Multilayer dovetail sliding table device

Abstract

The utility model relates to a sliding table device, in particular to a multilayer dovetail sliding table device. Comprising a base, and a first sliding table, a second sliding table and a third sliding table are sequentially stacked on the upper side wall of the base in the vertical direction. After the hand wheel is rotated to drive the rotating shaft and the gear to rotate, through meshing transmission of the upper rack, the lower rack and the gear, the first sliding table moves horizontally relative to the base, the second sliding table moves in the same direction relative to the first sliding table, and meanwhile the second sliding table drives the corresponding rotating frame to rotate through the lower positioning column. The rotating frame drives the upper positioning column and the third sliding table to generate displacement in the same direction relative to the second sliding table, the third sliding table obtains multiplied stroke distance relative to the base through superposition movement of the three sliding tables, and the sliding table device can be conveniently and rapidly assembled on the premise that the occupied space of the sliding table device is not increased. And the third sliding table can drive the mechanical equipment to horizontally move to the position farther from the base, and the use requirement of the mechanical equipment is met.

Description

Technical Field

[0001] This utility model relates to a slide table device, specifically, to a multi-layer dovetail slide table device. Background Technology

[0002] A slide table is a mechanical device that can perform precise linear displacement according to a preset program. Its core function is to convert rotary motion into high-precision linear motion. After the worker installs the mechanical equipment on the upper side wall of the slide table's movable plate, the mechanical equipment can be moved horizontally to a predetermined position through the slide table to meet the usage requirements of the mechanical equipment.

[0003] Existing dovetail slide table structures generally adopt a double-layer configuration design, which extends the stroke through the sliding movement of the upper movable plate. Due to the physical characteristics of this structure, the total stroke after sliding out is usually only about 1.5 times that of a single-layer base plate, indicating a significant bottleneck in stroke extension. For larger stroke requirements, existing solutions adopt a multi-layer vertical stacking method, which achieves vertical structural extension by stacking multiple double-layer slide table units. However, this multi-layer stacking architecture has significant drawbacks: First, the movable plates of each level of the slide table lack a linkage control system, making it impossible to achieve multi-level synchronous sliding operations, resulting in a significant reduction in system operating efficiency. Second, when the top slide table carries mechanical equipment, due to the lack of rigid cross-layer connections between the multi-layer structures, the top movable plate is in a cantilever support state. This structural design results in insufficient overall anti-overturning capacity and is prone to structural deformation under dynamic loads, seriously affecting the stability and positioning accuracy of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer dovetail slide device to solve the problems mentioned in the background art.

[0005] The total stroke of a double-layer dovetail slide structure after sliding out is usually only about 1.5 times that of a single-layer substrate, indicating a significant bottleneck in stroke expansion.

[0006] To achieve the above objectives, this utility model provides a multi-layer dovetail slide device, including a base. The upper sidewall of the base is provided with a first slide, a second slide, and a third slide stacked sequentially from bottom to top. The lower sidewalls of the first, second, and third slides are all provided with dovetail grooves. The upper sidewalls of the base, the first slide, and the second slide are respectively fixed with dovetail tenons that mate with the dovetail grooves. The dovetail tenons are slidably fitted into the corresponding dovetail grooves. An adjustment mechanism is provided on the first slide, which drives the first and second slides to move horizontally in the same direction synchronously. A linkage mechanism is provided on both sides of the first slide. When the second slide moves horizontally, the linkage mechanism drives the third slide to move in the same direction on the second slide, thereby achieving synchronous sliding between the slides and extending the total length of the device after the slides have slid out.

[0007] As a further improvement to this technical solution, the first slide is provided with a mounting groove. The adjustment mechanism includes a rotating shaft that is horizontally rotatable inside the mounting groove. A gear is coaxially fixed on the rotating shaft via a spline. An upper rack and a lower rack are respectively meshed on the upper and lower sides of the gear. The upper rack is fixedly installed on the lower side wall of the second slide, and the lower rack is fixedly installed on the upper side wall of the base. Through the superimposed movement of the two first slides and the second slide, the second slide gains a doubled travel distance relative to the base.

[0008] As a further improvement to this technical solution, the linkage mechanism includes a rotating frame rotatably disposed on one side of the first slide. A lower positioning column and an upper positioning column are slidably disposed inside the rotating frame. The lower positioning column is fixedly disposed on one side of the second slide, and the upper positioning column is fixedly disposed on one side of the third slide. Through the superimposed movement of the three slides, the third slide can obtain a larger travel distance relative to the base.

[0009] As a further improvement to this technical solution, one end of the rotating shaft extends through and through to one side of the first slide table and is coaxially fixed with a handwheel. The handwheel is provided with a locking mechanism, which includes a pin horizontally disposed between the handwheel and the first slide table. A convex ring is coaxially fixed on the pin, and a spring sleeved on the pin is fixed between the convex ring and the handwheel. The spring pushes the convex ring away from the handwheel, and the pin can be driven to move axially through the elastic deformation of the spring.

[0010] As a further improvement to this technical solution, the locking mechanism also includes a retaining sleeve fixedly disposed on the side of the handwheel away from the first slide. The retaining sleeve has a storage groove on the side away from the handwheel. The end of the pin away from the first slide slides through the handwheel and the retaining sleeve in sequence and is provided with a rotating plate. The spring rebound can be restricted by the cooperation of the rotating plate and the retaining sleeve.

[0011] As a further improvement to this technical solution, a sleeve plate is fixed on one side of the first slide table and rotatably sleeved on the rotating shaft. Several slots are arranged in a circular array around the axis of the rotating shaft. When the end of the pin is inserted into the inside of one of the slots, the rotating plate is inserted into the inside of the storage slot. By rotating the rotating plate to the position corresponding to the storage slot, the restriction of the spring return by the rotating plate and the sleeve can be released.

[0012] As a further improvement to this technical solution, two L-shaped support frames are symmetrically fixedly connected to one side of the third slide table. Movable grooves are provided on the base at positions corresponding to the two support frames. The horizontal sections of the support frames are slidably disposed inside the corresponding movable grooves. The support of the support frames enhances the anti-overturning ability and overall rigidity of the third slide table when bearing mechanical equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This multi-layer dovetail slide device, after the handwheel is turned to drive the rotating shaft and gear to rotate, through the meshing transmission of the upper rack, lower rack and gear, causes the first slide to move horizontally relative to the base, and the second slide to move in the same direction relative to the first slide. At the same time, the second slide drives the corresponding rotating frame to rotate through the lower positioning column, so that the rotating frame drives the upper positioning column and the third slide to move in the same direction relative to the second slide. Through the superimposed movement of the three slides, the third slide achieves a multiplied travel distance relative to the base. Without increasing the space occupied by the slide device, the third slide can drive the mechanical equipment to move horizontally to a position farther from the base, thus meeting the usage requirements of the mechanical equipment.

[0015] 2. In this multi-layer dovetail slide device, after the rotating ring drives the rotating plate to the position corresponding to the storage slot, the rebound spring drives the convex ring to approach the sleeve plate. The convex ring drives the pin and the rotating plate to move synchronously. When the end of the pin is inserted into the inside of one of the slots, the rotating plate is inserted into the inside of the storage slot. At this time, the pin and the slot cooperate to prevent the handwheel from rotating, thereby fixing the position of the third slide and the mechanical equipment and ensuring the stable use of the mechanical equipment.

[0016] 3. In this multi-layer dovetail slide device, when the third slide moves horizontally relative to the base, the third slide drives the two support frames to move synchronously. The horizontal section of the support frame moves in the corresponding movable groove. During this process, the sliding pair formed by the horizontal section of the support frame and the movable groove not only provides axial guidance for the third slide, but also forms a stable support structure through the constraint relationship of surface contact, effectively enhancing the anti-overturning ability and overall rigidity of the third slide when bearing mechanical equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is an exploded view of the present invention;

[0020] Figure 4 This is a partial structural schematic diagram of the present invention;

[0021] Figure 5 This is one of the structural schematic diagrams of the handwheel and locking mechanism of this utility model;

[0022] Figure 6 This is the second schematic diagram of the handwheel and locking mechanism of this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Base; 11. Lower rack; 12. Movable slot;

[0025] 2. First slide; 21. Rotating frame; 22. Mounting slot;

[0026] 3. Second slide; 31. Lower positioning pin; 32. Upper rack;

[0027] 4. Third slide; 41. Upper positioning post;

[0028] 5. Support frame;

[0029] 6. Shaft; 61. Gear; 62. Handwheel;

[0030] 7. Locking mechanism; 71. Pin; 72. Protruding ring; 73. Spring; 74. Sleeve; 741. Storage slot; 75. Rotating plate; 76. Sleeve plate; 761. Slot;

[0031] 8. Dovetail groove; 9. Dovetail tenon. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] Please see Figure 1 and Figure 3As shown, one of the objectives of this embodiment is to provide a multi-layer dovetail slide device, including a base 1, which is mounted on a workbench. The upper sidewall of the base 1 is provided with a first slide 2, a second slide 3, and a third slide 4 stacked sequentially from bottom to top. The lower sidewalls of the first slide 2, second slide 3, and third slide 4 are all provided with dovetail grooves 8. The upper sidewalls of the base 1, the first slide 2, and the second slide 3 are respectively fixed with dovetail tenons 9 that mate with the dovetail grooves 8. The dovetail tenons 9 are slidably fitted inside the corresponding dovetail grooves 8. The first slide 2, second slide 3, and third slide 4 can only move along the axial direction of the dovetail tenons 9. This device is used to load mechanical equipment. At this time, the mechanical equipment is fixedly installed on the upper side wall of the third slide 4. An adjustment mechanism is provided on the first slide 2. The adjustment mechanism is used to drive the first slide 2 and the second slide 3 to move horizontally in the same direction synchronously. Both sides of the first slide 2 are provided with linkage mechanisms. When the second slide 3 moves horizontally, the linkage mechanism drives the third slide 4 to move in the same direction as the second slide 3. By superimposing the displacement of the third slide 4 with the displacement of the first slide 2 and the second slide 3, the stroke of the third slide 4 is increased, so that the third slide 4 can drive the mechanical equipment to move horizontally to a position further away from the base 1, which meets the application of the mechanical equipment in a limited space.

[0035] An installation groove 22 is provided on the first slide 2. The structure of the adjustment mechanism is described in detail below, with reference to... Figure 2 The adjustment mechanism includes a horizontally rotatable shaft 6 installed inside the mounting groove 22. A gear 61 is coaxially fixed to the shaft 6 via a spline. An upper rack 32 and a lower rack 11 are respectively meshed on the upper and lower sides of the gear 61. The directions of the upper rack 32 and the lower rack 11 are the same as the directions of the dovetail tenon 9 and the dovetail groove 8. (Refer to...) Figure 4 The upper rack 32 is fixedly mounted on the lower side wall of the second slide 3, and the lower rack 11 is fixedly mounted on the upper side wall of the base 1. One end of the rotating shaft 6 extends through and through to one side of the first slide 2 and is coaxially fixed with a handwheel 62. When the worker rotates the handwheel 62, causing the handwheel 62 to drive the rotating shaft 6 and the gear 61 to rotate, the gear 61 and the lower rack 11 mesh, causing the gear 61 to roll on the lower rack 11. The rolling gear 61 drives the rotating shaft 6 and the first slide 2 to move synchronously, causing the first slide 2 to move axially to one side on the base 1. At the same time, the gear 61 and the upper rack 32 mesh, causing the upper rack 32 to move horizontally above the gear 61. The moving upper rack 32 drives the second slide 3 to move synchronously, causing the second slide 3 to move in the same direction on the first slide 2. This dual transmission mechanism, through the superimposed movement of the two slides, allows the second slide 3 to obtain a doubled travel distance relative to the base 1.

[0036] The following details the structure of the linkage mechanism, referring to... Figure 1The linkage mechanism includes a rotating frame 21 rotatably mounted on one side of the first slide 2. A lower positioning post 31 and an upper positioning post 41 are slidably mounted inside the rotating frame 21. The upper positioning post 41 is located above the lower positioning post 31. The lower positioning post 31 is fixedly mounted on one side of the second slide 3, and the upper positioning post 41 is fixedly mounted on one side of the third slide 4. When the second slide 3 moves relative to the first slide 2, the second slide 3 drives the two lower positioning posts 31 to move synchronously. The moving lower positioning posts 31 push the side wall of the rotating frame 21, causing the rotating frame 21 to rotate around the connection point with the first slide 2. The rotating frame 21 and the lower positioning post 31 slide relative to each other. Simultaneously, the rotating frame 21 pushes the upper positioning post 41 through its side wall, causing the upper positioning post 41 to drive the third slide 4 forward. The upper positioning column 41 moves horizontally because the distance between the upper positioning column 41 and the hinge axis of the rotating frame 21 (i.e., the connection between the rotating frame 21 and the first slide 2) is larger, while the distance between the lower positioning column 31 and the same hinge axis is relatively smaller. Therefore, the angular displacement of the upper positioning column 41 is greater than that of the lower positioning column 31, and the horizontal movement of the upper positioning column 41 is greater than that of the lower positioning column 31. The upper positioning column 41 pushes the third slide 4, which will be greater than the lower positioning column 31 pushes the second slide 3. At this time, the third slide 4 will produce the same displacement on the second slide 3. This triple transmission mechanism, through the superimposed movement of the three slides, enables the third slide 4 to obtain a larger travel distance relative to the base 1, so that the third slide 4 can drive the mechanical equipment to a position farther away from the base 1, thus meeting the usage requirements of the mechanical equipment.

[0037] To improve the stability of the movement of the third slide table 4, two L-shaped support frames 5 are symmetrically fixedly connected to one side of the third slide table 4, and movable slots 12 are provided on the base 1 at positions corresponding to the two support frames 5. The horizontal sections of the support frames 5 are slidably disposed inside the corresponding movable slots 12. When the third slide table 4 moves horizontally relative to the base 1, the third slide table 4 drives the two support frames 5 to move synchronously. The horizontal sections of the support frames 5 move accordingly in the corresponding movable slots 12. During this process, the sliding pair formed by the horizontal sections of the support frames 5 and the movable slots 12 not only provides axial guidance for the third slide table 4, but also forms a stable support structure through the constraint relationship of surface contact, effectively enhancing the anti-overturning ability and overall rigidity of the third slide table 4 when bearing mechanical equipment.

[0038] After the third slide 4 moves the mechanical equipment to the predetermined position, a locking mechanism 7 is provided on the handwheel 62 to fix the position of the mechanical equipment. (Refer to...) Figure 5 and Figure 6The locking mechanism 7 includes a pin 71 horizontally disposed between the handwheel 62 and the first slide 2. A convex ring 72 is coaxially fixed on the pin 71. A spring 73 is fixed between the convex ring 72 and the handwheel 62 and sleeved on the pin 71. The spring 73 pushes the convex ring 72 away from the handwheel 62. The locking mechanism 7 also includes a retaining sleeve 74 fixedly disposed on the side of the handwheel 62 away from the first slide 2. A storage groove 741 is provided on the side of the retaining sleeve 74 away from the handwheel 62. A rotating plate 75 is provided at the end of the pin 71 away from the first slide 2, which slides through the handwheel 62 and the retaining sleeve 74 and rotates. A pull ring is fixedly disposed on the other side of the rotating plate 75. At the same time, a sleeve plate 76 is fixedly fixed on the side of the first slide 2 and rotatedly sleeved on the rotating shaft 6. Several slots 761 are arranged in a circular array around the rotating shaft 6 on the sleeve plate 76.

[0039] When the worker turns handwheel 62 to rotate shaft 6, spring 73 is in an elastically contracted state. Rotating plate 75 and storage slot 741 are misaligned, and rotating plate 75 contacts the side of sleeve 74 away from spring 73. Sleeve 74 prevents rotating plate 75 from approaching sleeve plate 76 under the spring's rebound, keeping pin 71 in the same position. The worker can freely turn handwheel 62 to adjust the position of third slide 4. After the worker rotates shaft 6 to move third slide 4 to the predetermined position, the worker turns pull ring to rotate rotating plate 75 to the desired position. The position corresponding to the storage slot 741 prevents the sleeve 74 from blocking the movement of the rotating plate 75 along the axis of the pin 71. The rebounding spring 73 drives the convex ring 72 to approach the sleeve plate 76. The convex ring 72 drives the pin 71 and the rotating plate 75 to move synchronously. When the end of the pin 71 is inserted into the interior of one of the slots 761, the rotating plate 75 is inserted into the interior of the storage slot 741. At this time, the pin 71 and the slot 761 cooperate to prevent the handwheel 62 from rotating, thereby fixing the position of the third slide 4 and the mechanical equipment and ensuring the stable use of the mechanical equipment.

[0040] When this device is in use, the worker turns the handwheel 62 to drive the rotating shaft 6 and gear 61 to rotate. Through the meshing transmission of the upper rack 32, lower rack 11 and gear 61, the first slide 2 moves horizontally relative to the base 1. The second slide 3 moves in the same direction relative to the first slide 2. At the same time, the second slide 3 drives the corresponding rotating frame 21 to rotate through the lower positioning column 31. The rotating frame 21 drives the upper positioning column 41 and the third slide 4 to move in the same direction relative to the second slide 3. The adjustment mechanism and the linkage mechanism constitute a triple transmission mechanism. This triple transmission mechanism, through the superimposed movement of the three slides, allows the third slide 4 to obtain a larger travel distance relative to the base 1, enabling the third slide 4 to drive the mechanical equipment to move horizontally to a position farther from the base 1, thus meeting the usage requirements of the mechanical equipment.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-layer dovetail slide device comprising a base (1), characterized in that: The upper sidewall of the base (1) is provided with a first slide (2), a second slide (3) and a third slide (4) stacked sequentially from bottom to top. The lower sidewalls of the first slide (2), the second slide (3) and the third slide (4) are all provided with dovetail grooves (8). The upper sidewalls of the base (1), the first slide (2) and the second slide (3) are respectively fixed with dovetail tenons (9) that cooperate with the dovetail grooves (8). The dovetail tenons (9) are slidably assembled inside the corresponding dovetail grooves (8). An adjustment mechanism is provided on the first slide (2). The adjustment mechanism is used to drive the first slide (2) and the second slide (3) to move horizontally in the same direction synchronously. Both sides of the first slide (2) are provided with linkage mechanisms. When the second slide (3) moves horizontally, the linkage mechanism drives the third slide (4) to move in the same direction on the second slide (3).

2. The multi-layer dovetail glide device of claim 1, wherein: The first slide (2) has an installation groove (22). The adjustment mechanism includes a rotating shaft (6) that is horizontally rotatably disposed inside the installation groove (22). A gear (61) is coaxially fixed on the rotating shaft (6) via a spline. An upper rack (32) and a lower rack (11) are respectively meshed on the upper and lower sides of the gear (61). The upper rack (32) is fixedly disposed on the lower side wall of the second slide (3), and the lower rack (11) is fixedly disposed on the upper side wall of the base (1).

3. The multi-layer dovetail glide device of claim 1, wherein: The linkage mechanism includes a rotating frame (21) rotatably disposed on one side of the first slide (2). The rotating frame (21) has a lower positioning post (31) and an upper positioning post (41) slidably disposed inside. The lower positioning post (31) is fixedly disposed on one side of the second slide (3), and the upper positioning post (41) is fixedly disposed on one side of the third slide (4).

4. The multi-layer dovetail glide device of claim 2, wherein: One end of the rotating shaft (6) extends through and through to one side of the first slide (2) and is coaxially fixed with a handwheel (62). A locking mechanism (7) is provided on the handwheel (62). The locking mechanism (7) includes a pin (71) horizontally disposed between the handwheel (62) and the first slide (2). A convex ring (72) is coaxially fixed on the pin (71). A spring (73) sleeved on the pin (71) is fixed between the convex ring (72) and the handwheel (62). The spring (73) pushes the convex ring (72) away from the handwheel (62).

5. The multi-layer dovetail glide device of claim 4, wherein: The locking mechanism (7) further includes a retainer (74) fixedly disposed on the side of the handwheel (62) away from the first slide (2). The retainer (74) is provided with a storage groove (741) on the side away from the handwheel (62). The end of the pin (71) away from the first slide (2) slides through the handwheel (62) and the retainer (74) in sequence and is provided with a rotating plate (75).

6. The multi-layer dovetail glide device of claim 5, wherein: The first slide (2) has a sleeve plate (76) fixed on one side, which is rotatably sleeved on the rotating shaft (6). The sleeve plate (76) has several slots (761) arranged in a ring around the axis of the rotating shaft (6). When the end of the pin (71) is inserted into the interior of one of the slots (761), the rotating plate (75) is inserted into the interior of the storage slot (741).

7. The multi-layer dovetail glide device of claim 1, wherein: One side of the third sliding table (4) is symmetrically and fixedly connected with two L-shaped support frames (5), the base (1) is provided with a movable slot (12) at a position corresponding to the two support frames (5), and the horizontal section of the support frame (5) is slidably arranged in the corresponding movable slot (12).

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