Tensile machine for screw production

Abstract

The invention relates to the related technical field of material testing, in particular to a tensile machine for screw production, which comprises a supporting strip, a base is fixedly connected to the upper surface of the supporting strip, an operation table is fixedly connected to the upper surface of the base, and a protection box mechanism is arranged on the upper surface of the operation table. And a self-adaptive fixing mechanism is arranged on the surface of one side of the protection box mechanism. According to the tensile machine for screw production, through the arrangement of the self-adaptive fixing mechanism, when a screw needs to be detected, clamping connection is conducted on a clamping groove in the self-adaptive fixing mechanism, and a rotating groove is rotated to move up and down, so that a first rotating column, a second rotating column and a fixing block are driven to fix the screw for a subsequent tensile test; through the arrangement, the self-adaptive fixing mechanism can fix screws of different specifications in a self-adaptive manner, and an operator can quickly fix the screws on the tensile machine, so that the preparation work time is shortened, and the efficiency of the whole test process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to material testing, and in particular to a tensile testing machine used for screw production. Background Art

[0002] In the field of material testing technology, with the continuous development and progress of industry, accurate testing and evaluation of material properties have become increasingly important. In the past, material testing technology was relatively simple and rough, and the accuracy and reliability of testing equipment were limited. In the early stages of screw production, the tensile test of screw materials may only be performed by simple mechanical devices to apply rough tensile force, and then judge whether the quality of the screw is qualified based on experience. This method cannot accurately obtain the specific mechanical performance parameters of the screw, and it is difficult to ensure the consistency and accuracy of the test results. Therefore, there is a special need for a tensile machine for screw production.

[0003] However, due to design limitations, existing tensile testing machines used for screw production often require corresponding pads and tension rings to be fixed and installed when testing screws. Operators need to spend a lot of time preparing suitable pads and tension rings, which greatly reduces the test efficiency. Moreover, as the screw specifications are updated or increased, new pads and tension rings may need to be purchased continuously, which continuously increases costs. Summary of the invention

[0004] The object of the present invention is to provide a tensile testing machine for screw production, so as to solve the problem that the existing tensile testing machine for screw production proposed in the above background technology often needs to take corresponding pads and tension rings for fixing and installing when testing the screws due to design limitations. The operator needs to spend a lot of time preparing suitable pads and tension rings, which greatly reduces the test efficiency. Moreover, as the screw specifications are updated or increased, it may be necessary to continuously purchase new pads and tension rings, which continuously increases the cost.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a tensile testing machine for screw production, comprising a support bar, a base is fixedly connected to the upper surface of the support bar, an operating table is fixedly connected to the upper surface of the base, a fixing seat is fixedly connected to the upper surface of the operating table, a protection box mechanism is arranged on the upper surface of the operating table, and an adaptive fixing mechanism is arranged on one side surface of the protection box mechanism;

[0006] The adaptive fixing mechanism includes a locking groove, a locking column, a fixed disk, a rotating groove, a rotating ball, a displacement disk, a first rotating column, a second rotating column and a fixed block. One side surface of the protection box mechanism is fixedly connected with the locking groove, one side surface of the locking groove is lockingly connected with the locking column, one side surface of the locking column is fixedly connected with the fixed disk, the lower surface of the locking column is slidably connected with the rotating groove, one side surface of the rotating groove is slidably connected with a rotating ball, one side surface of the rotating ball is slidably connected with the displacement disk, one side surface of the fixed disk is rotatably connected with the first rotating column, one side surface of the displacement disk is rotatably connected with the second rotating column, and one side surface of the second rotating column is rotatably connected with the fixed block.

[0007] Preferably, the support bars are symmetrically arranged in two groups about the mid-perpendicular line of the base and symmetrically arranged on the lower surface of the base. The adaptive fixing mechanism is provided with one group on the upper surface of the fixing seat and one group on the side surface of the protection box mechanism, which are respectively used to fix the upper and lower sides of the tension bolts to be detected.

[0008] Preferably, a thread is provided on the lower surface of the locking column, and the rotating groove can move up and down through the thread on the lower surface of the locking column when rotating. The outer surface of the rotating groove is provided with multiple groups of anti-slip grooves, and the staff can easily rotate the rotating groove through the anti-slip grooves.

[0009] Preferably, twelve rotating balls are symmetrically arranged about the central axis of the engaging column. Through the arrangement of the rotating balls, the sliding friction between the rotating groove and the displacement disk is changed into rolling friction, thereby reducing wear and extending the service life.

[0010] Preferably, the first rotating columns are symmetrically arranged on the outer surface of the fixed disk with respect to the midline of the fixed disk, and four groups are provided, and the second rotating columns are symmetrically arranged on the outer surface of the displacement disk with respect to the midline of the displacement disk, and four groups are provided.

[0011] Preferably, a rotating shaft is provided on one side surface of the second rotating column, and one end of the first rotating column is rotatably connected to the rotating shaft. When the first rotating column rotates around the fixed disk, the second rotating column also rotates with the rotation of the first rotating column.

[0012] Preferably, the fixing block is rotatably connected to one end of each second rotating column, and a gripping thread is provided on one side surface of the fixing block, and the gripping thread can be engaged with the screw to be detected.

[0013] Preferably, the protection box mechanism includes a connecting frame, a hinge, an opening and closing door, a handle, a movable adsorption magnetic strip, a driven adsorption magnetic strip, a cylinder and a data cable; the upper surface of the operating table is fixedly connected to the connecting frame, one side surface of the connecting frame is fixedly connected to the hinge, one side surface of the hinge is fixedly connected to the opening and closing door, one side surface of the opening and closing door is fixedly connected to the handle, one side surface of the opening and closing door is fixedly connected to the movable adsorption magnetic strip, the upper surface of the connecting frame is fixedly connected to the cylinder, and the upper surface of the connecting frame is fixedly connected to the data cable.

[0014] Preferably, the hinges are provided with two groups on the inner surfaces of the front and rear sides of the connecting frame, arranged up and down, and the opening and closing door is fixedly connected with one group on one side surface of each combination of hinges.

[0015] Preferably, explosion-proof glass is fixedly connected to one side surface of the opening and closing door, and a group of movable adsorption magnetic strips are respectively arranged on one side of the opening and closing door and the connecting frame. When the opening and closing door is closed, the two groups of movable adsorption magnetic strips are firmly adsorbed to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the tensile testing machine for screw production, through the setting of the adaptive fixing mechanism, when it is necessary to fix the screw for tensile testing, firstly, the engaging column in the adaptive fixing mechanism is engaged with the engaging groove, and the lower surface of the engaging column is provided with a thread, which is slidably connected with the rotating groove, and the staff rotates the rotating groove through the anti-slip pattern on the outer side of the rotating groove, and the rotating groove can be moved up and down due to the thread under the engaging column, and one side of the rotating groove is slidably connected with the displacement disk through a rotating ball, which can convert the sliding friction between the rotating groove and the displacement disk into rolling friction, thereby reducing wear. There are twelve rotating balls in total, and the central axis of the engaging column is used as the center axis. The linear symmetrical distribution, because the rotating groove is connected to the displacement disk through the rotating bead, the rotating groove will drive the displacement disk to move up and down synchronously when it moves up and down. At the same time, the displacement disk will drive the fixed block to move through the second rotating column when it moves, and cooperate with the limit of the first rotating column to realize the expansion and contraction of the four fixed blocks. The gripping thread set on one side of the fixed block can engage with screws of different specifications, so as to realize the adaptive fixation of the upper and lower ends of the screw for subsequent tensile testing. Through such a setting, the adaptive fixing mechanism can adaptively fix screws of different specifications, without spending a lot of time looking for corresponding pads and tension rings for fixing like traditional tensile machines. The operator can quickly fix the screws on the tensile machine, which reduces the preparation time and improves the efficiency of the entire testing process. Especially in the production environment where multiple specifications of screws need to be tested frequently, the advantages are more obvious. Since there is no need to use pads and tension rings of multiple specifications, the purchase and inventory costs of equipment accessories are reduced. When using this tensile machine, enterprises do not have to constantly purchase new fixing accessories as the screw specifications are updated or increased, saving expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the cooperation between the base and the protection box mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the adaptive fixing mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the upper fixing structure of the adaptive fixing mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the engagement groove, the engagement column and the fixing plate cooperating with each other in the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the rotating groove, rotating ball and displacement disk of the present invention;

[0024] Figure 8 It is a schematic diagram of the internal transverse structure of the front wheel locking mechanism of the present invention.

[0025] In the figure: 1. support bar; 2. base; 3. operating table; 4. fixing seat; 5. protection box mechanism; 501. connecting frame; 502. hinge; 503. opening and closing door; 504. handle; 505. movable adsorption magnetic strip; 506. cylinder; 507. data line; 6. adaptive fixing mechanism; 601. engaging groove; 602. engaging column; 603. fixing disk; 604. rotating groove; 605. rotating ball; 606. displacement disk; 607. first rotating column; 608. second rotating column; 609. fixing block. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8The present invention provides a technical solution: a tensile testing machine for screw production, comprising a support bar 1, a base 2 is fixedly connected to the upper surface of the support bar 1, an operating table 3 is fixedly connected to the upper surface of the base 2, a fixing seat 4 is fixedly connected to the upper surface of the operating table 3, a protection box mechanism 5 is arranged on the upper surface of the operating table 3, and an adaptive fixing mechanism 6 is arranged on one side surface of the protection box mechanism 5;

[0028] The adaptive fixing mechanism 6 includes a snap-fitting groove 601, a snap-fitting column 602, a fixed disk 603, a rotating groove 604, a rotating bead 605, a displacement disk 606, a first rotating column 607, a second rotating column 608 and a fixed block 609. The surface of one side of the protection box mechanism 5 is fixedly connected with the snap-fitting groove 601, the surface of one side of the snap-fitting groove 601 is snap-fitted with the snap-fitting column 602, the surface of one side of the snap-fitting column 602 is fixedly connected with the fixed disk 603, the lower surface of the snap-fitting column 602 is slidably connected with the rotating groove 604, and the surface of one side of the rotating groove 604 is slidably connected with the rotating bead 605. 05, one side surface of the rotating bead 605 is slidably connected with the displacement disk 606, one side surface of the fixed disk 603 is rotatably connected with the first rotating column 607, one side surface of the displacement disk 606 is rotatably connected with the second rotating column 608, and one side surface of the second rotating column 608 is rotatably connected with the fixing block 609. Through the arrangement of the engaging groove 601, the engaging column 602, the fixing disk 603, the rotating groove 604, the rotating bead 605, the displacement disk 606, the first rotating column 607, the second rotating column 608 and the fixing block 609, when in use, the adaptive fixing mechanism 601 is firstly set. The engaging column 602 in the engaging column is engaged with the engaging groove 601. The lower surface of the engaging column 602 has a thread, which is slidably connected with the rotating groove 604. The staff rotates the rotating groove 604 through the anti-slip pattern on the outer side of the rotating groove 604. Due to the thread below the engaging column 602, the rotating groove 604 can move up and down. One side of the rotating groove 604 is slidably connected with the displacement disk 606 through the rotating ball 605, which can convert the sliding friction between the rotating groove 604 and the displacement disk 606 into rolling friction to reduce wear. There are a total of twelve rotating balls 605, which are symmetrically distributed with respect to the central axis of the engaging column 602. Since the rotating groove 604 is connected with the displacement disk 606 through the rotating ball 605, the rotating groove 604 will drive the displacement disk 606 to move up and down synchronously when it moves up and down. At the same time, when the displacement disk 606 moves, it will drive the fixed block 609 to move through the second rotating column 608 and cooperate with the first rotating column 607. The limit of the four fixed blocks 609 is realized to expand and shrink. The gripping thread set on one side of the fixed block 609 can mesh with screws of different specifications, thereby realizing adaptive fixation of the upper and lower ends of the screw for subsequent tensile testing. Through such a setting, the adaptive fixing mechanism 6 can adaptively fix screws of different specifications, without spending a lot of time looking for corresponding pads and tension rings for fixing like traditional tensile machines. The operator can quickly fix the screws on the tensile machine, reducing the preparation time and improving the efficiency of the entire testing process. Especially in the production environment where multiple specifications of screws need to be tested frequently, the advantages are more obvious. Since there is no need to use pads and tension rings of multiple specifications, the purchase and inventory costs of equipment accessories are reduced, and enterprises save expenses when using this tensile machine.

[0029] Further, the support bar 1 is symmetrically arranged with two groups on the perpendicular midline of the base 2, and is symmetrically arranged on the lower surface of the base 2. The adaptive fixing mechanism 6 is arranged with one group on the upper surface of the fixing seat 4 and one group on the side surface of the protection box mechanism 5, respectively used to fix the upper and lower sides of the tension bolt to be tested. Through the arrangement of the support bar 1 and the adaptive fixing mechanism 6, when in use, the support bar 1 is symmetrically arranged below the base 2. This symmetrical structure can provide stable support. Just like the even distribution of the four legs of a table can make the table more stable, the tensile machine may be subjected to a large tensile force when performing a screw tensile test. The symmetrically arranged support bar 1 can better withstand these forces and prevent the equipment from tipping over or shaking due to uneven force. The layout of the adaptive fixing mechanism 6 conforms to the operating logic of the screw tensile test. During the test, the screw is fixed up and down, and the tensile machine can directly apply axial tension to it to simulate the force of the screw in actual use. Moreover, the fixing seat 4 can provide a stable installation foundation for the adaptive fixing mechanism 6 to ensure that the mechanism for fixing the screw is stable in position during the test, which is conducive to accurately transmitting the tensile force.

[0030] Furthermore, a thread is provided on the lower surface of the engaging column 602, and the rotating groove 604 can move up and down through the thread on the lower surface of the engaging column 602 when rotating. A plurality of anti-slip grooves are provided on the outer surface of the rotating groove 604, and the staff can easily rotate the rotating groove 604 through the anti-slip grooves. Through the arrangement of the engaging column 602 and the rotating groove 604, when in use, this thread transmission method has very high precision. By rotating the rotating groove 604, the position of the component that fixes the screw can be accurately adjusted to adapt to screws of different lengths and specifications. For example, for a long screw, the rotating groove 604 can be moved downward so that the fixing block can better grasp the two ends of the screw; for a short screw, the rotating groove 604 is moved upward to ensure the effectiveness of the fixation. The plurality of anti-slip grooves provided on the outer surface of the rotating groove 604 greatly improve the convenience of operation. When the staff rotates the rotating groove 604, the anti-slip grooves can increase the contact between the fingers and the rotating groove 604. This means that the staff can easily rotate the rotating slot 604 by hand without the help of additional tools. Especially when the test screws are frequently replaced, this convenient operation method can save a lot of time and improve work efficiency.

[0031] Furthermore, twelve rotating beads 605 are symmetrically arranged on the central axis of the engaging column 602. The rotating groove 604 changes the sliding friction between it and the displacement disk 606 into rolling friction through the setting of the rotating beads 605, thereby reducing wear and extending the service life. Through the setting of the rotating beads 605 and the engaging column 602, the reduction of wear during use is crucial to the long-term use of the equipment, because wear will cause changes in the size of components and affect the matching accuracy between components. For example, if a gap appears between the rotating groove 604 and the displacement disk 606 due to wear, the adaptive fixing mechanism 6 will deviate when fixing the screw, thereby affecting the accuracy of the tensile test. Reducing wear can keep the equipment in good working condition for a long time. Since the existence of the rotating beads 605 reduces the wear of components, the service life of the key components of the equipment, the rotating groove 604 and the displacement disk 606, is extended, which means that the frequency of equipment maintenance and replacement of components will be reduced. In large-scale screw production enterprises, the tensile machine needs to run continuously for a long time and frequently perform tensile tests on screws of different batches and specifications. If there is no rotating ball 605 design to reduce wear, the rotating groove 604 The displacement disk 606 may not work properly due to wear in a short period of time, resulting in frequent equipment shutdowns for maintenance. The application of the rotating bead 605 can keep the equipment in a stable working state and ensure the smoothness of the production process. This not only reduces production delays caused by equipment maintenance and improves production efficiency, but also reduces the workload of maintenance personnel. In the long run, the company does not need to stockpile a large number of spare parts, reduces inventory costs, and funds can be more reasonably allocated and utilized, bringing significant economic benefits to the company.

[0032] Furthermore, the first rotating columns 607 are symmetrically arranged on the outer surface of the fixed disk 603 with respect to the midline of the fixed disk 603, and four groups are arranged. The second rotating columns 608 are symmetrically arranged on the outer surface of the displacement disk 606 with respect to the midline of the displacement disk 606, and four groups are arranged. Through the arrangement of the first rotating columns 607 and the second rotating columns 608, when in use, the symmetrical arrangement of the first rotating columns 607 and the second rotating columns 608 makes the entire adaptive fixing mechanism 6 more balanced in structure. With the midline of the fixed disk 603 and the displacement disk 606 as the axis of symmetry, the distribution of the four groups of rotating columns is like a stable frame structure. When the fixing block 609 is subjected to forces in various directions during the process of fixing the screws, this symmetrical structure can better disperse and balance these forces to prevent local deformation or damage to the fixing mechanism. In addition, the symmetrical arrangement of the first rotating columns 607 and the second rotating columns 608 can also enhance the overall adaptive fixing mechanism 6. Stability and reliability. In actual use, whether in frequent operations or long-term working conditions, the stable structure can ensure that the fixing mechanism always maintains good working performance and reduce failures and errors caused by structural instability.

[0033] Furthermore, a rotating shaft is provided on one side surface of the second rotating column 608, and one end of the first rotating column 607 is rotatably connected to the rotating shaft. When the first rotating column 607 rotates around the fixed disk 603, the second rotating column 608 also rotates with the rotation of the first rotating column 607. Through the provision of the second rotating column 608, when in use, the rotating connection between the first rotating column 607 and the second rotating column 608 greatly enhances the adaptive adjustment ability of the adaptive fixing mechanism 6. Since the tensile machine needs to handle a variety of screws, their specifications and shapes may vary greatly. Through this linked rotation method, the fixed block 609 can flexibly change its position and angle according to the specific characteristics of the screw. For example, when fixing a screw with a larger head and a thinner stem, the first rotating column 607 and the second rotating column 608 can adjust the position of the fixed block 609 by rotating so that the fixed block 609 The device can adapt to the size of the head and the rod respectively, which improves the compatibility of the device with screws of different specifications and reduces the need to replace the fixing accessories due to changes in the shape and size of the screws. This rotation connection method also improves the accuracy and stability of the fixation. When fixing screws of complex shapes or special specifications, the coordinated rotation of the first rotating column 607 and the second rotating column 608 can make the fixing block 609 fit the screw surface more closely. For example, for screws with irregular patterns or non-standard pitches, the fixing block 609 can better grasp the screws through rotation adjustment to avoid slippage or uneven force during the tensile test.

[0034] Furthermore, a fixing block 609 is rotatably connected to the end of each second rotating column 608, and a gripping thread is provided on one side surface of the fixing block 609, and the gripping thread can mesh with the screw to be tested. Through the setting of the fixing block 609, when in use, each end of the second rotating column 608 is rotatably connected to a fixing block 609. This connection method enables the fixing block 609 to flexibly adjust the angle. When the head shape of the screw is irregular or the screw installation position has a certain inclination, the fixing block 609 can adapt to the shape and angle of the screw by its own rotation to ensure that the gripping thread can be in close contact with the screw. The gripping thread can mesh with screws of different specifications, which enables the adaptive fixing mechanism 6 to adapt to a variety of screw sizes, whether it is a micro screw with a smaller diameter or an industrial screw with a larger diameter. As long as its thread structure or shape can cooperate with the gripping thread, it can be fixed on the tensile testing machine for testing. And because the fixing block 609 can adapt to the screw by rotating the connection, the operator does not need to spend a lot of time to accurately adjust the position and direction of the screw when fixing the screw. The screws only need to be roughly placed between the fixing blocks 609, and the fixing blocks 609 can automatically adapt and firmly fix the screws, which can save a lot of operating time and improve the overall efficiency of the test when the screw tension test is frequently performed.

[0035] Furthermore, the protection box mechanism 5 includes a connecting frame 501, a hinge 502, an opening and closing door 503, a handle 504, a movable adsorption magnetic strip 505, a driven adsorption magnetic strip 506, a cylinder 507 and a data line 508. The upper surface of the operating table 3 is fixedly connected to the connecting frame 501, the one side surface of the connecting frame 501 is fixedly connected to the hinge 502, the one side surface of the hinge 502 is fixedly connected to the opening and closing door 503, and the one side surface of the opening and closing door 503 is fixedly connected to The handle 504 and one side surface of the opening and closing door 503 are fixedly connected with a movable adsorption magnetic strip 505, the upper surface of the connecting frame 501 is fixedly connected with a cylinder 506, and the upper surface of the connecting frame 501 is fixedly connected with a data line 507. By setting the connecting frame 501, the hinge 502, the opening and closing door 503, the handle 504, the movable adsorption magnetic strip 505, the driven adsorption magnetic strip 506, the cylinder 507 and the data line 508, when in use, the connecting frame 501 The main frame of the protection box mechanism 5 is fixed above the operating table 3. The hinge 502 connects the connecting frame 501 and the opening and closing door 503, so that the opening and closing door 503 can rotate around the axis of the hinge 502. When the operator holds the handle 504 and applies external force, the opening and closing door 503 will rotate through the hinge 502 to open or close. The moving adsorption magnetic strip 505 and the driven adsorption magnetic strip 506 are used to fix the door when it is closed. When the opening and closing door 503 is closed in place, the moving adsorption magnetic strip 505 and the driven adsorption magnetic strip 506 attract each other to generate sufficient adsorption force to keep the opening and closing door 503 in a closed state to prevent the door from accidentally opening during the tensile test. The existence of the protection box mechanism 5 can effectively prevent the operator from being injured by accidents such as screw breakage and parts splashing during the tensile test, thereby ensuring the personal safety of the operator.

[0036] Furthermore, two groups of hinges 502 are respectively provided on the inner surfaces of the front and rear sides of the connecting frame 501, which are arranged in an up-and-down manner. The opening and closing door 503 is fixedly connected with a group of hinges 502 on one side surface of each group of hinges. Through the arrangement of the hinges 502 and the opening and closing door 503, when in use, two groups of hinges 502 are respectively provided on the inner surfaces of the front and rear sides of the connecting frame 501. This up-and-down arrangement can provide multiple support points for the opening and closing door 503. This stable connection can prevent the opening and closing door 503 from detaching from the connecting frame 501 due to vibration, thereby ensuring the integrity of the protection box mechanism 5, thereby better protecting the safety of the operator. Multiple groups of hinges 502 can evenly distribute the force on the opening and closing door 503 on the connecting frame 501. When the opening and closing door 503 is opened or closed, the force is mainly concentrated on the hinges 502. The arrangement of two groups of hinges 502 in the upper and lower parts can avoid damage to the connecting frame 501 or the opening and closing door 503 due to excessive local force.

[0037] Furthermore, explosion-proof glass is fixedly connected to the surface of one side of the opening and closing door 503, and a group of movable adsorption magnetic strips 505 are respectively arranged on one side of the opening and closing door 503 and the connecting frame 501. When the opening and closing door 503 is closed, the two groups of movable adsorption magnetic strips 505 are firmly adsorbed to each other. Through the arrangement of the opening and closing door 503 and the movable adsorption magnetic strips 505, during use, the screws may break due to excessive tensile force, and the broken screws or other parts may splash out at high speed. The explosion-proof glass on the opening and closing door 503 can effectively block these flying fragments, just like a solid shield, protecting the operator from harm. When the opening and closing door 503 is closed, the two groups of movable adsorption magnetic strips 505 are firmly adsorbed to each other, which can ensure the sealing of the protection box mechanism 5. Good sealing can prevent small parts or fragments inside from flying out from gaps such as door gaps during the test process, further enhancing the safety protection of the operator. At the same time, it can also prevent external dust, debris, etc. from entering the protection box and interfering with the equipment and the test environment.

[0038] Working principle: This tensile testing machine for screw production is set up through an adaptive fixing mechanism. When testing the screws, the engaging column 602 in the adaptive fixing mechanism 6 is first engaged with the engaging groove 601. The lower surface of the engaging column 602 is threaded, which is slidably connected to the rotating groove 604. The staff rotates the rotating groove 604 through the anti-slip pattern on the outer side of the rotating groove 604. Due to the thread under the engaging column 602, the rotating groove 604 can move up and down. One side of the rotating groove 604 is slidably connected to the displacement disk 606 through a rotating ball 605, which can convert the sliding friction between the rotating groove 604 and the displacement disk 606 into rolling friction to reduce wear. There are twelve rotating balls 605 here, and they are symmetrically distributed with the central axis of the engaging column 602. Since the rotating groove 604 is connected to the displacement disk 606 through the rotating ball 605, the rotating groove 604 will drive the displacement disk 606 to move up and down synchronously when it moves up and down. When moving, the second rotating column 608 will drive the fixed block 609 to move, and cooperate with the limit of the first rotating column 607 to achieve the expansion and contraction of the four fixed blocks 609. The gripping thread set on one side of the fixed block 609 can engage with screws of different specifications, thereby realizing adaptive fixation of the upper and lower ends of the screw for subsequent tensile testing. Through such a setting, the adaptive fixing mechanism 6 can adaptively fix screws of different specifications, without spending a lot of time looking for corresponding pads and tension rings for fixing like traditional tensile machines. The operator can quickly fix the screws on the tensile machine, reducing the preparation time and improving the efficiency of the entire testing process. Especially in the production environment where multiple specifications of screws need to be tested frequently, the advantages are more obvious. Since there is no need to use pads and tension rings of multiple specifications, the purchase and inventory costs of equipment accessories are reduced. When using this tensile machine, enterprises do not have to constantly purchase new fixing accessories as the screw specifications are updated or increased, saving expenses. The model of the cylinder 506 is YS-NZ100-12A.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile testing machine for screw production, comprising a support bar (1), characterized in that: The upper surface of the support bar (1) is fixedly connected to a base (2), the upper surface of the base (2) is fixedly connected to an operating table (3), the upper surface of the operating table (3) is fixedly connected to a fixing seat (4), the upper surface of the operating table (3) is provided with a protection box mechanism (5), and a side surface of the protection box mechanism (5) is provided with an adaptive fixing mechanism (6); The adaptive fixing mechanism (6) comprises a snap-fitting groove (601), a snap-fitting column (602), a fixed disk (603), a rotating groove (604), a rotating bead (605), a displacement disk (606), a first rotating column (607), a second rotating column (608) and a fixed block (609); one side surface of the protection box mechanism (5) is fixedly connected to the snap-fitting groove (601); one side surface of the snap-fitting groove (601) is snap-fitted to the snap-fitting column (602); one side surface of the snap-fitting column (602) is fixedly connected to the fixed disk (603); 03), the lower surface of the locking column (602) is slidably connected to a rotating groove (604), the side surface of the rotating groove (604) is slidably connected to a rotating bead (605), the side surface of the rotating bead (605) is slidably connected to a displacement disk (606), the side surface of the fixed disk (603) is rotatably connected to a first rotating column (607), the side surface of the displacement disk (606) is rotatably connected to a second rotating column (608), and the side surface of the second rotating column (608) is rotatably connected to a fixed block (609).

2. A tensile testing machine for screw production according to claim 1, characterized in that: The support bars (1) are symmetrically arranged in two groups about the perpendicular midline of the base (2), and are symmetrically arranged on the lower surface of the base (2). The adaptive fixing mechanism (6) is arranged in one group on the upper surface of the fixing seat (4) and in one group on the side surface of the protection box mechanism (5), respectively used to fix the upper and lower sides of the tension bolt to be detected.

3. A tensile testing machine for screw production according to claim 1, characterized in that: The lower surface of the locking column (602) is provided with a thread, and the rotating groove (604) can move up and down through the thread on the lower surface of the locking column (602) when rotating. The outer surface of the rotating groove (604) is provided with multiple groups of anti-slip grooves, and the staff can easily rotate the rotating groove (604) through the anti-slip grooves.

4. A tensile testing machine for screw production according to claim 1, characterized in that: Twelve rotating beads (605) are symmetrically arranged about the central axis of the engaging column (602). Through the arrangement of the rotating beads (605), the sliding friction between the rotating groove (604) and the displacement disk (606) is changed into rolling friction, thereby reducing wear and extending the service life.

5. A tensile testing machine for screw production according to claim 1, characterized in that: The first rotating columns (607) are symmetrically arranged on the outer surface of the fixed disk (603) with respect to the perpendicular midline of the fixed disk (603), and four groups are provided. The second rotating columns (608) are symmetrically arranged on the outer surface of the displacement disk (606) with respect to the perpendicular midline of the displacement disk (606), and four groups are provided.

6. A tensile testing machine for screw production according to claim 1, characterized in that: A rotating shaft is provided on one side surface of the second rotating column (608), and one end of the first rotating column (607) is rotatably connected to the rotating shaft. When the first rotating column (607) rotates around the fixed disk (603), the second rotating column (608) also rotates along with the rotation of the first rotating column (607).

7. A tensile testing machine for screw production according to claim 1, characterized in that: The fixing block (609) is rotatably connected to the end of each second rotating column (608), and a gripping thread is provided on one side surface of the fixing block (609), and the gripping thread can be engaged with a screw to be detected.

8. A tensile testing machine for screw production according to claim 1, characterized in that: The protection box mechanism (5) comprises a connecting frame (501), a hinge (502), an opening and closing door (503), a handle (504), a movable adsorption magnetic strip (505), a driven adsorption magnetic strip (506), a cylinder (507) and a data line (508); the upper surface of the operating table (3) is fixedly connected to the connecting frame (501); the one side surface of the connecting frame (501) is fixedly connected to the hinge (502); the one side surface of the hinge (502) is fixedly connected to the opening and closing door (503); the one side surface of the opening and closing door (503) is fixedly connected to the handle (504); the one side surface of the opening and closing door (503) is fixedly connected to the movable adsorption magnetic strip (505); the upper surface of the connecting frame (501) is fixedly connected to the cylinder (506); and the upper surface of the connecting frame (501) is fixedly connected to the data line (507).

9. A tensile testing machine for screw production according to claim 8, characterized in that: The hinges (502) are provided with two groups on the inner surfaces of the front and rear sides of the connecting frame (501), arranged in an upper and lower manner, and the opening and closing doors (503) are fixedly connected with one group on the surface of one side of each set of hinges (502).

10. A tensile testing machine for screw production according to claim 8, characterized in that: An explosion-proof glass is fixedly connected to a surface of one side of the opening and closing door (503), and one group of movable adsorption magnetic strips (505) are respectively arranged on one side of the opening and closing door (503) and the connecting frame (501). When the opening and closing door (503) is closed, the two groups of movable adsorption magnetic strips (505) are firmly adsorbed to each other.

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