CN111268373A - Sliding table device and production line applying same - Google Patents

Abstract

The invention discloses a sliding table device and a production line applying the sliding table device, wherein the sliding table device comprises a sliding table which can be driven by a driving cylinder to slide and displace relative to a support, a gear pivoted at an extending end of the driving cylinder, a fixed rack fixedly connected with the support and a movable rack fixedly connected with the sliding table; the fixed rack and the moving rack are disposed on both sides of the gear in the sliding displacement direction, and are configured to: when the gear and the extending end of the driving cylinder synchronously move, the gear is meshed with the fixed rack and the movable rack respectively, so that the sliding table is driven by the movable rack to slide and switch between two working positions. This scheme reduces the occupation space of structure in the slip displacement direction on the basis of satisfying slip table working stroke through the transmission structure of reasonable optimization slip table device, improves the life and the configuration maintenance cost of driving cylinder simultaneously.

Description

Sliding table device and production line applying same

Technical Field

The invention relates to the technical field of material conveying auxiliary tools of part production lines, in particular to a sliding table device and a production line applying the sliding table device.

Background

With the rapid development of manufacturing technology, the automation degree of product production lines in most fields is generally higher, for example, automobile parts and component production lines. In order to solve the safety risk caused by human-computer interaction, a sliding table is usually adopted at the tail end of an automatic production line as a material conveying auxiliary tool, please refer to a human-computer interaction area schematic diagram shown in fig. 1, a robot/manipulator puts a material 40 in an automatic production line area a on one sliding table 30, slides out a certain safety distance to a manual operation area B, and then an operator performs the next operation.

According to the difference of driving power, the existing sliding table is generally divided into an electric sliding table, a hydraulic sliding table and a pneumatic sliding table. The pneumatic sliding table has a simple structure and low use and maintenance costs, and is widely applicable, please refer to a schematic diagram of a typical sliding table apparatus in the prior art shown in fig. 2. During the use, cylinder 10 drives the slip table 30 of installing on slide rail 20 and removes, accomplishes the conveying of material 40 on the slip table 30. In order to avoid the effect of generating overlarge moment between the piston rod of the air cylinder and the sliding table and further influence the service life of the air cylinder, the air cylinder adopts a centered mode and an end installation mode. However, limited by the structural principle of the sliding table, the existing sliding table occupies a far larger space in the length direction, so that the sliding table moves a distance, and the purchasing and maintenance costs of the cylinder cannot be effectively controlled due to a larger sliding stroke; in addition, the operating speed of the sliding table is guaranteed by the operating speed of the cylinder piston rod, and the service life of the pneumatic component is directly influenced by the excessively high operating speed of the cylinder piston rod.

In view of the above, a new method for optimizing the structure of the sliding table device is needed to overcome the above-mentioned drawbacks.

Disclosure of Invention

In order to solve the technical problems, the invention provides a sliding table device and a production line applying the sliding table device, so that the occupied space of the structure in the sliding displacement direction is reduced on the basis of meeting the working stroke of a sliding table by reasonably optimizing the transmission structure of the sliding table device, and meanwhile, the service life of a driving cylinder is prolonged, and the configuration and maintenance cost is increased.

The invention provides a sliding table device, which comprises a sliding table, a gear, a fixed rack and a movable rack, wherein the sliding table can slide and displace relative to a support under the driving of a driving cylinder; wherein the fixed rack and the moving rack are arranged on both sides of the gear in the sliding displacement direction and configured to: when the gear and the extending end of the driving cylinder synchronously move, the gear is meshed with the fixed rack and the movable rack respectively, so that the sliding table is driven by the movable rack to slide and switch between two working positions.

Preferably, in the sliding displacement direction, the engagement teeth of the fixed rack are arranged at a first section and configured to: the gear in the retracted working position engaging the fixed rack gear at a first end of the first section; the gear in the extended operating position engages the fixed rack gear at its second end at the first section.

Preferably, in the sliding displacement direction, the meshing teeth of the moving rack are configured to: a second section arranged in the retracted working position and having a first end engaged with said gear in the retracted working position; in the extended operating position, arranged in the third section, and a second end thereof is engaged with said gear in the extended operating position; wherein the first and second and third sections each have respective overlapping engagement regions.

Preferably, the cylinder body of the driving cylinder is fixedly connected with the support, the cylinder rod of the driving cylinder forms the extending end, a gear coupling member is fixedly arranged at the end part of the cylinder rod, and the gear is pivoted with the gear coupling member.

Preferably, a gear sliding fit pair is arranged between the bottom of the gear coupling and the support.

Preferably, sliding table sliding fit pairs are respectively arranged between the two side edges of the sliding table and the support.

Preferably, the support is provided with a limiting block matched with the sliding table extending in a sliding mode so as to limit the extending working position of the sliding table.

Preferably, a buffering cylinder matched with the sliding table which is retracted in a sliding mode is arranged on the support so as to absorb sliding displacement impact of the sliding table.

Preferably, dustproof covers are respectively arranged above the gear sliding fit pair and the sliding table sliding fit pair.

The invention also provides a production line, which comprises an automatic production line with an interactive working area, wherein the interactive working area is provided with the sliding table device.

Aiming at the traditional pneumatic sliding table device, the invention adopts two groups of gear rack transmission mechanisms to simulate the working mechanism of the movable pulley in a new way, and effectively shortens the working stroke of the driving cylinder. Specifically, a gear is pivoted to a gear of the driving cylinder, the gear extends out of the working end, a fixed rack and a movable rack which are in a meshing transmission relationship with the gear are respectively arranged on two sides of the gear along a sliding displacement direction, one is fixedly connected with a support, and the other is fixedly connected with a sliding table; according to the arrangement, in the process that the driving cylinder drives the gear to linearly displace, the gear relatively rotates while synchronously displacing along with the extension end of the driving cylinder based on the meshing relation between the gear and the fixed rack, and the movable rack forms a first displacement stroke along with the linear displacement of the gear; meanwhile, under the action of the rotating gear, based on the meshing relation of the gear and the movable rack, the movable rack linearly displaces relative to the gear to form a second displacement stroke, so that the sliding table is driven to slidably displace relative to the support. Compared with the prior art, the scheme has the following beneficial technical effects:

firstly, the working stroke of the sliding table device provided by the scheme is constructed by superposing a first displacement stroke and a second displacement stroke, so that the working stroke of the sliding table can be met by adopting a driving cylinder with the first displacement stroke; that is to say, can obtain the effect of increasing the journey through above-mentioned drive mechanism, select for use the working stroke that the long stroke actuating cylinder of short stroke actuating cylinder can obtain traditional scheme obtained to reduce the structure and take up in the space that the displacement direction slided, occupy for the place that effectively reduces the production line and provide technical guarantee.

Secondly, the driving cylinder of this scheme passes through the effort of gear/rack drive mechanism output drive slip table displacement, and through the meshing buffering of rack and pinion, the effort that reducible reaction acted on the driving cylinder reduces the impact to drive element in the motion process to improve drive element's life.

Thirdly, based on the range extending function of the transmission mechanism, on one hand, on the basis of the same output speed of the driving cylinder, the displacement speed of the sliding table can be twice of the output speed of the driving cylinder, and the operation efficiency of the production line is obviously improved; in addition, for the same displacement speed of the sliding table, the output speed of the driving cylinder is only half of the displacement speed of the sliding table, so that the service life of the driving cylinder can be further prolonged.

Fourthly, based on the range extending function of the transmission mechanism, the short-stroke driving cylinder is selected to correspondingly reduce the configuration, maintenance and repair cost of the driving element.

Finally, in a preferred version of the invention, in the sliding displacement direction, the meshing teeth of the fixed rack are arranged in a first section, and correspondingly, the meshing teeth of the moving rack are configured to: the movable rack is arranged at the second section when located at the retracting working position and is arranged at the third section when located at the extending working position, namely, the movable rack is located at the second section when located at the retracting working position, and the movable rack located at the extending working position after linear displacement is located at the third section.

Drawings

FIG. 1 is a schematic diagram of a human-computer interaction area of a conventional production line;

FIG. 2 is a schematic view of a typical ramp arrangement of the prior art;

fig. 3 is a schematic view of an overall structure of the slide table apparatus according to the embodiment;

fig. 4 is a schematic view showing an assembly relationship of a transmission mechanism of the slide table apparatus shown in fig. 3;

FIG. 5 shows the relative positions of the components of the drive mechanism in the retracted operating position;

FIG. 6 shows the relative positions of the components of the drive mechanism in the extended operating position;

FIG. 7 is a partial view taken along line C of FIG. 5;

fig. 8 is a partial view taken along line D of fig. 5.

In fig. 1-2:

the automatic production line comprises an automatic production line area A, a manual operation area B, a cylinder 10, a slide rail 20, a sliding table 30 and a material 40;

in fig. 3-8:

the device comprises a support 1, a cylinder mounting seat 11, a sliding table 2, a material positioning part 21, a material taking and placing guide part 22, a cylinder 3, a gear 41, a fixed rack 42, a moving rack 43, a gear coupling part 51, an accommodating groove 511, a gear sliding block 52, a gear sliding rail 53, a gear sliding rail mounting seat 54, a sliding table sliding block 61, a sliding table guide rail 62, a limiting block 71, a buffer cylinder 72, an in-place detection sensor bracket 73, a dust cover 81, a dust cover 82, a frame mounting seat 91 and a leveling bolt assembly 92.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the present embodiment uses a cylinder as a driving element for providing a slide displacement driving force, and details of the improvement proposed for the slide apparatus. It should be understood that the specific implementation manner of the cylinder and the self-structure of the components carried by the sliding table do not substantially limit the technical solution claimed in the present application.

Please refer to fig. 3, which is a schematic view of an overall structure of the sliding table device according to the present embodiment.

The carrier 1 of the slide table device is used as a basic component configured with corresponding functions, and as shown in fig. 3, the slide table 2 can be displaced in a sliding manner relative to the carrier 1 to convey materials. The cylinder 3 providing the sliding displacement driving force of the sliding table 2 is arranged on the support 1, specifically, the cylinder body thereof is fixedly connected with the support 1 through the cylinder mounting seat 11, and the cylinder rod thereof as an extending end outputs the linear displacement driving force. Here, the sliding table 2 can position and pick and place materials through the material positioning element 21 and the material picking and placing guide 22 disposed thereon, and it should be understood that the material positioning element 21, the material picking and placing guide 22, and the structural characteristics of the parts at the station are determined, for example, but not limited to, the parts of the automobile, and the like, and those skilled in the art can design based on specific application occasions, and therefore, the description thereof is omitted.

The scheme realizes the transmission of the output driving force of the cylinder 1 by using a transmission mechanism consisting of the gear 41, the fixed rack 42 and the movable rack 43. Referring also to fig. 4, a schematic view of the assembly of the transmission is shown.

Wherein, the gear 41 is pivoted on the extending end of the cylinder 1 (driving cylinder) to keep the meshing rotational freedom degree of the gear 41; in fact, the protruding end for driving the gear 41 to linearly displace and maintain the freedom of rotation of the body is not limited to the protruding end formed by the cylinder rod shown in the figure, and in theory, such a design may be adopted: the cylinder rod is fixedly arranged, and the cylinder body outputs driving force in a relative displacement mode, so that the arrangement mode shown in the drawing has better actuating performance and working stability.

Wherein, the fixed rack 42 is used as a transition transmission part to be fixedly connected with the support 1, and the movable rack 43 is used as an output transmission part to be fixedly connected with the sliding table 2; as shown in fig. 2, the fixed rack 42 and the moving rack 43 are disposed on both sides of the gear 41 in the sliding displacement direction of the slide table 2, and specifically, when the gear 41 is displaced in synchronization with the projecting end of the cylinder 1, the gear 41 meshes with the fixed rack 42 and the moving rack 43, respectively, to slidingly switch the slide table 2 between the two working positions of its working stroke by the moving rack 43.

As the cylinder 1 drives the gear 41 to linearly displace (extend or retract), the two sets of gear-rack transmission relations are meshed simultaneously to perform transmission. Reference is also made to fig. 5 and 6, wherein fig. 5 shows the relative positions of the members in the retracted working position and fig. 6 shows the relative positions of the members in the extended working position.

The following is a brief description of the working principle of the slide table apparatus according to the present embodiment, with reference to the process of slidably displacing the slide table 2 from the retracted working position shown in fig. 5 to the extended working position shown in fig. 6.

First, the gear 41 is relatively rotated while being displaced in synchronization with the extension of the rod of the cylinder 1 based on the meshing relationship of the gear 41 and the fixed rack 42, the linear displacement of the gear 41 in this relationship is the same as the stroke of the cylinder 1, and the moving rack 43 forms the first displacement stroke L1 in accordance with the linear displacement of the gear 41.

At the same time, based on the meshing relationship between the gear 41 and the moving rack 43, the linear displacement of the moving rack 43 relative to the gear 41 by the rotating gear 41 forms a second displacement stroke L2. Therefore, the sliding table 2 is driven to slide and displace relative to the support 1 to an extending working position. Otherwise, the device retracts to the retracting working position. The working stroke of the sliding table 2 is the sum of the first displacement stroke L1 and the second displacement stroke L2.

This scheme adopts two sets of rack and pinion drive mechanism simulation movable pulley theory of operation, has the cylinder 1 with first displacement journey L1 and can make slip table 2 obtain the working stroke of first displacement journey L1 and second displacement journey L2 addition to can effectively shorten the working stroke of cylinder 1. That is to say, can obtain the effect of range extension through above-mentioned drive mechanism, select for use the working stroke that the long stroke cylinder of short stroke cylinder can obtain traditional scheme obtained, consequently, the space that occupies in the slip displacement direction can effectively be reduced to select for use the cylinder 3 of short stroke can reduce its configuration and maintenance, maintenance cost correspondingly simultaneously.

Based on the range extending function of the transmission mechanism, on one hand, on the basis of the same output speed of the cylinder 3, the displacement speed of the sliding table 2 can be twice of the output speed of the cylinder 3, and the operation efficiency of the production line can be obviously improved; furthermore, the output speed of the cylinder 3 is only half of the displacement speed of the slide table 2 for the same displacement speed of the slide table 2, whereby the service life of the cylinder 3 can be improved. In addition, the cylinder 3 outputs acting force for driving the sliding table 2 to move through the gear/rack transmission mechanism, and impact on a driving element in the movement process can be effectively reduced through meshing and buffering of the gear and the rack, so that the service life of the cylinder 3 can be further prolonged.

In order to further reduce the size of the components and the manufacturing cost, the configuration lengths of the fixed rack 42 and the movable rack 43 can be optimized correspondingly, and the respective partial arrangement can meet the requirement of the range-extending transmission without adopting the arrangement of the mode of extending along the length direction of the support 1.

As shown in fig. 4, 5, and 6, in the sliding displacement direction, the meshing teeth of the fixed rack 42 are arranged in a first section (an area where the fixed rack 42 shown in fig. 5 and 6 is located) and configured to: the gear 41 in the retracted working position engages with the fixed rack 42 at a first end thereof at the first section (right end shown in fig. 5); the gear 41 in the extended working position engages with the fixed rack 42 at its second end (left end in fig. 6) in the first section, i.e. the fixed rack 42 need not be arranged all the way along the length of the support 1.

Likewise, the moving rack 43 need not be disposed all the way along the length of the cradle 1. As shown in fig. 4, 5 and 6, the meshing teeth of the moving rack 43 are arranged in the sliding displacement direction: in the retracted working position, is arranged in the second section (in the region of the moving rack 43 shown in fig. 5) and has a first end (the left end shown in fig. 5) engaged with the gear 41 in the retracted working position; in the extended operating position, in a third section (in the region of the mobile rack 43 shown in fig. 6), and a second end (the right end shown in fig. 6) of which is engaged with the gear 41 in the extended operating position; that is, in the retracted working position, the moving rack 43 is located in the second section, and the moving rack 43, which is linearly displaced and located in the extended working position, is located in the third section, wherein the first section and the second and third sections have respective overlapping meshing regions, respectively.

It should be noted that the overlapping meshing area of the first section where the fixed rack 41 is located and the second section where the moving rack 43 is located as shown in fig. 5, and the overlapping meshing area of the first section where the fixed rack 41 is located and the third section where the moving rack 43 is located as shown in fig. 6 are both used for ensuring the functional requirement of simultaneously meshing and driving the two sets of rack and pinion mechanisms, and it should be understood that a relatively small overlapping meshing area meeting the functional requirement is an optimal solution.

Further, a gear coupling 51 may be fixedly disposed at an end portion of the rod of the cylinder 3, and the gear 41 is pivotally connected to the gear coupling 51, that is, an indirect pivotal connection with the extending end of the rod is achieved through the gear coupling 51. As shown in the drawing, the gear coupling 51 has a receiving groove 511 in the middle thereof, and the opening of the receiving groove 511 is located on the front side of the gear coupling 51, i.e., the side away from the cylinder 3, to facilitate the assembly of the gear 31.

On this basis, a gear sliding fit pair between the end of the gear 41 and the carrier 1 can also be constructed on the basis of the gear coupling 51 to construct a support and guide for the gear end. Here, it is preferable to adopt a structure of adapting the gear slider 52 and the gear slide rail 53, please refer to fig. 7, which is a partial schematic view seen from direction C of fig. 5.

The gear coupling 51 is fixedly connected with the gear slider 52, and the detachable fixed connection between the two can be realized through bolts. Accordingly, the gear slide rail 53 can be directly fixed on the support 1, and the gear slide rail 53 can be installed through the gear slide rail installation seat 54 fixed on the support 1 as shown in the figure, as long as the gear 41 pushed by the cylinder 3 can be ensured to be stably displaced along the gear slide rail 53, which is within the protection scope of the present application.

In addition, the sliding fit pairs are respectively arranged between the two side edges of the sliding table 2 and the support 1, so that the sliding table 2 can slide and move stably. Preferably, a structure of adapting the sliding table sliding block 61 and the sliding table guiding rail 62 is adopted, please refer to fig. 8 together, which is a partial schematic view seen from direction D of fig. 5, and the sliding table sliding fit pair constructed by taking the side sliding table edge as an example is explained in detail.

Wherein, every side slip table 2 border interval sets up two slip table sliders 61, as shown in fig. 4 to can adopt the bolt to form the detachable connection between slip table 2 and the slip table slider 61, correspondingly, slip table guide rail 62 is fixed to be set up on support 1. Therefore, the material positioning part 21 and the material taking and placing guide part 22 on the sliding table 2 are driven by the movable rack 43 to slide and displace along the sliding table guide rail 62, so that the purpose of conveying materials is achieved.

In addition, the sliding displacement switching of the sliding table 2 can be provided with a corresponding limiting buffer design. As shown in fig. 3 and 4, the support 1 is provided with a limit block 71 adapted to the sliding table 2 which is extended in a sliding manner, so as to limit the extended working position of the sliding table 2; specifically, the stoppers 71 are provided as two symmetrically arranged with respect to the mount 1 to balance the force to avoid the unbalance loading.

As further shown in fig. 3, the support 1 is further provided with two cushion cylinders 72 adapted to the sliding table 2 retracted in a sliding manner to absorb sliding displacement impact of the sliding table 2, and similarly, the two cushion cylinders 72 are also symmetrically arranged relative to the support 1, so that impact of collision of the sliding table 2 in place is reduced, and the service life is prolonged. Meanwhile, the in-place detection sensor support 73 can be arranged on the support 1 to collect the in-place signal of the sliding table 2 and output the command for controlling the action of the cylinder 3, so that the occurrence of large collision impact is avoided, and the service life of the sliding table 2 is further prolonged. The specific structures of the limiting block 71 and the buffer cylinder 72 are not the core invention point of the present application, and those skilled in the art can implement the specific structures by using the prior art, so that the detailed description is omitted herein.

In order to avoid sliding and clamping stagnation caused by dust in the production and use processes, a dust cover can be additionally arranged. As shown in fig. 3, a dust cover 81 is provided above the gear sliding fit pair, specifically, the dust cover 81 can be fixedly provided at the bottom of the sliding table 2 and cover the gear sliding rail 53; the dust covers 82 are arranged above the sliding fit pair, the dust covers 82 on the two sides are respectively and fixedly arranged on the support 1, and certainly, the inner side walls of the two dust covers 82 facing the sliding table 2 reserve a displacement space of the sliding table sliding block 61.

In addition to the aforementioned sliding table device, this embodiment further provides a production line, which includes an automatic production line with an interactive work area, where the sliding table device is arranged in the interactive work area to convey materials to realize operations such as human-computer interaction. It is understood that the specific implementation manner of the automatic production line is not the core invention point of the present application, and therefore, the detailed description thereof is omitted.

Here, the support 1 can be configured with a multipoint support in order to adjust the working height of the slide 2. As shown in fig. 1, each supporting point of the support 1 is configured with a frame mounting seat 91, and the frame mounting seat 91 is correspondingly provided with a leveling bolt assembly 92 so as to facilitate height adjustment of the sliding table 2 during assembly, and establish a good matching relationship with an automatic production line on the basis of ensuring the stability of the sliding table in operation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. A sliding table device comprises a sliding table which can be driven by a driving cylinder to slide and displace relative to a support, and is characterized by further comprising:

a gear pivotally connected to an extending end of the driving cylinder;

the fixed rack is fixedly connected with the support;

the movable rack is fixedly connected with the sliding table;

wherein the fixed rack and the moving rack are arranged on both sides of the gear in the sliding displacement direction and configured to: when the gear and the extending end of the driving cylinder synchronously move, the gear is meshed with the fixed rack and the movable rack respectively, so that the sliding table is driven by the movable rack to slide and switch between two working positions.

2. The slide table apparatus according to claim 1, wherein, in the sliding displacement direction, the meshing teeth of the fixed rack are arranged in a first section and configured to: the gear in the retracted working position engaging the fixed rack gear at a first end of the first section; the gear in the extended operating position engages the fixed rack gear at its second end at the first section.

3. The slide table apparatus according to claim 2, wherein, in the sliding displacement direction, the engaging teeth of the moving rack are configured to: a second section arranged in the retracted working position and having a first end engaged with said gear in the retracted working position; in the extended operating position, arranged in the third section, and a second end thereof is engaged with said gear in the extended operating position; wherein the first and second and third sections each have respective overlapping engagement regions.

4. The slide table apparatus according to any one of claims 1 to 3, wherein a cylinder body of the drive cylinder is fixedly connected to the support, a cylinder rod of the drive cylinder forms the projecting end, and a gear coupling member is fixedly provided at an end portion of the cylinder rod, the gear being pivotally connected to the gear coupling member.

5. The slide table apparatus of claim 4, wherein a gear sliding fit pair is provided between the bottom of the gear coupling and the mount.

6. The slide table device according to claim 5, wherein slide table sliding-fit pairs are respectively provided between both side edges of the slide table and the support.

7. The slide table device according to claim 6, wherein a stopper adapted to the slide table which is slidably extended is provided on the support to restrict an extended operating position of the slide table.

8. The slide table apparatus according to claim 7, wherein a cushion cylinder fitted to the slide table slidably retracted is provided on the support to absorb a sliding displacement shock of the slide table.

9. The slide table apparatus according to claim 8, wherein dust covers are provided above the gear sliding fit pair and the slide table sliding fit pair, respectively.

10. A production line comprising an automated production line having an interworking area, characterized in that the interworking area is provided with a slipway arrangement according to any one of claims 1 to 9.

Images