阅读说明：本技术 具刚性提升的皮带移动机构 (Belt moving mechanism with rigid lifting ) 是由 孙颖 于 2019-10-18 设计创作，主要内容包括：本发明提供一种具刚性提升的皮带移动机构,其包含一基座、一滑座、一驱动单元、一定位皮带,以及一传动皮带,滑座设于基座而可沿一直线方向往复滑动,驱动单元设于滑座,定位皮带和传动皮带两端皆固设在基座且分别具有一齿排,定位皮带和传动皮带的齿排相对啮合,并有一绕设段绕出定位皮带而啮合传动地绕设在驱动单元的驱动轮。当驱动轮转动时,带动绕设段在传动皮带上连续变换位置,同时牵引滑座于基座上沿直线方向滑动,利用定位皮带和传动皮带的组合以提升刚性,藉此构成本发明。(The invention provides a belt moving mechanism with rigidity improvement, which comprises a base, a sliding seat, a driving unit, a positioning belt and a transmission belt, wherein the sliding seat is arranged on the base and can slide in a reciprocating manner along a linear direction, the driving unit is arranged on the sliding seat, two ends of the positioning belt and two ends of the transmission belt are fixedly arranged on the base and respectively provided with a tooth row, the tooth rows of the positioning belt and the tooth rows of the transmission belt are meshed oppositely, and a winding section winds out of the positioning belt and is wound on a driving wheel of the driving unit in a meshing transmission manner. When the driving wheel rotates, the winding section is driven to continuously change positions on the transmission belt, and meanwhile, the sliding seat is drawn to slide on the base along the linear direction, and the rigidity is improved by the combination of the positioning belt and the transmission belt, so that the invention is formed.)

1. A belt shifting mechanism with stiffness boosting comprising:

a base;

the sliding seat is arranged on the base and can slide on the base in a reciprocating manner along a linear direction;

the driving unit is arranged on the sliding seat and comprises a driving wheel which can be driven to rotate;

the two ends of the positioning belt are fixedly arranged on the base and extend along the linear direction, the positioning belt is provided with a first tooth row, and the first tooth row is arranged between the two ends of the positioning belt; and

a driving belt, its both ends also set firmly base and laminating location belt and extension, driving belt has a second tooth row, the second tooth row is located between driving belt's the both ends, driving belt with the second tooth row with first tooth row meshes relatively, and has one around establishing the section around establishing location belt and meshing transmission ground around establishing the drive wheel, the drive wheel rotates in order to drive around establishing the section and being in continuous transform position on the driving belt, pulls simultaneously the slide in follow on the base the rectilinear direction slides.

2. The belt moving mechanism with rigidity improvement as claimed in claim 1, wherein the driving unit has a plurality of pressing rollers, the pressing rollers respectively press the driving belt at two sides of the winding section to fit the positioning belt, so that the driving belt can maintain the second row of teeth to be meshed with the first row of teeth except the winding section.

3. The belt shifting mechanism with rigidity enhancement of claim 2, wherein the positioning belt has a support member on the opposite side of the drive belt to keep the first row of teeth and the second row of teeth of the drive belt engaged with each other.

4. The belt moving mechanism with rigidity improvement as claimed in claim 3, wherein the supporting member is a plurality of back rollers, the plurality of back rollers are disposed on the sliding seat, and the plurality of back rollers are opposite to the plurality of pressing rollers, the plurality of pressing rollers and the plurality of back rollers move synchronously with the sliding seat, and when the plurality of pressing rollers press the transmission belt to adhere to the positioning belt, the plurality of back rollers provide back support for the positioning belt.

5. The belt moving mechanism with rigidity improvement as claimed in claim 3 or 4, wherein the width of the positioning belt is larger than the width of the transmission belt, the positioning belt extends a positioning portion with respect to the transmission belt when the second row of teeth and the first row of teeth are engaged relatively, the supporting member includes a fixing seat fixed to the base, and the positioning belt is held and positioned by the fixing seat along the linear direction by the positioning portion.

6. The belt moving mechanism with rigidity improvement of claim 5, wherein the fixing base comprises an L-shaped block and a back plate, and the L-shaped block and the back plate are clamped and positioned at both sides of the positioning portion.

7. The belt moving mechanism with rigidity improvement as claimed in claim 3, wherein the supporting member is a fixed back plate provided along a length of the positioning belt, and the positioning belt is fixed to the fixed back plate so as to maintain the positioning belt in a straight line shape.

8. The belt shifting mechanism with rigidity improvement as claimed in claim 1, wherein the driving unit comprises a servo motor, the servo motor is connected to a first transmission member, the driving wheel is provided with a second transmission member, and the first transmission member and the second transmission member are connected by a connecting member in a transmission manner.

9. The belt shifting mechanism with rigidity improvement as claimed in claim 8, wherein the first transmission member and the second transmission member are both pulleys, and the connecting member is a driving belt and is drivingly wound around the first transmission member and the second transmission member.

10. The belt moving mechanism with rigidity enhancement as claimed in claim 1, wherein the base has a holder at each of two different ends, and the two ends of the positioning belt and the driving belt are fixed by the holders and extend in the linear direction.

11. The belt moving mechanism with rigidity improvement as claimed in claim 1 or 10, wherein the positioning belt and the driving belt are two independent belts fixed at both ends to the base.

12. The belt moving mechanism with rigidity improvement as claimed in claim 1 or 10, wherein the positioning belt and the driving belt are formed by a same annular belt body which is fixed at both ends to the base and then divided into two sides.

Technical Field

The invention relates to a transmission mechanism of mechanical equipment, in particular to a belt moving mechanism with rigidity improvement.

Background

At present, industrial mechanical equipment, such as a worktable of a machine tool for driving a workpiece to move or a tool taking and moving mechanism of a tool changing device, always has the linear moving requirement of single axial direction or multiple axial directions, so that a sliding seat is necessary to be installed on the mechanical equipment. In general, the driving of the slide is preferably performed by using a servo motor and a lead screw as a transmission means, which can achieve the requirement of high moving precision, but the cost of the components is relatively high.

In order to reduce the driving cost of the sliding seat, some sliding seats use a rack and a gear as a transmission means, and some sliding seats use a belt and a belt pulley as a transmission means. The rack and the gear are used as transmission means, and although the rack and the gear have better rigidity, the cost of the components is higher compared with the components of a belt and a belt pulley. On the contrary, the belt cooperating with the pulley has relatively low cost, but the belt has flexibility, so that the main problem in transmission is insufficient rigidity, especially when the belt is long and long in transmission distance, the belt will be bent due to insufficient tension provided, the problem of insufficient rigidity is more obvious, and as a result, the precision of the slide transmission is poor.

Therefore, it is the focus of the present invention to solve the above-mentioned problems of conventional sliding seat transmission, especially belt transmission, which obviously has insufficient rigidity.

Disclosure of Invention

In order to solve the above problems, the present invention provides a belt moving mechanism with increased rigidity, in which two belts are engaged with a driving wheel to drive a sliding seat to move, and the two belts are engaged with each other in a tooth-to-tooth manner, and are fixed by one belt during transmission to provide rigidity for stable transmission of the other belt.

One embodiment of the present invention provides a belt moving mechanism with enhanced rigidity, which includes a base, a slide, a driving unit, a positioning belt, and a transmission belt, wherein the slide is disposed on the base and can slide on the base in a linear direction. The driving unit is arranged on the sliding seat and comprises a driving wheel which can be driven to rotate. The both ends of location belt set firmly at the base and extend along the straight line direction, and the location belt has a first tooth row, and first tooth row is located between the both ends of location belt. The two ends of the transmission belt are also fixedly arranged on the base and are attached to the positioning belt to extend, the transmission belt is provided with a second tooth row, the second tooth row is arranged between the two ends of the transmission belt, the transmission belt is oppositely meshed with the first tooth row through the second tooth row, a winding section is wound out of the positioning belt and is wound on the driving wheel in a meshing transmission mode, the driving wheel rotates to drive the winding section to continuously change positions on the transmission belt, and meanwhile the sliding seat is pulled to slide on the base along the linear direction.

Therefore, the positioning belt and the transmission belt extend along the linear direction, the positioning belt and the transmission belt are attached and are meshed with the first gear row and the second gear row relatively, when the driving wheel rotates to drive the winding section to continuously change positions, other sections of the transmission belt except the winding section are still meshed with the positioning belt relatively, and therefore the positioning belt or the transmission belt cannot deform.

Drawings

Fig. 1 is a perspective view of a tool changer to which a belt moving mechanism according to a first embodiment of the present invention is applied.

Fig. 2 is an exploded view of the matrix blade mount of fig. 1 mounted on a base.

Fig. 3 is a diagram showing the arrangement of the base of the first embodiment of the present invention when the slide having the stand is set.

Fig. 4 is a perspective view of the arrangement of the driving unit, the positioning belt and the transmission belt according to the first embodiment of the present invention, wherein the supporting members are two back-rest rollers.

Fig. 5 is a schematic view of the structure of fig. 4 as seen in the cross-sectional view of fig. 5-5, with the relative positions of the base and the linear slide shown in phantom.

Fig. 6 is a schematic view of the slider shown in fig. 5 being driven to slide to the left by the clockwise rotation of the driving wheel.

Fig. 7 is a perspective view of a driving unit, a positioning belt and a transmission belt according to a second embodiment of the present invention, wherein the supporting member includes two back-rest rollers and two fixing seats.

Fig. 8 is a schematic view of the structure of fig. 7 as seen in the cross-sectional view of fig. 8-8, with the relative positions of the base and the linear slide shown in phantom.

Fig. 9 is a schematic view of another arrangement of the driving unit and the positioning belt and the transmission belt according to the third embodiment of the present invention, wherein the supporting member is a fixed back plate.

Fig. 10 is a schematic view of the structure of fig. 9 taken in the direction of section 10-10, showing the relative positions of the base and the linear slide in phantom.

Detailed Description

For the purpose of illustrating the invention, the central concepts presented in the summary section above are presented in the form of specific embodiments. Various objects in the embodiments are depicted in a scale, size, amount of distortion or displacement suitable for illustration, rather than in the scale of actual components, and are described herein.

Referring to fig. 1 to 10, the present invention provides a belt moving mechanism with increased rigidity, which includes a base 10, a sliding seat 20, a driving unit 30, a positioning belt 40 and a transmission belt 50, and in this embodiment, the application of the tool taking moving mechanism of the tool changer is taken as an example, and the following is a first embodiment, in which:

the slide 20 is disposed on the base 10 and can slide on the base 10 in a reciprocating manner along a linear direction X. In this embodiment, the base 10 is provided with a matrix-type tool holder 11 for placing a plurality of tools 12 used by a machine tool, and the base 10 is provided with a linear slide rail 13, the slide 20 is slidably disposed on the linear slide rail 13 by a slider 21, the slide 20 is provided with a vertical frame 22 in parallel, and the vertical frame 22 is provided with a tool taking device 23, except that the slide 20 can slide on the base 10 in a reciprocating manner along the linear direction X, the tool taking device 23 can also move longitudinally on the vertical frame 22, so that the tool taking device 23 can select a place where the tool 12 is placed to take or place the tool. The driving unit 30 is disposed on the sliding base 20, so that the driving unit 30 can slide with the sliding base 20 on the base 10, and the driving unit 30 includes a driving wheel 31, and the driving wheel 31 can be driven to rotate.

The length of the positioning belt 40 in this embodiment may extend to approximately two ends of the base 10, the two ends of the positioning belt 40 are fixed on the base 10, and the positioning belt 40 extends along the linear direction X when being fixed, the positioning belt 40 has a first tooth row 41, and the first tooth row 41 is disposed between the two ends of the positioning belt 40.

The driving belt 50 and the positioning belt 40 are two independent belts in this embodiment, and the length of the driving belt 50 is approximately equal to the length of the positioning belt 40, both ends of the driving belt 50 are also fixed on the base 10, and the driving belt 50 extends while being attached to the positioning belt 40, and the driving belt 50 has a second rack row 51, the second rack row 51 is disposed between both ends of the driving belt 50, when the driving belt 50 is attached to the positioning belt 40, the driving belt 50 is engaged with the first rack row 41 by the second rack row 51, and a winding section S winds out of the positioning belt 40, and the winding section S is wound around the driving wheel 31 in a meshing transmission manner, and when the driving wheel 31 rotates, the winding section S is driven to continuously change positions on the driving belt 50, and at the same time, the driving wheel 20 slides on the base 10 along the linear direction X.

As mentioned above, the positioning belt 40 and the transmission belt 50 are two independent belts in the embodiment, and the positioning belt 40 and the transmission belt 50 are respectively fixed on the base 10 by two ends, so in the embodiment, the base 10 has two clamping seats 14 respectively at two different ends, and two ends of the positioning belt 40 and the transmission belt 50 are respectively fixed by the two clamping seats 14, so that the positioning belt 40 and the transmission belt 50 extend along the linear direction X. In addition, the positioning belt 40 and the transmission belt 50 may be two independent belts, or the positioning belt 40 and the transmission belt 50 may be a same annular belt (not shown), and when the two ends are fixed on the base 10 (as mentioned above, when fixed by the two holders 14), the annular belt is divided into two sides to form the positioning belt 40 and the transmission belt 50. In other words, the positioning belt 40 and the driving belt 50 may be two separate belts, or may be an integral belt structure.

In the embodiment, the driving unit 30 includes a servo motor 32, the servo motor 32 is connected to a first transmission member, the driving wheel 31 has a second transmission member, and the first transmission member and the second transmission member are connected by a connection member in a transmission manner. Preferably, the first transmission member is a pulley 321, the second transmission member is another pulley 311 disposed on the driving wheel 31, and the connecting member is a driving belt 33, such that the connecting member is disposed around the first transmission member and the second transmission member in a driving manner, that is, the driving belt 33 is disposed around the pulley 311 and the pulley 321 in a driving manner, so that when the servo motor 32 drives the pulley 321 to rotate, the driving belt 33 drives the pulley 311 to rotate, thereby driving the driving wheel 31 to rotate.

In this embodiment, the driving unit 30 further includes two pressing rollers 34, the two pressing rollers 34 respectively press the transmission belt 50 at two sides of the winding section S, so that the transmission belt 50 can be attached to the positioning belt 40, and the transmission belt 50 can maintain the second gear row 51 and the first gear row 41 to be engaged with each other except for the winding section S. In addition, the positioning belt 40 of the present embodiment has a supporting member, which is located on the opposite side of the positioning belt 40 from the driving belt 50, so as to keep the first tooth row 41 and the second tooth row 51 of the driving belt 50 engaged with each other.

Preferably, the support member is two back-rest rollers 42, the two back-rest rollers 42 are disposed on the slide 20, the two back-rest rollers 42 are disposed opposite to the two pressing rollers 34, the two pressing rollers 34 and the two back-rest rollers 42 move synchronously with the slide 20, and the two pressing rollers 34 press the driving belt 50 to fit the positioning belt 40, so that the two back-rest rollers 42 provide back-rest support for the positioning belt 40.

In practical operation of the belt moving mechanism with rigid lifting of the above embodiment, as shown in fig. 5, the sliding seat 20 is located at the right side in the figure, and if the sliding seat 20 is to slide to the left side, the servo motor 32 drives the driving wheel 31 to rotate clockwise, at this time, the winding section S continuously changes position from the right side to the left side on the transmission belt 50, so as to drive the sliding seat 20 to slide to the left side in the figure until the sliding seat 20 slides to the left side in the figure to be positioned as shown in fig. 6; on the other hand, if the servomotor 32 drives the driving wheel 31 to rotate counterclockwise, the winding section S continuously changes position on the transmission belt 50 from left to right (not shown), thereby driving the sliding base 20 to slide to the right in the figure until positioning.

From the above description, it is obvious that the present invention is characterized in that both the positioning belt 40 and the driving belt 50 extend in the linear direction X, when the driving wheel 31 rotates to drive the winding section S to change positions continuously, the driving belt 50, except for the winding section S, which is in abutting engagement with both the positioning belt 40 and with the first row of teeth 41 and the second row of teeth 51, therefore, when the transmission slide carriage 20 slides along the linear direction X, the transmission belt 50 has a function of limiting and guiding the positioning belt 40 by engaging the first gear row 41 with the second gear row 51 even if the transmission distance of the transmission belt 50 is long, so that the transmission belt 50 can have good rigidity during transmission, thereby stably driving the slide carriage 20 to slide along the linear direction X, which has the advantage of lower cost compared with a commonly used lead screw or rack, but can still achieve the effect of good precision during transmission of the slide carriage 20.

As shown in fig. 7 to 8, a second embodiment of the present invention is different from the first embodiment in that the width of the positioning belt 40 of the present embodiment is larger than the width of the transmission belt 50, and when the second row of teeth 51 is engaged with the first row of teeth 41, the positioning belt 40 extends to a positioning portion 43 relative to the transmission belt 50, and the positioning portion 43 extends to the direction of the base 10 in the present embodiment. The supporting member of the present embodiment further includes a fixing seat 44 fixed on the base 10, in addition to the two back-rest rollers 42, and the positioning belt 40 is fixed and positioned by the fixing seat 44 along the linear direction X by the positioning portion 43.

In detail, the two fixing bases 44 of the present embodiment are for example equally disposed between the two clamping bases 14, and each fixing base 44 includes an L-shaped block 441 and a back plate 442, and the L-shaped block 441 and the back plate 442 are clamped at two sides of the positioning portion 43 to be positioned along the linear direction X. The fixing base 44 may be provided along the length of the positioning belt 40, or may be provided at intervals of two or more, so as to fix the positioning belt 40 between the two holders 14 and maintain the positioning belt 40 in a straight line shape. In addition, in a different embodiment, the supporting member may not include the back-rest roller 42, but only the fixing seat 44 clamps and fixes the positioning portion 43 of the positioning belt 40, and the fixing seat 44 provides support for the positioning belt 40, so that the positioning belt 40 can maintain a straight shape.

As shown in fig. 9 to 10, a third embodiment of the present invention is different from the first and second embodiments in that the supporting member may be a fixed back plate 45, the fixed back plate 45 is L-shaped and fixed to the base 10 (not shown) in this embodiment, the fixed back plate 45 is disposed along the length of the positioning belt 40, and the positioning belt 40 is fixed to the fixed back plate 45 (e.g., bolted or glued), so as to maintain the positioning belt 40 in a straight shape.

The above-mentioned examples are only illustrative of the present invention, and are not intended to limit the scope of the present invention. It is intended that the present invention cover all such modifications and variations as fall within the true spirit of the invention.

Description of the symbols

Base 10 matrix type tool holder 11

Linear slide rail 13 of cutter 12

Holder 14 slide 20

Slider 21 stand 22

Knife-taking device 23 driving unit 30

Driving wheel 31 belt wheel 311

Servo motor 32 belt pulley 321

The driving belt 33 presses against the roller 34

First row of teeth 41 of positioning belt 40

Positioning part 43 of backrest roller 42

L-shaped block 441 of the fixing seat 44

The back plate 442 fixes the back plate 45

Second row of teeth 51 of drive belt 50

Winding section S straight line direction X