Locking jig

Abstract

The utility model discloses a locking jig which comprises a base, a first support and a second support are fixed to the left end and the right end of the top of the base respectively, a fixing table is fixed to the top of the first support, a first sliding rod matched with the fixing table in a left-right sliding mode is installed on the fixing table, and a handle and a first clamping plate are fixed to the left end and the right end of the first sliding rod respectively. A side plate is fixed to the front end of the first clamping plate, a long rod extending front and back is fixed to the lower end of the side plate, a first rack extending left and right is fixed to the right end of the long rod, a sleeve is fixed to the upper end of the second support, and a second sliding rod in left-right sliding fit with the sleeve is installed on the sleeve. A second clamping plate and a fixing plate are fixed to the left end and the right end of the second sliding rod respectively, the second clamping plate is located on the left side of the second support, a connecting plate is fixed to the bottom of the fixing plate, a second rack extending leftwards and rightwards is fixed to the bottom of the connecting plate, and a gear transmission mechanism is installed between the first rack and the second rack. According to the utility model, the operation steps are simplified, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a locking fixture, in particular to a manual locking fixture. Background Art

[0002] In the fields of industrial automation and precision manufacturing, locking fixtures are essential tools for securing and positioning workpieces. Their performance and ease of use are directly related to production efficiency and product quality. Locking fixtures are primarily categorized as automatic and manual, each suited to different application scenarios. Compared to automated locking fixtures, manual locking fixtures are widely used in small businesses and laboratory environments due to their simple structure and low cost.

[0003] However, the manual locking jigs in the prior art have significant limitations during operation, especially when it is necessary to achieve multi-directional clamping of the workpiece. Traditional manual locking jigs usually require the operator to manually adjust the pressure plate one by one in multiple directions to achieve a secure clamping of the workpiece. For example, when processing a workpiece that needs to be clamped from both the left and right sides at the same time, the operator first needs to manually adjust the clamping mechanism on the left to the appropriate position, and then move to the right and repeat the process of adjusting the clamping mechanism on the right. This step-by-step operation is not only inefficient, but also because it is impossible to achieve synchronous adjustment of the clamping mechanisms on both sides, it often leads to uneven clamping force, affecting the positioning and processing accuracy of the workpiece.

[0004] Furthermore, manual adjustments increase operator workload and processing time, a particularly significant issue in production environments where frequent workpiece changes or adjustments to clamping positions are required. Therefore, there is an urgent need for a manual locking fixture that overcomes the shortcomings of existing technologies, enabling simultaneous multi-directional adjustments and simplifying operation. This approach would improve production efficiency, reduce labor intensity, and ensure accurate and stable workpiece processing. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a locking fixture.

[0006] The technical solution of the utility model is: a locking fixture, comprising a base, a first bracket and a second bracket are respectively fixed at the left and right ends of the top of the base, a fixed platform is fixed on the top of the first bracket, a first sliding rod that slides left and right with the fixed platform is installed, a handle and a first splint are respectively fixed at the left and right ends of the first slide, a side plate is fixed on the front end of the first splint, a long rod extending front and back is fixed on the lower end of the side plate, a first rack extending left and right is fixed on the right end of the long rod, a sleeve is fixed at the upper end of the second bracket, a second sliding rod that slides left and right with the sleeve is installed, a second splint and a fixed plate are respectively fixed at the left and right ends of the second slide, the second splint is located on the left side of the second bracket, a connecting plate is fixed to the bottom of the fixed plate, a second rack extending left and right is fixed on the bottom of the connecting plate, and a gear transmission mechanism is installed between the first rack and the second rack.

[0007] Furthermore, the gear transmission mechanism includes a first gear, a rotating shaft and a second gear. Multiple bearings are fixed to the right side of the lower end of the second bracket. The rotating shaft extends forward and backward through the bearings. The first gear and the second gear are respectively fixed at the front and rear ends of the rotating shaft. The first gear is engaged with the first rack, and the second gear is engaged with the second rack.

[0008] Furthermore, the left end of the connecting plate is fixedly connected to the bottom of the second clamping plate.

[0009] Furthermore, a plurality of retractable first extrusion heads are installed at the right end of the first clamping plate, and a plurality of retractable second extrusion heads are installed at the left end of the second clamping plate.

[0010] Furthermore, the first clamping plate is provided with a plurality of first grooves with open right ends, and a first spring extending left and right is fixed in each first groove, and the right end of the first spring is fixed to the left end of the first extrusion head.

[0011] Furthermore, the second clamping plate is provided with a plurality of second grooves with left ends open, and a second spring extending left and right is fixed in each second groove, and the left end of the second spring is fixed to the right end of the second extrusion head.

[0012] The application of the locking fixture provided by the utility model has the beneficial effect that after holding the handle by hand and pushing the handle, the first clamping plate and the second clamping plate can move at the same time, and the first rack and the second rack are linked through the gear transmission mechanism to achieve synchronous movement of the first clamping plate and the second clamping plate. This design greatly simplifies the operating steps and improves the operating efficiency. At the same time, the synchronous adjustment ensures the consistency of the clamping force, thereby improving the positioning and processing accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view schematic diagram of the utility model;

[0014] Figure 2It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation of the first extrusion head and the second extrusion head of the utility model.

[0016] As shown in the figure: 1-base, 2-first bracket, 3-second bracket, 4-fixed platform, 5-first slide bar, 6-handle, 7-first splint, 71-first groove, 8-side plate, 9-long rod, 10-first rack, 11-sleeve, 12-second slide bar, 13-second splint, 131-second groove, 14-fixed plate, 15-connecting plate, 16-second rack, 17-first gear, 18-rotating shaft, 19-second gear, 20-bearing, 21-first extrusion head, 22-second extrusion head, 23-first spring, 24-second spring, 25-sleeve. DETAILED DESCRIPTION

[0017] In order to more intuitively and completely understand the technical solution of the present invention, the following non-limiting features are described in conjunction with the accompanying drawings of the present invention:

[0018] like Figure 1 — Figure 3 As shown, a locking fixture includes a base 1, a first bracket 2 and a second bracket 3 are fixed to the left and right ends of the top of the base 1 respectively, a fixed platform 4 is fixed to the top of the first bracket 2, and a first slide bar 5 that slides left and right with the fixed platform 4 is installed on the fixed platform 4, a handle 6 and a first splint 7 are fixed to the left and right ends of the first slide bar 5 respectively, a side plate 8 is fixed to the front end of the first splint 7, a long rod 9 extending forward and backward is fixed to the lower end of the side plate 8, a first rack 10 extending left and right is fixed to the right end of the long rod 9, a sleeve 11 is fixed to the upper end of the second bracket 3, a second slide bar 12 that slides left and right with the sleeve 11 is installed on the sleeve 11, a second splint 13 and a fixed plate 14 are fixed to the left and right ends of the second slide bar 12 respectively, the second splint 13 is located on the left side of the second bracket 3, a connecting plate 15 is fixed to the bottom of the fixed plate 14, and a second rack 16 extending left and right is fixed to the bottom of the connecting plate 15, and a gear transmission mechanism is installed between the first rack 10 and the second rack 16. The number of the first sliding rods 5 is preferably two, and the number of the sleeves 11 and the second sliding rods 12 are preferably two.

[0019] like Figure 2 As shown, in order to enable the long rod 9 to move left and right stably, a shaft sleeve 25 is fixed to the lower right end of the second bracket 3, and the long rod 9 passes through the shaft sleeve 25 and slides with the shaft sleeve 25 left and right.

[0020] like Figure 2As shown, the gear transmission mechanism includes a first gear 17, a rotating shaft 18 and a second gear 19. A plurality of bearings 20 are fixed to the right side of the lower end of the second bracket 3. The rotating shaft 18 extends forward and backward through the bearings 20. The first gear 17 and the second gear 19 are respectively fixed to the front and rear ends of the rotating shaft 18. The first gear 17 is engaged with the first rack 10, and the second gear 19 is engaged with the second rack 16.

[0021] The left end of the connecting plate 15 is fixedly connected to the bottom of the second clamping plate 13, so that the second clamping plate 13 is installed more firmly.

[0022] like Figure 3 As shown, the right end of the first clamping plate 7 is mounted with multiple retractable first extrusion heads 21, and the left end of the second clamping plate 13 is mounted with multiple retractable second extrusion heads 22. The first clamping plate 7 is provided with multiple first grooves 71, each open at the right end. A first spring 23 extending left and right is fixed in each first groove 71, with the right end of the first spring 23 fixed to the left end of the first extrusion head 21. The second clamping plate 13 is provided with multiple second grooves 131, each open at the left end. A second spring 24 extending left and right is fixed in each second groove 131, with the left end of the second spring 24 fixed to the right end of the second extrusion head 22. When a workpiece is placed between the first clamping plate 7 and the second clamping plate 13, the first and second extrusion heads 21 and 22 contact the workpiece. Due to the presence of the first and second springs 23 and 24, when the first and second extrusion heads 21 and 22 encounter resistance from the workpiece, they are compressed, generating a force in the direction opposite to the resistance. This force helps to clamp the workpiece more tightly between the first and second clamping plates 7 and 13. In addition, the introduction of the first spring 23 and the second spring 24 not only provides additional clamping force, but also allows the first clamping plate 7 and the second clamping plate 13 to adapt to workpieces of different sizes and shapes to a certain extent, thereby enhancing the stability and adaptability of the clamping.

[0023] When in use, place the workpiece on the base 1, the workpiece is located between the first clamping plate 7 and the second clamping plate 13, and after pushing the handle 6 to the right by hand, the handle 6 will drive the first slide bar 5 and the first clamping plate 7 to move to the right, the first clamping plate 7 drives the side plate 8 and the long rod 9 to move to the right, the long rod 9 drives the first rack 10 to move to the right, the first rack 10 drives the first gear 17 to rotate, the first gear 17 drives the rotating shaft 18 to rotate, the rotating shaft 18 drives the second gear 19 to rotate, the second gear 19 drives the second rack 16 to move to the left, and the second rack 16 drives the connecting plate 15, the fixed plate 14, the second slide bar 12, and the second clamping plate 13 to move to the left, so that the first clamping plate 7 and the second clamping plate 13 can clamp the workpiece.

[0024] After holding the handle 6 by hand and pushing the handle 6, the first clamping plate 7 and the second clamping plate 13 can move at the same time, and the first rack 10 and the second rack 16 are linked through the gear transmission mechanism to achieve synchronous movement of the first clamping plate 7 and the second clamping plate 13. This design greatly simplifies the operating steps and improves the operating efficiency. At the same time, the synchronous adjustment ensures the consistency of the clamping force, thereby improving the positioning and processing accuracy of the workpiece.

[0025] Of course, the above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All simple modifications and equivalent structural changes made using the contents of the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. A locking fixture, comprising a base, characterized in that: The left and right ends of the second slide bar are respectively fixed with a second bracket and a second bracket on the top of the base, and a fixed platform is fixed on the top of the first bracket, and a first sliding rod that cooperates with the fixed platform for sliding left and right is installed on the fixed platform, and a handle and a first splint are fixed on the left and right ends of the first slide bar respectively, and a side plate is fixed on the front end of the first splint, and a long rod extending forward and backward is fixed on the lower end of the side plate, and a first rack extending left and right is fixed on the right end of the long rod, and a sleeve is fixed on the upper end of the second bracket, and a second sliding rod that cooperates with the sleeve for sliding left and right is installed on the sleeve, and a second splint and a fixed plate are respectively fixed on the left and right ends of the second slide bar, and the second splint is located on the left side of the second bracket, and a connecting plate is fixed to the bottom of the fixed plate, and a second rack extending left and right is fixed on the bottom of the connecting plate, and a gear transmission mechanism is installed between the first rack and the second rack.

2. The locking fixture according to claim 1, characterized in that: The gear transmission mechanism includes a first gear, a rotating shaft and a second gear. Multiple bearings are fixed to the right side of the lower end of the second bracket. The rotating shaft extends forward and backward through the bearings. The first gear and the second gear are respectively fixed to the front and rear ends of the rotating shaft. The first gear is engaged with the first rack, and the second gear is engaged with the second rack.

3. The locking fixture according to claim 1, characterized in that: The left end of the connecting plate is fixedly connected to the bottom of the second clamping plate.

4. The locking fixture according to claim 1, characterized in that: A plurality of retractable first extrusion heads are installed at the right end of the first clamping plate, and a plurality of retractable second extrusion heads are installed at the left end of the second clamping plate.

5. The locking fixture according to claim 4, characterized in that: The first clamping plate is provided with a plurality of first grooves with open right ends, and a first spring extending left and right is fixed in each first groove, and the right end of the first spring is fixed to the left end of the first extrusion head.

6. The locking fixture according to claim 4, characterized in that: The second clamping plate is provided with a plurality of second grooves with left ends opened. A second spring extending left and right is fixed in each second groove. The left end of the second spring is fixed to the right end of the second extrusion head.

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