of the sleeve and the outer peripheral surface of the base until the interval disappears, an anti-rotation moment resisting the relative rotation of the sleeve and the handle is formed, and the sleeve and the base and the eccentric wheel are locked, namely the locking of the sleeve assembly tool and the sleeve is realized, and the sleeve is ensured not to be loosened or shed with the sleeve assembly tool in the rotating process, so that the stability of the subsequent sleeve and the heating coil assembly is improved.

Description

Sleeve assembling tool and method for assembling sleeve and heating coil in single-station die pressing equipment

Technical Field

The present disclosure relates to the field of infrared lens molding, and more particularly to a sleeve assembly tooling and method of assembling a sleeve with a heating coil in a single station molding apparatus.

Background

The compression molding technology is a high-precision optical element processing technology, which is to put softened glass into a high-precision mold, directly mold-mold the optical part meeting the use requirement at one time under the conditions of heating, pressurizing and no oxygen, and in the process of tabletting, the sleeve in the single-station mold pressing equipment is required to be assembled with the heating coil, the friction force of the heating coil on the sleeve with different materials is different, the heating coil is difficult to install without tools, namely, the heating coil is required to be firmly attached on the sleeve, and the coil is also required to be installed, so that the effect of the tools is obvious in the process.

In the prior art, pliers are often used for clamping the sleeve, and the pliers are rotated to enable the sleeve to rotate into the heating coil. Because the pliers clamp the sleeve, one end of the sleeve is fixed by the pliers, and the gap between the heating coil and the sleeve is insufficient for the pliers to extend into, the sleeve cannot be fully inserted into the heating coil. In addition, the force for clamping the sleeve by adopting pliers is not easy to grasp, and the sleeve is easy to damage due to overlarge force.

Disclosure of Invention

In view of the problems existing in the background art, an object of the present disclosure is to provide a sleeve assembling tool, which ensures that the sleeve cannot be loosened or separated from the sleeve assembling tool during the rotation process, and the sleeve assembling tool can firmly clamp the sleeve, so as to improve the stability of the subsequent sleeve and heating coil assembly. .

Still another object of the present disclosure is to provide a sleeve assembling tool, which can lock the sleeve by adopting the relative rotation of the sleeve and the base, so that an operator can control the force conveniently, and the sleeve is prevented from being damaged due to overlarge clamping force.

Another object of the present disclosure is to provide a sleeve assembling tool, which can realize accurate positioning of a sleeve, and adapt to sleeves of different diameters or sizes, so as to facilitate accurate assembly between the sleeve and a heating coil.

It is still another object of the present disclosure to provide a method of assembling a sleeve with a heating coil in a single-station mold press capable of firmly clamping the sleeve so as to improve stability of subsequent sleeve and heating coil assembly.

From this, provide a sleeve equipment frock for single-stop mould pressing equipment, sleeve equipment frock includes spanner, eccentric wheel and screw. The wrench comprises a base and a handle. The base is cylindrical and has a top surface and an internally threaded bore extending inwardly from the top surface and offset from the axis of the base. The handle is connected in the base in one side of keeping away from the base top surface, and the handle is coaxial with the base, and the handle is used for operating personnel to hold. The eccentric wheel is provided with a screw hole penetrating through the eccentric wheel along the thickness direction of the eccentric wheel at a position deviating from the axis of the eccentric wheel. The screw is provided with a cap body and a screw rod, the cap body is cylindrical, the screw rod is in threaded connection with a screw hole penetrating through the eccentric wheel and is screwed into an internal threaded hole of the base, and the axis of the screw is coaxial with the internal threaded hole and the screw hole. During locking operation, the screw and the eccentric wheel are assembled on the base, the screw is screwed into the internal threaded hole of the base, the cap body is spaced from the eccentric wheel, the eccentric wheel is spaced from the base, an operator holds the handle to insert the base together with the eccentric wheel in threaded connection with the base and the screw into the sleeve, the cap body of the screw is abutted against the internal peripheral wall of the sleeve, the handle and the sleeve rotate relatively by rotating the handle, the cap body of the screw is driven by the sleeve to rotate, the screw is driven by the cap body to continue to be screwed into the internal threaded hole of the base, the eccentric wheel is synchronously rotated along with the screw due to the threaded connection of the eccentric wheel and the cap body and the base, the eccentric wheel is contacted with the internal peripheral wall of the sleeve in the synchronous rotation process along with the screw, the eccentric wheel is not synchronously rotated with the screw due to friction resistance between the eccentric wheel and the internal peripheral wall of the sleeve and no friction force on two sides of the eccentric wheel in the axial direction, the screw is continuously screwed into the internal threaded hole of the base, so that the interval between the cap body and the eccentric wheel is reduced, when the interval between the cap body and the eccentric wheel is zero, the cap body and the eccentric wheel generate surface friction to force the eccentric wheel to synchronously rotate in the same direction, the screw rod is continuously screwed into the internal threaded hole of the base at the same time by the rotation of the cap body, the forced eccentric wheel gradually applies gradually increasing radial outward force to the inner circumferential wall of the sleeve due to eccentric motion in the rotation process, the reaction force of the gradually increasing radial outward force gradually reduces the gap between the inner circumferential wall of the sleeve and the outer circumferential surface of the base at the position opposite to the contact position of the inner circumferential wall of the sleeve with the eccentric wheel until the gap disappears, the contact of the outer peripheral surface of the base with the inner peripheral wall of the sleeve and the contact of the eccentric with the inner peripheral wall of the sleeve constitute an anti-rotation moment resisting the relative rotation of the sleeve and the handle, so that the sleeve is locked with the base and the eccentric for the assembly of the sleeve and the heating coil. The unlocking operation and the locking operation are opposite in rotation direction, the base drives the screw rod to rotate relative to the eccentric wheel to overcome the anti-rotation moment in the locking process, the cap body is separated from the eccentric wheel, the eccentric wheel returns to the state of synchronously rotating along with the screw rod only due to threaded connection with the screw rod, and therefore an operator can hold the handle to withdraw the base, the eccentric wheel in threaded connection with the base and the screw from the sleeve.

The method for assembling the sleeve and the heating coil in the single-station die pressing equipment is provided, a sleeve assembling tool is adopted, and the method comprises the following steps: s1, respectively holding a sleeve assembling tool and a sleeve by two hands; s2, enabling the handle and the sleeve to rotate relatively, and executing locking operation of locking the sleeve, the base and the eccentric wheel; s3, respectively holding a handle and a heating coil of the sleeve assembly tool sleeved with the sleeve by two hands, and rotating or pushing the sleeve assembly tool and/or the heating coil so that the sleeve is completely inserted and is in interference fit with the heating coil; s4, respectively holding a handle and a heating coil of the sleeve assembly tool sleeved with the sleeve by two hands, and executing unlocking operation opposite to the locking operation action so as to withdraw the sleeve assembly tool from the sleeve.

The beneficial effects of the present disclosure are as follows: compared with pliers in the background art, the sleeve assembling tool disclosed by the invention drives the screw to rotate through relative rotation of the sleeve and the base until the interval between the cap body of the screw and the eccentric wheel is reduced until the interval disappears, the forced driven eccentric wheel applies gradually increased radial outward force to the inner peripheral wall of the sleeve, the reaction force of the gradually increased radial outward force enables the gap between the inner peripheral wall of the sleeve and the outer peripheral surface of the base to be gradually reduced until the interval disappears, an anti-rotation moment resisting relative rotation of the sleeve and the handle is formed, and the sleeve is locked with the base and the eccentric wheel, so that the sleeve assembling tool and the sleeve are locked, and the sleeve is ensured not to be loosened or shed with the sleeve assembling tool in the rotating process, so that the stability of subsequent sleeve and heating coil assembling is improved.

Compared with the clamping of pliers in the background art, the sleeve assembling tool disclosed by the invention can lock the sleeve by adopting the relative rotation of the sleeve and the base, is convenient for an operator to control the force, and avoids the damage to the sleeve due to overlarge clamping force.

Compared with pliers of the background art, the sleeve assembling tool can accurately control the radial deviation between the eccentric wheel axis and the base axis as well as between the eccentric wheel axis and the screw axis, can accurately control the position of the sleeve and the eccentric moment, further adjust the eccentric moment to adjust the position of the sleeve relative to the base, realize the accurate positioning of the sleeve, adapt to the sleeves with different diameters or sizes, and be favorable for accurate assembly between the sleeve and the heating coil.

The sleeve assembly fixture can also adjust the contact pressure between the sleeve and the base, for example, the pressure applied by a human hand on the sleeve can be adjusted, namely, the locking moment is adjusted to ensure that the sleeve and the base are firmly connected, so that the sleeve assembly fixture can firmly clamp the sleeve. When the eccentric distance of the eccentric wheel is large and a large contact pressure is applied, the friction force between the sleeve and the base is increased, and the eccentric moment and the locking moment are correspondingly increased. Conversely, when the eccentric distance of the eccentric is smaller or smaller contact pressure is applied, the friction force is reduced, and the eccentric moment and the locking moment are also reduced.

Drawings

Fig. 1 is an assembly view of a sleeve assembly tooling according to the present disclosure.

Fig. 2 is an assembled view of another angle of fig. 1.

Fig. 3 is an exploded view of a sleeve assembly tooling according to the present disclosure.

Fig. 4 is a top view of the assembly tooling from the sleeve.

Fig. 5 is a cross-sectional view taken along line A-A of fig. 4.

Fig. 6 is a schematic diagram and a partial enlarged view when step S2 starts to be performed in the method of assembling the sleeve with the heating coil according to the present disclosure, at this time, the sleeve and the sleeve assembling tool are not interference fit, and the gap d between the inner peripheral wall of the sleeve and the outer peripheral surface of the base is shown to be located at the left side of the base and is not 0.

Fig. 7 is a schematic diagram at the end of step S2 in the method of assembling the sleeve with the heating coil according to the present disclosure, when the sleeve is in interference fit with the sleeve assembling tool, showing that the gap d between the inner peripheral wall of the sleeve and the outer peripheral surface of the base is located at the left side of the base and the gap d is 0.

Fig. 8 is an assembly view of an eccentric and sleeve assembly tooling according to the present disclosure, showing the radial offset e of the eccentric axis from the base axis.

Fig. 9 is a schematic view when step S3 starts to be performed in the method of assembling the sleeve with the heating coil according to the present disclosure.

Fig. 10 is a schematic diagram at the end of step S3 in a method of assembling a sleeve with a heating coil, wherein the sleeve has been fully inserted and interference fit in the heating coil, according to the present disclosure.

Wherein reference numerals are as follows:

100 sleeve assembly tooling 21 screw hole

1 spanner 23 eccentric wheel axis

11 base D1 thickness direction

11a top surface e radial deviation

11b female screw hole 3 screw

11c base axis 31 cap body

11d outer peripheral surface 31b screw axis

12 handle 32 screw

12a friction line 200 sleeve

13 inner peripheral wall of annular flange 2a

14 axial end of boss 2b

15 groove d gap

2 eccentric wheel 300 heating coil

Detailed Description

The drawings illustrate embodiments of the present disclosure, and it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms and that, therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously practice the disclosure.

[ sleeve Assembly tooling ]

Referring to fig. 1 to 8, a sleeve assembling tool 100 for a single-station type molding equipment according to the present disclosure, the sleeve assembling tool 100 includes a wrench 1, an eccentric 2, and a screw 3. The wrench 1 comprises a base 11 and a handle 12. The base 11 is cylindrical in shape, the base 11 having a top surface 11a and an internally threaded bore 11b extending inwardly from the top surface 11a and offset from the base axis 11 c. The handle 12 is connected to the base 11 at a side remote from the top surface 11a of the base 11, and the handle 12 is coaxial with the base 11, the handle 12 being for the operator to hold. The eccentric 2 is provided with a screw hole 21 penetrating the eccentric 2 in the thickness direction D1 of the eccentric 2 at a position deviated from the eccentric axis 23. The screw 3 has a cap 31 and a screw shaft 32, the cap 31 is cylindrical, the screw shaft 32 is screwed through the screw hole 21 of the eccentric 2 and screwed into the internally threaded hole 11b of the base 11, and the screw axis 31b of the screw 3 is coaxial with the internally threaded hole 11b and the screw hole 21. During locking operation, the screw 3 and the eccentric wheel 2 are assembled on the base 11, the screw rod 32 is screwed into the internally threaded hole 11b of the base 11, the cap 31 is spaced apart from the eccentric wheel 2, the eccentric wheel 2 is spaced apart from the base 11, an operator holds the handle 12 to insert the base 11 together with the eccentric wheel 2 in threaded connection with the base 11 and the screw 3 into the sleeve 200, the cap 31 of the screw 3 abuts against the inner peripheral wall 2a of the sleeve 200, the handle 12 rotates the handle 12 and the sleeve 200 relatively, the sleeve 200 drives the cap 31 of the screw 3 to rotate, the cap 31 drives the screw rod 32 to continue to be screwed into the internally threaded hole 11b of the base 11, the eccentric wheel 2 synchronously rotates along with the screw rod 32 due to the threaded connection with the screw rod 32 because the eccentric wheel 2 is spaced apart from the cap 31 and the base 11, the eccentric wheel 2 is contacted with the inner peripheral wall 2a of the sleeve 200 in the synchronous rotation process of the eccentric wheel 2 along with the screw rod 32, the eccentric wheel 2 is not synchronously rotated with the screw rod 32 due to the friction resistance between the eccentric wheel 2 and the inner peripheral wall 2a of the sleeve 200 and the fact that the two axial sides of the eccentric wheel 2 are free of friction force, the screw rod 32 is continuously screwed into the inner threaded hole 11b of the base 11 in the rotation process of the screw hole 21 of the eccentric wheel 2, so that the interval between the cap body 31 and the eccentric wheel 2 is reduced, when the interval between the cap body 31 and the eccentric wheel 2 is zero, the cap body 31 and the eccentric wheel 2 are in surface friction to forcibly drive the eccentric wheel 2 to synchronously and co-rotate together, the rotation of the cap body 31 simultaneously ensures that the screw rod 32 is continuously screwed into the inner threaded hole 11b of the base 11, the forcibly driven eccentric wheel 2 gradually exerts an increasing radial outward force on the inner peripheral wall 2a of the sleeve 200 due to the eccentric motion in the rotation process, the reaction force of the gradually increasing radially outward force causes the gap d between the inner peripheral wall 2a of the sleeve 200 and the outer peripheral surface 11d of the base 11 to gradually decrease until disappearing at a position opposite to the portion of the inner peripheral wall 2a of the sleeve 200 that is in contact with the eccentric 2, and when the gap d disappears, the contact of the outer peripheral surface 11d of the base 11 with the inner peripheral wall 2a of the sleeve 200 and the contact of the eccentric 2 with the inner peripheral wall 2a of the sleeve 200 constitute an anti-rotation moment against the relative rotation of the sleeve 200 and the handle 12, so that the sleeve 200 and the base 11 and the eccentric 2 achieve locking for the assembly of the sleeve 200 with the heating coil 300. The unlocking operation and the locking operation are opposite in rotation direction, the base 11 drives the screw rod 32 to rotate relative to the eccentric wheel 2 to overcome the anti-rotation moment in the locking process, the cap body 31 is separated from the eccentric wheel 2, the eccentric wheel 2 is returned to a state of synchronously rotating along with the screw rod 32 only due to the threaded connection with the screw rod 32, and accordingly an operator can hold the handle 12 to withdraw the base 11, the eccentric wheel 2 in threaded connection with the base 11 and the screw 3 from the sleeve 200.

Compared to pliers of the background art, referring to fig. 6 and 7, the sleeve assembling tool 100 of the present disclosure rotates relatively through the sleeve 200 and the base 11, drives the screw 3 to rotate to drive the eccentric wheel 2 until the interval between the cap 31 of the screw 3 and the eccentric wheel 2 becomes smaller until the interval disappears, and the forced eccentric wheel 2 applies a gradually increasing radial outward force to the inner circumferential wall 2a of the sleeve 200, and the reaction force of the gradually increasing radial outward force gradually reduces the interval d between the inner circumferential wall 2a of the sleeve 200 and the outer circumferential surface 11d of the base 11 until the interval disappears, so as to form an anti-rotation moment resisting the relative rotation of the sleeve 200 and the handle 12, and further lock the sleeve 200 with the base 11 and the eccentric wheel 2, i.e. lock the sleeve assembling tool 100 with the sleeve 200, so as to ensure that the sleeve 200 cannot loose or fall off with the sleeve assembling tool 100 in the rotation process, so as to improve the stability of the subsequent sleeve 200 and the heating coil 300 assembly.

Compared with the clamping of pliers in the prior art, the sleeve assembly tool 100 disclosed by the invention can lock the sleeve 200 by adopting the relative rotation of the sleeve 200 and the base 11, is convenient for an operator to control the force, and avoids damage to the sleeve 200 due to overlarge clamping force.

Compared to pliers of the background art, referring to fig. 6 and 8, the sleeve assembling tool 100 of the present disclosure can accurately control radial deviation between the eccentric wheel axis 23 and the base axis 11c and between the eccentric wheel axis 31b, so as to accurately control the sleeve position and the eccentric moment, and further adjust the eccentric moment to adjust the position of the sleeve 200 relative to the base 11, thereby realizing accurate positioning of the sleeve 200, adapting to sleeves with different diameters or sizes, and being beneficial to accurate assembly between the sleeve 200 and the heating coil 300. The sleeve assembling tool 100 of the present disclosure can also adjust the contact pressure between the sleeve 200 and the base 11, for example, can adjust the pressure applied by a human hand on the sleeve 200, that is, adjust the locking moment to ensure that the connection between the sleeve 200 and the base 11 is stable, so that the sleeve assembling tool 100 can firmly clamp the sleeve. When the eccentric distance of the eccentric 2 is large and a large contact pressure is applied, the friction between the sleeve 200 and the base 11 increases, and the eccentric moment and the locking moment correspondingly increase. Conversely, when the eccentric distance of the eccentric 2 is smaller or a smaller contact pressure is applied, the friction force decreases, and the eccentric moment and the locking moment also decrease.

In an example, referring to fig. 6, a gap d between the inner peripheral wall 2a of the sleeve 200 and the outer peripheral surface 11d of the base 11 at a position opposite to a portion of the inner peripheral wall 2a of the sleeve 200 contacting the eccentric 2 is shown to the left of the base 11 and is not 0. Referring to fig. 7, a gap d between the inner peripheral wall 2a of the sleeve 200 and the outer peripheral surface 11d of the base 11 at a position opposite to a portion of the inner peripheral wall 2a of the sleeve 200 contacting the eccentric 2 is shown to the left of the base 11 and is 0.

In one example, screw 3 is an M6 screw. The screw 3 may also be any other screw suitable for the respective eccentric 2.

In one example, referring to fig. 8, the radial offset e of the eccentric axis 23 from the base axis 11c is 0.225mm. In one example, referring to the partial enlarged view of fig. 6, a first radial offset of the screw axis 31b from the base axis 11c, a second radial offset of the screw axis 31b from the eccentric axis 23, the difference between the second radial offset and the first radial offset being equal to the radial offset e of the eccentric axis 23 from the base axis 11 c. By accurately controlling the radial offset between the eccentric wheel axis 23 and the base axis 11c and the screw axis 31b, precise control of the sleeve position and the eccentric moment can be achieved to accommodate sleeves of different diameters or sizes. It should be noted that, when the screw 3 and the eccentric 2 are assembled on the base 11, referring to the partial enlarged view of fig. 6 and fig. 8, the radial deviation e of the eccentric axis 23 from the base axis 11c may be 0, or the magnitude of the radial deviation e may be sufficient to facilitate the insertion of the base 11 together with the eccentric 2 screwed with the base 11 and the screw 3 into the sleeve 200, and the gap d between the base 11 and the sleeve 200 is not 0.

In one example, the wrench 1 further comprises an annular flange 13, the annular flange 13 being connected between the base 11 and the handle 12 and protruding radially outwards with respect to the base 11, the annular flange 13 being adapted to support and abut the axial end 2b of the sleeve 200, ensuring that the sleeve does not axially shift or slide, contributing to an improved accuracy and stability of the operation of the wrench 1. The annular flange 13 is capable of withstanding greater forces and torques for transmitting externally applied forces and torques to the base 11 and handle 12, thereby increasing the structural strength and durability of the wrench 1.

In an example, the outer surface of the handle 12 is provided with friction lines 12a, the friction lines 12a being used to increase the friction of the hand, so that the wrench 1 is more stable when operated, reducing the risk of accidental slipping.

In an example, the wrench 1 further comprises a boss 14 and a groove 15, the boss 14 being located at an end of the handle 12 remote from the eccentric 2, the groove 15 being provided between the boss 14 and the handle 12, the groove 15 being for winding a hanging rope.

In one example, the wrench 1 is an integrally formed, self-non-removable single piece.

In one example, the wrench 1, eccentric 2 and screw 3 are all steel. In another example, the wrench 1, eccentric 2 and screw 3 are made of 303 stainless steel, which is inexpensive, corrosion resistant and hard.

[ method of assembling a sleeve with a heating coil in a single-station mold press ]

Referring to fig. 6 and 7 and fig. 9 and 10, a method of assembling a sleeve 200 with a heating coil 300 in a single-station mold press according to the present disclosure employs a sleeve assembling tool 100, and includes the steps of:

s1, respectively holding the sleeve assembling tool 100 and the sleeve 200 by two hands;

s2, enabling the handle 12 and the sleeve 200 to rotate relatively, and executing locking operation of the sleeve 200, the base 11 and the eccentric wheel 2;

s3, holding the handle 12 and the heating coil 300 of the sleeve assembly tool 100 sleeved with the sleeve 200 by two hands respectively, and rotating or pushing the sleeve assembly tool 100 and/or the heating coil 300 so that the sleeve 200 is completely inserted and is in interference fit in the heating coil 300;

s4, holding the handle 12 and the heating coil 300 of the sleeve assembling tool 100 sleeved with the sleeve 200 by two hands respectively, and executing unlocking operation opposite to the locking operation action so as to withdraw the sleeve assembling tool 100 from the sleeve 200.

All advantages and effects of the method of assembling a sleeve with a heating coil in a single-station type molding apparatus according to the present disclosure are the same as those of the aforementioned sleeve assembling tool, so a description of all advantages and effects of the method of assembling a sleeve with a heating coil in a single-station type molding apparatus according to the present disclosure is omitted herein.

The various exemplary embodiments are described using the above detailed description, but are not intended to be limited to the combinations explicitly disclosed herein. Thus, unless otherwise indicated, the various features disclosed herein may be combined together to form a number of additional combinations that are not shown for the sake of brevity.

Claims (8)

1. A sleeve assembling tool is used for single-station type mould pressing equipment and is characterized in that,

the socket assembly fixture (100) comprises a spanner (1), an eccentric wheel (2) and a screw (3),

the wrench (1) comprises a base (11) and a handle (12);

the base (11) is cylindrical, the base (11) has a top surface (11 a) and an internally threaded bore (11 b) extending inwardly from the top surface (11 a) and offset from the base axis (11 c),

the handle (12) is connected to the base (11) at one side far away from the top surface (11 a) of the base (11), the handle (12) is coaxial with the base (11), and the handle (12) is used for being held by an operator;

the eccentric wheel (2) is provided with a screw hole (21) penetrating through the eccentric wheel (2) along the thickness direction (D1) of the eccentric wheel (2) at a position deviating from the axis (23) of the eccentric wheel,

the screw (3) is provided with a cap body (31) and a screw rod (32), the cap body (31) is cylindrical, the screw rod (32) is in threaded connection with a screw hole (21) penetrating through the eccentric wheel (2) and is screwed into an internal threaded hole (11 b) of the base (11), and the screw axis (31 b) of the screw (3) is coaxial with the internal threaded hole (11 b) and the screw hole (21);

during locking operation, the screw (3) and the eccentric wheel (2) are assembled on the base (11), the screw rod (32) is screwed into the internally threaded hole (11 b) of the base (11), the cap body (31) is spaced from the eccentric wheel (2), the eccentric wheel (2) is spaced from the base (11), an operator holds the handle (12) to insert the base (11) together with the eccentric wheel (2) in threaded connection with the base (11) and the screw (3) into the sleeve (200), the cap body (31) of the screw (3) is abutted with the inner peripheral wall (2 a) of the sleeve (200), the handle (12) is rotated to enable the handle (12) and the sleeve (200) to rotate relatively, the sleeve (200) drives the cap body (31) of the screw (3) to rotate, the cap body (31) drives the screw rod (32) to continue to be screwed into the internally threaded hole (11 b) of the base (11), the eccentric wheel (2) is synchronously rotated along with the screw rod (32) due to the fact that the eccentric wheel (2) is spaced from the cap body (31) and the base (11), the eccentric wheel (2) is in contact with the inner peripheral wall (2 a) of the sleeve (200) along with the screw (32) in the synchronous rotation process, the eccentric wheel (2) is not synchronously rotated with the screw (32) due to friction resistance between the eccentric wheel (2) and the inner peripheral wall (2 a) of the sleeve (200) and no friction force at the two axial sides of the eccentric wheel (2), the screw (32) is continuously screwed into the inner threaded hole (11 b) of the base (11) in the rotation process of the screw hole (21) of the eccentric wheel (2), so that the interval between the cap body (31) and the eccentric wheel (2) is reduced, when the interval between the cap body (31) and the eccentric wheel (2) is zero, the surface friction is generated between the cap body (31) and the eccentric wheel (2) to forcibly drive the eccentric wheel (2) to synchronously and synchronously rotate in the same direction, the screw (32) is continuously screwed into the inner threaded hole (11 b) of the base (11), the forcibly driven eccentric wheel (2) is gradually applied to the outer peripheral wall (200) in the radial direction due to the gradual movement of the eccentric wheel (2) in the rotation process, the reaction force of the gradually increasing radial outward force causes a gap (d) between an inner peripheral wall (2 a) of the sleeve (200) and an outer peripheral surface (11 d) of the base (11) to gradually decrease until disappearing at a position opposite to a position where the inner peripheral wall (2 a) of the sleeve (200) contacts with the eccentric (2), and when the gap (d) disappears, the contact of the outer peripheral surface (11 d) of the base (11) with the inner peripheral wall (2 a) of the sleeve (200) and the contact of the eccentric (2) with the inner peripheral wall (2 a) of the sleeve (200) constitute an anti-rotation moment against the relative rotation of the sleeve (200) and the handle (12), so that the sleeve (200) is locked with the base (11) and the eccentric (2) for assembly of the sleeve (200) with the heating coil (300);

the unlocking operation and the locking operation are opposite in rotation direction, the base (11) drives the screw rod (32) to rotate relative to the eccentric wheel (2) to overcome the anti-rotation moment in the locking process, the cap body (31) is separated from the eccentric wheel (2), the eccentric wheel (2) returns to a state of synchronously rotating along with the screw rod (32) only due to threaded connection with the screw rod (32), and accordingly an operator can hold the handle (12) to withdraw the base (11), the eccentric wheel (2) in threaded connection with the base (11) and the screw (3) from the sleeve (200).

2. The sleeve assembly tooling of claim 1, wherein,

the radial offset (e) of the eccentric axis (23) from the base axis (11 c) is 0.225mm.

3. The sleeve assembly tooling of claim 1, wherein,

the wrench (1) further comprises an annular flange (13), the annular flange (13) being connected between the base (11) and the handle (12) and protruding radially outwards with respect to the base (11), the annular flange (13) being intended to support and abut an axial end (2 b) of the sleeve (200).

4. The sleeve assembly tooling of claim 1, wherein,

the outer surface of the handle (12) is provided with friction lines (12 a), and the friction lines (12 a) are used for increasing the friction force of hands.

5. The sleeve assembly tooling of claim 1, wherein,

the wrench (1) further comprises a boss (14) and a groove (15), wherein the boss (14) is located at one end, far away from the eccentric wheel (2), of the handle (12), the groove (15) is arranged between the boss (14) and the handle (12), and the groove (15) is used for winding a hanging rope.

6. The sleeve assembly tooling of claim 1, wherein,

the wrench (1) is an integral formed single piece which is not detachable.

7. The sleeve assembly tooling of claim 6, wherein,

the wrench (1), the eccentric wheel (2) and the screw (3) are all made of steel.

8. A method of assembling a sleeve (200) with a heating coil (300) in a single station molding apparatus, characterized in that,

the sleeve assembly tooling (100) of any one of claims 1-7, and the method comprising the steps of:

s1, respectively holding a sleeve assembling tool (100) and a sleeve (200) by two hands;

s2, enabling the handle (12) and the sleeve (200) to rotate relatively, and executing locking operation of locking the sleeve (200) with the base (11) and the eccentric wheel (2);

s3, holding the handle (12) and the heating coil (300) of the sleeve assembly tool (100) sleeved with the sleeve (200) by two hands respectively, and rotating or pushing the sleeve assembly tool (100) and/or the heating coil (300) so as to enable the sleeve (200) to be completely inserted and in interference fit in the heating coil (300);

s4, respectively holding the handle (12) and the heating coil (300) of the sleeve assembly tool (100) sleeved with the sleeve (200) by two hands, and executing unlocking operation opposite to the locking operation action so as to withdraw the sleeve assembly tool (100) from the sleeve (200).