CN111016186B

CN111016186B - Hot melting mechanism

Info

Publication number: CN111016186B
Application number: CN201811174915.9A
Authority: CN
Inventors: 何正鹏; 夏稳进
Original assignee: Fu Ding Electronical Technology Jiashan Co Ltd
Current assignee: Fu Ding Electronical Technology Jiashan Co Ltd
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2023-03-28
Anticipated expiration: 2038-10-09
Also published as: CN111016186A

Abstract

The invention provides a hot melting mechanism which comprises a hot melting head assembly, a depth adjusting assembly and a driving device, wherein the hot melting head assembly comprises a heating rod, a heat conducting block, a heat conducting rod and a plurality of hot melting heads, the heating rod is contained in the heat conducting block, one end of the heat conducting rod is connected with the heat conducting block, and the other end of the heat conducting rod contains the plurality of hot melting heads; the depth adjusting assembly comprises a plurality of elastic pieces with different preset elastic coefficients at least partially, the elastic pieces are accommodated at one end of the heat conducting rod, which is provided with the hot melting head, the number of the elastic pieces is consistent with that of the hot melting head, and one end of each elastic piece is abutted with one end of one hot melting head, which is close to the heat conducting block; the driving device can drive the hot melt head component to move. The hot melting mechanism can meet the requirements of different pressing depths of the same hot melting workpiece.

Description

Hot melting mechanism

Technical Field

The invention relates to the technical field of hot melting, in particular to a hot melting mechanism.

Background

In the production process of electronic products such as notebook computers and the like, the foot pad pieces need to be attached in the foot pad holes in a hot melting mode, and the current hot melting technology is difficult to meet the requirements of different pressing depths of the same foot pad piece. In view of the above, it is desirable to provide a novel heat-melting mechanism to overcome the above problems.

Disclosure of Invention

The invention aims to provide a hot melting mechanism which can realize different pressing depths of the same hot melting workpiece.

In order to achieve the above object, the present invention provides a heat fusion mechanism comprising:

the hot melt head assembly comprises a heating rod, a heat conducting block, a heat conducting rod and a plurality of hot melt heads, the heating rod is accommodated in the heat conducting block, one end of the heat conducting rod is connected with the heat conducting block, and the other end of the heat conducting rod accommodates the plurality of hot melt heads;

the depth adjusting assembly comprises a plurality of elastic pieces with different preset elastic coefficients, the elastic pieces are accommodated at one end of the heat conducting rod, which is provided with the hot melting head, the number of the elastic pieces is consistent with that of the hot melting head, and one end of each elastic piece is abutted with one end of one hot melting head, which is close to the heat conducting block; and

and the driving device can drive the hot melt head assembly to move.

The hot melting mechanism provided by the invention adjusts the pressing depth of the hot melting head assembly on different parts of the hot melting workpiece through the depth adjusting assembly, wherein the depth adjusting assembly comprises a plurality of elastic pieces, different elastic coefficients can be preset, so that the hot melting head assembly realizes different pressing depths in the same pressure state, the hot melting head can flexibly contact with the surface of a product, and the surface of the product is prevented from being scratched. In addition, the hot melting mechanism provided by the invention has high automation degree and simple structure, and is easy to realize industrial application.

Drawings

Fig. 1 is a schematic perspective view of a heat-melting mechanism according to an embodiment of the present invention.

Fig. 2 is a perspective view of a partial structure of the heat-fusing mechanism shown in fig. 1.

Fig. 3 is a schematic exploded view of a part of the structure of the heat fusing mechanism shown in fig. 2.

Fig. 4 is an exploded view of a part of the structure of the heat fusing mechanism shown in fig. 2.

Fig. 5 is a sectional view of a part of the structure of the heat fusion mechanism shown in fig. 2 taken along the line V-V.

Description of the main elements

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The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 2 and fig. 4, an embodiment of the invention provides a thermal melting mechanism 100, which includes a thermal melting head assembly 10, a depth adjusting assembly 20 and a driving device 30. The depth adjusting assembly 20 is installed in the hot-melt head assembly 10, and can adjust the pressing depth of the hot-melt head assembly 10 to different parts of the hot-melt workpiece, and the driving device 30 is used for driving the hot-melt head assembly 10 to move.

The hot melting mechanism 100 can be used in the production process of electronic products such as notebook computers and the like, and automatically hot-melt and attach the foot pad pieces to the foot pad holes. In practical use, the driving device 30 drives the hot melt head assembly 10 to perform a reciprocating movement to perform a continuous operation, and the depth adjusting assembly 20 moves along with the hot melt head assembly 10.

As shown in fig. 1, in the present embodiment, the driving device 30 includes a driving member 31, a screw rod 32, a screw nut 33 and a moving bracket 34, wherein the screw nut 33 is sleeved outside the screw rod 32 and is in threaded engagement with the screw rod 32. The moving bracket 34 is connected to the feed screw nut 33 and the thermal fuse head assembly 10, respectively. The driving member 31 can drive the screw rod 32 to rotate, and the screw rod nut 33 drives the moving bracket 34 and the hot melt head assembly 10 to reciprocate along the screw rod direction along with the rotation of the screw rod 32. In this embodiment, the driving member 31 is a servo motor.

Referring to fig. 2 to 4, the thermal fuse head assembly 10 includes a heating rod 11, a heat conducting block 12, a heat conducting rod 13 and a plurality of thermal fuse heads 14, wherein the heating rod 11 is accommodated in the heat conducting block 12, the heat conducting rod 13 is connected to the heat conducting block 12, and the plurality of thermal fuse heads 14 are accommodated at one end of the heat conducting rod 13. Specifically, the heating rod 11 has an energization heat generating function, that is, generates heat when energized, and the heat conduction block 12 transfers the heat generated by the heating rod 11 to the heat conduction rod 13 to be further transferred to the plurality of thermal fusion heads 14. The plurality of fuse heads 14 are heated to an elevated temperature to perform a fuse operation.

Referring to fig. 5, in the present embodiment, the heat conducting rod 13 is cylindrical, one end of the heat conducting rod is connected to the heat conducting block 12, and the other end of the heat conducting rod is opened with a plurality of receiving slots 131, wherein the number of the receiving slots 131 is the same as that of the fuse heads 14, and each fuse head 14 is received in one receiving slot 131.

As shown in fig. 4, the depth adjustment assembly 20 includes a plurality of elastic members 21 with different predetermined elastic coefficients, the number of the elastic members 21 is the same as that of the thermal welding heads 14, each elastic member 21 is accommodated in one accommodating groove 131, and one end of each elastic member 21 abuts against the bottom surface of the accommodating groove 131 and the other end abuts against a corresponding thermal welding head 14, that is, one end of each elastic member 21 abuts against one end of one thermal welding head 14 close to the heat conduction block 12. Therefore, when the elastic member 21 is subjected to a force and changes in length, the corresponding thermal fusing head 14 can slide along the corresponding accommodating groove 131. The elastic member 21 may be a spring, but is not limited thereto.

It should be noted that, when the elastic coefficients preset by the plurality of elastic members 21 are different, and the elastic members 21 are subjected to the same pressure, the length changes of the elastic members 21 are inconsistent, so that the plurality of thermal fuse heads 14 in the thermal fuse head assembly 10 can generate different pressing depths for thermally fusing the workpieces. It can be understood that, under the condition of consistent free length, the larger the elastic coefficient is, the smaller the contraction of the elastic element 21 when being pressed is, and the larger the pressing depth generated on the hot-melt workpiece is; the smaller the elastic coefficient is, the larger the elastic member 21 contracts under pressure, and the smaller the pressing depth to the hot-melt workpiece is. The elastic coefficients of the elastic members 21 are influenced by the pressing depth required by different parts of the hot-melt workpiece, and therefore, can be preset according to actual conditions.

It can be understood that, one end of the thermal melting head 14 far from the elastic element 21 extends out of the accommodating groove 131 so as to facilitate the thermal melting operation, in this embodiment, the thermal dissipation hole 141 is formed at one end of the thermal melting head 14 extending out of the accommodating groove 131, so as to avoid the bulge phenomenon of the thermal melting workpiece.

Referring to fig. 3 and 4, the thermal fuse mechanism 100 further includes a plurality of first guiding studs 40, and the number of the first guiding studs 40 is the same as that of the thermal fuse head 14. Correspondingly, the heat conducting rod 13 is provided with a plurality of first guiding holes 132, the number of the first guiding holes 132 is the same as that of the accommodating grooves 131, and each first guiding hole 132 is communicated with one accommodating groove 131. Each first guide post 40 is connected to one of the thermal fuse heads 14 at one end and received in one of the first guide holes 132 at the other end. Therefore, when the elastic element 21 stretches, the corresponding thermal fuse head 14 can drive the corresponding first guide post 40 to slide along the corresponding first guide hole 132, so as to prevent the thermal fuse head 14 from deviating during sliding. It can be appreciated that the strength of the thermal fuse head 14 becomes lower at higher temperatures, and it is therefore necessary to limit the sliding direction of the thermal fuse head 14 to reduce the cumulative error.

Further, the heat-sealing mechanism 100 may further include a heat insulating ring 51 and an outer sleeve 52, and in the present embodiment, the heat insulating ring 51 has an annular shape and the outer sleeve 52 has a substantially cylindrical shape. The heat-insulating ring 51 is sleeved outside the heat-conducting rod 13 and abuts against the heat-conducting block 12, and the outer sleeve 52 is sleeved outside the heat-conducting rod 13 and abuts against one side of the heat-insulating ring 51 opposite to the heat-conducting block 12. It can be understood that the heat-conducting block 12 and the heat-conducting rod 13 have higher temperature during the hot melting operation, and the heat-insulating ring 51 and the outer sleeve 52 can reduce the heat transfer with the nearby air, thereby playing a certain role in shielding and protecting.

Referring to fig. 5, the heat-melting mechanism 100 may further include a first retaining ring 61, a second retaining ring 62, a third retaining ring 63, and a locking screw 64, wherein the first retaining ring 61, the second retaining ring 62, and the third retaining ring 63 are all sleeved outside the heat conducting rod 13 and are contained in the outer sleeve 52. Specifically, the outer sleeve 52 includes a first cavity 521, a second cavity 522 and a third cavity 523, which are adjacently disposed and communicated in sequence along a central axis thereof, where the first cavity 521 is located on a side close to the heat conduction block 12, and the third cavity 523 is located on a side of the second cavity 522 away from the first cavity 521.

In this embodiment, the first chamber 521, the second chamber 522 and the third chamber 523 are all cylindrical, the cross-sectional area of the first chamber 521 is larger than that of the second chamber 522, and the cross-sectional area of the second chamber 522 is larger than that of the third chamber 523. The outer sleeve 52 is disposed coaxially with the heat conducting rod 13, and the heat conducting rod 13 penetrates through the first cavity 521, the second cavity 522 and the third cavity 523.

The first clamping ring 61 is annular and is limited and contained in the first cavity 521, and it can be understood that the inner diameter of the first clamping ring 61 corresponds to the diameter of the heat conducting rod 13, and the outer diameter corresponds to the diameter of the first cavity 521, so that the outer surface of the first clamping ring 61 is attached to the inner surface of the outer sleeve 52, and the inner surface is attached to the outer surface of the heat conducting rod 13.

The second capture ring 62 is cylindrical and is accommodated in the second cavity 522 and the third cavity 523, that is, the second capture ring 62 is partially accommodated in the third cavity 523. The second snap ring 62 has an inner diameter corresponding to the diameter of the heat conduction rod 13 and an outer diameter corresponding to the diameter of the third cavity 523. One end of the second retention ring 62 away from the third cavity 523 extends outward to form a flange 621, and it can be understood that the outer diameter of the flange 621 is inevitably larger than the diameter of the third cavity 523, so that the flange 621 is limited and contained in the second cavity 522.

The third positioning ring 63 is located between the first positioning ring 61 and the second positioning ring 62, and the third positioning ring 63 is in a shape of a major arc and can slide relative to the heat conduction rod 13. The third clamp ring 63 can adjust the size of the inner circle of the major arc by the cooperation of the locking screw 64, and therefore, the locking screw 64 can lock the third clamp ring 63 on the heat conduction rod 13.

Referring to fig. 4, in the present embodiment, the third retaining ring 63 is convexly provided with a limiting bar 631, and correspondingly, the outer sleeve 52 is provided with a limiting hole 524, the limiting bar 631 is received in the limiting hole 524, and when the third retaining ring 63 slides relative to the heat conducting rod 13, the limiting bar 631 slides along the limiting hole 524 to prevent the third retaining ring 63 from rotating.

Further, the heat-melting mechanism 100 may further include a plurality of second guide posts 70, correspondingly, the second positioning ring 62 has a plurality of through holes 622, the outer sleeve 52 has a plurality of second guide holes 525, the number of the second guide posts 70, the number of the through holes 622 and the number of the second guide holes 525 are the same, and one end of each second guide post 70 passes through one through hole 622, and the other end is received in one second guide hole 525. As the second capture ring 62 moves relative to the outer sleeve 52, the second guide posts 70 move along the corresponding second guide holes 525 to prevent rotation of the second capture ring 62 relative to the outer sleeve 52.

Further, the heat-sealing mechanism 100 may further include an adjusting screw 65. The outer sleeve 52 is provided with a through hole 526, and one end of the adjusting screw 65 passes through the through hole 526 to abut against the heat conducting rod 13 and is clamped between the first clamping ring 61 and the third clamping ring 63. It can be understood that the heat conducting rod 13 becomes weaker at higher temperature, and repeated pressing down of the workpiece to be heat-fused may cause the central axis thereof to be deviated, so that the first, second and third snap rings 61, 62 and 63 are used for fine adjustment. In actual use, when the locking screw 64 is in the unlocked state by adjusting the screw 65, the distance between the first and third retainer rings 61 and 63 can be adjusted by sliding the third retainer ring 63, and the second retainer ring 62 can also be adjusted in position when the position of the third retainer ring 63 is changed.

In addition, other modifications within the spirit of the invention may occur to those skilled in the art, and such modifications are, of course, included within the scope of the invention as claimed.

Claims

1. A hot melting mechanism is characterized in that: it includes:

the hot melt head assembly comprises a heating rod, a heat conduction block, a heat conduction rod and a plurality of hot melt heads, wherein the heating rod is contained in the heat conduction block, one end of the heat conduction rod is connected with the heat conduction block, and the other end of the heat conduction rod contains the plurality of hot melt heads;

the driving device can drive the hot melt head assembly to move;

the hot melting mechanism further comprises:

the heat conducting rod is provided with a plurality of accommodating grooves and a plurality of first guide holes, the number of the first guide posts, the number of the accommodating grooves and the number of the first guide holes are consistent with that of the hot melting heads, and each first guide hole is communicated with one accommodating groove; each accommodating groove accommodates one elastic piece and one hot melting head, one end of each first guide column is connected with one hot melting head, and the other end of each first guide column is accommodated in one corresponding first guide hole; the elastic piece stretches and retracts to enable the corresponding hot melt belts to drive the corresponding first guide columns to slide along the corresponding first guide holes;

the hot melting mechanism also comprises a heat insulation ring, an outer sleeve, a first clamping ring, a second clamping ring and a third clamping ring,

the heat-insulating ring is sleeved outside the heat-conducting rod and abutted against the heat-conducting block, and the outer sleeve is sleeved outside the heat-conducting rod and abutted against one side, opposite to the heat-conducting block, of the heat-insulating ring;

the first clamping ring is sleeved outside the heat conducting rod and is contained in the outer sleeve; the outer sleeve comprises a first cavity and a second cavity which are adjacent, the sectional area of the first cavity is larger than that of the second cavity, and the first clamping ring is limited and contained in the first cavity;

the second clamping ring is sleeved outside the heat conducting rod and is contained in the outer sleeve; the outer sleeve further comprises a third cavity, the third cavity is positioned on one side of the second cavity, which is far away from the first cavity, and the cross-sectional area of the third cavity is smaller than that of the second cavity; the clamping ring part is accommodated in the third cavity, one end of the clamping ring part, which is far away from the third cavity, is provided with a flange, and the flange is accommodated in the second cavity in a limiting manner;

the third clamping ring is sleeved outside the heat conducting rod and is contained in the second cavity, the third clamping ring is positioned between the first clamping ring and the second clamping ring, and the third clamping ring is in a major arc shape and can slide relative to the heat conducting rod;

the third clamping ring is convexly provided with a limiting strip, the outer sleeve is provided with a limiting hole, and the limiting strip slides along the limiting hole when the third clamping ring slides relative to the heat conducting rod;

the hot melting mechanism further comprises a plurality of second guide columns, a plurality of via holes are formed in the second clamping ring, a plurality of second guide holes are formed in the outer sleeve, the number of the second guide columns, the number of the via holes and the number of the second guide holes are consistent, one end of each second guide column penetrates through one via hole, and the other end of each second guide column is accommodated in one second guide hole; the second clamping ring can move relative to the outer sleeve and drive the second guide column to move along the corresponding second guide hole;

the hot melting mechanism further comprises a locking screw, and the locking screw can lock the third clamping ring on the heat conducting rod.

2. A heat staking mechanism according to claim 1, wherein: and one end of each hot melting head, which is far away from the heat conducting block, extends out of the heat conducting rod and is provided with a heat radiating hole.

3. A heat staking mechanism according to claim 1, wherein: the driving device comprises a driving piece, a screw rod nut and a movable support, the screw rod nut is sleeved outside the screw rod and is in threaded fit, and the movable support is respectively connected with the screw rod nut and the hot melt head assembly; the driving piece can drive the screw rod to rotate, and the screw rod nut drives the movable support and the hot melt head assembly to reciprocate along the direction of the screw rod along with the rotation of the screw rod.