Track limiting device

Abstract

The utility model relates to the technical field of machinery, in particular to a track limiting device which comprises a platform, supporting bodies are arranged on the two sides below the platform, sliding rails are installed on the tops of the supporting bodies, moving blocks are fixed to the bottom of the platform and matched with the sliding rails in a sliding mode, and check blocks are installed at the two ends of the tops of the supporting bodies. A limiting switch is installed on the side face, close to the check block, of the supporting body, a driving assembly is installed under the platform and drives the platform to do horizontal reciprocating motion, and an object is placed on the top of the platform. In the track limiting device, the photoelectric switch is adopted as the limiting switch, so that the limiting precision is remarkably improved, and the accurate control on the motion position of the platform is realized. The photoelectric switch is high in response speed and short in signal transmission time, the limiting action can be triggered in time before the platform reaches the limiting position, the situation that the platform exceeds the preset range due to the inertia effect is effectively reduced, and therefore potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a track limiting device. Background Art

[0002] In the field of mechanical technology, track limiters are widely used in various automated equipment and production lines to ensure that platforms or objects reciprocate within a preset track range. Traditional track limiters typically use mechanical limiters, such as physical blocks or mechanical triggers, to restrict the platform's range of motion. However, these mechanical limiters have several issues, such as low limit accuracy, long signal transmission times, and a lack of effective protective devices.

[0003] Specifically, mechanical limit devices often rely on direct contact between the slider and the limit block to trigger the limit action. This results in the limit accuracy being limited by the machining accuracy and assembly accuracy, making it difficult to achieve high-precision limit control. At the same time, due to the long signal transmission time, when the platform moves to the limit position, it may exceed the preset range due to inertia, posing a safety hazard. In addition, traditional track limit devices often lack effective protective devices at the end of the slide rail. If the platform loses control for some reason, it may directly impact the end of the slide rail, causing equipment damage or casualties. Utility Model Content

[0004] The purpose of the present invention is to provide a track limit device to solve some problems of the mechanical limit device proposed in the above background technology, such as low limit accuracy, long signal transmission time and lack of effective protective devices.

[0005] To achieve the above-mentioned purpose, the utility model provides a track limit device, including a platform, support bodies are provided on both sides below the platform, a slide rail is installed on the top of the support body, a moving block is fixed to the bottom of the platform, the moving block slides with the slide rail, stop blocks are installed at both ends of the top of the support body, and a limit switch is installed on the side of the support body close to the stop block. A drive assembly is installed directly below the platform, and the drive assembly drives the platform to perform horizontal reciprocating motion, and an object is placed on the top of the platform.

[0006] Preferably, the limit switch is a photoelectric switch.

[0007] Preferably, the distance between the limit switch and the stopper is one fifth to one quarter of the length of the slide rail.

[0008] Preferably, the slide rail is a cylindrical structure, and both ends of the slide rail are fixedly connected to the stop blocks.

[0009] Preferably, a slot is provided at the bottom of the moving block, and the slot is adapted to the shape of the slide rail.

[0010] Preferably, the driving assembly includes a housing, a screw rod is horizontally installed inside the housing, a screw rod slider is installed on the screw rod, and one end of the screw rod is driven to rotate by a screw rod motor.

[0011] Preferably, a strip-shaped opening is provided on the top of the housing, a connecting block is installed on the top of the screw slider, the connecting block is slidably matched with the strip-shaped opening, and the top of the connecting block is welded and fixed to the platform.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The track limit device of the present invention significantly improves limit accuracy by using a photoelectric switch as the limit switch, achieving precise control of the platform's motion position. The photoelectric switch has a fast response speed and short signal transmission time, enabling timely triggering of the limit action before the platform reaches the limit position. This effectively reduces the possibility of exceeding the preset range due to inertia, thereby eliminating safety hazards.

[0014] The utility model also incorporates a stopper at the end of the slide rail as a protective device. Even if the platform loses control for some reason, the stopper absorbs the remaining energy, preventing direct impact with the end of the slide rail, effectively protecting equipment and personnel. Furthermore, the appropriate distance between the stopper and the photoelectric switch ensures position limiting accuracy while providing sufficient braking distance for the platform, making the entire position limiting process smoother and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the moving block in the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the drive assembly in the present utility model;

[0018] The meaning of each number in the figure is:

[0019] 1. Platform; 2. Support body; 3. Slide rail; 4. Moving block; 41. Slot; 5. Limit switch; 6. Stop block; 7. Drive assembly; 71. Housing; 72. Screw; 73. Screw motor; 74. Screw slider; 75. Connecting block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides a track limiting device, such as Figure 1-Figure 3 As shown, it includes a platform 1, with support bodies 2 provided on both sides below the platform 1, a slide rail 3 installed on the top of the support body 2, a moving block 4 fixed to the bottom of the platform 1, the moving block 4 slidingly cooperates with the slide rail 3, and blocks 6 are installed at both ends of the top of the support body 2. A limit switch 5 is installed on the side of the support body 2 near the block 6. A drive assembly 7 is installed directly below the platform 1, and the drive assembly 7 drives the platform 1 to perform horizontal reciprocating motion, and an object is placed on the top of the platform 1. The device utilizes the sliding cooperation between the moving block 4 and the slide rail 3 to ensure that the platform 1 can move smoothly and accurately along the predetermined track on the support body 2. At the same time, the blocks 6 installed at both ends of the top of the support body 2 effectively prevent the platform 1 from exceeding the range of motion due to unexpected circumstances, greatly enhancing the safety of the device. The limit switch 5 is connected to the screw motor 73 of the drive assembly 7 through a wire.

[0022] More crucially, the present invention incorporates a limit switch 5 on the side near the stop 6. This design allows the limit switch 5 to be triggered promptly when the platform 1 approaches its limit of motion, rapidly controlling the drive assembly 7 via an electrical signal to stop or reverse the platform 1, thereby achieving precise control of the platform 1's position. This limit system not only improves position accuracy but also significantly shortens signal transmission time, effectively avoiding platform overtravel caused by inertia.

[0023] In this embodiment, the limit switch 5 is a photoelectric switch. This significantly improves the limit accuracy and response speed. The photoelectric switch detects the position of the platform 1 in a non-contact manner, is not affected by mechanical wear and contact errors, and ensures the accuracy and reliability of the limit action.

[0024] Specifically, the distance between the limit switch 5 and the stopper 6 is one-fifth to one-quarter the length of the slide rail 3. This ensures that the platform 1 has sufficient braking distance to avoid overtravel and that the limit switch 5 is triggered in time before the platform 1 approaches the stopper 6, thereby achieving precise control of the movement position of the platform 1.

[0025] Furthermore, the slide rail 3 is cylindrical in structure, with both ends of the slide rail 3 fixedly connected to the stopper 6. The cylindrical structure of the slide rail 3 provides excellent guidance and stability, ensuring the smooth sliding of the platform 1. Furthermore, the fixed connection between the ends of the slide rail 3 and the stopper 6 enhances the structural strength of the entire device, improving safety and reliability.

[0026] Furthermore, a slot 41 is provided at the bottom of the moving block 4, which matches the shape of the slide rail 3. This ensures that the moving block 4 slides stably on the slide rail 3, prevents the platform 1 from deflecting or shaking due to unstable sliding, and further improves the stability and accuracy of the device.

[0027] Furthermore, the drive assembly 7 includes a housing 71, within which a screw rod 72 is horizontally mounted. A screw slider 74 is mounted on the screw rod 72. One end of the screw rod 72 is driven for rotation by a screw motor 73. This screw drive mechanism provides smooth, high-precision, and low-noise horizontal reciprocating motion for the platform 1. Precise control of the screw motor 73 ensures the accuracy and repeatability of the platform 1's motion.

[0028] Furthermore, a strip-shaped opening is formed at the top of housing 71, and a connecting block 75 is mounted on the top of screw slider 74. Connecting block 75 slidably engages with the strip-shaped opening, and the top of connecting block 75 is welded to platform 1. This ensures the stability and guidance of platform 1 during horizontal reciprocating motion. Furthermore, the welding of connecting block 75 to platform 1 enhances the structural strength and stability of the entire device.

[0029] When the track limiting device of the present invention is in use, the platform 1 first achieves sliding cooperation with the slide rail 3 on the top of the support body 2 through the moving block 4 at the bottom, so that the platform 1 can move smoothly and accurately along the predetermined track under the guidance of the slide rail 3.

[0030] During platform 1's movement, when platform 1 approaches the stops 6 at either end of support 2, limit switches 5, mounted on support 2 near the sides of stops 6, activate. In this embodiment, limit switches 5 are photoelectric switches that detect the position of platform 1 in real time through a non-contact method. Once platform 1 enters the photoelectric switch's detection range, it triggers and sends an electrical signal via wires to the lead screw motor 73 of drive assembly 7.

[0031] Upon receiving the signal, the lead screw motor 73 responds quickly, controlling the rotation of the lead screw 72, thereby driving the lead screw slider 74, the connecting block 75 connected to it, and the platform 1 to stop or reverse its motion. During this process, the high precision and fast response of the photoelectric switch, as well as the smoothness and accuracy of the lead screw transmission method, ensure that the platform 1 can stop or reverse its motion promptly and accurately before approaching the stop block 6, effectively avoiding the problem of platform overtravel caused by inertia.

[0032] At the same time, the cylindrical structure of the slide rail 3, the design of the retaining groove 41 at the bottom of the moving block 4, and the welding fixation of the connecting block 75 to the platform 1 and the sliding fit with the strip opening further enhance the stability and precision of the entire device, enabling the platform 1 to maintain a stable and precise movement during horizontal reciprocating motion.

[0033] Finally, it should be noted that the electronic components in the screw motor 73 and other parts in this embodiment are all universal standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected respectively through wires. The specific connection means should refer to the working sequence between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in the art.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A track limiting device, comprising a platform (1), characterized in that: Support bodies (2) are provided on both sides below the platform (1), a slide rail (3) is installed on the top of the support body (2), a moving block (4) is fixed on the bottom of the platform (1), the moving block (4) and the slide rail (3) are slidably matched, blocks (6) are installed at both ends of the top of the support body (2), and a limit switch (5) is installed on the side of the support body (2) close to the block (6), a driving component (7) is installed directly below the platform (1), and the driving component (7) drives the platform (1) to perform horizontal reciprocating motion, and an object is placed on the top of the platform (1).

2. The track limiting device according to claim 1, characterized in that: The limit switch (5) is a photoelectric switch.

3. The track limiting device according to claim 2, characterized in that: The distance between the limit switch (5) and the stopper (6) is one fifth to one quarter of the length of the slide rail (3).

4. The track limiting device according to claim 1, characterized in that: The slide rail (3) is a cylindrical structure, and both ends of the slide rail (3) are fixedly connected to the stopper (6).

5. The track limiting device according to claim 4, characterized in that: A slot (41) is provided at the bottom of the moving block (4), and the slot (41) is adapted to the shape of the slide rail (3).

6. The track limiting device according to claim 1, characterized in that: The driving assembly (7) comprises a housing (71), a screw rod (72) is horizontally mounted inside the housing (71), a screw rod slider (74) is mounted on the screw rod (72), and one end of the screw rod (72) is driven to rotate by a screw motor (73).

7. The track limiting device according to claim 6, characterized in that: A strip-shaped opening is provided on the top of the housing (71), and a connecting block (75) is installed on the top of the screw slider (74). The connecting block (75) is slidably engaged with the strip-shaped opening, and the top of the connecting block (75) is welded and fixed to the platform (1).

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