Fixing tool for drawing force test
By designing a fixture suitable for plastic parts, the problem of fixing various shaped plastic parts in pull-out force testing was solved, achieving stable fixing of workpieces with different shapes and accurate pull-out force testing.
Patent Information
- Application Number
- CN202422915818.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The lack of universal fixtures makes it difficult to fix various plastic parts with different shapes during pull-out force testing.
A fixed fixture including a base plate, a support beam, and a support head position adjustment mechanism was designed. By combining the movable support head and the support head fixing block, the fixture can fix workpieces of different shapes. By using the contour block to match the irregular structure, the tensile testing machine wire is positioned at the center of the product inspection point.
It achieves stable fixation of plastic parts with different shapes, ensuring the accuracy and reliability of tensile testing and meeting the pull-out force testing requirements of design specifications.
Smart Images
Figure CN223769907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical technology, specifically to a fixture for fixing products for pull-out force testing. Background Technology
[0002] To determine whether the welds between plastic parts are secure, a pull-out force test is often used. This test examines the pull-out force that the welded product can withstand, thereby determining whether the stability of the welded connection is within the reasonable range specified in the design specifications.
[0003] Due to the diverse shapes of plastic parts, custom-made fixtures are often required to fix the workpiece during pull-out force testing.
[0004] Currently, there is a lack of a universal fixture to secure plastic parts of various shapes during pull-out force testing. Utility Model Content
[0005] In view of the problems existing in the prior art, this utility model provides a fixing fixture for pull-out force testing to solve at least one of the above technical problems.
[0006] To achieve the above objectives, this utility model provides a fixing fixture for pull-out force testing, characterized in that it includes a base plate, wherein the base plate has a mounting position for passing through a mounting screw;
[0007] The left and right sides of the base plate are respectively connected to the left support beam and the right support beam by support columns;
[0008] It also includes a support head position adjustment mechanism, which includes a movable crossbeam block, a support head fixing block and a movable support head. The left and right ends of the movable crossbeam block are slidably connected to the left support beam and the right support beam respectively in the front-back direction.
[0009] The support head fixing block is slidably connected to the movable crossbeam block with the left and right direction as the sliding direction;
[0010] The support head fixing block has a through hole for longitudinal sliding connection of the movable support head, and the movable support head is locked to the support head fixing block by a locking screw.
[0011] This utility model uses a support head position adjustment mechanism to facilitate the adjustment of the position of the movable support head, which can meet the needs of workpieces with different shapes and achieve the fixation of the workpiece.
[0012] More preferably, the mounting position is a guide hole for sliding connection of the mounting screw.
[0013] More preferably, the mounting position is a strip-shaped hole, and the length direction of the strip-shaped hole is the front-to-back direction.
[0014] It facilitates adjusting the relative position of the base plate and the tensile testing machine during installation, ensuring that the tensile testing machine wire is centered as much as possible at the product testing point.
[0015] More preferably, the mounting position is provided with three mounting positions, which are arranged from left to right as a first mounting position, a second mounting position, and a third mounting position;
[0016] The second mounting position has a central positioning hole that extends vertically through it.
[0017] The center of the central positioning hole is aligned with the wire of the tensile testing machine, making it easy to determine the center point.
[0018] More preferably, the support head fixing block includes a locking part, a sliding guide part, and a through-hole part connected sequentially from top to bottom, and the through-hole part has the through-hole;
[0019] The sliding guide includes two opposing guide structures, and the gap area between the two guide structures is slidably connected to the movable crossbeam block. The movable crossbeam block has a clearance hole that passes longitudinally through the movable support head.
[0020] The locking part includes two opposing limiting structures, the distance between the two limiting structures is less than the distance between the two guide structures, the gap area of the two limiting structures and the gap area of the two guide structures are both facing the through hole, and at least one of the two limiting structures is threaded with the locking screw, which is used to abut against the side wall of the movable support head.
[0021] It facilitates locking of the movable support head.
[0022] More preferably, the left and right sides of the movable crossbeam block are semi-cylindrical curved surfaces.
[0023] More preferably, the clearance hole is a strip-shaped hole with the left-right direction as its length direction, and the upper and lower ends of the strip-shaped hole are through and conductive.
[0024] More preferably, the support head is a rod-shaped body.
[0025] More preferably, it further includes at least two contour blocks, each contour block having a contour surface that matches the lower surface of the workpiece, and the contour blocks being located between the base plate and the movable support head.
[0026] This facilitates better workpiece support. The movable support head faces the contour block directly. The vertical projection of the movable support head lies within the vertical projection area of the contour block.
[0027] More preferably, two movable crossbeam blocks are provided;
[0028] A support head fixing block is slidably connected to a movable crossbeam block;
[0029] Two of the aforementioned support head fixing blocks are slidably connected to another movable crossbeam block.
[0030] Beneficial effects: This utility model, through the support head position adjustment mechanism, facilitates the adjustment of the position of the movable support head, meets the requirements of workpieces with different shapes, and achieves the fixation of the workpiece. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the structure of this utility model;
[0032] Figure 2 This is a schematic diagram of the structure in use of a specific embodiment 1 of this utility model;
[0033] Figure 3 This is a partial structural schematic diagram of a specific embodiment 1 of the present utility model;
[0034] Figure 4 This is a schematic diagram of a specific embodiment 2 of the present utility model;
[0035] Figure 5 This is a structural diagram of a specific embodiment 2 of the present invention in use.
[0036] Wherein: 1 is the base plate, 2 is the support column, 3 is the left support beam, 4 is the right support beam, 5 is the movable crossbeam block, 6 is the support head fixing block, 7 is the movable support head, 8 is the locking screw, 9 is the contour block, 11 is the mounting position, 12 is the center positioning round hole, 61 is the locking part, 62 is the sliding guide part, and 63 is the through hole part. Detailed Implementation
[0037] The present invention will be further described below with reference to the accompanying drawings.
[0038] See Figures 1 to 3 Specific Embodiment 1: A fixed fixture for pull-out force testing includes a base plate 1 with mounting positions 11 for mounting screws to pass through. The left and right sides of the base plate 1 are connected to a left support beam 3 and a right support beam 4 respectively via support columns 2. It also includes a support head position adjustment mechanism, which includes a movable crossbeam block 5, a support head fixing block 6, and a movable support head 7. The left and right ends of the movable crossbeam block 5 are slidably connected to the left support beam 3 and the right support beam 4 in a back-to-back direction, respectively. The support head fixing block 6 is slidably connected to the movable crossbeam block 5 in a left-to-right direction. The support head fixing block 6 has a through hole for longitudinally sliding connection of the movable support head, and the movable support head is locked to the support head fixing block 6 by locking screws 8. This utility model, through the support head position adjustment mechanism, facilitates the adjustment of the movable support head position, accommodates workpieces of different shapes, and achieves workpiece fixation.
[0039] The left support beam 3 and the right support beam 4 are provided with oppositely arranged and through-type sliding grooves, which are slidably connected to the movable crossbeam block.
[0040] Mounting position 11 is a guide hole for sliding connection mounting screws. Mounting position 11 is a strip-shaped hole with its length in the front-to-back direction. This facilitates adjustment of the relative position of the base plate 1 and the tensile testing machine during installation, ensuring that the tensile testing machine wire is as centered as possible at the product testing point.
[0041] There are three mounting positions 11, which are arranged from left to right as the first mounting position, the second mounting position, and the third mounting position; the second mounting position has a through-hole 12. The center of the through-hole 12 is aligned with the wire of the tensile testing machine, which facilitates the determination of the center point.
[0042] The support head fixing block 6 includes a locking part 61, a sliding guide part 62, and a through-hole part 63 connected sequentially from top to bottom. The through-hole part 63 has a through-hole. The sliding guide part 62 includes two oppositely arranged guide structures. The gap area between the two guide structures is slidably connected to the movable crossbeam block 5. The movable crossbeam block 5 has a clearance hole that passes longitudinally through the movable support head 7. The locking part 61 includes two oppositely arranged limiting structures. The distance between the two limiting structures is smaller than the distance between the two guide structures. The gap areas of the two limiting structures and the gap areas of the two guide structures are directly opposite the through-hole. At least one of the two limiting structures is threaded with a locking screw 8, which is used to abut against the side wall of the movable support head 7. This facilitates locking the movable support head 7.
[0043] The left and right sides of the movable crossbeam block 5 are semi-cylindrical curved surfaces.
[0044] The clearance hole is a strip-shaped hole with its length running from left to right, and the top and bottom ends of the strip-shaped hole are connected. The support head is a rod-shaped body.
[0045] There are two movable crossbeam blocks 5; one movable crossbeam block 5 has a support head fixing block 6 slidably connected to it; the other movable crossbeam block 5 has two support head fixing blocks 6 slidably connected to it.
[0046] The working principle of this utility model is as follows:
[0047] The base plate 1 is fixed to the base of the tensile testing machine using mounting screws. The product formed by the welded first and second workpieces is then placed on the base plate 1. The movable crossbeam block 5 and the movable support head 7 are adjusted to find a suitable position using the fixing block 6. The movable support head is then inserted and fixed with the locking screw 8. The movable support head holds the first workpiece in place. The tensile testing machine wire is then inserted into the gap at the welded connection between the first and second workpieces to fix the wire to the second workpiece. After fixing, the tensile testing machine can be turned on to test whether the pull-out force is within the design specifications.
[0048] The movable support head and the base plate clamp the upper and lower sides of the first workpiece. A second workpiece is welded and fixed to the upper side of the first workpiece. The tensile testing machine wire is connected to the second workpiece.
[0049] For the first workpiece, whose lower surface is planar, the first workpiece is placed directly on the base plate.
[0050] See Figure 4 as well as Figure 5 In specific embodiment 2, based on specific embodiment 1, at least two contour blocks 9 are further included. Each contour block 9 has a contoured surface that matches the lower surface of the workpiece. The contour blocks 9 are located between the base plate 1 and the movable support head 7. This facilitates better workpiece support. The contouring components are suitable for irregularly shaped structures where the lower surface of the first workpiece is not planar.
[0051] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A fixing tool for a pull test, characterized by, The base plate is provided with mounting positions for mounting screws; The left and right sides of the base plate are connected with the left and right support beams respectively through support columns; The support head position adjusting mechanism comprises a movable cross beam block, a support head fixing block and a movable support head, the left and right ends of the movable cross beam block are slidably connected with the left and right support beams in the front-back direction; The support head fixing block is slidably connected with the movable cross beam block in the left-right direction; The support head fixing block is provided with a through hole for slidably connecting the movable support head, and the movable support head is locked with the support head fixing block through a locking screw.
2. The fixing tool for pull-out test according to claim 1, characterized in that: The mounting position is a guide hole for slidably connecting the mounting screw.
3. The fixing tool for pull-out test according to claim 1, characterized in that: The mounting position is a strip-shaped hole, and the length direction of the strip-shaped hole is the front-back direction.
4. The fixing tool for pull-out test according to claim 1, characterized in that: The mounting position is provided with three mounting positions arranged from left to right, namely a first mounting position, a second mounting position and a third mounting position; The second mounting position is provided with a center positioning circular hole penetrating from top to bottom.
5. The fixing tool for pull-out test according to claim 1, characterized in that: The support head fixing block comprises a locking part, a sliding guide part and a through hole part connected in sequence from top to bottom, and the through hole part is provided with the through hole; The sliding guide part comprises two oppositely arranged guide structures, the gap region between the two guide structures is slidably connected with the movable cross beam block, and the movable cross beam block is provided with an avoidance hole penetrating the movable support head in the longitudinal direction; The locking part comprises two oppositely arranged limiting structures, the distance between the two limiting structures is smaller than the distance between the two guide structures, the gap region of the two limiting structures and the gap region of the two guide structures are opposite to the through hole, and at least one of the two limiting structures is threadedly connected with the locking screw, and the locking screw is used for abutting against the side wall of the movable support head.
6. The fixing tool for pull-out test according to claim 5, characterized in that: The left and right sides of the movable cross beam block are semicylindrical curved surfaces.
7. The fixture of claim 5, wherein: The avoidance hole is a strip-shaped hole with the left-right direction as the length direction, and the upper and lower ends of the strip-shaped hole are in communication.
8. The fixture of claim 1, wherein: The support head is a rod-shaped body.
9. The fixture of claim 1, wherein: At least two profiled blocks are further included, the profiled blocks are provided with profiled surfaces matched with the lower surface of the workpiece, and the profiled blocks are located between the base plate and the movable support head.
10. The fixture of claim 1, wherein: The movable cross beam block is provided with two; One movable cross beam block is slidably connected with one support head fixing block; The other movable cross beam block is slidably connected with two support head fixing blocks.