Self-locking positioning jig and automatic adjustment production line

Abstract

The utility model relates to a kind of self-locking positioning fixture and automatic adjustment production line.It solves the technical problem of unreasonable design of existing fixture.The self-locking positioning fixture includes: fixture seat;Difference adjustment module, including at least two stacked and horizontally sliding adjustment plate, and the adjustment shaft being set between two adjustment plates along the adjustment plate sliding direction, the adjustment shaft is connected in one adjustment plate and one end of the adjustment shaft and another adjustment plate meet;Product positioning tool, set in the upper end of the difference adjustment module;Pressing plate, vertically sliding setting on the fixture seat and located above product positioning tool, the pressing plate is connected with the swing arm for driving pressing plate lifting and falling.The self-locking positioning fixture reaches the self-locking purpose of fixture, prevents the difference adjustment module from occurring self deviation, avoids the problem that error occurs in automatic adjustment, and the overall space occupation is small, and gravity center is in the middle to facilitate stable clamping transfer.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixtures, and relates to a self-locking positioning fixture and an automatic adjustment production line. Background Technology

[0002] For example, Chinese patent literature discloses an electronic assembly product production line [202220456609.X], which includes a frame, a lower flow channel set on the frame, an upper flow channel located above the lower flow channel, a lifting assembly, a lever assembly, a barcode scanning assembly, and a fixture assembly. Materials flow into or out from the lower flow channel. The lifting assembly can drive the materials to flow between the lower flow channel and the upper flow channel. The lever assembly can move the materials between the upper flow channel and the barcode scanning assembly. The fixture assembly can grip and position the materials in the fixture assembly.

[0003] The drawback of the above technical solution is that it lacks a design for automated adjustment of the fixture, and the fixture itself lacks a self-fixing structure, so the product tooling is prone to displacement during the transfer process. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a self-locking positioning fixture and an automatic adjustment production line.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] The self-locking positioning fixture includes:

[0007] Jig base;

[0008] The step adjustment module includes at least two stacked and horizontally sliding adjustment plates, and an adjustment shaft passing through the two adjustment plates along the sliding direction of the adjustment plates. The adjustment shaft is connected to one of the adjustment plates and one end of the adjustment shaft is connected to the other adjustment plate.

[0009] The product positioning fixture is located at the upper end of the step adjustment module;

[0010] A pressure plate is vertically slidably mounted on the fixture seat and located above the product positioning fixture. The pressure plate is connected to a swing arm for driving the pressure plate to rise and fall. When the swing arm is not subjected to external force, the pressure plate presses down on the product positioning fixture.

[0011] Furthermore, the step difference adjustment module has two sets stacked together, and the sliding directions of the two sets of step difference adjustment modules are perpendicular.

[0012] Furthermore, the upper end of the adjustment plate at the bottom is provided with a sliding protrusion, and the bottom of the adjustment plate at the top is provided with a sliding groove for the sliding protrusion to be inserted into.

[0013] Furthermore, both adjustment plates have outwardly protruding parts on the same side, the adjustment shaft is horizontally inserted through one of the protruding parts, and one end of the adjustment shaft is connected to the other protruding part.

[0014] Furthermore, the product positioning fixture includes a positioning groove for positioning and installing the product, and a positioning block for closing the positioning groove.

[0015] Furthermore, the fixture base is L-shaped, and a vertical block is provided on one side of the fixture base.

[0016] Furthermore, a lifting plate is slidably provided on one side of the vertical block of the fixture seat, the pressure plate is disposed on the lifting plate, and one end of the swing arm acts on the lifting plate.

[0017] Furthermore, the lifting plate is provided with an installation port, and one end of the swing arm is provided with an eccentric wheel that is embedded in the installation port.

[0018] Furthermore, a clamping post is provided at the upper end of the fixture base and above the pressure plate.

[0019] This utility model also provides an automatic adjustment production line, which has the self-locking positioning fixture as described above.

[0020] Compared with existing technologies, this self-locking positioning fixture uses the swing arm to fall naturally under its own weight, so that the pressure plate always presses against the upper end of the product positioning fixture without external force, thus achieving the self-locking purpose of the fixture. At the same time, it prevents the step adjustment module from shifting during the conveying and adjustment process, avoiding the problem of errors in automated adjustment. Moreover, the entire component on the fixture base is located in the same three-dimensional space, with a small overall space occupation and a central center of gravity, which facilitates stable clamping and transfer. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a self-locking positioning fixture provided by the present invention.

[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of the self-locking positioning fixture.

[0023] In the diagram, 10 is the fixture base; 101 is the vertical block; 11 is the product positioning fixture; 111 is the positioning groove; 112 is the positioning block; 12 is the step adjustment module; 121 is the adjustment plate; 122 is the adjustment shaft; 123 is the protruding block; 124 is the sliding protrusion; 125 is the sliding groove; 13 is the pressure plate; 14 is the lifting plate; 15 is the swing arm; 16 is the clamping column; 17 is the fixture guide rail; 18 is the eccentric wheel; and 19 is the mounting port. Detailed Implementation

[0024] Example 1, please refer to Figures 1 to 2 This is a schematic diagram of a self-locking positioning fixture provided by this utility model. The self-locking positioning fixture includes: a fixture base 10; a step adjustment module 12 disposed on the fixture base 10; a product positioning fixture 11; and a pressure plate 13 pressing down on the product positioning fixture 11. It is conceivable that this self-locking positioning fixture also includes other functional components and specific structures, such as electrical connection components, installation structures, etc., which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0025] The fixture base 10 serves as the carrier of the entire fixture. In this embodiment, the fixture base 10 is L-shaped, with a rectangular block at the bottom. A product positioning fixture 11 is provided at the upper end of the fixture base 10, and vertical blocks 101 are formed on the side of the fixture base 10 for sliding connection of the pressure plate 13. The product positioning fixture 11 includes a positioning groove 111 for positioning and installing the product, and a positioning block 112 for closing the positioning groove 111.

[0026] In other embodiments, the product positioning fixture 11 may also adopt a contour positioning method or a clamping positioning method.

[0027] A step adjustment module 12 is provided at the bottom of the product positioning fixture 11. The step adjustment module 12 is used to adjust the center position of the product positioning fixture 11. Specifically, the step adjustment module 12 includes at least two stacked adjustment plates 121. The two adjustment plates 121 are connected by a guide shaft or a vertical insertion structure to form a horizontal movement guide. In this embodiment, the two adjustment plates 121 are connected by a concave-convex insertion to achieve vertical guidance. Specifically, the upper end of the bottom adjustment plate 121 is provided with a sliding protrusion 124, and the bottom of the upper adjustment plate 121 is provided with a sliding groove 125 for the sliding protrusion 124 to be correspondingly inserted. An adjustment shaft 122 is inserted between two adjustment plates 121. The adjustment shaft 122 is connected to one of the adjustment plates 121, and one end of the adjustment shaft 122 is connected to the other adjustment plate 121. It can be imagined that the adjustment shaft 122 is located on the side of the adjustment plate 121. There is a protruding block 123 on one side of the two adjustment plates 121. The adjustment shaft 122 is horizontally inserted between the two protruding blocks 123. The connection method of the adjustment shaft 122 is a spiral connection. The distance between the two protruding blocks 123 is adjusted by adjusting the depth of the adjustment shaft 122, thereby adjusting the relative position between the two adjustment plates 121.

[0028] Optimally, the adjusting shaft 122 is a tapered micrometer structure. The micrometer is existing technology, and its telescopic nature is achieved through an end knob. The subsequent step adjustment device 50, in conjunction with rotating the adjusting shaft 122, also adjusts the horizontal position of the top of the adjusting plate 121. Positioning the adjusting shaft 122 of the step adjustment module 12 horizontally on the side reduces space occupation and prevents interference from subsequent adjustment components, facilitating automated adjustment. Furthermore, the step adjustment module 12 has two sets, vertically spaced on adjacent sides, with the sliding directions of the two sets perpendicular. This allows adjustment of the product positioning fixture 11 in two directions, achieving the goal of centering the product positioning fixture 11.

[0029] In this embodiment, a pressure plate 13 is raised and lowered on the fixture base 10 to press against the upper end of the product positioning fixture 11. The pressure plate 13 presses down on the product positioning fixture 11 to ensure its conveying stability. Specifically, the fixture base 10 has an L-shaped cross-section structure. A lifting plate 14 is slidably arranged on the inner side of the vertical block of the fixture base 10 through the fixture guide rail 17. A swing arm 15 with one end connected to the lifting plate 14 is inserted through the fixture base 10. The swing arm 15 is suspended and falls naturally under its own weight, so that the pressure plate 13 always presses against the upper end of the product positioning fixture 11 without external force, achieving the self-locking purpose of the fixture. At the same time, it prevents the step adjustment module 12 from shifting during the conveying and adjustment process, avoiding the problem of errors in automatic adjustment.

[0030] Optimally, the swing arm 15 maintains a stable state and controls its rotation stroke through an external meshing gear or an internal torsion spring, thereby slowing down the adjustment speed of the swing arm 15 and increasing the adjustment accuracy. The swing arm 15 is rotatably mounted on the fixture seat 10. The lifting plate 14 has a mounting port 19. One end of the swing arm 15 has an eccentric wheel 18 that is embedded in the mounting port 19 of the lifting plate 14. After rotating the swing arm 15, the vertical height of the lifting plate 14 is adjusted by the relative position of the eccentric wheel 18 and the lifting plate 14. The pressure plate 13 is mounted on the lifting plate 14 and located above the product positioning fixture 11. The pressure plate 13 adjusts its height synchronously with the lifting plate 14. When the pressure plate 13 is pressed down on the product positioning fixture 11, the step adjustment module 12 is locked and cannot be adjusted. When the pressure plate 13 rises above the product positioning fixture 11, the step adjustment module 12 is unlocked and can be adjusted.

[0031] In other embodiments, a drag chain is provided between the jig seat 10 and the lifting plate 14 to control the stroke, and the swing arm 15 is directly connected to the lifting plate 14 as a protruding drive end, which facilitates the corresponding cooperation of the subsequent pressure plate adjustment device 60.

[0032] In this embodiment, the upper end of the jig seat 10 is provided with a clamping post 16. The clamping post 16 is horizontally arranged and located above the pressure plate 13. It can be imagined that the entire components on the jig seat 10 are located in the same three-dimensional space, occupying a small overall space, and the center of gravity is central, which facilitates stable clamping and transfer.

[0033] It should be noted that the stroke drive in this embodiment requires the cooperation of sensors, such as photoelectric sensors on the guide rail and the slider. In addition, the motors, cylinders and sensors involved in this embodiment are all commercially available parts and are existing technologies. Their specific models and structures will not be described in detail here.

[0034] Example 2: This utility model also provides an automatic adjustment production line with the above-mentioned self-locking positioning fixture. Except for the self-locking positioning fixture, the other components are all existing technology or commercially available parts.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A self-locking positioning fixture, characterized in that, include: Jig base (10); The step adjustment module (12) includes at least two stacked and horizontally sliding adjustment plates (121), and an adjustment shaft (122) passing through the two adjustment plates (121) along the sliding direction of the adjustment plates (121). The adjustment shaft (122) is connected to one of the adjustment plates (121) and one end of the adjustment shaft (122) is connected to the other adjustment plate (121). The product positioning fixture (11) is set at the upper end of the step adjustment module (12); The pressure plate (13) is vertically slidably disposed on the fixture seat (10) and located above the product positioning fixture (11). The pressure plate (13) is connected to a swing arm (15) for driving the pressure plate (13) to rise and fall. When the swing arm (15) is not subjected to external force, the pressure plate (13) presses down on the product positioning fixture (11).

2. The self-locking positioning fixture according to claim 1, characterized in that, The step adjustment module (12) has two sets stacked together, and the sliding directions of the two sets of step adjustment modules (12) are perpendicular.

3. The self-locking positioning fixture according to claim 2, characterized in that, The adjustment plate (121) at the bottom is provided with a sliding protrusion (124) at the upper end, and the adjustment plate (121) at the top is provided with a sliding groove (125) for the sliding protrusion (124) to be inserted into.

4. The self-locking positioning fixture according to claim 3, characterized in that, Both adjustment plates (121) have outwardly protruding protrusions (123) on the same side. The adjustment shaft (122) is horizontally inserted through one of the protrusions (123), and one end of the adjustment shaft (122) is connected to the other protrusion (123).

5. The self-locking positioning fixture according to claim 1, characterized in that, The product positioning fixture (11) includes a positioning groove (111) for positioning and installing the product, and a positioning block (112) for closing the positioning groove (111).

6. The self-locking positioning fixture according to claim 1, characterized in that, The fixture seat (10) is L-shaped, and a vertical block (101) is provided on one side of the fixture seat (10).

7. The self-locking positioning fixture according to claim 6, characterized in that, A lifting plate (14) is slidably provided on one side of the vertical block (101) of the fixture seat (10), the pressure plate (13) is provided on the lifting plate (14), and one end of the swing arm (15) acts on the lifting plate (14).

8. The self-locking positioning fixture according to claim 7, characterized in that, The lifting plate (14) is provided with an installation port (19), and one end of the swing arm (15) is provided with an eccentric wheel (18) that is embedded in the installation port (19).

9. The self-locking positioning fixture according to claim 1, characterized in that, A clamping post (16) is provided at the upper end of the fixture seat (10) and above the pressure plate (13).

10. An automatically adjusting production line, characterized in that, The self-locking positioning fixture as described in any one of claims 1-9.

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