High-precision jig with positioning structure

Abstract

The utility model relates to the technical field of jigs, and discloses a high-precision jig with a positioning structure, which comprises a fixed seat, a cavity is arranged in the fixed seat, the positioning structure is arranged in the cavity and comprises a driving motor, a driving gear and a driven gear, an output shaft of the driving motor is connected with the driving gear, and an output shaft of the driven gear is connected with the driving gear. The driving gear is meshed with the driven gear, the driven gear is rotationally installed in the cavity, a plurality of pairs of arc-shaped grooves are formed in the driven gear, guide rods are arranged in the arc-shaped grooves, a groove is formed in the top end of the fixing base, a channel is formed between the groove and the cavity, a positioning plate is arranged in the channel, and the positioning plate is arranged in the channel. Connecting columns are arranged at the lower ends of the inner sides of the positioning plates, and the ends, away from the positioning plates, of the connecting columns are fixedly connected with the guide rods. According to the utility model, the positioning structure is arranged in the jig, so that the product is prevented from shaking when being transferred in the jig, and the product is effectively prevented from being collided and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a high-precision jig with a positioning structure. Background Art

[0002] In many automated equipment, if the product is relatively small and delicate and has many production processes, and there is a large gap between each workstation, a turnover fixture is usually set up to place the product in a turnover fixture and position the fixture through a mechanism to ensure the consistency of each product. Most traditional turnover fixtures only have guide grooves and positioning grooves processed according to product tolerances, but since the normal product size is generally slightly smaller than the maximum tolerance size, this may cause the product to shake when transferred in the turnover fixture, causing collision damage to the product. Utility Model Content

[0003] The purpose of the utility model is to provide a high-precision fixture with a positioning structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision fixture with a positioning structure, comprising a fixed seat, a cavity is provided in the fixed seat, a positioning structure is provided in the cavity, the positioning structure comprises a driving motor, a driving gear and a driven gear, the output shaft of the driving motor is connected to the driving gear, the driving gear is meshed with the driven gear, the driven gear is rotatably installed in the cavity, and a plurality of pairs of arc grooves are provided on the driven gear, a guide rod is provided in the arc groove, a groove is provided at the top of the fixed seat, a channel is provided between the groove and the cavity, a positioning plate is provided in the channel, a connecting column is provided at the lower end of the inner side of the positioning plate, and the end of the connecting column away from the positioning plate is fixedly connected to the guide rod.

[0005] The following improvement is made in the solution of the present application: a rotating shaft is provided in the middle of the positioning plate, and both ends of the rotating shaft are respectively fixedly connected to the inner walls of both sides of the cavity.

[0006] The following improvement is made in the present application: the upper end of the positioning plate extends into the groove, and a rubber cushion layer is provided on the inner side of the positioning plate. By providing the rubber cushion layer on the inner side of the positioning plate, the friction damage of the positioning plate to the product can be effectively reduced.

[0007] The following improvement is made in the present application: a limiting ring is sleeved on the end of the guide rod away from the connecting column, and the outer diameter of the limiting ring is slightly larger than the width of the arc groove. The limiting ring is provided to limit the guide rod in the arc groove to prevent it from falling off.

[0008] The following improvement is made in the solution of the present application: a through hole is opened in the middle of the driving gear, and the through hole matches with the output shaft of the driving motor.

[0009] The following improvement is made in the solution of the present application: the side of the driving motor away from the driving gear is fixedly connected to the inner wall of the cavity.

[0010] Compared with the prior art, the utility model provides a high-precision fixture with a positioning structure, which has the following beneficial effects:

[0011] The utility model provides a positioning structure in the jig to prevent the product from shaking when it is transferred in the jig, thereby effectively avoiding collision damage to the product. In the initial state, the guide rod is located outside the arc groove, and the driving motor drives the active gear to rotate. The active gear rotates and meshes to drive the driven gear to rotate. The guide rod in the arc groove on the driven gear will be pushed to move to the other side along the arc groove, and the positioning plate is driven to perform an inward contraction movement through the connecting column until the positioning plate contacts and tightly contacts the product to achieve positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural diagram of the positioning structure.

[0014] In the figure: 1, fixed seat; 11, groove; 12, channel; 2, driving motor; 21, driving gear; 22, driven gear; 23, arc groove; 24, guide rod; 241, limit ring; 25, positioning plate; 251, rotating shaft; 26, connecting column; 27, rubber cushion. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention:

[0016] like Figure 1-2 As shown, a high-precision fixture with a positioning structure is mainly composed of a fixing seat 1 and a positioning structure. A cavity is provided in the fixing seat 1, and a groove 11 is opened at the top of the fixing seat 1. A channel 12 is provided between the groove 11 and the cavity, and the cavity is connected with the groove by setting the channel 12.

[0017] The positioning structure is arranged in the cavity, and includes a driving motor 2, a driving gear 21 and a driven gear 22. The output shaft of the driving motor 2 is connected to the driving gear 21, and the side of the driving motor 2 away from the driving gear 21 is fixedly connected to the inner wall of the cavity. A through hole is provided in the middle of the driving gear 21, and the through hole cooperates with the output shaft of the driving motor 2. When the driving motor 2 is started, the output shaft is driven by the driving motor 2 to rotate, and then the driving gear 21 connected thereto is driven to rotate synchronously; the driven gear 22 is rotatably installed in the cavity and meshed with the driving gear 21, and a pair of arc grooves are provided on the driven gear 22 23, a guide rod 24 is provided in the arc groove 23, a positioning plate 25 is provided in the channel 12, a connecting column 26 is provided at the inner lower end of the positioning plate 25, and the end of the connecting column 26 away from the positioning plate 25 is fixedly connected to the guide rod 24, a rotating shaft 251 is provided in the middle of the positioning plate 25, and the two ends of the rotating shaft 251 are respectively fixedly connected to the inner walls of the two sides of the cavity, the upper end of the positioning plate 25 extends into the groove 11, and a rubber cushion layer 27 is provided on the inner side of the positioning plate 25, and a limiting ring 241 is sleeved on the end of the guide rod 24 away from the connecting column 26, and the outer diameter of the limiting ring 241 is slightly larger than the width of the arc groove 23.

[0018] Working principle: In the initial state, the guide rod 24 is located on the outside of the arc groove 23, and the driving motor 2 drives the active gear 21 to rotate. The active gear 21 rotates and meshes with the driven gear 22 to rotate. The guide rod 24 in the arc groove 23 on the driven gear 22 will be pushed to move to the other side along the arc groove 23, and the positioning plate 25 will be driven to perform an inward contraction movement through the connecting column 26 until the positioning plate 25 contacts and presses against the product.

[0019] The above embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A high-precision fixture with a positioning structure, characterized in that: The invention comprises a fixed seat (1), a cavity is provided in the fixed seat (1), a positioning structure is provided in the cavity, the positioning structure comprises a driving motor (2), a driving gear (21) and a driven gear (22), the output shaft of the driving motor (2) is connected to the driving gear (21), the driving gear (21) is meshed with the driven gear (22), the driven gear (22) is rotatably mounted in the cavity, and a plurality of pairs of arc grooves (23) are provided on the driven gear (22), a guide rod (24) is provided in the arc groove (23), a groove (11) is provided at the top end of the fixed seat (1), a channel (12) is provided between the groove (11) and the cavity, a positioning plate (25) is provided in the channel (12), a connecting column (26) is provided at the inner lower end of the positioning plate (25), and the end of the connecting column (26) away from the positioning plate (25) is fixedly connected to the guide rod (24).

2. A high-precision fixture with a positioning structure according to claim 1, characterized in that: A rotating shaft (251) is provided in the middle of the positioning plate (25), and two ends of the rotating shaft (251) are respectively fixedly connected to the inner walls of both sides of the cavity.

3. A high-precision fixture with a positioning structure according to claim 2, characterized in that: The upper end of the positioning plate (25) extends into the groove (11), and a rubber cushion layer (27) is provided on the inner side of the positioning plate (25).

4. The high-precision fixture with a positioning structure according to claim 1, characterized in that: A limiting ring (241) is sleeved on one end of the guide rod (24) away from the connecting column (26), and the outer diameter of the limiting ring (241) is slightly larger than the width of the arc groove (23).

5. The high-precision fixture with a positioning structure according to claim 1, characterized in that: A through hole is provided in the middle of the driving gear (21), and the through hole matches the output shaft of the driving motor (2).

6. The high-precision fixture with a positioning structure according to claim 5, characterized in that: The side of the driving motor (2) away from the driving gear (21) is fixedly connected to the inner wall of the cavity.

Images